/* ============================================================
   桐莜辰 · 人工智能应用软件信息平台
   Design System v3 — "NAVY & WHITE"（藏蓝白）
   结构沿用 v2，仅整体换配色：藏蓝主色 + 白色卡片 + 浅灰蓝底
   ============================================================ */

:root {
  --bg: #F5F8FC;
  --bg-2: #FFFFFF;
  --panel: #FFFFFF;
  --panel-strong: #EEF3FA;
  --line: #E1E8F2;
  --line-strong: #C6D2E3;
  --txt: #12233F;
  --txt-2: #4C5E7C;
  --txt-3: #8493AD;
  --navy: #1B2A4A;
  --navy-2: #2F5AA8;
  --navy-3: #4A7AC4;
  --grad: linear-gradient(100deg, #1B2A4A 0%, #2F5AA8 100%);
  --grad-soft: linear-gradient(100deg, #2C4570 0%, #4A7AC4 100%);
  --ok: #1F9D63;
  --warn: #C77D16;
  --bad: #C4394B;
  --r-lg: 22px;
  --r-md: 14px;
  --r-sm: 10px;
  --font: "MiSans", "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --mono: "Cascadia Code", "JetBrains Mono", Consolas, monospace;
  --shadow: 0 12px 34px rgba(18, 35, 63, 0.08);
  --shadow-hover: 0 18px 46px rgba(18, 35, 63, 0.14);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--txt);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* 底色氛围：淡蓝网格 + 顶部藏蓝光晕 */
body::before {
  content: "";
  position: fixed; inset: 0; z-index: -2;
  background:
    radial-gradient(760px 460px at 10% -6%, rgba(47, 90, 168, 0.10), transparent 62%),
    radial-gradient(720px 440px at 96% 8%, rgba(27, 42, 74, 0.07), transparent 60%),
    var(--bg);
}
body::after {
  content: "";
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background-image:
    linear-gradient(rgba(27, 42, 74, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(27, 42, 74, 0.045) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 30%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 30%, transparent 78%);
}

::selection { background: rgba(47, 90, 168, 0.18); color: var(--navy); }

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }
input, select, textarea { font-family: inherit; }
h1, h2, h3, h4 { line-height: 1.3; letter-spacing: 0.01em; color: var(--navy); }

.container { width: min(1180px, 92%); margin: 0 auto; }

/* ---------- 渐入 ---------- */
.fade-in { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s cubic-bezier(.2,.7,.2,1); }
.fade-in.visible { opacity: 1; transform: none; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 30px; border-radius: 999px; border: 1px solid transparent;
  font-size: 15px; font-weight: 600; letter-spacing: 0.02em; color: #fff;
  transition: transform .22s ease, box-shadow .22s ease, background .22s ease, border-color .22s ease, color .22s ease;
  user-select: none;
}
.btn:active { transform: scale(.97); }
.btn-primary {
  background: var(--grad); color: #fff;
  box-shadow: 0 10px 26px rgba(47, 90, 168, 0.28);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 36px rgba(47, 90, 168, 0.36); }
.btn-outline { border-color: var(--line-strong); color: var(--navy); background: #fff; }
.btn-outline:hover { border-color: var(--navy-2); color: var(--navy-2); box-shadow: 0 8px 22px rgba(47, 90, 168, 0.14); }
.btn-outline-dark { border-color: var(--line-strong); color: var(--txt-2); background: #fff; }
.btn-outline-dark:hover { border-color: var(--navy-2); color: var(--navy-2); background: var(--panel-strong); }

/* ---------- 区块通用 ---------- */
.section { padding: 96px 0; position: relative; }
.section.bg-light { background: transparent; }
.section.bg-light::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(180deg, transparent, rgba(47, 90, 168, 0.045) 50%, transparent);
}
.section-tag {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12.5px; font-weight: 700; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--navy-2);
  padding: 7px 16px; border-radius: 999px;
  border: 1px solid rgba(47, 90, 168, 0.28);
  background: rgba(47, 90, 168, 0.06);
}
.section-tag::before { content: "◆"; font-size: 8px; }
.section-title { font-size: clamp(26px, 3.4vw, 38px); font-weight: 800; margin: 18px 0 10px; }
.section-subtitle { color: var(--txt-2); font-size: 16px; max-width: 640px; margin: 0 auto; }
.section-subtitle a { color: var(--navy-2); }

/* ============================================================
   导航栏（白色玻璃 + 藏蓝 logo）
   ============================================================ */
.navbar {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s ease, background .3s ease, box-shadow .3s ease;
}
.navbar.scrolled { border-bottom-color: var(--line); background: rgba(255, 255, 255, 0.95); box-shadow: 0 6px 24px rgba(18, 35, 63, 0.06); }
.navbar > .container { display: flex; align-items: center; gap: 28px; height: 72px; }

.nav-logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.nav-logo span {
  font-size: 20px; font-weight: 900; letter-spacing: 0.06em;
  color: var(--navy);
  position: relative; padding-left: 18px;
}
.nav-logo span::before {
  content: ""; position: absolute; left: 0; top: 50%;
  width: 10px; height: 10px; border-radius: 3px; background: var(--grad);
  transform: translateY(-50%) rotate(45deg);
}

.nav-menu { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav-menu > li { position: relative; }
.nav-menu a:not(.btn) {
  display: inline-block; padding: 9px 16px; border-radius: 999px;
  font-size: 14.5px; color: var(--txt-2); font-weight: 500;
  transition: color .2s ease, background .2s ease;
}
.nav-menu a:not(.btn):hover { color: var(--navy); background: var(--panel-strong); }
.nav-menu a.active { color: var(--navy); font-weight: 700; background: var(--panel-strong); }

#navAuth { display: flex; align-items: center; gap: 10px; }
.nav-login { font-size: 14.5px; color: var(--txt-2); padding: 9px 14px; border-radius: 999px; }
.nav-login:hover { color: var(--navy); background: var(--panel-strong); }
.nav-register { padding: 10px 22px !important; font-size: 14px !important; }
.nav-user {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 14px; font-weight: 600; color: var(--navy);
  padding: 8px 16px; border-radius: 999px; border: 1px solid var(--line);
  background: #fff;
}
.nav-user-ico { width: 8px; height: 8px; border-radius: 50%; background: var(--ok); }
.nav-logout { font-size: 13.5px; color: var(--txt-3); padding: 8px 6px; }
.nav-logout:hover { color: var(--bad); }

/* 商城入口按钮（商城品牌绿） */
.nav-mall-link {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  padding: 9px 18px !important; border-radius: 999px;
  font-size: 14px !important; font-weight: 700; letter-spacing: 0.02em;
  color: #F0FDF4 !important;
  background: linear-gradient(135deg, #16A34A 0%, #14532D 100%) !important;
  border: 1px solid rgba(20, 83, 45, 0.85);
  box-shadow: 0 8px 18px rgba(21, 128, 61, 0.26);
  transition: transform .22s ease, box-shadow .22s ease, filter .22s ease;
}
.nav-mall-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 30px rgba(21, 128, 61, 0.38);
  filter: brightness(1.07);
  color: #fff !important;
  background: linear-gradient(135deg, #16A34A 0%, #14532D 100%) !important;
}
.nav-mall-link svg { width: 15px; height: 15px; flex-shrink: 0; }

.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; padding: 10px; margin-left: auto; }
.nav-toggle span { width: 22px; height: 2px; background: var(--navy); border-radius: 2px; transition: .3s ease; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   首页 Hero
   ============================================================ */
.hero { position: relative; padding: 100px 0 86px; overflow: hidden; }
.hero-bg-grid { display: none; }
.hero > .container { position: relative; display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 60px; align-items: center; }
.hero::before {
  content: ""; position: absolute; right: -160px; top: -140px;
  width: 560px; height: 560px; border-radius: 50%;
  background: radial-gradient(circle, rgba(47, 90, 168, 0.14), transparent 66%);
  pointer-events: none;
}

.hero-content { max-width: 560px; }
.hero-tag {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 13px; font-weight: 600; letter-spacing: 0.12em;
  color: var(--navy-2); padding: 8px 18px; border-radius: 999px;
  border: 1px solid rgba(47, 90, 168, 0.28); background: rgba(47, 90, 168, 0.07);
}
.hero-tag::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--navy-2); animation: pulse 1.8s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .3; } }

.hero h1 { margin: 26px 0 20px; font-size: clamp(34px, 4.6vw, 56px); font-weight: 900; line-height: 1.22; }
.hero .grad { color: var(--navy-2); }
.hero p { color: var(--txt-2); font-size: 16.5px; max-width: 500px; }
.hero p b { color: var(--navy); }
.hero-actions { display: flex; gap: 14px; margin-top: 36px; flex-wrap: wrap; }

/* Hero 右侧数据面板 */
.hero-panel {
  border: 1px solid var(--line); border-radius: var(--r-lg);
  background: #fff; box-shadow: var(--shadow); overflow: hidden;
  font-family: var(--mono); font-size: 13px;
}
.hero-panel-bar {
  display: flex; align-items: center; gap: 7px;
  padding: 13px 18px; border-bottom: 1px solid var(--line);
  background: var(--navy);
}
.hero-panel-bar i { width: 10px; height: 10px; border-radius: 50%; display: inline-block; background: rgba(255,255,255,.35); }
.hero-panel-bar i:nth-child(1) { background: #FF8A8A; }
.hero-panel-bar i:nth-child(2) { background: #FFD07A; }
.hero-panel-bar i:nth-child(3) { background: #8FE0B4; }
.hero-panel-bar em { margin-left: auto; font-style: normal; color: rgba(255,255,255,.72); font-size: 11px; letter-spacing: .1em; }
.hero-panel-body { padding: 22px 24px 26px; line-height: 2.15; color: var(--txt-2); background: #fff; }
.hero-panel-body .k { color: var(--txt-3); }
.hero-panel-body .v { color: var(--navy-2); font-weight: 600; }
.hero-panel-body .s { color: var(--navy); font-weight: 700; }
.hero-panel-body .cursor { display: inline-block; width: 8px; height: 15px; background: var(--navy-2); vertical-align: -2px; animation: pulse 1.1s infinite; }
.hero-panel-foot { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); background: var(--panel-strong); }
.hero-panel-foot div { padding: 14px 10px; text-align: center; border-right: 1px solid var(--line); }
.hero-panel-foot div:last-child { border-right: none; }
.hero-panel-foot b { display: block; font-size: 19px; color: var(--navy); font-weight: 800; font-family: var(--font); }
.hero-panel-foot span { font-size: 11.5px; color: var(--txt-3); letter-spacing: .06em; }

/* ============================================================
   Bento 优势栅格
   ============================================================ */
.features-grid { display: grid; gap: 18px; margin-top: 48px; grid-template-columns: repeat(12, 1fr); }
.feature-card {
  grid-column: span 3; position: relative; overflow: hidden;
  border: 1px solid var(--line); border-radius: var(--r-md);
  background: #fff; box-shadow: 0 4px 16px rgba(18, 35, 63, 0.04);
  padding: 28px 26px 30px;
  transition: transform .28s ease, border-color .28s ease, box-shadow .28s ease;
}
.feature-card:nth-child(1), .feature-card:nth-child(6) { grid-column: span 6; }
.feature-card:hover { transform: translateY(-4px); border-color: rgba(47, 90, 168, 0.35); box-shadow: var(--shadow-hover); }
.feature-icon {
  width: 46px; height: 46px; border-radius: 13px;
  display: flex; align-items: center; justify-content: center;
  color: var(--navy-2); background: rgba(47, 90, 168, 0.08); border: 1px solid rgba(47, 90, 168, 0.18);
  margin-bottom: 18px;
}
.feature-card:nth-child(odd) .feature-icon { color: var(--navy); background: rgba(27, 42, 74, 0.07); border-color: rgba(27, 42, 74, 0.16); }
.feature-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.feature-card p { font-size: 14px; color: var(--txt-2); }

/* ============================================================
   服务矩阵
   ============================================================ */
.services-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 48px; }
.service-card {
  border: 1px dashed var(--line-strong); border-radius: var(--r-md);
  padding: 26px 24px; background: #fff;
  transition: border-color .25s ease, transform .25s ease, box-shadow .25s ease;
}
.service-card:hover { border-color: var(--navy-2); border-style: solid; transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.service-icon { color: var(--navy); margin-bottom: 14px; }
.service-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.service-card p { font-size: 13.5px; color: var(--txt-2); }

/* ============================================================
   信息列表（行式）
   ============================================================ */
.info-cards { display: flex; flex-direction: column; gap: 12px; margin-top: 44px; }
.info-card {
  display: grid; grid-template-columns: 150px minmax(0, 1fr) 260px; gap: 22px 22px; align-items: center;
  border: 1px solid var(--line); border-radius: var(--r-md);
  background: #fff; box-shadow: 0 3px 14px rgba(18, 35, 63, 0.04);
  padding: 22px 26px; position: relative;
  transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease;
}
/* 显式定位：左类型列与右发布方列各跨 2 行，中间列上下两格分别放标题/描述，避免 auto-flow 错位 */
.info-card > .info-card-top { grid-column: 1; grid-row: 1 / span 2; }
.info-card > h3 { grid-column: 2; grid-row: 1; min-width: 0; white-space: normal; word-break: break-word; margin: 0; }
.info-card > .info-desc { grid-column: 2; grid-row: 2; min-width: 0; }
.info-card > .info-publisher { grid-column: 3; grid-row: 1 / span 2; }
.info-card::before {
  content: ""; position: absolute; left: 0; top: 16%; bottom: 16%; width: 3px;
  border-radius: 3px; background: var(--grad); opacity: 0; transition: opacity .22s ease;
}
.info-card:hover { transform: translateX(6px); border-color: rgba(47, 90, 168, 0.35); box-shadow: -10px 6px 30px -12px rgba(47, 90, 168, 0.35); }
.info-card:hover::before { opacity: 1; }

.info-card-top { display: flex; flex-direction: column; gap: 10px; align-items: flex-start; }
.info-type-tag {
  display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: .05em;
  color: #fff; padding: 5px 13px; border-radius: 999px; background: var(--grad);
  white-space: nowrap;
}
.info-budget { font-family: var(--mono); font-size: 13px; color: var(--warn); white-space: nowrap; }
.info-card h3 { font-size: 17.5px; font-weight: 700; }
.info-desc {
  font-size: 13.5px; color: var(--txt-2); margin-top: 6px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.info-publisher { display: flex; flex-direction: column; align-items: flex-end; gap: 7px; text-align: right; }
.info-pub-name { display: inline-flex; align-items: center; gap: 7px; font-size: 13.5px; color: var(--txt-2); }
.info-pub-name svg { color: var(--txt-3); }
.info-pub-phone { display: inline-flex; align-items: center; gap: 7px; font-family: var(--mono); font-size: 13.5px; color: var(--navy-2); font-weight: 700; }
.info-time { font-size: 12px; color: var(--txt-3); }

.info-pager { display: flex; justify-content: center; gap: 8px; margin-top: 36px; flex-wrap: wrap; }
.page-btn {
  min-width: 40px; height: 40px; padding: 0 14px;
  border-radius: 999px; border: 1px solid var(--line);
  background: #fff; color: var(--txt-2); font-size: 14px; transition: .2s ease;
}
.page-btn:hover:not(.disabled):not(.active) { border-color: var(--navy-2); color: var(--navy-2); }
.page-btn.active { background: var(--grad); color: #fff; font-weight: 700; border-color: transparent; }
.page-btn.disabled { opacity: .35; cursor: not-allowed; }
.empty-state { text-align: center; color: var(--txt-3); padding: 80px 0; font-size: 15px; }

/* ============================================================
   统计
   ============================================================ */
.stats-section {
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  background: linear-gradient(90deg, rgba(27, 42, 74, 0.05), rgba(47, 90, 168, 0.06));
  padding: 64px 0;
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.stat-item { text-align: center; position: relative; }
.stat-item + .stat-item::before { content: ""; position: absolute; left: 0; top: 20%; bottom: 20%; width: 1px; background: var(--line-strong); }
.stat-num { font-family: var(--mono); font-size: clamp(34px, 4vw, 48px); font-weight: 800; color: var(--navy); }
.stat-num .plus { font-size: 0.6em; color: var(--navy-2); }
.stat-label { margin-top: 4px; color: var(--txt-2); font-size: 14px; letter-spacing: .08em; }

/* ============================================================
   CTA
   ============================================================ */
.cta-section { padding: 104px 0; text-align: center; position: relative; overflow: hidden; }
.cta-section::before {
  content: ""; position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  width: 740px; height: 400px; border-radius: 50%;
  background: radial-gradient(ellipse, rgba(47, 90, 168, 0.10), transparent 68%);
  pointer-events: none;
}
.cta-section h2 { font-size: clamp(26px, 3.2vw, 36px); font-weight: 800; }
.cta-section p { color: var(--txt-2); margin: 14px 0 32px; }

/* ============================================================
   页脚（藏蓝底 + 白字）
   ============================================================ */
.footer { background: var(--navy); color: rgba(255,255,255,.72); padding: 62px 0 26px; margin-top: 0; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr 1.4fr; gap: 36px; }
.footer-brand p { color: rgba(255,255,255,.6); font-size: 13.5px; margin-top: 16px; max-width: 300px; }
.footer .nav-logo span { color: #fff; }
.footer .nav-logo span::before { background: rgba(255,255,255,.9); }
.footer-col h4 { font-size: 12.5px; font-weight: 700; letter-spacing: .18em; color: rgba(255,255,255,.45); text-transform: uppercase; margin-bottom: 18px; }
.footer-col li { margin-bottom: 11px; }
.footer-col a, .footer-col li { font-size: 14px; color: rgba(255,255,255,.72); }
.footer-col a:hover { color: #fff; }
.footer-links { display: flex; justify-content: center; gap: 26px; flex-wrap: wrap; margin-bottom: 18px; }
.footer-links a { color: rgba(255,255,255,.66); font-size: 13.5px; }
.footer-links a:hover { color: #fff; }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap;
  border-top: 1px solid rgba(255,255,255,.12); margin-top: 32px; padding-top: 22px;
  color: rgba(255,255,255,.55); font-size: 13px;
}
.footer-icp { font-family: var(--mono); letter-spacing: .04em; }

/* ============================================================
   内页 Hero
   ============================================================ */
.hero-inner { padding: 78px 0 56px; position: relative; overflow: hidden; }
.hero-inner::before {
  content: ""; position: absolute; right: -140px; top: -80px;
  width: 460px; height: 460px; border-radius: 50%;
  background: radial-gradient(circle, rgba(47, 90, 168, 0.10), transparent 66%);
  pointer-events: none;
}
.hero-inner h1 { font-size: clamp(28px, 3.6vw, 42px); font-weight: 900; margin: 16px 0 12px; }
.hero-inner p { color: var(--txt-2); max-width: 680px; }
.hero-inner .section-tag { margin-bottom: 4px; }

/* ============================================================
   表单
   ============================================================ */
.form-card {
  max-width: 860px; margin: 44px auto 0;
  border: 1px solid var(--line); border-radius: var(--r-lg);
  background: #fff; box-shadow: var(--shadow); padding: 40px 44px;
}
.form-group { margin-bottom: 22px; }
.form-group label { display: block; font-size: 13.5px; font-weight: 600; color: var(--navy); margin-bottom: 9px; letter-spacing: .04em; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 13px 16px;
  border-radius: var(--r-sm); border: 1px solid var(--line-strong);
  background: #fff; color: var(--txt); font-size: 14.5px;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--txt-3); }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none; border-color: var(--navy-2); box-shadow: 0 0 0 4px rgba(47, 90, 168, 0.12);
}
.form-group textarea { min-height: 130px; resize: vertical; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.agreement-group { display: flex; align-items: flex-start; gap: 10px; margin: 4px 0 22px; font-size: 13.5px; color: var(--txt-2); }
.agree-label { display: flex; align-items: flex-start; gap: 9px; cursor: pointer; }
.agree-label input { width: 16px; height: 16px; margin-top: 3px; accent-color: var(--navy); }

/* ============================================================
   认证页
   ============================================================ */
.auth-back {
  position: fixed; top: 26px; left: 30px; z-index: 50;
  display: inline-flex; align-items: center; gap: 7px;
  color: var(--txt-2); font-size: 13.5px; padding: 9px 16px;
  border-radius: 999px; border: 1px solid var(--line); background: rgba(255,255,255,.9);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
}
.auth-back:hover { color: var(--navy); border-color: var(--line-strong); }
.auth-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 90px 20px 60px; }
.auth-card {
  width: min(440px, 100%);
  border: 1px solid var(--line); border-radius: var(--r-lg);
  background: #fff; box-shadow: var(--shadow-hover); padding: 44px 42px;
}
.auth-logo { margin-bottom: 22px; }
.auth-logo span { font-size: 21px; font-weight: 900; letter-spacing: .06em; color: var(--navy); }
.auth-card h2 { font-size: 24px; font-weight: 800; margin-bottom: 6px; }
.auth-sub { color: var(--txt-2); font-size: 14px; margin-bottom: 28px; }
.auth-foot { margin-top: 24px; text-align: center; color: var(--txt-2); font-size: 14px; }
.auth-foot a { color: var(--navy-2); font-weight: 600; }

/* ============================================================
   会员档位
   ============================================================ */
.tier-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 48px; align-items: stretch; }
.tier-card {
  position: relative; border: 1px solid var(--line); border-radius: var(--r-lg);
  background: #fff; box-shadow: 0 4px 16px rgba(18,35,63,.04); padding: 34px 30px;
  transition: transform .28s ease, border-color .28s ease, box-shadow .28s ease;
  display: flex; flex-direction: column;
}
.tier-card:hover { transform: translateY(-6px); border-color: rgba(47,90,168,.4); box-shadow: var(--shadow-hover); }
.tier-card.featured {
  border-color: rgba(47, 90, 168, 0.6);
  background: linear-gradient(170deg, #FFFFFF, #EEF3FA);
  box-shadow: 0 20px 50px rgba(47, 90, 168, 0.18);
}
.tier-badge {
  position: absolute; top: -13px; left: 50%; transform: translateX(-50%);
  font-size: 12px; font-weight: 700; letter-spacing: .08em;
  padding: 5px 16px; border-radius: 999px; background: var(--grad); color: #fff; white-space: nowrap;
}
.tier-name { font-size: 18px; font-weight: 800; }
.tier-price { font-family: var(--mono); font-size: 40px; font-weight: 800; margin: 16px 0 2px; color: var(--navy); }
.tier-price small, .amt-unit { font-size: 15px; color: var(--txt-2); font-family: var(--font); }
.tier-sub { color: var(--txt-3); font-size: 13px; margin-bottom: 22px; }
.tier-list { margin-top: 8px; }
.tier-list li {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 14px; color: var(--txt-2); padding: 9px 0; border-bottom: 1px dashed var(--line);
}
.tier-list li:last-child { border-bottom: none; }
.tier-list li::before { content: "✓"; color: var(--ok); font-weight: 800; flex-shrink: 0; }

.recharge-amounts { display: flex; gap: 12px; flex-wrap: wrap; }
.recharge-amt {
  padding: 12px 24px; border-radius: var(--r-sm);
  border: 1px solid var(--line-strong); background: #fff;
  color: var(--navy); font-size: 15px; font-weight: 600; font-family: var(--mono);
  transition: .2s ease;
}
.recharge-amt:hover { border-color: var(--navy-2); }
.recharge-amt.selected { background: var(--grad); color: #fff; border-color: transparent; box-shadow: 0 8px 22px rgba(47,90,168,.28); }

/* 流程 */
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 48px; }
.process-step { border: 1px solid var(--line); border-radius: var(--r-md); padding: 26px 24px; background: #fff; box-shadow: 0 3px 14px rgba(18,35,63,.04); }
.process-num {
  font-family: var(--mono); font-size: 15px; font-weight: 800; color: var(--navy-2);
  width: 40px; height: 40px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid rgba(47,90,168,.28); background: rgba(47,90,168,.07);
  margin-bottom: 16px;
}
.process-step h3 { font-size: 16px; margin-bottom: 8px; }
.process-step p { font-size: 13.5px; color: var(--txt-2); }
.step-item { display: flex; gap: 16px; }
.step-n { flex-shrink: 0; font-family: var(--mono); font-weight: 800; color: var(--navy-2); }
.step-t { font-weight: 700; }
.step-d { color: var(--txt-2); font-size: 13.5px; }

/* 领域卡 */
.domain-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 48px; }
.domain-card { border: 1px solid var(--line); border-radius: var(--r-md); background: #fff; padding: 26px; box-shadow: 0 3px 14px rgba(18,35,63,.04); transition: .25s ease; }
.domain-card:hover { border-color: rgba(47,90,168,.45); transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.domain-icon { font-size: 24px; margin-bottom: 12px; }
.domain-card h3 { font-size: 16px; margin-bottom: 8px; }
.domain-card p { font-size: 13.5px; color: var(--txt-2); }

/* 模块状态 */
.module-card { border: 1px solid var(--line); border-radius: var(--r-md); background: #fff; padding: 24px; box-shadow: 0 3px 14px rgba(18,35,63,.04); }
.module-desc { font-size: 13px; color: var(--txt-2); margin-top: 6px; }
.module-status { font-size: 12.5px; font-weight: 700; padding: 4px 12px; border-radius: 999px; display: inline-block; }
.module-status.ok { color: var(--ok); background: rgba(31, 157, 99, 0.08); border: 1px solid rgba(31, 157, 99, 0.3); }
.module-status.warn { color: var(--warn); background: rgba(199, 125, 22, 0.08); border: 1px solid rgba(199, 125, 22, 0.3); }

/* FAQ */
.faq-list { max-width: 780px; margin: 48px auto 0; }
.faq-item { border: 1px solid var(--line); border-radius: var(--r-md); background: #fff; margin-bottom: 12px; overflow: hidden; transition: border-color .25s ease; }
.faq-item.open { border-color: rgba(47,90,168,.45); }
.faq-q { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 19px 24px; cursor: pointer; font-weight: 600; font-size: 15.5px; color: var(--navy); user-select: none; }
.faq-icon { flex-shrink: 0; width: 22px; height: 22px; border-radius: 50%; border: 1px solid var(--line-strong); display: flex; align-items: center; justify-content: center; color: var(--txt-2); font-size: 13px; transition: .3s ease; }
.faq-item.open .faq-icon { transform: rotate(45deg); color: var(--navy-2); border-color: var(--navy-2); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
.faq-a p, .faq-a { padding: 0 24px; }
.faq-item.open .faq-a { max-height: 400px; padding-bottom: 20px; }
.faq-a, .faq-a p { color: var(--txt-2); font-size: 14px; }

/* 徽章 */
.badge { display: inline-flex; align-items: center; gap: 6px; font-size: 12.5px; font-weight: 700; padding: 4px 12px; border-radius: 999px; border: 1px solid var(--line); color: var(--txt-2); background: var(--panel-strong); }
.badge.balance { color: var(--warn); border-color: rgba(199,125,22,.35); background: rgba(199,125,22,.07); }
.info-tag { font-size: 12px; font-weight: 700; padding: 3px 11px; border-radius: 999px; }
.info-tag.supply { color: var(--navy-2); border: 1px solid rgba(47,90,168,.32); background: rgba(47,90,168,.06); }
.status-active { color: var(--ok); }

/* ============================================================
   详情页
   ============================================================ */
.detail-main { display: grid; grid-template-columns: 1.7fr 1fr; gap: 24px; margin-top: -20px; }
.detail-overview, .detail-block, .detail-side > *, .detail-related { border: 1px solid var(--line); border-radius: var(--r-lg); background: #fff; box-shadow: 0 3px 16px rgba(18,35,63,.05); }
.detail-overview { padding: 30px 32px; }
.ov-item { display: flex; justify-content: space-between; gap: 18px; padding: 13px 0; border-bottom: 1px dashed var(--line); font-size: 14.5px; }
.ov-item:last-child { border-bottom: none; }
.ov-label { color: var(--txt-3); flex-shrink: 0; }
.ov-value { color: var(--navy); text-align: right; font-weight: 600; }
.ov-value.ov-id { font-family: var(--mono); color: var(--navy-2); }
.detail-block { padding: 28px 32px; margin-top: 20px; }
.detail-block-title { font-size: 17px; font-weight: 800; margin-bottom: 14px; display: flex; align-items: center; gap: 10px; }
.detail-block-title::before { content: ""; width: 4px; height: 18px; border-radius: 2px; background: var(--grad); }
.detail-desc { color: var(--txt-2); font-size: 14.5px; white-space: pre-wrap; }
.detail-notice { margin-top: 20px; padding: 20px 24px; border-radius: var(--r-md); border: 1px dashed rgba(199,125,22,.45); background: rgba(199,125,22,.06); color: #8A5A0F; font-size: 13.5px; }
.detail-steps { margin-top: 14px; }
.detail-mode-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 14px; }
.mode-item { border: 1px solid var(--line); border-radius: var(--r-md); padding: 18px 20px; background: var(--panel-strong); }
.mode-item-t { font-weight: 700; font-size: 14.5px; margin-bottom: 5px; color: var(--navy); }
.mode-item-d { font-size: 13px; color: var(--txt-2); }
.detail-side { display: flex; flex-direction: column; gap: 20px; }
.detail-side > * { padding: 26px 28px; }
.detail-related { margin-top: 24px; padding: 26px 28px; }
.related-top { font-size: 16px; font-weight: 800; margin-bottom: 16px; }
.related-grid { display: grid; gap: 10px; }
.related-card { display: flex; justify-content: space-between; gap: 14px; align-items: center; border: 1px solid var(--line); border-radius: var(--r-sm); padding: 14px 18px; transition: .2s ease; background: #fff; }
.related-card:hover { border-color: rgba(47,90,168,.4); background: var(--panel-strong); }
.related-title { font-size: 14px; font-weight: 600; }
.related-pub { font-size: 12.5px; color: var(--txt-3); }
.related-budget { font-family: var(--mono); font-size: 13px; color: var(--warn); white-space: nowrap; }

.guide-block { text-align: center; border: 1px solid var(--line); border-radius: var(--r-lg); background: #fff; box-shadow: var(--shadow); padding: 60px 30px; max-width: 560px; margin: 0 auto; }
.guide-icon { width: 64px; height: 64px; margin: 0 auto 20px; border-radius: 18px; display: flex; align-items: center; justify-content: center; color: var(--warn); background: rgba(199,125,22,.08); border: 1px solid rgba(199,125,22,.3); }
.guide-block h3 { font-size: 20px; margin-bottom: 8px; }
.guide-block p { color: var(--txt-2); margin-bottom: 22px; }

/* 联系 */
.contact-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 24px; align-items: start; }
.contact-info-card { border: 1px solid var(--line); border-radius: var(--r-lg); background: #fff; box-shadow: var(--shadow); padding: 30px; }
.contact-item { display: flex; gap: 16px; padding: 15px 0; border-bottom: 1px dashed var(--line); }
.contact-item:last-child { border-bottom: none; }
.ci-icon { width: 42px; height: 42px; flex-shrink: 0; border-radius: 12px; display: flex; align-items: center; justify-content: center; color: var(--navy-2); background: rgba(47,90,168,.08); border: 1px solid rgba(47,90,168,.2); }
.ci-label { font-size: 12.5px; color: var(--txt-3); letter-spacing: .06em; }
.ci-value { font-size: 15px; font-weight: 600; color: var(--navy); word-break: break-all; }
.contact-tip { margin-top: 18px; font-size: 13px; color: var(--txt-3); border-top: 1px dashed var(--line); padding-top: 16px; }
.contact-form { border: 1px solid var(--line); border-radius: var(--r-lg); background: #fff; box-shadow: var(--shadow); padding: 30px; }
.search-count { font-size: 13.5px; color: var(--txt-3); }

/* ============================================================
   个人中心
   ============================================================ */
.profile-header {
  display: flex; align-items: center; gap: 22px; flex-wrap: wrap;
  border: 1px solid var(--line); border-radius: var(--r-lg);
  background: linear-gradient(140deg, #FFFFFF, #EEF3FA);
  box-shadow: var(--shadow); padding: 32px 36px; margin-top: -20px;
}
.profile-avatar {
  width: 68px; height: 68px; border-radius: 20px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 26px; font-weight: 900; color: #fff; background: var(--grad);
  box-shadow: 0 10px 26px rgba(47,90,168,.28);
}
.profile-badges { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; }
.profile-info { flex: 1; min-width: 200px; }
.profile-info h2 { font-size: 22px; font-weight: 800; }
.profile-card { border: 1px solid var(--line); border-radius: var(--r-lg); background: #fff; box-shadow: 0 3px 16px rgba(18,35,63,.05); padding: 30px 32px; margin-top: 22px; }
.profile-modules { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 18px; }
.info-item { border: 1px solid var(--line); border-radius: var(--r-md); padding: 18px 20px; background: var(--panel-strong); transition: .2s ease; }
.info-item:hover { border-color: rgba(47,90,168,.4); background: #fff; }
.info-title { font-weight: 700; font-size: 15px; color: var(--navy); }
.info-meta { display: flex; gap: 14px; align-items: center; margin-top: 9px; flex-wrap: wrap; font-size: 12.5px; color: var(--txt-3); }
.info-status { font-weight: 700; }
.my-list-title { font-size: 17px; font-weight: 800; margin: 30px 0 8px; }
.my-list-tip { font-size: 13px; color: var(--txt-3); margin-bottom: 16px; }
.side-notice { border: 1px dashed rgba(199,125,22,.45); background: rgba(199,125,22,.06); border-radius: var(--r-md); padding: 18px 20px; font-size: 13px; color: #8A5A0F; }
.side-notice-t { font-weight: 800; margin-bottom: 6px; }
.offline { color: var(--txt-3); }

/* ============================================================
   弹窗
   ============================================================ */
.modal-overlay {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(18, 35, 63, 0.42);
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden; transition: .28s ease;
}
.modal-overlay.show { opacity: 1; visibility: visible; }
.modal-box {
  width: min(420px, 92%); text-align: center;
  border: 1px solid var(--line); border-radius: var(--r-lg);
  background: #fff; box-shadow: var(--shadow-hover); padding: 36px 34px;
  transform: translateY(16px) scale(.97); transition: .28s ease;
}
.modal-overlay.show .modal-box { transform: none; }
.modal-box h3 { font-size: 20px; font-weight: 800; margin-bottom: 8px; }
.modal-desc { color: var(--txt-2); font-size: 13.5px; margin-bottom: 20px; }
.modal-qr { display: flex; justify-content: center; margin-bottom: 18px; }
.modal-qr img { width: 190px; height: 190px; border-radius: var(--r-md); border: 1px solid var(--line); }
.modal-amount { font-size: 15px; color: var(--txt-2); margin-bottom: 22px; }
.modal-amount strong { font-family: var(--mono); font-size: 26px; color: var(--navy); }
.modal-check { margin: 10px 0 16px; font-size: 13px; color: var(--txt-2); text-align: left; }
.modal-textarea { width: 100%; min-height: 90px; border-radius: var(--r-sm); border: 1px solid var(--line-strong); background: #fff; color: var(--txt); padding: 12px 14px; font-size: 14px; margin-bottom: 14px; }
.modal-textarea:focus { outline: none; border-color: var(--navy-2); box-shadow: 0 0 0 4px rgba(47,90,168,.12); }
.modal-reason-quick { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.modal-reason-quick button { font-size: 12px; padding: 6px 12px; border-radius: 999px; border: 1px solid var(--line-strong); background: #fff; color: var(--txt-2); }
.modal-reason-quick button:hover { border-color: var(--navy-2); color: var(--navy-2); }
.modal-danger h3 { color: var(--bad); }

/* ============================================================
   Toast
   ============================================================ */
.toast {
  position: fixed; top: 88px; left: 50%; z-index: 300;
  transform: translate(-50%, -18px);
  padding: 12px 26px; border-radius: 999px;
  background: var(--navy); color: #fff;
  box-shadow: var(--shadow-hover); font-size: 14px; font-weight: 500;
  opacity: 0; visibility: hidden; transition: .3s ease; max-width: 86vw;
}
.toast.show { opacity: 1; visibility: visible; transform: translate(-50%, 0); }
.toast.error { background: var(--bad); }
.toast.success { background: var(--ok); }

/* ============================================================
   管理后台
   ============================================================ */
.admin-bar { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; border: 1px solid var(--line); border-radius: var(--r-md); background: #fff; padding: 16px 22px; margin-bottom: 22px; box-shadow: 0 3px 14px rgba(18,35,63,.04); }
.admin-bar-tip { font-size: 13px; color: var(--txt-3); }
.admin-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.admin-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 24px; }
.admin-stat { border: 1px solid var(--line); border-radius: var(--r-md); background: #fff; padding: 20px 22px; box-shadow: 0 3px 14px rgba(18,35,63,.04); }
.admin-stat.ok { border-color: rgba(31,157,99,.35); }
.admin-stat.warn { border-color: rgba(199,125,22,.35); }
.admin-stat.info { border-color: rgba(47,90,168,.35); }
.as-num { font-family: var(--mono); font-size: 28px; font-weight: 800; color: var(--navy); }
.admin-stat.ok .as-num { color: var(--ok); }
.admin-stat.warn .as-num { color: var(--warn); }
.admin-stat.info .as-num { color: var(--navy-2); }
.as-label { font-size: 12.5px; color: var(--txt-3); letter-spacing: .06em; }
.admin-tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 22px; }
.admin-tab {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 20px; border-radius: 999px;
  border: 1px solid var(--line-strong); background: #fff;
  color: var(--txt-2); font-size: 14px; font-weight: 600; transition: .2s ease;
}
.admin-tab:hover { color: var(--navy); border-color: var(--navy-2); }
.admin-tab.active { background: var(--grad); color: #fff; border-color: transparent; }
.tab-count { font-family: var(--mono); font-size: 12px; padding: 1px 9px; border-radius: 999px; background: var(--panel-strong); border: 1px solid var(--line); }
.admin-tab.active .tab-count { background: rgba(255,255,255,.2); border-color: transparent; color: #fff; }
.admin-search { max-width: 340px; margin-bottom: 18px; }
.admin-search input { width: 100%; padding: 11px 16px; border-radius: 999px; border: 1px solid var(--line-strong); background: #fff; color: var(--txt); font-size: 14px; }
.admin-search input:focus { outline: none; border-color: var(--navy-2); box-shadow: 0 0 0 4px rgba(47,90,168,.1); }
.admin-list { display: flex; flex-direction: column; gap: 12px; }
.admin-item { border: 1px solid var(--line); border-radius: var(--r-md); background: #fff; padding: 20px 24px; box-shadow: 0 3px 14px rgba(18,35,63,.04); transition: border-color .2s ease; }
.admin-item:hover { border-color: rgba(47,90,168,.35); }
.admin-item-head { display: flex; align-items: center; justify-content: space-between; gap: 14px; flex-wrap: wrap; }
.admin-item-title { font-weight: 700; font-size: 15.5px; color: var(--navy); }
.admin-item-meta { display: flex; gap: 14px; flex-wrap: wrap; font-size: 12.5px; color: var(--txt-3); font-family: var(--mono); }
.admin-item-desc { font-size: 13.5px; color: var(--txt-2); margin-top: 10px; }
.admin-item-reason { margin-top: 12px; font-size: 13px; color: var(--bad); border-left: 3px solid rgba(196,57,75,.5); padding: 6px 14px; background: rgba(196,57,75,.05); border-radius: 0 var(--r-sm) var(--r-sm) 0; }
.admin-edited-tag { font-size: 11px; font-weight: 700; color: var(--warn); border: 1px solid rgba(199,125,22,.4); padding: 2px 9px; border-radius: 999px; }
.admin-btn { font-size: 12.5px; font-weight: 600; padding: 7px 15px; border-radius: 999px; border: 1px solid var(--line-strong); background: #fff; color: var(--txt-2); transition: .2s ease; }
.admin-btn:hover { color: var(--navy); border-color: var(--navy-2); }
.admin-btn.ok { color: var(--ok); border-color: rgba(31,157,99,.4); }
.admin-btn.ok:hover { background: rgba(31,157,99,.08); }
.admin-btn.reject, .admin-btn.del { color: var(--bad); border-color: rgba(196,57,75,.4); }
.admin-btn.reject:hover, .admin-btn.del:hover { background: rgba(196,57,75,.08); }
.admin-btn.edit { color: var(--navy-2); border-color: rgba(47,90,168,.4); }
.admin-btn.edit:hover { background: rgba(47,90,168,.07); }
.admin-btn.link { color: var(--navy); border-color: rgba(27,42,74,.4); }
.admin-btn.offline { color: var(--warn); border-color: rgba(199,125,22,.4); }
.admin-user-item { border: 1px solid var(--line); border-radius: var(--r-md); background: #fff; padding: 18px 22px; box-shadow: 0 3px 14px rgba(18,35,63,.04); }
.au-name { font-weight: 700; font-size: 15px; color: var(--navy); }
.au-tags { display: flex; gap: 7px; flex-wrap: wrap; margin-top: 7px; }
.au-tag { font-size: 11.5px; padding: 2px 10px; border-radius: 999px; border: 1px solid var(--line); color: var(--txt-3); }
.au-meta { margin-top: 9px; font-size: 12.5px; color: var(--txt-3); font-family: var(--mono); }

/* ============================================================
   法务文档页
   ============================================================ */
.legal-doc { max-width: 860px; margin: 0 auto; }
.legal-doc h1 { font-size: 28px; font-weight: 900; margin-bottom: 6px; }
.legal-update { font-size: 13px; color: var(--txt-3); margin-bottom: 34px; font-family: var(--mono); }
.legal-h2 { font-size: 19px; font-weight: 800; margin: 38px 0 14px; padding-left: 14px; position: relative; }
.legal-h2::before { content: ""; position: absolute; left: 0; top: 6px; bottom: 6px; width: 4px; border-radius: 2px; background: var(--grad); }
.legal-doc p { color: var(--txt-2); font-size: 14.5px; margin-bottom: 12px; }
.legal-doc ul { margin: 0 0 14px 4px; }
.legal-doc li { color: var(--txt-2); font-size: 14.5px; padding-left: 20px; position: relative; margin-bottom: 8px; }
.legal-doc li::before { content: "▸"; position: absolute; left: 0; color: var(--navy-2); }

/* ============================================================
   补充
   ============================================================ */
.detail-title { font-size: clamp(21px, 2.4vw, 27px); font-weight: 800; line-height: 1.4; margin-bottom: 6px; color: var(--navy); }
.modal-box.wide { width: min(560px, 92%); text-align: left; }
.modal-box.wide h3 { margin-bottom: 14px; }
.modal-box.wide .admin-btn { display: inline-block; }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1024px) {
  .hero > .container { grid-template-columns: 1fr; gap: 44px; }
  .hero-content { max-width: 640px; }
  .feature-card, .feature-card:nth-child(n) { grid-column: span 6; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .tier-grid { grid-template-columns: 1fr; max-width: 480px; margin-left: auto; margin-right: auto; }
  .detail-main { grid-template-columns: 1fr; }
  .profile-modules { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr 1fr; }
}
@media (max-width: 860px) {
  .nav-toggle { display: flex; }
  .nav-menu {
    position: fixed; top: 72px; left: 0; right: 0; z-index: 99;
    flex-direction: column; align-items: stretch; gap: 4px;
    background: #fff; border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow); padding: 18px 5%;
    transform: translateY(-12px); opacity: 0; visibility: hidden; transition: .28s ease;
  }
  .nav-menu.open { transform: none; opacity: 1; visibility: visible; }
  .nav-menu a:not(.btn) { display: block; padding: 13px 18px; }
  #navAuth { flex-direction: column; align-items: stretch; }
}
@media (max-width: 640px) {
  .section { padding: 68px 0; }
  .info-card { grid-template-columns: 1fr; grid-template-rows: auto; gap: 10px; padding: 20px; }
  .info-card > .info-card-top { grid-column: 1; grid-row: auto; flex-direction: row; align-items: center; justify-content: space-between; width: 100%; }
  .info-card > h3 { grid-column: 1; grid-row: auto; }
  .info-card > .info-desc { grid-column: 1; grid-row: auto; }
  .info-card > .info-publisher { grid-column: 1; grid-row: auto; align-items: flex-start; text-align: left; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 28px; }
  .stat-item + .stat-item::before { display: none; }
  .services-grid, .process-grid, .domain-grid, .profile-modules { grid-template-columns: 1fr; }
  .feature-card, .feature-card:nth-child(n) { grid-column: span 12; }
  .form-card, .auth-card, .detail-overview, .detail-block { padding: 26px 22px; }
  .form-row { grid-template-columns: 1fr; }
  .detail-mode-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 26px; }
  .hero { padding: 74px 0 56px; }
  .admin-stats { grid-template-columns: repeat(2, 1fr); }
  .footer-bottom { justify-content: center; text-align: center; }
}

/* 步骤正文容器 */
.step-body { display: block; }
.step-body .step-t { color: var(--navy); }

/* ---------- 页脚备案号官方查询链接 ---------- */
.footer-icp a {
  display: inline-flex; align-items: center; gap: 6px;
  color: inherit; text-decoration: none;
  border-bottom: 1px dashed rgba(255,255,255,.35);
  transition: color .2s ease, border-color .2s ease;
}
.footer-icp a::after { content: "↗"; font-size: 11px; opacity: .7; }
.footer-icp a:hover { color: #fff; border-bottom-color: #fff; }

/* ============================================================
   2026-08-30 补丁
   ============================================================ */

/* ① 导航/页脚/登录 logo 改为公司全称（13 字），缩字号、紧排版，避免挤压菜单 */
.nav-logo span { font-size: 14.5px; font-weight: 800; letter-spacing: 0.01em; padding-left: 16px; }
.nav-logo span::before { width: 8px; height: 8px; }
.auth-logo span { font-size: 15px; font-weight: 800; letter-spacing: 0.01em; }
.footer .nav-logo span { font-size: 15px; }
@media (max-width: 860px) {
  .nav-logo span { font-size: 12.5px; }
}

/* ② 详情页：相关推荐卡片（related-card）原 flex-row 把内部 3 个块横向排了，改纵向 */
.related-card { display: block; padding: 14px 18px; }
.related-card > .related-top {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 8px; font-size: 12px; font-weight: 700; letter-spacing: 0; color: var(--txt-2);
}
.related-card > .related-top .info-type-tag { font-size: 11px; padding: 4px 10px; }
.related-card > .related-top .related-budget { font-size: 12px; }
.related-card h4 {
  font-size: 14.5px; font-weight: 600; color: var(--navy);
  line-height: 1.5; margin: 4px 0; word-break: break-word;
}
.related-card .related-pub { font-size: 12.5px; color: var(--txt-3); }

/* ③ 详情页右侧联系信息卡内的 <h3> 缺样式，浏览器默认过大 */
.contact-info-card > h3 {
  font-size: 15px; font-weight: 800; color: var(--navy);
  margin: 0 0 16px; padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

/* ④ 详情页步骤项：保留原有纵向布局 */
.detail-steps { display: flex; flex-direction: column; gap: 14px; }

/* ⑤ 法务页"最近更新日期"行视觉强化 */
.legal-update { color: var(--txt-2); }

/* ============================================================
   2026-08-30 · 详情页排版重构
   坑点：.detail-main 是「左侧内层容器」，却被定义成 2 列 Grid，
   导致标题 + 4 个内容块被 auto-flow 散成 2×3；且外层 .contact-grid
   侧栏(1.15fr)比正文(1fr)还宽。以下为针对性覆盖。
   ============================================================ */

/* ① 外层两栏：正文更宽、侧栏更窄（仅详情页，不影响 contact.html） */
#detailRoot > .contact-grid { grid-template-columns: 1.75fr 1fr; gap: 24px; }

/* ② 正文容器改为单列纵向堆叠（关键修复） */
.detail-main { display: block; margin-top: 0; }

/* ③ 顶部概览：5 项元信息改横向条带，不再竖着吃掉整屏高度 */
.detail-overview {
  display: grid; grid-template-columns: repeat(5, 1fr);
  gap: 0; padding: 18px 8px; margin-bottom: 24px;
}
.detail-overview .ov-item {
  flex-direction: column; align-items: center; justify-content: center;
  gap: 4px; padding: 8px 14px;
  border-bottom: none; border-right: 1px dashed var(--line);
}
.detail-overview .ov-item:last-child { border-right: none; }
.detail-overview .ov-label { font-size: 12.5px; letter-spacing: .04em; }
.detail-overview .ov-value { text-align: center; font-weight: 700; font-size: 14.5px; }

/* ④ 正文块：统一间距，标题与首块拉齐 */
.detail-main .detail-title { margin-bottom: 18px; }
.detail-main .detail-block:first-of-type { margin-top: 0; }

/* ⑤ 相关推荐：3 张卡横向并排（原来是竖着堆在页面底部） */
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 28px; }

/* ⑥ 侧栏固定定位，滚动时跟随（桌面端） */
@media (min-width: 1025px) {
  .detail-side { position: sticky; top: 92px; }
}

/* ⑦ 响应式 */
@media (max-width: 1024px) {
  #detailRoot > .contact-grid { grid-template-columns: 1fr; }
  .detail-overview { grid-template-columns: repeat(3, 1fr); }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .detail-side { position: static; }
}
@media (max-width: 640px) {
  .detail-overview { grid-template-columns: repeat(2, 1fr); padding: 12px 4px; }
  .detail-overview .ov-item { border-right: none; border-bottom: 1px dashed var(--line); }
  .related-grid { grid-template-columns: 1fr; }
}