/* ========================================================================
   香兰报销 · 差旅费控 SaaS 平台 — 官网样式
   纯静态 / 无依赖 / 响应式
   ======================================================================== */

/* ---------- 设计令牌 ---------- */
:root {
  /* 主色：商务蓝（信任、专业） */
  --c-primary: #2563eb;
  --c-primary-dark: #1d4ed8;
  --c-primary-light: #3b82f6;
  --c-accent: #0ea5e9;       /* 天空蓝（活力、出行） */
  --c-green: #10b981;        /* 成功 / 省钱 */
  --c-green-dark: #059669;
  --c-purple: #8b5cf6;
  --c-orange: #f59e0b;

  /* 文本 */
  --c-text: #0f172a;
  --c-text-soft: #475569;
  --c-text-mute: #94a3b8;

  /* 背景 */
  --c-bg: #ffffff;
  --c-bg-soft: #f8fafc;
  --c-bg-mute: #f1f5f9;
  --c-border: #e2e8f0;

  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, .06);
  --shadow: 0 6px 24px rgba(15, 23, 42, .08);
  --shadow-lg: 0 24px 60px rgba(15, 23, 42, .14);
  --shadow-blue: 0 16px 40px rgba(37, 99, 235, .28);

  /* 圆角 */
  --r-sm: 8px;
  --r: 14px;
  --r-lg: 22px;
  --r-pill: 999px;

  /* 布局 */
  --container: 1200px;
  --container-narrow: 820px;

  /* 字体 */
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
          "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica,
          Arial, sans-serif;
}

/* ---------- 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  color: var(--c-text);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; list-style: none; }
button { font-family: inherit; cursor: pointer; border: 0; background: none; }
h1, h2, h3, h4, h5 { margin: 0; line-height: 1.25; font-weight: 700; }
p { margin: 0; }

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

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: var(--r-pill);
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  white-space: nowrap;
  transition: transform .15s ease, box-shadow .2s ease, background .2s ease, color .2s ease;
  cursor: pointer;
}
.btn--sm { padding: 9px 16px; font-size: 14px; }
.btn--lg { padding: 16px 30px; font-size: 16px; }
.btn--primary {
  background: var(--c-primary);
  color: #fff;
  box-shadow: var(--shadow-blue);
}
.btn--primary:hover {
  background: var(--c-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 20px 48px rgba(37, 99, 235, .36);
}
.btn--ghost {
  background: rgba(37, 99, 235, .06);
  color: var(--c-primary);
}
.btn--ghost:hover { background: rgba(37, 99, 235, .12); }
.btn--white {
  background: #fff;
  color: var(--c-primary);
  box-shadow: var(--shadow);
}
.btn--white:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.btn--ghost-white {
  background: rgba(255, 255, 255, .12);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, .35);
}
.btn--ghost-white:hover { background: rgba(255, 255, 255, .22); }

/* ---------- 通用：标签 / 渐变文字 ---------- */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--r-pill);
  font-size: 13px;
  font-weight: 600;
  background: rgba(37, 99, 235, .08);
  color: var(--c-primary);
}
.pill--light { background: rgba(255, 255, 255, .85); color: var(--c-primary); backdrop-filter: blur(8px); }

.grad-text {
  background: linear-gradient(100deg, var(--c-primary), var(--c-accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.chip {
  display: inline-flex;
  align-items: center;
  padding: 5px 12px;
  border-radius: var(--r-pill);
  background: rgba(255, 255, 255, .7);
  border: 1px solid var(--c-border);
  font-size: 13px;
  font-weight: 500;
  color: var(--c-text-soft);
}

/* ---------- 顶部公告条 ---------- */
.topbar {
  background: linear-gradient(90deg, var(--c-primary-dark), var(--c-primary));
  color: #fff;
  font-size: 13px;
}
.topbar__inner {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-top: 9px;
  padding-bottom: 9px;
}
.topbar__badge {
  background: rgba(255, 255, 255, .22);
  padding: 1px 8px;
  border-radius: var(--r-sm);
  font-weight: 700;
  font-size: 12px;
}
.topbar__text { opacity: .95; }

/* ---------- 导航 ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .85);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s, box-shadow .2s, background .2s;
}
.nav.is-scrolled {
  border-bottom-color: var(--c-border);
  box-shadow: var(--shadow-sm);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 20px;
}

.brand { display: inline-flex; align-items: center; gap: 10px; }
.brand__name { display: flex; flex-direction: column; line-height: 1.1; }
.brand__name strong { font-size: 17px; font-weight: 800; color: var(--c-text); letter-spacing: .5px; }
.brand__name small { font-size: 11px; color: var(--c-text-mute); font-weight: 600; }
.brand--light .brand__name strong { color: #fff; }
.brand--light .brand__name small { color: rgba(255,255,255,.7); }

.nav__links { display: flex; gap: 28px; }
.nav__links a {
  font-size: 15px;
  font-weight: 500;
  color: var(--c-text-soft);
  position: relative;
  padding: 6px 0;
  transition: color .2s;
}
.nav__links a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  background: var(--c-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .2s;
}
.nav__links a:hover { color: var(--c-primary); }
.nav__links a:hover::after { transform: scaleX(1); }

.nav__actions { display: flex; align-items: center; gap: 10px; }

.nav__toggle {
  display: none;
  width: 40px; height: 40px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  border-radius: var(--r-sm);
}
.nav__toggle span {
  width: 22px; height: 2px;
  background: var(--c-text);
  border-radius: 2px;
  transition: transform .25s, opacity .25s;
}
.nav__toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle.is-open span:nth-child(2) { opacity: 0; }
.nav__toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav__drawer {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 24px 24px;
  border-top: 1px solid var(--c-border);
  background: var(--c-bg);
}
/* hidden 属性必须生效（否则上面的 display:flex 会覆盖它，导致抽屉常显挡住内容） */
.nav__drawer[hidden] { display: none; }
/* 桌面端永远不显示移动抽屉（桌面用横向 .nav__links） */
@media (min-width: 861px) {
  .nav__drawer { display: none !important; }
}
.nav__drawer a {
  padding: 12px 8px;
  font-size: 16px;
  font-weight: 500;
  color: var(--c-text-soft);
  border-bottom: 1px solid var(--c-bg-mute);
}
.nav__drawer .btn { margin-top: 12px; }

/* ---------- 通用区块 ---------- */
.section { padding: 96px 0; }
.section__head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.kicker {
  display: inline-block;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--c-primary);
  text-transform: uppercase;
  margin-bottom: 14px;
}
.section__head h2 {
  font-size: clamp(28px, 4vw, 40px);
  letter-spacing: -.5px;
  margin-bottom: 16px;
}
.section__head p { color: var(--c-text-soft); font-size: 17px; }

/* ========================================================================
   Hero
   ======================================================================== */
.hero {
  position: relative;
  overflow: hidden;
  padding: 72px 0 88px;
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(14, 165, 233, .14), transparent 60%),
    radial-gradient(900px 500px at 0% 0%, rgba(37, 99, 235, .12), transparent 55%),
    linear-gradient(180deg, #f8fbff, #ffffff);
}
.hero__bg { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }
.hero__blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  opacity: .5;
}
.hero__blob--1 { width: 480px; height: 480px; background: #60a5fa; top: -120px; right: -120px; }
.hero__blob--2 { width: 380px; height: 380px; background: #7dd3fc; bottom: -140px; left: -80px; opacity: .35; }
.hero__grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(37,99,235,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37,99,235,.05) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, #000 30%, transparent 75%);
}

.hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 56px;
  align-items: center;
}
.hero__title {
  font-size: clamp(34px, 5vw, 54px);
  line-height: 1.15;
  letter-spacing: -1px;
  margin: 18px 0 22px;
}
.hero__desc {
  font-size: 18px;
  color: var(--c-text-soft);
  max-width: 540px;
  margin-bottom: 32px;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 40px; }
.hero__trust { display: flex; flex-direction: column; gap: 12px; }
.hero__trust > span { font-size: 13px; color: var(--c-text-mute); font-weight: 600; }
.hero__logos { display: flex; flex-wrap: wrap; gap: 8px; }

/* Hero mockup 卡片 */
.hero__card { perspective: 1200px; }
.mockup {
  background: #fff;
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--c-border);
  overflow: hidden;
  transform: rotate(-1deg);
  transition: transform .4s ease;
}
.hero__card:hover .mockup { transform: rotate(0deg) translateY(-4px); }
.mockup__bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 14px 18px;
  background: var(--c-bg-soft);
  border-bottom: 1px solid var(--c-border);
}
.mockup__bar span { width: 11px; height: 11px; border-radius: 50%; background: #cbd5e1; }
.mockup__bar span:nth-child(1) { background: #ef4444; }
.mockup__bar span:nth-child(2) { background: #f59e0b; }
.mockup__bar span:nth-child(3) { background: #10b981; }
.mockup__bar em { margin-left: 12px; font-size: 13px; font-style: normal; color: var(--c-text-mute); font-weight: 500; }

.mockup__body { padding: 20px; display: flex; flex-direction: column; gap: 18px; }
.mockup__row { display: flex; align-items: center; gap: 12px; }
.mockup__avatar {
  width: 40px; height: 40px; flex: none;
  border-radius: 50%;
  background: linear-gradient(135deg, #2563eb, #0ea5e9);
  color: #fff; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.mockup__meta { flex: 1; }
.mockup__meta strong { display: block; font-size: 15px; }
.mockup__meta span { font-size: 12px; color: var(--c-text-mute); }
.tag {
  font-size: 12px; font-weight: 700;
  padding: 4px 10px; border-radius: var(--r-pill);
}
.tag--green { background: rgba(16, 185, 129, .12); color: var(--c-green-dark); }

.mockup__compare {
  background: var(--c-bg-soft);
  border-radius: var(--r);
  padding: 14px;
}
.mockup__compare-head { font-size: 12px; font-weight: 700; color: var(--c-text-mute); margin-bottom: 10px; letter-spacing: .5px; }
.mockup__vendor {
  display: flex; justify-content: space-between; align-items: center;
  padding: 8px 10px; margin-bottom: 6px;
  background: #fff; border-radius: var(--r-sm);
  font-size: 14px;
}
.mockup__vendor b { font-size: 15px; }
.mockup__vendor.is-best {
  background: linear-gradient(90deg, rgba(16,185,129,.12), rgba(16,185,129,.04));
  border: 1px solid rgba(16,185,129,.3);
}
.mockup__vendor.is-best b { color: var(--c-green-dark); }
.mockup__vendor i {
  font-style: normal; font-size: 11px; font-weight: 700;
  background: var(--c-green); color: #fff;
  padding: 1px 7px; border-radius: var(--r-pill); margin-left: 6px;
}
.mockup__save {
  margin-top: 10px;
  font-size: 13px; color: var(--c-text-soft);
  padding: 8px 10px;
  background: rgba(16,185,129,.08);
  border-radius: var(--r-sm);
  text-align: center;
}
.mockup__save strong { color: var(--c-green-dark); }

.mockup__pay { display: flex; flex-direction: column; gap: 10px; }
.mockup__pay-bar { display: grid; grid-template-columns: 90px 1fr auto; gap: 10px; align-items: center; font-size: 13px; }
.mockup__pay-bar span { color: var(--c-text-soft); }
.bar { height: 8px; background: var(--c-bg-mute); border-radius: var(--r-pill); overflow: hidden; }
.bar i { display: block; height: 100%; background: var(--c-primary); border-radius: var(--r-pill); }
.bar--alt i { background: var(--c-orange); }
.mockup__pay-bar b { font-size: 13px; }

/* Hero 信任指标 */
.stats {
  margin-top: 72px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 32px;
  background: #fff;
  border-radius: var(--r-lg);
  border: 1px solid var(--c-border);
  box-shadow: var(--shadow);
}
.stat { text-align: center; }
.stat__num {
  font-size: 40px;
  font-weight: 800;
  color: var(--c-primary);
  letter-spacing: -1px;
  line-height: 1;
}
.stat__num i { font-size: 18px; font-style: normal; margin-left: 2px; color: var(--c-text-soft); }
.stat__label { margin-top: 8px; font-size: 14px; color: var(--c-text-soft); }

/* ========================================================================
   痛点
   ======================================================================== */
.pain { background: var(--c-bg-soft); }
.pain__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.pain__card {
  background: #fff;
  border-radius: var(--r-lg);
  padding: 32px 26px;
  border: 1px solid var(--c-border);
  transition: transform .2s, box-shadow .2s;
}
.pain__card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.pain__icon { font-size: 38px; margin-bottom: 14px; }
.pain__card h3 { font-size: 19px; margin-bottom: 10px; }
.pain__card p { color: var(--c-text-soft); font-size: 15px; }

/* ========================================================================
   产品矩阵
   ======================================================================== */
.products__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
}
.product {
  position: relative;
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  padding: 36px 30px;
  transition: transform .2s, box-shadow .2s, border-color .2s;
}
.product:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.product--featured {
  border-color: var(--c-primary);
  box-shadow: var(--shadow-blue);
  background: linear-gradient(180deg, #fff, #f6f9ff);
}
.product__icon {
  width: 64px; height: 64px;
  border-radius: var(--r);
  display: flex; align-items: center; justify-content: center;
  font-size: 32px;
  margin-bottom: 20px;
}
.product__icon--blue { background: rgba(37,99,235,.12); }
.product__icon--green { background: rgba(16,185,129,.12); }
.product__icon--purple { background: rgba(139,92,246,.12); }
.product h3 { font-size: 22px; margin-bottom: 6px; }
.product__tag { color: var(--c-text-mute); font-size: 14px; margin-bottom: 20px; font-weight: 500; }
.product ul { display: flex; flex-direction: column; gap: 12px; }
.product li {
  position: relative;
  padding-left: 26px;
  color: var(--c-text-soft);
  font-size: 15px;
}
.product li::before {
  content: "✓";
  position: absolute;
  left: 0; top: 0;
  width: 18px; height: 18px;
  background: rgba(16,185,129,.15);
  color: var(--c-green-dark);
  border-radius: 50%;
  font-size: 11px;
  font-weight: 800;
  display: flex; align-items: center; justify-content: center;
}
.product__ribbon {
  position: absolute;
  top: 18px; right: 18px;
  background: var(--c-primary);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: var(--r-pill);
}

/* ========================================================================
   核心优势
   ======================================================================== */
.advantages { background: var(--c-bg-soft); }
.adv__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.adv {
  position: relative;
  background: #fff;
  border-radius: var(--r-lg);
  padding: 32px 28px;
  border: 1px solid var(--c-border);
  overflow: hidden;
  transition: transform .2s, box-shadow .2s;
}
.adv:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.adv__num {
  position: absolute;
  top: 18px; right: 24px;
  font-size: 44px;
  font-weight: 900;
  color: var(--c-bg-mute);
  line-height: 1;
  letter-spacing: -2px;
}
.adv__icon { font-size: 34px; margin-bottom: 12px; }
.adv h3 { font-size: 19px; margin-bottom: 10px; }
.adv p { color: var(--c-text-soft); font-size: 15px; }

/* ========================================================================
   业务流程时间线
   ======================================================================== */
.flow__timeline {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 14px;
  position: relative;
}
.flow__timeline::before {
  content: "";
  position: absolute;
  top: 22px;
  left: 7%;
  right: 7%;
  height: 2px;
  background: repeating-linear-gradient(90deg, var(--c-primary) 0 8px, transparent 8px 16px);
  z-index: 0;
}
.flow__item { position: relative; z-index: 1; text-align: center; }
.flow__dot {
  width: 46px; height: 46px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--c-primary);
  color: var(--c-primary);
  font-weight: 800;
  font-size: 18px;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 12px rgba(37,99,235,.18);
  transition: transform .2s, background .2s, color .2s;
}
.flow__item:hover .flow__dot { background: var(--c-primary); color: #fff; transform: scale(1.08); }
.flow__card {
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--r);
  padding: 18px 16px;
  text-align: left;
  height: 100%;
  transition: box-shadow .2s, transform .2s;
}
.flow__item:hover .flow__card { box-shadow: var(--shadow); transform: translateY(-2px); }
.flow__card h4 { font-size: 16px; margin-bottom: 8px; color: var(--c-text); }
.flow__card p { font-size: 13px; color: var(--c-text-soft); line-height: 1.55; }

/* ========================================================================
   技术架构
   ======================================================================== */
.tech { background: linear-gradient(180deg, #0b1220, #111c33); color: #cbd5e1; }
.tech .section__head h2 { color: #fff; }
.tech .section__head p { color: #94a3b8; }
.tech .kicker { color: #60a5fa; }

.tech__grid {
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 40px;
  align-items: start;
}
.tech__main {
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--r-lg);
  padding: 28px;
}
.tech__layer {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  border-radius: var(--r);
  margin-bottom: 8px;
}
.tech__layer--1 { background: rgba(96,165,250,.1); }
.tech__layer--2 { background: rgba(16,185,129,.1); }
.tech__layer--3 { background: rgba(139,92,246,.1); }
.tech__layer-tag {
  flex: none;
  width: 56px;
  font-size: 12px;
  font-weight: 700;
  color: #fff;
  text-align: center;
  padding: 6px 0;
  border-radius: var(--r-sm);
  background: rgba(255,255,255,.12);
}
.tech__nodes { flex: 1; display: flex; gap: 10px; }
.tech__node {
  flex: 1;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--r-sm);
  padding: 10px 12px;
  font-size: 13px;
  font-weight: 600;
  color: #e2e8f0;
  text-align: center;
}
.tech__node small { display: block; font-weight: 400; color: #94a3b8; margin-top: 2px; font-size: 11px; }
.tech__node--wide { flex: 1; }
.tech__connector { text-align: center; font-size: 12px; color: #64748b; padding: 4px 0; letter-spacing: 1px; }

.tech__side { display: flex; flex-direction: column; gap: 16px; }
.tech__feature {
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--r);
  padding: 20px 22px;
  display: flex;
  gap: 14px;
  align-items: flex-start;
  transition: background .2s, transform .2s;
}
.tech__feature:hover { background: rgba(255,255,255,.07); transform: translateX(4px); }
.tech__feature-icon { font-size: 26px; flex: none; }
.tech__feature h4 { font-size: 16px; color: #fff; margin-bottom: 6px; }
.tech__feature p { font-size: 14px; color: #94a3b8; line-height: 1.6; }

/* ========================================================================
   对比表
   ======================================================================== */
.compare { background: var(--c-bg-soft); }
.compare__table {
  background: #fff;
  border-radius: var(--r-lg);
  border: 1px solid var(--c-border);
  overflow: hidden;
  box-shadow: var(--shadow);
  max-width: 1000px;
  margin: 0 auto;
}
.compare__row {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1fr;
  align-items: center;
}
.compare__row > div {
  padding: 18px 22px;
  border-bottom: 1px solid var(--c-border);
  font-size: 15px;
}
.compare__row > div:not(:first-child) { text-align: center; }
.compare__row--head { background: var(--c-bg-soft); }
.compare__row--head > div {
  font-weight: 700;
  font-size: 15px;
  border-bottom: 2px solid var(--c-border);
}
.compare__row--head .compare__us { color: var(--c-primary); }
.compare__row .compare__us { background: rgba(37,99,235,.04); font-weight: 600; }
.compare__row:last-child > div { border-bottom: 0; }
.yes {
  display: inline-flex; align-items: center; gap: 4px;
  color: var(--c-green-dark); font-weight: 700;
}
.yes::before { content: "✓"; }
.no { color: #ef4444; }
.no::before { content: "✕ "; }
.muted { color: var(--c-text-mute); }

/* ========================================================================
   目标客户
   ======================================================================== */
.audience__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.audience__card {
  text-align: center;
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  padding: 36px 24px;
  transition: transform .2s, box-shadow .2s;
}
.audience__card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.audience__emoji { font-size: 44px; margin-bottom: 14px; }
.audience__card h3 { font-size: 18px; margin-bottom: 10px; }
.audience__card p { color: var(--c-text-soft); font-size: 14px; }

/* ========================================================================
   定价
   ======================================================================== */
.pricing { background: var(--c-bg-soft); }
.pricing__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}
.price {
  position: relative;
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  padding: 36px 30px;
  display: flex;
  flex-direction: column;
  transition: transform .2s, box-shadow .2s;
}
.price:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.price--featured {
  border-color: var(--c-primary);
  box-shadow: var(--shadow-blue);
  background: linear-gradient(180deg, #fff, #f6f9ff);
}
.price__badge {
  position: absolute;
  top: -13px; left: 50%;
  transform: translateX(-50%);
  background: var(--c-primary);
  color: #fff;
  font-size: 12px; font-weight: 700;
  padding: 5px 16px;
  border-radius: var(--r-pill);
  white-space: nowrap;
}
.price__head { border-bottom: 1px solid var(--c-border); padding-bottom: 22px; margin-bottom: 22px; }
.price__head h3 { font-size: 20px; margin-bottom: 12px; }
.price__amount { display: flex; align-items: baseline; gap: 6px; }
.price__amount strong { font-size: 34px; color: var(--c-primary); font-weight: 800; letter-spacing: -1px; }
.price__amount span { font-size: 14px; color: var(--c-text-mute); }
.price__sub { font-size: 14px; color: var(--c-text-mute); margin-bottom: 20px; }
.price ul { display: flex; flex-direction: column; gap: 12px; flex: 1; }
.price li { font-size: 15px; color: var(--c-text-soft); }
.price__note {
  margin-top: 20px;
  padding: 14px 16px;
  background: rgba(16,185,129,.08);
  border-radius: var(--r);
  font-size: 13px;
  color: var(--c-text-soft);
  line-height: 1.6;
}
.price__note strong { color: var(--c-green-dark); }

/* ========================================================================
   FAQ
   ======================================================================== */
.faq__list { display: flex; flex-direction: column; gap: 14px; }
.faq__item {
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--r);
  padding: 4px 24px;
  transition: box-shadow .2s, border-color .2s;
}
.faq__item[open] { box-shadow: var(--shadow); border-color: rgba(37,99,235,.3); }
.faq__item summary {
  list-style: none;
  cursor: pointer;
  padding: 20px 0;
  font-size: 17px;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after {
  content: "+";
  font-size: 26px;
  font-weight: 300;
  color: var(--c-primary);
  transition: transform .2s;
  flex: none;
}
.faq__item[open] summary::after { content: "−"; }
.faq__a {
  padding: 0 0 22px;
  color: var(--c-text-soft);
  font-size: 15px;
}

/* ========================================================================
   CTA
   ======================================================================== */
.cta { padding: 80px 0 96px; }
.cta__box {
  position: relative;
  overflow: hidden;
  border-radius: var(--r-lg);
  padding: 72px 48px;
  text-align: center;
  color: #fff;
}
.cta__bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(600px 300px at 20% 20%, rgba(14,165,233,.5), transparent 60%),
    radial-gradient(700px 350px at 90% 80%, rgba(139,92,246,.45), transparent 60%),
    linear-gradient(120deg, var(--c-primary-dark), var(--c-primary));
}
.cta__content { position: relative; z-index: 1; }
.cta__content h2 {
  font-size: clamp(26px, 3.6vw, 38px);
  margin-bottom: 14px;
  letter-spacing: -.5px;
}
.cta__content p { font-size: 17px; opacity: .92; margin-bottom: 30px; }
.cta__actions { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; margin-bottom: 26px; }
.cta__contact { display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: center; font-size: 14px; opacity: .85; }

/* ========================================================================
   Footer
   ======================================================================== */
.footer { background: #0b1220; color: #94a3b8; padding: 64px 0 32px; }
.footer__top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.footer__desc { margin-top: 16px; font-size: 14px; line-height: 1.7; max-width: 320px; }
.footer__col h4 { color: #fff; font-size: 15px; margin-bottom: 16px; }
.footer__col a, .footer__col span {
  display: block;
  font-size: 14px;
  color: #94a3b8;
  padding: 6px 0;
  transition: color .2s;
}
.footer__col a:hover { color: #fff; }
.footer__time { color: #64748b !important; }
.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 28px;
  font-size: 13px;
  color: #64748b;
}
.footer__legal { display: flex; gap: 20px; }
.footer__legal a { color: #64748b; }
.footer__legal a:hover { color: #cbd5e1; }

/* ========================================================================
   滚动揭示动画
   ======================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .7s cubic-bezier(.16,.84,.44,1), transform .7s cubic-bezier(.16,.84,.44,1);
  will-change: opacity, transform;
}
.reveal.is-visible { opacity: 1; transform: none; }

/* 错峰：网格内子项延迟 */
.pain__grid .reveal:nth-child(2),
.products__grid .reveal:nth-child(2),
.adv__grid .reveal:nth-child(2),
.audience__grid .reveal:nth-child(2) { transition-delay: .08s; }
.pain__grid .reveal:nth-child(3),
.products__grid .reveal:nth-child(3),
.adv__grid .reveal:nth-child(3),
.audience__grid .reveal:nth-child(3) { transition-delay: .16s; }
.pain__grid .reveal:nth-child(4),
.audience__grid .reveal:nth-child(4) { transition-delay: .24s; }
.adv__grid .reveal:nth-child(4) { transition-delay: .24s; }
.adv__grid .reveal:nth-child(5) { transition-delay: .32s; }
.adv__grid .reveal:nth-child(6) { transition-delay: .4s; }

/* ========================================================================
   响应式
   ======================================================================== */
@media (max-width: 1024px) {
  .hero__inner { grid-template-columns: 1fr; gap: 48px; }
  .hero__card { max-width: 520px; }
  .tech__grid { grid-template-columns: 1fr; }
  .footer__top { grid-template-columns: 1fr 1fr; }
  .footer__brand { grid-column: 1 / -1; }
}

@media (max-width: 860px) {
  .nav__links { display: none; }
  .nav__actions .btn { display: none; }
  .nav__toggle { display: flex; }

  .section { padding: 72px 0; }
  .section__head { margin-bottom: 40px; }

  .stats { grid-template-columns: repeat(2, 1fr); gap: 20px; padding: 24px; }
  .stat__num { font-size: 32px; }

  .pain__grid,
  .products__grid,
  .adv__grid,
  .audience__grid { grid-template-columns: 1fr 1fr; }

  .pricing__grid { grid-template-columns: 1fr; }
  .price--featured { order: -1; }

  /* 时间线改为纵向 */
  .flow__timeline {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .flow__timeline::before { display: none; }
  .flow__item {
    display: grid;
    grid-template-columns: 56px 1fr;
    gap: 16px;
    text-align: left;
    align-items: start;
    padding-bottom: 8px;
  }
  .flow__dot { margin: 0; }
  .flow__item:not(:last-child)::before {
    content: "";
    position: absolute;
    left: 27px; top: 50px; bottom: 8px;
    width: 2px;
    background: repeating-linear-gradient(var(--c-primary) 0 8px, transparent 8px 16px);
    z-index: 0;
  }

  .cta__box { padding: 56px 24px; }
}

@media (max-width: 560px) {
  .container { padding: 0 18px; }
  .topbar__text { font-size: 12px; }
  .hero { padding: 48px 0 64px; }
  .hero__actions .btn { flex: 1; }
  .pain__grid,
  .products__grid,
  .adv__grid,
  .audience__grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; padding: 20px; }
  .compare__row { grid-template-columns: 1.4fr 1fr 1fr 1fr; }
  .compare__row > div { padding: 12px 10px; font-size: 13px; }
  .compare__row:first-child > div { font-size: 12px; }
  .footer__top { grid-template-columns: 1fr; gap: 28px; }
  .footer__bottom { flex-direction: column; align-items: flex-start; }
}

/* ---------- 无障碍：尊重减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
}