/* ============================================================
   豆选 DouXuan GEO — Global Stylesheet
   Design system: "Trust & Authority" / Enterprise Gateway
   主题:深 navy + 靛蓝 accent;中文系统字体栈(不依赖外网字体)
   ============================================================ */


/* ---------- Design tokens ---------- */
:root {
  /* Color */
  --c-primary: #0f172a;        /* deep navy — header, footer, headings */
  --c-primary-soft: #1e293b;
  --c-secondary: #334155;
  --c-accent: #4f46e5;         /* 靛蓝 — CTA、链接 */
  --c-accent-strong: #4338ca;
  --c-accent-soft: #eef2ff;
  --c-bg: #f8fafc;
  --c-surface: #ffffff;
  --c-fg: #0f172a;
  --c-fg-muted: #475569;
  --c-muted: #e8ecf1;
  --c-border: #e2e8f0;
  --c-danger: #dc2626;
  --c-success: #15803d;
  --c-ring: #4f46e5;

  /* Type */
  --f-head: -apple-system, 'PingFang SC', 'HarmonyOS Sans SC', 'MiSans', 'Microsoft YaHei', 'Noto Sans SC', 'Segoe UI', system-ui, sans-serif;
  --f-body: -apple-system, 'PingFang SC', 'HarmonyOS Sans SC', 'MiSans', 'Microsoft YaHei', 'Noto Sans SC', 'Segoe UI', system-ui, sans-serif;

  /* Shape / elevation */
  --radius-s: 6px;
  --radius: 10px;
  --radius-l: 16px;
  --shadow-s: 0 1px 2px rgba(15, 23, 42, .06);
  --shadow: 0 4px 16px rgba(15, 23, 42, .08);
  --shadow-l: 0 12px 32px rgba(15, 23, 42, .14);

  /* Layout */
  --container: 1200px;
  --topbar-h: 40px;
  --header-h: 76px;

  /* Motion */
  --t-fast: 160ms ease-out;
  --t-med: 260ms ease-out;
}

/* ---------- Reset / base ---------- */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--f-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--c-fg);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
}

img, svg, video { max-width: 100%; display: block; }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--f-head);
  color: var(--c-primary);
  line-height: 1.25;
  margin: 0 0 .5em;
  font-weight: 600;
}

h1 { font-size: clamp(1.9rem, 4vw, 3rem); font-weight: 700; }
h2 { font-size: clamp(1.5rem, 3vw, 2.15rem); }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.05rem; }

p { margin: 0 0 1em; }

a { color: var(--c-accent); text-decoration: none; }
a:hover { color: var(--c-accent-strong); }

ul, ol { padding-left: 1.25em; margin: 0 0 1em; }

button { font: inherit; cursor: pointer; }

:focus-visible {
  outline: 3px solid var(--c-ring);
  outline-offset: 2px;
  border-radius: 2px;
}

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--c-primary); color: #fff;
  padding: 10px 18px; z-index: 2000; border-radius: 0 0 var(--radius-s) 0;
}
.skip-link:focus { left: 0; color: #fff; }

/* ---------- Layout helpers ---------- */
.container { max-width: var(--container); margin-inline: auto; padding-inline: 20px; }

.section { padding-block: clamp(56px, 8vw, 96px); }
.section-alt { background: var(--c-surface); }
.section-dark { background: var(--c-primary); }
.section-dark h2, .section-dark h3 { color: #fff; }
.section-dark p { color: #cbd5e1; }

.section-head { max-width: 720px; margin: 0 auto 48px; text-align: center; }
.section-head.left { margin-left: 0; text-align: left; }
.section-head .lead { color: var(--c-fg-muted); font-size: 1.06rem; }

.eyebrow {
  display: inline-block;
  font-family: var(--f-head);
  font-size: .8rem; font-weight: 600;
  letter-spacing: .12em; text-transform: uppercase;
  color: var(--c-accent);
  margin-bottom: 10px;
}

.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 48px; padding: 12px 26px;
  font-family: var(--f-head); font-weight: 600; font-size: .95rem;
  border-radius: var(--radius-s);
  border: 2px solid transparent;
  background: var(--c-accent); color: #fff;
  transition: background var(--t-fast), color var(--t-fast), border-color var(--t-fast), transform var(--t-fast);
  cursor: pointer; text-align: center;
  white-space: nowrap;
}
.btn:hover { background: var(--c-accent-strong); color: #fff; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-outline { background: transparent; color: var(--c-accent); border-color: currentColor; }
.btn-outline:hover { background: var(--c-accent); border-color: var(--c-accent); color: #fff; }

.btn-light { background: #fff; color: var(--c-primary); }
.btn-light:hover { background: var(--c-accent-soft); color: var(--c-primary); }

.btn-outline-light { background: transparent; color: #fff; border-color: rgba(255,255,255,.7); }
.btn-outline-light:hover { background: #fff; color: var(--c-primary); }

.btn-lg { min-height: 54px; padding: 14px 34px; font-size: 1.02rem; }
.btn svg { width: 18px; height: 18px; flex: none; }

/* ---------- Top utility bar ---------- */
.topbar {
  background: var(--c-primary); color: #cbd5e1;
  font-size: .84rem; min-height: var(--topbar-h);
}
.topbar .container {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; min-height: var(--topbar-h); flex-wrap: wrap;
}
.topbar a { color: #e2e8f0; display: inline-flex; align-items: center; gap: 6px; padding: 6px 0; }
.topbar a:hover { color: #fff; }
.topbar .topbar-contacts { display: flex; gap: 22px; flex-wrap: wrap; }
.topbar .topbar-social { display: flex; gap: 4px; }
.topbar .topbar-social a { padding: 6px; border-radius: 4px; }
.topbar svg { width: 15px; height: 15px; }

/* ---------- Header / nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 900;
  background: var(--c-surface);
  border-bottom: 1px solid var(--c-border);
  transition: box-shadow var(--t-med);
}
.site-header.is-scrolled { box-shadow: var(--shadow); }

.header-inner {
  display: flex; align-items: center; gap: 28px;
  min-height: var(--header-h);
}

.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--c-primary); }
.brand:hover { color: var(--c-primary); }
.brand-mark { width: 38px; height: 38px; flex: none; }
.brand-name { font-family: var(--f-head); font-weight: 700; font-size: 1.22rem; line-height: 1.1; }
.brand-name small { display: block; font-size: .62rem; font-weight: 600; letter-spacing: .18em; text-transform: uppercase; color: var(--c-accent); }

.main-nav { margin-left: auto; }
.main-nav > ul { display: flex; gap: 4px; list-style: none; margin: 0; padding: 0; }

.nav-item > a, .nav-item > button {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 12px 14px; min-height: 44px;
  font-family: var(--f-head); font-weight: 500; font-size: .95rem;
  color: var(--c-primary); background: none; border: 0;
  border-radius: var(--radius-s);
  transition: color var(--t-fast), background var(--t-fast);
}
.nav-item > a:hover, .nav-item > button:hover { color: var(--c-accent); background: var(--c-accent-soft); }
.nav-item.active > a, .nav-item.active > button { color: var(--c-accent); }
.nav-item > a svg.caret, .nav-item > button svg.caret { width: 14px; height: 14px; transition: transform var(--t-fast); }
.nav-item.open > button svg.caret { transform: rotate(180deg); }

.header-cta { display: inline-flex; flex: none; }

/* Mega dropdown */
.nav-item { position: relative; }
.mega {
  position: absolute; top: calc(100% + 8px); left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 560px; max-width: min(760px, 92vw);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-l);
  padding: 26px;
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity var(--t-fast), transform var(--t-fast), visibility var(--t-fast);
  z-index: 950;
}
.nav-item.open .mega {
  opacity: 1; visibility: visible; pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}
.mega.mega-sm { min-width: 300px; }
.mega-title {
  font-family: var(--f-head); font-size: .78rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: .12em; color: var(--c-fg-muted);
  margin: 0 0 14px; padding-bottom: 10px; border-bottom: 1px solid var(--c-border);
}
.mega-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 4px 28px; }
.mega-cols.cols-1 { grid-template-columns: 1fr; }
.mega a {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 10px; border-radius: var(--radius-s);
  color: var(--c-secondary); font-size: .93rem; line-height: 1.35;
}
.mega a:hover { background: var(--c-accent-soft); color: var(--c-accent-strong); }
.mega a svg { width: 17px; height: 17px; flex: none; color: var(--c-accent); }
.mega-footer { margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--c-border); }
.mega-footer a { color: var(--c-accent); font-weight: 600; }

/* Mobile nav */
.nav-toggle {
  display: none;
  margin-left: auto;
  width: 46px; height: 46px;
  align-items: center; justify-content: center;
  background: none; border: 1px solid var(--c-border); border-radius: var(--radius-s);
  color: var(--c-primary);
}
.nav-toggle svg { width: 22px; height: 22px; }

@media (max-width: 1024px) {
  .main-nav {
    position: fixed; inset: 0; top: 0;
    background: var(--c-surface);
    margin: 0; padding: 84px 20px 40px;
    overflow-y: auto;
    transform: translateX(100%);
    transition: transform var(--t-med);
    z-index: 940;
  }
  .main-nav.open { transform: translateX(0); }
  .main-nav > ul { flex-direction: column; gap: 0; }
  .nav-item { border-bottom: 1px solid var(--c-border); }
  .nav-item > a, .nav-item > button {
    width: 100%; justify-content: space-between;
    padding: 16px 6px; font-size: 1.05rem;
  }
  .mega {
    position: static; transform: none;
    min-width: 0; max-width: none;
    border: 0; box-shadow: none; padding: 0 6px 16px;
    display: none; opacity: 1; visibility: visible; pointer-events: auto;
  }
  .nav-item.open .mega { display: block; transform: none; }
  .mega-cols { grid-template-columns: 1fr; }
  .nav-toggle { display: inline-flex; z-index: 960; position: relative; }
  .header-cta { display: none; }
}

/* ---------- Breadcrumb + page hero ---------- */
.page-hero {
  background:
    linear-gradient(120deg, rgba(15,23,42,.94), rgba(79,70,229,.82)),
    repeating-linear-gradient(-45deg, rgba(255,255,255,.035) 0 2px, transparent 2px 14px),
    var(--c-primary);
  color: #fff;
  padding: clamp(48px, 7vw, 84px) 0;
}
.page-hero h1 { color: #fff; margin-bottom: .3em; }
.page-hero .lead { color: #e0e7ff; max-width: 640px; font-size: 1.08rem; margin: 0; }

.breadcrumb {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px;
  list-style: none; padding: 0; margin: 0 0 18px;
  font-size: .84rem; color: #a5b4fc;
}
.breadcrumb a { color: #c7d2fe; }
.breadcrumb a:hover { color: #fff; }
.breadcrumb li + li::before { content: "/"; margin-right: 8px; color: rgba(255,255,255,.4); }
.breadcrumb [aria-current] { color: #fff; }

/* ---------- Hero (homepage) ---------- */
.hero {
  position: relative; overflow: hidden;
  background:
    linear-gradient(115deg, rgba(15,23,42,.96) 0%, rgba(15,23,42,.86) 42%, rgba(79,70,229,.72) 100%),
    var(--c-primary);
  color: #fff;
}
.hero-waves { position: absolute; inset: auto 0 -2px 0; width: 100%; height: auto; color: var(--c-bg); pointer-events: none; }
.hero-grid {
  position: absolute; inset: 0;
  background-image: radial-gradient(rgba(255,255,255,.07) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}
.hero-inner {
  position: relative;
  display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  gap: 48px; align-items: center;
  padding: clamp(64px, 9vw, 120px) 0 clamp(88px, 11vw, 150px);
}
.hero h1 { color: #fff; margin-bottom: .4em; }
.hero .hero-sub { font-size: 1.12rem; color: #e0e7ff; max-width: 560px; margin-bottom: 28px; }
.hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 34px; }
.hero-trust { display: flex; gap: 10px 26px; flex-wrap: wrap; padding: 0; margin: 0; list-style: none; }
.hero-trust li { display: flex; align-items: center; gap: 8px; font-size: .9rem; color: #c7d2fe; }
.hero-trust svg { width: 16px; height: 16px; color: #818cf8; flex: none; }

.hero-panel {
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.16);
  border-radius: var(--radius-l);
  padding: 28px;
  backdrop-filter: blur(6px);
}
.hero-panel h2 { color: #fff; font-size: 1.15rem; margin-bottom: 18px; }
.hero-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.hero-stat { border-left: 3px solid #818cf8; padding-left: 12px; }
.hero-stat .num { font-family: var(--f-head); font-size: 1.7rem; font-weight: 700; color: #fff; line-height: 1.1; }
.hero-stat .lbl { font-size: .82rem; color: #c7d2fe; }

@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; padding-bottom: 96px; }
}

/* ---------- CTA bands ---------- */
.band {
  background: linear-gradient(100deg, var(--c-accent) 0%, var(--c-accent-strong) 100%);
  color: #fff; border-radius: var(--radius-l);
  padding: clamp(28px, 4vw, 44px);
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px; flex-wrap: wrap;
  box-shadow: var(--shadow);
}
.band h2, .band h3 { color: #fff; margin: 0 0 6px; }
.band p { color: #e0e7ff; margin: 0; max-width: 560px; }
.band-actions { display: flex; gap: 12px; flex-wrap: wrap; }

.band-flat { border-radius: 0; box-shadow: none; }

/* ---------- Cards ---------- */
.card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex; flex-direction: column;
  transition: transform var(--t-med), box-shadow var(--t-med), border-color var(--t-med);
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-l); border-color: #cbd5e1; }
.card-body { padding: 22px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.card-body h3 a { color: var(--c-primary); }
.card-body h3 a:hover { color: var(--c-accent); }
.card-body p { color: var(--c-fg-muted); font-size: .93rem; margin: 0; flex: 1; }
.card-link {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--f-head); font-weight: 600; font-size: .88rem;
  color: var(--c-accent); margin-top: 10px;
}
.card-link svg { width: 15px; height: 15px; transition: transform var(--t-fast); }
.card:hover .card-link svg, .card-link:hover svg { transform: translateX(4px); }

/* image placeholder block (swap with real photos) */
.img-ph {
  aspect-ratio: 16 / 10;
  display: flex; align-items: center; justify-content: center;
  background:
    linear-gradient(135deg, var(--c-accent-soft), #eef2ff 55%, var(--c-muted));
  color: var(--c-accent);
  position: relative;
}
.img-ph svg { width: 44px; height: 44px; opacity: .85; }
.img-ph.ph-dark { background: linear-gradient(135deg, var(--c-primary-soft), var(--c-secondary)); color: #a5b4fc; }
.img-ph.ph-square { aspect-ratio: 1 / 1; }
.img-ph.ph-wide { aspect-ratio: 21 / 9; }

/* icon feature card */
.icon-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 26px;
  transition: transform var(--t-med), box-shadow var(--t-med);
}
.icon-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.icon-card .icon-wrap {
  width: 52px; height: 52px; border-radius: var(--radius-s);
  display: flex; align-items: center; justify-content: center;
  background: var(--c-accent-soft); color: var(--c-accent);
  margin-bottom: 16px;
}
.icon-card .icon-wrap svg { width: 26px; height: 26px; }
.icon-card h3 { font-size: 1.08rem; }
.icon-card p { color: var(--c-fg-muted); font-size: .92rem; margin: 0; }

/* ---------- Value props strip ---------- */
.props { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
.props .prop {
  text-align: center; padding: 18px 10px;
  display: flex; flex-direction: column; align-items: center; gap: 10px;
}
.props .prop svg { width: 30px; height: 30px; color: #818cf8; }
.props .prop span { font-family: var(--f-head); font-weight: 600; font-size: .92rem; color: #fff; }
@media (max-width: 1024px) { .props { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 640px) { .props { grid-template-columns: repeat(2, 1fr); } }

/* ---------- Split section ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(28px, 5vw, 64px); align-items: center; }
.split .img-ph { border-radius: var(--radius-l); box-shadow: var(--shadow); }
.split ul.checks { list-style: none; padding: 0; margin: 0 0 24px; display: grid; gap: 12px; }
.split ul.checks li { display: flex; gap: 10px; align-items: flex-start; color: var(--c-secondary); }
.split ul.checks svg { width: 20px; height: 20px; color: var(--c-success); flex: none; margin-top: 2px; }
@media (max-width: 900px) { .split { grid-template-columns: 1fr; } }

/* ---------- Brand wall ---------- */
.brands { display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; }
.brand-tile {
  border: 1px solid var(--c-border); border-radius: var(--radius-s);
  background: var(--c-surface);
  min-height: 72px;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--f-head); font-weight: 600; font-size: .92rem;
  color: var(--c-fg-muted); letter-spacing: .04em;
  filter: grayscale(1); opacity: .8;
  transition: filter var(--t-fast), opacity var(--t-fast), border-color var(--t-fast);
  padding: 10px;
  text-align: center;
}
.brand-tile:hover { filter: none; opacity: 1; border-color: var(--c-accent); color: var(--c-accent-strong); }
@media (max-width: 1024px) { .brands { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 640px) { .brands { grid-template-columns: repeat(2, 1fr); } }

/* ---------- Testimonials ---------- */
.quote-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 28px;
  display: flex; flex-direction: column; gap: 16px;
  height: 100%;
}
.quote-card .stars { display: flex; gap: 3px; color: #f59e0b; }
.quote-card .stars svg { width: 17px; height: 17px; }
.quote-card blockquote { margin: 0; color: var(--c-secondary); font-size: .97rem; flex: 1; }
.quote-card .who { display: flex; align-items: center; gap: 12px; }
.quote-card .avatar {
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--c-accent-soft); color: var(--c-accent);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--f-head); font-weight: 700;
}
.quote-card .who strong { display: block; font-size: .93rem; color: var(--c-primary); }
.quote-card .who span { font-size: .82rem; color: var(--c-fg-muted); }

/* ---------- Stats row ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
.stats .num { font-family: var(--f-head); font-size: clamp(1.9rem, 3.4vw, 2.6rem); font-weight: 700; color: var(--c-accent); line-height: 1.1; }
.stats .lbl { color: var(--c-fg-muted); font-size: .92rem; }
@media (max-width: 640px) { .stats { grid-template-columns: repeat(2, 1fr); } }

/* ---------- Sidebar layout (detail pages) ---------- */
.layout-sidebar {
  display: grid; grid-template-columns: minmax(0, 1fr) 320px;
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
}
@media (max-width: 900px) { .layout-sidebar { grid-template-columns: 1fr; } }

.sidebar { display: grid; gap: 24px; position: sticky; top: calc(var(--header-h) + 24px); }
@media (max-width: 900px) { .sidebar { position: static; } }

.side-box {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 24px;
}
.side-box h3 { font-size: 1.02rem; margin-bottom: 14px; }
.side-nav { list-style: none; padding: 0; margin: 0; display: grid; gap: 2px; }
.side-nav a {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  padding: 10px 12px; border-radius: var(--radius-s);
  color: var(--c-secondary); font-size: .93rem;
}
.side-nav a:hover { background: var(--c-accent-soft); color: var(--c-accent-strong); }
.side-nav a.current { background: var(--c-accent); color: #fff; font-weight: 600; }
.side-nav a svg { width: 14px; height: 14px; flex: none; }

.side-box.contact-box { background: var(--c-primary); border-color: var(--c-primary); color: #cbd5e1; }
.side-box.contact-box h3 { color: #fff; }
.side-box.contact-box .btn { width: 100%; margin-top: 8px; }
.side-box.contact-box a.tel {
  display: flex; align-items: center; gap: 10px;
  color: #fff; font-family: var(--f-head); font-weight: 600; font-size: 1.12rem;
  margin-bottom: 4px;
}
.side-box.contact-box svg { width: 18px; height: 18px; color: #818cf8; }

/* prose (article/detail body) */
.prose { max-width: 72ch; }
.prose h2 { margin-top: 1.6em; }
.prose h3 { margin-top: 1.4em; }
.prose img, .prose .img-ph { border-radius: var(--radius); margin-block: 1.4em; }
.prose ul li { margin-bottom: .4em; color: var(--c-secondary); }

/* ---------- Tables ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--c-border); border-radius: var(--radius); background: var(--c-surface); }
table.specs { width: 100%; border-collapse: collapse; font-size: .93rem; min-width: 520px; }
table.specs th, table.specs td { text-align: left; padding: 12px 16px; border-bottom: 1px solid var(--c-border); }
table.specs th { background: var(--c-bg); font-family: var(--f-head); font-weight: 600; color: var(--c-primary); white-space: nowrap; }
table.specs tr:last-child td { border-bottom: 0; }
table.specs td { color: var(--c-secondary); font-variant-numeric: tabular-nums; }

/* ---------- Forms ---------- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-grid .full { grid-column: 1 / -1; }
@media (max-width: 640px) { .form-grid { grid-template-columns: 1fr; } }

.field label {
  display: block; font-family: var(--f-head); font-weight: 600;
  font-size: .88rem; color: var(--c-primary); margin-bottom: 6px;
}
.field .req { color: var(--c-danger); }
.field input, .field select, .field textarea {
  width: 100%; min-height: 48px;
  padding: 12px 14px;
  font: inherit; color: var(--c-fg);
  background: var(--c-surface);
  border: 1px solid #cbd5e1; border-radius: var(--radius-s);
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
.field textarea { min-height: 130px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--c-accent);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, .18);
}
.field .hint { font-size: .8rem; color: var(--c-fg-muted); margin-top: 5px; }
.field .error-msg { display: none; font-size: .82rem; color: var(--c-danger); margin-top: 5px; }
.field.invalid input, .field.invalid select, .field.invalid textarea { border-color: var(--c-danger); }
.field.invalid .error-msg { display: block; }

.form-note { font-size: .85rem; color: var(--c-fg-muted); }
.form-success {
  display: none;
  background: #f0fdf4; border: 1px solid #bbf7d0; color: var(--c-success);
  border-radius: var(--radius-s); padding: 14px 16px; margin-bottom: 18px;
  font-weight: 600;
}
.form-success.show { display: flex; gap: 10px; align-items: center; }
.form-success svg { width: 20px; height: 20px; flex: none; }

/* ---------- Accordion (FAQ) ---------- */
.accordion { display: grid; gap: 12px; }
.acc-item { background: var(--c-surface); border: 1px solid var(--c-border); border-radius: var(--radius); overflow: hidden; }
.acc-item summary {
  list-style: none; cursor: pointer;
  display: flex; align-items: center; justify-content: space-between; gap: 14px;
  padding: 18px 22px;
  font-family: var(--f-head); font-weight: 600; color: var(--c-primary);
}
.acc-item summary::-webkit-details-marker { display: none; }
.acc-item summary svg { width: 18px; height: 18px; flex: none; color: var(--c-accent); transition: transform var(--t-fast); }
.acc-item[open] summary svg { transform: rotate(45deg); }
.acc-item .acc-body { padding: 0 22px 20px; color: var(--c-fg-muted); font-size: .95rem; }

/* ---------- Badges / pills ---------- */
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 12px; border-radius: 999px;
  background: var(--c-accent-soft); color: var(--c-accent-strong);
  font-family: var(--f-head); font-size: .76rem; font-weight: 600;
  letter-spacing: .04em; text-transform: uppercase;
}
.badge.badge-dark { background: rgba(255,255,255,.12); color: #c7d2fe; }

.pill-row { display: flex; flex-wrap: wrap; gap: 8px; }
.pill {
  padding: 8px 16px; min-height: 40px; display: inline-flex; align-items: center;
  border: 1px solid var(--c-border); border-radius: 999px;
  background: var(--c-surface); color: var(--c-secondary);
  font-family: var(--f-head); font-size: .86rem; font-weight: 500;
  cursor: pointer; transition: all var(--t-fast);
}
.pill:hover { border-color: var(--c-accent); color: var(--c-accent); }
.pill.active { background: var(--c-accent); border-color: var(--c-accent); color: #fff; }

/* ---------- Product catalog ---------- */
.product-card .img-ph { aspect-ratio: 4 / 3; }
.product-card .cat { font-size: .76rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--c-accent); }
.product-card .sku { font-size: .8rem; color: var(--c-fg-muted); }
.product-card .card-actions { display: flex; gap: 10px; margin-top: 14px; }
.product-card .card-actions .btn { flex: 1; min-height: 42px; padding: 8px 12px; font-size: .86rem; }

/* ---------- Blog / post cards ---------- */
.post-meta { display: flex; gap: 14px; font-size: .8rem; color: var(--c-fg-muted); }

/* ---------- Contact page ---------- */
.contact-grid { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr); gap: clamp(28px, 4vw, 56px); align-items: start; }
@media (max-width: 900px) { .contact-grid { grid-template-columns: 1fr; } }
.contact-card { display: flex; gap: 16px; padding: 20px 0; border-bottom: 1px solid var(--c-border); }
.contact-card:last-child { border-bottom: 0; }
.contact-card .icon-wrap {
  width: 46px; height: 46px; flex: none; border-radius: var(--radius-s);
  background: var(--c-accent-soft); color: var(--c-accent);
  display: flex; align-items: center; justify-content: center;
}
.contact-card .icon-wrap svg { width: 22px; height: 22px; }
.contact-card h3 { font-size: 1rem; margin-bottom: 2px; }
.contact-card p { margin: 0; color: var(--c-fg-muted); font-size: .93rem; }

.map-ph {
  aspect-ratio: 16 / 9; border-radius: var(--radius);
  background:
    repeating-linear-gradient(0deg, transparent 0 38px, rgba(79,70,229,.08) 38px 39px),
    repeating-linear-gradient(90deg, transparent 0 38px, rgba(79,70,229,.08) 38px 39px),
    linear-gradient(135deg, #eef2ff, var(--c-muted));
  display: flex; align-items: center; justify-content: center;
  color: var(--c-accent); border: 1px solid var(--c-border);
  flex-direction: column; gap: 8px; font-family: var(--f-head); font-weight: 600;
}
.map-ph svg { width: 38px; height: 38px; }

/* ---------- Footer ---------- */
.site-footer { background: var(--c-primary); color: #94a3b8; font-size: .92rem; }
.footer-main {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr 1.2fr;
  gap: 36px; padding: clamp(48px, 6vw, 72px) 0;
}
.site-footer h4 {
  color: #fff; font-size: .86rem; font-weight: 600;
  letter-spacing: .1em; text-transform: uppercase; margin-bottom: 18px;
}
.site-footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 9px; }
.site-footer a { color: #94a3b8; }
.site-footer a:hover { color: #fff; }
.footer-brand .brand-name { color: #fff; }
.footer-brand p { margin-top: 14px; max-width: 300px; }
.footer-social { display: flex; gap: 8px; margin-top: 18px; }
.footer-social a {
  width: 40px; height: 40px; border-radius: var(--radius-s);
  border: 1px solid rgba(255,255,255,.18);
  display: inline-flex; align-items: center; justify-content: center;
  color: #cbd5e1;
}
.footer-social a:hover { background: var(--c-accent); border-color: var(--c-accent); color: #fff; }
.footer-social svg { width: 17px; height: 17px; }
.footer-contact li { display: flex; gap: 10px; align-items: flex-start; }
.footer-contact svg { width: 16px; height: 16px; flex: none; margin-top: 4px; color: #818cf8; }

.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding: 20px 0; }
.footer-bottom .container {
  display: flex; align-items: center; justify-content: space-between;
  gap: 14px; flex-wrap: wrap;
}
.footer-legal { display: flex; gap: 20px; flex-wrap: wrap; list-style: none; margin: 0; padding: 0; }
.footer-legal a { font-size: .84rem; }

@media (max-width: 1024px) { .footer-main { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .footer-main { grid-template-columns: 1fr; } }

/* ---------- Back to top ---------- */
.to-top {
  position: fixed; right: 22px; bottom: 22px; z-index: 800;
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--c-accent); color: #fff; border: 0;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-l);
  opacity: 0; visibility: hidden; transform: translateY(10px);
  transition: opacity var(--t-med), transform var(--t-med), visibility var(--t-med), background var(--t-fast);
}
.to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { background: var(--c-accent-strong); }
.to-top svg { width: 20px; height: 20px; }

/* ---------- Scroll reveal ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .55s ease-out, transform .55s ease-out; }
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}

/* ---------- Utilities ---------- */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.mt-24 { margin-top: 24px; }
.mt-40 { margin-top: 40px; }
.mb-24 { margin-bottom: 24px; }
.muted { color: var(--c-fg-muted); }
.flow > * + * { margin-top: 16px; }

/* ============================================================
   豆选新增组件:定价卡 / 支付页 / 微信支付按钮 / 提示条
   ============================================================ */

/* ---------- Pricing cards ---------- */
.price-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; align-items: stretch; }
@media (max-width: 1100px) { .price-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .price-grid { grid-template-columns: 1fr; } }

.price-card {
  position: relative;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-l);
  padding: 30px 26px 26px;
  display: flex; flex-direction: column; gap: 0;
  transition: transform var(--t-med), box-shadow var(--t-med), border-color var(--t-med);
}
.price-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-l); }
.price-card.featured {
  border: 2px solid var(--c-accent);
  box-shadow: var(--shadow-l);
  background: linear-gradient(180deg, #eef2ff 0%, #fff 30%);
}
.price-badge {
  position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
  background: linear-gradient(90deg, #4f46e5, #7c3aed);
  color: #fff; font-family: var(--f-head); font-weight: 600; font-size: .78rem;
  padding: 5px 16px; border-radius: 999px; white-space: nowrap;
  box-shadow: 0 4px 12px rgba(79,70,229,.35);
}
.price-card .plan-name { font-family: var(--f-head); font-weight: 700; font-size: 1.12rem; color: var(--c-primary); }
.price-card .plan-for { font-size: .85rem; color: var(--c-fg-muted); min-height: 2.6em; margin-top: 4px; }
.price-amount { display: flex; align-items: baseline; gap: 4px; margin: 14px 0 2px; }
.price-amount .cur { font-family: var(--f-head); font-weight: 600; font-size: 1.05rem; color: var(--c-primary); }
.price-amount .num { font-family: var(--f-head); font-weight: 700; font-size: 2.3rem; color: var(--c-primary); line-height: 1; font-variant-numeric: tabular-nums; }
.price-amount .per { font-size: .88rem; color: var(--c-fg-muted); }
.price-card .price-note { font-size: .8rem; color: var(--c-fg-muted); margin-bottom: 14px; }
.price-feats { list-style: none; padding: 16px 0 20px; margin: 0; border-top: 1px solid var(--c-border); display: grid; gap: 10px; flex: 1; }
.price-feats li { display: flex; gap: 9px; align-items: flex-start; font-size: .9rem; color: var(--c-secondary); }
.price-feats svg { width: 17px; height: 17px; flex: none; margin-top: 2px; color: var(--c-success); }
.price-feats li.na { color: #94a3b8; }
.price-feats li.na svg { color: #cbd5e1; }
.price-card .btn { width: 100%; }

/* ---------- WeChat pay button ---------- */
.btn-wechat { background: #07c160; color: #fff; }
.btn-wechat:hover { background: #06ad56; color: #fff; }
.btn-wechat svg { width: 20px; height: 20px; }

/* ---------- Alerts ---------- */
.alert {
  display: flex; gap: 10px; align-items: flex-start;
  border-radius: var(--radius-s); padding: 13px 16px;
  font-size: .9rem; margin-bottom: 18px;
}
.alert svg { width: 18px; height: 18px; flex: none; margin-top: 2px; }
.alert-info { background: #eef2ff; border: 1px solid #c7d2fe; color: #3730a3; }
.alert-warn { background: #fffbeb; border: 1px solid #fde68a; color: #92400e; }
.alert-success { background: #f0fdf4; border: 1px solid #bbf7d0; color: #166534; }

/* ---------- Pay page ---------- */
.pay-layout { display: grid; grid-template-columns: minmax(0, 1fr) 380px; gap: clamp(28px, 4vw, 56px); align-items: start; }
@media (max-width: 900px) { .pay-layout { grid-template-columns: 1fr; } }

.pay-summary {
  background: var(--c-surface); border: 1px solid var(--c-border); border-radius: var(--radius);
  padding: 24px;
}
.pay-summary .row { display: flex; justify-content: space-between; gap: 12px; padding: 9px 0; font-size: .93rem; color: var(--c-secondary); }
.pay-summary .row + .row { border-top: 1px dashed var(--c-border); }
.pay-summary .row strong { color: var(--c-primary); }
.pay-summary .total { font-family: var(--f-head); font-size: 1.05rem; }
.pay-summary .total strong { color: var(--c-accent); font-size: 1.3rem; }

.qr-panel { text-align: center; }
.qr-frame {
  width: 250px; height: 250px; margin: 0 auto 14px;
  border: 1px solid var(--c-border); border-radius: var(--radius);
  background: #fff; padding: 12px;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow);
}
.qr-frame img, .qr-frame svg { width: 100%; height: 100%; }
.qr-status { display: inline-flex; align-items: center; gap: 8px; font-size: .92rem; color: var(--c-fg-muted); }
.qr-status.paid { color: var(--c-success); font-weight: 600; }

.spin {
  width: 16px; height: 16px; border-radius: 50%;
  border: 2px solid #c7d2fe; border-top-color: var(--c-accent);
  animation: dx-spin .8s linear infinite;
}
@keyframes dx-spin { to { transform: rotate(360deg); } }

.pay-steps { list-style: none; padding: 0; margin: 18px 0 0; display: grid; gap: 8px; text-align: left; }
.pay-steps li { display: flex; gap: 10px; font-size: .88rem; color: var(--c-fg-muted); }
.pay-steps .n {
  width: 22px; height: 22px; flex: none; border-radius: 50%;
  background: var(--c-accent-soft); color: var(--c-accent);
  font-family: var(--f-head); font-weight: 700; font-size: .78rem;
  display: flex; align-items: center; justify-content: center;
}

/* ---------- Methodology step number ---------- */
.step-num {
  width: 46px; height: 46px; border-radius: 50%;
  background: linear-gradient(135deg, #4f46e5, #7c3aed); color: #fff;
  font-family: var(--f-head); font-weight: 700; font-size: 1.1rem;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 6px 16px rgba(79,70,229,.3);
  margin-bottom: 14px;
}

/* ---------- Platform tiles(AI 平台墙)---------- */
.brand-tile.plat { filter: none; opacity: 1; gap: 8px; display: flex; }
.brand-tile.plat svg { width: 20px; height: 20px; color: var(--c-accent); }