/* ============================================================
   智彤韦业 · 企业官网样式
   设计语言：简约大气 / 科学严谨 / 专业可信
   ============================================================ */

:root {
  --navy: #042c53;
  --navy-600: #0a4478;
  --navy-700: #06325f;
  --navy-bg: #e6f1fb;
  --navy-line: #b5d4f4;

  --teal: #0f6e56;
  --teal-600: #0a5a46;
  --teal-bg: #e1f5ee;
  --teal-line: #9fe1cb;

  --coral: #993c1d;
  --coral-bg: #faece7;
  --coral-line: #f5c4b3;

  --amber: #854f0b;
  --amber-bg: #faeeda;
  --amber-line: #fac775;

  --ink: #1a1a1a;
  --muted: #5f5e5a;
  --muted-2: #8a887f;
  --line: #e6e4dd;
  --line-strong: #d6d3c9;
  --bg: #ffffff;
  --bg-soft: #f7f8fa;
  --bg-warm: #f2f1ec;

  --radius: 14px;
  --radius-sm: 9px;
  --radius-lg: 22px;
  --shadow-sm: 0 1px 2px rgba(4, 44, 83, 0.05), 0 1px 6px rgba(4, 44, 83, 0.06);
  --shadow-md: 0 6px 24px rgba(4, 44, 83, 0.08);
  --shadow-lg: 0 18px 48px rgba(4, 44, 83, 0.12);
  --maxw: 1180px;
  --nav-h: 68px;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

/* ---------- 通用按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 26px; border-radius: 999px; font-size: 15px; font-weight: 600;
  border: 1px solid transparent; cursor: pointer; transition: all 0.22s ease;
  white-space: nowrap; line-height: 1.2; font-family: inherit;
}
.btn-primary { background: var(--navy); color: #fff; }
.btn-primary:hover { background: var(--navy-600); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-teal { background: var(--teal); color: #fff; }
.btn-teal:hover { background: var(--teal-600); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-ghost { background: transparent; color: var(--navy); border-color: var(--line-strong); }
.btn-ghost:hover { border-color: var(--navy); background: var(--navy-bg); }
.btn-light { background: #fff; color: var(--navy); }
.btn-light:hover { background: var(--navy-bg); transform: translateY(-1px); }
.btn-lg { padding: 15px 34px; font-size: 16px; }
.btn-sm { padding: 9px 18px; font-size: 14px; }
.btn-block { width: 100%; }
.btn:disabled { opacity: 0.55; cursor: not-allowed; transform: none; }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { height: var(--nav-h); display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { display: flex; align-items: center; gap: 11px; }
.brand .mark { width: 36px; height: 36px; flex-shrink: 0; }
.brand .brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand .brand-name { font-size: 17px; font-weight: 700; color: var(--navy); letter-spacing: 0.5px; }
.brand .brand-sub { font-size: 10.5px; color: var(--muted-2); letter-spacing: 1px; }

.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a {
  padding: 8px 16px; border-radius: 8px; font-size: 15px; font-weight: 500;
  color: var(--muted); transition: all 0.18s ease; position: relative;
}
.nav-links a:hover { color: var(--navy); background: var(--bg-soft); }
.nav-links a.active { color: var(--navy); font-weight: 600; }
.nav-links a.active::after {
  content: ""; position: absolute; left: 16px; right: 16px; bottom: 3px;
  height: 2px; border-radius: 2px; background: var(--teal);
}
.nav-actions { display: flex; align-items: center; gap: 10px; }

.lang-toggle {
  display: inline-flex; align-items: center; padding: 7px 14px; border-radius: 8px;
  font-size: 13px; font-weight: 600; letter-spacing: 0.5px; color: var(--navy);
  border: 1px solid var(--line); background: #fff; transition: all 0.18s ease; text-decoration: none;
}
.lang-toggle:hover { color: var(--teal); border-color: var(--teal); }

.nav-toggle {
  display: none; width: 42px; height: 42px; border: 1px solid var(--line);
  background: #fff; border-radius: 9px; cursor: pointer; align-items: center;
  justify-content: center; flex-direction: column; gap: 5px;
}
.nav-toggle span { width: 20px; height: 2px; background: var(--navy); border-radius: 2px; transition: all 0.2s; }

@media (max-width: 860px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: fixed; top: var(--nav-h); left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--line);
    flex-direction: column; align-items: stretch; padding: 12px 20px 20px;
    gap: 4px; transform: translateY(-8px); opacity: 0; pointer-events: none;
    transition: all 0.2s ease; box-shadow: var(--shadow-md);
  }
  .nav-links.open {
    transform: translateY(0); opacity: 1; pointer-events: auto;
  }
  .nav-links a { padding: 13px 12px; font-size: 16px; }
  .nav-links a.active::after { display: none; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(1200px 600px at 85% -10%, rgba(15, 110, 86, 0.10), transparent 60%),
    radial-gradient(1000px 500px at -10% 10%, rgba(4, 44, 83, 0.08), transparent 55%),
    linear-gradient(180deg, #fbfcfe 0%, #ffffff 100%);
}
.hero-inner { padding: 96px 24px 80px; max-width: var(--maxw); margin: 0 auto; position: relative; }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 15px; border-radius: 999px; background: var(--navy-bg);
  color: var(--navy-600); font-size: 13px; font-weight: 600; margin-bottom: 26px;
}
.hero-eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--teal); }
.hero h1 {
  font-size: clamp(32px, 5vw, 54px); line-height: 1.18; font-weight: 700;
  letter-spacing: -0.5px; color: var(--ink); max-width: 820px;
}
.hero h1 .accent { color: var(--navy); }
.hero h1 .teal { color: var(--teal); }
.hero-sub {
  font-size: clamp(16px, 2vw, 19px); color: var(--muted); max-width: 660px;
  margin: 22px 0 34px; line-height: 1.75;
}
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-stats {
  display: flex; flex-wrap: wrap; gap: 14px; margin-top: 56px;
}
.hero-stat {
  flex: 1; min-width: 160px; padding: 20px 22px; border-radius: var(--radius);
  background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow-sm);
}
.hero-stat .num { font-size: 30px; font-weight: 700; color: var(--navy); line-height: 1; letter-spacing: -0.5px; }
.hero-stat .num small { font-size: 16px; font-weight: 600; }
.hero-stat .label { font-size: 13px; color: var(--muted-2); margin-top: 7px; }

/* ---------- 区块通用 ---------- */
.section { padding: 88px 0; }
.section-soft { background: var(--bg-soft); }
.section-warm { background: var(--bg-warm); }
.sec-head { max-width: 720px; margin: 0 auto 54px; text-align: center; }
.sec-head.left { margin-left: 0; text-align: left; }
.sec-kicker {
  display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 700;
  letter-spacing: 2px; color: var(--teal); text-transform: uppercase; margin-bottom: 16px;
}
.sec-kicker::before { content: ""; width: 26px; height: 2px; background: var(--teal); border-radius: 2px; }
.sec-title { font-size: clamp(26px, 3.4vw, 38px); font-weight: 700; line-height: 1.25; letter-spacing: -0.3px; color: var(--ink); }
.sec-desc { font-size: 16.5px; color: var(--muted); margin-top: 16px; line-height: 1.75; }

/* ---------- 卡片网格 ---------- */
.grid { display: grid; gap: 22px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 960px) { .grid-4 { grid-template-columns: repeat(2, 1fr); } .grid-3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 28px; transition: all 0.25s ease; position: relative; overflow: hidden;
}
.card:hover { box-shadow: var(--shadow-md); border-color: var(--line-strong); transform: translateY(-3px); }
.card .icon {
  width: 50px; height: 50px; border-radius: 12px; display: flex; align-items: center;
  justify-content: center; font-size: 22px; font-weight: 700; margin-bottom: 20px;
}
.card h3 { font-size: 19px; font-weight: 700; color: var(--ink); margin-bottom: 10px; }
.card p { font-size: 15px; color: var(--muted); line-height: 1.7; }
.card .card-link { display: inline-flex; align-items: center; gap: 5px; margin-top: 18px; font-size: 14px; font-weight: 600; color: var(--navy); }
.card .card-link:hover { color: var(--teal); }

.icon-navy { background: var(--navy-bg); color: var(--navy); }
.icon-teal { background: var(--teal-bg); color: var(--teal); }
.icon-coral { background: var(--coral-bg); color: var(--coral); }
.icon-amber { background: var(--amber-bg); color: var(--amber); }

/* 整卡片链接（引导卡） */
a.card-link {
  display: block; text-decoration: none; color: inherit;
}
a.card-link:hover { color: inherit; }
.card-link .link-more {
  display: inline-flex; align-items: center; gap: 5px; margin-top: 18px;
  font-size: 14px; font-weight: 600; color: var(--navy);
}
a.card-link:hover .link-more { color: var(--teal); }

/* 竞争优势横幅 */
.banner-adv {
  margin-top: 28px; background: var(--navy); color: #fff; border-radius: var(--radius);
  padding: 26px 30px; display: flex; gap: 16px; align-items: flex-start;
}
.banner-adv .bic { font-size: 24px; font-weight: 700; color: #fff; flex-shrink: 0; line-height: 1.3; }
.banner-adv .bt { font-size: 18px; font-weight: 600; }
.banner-adv .bd { font-size: 14.5px; color: #cfe0f2; margin-top: 6px; line-height: 1.7; }

/* ---------- 四维观念 ---------- */
.dims { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
@media (max-width: 900px) { .dims { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .dims { grid-template-columns: 1fr; } }
.dim {
  border-radius: var(--radius); padding: 26px 22px; border: 1px solid var(--line);
  background: #fff; transition: transform 0.22s ease;
}
.dim:hover { transform: translateY(-3px); }
.dim .dkey {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px; border-radius: 11px; font-size: 20px; font-weight: 700; margin-bottom: 16px;
}
.dim .dname { font-size: 19px; font-weight: 700; margin-bottom: 8px; }
.dim .dsub { font-size: 14px; color: var(--muted); line-height: 1.65; }
.dim.s { background: var(--coral-bg); border-color: var(--coral-line); } .dim.s .dkey { background: #fff; color: var(--coral); } .dim.s .dname { color: var(--coral); }
.dim.c { background: var(--amber-bg); border-color: var(--amber-line); } .dim.c .dkey { background: #fff; color: var(--amber); } .dim.c .dname { color: var(--amber); }
.dim.e { background: var(--teal-bg); border-color: var(--teal-line); } .dim.e .dkey { background: #fff; color: var(--teal); } .dim.e .dname { color: var(--teal); }
.dim.v { background: var(--navy-bg); border-color: var(--navy-line); } .dim.v .dkey { background: #fff; color: var(--navy); } .dim.v .dname { color: var(--navy); }

/* ---------- B0-B5 阶梯 ---------- */
.ladder { display: flex; gap: 10px; align-items: stretch; }
@media (max-width: 720px) { .ladder { flex-wrap: wrap; } .ladder .rung { flex: 1 1 30%; } }
.rung {
  flex: 1; border-radius: var(--radius-sm); padding: 22px 12px 18px; text-align: center;
  border: 1px solid var(--line); background: #fff; transition: all 0.22s ease;
}
.rung .b { font-size: 22px; font-weight: 800; color: var(--navy); }
.rung .t { font-size: 13px; color: var(--muted); margin-top: 6px; }
.rung .d { font-size: 11.5px; color: var(--muted-2); margin-top: 8px; line-height: 1.5; }
.rung.strong { background: var(--navy); border-color: var(--navy); }
.rung.strong .b { color: #fff; }
.rung.strong .t { color: #cfe0f2; }
.rung.strong .d { color: #9fbddc; }

/* ---------- 流程 ---------- */
.flow { display: flex; align-items: stretch; gap: 0; }
@media (max-width: 760px) { .flow { flex-direction: column; } .flow .arrow { transform: rotate(90deg); } }
.flow .step {
  flex: 1; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 20px; background: #fff;
}
.flow .step .sn { font-size: 12px; font-weight: 700; letter-spacing: 1px; color: var(--muted-2); text-transform: uppercase; }
.flow .step .sv { font-size: 16px; font-weight: 700; margin-top: 8px; color: var(--ink); }
.flow .step .sd { font-size: 13.5px; color: var(--muted); margin-top: 8px; }
.flow .arrow {
  width: 42px; display: flex; align-items: center; justify-content: center;
  color: var(--line-strong); font-size: 22px; flex-shrink: 0;
}

/* ---------- 合规红线 ---------- */
.rules-panel {
  background: var(--navy-bg); border: 1px solid var(--navy-line); border-radius: var(--radius-lg);
  padding: 36px 34px;
}
.rules-panel h3 { font-size: 20px; font-weight: 700; color: var(--navy); margin-bottom: 22px; display: flex; align-items: center; gap: 10px; }
.rules-panel ol { counter-reset: rule; display: flex; flex-direction: column; gap: 16px; }
.rules-panel li {
  counter-increment: rule; display: flex; gap: 16px; align-items: flex-start;
  font-size: 15.5px; color: var(--ink); line-height: 1.7;
}
.rules-panel li::before {
  content: counter(rule); flex-shrink: 0; width: 30px; height: 30px; border-radius: 50%;
  background: var(--navy); color: #fff; font-size: 14px; font-weight: 700;
  display: flex; align-items: center; justify-content: center; margin-top: 1px;
}

/* ---------- 理论卡片 ---------- */
.theory { border: 1px solid var(--line); border-radius: var(--radius); padding: 30px 28px; background: #fff; }
.theory .th-head { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; margin-bottom: 12px; }
.theory .th-name { font-size: 21px; font-weight: 700; color: var(--navy); }
.theory .th-sub { font-size: 13px; color: var(--muted-2); font-style: italic; }
.theory .th-desc { font-size: 15px; color: var(--muted); line-height: 1.75; margin-bottom: 20px; }
.theory .th-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 620px) { .theory .th-pair { grid-template-columns: 1fr; } }
.theory .th-box { border-radius: var(--radius-sm); padding: 18px 20px; border: 1px solid var(--line); }
.theory .th-box b { display: block; font-size: 15.5px; margin-bottom: 5px; }
.theory .th-box span { font-size: 14px; color: var(--muted); }
.theory .hygiene { background: var(--coral-bg); border-color: var(--coral-line); }
.theory .hygiene b { color: var(--coral); }
.theory .motiv { background: var(--teal-bg); border-color: var(--teal-line); }
.theory .motiv b { color: var(--teal); }

/* ---------- 关于我们 / 团队 ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
@media (max-width: 900px) { .split { grid-template-columns: 1fr; gap: 40px; } }
.split .lead { font-size: 17px; line-height: 1.8; color: var(--ink); }
.split .lead p + p { margin-top: 16px; }
.checklist { margin-top: 26px; display: flex; flex-direction: column; gap: 14px; }
.checklist li { display: flex; gap: 12px; align-items: flex-start; font-size: 15.5px; color: var(--ink); }
.checklist li .ck {
  flex-shrink: 0; width: 24px; height: 24px; border-radius: 50%; background: var(--teal-bg);
  color: var(--teal); font-size: 14px; display: flex; align-items: center; justify-content: center; margin-top: 2px;
}

.founders { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; align-items: start; }
@media (max-width: 980px) { .founders { grid-template-columns: 1fr; } }
.founder { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 32px 28px; }
.founder .name { font-size: 21px; font-weight: 700; color: var(--ink); margin-bottom: 4px; }
.founder .role { font-size: 13px; font-weight: 700; color: var(--teal); margin-bottom: 12px; }
.founder .exp { font-size: 14px; color: var(--muted-2); margin-bottom: 14px; line-height: 1.6; }
.founder .bio-list { display: flex; flex-direction: column; gap: 9px; }
.founder .bio-list li { font-size: 13.5px; color: var(--muted); line-height: 1.65; padding-left: 16px; position: relative; }
.founder .bio-list li::before { content: ""; position: absolute; left: 0; top: 9px; width: 6px; height: 6px; border-radius: 50%; background: var(--teal); }
.founder .tags { display: flex; flex-wrap: wrap; gap: 8px; }
.founder .tags span { font-size: 12.5px; padding: 5px 12px; border-radius: 999px; background: var(--bg-soft); border: 1px solid var(--line); color: var(--muted); }

/* ---------- 时间线 ---------- */
.timeline { display: flex; flex-direction: column; gap: 0; position: relative; padding-left: 34px; }
.timeline::before { content: ""; position: absolute; left: 9px; top: 8px; bottom: 8px; width: 2px; background: var(--line-strong); }
.tl-item { position: relative; padding-bottom: 34px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: ""; position: absolute; left: -30px; top: 5px; width: 14px; height: 14px;
  border-radius: 50%; background: #fff; border: 3px solid var(--teal);
}
.tl-item .tl-y { font-size: 13px; font-weight: 700; color: var(--teal); letter-spacing: 1px; }
.tl-item .tl-t { font-size: 17px; font-weight: 700; margin: 4px 0 6px; }
.tl-item .tl-d { font-size: 14.5px; color: var(--muted); }

/* ---------- 联系我们 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 44px; align-items: start; }
@media (max-width: 900px) { .contact-grid { grid-template-columns: 1fr; } }
.contact-info { display: flex; flex-direction: column; gap: 18px; }
.contact-item { display: flex; gap: 16px; align-items: flex-start; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.contact-item .ci-icon { width: 44px; height: 44px; border-radius: 11px; background: var(--navy-bg); color: var(--navy); display: flex; align-items: center; justify-content: center; flex-shrink: 0; font-size: 18px; }
.contact-item .ci-label { font-size: 13px; color: var(--muted-2); font-weight: 600; }
.contact-item .ci-value { font-size: 15.5px; color: var(--ink); margin-top: 3px; }

.form-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 36px 34px; box-shadow: var(--shadow-sm); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 560px) { .form-row { grid-template-columns: 1fr; } }
.field { margin-bottom: 20px; }
.field label { display: block; font-size: 14px; font-weight: 600; color: var(--ink); margin-bottom: 8px; }
.field label .req { color: var(--coral); }
.field input, .field textarea, .field select {
  width: 100%; padding: 13px 16px; border: 1px solid var(--line-strong); border-radius: var(--radius-sm);
  font-size: 15px; font-family: inherit; color: var(--ink); background: #fff; transition: all 0.18s ease;
}
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none; border-color: var(--navy); box-shadow: 0 0 0 3px rgba(4, 44, 83, 0.08);
}
.field textarea { resize: vertical; min-height: 120px; }
.field .hint { font-size: 12.5px; color: var(--muted-2); margin-top: 6px; }

/* ---------- 表单提示 ---------- */
.form-msg { display: none; padding: 13px 16px; border-radius: var(--radius-sm); font-size: 14px; margin-bottom: 18px; line-height: 1.6; }
.form-msg.show { display: block; }
.form-msg.success { background: var(--teal-bg); color: var(--teal-600); border: 1px solid var(--teal-line); }
.form-msg.error { background: var(--coral-bg); color: var(--coral); border: 1px solid var(--coral-line); }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--navy); color: #cfe0f2; padding: 64px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.2fr; gap: 40px; margin-bottom: 44px; }
@media (max-width: 900px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-brand .brand-name { color: #fff; font-size: 19px; font-weight: 700; margin-bottom: 12px; }
.footer-brand p { font-size: 14px; line-height: 1.75; color: #9fbddc; max-width: 320px; }
.footer-col h4 { color: #fff; font-size: 14px; font-weight: 700; letter-spacing: 1px; margin-bottom: 18px; }
.footer-col a, .footer-col span { display: block; font-size: 14px; color: #9fbddc; padding: 6px 0; transition: color 0.18s; }
.footer-col a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.12); padding-top: 24px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; font-size: 13px; color: #7fa3c4; }
.footer-bottom a { color: #9fbddc; }
.footer-bottom a:hover { color: #fff; }

/* ---------- 页面页眉（子页 hero） ---------- */
.page-hero { background: linear-gradient(135deg, var(--navy) 0%, var(--navy-700) 100%); color: #fff; padding: 72px 0; position: relative; overflow: hidden; }
.page-hero::after { content: ""; position: absolute; right: -80px; top: -80px; width: 320px; height: 320px; border-radius: 50%; background: rgba(15,110,86,0.25); filter: blur(2px); }
.page-hero .container { position: relative; z-index: 1; }
.page-hero .crumb { font-size: 13px; color: #9fbddc; margin-bottom: 14px; letter-spacing: 1px; }
.page-hero h1 { font-size: clamp(28px, 4vw, 42px); font-weight: 700; letter-spacing: -0.3px; }
.page-hero p { font-size: 17px; color: #cfe0f2; margin-top: 14px; max-width: 680px; line-height: 1.7; }

/* ---------- 通用工具类 ---------- */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; } .mt-8 { margin-top: 8px; } .mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; } .mt-32 { margin-top: 32px; } .mt-48 { margin-top: 48px; } .mt-64 { margin-top: 64px; }
.mb-16 { margin-bottom: 16px; } .mb-24 { margin-bottom: 24px; } .mb-32 { margin-bottom: 32px; } .mb-48 { margin-bottom: 48px; }
.divider { height: 1px; background: var(--line); border: none; margin: 0; }
.tag-pill { display: inline-flex; align-items: center; padding: 5px 13px; border-radius: 999px; font-size: 12.5px; font-weight: 600; }

/* ---------- 滚动显现 ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in { opacity: 1; transform: translateY(0); }

/* ---------- 加载动画 ---------- */
.spinner {
  width: 18px; height: 18px; border: 2px solid rgba(255,255,255,0.4); border-top-color: #fff;
  border-radius: 50%; animation: spin 0.7s linear infinite; display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg); } }