/* ==========================================================================
   FENDICRO · 分迪科技 — 旗舰站设计系统
   定位：分迪科技旗下「药物设计 CRO」集团总站
   设计语言：科学编辑级 · 深墨 + 青 + 金细节 · 中文优先排印
   ========================================================================== */

/* ---------- 设计变量 ---------- */
:root {
  /* 墨色体系 */
  --ink:        #0A1A30;
  --ink-2:      #122A49;
  --ink-3:      #25405F;
  --ink-line:   rgba(255, 255, 255, 0.12);
  --ink-line-2: rgba(255, 255, 255, 0.22);

  /* 强调色 */
  --accent:      #0E9C86;   /* 主青 */
  --accent-deep: #07564A;
  --accent-soft: #E3F2EF;
  --accent-glow: rgba(14, 156, 134, 0.16);
  --gold:        #C19A4B;   /* 金，仅用于细线与极少装饰 */

  /* 纸色 / 中性 */
  --paper:      #F5F7F9;
  --paper-cool: #EFF2F5;
  --paper-warm: #FAF8F3;
  --white:      #FFFFFF;
  --line:       #E3E7EC;
  --line-soft:  #EDEFF2;

  /* 文本 */
  --text:      #15202E;
  --text-soft: #4A5568;
  --text-mute: #75808F;
  --on-ink:        #EAF0F6;
  --on-ink-soft:   #A9B7C8;
  --on-ink-mute:   #74849A;

  /* 字体 —— 仅西文 webfont，中文交系统字体 */
  --serif: "Fraunces", "Source Han Serif SC", "Noto Serif CJK SC", "Songti SC", "STSong", Georgia, serif;
  --sans:  "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Source Han Sans CN", "Noto Sans CJK SC", "Microsoft YaHei", "微软雅黑", sans-serif;
  --mono:  "JetBrains Mono", "SF Mono", "SFMono-Regular", ui-monospace, Menlo, Consolas, monospace;

  /* 尺寸 */
  --maxw:   1200px;
  --wide:   1340px;
  --narrow: 760px;

  /* 间距 */
  --sec:   clamp(76px, 9vw, 132px);
  --block: clamp(40px, 5vw, 76px);

  /* 圆角 / 阴影 */
  --r:      14px;
  --r-lg:   22px;
  --shadow:    0 1px 0 var(--line-soft), 0 18px 40px -24px rgba(10, 26, 48, 0.18);
  --shadow-lg: 0 28px 64px -28px rgba(10, 26, 48, 0.30);
}

/* ---------- 重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--sans);
  font-size: 16.5px;
  line-height: 1.72;
  color: var(--text);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "kern" 1, "liga" 1, "calt" 1;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
:lang(zh-CN) { font-feature-settings: "kern" 1, "palt" 1; }
img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color .2s ease, background .2s ease, border-color .2s ease, transform .2s ease; }
h1, h2, h3, h4 { margin: 0 0 .6em; line-height: 1.18; font-weight: 500; color: var(--ink); letter-spacing: -0.012em; }
p { margin: 0 0 1em; }
ul { margin: 0; padding: 0; list-style: none; }
::selection { background: var(--ink); color: var(--paper); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

/* ---------- 容器 ---------- */
.wrap        { max-width: var(--maxw); margin: 0 auto; padding: 0 32px; }
.wrap-wide   { max-width: var(--wide); margin: 0 auto; padding: 0 32px; }
.wrap-narrow { max-width: var(--narrow); margin: 0 auto; padding: 0 32px; }
@media (max-width: 600px) { .wrap, .wrap-wide, .wrap-narrow { padding: 0 22px; } }

/* ---------- 顶部细线（仪器风） ---------- */
.topline { height: 3px; background: var(--ink); border-bottom: 1px solid var(--accent); }

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow .25s ease, background .25s ease;
}
.site-header.is-stuck { box-shadow: 0 10px 30px -22px rgba(10, 26, 48, 0.5); }
.header-inner {
  max-width: var(--wide); margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  gap: 28px; padding: 15px 32px;
}
@media (max-width: 600px) { .header-inner { padding: 13px 22px; } }

/* 品牌 */
.brand { display: flex; align-items: center; gap: 13px; color: var(--ink); }
.brand-logo {
  width: 40px; height: 40px; flex: 0 0 40px;
  display: grid; place-items: center; border-radius: 11px;
  background: var(--ink); color: var(--white);
  font-family: var(--serif); font-weight: 600; font-size: 21px;
  box-shadow: inset 0 0 0 1px var(--ink-line-2);
}
.brand-logo span { transform: translateY(-1px); }
.brand-text { display: flex; flex-direction: column; line-height: 1.12; }
.brand-name { font-family: var(--serif); font-weight: 600; font-size: 21px; letter-spacing: .04em; color: var(--ink); }
.brand-sub  { font-size: 11px; letter-spacing: .12em; text-transform: uppercase; color: var(--text-mute); font-weight: 600; }

/* 导航 */
.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
  position: relative; display: block;
  padding: 9px 15px; font-size: 15px; font-weight: 500; color: var(--text-soft);
  border-radius: 9px;
}
.nav a::after {
  content: ""; position: absolute; left: 15px; right: 15px; bottom: 4px; height: 2px;
  background: var(--accent); border-radius: 2px; transform: scaleX(0); transform-origin: left;
  transition: transform .25s ease;
}
.nav a:hover { color: var(--ink); }
.nav a:hover::after, .nav a.is-active::after { transform: scaleX(1); }
.nav a.is-active { color: var(--ink); }

.header-right { display: flex; align-items: center; gap: 14px; }
.header-cta {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 10px 20px; border-radius: 999px;
  background: var(--ink); color: var(--white);
  font-size: 14.5px; font-weight: 600;
  box-shadow: 0 10px 24px -14px rgba(10, 26, 48, 0.8);
}
.header-cta:hover { background: var(--accent-deep); color: var(--white); transform: translateY(-1px); }

/* 汉堡 */
.menu-toggle {
  display: none; width: 44px; height: 40px; border: 1px solid var(--line);
  border-radius: 10px; background: var(--white); cursor: pointer;
  align-items: center; justify-content: center; flex-direction: column; gap: 4px;
}
.menu-toggle span { display: block; width: 18px; height: 2px; background: var(--ink); border-radius: 2px; transition: transform .25s, opacity .2s; }
.menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

@media (max-width: 940px) {
  .menu-toggle { display: flex; }
  /* 贴 header 下方的全宽下拉面板：left/right:0 杜绝横向溢出 */
  .nav {
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--white); padding: 6px 22px 18px;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 28px 44px -30px rgba(10, 26, 48, 0.55);
    transform: translateY(-12px); opacity: 0; visibility: hidden;
    transition: opacity .26s ease, transform .26s ease, visibility .26s;
    max-height: calc(100dvh - 100%); overflow-y: auto; z-index: 95;
  }
  .nav.is-open { transform: translateY(0); opacity: 1; visibility: visible; }
  .nav a { padding: 15px 6px; font-size: 17px; color: var(--ink); border-bottom: 1px solid var(--line-soft); border-radius: 0; }
  .nav a:last-child { border-bottom: 0; }
  .nav a::after { display: none; }
  .header-cta { display: none; }
  .nav-backdrop { position: fixed; inset: 0; background: rgba(10, 26, 48, 0.28); opacity: 0; visibility: hidden; transition: opacity .3s; z-index: 90; }
  .nav-backdrop.is-open { opacity: 1; visibility: visible; }
}

/* ==========================================================================
   通用：段落标题 / 按钮 / 杂项
   ========================================================================== */
.eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: 12.5px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase;
  color: var(--accent-deep);
}
.eyebrow::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px var(--accent-glow); }
.eyebrow.on-ink { color: var(--accent); }

.sec-head { max-width: 760px; margin-bottom: clamp(40px, 5vw, 64px); }
.sec-num {
  font-family: var(--mono); font-size: 12.5px; letter-spacing: .16em; color: var(--text-mute);
  text-transform: uppercase; margin-bottom: 18px; display: flex; align-items: center; gap: 12px;
}
.sec-num::after { content: ""; flex: 1; height: 1px; background: var(--line); max-width: 120px; }
.sec-title { font-family: var(--serif); font-weight: 500; font-size: clamp(28px, 4vw, 44px); line-height: 1.16; }
.sec-sub { margin-top: 18px; color: var(--text-soft); font-size: 17px; line-height: 1.8; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 26px; border-radius: 999px; font-weight: 600; font-size: 15.5px;
  border: 1px solid transparent; cursor: pointer; white-space: nowrap;
}
.btn-primary { background: var(--accent); color: var(--white); box-shadow: 0 14px 30px -16px rgba(14,156,134,.85); }
.btn-primary:hover { background: var(--accent-deep); color: var(--white); transform: translateY(-2px); }
.btn-ink { background: var(--ink); color: var(--white); }
.btn-ink:hover { background: var(--ink-2); color: var(--white); transform: translateY(-2px); }
.btn-outline { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-outline:hover { border-color: var(--ink); color: var(--ink); transform: translateY(-2px); }
.btn-outline.on-ink { color: var(--on-ink); border-color: var(--ink-line-2); }
.btn-outline.on-ink:hover { border-color: var(--accent); color: var(--white); background: rgba(255,255,255,.04); }
.btn-link { color: var(--ink); font-weight: 600; padding: 13px 6px; }
.btn-link:hover { color: var(--accent-deep); }
.btn-link.on-ink { color: var(--on-ink); }
.btn-link.on-ink:hover { color: var(--accent); }

.link-arrow { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; color: var(--accent-deep); font-size: 15px; }
.link-arrow:hover { gap: 10px; color: var(--accent-deep); }

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  position: relative; overflow: hidden;
  background: radial-gradient(120% 130% at 82% 8%, #163358 0%, var(--ink) 46%, #07101f 100%);
  color: var(--on-ink);
  padding: clamp(72px, 11vw, 132px) 0 clamp(60px, 8vw, 104px);
}
.hero-bg { position: absolute; inset: 0; width: 100%; height: 100%; color: #34507a; opacity: .9; pointer-events: none; }
.hero-inner { position: relative; max-width: var(--wide); margin: 0 auto; padding: 0 32px; }
@media (max-width: 600px) { .hero-inner { padding: 0 22px; } }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: clamp(40px, 5vw, 72px); align-items: center; }
@media (max-width: 920px) { .hero-grid { grid-template-columns: 1fr; gap: 48px; } }

.hero h1 {
  font-family: var(--serif); font-weight: 500; color: var(--white);
  font-size: clamp(38px, 6vw, 68px); line-height: 1.08; letter-spacing: -0.02em;
  margin: 22px 0 0;
}
.hero h1 .accent { color: var(--accent); }
.hero-sub { margin-top: 26px; max-width: 540px; font-size: 18px; line-height: 1.84; color: var(--on-ink-soft); }
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }

/* hero 卡片簇 */
.hero-card {
  background: linear-gradient(180deg, rgba(255,255,255,.07), rgba(255,255,255,.02));
  border: 1px solid var(--ink-line); border-radius: var(--r-lg);
  padding: 26px; backdrop-filter: blur(6px);
}
.hero-card-tag { font-family: var(--mono); font-size: 11.5px; letter-spacing: .14em; color: var(--accent); text-transform: uppercase; }
.hero-card-name { font-family: var(--serif); font-size: 34px; color: var(--white); margin: 10px 0 4px; letter-spacing: .01em; }
.hero-card-desc { color: var(--on-ink-soft); font-size: 14.5px; margin-bottom: 18px; }
.hero-card dl { display: grid; grid-template-columns: auto 1fr; gap: 9px 16px; margin: 0; font-size: 14px; }
.hero-card dt { color: var(--on-ink-mute); }
.hero-card dd { margin: 0; color: var(--on-ink); text-align: right; font-weight: 500; }
.hero-mini { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 14px; }
.hero-mini .m {
  border: 1px solid var(--ink-line); border-radius: var(--r); padding: 16px 16px;
  background: rgba(255,255,255,.03);
}
.hero-mini .m b { display: block; font-family: var(--serif); font-size: 23px; color: var(--white); line-height: 1; }
.hero-mini .m span { display: block; margin-top: 7px; font-size: 12.5px; color: var(--on-ink-soft); line-height: 1.5; }

/* 能力条 */
.capbar { border-top: 1px solid var(--ink-line); margin-top: clamp(48px, 6vw, 72px); padding-top: 26px; }
.capbar-label { font-size: 12.5px; letter-spacing: .12em; text-transform: uppercase; color: var(--on-ink-mute); margin-bottom: 14px; }
.capbar-items { display: flex; flex-wrap: wrap; gap: 10px 12px; }
.capbar-items span {
  font-family: var(--mono); font-size: 13px; color: var(--on-ink);
  padding: 7px 14px; border: 1px solid var(--ink-line); border-radius: 999px; background: rgba(255,255,255,.03);
}
.capbar-items span b { color: var(--accent); font-weight: 600; }

/* ==========================================================================
   Sections
   ========================================================================== */
section { position: relative; }
.band { padding: var(--sec) 0; }
.band-paper { background: var(--paper); }
.band-cool  { background: var(--paper-cool); }
.band-ink   { background: var(--ink); color: var(--on-ink); }
.band-ink .sec-title, .band-ink h3, .band-ink h4 { color: var(--white); }
.band-ink .sec-sub { color: var(--on-ink-soft); }

/* 四大板块导览 */
.pillars { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
@media (max-width: 760px) { .pillars { grid-template-columns: 1fr; } }
.pillar {
  position: relative; display: flex; flex-direction: column;
  padding: 30px 30px 26px; border: 1px solid var(--line); border-radius: var(--r-lg);
  background: var(--white); box-shadow: var(--shadow); overflow: hidden; min-height: 220px;
}
.pillar::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; background: var(--accent); transform: scaleY(0); transform-origin: top; transition: transform .3s ease; }
.pillar:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: #D2DAE2; }
.pillar:hover::before { transform: scaleY(1); }
.pillar-idx { font-family: var(--mono); font-size: 12.5px; letter-spacing: .14em; color: var(--accent-deep); }
.pillar h3 { font-family: var(--serif); font-size: 25px; margin: 14px 0 10px; }
.pillar p { color: var(--text-soft); font-size: 15px; margin: 0 0 20px; flex: 1; }
.pillar .link-arrow { margin-top: auto; }

/* 服务卡片网格 */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
@media (max-width: 920px) { .cards { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .cards { grid-template-columns: 1fr; } }
.card {
  display: flex; flex-direction: column; padding: 28px 26px;
  border: 1px solid var(--line); border-radius: var(--r); background: var(--white);
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: #D2DAE2; }
.card-num { font-family: var(--mono); font-size: 12px; letter-spacing: .12em; color: var(--text-mute); text-transform: uppercase; }
.card h3 { font-size: 19.5px; margin: 14px 0 9px; }
.card p { color: var(--text-soft); font-size: 14.5px; margin: 0 0 18px; flex: 1; }
.card .link-arrow { margin-top: auto; }

/* 平台模块 */
.modules { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
@media (max-width: 820px) { .modules { grid-template-columns: 1fr; } }
.module {
  padding: 28px 26px; border: 1px solid var(--ink-line); border-radius: var(--r);
  background: rgba(255,255,255,.03);
}
.module-num { font-family: var(--mono); font-size: 12px; letter-spacing: .14em; color: var(--accent); text-transform: uppercase; }
.module h4 { font-family: var(--serif); font-size: 21px; color: var(--white); margin: 13px 0 10px; }
.module p { color: var(--on-ink-soft); font-size: 14.5px; margin: 0; }

/* 差异化 / 要点列 */
.points { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 56px; }
@media (max-width: 760px) { .points { grid-template-columns: 1fr; } }
.point { padding: 26px 0; border-top: 1px solid var(--line); display: grid; grid-template-columns: auto 1fr; gap: 20px; }
.point-no { font-family: var(--mono); font-size: 13px; color: var(--accent-deep); padding-top: 4px; }
.point h4 { font-size: 19px; margin: 0 0 8px; }
.point p { color: var(--text-soft); font-size: 14.5px; margin: 0; }

/* 数据条 */
.stats-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; }
@media (max-width: 760px) { .stats-row { grid-template-columns: repeat(2, 1fr); } }
.stat-cell { background: var(--white); padding: 28px 24px; }
.band-ink .stats-row { background: var(--ink-line); border-color: var(--ink-line); }
.band-ink .stat-cell { background: transparent; }
.stat-cell b { font-family: var(--serif); font-size: clamp(30px, 4vw, 42px); color: var(--ink); line-height: 1; display: block; }
.band-ink .stat-cell b { color: var(--white); }
.stat-cell b small { font-size: .5em; color: var(--accent-deep); margin-left: 2px; }
.band-ink .stat-cell b small { color: var(--accent); }
.stat-cell span { display: block; margin-top: 12px; font-size: 14px; color: var(--text-soft); }
.band-ink .stat-cell span { color: var(--on-ink-soft); }

/* 客户分层 */
.tiers { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
@media (max-width: 820px) { .tiers { grid-template-columns: 1fr; } }
.tier { padding: 30px 28px; border: 1px solid var(--line); border-radius: var(--r-lg); background: var(--white); box-shadow: var(--shadow); }
.tier-tag { font-family: var(--mono); font-size: 11.5px; letter-spacing: .12em; color: var(--accent-deep); text-transform: uppercase; }
.tier h3 { font-size: 20px; margin: 14px 0 12px; }
.tier p { color: var(--text-soft); font-size: 14.5px; margin: 0; }

/* 流程时间线 */
.flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; counter-reset: step; }
@media (max-width: 820px) { .flow { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .flow { grid-template-columns: 1fr; } }
.flow-step { position: relative; padding: 28px 22px; border: 1px solid var(--line); border-radius: var(--r); background: var(--white); }
.flow-step::before { counter-increment: step; content: counter(step, decimal-leading-zero); font-family: var(--mono); font-size: 13px; color: var(--accent-deep); letter-spacing: .1em; }
.flow-step h4 { font-size: 17.5px; margin: 12px 0 8px; }
.flow-step p { color: var(--text-soft); font-size: 13.5px; margin: 0; }

/* 通用列表（带勾） */
.checklist { display: grid; gap: 14px; }
.checklist li { position: relative; padding-left: 30px; color: var(--text-soft); font-size: 15px; }
.checklist li::before {
  content: ""; position: absolute; left: 0; top: 8px; width: 16px; height: 16px;
  border-radius: 50%; background: var(--accent-soft);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='none' stroke='%2307564A' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round' d='M2.5 6.2l2.2 2.3L9.5 3.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: center;
}
.checklist li b { color: var(--text); font-weight: 600; }

/* 两栏内容 */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(36px, 5vw, 64px); align-items: center; }
@media (max-width: 820px) { .split { grid-template-columns: 1fr; gap: 36px; } }

/* 资产卡（深色） */
.asset {
  background: radial-gradient(120% 120% at 80% 0%, var(--ink-2), var(--ink) 70%);
  color: var(--on-ink); border-radius: var(--r-lg); padding: 34px;
  border: 1px solid var(--ink-line);
}
.asset-tag { font-family: var(--mono); font-size: 11.5px; letter-spacing: .14em; color: var(--accent); text-transform: uppercase; }
.asset-name { font-family: var(--serif); font-size: 46px; color: var(--white); margin: 10px 0 4px; }
.asset-desc { color: var(--on-ink-soft); margin-bottom: 24px; }
.asset dl { display: grid; grid-template-columns: auto 1fr; gap: 12px 18px; margin: 0; padding-top: 22px; border-top: 1px solid var(--ink-line); font-size: 15px; }
.asset dt { color: var(--on-ink-mute); }
.asset dd { margin: 0; text-align: right; color: var(--white); font-weight: 500; }

/* ==========================================================================
   页面级 hero（内页用，浅色）
   ========================================================================== */
.page-hero {
  background: linear-gradient(180deg, var(--paper), var(--white));
  border-bottom: 1px solid var(--line);
  padding: clamp(56px, 7vw, 92px) 0 clamp(40px, 5vw, 64px);
}
.page-hero h1 { font-family: var(--serif); font-weight: 500; font-size: clamp(34px, 5vw, 56px); line-height: 1.12; margin: 20px 0 0; }
.page-hero p { margin-top: 20px; max-width: 620px; color: var(--text-soft); font-size: 18px; line-height: 1.8; }
.crumb { font-size: 13.5px; color: var(--text-mute); }
.crumb a:hover { color: var(--accent-deep); }

/* ==========================================================================
   CTA band
   ========================================================================== */
.cta {
  position: relative; overflow: hidden;
  background: radial-gradient(120% 140% at 18% 10%, #163358, var(--ink) 55%, #07101f);
  color: var(--on-ink);
  padding: clamp(60px, 8vw, 104px) 0;
}
.cta-inner { position: relative; text-align: center; max-width: 720px; margin: 0 auto; }
.cta h2 { font-family: var(--serif); font-weight: 500; color: var(--white); font-size: clamp(28px, 4vw, 46px); line-height: 1.18; }
.cta p { color: var(--on-ink-soft); font-size: 17.5px; margin: 18px auto 30px; max-width: 560px; }
.cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.cta-bg { position: absolute; inset: 0; opacity: .5; color: #3a5680; }

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer { background: var(--ink); color: var(--on-ink-soft); padding: clamp(56px, 7vw, 84px) 0 32px; }
.footer-top { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 44px; border-bottom: 1px solid var(--ink-line); }
@media (max-width: 880px) { .footer-top { grid-template-columns: 1fr 1fr; gap: 32px; } }
@media (max-width: 520px) { .footer-top { grid-template-columns: 1fr; } }
.footer-brand .brand-name { color: var(--white); }
.footer-brand .brand-sub { color: var(--on-ink-mute); }
.footer-brand p { margin-top: 16px; max-width: 320px; font-size: 14px; color: var(--on-ink-soft); line-height: 1.74; }
.footer-col h4 { font-size: 13px; letter-spacing: .1em; text-transform: uppercase; color: var(--on-ink-mute); margin: 0 0 18px; font-weight: 700; }
.footer-col li { margin-bottom: 11px; font-size: 14.5px; }
.footer-col a { color: var(--on-ink-soft); }
.footer-col a:hover { color: var(--accent); }
.footer-bottom { display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; align-items: center; padding-top: 26px; font-size: 13px; color: var(--on-ink-mute); }
.footer-bottom a:hover { color: var(--accent); }
.footer-legal { display: flex; gap: 18px; flex-wrap: wrap; }

/* ==========================================================================
   动效（reveal）
   ========================================================================== */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s cubic-bezier(.2,.7,.2,1), transform .7s cubic-bezier(.2,.7,.2,1); }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .08s; }
.reveal.d2 { transition-delay: .16s; }
.reveal.d3 { transition-delay: .24s; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } html { scroll-behavior: auto; } }

/* 杂项 */
.mt-cta { margin-top: clamp(40px, 5vw, 60px); text-align: center; }
.lede { font-size: 19px; line-height: 1.85; color: var(--text-soft); }
.prose p { color: var(--text-soft); font-size: 16.5px; line-height: 1.85; }
.prose h3 { font-family: var(--serif); font-size: 24px; margin: 36px 0 14px; }
.tag-note { font-size: 13.5px; color: var(--text-mute); border-left: 2px solid var(--gold); padding-left: 14px; margin-top: 22px; line-height: 1.7; }