/* ============================================================
   溯源背调 · 官网样式表
   ============================================================ */

:root {
  /* 品牌色 */
  --brand-900: #064e3b;
  --brand-800: #065f46;
  --brand-700: #047857;
  --brand-600: #059669;
  --brand-500: #10b981;
  --brand-400: #34d399;
  --brand-100: #d1fae5;
  --brand-50: #ecfdf5;

  --accent: #0d9488;
  --accent-dark: #0d9488;
  --accent-50: #e6f6f1;

  --ink-900: #0e211a;
  --ink-700: #2a3b33;
  --ink-500: #56685f;
  --ink-400: #7b8d84;
  --ink-200: #c6d5cc;
  --line: #e4efe8;
  --bg: #ffffff;
  --bg-soft: #f5faf7;
  --bg-soft-2: #eaf6ef;

  --radius-s: 8px;
  --radius: 14px;
  --radius-l: 22px;
  --shadow-s: 0 2px 8px rgba(6, 60, 44, .06);
  --shadow: 0 8px 28px rgba(6, 60, 44, .09);
  --shadow-l: 0 18px 50px rgba(6, 60, 44, .14);

  --max: 1200px;
  --header-h: 72px;
  --font: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", -apple-system,
    BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--ink-700);
  background: var(--bg);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

.wrap { width: min(100% - 48px, var(--max)); margin-inline: auto; }

/* ---------- 通用文字 ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; letter-spacing: .16em; text-transform: uppercase;
  color: var(--brand-600); font-weight: 600;
}
.eyebrow::before {
  content: ""; width: 22px; height: 2px; border-radius: 2px;
  background: linear-gradient(90deg, var(--brand-500), var(--accent));
}
.section-title {
  font-size: clamp(26px, 3.2vw, 40px);
  line-height: 1.3; font-weight: 800; color: var(--ink-900);
  letter-spacing: -.01em; margin-top: 14px;
}
.section-sub {
  margin-top: 14px; color: var(--ink-500);
  font-size: 16.5px; max-width: 720px;
}
.section-head { margin-bottom: 52px; }
.section-head.center { text-align: center; }
.section-head.center .section-sub { margin-inline: auto; }
.section-head.center .eyebrow { justify-content: center; }

section { padding: 96px 0; }
section.tint { background: var(--bg-soft); }
section.tint-2 { background: var(--bg-soft-2); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 46px; padding: 0 26px; border-radius: 999px;
  font-size: 15.5px; font-weight: 600; white-space: nowrap;
  transition: all .25s ease;
}
.btn-primary {
  background: linear-gradient(135deg, var(--brand-600), var(--brand-500));
  color: #fff; box-shadow: 0 8px 20px rgba(5, 150, 105, .28);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 28px rgba(5, 150, 105, .36); }
.btn-ghost {
  background: #fff; color: var(--brand-700); border: 1.5px solid var(--brand-200, var(--ink-200));
  border-color: var(--ink-200);
}
.btn-ghost:hover { border-color: var(--brand-500); color: var(--brand-600); transform: translateY(-2px); }
.btn-light { background: rgba(255,255,255,.14); color:#fff; border:1.5px solid rgba(255,255,255,.4); backdrop-filter: blur(6px); }
.btn-light:hover { background: rgba(255,255,255,.24); }
.btn-sm { height: 38px; padding: 0 18px; font-size: 14.5px; }
.btn-block { width: 100%; }

/* ============================================================
   Header
   ============================================================ */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--header-h);
  background: rgba(255,255,255,.82);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: all .3s ease;
}
.header.scrolled { border-bottom-color: var(--line); box-shadow: 0 4px 20px rgba(6,60,44,.05); }
.header .wrap { height: 100%; display: flex; align-items: center; gap: 32px; }

.logo { display: flex; align-items: center; gap: 11px; flex-shrink: 0; }
.logo-mark {
  width: 38px; height: 38px; border-radius: 11px;
  background: linear-gradient(135deg, var(--brand-700), var(--brand-500) 60%, var(--accent));
  display: grid; place-items: center; color: #fff;
  box-shadow: 0 6px 16px rgba(5,150,105,.3);
}
.logo-mark svg { width: 22px; height: 22px; }
.logo-text { line-height: 1.15; }
.logo-text b { display: block; font-size: 19px; font-weight: 800; color: var(--ink-900); letter-spacing: .02em; }
.logo-text span { display: block; font-size: 10.5px; letter-spacing: .18em; color: var(--ink-400); text-transform: uppercase; }

.nav { margin-left: auto; display: flex; align-items: center; gap: 6px; }
.nav a {
  position: relative; padding: 8px 16px; font-size: 15.5px; font-weight: 500;
  color: var(--ink-700); border-radius: 8px; transition: all .2s;
}
.nav a:hover { color: var(--brand-600); background: var(--brand-50); }
.nav a.active { color: var(--brand-600); font-weight: 600; }
.nav a.active::after {
  content: ""; position: absolute; left: 16px; right: 16px; bottom: 2px;
  height: 2.5px; border-radius: 2px; background: var(--brand-500);
}
.header-actions { display: flex; align-items: center; gap: 12px; }
.header-phone { font-size: 15px; font-weight: 700; color: var(--ink-900); }

.burger { display: none; width: 40px; height: 40px; border-radius: 10px; background: var(--bg-soft); }
.burger span { display:block; width:18px; height:2px; background: var(--ink-700); margin: 3px auto; border-radius: 2px; transition: .25s; }

/* ============================================================
   Hero
   ============================================================ */
.hero {
  position: relative; padding: calc(var(--header-h) + 84px) 0 96px;
  background:
    radial-gradient(1100px 620px at 78% -8%, rgba(16,185,129,.16), transparent 62%),
    radial-gradient(760px 520px at 4% 96%, rgba(20,184,166,.13), transparent 62%),
    linear-gradient(180deg, #f4fbf7 0%, #ffffff 100%);
  overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(5,150,105,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(5,150,105,.045) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(760px 520px at 60% 20%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(760px 520px at 60% 20%, #000 20%, transparent 78%);
  pointer-events: none;
}
.hero .wrap { position: relative; z-index: 2; display: grid; grid-template-columns: 1.06fr .94fr; gap: 56px; align-items: center; }

.hero-badge {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 7px 16px 7px 8px; border-radius: 999px;
  background: #fff; border: 1px solid var(--brand-100);
  box-shadow: var(--shadow-s); font-size: 13.5px; color: var(--ink-700);
}
.hero-badge i {
  font-style: normal; background: var(--accent-50); color: var(--accent-dark);
  padding: 2px 10px; border-radius: 999px; font-weight: 700; font-size: 12.5px;
}
.hero h1 {
  margin-top: 24px; font-size: clamp(34px, 4.6vw, 58px); line-height: 1.18;
  font-weight: 800; color: var(--ink-900); letter-spacing: -.02em;
}
.hero h1 .hl {
  background: linear-gradient(120deg, var(--brand-600), var(--accent-dark));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-slogan {
  margin-top: 20px; font-size: clamp(18px, 2.1vw, 23px); font-weight: 700;
  color: var(--brand-700); letter-spacing: .04em;
}
.hero-desc { margin-top: 16px; font-size: 17px; color: var(--ink-500); max-width: 540px; }
.hero-cta { margin-top: 34px; display: flex; gap: 14px; flex-wrap: wrap; }
.hero-note { margin-top: 18px; font-size: 13.5px; color: var(--ink-400); display: flex; align-items: center; gap: 8px; }
.hero-note svg { width: 16px; height: 16px; color: var(--accent-dark); }

.hero-stats { margin-top: 46px; display: flex; gap: 14px; flex-wrap: wrap; }
.hero-stat {
  flex: 1 1 120px; padding: 16px 18px; border-radius: var(--radius);
  background: rgba(255,255,255,.9); border: 1px solid var(--brand-100);
  box-shadow: var(--shadow-s); backdrop-filter: blur(6px);
}
.hero-stat b { display: block; font-size: 26px; font-weight: 800; color: var(--brand-700); line-height: 1.2; }
.hero-stat span { font-size: 13px; color: var(--ink-500); }

/* 报告卡片 */
.report-card {
  position: relative; background: #fff; border-radius: var(--radius-l);
  box-shadow: var(--shadow-l); border: 1px solid var(--line); overflow: hidden;
}
.report-head {
  display: flex; align-items: center; gap: 10px; padding: 16px 20px;
  border-bottom: 1px solid var(--line); background: linear-gradient(180deg, #f7fcf9, #fff);
}
.dot { width: 10px; height: 10px; border-radius: 50%; }
.dot.r { background: #ff5f57; } .dot.y { background: #febc2e; } .dot.g { background: #28c840; }
.report-head span { margin-left: 6px; font-size: 13.5px; color: var(--ink-500); font-weight: 500; }
.report-body { padding: 20px; }
.rb-title { display: flex; align-items: center; justify-content: space-between; margin-bottom: 4px; }
.rb-title b { font-size: 16px; color: var(--ink-900); }
.tag-risk { font-size: 12px; padding: 3px 10px; border-radius: 999px; font-weight: 700; }
.tag-risk.ok { background: #e9f9f0; color: #12805c; }
.tag-risk.warn { background: #fff5e6; color: #b26a00; }
.report-row {
  display: flex; align-items: center; gap: 12px; padding: 13px 14px;
  border: 1px solid var(--line); border-radius: var(--radius-s); margin-top: 11px;
  background: #fff; transition: .25s;
}
.report-row:hover { border-color: var(--brand-100); background: var(--brand-50); }
.rr-icon {
  width: 34px; height: 34px; border-radius: 9px; display: grid; place-items: center;
  flex-shrink: 0; background: var(--brand-50); color: var(--brand-600);
}
.rr-icon svg { width: 18px; height: 18px; }
.rr-icon.ok { background: #e9f9f0; color: #12805c; }
.rr-icon.warn { background: #fff2e3; color: #c1760a; }
.rr-txt { flex: 1; min-width: 0; }
.rr-txt b { display: block; font-size: 14.5px; color: var(--ink-900); font-weight: 600; }
.rr-txt small { font-size: 12.5px; color: var(--ink-400); }
.rr-state { font-size: 13px; font-weight: 700; }
.rr-state.ok { color: #12805c; } .rr-state.warn { color: #c1760a; }
.report-foot {
  padding: 13px 20px; border-top: 1px solid var(--line); background: var(--bg-soft);
  display: flex; align-items: center; justify-content: space-between;
  font-size: 13px; color: var(--ink-500);
}
.progress { height: 6px; border-radius: 999px; background: var(--line); overflow: hidden; margin-top: 10px; }
.progress i { display: block; height: 100%; border-radius: 999px; background: linear-gradient(90deg, var(--brand-500), var(--accent)); width: 0; transition: width 1.6s cubic-bezier(.22,1,.36,1); }

.floating-badge {
  position: absolute; bottom: -18px; left: -26px; background: #fff;
  border-radius: var(--radius); padding: 12px 16px; box-shadow: var(--shadow-l);
  border: 1px solid var(--line); display: flex; align-items: center; gap: 10px; z-index: 3;
}
.floating-badge svg { width: 26px; height: 26px; color: var(--accent-dark); }
.floating-badge b { display: block; font-size: 15px; color: var(--ink-900); }
.floating-badge small { font-size: 12px; color: var(--ink-400); }

/* ============================================================
   客户 logo 条
   ============================================================ */
.logos { padding: 40px 0 52px; background: #fff; border-bottom: 1px solid var(--line); }
.logos-head { text-align: center; font-size: 14px; color: var(--ink-400); letter-spacing: .08em; margin-bottom: 26px; }
.logo-row { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; }
.logo-chip {
  padding: 10px 22px; border-radius: 10px; background: var(--bg-soft);
  font-size: 15px; font-weight: 700; color: var(--ink-500);
  border: 1px solid var(--line); transition: .25s;
}
.logo-chip:hover { color: var(--brand-600); background: var(--brand-50); border-color: var(--brand-100); transform: translateY(-2px); }

/* ============================================================
   卡片网格
   ============================================================ */
.grid { display: grid; gap: 24px; }
.g4 { grid-template-columns: repeat(4, 1fr); }
.g3 { grid-template-columns: repeat(3, 1fr); }
.g2 { grid-template-columns: repeat(2, 1fr); }

.card {
  position: relative; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius-l); padding: 30px 26px; transition: all .3s ease;
  overflow: hidden;
}
.card::after {
  content: ""; position: absolute; left: 0; top: 0; height: 3px; width: 0;
  background: linear-gradient(90deg, var(--brand-500), var(--accent)); transition: width .4s ease;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
.card:hover::after { width: 100%; }
.card-ico {
  width: 52px; height: 52px; border-radius: 15px; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--brand-100), var(--accent-50));
  color: var(--brand-600); margin-bottom: 18px;
}
.card-ico svg { width: 26px; height: 26px; }
.card h3 { font-size: 19px; font-weight: 700; color: var(--ink-900); margin-bottom: 8px; }
.card p { font-size: 14.8px; color: var(--ink-500); }

/* ============================================================
   产品介绍
   ============================================================ */
.prod-list { display: grid; gap: 22px; }
.prod {
  display: grid; grid-template-columns: 210px 1fr 190px; gap: 28px; align-items: center;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-l);
  padding: 28px 30px; transition: .3s;
}
.prod:hover { box-shadow: var(--shadow); border-color: var(--brand-100); transform: translateY(-3px); }
.prod-name b { display: block; font-size: 20px; font-weight: 800; color: var(--ink-900); }
.prod-name span { font-size: 13px; color: var(--brand-600); font-weight: 600; }
.prod-name p { margin-top: 10px; font-size: 13.5px; color: var(--ink-400); }
.prod-items { display: flex; flex-wrap: wrap; gap: 8px; }
.prod-items li {
  font-size: 13.5px; color: var(--ink-700); background: var(--bg-soft);
  border: 1px solid var(--line); padding: 5px 12px; border-radius: 8px;
}
.prod-meta { text-align: right; }
.prod-meta .speed { font-size: 14px; color: var(--ink-700); font-weight: 600; }
.prod-meta .speed b { color: var(--brand-600); font-size: 17px; }
.prod-meta .btn { margin-top: 12px; }

/* ============================================================
   套餐
   ============================================================ */
.price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; align-items: stretch; }
.price {
  position: relative; background: #fff; border: 1.5px solid var(--line);
  border-radius: var(--radius-l); padding: 30px 26px 28px;
  display: flex; flex-direction: column; transition: .3s;
}
.price:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.price.hot {
  border-color: var(--brand-500);
  box-shadow: 0 16px 40px rgba(5,150,105,.16);
}
.price.free { background: linear-gradient(180deg, var(--accent-50), #fff 40%); border-color: var(--accent); }
.price-tag {
  position: absolute; top: -13px; left: 50%; transform: translateX(-50%);
  padding: 4px 16px; border-radius: 999px; font-size: 12.5px; font-weight: 700; color: #fff;
  background: linear-gradient(135deg, var(--brand-600), var(--brand-500)); white-space: nowrap;
  box-shadow: 0 6px 14px rgba(5,150,105,.3);
}
.price-tag.g { background: linear-gradient(135deg, var(--accent-dark), var(--accent)); }
.price-name { font-size: 18px; font-weight: 800; color: var(--ink-900); }
.price-for { font-size: 13.5px; color: var(--ink-400); margin-top: 4px; min-height: 22px; }
.price-num { margin: 16px 0 4px; display: flex; align-items: baseline; gap: 4px; }
.price-num .cny { font-size: 18px; font-weight: 700; color: var(--ink-700); }
.price-num b { font-size: 40px; font-weight: 800; color: var(--ink-900); line-height: 1; letter-spacing: -.02em; }
.price-num .unit { font-size: 14px; color: var(--ink-400); }
.price-num.zero b { color: var(--accent-dark); }
.price-old { font-size: 13px; color: var(--ink-400); text-decoration: line-through; height: 20px; }
.price-desc { font-size: 13.5px; color: var(--ink-500); margin-top: 10px; min-height: 44px; }
.price-list { margin: 18px 0 22px; display: grid; gap: 11px; flex: 1; }
.price-list li { display: flex; gap: 9px; font-size: 14px; color: var(--ink-700); align-items: flex-start; }
.price-list svg { width: 17px; height: 17px; flex-shrink: 0; margin-top: 3px; color: var(--brand-500); }
.price.free .price-list svg { color: var(--accent-dark); }
.price .btn { margin-top: auto; }

.price-cta-note { text-align: center; margin-top: 34px; font-size: 14px; color: var(--ink-500); }
.price-cta-note a { color: var(--brand-600); font-weight: 600; text-decoration: underline; text-underline-offset: 3px; }

/* ============================================================
   流程
   ============================================================ */
.flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; position: relative; }
.flow::before {
  content: ""; position: absolute; top: 46px; left: 8%; right: 8%; height: 2px;
  background: repeating-linear-gradient(90deg, var(--brand-200, #c6e9d5) 0 8px, transparent 8px 16px);
  background-color: transparent;
  background-image: repeating-linear-gradient(90deg, #c6e9d5 0 8px, transparent 8px 16px);
  z-index: 0;
}
.step { position: relative; z-index: 1; text-align: center; }
.step-num {
  width: 60px; height: 60px; border-radius: 50%; margin: 0 auto 18px;
  display: grid; place-items: center; font-size: 20px; font-weight: 800; color: #fff;
  background: linear-gradient(135deg, var(--brand-600), var(--brand-500));
  box-shadow: 0 10px 24px rgba(5,150,105,.28); border: 5px solid #fff;
}
.step h4 { font-size: 17px; font-weight: 700; color: var(--ink-900); margin-bottom: 7px; }
.step p { font-size: 14px; color: var(--ink-500); }

/* ============================================================
   行业
   ============================================================ */
.ind-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.ind {
  padding: 22px 20px; border-radius: var(--radius); background: #fff;
  border: 1px solid var(--line); transition: .3s; display: flex; gap: 14px; align-items: flex-start;
}
.ind:hover { background: var(--brand-50); border-color: var(--brand-100); transform: translateY(-4px); }
.ind-ico { width: 40px; height: 40px; border-radius: 11px; background: var(--brand-100); color: var(--brand-700); display: grid; place-items: center; flex-shrink: 0; }
.ind-ico svg { width: 20px; height: 20px; }
.ind b { display: block; font-size: 15.5px; color: var(--ink-900); }
.ind small { font-size: 13px; color: var(--ink-500); }

/* ============================================================
   优势 / 数据带
   ============================================================ */
.stat-band {
  background: linear-gradient(120deg, var(--brand-900), var(--brand-700) 55%, var(--brand-600));
  border-radius: var(--radius-l); padding: 52px 40px; color: #fff;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; position: relative; overflow: hidden;
}
.stat-band::after {
  content: ""; position: absolute; right: -80px; top: -80px; width: 320px; height: 320px;
  border-radius: 50%; background: radial-gradient(circle, rgba(20,184,166,.35), transparent 65%);
}
.stat-item { position: relative; z-index: 1; }
.stat-item b { display: block; font-size: 42px; font-weight: 800; letter-spacing: -.02em; line-height: 1.1; }
.stat-item b em { font-style: normal; font-size: 22px; font-weight: 700; }
.stat-item span { font-size: 14.5px; opacity: .82; }

/* ============================================================
   客户评价
   ============================================================ */
.quote-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.quote {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-l);
  padding: 26px 24px; transition: .3s; position: relative;
}
.quote:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.quote-mark { font-size: 42px; line-height: 1; color: var(--brand-100); font-weight: 800; height: 30px; }
.quote p { font-size: 14.8px; color: var(--ink-700); margin-top: 6px; }
.quote-by { margin-top: 18px; padding-top: 16px; border-top: 1px dashed var(--line); display: flex; align-items: center; gap: 11px; }
.q-avatar { width: 38px; height: 38px; border-radius: 11px; display: grid; place-items: center; font-weight: 800; color: #fff; font-size: 15px; background: linear-gradient(135deg, var(--brand-600), var(--accent)); }
.quote-by b { display: block; font-size: 14.5px; color: var(--ink-900); }
.quote-by small { font-size: 12.5px; color: var(--ink-400); }

/* ============================================================
   文章卡片
   ============================================================ */
.page-hero {
  padding: calc(var(--header-h) + 66px) 0 62px;
  background:
    radial-gradient(900px 460px at 70% -10%, rgba(16,185,129,.15), transparent 60%),
    linear-gradient(180deg, #f4fbf7, #fff);
  border-bottom: 1px solid var(--line);
}
.page-hero h1 { font-size: clamp(28px, 3.6vw, 44px); font-weight: 800; color: var(--ink-900); margin-top: 14px; letter-spacing: -.01em; }
.page-hero p { margin-top: 14px; color: var(--ink-500); font-size: 17px; max-width: 700px; }
.crumb { font-size: 13.5px; color: var(--ink-400); }
.crumb a:hover { color: var(--brand-600); }

.filter-row { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 34px; }
.chip {
  padding: 7px 18px; border-radius: 999px; font-size: 14.5px; font-weight: 600;
  background: #fff; border: 1px solid var(--line); color: var(--ink-500); transition: .22s;
}
.chip:hover { border-color: var(--brand-400); color: var(--brand-600); }
.chip.on { background: var(--brand-600); border-color: var(--brand-600); color: #fff; }

.art-feature {
  display: grid; grid-template-columns: 1.05fr 1fr; gap: 0;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-l);
  overflow: hidden; margin-bottom: 28px;
}
.art-feature:hover { box-shadow: var(--shadow); }
.art-cover { min-height: 300px; position: relative; display: grid; place-items: center; }
.art-cover.c1 { background: linear-gradient(135deg, #047857, #10b981 60%, #14b8a6); }
.art-cover.c2 { background: linear-gradient(135deg, #10372a, #0d9488); }
.art-cover.c3 { background: linear-gradient(135deg, #2b1a5e, #6d4bd8); }
.art-cover { background-size: cover; background-position: center; }
.art-cover[style*="background-image"]::after { content: ""; position: absolute; inset: 0; background: rgba(6,60,44,.5); border-radius: inherit; }
.art-cover[style*="background-image"] .art-cover-in { position: relative; z-index: 1; text-shadow: 0 2px 10px rgba(6,60,44,.5); }
.art-cover-in { text-align: center; color: #fff; padding: 34px; }
.art-cover-in b { font-size: 15px; letter-spacing: .2em; opacity: .8; display: block; }
.art-cover-in h3 { font-size: 26px; font-weight: 800; margin-top: 12px; line-height: 1.4; }
.art-cover-in p { margin-top: 12px; font-size: 14px; opacity: .85; }
.art-feature .art-body { padding: 34px 34px; display: flex; flex-direction: column; justify-content: center; }
.art-meta { display: flex; align-items: center; gap: 12px; font-size: 13px; color: var(--ink-400); }
.art-tag { padding: 3px 11px; border-radius: 6px; font-size: 12.5px; font-weight: 700; background: var(--brand-100); color: var(--brand-700); }
.art-body h3 { font-size: 22px; font-weight: 800; color: var(--ink-900); margin: 12px 0 10px; line-height: 1.45; }
.art-body p { font-size: 15px; color: var(--ink-500); }
.art-more { margin-top: 20px; display: inline-flex; align-items: center; gap: 6px; color: var(--brand-600); font-weight: 600; font-size: 14.5px; }
.art-more svg { width: 16px; height: 16px; transition: transform .25s; }
.art-feature:hover .art-more svg, .art-card:hover .art-more svg { transform: translateX(4px); }

.art-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.art-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-l);
  overflow: hidden; display: flex; flex-direction: column; transition: .3s;
}
.art-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.art-card .thumb { height: 158px; position: relative; display: grid; place-items: center; color: #fff; overflow: hidden; border-radius: 14px 14px 0 0; }
.art-card .thumb img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .45s ease; }
.art-card:hover .thumb img { transform: scale(1.05); }
.art-card .thumb b { position: relative; z-index: 1; font-size: 17px; font-weight: 800; letter-spacing: .05em; opacity: .95; padding: 0 22px; text-align: center; line-height: 1.5; }
.art-card .art-info { padding: 22px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.art-card h3 { font-size: 17px; font-weight: 700; color: var(--ink-900); line-height: 1.5; margin: 10px 0 8px; }
.art-card p { font-size: 14px; color: var(--ink-500); flex: 1; }
.art-card .art-foot { margin-top: 16px; padding-top: 14px; border-top: 1px dashed var(--line); display: flex; align-items: center; justify-content: space-between; font-size: 13px; color: var(--ink-400); }

.t1 { background: linear-gradient(135deg, #059669, #34d399); }
.t2 { background: linear-gradient(135deg, #0d9488, #2dd4bf); }
.t3 { background: linear-gradient(135deg, #334155, #64748b); }
.t4 { background: linear-gradient(135deg, #7c3aed, #a78bfa); }
.t5 { background: linear-gradient(135deg, #b45309, #fbbf24); }
.t6 { background: linear-gradient(135deg, #be123c, #fb7185); }

/* 下载区 */
.dl-box {
  display: grid; grid-template-columns: 1fr auto; gap: 26px; align-items: center;
  background: linear-gradient(120deg, var(--brand-900), var(--brand-700));
  border-radius: var(--radius-l); padding: 40px 44px; color: #fff; position: relative; overflow: hidden;
}
.dl-box::after { content:""; position:absolute; right:-60px; bottom:-100px; width:280px; height:280px; border-radius:50%; background: radial-gradient(circle, rgba(255,255,255,.14), transparent 68%); }
.dl-box h3 { font-size: 24px; font-weight: 800; position: relative; z-index: 1; }
.dl-box p { margin-top: 10px; opacity: .85; font-size: 15px; position: relative; z-index: 1; }
.dl-box .btn { position: relative; z-index: 1; }

/* ============================================================
   关于我们
   ============================================================ */
.about-intro { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.about-intro h2 { font-size: clamp(25px, 3vw, 36px); font-weight: 800; color: var(--ink-900); line-height: 1.35; margin-top: 14px; }
.about-intro p { margin-top: 16px; color: var(--ink-500); font-size: 16px; }
.about-visual {
  position: relative; border-radius: var(--radius-l); overflow: hidden;
  background: linear-gradient(135deg, var(--brand-800), var(--brand-500) 65%, var(--accent));
  min-height: 380px; display: grid; place-items: center; color: #fff; padding: 40px;
  box-shadow: var(--shadow-l);
}
.about-visual-in { text-align: center; }
.about-visual-in .big { font-size: 64px; font-weight: 800; line-height: 1; letter-spacing: -.02em; }
.about-visual-in .big em { font-style: normal; font-size: 26px; }
.about-visual-in p { margin-top: 14px; font-size: 15px; opacity: .9; }
.av-chips { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-top: 26px; }
.av-chips span { padding: 6px 14px; border-radius: 999px; background: rgba(255,255,255,.16); border: 1px solid rgba(255,255,255,.3); font-size: 13px; }

.timeline { position: relative; padding-left: 34px; }
.timeline::before { content: ""; position: absolute; left: 9px; top: 8px; bottom: 8px; width: 2px; background: linear-gradient(180deg, var(--brand-500), var(--brand-100)); }
.tl-item { position: relative; padding-bottom: 30px; }
.tl-item::before {
  content: ""; position: absolute; left: -30px; top: 7px; width: 12px; height: 12px;
  border-radius: 50%; background: #fff; border: 3px solid var(--brand-500);
}
.tl-year { font-size: 15px; font-weight: 800; color: var(--brand-600); letter-spacing: .04em; }
.tl-item h4 { font-size: 16.5px; font-weight: 700; color: var(--ink-900); margin: 4px 0 5px; }
.tl-item p { font-size: 14.5px; color: var(--ink-500); }

.cert-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.cert {
  text-align: center; padding: 26px 18px; border-radius: var(--radius-l);
  background: #fff; border: 1px solid var(--line); transition: .3s;
}
.cert:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: var(--brand-100); }
.cert-ico { width: 52px; height: 52px; margin: 0 auto 14px; border-radius: 50%; display: grid; place-items: center; background: var(--brand-50); color: var(--brand-600); }
.cert-ico svg { width: 26px; height: 26px; }
.cert b { display: block; font-size: 15.5px; color: var(--ink-900); }
.cert small { font-size: 13px; color: var(--ink-400); }

.value-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.value {
  padding: 28px 26px; border-radius: var(--radius-l); background: #fff;
  border: 1px solid var(--line); transition: .3s;
}
.value:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.value b { display: block; font-size: 17.5px; color: var(--ink-900); margin-bottom: 8px; }
.value p { font-size: 14.8px; color: var(--ink-500); }
.value em { font-style: normal; display: inline-block; margin-bottom: 12px; font-size: 13px; font-weight: 700; color: var(--brand-600); background: var(--brand-50); padding: 3px 12px; border-radius: 999px; }

/* 联系信息 */
.contact-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.contact-c { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-l); padding: 26px 22px; text-align: center; transition: .3s; }
.contact-c:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.contact-c svg { width: 26px; height: 26px; color: var(--brand-600); }
.contact-c b { display: block; margin: 12px 0 6px; font-size: 15.5px; color: var(--ink-900); }
.contact-c span { font-size: 14.5px; color: var(--ink-500); }
.contact-c span.hl { color: var(--brand-700); font-weight: 700; font-size: 17px; }

/* ============================================================
   CTA
   ============================================================ */
.cta-band {
  background: linear-gradient(120deg, var(--brand-900) 0%, var(--brand-700) 50%, var(--brand-600) 100%);
  border-radius: var(--radius-l); padding: 58px 50px; color: #fff; text-align: center;
  position: relative; overflow: hidden;
}
.cta-band::before { content:""; position:absolute; left:-70px; top:-70px; width:280px; height:280px; border-radius:50%; background: radial-gradient(circle, rgba(20,184,166,.32), transparent 65%); }
.cta-band::after { content:""; position:absolute; right:-60px; bottom:-90px; width:300px; height:300px; border-radius:50%; background: radial-gradient(circle, rgba(255,255,255,.13), transparent 66%); }
.cta-band h2 { font-size: clamp(24px, 3vw, 36px); font-weight: 800; position: relative; z-index: 1; }
.cta-band p { margin-top: 14px; opacity: .86; font-size: 16.5px; position: relative; z-index: 1; }
.cta-btns { margin-top: 30px; display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; position: relative; z-index: 1; }
.cta-band .btn-primary { background: #fff; color: var(--brand-700); box-shadow: 0 10px 26px rgba(0,0,0,.18); }
.cta-band .btn-primary:hover { background: #ecfdf5; }

/* ============================================================
   Footer
   ============================================================ */
.footer { background: #0a241b; color: #a3b5aa; padding: 66px 0 0; margin-top: 0; }
.footer .wrap { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 40px; }
.footer h4 { color: #fff; font-size: 15.5px; font-weight: 700; margin-bottom: 18px; }
.footer ul li { margin-bottom: 11px; font-size: 14.5px; }
.footer ul a:hover { color: #fff; }
.footer .f-brand p { font-size: 14px; margin-top: 16px; max-width: 320px; line-height: 1.8; }
.f-logo { display: flex; align-items: center; gap: 11px; }
.f-logo .logo-text b { color: #fff; }
.f-logo .logo-text span { color: #5f7a6d; }
.f-contact li { display: flex; gap: 9px; align-items: flex-start; }
.f-contact svg { width: 16px; height: 16px; margin-top: 4px; color: var(--brand-400); flex-shrink: 0; }
.f-contact b { color: #fff; font-size: 15px; }
.f-bottom {
  margin-top: 46px; border-top: 1px solid rgba(255,255,255,.09);
  padding: 22px 0 26px; display: flex; justify-content: space-between; gap: 16px; flex-wrap: nowrap; white-space: nowrap;
  font-size: 13.5px; color: #5f7a6d;
}
.f-bottom a:hover { color: #fff; }

/* ============================================================
   右侧悬浮条
   ============================================================ */
.fab {
  position: fixed; right: 22px; bottom: 92px; z-index: 90;
  display: flex; flex-direction: column; gap: 12px;
}
.fab-item {
  position: relative; width: 58px; height: 58px; border-radius: 18px;
  background: #fff; border: 1px solid var(--line);
  display: grid; place-items: center; color: var(--brand-600);
  box-shadow: 0 8px 22px rgba(6,60,44,.14); transition: all .28s cubic-bezier(.34,1.4,.64,1);
  cursor: pointer;
}
.fab-item:hover { transform: translateY(-3px) scale(1.05); color: var(--brand-700); border-color: var(--brand-100); }
.fab-item svg { width: 24px; height: 24px; }
.fab-item.main {
  background: linear-gradient(135deg, var(--brand-600), var(--brand-500));
  color: #fff; border-color: transparent;
  box-shadow: 0 12px 28px rgba(5,150,105,.38);
}
.fab-item.main:hover { color: #fff; }
.fab-item .fab-tip {
  position: absolute; right: 70px; top: 50%; transform: translateY(-50%) translateX(6px);
  background: var(--ink-900); color: #fff; font-size: 13.5px; padding: 7px 14px;
  border-radius: 8px; white-space: nowrap; opacity: 0; pointer-events: none; transition: all .25s;
  box-shadow: 0 6px 16px rgba(0,0,0,.2);
}
.fab-item:hover .fab-tip { opacity: 1; transform: translateY(-50%) translateX(0); }
.fab-item .fab-tip::after {
  content: ""; position: absolute; right: -5px; top: 50%; transform: translateY(-50%) rotate(45deg);
  width: 9px; height: 9px; background: var(--ink-900);
}
.fab-badge {
  position: absolute; top: -4px; right: -4px; width: 18px; height: 18px; border-radius: 50%;
  background: #ef4444; color: #fff; font-size: 11px; font-weight: 700;
  display: grid; place-items: center; border: 2px solid #fff;
}
.fab-top { opacity: 0; pointer-events: none; }
.fab-top.show { opacity: 1; pointer-events: auto; }

/* ---------- 二维码弹窗 ---------- */
.modal {
  position: fixed; inset: 0; z-index: 200; display: grid; place-items: center;
  background: rgba(6, 40, 30, .58); backdrop-filter: blur(4px);
  opacity: 0; pointer-events: none; transition: opacity .28s;
}
.modal.open { opacity: 1; pointer-events: auto; }
.modal-card {
  background: #fff; border-radius: var(--radius-l); padding: 34px 34px 30px;
  width: min(92vw, 400px); text-align: center; position: relative;
  transform: translateY(18px) scale(.96); transition: all .3s cubic-bezier(.34,1.3,.64,1);
  box-shadow: 0 30px 70px rgba(0,0,0,.28);
}
.modal.open .modal-card { transform: translateY(0) scale(1); }
.modal-close { position: absolute; top: 14px; right: 16px; width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center; color: var(--ink-400); }
.modal-close:hover { background: var(--bg-soft); color: var(--ink-700); }
.modal-close svg { width: 18px; height: 18px; }
.modal h3 { font-size: 20px; font-weight: 800; color: var(--ink-900); }
.modal .m-sub { font-size: 14px; color: var(--ink-500); margin-top: 7px; }
.qr-frame {
  margin: 22px auto 6px; width: 208px; height: 208px; padding: 12px;
  border-radius: var(--radius); border: 1.5px solid var(--line); background: #fff;
  box-shadow: var(--shadow-s); position: relative;
}
.qr-frame img { width: 100%; height: 100%; object-fit: contain; }
.qr-corner { position: absolute; width: 16px; height: 16px; border: 2.5px solid var(--brand-600); }
.qr-corner.a { top: -1px; left: -1px; border-right: 0; border-bottom: 0; border-radius: 6px 0 0 0; }
.qr-corner.b { top: -1px; right: -1px; border-left: 0; border-bottom: 0; border-radius: 0 6px 0 0; }
.qr-corner.c { bottom: -1px; left: -1px; border-right: 0; border-top: 0; border-radius: 0 0 0 6px; }
.qr-corner.d { bottom: -1px; right: -1px; border-left: 0; border-top: 0; border-radius: 0 0 6px 0; }
.modal .m-tip { font-size: 13.5px; color: var(--ink-500); margin-top: 14px; }
.modal .m-tip b { color: var(--brand-700); }
.m-actions { margin-top: 18px; display: grid; gap: 10px; }
.m-actions .btn { height: 42px; }

/* ============================================================
   套餐核查项对比表
   ============================================================ */
.cmp-wrap { margin-top: 46px; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.cmp {
  width: 100%; min-width: 720px; border-collapse: separate; border-spacing: 0;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; font-size: 14.5px;
}
.cmp th, .cmp td { padding: 14px 16px; text-align: center; border-bottom: 1px solid var(--line); }
.cmp thead th {
  background: var(--bg-soft); font-size: 14.5px; font-weight: 700; color: var(--ink-900);
  position: sticky; top: 0;
}
.cmp thead th.hot { background: var(--brand-50); color: var(--brand-700); }
.cmp tbody th {
  text-align: left; font-weight: 500; color: var(--ink-700); background: #fff;
  white-space: nowrap;
}
.cmp tbody tr:last-child th, .cmp tbody tr:last-child td { border-bottom: 0; }
.cmp tbody tr:hover th, .cmp tbody tr:hover td { background: var(--brand-50); }
.cmp td.hot { background: rgba(16,185,129,.045); }
.cmp .yes { color: var(--brand-600); font-weight: 700; }
.cmp .no { color: var(--ink-200); }
.cmp .num { color: var(--ink-900); font-weight: 700; }
.cmp-plan tbody th { white-space: normal; font-weight: 700; color: var(--ink-900); }
.cmp-plan td { text-align: left; vertical-align: top; line-height: 1.75; }
.cmp-plan td.num { color: var(--brand-600); font-weight: 700; white-space: nowrap; }
.cmp-caption { text-align: center; font-size: 13.5px; color: var(--ink-400); margin-top: 14px; }

/* ============================================================
   表单 / 申请弹窗
   ============================================================ */
.m-form { margin-top: 20px; display: grid; gap: 13px; text-align: left; }
.field label { display: block; font-size: 13px; color: var(--ink-500); margin-bottom: 6px; font-weight: 600; }
.field input, .field select {
  width: 100%; height: 44px; padding: 0 14px; font-size: 15px; font-family: inherit;
  border: 1.5px solid var(--line); border-radius: var(--radius-s); background: #fff;
  color: var(--ink-900); transition: .2s;
}
.field input:focus, .field select:focus {
  outline: none; border-color: var(--brand-500); box-shadow: 0 0 0 3px rgba(16,185,129,.12);
}
.field input::placeholder { color: var(--ink-400); }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-note { font-size: 12.5px; color: var(--ink-400); text-align: center; margin-top: 4px; }
.form-note a { color: var(--brand-600); text-decoration: underline; text-underline-offset: 2px; }
.form-err { font-size: 12.5px; color: #d93025; min-height: 18px; text-align: center; }
.form-done { padding: 12px 0 4px; text-align: center; }
.form-done .ok-ico {
  width: 62px; height: 62px; margin: 4px auto 16px; border-radius: 50%;
  display: grid; place-items: center; background: var(--accent-50); color: var(--accent-dark);
}
.form-done .ok-ico svg { width: 32px; height: 32px; }
.form-done h3 { font-size: 19px; font-weight: 800; color: var(--ink-900); }
.form-done p { font-size: 14px; color: var(--ink-500); margin-top: 8px; }

/* ---------- 滚动动画 ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s cubic-bezier(.22,1,.36,1); }
.reveal.in { opacity: 1; transform: none; }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1080px) {
  .hero .wrap { grid-template-columns: 1fr; gap: 48px; }
  .hero { padding-top: calc(var(--header-h) + 60px); }
  .floating-badge { left: 12px; }
  .g4, .price-grid, .flow, .ind-grid, .cert-grid, .contact-grid, .stat-band { grid-template-columns: repeat(2, 1fr); }
  .g3, .quote-grid, .art-grid, .value-grid { grid-template-columns: repeat(2, 1fr); }
  .flow::before { display: none; }
  .footer .wrap { grid-template-columns: 1fr 1fr; }
  .prod { grid-template-columns: 1fr; gap: 18px; }
  .prod-meta { text-align: left; display: flex; align-items: center; gap: 16px; }
  .prod-meta .btn { margin-top: 0; }
  .about-intro { grid-template-columns: 1fr; gap: 36px; }
  .art-feature { grid-template-columns: 1fr; }
}

@media (max-width: 780px) {
  .wrap { width: min(100% - 32px, var(--max)); }
  section { padding: 66px 0; }
  .nav {
    position: fixed; top: var(--header-h); left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--line);
    flex-direction: column; align-items: stretch; gap: 0; padding: 12px 20px 20px;
    box-shadow: var(--shadow); transform: translateY(-12px); opacity: 0; pointer-events: none;
    transition: all .26s;
  }
  .nav.open { transform: none; opacity: 1; pointer-events: auto; }
  .nav a { padding: 12px 6px; font-size: 16px; border-bottom: 1px solid var(--line); border-radius: 0; }
  .nav a.active::after { display: none; }
  .header-actions .btn, .header-phone { display: none; }
  .burger { display: block; margin-left: auto; }
  .g4, .g3, .g2, .price-grid, .flow, .ind-grid, .cert-grid, .contact-grid, .stat-band,
  .quote-grid, .art-grid, .value-grid { grid-template-columns: 1fr; }
  .stat-band { padding: 38px 26px; }
  .stat-item b { font-size: 34px; }
  .cta-band, .dl-box { padding: 38px 24px; border-radius: var(--radius); }
  .dl-box { grid-template-columns: 1fr; text-align: center; }
  .footer .wrap { grid-template-columns: 1fr; gap: 30px; }
  .fab { right: 12px; bottom: 74px; }
  .fab-item { width: 50px; height: 50px; border-radius: 15px; }
  .fab-item .fab-tip { display: none; }
  .hero-stats { gap: 10px; }
  .hero-stat { flex: 1 1 44%; padding: 12px 14px; }
  .floating-badge { display: none; }
  .modal-card { padding: 28px 22px 24px; }
}

/* ---------- 列表分页 ---------- */
.pager { display: flex; gap: 8px; justify-content: center; align-items: center; flex-wrap: wrap; margin-top: 38px; }
.pager-btn { display: inline-flex; align-items: center; justify-content: center; min-width: 40px; height: 40px; padding: 0 14px; border: 1px solid #d7e6dd; border-radius: 10px; background: #fff; color: #2a3b33; font-size: 14px; font-weight: 600; text-decoration: none; transition: all .2s; }
.pager-btn:hover { border-color: #10b981; color: #059669; }
.pager-btn.on { background: #059669; border-color: #059669; color: #fff; }
.pager-dots { color: #7b8d84; padding: 0 4px; }
.pager-info { text-align: center; color: #7b8d84; font-size: 13px; margin-top: 12px; }

/* 图片 logo（替换内联 SVG 徽标） */
.logo-mark { background: none; }
.logo-mark img { width: 100%; height: 100%; object-fit: contain; display: block; border-radius: inherit; }