/* ============================================================
   星杉个人站 · StarCedar — 设计系统
   高端大气 / Apple 风格滚动叙事 / 多重视差
   ============================================================ */
:root {
  --ink: #0c1f17;
  --pine: #0b3d2e;
  --pine-2: #10513d;
  --gold: #c9a961;
  --gold-2: #e8d5a8;
  --cream: #f7f5f0;
  --paper: #ffffff;
  --mist: #eef0ec;
  --text: #1c2b24;
  --text-2: #5c6b63;
  --radius-lg: 28px;
  --radius-md: 18px;
  --shadow-lg: 0 30px 80px rgba(11, 61, 46, 0.18);
  --shadow-md: 0 16px 44px rgba(11, 61, 46, 0.12);
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --font-display: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-display);
  color: var(--text);
  background: var(--cream);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

::selection { background: var(--gold); color: #fff; }

/* ---------- 通用容器 ---------- */
.container { width: min(1200px, 92vw); margin: 0 auto; }
.section { padding: 120px 0; position: relative; }
.section-dark { background: var(--ink); color: #f2f3f0; }
.section-cream { background: var(--cream); }
.section-white { background: var(--paper); }

.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 13px; letter-spacing: 0.35em; text-transform: uppercase;
  color: var(--gold); font-weight: 600; margin-bottom: 18px;
}
.eyebrow::before { content: ""; width: 34px; height: 1px; background: var(--gold); }

.h-display {
  font-size: clamp(34px, 5vw, 62px);
  line-height: 1.12; font-weight: 700; letter-spacing: 0.01em;
}
.h-display .accent { color: var(--gold); }
.section-sub {
  margin-top: 20px; font-size: clamp(15px, 1.4vw, 18px);
  color: var(--text-2); line-height: 1.9; max-width: 640px;
}
.section-dark .section-sub { color: rgba(242, 243, 240, 0.65); }

.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 16px 34px; border-radius: 999px; font-size: 15px; font-weight: 600;
  transition: transform 0.4s var(--ease-out), box-shadow 0.4s var(--ease-out), background 0.3s;
  cursor: pointer; border: none;
}
.btn-gold { background: linear-gradient(135deg, var(--gold), #b28f45); color: #fff; box-shadow: 0 12px 30px rgba(201, 169, 97, 0.35); }
.btn-gold:hover { transform: translateY(-3px) scale(1.02); box-shadow: 0 18px 44px rgba(201, 169, 97, 0.45); }
.btn-ghost { background: transparent; color: #fff; border: 1px solid rgba(255, 255, 255, 0.4); }
.btn-ghost:hover { background: rgba(255, 255, 255, 0.1); transform: translateY(-3px); }
.btn-dark { background: var(--pine); color: #fff; }
.btn-dark:hover { background: var(--pine-2); transform: translateY(-3px); }

/* ---------- 导航 ---------- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  transition: background 0.4s, backdrop-filter 0.4s, box-shadow 0.4s;
}
.nav-inner {
  width: min(1280px, 94vw); margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  height: 72px;
}
.nav-logo { display: flex; align-items: center; gap: 12px; color: #fff; font-weight: 700; font-size: 19px; letter-spacing: 0.06em; }
.nav-logo svg { width: 34px; height: 34px; }
.nav-logo small { display: block; font-size: 10px; letter-spacing: 0.3em; font-weight: 500; opacity: 0.7; }
.nav-links { display: flex; gap: 38px; align-items: center; }
.nav-links a {
  color: rgba(255, 255, 255, 0.82); font-size: 14.5px; font-weight: 500;
  position: relative; padding: 6px 0; transition: color 0.3s;
}
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: 0; width: 0; height: 2px;
  background: var(--gold); transition: width 0.35s var(--ease-out);
}
.nav-links a:hover, .nav-links a.active { color: #fff; }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-cta {
  padding: 10px 22px; border-radius: 999px; font-size: 13.5px; font-weight: 600;
  background: var(--gold); color: #fff !important; transition: transform 0.3s, box-shadow 0.3s;
}
.nav-cta::after { display: none; }
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(201, 169, 97, 0.4); }

.nav.scrolled {
  background: rgba(10, 24, 18, 0.82);
  backdrop-filter: blur(18px) saturate(1.4);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.18);
}
.nav.light-page:not(.scrolled) .nav-logo,
.nav.light-page:not(.scrolled) .nav-links a { color: var(--ink); }
.nav.light-page:not(.scrolled) .nav-links a::after { background: var(--pine); }

/* ---------- Hero（Apple 式 3D 滚动） ---------- */
.hero-track { height: 260vh; position: relative; }
.hero-stage {
  position: sticky; top: 0; height: 100vh; overflow: hidden;
  background: radial-gradient(120% 90% at 50% 110%, #14503b 0%, #0b3527 38%, #071e16 70%, #040f0b 100%);
  perspective: 1200px;
}
.hero-stars { position: absolute; inset: 0; opacity: 0.9; }
.hero-glow {
  position: absolute; left: 50%; top: 58%; transform: translate(-50%, -50%);
  width: 1100px; height: 1100px; border-radius: 50%;
  background: radial-gradient(circle, rgba(201, 169, 97, 0.22) 0%, rgba(201, 169, 97, 0.05) 42%, transparent 68%);
  pointer-events: none;
}
.hero-mountains { position: absolute; left: 0; right: 0; bottom: -2px; pointer-events: none; }
.hero-mountains svg { width: 100%; height: auto; display: block; }

.hero-content {
  position: absolute; inset: 0; display: flex; flex-direction: column;
  align-items: center; justify-content: center; text-align: center;
  color: #fff; z-index: 5; transform-style: preserve-3d;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 9px 22px; border-radius: 999px; font-size: 13px; letter-spacing: 0.2em;
  border: 1px solid rgba(232, 213, 168, 0.45); color: var(--gold-2);
  background: rgba(201, 169, 97, 0.08); margin-bottom: 30px;
}
.hero-title {
  font-size: clamp(52px, 9vw, 128px); font-weight: 800; line-height: 1.04;
  letter-spacing: 0.04em;
  background: linear-gradient(180deg, #ffffff 30%, #d8c290 100%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.hero-sub {
  margin-top: 26px; font-size: clamp(16px, 2vw, 24px); font-weight: 300;
  color: rgba(255, 255, 255, 0.78); letter-spacing: 0.5em; text-indent: 0.5em;
}
.hero-desc { margin-top: 18px; font-size: 15px; color: rgba(255, 255, 255, 0.5); letter-spacing: 0.12em; }
.hero-actions { margin-top: 44px; display: flex; gap: 18px; flex-wrap: wrap; justify-content: center; }

.hero-cards { position: absolute; inset: 0; pointer-events: none; z-index: 4; transform-style: preserve-3d; }
.hero-card {
  position: absolute; padding: 18px 24px; border-radius: 18px;
  background: rgba(255, 255, 255, 0.07); border: 1px solid rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(12px); color: #fff; box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}
.hero-card b { display: block; font-size: 22px; color: var(--gold-2); }
.hero-card span { font-size: 12.5px; color: rgba(255, 255, 255, 0.65); letter-spacing: 0.08em; }
.hc-1 { left: 9%; top: 24%; }
.hc-2 { right: 8%; top: 30%; }
.hc-3 { left: 14%; bottom: 26%; }
.hc-4 { right: 12%; bottom: 20%; }

.hero-scroll-hint {
  position: absolute; bottom: 34px; left: 50%; transform: translateX(-50%);
  color: rgba(255, 255, 255, 0.55); font-size: 12px; letter-spacing: 0.3em;
  display: flex; flex-direction: column; align-items: center; gap: 10px; z-index: 6;
}
.hero-scroll-hint::after {
  content: ""; width: 1px; height: 46px;
  background: linear-gradient(180deg, var(--gold), transparent);
  animation: hint 1.8s ease-in-out infinite;
}
@keyframes hint { 0%, 100% { transform: scaleY(0.4); opacity: 0.4; } 50% { transform: scaleY(1); opacity: 1; } }

/* ---------- 数据条 ---------- */
.stats { background: var(--ink); padding: 90px 0 110px; color: #fff; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; }
.stat { text-align: center; padding: 10px; }
.stat b {
  font-size: clamp(38px, 4.6vw, 60px); font-weight: 800;
  background: linear-gradient(180deg, #fff, var(--gold-2));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.stat b i { font-style: normal; font-size: 0.55em; color: var(--gold); -webkit-text-fill-color: var(--gold); }
.stat span { display: block; margin-top: 10px; font-size: 14px; color: rgba(255, 255, 255, 0.55); letter-spacing: 0.15em; }

/* ---------- 留学方案卡片 ---------- */
.plans-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-top: 64px; }
.plan-card {
  position: relative; border-radius: var(--radius-lg); overflow: hidden;
  padding: 46px 38px 42px; min-height: 480px; display: flex; flex-direction: column;
  color: #fff; transform-style: preserve-3d; transition: transform 0.5s var(--ease-out), box-shadow 0.5s;
  box-shadow: var(--shadow-md); will-change: transform;
}
.plan-card:hover { box-shadow: var(--shadow-lg); }
.plan-bachelor { background: linear-gradient(160deg, #14523c 0%, #0a2e21 100%); }
.plan-master { background: linear-gradient(160deg, #253a63 0%, #101c33 100%); }
.plan-phd { background: linear-gradient(160deg, #4c3a1f 0%, #241a0b 100%); }
.plan-num { font-size: 60px; font-weight: 800; opacity: 0.14; position: absolute; top: 22px; right: 30px; }
.plan-tag { font-size: 12px; letter-spacing: 0.3em; color: var(--gold-2); margin-bottom: 16px; }
.plan-card h3 { font-size: 28px; font-weight: 700; margin-bottom: 14px; }
.plan-card p { font-size: 14.5px; line-height: 1.9; color: rgba(255, 255, 255, 0.72); }
.plan-list { margin-top: 26px; display: grid; gap: 12px; }
.plan-list li { display: flex; gap: 10px; font-size: 13.5px; color: rgba(255, 255, 255, 0.85); align-items: center; }
.plan-list li::before { content: "◆"; color: var(--gold); font-size: 9px; }
.plan-link { margin-top: auto; padding-top: 30px; color: var(--gold-2); font-size: 14px; font-weight: 600; letter-spacing: 0.06em; }
.plan-link:hover { color: #fff; }

/* ---------- 大屏图片视差 ---------- */
.mega-parallax { position: relative; height: 92vh; overflow: hidden; }
.mega-bg {
  position: absolute; inset: -18% 0; will-change: transform;
  background:
    radial-gradient(80% 60% at 70% 20%, rgba(201, 169, 97, 0.25), transparent 60%),
    linear-gradient(180deg, #0e2c40 0%, #123a52 45%, #0a1f2e 100%);
}
.mega-bg svg { position: absolute; inset: auto 0 0 0; width: 100%; }
.mega-overlay {
  position: relative; z-index: 3; height: 100%; display: flex;
  flex-direction: column; justify-content: center; color: #fff;
}
.mega-overlay .h-display { max-width: 700px; text-shadow: 0 8px 40px rgba(0, 0, 0, 0.4); }
.mega-float { position: absolute; will-change: transform; pointer-events: none; }
.mf-1 { right: 12%; top: 18%; width: 130px; height: 130px; border-radius: 32px;
  background: linear-gradient(140deg, rgba(255,255,255,0.16), rgba(255,255,255,0.03));
  border: 1px solid rgba(255,255,255,0.2); backdrop-filter: blur(8px);
  display: flex; align-items: center; justify-content: center; font-size: 50px; }
.mf-2 { right: 24%; bottom: 24%; width: 96px; height: 96px; border-radius: 24px;
  background: linear-gradient(140deg, rgba(201,169,97,0.35), rgba(201,169,97,0.08));
  border: 1px solid rgba(232,213,168,0.35); backdrop-filter: blur(8px);
  display: flex; align-items: center; justify-content: center; font-size: 38px; }
.mf-3 { right: 7%; bottom: 38%; width: 72px; height: 72px; border-radius: 50%;
  background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.25);
  display: flex; align-items: center; justify-content: center; font-size: 30px; }

/* ---------- 课程模块 ---------- */
.course-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; margin-top: 60px; }
.course-card {
  background: var(--paper); border-radius: var(--radius-md); padding: 36px 28px;
  border: 1px solid rgba(11, 61, 46, 0.08); transition: transform 0.45s var(--ease-out), box-shadow 0.45s;
  position: relative; overflow: hidden;
}
.course-card::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 4px;
  background: linear-gradient(90deg, var(--gold), transparent);
  transform: scaleX(0); transform-origin: left; transition: transform 0.5s var(--ease-out);
}
.course-card:hover { transform: translateY(-10px); box-shadow: var(--shadow-md); }
.course-card:hover::before { transform: scaleX(1); }
.course-icon {
  width: 58px; height: 58px; border-radius: 16px; display: flex; align-items: center;
  justify-content: center; font-size: 26px; margin-bottom: 22px;
  background: linear-gradient(140deg, rgba(11, 61, 46, 0.08), rgba(201, 169, 97, 0.14));
}
.course-card h4 { font-size: 19px; margin-bottom: 10px; color: var(--pine); }
.course-card p { font-size: 13.5px; line-height: 1.85; color: var(--text-2); }
.course-tags { margin-top: 18px; display: flex; flex-wrap: wrap; gap: 8px; }
.course-tags span {
  font-size: 11.5px; padding: 5px 12px; border-radius: 999px;
  background: var(--mist); color: var(--pine); letter-spacing: 0.04em;
}

/* ---------- 切片展开效果 ---------- */
.slice-section { background: var(--ink); padding: 130px 0; overflow: hidden; }
.slice-wrap { margin-top: 70px; position: relative; height: 460px; border-radius: var(--radius-lg); overflow: hidden; display: flex; box-shadow: var(--shadow-lg); }
.slice {
  flex: 1; position: relative; overflow: hidden;
  transform: translateY(110%); transition: transform 1s var(--ease-out);
}
.slice-wrap.revealed .slice { transform: translateY(0); }
.slice:nth-child(1) { transition-delay: 0s; }
.slice:nth-child(2) { transition-delay: 0.1s; }
.slice:nth-child(3) { transition-delay: 0.2s; }
.slice:nth-child(4) { transition-delay: 0.3s; }
.slice:nth-child(5) { transition-delay: 0.4s; }
.slice:nth-child(6) { transition-delay: 0.5s; }
.slice-inner {
  position: absolute; top: 0; bottom: 0; width: 100vw;
  background:
    radial-gradient(70% 50% at 30% 20%, rgba(201, 169, 97, 0.35), transparent 55%),
    linear-gradient(160deg, #155741 0%, #0a2f22 55%, #071f17 100%);
}
.slice-inner::after {
  content: ""; position: absolute; inset: 0;
  background-image:
    radial-gradient(2px 2px at 12% 30%, rgba(255,255,255,0.8), transparent),
    radial-gradient(1.6px 1.6px at 34% 14%, rgba(255,255,255,0.7), transparent),
    radial-gradient(2px 2px at 55% 40%, rgba(255,255,255,0.6), transparent),
    radial-gradient(1.4px 1.4px at 72% 22%, rgba(255,255,255,0.75), transparent),
    radial-gradient(2px 2px at 88% 34%, rgba(255,255,255,0.65), transparent);
}
.slice-caption {
  position: absolute; inset: 0; z-index: 5; display: flex; flex-direction: column;
  align-items: center; justify-content: center; text-align: center; color: #fff;
  pointer-events: none; opacity: 0; transform: translateY(30px);
  transition: opacity 0.8s 0.65s, transform 0.8s 0.65s var(--ease-out);
}
.slice-wrap.revealed .slice-caption { opacity: 1; transform: translateY(0); }
.slice-caption b { font-size: clamp(30px, 4vw, 48px); letter-spacing: 0.12em; }
.slice-caption span { margin-top: 14px; font-size: 15px; color: var(--gold-2); letter-spacing: 0.35em; }

/* ---------- 文书指导 ---------- */
.mentor-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; margin-top: 60px; }
.mentor-card {
  border-radius: var(--radius-lg); overflow: hidden; background: var(--paper);
  border: 1px solid rgba(11, 61, 46, 0.08);
  transition: transform 0.5s var(--ease-out), box-shadow 0.5s;
}
.mentor-card:hover { transform: translateY(-12px); box-shadow: var(--shadow-lg); }
.mentor-visual {
  height: 190px; position: relative; display: flex; align-items: center; justify-content: center;
}
.mv-1 { background: linear-gradient(140deg, #0b3d2e, #167a56); }
.mv-2 { background: linear-gradient(140deg, #1d2f55, #3c5aa6); }
.mv-3 { background: linear-gradient(140deg, #5a4520, #a8842f); }
.mentor-avatar {
  width: 84px; height: 84px; border-radius: 50%; background: rgba(255, 255, 255, 0.92);
  display: flex; align-items: center; justify-content: center; font-size: 30px; font-weight: 800;
  color: var(--pine); box-shadow: 0 12px 30px rgba(0, 0, 0, 0.25); letter-spacing: 0;
}
.mentor-visual::after {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(60% 80% at 70% 10%, rgba(255, 255, 255, 0.18), transparent 60%);
}
.mentor-body { padding: 30px 30px 34px; }
.mentor-body h4 { font-size: 20px; color: var(--pine); }
.mentor-body em { display: block; font-style: normal; font-size: 12.5px; color: var(--gold); margin: 6px 0 14px; letter-spacing: 0.15em; }
.mentor-body p { font-size: 13.5px; line-height: 1.85; color: var(--text-2); }
.mentor-dirs { margin-top: 18px; display: flex; flex-wrap: wrap; gap: 8px; }
.mentor-dirs span { font-size: 11.5px; padding: 5px 12px; border-radius: 999px; background: rgba(201, 169, 97, 0.12); color: #8a6d2f; }

/* ---------- 对角网格视差（案例导览） ---------- */
.diag-section { background: var(--ink); padding: 140px 0; overflow: hidden; position: relative; }
.diag-head { position: relative; z-index: 5; color: #fff; text-align: center; margin-bottom: 20px; }
.diag-viewport { margin-top: 70px; height: 640px; position: relative; overflow: hidden; }
.diag-grid {
  position: absolute; left: 50%; top: 50%; width: 130%;
  transform: translate(-50%, -50%) rotate(-9deg);
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.diag-col { display: grid; gap: 24px; will-change: transform; }
.case-tile {
  border-radius: 20px; overflow: hidden; position: relative; height: 240px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
  transition: transform 0.45s var(--ease-out);
}
.case-tile:hover { transform: scale(1.04); }
.case-tile .ct-bg { position: absolute; inset: 0; }
.ct-a { background: linear-gradient(150deg, #14523c, #0a2c20); }
.ct-b { background: linear-gradient(150deg, #22386b, #101a30); }
.ct-c { background: linear-gradient(150deg, #6b2230, #2d0e14); }
.ct-d { background: linear-gradient(150deg, #7a5a1e, #33250b); }
.ct-e { background: linear-gradient(150deg, #1e5c66, #0a262b); }
.ct-f { background: linear-gradient(150deg, #45256b, #190d29); }
.case-tile .ct-bg::after {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(80% 60% at 80% 0%, rgba(255, 255, 255, 0.14), transparent 55%);
}
.case-meta { position: absolute; inset: auto 0 0 0; padding: 20px 22px; color: #fff; z-index: 2;
  background: linear-gradient(0deg, rgba(0,0,0,0.55), transparent); }
.case-meta b { display: block; font-size: 17px; }
.case-meta span { font-size: 12px; color: var(--gold-2); letter-spacing: 0.08em; }
.case-crest {
  position: absolute; top: 18px; left: 20px; width: 46px; height: 46px; border-radius: 12px;
  background: rgba(255, 255, 255, 0.14); border: 1px solid rgba(255, 255, 255, 0.25);
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 18px; color: #fff; backdrop-filter: blur(6px);
}
.case-offer {
  position: absolute; top: 18px; right: 18px; font-size: 10.5px; letter-spacing: 0.2em;
  padding: 6px 12px; border-radius: 999px; background: rgba(201, 169, 97, 0.85); color: #1c1508; font-weight: 700;
}
.diag-fade-l, .diag-fade-r { content: ""; position: absolute; top: 0; bottom: 0; width: 16%; z-index: 4; pointer-events: none; }
.diag-fade-l { left: 0; background: linear-gradient(90deg, var(--ink), transparent); }
.diag-fade-r { right: 0; background: linear-gradient(-90deg, var(--ink), transparent); }

/* ---------- 关于星杉 teaser ---------- */
.about-teaser { display: grid; grid-template-columns: 1.1fr 1fr; gap: 70px; align-items: center; }
.about-visual {
  position: relative; height: 480px; border-radius: var(--radius-lg); overflow: hidden;
  background: linear-gradient(150deg, #0b3d2e 0%, #071f17 100%); box-shadow: var(--shadow-lg);
}
.about-visual svg { position: absolute; inset: auto 0 0 0; width: 100%; }
.about-orbit {
  position: absolute; left: 50%; top: 42%; transform: translate(-50%, -50%);
  width: 300px; height: 300px; border: 1px dashed rgba(201, 169, 97, 0.4); border-radius: 50%;
  animation: spin 40s linear infinite;
}
.about-orbit::after {
  content: "✦"; position: absolute; top: -12px; left: 50%; color: var(--gold); font-size: 20px;
}
@keyframes spin { to { transform: translate(-50%, -50%) rotate(360deg); } }
.about-star {
  position: absolute; left: 50%; top: 42%; transform: translate(-50%, -50%);
  font-size: 72px; filter: drop-shadow(0 0 30px rgba(201, 169, 97, 0.7));
}
.about-points { margin-top: 34px; display: grid; gap: 20px; }
.about-points li { display: flex; gap: 16px; align-items: flex-start; }
.about-points b { color: var(--pine); font-size: 16px; display: block; margin-bottom: 4px; }
.about-points p { font-size: 13.5px; color: var(--text-2); line-height: 1.8; }
.ap-ico {
  flex: 0 0 46px; width: 46px; height: 46px; border-radius: 14px; font-size: 20px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(140deg, rgba(11, 61, 46, 0.1), rgba(201, 169, 97, 0.16));
}

/* ---------- CTA / 页脚 ---------- */
.cta-band {
  position: relative; overflow: hidden; padding: 110px 0; color: #fff; text-align: center;
  background: linear-gradient(140deg, #0b3d2e 0%, #123f2f 50%, #2a2410 100%);
}
.cta-band::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(60% 90% at 50% -20%, rgba(201, 169, 97, 0.3), transparent 60%);
}
.cta-band .container { position: relative; z-index: 2; }
.cta-band h2 { font-size: clamp(30px, 4.4vw, 52px); font-weight: 700; }
.cta-band p { margin-top: 18px; color: rgba(255, 255, 255, 0.7); font-size: 16px; letter-spacing: 0.08em; }
.cta-band .btn { margin-top: 40px; }
.cta-247 {
  display: inline-flex; align-items: center; gap: 10px; margin-top: 26px;
  font-size: 13px; color: var(--gold-2); letter-spacing: 0.2em;
}
.cta-247 i { width: 8px; height: 8px; border-radius: 50%; background: #62d99a; box-shadow: 0 0 12px #62d99a; animation: pulse 1.6s infinite; font-style: normal; }
@keyframes pulse { 50% { opacity: 0.4; } }

.footer { background: #06120d; color: rgba(255, 255, 255, 0.6); padding: 80px 0 40px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 48px; }
.footer h5 { color: #fff; font-size: 15px; margin-bottom: 22px; letter-spacing: 0.1em; }
.footer a, .footer p { font-size: 13.5px; line-height: 2.2; color: rgba(255, 255, 255, 0.55); display: block; }
.footer a:hover { color: var(--gold-2); }
.footer-logo { display: flex; align-items: center; gap: 12px; color: #fff; font-size: 20px; font-weight: 700; margin-bottom: 18px; }
.footer-logo svg { width: 36px; height: 36px; }
.footer-bottom {
  margin-top: 60px; padding-top: 26px; border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex; justify-content: space-between; font-size: 12.5px; color: rgba(255, 255, 255, 0.35);
  flex-wrap: wrap; gap: 10px;
}

/* ---------- 子页面通用 Banner ---------- */
.page-hero {
  position: relative; padding: 200px 0 120px; color: #fff; overflow: hidden;
  background: radial-gradient(110% 80% at 50% 120%, #14503b 0%, #0b3527 45%, #071e16 80%);
}
.page-hero .hero-stars { opacity: 0.6; }
.page-hero .container { position: relative; z-index: 3; }
.page-hero h1 { font-size: clamp(38px, 6vw, 72px); font-weight: 800; letter-spacing: 0.03em; }
.page-hero p { margin-top: 20px; font-size: 16px; color: rgba(255, 255, 255, 0.65); letter-spacing: 0.1em; max-width: 620px; line-height: 1.9; }
.breadcrumb { font-size: 12.5px; letter-spacing: 0.2em; color: var(--gold-2); margin-bottom: 24px; }

/* ---------- 时间线（关于页） ---------- */
.timeline { margin-top: 70px; position: relative; padding-left: 40px; }
.timeline::before { content: ""; position: absolute; left: 8px; top: 6px; bottom: 6px; width: 2px; background: linear-gradient(180deg, var(--gold), rgba(201, 169, 97, 0.1)); }
.tl-item { position: relative; padding-bottom: 46px; }
.tl-item::before {
  content: ""; position: absolute; left: -39px; top: 5px; width: 16px; height: 16px;
  border-radius: 50%; background: var(--cream); border: 3px solid var(--gold);
}
.tl-item b { font-size: 20px; color: var(--pine); }
.tl-item em { font-style: normal; color: var(--gold); font-size: 13px; margin-left: 12px; letter-spacing: 0.15em; }
.tl-item p { margin-top: 8px; font-size: 14px; color: var(--text-2); line-height: 1.85; max-width: 560px; }

/* ---------- 价值观卡 ---------- */
.values-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 60px; }
.value-card {
  padding: 44px 34px; border-radius: var(--radius-lg); background: var(--paper);
  border: 1px solid rgba(11, 61, 46, 0.08); text-align: center;
  transition: transform 0.5s var(--ease-out), box-shadow 0.5s;
}
.value-card:hover { transform: translateY(-10px); box-shadow: var(--shadow-md); }
.value-card i { font-style: normal; font-size: 40px; display: block; margin-bottom: 20px; }
.value-card h4 { color: var(--pine); font-size: 19px; margin-bottom: 12px; }
.value-card p { font-size: 13.5px; color: var(--text-2); line-height: 1.85; }

/* ---------- 联系页 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 60px; margin-top: 20px; }
.contact-card {
  display: flex; gap: 18px; padding: 26px; border-radius: var(--radius-md);
  background: var(--paper); border: 1px solid rgba(11, 61, 46, 0.08); margin-bottom: 18px;
  transition: transform 0.4s var(--ease-out), box-shadow 0.4s;
}
.contact-card:hover { transform: translateX(8px); box-shadow: var(--shadow-md); }
.contact-card .ap-ico { font-size: 22px; }
.contact-card b { color: var(--pine); font-size: 16px; display: block; margin-bottom: 6px; }
.contact-card p { font-size: 13.5px; color: var(--text-2); line-height: 1.8; }
.contact-form {
  background: var(--paper); border-radius: var(--radius-lg); padding: 48px;
  box-shadow: var(--shadow-md); border: 1px solid rgba(11, 61, 46, 0.06);
}
.contact-form h3 { color: var(--pine); font-size: 24px; margin-bottom: 8px; }
.contact-form > p { font-size: 13.5px; color: var(--text-2); margin-bottom: 30px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 12.5px; color: var(--text-2); margin-bottom: 8px; letter-spacing: 0.08em; }
.field input, .field select, .field textarea {
  width: 100%; padding: 14px 16px; border-radius: 12px; border: 1.5px solid rgba(11, 61, 46, 0.14);
  font-size: 14px; font-family: inherit; background: var(--cream); color: var(--text);
  transition: border 0.3s, box-shadow 0.3s; outline: none;
}
.field input:focus, .field select:focus, .field textarea:focus {
  border-color: var(--gold); box-shadow: 0 0 0 4px rgba(201, 169, 97, 0.15);
}
.map-band { margin-top: 90px; border-radius: var(--radius-lg); overflow: hidden; position: relative; height: 380px; box-shadow: var(--shadow-lg); }
.map-bg { position: absolute; inset: 0; background: linear-gradient(140deg, #10382a, #071f17); }
.map-grid-lines {
  position: absolute; inset: 0; opacity: 0.25;
  background-image:
    linear-gradient(rgba(201, 169, 97, 0.35) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201, 169, 97, 0.35) 1px, transparent 1px);
  background-size: 56px 56px;
}
.map-pin {
  position: absolute; left: 50%; top: 44%; transform: translate(-50%, -50%);
  text-align: center; color: #fff; z-index: 3;
}
.map-pin i { font-style: normal; font-size: 44px; display: block; animation: bob 2.2s ease-in-out infinite; }
@keyframes bob { 50% { transform: translateY(-10px); } }
.map-pin b { display: block; margin-top: 10px; font-size: 17px; }
.map-pin span { font-size: 13px; color: var(--gold-2); }

/* ---------- 滚动显现动画 ---------- */
.reveal { opacity: 0; transform: translateY(56px); transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out); }
.reveal.in { opacity: 1; transform: translateY(0); }
.reveal-l { opacity: 0; transform: translateX(-64px); transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out); }
.reveal-l.in { opacity: 1; transform: translateX(0); }
.reveal-r { opacity: 0; transform: translateX(64px); transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out); }
.reveal-r.in { opacity: 1; transform: translateX(0); }
.reveal-scale { opacity: 0; transform: scale(0.86); transition: opacity 1s var(--ease-out), transform 1s var(--ease-out); }
.reveal-scale.in { opacity: 1; transform: scale(1); }
.d1 { transition-delay: 0.1s; } .d2 { transition-delay: 0.2s; }
.d3 { transition-delay: 0.3s; } .d4 { transition-delay: 0.4s; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .plans-grid, .mentor-grid, .values-grid { grid-template-columns: 1fr 1fr; }
  .course-grid { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 44px; }
  .about-teaser, .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero-card { display: none; }
}
@media (max-width: 680px) {
  .nav-links { display: none; }
  .plans-grid, .mentor-grid, .course-grid, .values-grid { grid-template-columns: 1fr; }
  .section { padding: 80px 0; }
  .diag-viewport { height: 500px; }
  .form-row { grid-template-columns: 1fr; }
}