/* ============================================================
   CHUAN2.CN DEV ENGINE · 工业级高质感设计系统 2.0 (CYBER INDUSTRIAL PRO)
   曜石黑 · 工业赤红 · 极细网格 · 金属高光 · 深度微交互
   ============================================================ */

/* 鸿蒙黑体自托管 */
@font-face{
  font-family:"HarmonyOS Sans SC";
  src:url("../fonts/HarmonyOS_Sans_SC_Regular.subset.woff2") format("woff2");
  font-weight:400; font-style:normal; font-display:swap;
}
@font-face{
  font-family:"HarmonyOS Sans SC";
  src:url("../fonts/HarmonyOS_Sans_SC_Bold.subset.woff2") format("woff2");
  font-weight:700; font-style:normal; font-display:swap;
}

:root {
  /* 基础与背景 */
  --c-bg: #f8fafc;
  --c-bg-subtle: #f1f5f9;
  --c-card-bg: #ffffff;
  --c-card-dark: #121215;
  --c-card-hover: #ffffff;
  
  /* 文本色系 */
  --c-text-main: #09090b;       
  --c-text-body: #27272a;       
  --c-text-muted: #71717a;      
  --c-text-light: #a1a1aa;
  
  /* 工业赤红核心色系 */
  --c-red: #dc2626;
  --c-red-glow: #ef4444;
  --c-red-dark: #991b1b;
  --c-red-bg: rgba(220, 38, 38, 0.05);
  --c-red-border: rgba(220, 38, 38, 0.25);
  --c-red-pulse: rgba(220, 38, 38, 0.35);
  
  /* 曜石黑核心色系 */
  --c-black: #09090b;
  --c-black-soft: #18181b;
  --c-black-surface: #1f1f23;
  --c-black-border: #27272a;
  
  /* 边框色系 */
  --c-border: #e4e4e7;
  --c-border-strong: #d4d4d8;
  --c-border-dark: #27272a;
  
  /* 状态色 */
  --c-ok: #10b981;
  --c-ok-bg: rgba(16, 185, 129, 0.08);
  --c-ok-border: rgba(16, 185, 129, 0.3);
  --c-warn: #f59e0b;
  
  /* 字体家族 */
  --f-serif: 'Noto Serif SC', 'Source Han Serif SC', serif;
  --f-sans: 'HarmonyOS Sans SC', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --f-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, Menlo, 'HarmonyOS Sans SC', 'Noto Sans SC', monospace;
  
  /* 质感投影 */
  --shadow-subtle: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.05), 0 1px 3px rgba(0, 0, 0, 0.02);
  --shadow-hover: 0 16px 36px rgba(0, 0, 0, 0.08), 0 2px 8px rgba(220, 38, 38, 0.08);
  --shadow-glow: 0 0 24px rgba(220, 38, 38, 0.2);
  --shadow-dark: 0 12px 32px rgba(0, 0, 0, 0.3);

  /* 尺寸与圆角 */
  --radius: 6px;
  --radius-lg: 10px;
  --radius-sm: 4px;
  --maxw: 1260px;
}

/* 兼容原有变量别名 */
:root {
  --bg: var(--c-bg);
  --bg-soft: var(--c-bg-subtle);
  --bg-ter: #eef2f6;
  --ink: var(--c-black);
  --ink-2: var(--c-black-soft);
  --text: var(--c-text-body);
  --text-2: var(--c-text-muted);
  --text-3: var(--c-text-light);
  --border: var(--c-border);
  --border-2: var(--c-border-strong);
  --red: var(--c-red);
  --red-d: var(--c-red-dark);
  --red-bg: var(--c-red-bg);
  --red-bd: var(--c-red-border);
  --ok: var(--c-ok);
  --warn: var(--c-warn);
  --font: var(--f-sans);
  --mono: var(--f-mono);
  --shadow: var(--shadow-card);
  --shadow-lg: var(--shadow-hover);
}

/* 全局重置与排版 */
html { scroll-behavior: smooth; }
::selection { background: var(--c-red); color: #ffffff; }
*, *::before, *::after { box-sizing: border-box; }

body {
  margin: 0; background-color: var(--c-bg); color: var(--c-text-body);
  font-family: var(--f-sans); font-size: 15px; line-height: 1.6; overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; transition: color 0.18s ease, border-color 0.18s ease, background-color 0.18s ease; }
ul, ol { list-style: none; padding: 0; margin: 0; }
h1, h2, h3, h4 { line-height: 1.35; margin: 0 0 12px; color: var(--c-text-main); }
img { max-width: 100%; height: auto; }
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; position: relative; z-index: 1; }
.skip-link { position: absolute; left: -9999px; top: 0; background: var(--c-black); color: #fff; padding: 8px 16px; z-index: 2000; }
.skip-link:focus { left: 0; }

/* ============================================================
   工业级技术背景层 (GRID & AMBIENT & WATERMARK)
   ============================================================ */
.grid-layer {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%; z-index: -2;
  background-image: 
    linear-gradient(rgba(9, 9, 11, 0.034) 1px, transparent 1px),
    linear-gradient(90deg, rgba(9, 9, 11, 0.034) 1px, transparent 1px);
  background-size: 36px 36px;
  pointer-events: none;
}

.ambient-glow {
  position: fixed; top: -160px; left: 50%; transform: translateX(-50%);
  width: 1100px; height: 500px;
  background: radial-gradient(circle, rgba(220, 38, 38, 0.08) 0%, rgba(220, 38, 38, 0) 70%);
  z-index: -1; pointer-events: none;
  animation: ambientPulse 10s ease-in-out infinite;
}
@keyframes ambientPulse {
  0%, 100% { opacity: 0.75; transform: translateX(-50%) scale(1); }
  50% { opacity: 1; transform: translateX(-50%) scale(1.08); }
}

.bg-watermark {
  position: fixed; top: 48%; left: 50%; transform: translate(-50%, -50%) rotate(-25deg);
  font-family: var(--f-mono); font-weight: 900; font-size: 11vw; color: rgba(0, 0, 0, 0.015); 
  z-index: -1; pointer-events: none; user-select: none; white-space: nowrap;
}

/* ============================================================
   全站顶部官方正版授权天际条 (TOP AUTHORITY BAR)
   ============================================================ */
.top-auth-strip {
  width: 100%;
  background: #09090b;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  font-family: var(--f-mono);
  position: relative;
  z-index: 102;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
}
.top-auth-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 32px;
  padding: 4px 0;
  gap: 10px 16px;
  flex-wrap: wrap;
}
.top-auth-left {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  row-gap: 4px;
}
.top-auth-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11.5px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 3px;
  letter-spacing: 0.2px;
  transition: all 0.2s ease;
}
.top-auth-badge:hover {
  transform: translateY(-1px);
  filter: brightness(1.15);
}
.top-auth-badge.auth-badge--996 {
  color: #fca5a5;
  background: rgba(220, 38, 38, 0.16);
  border: 1px solid rgba(239, 68, 68, 0.45);
}
.top-auth-badge.auth-badge--360 {
  color: #6ee7b7;
  background: rgba(16, 185, 129, 0.16);
  border: 1px solid rgba(16, 185, 129, 0.45);
}
.top-auth-badge.auth-badge--douyin {
  color: #f9a8d4;
  background: rgba(219, 39, 119, 0.12);
  border: 1px solid rgba(219, 39, 119, 0.35);
}
.top-auth-badge.auth-badge--kuaishou {
  color: #fdba74;
  background: rgba(234, 88, 12, 0.12);
  border: 1px solid rgba(234, 88, 12, 0.35);
}
.top-auth-badge .auth-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  flex: none;
  display: inline-block;
}
.auth-dot--red {
  background: #ef4444;
  box-shadow: 0 0 6px #ef4444;
  animation: pulseDot 2s infinite ease-in-out;
}
.auth-dot--cyan {
  background: #10b981;
  box-shadow: 0 0 6px #10b981;
  animation: pulseDot 2s 1s infinite ease-in-out;
}
.auth-dot--pink {
  background: #ec4899;
  box-shadow: 0 0 6px #ec4899;
  animation: pulseDot 2s 0.5s infinite ease-in-out;
}
.auth-dot--orange {
  background: #f97316;
  box-shadow: 0 0 6px #f97316;
  animation: pulseDot 2s 1.5s infinite ease-in-out;
}
.top-auth-badge .auth-icon {
  flex: none;
}
.top-auth-sep {
  color: rgba(255, 255, 255, 0.25);
  font-weight: 900;
  font-size: 12px;
}
.top-auth-right {
  display: flex;
  align-items: center;
  gap: 14px;
}
.top-auth-telemetry {
  font-size: 10px;
  letter-spacing: 1.2px;
  color: #71717a;
  font-weight: 700;
}
.top-auth-link {
  font-size: 11px;
  font-weight: 700;
  color: #d4d4d8;
  text-decoration: none;
  transition: color 0.16s ease;
  display: inline-flex;
  align-items: center;
  gap: 3px;
}
.top-auth-link:hover {
  color: #ffffff;
}

/* 首屏顶部双授权标牌徽标组 */
.hero-auth-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.hero-auth-badges {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #f8fafc;
  border: 1px solid var(--c-border-strong);
  padding: 4px 12px;
  border-radius: 4px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}
.hero-auth-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.2px;
}
.hero-auth-badge.auth-badge--996 {
  color: var(--c-red);
}
.hero-auth-badge.auth-badge--360 {
  color: #0891b2;
}
.hero-auth-badge b {
  font-weight: 900;
}
.hero-auth-badge .auth-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex: none;
  display: inline-block;
}
.hero-auth-mid {
  color: rgba(0, 0, 0, 0.2);
  font-weight: 900;
  font-size: 13px;
}
.hero .hero-auth-row .eyebrow {
  margin-bottom: 0;
}

/* 兼容原有 .home-notice */
.home-notice { display: none; }

/* ============================================================
   顶部导航栏 (SITE HEADER & NAVBAR)
   ============================================================ */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(9, 9, 11, 0.96); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 2px solid var(--c-red);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
}
.nav-row { display: flex; align-items: center; gap: 20px; height: 62px; }

.brand {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--f-mono); font-weight: 900; font-size: 1.25rem; color: #ffffff; letter-spacing: 1.5px;
  white-space: nowrap;
  text-decoration: none;
}
.brand-logo {
  height: 34px;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 0 6px rgba(234, 179, 8, 0.4));
  animation: logoGlow 4s infinite ease-in-out;
  transition: transform 0.25s ease, filter 0.25s ease;
  flex: none;
  display: block;
}
.brand:hover .brand-logo {
  animation: none;
  transform: scale(1.08);
  filter: drop-shadow(0 0 12px rgba(234, 179, 8, 0.85)) drop-shadow(0 0 3px rgba(255, 220, 100, 0.6));
}
@keyframes logoGlow {
  0%, 100% {
    filter: drop-shadow(0 0 4px rgba(234, 179, 8, 0.3));
  }
  50% {
    filter: drop-shadow(0 0 10px rgba(234, 179, 8, 0.65)) drop-shadow(0 0 2px rgba(255, 215, 0, 0.45));
  }
}
.brand-text {
  display: inline-flex;
  align-items: center;
  color: #ffffff;
}
.brand .brand-badge {
  font-size: 11px; background: var(--c-red); color: #fff; padding: 2px 6px; border-radius: 2px;
  letter-spacing: 1px; font-weight: 800; margin-left: 6px;
}
.brand span { color: var(--c-red); }
.brand .pulse-dot {
  width: 7px; height: 7px; background: var(--c-ok); border-radius: 50%; display: inline-block;
  box-shadow: 0 0 8px var(--c-ok); animation: pulseDot 2s infinite ease-in-out;
}
@keyframes pulseDot { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.4; transform: scale(0.85); } }

.main-nav {
  display: flex; gap: 2px; margin-left: 10px; flex: 1; align-items: center;
  overflow-x: auto; overflow-y: hidden;
  scrollbar-width: none; -ms-overflow-style: none;
}
.main-nav::-webkit-scrollbar { display: none; width: 0; height: 0; }
.nav-link {
  color: #d4d4d8; font-size: 13.5px; font-weight: 600; padding: 7px 12px; white-space: nowrap;
  border-radius: 3px; position: relative;
  transition: color 0.2s cubic-bezier(0.16, 1, 0.3, 1), background-color 0.2s cubic-bezier(0.16, 1, 0.3, 1), transform 0.15s ease;
}
.nav-link::before {
  content: ''; position: absolute; bottom: 0; left: 12px; right: 12px; height: 2px;
  background: var(--c-red); transform: scaleX(0); transform-origin: center;
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 0 8px var(--c-red-glow);
}
.nav-link:hover { color: #ffffff; background: rgba(255, 255, 255, 0.07); transform: translateY(-1px); }
.nav-link:hover::before { transform: scaleX(0.85); }
.nav-link:active { transform: scale(0.97); }
.nav-link.active {
  color: #ffffff;
  background: rgba(220, 38, 38, 0.16); font-weight: 700;
}
.nav-link.active::before {
  transform: scaleX(1); left: 0; right: 0;
}
.nav-link.active::after {
  content: ''; position: absolute; bottom: -2px; left: 0; width: 100%; height: 2px;
  background: var(--c-red); box-shadow: 0 0 10px var(--c-red-glow);
}

.nav-account { display: flex; gap: 10px; margin-left: auto; align-items: center; }
.nav-burger { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-burger span { display: block; width: 22px; height: 2px; background: #fff; margin: 5px 0; transition: .2s; }

/* ============================================================
   HUD 区域标题 (ZONE HEADERS)
   ============================================================ */
.zone-header {
  display: flex; align-items: center; justify-content: space-between; margin: 56px 0 24px;
  padding-bottom: 12px; border-bottom: 2px solid var(--c-black);
}
.zh-title-box { display: flex; align-items: center; gap: 12px; }
.zh-title-box::before {
  content: ''; width: 8px; height: 26px; background: var(--c-red); transform: skewX(-12deg); display: inline-block;
  box-shadow: 0 0 12px rgba(220, 38, 38, 0.4);
}
.zh-cn { font-family: var(--f-serif); font-size: 1.85rem; font-weight: 900; color: var(--c-text-main); letter-spacing: -0.5px; }
.zh-en {
  font-family: var(--f-mono); font-size: 0.78rem; color: #ffffff; background: var(--c-black);
  padding: 3px 10px; border-radius: 3px; font-weight: 800; letter-spacing: 1.5px;
}
.zh-deco-num { font-family: var(--f-mono); font-size: 1.6rem; color: var(--c-red); font-weight: 900; }

/* 兼容原有 .sec-head */
.sec-head {
  display: flex; align-items: center; justify-content: space-between; margin: 50px 0 20px;
  padding-bottom: 12px; border-bottom: 2px solid var(--c-black);
}
.sec-head-left { display: flex; align-items: center; gap: 12px; }
.sec-head-left::before {
  content: ''; width: 8px; height: 24px; background: var(--c-red); transform: skewX(-12deg); display: inline-block;
}
.sec-head h2 { font-family: var(--f-serif); font-size: 1.85rem; font-weight: 900; color: var(--c-text-main); margin: 0; }
.sec-en {
  font-family: var(--f-mono); font-size: 0.78rem; color: #ffffff; background: var(--c-black);
  padding: 3px 10px; border-radius: 3px; font-weight: 800; letter-spacing: 1.5px;
}
.sec-sub { color: var(--c-text-muted); margin: -10px 0 24px; font-size: 14.5px; line-height: 1.7; }

/* ============================================================
   通用按钮 (BUTTONS) · 工业触感与微交互升级
   ============================================================ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 42px; padding: 0 20px;
  border-radius: var(--radius-sm); font-size: 14px; font-weight: 700; border: 1px solid transparent;
  cursor: pointer; transition: all 0.22s cubic-bezier(0.16, 1, 0.3, 1); line-height: 1; white-space: nowrap;
  position: relative; overflow: hidden;
}
.btn:active {
  transform: scale(0.975) translateY(1px);
}
/* 按钮悬停流光划过（Sheen 效果） */
.btn::after {
  content: ''; position: absolute; top: -50%; bottom: -50%; left: -60%; width: 40%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.26), transparent);
  transform: skewX(-20deg); pointer-events: none; opacity: 0;
}
.btn:hover::after {
  opacity: 1;
  left: 140%;
  transition: left 0.55s ease, opacity 0.2s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--c-red), var(--c-red-dark));
  color: #ffffff; border-color: var(--c-red);
  box-shadow: 0 4px 14px rgba(220, 38, 38, 0.35);
}
.btn-primary:hover {
  background: linear-gradient(135deg, #ef4444, var(--c-red));
  border-color: #ef4444; color: #ffffff;
  box-shadow: 0 8px 26px rgba(220, 38, 38, 0.55);
  transform: translateY(-3px) scale(1.02);
}
.btn-dark {
  background: linear-gradient(135deg, #18181b, #09090b); color: #ffffff; border-color: #27272a;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.35);
}
.btn-dark:hover {
  background: linear-gradient(135deg, var(--c-red), var(--c-red-dark));
  border-color: var(--c-red); color: #ffffff;
  box-shadow: 0 8px 24px rgba(220, 38, 38, 0.45);
  transform: translateY(-3px) scale(1.02);
}
.btn-secondary {
  background: #ffffff; color: var(--c-text-main); border-color: var(--c-border-strong);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
}
.btn-secondary:hover {
  border-color: var(--c-red); color: var(--c-red); background: #ffffff;
  box-shadow: 0 6px 20px rgba(220, 38, 38, 0.14);
  transform: translateY(-3px) scale(1.02);
}
.btn-ghost {
  background: transparent; color: #e4e4e7; border-color: #3f3f46;
}
.btn-ghost:hover {
  color: #ffffff; border-color: var(--c-red); background: rgba(220, 38, 38, 0.15); transform: translateY(-2px);
}
.btn-danger { background: var(--c-red); color: #fff; border-color: var(--c-red); }
.btn-sm { height: 32px; padding: 0 12px; font-size: 12.5px; border-radius: 3px; font-weight: 600; }
.btn-lg { height: 48px; padding: 0 28px; font-size: 15px; font-weight: 800; letter-spacing: 0.5px; }
.btn-block { width: 100%; }

/* ============================================================
   通用卡片与标签 (CARDS & TAGS) · 灵动上浮与立体发光
   ============================================================ */
.card {
  background: var(--c-card-bg); border: 1px solid var(--c-border); border-radius: var(--radius);
  padding: 22px; box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04); position: relative;
  transition: all 0.28s cubic-bezier(0.16, 1, 0.3, 1);
}
.card:hover {
  border-color: var(--c-red);
  box-shadow: 0 16px 36px -4px rgba(0, 0, 0, 0.1), 0 4px 16px rgba(220, 38, 38, 0.15);
  transform: translateY(-5px);
}
.card-link { cursor: pointer; display: flex; flex-direction: column; }
.card-link:hover { transform: translateY(-5px); }

.tag {
  display: inline-flex; align-items: center; gap: 4px; font-size: 11.5px; font-weight: 800;
  padding: 2px 8px; border-radius: 3px; font-family: var(--f-mono); letter-spacing: 0.5px;
}
.tag-red { background: var(--c-red-bg); color: var(--c-red); border: 1px solid var(--c-red-border); }
.tag-gray { background: #f1f5f9; color: var(--c-text-body); border: 1px solid var(--c-border); }
.tag-black { background: var(--c-black); color: #ffffff; border: 1px solid var(--c-black); }
.tag-green { background: var(--c-ok-bg); color: var(--c-ok); border: 1px solid var(--c-ok-border); }
.tag-blue { background: #eff6ff; color: #1d4ed8; border: 1px solid #bfdbfe; }
.tag-violet { background: #f5f3ff; color: #7c3aed; border: 1px solid #ddd6fe; }
.tag-gold { background: #fffbeb; color: #b45309; border: 1px solid #fde68a; }

.muted { color: var(--c-text-muted); font-size: 13.5px; }
.mono { font-family: var(--f-mono); }
.lead { font-size: 16px; color: var(--c-text-body); line-height: 1.8; }
hr.sep { border: none; border-top: 1px solid var(--c-border); margin: 32px 0; }

.grid { display: grid; gap: 20px; }
.g2 { grid-template-columns: repeat(2, 1fr); }
.g3 { grid-template-columns: repeat(3, 1fr); }
.g4 { grid-template-columns: repeat(4, 1fr); }
.g5 { grid-template-columns: repeat(5, 1fr); }
.flex { display: flex; align-items: center; gap: 12px; }
.between { justify-content: space-between; }
.wrap { flex-wrap: wrap; }
.mt8 { margin-top: 8px; } .mt16 { margin-top: 16px; } .mt24 { margin-top: 24px; } .mt40 { margin-top: 40px; }
.mb8 { margin-bottom: 8px; } .mb16 { margin-bottom: 16px; } .mb24 { margin-bottom: 24px; }
.center { text-align: center; }

/* ============================================================
   HERO 核心区域 (FLAGSHIP CYBER HERO)
   ============================================================ */
.hero {
  background: #ffffff; border-bottom: 2px solid var(--c-black);
  padding: 68px 0 54px; position: relative; overflow: hidden;
}
.hero::before {
  content: "CHUAN2 996 ENGINE PRO"; position: absolute; right: -30px; top: 46%; transform: translateY(-50%);
  font-family: var(--f-mono); font-weight: 900; font-size: 6.5rem; color: rgba(0, 0, 0, 0.024);
  pointer-events: none; white-space: nowrap; user-select: none;
}
.hero-grid {
  display: grid; grid-template-columns: 1.25fr 0.95fr; gap: 48px; align-items: center;
  position: relative; z-index: 1;
}

.hero .eyebrow {
  display: inline-flex; align-items: center; gap: 10px; font-family: var(--f-mono); font-size: 12.5px;
  letter-spacing: 2px; color: #ffffff; background: var(--c-black); padding: 5px 14px;
  border-radius: 3px; font-weight: 800; border-left: 4px solid var(--c-red); margin-bottom: 20px;
}
.hero h1 {
  font-family: var(--f-serif); font-size: 2.85rem; font-weight: 900; color: var(--c-text-main);
  line-height: 1.22; letter-spacing: -0.5px; margin: 0 0 16px;
}
.hero .slogan-highlight {
  color: var(--c-red); font-family: var(--f-sans); font-weight: 900; display: inline-block;
  position: relative;
  background: linear-gradient(120deg, #dc2626 0%, #ef4444 50%, #b91c1c 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.hero .slogan-highlight::after {
  content: ''; position: absolute; bottom: 1px; left: 0; width: 100%; height: 3px;
  background: linear-gradient(90deg, var(--c-red), rgba(239, 68, 68, 0.4));
  border-radius: 2px;
  box-shadow: 0 0 8px rgba(239, 68, 68, 0.5);
}
.hero .hero-sub {
  font-size: 15.5px; color: var(--c-text-body); line-height: 1.75; margin: 0 0 28px; max-width: 620px;
}

.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 34px; }
.hero-facts {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
  border-top: 1px dashed var(--c-border-strong); padding-top: 24px;
}
.hf {
  display: flex; flex-direction: column; gap: 2px;
  transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  padding: 4px 6px; border-radius: 4px;
}
.hf:hover {
  transform: translateY(-2px);
  background: rgba(0, 0, 0, 0.02);
}
.hf b {
  font-family: var(--f-mono); font-size: 26px; font-weight: 900; color: var(--c-text-main);
  letter-spacing: -0.5px;
  transition: color 0.2s ease;
}
.hf:hover b { color: var(--c-red); }
.hf span { font-size: 12px; color: var(--c-text-muted); font-weight: 600; }

/* ============================================================
   首屏右侧：公司前台实景展示窗 (HERO RECEPTION SHOWCASE)
   ============================================================ */
.hero-reception-aside {
  width: 100%;
}
.reception-card {
  background: #ffffff;
  border: 1px solid var(--c-border-strong);
  border-top: 4px solid var(--c-red);
  border-radius: var(--radius);
  box-shadow: 0 12px 32px -4px rgba(0, 0, 0, 0.08), 0 4px 12px rgba(0, 0, 0, 0.03);
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.reception-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 40px -6px rgba(0, 0, 0, 0.12), 0 6px 16px rgba(0, 0, 0, 0.05);
}
.reception-card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 18px;
  background: #09090b;
  color: #ffffff;
}
.reception-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--f-mono);
  font-size: 11.5px;
  font-weight: 700;
  color: #f4f4f5;
  letter-spacing: 0.5px;
}
.reception-status .pulse-dot {
  width: 7px; height: 7px; background: var(--c-ok, #10b981); border-radius: 50%; display: inline-block;
  box-shadow: 0 0 8px var(--c-ok, #10b981); animation: pulseDot 2s infinite ease-in-out;
}
.reception-tag {
  font-family: var(--f-mono);
  font-size: 10.5px;
  font-weight: 800;
  color: #fca5a5;
  background: rgba(220, 38, 38, 0.2);
  border: 1px solid rgba(220, 38, 38, 0.4);
  padding: 2px 7px;
  border-radius: 2px;
}
.reception-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: #18181b;
}
.reception-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.reception-card:hover .reception-photo {
  transform: scale(1.03);
}
.reception-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0) 45%, rgba(0, 0, 0, 0.85) 100%);
  display: flex;
  align-items: flex-end;
  padding: 14px 18px;
  pointer-events: none;
}
.reception-caption {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.reception-pill {
  align-self: flex-start;
  font-size: 11px;
  font-weight: 800;
  color: #ffffff;
  background: var(--c-red);
  padding: 2px 8px;
  border-radius: 2px;
  letter-spacing: 0.5px;
}
.reception-loc {
  font-size: 12.5px;
  color: #e4e4e7;
  margin: 0;
  line-height: 1.4;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.8);
}
.reception-card-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 18px;
  background: #fafafa;
  border-top: 1px solid var(--c-border);
  gap: 12px;
  flex-wrap: wrap;
}
.reception-perks {
  display: flex;
  gap: 8px;
}
.reception-perks span {
  font-size: 11.5px;
  color: var(--c-text-muted);
  background: #ffffff;
  border: 1px solid var(--c-border);
  padding: 2px 8px;
  border-radius: 2px;
  font-weight: 600;
}
.reception-link {
  font-size: 12.5px !important;
  height: 32px !important;
  padding: 0 12px !important;
  font-weight: 800 !important;
}

/* ============================================================
   微信视频号官方现场实录卡片 (WECHAT CHANNELS HIGHLIGHT)
   ============================================================ */
.sph-highlight-card {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 28px;
  background: #ffffff;
  border: 1px solid var(--c-border-strong);
  border-left: 5px solid #07c160;
  border-radius: var(--radius);
  padding: 26px 28px;
  box-shadow: var(--shadow-card);
  align-items: center;
  position: relative;
  overflow: hidden;
  margin-bottom: 0;
}
.sph-card-badge-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
.sph-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--f-mono);
  font-size: 12px;
  font-weight: 800;
  color: #07c160;
  background: rgba(7, 193, 96, 0.08);
  border: 1px solid rgba(7, 193, 96, 0.25);
  padding: 3px 9px;
  border-radius: 3px;
}
.sph-time-tag, .sph-loc-tag {
  font-size: 11.5px;
  color: var(--c-text-muted);
  background: #f1f5f9;
  padding: 2px 8px;
  border-radius: 2px;
  font-family: var(--f-mono);
}
.sph-card-title {
  font-size: 1.25rem;
  font-weight: 900;
  color: var(--c-text-main);
  line-height: 1.4;
  margin: 0 0 10px;
}
.sph-card-desc {
  font-size: 13.5px;
  color: var(--c-text-body);
  line-height: 1.65;
  margin: 0 0 14px;
}
.sph-card-meta {
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 20px;
  font-size: 12px;
}
.sph-author-name {
  color: var(--c-text-main);
}
.sph-topics {
  color: #0891b2;
  font-family: var(--f-mono);
  font-weight: 600;
}
.sph-card-btns {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.btn-sph-main {
  background: #07c160 !important;
  border-color: #07c160 !important;
  color: #ffffff !important;
  box-shadow: 0 4px 14px rgba(7, 193, 96, 0.25);
}
.btn-sph-main:hover {
  background: #06ad56 !important;
  border-color: #06ad56 !important;
  transform: translateY(-1px);
}
.sph-card-visual {
  display: block;
  text-decoration: none;
  color: inherit;
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-sm);
  overflow: hidden;
  cursor: pointer;
  background: #000;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}
.sph-cover-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.35s ease, filter 0.35s ease;
}
.sph-card-visual:hover .sph-cover-img {
  transform: scale(1.05);
  filter: brightness(0.88);
}
.sph-play-layer {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: rgba(0, 0, 0, 0.25);
  transition: background 0.2s ease;
}
.sph-card-visual:hover .sph-play-layer {
  background: rgba(0, 0, 0, 0.4);
}
.sph-play-circle {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(7, 193, 96, 0.95);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 20px rgba(7, 193, 96, 0.5);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.25s ease;
  position: relative;
}
.sph-play-circle::before {
  content: ''; position: absolute; inset: -4px; border-radius: 50%;
  border: 1.5px solid rgba(7, 193, 96, 0.7);
  animation: sphRipple 2.2s infinite cubic-bezier(0.1, 0.8, 0.2, 1);
  pointer-events: none;
}
@keyframes sphRipple {
  0% { transform: scale(1); opacity: 0.9; }
  100% { transform: scale(1.55); opacity: 0; }
}
.sph-card-visual:hover .sph-play-circle {
  transform: scale(1.14);
  box-shadow: 0 0 28px rgba(7, 193, 96, 0.8);
}
.sph-play-text {
  font-size: 12px;
  font-weight: 800;
  color: #ffffff;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.8);
  letter-spacing: 0.5px;
}
.sph-origin-tag {
  position: absolute;
  right: 8px;
  bottom: 8px;
  font-size: 10.5px;
  font-weight: 700;
  color: #ffffff;
  background: rgba(0, 0, 0, 0.65);
  padding: 2px 6px;
  border-radius: 2px;
}

/* 微信视频号扫码/播放弹窗 */
.sph-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.sph-modal-dialog {
  background: #ffffff;
  border-radius: 12px;
  max-width: 460px;
  width: 100%;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.35);
  overflow: hidden;
  position: relative;
}
.sph-modal-close {
  position: absolute;
  top: 14px;
  right: 16px;
  font-size: 26px;
  line-height: 1;
  background: none;
  border: none;
  color: #71717a;
  cursor: pointer;
  transition: color 0.15s ease;
}
.sph-modal-close:hover {
  color: #000000;
}
.sph-modal-head {
  padding: 22px 24px 14px;
  border-bottom: 1px solid var(--c-border);
}
.sph-badge-green {
  font-size: 11px;
  font-weight: 800;
  color: #07c160;
  background: rgba(7, 193, 96, 0.1);
  border: 1px solid rgba(7, 193, 96, 0.2);
  padding: 2px 8px;
  border-radius: 3px;
  display: inline-block;
  margin-bottom: 8px;
}
.sph-modal-head h4 {
  font-size: 18px;
  font-weight: 900;
  color: var(--c-text-main);
  margin: 0;
}
.sph-modal-body {
  padding: 20px 24px 24px;
}
.sph-modal-title {
  font-size: 13.5px;
  color: var(--c-text-body);
  line-height: 1.6;
  margin: 0 0 18px;
}
.sph-modal-qrbox {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 16px;
  background: #f8fafc;
  border: 1px solid var(--c-border);
  border-radius: 8px;
  margin-bottom: 20px;
}
.sph-qr-img {
  width: 170px;
  height: 170px;
  display: block;
  border-radius: 4px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}
.sph-qr-tip {
  font-size: 12px;
  color: var(--c-text-muted);
  margin-top: 10px;
  font-weight: 600;
}
.sph-modal-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* ============================================================
   四大核心交付与兜底承诺面板 (OFFICIAL ASSURANCE PANEL)
   ============================================================ */
.assure-section {
  padding: 24px 0 10px;
  background: transparent;
}
.assure-panel {
  background: #ffffff;
  border: 1px solid var(--c-border);
  border-top: 3px solid var(--c-red);
  border-radius: var(--radius);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04), 0 1px 3px rgba(0, 0, 0, 0.02);
  overflow: hidden;
}
.assure-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 14px 24px;
  background: #f8fafc;
  border-bottom: 1px solid var(--c-border);
  flex-wrap: wrap;
}
.assure-head-left {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}
.assure-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--f-mono);
  font-size: 11px;
  font-weight: 800;
  color: var(--c-red);
  letter-spacing: 1px;
  background: rgba(220, 38, 38, 0.07);
  border: 1px solid rgba(220, 38, 38, 0.2);
  padding: 3px 9px;
  border-radius: 3px;
}
.assure-eyebrow .pulse-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-red);
  display: inline-block;
  box-shadow: 0 0 6px rgba(220, 38, 38, 0.6);
  animation: pulse 1.8s infinite;
}
.assure-title {
  font-size: 15px;
  font-weight: 900;
  color: var(--c-text-main);
  margin: 0;
  letter-spacing: -0.2px;
}
.assure-head-right {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.assure-trust-badge {
  font-size: 12px;
  color: var(--c-text-body);
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.assure-trust-badge b {
  color: var(--c-red);
  font-family: var(--f-mono);
  font-weight: 800;
}
.assure-head-link {
  font-size: 12px;
  font-weight: 700;
  color: var(--c-text-main);
  text-decoration: none;
  transition: color 0.16s ease;
}
.assure-head-link:hover {
  color: var(--c-red);
}

.assure-grid,
.assure-split-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: #ffffff;
}
.assure-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
}
.assure-group--left {
  border-right: 1px solid var(--c-border-strong);
}
.assure-group .assure-card:nth-child(odd) {
  border-right: 1px solid var(--c-border);
}
.assure-group .assure-card:nth-child(-n+2) {
  border-bottom: 1px solid var(--c-border);
}

.assure-card {
  padding: 22px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: #ffffff;
  transition: background-color 0.2s ease, box-shadow 0.2s ease;
  position: relative;
}

/* 双色工业硬核体系（左侧4项统一工业赤红，右侧4项统一科技深蓝，绝不杂乱） */
.assure-card--red {
  --c-theme: #dc2626;
  --c-theme-bg: rgba(220, 38, 38, 0.07);
  --c-theme-border: rgba(220, 38, 38, 0.22);
  --c-theme-light: #ffffff;
}
.assure-card--blue {
  --c-theme: #2563eb;
  --c-theme-bg: rgba(37, 99, 235, 0.07);
  --c-theme-border: rgba(37, 99, 235, 0.22);
  --c-theme-light: #ffffff;
}

/* 兼容保留备用色变量映射 */
.assure-card--amber, .assure-card--bronze { --c-theme: #dc2626; --c-theme-bg: rgba(220, 38, 38, 0.07); --c-theme-border: rgba(220, 38, 38, 0.22); --c-theme-light: #ffffff; }
.assure-card--emerald, .assure-card--cyan, .assure-card--purple, .assure-card--rose { --c-theme: #2563eb; --c-theme-bg: rgba(37, 99, 235, 0.07); --c-theme-border: rgba(37, 99, 235, 0.22); --c-theme-light: #ffffff; }

.assure-card:hover {
  background: #fbfbfd;
}
.assure-card.highlight {
  background: #ffffff;
}
.assure-card.highlight:hover {
  background: #fbfbfd;
}
.assure-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.assure-card .assure-num {
  font-family: var(--f-mono);
  font-size: 13.5px;
  font-weight: 900;
  color: var(--c-theme, rgba(0, 0, 0, 0.22));
  opacity: 0.8;
  letter-spacing: -0.5px;
}
.assure-card .assure-tag {
  font-family: var(--f-mono);
  font-size: 10.5px;
  font-weight: 700;
  color: var(--c-theme, var(--c-text-muted));
  background: var(--c-theme-bg, #f1f5f9);
  border: 1px solid var(--c-theme-border, transparent);
  padding: 2px 7px;
  border-radius: 2px;
}
.assure-name {
  font-size: 15px;
  font-weight: 900;
  color: var(--c-text-main);
  margin: 0;
  display: flex;
  align-items: center;
  gap: 8px;
  line-height: 1.35;
}
.assure-card .assure-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 6px;
  background: var(--c-theme-bg, #f4f4f5);
  color: var(--c-theme, var(--c-text-main));
  flex: none;
  transition: transform 0.2s ease, background 0.2s ease;
}
.assure-card:hover .assure-icon {
  transform: scale(1.1);
}
.assure-card.highlight .assure-icon {
  background: var(--c-theme);
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.16);
}
.assure-desc {
  font-size: 12.8px;
  color: var(--c-text-body);
  line-height: 1.65;
  margin: 0;
  flex: 1;
}
.assure-foot {
  display: flex;
  gap: 6px;
  margin-top: 4px;
  flex-wrap: wrap;
}
.assure-foot span {
  font-size: 11px;
  color: var(--c-text-muted);
  background: #f8fafc;
  border: 1px solid var(--c-border);
  padding: 2px 6px;
  border-radius: 2px;
}
.assure-card .assure-foot span:first-child {
  color: var(--c-theme, var(--c-text-muted));
  border-color: var(--c-theme-border, var(--c-border));
  background: var(--c-theme-bg, #f8fafc);
  font-weight: 600;
}

/* 兼容保留老 .assure-band */
.assure-band {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 0;
  background: #ffffff; border: 2px solid var(--c-black); border-radius: var(--radius);
  box-shadow: var(--shadow-card); overflow: hidden; margin: 24px 0 35px;
}
.assure-item {
  padding: 22px 20px; border-right: 1px solid var(--c-border); display: flex; flex-direction: column; gap: 6px;
  transition: background-color 0.18s ease;
}
.assure-item:hover { background: #fafafa; }
.assure-item:last-child { border-right: none; }
.assure-item b {
  font-size: 15px; font-weight: 900; color: var(--c-text-main); display: flex; align-items: center; gap: 8px;
}
.assure-item b .dot-mark {
  width: 8px; height: 8px; background: var(--c-red); border-radius: 50%; display: inline-block;
  box-shadow: 0 0 8px rgba(220, 38, 38, 0.4); flex: none;
}
.assure-item span { font-size: 12.8px; color: var(--c-text-body); line-height: 1.6; }

/* ============================================================
   痛点与底气宣言 (MANIFESTO)
   ============================================================ */
.team-manifesto-v2 {
  background: #ffffff; border: 1px solid var(--c-border); border-left: 6px solid var(--c-black);
  border-radius: var(--radius); padding: 22px 28px; margin: 30px 0 35px; display: flex; gap: 24px;
  align-items: center; box-shadow: var(--shadow-subtle);
}
.tm-text { margin: 0; color: var(--c-text-body); font-size: 14.5px; line-height: 1.8; flex: 1; }
.tm-lead { font-size: 15.5px; font-weight: 800; color: var(--c-text-main); margin-bottom: 6px; display: block; }
.tm-highlight { color: var(--c-red); font-weight: 900; }
.tm-tags { display: flex; flex-wrap: wrap; gap: 8px; }

/* ============================================================
   MIRS 商业框架通栏 (MIRS MEGA-BANNER)
   ============================================================ */
.mirs-banner-strip {
  margin: 30px 0 38px;
  background: linear-gradient(135deg, #09090b 0%, #18181b 100%);
  border: 2px solid var(--c-black); border-left: 8px solid var(--c-red);
  border-radius: var(--radius); padding: 26px 32px;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.16); position: relative; overflow: hidden;
  transition: border-color 0.22s ease, box-shadow 0.22s ease;
}
.mirs-banner-strip::after {
  content: 'MIRS FRAMEWORK'; position: absolute; right: 280px; top: 50%; transform: translateY(-50%);
  font-family: var(--f-mono); font-size: 4.5rem; font-weight: 900;
  color: rgba(255, 255, 255, 0.03); pointer-events: none; white-space: nowrap;
}
.mirs-banner-strip:hover {
  border-color: var(--c-red); box-shadow: 0 12px 36px rgba(220, 38, 38, 0.2);
}
.mirs-left { display: flex; flex-direction: column; gap: 8px; z-index: 2; }
.mirs-badge-row { display: flex; align-items: center; gap: 10px; }
.mirs-tag-badge {
  background: var(--c-red); color: #ffffff; font-size: 11px; font-weight: 900;
  font-family: var(--f-mono); padding: 2px 8px; border-radius: 2px; text-transform: uppercase;
}
.mirs-domain-text { color: #a1a1aa; font-family: var(--f-mono); font-size: 12px; font-weight: 700; }
.mirs-title { font-size: 21px; font-weight: 900; color: #ffffff; margin: 0; letter-spacing: 0.5px; }
.mirs-desc { font-size: 13.8px; color: #d4d4d8; margin: 0; line-height: 1.6; max-width: 820px; }
.mirs-points { display: flex; gap: 18px; margin-top: 6px; flex-wrap: wrap; }
.mirs-point-item {
  font-size: 12.5px; font-weight: 700; color: #f4f4f5; display: inline-flex; align-items: center; gap: 6px;
}
.mirs-point-item::before { content: "■"; color: var(--c-red); font-size: 8px; }
.mirs-action-btn {
  background: var(--c-red); color: #ffffff; font-weight: 900; font-size: 14.5px;
  padding: 14px 28px; border-radius: 4px; white-space: nowrap; border: 1px solid var(--c-red);
  display: inline-flex; align-items: center; gap: 10px; z-index: 2; flex: none;
  box-shadow: 0 4px 16px rgba(220, 38, 38, 0.35);
  transition: all 0.2s ease;
}
.mirs-action-btn:hover {
  background: #ffffff; color: var(--c-black); border-color: #ffffff;
  box-shadow: 0 6px 22px rgba(255, 255, 255, 0.3); transform: translateY(-1px);
}

/* ============================================================
   双核心王牌卡片 (DUAL FLAGSHIP SPOTLIGHTS)
   ============================================================ */
.top-spotlight-container {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; margin: 30px 0 40px;
}
.spotlight-card {
  background: #ffffff; border: 2px solid var(--c-black); border-radius: var(--radius);
  padding: 28px 30px; display: flex; flex-direction: column; justify-content: space-between;
  box-shadow: var(--shadow-card); position: relative; overflow: hidden;
  transition: border-color 0.22s ease, box-shadow 0.22s ease, transform 0.22s ease;
}
.spotlight-card::before {
  content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 5px; background: var(--c-red);
}
.spotlight-card:hover { 
  box-shadow: 0 12px 32px rgba(220, 38, 38, 0.12); border-color: var(--c-red); transform: translateY(-2px);
}
.spotlight-badge {
  display: inline-flex; align-items: center; font-size: 11.5px; font-weight: 800;
  padding: 3px 10px; border-radius: 4px; text-transform: uppercase; font-family: var(--f-mono);
  background: var(--c-red-bg); color: var(--c-red); border: 1px solid var(--c-red-border);
  margin-bottom: 14px; width: fit-content;
}
.spotlight-title { font-size: 22px; font-weight: 900; color: var(--c-text-main); margin-bottom: 10px; }
.spotlight-desc { font-size: 14px; color: var(--c-text-body); line-height: 1.7; margin-bottom: 22px; flex: 1; }
.spotlight-features { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin-bottom: 24px; }
.spotlight-tag {
  font-size: 12.5px; font-weight: 700; color: var(--c-black); background: var(--c-bg);
  padding: 8px 12px; border-radius: 4px; border: 1px solid var(--c-border); display: flex; align-items: center; gap: 8px;
}
.spotlight-tag::before { content: "■"; color: var(--c-red); font-size: 8px; }
.spotlight-btn {
  display: flex; align-items: center; justify-content: center; gap: 8px; padding: 13px 20px;
  font-weight: 800; font-size: 14.5px; border-radius: 4px;
  background: var(--c-black); color: #ffffff; border: 1px solid var(--c-black);
  transition: all 0.2s ease;
}
.spotlight-btn:hover {
  background: var(--c-red); border-color: var(--c-red); color: #ffffff;
  box-shadow: 0 6px 18px rgba(220, 38, 38, 0.35);
}

/* 兼容原有 .duo-grid */
.duo-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.duo-card { border: 2px solid var(--c-black); border-top: 5px solid var(--c-red); padding: 26px; }
.duo-badge { display: inline-block; font-size: 11.5px; font-weight: 800; color: var(--c-red); font-family: var(--f-mono); margin-bottom: 12px; }
.duo-feats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; margin: 16px 0 20px; }
.duo-feats li { font-size: 12.5px; font-weight: 700; background: var(--c-bg); padding: 6px 10px; border-radius: 3px; border: 1px solid var(--c-border); }
.duo-link { color: var(--c-red); font-weight: 800; font-size: 14px; }

/* ============================================================
   零基础 5 步走通 (5-STEP LEARNING PATH)
   ============================================================ */
.steps-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; margin: 20px 0 35px; }
.step-card {
  background: #ffffff; border: 1px solid var(--c-border); border-top: 4px solid var(--c-black);
  border-radius: var(--radius); padding: 20px 18px; display: flex; flex-direction: column; justify-content: space-between;
  box-shadow: var(--shadow-card); transition: all 0.2s ease;
}
.step-card:hover {
  border-color: var(--c-red); border-top-color: var(--c-red); box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}
.step-no {
  font-family: var(--f-mono); font-size: 12px; font-weight: 900; color: var(--c-red);
  background: var(--c-red-bg); padding: 2px 8px; border-radius: 2px; width: fit-content;
}
.step-card h3 { font-size: 15.5px; font-weight: 900; margin: 10px 0 4px; }
.step-card .dur { font-family: var(--f-mono); font-size: 11.5px; color: var(--c-text-muted); font-weight: 700; }
.step-card p { font-size: 13px; color: var(--c-text-body); line-height: 1.6; margin: 10px 0 16px; flex: 1; }

/* ============================================================
   师资团队 (FACULTY & ASSISTANTS - 艺术字与工业战术徽章)
   ============================================================ */
.team-section-title {
  font-size: 14px; font-weight: 900; color: var(--c-black); letter-spacing: 1.5px;
  text-transform: uppercase; margin: 38px auto 22px; display: flex; align-items: center;
  justify-content: center; gap: 16px; text-align: center; max-width: 980px;
  font-family: var(--f-mono);
}
.team-section-title::before, .team-section-title::after {
  content: ''; flex: 1; height: 1px; background: var(--c-border-strong);
}
.team-section-title span { color: var(--c-text-muted); font-size: 12px; font-weight: 600; margin-left: 6px; }

.grid-team-main { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-bottom: 30px; }
.grid-team-assistant { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-bottom: 35px; }

.team-card-v2 {
  background: #ffffff; border: 1px solid var(--c-border); border-top: 3px solid #09090b;
  border-radius: var(--radius); padding: 22px 20px; position: relative; display: flex;
  flex-direction: column; justify-content: space-between; overflow: hidden;
  box-shadow: var(--shadow-card); transition: all 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}
.team-card-v2:hover {
  border-top-color: var(--c-red); border-color: var(--c-border-strong);
  box-shadow: 0 10px 28px rgba(220, 38, 38, 0.12); transform: translateY(-3px);
}
.tc-watermark {
  position: absolute; top: 12px; right: 14px; font-family: var(--f-mono); font-size: 11px;
  font-weight: 900; color: #e4e4e7; letter-spacing: 1px; pointer-events: none;
  user-select: none; transition: color 0.2s ease;
}
.team-card-v2:hover .tc-watermark { color: rgba(220, 38, 38, 0.45); }

.tc-header-v2 { display: flex; align-items: flex-start; gap: 14px; margin-bottom: 14px; }
.tc-avatar-v2 {
  width: 48px; height: 48px; min-width: 48px; border-radius: 4px;
  background: linear-gradient(145deg, #18181b 0%, #09090b 100%);
  border: 1px solid #3f3f46; border-left: 4px solid var(--c-red);
  display: flex; align-items: center; justify-content: center;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.2), 0 4px 12px rgba(0,0,0,0.25);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
  position: relative; transition: all 0.25s ease;
}
.tc-avatar-v2 .tc-insignia {
  font-family: var(--f-mono); font-size: 16px; font-weight: 900;
  color: #ffffff; letter-spacing: 1px; text-shadow: 0 0 10px rgba(220, 38, 38, 0.7);
}
.team-card-v2:hover .tc-avatar-v2 {
  border-left-color: #ffffff; background: linear-gradient(145deg, #dc2626 0%, #991b1b 100%);
  box-shadow: 0 0 18px rgba(220, 38, 38, 0.6); transform: scale(1.04);
}

.tc-name-box { display: flex; flex-direction: column; flex-grow: 1; min-width: 0; }
.tc-name-row { display: flex; align-items: center; justify-content: space-between; gap: 8px; flex-wrap: nowrap; }

/* 讲师姓名：规整粗体（统一标准字体栈，无斜体/倾斜/渐变） */
.tc-name-artistic {
  font-family: var(--f-sans);
  font-size: 20px; font-weight: 800; letter-spacing: 0.5px; margin: 0;
  color: var(--c-text-main); line-height: 1.3; transition: color 0.2s ease;
}
.team-card-v2:hover .tc-name-artistic { color: var(--c-red); }

/* 2 字姓名补 1 个占位行，使所有姓名统一为 3 行高度，头像/徽章对齐 */
.tc-name-slot { display: block; height: 1.3em; }

.tc-gender-badge {
  font-size: 10px; font-weight: 800; padding: 2px 7px; border-radius: 2px;
  font-family: var(--f-mono); white-space: nowrap; letter-spacing: 0.5px;
}
.gender-m { background: #f1f5f9; color: var(--c-black); border: 1px solid #cbd5e1; }
.gender-f { background: #fdf2f8; color: #db2777; border: 1px solid #fbcfe8; }
.tc-alias-v2 {
  font-size: 11px; color: var(--c-text-muted); font-family: var(--f-mono); margin-top: 4px;
  font-weight: 700; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

.tc-course-v2 {
  font-size: 12px; font-weight: 700; color: var(--c-red); background: var(--c-red-bg);
  padding: 9px 11px; border-radius: 4px; margin-bottom: 12px; border-left: 3px solid var(--c-red);
  min-height: 48px; display: flex; align-items: center; line-height: 1.45;
}
.tc-desc-v2 { font-size: 12.8px; color: var(--c-text-body); line-height: 1.65; margin-bottom: 16px; flex-grow: 1; }

/* 3个核心标签规范：严格3等分网格，每个标签严控≤4个字，整齐美观 */
.tc-tags-v2 {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px;
  margin-top: auto; padding-top: 14px; border-top: 1px solid var(--c-border);
}
.tc-tag-item {
  font-size: 11.5px; font-weight: 700; padding: 5px 2px; border-radius: 3px; background: #f4f4f5;
  color: #3f3f46; border: 1px solid #e4e4e7; text-align: center; white-space: nowrap;
  overflow: hidden; text-overflow: ellipsis; transition: all 0.16s ease;
}
.team-card-v2:hover .tc-tag-item {
  border-color: #fecaca; background: #fff5f5; color: #b91c1c;
}
.tc-tag-item:hover {
  border-color: #dc2626 !important; color: #ffffff !important; background: #dc2626 !important;
  transform: translateY(-1px);
}

/* ============================================================
   收费标准与班型 (COMPACT PRICING MATRIX)
   ============================================================ */
.pricing-section-container { margin: 40px auto 45px; max-width: 1080px; width: 100%; }
.pricing-header-wrap {
  display: flex; justify-content: space-between; align-items: center;
  border-bottom: 2px solid var(--c-black); padding-bottom: 14px; margin-bottom: 24px;
}
.chu-pricing-grid-onepage {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: 0 auto;
}
.chu-tier-card-compact {
  background: #ffffff; border: 1px solid var(--c-border); border-radius: var(--radius);
  padding: 22px 20px; display: flex; flex-direction: column; justify-content: space-between;
  box-shadow: var(--shadow-card); position: relative;
  transition: all 0.22s ease;
}
.chu-tier-card-compact.premium {
  border: 2px solid var(--c-red);
  box-shadow: 0 8px 24px rgba(220, 38, 38, 0.12), 0 0 16px rgba(220, 38, 38, 0.08);
  animation: premiumGlow 5s ease-in-out infinite;
}
@keyframes premiumGlow {
  0%, 100% {
    box-shadow: 0 8px 24px rgba(220, 38, 38, 0.12), 0 0 14px rgba(220, 38, 38, 0.06);
    border-color: var(--c-red);
  }
  50% {
    box-shadow: 0 10px 30px rgba(220, 38, 38, 0.22), 0 0 24px rgba(220, 38, 38, 0.18);
    border-color: #ef4444;
  }
}
.chu-tier-card-compact:hover {
  border-color: var(--c-black); box-shadow: 0 12px 32px rgba(0, 0, 0, 0.1); transform: translateY(-3px);
}
.chu-tier-card-compact.premium:hover {
  border-color: var(--c-red); box-shadow: 0 16px 36px rgba(220, 38, 38, 0.28); transform: translateY(-3px);
  animation: none;
}
.chu-tier-badge {
  position: absolute; top: 14px; right: 14px; font-size: 11px; font-weight: 900;
  background: var(--c-black); color: #ffffff; padding: 2px 8px; border-radius: 2px;
  font-family: var(--f-mono);
}
.chu-tier-card-compact.premium .chu-tier-badge { background: var(--c-red); }

.chu-price-header {
  text-align: center; padding-bottom: 14px; margin-bottom: 16px; border-bottom: 2px dashed var(--c-border);
}
.chu-price-header h2 {
  font-size: 34px; font-weight: 900; color: var(--c-text-main); margin: 0;
  font-family: var(--f-mono); letter-spacing: -1px; line-height: 1.1;
}
.premium .chu-price-header h2 { color: var(--c-red); }
.chu-price-unit { font-size: 12px; color: var(--c-text-muted); font-weight: 800; display: block; margin-top: 4px; }
.chu-tier-name { font-size: 15px; font-weight: 900; color: var(--c-text-main); margin: 8px 0 4px; }

.chu-compact-course-list { display: flex; flex-direction: column; gap: 10px; margin-bottom: 16px; flex: 1; }
.chu-compact-course-item {
  background: var(--c-bg); padding: 12px 14px; border-radius: 4px; border: 1px solid var(--c-border);
  cursor: pointer; position: relative;
  transition: all 0.2s ease;
}
.chu-compact-course-item:hover {
  background: #ffffff; border-color: var(--c-red); box-shadow: 0 4px 14px rgba(220, 38, 38, 0.1);
}
.chu-cc-top { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-bottom: 6px; }
.chu-cc-left-box { display: flex; align-items: center; gap: 7px; min-width: 0; flex: 1; }
.chu-cc-name { font-size: 13px; font-weight: 900; color: var(--c-text-main); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; flex: 1; }
.chu-cc-view-btn {
  font-size: 10.5px; font-weight: 800; color: var(--c-red); background: var(--c-red-bg);
  border: 1px solid var(--c-red-border); padding: 2px 7px; border-radius: 3px; white-space: nowrap;
  display: inline-flex; align-items: center; gap: 4px; flex-shrink: 0;
}
.chu-compact-course-item:hover .chu-cc-view-btn {
  background: var(--c-red); color: #ffffff; border-color: var(--c-red);
}
.chu-cc-note { font-size: 12px; color: var(--c-text-body); line-height: 1.55; }
.chu-cc-tip-bar {
  margin-top: 6px; font-size: 10.5px; font-family: var(--f-mono); color: var(--c-text-muted);
  border-top: 1px dashed var(--c-border); padding-top: 4px; display: flex; justify-content: space-between;
}

/* 兼容原有 .fee-grid */
.fee-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.fee-card {
  position: relative; display: flex; flex-direction: column; border-radius: var(--radius); padding: 24px;
  background: #ffffff; border: 1px solid var(--c-border); border-top: 4px solid var(--c-black);
  box-shadow: var(--shadow-card); transition: all 0.2s ease;
}
.fee-card:hover { transform: translateY(-3px); box-shadow: 0 16px 36px rgba(0, 0, 0, 0.08); border-color: var(--c-red); }
.fee-card.hot {
  border: 2px solid var(--c-red); border-top: 4px solid var(--c-red);
  box-shadow: 0 8px 24px rgba(220, 38, 38, 0.12);
  animation: premiumGlow 5s ease-in-out infinite;
}
.fee-card.hot:hover {
  animation: none;
  box-shadow: 0 16px 38px rgba(220, 38, 38, 0.28);
}
.fee-card.hot::before {
  content: "推荐"; position: absolute; top: 0; right: 18px; background: var(--c-red); color: #fff;
  font-size: 11px; font-weight: 800; padding: 2px 12px; border-radius: 0 0 4px 4px; font-family: var(--f-mono);
}
.fee-price { font-family: var(--f-mono); font-size: 34px; font-weight: 900; line-height: 1.1; color: var(--c-text-main); }
.fee-unit { font-size: 12px; color: var(--c-text-muted); font-weight: 700; margin-top: 4px; }
.fee-card .fc-name { font-size: 17px; font-weight: 900; color: var(--c-text-main); margin: 10px 0 8px; }
.fee-card .fc-intro { font-size: 13.5px; color: var(--c-text-body); line-height: 1.7; margin: 0 0 16px; flex: 1; }
.fee-points { margin: 0 0 18px; padding-top: 14px; border-top: 1px dashed var(--c-border-strong); display: flex; flex-direction: column; gap: 8px; }
.fee-points li { font-size: 13px; color: var(--c-text-body); display: flex; gap: 8px; align-items: flex-start; }
.fee-points li::before { content: "■"; color: var(--c-red); font-size: 8px; margin-top: 6px; flex: none; }
.fee-note { font-size: 13px; color: var(--c-text-muted); text-align: center; margin-top: 20px; line-height: 1.8; }

/* ============================================================
   办学承诺 (OUR PROMISES)
   ============================================================ */
.chu-promise-wrap {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin: 20px 0 45px;
}
.promise-card {
  background: #ffffff; border: 1px solid var(--c-border); border-radius: var(--radius);
  padding: 22px; box-shadow: var(--shadow-card); transition: all 0.2s ease;
}
.promise-card:hover { border-color: var(--c-red); transform: translateY(-2px); }
.promise-no {
  font-family: var(--f-mono); font-size: 22px; font-weight: 900; color: var(--c-red); display: block; margin-bottom: 6px;
}
.promise-title { font-size: 16px; font-weight: 900; color: var(--c-text-main); margin: 0 0 8px; }
.promise-desc { font-size: 13px; color: var(--c-text-body); margin: 0; line-height: 1.65; }

/* ============================================================
   教学档案体系 (THE ARCHIVE)
   ============================================================ */
.grid-files { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin: 20px 0 35px; }
.file-card {
  background: #ffffff; border: 1px solid var(--c-border); border-top: 3px solid var(--c-black);
  border-radius: var(--radius); padding: 22px; display: flex; flex-direction: column;
  justify-content: space-between; box-shadow: var(--shadow-card); transition: all 0.22s ease;
}
.file-card:hover {
  border-color: var(--c-red); border-top-color: var(--c-red); box-shadow: 0 8px 24px rgba(220, 38, 38, 0.1);
  transform: translateY(-2px);
}
.fc-tag-badge {
  font-size: 11px; color: var(--c-red); background: var(--c-red-bg); padding: 2px 8px;
  border-radius: 2px; width: fit-content; margin-bottom: 12px; font-weight: 800; border: 1px solid var(--c-red-border);
  font-family: var(--f-mono);
}
.fc-title { font-size: 18px; color: var(--c-text-main); margin: 0 0 4px; font-weight: 900; }
.fc-sub { font-size: 11.5px; color: var(--c-text-muted); font-family: var(--f-mono); font-weight: 700; letter-spacing: 0.5px; }
.fc-desc { font-size: 13.5px; color: var(--c-text-body); margin: 14px 0 18px; line-height: 1.65; flex: 1; }
.file-links { display: flex; flex-direction: column; gap: 8px; }

/* 兼容原有 .archive-card */
.archive-card {
  display: flex; flex-direction: column; justify-content: space-between; background: #ffffff;
  border: 1px solid var(--c-border); border-top: 3px solid var(--c-black); border-radius: var(--radius);
  padding: 22px; box-shadow: var(--shadow-card); transition: all 0.2s ease;
}
.archive-card:hover { border-color: var(--c-red); border-top-color: var(--c-red); transform: translateY(-2px); }
.archive-card .ac-tag {
  font-size: 11px; color: var(--c-red); background: var(--c-red-bg); border: 1px solid var(--c-red-border);
  padding: 2px 8px; display: inline-block; width: max-content; font-family: var(--f-mono); font-weight: 800;
}
.archive-card h3 { font-size: 17.5px; font-weight: 900; color: var(--c-text-main); margin: 14px 0 4px; }
.archive-card .ac-en { font-family: var(--f-mono); font-size: 11px; color: var(--c-text-muted); font-weight: 700; }
.archive-card p { font-size: 13px; color: var(--c-text-body); line-height: 1.65; margin: 12px 0 16px; flex: 1; }

/* ============================================================
   商业版本定制 (COMMERCIAL VERSION CUSTOMIZATION)
   ============================================================ */
.grid-versions { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin: 20px 0 35px; }
.ver-card-new {
  background: #ffffff; border: 2px solid var(--c-black); border-radius: var(--radius); padding: 26px 24px;
  display: flex; flex-direction: column; justify-content: space-between; box-shadow: var(--shadow-card);
  position: relative; transition: all 0.22s ease;
}
.ver-card-new::before {
  content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 4px; background: var(--c-black);
  transition: background 0.2s ease;
}
.ver-card-new:hover {
  border-color: var(--c-red); box-shadow: 0 10px 30px rgba(220, 38, 38, 0.12); transform: translateY(-2px);
}
.ver-card-new:hover::before { background: var(--c-red); }
.vc-top-bar {
  display: flex; justify-content: space-between; font-family: var(--f-mono); font-size: 11.5px;
  color: var(--c-text-muted); font-weight: 800;
}
.vc-level {
  color: var(--c-red); background: var(--c-red-bg); padding: 2px 8px; border-radius: 3px;
  border: 1px solid var(--c-red-border); font-size: 11px;
}
.vc-title-cn { font-size: 20px; color: var(--c-text-main); margin: 12px 0 4px; font-weight: 900; }
.vc-title-en { font-size: 11px; color: var(--c-text-muted); font-family: var(--f-mono); font-weight: 700; }
.vc-amount {
  font-size: 34px; font-weight: 900; color: var(--c-black); font-family: var(--f-mono); margin: 14px 0 6px;
  letter-spacing: -1px;
}
.vc-amount span { font-size: 20px; color: var(--c-red); margin-right: 4px; }
.vc-delivery-badge {
  font-size: 11.5px; color: var(--c-text-muted); font-family: var(--f-mono); font-weight: 700;
  margin-bottom: 16px; border-bottom: 2px dashed var(--c-border); padding-bottom: 10px; display: block;
}
.vc-feat-list { display: flex; flex-direction: column; gap: 10px; margin-bottom: 20px; flex: 1; }
.vc-feat-list li {
  font-size: 13px; color: var(--c-text-body); display: flex; align-items: baseline; gap: 8px; line-height: 1.55;
}
.vc-feat-list li::before { content: "→"; color: var(--c-red); font-weight: 900; font-size: 13px; }

/* ============================================================
   开发者军火库 (DEVELOPER ARSENAL TOOLS)
   ============================================================ */
.grid-armory { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin: 20px 0 35px; }
.arsenal-card {
  background: #ffffff; border: 1px solid var(--c-border); border-radius: var(--radius);
  padding: 18px; box-shadow: var(--shadow-subtle); display: flex; flex-direction: column;
  transition: all 0.2s ease;
}
.arsenal-card:hover {
  border-color: var(--c-red); box-shadow: 0 6px 18px rgba(220, 38, 38, 0.1); transform: translateY(-2px);
}
.arsenal-card h3 {
  font-size: 15px; color: var(--c-text-main); margin: 0 0 6px; font-weight: 900;
  display: flex; justify-content: space-between; align-items: center;
}
.ac-meta {
  display: flex; gap: 6px; font-size: 11px; color: var(--c-red); margin-bottom: 8px;
  font-weight: 800; font-family: var(--f-mono);
}
.ac-desc { font-size: 12.8px; color: var(--c-text-body); line-height: 1.6; flex: 1; margin-bottom: 10px; }
.ac-link { font-size: 12px; font-weight: 800; color: var(--c-black); align-self: flex-start; }
.arsenal-card:hover .ac-link { color: var(--c-red); }

/* ============================================================
   特殊定制与 VIP 服务 (VIP SERVICES)
   ============================================================ */
.grid-custom { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin: 20px 0 35px; }
.vip-card {
  background: #ffffff; border: 1px solid var(--c-border); border-left: 5px solid var(--c-red);
  border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow-card); display: block;
  transition: all 0.2s ease;
}
.vip-card:hover {
  border-color: var(--c-black); border-left-color: var(--c-red);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08); transform: translateY(-2px);
}
.vip-info h3 { font-size: 17px; color: var(--c-text-main); margin: 0 0 8px; font-weight: 900; }
.vip-info p { font-size: 13.5px; color: var(--c-text-body); margin: 0; line-height: 1.65; }

/* ============================================================
   底部转化横幅 (CONVERSION ACTION BANNER)
   ============================================================ */
.chu-action-banner {
  background: var(--c-black); border-left: 6px solid var(--c-red);
  border-radius: var(--radius); padding: 44px 32px; text-align: center; margin: 50px 0 65px;
  color: #ffffff; box-shadow: var(--shadow-dark); position: relative; overflow: hidden;
}
.chu-action-banner::before {
  content: 'CHUAN2 CONSULTATION'; position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  font-family: var(--f-mono); font-size: 6rem; font-weight: 900; color: rgba(255, 255, 255, 0.02);
  pointer-events: none; white-space: nowrap;
}
.chu-action-title {
  font-family: var(--f-serif); font-size: 24px; font-weight: 900; color: #ffffff; margin-bottom: 24px;
  letter-spacing: 1px; position: relative; z-index: 1;
}
.chu-action-info { display: flex; justify-content: center; gap: 24px; flex-wrap: wrap; position: relative; z-index: 1; }
.chu-contact-group {
  display: flex; align-items: center; gap: 14px; background: #18181b; padding: 14px 28px;
  border-radius: 6px; border: 1px solid #27272a; cursor: pointer; transition: all 0.2s ease;
}
.chu-contact-group:hover {
  border-color: var(--c-red); background: #222226; transform: translateY(-1px);
}
.chu-contact-group span.lbl { font-size: 13px; color: #a1a1aa; font-weight: 600; }
.chu-contact-text { font-family: var(--f-mono); font-size: 22px; font-weight: 800; color: #ffffff; }

/* ============================================================
   页脚 (FOOTER)
   ============================================================ */
.company-footer, .site-footer {
  background: #09090b; padding: 60px 0 35px; color: #a1a1aa; font-size: 13.5px;
  border-top: 2px solid var(--c-red); margin-top: 60px;
}
.footer-grid {
  display: grid; grid-template-columns: 1.6fr repeat(3, 1fr); gap: 40px; margin-bottom: 45px;
}
.footer-col h4, .f-col h4 {
  color: #ffffff; font-size: 15.5px; margin-bottom: 18px; border-left: 3px solid var(--c-red);
  padding-left: 10px; font-weight: 800;
}
.footer-col ul li, .f-links li { margin-bottom: 10px; font-size: 13.5px; }
.footer-col .f-intro { font-size: 13px; line-height: 1.95; color: #a1a1aa; margin: 0; max-width: 48ch; text-align: justify; }
.footer-col .f-intro b { display: inline-block; color: #ffffff; font-size: 14.5px; font-weight: 800; margin-bottom: 8px; letter-spacing: 0.3px; }
.footer-col a:hover, .f-links li a:hover { color: #ffffff; }
.f-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--f-mono);
  font-weight: 900;
  color: #ffffff;
  font-size: 1.25rem;
  margin-bottom: 14px;
  letter-spacing: 1.5px;
  text-decoration: none;
  white-space: nowrap;
}
.f-brand .brand-text {
  display: inline-flex;
  align-items: center;
  color: #ffffff;
}
.f-brand .brand-badge {
  font-size: 11px;
  background: var(--c-red);
  color: #fff;
  padding: 2px 6px;
  border-radius: 2px;
  letter-spacing: 1px;
  font-weight: 800;
  margin-left: 6px;
}
.footer-logo {
  height: 34px;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 0 6px rgba(234, 179, 8, 0.4));
  animation: logoGlow 4s infinite ease-in-out;
  transition: transform 0.25s ease, filter 0.25s ease;
  flex: none;
  display: block;
}
.f-brand:hover .footer-logo {
  animation: none;
  transform: scale(1.08);
  filter: drop-shadow(0 0 12px rgba(234, 179, 8, 0.85)) drop-shadow(0 0 3px rgba(255, 220, 100, 0.6));
}
.footer-bottom { border-top: 1px solid #27272a; padding-top: 20px; }
.f-bottom-row { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 12.5px; color: #71717a; }

/* ============================================================
   右侧停靠快速导航 (SIDE DOCK)
   ============================================================ */
.side-dock {
  position: fixed; right: 16px; top: 50%; transform: translateY(-50%);
  width: 145px; z-index: 800; display: flex; flex-direction: column; gap: 5px;
  transition: opacity 0.3s ease;
}
.side-dock.dock-hidden { opacity: 0; pointer-events: none; }
.sd-header {
  background: var(--c-black); border-left: 3px solid var(--c-red); padding: 9px 10px;
  font-size: 11.5px; color: #ffffff; font-weight: 900; font-family: var(--f-mono);
}
.sd-item {
  background: #ffffff; color: var(--c-text-main); padding: 9px 10px; font-size: 11.5px;
  border: 1px solid var(--c-border); border-right: 3px solid var(--c-black);
  display: flex; justify-content: space-between; align-items: center; box-shadow: var(--shadow-subtle);
  transition: all 0.18s ease; font-weight: 700;
}
.sd-item:hover {
  background: var(--c-black); color: #ffffff; border-right-color: var(--c-red);
}
.sd-top {
  background: var(--c-red); color: #ffffff; text-align: center; padding: 8px;
  font-size: 12px; font-weight: 900; cursor: pointer; border-radius: 0 0 3px 3px;
}
.sd-top:hover { background: var(--c-red-dark); }

/* ============================================================
   弹窗通用样式 (MODAL OVERLAY & DIALOGS)
   ============================================================ */
.modal-overlay, .syl-modal-overlay, .course-modal-overlay {
  display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  background: rgba(9, 9, 11, 0.82); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  z-index: 9999; justify-content: center; align-items: center; opacity: 0;
  transition: opacity 0.22s ease;
}
.modal-overlay.active, .syl-modal-overlay.active, .course-modal-overlay.active {
  display: flex; opacity: 1;
}

/* 微信咨询/小弹窗 */
.modal-box {
  background: #ffffff; border: 2px solid var(--c-black); border-top: 4px solid var(--c-red);
  padding: 32px; width: 420px; max-width: 92vw; max-height: 85vh; overflow-y: auto;
  border-radius: var(--radius); box-shadow: 0 25px 60px rgba(0, 0, 0, 0.4); text-align: center;
}
.m-title { color: var(--c-text-main); font-weight: 900; font-size: 1.35rem; margin-bottom: 6px; }
.m-sub { color: var(--c-text-muted); font-size: 12.5px; font-family: var(--f-mono); margin-bottom: 18px; line-height: 1.5; letter-spacing: 0.5px; }
.m-code-box {
  background: var(--c-bg); border: 2px dashed var(--c-red); padding: 16px;
  font-family: var(--f-mono); font-size: 1.8rem; color: var(--c-red); margin-bottom: 22px; font-weight: 900;
  letter-spacing: 2px; border-radius: var(--radius-sm); user-select: all;
}
.m-btn {
  background: var(--c-black); color: #ffffff; border: none; width: 100%; padding: 12px;
  font-weight: 900; border-radius: var(--radius-sm); cursor: pointer; font-size: 14px;
  transition: background-color 0.18s ease, transform 0.15s ease;
}
.m-btn:hover { background: var(--c-red); }
.m-close {
  background: none; border: none; color: var(--c-text-muted); cursor: pointer; font-size: 13px;
  margin-top: 14px; padding: 6px 12px; font-family: var(--f-mono); font-weight: 700;
  transition: color 0.18s ease; display: inline-block;
}
.m-close:hover { color: var(--c-red); }

/* 讲师/大纲弹窗 (syl-modal-box) */
.syl-modal-box {
  background: #ffffff; border: 2px solid var(--c-black); border-top: 4px solid var(--c-red);
  padding: 32px; max-width: 820px; width: 92%; max-height: 85vh; overflow-y: auto;
  border-radius: var(--radius); box-shadow: 0 25px 60px rgba(0, 0, 0, 0.4); text-align: left;
}
.syl-phase-box {
  background: var(--c-bg); border: 1px solid var(--c-border); padding: 16px 18px; border-radius: var(--radius-sm);
  margin-bottom: 14px; border-left: 4px solid var(--c-black);
  transition: border-left-color 0.2s ease, background 0.2s ease;
}
.syl-phase-box:hover { border-left-color: var(--c-red); background: #ffffff; }
.syl-phase-box h4 { color: var(--c-red); margin: 0 0 8px; font-weight: 900; font-size: 15px; }
.syl-phase-box ul { margin: 0; padding-left: 20px; }
.syl-phase-box ul li { font-size: 13px; color: var(--c-text-body); margin-bottom: 5px; line-height: 1.6; }
.syl-phase-box ul li strong { color: var(--c-text-main); }

/* 大纲章节内部排版 */
.syl-chapter { margin-bottom: 18px; border-bottom: 1px dashed var(--c-border); padding-bottom: 14px; }
.syl-chapter-title { font-size: 14.5px; font-weight: 900; color: var(--c-black); margin-bottom: 8px; display: flex; align-items: center; gap: 6px; }
.syl-chapter-title::before { content: '■'; color: var(--c-red); font-size: 8px; }
.syl-lesson-list { display: flex; flex-direction: column; gap: 6px; }
.syl-lesson-item { font-size: 13px; color: var(--c-text-body); line-height: 1.55; padding-left: 14px; position: relative; }
.syl-lesson-item::before { content: '·'; position: absolute; left: 4px; color: var(--c-red); font-weight: 900; }

/* 课程体系专属精美弹窗 (course-modal-box) */
.course-modal-box {
  background: #ffffff; border: 2px solid var(--c-black); border-top: 4px solid var(--c-red);
  padding: 28px 32px; max-width: 860px; width: 94%; max-height: 88vh; overflow-y: auto;
  border-radius: var(--radius); box-shadow: 0 25px 60px rgba(0, 0, 0, 0.4); text-align: left;
}
.cmb-header {
  border-bottom: 2px solid var(--c-black); padding-bottom: 14px; margin-bottom: 16px;
  display: flex; justify-content: space-between; align-items: flex-start; gap: 12px;
}
.cmb-title { font-size: 20px; font-weight: 900; color: var(--c-text-main); margin: 0; }
.cmb-price-tag { font-family: var(--f-mono); font-size: 22px; font-weight: 900; color: var(--c-red); }
.cmb-tabs-container {
  display: flex; gap: 8px; margin-bottom: 18px; border-bottom: 1px solid var(--c-border); padding-bottom: 10px;
  overflow-x: auto;
}
.cmb-tab-btn {
  background: var(--c-bg); border: 1px solid var(--c-border); color: var(--c-text-body);
  padding: 8px 16px; border-radius: var(--radius-sm); font-size: 12.5px; font-weight: 800; cursor: pointer;
  white-space: nowrap; transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}
.cmb-tab-btn:hover { border-color: var(--c-black); color: var(--c-text-main); }
.cmb-tab-btn.active {
  background: var(--c-black); color: #ffffff; border-color: var(--c-black);
}
.cmb-course-focus-bar {
  background: var(--c-red-bg); border: 1px solid var(--c-red-border); border-left: 4px solid var(--c-red);
  padding: 10px 14px; border-radius: var(--radius-sm); margin-bottom: 18px; font-size: 13px; color: var(--c-red-dark); font-weight: 800;
}
.cmb-module-card {
  background: var(--c-bg); border: 1px solid var(--c-border); border-left: 4px solid var(--c-black);
  padding: 16px 20px; border-radius: var(--radius-sm); margin-bottom: 14px;
  transition: border-left-color 0.2s ease, background 0.2s ease;
}
.cmb-module-card:hover {
  border-left-color: var(--c-red); background: #ffffff;
}
.cmb-module-title { font-size: 14.5px; font-weight: 900; color: var(--c-text-main); margin: 0 0 10px; }
.cmb-item-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
.cmb-item { font-size: 12.8px; color: var(--c-text-body); display: flex; align-items: center; gap: 8px; }
.cmb-item::before { content: "■"; color: var(--c-red); font-size: 7px; flex-shrink: 0; }
.cmb-btn-row { display: flex; gap: 10px; margin-top: 24px; }
@media (max-width: 680px) {
  .cmb-item-list { grid-template-columns: 1fr; }
  .cmb-btn-row { flex-direction: column; }
}

/* ============================================================
   5 节精选免费试听课组件 (FREE TRIAL SPOTLIGHT)
   ============================================================ */
.free-courses-wrap {
  margin-bottom: 48px;
}
.free-badge-lead {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--c-red-bg); border: 1px solid var(--c-red-border); color: var(--c-red-dark);
  font-family: var(--f-mono); font-size: 12px; font-weight: 800; padding: 4px 12px;
  border-radius: var(--radius-sm); margin-bottom: 14px; letter-spacing: 0.5px;
}
.free-courses-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 20px;
}
.free-card-clean {
  background: #ffffff; border: 1px solid var(--c-border); border-top: 4px solid var(--c-red);
  border-radius: var(--radius); padding: 22px 24px; display: flex; flex-direction: column;
  position: relative; transition: all 0.22s ease; box-shadow: var(--shadow-subtle);
}
.free-card-clean:hover {
  transform: translateY(-4px); border-color: var(--c-black); border-top-color: var(--c-red);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.08);
}
.fcc-header {
  display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 16px;
  flex-wrap: wrap; padding-bottom: 12px; border-bottom: 1px solid #f1f5f9;
}
.fcc-badges { display: flex; align-items: center; gap: 8px; }
.fcc-no {
  font-family: var(--f-mono); font-size: 13px; font-weight: 950; color: var(--c-red);
  letter-spacing: 0.5px;
}
.fcc-type {
  font-family: var(--f-mono); font-size: 11px; font-weight: 900; padding: 2px 7px;
  border-radius: 2px; text-transform: uppercase;
}
.fcc-type.type-txt { background: #fef2f2; color: #b91c1c; border: 1px solid #fecaca; }
.fcc-type.type-lua { background: #09090b; color: #ffffff; }
.fcc-dur { font-family: var(--f-mono); font-size: 12px; color: var(--c-text-muted); font-weight: 700; }

.fcc-teacher {
  display: flex; align-items: center; gap: 8px; background: #f8fafc; border: 1px solid #e2e8f0;
  padding: 4px 10px; border-radius: 3px; margin-left: auto;
}
.fcc-avatar {
  width: 20px; height: 20px; border-radius: 3px; background: var(--c-black); color: #ffffff;
  display: flex; align-items: center; justify-content: center; font-size: 10.5px; font-weight: 900;
  font-family: var(--f-mono);
}
.fcc-name { font-size: 12px; font-weight: 800; color: var(--c-black); }
.fcc-role { font-size: 11px; color: var(--c-text-muted); }

/* 两排饱满清晰大标题 (专为小白设计) */
.fcc-title-wrap { margin-bottom: 14px; }
.fcc-title-main {
  font-size: 19px; font-weight: 950; color: var(--c-black); margin: 0 0 6px; line-height: 1.35;
  letter-spacing: 0.3px;
}
.fcc-title-sub {
  font-size: 13.5px; color: var(--c-text-body); margin: 0; line-height: 1.55;
  font-weight: 600;
}

/* 粉色高质感核心亮点框 (说人话、接地气、激发求知欲) */
.fcc-highlight-box {
  display: flex; align-items: flex-start; gap: 8px;
  background: linear-gradient(135deg, #fff1f2 0%, #ffe4e6 100%);
  border: 1px solid #fecdd3; border-left: 3.5px solid #e11d48;
  border-radius: 4px; padding: 10px 12px; margin-bottom: 18px;
  box-shadow: 0 2px 6px rgba(225, 29, 72, 0.04);
}
.fcc-hl-icon {
  font-size: 13.5px; line-height: 1.4; flex-shrink: 0; color: #e11d48;
  filter: drop-shadow(0 1px 2px rgba(225, 29, 72, 0.2));
}
.fcc-hl-text {
  font-size: 12.5px; font-weight: 600; color: #881337; line-height: 1.55;
  letter-spacing: 0.15px;
}

.fcc-btn {
  display: flex; align-items: center; justify-content: center; gap: 8px; width: 100%;
  background: var(--c-black); color: #ffffff; padding: 11px 16px; font-weight: 900; font-size: 13.5px;
  border-radius: var(--radius-sm); text-decoration: none; margin-top: auto;
  transition: all 0.18s ease; letter-spacing: 0.5px;
}
.fcc-btn:hover { background: var(--c-red); color: #ffffff; transform: translateY(-1px); }
.fcc-arrow { font-family: var(--f-mono); font-size: 14px; transition: transform 0.18s ease; }
.fcc-btn:hover .fcc-arrow { transform: translateX(3px); }

/* ============================================================
   最新课程：左面 TXT，右面 LUA (DUAL COLUMNS)
   ============================================================ */
.recent-dual-wrap {
  display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: start;
}
.recent-dual-col {
  background: #ffffff; border: 1px solid var(--c-border); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow-subtle);
}
.rdc-header {
  padding: 16px 20px; display: flex; justify-content: space-between; align-items: center;
  border-bottom: 1px solid var(--c-border);
}
.rdc-header-txt { background: #fff5f5; border-top: 4px solid #dc2626; }
.rdc-header-lua { background: #fafafa; border-top: 4px solid #09090b; }
.rdc-title-box { display: flex; align-items: center; gap: 10px; }
.rdc-title { font-size: 16px; font-weight: 900; margin: 0; color: var(--c-text-main); }
.rdc-sub { font-size: 12px; color: var(--c-text-muted); font-family: var(--f-mono); }
.rdc-list {
  max-height: 820px; overflow-y: auto; padding: 10px 14px; display: flex; flex-direction: column; gap: 8px;
}
.rdc-item {
  display: flex; align-items: center; gap: 12px; padding: 10px 14px; background: #ffffff;
  border: 1px solid var(--c-border); border-radius: var(--radius-sm); text-decoration: none;
  transition: border-color 0.16s ease, background 0.16s ease, transform 0.12s ease;
}
.rdc-item:hover {
  border-color: var(--c-black); background: #fdfdfd; transform: translateX(3px);
}
.rdc-no {
  font-family: var(--f-mono); font-size: 12px; font-weight: 900; color: #a1a1aa; width: 26px; flex-shrink: 0;
}
.rdc-info { flex: 1; min-width: 0; }
.rdc-item-title {
  font-size: 13.5px; font-weight: 800; color: var(--c-text-main); margin: 0;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; line-height: 1.4;
}
.rdc-item:hover .rdc-item-title { color: var(--c-red); }
.rdc-meta { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.rdc-teacher {
  font-size: 11.5px; font-weight: 800; color: var(--c-text-main); background: var(--c-bg);
  padding: 2px 7px; border-radius: 3px; border: 1px solid var(--c-border);
}
.rdc-date { font-family: var(--f-mono); font-size: 11.5px; color: var(--c-text-muted); }
.rdc-arrow { font-size: 12px; color: #d4d4d8; transition: transform 0.16s ease, color 0.16s ease; }
.rdc-item:hover .rdc-arrow { transform: translateX(3px); color: var(--c-red); }

@media (max-width: 900px) {
  .recent-dual-wrap { grid-template-columns: 1fr; }
  .rdc-list { max-height: 600px; }
}

/* ============================================================
   教研团队全新战术通栏 (FACULTY HERO BANNER & 3-PILLAR MATRIX)
   ============================================================ */
.faculty-hero-banner {
  background: #ffffff; border: 1px solid var(--c-border); border-top: 4px solid var(--c-black);
  border-radius: var(--radius); padding: 28px 30px; margin-bottom: 28px; box-shadow: var(--shadow-card);
  position: relative; overflow: hidden;
}
.faculty-hero-banner::after {
  content: 'FACULTY'; position: absolute; right: 20px; top: 10px; font-family: var(--f-mono);
  font-size: 72px; font-weight: 950; color: rgba(0, 0, 0, 0.02); pointer-events: none; user-select: none;
}
.fhb-head {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 24px;
  margin-bottom: 24px; padding-bottom: 22px; border-bottom: 1px solid var(--c-border); flex-wrap: wrap;
}
.fhb-titles { flex: 1; min-width: 320px; }
.fhb-tag-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-bottom: 10px; }
.fhb-status-pill {
  display: inline-flex; align-items: center; gap: 6px; font-size: 11px; font-weight: 800;
  background: #fef2f2; color: #b91c1c; border: 1px solid #fecaca; padding: 2px 8px; border-radius: 2px;
  font-family: var(--f-mono);
}
.fhb-status-pill .pulse-dot { width: 6px; height: 6px; background: #dc2626; border-radius: 50%; display: inline-block; }
.fhb-meta-pill {
  font-size: 11px; font-weight: 700; background: #f4f4f5; color: #52525b;
  border: 1px solid #e4e4e7; padding: 2px 8px; border-radius: 2px; font-family: var(--f-mono);
}
.fhb-title {
  font-size: 26px; font-weight: 950; color: var(--c-black); margin: 0 0 6px;
  letter-spacing: 0.5px; display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap;
}
.fhb-title-en {
  font-family: var(--f-mono); font-size: 13px; font-weight: 800; color: var(--c-text-muted);
  letter-spacing: 1.5px; text-transform: uppercase;
}
.fhb-lead { font-size: 14px; color: var(--c-text-body); margin: 0; line-height: 1.6; }

.fhb-actions { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }

/* 三维硬核兜底战术矩阵 */
.fhb-pillars-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px;
}
.fhb-pillar-card {
  background: #fafafa; border: 1px solid var(--c-border); border-top: 3px solid #3f3f46;
  border-radius: 4px; padding: 18px 20px; display: flex; flex-direction: column;
  transition: all 0.2s ease;
}
.fhb-pillar-card:hover {
  background: #ffffff; border-color: var(--c-border-strong); transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.05);
}
.fhb-pillar-card.highlight-card {
  background: #fffafa; border-top-color: var(--c-red); border-color: #fecaca;
}
.fhb-pillar-card.highlight-card:hover {
  background: #ffffff; box-shadow: 0 6px 22px rgba(220, 38, 38, 0.08);
}
.fpc-header {
  display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px;
}
.fpc-badge {
  font-family: var(--f-mono); font-size: 10.5px; font-weight: 900; background: #e4e4e7;
  color: #18181b; padding: 2px 7px; border-radius: 2px; letter-spacing: 0.5px;
}
.fpc-tag {
  font-family: var(--f-mono); font-size: 10.5px; font-weight: 800; color: #71717a;
  border: 1px solid #e4e4e7; padding: 1px 6px; border-radius: 2px;
}
.fpc-title {
  font-size: 15px; font-weight: 900; color: var(--c-black); margin: 0 0 8px; line-height: 1.4;
}
.fpc-desc {
  font-size: 12.8px; color: var(--c-text-body); line-height: 1.65; margin: 0;
}

@media (max-width: 900px) {
  .fhb-pillars-grid { grid-template-columns: 1fr; }
  .fhb-head { flex-direction: column; }
}

/* ============================================================
   二级页面重构布局 (NEWCLASS & S.PHP 左右分栏)
   ============================================================ */
.s-layout {
  display: grid; grid-template-columns: 1fr 340px; gap: 32px; align-items: start;
}
.s-main { min-width: 0; }
.s-aside {
  position: sticky; top: 90px; display: flex; flex-direction: column; gap: 20px;
}
.s-hud-card {
  background: #ffffff; border: 1px solid var(--c-border); border-top: 4px solid var(--c-black);
  border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow-subtle);
}
.s-hud-card.red-top { border-top-color: var(--c-red); }
.s-hud-title {
  font-size: 15px; font-weight: 900; color: var(--c-text-main); margin: 0 0 14px;
  display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--c-border);
  padding-bottom: 10px;
}
.s-lesson-card {
  background: #ffffff; border: 1px solid var(--c-border); border-radius: var(--radius);
  margin-bottom: 0; overflow: hidden; transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.s-lesson-card:hover {
  border-color: var(--c-black); box-shadow: var(--shadow-card);
}
.slc-head {
  padding: 16px 20px; display: flex; gap: 14px; align-items: flex-start; background: #ffffff;
}
.slc-no {
  width: 38px; height: 38px; border-radius: 6px; background: var(--c-black); color: #ffffff;
  display: flex; align-items: center; justify-content: center; font-family: var(--f-mono);
  font-weight: 900; font-size: 14px; flex-shrink: 0;
}
.slc-info { flex: 1; min-width: 0; }
.slc-title-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 6px; }
.slc-title { font-size: 16px; font-weight: 900; color: var(--c-text-main); margin: 0; }
.slc-diff-chip {
  font-size: 11px; font-weight: 800; padding: 2px 7px; border-radius: 3px; font-family: var(--f-mono);
  background: var(--c-bg); color: var(--c-text-muted); border: 1px solid var(--c-border);
}
.slc-meta-row {
  display: flex; align-items: center; gap: 10px; font-size: 12px; color: var(--c-text-muted);
  font-family: var(--f-mono); margin-bottom: 8px;
}
.slc-summary {
  font-size: 13.5px; color: var(--c-text-body); line-height: 1.65; margin: 0;
  background: var(--c-bg); padding: 10px 14px; border-radius: var(--radius-sm); border-left: 3px solid var(--c-red);
}
.slc-action { flex-shrink: 0; display: flex; flex-direction: column; align-items: flex-end; gap: 6px; }
.slc-play-btn {
  display: inline-flex; align-items: center; gap: 6px; background: var(--c-black); color: #ffffff;
  font-weight: 800; font-size: 12.5px; padding: 8px 14px; border-radius: var(--radius-sm); text-decoration: none;
  transition: background 0.18s ease;
}
.slc-play-btn:hover { background: var(--c-red); color: #ffffff; }
.slc-body {
  border-top: 1px solid var(--c-border); padding: 16px 20px; background: #fafafa;
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
}
.slc-block h5 {
  font-size: 12.5px; font-weight: 900; color: var(--c-black); margin: 0 0 8px; display: flex; align-items: center; gap: 6px;
}
.slc-block h5::before { content: '■'; color: var(--c-red); font-size: 7px; }
.slc-list { margin: 0; padding-left: 18px; font-size: 12.5px; color: var(--c-text-body); line-height: 1.6; }
.slc-list li { margin-bottom: 4px; }

.slc-details { border-top: 1px solid var(--c-border); }
.slc-details > summary {
  list-style: none; cursor: pointer; user-select: none;
  display: flex; align-items: center; gap: 8px;
  padding: 11px 20px; background: #f4f4f5;
  font-family: var(--f-mono); font-size: 12.5px; font-weight: 800; color: var(--c-black);
  transition: background 0.18s ease, color 0.18s ease;
}
.slc-details > summary::-webkit-details-marker { display: none; }
.slc-details > summary::before {
  content: '＋'; color: var(--c-red); font-size: 13px; font-weight: 900; line-height: 1;
}
.slc-details[open] > summary::before { content: '－'; }
.slc-details > summary:hover { background: var(--c-red-bg); color: var(--c-red); }
.slc-details-hint { margin-left: auto; font-size: 11px; font-weight: 800; color: var(--c-text-muted); }
.slc-details[open] > summary { border-bottom: 1px solid var(--c-border); }

@media (max-width: 992px) {
  .s-layout { grid-template-columns: 1fr; }
  .s-aside { position: static; }
  .slc-body { grid-template-columns: 1fr; }
}

/* ============================================================
   全站悬浮客服 (FLOATING KEFU) · 微动提示与品质过渡
   ============================================================ */
.floating-kefu { position: fixed; right: 24px; bottom: 85px; z-index: 900; }
.kefu-toggle {
  width: 54px; height: 54px; border-radius: 50%; background: var(--c-red); color: #fff; border: none;
  cursor: pointer; box-shadow: 0 6px 20px rgba(220, 38, 38, 0.4), 0 0 0 0 rgba(220, 38, 38, 0.4);
  display: flex; align-items: center; justify-content: center;
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), background-color 0.2s ease, box-shadow 0.2s ease;
  animation: kefuBreath 6s ease-in-out infinite;
}
.kefu-toggle:hover {
  background: var(--c-red-dark);
  transform: scale(1.08);
  box-shadow: 0 8px 26px rgba(220, 38, 38, 0.6);
  animation: none;
}
.kefu-toggle:active {
  transform: scale(0.95);
}
@keyframes kefuBreath {
  0%, 80%, 100% {
    transform: scale(1);
    box-shadow: 0 6px 20px rgba(220, 38, 38, 0.4);
  }
  85% {
    transform: scale(1.06) rotate(-4deg);
    box-shadow: 0 8px 24px rgba(220, 38, 38, 0.55), 0 0 16px rgba(220, 38, 38, 0.35);
  }
  90% {
    transform: scale(1.06) rotate(4deg);
  }
  95% {
    transform: scale(1.03) rotate(0deg);
  }
}
.kefu-panel {
  position: absolute; right: 0; bottom: 70px; width: 300px; background: #ffffff;
  border: 2px solid var(--c-black); border-top: 4px solid var(--c-red);
  border-radius: var(--radius); box-shadow: 0 16px 40px rgba(0, 0, 0, 0.22); display: none;
}
.kefu-panel.open { display: block; animation: panelFade 0.24s cubic-bezier(0.16, 1, 0.3, 1); }
@keyframes panelFade { from { opacity: 0; transform: translateY(10px) scale(0.98); } to { opacity: 1; transform: translateY(0) scale(1); } }
.kefu-header { padding: 16px; border-bottom: 1px solid var(--c-border); position: relative; }
.kefu-header h3 { margin: 0; font-size: 16px; color: var(--c-text-main); font-weight: 900; }
.kefu-subtitle { margin: 4px 0 0; font-size: 12px; color: var(--c-text-muted); }
.kefu-close { position: absolute; top: 14px; right: 14px; background: none; border: none; color: var(--c-text-muted); cursor: pointer; font-size: 16px; }
.kefu-body { padding: 16px; }
.kefu-item { margin-bottom: 16px; text-align: center; }
.kefu-qr { width: 170px; height: 170px; object-fit: contain; border: 1px solid var(--c-border); background: #fff; }
.kefu-name { margin: 8px 0 2px; font-size: 14px; font-weight: 800; color: var(--c-text-main); }
.kefu-id { margin: 0; font-size: 12.5px; color: var(--c-text-body); font-family: var(--f-mono); font-weight: 700; }
.kefu-scope { margin: 4px 0 8px; font-size: 12px; color: var(--c-text-muted); }

/* ============================================================
   导师联系方式弹窗 (MENTOR CONTACT MODAL)
   ============================================================ */
.tc-modal { position: fixed; inset: 0; z-index: 1000; display: none; }
.tc-modal.open { display: block; }
.tc-modal-backdrop { position: absolute; inset: 0; background: rgba(10, 10, 12, 0.62); animation: tcFade 0.18s ease; }
.tc-modal-panel {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  width: min(92vw, 380px); background: #ffffff;
  border: 2px solid var(--c-black); border-top: 4px solid var(--c-red);
  border-radius: var(--radius); box-shadow: var(--shadow-dark); overflow: hidden;
  animation: tcPop 0.2s ease;
}
@keyframes tcFade { from { opacity: 0; } to { opacity: 1; } }
@keyframes tcPop {
  from { opacity: 0; transform: translate(-50%, -46%) scale(0.97); }
  to { opacity: 1; transform: translate(-50%, -50%) scale(1); }
}
.tc-modal-close {
  position: absolute; top: 10px; right: 12px; z-index: 2; padding: 4px; background: none; border: none;
  color: var(--c-text-muted); font-size: 20px; line-height: 1; cursor: pointer; transition: color 0.18s ease;
}
.tc-modal-close:hover { color: var(--c-red); }
.tc-modal-head { padding: 20px 20px 14px; border-bottom: 1px solid var(--c-border); }
.tc-modal-kicker { font-family: var(--f-mono); font-size: 10.5px; font-weight: 800; color: var(--c-red); letter-spacing: 0.04em; }
.tc-modal-title { margin: 6px 0 4px; font-size: 18px; font-weight: 900; color: var(--c-black); }
.tc-modal-sub { margin: 0; font-size: 12.5px; color: var(--c-text-muted); }
.tc-modal-body { padding: 18px 20px 20px; }
.tc-modal-qr { text-align: center; margin-bottom: 16px; }
.tc-modal-qr img {
  width: 200px; height: 200px; object-fit: contain; background: #fff;
  border: 1px solid var(--c-border); border-radius: var(--radius-sm);
}
.tc-modal-row {
  display: flex; align-items: center; gap: 10px; padding: 10px 12px; margin-bottom: 12px;
  background: var(--c-bg); border: 1px solid var(--c-border); border-radius: var(--radius-sm);
}
.tc-modal-label { flex: 0 0 auto; font-size: 12px; color: var(--c-text-muted); }
.tc-modal-id { flex: 1 1 auto; font-family: var(--f-mono); font-size: 13.5px; font-weight: 800; color: var(--c-text-main); }

/* ============================================================
   表单与表格 (FORMS & TABLES)
   ============================================================ */
.tbl { width: 100%; border-collapse: collapse; background: #fff; font-size: 14px; border: 1px solid var(--c-border); }
.tbl th { background: var(--c-black); text-align: left; padding: 12px 14px; font-weight: 800; color: #ffffff; font-family: var(--f-mono); font-size: 13px; }
.tbl td { padding: 12px 14px; border-bottom: 1px solid var(--c-border); vertical-align: top; }
.tbl tr:nth-child(even) td { background: #fafafa; }
.tbl tr:hover td { background: #fff5f5; }

.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13.5px; font-weight: 800; color: var(--c-text-main); margin-bottom: 6px; }
.field .req { color: var(--c-red); }
.input, select.input, textarea.input {
  width: 100%; height: 44px; padding: 0 14px; border: 1px solid var(--c-border-strong); border-radius: var(--radius-sm);
  font-size: 14px; font-family: var(--f-sans); background: #ffffff; color: var(--c-text-body); outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.input:focus, select.input:focus, textarea.input:focus {
  border-color: var(--c-red);
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.14);
}
}
textarea.input { height: auto; padding: 10px 14px; resize: vertical; line-height: 1.6; }
.input:focus { border-color: var(--c-red); box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.12); }
.f-hint { font-size: 12px; color: var(--c-text-muted); margin-top: 4px; }
.f-err { font-size: 12px; color: var(--c-red); margin-top: 4px; }

/* ============================================================
   Toast 消息提示
   ============================================================ */
.toast {
  position: fixed; top: 20px; left: 50%; transform: translateX(-50%) translateY(-16px);
  width: min(420px, 90vw); min-height: 44px; background: var(--c-black); color: #fff;
  border-left: 4px solid var(--c-ok); border-radius: var(--radius-sm); display: flex;
  align-items: center; justify-content: center; padding: 10px 18px; font-size: 14px;
  box-shadow: var(--shadow-dark); opacity: 0; transition: 0.25s; z-index: 10000; pointer-events: none;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast-err { border-left-color: var(--c-red); }

/* ============================================================
   二级页公共结构 (SHARED PAGE STRUCTURE)
   页头 / 区块 / 提示条 / 会员两栏 / 统计 / 状态 / 报价 / CTA
   ============================================================ */

/* ---- 二级页页头 ---- */
.page-hero {
  background: #ffffff; border-bottom: 2px solid var(--c-black);
  padding: 52px 0 42px; position: relative; overflow: hidden;
}
.page-hero::before {
  content: "CHUAN2 DEV"; position: absolute; right: -20px; top: 50%; transform: translateY(-50%);
  font-family: var(--f-mono); font-weight: 900; font-size: 5.5rem; color: rgba(0, 0, 0, 0.025);
  pointer-events: none; white-space: nowrap; user-select: none;
}
.page-hero .container { position: relative; z-index: 1; }
.page-hero h1 {
  font-family: var(--f-serif); font-size: 2.35rem; font-weight: 900; color: var(--c-text-main);
  line-height: 1.25; letter-spacing: -0.5px; margin: 0 0 12px;
}
.page-hero p { font-size: 15px; color: var(--c-text-muted); line-height: 1.8; max-width: 780px; margin: 0; }

/* ---- 内容区块 ---- */
.section { padding: 46px 0; }
.section.alt {
  background: var(--c-bg-subtle);
  border-top: 1px solid var(--c-border); border-bottom: 1px solid var(--c-border);
}

/* ---- 提示条 ---- */
.notice {
  background: var(--c-red-bg); border: 1px solid var(--c-red-border); border-left: 4px solid var(--c-red);
  border-radius: var(--radius-sm); padding: 12px 16px; font-size: 13.5px; line-height: 1.7;
  color: var(--c-text-body);
}
.notice b { color: var(--c-red); }

/* ---- 会员中心两栏布局 ---- */
.member-wrap { display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: 24px; align-items: start; }
.mem-nav {
  background: #ffffff; border: 1px solid var(--c-border); border-radius: var(--radius);
  box-shadow: var(--shadow-card); overflow: hidden; display: flex; flex-direction: column;
  position: sticky; top: 78px;
}
.mn-user {
  padding: 18px 18px 14px; background: var(--c-black); color: #ffffff;
  border-bottom: 2px solid var(--c-red); font-size: 14px;
}
.mn-link {
  display: block; padding: 12px 18px; font-size: 14px; font-weight: 600; color: var(--c-text-body);
  border-bottom: 1px solid var(--c-border); border-left: 3px solid transparent;
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}
.mn-link:hover { background: var(--c-bg-subtle); color: var(--c-text-main); border-left-color: var(--c-red); }
.mn-link.active { background: var(--c-red-bg); color: var(--c-red); border-left-color: var(--c-red); font-weight: 800; }

/* ---- 统计卡片 ---- */
.stat-cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.stat {
  background: #ffffff; border: 1px solid var(--c-border); border-left: 4px solid var(--c-black);
  border-radius: var(--radius-sm); padding: 16px 18px; box-shadow: var(--shadow-card);
}
.stat b { display: block; font-family: var(--f-mono); font-size: 26px; font-weight: 900; color: var(--c-text-main); line-height: 1.1; }
.stat span { display: block; margin-top: 4px; font-size: 12.5px; color: var(--c-text-muted); }

/* ---- 状态徽章 ---- */
.st {
  display: inline-flex; align-items: center; gap: 4px; font-family: var(--f-mono);
  font-size: 12px; font-weight: 800; letter-spacing: 0.5px; white-space: nowrap;
  padding: 2px 10px; border-radius: 20px; border: 1px solid transparent;
}
.st-green { background: var(--c-ok-bg); color: var(--c-ok); border-color: var(--c-ok-border); }
.st-orange { background: #fffbeb; color: #b45309; border-color: #fde68a; }
.st-blue { background: #eff6ff; color: #1d4ed8; border-color: #bfdbfe; }
.st-gray { background: #f4f4f5; color: #52525b; border-color: var(--c-border); }

/* ---- 勾选行 ---- */
.check { display: flex; align-items: flex-start; gap: 8px; font-size: 13.5px; color: var(--c-text-body); line-height: 1.7; cursor: pointer; }
.check input[type="checkbox"] { flex: none; width: 15px; height: 15px; margin-top: 3px; accent-color: var(--c-red); }

/* ---- 报价与渐变字 ---- */
.price { font-family: var(--f-mono); font-weight: 900; color: var(--c-red); line-height: 1.15; }
.price small { font-size: 12px; color: var(--c-text-muted); font-weight: 400; }
.grad { color: var(--c-red); }
@supports ((-webkit-background-clip: text) or (background-clip: text)) {
  .grad {
    background: linear-gradient(92deg, #dc2626 0%, #f97316 100%);
    -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
  }
}

/* ---- 收费页页头 ---- */
.fee-hero {
  background: var(--c-black); color: #ffffff; padding: 56px 0 46px;
  position: relative; overflow: hidden; border-bottom: 2px solid var(--c-red);
}
.fee-hero::before {
  content: "TUITION"; position: absolute; right: -16px; top: 50%; transform: translateY(-50%);
  font-family: var(--f-mono); font-weight: 900; font-size: 6rem; color: rgba(255, 255, 255, 0.03);
  pointer-events: none; white-space: nowrap; user-select: none;
}
.fee-hero .container { position: relative; z-index: 1; }
.fee-hero h1 { color: #ffffff; font-family: var(--f-serif); font-size: 2.35rem; font-weight: 900; line-height: 1.25; margin: 0 0 12px; }
.fee-hero p { color: #a1a1aa; font-size: 15px; line-height: 1.8; max-width: 800px; margin: 0; }
.fee-badge {
  display: inline-flex; align-items: center; font-family: var(--f-mono); font-size: 12px; font-weight: 800;
  letter-spacing: 1px; color: #ffffff; background: var(--c-red); padding: 4px 12px;
  border-radius: 3px; margin-bottom: 16px;
}

/* ---- 差异化栏目页头（每个栏目一套专属风格与配色） ---- */
.px-hero { position: relative; overflow: hidden; padding: 56px 0 46px; }
.px-hero .container { position: relative; z-index: 1; }
.px-hero h1 {
  font-family: var(--f-serif); font-size: 2.35rem; font-weight: 900;
  line-height: 1.25; letter-spacing: -0.5px; margin: 0 0 12px;
}
.px-hero p { font-size: 15px; line-height: 1.8; max-width: 800px; margin: 0; }
.px-badge {
  display: inline-flex; align-items: center; font-family: var(--f-mono); font-size: 12px; font-weight: 800;
  letter-spacing: 1px; padding: 4px 12px; border-radius: 3px; margin-bottom: 16px;
}

/* 1 学习路径 · 翡翠绿 */
.hero-path { background: #f0fdf4; border-bottom: 2px solid #059669; }
.hero-path::before { content: "PATH"; position: absolute; right: -18px; top: 50%; transform: translateY(-50%); font-family: var(--f-mono); font-weight: 900; font-size: 6.5rem; color: rgba(5,150,105,0.07); pointer-events: none; white-space: nowrap; user-select: none; }
.hero-path::after { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 5px; background: linear-gradient(180deg, #059669, #34d399); }
.hero-path h1 { color: #064e3b; }
.hero-path h1 .hl { color: #059669; }
.hero-path p { color: #475569; }
.hero-path .px-badge { color: #ffffff; background: #059669; }

/* 2 工具库 · 深蓝终端青 */
.hero-tools { background: #0f172a; border-bottom: 2px solid #06b6d4; }
.hero-tools::before { content: "_TOOLS"; position: absolute; right: -10px; top: 50%; transform: translateY(-50%); font-family: var(--f-mono); font-weight: 900; font-size: 6.5rem; color: rgba(6,182,212,0.08); pointer-events: none; white-space: nowrap; user-select: none; }
.hero-tools::after { content: ""; position: absolute; inset: 0; background-image: linear-gradient(rgba(6,182,212,0.07) 1px, transparent 1px), linear-gradient(90deg, rgba(6,182,212,0.07) 1px, transparent 1px); background-size: 34px 34px; pointer-events: none; }
.hero-tools h1 { color: #ffffff; }
.hero-tools h1 .hl { color: #22d3ee; }
.hero-tools p { color: #94a3b8; }
.hero-tools .px-badge { color: #0f172a; background: #06b6d4; }
.hero-tools .input { background: rgba(255,255,255,0.06); border-color: rgba(6,182,212,0.4); color: #ffffff; }
.hero-tools .input::placeholder { color: #64748b; }
.hero-tools .btn-dark { background: #06b6d4; color: #0f172a; border-color: #06b6d4; }

/* 3 商业定制 · 靛紫渐变 */
.hero-custom { background: linear-gradient(120deg, #1e1b4b 0%, #312e81 55%, #4c1d95 100%); border-bottom: 2px solid #a78bfa; }
.hero-custom::before { content: "CUSTOM"; position: absolute; right: -14px; top: 50%; transform: translateY(-50%); font-family: var(--f-mono); font-weight: 900; font-size: 6.2rem; color: rgba(167,139,250,0.1); pointer-events: none; white-space: nowrap; user-select: none; }
.hero-custom::after { content: ""; position: absolute; top: -60px; right: 10%; width: 200px; height: 200px; border-radius: 50%; background: radial-gradient(circle, rgba(167,139,250,0.4), transparent 70%); pointer-events: none; }
.hero-custom h1 { color: #ffffff; }
.hero-custom h1 .hl { color: #c4b5fd; }
.hero-custom p { color: #c7d2fe; }
.hero-custom .px-badge { color: #1e1b4b; background: linear-gradient(90deg, #a78bfa, #818cf8); }

/* 4 就业服务 · 暖橙斜纹 */
.hero-job { background: #fff7ed; border-bottom: 2px solid #ea580c; }
.hero-job::before { content: "CAREER"; position: absolute; right: -16px; top: 50%; transform: translateY(-50%); font-family: var(--f-mono); font-weight: 900; font-size: 6.2rem; color: rgba(234,88,12,0.08); pointer-events: none; white-space: nowrap; user-select: none; }
.hero-job::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 6px; background: repeating-linear-gradient(135deg, #ea580c 0 14px, #fdba74 14px 28px); }
.hero-job h1 { color: #7c2d12; }
.hero-job h1 .hl { color: #ea580c; }
.hero-job p { color: #57534e; }
.hero-job .px-badge { color: #ffffff; background: #ea580c; }

/* 5 师资中心 · 深墨绿 */
.hero-teacher { background: #042f2e; border-bottom: 2px solid #14b8a6; }
.hero-teacher::before { content: "FACULTY"; position: absolute; right: -12px; top: 50%; transform: translateY(-50%); font-family: var(--f-mono); font-weight: 900; font-size: 6rem; color: rgba(20,184,166,0.1); pointer-events: none; white-space: nowrap; user-select: none; }
.hero-teacher::after { content: ""; position: absolute; right: 16%; bottom: -34px; width: 130px; height: 130px; border: 2px solid rgba(20,184,166,0.3); border-radius: 50%; pointer-events: none; }
.hero-teacher h1 { color: #ffffff; }
.hero-teacher h1 .hl { color: #5eead4; }
.hero-teacher p { color: #99f6e4; }
.hero-teacher .px-badge { color: #042f2e; background: #14b8a6; }

/* 6 关于我们 · 品牌红 */
.hero-about { background: #ffffff; border-bottom: 2px solid var(--c-black); }
.hero-about::before { content: "ABOUT"; position: absolute; right: -10px; top: 50%; transform: translateY(-50%); font-family: var(--f-mono); font-weight: 900; font-size: 6.5rem; color: rgba(220,38,38,0.055); pointer-events: none; white-space: nowrap; user-select: none; }
.hero-about::after { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 4px; background: linear-gradient(90deg, #dc2626 0 30%, #f97316 30% 52%, #18181b 52% 100%); }
.hero-about h1 { color: var(--c-text-main); }
.hero-about h1 .hl { color: var(--c-red); }
.hero-about p { color: var(--c-text-muted); }
.hero-about .px-badge { color: #ffffff; background: var(--c-black); }

/* 7 会员中心 · 黑金 */
.hero-member { background: linear-gradient(135deg, #18181b 0%, #27272a 100%); border-bottom: 2px solid #d4af37; }
.hero-member::before { content: "MEMBER"; position: absolute; right: -14px; top: 50%; transform: translateY(-50%); font-family: var(--f-mono); font-weight: 900; font-size: 6.2rem; color: rgba(212,175,55,0.1); pointer-events: none; white-space: nowrap; user-select: none; }
.hero-member::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 3px; background: linear-gradient(90deg, transparent, #d4af37, transparent); }
.hero-member h1 { color: #ffffff; }
.hero-member h1 .hl { color: #d4af37; }
.hero-member p { color: #d4d4d8; }
.hero-member .px-badge { color: #18181b; background: #d4af37; }

/* ---- 定制方案卡 ---- */
.plan-form {
  font-family: var(--f-mono); font-size: 11.5px; font-weight: 800; color: var(--c-red);
  background: var(--c-red-bg); border: 1px solid var(--c-red-border); padding: 2px 8px;
  border-radius: 3px; letter-spacing: 0.5px; white-space: nowrap;
}
.plan-feats { list-style: none; padding: 0; margin: 12px 0 16px; }
.plan-feats li { position: relative; padding-left: 20px; font-size: 13.5px; color: var(--c-text-body); line-height: 1.8; margin-bottom: 6px; }
.plan-feats li::before { content: '▸'; position: absolute; left: 0; top: 0; color: var(--c-red); font-weight: 900; }

/* ---- 报名 / 咨询 CTA 通栏 ---- */
.cta-band {
  display: flex; align-items: center; justify-content: space-between; gap: 28px; flex-wrap: wrap;
  background: var(--c-black); color: #ffffff; border-left: 4px solid var(--c-red);
  border-radius: var(--radius); padding: 28px 32px; box-shadow: var(--shadow-dark);
  position: relative; overflow: hidden;
}
.cta-band::after {
  content: ''; position: absolute; right: -60px; top: -60px; width: 220px; height: 220px;
  background: radial-gradient(circle, rgba(220, 38, 38, 0.22) 0%, rgba(220, 38, 38, 0) 70%);
  pointer-events: none;
}
.cta-main { position: relative; z-index: 1; flex: 1; min-width: 260px; }
.cta-main b { display: block; font-size: 20px; font-weight: 900; color: #ffffff; margin-bottom: 6px; }
.cta-main p { margin: 0; font-size: 14px; color: #a1a1aa; line-height: 1.7; }
.cta-contacts { display: flex; flex-wrap: wrap; gap: 6px 22px; margin-top: 12px; font-size: 13px; color: #d4d4d8; }
.cta-contacts span b { color: var(--c-red-glow); }
.cta-band .btn { position: relative; z-index: 1; flex: none; }

/* 全站统一联系方式卡片：微信二维码 + 微信号 + 电话（单客服口径） */
.contact-strip {
  position: relative; z-index: 1; display: flex; align-items: center; gap: 16px;
  margin-top: 16px; max-width: 440px; padding: 12px 16px;
  background: rgba(255, 255, 255, 0.05); border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 10px;
}
.contact-strip .cs-qr { flex: none; display: flex; flex-direction: column; align-items: center; gap: 6px; }
.contact-strip .cs-qr img { display: block; width: 84px; height: 84px; border-radius: 8px; background: #fff; padding: 4px; }
.contact-strip .cs-qr span { font-size: 11px; letter-spacing: 0.5px; color: #a1a1aa; }
.contact-strip .cs-info { display: flex; flex-direction: column; gap: 8px; min-width: 0; }
.contact-strip .cs-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.contact-strip .cs-k { flex: none; width: 32px; font-family: var(--f-mono); font-size: 11px; letter-spacing: 1px; color: #a1a1aa; }
.contact-strip .cs-v { font-family: var(--f-mono); font-size: 16px; font-weight: 800; letter-spacing: 0.5px; color: #fff; }
.contact-strip .cs-v--addr { font-family: inherit; font-size: 12.5px; font-weight: 600; letter-spacing: 0; color: #d4d4d8; }
.contact-strip .cs-btn {
  flex: none; font-size: 11.5px; line-height: 1; color: #fca5a5; background: transparent;
  border: 1px solid rgba(220, 38, 38, 0.55); border-radius: 5px; padding: 5px 9px;
  cursor: pointer; text-decoration: none; transition: 0.15s;
}
.contact-strip .cs-btn:hover { background: var(--c-red); border-color: var(--c-red); color: #fff; }
.contact-strip .cs-hours { margin: 0; font-size: 12px; color: #a1a1aa; }
@media (max-width: 560px) {
  .contact-strip { max-width: none; }
  .contact-strip .cs-v { font-size: 15px; }
}

/* ---- 零散工具类 ---- */
.f-grid { margin-bottom: 20px; }
.fc-top { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.t-avatar {
  flex: none; width: 56px; height: 56px; border-radius: 50%; background: var(--c-black); color: #ffffff;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--f-mono); font-size: 20px; font-weight: 800;
}
.t-chip-name { font-weight: 800; }
.tl-body { min-width: 0; }
.tag-dark { background: var(--c-black); color: #ffffff; border: 1px solid var(--c-black); }
.s-lessons-stream { display: flex; flex-direction: column; gap: 14px; }
.mt12 { margin-top: 12px; } .mb12 { margin-bottom: 12px; }

/* ---- 作业截图缩略图 ---- */
.hw-shots { display: flex; flex-wrap: wrap; gap: 10px; }
.hw-shot {
  position: relative; display: block; width: 120px; height: 90px;
  border: 1px solid var(--c-border); border-radius: var(--radius-sm);
  overflow: hidden; background: var(--c-bg-subtle);
}
.hw-shot img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .2s ease; }
.hw-shot:hover img { transform: scale(1.05); }
.hw-shot-del {
  display: inline-flex; align-items: center; gap: 4px; margin-top: 6px;
  font-size: 12px; color: var(--c-text-body); cursor: pointer; user-select: none;
}
.hw-shot-del input { margin: 0; }

@media (max-width: 1080px) {
  .stat-cards { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 860px) {
  .page-hero { padding: 40px 0 32px; }
  .page-hero h1 { font-size: 1.95rem; }
  .px-hero { padding: 42px 0 34px; }
  .px-hero h1 { font-size: 1.95rem; }
  .px-hero::before { font-size: 4rem; }
  .fee-hero { padding: 44px 0 36px; }
  .fee-hero h1 { font-size: 1.95rem; }
  .member-wrap { grid-template-columns: 1fr; gap: 18px; }
  .mem-nav { position: static; }
  .cta-band { padding: 24px 22px; }
}
@media (max-width: 640px) {
  .stat-cards { grid-template-columns: 1fr; }
  .page-hero h1, .fee-hero h1, .px-hero h1 { font-size: 1.7rem; }
}

/* ============================================================
   响应式断点 (RESPONSIVE)
   ============================================================ */
@media (max-width: 1200px) {
  .side-dock { display: none !important; }
}
@media (max-width: 1080px) {
  .g4 { grid-template-columns: repeat(2, 1fr); }
  .grid-team-main { grid-template-columns: repeat(2, 1fr); }
  .grid-files { grid-template-columns: repeat(2, 1fr); }
  .grid-armory { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(3, 1fr); }
  .chu-pricing-grid-onepage, .fee-grid { grid-template-columns: repeat(2, 1fr); }
  .grid-versions { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
}
@media (max-width: 860px) {
  .top-auth-right { display: none; }
  .top-auth-row { justify-content: center; }
  .top-auth-left { justify-content: center; }
  .hero-auth-row { flex-direction: column; align-items: flex-start; gap: 8px; }
  .main-nav { display: none; }
  .nav-burger { display: block; margin-left: auto; }
  .nav-account { margin-left: 0; }
  .site-header.open .main-nav {
    display: flex; position: absolute; top: 62px; left: 0; right: 0; background: var(--c-black);
    flex-direction: column; padding: 12px 24px 20px; gap: 0; border-bottom: 2px solid var(--c-red);
  }
  .site-header.open .main-nav .nav-link { padding: 12px 6px; border-bottom: 1px solid #27272a; width: 100%; }
  
  .hero { padding: 44px 0 36px; }
  .hero-grid { grid-template-columns: 1fr; gap: 32px; }
  .hero h1 { font-size: 2.1rem; }
  .hero::before { font-size: 4rem; }
  .top-spotlight-container { grid-template-columns: 1fr; }
  .mirs-banner-strip { flex-direction: column; align-items: flex-start; }
  .assure-panel .assure-grid,
  .assure-panel .assure-split-grid { grid-template-columns: 1fr; }
  .assure-group--left { border-right: none; border-bottom: 2px solid var(--c-border-strong); }
  .assure-panel .assure-card { border-right: 1px solid var(--c-border); border-bottom: 1px solid var(--c-border); }
  .assure-panel .assure-card:nth-child(2n) { border-right: none; }
  .assure-panel .assure-card:nth-child(n+7) { border-bottom: none; }
  .assure-band { grid-template-columns: repeat(2, 1fr); }
  .assure-item:nth-child(2) { border-right: none; }
  .chu-promise-wrap { grid-template-columns: repeat(2, 1fr); }
  .g2, .g3 { grid-template-columns: 1fr; }
  .grid-team-assistant { grid-template-columns: 1fr; }
  .grid-custom { grid-template-columns: 1fr; }
  .sph-highlight-card { grid-template-columns: 1fr; gap: 20px; padding: 20px; }
  .sph-card-visual { aspect-ratio: 16 / 9; }
}
@media (max-width: 640px) {
  .container { padding: 0 16px; }
  .hero h1 { font-size: 1.85rem; }
  .steps-grid { grid-template-columns: 1fr; }
  .chu-pricing-grid-onepage, .fee-grid { grid-template-columns: 1fr; }
  .assure-panel .assure-head { flex-direction: column; align-items: flex-start; gap: 10px; padding: 14px 16px; }
  .assure-panel .assure-grid,
  .assure-panel .assure-split-grid,
  .assure-panel .assure-group { grid-template-columns: 1fr; }
  .assure-panel .assure-group--left { border-right: none; border-bottom: 2px solid var(--c-border-strong); }
  .assure-panel .assure-card { border-right: none !important; border-bottom: 1px solid var(--c-border); padding: 18px 16px; }
  .assure-panel .assure-card:last-child { border-bottom: none; }
  .assure-band { grid-template-columns: 1fr; }
  .assure-item { border-right: none; border-bottom: 1px solid var(--c-border); }
  .assure-item:last-child { border-bottom: none; }
  .hero-facts { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .top-auth-badge { font-size: 10px; padding: 2px 5px; gap: 4px; }
  .hero-auth-badges { padding: 4px 8px; gap: 5px; }
  .hero-auth-badge { font-size: 11px; }
  .hero-auth-mid { margin: 0 1px; }
  .grid-team-main { grid-template-columns: 1fr; }
  .grid-files { grid-template-columns: 1fr; }
  .grid-armory { grid-template-columns: 1fr; }
  .chu-promise-wrap { grid-template-columns: 1fr; }
  .sph-highlight-card { padding: 16px 14px; }
  .sph-card-title { font-size: 1.08rem; }
  .sph-card-btns { flex-direction: column; }
  .btn-sph-main, .btn-sph-sub { width: 100%; justify-content: center; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .f-bottom-row { flex-direction: column; }
  .floating-kefu { right: 16px; bottom: 70px; }
  .kefu-toggle { width: 48px; height: 48px; }
}

/* ============================================================
   全站切屏转场与开屏动效系统 (CYBER TRANSITION SYSTEM)
   1. 站内切屏特效：超轻量激光顶部进度束 + 视口微淡入淡出 (fail-open)
   2. 开屏动画：黑曜石工业风 · 先慢后快蓄力冲刺 · 赛博准星与 HUD
   3. 开屏切屏入场：激光横斩双叶幕帘展开 + 首页层级平滑揭幕
   ============================================================ */

/* 1. 站内切屏特效 (Page Transition) */
.c2-page-curtain {
  position: fixed;
  inset: 0;
  z-index: 99998;
  pointer-events: none;
  opacity: 0;
  background: rgba(9, 9, 11, 0.28);
  backdrop-filter: blur(0px);
  -webkit-backdrop-filter: blur(0px);
  transition: opacity 160ms cubic-bezier(0.4, 0, 0.2, 1), backdrop-filter 160ms;
}

.c2-page-beam {
  position: absolute;
  top: 0;
  left: 0;
  height: 2.5px;
  width: 0%;
  background: linear-gradient(90deg, transparent 0%, var(--c-red-dark) 20%, var(--c-red) 70%, #fff 100%);
  box-shadow: 0 0 12px var(--c-red-glow), 0 0 3px #fff;
  transition: width 180ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

body.c2-transitioning .c2-page-curtain {
  opacity: 1;
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  pointer-events: auto;
}

body.c2-transitioning .c2-page-beam {
  width: 100%;
}

/* 2. 开屏容器基础设定 (默认隐藏，JS 激活 c2-splash-on 才显现) */
.c2-splash { display: none; }

.c2-splash-on .c2-splash {
  position: fixed;
  inset: 0;
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background:
    radial-gradient(110% 80% at 50% 36%, rgba(220, 38, 38, 0.22), transparent 58%),
    radial-gradient(80% 60% at 50% 110%, rgba(220, 38, 38, 0.15), transparent 55%),
    #09090b;
  animation: c2SplashOut 380ms cubic-bezier(0.7, 0, 0.84, 0) 1800ms forwards;
}

.c2-splash-on .c2-splash::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 36px 36px;
  -webkit-mask-image: radial-gradient(72% 58% at 50% 44%, #000 32%, transparent 84%);
  mask-image: radial-gradient(72% 58% at 50% 44%, #000 32%, transparent 84%);
  opacity: 0;
  animation: c2SplashFade 320ms ease-out 80ms forwards;
}

/* 四角 HUD 状态信息 */
.c2-splash__hud {
  position: absolute;
  inset: 24px;
  pointer-events: none;
  display: flex;
  justify-content: space-between;
  opacity: 0;
  animation: c2SplashFade 460ms ease-out 200ms forwards;
}

.c2-splash__hud-item {
  position: absolute;
  font-family: var(--f-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 2px;
  color: rgba(255, 255, 255, 0.32);
  text-transform: uppercase;
}

.c2-splash__hud-tl { top: 0; left: 0; }
.c2-splash__hud-tr { top: 0; right: 0; }
.c2-splash__hud-bl { bottom: 0; left: 0; }
.c2-splash__hud-br { bottom: 0; right: 0; color: #10b981; font-weight: 800; text-shadow: 0 0 6px rgba(16, 185, 129, 0.4); }

/* 中心主体 */
.c2-splash__inner {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 22px;
  width: 100%;
  max-width: 330px;
  padding: 0 24px;
  text-align: center;
}

/* 中心徽标与高光 */
.c2-splash__mark {
  position: relative;
  display: grid;
  place-items: center;
  width: 86px;
  height: 86px;
  border-radius: 22px;
  background: linear-gradient(158deg, #232329, #101013);
  border: 1px solid rgba(220, 38, 38, 0.45);
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.6), 0 24px 50px rgba(0, 0, 0, 0.65), 0 0 40px rgba(220, 38, 38, 0.32);
  opacity: 0;
  transform: scale(0.72);
  animation: c2SplashMark 560ms cubic-bezier(0.16, 1, 0.3, 1) 80ms forwards;
}

.c2-splash__glow {
  position: absolute;
  inset: -20px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(220, 38, 38, 0.38) 0%, transparent 68%);
  pointer-events: none;
  filter: blur(10px);
  opacity: 0.6;
  animation: c2SplashPulse 2.4s ease-in-out infinite;
}

.c2-splash__ring {
  position: absolute;
  inset: -2px;
  border-radius: 23px;
  border: 1.5px solid rgba(239, 68, 68, 0.85);
  opacity: 0;
  pointer-events: none;
  animation: c2SplashRing 1150ms cubic-bezier(0.16, 1, 0.3, 1) 200ms;
}

.c2-splash__ring--outer {
  inset: -14px;
  border-radius: 32px;
  border: 1px dashed rgba(239, 68, 68, 0.35);
  opacity: 0;
  animation: c2SplashFade 400ms ease-out 260ms forwards, c2SplashRotate 18s linear infinite;
}

/* 准星十字角标 */
.c2-splash__cross {
  position: absolute;
  font-family: var(--f-mono);
  font-size: 11px;
  line-height: 1;
  color: rgba(239, 68, 68, 0.6);
  pointer-events: none;
  opacity: 0;
  animation: c2SplashFade 300ms ease-out 300ms forwards;
}
.c2-splash__cross--tl { top: -8px; left: -8px; }
.c2-splash__cross--tr { top: -8px; right: -8px; }
.c2-splash__cross--bl { bottom: -8px; left: -8px; }
.c2-splash__cross--br { bottom: -8px; right: -8px; }

.c2-splash__mono {
  position: relative;
  z-index: 1;
  font-family: var(--f-mono);
  font-size: 20px;
  font-weight: 900;
  letter-spacing: 0.5px;
  white-space: nowrap;
  color: #fff;
  text-shadow: 0 0 18px rgba(220, 38, 38, 0.8);
  opacity: 0;
  animation: c2SplashFade 420ms ease-out 240ms forwards;
}

.c2-splash__word {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--f-mono);
  font-size: 22px;
  font-weight: 900;
  letter-spacing: 4px;
  color: #fff;
  opacity: 0;
  transform: translateY(10px);
  animation: c2SplashRise 480ms cubic-bezier(0.25, 1, 0.5, 1) 320ms forwards;
}

.c2-splash__word span {
  padding: 2px 7px;
  border-radius: 2px;
  background: var(--c-red);
  color: #fff;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 1.5px;
}

.c2-splash__tag {
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: 3px;
  color: rgba(255, 255, 255, 0.42);
  opacity: 0;
  transform: translateY(10px);
  animation: c2SplashRise 420ms cubic-bezier(0.25, 1, 0.5, 1) 450ms forwards;
}

/* 先慢后快进度条与数显仪表 */
.c2-splash__meter {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
  max-width: 220px;
  opacity: 0;
  animation: c2SplashFade 300ms ease-out 320ms forwards;
}

.c2-splash__bar {
  position: relative;
  width: 100%;
  height: 2.5px;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.1);
  overflow: hidden;
}

.c2-splash__bar i {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: left center;
  background: linear-gradient(90deg, var(--c-red-dark), var(--c-red), var(--c-red-glow), #fff);
  box-shadow: 0 0 12px var(--c-red-glow), 0 0 4px #fff;
  animation: c2SplashBar 1320ms cubic-bezier(0.76, 0, 0.94, 0.3) 320ms forwards;
}

.c2-splash__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--f-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: rgba(255, 255, 255, 0.45);
}

.c2-splash__step {
  color: rgba(255, 255, 255, 0.65);
}

.c2-splash__num {
  color: #ffffff;
  font-weight: 800;
  transition: color 0.2s ease, text-shadow 0.2s ease;
}

/* 3. 开屏双叶幕帘与激光横斩 (切屏出场特效) */
.c2-splash__curtain {
  position: absolute;
  left: 0;
  width: 100%;
  height: 50%;
  background: #09090b;
  z-index: 1;
  pointer-events: none;
  opacity: 0;
  transform: translateY(0);
}
.c2-splash__curtain--t { top: 0; }
.c2-splash__curtain--b { bottom: 0; }

.c2-splash__laser {
  position: absolute;
  top: 50%;
  left: 0;
  width: 100%;
  height: 2px;
  transform: translateY(-50%) scaleX(0);
  background: linear-gradient(90deg, transparent, var(--c-red-dark), var(--c-red), #fff, var(--c-red), var(--c-red-dark), transparent);
  box-shadow: 0 0 16px var(--c-red-glow), 0 0 4px #fff;
  z-index: 3;
  pointer-events: none;
  opacity: 0;
}

/* 4. PC 端开屏：更大版面 + 深度「先慢后快」激光切屏 */
.c2-splash-pc.c2-splash-on .c2-splash {
  animation: c2SplashOutPc 580ms cubic-bezier(0.72, 0, 0.9, 0.32) 2800ms forwards;
}

.c2-splash-pc.c2-splash-on .c2-splash::before {
  background-size: 54px 54px;
  animation: c2SplashFade 620ms cubic-bezier(0.55, 0, 0.9, 0.4) 120ms forwards;
}

.c2-splash-pc .c2-splash__inner {
  max-width: 540px;
  gap: 28px;
  padding: 0 40px;
}

.c2-splash-pc .c2-splash__mark {
  width: 120px;
  height: 120px;
  border-radius: 28px;
  animation: c2SplashMarkPc 1100ms cubic-bezier(0.7, 0, 0.94, 0.34) 140ms forwards;
}

.c2-splash-pc .c2-splash__ring {
  border-radius: 29px;
  animation: c2SplashRing 1600ms cubic-bezier(0.55, 0, 0.9, 0.4) 520ms;
}

.c2-splash-pc .c2-splash__ring--outer {
  inset: -18px;
  border-radius: 40px;
}

.c2-splash-pc .c2-splash__mono {
  font-size: 28px;
  animation: c2SplashFade 540ms cubic-bezier(0.6, 0, 0.9, 0.4) 580ms forwards;
}

.c2-splash-pc .c2-splash__word {
  font-size: 32px;
  letter-spacing: 9px;
  animation: c2SplashRise 780ms cubic-bezier(0.7, 0, 0.9, 0.3) 700ms forwards;
}

.c2-splash-pc .c2-splash__word span {
  font-size: 13px;
  padding: 3px 10px;
  letter-spacing: 2px;
}

.c2-splash-pc .c2-splash__tag {
  font-size: 12px;
  letter-spacing: 7px;
  animation: c2SplashRise 660ms cubic-bezier(0.7, 0, 0.9, 0.3) 920ms forwards;
}

.c2-splash-pc .c2-splash__meter {
  max-width: 360px;
  gap: 10px;
}

.c2-splash-pc .c2-splash__bar {
  height: 3.5px;
}

.c2-splash-pc .c2-splash__bar i {
  animation: c2SplashBar 2100ms cubic-bezier(0.82, 0, 0.98, 0.25) 450ms forwards;
}

.c2-splash-pc .c2-splash__meta {
  font-size: 11.5px;
  letter-spacing: 2px;
}

.c2-splash-pc .c2-splash__hud-item {
  font-size: 11.5px;
  letter-spacing: 2.5px;
}

/* PC 端切屏：退出时激光横扫触发 */
.c2-splash-pc.c2-splash-on .c2-splash__laser {
  animation: c2SplashLaser 580ms cubic-bezier(0.2, 0.8, 0.2, 1) 2760ms forwards;
}

/* 5. 首页切入揭幕特效 (开屏结束瞬间，首屏平滑破茧而入) */
.c2-splash-on .top-auth-strip,
.c2-splash-on .site-header,
.c2-splash-on .home-notice,
.c2-splash-on .hero {
  opacity: 0.15;
  transform: translateY(12px) scale(0.99);
  filter: blur(4px);
  pointer-events: none;
}

body.c2-site-revealed .top-auth-strip,
body.c2-site-revealed .site-header,
body.c2-site-revealed .home-notice,
body.c2-site-revealed .hero {
  opacity: 1;
  transform: translateY(0) scale(1);
  filter: blur(0);
  transition:
    opacity 650ms cubic-bezier(0.16, 1, 0.3, 1),
    transform 650ms cubic-bezier(0.16, 1, 0.3, 1),
    filter 520ms ease-out;
}

body.c2-splash-lock { overflow: hidden; }

/* 关键帧定义 */
@keyframes c2SplashFade { from { opacity: 0; } to { opacity: 1; } }
@keyframes c2SplashMark { from { opacity: 0; transform: scale(0.72); } to { opacity: 1; transform: scale(1); } }
@keyframes c2SplashRise { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
@keyframes c2SplashBar { from { transform: scaleX(0); } to { transform: scaleX(1); } }
@keyframes c2SplashRotate { 100% { transform: rotate(360deg); } }
@keyframes c2SplashPulse {
  0%, 100% { transform: scale(1); opacity: 0.55; }
  50% { transform: scale(1.16); opacity: 0.88; }
}
@keyframes c2SplashRing {
  0% { opacity: 0; transform: scale(0.92); }
  22% { opacity: 0.95; }
  100% { opacity: 0; transform: scale(1.85); }
}
@keyframes c2SplashOut {
  0% { opacity: 1; transform: scale(1); }
  100% { opacity: 0; transform: scale(1.05); visibility: hidden; }
}
@keyframes c2SplashMarkPc {
  0% { opacity: 0; transform: scale(0.58); }
  45% { opacity: 0.94; transform: scale(0.68); }
  100% { opacity: 1; transform: scale(1); }
}
@keyframes c2SplashLaser {
  0% { opacity: 0; transform: translateY(-50%) scaleX(0); }
  35% { opacity: 1; transform: translateY(-50%) scaleX(1); }
  75% { opacity: 0.9; transform: translateY(-50%) scaleX(1.1) scaleY(2.5); }
  100% { opacity: 0; transform: translateY(-50%) scaleX(1.3) scaleY(0); }
}
@keyframes c2SplashOutPc {
  0% { opacity: 1; transform: scale(1); -webkit-filter: blur(0); filter: blur(0); }
  30% { opacity: 1; transform: scale(1.01); -webkit-filter: blur(1px); filter: blur(1px); }
  100% { opacity: 0; transform: scale(1.08); -webkit-filter: blur(10px); filter: blur(10px); visibility: hidden; }
}

/* ============================================================
   全局微交互细节与无障碍优化
   ============================================================ */
/* 列表条目悬停轻微右移 */
.hover-shift-x { transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1); }
.hover-shift-x:hover { transform: translateX(4px); }

/* 页面平滑加载微淡入 */
.page-fade-in {
  animation: pageFadeIn 0.35s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
@keyframes pageFadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 页面核心组件入场轻快浮现动效 (Cascade Reveal) */
.hero, .zone-header, .sec-head, .fee-hero, .path-hero {
  animation: c2RiseUp 0.45s cubic-bezier(0.16, 1, 0.3, 1) both;
}
.card, .fee-card, .team-card-v2, .step-card, .reception-card, .hub-card, .assure-card {
  animation: c2CardPop 0.5s cubic-bezier(0.16, 1, 0.3, 1) both;
}
@keyframes c2RiseUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes c2CardPop {
  from { opacity: 0; transform: translateY(14px) scale(0.985); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

/* 无障碍：若用户在系统级开启了减弱动态效果，关闭一切常驻高频动画 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}


@media (prefers-reduced-motion: reduce) {
  .c2-splash-on .c2-splash { display: none; }
  .c2-page-curtain { display: none; }
}

/* ============================================================
   学习路径全新高奢黑金设计系统 (PATHWAYS CYBER INDUSTRIAL SYSTEM)
   对齐收费标准高质感 · 官方 996(龙标) + 360(盾牌标) 双认证 · 艺术字与光效
   ============================================================ */

/* 1. 官方双轨权威认证标识 (996 龙神标 + 360 科技护盾标) */
.path-auth-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  padding: 5px 16px;
  font-family: var(--f-mono);
  font-size: 12px;
  color: #e4e4e7;
  flex-wrap: wrap;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.35);
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}
.path-auth-badge:hover {
  border-color: rgba(220, 38, 38, 0.4);
  box-shadow: 0 4px 16px rgba(220, 38, 38, 0.18);
}
.pab-item {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  transition: transform 0.2s ease;
}
.pab-item:hover {
  transform: translateY(-1px);
}
.pab-item.pab-996 {
  color: #fca5a5;
}
.pab-item.pab-360 {
  color: #6ee7b7;
}
.pab-brand {
  font-family: var(--f-mono);
  font-weight: 900;
  letter-spacing: 0.5px;
}
.pab-icon {
  flex: none;
  transition: transform 0.25s ease, filter 0.25s ease;
}
.pab-icon--dragon {
  color: #ef4444;
  filter: drop-shadow(0 0 5px rgba(239, 68, 68, 0.65));
  animation: dragonBreathe 3.6s ease-in-out infinite;
}
.pab-item.pab-996:hover .pab-icon--dragon {
  transform: scale(1.15) rotate(-3deg);
  filter: drop-shadow(0 0 8px rgba(239, 68, 68, 0.95));
}
.pab-icon--shield {
  color: #10b981;
  filter: drop-shadow(0 0 5px rgba(16, 185, 129, 0.65));
  animation: shieldPulse 4s ease-in-out infinite;
}
.pab-item.pab-360:hover .pab-icon--shield {
  transform: scale(1.15);
  filter: drop-shadow(0 0 8px rgba(16, 185, 129, 0.95));
}
.pab-sep {
  color: rgba(255, 255, 255, 0.25);
  font-weight: 300;
}
.pab-link {
  color: #fbbf24;
  text-decoration: none;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 3px;
  transition: color 0.15s ease, transform 0.15s ease;
}
.pab-link:hover {
  color: #fef08a;
  transform: translateX(2px);
  text-decoration: none;
}

@keyframes dragonBreathe {
  0%, 100% { filter: drop-shadow(0 0 4px rgba(239, 68, 68, 0.5)); }
  50% { filter: drop-shadow(0 0 8px rgba(239, 68, 68, 0.85)); }
}
@keyframes shieldPulse {
  0%, 100% { filter: drop-shadow(0 0 4px rgba(16, 185, 129, 0.5)); }
  50% { filter: drop-shadow(0 0 8px rgba(16, 185, 129, 0.85)); }
}

/* 2. 学习路径全景 Hero 通用样式 */
.path-hero {
  background: #09090b;
  position: relative;
  overflow: hidden;
  border-bottom: 2px solid var(--c-red);
  padding: 50px 0 44px;
}
.path-hero::before {
  content: attr(data-watermark);
  position: absolute;
  right: -20px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--f-mono);
  font-weight: 900;
  font-size: 6.5rem;
  color: rgba(255, 255, 255, 0.025);
  pointer-events: none;
  user-select: none;
  white-space: nowrap;
}
.path-hero-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px 18px;
  margin-bottom: 20px;
}
.path-title {
  color: #ffffff;
  font-family: var(--f-serif);
  font-size: 2.35rem;
  font-weight: 900;
  line-height: 1.25;
  margin: 0 0 12px;
  letter-spacing: -0.5px;
}
.path-subtitle {
  color: #a1a1aa;
  font-size: 15px;
  line-height: 1.8;
  max-width: 840px;
  margin: 0 0 18px;
}
.path-hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 28px;
  border-top: 1px dashed rgba(255, 255, 255, 0.12);
  padding-top: 16px;
  margin-top: 16px;
}
.phs-item {
  display: flex;
  align-items: baseline;
  gap: 6px;
  font-family: var(--f-mono);
}
.phs-num {
  font-size: 22px;
  font-weight: 900;
  color: #fff;
  letter-spacing: -0.5px;
}
.phs-num.red { color: var(--c-red-glow); }
.phs-num.gold { color: #fbbf24; }
.phs-num.blue { color: #38bdf8; }
.phs-num.green { color: #34d399; }
.phs-label {
  font-size: 12px;
  color: #71717a;
  font-weight: 600;
}

/* 3. 学习路径导航胶囊条 */
.path-switch-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  padding: 12px 0;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--c-border);
  scrollbar-width: none;
}
.path-switch-bar::-webkit-scrollbar { display: none; }
.psb-tab {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 999px;
  background: #ffffff;
  border: 1px solid var(--c-border);
  color: var(--c-text-body);
  font-size: 13.5px;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
  transition: all 0.2s ease;
}
.psb-tab:hover {
  border-color: var(--c-red);
  color: var(--c-red);
  transform: translateY(-1px);
}
.psb-tab.active {
  background: #09090b;
  border-color: #09090b;
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.18);
}
.psb-tab.active .psb-no {
  color: var(--c-red-glow);
}
.psb-no {
  font-family: var(--f-mono);
  font-size: 11px;
  color: var(--c-text-muted);
}

/* 4. 零基础 5 步走通 · 彻底移除左侧翻页指示列，升级全宽卡片式交互 */
.zero-steps-grid {
  display: flex;
  flex-direction: column;
  gap: 20px;
  position: relative;
}
.step-card {
  background: #ffffff;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 24px 26px;
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}
.step-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--c-red);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.22s ease;
}
.step-card:hover {
  transform: translateY(-3px);
  border-color: rgba(220, 38, 38, 0.35);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.08);
}
.step-card:hover::before {
  transform: scaleY(1);
}
.step-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 12px;
}
.step-badge-group {
  display: flex;
  align-items: center;
  gap: 8px;
}
.step-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: var(--f-mono);
  font-size: 11.5px;
  font-weight: 900;
  color: #ffffff;
  background: #09090b;
  padding: 3px 10px;
  border-radius: 4px;
  letter-spacing: 0.5px;
  border-left: 3px solid var(--c-red);
}
.step-title {
  font-size: 1.25rem;
  font-weight: 900;
  color: var(--c-black);
  margin: 0 0 10px;
}
.step-goal {
  font-size: 14px;
  color: var(--c-text-body);
  line-height: 1.65;
  margin: 0 0 16px;
  padding: 10px 14px;
  background: var(--c-bg-subtle);
  border-left: 3px solid #cbd5e1;
  border-radius: 0 6px 6px 0;
}
.step-resources {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  background: #f8fafc;
  border: 1px solid var(--c-border);
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 16px;
}
.sr-item {
  display: flex;
  flex-direction: column;
  gap: 3px;
  font-size: 13px;
}
.sr-label {
  color: var(--c-text-muted);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  font-family: var(--f-mono);
}
.sr-val {
  color: var(--c-black);
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.step-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  border-top: 1px dashed var(--c-border);
  padding-top: 14px;
}
.step-test-info {
  font-size: 13px;
  color: var(--c-text-muted);
}
.step-actions {
  display: flex;
  gap: 10px;
  align-items: center;
}

@media (max-width: 768px) {
  .step-resources {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 520px) {
  .step-resources {
    grid-template-columns: 1fr;
  }
  .step-card-footer {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* 已申请课程标记 */
.applied-chip {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-family: var(--f-mono);
  font-size: 11px;
  font-weight: 800;
  line-height: 1;
  color: var(--c-ok);
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: var(--radius-sm);
  padding: 3px 7px;
  white-space: nowrap;
}
.applied-chip[hidden] {
  display: none;
}
.is-applied .slc-play-btn,
.is-applied .rc-actions .btn {
  opacity: 0.72;
}
.lesson-row.is-applied {
  background: rgba(16, 185, 129, 0.04);
}
.lesson-row.is-applied .lr-arrow {
  color: var(--c-ok);
}
@media (max-width: 768px) {
  .applied-chip {
    font-size: 10px;
    padding: 2px 6px;
  }
}