/* ==========================================================================
   易歪歪 YIYIWAWAI — 全站样式表
   static/css/style.css
   作者：易歪歪前端团队
   说明：全站共用样式，包含设计令牌、基础排版、组件、页面模块与响应式适配
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. 设计令牌（Design Tokens）
   -------------------------------------------------------------------------- */
:root {
  /* 品牌色 */
  --c-brand: #2563eb;
  --c-brand-700: #1d4ed8;
  --c-brand-600: #2563eb;
  --c-brand-500: #3b82f6;
  --c-brand-100: #dbeafe;
  --c-brand-50: #eff6ff;
  --c-cyan: #06b6d4;
  --c-accent: #ff6a3d;
  --c-accent-soft: #fff1ec;
  --c-green: #10b981;

  /* 中性色 */
  --c-ink: #0b1b34;
  --c-text: #1e293b;
  --c-muted: #64748b;
  --c-muted-2: #94a3b8;
  --c-line: #e6ecf5;
  --c-bg: #f5f8fd;
  --c-bg-soft: #fbfcfe;
  --c-white: #ffffff;

  /* 深色区 */
  --c-navy: #071a3a;
  --c-navy-2: #0d2a56;
  --c-navy-text: #c7d6ec;

  /* 阴影 */
  --sh-xs: 0 1px 2px rgba(16, 32, 64, .06);
  --sh-sm: 0 1px 3px rgba(16, 32, 64, .07), 0 1px 2px rgba(16, 32, 64, .04);
  --sh-md: 0 12px 30px -12px rgba(16, 32, 64, .18);
  --sh-lg: 0 30px 60px -24px rgba(16, 32, 64, .3);
  --sh-glow: 0 20px 45px -16px rgba(37, 99, 235, .5);

  /* 圆角 */
  --r-xs: 8px;
  --r-sm: 12px;
  --r-md: 16px;
  --r-lg: 22px;
  --r-xl: 30px;
  --r-full: 999px;

  /* 渐变 */
  --g-brand: linear-gradient(135deg, #3b82f6 0%, #2563eb 55%, #1d4ed8 100%);
  --g-brand-soft: linear-gradient(180deg, #f5f9ff 0%, #ffffff 100%);
  --g-navy: linear-gradient(150deg, #071a3a 0%, #0d2a56 55%, #123a7a 100%);
  --g-text: linear-gradient(100deg, #0b1b34 0%, #2563eb 70%, #06b6d4 100%);

  /* 布局 */
  --container: 1200px;
  --header-h: 72px;

  /* 字体 */
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial,
    "Noto Sans SC", sans-serif;
  --font-num: "SF Mono", "JetBrains Mono", Consolas, "Courier New", monospace;
}

/* --------------------------------------------------------------------------
   2. 重置与基础
   -------------------------------------------------------------------------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--c-text);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a { color: var(--c-brand); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--c-brand-700); }

ul, ol { margin: 0; padding: 0; }

h1, h2, h3, h4, h5 {
  margin: 0 0 .6em;
  color: var(--c-ink);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -.01em;
}
h1 { font-size: clamp(30px, 4.6vw, 52px); }
h2 { font-size: clamp(26px, 3.2vw, 38px); }
h3 { font-size: clamp(19px, 1.6vw, 23px); }
h4 { font-size: 17px; }
p { margin: 0 0 1em; }

::selection { background: var(--c-brand); color: #fff; }

:focus-visible {
  outline: 3px solid rgba(37, 99, 235, .45);
  outline-offset: 2px;
  border-radius: 6px;
}

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

.section { padding: 88px 0; position: relative; }
.section--tight { padding: 62px 0; }
.section--soft { background: var(--c-bg-soft); }
.section--white { background: #fff; }
.section--navy { background: var(--g-navy); color: var(--c-navy-text); }
.section--navy h2, .section--navy h3 { color: #fff; }
.section--navy p { color: var(--c-navy-text); }

/* 章节标题 */
.section-head { max-width: 780px; margin: 0 auto 54px; text-align: center; }
.section-head--left { margin-left: 0; text-align: left; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  padding: 6px 14px;
  border-radius: var(--r-full);
  background: var(--c-brand-50);
  color: var(--c-brand-700);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .06em;
}
.eyebrow--accent { background: var(--c-accent-soft); color: #d6451a; }
.section-head .lead,
.lead {
  font-size: 17px;
  color: var(--c-muted);
  margin: 0;
}
.section--navy .lead { color: var(--c-navy-text); }
.text-gradient {
  background: var(--g-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* --------------------------------------------------------------------------
   3. 按钮
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 13px 26px;
  border: 1px solid transparent;
  border-radius: var(--r-full);
  font-family: inherit;
  font-size: 15px;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
  white-space: nowrap;
  transition: transform .18s ease, box-shadow .25s ease, background .25s ease,
    border-color .25s ease, color .25s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn .ico { width: 18px; height: 18px; flex: none; }

.btn-primary {
  background: var(--g-brand);
  color: #fff;
  box-shadow: var(--sh-glow);
}
.btn-primary:hover { color: #fff; box-shadow: 0 24px 48px -14px rgba(37, 99, 235, .62); }

.btn-dark { background: var(--c-ink); color: #fff; box-shadow: var(--sh-md); }
.btn-dark:hover { color: #fff; background: #12294d; }

.btn-outline {
  background: #fff;
  border-color: var(--c-line);
  color: var(--c-ink);
  box-shadow: var(--sh-xs);
}
.btn-outline:hover { border-color: var(--c-brand-500); color: var(--c-brand-700); }

.btn-light {
  background: rgba(255, 255, 255, .12);
  border-color: rgba(255, 255, 255, .3);
  color: #fff;
  backdrop-filter: blur(6px);
}
.btn-light:hover { background: rgba(255, 255, 255, .22); color: #fff; }

.btn-lg { padding: 17px 34px; font-size: 16px; }
.btn-sm { padding: 9px 18px; font-size: 13.5px; }
.btn-block { width: 100%; }

.btn-group { display: flex; flex-wrap: wrap; gap: 14px; }
.btn-group--center { justify-content: center; }

/* 角标文字按钮 */
.link-more {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-weight: 700;
  font-size: 15px;
}
.link-more svg { width: 16px; height: 16px; transition: transform .2s ease; }
.link-more:hover svg { transform: translateX(4px); }

/* --------------------------------------------------------------------------
   4. 顶部导航
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 900;
  height: var(--header-h);
  background: rgba(255, 255, 255, .82);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid rgba(230, 236, 245, .9);
  transition: box-shadow .25s ease, background .25s ease;
}
.site-header.is-scrolled { box-shadow: 0 8px 30px -18px rgba(16, 32, 64, .35); }

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 20px;
}

.brand { display: flex; align-items: center; gap: 10px; flex: none; }
.brand img { height: 38px; width: auto; }
.brand__text { display: flex; flex-direction: column; line-height: 1.1; }
.brand__name { font-size: 19px; font-weight: 800; color: var(--c-ink); letter-spacing: .5px; }
.brand__slogan { font-size: 11px; color: var(--c-muted-2); letter-spacing: .12em; }

.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
  position: relative;
  padding: 9px 15px;
  border-radius: var(--r-full);
  color: var(--c-text);
  font-size: 15px;
  font-weight: 600;
  transition: background .2s ease, color .2s ease;
}
.nav a:hover { background: var(--c-brand-50); color: var(--c-brand-700); }
.nav a.is-active { color: var(--c-brand-700); background: var(--c-brand-50); }

.header-actions { display: flex; align-items: center; gap: 10px; flex: none; }

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--c-line);
  border-radius: 12px;
  background: #fff;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}
.nav-toggle span {
  position: relative;
  display: block;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: var(--c-ink);
  transition: background .2s ease;
}
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: var(--c-ink);
  transition: transform .25s ease, top .25s ease;
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }
.nav-toggle[aria-expanded="true"] span { background: transparent; }
.nav-toggle[aria-expanded="true"] span::before { top: 0; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] span::after { top: 0; transform: rotate(-45deg); }

/* --------------------------------------------------------------------------
   5. 首页 Hero
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  overflow: hidden;
  background: var(--g-navy);
  color: #fff;
  padding: 76px 0 96px;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(1000px 500px at 82% 8%, rgba(59, 130, 246, .42), transparent 62%),
    radial-gradient(760px 460px at 6% 92%, rgba(6, 182, 212, .3), transparent 60%);
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .055) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(circle at 50% 30%, #000 30%, transparent 78%);
  -webkit-mask-image: radial-gradient(circle at 50% 30%, #000 30%, transparent 78%);
  pointer-events: none;
}
.hero .container { position: relative; z-index: 2; }

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 56px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 8px 7px 16px;
  border-radius: var(--r-full);
  background: rgba(255, 255, 255, .1);
  border: 1px solid rgba(255, 255, 255, .22);
  font-size: 13.5px;
  font-weight: 600;
  color: #e8f0ff;
  backdrop-filter: blur(8px);
}
.hero-badge b {
  padding: 3px 11px;
  border-radius: var(--r-full);
  background: var(--c-accent);
  color: #fff;
  font-size: 12px;
  letter-spacing: .04em;
}

.hero h1 {
  margin: 22px 0 18px;
  color: #fff;
  font-size: clamp(32px, 4.8vw, 54px);
  line-height: 1.16;
}
.hero h1 .hl {
  background: linear-gradient(100deg, #7dd3fc, #60a5fa 60%, #a78bfa);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-sub {
  max-width: 560px;
  font-size: 17.5px;
  color: #c3d4ec;
  margin-bottom: 28px;
}

.hero-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  margin: 34px 0 0;
  padding-top: 28px;
  border-top: 1px solid rgba(255, 255, 255, .14);
}
.hero-metric__num {
  font-family: var(--font-num);
  font-size: 34px;
  font-weight: 800;
  color: #fff;
  line-height: 1;
}
.hero-metric__num small { font-size: 16px; font-weight: 700; margin-left: 3px; }
.hero-metric__label { font-size: 13.5px; color: #9fb4d4; margin-top: 8px; }

/* 支持平台 */
.hero-platforms {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 12px;
  margin-top: 30px;
  font-size: 13.5px;
  color: #9fb4d4;
}
.chip {
  padding: 5px 13px;
  border-radius: var(--r-full);
  background: rgba(255, 255, 255, .09);
  border: 1px solid rgba(255, 255, 255, .16);
  color: #dbe7fa;
  font-size: 13px;
  font-weight: 600;
}

/* 下载按钮组 */
.hero-downloads {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}
.dl-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 158px;
  padding: 13px 20px;
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, .1);
  border: 1px solid rgba(255, 255, 255, .22);
  color: #fff;
  backdrop-filter: blur(10px);
  transition: transform .18s ease, background .25s ease, border-color .25s ease;
}
.dl-btn:hover {
  transform: translateY(-3px);
  background: rgba(255, 255, 255, .2);
  border-color: rgba(255, 255, 255, .45);
  color: #fff;
}
.dl-btn svg { width: 26px; height: 26px; flex: none; }
.dl-btn span { display: flex; flex-direction: column; line-height: 1.25; }
.dl-btn b { font-size: 15px; font-weight: 700; }
.dl-btn em { font-size: 11.5px; font-style: normal; color: #a9c0e0; }

/* --------------------------------------------------------------------------
   6. 应用窗口仿真（Hero 右侧）
   -------------------------------------------------------------------------- */
.eyy-window {
  position: relative;
  border-radius: var(--r-lg);
  background: #fff;
  box-shadow: 0 40px 80px -30px rgba(3, 12, 30, .8), 0 0 0 1px rgba(255, 255, 255, .12);
  overflow: hidden;
  font-size: 12.5px;
  color: var(--c-text);
}
.eyy-window__bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 11px 14px;
  background: #eef3fa;
  border-bottom: 1px solid var(--c-line);
}
.eyy-dots { display: flex; gap: 6px; }
.eyy-dots i { width: 11px; height: 11px; border-radius: 50%; display: block; }
.eyy-dots i:nth-child(1) { background: #ff5f57; }
.eyy-dots i:nth-child(2) { background: #febc2e; }
.eyy-dots i:nth-child(3) { background: #28c840; }
.eyy-window__title {
  margin-left: 8px;
  font-size: 12px;
  font-weight: 700;
  color: #64748b;
}
.eyy-window__title b { color: var(--c-brand); }

.eyy-window__body { display: flex; min-height: 356px; }

.eyy-side {
  width: 132px;
  flex: none;
  padding: 12px 10px;
  background: #f7fafe;
  border-right: 1px solid var(--c-line);
}
.eyy-side__label {
  font-size: 10.5px;
  font-weight: 700;
  color: var(--c-muted-2);
  letter-spacing: .08em;
  padding: 0 6px 8px;
}
.eyy-side__item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 9px;
  border-radius: 8px;
  color: #475569;
  font-weight: 600;
  font-size: 12px;
  margin-bottom: 2px;
}
.eyy-side__item i {
  width: 8px; height: 8px; border-radius: 3px; flex: none; background: var(--c-brand-500);
}
.eyy-side__item:nth-child(3) i { background: #f59e0b; }
.eyy-side__item:nth-child(4) i { background: #10b981; }
.eyy-side__item:nth-child(5) i { background: #a855f7; }
.eyy-side__item:nth-child(6) i { background: #ef4444; }
.eyy-side__item.is-active { background: #e8f1ff; color: var(--c-brand-700); }
.eyy-side__item span.count {
  margin-left: auto;
  font-size: 10px;
  color: var(--c-muted-2);
  font-family: var(--font-num);
}

.eyy-main { flex: 1; padding: 12px 14px; display: flex; flex-direction: column; gap: 10px; min-width: 0; }

.eyy-search {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 11px;
  border-radius: 9px;
  background: #f1f5fb;
  border: 1px solid var(--c-line);
  color: var(--c-muted-2);
  font-size: 12px;
}
.eyy-search svg { width: 14px; height: 14px; flex: none; }
.eyy-search .caret {
  width: 1px; height: 14px; background: var(--c-brand);
  animation: blink 1.1s steps(2, start) infinite;
}
@keyframes blink { to { opacity: 0; } }

.eyy-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.eyy-tags span {
  padding: 4px 10px;
  border-radius: var(--r-full);
  background: #fff;
  border: 1px solid var(--c-line);
  font-size: 11px;
  font-weight: 600;
  color: #64748b;
}
.eyy-tags span.is-on { background: var(--c-brand); border-color: var(--c-brand); color: #fff; }

.eyy-msgs { display: flex; flex-direction: column; gap: 7px; }
.eyy-msg {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 9px 11px;
  border-radius: 10px;
  background: #fbfdff;
  border: 1px solid var(--c-line);
}
.eyy-msg__dot {
  width: 6px; height: 6px; border-radius: 50%; background: var(--c-brand-500); flex: none;
}
.eyy-msg__text {
  flex: 1;
  height: 7px;
  border-radius: 4px;
  background: linear-gradient(90deg, #d7e3f5, #eef3fa);
  overflow: hidden;
  white-space: nowrap;
}
.eyy-msg__key {
  font-family: var(--font-num);
  font-size: 10px;
  font-weight: 700;
  color: #94a3b8;
  background: #eef3fa;
  padding: 2px 7px;
  border-radius: 6px;
  flex: none;
}
.eyy-msg mark {
  background: #fef3c7;
  color: #92400e;
  border-radius: 3px;
  padding: 0 3px;
}
.eyy-msg--hit { border-color: #fcd34d; background: #fffdf5; }

.eyy-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 10px;
  border-top: 1px dashed var(--c-line);
  font-size: 11px;
  color: var(--c-muted-2);
}
.eyy-send {
  padding: 6px 14px;
  border-radius: var(--r-full);
  background: var(--g-brand);
  color: #fff;
  font-weight: 700;
  font-size: 11.5px;
  box-shadow: 0 8px 18px -8px rgba(37, 99, 235, .8);
}

/* 浮动强调卡 */
.float-card {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: 14px;
  background: rgba(255, 255, 255, .97);
  box-shadow: var(--sh-lg);
  color: var(--c-ink);
  font-size: 13px;
  font-weight: 700;
  z-index: 3;
  animation: floaty 5s ease-in-out infinite;
}
.float-card i {
  width: 32px; height: 32px; border-radius: 10px; display: grid; place-items: center;
  background: var(--c-brand-50); color: var(--c-brand); flex: none;
}
.float-card i svg { width: 17px; height: 17px; }
.float-card em { display: block; font-style: normal; font-size: 11px; color: var(--c-muted); font-weight: 600; }
.float-card--tl { top: -18px; left: -26px; }
.float-card--br { bottom: -20px; right: -18px; animation-delay: -2.4s; }
@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-11px); }
}

.hero-visual { position: relative; }

/* --------------------------------------------------------------------------
   7. 数据条 / 客户logo
   -------------------------------------------------------------------------- */
.stat-band {
  background: #fff;
  border-bottom: 1px solid var(--c-line);
  padding: 34px 0;
}
.stat-band__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}
.stat-band__item { position: relative; padding: 6px 10px; }
.stat-band__item + .stat-band__item::before {
  content: "";
  position: absolute;
  left: 0; top: 18%;
  height: 64%;
  width: 1px;
  background: var(--c-line);
}
.stat-band__num {
  font-family: var(--font-num);
  font-size: 34px;
  font-weight: 800;
  color: var(--c-ink);
  line-height: 1.1;
}
.stat-band__num b { color: var(--c-brand); font-weight: 800; }
.stat-band__label { font-size: 14px; color: var(--c-muted); margin-top: 6px; }

/* --------------------------------------------------------------------------
   8. 通用卡片网格
   -------------------------------------------------------------------------- */
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  position: relative;
  padding: 30px 28px;
  border-radius: var(--r-lg);
  background: #fff;
  border: 1px solid var(--c-line);
  box-shadow: var(--sh-sm);
  transition: transform .28s cubic-bezier(.2, .7, .3, 1), box-shadow .28s ease,
    border-color .28s ease;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--sh-lg); border-color: #d9e6fb; }

.card__icon {
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  margin-bottom: 20px;
  background: var(--c-brand-50);
  color: var(--c-brand);
}
.card__icon svg { width: 27px; height: 27px; }
.card__icon--accent { background: var(--c-accent-soft); color: var(--c-accent); }
.card__icon--green { background: #e9fbf3; color: var(--c-green); }
.card__icon--purple { background: #f5efff; color: #8b5cf6; }
.card__icon--cyan { background: #e6f9fe; color: var(--c-cyan); }

.card h3 { margin-bottom: 10px; }
.card p { color: var(--c-muted); margin-bottom: 0; font-size: 15px; }
.card__tag {
  display: inline-block;
  margin-bottom: 12px;
  padding: 3px 10px;
  border-radius: var(--r-full);
  background: var(--c-brand-50);
  color: var(--c-brand-700);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .04em;
}

/* 图文卡（左图右文 / 上图下文） */
.media-card {
  overflow: hidden;
  padding: 0;
  border-radius: var(--r-lg);
  background: #fff;
  border: 1px solid var(--c-line);
  box-shadow: var(--sh-sm);
  transition: transform .3s ease, box-shadow .3s ease;
}
.media-card:hover { transform: translateY(-6px); box-shadow: var(--sh-lg); }
.media-card__img {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: #e8effb;
}
.media-card__img img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .6s cubic-bezier(.2, .7, .3, 1);
}
.media-card:hover .media-card__img img { transform: scale(1.06); }
.media-card__body { padding: 24px 26px 28px; }
.media-card__body h3 { margin-bottom: 8px; }
.media-card__body p { color: var(--c-muted); font-size: 14.5px; margin: 0; }

/* --------------------------------------------------------------------------
   9. 左右图文交错（Feature rows）
   -------------------------------------------------------------------------- */
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  padding: 40px 0;
}
.feature-row--flip .feature-row__media { order: 2; }
.feature-row__media {
  position: relative;
  border-radius: var(--r-xl);
  overflow: hidden;
  box-shadow: var(--sh-lg);
  background: #e8effb;
  aspect-ratio: 4 / 3;
}
.feature-row__media img { width: 100%; height: 100%; object-fit: cover; }
.feature-row__media::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(160deg, rgba(37, 99, 235, .1), transparent 55%);
}
.feature-row__text h2 { margin-bottom: 16px; }
.feature-row__text > p { color: var(--c-muted); font-size: 16.5px; }

.check-list { list-style: none; display: grid; gap: 12px; margin: 22px 0 0; }
.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 11px;
  font-size: 15px;
  color: var(--c-text);
  font-weight: 500;
}
.check-list li svg { width: 19px; height: 19px; flex: none; color: var(--c-green); margin-top: 3px; }
.check-list--brand li svg { color: var(--c-brand); }

/* --------------------------------------------------------------------------
   10. 功能清单（能力矩阵）
   -------------------------------------------------------------------------- */
.cap-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(178px, 1fr));
  gap: 14px;
}
.cap-item {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 15px 17px;
  border-radius: var(--r-md);
  background: #fff;
  border: 1px solid var(--c-line);
  font-size: 14.5px;
  font-weight: 600;
  color: var(--c-text);
  box-shadow: var(--sh-xs);
  transition: border-color .2s ease, transform .2s ease, color .2s ease;
}
.cap-item:hover { border-color: var(--c-brand-500); color: var(--c-brand-700); transform: translateY(-3px); }
.cap-item svg { width: 18px; height: 18px; color: var(--c-brand); flex: none; }
.cap-item--hot { border-color: #ffd9c9; background: #fffaf7; }
.cap-item--hot svg { color: var(--c-accent); }

/* --------------------------------------------------------------------------
   11. 使用步骤
   -------------------------------------------------------------------------- */
.steps { counter-reset: step; display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.step {
  position: relative;
  padding: 32px 26px 28px;
  border-radius: var(--r-lg);
  background: #fff;
  border: 1px solid var(--c-line);
  box-shadow: var(--sh-sm);
}
.step::before {
  counter-increment: step;
  content: "0" counter(step);
  font-family: var(--font-num);
  font-size: 40px;
  font-weight: 800;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1.4px #c9dcf8;
  display: block;
  margin-bottom: 14px;
}
.step h3 { font-size: 18px; margin-bottom: 8px; }
.step p { color: var(--c-muted); font-size: 14.5px; margin: 0; }
.step__arrow {
  position: absolute;
  right: -18px;
  top: 46px;
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: #fff;
  border: 1px solid var(--c-line);
  color: var(--c-brand);
  z-index: 2;
  box-shadow: var(--sh-xs);
}
.step__arrow svg { width: 16px; height: 16px; }
.step:last-child .step__arrow { display: none; }

/* --------------------------------------------------------------------------
   12. 场景 / 行业
   -------------------------------------------------------------------------- */
.scene-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.scene {
  padding: 28px;
  border-radius: var(--r-lg);
  background: linear-gradient(180deg, #ffffff, #f7faff);
  border: 1px solid var(--c-line);
  transition: box-shadow .28s ease, transform .28s ease;
}
.scene:hover { transform: translateY(-5px); box-shadow: var(--sh-md); }
.scene__ico {
  width: 46px; height: 46px; border-radius: 13px; display: grid; place-items: center;
  background: var(--g-brand); color: #fff; margin-bottom: 16px;
  box-shadow: 0 10px 20px -10px rgba(37, 99, 235, .8);
}
.scene__ico svg { width: 23px; height: 23px; }
.scene h3 { font-size: 18px; margin-bottom: 8px; }
.scene p { color: var(--c-muted); font-size: 14.5px; margin-bottom: 14px; }
.scene ul { list-style: none; display: grid; gap: 7px; }
.scene ul li {
  font-size: 13.5px; color: var(--c-text); padding-left: 18px; position: relative;
}
.scene ul li::before {
  content: ""; position: absolute; left: 0; top: 9px;
  width: 7px; height: 7px; border-radius: 50%; background: var(--c-brand-500);
}

/* --------------------------------------------------------------------------
   13. 评价 / 口碑
   -------------------------------------------------------------------------- */
.quote-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.quote {
  padding: 28px;
  border-radius: var(--r-lg);
  background: #fff;
  border: 1px solid var(--c-line);
  box-shadow: var(--sh-sm);
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.quote__stars { display: flex; gap: 3px; color: #fbbf24; }
.quote__stars svg { width: 17px; height: 17px; }
.quote p { font-size: 15px; color: var(--c-text); margin: 0; flex: 1; }
.quote__who { display: flex; align-items: center; gap: 12px; padding-top: 16px; border-top: 1px solid var(--c-line); }
.avatar {
  width: 42px; height: 42px; border-radius: 50%; flex: none;
  display: grid; place-items: center;
  background: var(--g-brand); color: #fff; font-weight: 800; font-size: 15px;
}
.quote__who b { display: block; font-size: 14.5px; color: var(--c-ink); }
.quote__who span { font-size: 12.5px; color: var(--c-muted-2); }

/* --------------------------------------------------------------------------
   14. CTA 区块
   -------------------------------------------------------------------------- */
.cta {
  position: relative;
  overflow: hidden;
  border-radius: var(--r-xl);
  padding: 64px 56px;
  background: var(--g-navy);
  color: #fff;
  box-shadow: var(--sh-lg);
}
.cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(700px 380px at 88% 0%, rgba(59, 130, 246, .5), transparent 60%),
    radial-gradient(560px 320px at 4% 100%, rgba(6, 182, 212, .34), transparent 62%);
}
.cta__inner { position: relative; z-index: 2; display: grid; grid-template-columns: 1.4fr auto; gap: 34px; align-items: center; }
.cta h2 { color: #fff; margin-bottom: 12px; }
.cta p { color: #c3d4ec; margin: 0; font-size: 16.5px; }

/* --------------------------------------------------------------------------
   15. 页脚
   -------------------------------------------------------------------------- */
.site-footer {
  background: #05132c;
  color: #8ba2c4;
  padding: 66px 0 0;
  font-size: 14px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr repeat(3, 1fr);
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}
.footer-brand img { height: 40px; margin-bottom: 18px; }
.footer-brand p { color: #8ba2c4; font-size: 13.5px; max-width: 300px; line-height: 1.9; }
.footer-col h4 {
  color: #fff; font-size: 15px; margin-bottom: 18px; font-weight: 700;
}
.footer-col ul { list-style: none; display: grid; gap: 11px; }
.footer-col a { color: #8ba2c4; font-size: 13.5px; }
.footer-col a:hover { color: #fff; }
.footer-bottom {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 14px;
  padding: 24px 0 30px;
  font-size: 12.5px;
  color: #6b82a6;
}
.footer-bottom a { color: #8ba2c4; }
.footer-bottom a:hover { color: #fff; }
.footer-friendlink { display: flex; flex-wrap: wrap; gap: 10px 16px; margin-top: 6px; }

/* --------------------------------------------------------------------------
   16. 子页面头部横幅
   -------------------------------------------------------------------------- */
.page-hero {
  position: relative;
  overflow: hidden;
  padding: 66px 0 60px;
  background: var(--g-navy);
  color: #fff;
  text-align: center;
}
.page-hero::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(760px 400px at 50% -10%, rgba(59, 130, 246, .46), transparent 62%);
}
.page-hero .container { position: relative; z-index: 2; }
.page-hero h1 { color: #fff; margin-bottom: 14px; }
.page-hero .lead { color: #c3d4ec; max-width: 720px; margin: 0 auto; font-size: 16.5px; }

.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 9px;
  margin-bottom: 20px;
  font-size: 13px;
  color: #93a8cb;
}
.breadcrumb a { color: #93a8cb; }
.breadcrumb a:hover { color: #fff; }
.breadcrumb span.sep { opacity: .5; }
.breadcrumb [aria-current] { color: #fff; font-weight: 600; }

/* --------------------------------------------------------------------------
   17. 下载页组件
   -------------------------------------------------------------------------- */
.dl-hero-banner {
  border-radius: var(--r-xl);
  overflow: hidden;
  box-shadow: var(--sh-lg);
  margin-bottom: 44px;
}
.dl-hero-banner img { width: 100%; aspect-ratio: 16 / 7; object-fit: cover; }

.os-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.os-card {
  display: flex;
  gap: 22px;
  padding: 28px;
  border-radius: var(--r-lg);
  background: #fff;
  border: 1px solid var(--c-line);
  box-shadow: var(--sh-sm);
  transition: box-shadow .28s ease, transform .28s ease, border-color .28s ease;
}
.os-card:hover { transform: translateY(-5px); box-shadow: var(--sh-lg); border-color: #d9e6fb; }
.os-card__ico {
  width: 62px; height: 62px; flex: none; border-radius: 18px;
  display: grid; place-items: center;
  background: var(--c-brand-50); color: var(--c-brand);
}
.os-card__ico svg { width: 32px; height: 32px; }
.os-card__body { flex: 1; min-width: 0; }
.os-card__body h3 { margin-bottom: 6px; display: flex; align-items: center; gap: 10px; }
.badge-ver {
  padding: 2px 9px; border-radius: var(--r-full);
  background: #e9fbf3; color: #047857; font-size: 11.5px; font-weight: 700;
}
.os-card__meta {
  display: flex; flex-wrap: wrap; gap: 6px 16px;
  font-size: 12.5px; color: var(--c-muted-2); margin-bottom: 12px;
}
.os-card__meta span { display: inline-flex; align-items: center; gap: 5px; }
.os-card__body p { font-size: 14px; color: var(--c-muted); margin-bottom: 16px; }
.os-card__actions { display: flex; flex-wrap: wrap; gap: 10px; }

.req-table, .data-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border-radius: var(--r-md);
  overflow: hidden;
  box-shadow: var(--sh-sm);
  font-size: 14.5px;
}
.req-table th, .req-table td,
.data-table th, .data-table td {
  padding: 15px 18px;
  text-align: left;
  border-bottom: 1px solid var(--c-line);
}
.req-table thead th, .data-table thead th {
  background: #f1f6fe;
  color: var(--c-ink);
  font-weight: 700;
  font-size: 14px;
}
.req-table tbody tr:last-child td, .data-table tbody tr:last-child td { border-bottom: none; }
.req-table tbody tr:hover, .data-table tbody tr:hover { background: #fafcff; }

.note-box {
  display: flex;
  gap: 14px;
  padding: 20px 22px;
  border-radius: var(--r-md);
  background: #fffbeb;
  border: 1px solid #fde68a;
  color: #78350f;
  font-size: 14.5px;
}
.note-box svg { width: 22px; height: 22px; flex: none; color: #d97706; }
.note-box--info { background: var(--c-brand-50); border-color: #bfdbfe; color: #1e3a8a; }
.note-box--info svg { color: var(--c-brand); }
.note-box p { margin: 0; }

/* 更新日志 */
.timeline { position: relative; padding-left: 34px; }
.timeline::before {
  content: ""; position: absolute; left: 9px; top: 6px; bottom: 6px; width: 2px;
  background: linear-gradient(180deg, var(--c-brand), #bfdbfe);
}
.timeline__item { position: relative; padding-bottom: 32px; }
.timeline__item::before {
  content: ""; position: absolute; left: -33px; top: 6px;
  width: 14px; height: 14px; border-radius: 50%;
  background: #fff; border: 3px solid var(--c-brand);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, .12);
}
.timeline__date {
  display: inline-block; margin-bottom: 8px; padding: 3px 11px;
  border-radius: var(--r-full); background: var(--c-brand-50);
  color: var(--c-brand-700); font-size: 12.5px; font-weight: 700;
  font-family: var(--font-num);
}
.timeline__item h3 { font-size: 17px; margin-bottom: 8px; }
.timeline__item ul { list-style: none; display: grid; gap: 7px; }
.timeline__item ul li {
  font-size: 14.5px; color: var(--c-muted); padding-left: 20px; position: relative;
}
.timeline__item ul li::before {
  content: ""; position: absolute; left: 3px; top: 10px;
  width: 6px; height: 6px; border-radius: 50%; background: var(--c-brand-500);
}

/* --------------------------------------------------------------------------
   18. FAQ 手风琴
   -------------------------------------------------------------------------- */
.faq-list { max-width: 900px; margin: 0 auto; display: grid; gap: 14px; }
.faq-item {
  border-radius: var(--r-md);
  background: #fff;
  border: 1px solid var(--c-line);
  box-shadow: var(--sh-xs);
  overflow: hidden;
  transition: box-shadow .25s ease, border-color .25s ease;
}
.faq-item.is-open { border-color: #c7ddfb; box-shadow: var(--sh-md); }
.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  background: none;
  border: none;
  font-family: inherit;
  font-size: 16.5px;
  font-weight: 700;
  color: var(--c-ink);
  text-align: left;
  cursor: pointer;
  line-height: 1.5;
}
.faq-q__no {
  flex: none;
  width: 30px; height: 30px; border-radius: 9px;
  display: grid; place-items: center;
  background: var(--c-brand-50); color: var(--c-brand-700);
  font-family: var(--font-num); font-size: 13px; font-weight: 800;
}
.faq-item.is-open .faq-q__no { background: var(--c-brand); color: #fff; }
.faq-q__chev {
  margin-left: auto; flex: none; width: 22px; height: 22px; color: var(--c-muted-2);
  transition: transform .3s ease, color .3s ease;
}
.faq-item.is-open .faq-q__chev { transform: rotate(180deg); color: var(--c-brand); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .38s cubic-bezier(.2, .7, .3, 1);
}
.faq-a__inner {
  padding: 0 24px 24px 70px;
  color: var(--c-muted);
  font-size: 15px;
  line-height: 1.85;
}
.faq-a__inner p { margin-bottom: 10px; }
.faq-a__inner p:last-child { margin-bottom: 0; }
.faq-a__inner ul { list-style: none; display: grid; gap: 7px; margin: 8px 0; }
.faq-a__inner ul li { padding-left: 18px; position: relative; }
.faq-a__inner ul li::before {
  content: ""; position: absolute; left: 2px; top: 10px;
  width: 6px; height: 6px; border-radius: 50%; background: var(--c-brand-500);
}
.faq-a__inner strong { color: var(--c-ink); }

.faq-filter { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 34px; }
.faq-filter button {
  padding: 9px 20px;
  border-radius: var(--r-full);
  background: #fff;
  border: 1px solid var(--c-line);
  color: var(--c-text);
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all .2s ease;
}
.faq-filter button:hover { border-color: var(--c-brand-500); color: var(--c-brand-700); }
.faq-filter button.is-active {
  background: var(--g-brand); border-color: transparent; color: #fff;
  box-shadow: 0 10px 22px -12px rgba(37, 99, 235, .8);
}

/* --------------------------------------------------------------------------
   19. 关于我们组件
   -------------------------------------------------------------------------- */
.about-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.about-stat {
  padding: 26px;
  border-radius: var(--r-lg);
  background: #fff;
  border: 1px solid var(--c-line);
  text-align: center;
  box-shadow: var(--sh-xs);
}
.about-stat b {
  display: block; font-family: var(--font-num); font-size: 32px; font-weight: 800;
  color: var(--c-brand); line-height: 1.1;
}
.about-stat span { font-size: 13.5px; color: var(--c-muted); }

.value-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.value-card {
  padding: 30px 26px;
  border-radius: var(--r-lg);
  background: #fff;
  border: 1px solid var(--c-line);
  box-shadow: var(--sh-sm);
}
.value-card svg { width: 30px; height: 30px; color: var(--c-brand); margin-bottom: 16px; }
.value-card h3 { font-size: 18px; margin-bottom: 8px; }
.value-card p { color: var(--c-muted); font-size: 14.5px; margin: 0; }

/* --------------------------------------------------------------------------
   21. 通用工具类与动效
   -------------------------------------------------------------------------- */
.mt-0 { margin-top: 0 !important; }
.mb-0 { margin-bottom: 0 !important; }
.text-center { text-align: center; }
.muted { color: var(--c-muted); }
.nowrap { white-space: nowrap; }
.divider { height: 1px; background: var(--c-line); border: 0; margin: 0; }

.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .7s cubic-bezier(.2, .7, .3, 1), transform .7s cubic-bezier(.2, .7, .3, 1);
  will-change: opacity, transform;
}
.reveal.is-in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: .08s; }
.reveal[data-delay="2"] { transition-delay: .16s; }
.reveal[data-delay="3"] { transition-delay: .24s; }
.reveal[data-delay="4"] { transition-delay: .32s; }

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .001ms !important; transition-duration: .001ms !important; }
  .reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}

.to-top {
  position: fixed;
  right: 26px;
  bottom: 26px;
  z-index: 800;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid var(--c-line);
  background: #fff;
  color: var(--c-brand);
  display: grid;
  place-items: center;
  cursor: pointer;
  box-shadow: var(--sh-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
  transition: opacity .3s ease, transform .3s ease, visibility .3s ease;
}
.to-top.is-show { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { background: var(--c-brand); color: #fff; border-color: var(--c-brand); }
.to-top svg { width: 20px; height: 20px; }

/* --------------------------------------------------------------------------
   22. 响应式
   -------------------------------------------------------------------------- */
@media (max-width: 1080px) {
  .hero-grid { grid-template-columns: 1fr; gap: 46px; }
  .hero-visual { max-width: 620px; }
  .float-card--tl { left: -10px; }
  .float-card--br { right: -6px; }
  .feature-row { gap: 40px; }
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; row-gap: 34px; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .step__arrow { display: none; }
  .footer-brand { grid-column: span 3; }
}

@media (max-width: 920px) {
  .nav { display: none; }
  .nav-toggle { display: flex; }
  .header-actions .btn { display: none; }

  .site-header.is-open .nav {
    display: flex;
    position: absolute;
    top: var(--header-h);
    left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 14px 24px 20px;
    background: #fff;
    border-bottom: 1px solid var(--c-line);
    box-shadow: var(--sh-lg);
  }
  .site-header.is-open .nav a { padding: 13px 16px; border-radius: var(--r-sm); font-size: 16px; }

  .grid-3, .grid-2, .os-grid, .scene-grid, .quote-grid,
  .value-grid, .about-stats { grid-template-columns: 1fr; }
  .about-stats { grid-template-columns: repeat(2, 1fr); }
  .feature-row { grid-template-columns: 1fr; gap: 28px; padding: 26px 0; }
  .feature-row--flip .feature-row__media { order: 0; }
  .cta { padding: 44px 30px; }
  .cta__inner { grid-template-columns: 1fr; }
  .stat-band__grid { grid-template-columns: repeat(2, 1fr); row-gap: 26px; }
  .stat-band__item + .stat-band__item::before { display: none; }
}

@media (max-width: 640px) {
  .section { padding: 60px 0; }
  .container { padding: 0 18px; }
  .hero { padding: 54px 0 70px; }
  .hero-metrics { gap: 22px 28px; }
  .hero-metric__num { font-size: 27px; }
  .faq-a__inner { padding-left: 24px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: span 2; }
  .eyy-side { width: 104px; }
  .float-card { display: none; }
  .to-top { right: 16px; bottom: 16px; }
  .grid-4 { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .stat-band__grid { grid-template-columns: 1fr 1fr; }
  .cap-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
  .card, .step, .scene, .quote { padding: 24px 22px; }
  .cta { border-radius: var(--r-lg); }
}

/* --------------------------------------------------------------------------
   23. 最新资讯
   -------------------------------------------------------------------------- */
.news-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 36px;
}
.news-filter button {
  padding: 9px 20px;
  border-radius: var(--r-full);
  background: #fff;
  border: 1px solid var(--c-line);
  color: var(--c-text);
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all .2s ease;
}
.news-filter button:hover { border-color: var(--c-brand-500); color: var(--c-brand-700); }
.news-filter button.is-active {
  background: var(--g-brand);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 10px 22px -12px rgba(37, 99, 235, .8);
}

/* 头条 */
.news-featured {
  display: grid;
  grid-template-columns: 1.06fr .94fr;
  overflow: hidden;
  border-radius: var(--r-xl);
  background: #fff;
  border: 1px solid var(--c-line);
  box-shadow: var(--sh-md);
}
.news-featured__media {
  position: relative;
  min-height: 340px;
  overflow: hidden;
  background: #e8effb;
}
.news-featured__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .7s cubic-bezier(.2, .7, .3, 1);
}
.news-featured:hover .news-featured__media img { transform: scale(1.04); }
.news-featured__body {
  padding: 40px 40px 36px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
}
.news-featured__body h2 {
  font-size: clamp(22px, 2.1vw, 30px);
  margin-bottom: 14px;
}
.news-featured__body p {
  color: var(--c-muted);
  font-size: 15px;
  margin-bottom: 22px;
}

/* 元信息 */
.news-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  margin-bottom: 14px;
  font-size: 12.5px;
  color: var(--c-muted-2);
}
.news-meta time { font-family: var(--font-num); }
.news-tag {
  padding: 3px 11px;
  border-radius: var(--r-full);
  background: var(--c-brand-50);
  color: var(--c-brand-700);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .04em;
}
.news-tag--accent { background: var(--c-accent-soft); color: #d6451a; }

/* 列表卡片 */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.news-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-radius: var(--r-lg);
  background: #fff;
  border: 1px solid var(--c-line);
  box-shadow: var(--sh-sm);
  transition: transform .28s ease, box-shadow .28s ease, border-color .28s ease;
}
.news-card:hover { transform: translateY(-6px); box-shadow: var(--sh-lg); border-color: #d9e6fb; }
.news-card__img {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: #e8effb;
}
.news-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .6s cubic-bezier(.2, .7, .3, 1);
}
.news-card:hover .news-card__img img { transform: scale(1.06); }
.news-card__body {
  padding: 22px 24px 26px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.news-card__body h3 {
  font-size: 17.5px;
  line-height: 1.45;
  margin-bottom: 10px;
}
.news-card__body p {
  font-size: 14px;
  color: var(--c-muted);
  margin: 0 0 14px;
  flex: 1;
}
.news-card__body .news-meta { margin-bottom: 10px; }

/* 文章正文 */
.article { max-width: 900px; margin: 0 auto; }
.article__head { margin-bottom: 26px; }
.article__head h2 { margin-bottom: 12px; }
.article__media {
  border-radius: var(--r-lg);
  overflow: hidden;
  margin: 24px 0 34px;
  box-shadow: var(--sh-md);
}
.article__media img { width: 100%; aspect-ratio: 16 / 8; object-fit: cover; }
.article p { color: var(--c-text); font-size: 16px; line-height: 1.95; }
.article h3 { margin: 32px 0 10px; font-size: 20px; }
.article ul { list-style: none; display: grid; gap: 10px; margin: 16px 0 22px; }
.article ul li {
  position: relative;
  padding-left: 20px;
  color: var(--c-text);
  font-size: 15.5px;
}
.article ul li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 10px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--c-brand-500);
}
.article blockquote {
  margin: 28px 0;
  padding: 22px 26px;
  border-left: 4px solid var(--c-brand);
  background: var(--c-brand-50);
  border-radius: 0 var(--r-md) var(--r-md) 0;
}
.article blockquote p {
  margin: 0;
  font-size: 16px;
  color: #1e3a8a;
  font-weight: 600;
}

@media (max-width: 920px) {
  .news-featured { grid-template-columns: 1fr; }
  .news-featured__media { min-height: 220px; aspect-ratio: 16 / 9; }
  .news-featured__body { padding: 28px 26px 30px; }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .news-grid { grid-template-columns: 1fr; }
  .article p { font-size: 15.5px; }
}

/* 打印 */
@media print {
  .site-header, .to-top, .cta, .hero-downloads { display: none !important; }
  body { background: #fff; }
  .section { padding: 20px 0; }
}