/* =========================================================
   战国seo · 站点样式
   ========================================================= */
:root {
  --ink: #0b1220;
  --ink-2: #16213a;
  --ink-3: #2a3550;
  --paper: #ffffff;
  --bg: #f6f8fc;
  --bg-soft: #eef2f9;
  --line: #e3e8f2;
  --line-dark: rgba(255, 255, 255, 0.14);
  --brand: #2a5bff;
  --brand-2: #0aa8a7;
  --brand-ink: #123a9e;
  --text: #1a2333;
  --muted: #5c6679;
  --muted-light: #93a0b8;
  --warn: #f0a53a;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-sm: 0 1px 2px rgba(11, 18, 32, 0.04), 0 8px 24px -16px rgba(11, 18, 32, 0.18);
  --shadow-md: 0 24px 60px -30px rgba(11, 18, 32, 0.32);
  --maxw: 1180px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --font: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Segoe UI", system-ui,
    -apple-system, sans-serif;
  --mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--paper);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

h1, h2, h3, h4 {
  margin: 0;
  line-height: 1.28;
  letter-spacing: -0.012em;
  font-weight: 700;
}

p { margin: 0; }

::selection { background: rgba(42, 91, 255, 0.16); }

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 92px 0; }
section[id] { scroll-margin-top: 88px; }
.section--tight { padding: 64px 0; }
.section--soft { background: var(--bg); }
.section--ink {
  background:
    radial-gradient(900px 420px at 12% -10%, rgba(42, 91, 255, 0.28), transparent 60%),
    radial-gradient(700px 380px at 88% 0%, rgba(10, 168, 167, 0.16), transparent 62%),
    var(--ink);
  color: #fff;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--brand);
  font-weight: 600;
  margin-bottom: 18px;
}
.eyebrow::before {
  content: "";
  width: 18px;
  height: 2px;
  background: var(--brand);
  border-radius: 2px;
}
.section--ink .eyebrow { color: #8fb0ff; }
.section--ink .eyebrow::before { background: #8fb0ff; }

.display {
  font-size: clamp(2rem, 4.2vw, 3.2rem);
  letter-spacing: -0.028em;
  line-height: 1.22;
}

.section-head { max-width: 720px; margin-bottom: 52px; }
.section-head--center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head--center .eyebrow::before { display: none; }

.lead {
  margin-top: 18px;
  color: var(--muted);
  font-size: 16.5px;
  line-height: 1.85;
}
.section--ink .lead { color: rgba(255, 255, 255, 0.72); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 50px;
  padding: 0 26px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease),
    background 0.25s var(--ease), color 0.25s var(--ease);
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: linear-gradient(135deg, #2a5bff, #1740d1);
  color: #fff;
  box-shadow: 0 14px 32px -14px rgba(42, 91, 255, 0.7);
}
.btn--primary:hover { box-shadow: 0 18px 40px -14px rgba(42, 91, 255, 0.8); }

.btn--ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--text);
}
.btn--ghost:hover { border-color: var(--brand); color: var(--brand); }

.btn--light {
  background: #fff;
  color: var(--ink);
  box-shadow: 0 14px 30px -18px rgba(0, 0, 0, 0.5);
}
.btn--outline-light {
  border-color: rgba(255, 255, 255, 0.28);
  color: #fff;
  background: transparent;
}
.btn--outline-light:hover { background: rgba(255, 255, 255, 0.08); }
.btn--sm { height: 40px; padding: 0 18px; font-size: 13.5px; }

.btn-row { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }

/* ---------- 顶栏 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.site-header.is-scrolled {
  border-bottom-color: var(--line);
  box-shadow: 0 10px 30px -24px rgba(11, 18, 32, 0.5);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 74px;
}

.brand { display: flex; align-items: center; gap: 11px; font-weight: 700; flex: none; }
.brand__mark {
  width: 36px; height: 36px;
  border-radius: 11px;
  display: grid; place-items: center;
  flex: none;
  background: linear-gradient(140deg, #2a5bff, #0aa8a7);
  box-shadow: 0 8px 20px -10px rgba(42, 91, 255, 0.8);
}
.brand__name { font-size: 17px; letter-spacing: -0.01em; white-space: nowrap; }
.brand__sub {
  display: block; font-size: 11px; font-weight: 500; white-space: nowrap;
  color: var(--muted-light); letter-spacing: 0.14em; text-transform: uppercase;
}

.nav__links { display: flex; align-items: center; gap: 4px; flex-wrap: nowrap; }
.nav__links a {
  padding: 9px 12px;
  border-radius: 9px;
  font-size: 14px;
  color: var(--muted);
  transition: color 0.2s, background 0.2s;
  font-weight: 500;
  white-space: nowrap;
  flex: 0 0 auto;
}
.nav__links a:hover { color: var(--text); background: var(--bg-soft); }
.nav__links a.is-active { color: var(--brand); font-weight: 600; }
.nav__cta { display: flex; align-items: center; gap: 12px; }
.nav__phone { font-size: 14px; color: var(--muted); font-family: var(--mono); }

.nav-toggle {
  display: none;
  width: 42px; height: 42px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #fff;
  cursor: pointer;
  padding: 0;
}
.nav-toggle span {
  display: block; width: 18px; height: 1.5px;
  margin: 4px auto; background: var(--text); border-radius: 2px;
  transition: transform 0.25s var(--ease), opacity 0.2s;
}
.nav-toggle.is-open span:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-5.5px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding: 76px 0 96px;
  background:
    radial-gradient(760px 460px at 8% 0%, rgba(42, 91, 255, 0.10), transparent 62%),
    radial-gradient(680px 420px at 92% 12%, rgba(10, 168, 167, 0.10), transparent 60%),
    linear-gradient(180deg, #fbfcff 0%, #f6f8fc 100%);
}
.hero::after {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(to right, rgba(11, 18, 32, 0.045) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(11, 18, 32, 0.045) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(70% 60% at 50% 30%, #000 20%, transparent 78%);
  pointer-events: none;
}
.hero > .container { position: relative; z-index: 2; }

.hero__grid {
  display: grid;
  grid-template-columns: 1.06fr 0.94fr;
  gap: 56px;
  align-items: center;
}

.hero h1 {
  font-size: clamp(2.1rem, 4.5vw, 3.35rem);
  letter-spacing: -0.032em;
  line-height: 1.2;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(100deg, #2a5bff 10%, #0aa8a7 90%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero__desc {
  margin-top: 22px;
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--muted);
  max-width: 560px;
}

.hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 30px;
}
.fact {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--line);
  font-size: 13px;
  color: var(--muted);
}
.fact b { color: var(--text); font-weight: 600; }
.fact i {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--brand-2); font-style: normal;
}

/* ---------- 控制台预览 ---------- */
.dash {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transform: perspective(1200px) rotateY(-3deg) rotateX(2deg);
}
.dash__bar {
  display: flex; align-items: center; gap: 8px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, #fcfdff, #f5f8fd);
}
.dash__dots { display: flex; gap: 6px; }
.dash__dots i { width: 8px; height: 8px; border-radius: 50%; background: #dbe2f0; }
.dash__dots i:first-child { background: #ff5f57; opacity: 0.7; }
.dash__dots i:nth-child(2) { background: #febc2e; opacity: 0.7; }
.dash__dots i:nth-child(3) { background: #28c840; opacity: 0.7; }
.dash__title { font-size: 12px; color: var(--muted-light); letter-spacing: 0.06em; margin-left: 6px; }
.dash__live {
  margin-left: auto; display: inline-flex; align-items: center; gap: 6px;
  font-size: 11px; color: #0a8f74; background: rgba(10, 168, 167, 0.1);
  padding: 3px 10px; border-radius: 999px; font-weight: 600;
}
.dash__live i { width: 5px; height: 5px; border-radius: 50%; background: #0aa8a7; animation: pulse 1.8s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.25; } }

.dash__body { padding: 20px 20px 24px; }
.dash__tabs { display: flex; gap: 6px; margin-bottom: 18px; flex-wrap: wrap; }
.dash__tab {
  font-size: 12px; padding: 5px 12px; border-radius: 8px;
  background: var(--bg-soft); color: var(--muted);
}
.dash__tab.is-on { background: var(--ink); color: #fff; font-weight: 600; }

.dash__metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 20px; }
.metric {
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: linear-gradient(180deg, #fdfefe, #f7f9fd);
}
.metric span { font-size: 11px; color: var(--muted-light); letter-spacing: 0.04em; }
.metric strong {
  display: block; font-size: 21px; font-weight: 700;
  letter-spacing: -0.02em; margin-top: 3px; font-variant-numeric: tabular-nums;
}
.metric strong.up { color: #0a8f74; }
.metric strong i { font-size: 11px; font-style: normal; font-weight: 600; margin-left: 4px; }

.dash__chart { position: relative; height: 108px; margin-bottom: 18px; }
.dash__chart svg { width: 100%; height: 100%; }

.dash__rows { display: grid; gap: 8px; }
.drow {
  display: grid;
  grid-template-columns: 1fr 62px 58px;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: 10px;
  background: #fbfcfe;
  border: 1px solid #eef1f7;
  font-size: 12.5px;
}
.drow__kw { color: var(--text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.drow__pos { font-family: var(--mono); font-size: 12px; color: var(--muted); text-align: right; }
.drow__tag { font-size: 11px; text-align: right; font-weight: 600; }
.drow__tag.up { color: #0a8f74; }
.drow__tag.new { color: var(--brand); }

/* ---------- 引擎条 ---------- */
.engine-strip {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: #fff;
  padding: 26px 0;
}
.engine-strip__inner {
  display: flex; align-items: center; gap: 34px; flex-wrap: wrap; justify-content: center;
}
.engine-strip__label {
  font-size: 12px; letter-spacing: 0.14em; color: var(--muted-light);
  text-transform: uppercase; font-weight: 600;
}
.engine-badge {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13.5px; color: var(--muted); font-weight: 500;
}
.engine-badge b {
  width: 26px; height: 26px; border-radius: 7px;
  display: grid; place-items: center;
  font-size: 11px; font-weight: 700; color: #fff;
  letter-spacing: 0;
}

/* ---------- 卡片 ---------- */
.grid { display: grid; gap: 22px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

.card {
  position: relative;
  padding: 30px 28px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s;
  display: flex;
  flex-direction: column;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-sm);
  border-color: #d5deef;
}
.card__icon {
  width: 46px; height: 46px; border-radius: 13px;
  display: grid; place-items: center;
  background: linear-gradient(145deg, rgba(42, 91, 255, 0.1), rgba(10, 168, 167, 0.1));
  margin-bottom: 22px;
  color: var(--brand);
}
.card h3 { font-size: 18.5px; margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 14.5px; line-height: 1.8; }
.card__list { margin: 18px 0 0; padding: 0; list-style: none; display: grid; gap: 9px; }
.card__list li {
  position: relative; padding-left: 20px; font-size: 13.5px; color: var(--muted);
}
.card__list li::before {
  content: ""; position: absolute; left: 0; top: 9px;
  width: 7px; height: 7px; border-radius: 2px;
  background: rgba(42, 91, 255, 0.22);
  border: 1px solid rgba(42, 91, 255, 0.35);
}
.card__more {
  margin-top: auto; padding-top: 22px;
  font-size: 13.5px; font-weight: 600; color: var(--brand);
  display: inline-flex; align-items: center; gap: 6px;
}
.card__more::after { content: "→"; transition: transform 0.25s var(--ease); }
.card:hover .card__more::after { transform: translateX(4px); }

/* ---------- 案例 ---------- */
.case {
  display: flex;
  flex-direction: column;
  padding: 26px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s;
}
.case:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-sm);
  border-color: #d5deef;
}
.case__top {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; margin-bottom: 18px;
}
.case__tag {
  font-size: 11.5px; font-weight: 600; color: var(--brand);
  background: rgba(42, 91, 255, 0.08);
  padding: 4px 11px; border-radius: 999px;
}
.case__period {
  font-size: 11.5px; color: var(--muted-light);
  font-family: var(--mono);
}
.case__kw { font-size: 17px; font-weight: 700; letter-spacing: -0.01em; line-height: 1.45; }
.case__prefix {
  margin-top: 6px; margin-bottom: 18px;
  font-size: 12.5px; color: var(--muted-light);
}
.case__metrics {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px;
  background: var(--line);
  border-radius: 10px; overflow: hidden;
  margin-bottom: 16px;
}
.case__metric {
  background: #fafbfe; padding: 12px 10px; text-align: center;
}
.case__metric b {
  display: block; font-size: 18px; font-weight: 700;
  color: var(--text); font-variant-numeric: tabular-nums; letter-spacing: -0.02em;
}
.case__metric b.is-up { color: #0a8f74; }
.case__metric span { display: block; margin-top: 3px; font-size: 11px; color: var(--muted-light); }
.case__desc { font-size: 13px; color: var(--muted); line-height: 1.85; }
.case__desc strong { color: var(--text); }

.case-note {
  margin-top: 22px; max-width: 920px;
  font-size: 12.5px; color: var(--muted-light); line-height: 1.85;
}

/* ---------- 数据条 ---------- */
.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line-dark); border-radius: var(--radius); overflow: hidden; }
.stat {
  background: rgba(255, 255, 255, 0.03);
  padding: 30px 26px;
  backdrop-filter: blur(4px);
}
.stat b { display: block; font-size: 30px; letter-spacing: -0.03em; font-weight: 700; }
.stat b span { font-size: 15px; font-weight: 600; margin-left: 3px; opacity: 0.7; }
.stat p { margin-top: 8px; font-size: 13px; color: rgba(255, 255, 255, 0.6); }

/* ---------- 表格 ---------- */
.table-wrap {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow-sm);
}
table.data { width: 100%; border-collapse: collapse; font-size: 14.5px; }
table.data th {
  text-align: left; padding: 16px 22px;
  background: #f8fafd; font-size: 12.5px; font-weight: 600;
  color: var(--muted); letter-spacing: 0.06em; text-transform: uppercase;
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}
table.data td {
  padding: 16px 22px; border-bottom: 1px solid #f1f4f9; color: var(--muted);
  vertical-align: middle;
}
table.data tr:last-child td { border-bottom: 0; }
table.data td:first-child { color: var(--text); font-weight: 600; }
mark {
  background: rgba(42, 91, 255, 0.1); color: var(--brand);
  padding: 2px 8px; border-radius: 6px; font-size: 12.5px; font-weight: 600;
  white-space: nowrap;
}
mark.green { background: rgba(10, 168, 167, 0.12); color: #067a6f; }
mark.grey { background: #eef1f7; color: var(--muted); }

/* ---------- 流程 ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; counter-reset: step; }
.step {
  position: relative;
  padding: 28px 24px 26px;
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid var(--line);
}
.step::before {
  counter-increment: step;
  content: "0" counter(step);
  display: block;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--brand);
  letter-spacing: 0.1em;
  margin-bottom: 14px;
  font-weight: 600;
}
.step h4 { font-size: 16px; margin-bottom: 8px; }
.step p { font-size: 13.5px; color: var(--muted); line-height: 1.75; }

/* ---------- 富文本 ---------- */
.prose { max-width: 820px; }
.prose h2 {
  font-size: clamp(1.5rem, 2.4vw, 1.95rem);
  margin: 56px 0 18px;
  letter-spacing: -0.02em;
}
.prose h2:first-child { margin-top: 0; }
.prose h3 { font-size: 18px; margin: 34px 0 12px; }
.prose p { color: var(--muted); margin: 14px 0; font-size: 15.5px; line-height: 1.9; }
.prose strong { color: var(--text); font-weight: 600; }
.prose ul, .prose ol { color: var(--muted); padding-left: 20px; margin: 16px 0; }
.prose li { margin: 9px 0; line-height: 1.8; }
.prose a { color: var(--brand); border-bottom: 1px solid rgba(42, 91, 255, 0.3); }

.answer-box {
  border-left: 3px solid var(--brand);
  background: linear-gradient(90deg, rgba(42, 91, 255, 0.055), transparent 90%);
  padding: 22px 26px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 0 0 10px;
}
.answer-box p { margin: 0; color: var(--text); font-size: 15.5px; line-height: 1.85; }
.answer-box__tag {
  display: inline-block; font-size: 11px; letter-spacing: 0.12em;
  color: var(--brand); font-weight: 700; margin-bottom: 8px; text-transform: uppercase;
}

/* ---------- FAQ ---------- */
.faq { display: grid; gap: 12px; max-width: 900px; margin: 0 auto; }
.faq__item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: border-color 0.25s, box-shadow 0.25s;
}
.faq__item[open] { border-color: #cfdbf0; box-shadow: var(--shadow-sm); }
.faq__item summary {
  list-style: none;
  cursor: pointer;
  padding: 19px 56px 19px 24px;
  font-size: 15.5px;
  font-weight: 600;
  position: relative;
  color: var(--text);
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after {
  content: "";
  position: absolute; right: 24px; top: 50%;
  width: 11px; height: 11px;
  border-right: 1.5px solid var(--muted-light);
  border-bottom: 1.5px solid var(--muted-light);
  transform: translateY(-70%) rotate(45deg);
  transition: transform 0.3s var(--ease);
}
.faq__item[open] summary::after { transform: translateY(-30%) rotate(-135deg); }
.faq__body { padding: 0 24px 22px; color: var(--muted); font-size: 14.5px; line-height: 1.9; }

/* ---------- 信息栏 ---------- */
.cta-band {
  position: relative;
  overflow: hidden;
  border-radius: 24px;
  padding: 56px 52px;
  background:
    radial-gradient(600px 300px at 15% 0%, rgba(42, 91, 255, 0.35), transparent 60%),
    radial-gradient(500px 260px at 85% 100%, rgba(10, 168, 167, 0.22), transparent 60%),
    var(--ink);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}
.cta-band h2 { font-size: clamp(1.5rem, 2.6vw, 2.05rem); letter-spacing: -0.02em; }
.cta-band p { color: rgba(255, 255, 255, 0.7); margin-top: 12px; font-size: 15px; max-width: 560px; }
.cta-band__actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* ---------- 联系 ---------- */
.contact-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 56px; align-items: start; }
.wechat-card {
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: #fff;
  padding: 30px;
  box-shadow: var(--shadow-sm);
}
.wechat-id {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  margin-top: 16px; padding: 15px 18px;
  border-radius: 12px;
  background: #f7f9fd;
  border: 1px dashed #d3ddf0;
}
.wechat-id span { font-family: var(--mono); font-size: 16px; font-weight: 600; letter-spacing: 0.02em; }
.wechat-id button {
  border: 1px solid var(--line); background: #fff;
  border-radius: 8px; height: 34px; padding: 0 14px;
  font-size: 12.5px; color: var(--muted); cursor: pointer;
  transition: all 0.2s;
}
.wechat-id button:hover { color: var(--brand); border-color: var(--brand); }

.form { display: grid; gap: 16px; }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { display: grid; gap: 8px; }
.field label { font-size: 13px; color: var(--muted); font-weight: 500; }
.field input, .field select, .field textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px 14px;
  font-family: var(--font);
  font-size: 14px;
  color: var(--text);
  background: #fff;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: #a9c0fb;
  box-shadow: 0 0 0 3px rgba(42, 91, 255, 0.1);
}
.field textarea { resize: vertical; min-height: 92px; }
.form__note { font-size: 12.5px; color: var(--muted-light); line-height: 1.7; }
.form__result {
  display: none;
  margin-top: 6px;
  padding: 16px 18px;
  border-radius: 12px;
  background: rgba(10, 168, 167, 0.08);
  border: 1px solid rgba(10, 168, 167, 0.28);
  font-size: 13.5px;
  color: #067a6f;
  line-height: 1.8;
}
.form__result.is-on { display: block; }

.info-list { display: grid; gap: 18px; margin-top: 26px; }
.info-list div {
  display: flex; gap: 14px; align-items: flex-start;
  font-size: 14px; color: var(--muted);
}
.info-list b { color: var(--text); display: block; font-size: 13.5px; margin-bottom: 2px; }
.info-list i {
  width: 34px; height: 34px; flex: none; border-radius: 9px;
  background: var(--bg-soft); display: grid; place-items: center;
  color: var(--brand); font-style: normal; font-size: 13px;
}

/* ---------- 子页头 ---------- */
.page-hero {
  padding: 62px 0 66px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(700px 320px at 10% 0%, rgba(42, 91, 255, 0.08), transparent 60%),
    linear-gradient(180deg, #fbfcff, #fff);
}
.crumbs { display: flex; align-items: center; gap: 8px; font-size: 12.5px; color: var(--muted-light); margin-bottom: 22px; }
.crumbs a:hover { color: var(--brand); }
.crumbs span { color: #cbd4e4; }
.page-hero h1 {
  font-size: clamp(1.85rem, 3.4vw, 2.7rem);
  letter-spacing: -0.028em;
  line-height: 1.25;
  max-width: 860px;
}
.page-hero .lead { max-width: 720px; font-size: 16px; }

.pill-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 26px; }
.pill {
  padding: 6px 13px; border-radius: 999px; font-size: 12.5px;
  background: #fff; border: 1px solid var(--line); color: var(--muted);
}

/* ---------- 双栏特性 ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.feature-list { display: grid; gap: 24px; margin-top: 28px; }
.feature {
  display: flex; gap: 16px;
}
.feature__dot {
  width: 30px; height: 30px; border-radius: 9px; flex: none;
  display: grid; place-items: center;
  background: rgba(42, 91, 255, 0.09);
  color: var(--brand);
  font-size: 12px; font-weight: 700;
}
.feature h4 { font-size: 15.5px; margin-bottom: 5px; }
.feature p { font-size: 14px; color: var(--muted); line-height: 1.8; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--ink); color: rgba(255, 255, 255, 0.62); padding: 64px 0 28px; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 44px;
  border-bottom: 1px solid var(--line-dark);
}
.site-footer .brand__name { color: #fff; }
.site-footer .brand__sub { color: rgba(255, 255, 255, 0.42); }
.footer-about { font-size: 13.5px; line-height: 1.85; margin-top: 18px; max-width: 320px; }
.footer-col h5 {
  font-size: 12.5px; letter-spacing: 0.12em; text-transform: uppercase;
  color: rgba(255, 255, 255, 0.4); margin: 0 0 16px; font-weight: 600;
}
.footer-col a { display: block; font-size: 13.5px; padding: 5px 0; color: rgba(255, 255, 255, 0.62); transition: color 0.2s; }
.footer-col a:hover { color: #fff; }
.footer-bottom {
  display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap;
  padding-top: 24px; font-size: 12.5px; color: rgba(255, 255, 255, 0.38);
}
.footer-bottom .wx { font-family: var(--mono); color: rgba(255, 255, 255, 0.6); }

/* ---------- 动效 ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1200px) {
  .nav__phone { display: none; }
}
@media (max-width: 1100px) {
  .brand__sub { display: none; }
}
@media (max-width: 1040px) {
  .nav__links, .nav__cta .btn { display: none; }
  .nav-toggle { display: block; }
  .nav__links.is-open {
    display: flex; flex-direction: column; align-items: stretch;
    position: absolute; top: 74px; left: 16px; right: 16px;
    background: #fff; border: 1px solid var(--line); border-radius: 14px;
    padding: 12px; gap: 2px;
    box-shadow: var(--shadow-md);
  }
  .nav__links.is-open a { padding: 12px 14px; }
}
@media (max-width: 1024px) {
  .hero__grid { grid-template-columns: 1fr; gap: 44px; }
  .dash { transform: none; max-width: 620px; }
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .stat-row { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; gap: 40px; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 860px) {
  .section { padding: 68px 0; }
  .grid--3, .grid--2 { grid-template-columns: 1fr; }
  .hero { padding: 52px 0 68px; }
  .cta-band { padding: 38px 28px; border-radius: 18px; }
  .prose h2 { margin-top: 42px; }
  table.data { font-size: 13px; }
  table.data th, table.data td { padding: 13px 14px; }
  .table-wrap { overflow-x: auto; }
  table.data { min-width: 640px; }
}
@media (max-width: 560px) {
  .container { padding: 0 18px; }
  .grid--4 { grid-template-columns: 1fr; }
  .stat-row { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .form__row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .dash__metrics { grid-template-columns: 1fr; }
  .hero__facts { gap: 8px; }
  .fact { font-size: 12px; padding: 6px 11px; }
}