/* =========================================================
   青山AI分身官网 · 黑金设计系统 V4.0
   深黑背景 + 金色点缀 · 大量留白 · 克制高级
   ========================================================= */

:root {
  --bg: #0a0a0b;
  --bg-soft: #111113;
  --bg-card: #15151a;
  --bg-card-2: #1b1b22;
  --gold: #d4af37;
  --gold-bright: #f0c95a;
  --gold-deep: #b8902a;
  --gold-soft: rgba(212, 175, 55, 0.12);
  --gold-line: rgba(212, 175, 55, 0.28);
  --text: #f3f1ea;
  --text-soft: #c4c1b8;
  --muted: #8a8780;
  --border: rgba(255, 255, 255, 0.06);
  --border-strong: rgba(255, 255, 255, 0.12);
  --radius: 16px;
  --radius-sm: 10px;
  --maxw: 1200px;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.55);
  --gold-grad: linear-gradient(135deg, #f0c95a 0%, #d4af37 45%, #b8902a 100%);
  --font: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui,
    -apple-system, "Segoe UI", Roboto, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* 背景纹理：极淡的金色光晕 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(900px 500px at 80% -5%, rgba(212, 175, 55, 0.08), transparent 60%),
    radial-gradient(700px 500px at -5% 10%, rgba(212, 175, 55, 0.05), transparent 55%);
  pointer-events: none;
  z-index: 0;
}

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

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; position: relative; z-index: 1; }

/* ---------------- 金色文字 / 标题 ---------------- */
.gold { color: var(--gold); }
.gold-grad {
  background: var(--gold-grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
h1, h2, h3, h4 { font-weight: 800; line-height: 1.25; letter-spacing: 0.5px; }
.section-title { font-size: clamp(28px, 4vw, 44px); margin-bottom: 14px; }
.section-sub { color: var(--muted); font-size: 17px; max-width: 720px; }

/* ---------------- 导航 ---------------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(10, 10, 11, 0.82);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 0 24px;
  height: 68px; display: flex; align-items: center; justify-content: space-between;
}
.logo { display: flex; align-items: center; gap: 11px; font-weight: 800; font-size: 19px; }
.logo .mark {
  width: 34px; height: 34px; border-radius: 9px;
  background: var(--gold-grad); color: #1a1407;
  display: grid; place-items: center; font-size: 18px; font-weight: 900;
  box-shadow: 0 6px 18px rgba(212, 175, 55, 0.35);
}
.logo small { display: block; font-size: 11px; color: var(--muted); font-weight: 500; letter-spacing: 2px; }
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links > .item { position: relative; }
.nav-links > .item > a {
  display: block; padding: 10px 15px; border-radius: 9px;
  color: var(--text-soft); font-size: 15px; font-weight: 600; transition: 0.2s;
}
.nav-links > .item > a:hover { color: var(--gold); background: var(--gold-soft); }
.dropdown {
  position: absolute; top: 100%; left: 0; min-width: 220px;
  background: var(--bg-card); border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm); padding: 8px; margin-top: 6px;
  box-shadow: var(--shadow); opacity: 0; visibility: hidden; transform: translateY(-6px);
  transition: 0.2s;
}
.nav-links > .item:hover .dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown a { display: block; padding: 9px 12px; border-radius: 8px; color: var(--text-soft); font-size: 14px; }
.dropdown a:hover { background: var(--gold-soft); color: var(--gold); }
.nav-cta { margin-left: 8px; }
.nav-toggle { display: none; background: none; border: 0; color: var(--text); font-size: 26px; cursor: pointer; }

/* ---------------- 按钮 ---------------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px; justify-content: center;
  padding: 13px 26px; border-radius: 999px; font-weight: 700; font-size: 15px;
  cursor: pointer; border: 1px solid transparent; transition: 0.22s; white-space: nowrap;
}
.btn-gold { background: var(--gold-grad); color: #1a1407; box-shadow: 0 10px 30px rgba(212, 175, 55, 0.32); }
.btn-gold:hover { transform: translateY(-2px); box-shadow: 0 16px 40px rgba(212, 175, 55, 0.45); }
.btn-ghost { background: transparent; border-color: var(--gold-line); color: var(--gold); }
.btn-ghost:hover { background: var(--gold-soft); transform: translateY(-2px); }
.btn-lg { padding: 16px 34px; font-size: 16px; }
.btn-block { width: 100%; }

/* ---------------- 区块通用 ---------------- */
.section { padding: 90px 0; position: relative; z-index: 1; }
.section.tight { padding: 60px 0; }
.eyebrow {
  display: inline-block; font-size: 13px; letter-spacing: 3px; text-transform: uppercase;
  color: var(--gold); font-weight: 700; margin-bottom: 14px;
  padding: 5px 14px; border: 1px solid var(--gold-line); border-radius: 999px;
}
.center { text-align: center; }
.divider { height: 1px; background: var(--border); max-width: var(--maxw); margin: 0 auto; }

/* ---------------- HERO ---------------- */
.hero { padding: 100px 0 80px; position: relative; z-index: 1; }
.hero h1 { font-size: clamp(38px, 6.2vw, 70px); line-height: 1.12; margin-bottom: 22px; }
.hero .sub { font-size: clamp(17px, 2.2vw, 21px); color: var(--text-soft); max-width: 760px; margin: 0 auto 18px; }
.hero .desc { color: var(--muted); max-width: 820px; margin: 0 auto 34px; font-size: 16px; }
.hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.hero-badges { display: flex; gap: 26px; justify-content: center; flex-wrap: wrap; margin-top: 46px; }
.hero-badges .b { text-align: center; }
.hero-badges .b .n { font-size: 30px; font-weight: 800; color: var(--gold); }
.hero-badges .b .t { font-size: 13px; color: var(--muted); }

/* ---------------- 卡片 ---------------- */
.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); }

.card {
  background: linear-gradient(180deg, var(--bg-card), var(--bg-soft));
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 30px; transition: 0.25s; position: relative; overflow: hidden;
}
.card:hover { border-color: var(--gold-line); transform: translateY(-4px); }
.card .ico {
  width: 50px; height: 50px; border-radius: 12px; margin-bottom: 18px;
  background: var(--gold-soft); color: var(--gold);
  display: grid; place-items: center; font-size: 24px; font-weight: 800;
  border: 1px solid var(--gold-line);
}
.card h3 { font-size: 21px; margin-bottom: 12px; }
.card p { color: var(--text-soft); font-size: 15px; }
.card .tag { font-size: 12px; color: var(--gold); letter-spacing: 1px; font-weight: 700; }
.card-link { margin-top: 18px; display: inline-block; color: var(--gold); font-weight: 700; font-size: 14px; }

/* 痛点卡片 */
.pain { border-left: 3px solid var(--gold); }
.pain h3 { color: var(--gold-bright); font-size: 22px; }
.pain ul { list-style: none; margin-top: 14px; }
.pain li { color: var(--text-soft); font-size: 15px; padding: 7px 0 7px 22px; position: relative; }
.pain li::before { content: "—"; position: absolute; left: 0; color: var(--gold); }

/* 四个分身卡片（首页） */
.fenshen-card .num {
  font-size: 13px; color: var(--gold); font-weight: 800; letter-spacing: 2px;
}
.fenshen-card h3 { font-size: 24px; margin: 8px 0 10px; }
.fenshen-card .line { color: var(--gold); font-weight: 700; margin-top: 14px; font-size: 15px; }

/* 首页四个分身 · 流程图串联 */
.fenshen-flow { max-width: 980px; margin: 0 auto; }
.flow-row { display: flex; align-items: stretch; gap: 12px; justify-content: center; }
.flow-row .fcard { flex: 1; }
.flow-arrow { align-self: center; color: var(--gold); font-size: 30px; font-weight: 800; flex: 0 0 30px; width: 30px; text-align: center; }
/* 4号总控 ↔ 1/2/3 号：上下双向箭头（无文字表达） */
.flow-conn { display: flex; align-items: center; gap: 12px; justify-content: center; margin: 8px 0; }
.flow-conn .cell { flex: 1; text-align: center; color: var(--gold); font-size: 26px; font-weight: 800; line-height: 1; animation: connPulse 2.4s ease-in-out infinite; }
.flow-conn .sep { flex: 0 0 30px; width: 30px; }
@keyframes connPulse { 0%, 100% { opacity: 0.5; } 50% { opacity: 1; } }
.fcard {
  background: var(--bg-card); border: 1px solid var(--gold-line); border-radius: 16px;
  padding: 24px 20px; text-align: center; box-shadow: var(--shadow); position: relative;
}
.fcard .fnum { font-size: 13px; color: var(--gold); font-weight: 800; letter-spacing: 2px; }
.fcard .fname { font-size: 21px; font-weight: 800; margin: 6px 0 10px; }
.fcard .fdesc { color: var(--text-soft); font-size: 14px; line-height: 1.7; }
.fcard .fline { color: var(--gold); font-weight: 700; margin-top: 12px; font-size: 14px; }
.flow-ctrl { max-width: none; margin: 0 auto; }
.flow-ctrl .fcard { width: 100%; border-color: var(--gold); background: linear-gradient(135deg, #1a160c, #0f0f12); }

/* 行业入口 */
.industry {
  display: flex; align-items: center; gap: 16px; justify-content: space-between;
  padding: 22px 26px; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--bg-card); transition: 0.22s;
}
.industry:hover { border-color: var(--gold-line); background: var(--bg-card-2); }
.industry .l { display: flex; align-items: center; gap: 16px; }
.industry .dot { width: 42px; height: 42px; border-radius: 11px; background: var(--gold-soft); color: var(--gold); display: grid; place-items: center; font-size: 20px; border: 1px solid var(--gold-line); }
.industry h4 { font-size: 17px; }
.industry p { color: var(--muted); font-size: 14px; }
.industry .arrow { color: var(--gold); font-size: 20px; }

/* ---------------- 表格 ---------------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; min-width: 640px; }
thead th {
  background: var(--gold-soft); color: var(--gold); text-align: left;
  padding: 16px 20px; font-size: 15px; font-weight: 800; white-space: nowrap;
}
tbody td { padding: 16px 20px; border-top: 1px solid var(--border); color: var(--text-soft); font-size: 15px; vertical-align: top; }
tbody tr:hover { background: rgba(255, 255, 255, 0.02); }

/* ---------------- 信任证明 ---------------- */
.trust-item { display: flex; gap: 18px; align-items: flex-start; padding: 22px 0; border-bottom: 1px solid var(--border); }
.trust-item:last-child { border-bottom: 0; }
.trust-item .q { color: var(--gold); font-size: 28px; font-weight: 800; line-height: 1; }
.trust-item .body { color: var(--text-soft); font-size: 15px; }
.trust-item .body b { color: var(--text); }
.quote {
  border: 1px solid var(--gold-line); border-radius: var(--radius); padding: 26px;
  background: var(--bg-card); font-size: 17px; color: var(--text);
}
.quote .who { display: block; margin-top: 14px; color: var(--gold); font-weight: 700; font-size: 14px; }

/* ---------------- CTA 区块 ---------------- */
.cta {
  background: linear-gradient(135deg, #1a160c, #0f0f12);
  border: 1px solid var(--gold-line); border-radius: 22px;
  padding: 60px 40px; text-align: center; position: relative; overflow: hidden;
}
.cta h2 { font-size: clamp(26px, 4vw, 40px); margin-bottom: 18px; }
.cta p { color: var(--text-soft); max-width: 640px; margin: 0 auto 14px; }
.cta .small { color: var(--muted); font-size: 13px; margin-top: 18px; }

/* ---------------- 页脚 ---------------- */
.footer { border-top: 1px solid var(--border); padding: 60px 0 30px; margin-top: 40px; background: var(--bg-soft); position: relative; z-index: 1; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 30px; }
.footer h5 { font-size: 14px; color: var(--gold); margin-bottom: 16px; letter-spacing: 1px; }
.footer a { display: block; color: var(--muted); font-size: 14px; padding: 5px 0; }
.footer a:hover { color: var(--gold); }
.footer .about p { color: var(--muted); font-size: 14px; max-width: 320px; }
.footer-bottom { border-top: 1px solid var(--border); margin-top: 40px; padding-top: 22px; color: var(--muted); font-size: 13px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }

/* ---------------- 对话 Demo 组件 ---------------- */
.demo-shell {
  border: 1px solid var(--gold-line); border-radius: 20px; overflow: hidden;
  background: var(--bg-card); max-width: 760px; margin: 0 auto; box-shadow: var(--shadow);
}
.demo-tabs { display: flex; gap: 4px; padding: 10px 10px 0; background: var(--bg-soft); }
.demo-tab {
  flex: 1; padding: 12px; text-align: center; cursor: pointer; border-radius: 10px 10px 0 0;
  color: var(--muted); font-weight: 700; font-size: 14px; border: 1px solid transparent; border-bottom: 0;
}
.demo-tab.active { background: var(--bg-card); color: var(--gold); border-color: var(--gold-line); }
.demo-head { padding: 14px 18px; display: flex; align-items: center; gap: 10px; border-bottom: 1px solid var(--border); }
.demo-head .av { width: 36px; height: 36px; border-radius: 50%; background: var(--gold-grad); color: #1a1407; display: grid; place-items: center; font-weight: 800; }
.demo-head .nm { font-weight: 700; }
.demo-head .st { font-size: 12px; color: #6fcf86; }
.demo-body { height: 340px; overflow-y: auto; padding: 20px; display: flex; flex-direction: column; gap: 14px; }
.bubble { max-width: 80%; padding: 12px 16px; border-radius: 14px; font-size: 15px; line-height: 1.6; }
.bubble.bot { background: var(--bg-card-2); border: 1px solid var(--border); align-self: flex-start; border-bottom-left-radius: 4px; }
.bubble.me { background: var(--gold-soft); color: var(--gold); align-self: flex-end; border-bottom-right-radius: 4px; }
.demo-input { display: flex; gap: 8px; padding: 14px; border-top: 1px solid var(--border); background: var(--bg-soft); }
.demo-input input { flex: 1; background: var(--bg); border: 1px solid var(--border-strong); color: var(--text); border-radius: 999px; padding: 12px 18px; outline: none; font-size: 14px; }
.demo-input input:focus { border-color: var(--gold-line); }
.demo-chips { display: flex; gap: 8px; flex-wrap: wrap; padding: 0 18px 16px; }
.chip { font-size: 13px; padding: 8px 14px; border: 1px solid var(--gold-line); border-radius: 999px; color: var(--gold); cursor: pointer; background: transparent; }
.chip:hover { background: var(--gold-soft); }
.demo-frame-wrap { padding: 0; }
.demo-frame {
  width: 100%; height: 560px; border: 0; display: block; background: var(--bg);
}
.demo-open { display: block; text-align: center; padding: 12px; font-size: 13px; color: var(--gold); text-decoration: none; border-top: 1px solid var(--border); background: var(--bg-soft); }
.demo-open:hover { background: var(--gold-soft); }

/* ---------------- 自测工具 ---------------- */
.quiz { max-width: 720px; margin: 0 auto; }
.quiz-q { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px; margin-bottom: 18px; }
.quiz-q .qn { font-weight: 800; margin-bottom: 16px; font-size: 17px; }
.quiz-q .qn b { color: var(--gold); }
.opts { display: flex; flex-wrap: wrap; gap: 12px; }
.opt {
  padding: 12px 18px; border: 1px solid var(--border-strong); border-radius: 999px;
  cursor: pointer; font-size: 14px; color: var(--text-soft); transition: 0.18s; background: var(--bg-soft);
}
.opt:hover { border-color: var(--gold-line); }
.opt.sel { background: var(--gold-soft); color: var(--gold); border-color: var(--gold); font-weight: 700; }
.quiz-result {
  display: none; margin-top: 10px; padding: 30px; border: 1px solid var(--gold-line);
  border-radius: var(--radius); background: linear-gradient(135deg, #1a160c, #0f0f12); text-align: center;
}
.quiz-result.show { display: block; }
.quiz-result h3 { color: var(--gold); font-size: 24px; margin-bottom: 12px; }
.quiz-result .ver { font-size: 30px; font-weight: 800; color: var(--gold-bright); margin: 8px 0; }

/* ---------------- 表单 ---------------- */
.form { max-width: 560px; margin: 0 auto; }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 14px; color: var(--text-soft); margin-bottom: 8px; font-weight: 600; }
.field input, .field select, .field textarea {
  width: 100%; background: var(--bg); border: 1px solid var(--border-strong);
  color: var(--text); border-radius: var(--radius-sm); padding: 13px 16px; outline: none; font-size: 15px; font-family: var(--font);
}
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--gold-line); }
.field textarea { resize: vertical; min-height: 110px; }
.form-note { color: var(--muted); font-size: 13px; text-align: center; margin-top: 14px; }
.form-ok {
  display: none; padding: 22px; border: 1px solid var(--gold-line); border-radius: var(--radius);
  background: var(--gold-soft); color: var(--gold); text-align: center; font-weight: 700; margin-top: 18px;
}
.form-ok.show { display: block; }

/* ---------------- 博客 / 案例 卡片 ---------------- */
.post-card { display: flex; flex-direction: column; gap: 8px; }
.post-card .meta { font-size: 13px; color: var(--muted); }
.post-card h3 { font-size: 20px; }
.post-card p { color: var(--text-soft); font-size: 15px; }

/* 博客正文（mdLite 渲染） */
.blog-body { font-size: 17px; line-height: 1.95; color: var(--text-soft); letter-spacing: 0.2px; }
.blog-body h2 { font-size: 24px; color: var(--gold); margin: 36px 0 16px; font-weight: 800; letter-spacing: 0.5px; padding-left: 14px; border-left: 4px solid var(--gold); }
.blog-body h3 { font-size: 20px; color: var(--text); margin: 28px 0 12px; font-weight: 800; }
.blog-body h4 { font-size: 17px; color: var(--text); margin: 22px 0 10px; font-weight: 700; }
.blog-body p { margin: 16px 0; }
.blog-body ul { margin: 16px 0; padding-left: 22px; }
.blog-body ul li { margin: 9px 0; }
.blog-body strong { color: var(--gold); font-weight: 800; }
.blog-body code { background: var(--bg-soft); border: 1px solid var(--border); border-radius: 4px; padding: 1px 6px; font-size: 14px; color: var(--gold); }
.blog-body a { color: var(--gold); text-decoration: underline; }
.blog-fig { margin: 26px 0; text-align: center; }
.blog-img { max-width: 100%; width: 100%; border-radius: 12px; border: 1px solid var(--gold-line); box-shadow: var(--shadow); }
.blog-fig figcaption { display: block; margin-top: 10px; font-size: 13px; color: var(--muted); }

/* ---------- 公众号原文排版（白纸卡片，金色点缀与站点协调） ---------- */
.article-paper {
  background: #ffffff; color: #3e3e3e; border-radius: 14px;
  padding: 40px 26px; margin: 0 auto; max-width: 760px;
  box-shadow: var(--shadow); border: 1px solid var(--gold-line);
}
.article-paper section { padding: 0 !important; }
.article-paper p { color: #3e3e3e; }
.article-paper strong { color: #1a1a1a; }
.article-paper img { max-width: 100%; height: auto; display: block; }
.article-paper a { color: #A57C1B; }
@media (max-width: 720px) {
  .article-paper { padding: 26px 16px; border-radius: 10px; }
  .article-paper h1 { font-size: 19px !important; }
}

/* ---------- 手机版表格适配：不撑破版面，整块可横向滑动 ---------- */
@media (max-width: 720px) {
  .table-wrap { -webkit-overflow-scrolling: touch; border-radius: 10px; }
  table { min-width: 520px; }
  thead th { padding: 10px 12px; font-size: 13px; }
  tbody td { padding: 10px 12px; font-size: 13px; }
  /* 公众号文章内嵌表格（自带内联宽度）：转为块级可滑动，避免溢出被裁切 */
  .article-paper table { display: block; width: 100% !important; max-width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .article-paper td, .article-paper th { padding: 8px 10px !important; font-size: 13px !important; line-height: 1.6 !important; }
}

/* 联系我们 · 微信二维码 */
.qr-box { display: flex; flex-direction: column; align-items: center; gap: 10px; margin: 20px 0 6px; }
.qr-img { width: 180px; height: 180px; border-radius: 14px; border: 1px solid var(--gold-line); background: #fff; padding: 8px; box-shadow: var(--shadow); }
.qr-cap { font-size: 13px; color: var(--muted); }

/* FAQ（四类 · 两行四框一屏） */
.faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.faq-cat { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px 26px; }
.faq-cat-t { font-size: 19px; color: var(--gold); margin-bottom: 14px; padding-bottom: 10px; border-bottom: 1px solid var(--gold-line); }
.faq-item { display: block; border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 14px 18px; margin-bottom: 12px; transition: 0.2s; text-decoration: none; color: var(--text); }
.faq-item:last-child { margin-bottom: 0; }
.faq-item:hover { border-color: var(--gold-line); background: var(--bg-card-2); }
.faq-item .q { font-weight: 700; font-size: 15.5px; display: flex; justify-content: space-between; gap: 12px; align-items: center; }
.faq-item .q .go { color: var(--gold); font-size: 18px; flex: 0 0 auto; }

/* ---------------- 信息图（为什么是我们） ---------------- */
.infographic { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 40px; }
.timeline { position: relative; padding-left: 30px; }
.timeline::before { content: ""; position: absolute; left: 7px; top: 6px; bottom: 6px; width: 2px; background: var(--gold-line); }
.tl-item { position: relative; padding: 8px 0 26px; }
.tl-item::before { content: ""; position: absolute; left: -27px; top: 12px; width: 14px; height: 14px; border-radius: 50%; background: var(--gold-grad); box-shadow: 0 0 0 4px rgba(212,175,55,0.15); }
.tl-item .yr { color: var(--gold); font-weight: 800; font-size: 18px; }
.tl-item .tt { font-weight: 700; font-size: 17px; }
.tl-item .dd { color: var(--muted); font-size: 14px; }
.venn { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.venn .v { border: 1px solid var(--gold-line); border-radius: var(--radius); padding: 22px; text-align: center; background: var(--bg-soft); }
.venn .v .vt { color: var(--gold); font-weight: 800; font-size: 16px; margin-bottom: 6px; }
.venn .v p { color: var(--text-soft); font-size: 14px; }
.fortress { display: flex; flex-direction: column; gap: 12px; }
.fortress .f { border: 1px solid var(--gold-line); border-radius: var(--radius-sm); padding: 18px 22px; background: var(--bg-soft); display: flex; gap: 14px; align-items: center; }
.fortress .f .ln { color: var(--gold); font-weight: 800; font-size: 13px; min-width: 60px; }
.fortress .f .ft { font-weight: 700; }
.fortress .f p { color: var(--muted); font-size: 13px; }

/* ---------------- 代理收益表 ---------------- */
.rev-card { border: 1px solid var(--gold-line); border-radius: var(--radius); padding: 28px; text-align: center; background: linear-gradient(180deg, #161208, #0f0f12); }
.rev-card .rn { font-size: 34px; font-weight: 800; color: var(--gold); }
.rev-card .rt { font-size: 15px; color: var(--text-soft); margin-top: 6px; }
.steps { display: flex; gap: 14px; flex-wrap: wrap; justify-content: center; margin-top: 10px; }
.step { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px 24px; min-width: 180px; }
.step .sn { color: var(--gold); font-weight: 800; font-size: 22px; }
.step .st { font-weight: 700; margin: 6px 0; }

/* ---------------- 面包屑 / 页头 ---------------- */
.pagehead { padding: 70px 0 40px; text-align: center; }
.pagehead h1 { font-size: clamp(30px, 5vw, 52px); margin-bottom: 14px; }
.pagehead p { color: var(--text-soft); max-width: 720px; margin: 0 auto; }

/* ---------------- 响应式 ---------------- */
@media (max-width: 980px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .nav-links { display: none; position: absolute; top: 68px; left: 0; right: 0; flex-direction: column; background: var(--bg-card); border-bottom: 1px solid var(--border); padding: 12px; gap: 0; }
  .nav-links.open { display: flex; }
  .nav-links > .item > a { padding: 13px 14px; }
  .dropdown { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: 0; border-left: 2px solid var(--gold-line); margin: 0 0 6px 12px; min-width: 0; }
  .nav-cta { display: none; }
  .nav-toggle { display: block; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .section { padding: 64px 0; }
  .venn { grid-template-columns: 1fr; }
  .hero { padding: 70px 0 50px; }
  .cta { padding: 44px 22px; }
  .infographic { padding: 26px; }
  .faq-grid { grid-template-columns: 1fr; }
  .flow-row { flex-direction: column; align-items: stretch; }
  .flow-arrow { display: none; }
  .flow-conn .sep, .flow-conn .cell { display: none; }
  .flow-conn::before { content: "↕"; display: block; text-align: center; color: var(--gold); font-size: 28px; font-weight: 800; line-height: 1; }
  .demo-frame { height: 460px; }
}