@charset "UTF-8";
/* ==========================================================================
   标探云脑官网 - 全站设计系统
   Tech-AI Theme v2.0   2026-09-24
   ========================================================================== */

/* ---------- 1. 变量 ---------- */
:root {
  /* 品牌主色 */
  --brand: #3b5bff;
  --brand-600: #3550e8;
  --brand-700: #2a41c8;
  --brand-2: #7c3aed;
  --brand-soft: #eef1ff;
  --grad: linear-gradient(135deg, #3b5bff 0%, #7c3aed 100%);
  --grad-soft: linear-gradient(135deg, #eef1ff 0%, #f5efff 100%);
  --grad-cyan: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);

  /* 辅助色 */
  --cyan: #06b6d4;
  --emerald: #10b981;
  --amber: #f59e0b;
  --rose: #f43f5e;

  /* 中性色 */
  --ink: #0f172a;
  --deep: #121b31;
  --deep-2: #1a2440;
  --deep-3: #223057;
  --bg: #fbfcff;
  --bg-alt: #f4f7ff;
  --surface: #ffffff;
  --line: #e8ecf6;
  --line-strong: #d6deef;
  --text: #0f172a;
  --text-2: #475569;
  --text-3: #94a3b8;

  /* 尺寸 */
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --pill: 999px;
  --header-h: 72px;
  --maxw: 1200px;

  /* 阴影 */
  --shadow-xs: 0 1px 2px rgba(15, 23, 42, .04);
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, .05);
  --shadow: 0 8px 24px rgba(15, 23, 42, .07);
  --shadow-lg: 0 18px 48px rgba(15, 23, 42, .12);
  --shadow-brand: 0 10px 28px rgba(59, 91, 255, .28);
  --shadow-glow: 0 0 0 1px rgba(59, 91, 255, .12), 0 12px 32px rgba(59, 91, 255, .12);

  /* 字体 */
  --font: "Inter", -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans SC",
    "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
  --font-num: "Inter", "DIN Alternate", "Helvetica Neue", Arial, sans-serif;
}

/* ---------- 2. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
h1, h2, h3, h4, h5, h6 { margin: 0 0 .6em; font-weight: 700; line-height: 1.35; letter-spacing: -.01em; }
p { margin: 0 0 1em; }
a { color: var(--brand); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--brand-700); }
img { max-width: 100%; height: auto; display: block; border: 0; }
ul, ol { margin: 0 0 1em; padding-left: 1.4em; }
li { margin-bottom: .35em; }
strong, b { font-weight: 700; color: var(--ink); }
button { font-family: inherit; cursor: pointer; }
table { border-collapse: collapse; width: 100%; }
input, textarea, select { font-family: inherit; font-size: inherit; }
svg { display: block; }
:focus-visible { outline: 2px solid var(--brand); outline-offset: 3px; border-radius: 4px; }
::selection { background: rgba(59, 91, 255, .16); }

/* ---------- 3. 布局工具 ---------- */
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 880px; }
.section { padding: 88px 0; position: relative; }
.section-sm { padding: 56px 0; }
.section-alt { background: var(--bg-alt); }
.section-deep { background: var(--deep); color: #fff; }
.grid { display: grid; gap: 24px; }
.g-2 { grid-template-columns: repeat(2, 1fr); }
.g-3 { grid-template-columns: repeat(3, 1fr); }
.g-4 { grid-template-columns: repeat(4, 1fr); }
.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; }
.mb-0 { margin-bottom: 0; } .mb-24 { margin-bottom: 24px; } .mb-40 { margin-bottom: 40px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }

/* ---------- 4. 文字与装饰 ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12px; font-weight: 700; letter-spacing: .16em; text-transform: uppercase;
  color: var(--brand); background: var(--brand-soft);
  padding: 6px 14px; border-radius: var(--pill); margin-bottom: 18px;
}
.eyebrow::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--grad); }
.section-deep .eyebrow { background: rgba(255, 255, 255, .1); color: #a9bcff; }
.section-deep .eyebrow::before { background: #6f8cff; }
.section-title { font-size: clamp(1.6rem, 3.4vw, 2.3rem); margin-bottom: 14px; }
.section-sub { color: var(--text-2); font-size: 1.05rem; max-width: 720px; margin: 0 auto 0; }
.section-deep .section-sub { color: #a9b4cc; }
.section-head { text-align: center; margin-bottom: 48px; }
.section-head.left { text-align: left; }
.section-head.left .section-sub { margin-left: 0; }
.grad-text {
  background: var(--grad); -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.deep .grad-text, .section-deep .grad-text {
  background: linear-gradient(135deg, #8fa6ff 0%, #c4a8ff 100%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.num-font { font-family: var(--font-num); font-variant-numeric: tabular-nums; letter-spacing: -.02em; }

/* ---------- 5. 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 26px; border: 0; border-radius: var(--pill);
  font-size: .95rem; font-weight: 600; line-height: 1.2; white-space: nowrap;
  transition: transform .22s ease, box-shadow .22s ease, background .22s ease, opacity .2s;
}
.btn svg { width: 18px; height: 18px; }
.btn-primary { background: var(--grad); color: #fff; box-shadow: var(--shadow-brand); background-size: 160% 160%; }
.btn-primary:hover { color: #fff; transform: translateY(-2px); box-shadow: 0 14px 34px rgba(59, 91, 255, .38); }
.btn-outline { background: #fff; color: var(--ink); border: 1px solid var(--line-strong); }
.btn-outline:hover { color: var(--brand); border-color: var(--brand); transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.btn-ghost-deep { background: rgba(255, 255, 255, .08); color: #fff; border: 1px solid rgba(255, 255, 255, .22); }
.btn-ghost-deep:hover { background: rgba(255, 255, 255, .16); color: #fff; transform: translateY(-2px); }
.btn-white { background: #fff; color: var(--brand); box-shadow: var(--shadow); }
.btn-white:hover { color: var(--brand-700); transform: translateY(-2px); }
.btn-sm { padding: 9px 18px; font-size: .85rem; }
.btn-block { width: 100%; }
.btn-row { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.btn-row.center { justify-content: center; }

/* 链接箭头 */
.link-arrow { display: inline-flex; align-items: center; gap: 5px; font-weight: 600; font-size: .95rem; }
.link-arrow svg { width: 16px; height: 16px; transition: transform .22s ease; }
.link-arrow:hover svg { transform: translateX(4px); }

/* ---------- 6. 页头导航 ---------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000; height: var(--header-h);
  display: flex; align-items: center;
  background: rgba(255, 255, 255, .82);
  backdrop-filter: saturate(180%) blur(14px); -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: box-shadow .25s ease, background .25s ease, border-color .25s ease;
}
.site-header.is-stuck { box-shadow: var(--shadow-sm); border-bottom-color: var(--line); background: rgba(255, 255, 255, .92); }
.header-inner { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; display: flex; align-items: center; gap: 24px; }
.brand { display: flex; align-items: center; gap: 10px; font-size: 1.22rem; font-weight: 800; color: var(--ink); letter-spacing: -.02em; flex: none; }
.brand:hover { color: var(--ink); }
.brand-mark {
  width: 34px; height: 34px; border-radius: 10px; background: var(--grad); flex: none; overflow: hidden;
  display: grid; place-items: center; box-shadow: 0 6px 16px rgba(59, 91, 255, .32);
}
.brand-mark svg { width: 20px; height: 20px; color: #fff; }
.brand-mark img { width: 100%; height: 100%; object-fit: contain; display: block; }
.brand-sub { font-size: 11px; font-weight: 600; color: var(--text-3); letter-spacing: .1em; text-transform: uppercase; display: none; }

.nav { margin-left: auto; }
.nav-list { display: flex; align-items: center; gap: 2px; list-style: none; margin: 0; padding: 0; }
.nav-list > li { position: relative; margin: 0; }
.nav-link {
  display: flex; align-items: center; gap: 4px; padding: 9px 14px; border-radius: var(--pill);
  font-size: .93rem; font-weight: 500; color: var(--text-2); white-space: nowrap;
  transition: color .2s, background .2s;
}
.nav-link:hover, .nav-link.is-active { color: var(--brand); background: var(--brand-soft); }
.nav-link .caret { width: 14px; height: 14px; opacity: .6; transition: transform .2s; }
.nav-list > li:hover .caret { transform: rotate(180deg); }
.nav-cta { margin-left: 8px; display: flex; align-items: center; }

.dropdown-menu {
  position: absolute; top: calc(100% + 10px); left: 50%; transform: translateX(-50%) translateY(6px);
  width: max-content; min-width: 0; max-width: 320px; padding: 8px; margin: 0; list-style: none;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow-lg); opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity .2s ease, transform .2s ease, visibility .2s;
}
.dropdown-menu::before { content: ""; position: absolute; top: -12px; left: 0; right: 0; height: 12px; }
.nav-list > li:hover .dropdown-menu { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); pointer-events: auto; }
.dropdown-menu a {
  display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-radius: var(--radius-sm);
  font-size: .9rem; color: var(--text-2); font-weight: 500; white-space: nowrap;
}
.dropdown-menu a:hover { background: var(--bg-alt); color: var(--brand); }
.dropdown-menu a svg { width: 16px; height: 16px; color: var(--brand); flex: none; }

.hamburger {
  display: none; width: 42px; height: 42px; border: 1px solid var(--line-strong); border-radius: 12px;
  background: #fff; align-items: center; justify-content: center; margin-left: auto;
}
.hamburger svg { width: 20px; height: 20px; color: var(--ink); }

/* 移动端抽屉 */
.drawer {
  position: fixed; inset: 0; z-index: 1100; background: rgba(11, 18, 32, .5);
  backdrop-filter: blur(4px); opacity: 0; visibility: hidden; transition: opacity .25s, visibility .25s;
}
.drawer.is-open { opacity: 1; visibility: visible; }
.drawer-panel {
  position: absolute; top: 0; right: 0; bottom: 0; width: min(86vw, 380px);
  background: #fff; padding: 80px 24px 32px; overflow-y: auto;
  transform: translateX(100%); transition: transform .28s cubic-bezier(.4, 0, .2, 1);
}
.drawer.is-open .drawer-panel { transform: translateX(0); }
.drawer-close { position: absolute; top: 18px; right: 20px; width: 40px; height: 40px; border: 0; background: var(--bg-alt); border-radius: 12px; display: grid; place-items: center; }
.drawer-close svg { width: 20px; height: 20px; color: var(--ink); }
.drawer-nav { list-style: none; margin: 0 0 24px; padding: 0; }
.drawer-nav > li { border-bottom: 1px solid var(--line); }
.drawer-nav a, .drawer-nav .drawer-toggle {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  padding: 15px 4px; font-size: 1rem; font-weight: 600; color: var(--ink); background: none; border: 0; width: 100%; text-align: left;
}
.drawer-nav a { color: var(--text-2); }
.drawer-nav .drawer-toggle svg:last-child { width: 16px; height: 16px; color: var(--text-3); transition: transform .2s; }
.drawer-nav li.is-open .drawer-toggle svg:last-child { transform: rotate(180deg); }
.drawer-sub { list-style: none; margin: 0; padding: 0 0 12px 12px; display: none; }
.drawer-nav li.is-open .drawer-sub { display: block; }
.drawer-sub a { padding: 10px 4px; font-size: .92rem; font-weight: 500; }
.drawer .btn { margin-top: 8px; }

/* ---------- 7. Hero ---------- */
.hero {
  position: relative; overflow: hidden; padding: calc(var(--header-h) + 76px) 0 92px;
  background: radial-gradient(1200px 620px at 12% -10%, #27356a 0%, transparent 60%),
              radial-gradient(900px 520px at 88% 8%, #2e2363 0%, transparent 62%),
              linear-gradient(170deg, var(--deep) 0%, var(--deep-2) 55%, #162244 100%);
  color: #fff;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(circle at 50% 30%, #000 0%, transparent 72%);
          mask-image: radial-gradient(circle at 50% 30%, #000 0%, transparent 72%);
  pointer-events: none;
}
.hero-glow {
  position: absolute; width: 460px; height: 460px; border-radius: 50%; filter: blur(90px);
  opacity: .5; pointer-events: none; animation: float 16s ease-in-out infinite;
}
.hero-glow.a { background: #3b5bff; top: -140px; left: -80px; }
.hero-glow.b { background: #7c3aed; bottom: -180px; right: -60px; animation-delay: -6s; }
@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(26px, -22px) scale(1.06); }
}
.hero-inner { position: relative; z-index: 2; display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px; padding: 7px 14px 7px 8px; border-radius: var(--pill);
  background: rgba(255, 255, 255, .08); border: 1px solid rgba(255, 255, 255, .16);
  font-size: .82rem; color: #cfd8ff; margin-bottom: 22px;
}
.hero-badge b { color: #fff; font-weight: 600; }
.hero-badge .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--emerald); box-shadow: 0 0 0 4px rgba(16, 185, 129, .22); margin-left: 4px; }
.hero h1 { font-size: clamp(2rem, 4.4vw, 3.15rem); line-height: 1.22; margin-bottom: 20px; letter-spacing: -.02em; color: #fff; }
.hero-lead { font-size: 1.08rem; color: #b8c2dd; max-width: 620px; margin-bottom: 26px; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 32px; list-style: none; padding: 0; }
.hero-tags li {
  margin: 0; padding: 6px 14px; font-size: .85rem; color: #d3dbf5;
  background: rgba(255, 255, 255, .07); border: 1px solid rgba(255, 255, 255, .13); border-radius: var(--pill);
}
.hero-note { margin-top: 18px; font-size: .85rem; color: #8f9cc0; }
.hero-note b { color: #cfd8ff; font-weight: 600; }

/* 二维码卡 */
.qr-card {
  background: linear-gradient(165deg, rgba(255, 255, 255, .1), rgba(255, 255, 255, .04));
  border: 1px solid rgba(255, 255, 255, .16); border-radius: var(--radius-lg);
  padding: 26px; text-align: center; backdrop-filter: blur(10px);
  box-shadow: 0 24px 60px rgba(0, 0, 0, .34); position: relative; overflow: hidden;
}
.qr-card::after {
  content: ""; position: absolute; top: -40%; left: -20%; width: 140%; height: 60%;
  background: linear-gradient(180deg, rgba(255, 255, 255, .14), transparent); pointer-events: none;
}
.qr-card img.qr {
  width: 176px; height: 176px; margin: 0 auto 14px; border-radius: 14px;
  background: #fff; padding: 8px; box-shadow: 0 8px 22px rgba(0, 0, 0, .22);
}
.qr-card .qr-title { font-weight: 700; font-size: 1.02rem; color: #fff; margin-bottom: 6px; }
.qr-card .qr-desc { font-size: .86rem; color: #aab5d4; line-height: 1.6; margin-bottom: 14px; }
.qr-card .qr-meta { display: flex; justify-content: center; gap: 18px; font-size: .8rem; color: #9aa6c8; border-top: 1px solid rgba(255, 255, 255, .12); padding-top: 14px; margin-top: 4px; }
.qr-step { display: flex; gap: 10px; align-items: center; justify-content: center; text-align: center; margin-top: 14px; font-size: .85rem; color: #b8c2dd; }
.qr-step span { width: 20px; height: 20px; border-radius: 50%; background: rgba(255, 255, 255, .14); display: grid; place-items: center; font-size: .72rem; flex: none; }

/* 浅色版二维码卡（用于浅色区块） */
.qr-card.light {
  background: linear-gradient(165deg, #eef2ff, #f7f4ff);
  border-color: var(--line); color: var(--text); box-shadow: var(--shadow);
}
.qr-card.light .qr-title { color: var(--ink); }
.qr-card.light .qr-desc, .qr-card.light .qr-step { color: var(--text-2); }
.qr-card.light .qr-step span { background: #fff; color: var(--brand); }
.qr-card.light .qr-meta { color: var(--text-3); border-top-color: var(--line); }

/* ---------- 8. 数据条 ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.stat { text-align: center; padding: 6px 10px; }
.stat .v { font-family: var(--font-num); font-size: clamp(1.7rem, 3.2vw, 2.4rem); font-weight: 800; line-height: 1.1; letter-spacing: -.02em; }
.stat .l { font-size: .88rem; color: var(--text-2); margin-top: 6px; }
.section-deep .stat .l { color: #9aa6c8; }
.stats-wrap {
  position: relative; z-index: 3; margin-top: -56px; margin-bottom: 64px;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  box-shadow: var(--shadow); padding: 30px 20px;
}
.stats-wrap .stat + .stat { border-left: 1px solid var(--line); }
.stat .v.grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }

/* ---------- 9. 卡片体系 ---------- */
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px; transition: transform .26s cubic-bezier(.4, 0, .2, 1), box-shadow .26s ease, border-color .26s ease;
  position: relative; overflow: hidden;
}
.card::before {
  content: ""; position: absolute; top: 0; left: 24px; right: 24px; height: 3px; border-radius: 0 0 3px 3px;
  background: var(--grad); opacity: 0; transition: opacity .26s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: rgba(59, 91, 255, .28); }
.card:hover::before { opacity: 1; }
.card h3 { font-size: 1.08rem; margin-bottom: 10px; display: flex; align-items: center; gap: 10px; }
.card p { color: var(--text-2); font-size: .95rem; margin-bottom: 0; }
.card ul { color: var(--text-2); font-size: .93rem; margin-bottom: 0; }
.card.center .icon-box { margin-left: auto; margin-right: auto; }
.card.center h3 { justify-content: center; }
/* 同排卡片描述统一为固定行数，保证每行卡片视觉对齐 */
.grid > .card p { display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; min-height: calc(3 * 1.65em); }
.grid > .adv-card p { -webkit-line-clamp: 4; min-height: calc(4 * 1.65em); }
.grid.g-4 > .adv-card p { -webkit-line-clamp: 3; min-height: calc(3 * 1.65em); }

.icon-box {
  width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center;
  background: var(--grad-soft); border: 1px solid rgba(59, 91, 255, .14); margin-bottom: 16px;
}
.icon-box svg { width: 26px; height: 26px; color: var(--brand); }
.icon-box.cyan { background: linear-gradient(135deg, #e6fbff, #eef4ff); border-color: rgba(6, 182, 212, .2); }
.icon-box.cyan svg { color: #0891b2; }
.icon-box.emerald { background: linear-gradient(135deg, #e7fbf2, #effaf5); border-color: rgba(16, 185, 129, .2); }
.icon-box.emerald svg { color: #059669; }
.icon-box.violet { background: linear-gradient(135deg, #f4efff, #f3effe); border-color: rgba(124, 58, 237, .2); }
.icon-box.violet svg { color: var(--brand-2); }
.icon-box.sm { width: 40px; height: 40px; border-radius: 11px; margin-bottom: 0; flex: none; }
.icon-box.sm svg { width: 20px; height: 20px; }

/* 功能卡 */
.feature-card { display: flex; flex-direction: column; }
.feature-card .fc-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.tag {
  display: inline-block; padding: 4px 11px; border-radius: var(--pill);
  font-size: .76rem; font-weight: 600; background: var(--brand-soft); color: var(--brand-700);
}
.tag.gray { background: var(--bg-alt); color: var(--text-2); }
.tag.cyan { background: #e6fbff; color: #0e7490; }
.tag.emerald { background: #e7fbf2; color: #047857; }
.tag.violet { background: #f4efff; color: #6d28d9; }
.tag.amber { background: #fff6e6; color: #b45309; }

/* 优势卡 */
.adv-card { text-align: left; }
.adv-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.adv-card h3 { margin: 0; font-size: 1.05rem; }
.adv-num { font-family: var(--font-num); font-size: 1.35rem; font-weight: 800; letter-spacing: -.02em; }
.adv-num.up { color: var(--emerald); }
.adv-num.brand { background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.adv-num.cyan { color: #0891b2; }
.adv-compare { margin-top: 14px; padding-top: 14px; border-top: 1px dashed var(--line-strong); font-size: .88rem; color: var(--text-3); }
.adv-compare b { color: var(--text-2); }

/* 案例卡 */
.case-card .case-tag { margin-bottom: 12px; }
.case-card h3 { font-size: 1.02rem; }
.case-meta { display: flex; gap: 16px; margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--line); font-size: .85rem; color: var(--text-3); flex-wrap: wrap; }
.case-meta b { font-family: var(--font-num); color: var(--brand); font-size: 1.05rem; }
.case-flow { margin: 14px 0 0; padding: 0; list-style: none; font-size: .88rem; color: var(--text-2); }
.case-flow li { display: flex; gap: 8px; margin-bottom: 6px; }
.case-flow li::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--brand); flex: none; margin-top: 9px; }

/* ---------- 10. 步骤 ---------- */
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; counter-reset: s; }
.step-item { position: relative; text-align: left; }
.step-num {
  width: 44px; height: 44px; border-radius: 14px; background: var(--grad); color: #fff;
  display: grid; place-items: center; font-family: var(--font-num); font-weight: 800; font-size: 1.1rem;
  margin-bottom: 14px; box-shadow: 0 8px 20px rgba(59, 91, 255, .26);
}
.step-item h3 { font-size: .98rem; margin-bottom: 8px; }
.step-item p { font-size: .88rem; color: var(--text-2); margin: 0; }
.step-tip { display: inline-block; margin-top: 8px; font-size: .8rem; color: #b45309; background: #fff6e6; border-radius: 8px; padding: 4px 9px; }
.steps-line { position: relative; }
.steps-line::before {
  content: ""; position: absolute; top: 22px; left: 4%; right: 4%; height: 2px; z-index: 0;
  background: linear-gradient(90deg, rgba(59, 91, 255, .25), rgba(124, 58, 237, .25));
}
.steps-line .step-num { position: relative; z-index: 1; }

/* ---------- 11. 对比表 ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
table.compare { min-width: 640px; }
table.compare th, table.compare td { padding: 16px 20px; text-align: left; border-bottom: 1px solid var(--line); font-size: .93rem; vertical-align: top; }
table.compare thead th { background: var(--bg-alt); font-weight: 700; color: var(--ink); font-size: .9rem; white-space: nowrap; }
table.compare thead th:last-child { background: var(--brand-soft); color: var(--brand-700); }
table.compare tbody tr:last-child td { border-bottom: 0; }
table.compare tbody td:first-child { font-weight: 600; color: var(--ink); }
table.compare tbody td:last-child { background: rgba(59, 91, 255, .035); color: var(--text-2); }
table.compare td .yes, table.compare td .no { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; }
table.compare td .yes { color: #047857; }
table.compare td .no { color: var(--text-3); }
table.compare td svg { width: 16px; height: 16px; }

/* ---------- 12. 行业/场景 chip 网格 ---------- */
.chip-grid { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; list-style: none; padding: 0; margin: 0; }
.chip-item {
  display: flex; align-items: center; gap: 8px; padding: 10px 16px; background: #fff;
  border: 1px solid var(--line); border-radius: var(--pill); font-size: .9rem; color: var(--text-2);
  transition: transform .2s, box-shadow .2s, color .2s, border-color .2s;
}
.chip-item svg { width: 16px; height: 16px; color: var(--brand); }
.chip-item:hover { transform: translateY(-2px); box-shadow: var(--shadow-sm); color: var(--brand); border-color: rgba(59, 91, 255, .35); }

.check-list { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px 24px; }
.check-list li { display: flex; gap: 10px; align-items: flex-start; font-size: .95rem; color: var(--text-2); margin: 0; }
.check-list li svg { width: 18px; height: 18px; color: var(--emerald); flex: none; margin-top: 4px; }

/* ---------- 13. 手风琴 FAQ ---------- */
.accordion { border: 1px solid var(--line); border-radius: var(--radius); background: #fff; overflow: hidden; }
.acc-item + .acc-item { border-top: 1px solid var(--line); }
.acc-q {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 18px 24px; background: none; border: 0; text-align: left;
  font-size: 1rem; font-weight: 600; color: var(--ink); line-height: 1.5;
}
.acc-q:hover { color: var(--brand); }
.acc-q .qi { width: 22px; height: 22px; border-radius: 50%; background: var(--brand-soft); color: var(--brand); display: grid; place-items: center; flex: none; }
.acc-q .qi svg { width: 14px; height: 14px; transition: transform .25s ease; }
.acc-item.is-open .acc-q { color: var(--brand); }
.acc-item.is-open .qi svg { transform: rotate(45deg); }
.acc-a { display: none; padding: 0 24px 20px 24px; color: var(--text-2); font-size: .95rem; }
.acc-item.is-open .acc-a { display: block; animation: fadeDown .3s ease; }
@keyframes fadeDown { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: none; } }

/* ---------- 14. CTA 条 ---------- */
.cta-band {
  position: relative; overflow: hidden; border-radius: var(--radius-lg); padding: 52px 40px;
  background: linear-gradient(125deg, #16224a 0%, #222e5e 45%, #2e2363 100%); color: #fff; text-align: center;
}
.cta-band::before {
  content: ""; position: absolute; inset: 0; opacity: .5;
  background-image: radial-gradient(600px 300px at 20% 0%, rgba(59, 91, 255, .5), transparent 60%),
                    radial-gradient(500px 260px at 85% 100%, rgba(124, 58, 237, .45), transparent 60%);
}
.cta-band > * { position: relative; z-index: 1; }
.cta-band h2 { font-size: clamp(1.5rem, 3vw, 2rem); margin-bottom: 12px; }
.cta-band p { color: #b8c2dd; max-width: 640px; margin: 0 auto 26px; }

/* ---------- 15. 面包屑 ---------- */
.crumbs { font-size: .86rem; color: var(--text-3); margin: 0 0 18px; display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.crumbs a { color: var(--text-2); }
.crumbs a:hover { color: var(--brand); }
.crumbs span { color: var(--text-3); }
.crumbs .sep { width: 14px; height: 14px; opacity: .55; }

/* ---------- 16. 页内江湖：通用页面头 ---------- */
.page-head {
  position: relative; overflow: hidden; padding: calc(var(--header-h) + 60px) 0 60px;
  background: radial-gradient(900px 420px at 15% 0%, #1d2750 0%, transparent 62%),
              linear-gradient(165deg, var(--deep) 0%, var(--deep-2) 100%);
  color: #fff; text-align: center;
}
.page-head::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, .04) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255, 255, 255, .04) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: radial-gradient(circle at 50% 0%, #000, transparent 70%);
          mask-image: radial-gradient(circle at 50% 0%, #000, transparent 70%);
}
.page-head > .container { position: relative; z-index: 1; }
.page-head h1 { font-size: clamp(1.7rem, 3.6vw, 2.5rem); margin-bottom: 14px; color: #fff; }
.page-head p { color: #aab5d4; max-width: 680px; margin: 0 auto; font-size: 1.02rem; }
.page-head .crumbs { justify-content: center; color: #8f9cc0; }
.page-head .crumbs a { color: #b8c2dd; }
.page-head .crumbs a:hover { color: #fff; }
/* 首屏带二维码的分栏头图（guide 页） */
.head-split-grid { display: flex; align-items: center; justify-content: space-between; gap: 48px; flex-wrap: wrap; }
.head-split-grid .head-text { flex: 1 1 400px; min-width: 0; text-align: left; }
.head-split-grid .head-text h1 { text-align: left; }
.head-split-grid .crumbs { justify-content: flex-start; }
.head-split-grid .head-text p { margin: 0; text-align: left; max-width: 640px; }
.head-qr { flex: none; background: #fff; border-radius: 18px; padding: 16px 16px 14px; text-align: center; box-shadow: 0 20px 50px rgba(0, 0, 0, .38); }
.head-qr img { display: block; width: 150px; height: 150px; border-radius: 10px; background: #fff; margin: 0 auto; }
.head-qr strong { display: block; margin-top: 10px; color: var(--ink); font-size: .92rem; }
.head-qr span { display: block; margin-top: 2px; color: var(--text-2); font-size: .76rem; }
@media (max-width: 860px) {
  .head-split-grid { justify-content: center; text-align: center; }
  .head-split-grid .crumbs { justify-content: center; }
}

/* ---------- 17. 双栏图文 ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.split.reverse .split-media { order: -1; }
.viz {
  border-radius: var(--radius-lg); padding: 28px; background: var(--grad-soft);
  border: 1px solid rgba(59, 91, 255, .14);
}
.viz.deep { background: linear-gradient(165deg, #16224a, #222e5e); border-color: rgba(255, 255, 255, .12); color: #fff; }
.flow-v { display: grid; gap: 14px; }
.flow-step {
  display: flex; gap: 14px; align-items: flex-start; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); padding: 16px 18px;
}
.flow-step .sn { width: 30px; height: 30px; border-radius: 9px; background: var(--grad); color: #fff; display: grid; place-items: center; font-weight: 700; font-size: .85rem; flex: none; }
.flow-step h4 { margin: 0 0 4px; font-size: .96rem; }
.flow-step p { margin: 0; font-size: .87rem; color: var(--text-2); }
.flow-arrow { text-align: center; color: var(--brand); }
.flow-arrow svg { width: 18px; height: 18px; margin: 0 auto; }

/* ---------- 18. 投标干货：列表 ---------- */
.news-layout { display: grid; grid-template-columns: 1fr 320px; gap: 40px; align-items: start; }
.filter-bar { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 28px; }
.filter-btn {
  padding: 8px 18px; border-radius: var(--pill); border: 1px solid var(--line-strong); background: #fff;
  font-size: .9rem; font-weight: 500; color: var(--text-2); transition: all .2s;
}
.filter-btn:hover { color: var(--brand); border-color: var(--brand); }
.filter-btn.is-active { background: var(--grad); border-color: transparent; color: #fff; box-shadow: var(--shadow-brand); }
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  display: flex; flex-direction: column;
  transition: transform .26s cubic-bezier(.4, 0, .2, 1), box-shadow .26s ease, border-color .26s ease;
}
.news-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: rgba(59, 91, 255, .3); }
.news-thumb { position: relative; aspect-ratio: 16 / 10; overflow: hidden; background: var(--bg-alt); }
.news-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.news-card:hover .news-thumb img { transform: scale(1.05); }
.news-thumb .thumb-tag { position: absolute; top: 12px; left: 12px; background: rgba(255, 255, 255, .94); backdrop-filter: blur(6px); }
.news-body { padding: 20px; display: flex; flex-direction: column; flex: 1; }
.news-body h3 { font-size: 1.02rem; line-height: 1.5; margin-bottom: 10px; }
.news-body h3 a { color: var(--ink); }
.news-card:hover .news-body h3 a { color: var(--brand); }
.news-excerpt { font-size: .88rem; color: var(--text-2); margin-bottom: 14px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-foot { margin-top: auto; display: flex; align-items: center; justify-content: space-between; gap: 10px; font-size: .8rem; color: var(--text-3); border-top: 1px solid var(--line); padding-top: 12px; }
.news-foot .read { display: inline-flex; align-items: center; gap: 5px; }
.news-foot svg { width: 14px; height: 14px; }
.news-empty { grid-column: 1 / -1; text-align: center; padding: 40px 0; color: var(--text-3); }

/* 侧栏 */
.side-widget { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; margin-bottom: 20px; }
.side-widget h4 { font-size: .98rem; margin-bottom: 14px; display: flex; align-items: center; gap: 8px; }
.side-widget h4 svg { width: 17px; height: 17px; color: var(--brand); }
.side-list { list-style: none; margin: 0; padding: 0; }
.side-list li { margin: 0 0 12px; padding-bottom: 12px; border-bottom: 1px dashed var(--line); }
.side-list li:last-child { margin-bottom: 0; padding-bottom: 0; border-bottom: 0; }
.side-list a { display: flex; gap: 10px; color: var(--text-2); font-size: .9rem; line-height: 1.55; }
.side-list a:hover { color: var(--brand); }
.side-list .rank { font-family: var(--font-num); font-weight: 800; color: var(--text-3); flex: none; font-size: .95rem; }
.side-list li:nth-child(1) .rank { color: var(--brand); }
.side-sticky { position: sticky; top: calc(var(--header-h) + 20px); }
.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.tag-cloud a { padding: 5px 12px; border-radius: var(--pill); background: var(--bg-alt); color: var(--text-2); font-size: .82rem; }
.tag-cloud a:hover { background: var(--brand-soft); color: var(--brand); }

/* 分页 */
.pagination { display: flex; justify-content: center; align-items: center; gap: 8px; margin-top: 40px; flex-wrap: wrap; }
.pagination a, .pagination span {
  min-width: 38px; height: 38px; padding: 0 12px; border-radius: 10px; display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--line-strong); background: #fff; font-size: .9rem; color: var(--text-2);
}
.pagination a:hover { border-color: var(--brand); color: var(--brand); }
.pagination .current { background: var(--grad); border-color: transparent; color: #fff; font-weight: 600; }
.pagination .disabled { opacity: .45; pointer-events: none; }

/* ---------- 19. 文章详情 ---------- */
.article-layout { display: grid; grid-template-columns: 280px 1fr; gap: 48px; align-items: start; }
.article-header { margin-bottom: 28px; }
.article-header h1 { font-size: clamp(1.5rem, 3.2vw, 2.15rem); line-height: 1.35; margin-bottom: 16px; }
.article-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; font-size: .86rem; color: var(--text-3); }
.article-meta span { display: inline-flex; align-items: center; gap: 6px; }
.article-meta svg { width: 15px; height: 15px; }
.article-cover { border-radius: var(--radius); overflow: hidden; margin-bottom: 32px; border: 1px solid var(--line); }
.article-body { font-size: 1.02rem; color: #26324a; }
.article-body h2 {
  font-size: 1.35rem; margin: 44px 0 16px; padding-left: 14px; border-left: 4px solid var(--brand); line-height: 1.4;
}
.article-body h3 { font-size: 1.12rem; margin: 32px 0 12px; }
.article-body p { margin-bottom: 18px; }
.article-body img { border-radius: var(--radius); margin: 24px 0; width: 100%; }
.article-body figure { margin: 24px 0; }
.article-body figcaption { text-align: center; font-size: .84rem; color: var(--text-3); margin-top: 8px; }
.article-body ul, .article-body ol { margin-bottom: 18px; padding-left: 1.3em; }
.article-body li { margin-bottom: 8px; }
.article-body blockquote {
  margin: 24px 0; padding: 18px 22px; background: var(--bg-alt); border-left: 4px solid var(--brand);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0; color: var(--text-2); font-size: .98rem;
}
.article-body blockquote p:last-child { margin-bottom: 0; }
.callout { margin: 26px 0; padding: 20px 22px; border-radius: var(--radius); background: var(--grad-soft); border: 1px solid rgba(59, 91, 255, .16); }
.callout .co-title { font-weight: 700; color: var(--brand-700); margin-bottom: 8px; display: flex; align-items: center; gap: 8px; font-size: .96rem; }
.callout .co-title svg { width: 18px; height: 18px; }
.callout p:last-child { margin-bottom: 0; }
.callout.warn { background: #fff6e6; border-color: rgba(245, 158, 11, .28); }
.callout.warn .co-title { color: #b45309; }
.callout.tip { background: #e7fbf2; border-color: rgba(16, 185, 129, .24); }
.callout.tip .co-title { color: #047857; }
table.plain th, table.plain td { border: 1px solid var(--line); padding: 12px 14px; font-size: .93rem; }
table.plain th { background: var(--bg-alt); text-align: left; font-weight: 600; }

/* TOC */
.toc { position: sticky; top: calc(var(--header-h) + 24px); background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.toc h4 { font-size: .9rem; color: var(--text-3); letter-spacing: .06em; text-transform: uppercase; margin-bottom: 12px; }
.toc ol { list-style: none; margin: 0; padding: 0; counter-reset: t; }
.toc li { margin: 0; }
.toc a { display: block; padding: 8px 12px; border-radius: 8px; font-size: .9rem; color: var(--text-2); line-height: 1.5; border-left: 2px solid transparent; }
.toc a:hover { color: var(--brand); background: var(--bg-alt); }
.toc a.is-active { color: var(--brand); background: var(--brand-soft); border-left-color: var(--brand); font-weight: 600; }
.toc-nav-mobile { display: none; }

/* 文末 */
.post-tags { display: flex; flex-wrap: wrap; gap: 10px; margin: 36px 0 24px; }
.post-cta {
  margin: 36px 0; padding: 28px; border-radius: var(--radius); color: #fff;
  background: linear-gradient(125deg, #16224a, #2e2363); display: flex; align-items: center; gap: 24px; flex-wrap: wrap;
}
.post-cta .pc-text { flex: 1; min-width: 240px; }
.post-cta h4 { margin: 0 0 8px; font-size: 1.1rem; color: #fff; }
.post-cta p { margin: 0; font-size: .9rem; color: #b8c2dd; }
.post-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 32px; }
.post-nav a { padding: 18px 20px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; font-size: .92rem; color: var(--text-2); }
.post-nav a:hover { border-color: var(--brand); color: var(--brand); }
.post-nav .pn-label { font-size: .78rem; color: var(--text-3); margin-bottom: 4px; display: block; }
.post-nav .next { text-align: right; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }

/* ---------- 20. 页脚 ---------- */
.site-footer { background: var(--deep-2); color: #aab5d4; padding: 64px 0 28px; position: relative; overflow: hidden; }
.site-footer::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(59, 91, 255, .6), rgba(124, 58, 237, .6), transparent);
}
.footer-grid { display: grid; grid-template-columns: 1.6fr repeat(3, 1fr); gap: 40px; margin-bottom: 40px; }
.footer-brand .brand { color: #fff; margin-bottom: 14px; }
.footer-brand p { font-size: .88rem; color: #8f9cc0; max-width: 320px; margin-bottom: 16px; }
.footer-qr { display: flex; gap: 14px; align-items: center; }
.footer-qr img { width: 84px; height: 84px; border-radius: 10px; background: #fff; padding: 5px; }
.footer-qr span { font-size: .82rem; color: #8f9cc0; }
.footer-col h4 { color: #fff; font-size: .95rem; margin-bottom: 16px; }
.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { color: #aab5d4; font-size: .88rem; }
.footer-col a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .09); padding-top: 22px; font-size: .82rem; color: #7c88a8; display: flex; flex-wrap: wrap; gap: 10px 24px; align-items: center; }
.footer-bottom a { color: #8f9cc0; }
.footer-bottom a:hover { color: #fff; }
.footer-bottom .beian { margin-left: auto; }
@media (max-width: 767px) { .footer-bottom .beian { margin-left: 0; } }

/* ---------- 21. 返回顶部 ---------- */
.btt {
  position: fixed; right: 24px; bottom: 24px; z-index: 900; width: 46px; height: 46px; border-radius: 14px;
  border: 1px solid var(--line); background: #fff; color: var(--brand); display: grid; place-items: center;
  box-shadow: var(--shadow); opacity: 0; visibility: hidden; transform: translateY(10px);
  transition: opacity .25s, visibility .25s, transform .25s;
}
.btt.is-show { opacity: 1; visibility: visible; transform: none; }
.btt:hover { background: var(--grad); color: #fff; border-color: transparent; }
.btt svg { width: 20px; height: 20px; }

/* ---------- 22. 动效 ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s cubic-bezier(.4, 0, .2, 1), transform .7s cubic-bezier(.4, 0, .2, 1); }
.reveal.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero-glow { animation: none; }
  .card:hover, .news-card:hover, .btn:hover { transform: none; }
}

/* ---------- 23. 响应式 ---------- */
@media (max-width: 1200px) {
  .news-layout { grid-template-columns: 1fr 280px; gap: 28px; }
  .article-layout { grid-template-columns: 240px 1fr; gap: 32px; }
}
@media (max-width: 1024px) {
  .nav { display: none; }
  .hamburger { display: flex; }
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero { text-align: center; }
  .hero-lead { margin-left: auto; margin-right: auto; }
  .hero-tags { justify-content: center; }
  .hero .btn-row { justify-content: center; }
  .qr-card { max-width: 420px; margin: 0 auto; }
  .stats-wrap { margin-top: -40px; padding: 24px 12px; }
  .steps { grid-template-columns: repeat(3, 1fr); gap: 20px 16px; }
  .steps-line::before { display: none; }
  .g-4 { grid-template-columns: repeat(2, 1fr); }
  .g-3 { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .split { grid-template-columns: 1fr; gap: 32px; }
  .split.reverse .split-media { order: 0; }
  .news-layout { grid-template-columns: 1fr; }
  .side-sticky { position: static; }
  .article-layout { grid-template-columns: 1fr; }
  .toc { display: none; }
  .toc-nav-mobile { display: block; margin-bottom: 24px; }
}
@media (max-width: 767px) {
  body { font-size: 15.5px; }
  .container { padding: 0 18px; }
  .section { padding: 60px 0; }
  .section-sm { padding: 40px 0; }
  .hero { padding: calc(var(--header-h) + 48px) 0 64px; }
  .hero-note { text-align: center; }
  .stats { grid-template-columns: repeat(2, 1fr); gap: 24px 12px; }
  .stats-wrap .stat + .stat { border-left: 0; }
  .stats-wrap .stat:nth-child(even) { border-left: 1px solid var(--line); }
  .g-2, .g-3, .g-4 { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .check-list { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .cta-band { padding: 36px 22px; }
  .post-nav { grid-template-columns: 1fr; }
  .post-nav .next { text-align: left; }
  .card { padding: 22px; }
  .page-head { padding: calc(var(--header-h) + 40px) 0 40px; }
  .qr-card { padding: 20px; }
  .qr-card img.qr { width: 150px; height: 150px; }
  .view-mobile-hide { display: none; }
}