/* ============================================================
   【公司名称】品牌官网 — 共享样式表
   主题：紫金科技风 | 深紫底 + 金色发光 + 玻璃拟态 + 科技网格
   替换说明：全局配色改 :root 变量即可
   ============================================================ */

:root {
  /* 主色 · 深紫系（兼容旧变量名，映射到紫金新色） */
  --navy-900: #08010f;   /* 最深背景 */
  --navy-800: #130227;   /* 深紫 · 面板/页脚/导航 */
  --navy-700: #1e0840;   /* 紫中调 */
  --navy-600: #331366;   /* 亮紫 */
  --navy-100: #1e0a3e;   /* 浅紫面板（占位图背景） */
  --navy-50:  #150630;   /* 更浅紫面板（FAQ 区背景） */
  /* 点缀 · 金色 */
  --gold-600: #c9a24b;   /* 深金 · 小标题 */
  --gold-500: #d4af37;   /* 主金 */
  --gold-400: #eccf6b;   /* 亮金 */
  --gold-300: #f7e29a;   /* 最亮金 */
  --gold-100: rgba(212, 175, 55, .14); /* 金色标签底 */
  /* 中性色（深色主题） */
  --text:    #ede8ff;    /* 主文字 */
  --text-2:  #b7acd8;    /* 次级文字 */
  --text-3:  #8479ab;    /* 弱化文字 */
  --line:    rgba(255, 255, 255, .09);
  --white:   #18092f;    /* 卡片底色（深紫玻璃） */
  /* 紫色亮色（新组件用） */
  --purple-500: #6d3df0;
  --purple-400: #8b5cf6;
  --purple-300: #a88bff;
  /* 效果 */
  --shadow-sm: 0 4px 20px rgba(10, 2, 26, .5);
  --shadow-md: 0 16px 44px rgba(10, 2, 26, .6);
  --glow-gold: 0 0 26px rgba(212, 175, 55, .35);
  --glow-purple: 0 0 30px rgba(139, 92, 246, .35);
  --radius: 16px;
  --container: 1140px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }
/* 锚点定位避开固定导航 */
section[id] { scroll-margin-top: 88px; }

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  /* 深紫渐变底 + 星空粒子 */
  background:
    radial-gradient(1.2px 1.2px at 12% 18%, rgba(255,255,255,.7), transparent 60%),
    radial-gradient(1.5px 1.5px at 28% 64%, rgba(255,255,255,.5), transparent 60%),
    radial-gradient(1px 1px at 44% 32%, rgba(236,207,107,.8), transparent 60%),
    radial-gradient(1.3px 1.3px at 62% 78%, rgba(255,255,255,.55), transparent 60%),
    radial-gradient(1px 1px at 76% 22%, rgba(236,207,107,.7), transparent 60%),
    radial-gradient(1.4px 1.4px at 88% 52%, rgba(255,255,255,.5), transparent 60%),
    radial-gradient(1000px 600px at 85% -10%, rgba(109,61,240,.18), transparent 60%),
    radial-gradient(900px 500px at 8% 110%, rgba(212,175,55,.08), transparent 60%),
    linear-gradient(180deg, #0a0118 0%, #0c031f 45%, #0d0322 100%);
  background-attachment: fixed;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

::selection { background: rgba(212,175,55,.35); color: #fff; }

/* ---------- 通用标题 ---------- */
.section { padding: 84px 0; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 52px; }
.section-head .eyebrow {
  display: inline-block;
  font-size: 13px; letter-spacing: 4px;
  color: var(--gold-400);
  text-transform: uppercase;
  margin-bottom: 12px;
  text-shadow: 0 0 14px rgba(212,175,55,.45);
}
.section-head h2 {
  font-size: 34px; font-weight: 800; line-height: 1.3; letter-spacing: 1px;
  background: linear-gradient(120deg, #ffffff 0%, #d9c9ff 50%, var(--gold-300) 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.section-head p { margin-top: 14px; color: var(--text-2); font-size: 16px; }
.section-head p.section-sub { margin-top: 8px; font-size: 14px; color: rgba(237,232,255,.62); max-width: 740px; margin-left: auto; margin-right: auto; }
.rule-gold {
  width: 56px; height: 3px; margin: 18px auto 0; border-radius: 2px;
  background: linear-gradient(90deg, var(--gold-600), var(--gold-300), var(--gold-600));
  box-shadow: 0 0 12px rgba(212,175,55,.5);
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 30px; border-radius: 999px;
  font-size: 15px; font-weight: 600; letter-spacing: 1px;
  transition: all .25s ease; cursor: pointer; border: 1px solid transparent;
  white-space: nowrap;
}
.btn-gold {
  background: linear-gradient(135deg, var(--gold-400), var(--gold-600));
  color: #1a0b00;
  box-shadow: 0 6px 22px rgba(212,175,55,.4), inset 0 1px 0 rgba(255,255,255,.45);
}
.btn-gold:hover { transform: translateY(-2px); box-shadow: 0 10px 30px rgba(212,175,55,.55), inset 0 1px 0 rgba(255,255,255,.45); }
.btn-outline { border-color: rgba(212,175,55,.55); color: var(--gold-300); box-shadow: 0 0 16px rgba(212,175,55,.12) inset; }
.btn-outline:hover { background: rgba(212,175,55,.1); box-shadow: 0 0 22px rgba(212,175,55,.35); transform: translateY(-2px); }
.btn-navy {
  background: linear-gradient(135deg, var(--purple-500), var(--purple-400));
  color: #fff; box-shadow: 0 6px 20px rgba(109,61,240,.4);
}
.btn-navy:hover { transform: translateY(-2px); box-shadow: 0 10px 28px rgba(109,61,240,.55); }
.btn-sm { padding: 9px 22px; font-size: 14px; }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(13, 3, 32, .78);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(212,175,55,.22);
  box-shadow: 0 6px 30px rgba(0,0,0,.35);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo { display: flex; align-items: center; gap: 10px; }
.logo-mark {
  width: 38px; height: 38px; border-radius: 9px;
  background: linear-gradient(135deg, var(--purple-500), #1e0840);
  border: 1px solid rgba(212,175,55,.5);
  color: var(--gold-300); display: flex; align-items: center; justify-content: center;
  font-size: 17px; font-weight: 800; letter-spacing: 0;
  box-shadow: 0 0 14px rgba(212,175,55,.3);
}
.logo-text { font-size: 19px; font-weight: 700; color: #f4efff; letter-spacing: 1px; }
.logo-text small { display: block; font-size: 10px; color: var(--gold-400); letter-spacing: 3px; font-weight: 600; }

.main-nav { display: flex; gap: 34px; }
.main-nav a {
  font-size: 15px; color: var(--text-2); font-weight: 500;
  position: relative; padding: 6px 0; transition: color .2s;
}
.main-nav a::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 0; height: 2px; border-radius: 2px;
  background: linear-gradient(90deg, var(--gold-500), var(--gold-300));
  box-shadow: 0 0 8px rgba(212,175,55,.8);
  transition: width .25s;
}
.main-nav a:hover, .main-nav a.active { color: var(--gold-300); }
.main-nav a:hover::after, .main-nav a.active::after { width: 100%; }

.header-cta { padding: 10px 24px; font-size: 14px; }
.nav-toggle {
  display: none; background: none; border: none; cursor: pointer;
  font-size: 24px; color: var(--text); padding: 6px;
}

/* ---------- Hero（首页大图区） ---------- */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(1100px 560px at 82% -12%, rgba(109,61,240,.5), transparent 62%),
    radial-gradient(820px 480px at 6% 112%, rgba(212,175,55,.2), transparent 60%),
    radial-gradient(500px 300px at 60% 120%, rgba(139,92,246,.35), transparent 65%),
    linear-gradient(160deg, #0a0118 0%, #160530 52%, #2a0f63 100%);
  color: #fff;
  min-height: 82vh;
  display: flex; align-items: center;
}
/* 科技网格线 */
.hero::before {
  content: ""; position: absolute; inset: 0; opacity: .14;
  background-image:
    linear-gradient(rgba(168,139,255,.5) 1px, transparent 1px),
    linear-gradient(90deg, rgba(168,139,255,.5) 1px, transparent 1px);
  background-size: 52px 52px;
  -webkit-mask-image: radial-gradient(ellipse at 50% 40%, #000 30%, transparent 75%);
  mask-image: radial-gradient(ellipse at 50% 40%, #000 30%, transparent 75%);
}
/* 底部金色光带 */
.hero::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold-400), transparent);
  opacity: .7;
}
.hero-inner { position: relative; z-index: 2; max-width: 780px; padding: 90px 24px; }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 12px;
  font-size: 13px; letter-spacing: 5px; color: var(--gold-300);
  margin-bottom: 22px;
  text-shadow: 0 0 16px rgba(212,175,55,.5);
}
.hero-eyebrow::before { content: ""; width: 34px; height: 1px; background: linear-gradient(90deg, transparent, var(--gold-500)); box-shadow: 0 0 8px rgba(212,175,55,.8); }
.hero-title {
  font-size: 52px; line-height: 1.25; font-weight: 800; letter-spacing: 2px;
  background: linear-gradient(120deg, #ffffff 0%, #d9c9ff 45%, var(--gold-300) 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
  filter: drop-shadow(0 4px 26px rgba(139,92,246,.35));
}
.hero-title .text-gold {
  color: var(--gold-300);
  -webkit-text-fill-color: var(--gold-300);
  filter: drop-shadow(0 0 22px rgba(212,175,55,.6));
}
.hero-sub { margin-top: 22px; font-size: 17px; color: rgba(237,232,255,.82); max-width: 620px; }
.hero-actions { margin-top: 38px; display: flex; gap: 16px; flex-wrap: wrap; }
.hero-note { margin-top: 26px; font-size: 13px; color: rgba(237,232,255,.45); letter-spacing: 1px; }

/* 图片占位通用块 */
.img-placeholder {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  background:
    radial-gradient(300px 200px at 30% 20%, rgba(139,92,246,.14), transparent 60%),
    linear-gradient(160deg, var(--navy-100), #150630);
  color: var(--text-3);
  border: 2px dashed rgba(168,139,255,.45);
  font-size: 14px; letter-spacing: 1px;
  border-radius: var(--radius);
  min-height: 120px;
}
.img-placeholder::before { content: "🖼"; font-size: 20px; }

/* ---------- 卡片栅格 ---------- */
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
/* 全宽卡片（私教课程 / 课程合集）：左右图文布局，横跨整行 */
.card-wide {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 0;
}
.card-wide .card-media { height: 100%; min-height: 260px; }
.card-wide .card-body { padding: 34px 32px; }
.card-wide .card-body h3 { font-size: 23px; }
.card-wide.vip-card { border-color: rgba(212,175,55,.45); }
.card-wide.vip-card::after {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, transparent, var(--gold-400), transparent);
  opacity: .9;
}
/* 课程概览卡 · 横版封面横幅：上图下文布局 */
.card-wide.cover-banner { grid-template-columns: 1fr; }
.card-wide.cover-banner .card-media {
  width: 100%; height: auto; min-height: 0; aspect-ratio: 1600/558;
}
.card-wide.cover-banner .card-body { padding: 30px 32px 34px; }
.card {
  position: relative;
  background: linear-gradient(160deg, rgba(30,10,62,.72), rgba(19,3,39,.9));
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(212,175,55,.18);
  border-radius: var(--radius); overflow: hidden;
  transition: transform .25s, box-shadow .25s, border-color .25s;
  display: flex; flex-direction: column;
}
.card::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px;
  background: linear-gradient(135deg, rgba(212,175,55,.45), transparent 40%, transparent 70%, rgba(139,92,246,.5));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity: .6; pointer-events: none; transition: opacity .25s;
}
.card:hover { transform: translateY(-6px); border-color: rgba(212,175,55,.45); box-shadow: 0 18px 50px rgba(10,2,26,.65), 0 0 34px rgba(212,175,55,.16); }
.card:hover::before { opacity: 1; }
.card-media { height: 170px; }
/* 产品页四卡 2x2 布局：媒体区按产品原图比例（1785:881）自适应高度 */
@media (min-width: 993px) { .card-grid.products-grid { grid-template-columns: 1fr 1fr; } }
.products-grid .card-media { height: auto; aspect-ratio: 1785 / 881; }
.card-body { padding: 24px; display: flex; flex-direction: column; flex: 1; }
.card-tag {
  display: inline-block; align-self: flex-start;
  font-size: 12px; letter-spacing: 1px; padding: 4px 12px;
  background: rgba(212,175,55,.1); color: var(--gold-300);
  border: 1px solid rgba(212,175,55,.4);
  border-radius: 999px; margin-bottom: 12px; font-weight: 600;
}
.card-body h3 { font-size: 19px; color: #f2edff; margin-bottom: 10px; font-weight: 700; letter-spacing: .5px; }
.card-body p { font-size: 14px; color: var(--text-2); flex: 1; margin-bottom: 16px; }
.card-foot { display: flex; align-items: center; justify-content: space-between; margin-top: auto; }
.card-price { font-size: 22px; font-weight: 800; color: var(--gold-400); text-shadow: 0 0 14px rgba(212,175,55,.35); }
.card-price small { font-size: 13px; color: var(--text-3); font-weight: 400; margin-left: 4px; }

/* 卡片特色标签（课程/产品 · 介绍为主） */
.card-specs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.card-specs li {
  font-size: 12px; letter-spacing: .5px; padding: 4px 12px;
  border: 1px solid rgba(139,92,246,.45);
  border-radius: 999px;
  color: var(--purple-300); background: rgba(109,61,240,.12);
}
/* 卡片底部「了解更多」链接 */
.card-link {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--gold-400); font-size: 14px; font-weight: 600; margin-top: auto;
  padding-top: 14px; transition: gap .25s, color .25s, text-shadow .25s;
}
.card-link::after { content: "→"; transition: transform .25s; }
.card-link:hover { color: var(--gold-300); gap: 10px; text-shadow: 0 0 12px rgba(212,175,55,.5); }
.card-link:hover::after { transform: translateX(3px); }

/* ---------- 特色条 / 数据区 ---------- */
.stats {
  background: linear-gradient(120deg, #0f0326, #1c0a3d 60%, #12052b);
  border-top: 1px solid rgba(212,175,55,.15);
  border-bottom: 1px solid rgba(212,175,55,.15);
  color: #fff; padding: 60px 0;
  position: relative; overflow: hidden;
}
.stats::before {
  content: ""; position: absolute; inset: 0; opacity: .08;
  background-image: linear-gradient(rgba(168,139,255,.6) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(168,139,255,.6) 1px, transparent 1px);
  background-size: 40px 40px;
}
.stats-grid { position: relative; display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; text-align: center; }
.stat-num {
  font-size: 40px; font-weight: 800; color: var(--gold-300);
  text-shadow: 0 0 26px rgba(212,175,55,.6);
}
.stat-label { margin-top: 8px; font-size: 14px; color: rgba(237,232,255,.72); letter-spacing: 1px; }

/* ---------- 公司介绍（首页） ---------- */
.company-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.company-item {
  margin: 0; border-radius: var(--radius); overflow: hidden;
  border: 1px solid rgba(168,139,255,.22);
  box-shadow: var(--shadow-md);
  background: var(--navy-100);
}
.company-item img {
  display: block; width: 100%; height: auto;
  object-fit: cover;
}
.company-full { grid-column: 1 / -1; }
.company-item:hover { border-color: rgba(212,175,55,.55); box-shadow: 0 10px 34px rgba(109,61,240,.28); }

/* ---------- 双栏区 ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split-media { height: 360px; }
.split-body h2 {
  font-size: 30px; margin-bottom: 18px; line-height: 1.35; font-weight: 800;
  background: linear-gradient(120deg, #fff 0%, #d9c9ff 55%, var(--gold-300) 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.split-body p { color: var(--text-2); margin-bottom: 14px; }
.split-body .rule-gold { margin: 0 0 22px; }

/* ---------- 创始人页 ---------- */
.founder-card {
  display: grid; grid-template-columns: 340px 1fr; gap: 48px; align-items: start;
  background: linear-gradient(160deg, rgba(30,10,62,.72), rgba(19,3,39,.9));
  border: 1px solid rgba(212,175,55,.2); border-radius: var(--radius);
  padding: 40px; box-shadow: var(--shadow-md);
}
.founder-photo { aspect-ratio: 4/5; min-height: 380px; overflow: hidden; border-radius: var(--radius); border: 1px solid rgba(212,175,55,.25); box-shadow: var(--shadow-md); }
.founder-photo img { width: 100%; height: 100%; object-fit: cover; display: block; }

/* 图文双栏 */
.feature-row { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.feature-img { overflow: hidden; border-radius: var(--radius); border: 1px solid rgba(212,175,55,.2); box-shadow: var(--shadow-md); }
.feature-img img { width: 100%; height: 100%; object-fit: cover; object-position: top center; display: block; aspect-ratio: 4/3; }
.feature-text h3 { color: #f2edff; font-size: 22px; margin-bottom: 14px; }
.feature-text p { color: var(--text-2); font-size: 15px; line-height: 1.9; margin-bottom: 12px; }

/* 双图画廊 */
.gallery-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.gallery-item { margin: 0; overflow: hidden; border-radius: var(--radius); border: 1px solid rgba(212,175,55,.2); box-shadow: var(--shadow-md); }
.gallery-item img { width: 100%; display: block; object-fit: cover; aspect-ratio: 4/3; }
.founder-name {
  font-size: 30px; font-weight: 800;
  background: linear-gradient(120deg, #fff, var(--gold-300));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.founder-role { color: var(--gold-400); letter-spacing: 2px; font-size: 14px; margin: 6px 0 18px; font-weight: 600; }
.founder-card h4 {
  color: #f2edff; font-size: 17px; margin: 26px 0 10px;
  display: flex; align-items: center; gap: 8px;
}
.founder-card h4::before { content: ""; width: 14px; height: 3px; background: linear-gradient(90deg, var(--gold-500), var(--gold-300)); border-radius: 2px; box-shadow: 0 0 8px rgba(212,175,55,.7); }
.founder-card p { color: var(--text-2); font-size: 15px; }

/* 时间线 */
.timeline { position: relative; margin: 26px 0 6px; padding-left: 26px; }
.timeline::before { content: ""; position: absolute; left: 6px; top: 6px; bottom: 6px; width: 2px; background: linear-gradient(180deg, var(--gold-500), rgba(139,92,246,.5)); box-shadow: 0 0 6px rgba(212,175,55,.4); }
.timeline li { position: relative; padding: 0 0 20px 8px; }
.timeline li::before {
  content: ""; position: absolute; left: -26px; top: 8px;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--navy-900); border: 3px solid var(--gold-500);
  box-shadow: 0 0 12px rgba(212,175,55,.7);
}
.timeline li strong { display: block; color: #f2edff; font-size: 15px; }
.timeline li span { font-size: 13px; color: var(--text-3); }
.timeline li p { font-size: 14px; margin-top: 4px; }

/* 语录 */
.quote {
  background:
    radial-gradient(600px 300px at 80% 10%, rgba(212,175,55,.16), transparent 60%),
    linear-gradient(135deg, #160530, #2a0f63 60%, #160530);
  color: #fff; padding: 64px 0; text-align: center;
  border-top: 1px solid rgba(212,175,55,.18);
  border-bottom: 1px solid rgba(212,175,55,.18);
}
.quote blockquote {
  max-width: 780px; margin: 0 auto; font-size: 24px; line-height: 1.8; font-weight: 600;
  background: linear-gradient(120deg, #fff, #d9c9ff 60%, var(--gold-300));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.quote blockquote::before { content: "“"; display: block; font-size: 64px; line-height: 1; margin-bottom: 6px; -webkit-text-fill-color: var(--gold-400); color: var(--gold-400); text-shadow: 0 0 24px rgba(212,175,55,.6); }
.quote cite { display: block; margin-top: 20px; font-style: normal; font-size: 14px; color: rgba(237,232,255,.7); letter-spacing: 2px; }

/* ---------- 课程 / 产品页 ---------- */
.entry-head { text-align: center; padding: 72px 0 8px; position: relative; }
.entry-head .eyebrow { color: var(--gold-400); letter-spacing: 5px; font-size: 13px; text-shadow: 0 0 14px rgba(212,175,55,.4); }
.entry-head h1 {
  font-size: 40px; margin-top: 10px; font-weight: 800; letter-spacing: 2px;
  background: linear-gradient(120deg, #ffffff 0%, #d9c9ff 50%, var(--gold-300) 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
  filter: drop-shadow(0 4px 22px rgba(139,92,246,.3));
}
.entry-head p { color: var(--text-2); margin-top: 12px; max-width: 640px; margin-left: auto; margin-right: auto; }

.price-row { display: flex; align-items: baseline; gap: 8px; }
.price-row .price { font-size: 26px; font-weight: 800; color: var(--gold-400); text-shadow: 0 0 14px rgba(212,175,55,.3); }
.price-row .price-old { font-size: 14px; color: var(--text-3); text-decoration: line-through; }
.price-row .price-note { font-size: 12px; color: var(--gold-400); }

/* ---------- FAQ ---------- */
.faq-list { max-width: 820px; margin: 0 auto; }
.faq-item {
  border: 1px solid rgba(212,175,55,.18); border-radius: var(--radius);
  margin-bottom: 14px; overflow: hidden;
  background: linear-gradient(160deg, rgba(30,10,62,.6), rgba(19,3,39,.85));
  transition: box-shadow .25s, border-color .25s;
}
.faq-item:hover { box-shadow: 0 0 26px rgba(212,175,55,.14); border-color: rgba(212,175,55,.4); }
.faq-item summary {
  list-style: none; cursor: pointer;
  padding: 20px 24px; font-size: 16px; font-weight: 600; color: #f2edff;
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+"; font-size: 22px; color: var(--gold-400); font-weight: 700;
  transition: transform .25s; flex-shrink: 0; text-shadow: 0 0 10px rgba(212,175,55,.5);
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item .faq-answer { padding: 0 24px 20px; color: var(--text-2); font-size: 15px; }

/* ---------- 关于我们 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; margin-top: 40px; }
.contact-box {
  background: linear-gradient(160deg, rgba(30,10,62,.6), rgba(19,3,39,.85));
  border: 1px solid rgba(212,175,55,.18); border-radius: var(--radius); padding: 26px;
}
.contact-box h3 { font-size: 16px; color: #f2edff; margin-bottom: 14px; display: flex; align-items: center; gap: 8px; }
.contact-box h3::before { content: ""; width: 12px; height: 3px; background: linear-gradient(90deg, var(--gold-500), var(--gold-300)); border-radius: 2px; }
.contact-box li { display: flex; gap: 12px; padding: 8px 0; color: var(--text-2); font-size: 15px; }
.contact-box li b { color: var(--gold-300); min-width: 64px; font-weight: 600; }
.form-field { margin-bottom: 16px; }
.form-field label { display: block; font-size: 13px; color: var(--text-2); margin-bottom: 6px; }
.form-field input, .form-field textarea {
  width: 100%; padding: 12px 16px; border: 1px solid rgba(255,255,255,.12);
  border-radius: 10px; font-size: 15px; font-family: inherit;
  background: rgba(13,3,32,.6); color: var(--text); transition: border-color .2s, box-shadow .2s;
}
.form-field input:focus, .form-field textarea:focus { outline: none; border-color: var(--gold-500); box-shadow: 0 0 14px rgba(212,175,55,.2); }
.form-field input::placeholder, .form-field textarea::placeholder { color: var(--text-3); }

/* ---------- CTA 横幅 ---------- */
.cta-band {
  background:
    radial-gradient(700px 320px at 50% 0%, rgba(212,175,55,.16), transparent 65%),
    linear-gradient(135deg, #160530, #2a0f63 55%, #160530);
  color: #fff; text-align: center; padding: 72px 24px;
  position: relative; overflow: hidden;
  border-top: 1px solid rgba(212,175,55,.18);
  border-bottom: 1px solid rgba(212,175,55,.18);
}
.cta-band::before {
  content: ""; position: absolute; inset: 0; opacity: .08;
  background-image: linear-gradient(rgba(168,139,255,.6) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(168,139,255,.6) 1px, transparent 1px);
  background-size: 44px 44px;
}
.cta-band h2 {
  position: relative; font-size: 32px; font-weight: 800;
  background: linear-gradient(120deg, #fff, #d9c9ff 60%, var(--gold-300));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.cta-band p { position: relative; margin: 14px auto 30px; color: rgba(237,232,255,.8); max-width: 560px; }
.cta-band .btn { position: relative; }

/* ---------- 企业微信二维码模块 ---------- */
/* 页面级二维码卡片（联系方式区 / CTA 区） */
.qr-block {
  position: relative;
  display: flex; align-items: center; gap: 34px;
  max-width: 620px; margin: 0 auto;
  padding: 30px 38px;
  background: linear-gradient(160deg, rgba(30,10,62,.72), rgba(19,3,39,.9));
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: var(--radius);
  border: 1px solid rgba(212,175,55,.28);
  box-shadow: 0 18px 50px rgba(10,2,26,.6), 0 0 40px rgba(212,175,55,.1);
  overflow: hidden;
  transition: box-shadow .25s, border-color .25s, transform .25s;
}
.qr-block::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px;
  background: linear-gradient(135deg, rgba(212,175,55,.5), transparent 38%, transparent 68%, rgba(139,92,246,.55));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity: .75; pointer-events: none;
}
.qr-block:hover { transform: translateY(-3px); border-color: rgba(212,175,55,.5); box-shadow: 0 22px 60px rgba(10,2,26,.7), 0 0 50px rgba(212,175,55,.22); }
.qr-img-wrap {
  flex-shrink: 0;
  width: 148px; height: 148px; padding: 10px;
  background: #fff; border-radius: 14px;
  border: 2px solid rgba(212,175,55,.55);
  box-shadow: 0 0 22px rgba(212,175,55,.3), inset 0 0 12px rgba(212,175,55,.15);
}
.qr-img-wrap img { width: 100%; height: 100%; object-fit: contain; border-radius: 8px; }
.qr-info h3 { font-size: 19px; color: #f2edff; margin-bottom: 8px; letter-spacing: .5px; }
.qr-info h3 .text-gold { color: var(--gold-300); -webkit-text-fill-color: var(--gold-300); }
.qr-info p { font-size: 14px; color: var(--text-2); margin-bottom: 14px; line-height: 1.7; }
.qr-info .btn { padding: 10px 22px; font-size: 13px; }

/* 页脚小二维码 */
.footer-qr { display: flex; align-items: center; gap: 12px; margin-top: 14px; }
.footer-qr img {
  width: 72px; height: 72px; padding: 5px;
  background: #fff; border-radius: 10px;
  border: 1px solid rgba(212,175,55,.45);
  box-shadow: 0 0 14px rgba(212,175,55,.25);
}
.footer-qr span { font-size: 12px; color: var(--text-2); line-height: 1.7; letter-spacing: 1px; }
.footer-qr span b { display: block; color: var(--gold-300); font-size: 13px; }

/* 响应式：窄屏时二维码卡片上下排布 */
@media (max-width: 560px) {
  .qr-block { flex-direction: column; text-align: center; padding: 28px 24px; gap: 20px; }
  .qr-img-wrap { width: 132px; height: 132px; }
}

/* ---------- 页脚 ---------- */
.site-footer {
  background: linear-gradient(180deg, #0c031f, #08010f);
  color: rgba(237,232,255,.7); padding: 64px 0 0;
  border-top: 1px solid rgba(212,175,55,.2);
}
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 44px; }
.footer-brand .logo-text { color: #fff; }
.footer-brand p { font-size: 14px; margin-top: 16px; max-width: 300px; color: var(--text-2); }
.footer-col h4 { color: #fff; font-size: 15px; letter-spacing: 1px; margin-bottom: 18px; }
.footer-col h4::after { content: ""; display: block; width: 26px; height: 2px; margin-top: 8px; background: linear-gradient(90deg, var(--gold-500), transparent); }
.footer-col li { margin-bottom: 10px; }
.footer-col a { font-size: 14px; transition: color .2s; }
.footer-col a:hover { color: var(--gold-300); text-shadow: 0 0 10px rgba(212,175,55,.4); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding: 20px 0; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 13px; color: rgba(237,232,255,.4); }

/* ---------- 面包屑 ---------- */
.breadcrumb { font-size: 13px; color: var(--text-3); padding: 20px 0; }
.breadcrumb a:hover { color: var(--gold-300); }
.breadcrumb span { margin: 0 8px; }

/* ---------- 响应式 ---------- */
@media (max-width: 992px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .card-wide { grid-template-columns: 240px 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; gap: 32px; }
  .founder-card { grid-template-columns: 1fr; }
  .feature-row { grid-template-columns: 1fr; gap: 28px; }
  .gallery-grid { grid-template-columns: 1fr; gap: 20px; }
  .company-grid { grid-template-columns: 1fr; gap: 20px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero-title { font-size: 40px; }
}

@media (max-width: 768px) {
  .section { padding: 60px 0; }
  .main-nav {
    position: fixed; top: 72px; left: 0; right: 0;
    background: rgba(13,3,32,.97);
    backdrop-filter: blur(16px);
    flex-direction: column; gap: 0;
    padding: 12px 24px 20px;
    border-bottom: 1px solid rgba(212,175,55,.25);
    box-shadow: var(--shadow-md);
    display: none;
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 13px 0; border-bottom: 1px solid rgba(255,255,255,.08); }
  .main-nav a:last-child { border-bottom: none; }
  .nav-toggle { display: block; }
  .header-cta { display: none; }
  .hero { min-height: 64vh; }
  .hero-title { font-size: 32px; }
  .hero-sub { font-size: 15px; }
  .card-grid { grid-template-columns: 1fr; }
  .card-wide { grid-template-columns: 1fr; }
  .card-wide .card-media { min-height: 200px; }
  .card-wide.cover-banner .card-media { min-height: 0; aspect-ratio: 1600/558; }
  .card-wide .card-body { padding: 26px 22px; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .split-media { height: 260px; }
  .founder-photo { min-height: 300px; }
}

/* ============================================================
   课程页 · 新增组件（大纲 / SOP / 陪跑卡 / 导师卡）
   ============================================================ */

/* 课程大纲四板块 */
.curriculum-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; margin-top: 40px; }
.curriculum-block {
  background: rgba(30, 10, 62, .55);
  border: 1px solid rgba(212, 175, 55, .18);
  border-radius: var(--radius);
  padding: 26px 26px 10px;
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  transition: border-color .25s, box-shadow .25s, transform .25s;
}
.curriculum-block:hover { border-color: rgba(212,175,55,.45); box-shadow: var(--glow-gold); transform: translateY(-3px); }
.curriculum-head { display: flex; align-items: center; gap: 14px; margin-bottom: 6px; }
.curriculum-num {
  font-size: 30px; font-weight: 800; line-height: 1;
  background: linear-gradient(120deg, var(--gold-300), var(--gold-500));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  text-shadow: 0 0 22px rgba(212,175,55,.35);
}
.curriculum-head h4 { font-size: 20px; color: #f2edff; letter-spacing: 1px; }
.curriculum-desc { font-size: 13px; color: var(--gold-400); margin-bottom: 14px; letter-spacing: .4px; }
.curriculum-list { list-style: none; }
.curriculum-list li {
  position: relative; padding: 9px 0 9px 20px;
  border-top: 1px dashed rgba(255,255,255,.08);
  font-size: 14px; color: var(--text-2); line-height: 1.6;
}
.curriculum-list li::before {
  content: ""; position: absolute; left: 2px; top: 17px;
  width: 7px; height: 7px; border-radius: 50%;
  background: linear-gradient(135deg, var(--gold-400), var(--purple-400));
  box-shadow: 0 0 8px rgba(212,175,55,.5);
}
.curriculum-list li b { color: var(--gold-300); font-weight: 600; margin-right: 6px; }

/* 15 份 SOP 资料 */
.sop-panel {
  margin-top: 28px;
  background: linear-gradient(135deg, rgba(109,61,240,.14), rgba(212,175,55,.08));
  border: 1px solid rgba(139,92,246,.3);
  border-radius: var(--radius);
  padding: 30px 32px 24px;
  box-shadow: var(--shadow-sm);
}
.sop-title { display: flex; align-items: flex-start; gap: 14px; margin-bottom: 18px; }
.sop-icon { font-size: 26px; line-height: 1.2; filter: drop-shadow(0 0 10px rgba(212,175,55,.5)); }
.sop-title h4 { font-size: 19px; color: #f2edff; }
.sop-title p { font-size: 13px; color: var(--text-2); margin-top: 4px; }
.sop-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px 26px; list-style: none; }
.sop-list li {
  position: relative; padding-left: 20px; font-size: 14px; color: var(--text-2);
  line-height: 1.7;
}
.sop-list li::before {
  content: "✓"; position: absolute; left: 0; top: 0;
  color: var(--gold-400); font-weight: 700;
}

/* 1V1 陪跑卡 */
.coach-grid { margin-top: 36px; }
.coach-card .card-body { text-align: center; }
.coach-card .card-tag { margin-bottom: 14px; }
.coach-card h3 { font-size: 20px; }
.coach-price {
  font-size: 34px; font-weight: 800; margin: 10px 0 2px;
  background: linear-gradient(120deg, var(--gold-300), var(--gold-500));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  text-shadow: 0 0 24px rgba(212,175,55,.35);
}
.coach-desc { font-size: 13px; color: var(--text-2); margin-bottom: 16px; }
.coach-card .card-specs { justify-content: center; text-align: left; }

/* 录播课咨询入口（¥999） */
.enroll-panel {
  text-align: center;
  background: linear-gradient(160deg, rgba(109,61,240,.12), rgba(212,175,55,.08) 60%, rgba(109,61,240,.06));
  border: 1px solid rgba(168,139,255,.28);
  border-radius: var(--radius);
  padding: 44px 28px 40px;
  box-shadow: var(--shadow-md);
}
.enroll-price {
  font-size: 60px; font-weight: 800; line-height: 1.05; letter-spacing: 1px;
  background: linear-gradient(120deg, var(--gold-300), var(--gold-500));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  text-shadow: 0 0 32px rgba(212,175,55,.35);
}
.enroll-note {
  display: block; font-size: 14px; font-weight: 500; letter-spacing: 1px;
  color: rgba(237,232,255,.72); margin-top: 10px;
  background: none; -webkit-text-fill-color: currentColor;
}
.enroll-specs {
  list-style: none; display: flex; flex-wrap: wrap; justify-content: center;
  gap: 12px 30px; margin: 28px 0 32px; padding: 0;
}
.enroll-specs li {
  font-size: 15px; font-weight: 600; color: rgba(237,232,255,.9);
  letter-spacing: .4px;
}
.enroll-specs li::before {
  content: "✦"; color: var(--gold-400); margin-right: 8px;
  text-shadow: 0 0 8px rgba(212,175,55,.7);
}
.enroll-btn { padding: 14px 44px; font-size: 16px; letter-spacing: 1px; }

/* 导师卡 */
.mentor-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; margin-top: 12px; }
.mentor-card {
  display: grid; grid-template-columns: 220px 1fr; gap: 26px;
  background: rgba(30, 10, 62, .55);
  border: 1px solid rgba(212, 175, 55, .2);
  border-radius: var(--radius);
  padding: 26px;
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  transition: border-color .25s, box-shadow .25s, transform .25s;
}
.mentor-card:hover { border-color: rgba(212,175,55,.45); box-shadow: var(--glow-gold); transform: translateY(-3px); }
.mentor-photo {
  aspect-ratio: 3/4; overflow: hidden; border-radius: 12px;
  border: 1px solid rgba(212,175,55,.25);
}
.mentor-photo img { width: 100%; height: 100%; object-fit: cover; object-position: top center; display: block; }
.mentor-body h3 { font-size: 22px; color: #f2edff; margin: 10px 0 4px; }
.mentor-body h3 small { font-size: 13px; color: var(--gold-400); font-weight: 500; margin-left: 6px; }
.mentor-role { font-size: 13px; color: var(--gold-400); margin-bottom: 14px; letter-spacing: .3px; }
.mentor-list { list-style: none; }
.mentor-list li {
  position: relative; padding: 8px 0 8px 18px;
  border-top: 1px dashed rgba(255,255,255,.08);
  font-size: 13.5px; color: var(--text-2); line-height: 1.65;
}
.mentor-list li::before {
  content: ""; position: absolute; left: 1px; top: 16px;
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--gold-500); box-shadow: 0 0 7px rgba(212,175,55,.55);
}

/* 两性技巧课程 · 底部提示 */
.course-more { text-align: center; font-size: 14px; color: var(--text-3); margin-top: 28px; }

/* 关于页 · 页脚小字（公司信息次要层级） */
.legal-note {
  text-align: center; font-size: 12px; line-height: 2;
  color: var(--text-3); letter-spacing: .5px;
  max-width: 760px; margin: 8px auto 0; padding: 0 16px;
}

/* 两性技巧卡 · 方向标题占位 */
.media-tag::before { content: none; }
.media-tag {
  font-size: 17px; font-weight: 700; letter-spacing: 2px;
  color: var(--gold-300); text-shadow: 0 0 14px rgba(212,175,55,.35);
  background:
    radial-gradient(240px 150px at 50% 30%, rgba(212,175,55,.12), transparent 65%),
    linear-gradient(160deg, var(--navy-100), #150630);
}

/* 两性技巧课程 · 两列大卡布局 */
@media (min-width: 769px) { .card-grid.couple-grid { grid-template-columns: 1fr 1fr; gap: 32px; } }
.couple-grid .card-media { height: auto; aspect-ratio: 16 / 7; }
.couple-grid .media-tag { font-size: 24px; letter-spacing: 4px; }
.couple-grid .card-body { padding: 28px; }
.couple-grid .card-body h3 { font-size: 22px; }
.couple-grid .card-body p { font-size: 15px; line-height: 1.8; }

/* 响应式 */
@media (max-width: 992px) {
  .curriculum-grid { grid-template-columns: 1fr; }
  .sop-list { grid-template-columns: repeat(2, 1fr); }
  .mentor-grid { grid-template-columns: 1fr; }
  .mentor-card { grid-template-columns: 180px 1fr; }
}
@media (max-width: 768px) {
  .sop-list { grid-template-columns: 1fr; }
  .mentor-card { grid-template-columns: 1fr; }
  .mentor-photo { max-height: 340px; }
}