/* ============================================================
   千折本地生活系统 - 前台样式（全本地化，无外部依赖）
   ============================================================ */

:root {
  --brand: #FF4A2B;
  --brand-2: #FF8A2A;
  --brand-grad: linear-gradient(135deg, #FF4A2B 0%, #FF8A2A 100%);
  --brand-soft: #FFF3EF;
  --ink: #191B2B;
  --ink-2: #3E435C;
  --muted: #7A81A0;
  --line: #E8EAF2;
  --bg: #F6F7FB;
  --card: #FFFFFF;
  --gold: #FFB43A;
  --green: #1FC78D;
  --blue: #3E8BFF;
  --purple: #7A5CFF;
  --pink: #F0509B;
  --teal: #0FB5A6;
  --radius: 18px;
  --shadow-sm: 0 2px 10px rgba(25, 27, 43, .05);
  --shadow-md: 0 8px 28px rgba(25, 27, 43, .09);
  --shadow-lg: 0 18px 50px rgba(25, 27, 43, .14);
  --container: min(86%, 1680px);
  --header-h: 72px;
  --ease-spring: cubic-bezier(.2, .9, .3, 1.2);
}

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

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 16px); }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--ink);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

.container { width: var(--container); margin-inline: auto; }

.ic { width: 1em; height: 1em; display: inline-block; vertical-align: -0.15em; flex-shrink: 0; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 12px 26px;
  border: none;
  border-radius: 12px;
  font-size: 14.5px;
  font-weight: 600;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: transform .25s var(--ease-spring), box-shadow .25s, background .25s, color .25s;
  white-space: nowrap;
  text-decoration: none;
}
.btn:active { transform: scale(.96); }
.btn-primary { background: var(--brand-grad); color: #fff; box-shadow: 0 6px 18px rgba(255, 74, 43, .32); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 26px rgba(255, 74, 43, .42); }
.btn-ghost { background: #fff; color: var(--ink-2); border: 1.5px solid var(--line); }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand); transform: translateY(-2px); }
.btn-dark { background: var(--ink); color: #fff; }
.btn-dark:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-sm { padding: 9px 18px; font-size: 13.5px; border-radius: 10px; }
.btn-lg { padding: 15px 34px; font-size: 16px; border-radius: 14px; }
.btn-block { width: 100%; }

.ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, .45);
  transform: scale(0);
  animation: ripple .6s ease-out forwards;
  pointer-events: none;
}
.btn-ghost .ripple { background: rgba(255, 74, 43, .18); }
@keyframes ripple { to { transform: scale(2.6); opacity: 0; } }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(255, 255, 255, .82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: box-shadow .3s, border-color .3s, background .3s;
}
.site-header.scrolled { border-bottom-color: var(--line); box-shadow: 0 4px 24px rgba(25, 27, 43, .06); background: rgba(255, 255, 255, .92); }
.header-inner { height: 100%; display: flex; align-items: center; gap: 28px; }

.brand { display: inline-flex; align-items: center; gap: 11px; flex-shrink: 0; }
.brand-mark {
  width: 42px; height: 42px;
  border-radius: 12px;
  background: var(--brand-grad);
  color: #fff;
  font-size: 20px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 5px 14px rgba(255, 74, 43, .35);
  overflow: hidden;
  transition: transform .3s var(--ease-spring);
}
.brand-mark img { width: 100%; height: 100%; object-fit: cover; object-position: left center; }
.brand:hover .brand-mark { transform: rotate(-6deg) scale(1.06); }
.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-text strong { font-size: 17.5px; font-weight: 800; letter-spacing: .5px; }
.brand-text small { font-size: 11px; color: var(--muted); letter-spacing: 1.5px; }

.site-nav { display: flex; align-items: center; gap: 6px; margin-inline: auto; }
.nav-link {
  position: relative;
  padding: 9px 16px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink-2);
  border-radius: 10px;
  transition: color .25s, background .25s;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 50%; bottom: 3px;
  width: 0; height: 3px;
  border-radius: 2px;
  background: var(--brand-grad);
  transform: translateX(-50%);
  transition: width .3s var(--ease-spring);
}
.nav-link:hover { color: var(--brand); }
.nav-link:hover::after { width: 22px; }
.nav-link.active { color: var(--brand); }
.nav-link.active::after { width: 22px; }

.header-actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }

.nav-toggle {
  display: none;
  width: 42px; height: 42px;
  border: none;
  border-radius: 11px;
  background: #fff;
  border: 1.5px solid var(--line);
  color: var(--ink-2);
  font-size: 20px;
  cursor: pointer;
  transition: border-color .25s, color .25s;
}
.nav-toggle:hover { border-color: var(--brand); color: var(--brand); }

.nav-mask {
  position: fixed; inset: 0;
  background: rgba(25, 27, 43, .45);
  backdrop-filter: blur(3px);
  z-index: 98;
  opacity: 0; visibility: hidden;
  transition: opacity .3s, visibility .3s;
}
.nav-mask.show { opacity: 1; visibility: visible; }

/* ---------- Hero ---------- */
.site-main { padding-top: var(--header-h); }

.hero { position: relative; padding: 72px 0 64px; overflow: hidden; }
.hero::before {
  content: "";
  position: absolute;
  top: -180px; right: -120px;
  width: 640px; height: 640px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 138, 42, .16), transparent 65%);
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  bottom: -220px; left: -160px;
  width: 560px; height: 560px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(122, 92, 255, .12), transparent 65%);
  pointer-events: none;
}
.hero-inner { position: relative; display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 16px;
  background: #fff;
  border: 1.5px solid #FFE0D6;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  color: var(--brand);
  box-shadow: var(--shadow-sm);
  margin-bottom: 22px;
}
.hero-badge .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--brand); animation: pulse 1.8s infinite; }
@keyframes pulse { 0%, 100% { box-shadow: 0 0 0 0 rgba(255, 74, 43, .45); } 50% { box-shadow: 0 0 0 6px rgba(255, 74, 43, 0); } }

.hero h1 { font-size: 52px; line-height: 1.22; font-weight: 800; letter-spacing: 1px; margin-bottom: 20px; }
.grad-text { background: var(--brand-grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; color: transparent; }
.hero-desc { font-size: 16.5px; color: var(--muted); max-width: 520px; margin-bottom: 32px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 44px; }

.hero-stats { display: flex; gap: 0; }
.hero-stat { padding-right: 36px; margin-right: 36px; border-right: 1px solid var(--line); }
.hero-stat:last-child { border-right: none; margin-right: 0; padding-right: 0; }
.hero-stat b { font-size: 26px; font-weight: 800; display: block; line-height: 1.2; }
.hero-stat span { font-size: 13px; color: var(--muted); }

/* Hero 视觉 */
.hero-visual { position: relative; height: 560px; }
.hero-glow {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 480px; height: 480px;
  border-radius: 50%;
  background: conic-gradient(from 0deg, rgba(255, 74, 43, .14), rgba(255, 138, 42, .1), rgba(122, 92, 255, .12), rgba(255, 74, 43, .14));
  filter: blur(30px);
  animation: spin 24s linear infinite;
}
@keyframes spin { to { transform: translate(-50%, -50%) rotate(360deg); } }

.phone {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 292px;
  background: #fff;
  border-radius: 38px;
  border: 8px solid var(--ink);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  animation: phoneFloat 7s ease-in-out infinite;
}
@keyframes phoneFloat { 0%, 100% { transform: translate(-50%, -50%) translateY(0); } 50% { transform: translate(-50%, -50%) translateY(-14px); } }
.phone-screen { padding: 18px 16px 22px; }
.phone-status { display: flex; justify-content: space-between; font-size: 11px; color: var(--muted); margin-bottom: 14px; padding: 0 4px; }
.phone-search {
  display: flex; align-items: center; gap: 7px;
  background: var(--bg);
  border-radius: 100px;
  padding: 9px 14px;
  font-size: 12.5px;
  color: var(--muted);
  margin-bottom: 14px;
}
.phone-chips { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 14px; }
.phone-chip { font-size: 11px; padding: 4px 10px; border-radius: 100px; background: var(--brand-soft); color: var(--brand); font-weight: 600; }
.phone-chip:nth-child(2) { background: #EEF4FF; color: var(--blue); }
.phone-chip:nth-child(3) { background: #EAFBF4; color: var(--teal); }
.phone-chip:nth-child(4) { background: #F3EFFF; color: var(--purple); }
.phone-banner {
  border-radius: 14px;
  background: var(--brand-grad);
  color: #fff;
  padding: 14px 16px;
  margin-bottom: 14px;
  position: relative;
  overflow: hidden;
}
.phone-banner::after { content: ""; position: absolute; right: -18px; top: -18px; width: 74px; height: 74px; border-radius: 50%; background: rgba(255, 255, 255, .16); }
.phone-banner b { font-size: 14.5px; display: block; }
.phone-banner span { font-size: 11px; opacity: .85; }
.phone-banner .coupon { display: inline-block; margin-top: 8px; background: #fff; color: var(--brand); font-size: 11px; font-weight: 700; padding: 3px 10px; border-radius: 100px; }
.phone-list { display: grid; gap: 9px; }
.phone-item { display: flex; align-items: center; gap: 10px; background: var(--bg); border-radius: 12px; padding: 9px 11px; }
.phone-item .pi-icon { width: 34px; height: 34px; border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 16px; color: #fff; }
.phone-item b { font-size: 12.5px; display: block; line-height: 1.3; }
.phone-item small { font-size: 10.5px; color: var(--muted); }
.phone-item .pi-price { margin-left: auto; font-size: 12px; font-weight: 800; color: var(--brand); }

.float-card {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 10px;
  background: #fff;
  border-radius: 15px;
  padding: 11px 15px;
  box-shadow: var(--shadow-md);
  animation: floaty 5.5s ease-in-out infinite;
  z-index: 2;
}
.float-card .fc-icon { width: 38px; height: 38px; border-radius: 11px; display: flex; align-items: center; justify-content: center; font-size: 18px; color: #fff; }
.float-card b { font-size: 13.5px; display: block; line-height: 1.3; }
.float-card small { font-size: 11px; color: var(--muted); }
.float-card.fc1 { top: 58px; left: -6px; transform: rotate(-5deg); animation-delay: -1s; }
.float-card.fc2 { top: 128px; right: -14px; transform: rotate(4deg); animation-delay: -2.5s; }
.float-card.fc3 { bottom: 118px; left: -18px; transform: rotate(4deg); animation-delay: -4s; }
.float-card.fc4 { bottom: 52px; right: 4px; transform: rotate(-4deg); animation-delay: -3s; }
@keyframes floaty { 0%, 100% { margin-top: 0; } 50% { margin-top: -13px; } }

/* ---------- 品牌滚动栏 ---------- */
.hero-photo { position: relative; z-index: 2; width: min(100%, 430px); margin: 0 auto; border-radius: 30px; overflow: hidden; border: 6px solid #fff; box-shadow: 0 30px 70px rgba(25, 27, 43, .22); }
.hero-photo img { display: block; width: 100%; height: auto; }
.marquee-section { padding: 26px 0 8px; }
.marquee { overflow: hidden; position: relative; -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); }
.marquee-track { display: flex; gap: 14px; width: max-content; animation: marquee 32s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
@keyframes marquee { to { transform: translateX(-50%); } }
.brand-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 100px;
  padding: 9px 20px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink-2);
  white-space: nowrap;
  box-shadow: var(--shadow-sm);
}
.brand-pill i { width: 8px; height: 8px; border-radius: 50%; background: var(--brand); }

/* ---------- 通用区块 ---------- */
.section { padding: 72px 0; }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 48px; }
.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 700;
  color: var(--brand);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section-head h2 { font-size: 34px; font-weight: 800; letter-spacing: 1px; margin-bottom: 14px; }
.section-head p { font-size: 15.5px; color: var(--muted); }

.reveal { opacity: 0; transform: translateY(34px); transition: opacity .7s ease, transform .7s var(--ease-spring); }
.reveal.in { opacity: 1; transform: none; }
.reveal-d1 { transition-delay: .08s; }
.reveal-d2 { transition-delay: .16s; }
.reveal-d3 { transition-delay: .24s; }
.reveal-d4 { transition-delay: .32s; }
.reveal-d5 { transition-delay: .4s; }
.reveal-d6 { transition-delay: .48s; }

/* ---------- 品类网格 ---------- */
.category-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.category-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 26px 24px;
  box-shadow: var(--shadow-sm);
  border: 1px solid transparent;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: transform .35s var(--ease-spring), box-shadow .35s, border-color .35s;
}
.category-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: var(--card-color, var(--brand));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s var(--ease-spring);
}
.category-card:hover { transform: translateY(-7px); box-shadow: var(--shadow-lg); border-color: var(--line); }
.category-card:hover::before { transform: scaleX(1); }
.category-card:active { transform: translateY(-3px) scale(.98); }
.cat-icon {
  width: 58px; height: 58px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 27px;
  color: #fff;
  margin-bottom: 18px;
  background: var(--card-color, var(--brand));
  box-shadow: 0 8px 20px rgba(25, 27, 43, .16);
  transition: transform .35s var(--ease-spring);
}
.category-card:hover .cat-icon { transform: rotate(-8deg) scale(1.08); }
.category-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; display: flex; align-items: center; gap: 8px; }
.category-card h3 .more { margin-left: auto; font-size: 15px; color: var(--brand); opacity: 0; transform: translateX(-6px); transition: opacity .3s, transform .3s; }
.category-card:hover h3 .more { opacity: 1; transform: none; }
.category-card p { font-size: 13.5px; color: var(--muted); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; min-height: 46px; }

/* ---------- 功能预览卡 ---------- */
.feature-preview-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.feature-preview {
  background: #fff;
  border-radius: var(--radius);
  padding: 28px 26px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--line);
  transition: transform .35s var(--ease-spring), box-shadow .35s;
}
.feature-preview:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.fp-head { display: flex; align-items: center; gap: 14px; margin-bottom: 14px; }
.fp-icon { width: 48px; height: 48px; border-radius: 14px; display: flex; align-items: center; justify-content: center; font-size: 22px; color: #fff; flex-shrink: 0; }
.feature-preview h3 { font-size: 16.5px; font-weight: 700; }
.feature-preview h3 small { display: block; font-size: 12px; color: var(--muted); font-weight: 500; margin-top: 2px; }
.feature-preview p { font-size: 13.5px; color: var(--muted); margin-bottom: 16px; }
.fp-link { display: inline-flex; align-items: center; gap: 5px; font-size: 13.5px; font-weight: 600; color: var(--brand); transition: gap .25s; }
.fp-link:hover { gap: 10px; }

/* ---------- 数据带 ---------- */
.stats-band {
  background: linear-gradient(135deg, #1B1E33 0%, #2A2D4A 100%);
  border-radius: 28px;
  padding: 52px 40px;
  position: relative;
  overflow: hidden;
}
.stats-band::before {
  content: "";
  position: absolute;
  top: -60%; left: -10%;
  width: 420px; height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 74, 43, .22), transparent 65%);
}
.stats-band::after {
  content: "";
  position: absolute;
  bottom: -60%; right: -6%;
  width: 420px; height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(122, 92, 255, .2), transparent 65%);
}
.stats-grid { position: relative; display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
.stat-item b { font-size: 44px; font-weight: 800; background: linear-gradient(135deg, #FFD666, #FF8A2A); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; color: transparent; display: block; line-height: 1.15; }
.stat-item span { color: rgba(255, 255, 255, .68); font-size: 14px; }

/* ---------- 套餐 ---------- */
.package-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; align-items: stretch; }
.package-card {
  background: #fff;
  border-radius: 22px;
  padding: 32px 28px;
  box-shadow: var(--shadow-sm);
  border: 2px solid transparent;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform .35s var(--ease-spring), box-shadow .35s, border-color .35s;
}
.package-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.package-card.hot { border-color: var(--brand); }
.package-card.hot::after {
  content: "";
  position: absolute; inset: 0;
  border-radius: 22px;
  background: linear-gradient(180deg, rgba(255, 74, 43, .05), transparent 40%);
  pointer-events: none;
}
.pk-badge {
  position: absolute;
  top: -14px; left: 50%;
  transform: translateX(-50%);
  background: var(--brand-grad);
  color: #fff;
  font-size: 12.5px;
  font-weight: 700;
  padding: 5px 16px;
  border-radius: 100px;
  box-shadow: 0 6px 16px rgba(255, 74, 43, .35);
  white-space: nowrap;
}
.package-card h3 { font-size: 21px; font-weight: 800; margin-bottom: 6px; }
.pk-sub { font-size: 13px; color: var(--muted); margin-bottom: 22px; }
.pk-price { display: flex; align-items: baseline; gap: 6px; margin-bottom: 24px; }
.pk-price .cur { font-size: 17px; font-weight: 700; color: var(--brand); }
.pk-price .num { font-size: 44px; font-weight: 800; line-height: 1; letter-spacing: -1px; }
.pk-price .unit { font-size: 13.5px; color: var(--muted); }
.pk-price .origin { font-size: 13px; color: #B4B9CF; text-decoration: line-through; margin-left: 4px; }
.pk-free { font-size: 38px; font-weight: 800; line-height: 1; background: linear-gradient(135deg, #1FC78D, #0FB5A6); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; color: #1FC78D; letter-spacing: 1px; }
.pk-features { display: grid; gap: 11px; margin-bottom: 28px; flex: 1; }
.pk-features li { display: flex; align-items: flex-start; gap: 9px; font-size: 13.8px; color: var(--ink-2); }
.pk-features .ck {
  width: 19px; height: 19px;
  border-radius: 50%;
  background: #EAFBF4;
  color: var(--green);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  flex-shrink: 0;
  margin-top: 2px;
}

/* ---------- 动态卡片 ---------- */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform .35s var(--ease-spring), box-shadow .35s;
  display: block;
}
.news-card:hover { transform: translateY(-7px); box-shadow: var(--shadow-md); }
.news-cover { position: relative; aspect-ratio: 16 / 10; overflow: hidden; }
.news-cover img, .news-cover .cover-fallback { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.news-card:hover .news-cover img, .news-card:hover .cover-fallback { transform: scale(1.06); }
.cover-fallback { display: flex; align-items: center; justify-content: center; font-size: 44px; color: #fff; background: var(--brand-grad); }
.news-cat {
  position: absolute;
  left: 14px; top: 14px;
  background: rgba(255, 255, 255, .92);
  color: var(--brand);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 100px;
  backdrop-filter: blur(6px);
}
.news-body { padding: 20px 22px 22px; }
.news-body h3 { font-size: 16px; font-weight: 700; line-height: 1.5; margin-bottom: 10px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; min-height: 48px; }
.news-body p { font-size: 13px; color: var(--muted); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 14px; }
.news-meta { display: flex; align-items: center; gap: 14px; font-size: 12.5px; color: #A2A8C0; }
.news-meta span { display: inline-flex; align-items: center; gap: 5px; }

/* ---------- CTA 横幅 ---------- */
.cta-band {
  border-radius: 28px;
  background: var(--brand-grad);
  padding: 64px 48px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.cta-band::before, .cta-band::after { content: ""; position: absolute; border-radius: 50%; border: 2px solid rgba(255, 255, 255, .22); }
.cta-band::before { width: 300px; height: 300px; top: -140px; left: -90px; }
.cta-band::after { width: 220px; height: 220px; bottom: -110px; right: -60px; }
.cta-band h2 { font-size: 32px; font-weight: 800; margin-bottom: 14px; position: relative; }
.cta-band p { opacity: .9; font-size: 15.5px; margin-bottom: 30px; position: relative; }
.cta-band .btn { position: relative; }
.cta-band .btn-white { background: #fff; color: var(--brand); box-shadow: 0 10px 28px rgba(0, 0, 0, .18); }
.cta-band .btn-white:hover { transform: translateY(-2px); }
.cta-band .btn-line { background: rgba(255, 255, 255, .16); color: #fff; border: 1.5px solid rgba(255, 255, 255, .5); }
.cta-band .btn-line:hover { background: rgba(255, 255, 255, .26); }

/* ---------- 页脚 ---------- */
.site-footer { background: #171A2B; color: rgba(255, 255, 255, .72); margin-top: 72px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 44px; padding: 60px 0 44px; }
.footer-brand p { font-size: 13.5px; line-height: 1.8; margin: 18px 0 20px; color: rgba(255, 255, 255, .55); }
.footer-logo .brand-text strong { color: #fff; }
.footer-logo .brand-text small { color: rgba(255, 255, 255, .45); }
.footer-qr { display: flex; align-items: center; gap: 12px; font-size: 12.5px; color: rgba(255, 255, 255, .55); }
.footer-qr img { width: 84px; height: 84px; border-radius: 10px; background: #fff; }
.qr-placeholder {
  width: 84px; height: 84px;
  border-radius: 10px;
  border: 1.5px dashed rgba(255, 255, 255, .3);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  font-size: 17px;
  color: rgba(255, 255, 255, .4);
}
.qr-placeholder span { font-size: 10px; }
.footer-col h4 { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 20px; }
.footer-col a, .footer-col span { display: flex; align-items: center; gap: 7px; font-size: 13.5px; color: rgba(255, 255, 255, .58); margin-bottom: 13px; transition: color .25s, transform .25s; }
.footer-col a:hover { color: #fff; transform: translateX(4px); }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .09);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 12.5px;
  color: rgba(255, 255, 255, .42);
}
.footer-icp a:hover { color: #fff; }

/* ---------- 浮动按钮与咨询面板 ---------- */
.fab-group { position: fixed; right: 22px; bottom: 26px; z-index: 96; display: flex; flex-direction: column; gap: 12px; }
.fab {
  width: 52px; height: 52px;
  border-radius: 50%;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  transition: transform .3s var(--ease-spring), box-shadow .3s, opacity .3s, visibility .3s;
  position: relative;
}
.fab-chat { background: var(--brand-grad); color: #fff; box-shadow: 0 10px 26px rgba(255, 74, 43, .42); }
.fab-chat:hover { transform: scale(1.1) rotate(6deg); }
.fab-pulse { position: absolute; inset: 0; border-radius: 50%; border: 2px solid var(--brand); animation: fabPulse 2.2s infinite; }
@keyframes fabPulse { 0% { transform: scale(1); opacity: .7; } 100% { transform: scale(1.55); opacity: 0; } }
.fab-top { background: #fff; color: var(--ink-2); box-shadow: var(--shadow-md); font-size: 19px; opacity: 0; visibility: hidden; transform: translateY(10px); }
.fab-top.show { opacity: 1; visibility: visible; transform: none; }
.fab-top:hover { color: var(--brand); transform: translateY(-3px); }

.chat-panel {
  position: fixed;
  right: 22px; bottom: 96px;
  width: 330px;
  max-width: calc(100vw - 32px);
  background: #fff;
  border-radius: 20px;
  box-shadow: var(--shadow-lg);
  z-index: 97;
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px) scale(.96);
  transform-origin: bottom right;
  transition: opacity .3s, visibility .3s, transform .35s var(--ease-spring);
}
.chat-panel.open { opacity: 1; visibility: visible; transform: none; }
.chat-head { background: var(--brand-grad); color: #fff; padding: 16px 18px; display: flex; align-items: center; gap: 11px; }
.chat-head-icon { width: 36px; height: 36px; border-radius: 11px; background: rgba(255, 255, 255, .2); display: flex; align-items: center; justify-content: center; font-size: 18px; }
.chat-head strong { font-size: 15px; display: block; line-height: 1.3; }
.chat-head small { font-size: 11.5px; opacity: .85; }
.chat-close { margin-left: auto; background: rgba(255, 255, 255, .18); border: none; color: #fff; width: 30px; height: 30px; border-radius: 9px; cursor: pointer; font-size: 15px; display: flex; align-items: center; justify-content: center; transition: background .25s; }
.chat-close:hover { background: rgba(255, 255, 255, .32); }
.chat-body { padding: 16px 18px; display: grid; gap: 14px; max-height: 380px; overflow-y: auto; }
.chat-row { display: flex; align-items: flex-start; gap: 12px; }
.chat-row-icon { width: 36px; height: 36px; border-radius: 11px; background: var(--brand-soft); color: var(--brand); display: flex; align-items: center; justify-content: center; font-size: 17px; flex-shrink: 0; }
.chat-row small { display: block; font-size: 11.5px; color: var(--muted); margin-bottom: 2px; }
.chat-row a, .chat-row p { font-size: 14px; font-weight: 600; color: var(--ink); }
.chat-row p { font-weight: 500; line-height: 1.6; }
.chat-copy { background: none; border: none; padding: 0; font-size: 14px; font-weight: 600; color: var(--ink); cursor: pointer; display: inline-flex; align-items: center; gap: 6px; font-family: inherit; }
.chat-copy:hover { color: var(--brand); }
.chat-qr { display: flex; flex-direction: column; gap: 6px; }
.chat-qr img, .chat-qr .qr-placeholder { width: 150px; height: 150px; border-radius: 12px; }
.chat-qr .qr-placeholder { border: 1.5px dashed var(--line); color: #B4B9CF; background: var(--bg); font-size: 22px; }

/* ---------- 功能详情抽屉 ---------- */
.feature-drawer-mask { position: fixed; inset: 0; background: rgba(25, 27, 43, .45); backdrop-filter: blur(3px); z-index: 99; opacity: 0; visibility: hidden; transition: opacity .3s, visibility .3s; }
.feature-drawer-mask.show { opacity: 1; visibility: visible; }
.feature-drawer {
  position: fixed;
  top: 0; right: 0; bottom: 0;
  width: 460px;
  max-width: 92vw;
  background: #fff;
  z-index: 100;
  box-shadow: -18px 0 50px rgba(25, 27, 43, .18);
  transform: translateX(105%);
  transition: transform .45s var(--ease-spring);
  display: flex;
  flex-direction: column;
}
.feature-drawer.open { transform: none; }
.drawer-close { position: absolute; top: 18px; right: 18px; width: 36px; height: 36px; border: none; border-radius: 10px; background: var(--bg); color: var(--ink-2); cursor: pointer; font-size: 16px; z-index: 2; display: flex; align-items: center; justify-content: center; transition: background .25s, color .25s; }
.drawer-close:hover { background: var(--brand-soft); color: var(--brand); }
.drawer-content { overflow-y: auto; padding: 36px 32px; }
.drawer-hero { border-radius: 16px; padding: 30px 26px; color: #fff; margin-bottom: 24px; position: relative; overflow: hidden; }
.drawer-hero::after { content: ""; position: absolute; right: -30px; bottom: -40px; width: 130px; height: 130px; border-radius: 50%; background: rgba(255, 255, 255, .14); }
.drawer-hero .dh-icon { width: 54px; height: 54px; border-radius: 15px; background: rgba(255, 255, 255, .22); display: flex; align-items: center; justify-content: center; font-size: 26px; margin-bottom: 16px; }
.drawer-hero h3 { font-size: 23px; font-weight: 800; margin-bottom: 4px; }
.drawer-hero p { font-size: 13.5px; opacity: .9; }
.drawer-summary { font-size: 14.5px; color: var(--ink-2); line-height: 1.9; margin-bottom: 22px; }
.drawer-prose { font-size: 14px; color: var(--ink-2); line-height: 1.9; }
.drawer-prose p { margin-bottom: 12px; }
.drawer-prose ul { display: grid; gap: 8px; margin-bottom: 12px; }
.drawer-prose li { padding-left: 20px; position: relative; }
.drawer-prose li::before { content: ""; position: absolute; left: 2px; top: .68em; width: 7px; height: 7px; border-radius: 2px; background: var(--brand); }
.drawer-actions { display: flex; gap: 12px; margin-top: 26px; }

/* ---------- 页面 Hero（子页面） ---------- */
.page-hero { padding: 64px 0 48px; position: relative; overflow: hidden; }
.page-hero::before { content: ""; position: absolute; top: -200px; right: -100px; width: 520px; height: 520px; border-radius: 50%; background: radial-gradient(circle, rgba(255, 138, 42, .14), transparent 65%); }
.page-hero-inner { position: relative; text-align: center; max-width: 760px; margin: 0 auto; }
.page-hero h1 { font-size: 40px; font-weight: 800; letter-spacing: 1px; margin-bottom: 16px; }
.page-hero p { font-size: 15.5px; color: var(--muted); }
.breadcrumb { display: flex; justify-content: center; gap: 8px; font-size: 13px; color: var(--muted); margin-bottom: 18px; }
.breadcrumb a:hover { color: var(--brand); }
.breadcrumb .sep { color: #C9CEDF; }

/* ---------- 功能介绍页 ---------- */
.feature-block { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; padding: 40px 0; }
.feature-block:nth-child(even) .fb-visual { order: -1; }
.fb-text .fb-icon { width: 62px; height: 62px; border-radius: 17px; display: flex; align-items: center; justify-content: center; font-size: 29px; color: #fff; margin-bottom: 20px; box-shadow: 0 10px 24px rgba(25, 27, 43, .18); }
.fb-text h2 { font-size: 27px; font-weight: 800; margin-bottom: 6px; }
.fb-text .fb-sub { font-size: 14px; color: var(--brand); font-weight: 600; margin-bottom: 16px; }
.fb-text .fb-desc { font-size: 14.5px; color: var(--muted); line-height: 1.9; margin-bottom: 20px; }
.fb-prose { font-size: 14px; color: var(--ink-2); line-height: 1.9; }
.fb-prose p { margin-bottom: 10px; }
.fb-prose ul { display: grid; gap: 8px; margin-bottom: 10px; }
.fb-prose li { padding-left: 22px; position: relative; }
.fb-prose li::before { content: "✓"; position: absolute; left: 0; color: var(--green); font-weight: 800; }
.fb-visual { position: relative; height: 340px; display: flex; align-items: center; justify-content: center; }
.fb-visual-bg { position: absolute; width: 300px; height: 300px; border-radius: 44px; transform: rotate(-8deg); opacity: .14; }
.fb-visual-main {
  position: relative;
  width: 190px; height: 190px;
  border-radius: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 84px;
  color: #fff;
  box-shadow: 0 22px 50px rgba(25, 27, 43, .22);
  animation: phoneFloat2 6s ease-in-out infinite;
}
@keyframes phoneFloat2 { 0%, 100% { transform: translateY(0) rotate(-3deg); } 50% { transform: translateY(-14px) rotate(3deg); } }
.fb-chip {
  position: absolute;
  background: #fff;
  border-radius: 12px;
  padding: 9px 15px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--ink-2);
  box-shadow: var(--shadow-md);
  animation: floaty 5s ease-in-out infinite;
}
.fb-chip.c1 { top: 26px; left: 8%; animation-delay: -1s; }
.fb-chip.c2 { top: 44%; right: 2%; animation-delay: -2.5s; }
.fb-chip.c3 { bottom: 30px; left: 14%; animation-delay: -4s; }
.fb-chip.c4 { bottom: 62px; right: 12%; animation-delay: -3s; }

.why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.why-card { background: #fff; border-radius: var(--radius); padding: 30px 26px; box-shadow: var(--shadow-sm); border: 1px solid var(--line); text-align: center; transition: transform .35s var(--ease-spring), box-shadow .35s; }
.why-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.why-card .wy-icon { width: 56px; height: 56px; border-radius: 16px; margin: 0 auto 16px; display: flex; align-items: center; justify-content: center; font-size: 25px; color: #fff; }
.why-card h3 { font-size: 16.5px; font-weight: 700; margin-bottom: 8px; }
.why-card p { font-size: 13.5px; color: var(--muted); }

/* ---------- 套餐页 ---------- */
.billing-toggle { display: flex; justify-content: center; margin-bottom: 44px; }
.billing-switch { display: inline-flex; background: #fff; border-radius: 100px; padding: 5px; box-shadow: var(--shadow-sm); border: 1px solid var(--line); position: relative; }
.billing-switch button { border: none; background: none; padding: 9px 26px; border-radius: 100px; font-size: 14px; font-weight: 600; color: var(--muted); cursor: pointer; position: relative; z-index: 1; transition: color .3s; font-family: inherit; }
.billing-switch button.active { color: #fff; }
.billing-slider { position: absolute; top: 5px; bottom: 5px; left: 5px; width: calc(50% - 5px); background: var(--brand-grad); border-radius: 100px; transition: transform .35s var(--ease-spring); box-shadow: 0 4px 12px rgba(255, 74, 43, .3); }
.billing-switch.yearly .billing-slider { transform: translateX(100%); }
.price-num { display: inline-block; transition: transform .3s var(--ease-spring), opacity .3s; }
.price-num.flip { animation: priceFlip .45s var(--ease-spring); }
@keyframes priceFlip { 0% { transform: translateY(14px); opacity: 0; } 100% { transform: none; opacity: 1; } }

.compare-table-wrap { overflow-x: auto; background: #fff; border-radius: 20px; box-shadow: var(--shadow-sm); border: 1px solid var(--line); }
.compare-table { width: 100%; border-collapse: collapse; min-width: 640px; }
.compare-table th, .compare-table td { padding: 15px 20px; text-align: center; font-size: 14px; border-bottom: 1px solid var(--line); }
.compare-table th:first-child, .compare-table td:first-child { text-align: left; font-weight: 600; color: var(--ink-2); }
.compare-table thead th { background: #FAFBFE; font-size: 15px; font-weight: 700; color: var(--ink); }
.compare-table tbody tr:last-child td { border-bottom: none; }
.compare-table tbody tr:hover { background: #FAFBFE; }
.cmp-yes { color: var(--green); font-weight: 800; font-size: 16px; }
.cmp-no { color: #C9CEDF; }

.faq-list { max-width: 820px; margin: 0 auto; display: grid; gap: 14px; }
.faq-item { background: #fff; border-radius: 15px; border: 1px solid var(--line); overflow: hidden; transition: box-shadow .3s, border-color .3s; }
.faq-item.open { box-shadow: var(--shadow-md); border-color: #FFD9CE; }
.faq-q { width: 100%; display: flex; align-items: center; gap: 12px; padding: 19px 22px; background: none; border: none; cursor: pointer; font-size: 15px; font-weight: 600; color: var(--ink); text-align: left; font-family: inherit; }
.faq-q .fq-icon { margin-left: auto; font-size: 17px; color: var(--muted); transition: transform .35s var(--ease-spring), color .3s; }
.faq-item.open .faq-q .fq-icon { transform: rotate(180deg); color: var(--brand); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .4s ease; }
.faq-a-inner { padding: 0 22px 20px; font-size: 14px; color: var(--muted); line-height: 1.9; }

/* ---------- 动态列表页 ---------- */
.news-layout { display: grid; grid-template-columns: 1fr 320px; gap: 36px; align-items: start; }
.news-chips { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 26px; }
.news-chip { padding: 8px 18px; border-radius: 100px; background: #fff; border: 1.5px solid var(--line); font-size: 13.5px; font-weight: 600; color: var(--ink-2); cursor: pointer; transition: all .25s; font-family: inherit; }
.news-chip:hover { border-color: var(--brand); color: var(--brand); }
.news-chip.active { background: var(--brand-grad); border-color: transparent; color: #fff; box-shadow: 0 5px 14px rgba(255, 74, 43, .3); }
.news-list { display: grid; gap: 20px; }
.news-row { display: grid; grid-template-columns: 230px 1fr; gap: 22px; background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm); transition: transform .35s var(--ease-spring), box-shadow .35s; }
.news-row:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.news-row .news-cover { aspect-ratio: auto; min-height: 168px; }
.news-row .news-body { padding: 22px 24px; }
.news-row .news-body h3 { min-height: auto; -webkit-line-clamp: 2; font-size: 17px; }
.news-row .news-body p { -webkit-line-clamp: 2; margin-bottom: 16px; }
.news-row .read-more { font-size: 13px; font-weight: 600; color: var(--brand); display: inline-flex; align-items: center; gap: 5px; transition: gap .25s; }
.news-row:hover .read-more { gap: 9px; }

.side-card { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow-sm); border: 1px solid var(--line); padding: 24px; margin-bottom: 22px; }
.side-card h3 { font-size: 16.5px; font-weight: 700; margin-bottom: 18px; display: flex; align-items: center; gap: 8px; }
.side-card h3::before { content: ""; width: 4px; height: 17px; border-radius: 2px; background: var(--brand-grad); }
.hot-list { display: grid; gap: 14px; }
.hot-item { display: flex; gap: 12px; align-items: center; }
.hot-rank { width: 22px; height: 22px; border-radius: 7px; background: var(--bg); color: var(--muted); font-size: 12px; font-weight: 800; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.hot-item:nth-child(1) .hot-rank { background: var(--brand-grad); color: #fff; }
.hot-item:nth-child(2) .hot-rank { background: #FFE0D6; color: var(--brand); }
.hot-item:nth-child(3) .hot-rank { background: #FFF3D6; color: #D48806; }
.hot-item a { font-size: 13.8px; color: var(--ink-2); line-height: 1.55; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; transition: color .25s; }
.hot-item a:hover { color: var(--brand); }
.side-cats { display: grid; gap: 4px; }
.side-cats a { display: flex; justify-content: space-between; padding: 10px 12px; border-radius: 10px; font-size: 13.8px; color: var(--ink-2); transition: background .25s, color .25s; }
.side-cats a:hover { background: var(--brand-soft); color: var(--brand); }
.side-cats a span { color: #A2A8C0; font-size: 12.5px; }
.side-cta { background: var(--brand-grad); color: #fff; border: none; }
.side-cta h3 { color: #fff; }
.side-cta h3::before { background: #fff; }
.side-cta p { font-size: 13px; opacity: .9; margin-bottom: 16px; }

.pagination { display: flex; justify-content: center; gap: 8px; margin-top: 40px; }
.page-btn { min-width: 40px; height: 40px; padding: 0 12px; border-radius: 11px; background: #fff; border: 1.5px solid var(--line); display: inline-flex; align-items: center; justify-content: center; font-size: 14px; font-weight: 600; color: var(--ink-2); transition: all .25s; }
.page-btn:hover { border-color: var(--brand); color: var(--brand); }
.page-btn.active { background: var(--brand-grad); border-color: transparent; color: #fff; box-shadow: 0 5px 14px rgba(255, 74, 43, .3); }
.page-btn.disabled { opacity: .45; pointer-events: none; }
.page-dots { display: inline-flex; align-items: center; color: var(--muted); padding: 0 4px; }

/* ---------- 文章详情 ---------- */
.article-layout { max-width: 880px; margin: 0 auto; }
.article-card { background: #fff; border-radius: 22px; box-shadow: var(--shadow-sm); border: 1px solid var(--line); padding: 44px 48px; }
.article-head { text-align: center; margin-bottom: 30px; }
.article-head .news-cat-tag { display: inline-flex; background: var(--brand-soft); color: var(--brand); font-size: 12.5px; font-weight: 700; padding: 5px 14px; border-radius: 100px; margin-bottom: 16px; }
.article-head h1 { font-size: 30px; font-weight: 800; line-height: 1.45; margin-bottom: 16px; }
.article-meta { display: flex; justify-content: center; gap: 22px; font-size: 13px; color: #A2A8C0; }
.article-meta span { display: inline-flex; align-items: center; gap: 6px; }
.article-cover { border-radius: 16px; overflow: hidden; margin-bottom: 32px; aspect-ratio: 16 / 8; }
.article-cover img { width: 100%; height: 100%; object-fit: cover; }
.prose { font-size: 15.5px; line-height: 2; color: var(--ink-2); }
.prose p { margin-bottom: 18px; }
.prose h2 { font-size: 22px; font-weight: 800; color: var(--ink); margin: 34px 0 14px; padding-left: 14px; border-left: 4px solid var(--brand); }
.prose h3 { font-size: 18px; font-weight: 700; color: var(--ink); margin: 26px 0 12px; }
.prose ul, .prose ol { margin-bottom: 18px; display: grid; gap: 9px; }
.prose ul li { padding-left: 22px; position: relative; }
.prose ul li::before { content: ""; position: absolute; left: 2px; top: .72em; width: 7px; height: 7px; border-radius: 2px; background: var(--brand); }
.prose ol { counter-reset: olc; }
.prose ol li { padding-left: 28px; position: relative; counter-increment: olc; }
.prose ol li::before { content: counter(olc); position: absolute; left: 0; top: .28em; width: 19px; height: 19px; border-radius: 6px; background: var(--brand-soft); color: var(--brand); font-size: 12px; font-weight: 700; display: flex; align-items: center; justify-content: center; }
.prose blockquote { border-left: 4px solid var(--gold); background: #FFFBF2; border-radius: 0 12px 12px 0; padding: 16px 20px; margin: 20px 0; font-size: 14.5px; color: #8A6D1F; }
.prose a { color: var(--brand); font-weight: 600; border-bottom: 1px solid rgba(255, 74, 43, .35); }
.prose img { border-radius: 14px; margin: 20px auto; box-shadow: var(--shadow-sm); }
.prose strong { color: var(--ink); }
.prose table { width: 100%; border-collapse: collapse; margin: 20px 0; font-size: 14px; }
.prose th, .prose td { border: 1px solid var(--line); padding: 10px 14px; text-align: left; }
.prose th { background: #FAFBFE; font-weight: 700; }
.prose code { background: #F0F1F6; border-radius: 6px; padding: 2px 7px; font-size: 13.5px; color: #D6336C; font-family: Consolas, Monaco, monospace; }
.prose pre { background: #1B1E33; color: #E6E8F2; border-radius: 14px; padding: 18px 20px; overflow-x: auto; margin: 20px 0; font-size: 13.5px; line-height: 1.7; }
.prose pre code { background: none; color: inherit; padding: 0; }
.prose hr { border: none; border-top: 1px solid var(--line); margin: 30px 0; }

.article-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 26px; }
.article-nav a { background: #fff; border-radius: 15px; border: 1px solid var(--line); padding: 18px 20px; transition: border-color .25s, transform .25s; }
.article-nav a:hover { border-color: var(--brand); transform: translateY(-3px); }
.article-nav small { display: block; font-size: 12px; color: var(--muted); margin-bottom: 6px; }
.article-nav span { font-size: 14px; font-weight: 600; color: var(--ink-2); display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; }
.article-nav .next { text-align: right; }

/* ---------- 关于我们 ---------- */
.about-intro { display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; }
.about-intro-text h2 { font-size: 30px; font-weight: 800; margin-bottom: 18px; }
.about-intro-text p { font-size: 15px; color: var(--muted); line-height: 2; margin-bottom: 14px; }
.about-intro-card { background: var(--brand-grad); border-radius: 24px; padding: 40px 36px; color: #fff; position: relative; overflow: hidden; }
.about-intro-card::after { content: ""; position: absolute; right: -50px; top: -50px; width: 180px; height: 180px; border-radius: 50%; background: rgba(255, 255, 255, .12); }
.about-intro-card .aic-icon { width: 58px; height: 58px; border-radius: 16px; background: rgba(255, 255, 255, .2); display: flex; align-items: center; justify-content: center; font-size: 27px; margin-bottom: 20px; }
.about-intro-card h3 { font-size: 21px; font-weight: 800; margin-bottom: 10px; }
.about-intro-card p { font-size: 14px; opacity: .92; line-height: 1.9; }

.timeline { position: relative; max-width: 760px; margin: 0 auto; padding: 20px 0; }
.timeline::before { content: ""; position: absolute; left: 50%; top: 0; bottom: 0; width: 2px; background: linear-gradient(180deg, var(--brand), var(--purple)); transform: translateX(-50%); }
.tl-item { position: relative; width: 50%; padding: 0 40px 44px 0; }
.tl-item:nth-child(even) { margin-left: 50%; padding: 0 0 44px 40px; }
.tl-item::before {
  content: "";
  position: absolute;
  right: -9px; top: 6px;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: #fff;
  border: 4px solid var(--brand);
  box-shadow: 0 0 0 5px rgba(255, 74, 43, .14);
  z-index: 1;
}
.tl-item:nth-child(even)::before { right: auto; left: -9px; }
.tl-year { font-size: 13px; font-weight: 800; color: var(--brand); letter-spacing: 1px; margin-bottom: 6px; }
.tl-item h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.tl-item p { font-size: 13.8px; color: var(--muted); line-height: 1.8; }

.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.contact-card { background: #fff; border-radius: var(--radius); padding: 32px 28px; box-shadow: var(--shadow-sm); border: 1px solid var(--line); text-align: center; transition: transform .35s var(--ease-spring), box-shadow .35s; }
.contact-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.contact-card .cc-icon { width: 58px; height: 58px; border-radius: 17px; margin: 0 auto 18px; display: flex; align-items: center; justify-content: center; font-size: 25px; color: #fff; }
.contact-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.contact-card p { font-size: 14px; color: var(--muted); word-break: break-all; }
.contact-card a { color: var(--brand); font-weight: 700; }

/* ---------- 404 ---------- */
.notfound { text-align: center; padding: 110px 0 130px; }
.notfound .nf-code { font-size: 110px; font-weight: 800; line-height: 1; letter-spacing: 4px; }
.notfound h2 { font-size: 24px; font-weight: 700; margin: 18px 0 12px; }
.notfound p { color: var(--muted); margin-bottom: 30px; }

/* ---------- 响应式 ---------- */
@media (max-width: 1180px) {
  .hero h1 { font-size: 44px; }
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 1024px) {
  :root { --container: min(92%, 1180px); }
  .site-nav {
    position: fixed;
    top: 0; right: 0; bottom: 0;
    width: 270px;
    height: 100vh;
    height: 100dvh;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 84px 18px 24px;
    z-index: 99;
    overflow-y: auto;
    transform: translateX(105%);
    transition: transform .4s var(--ease-spring);
    box-shadow: -14px 0 40px rgba(25, 27, 43, .14);
    margin-inline: 0;
  }
  .site-nav.open { transform: none; }
  .nav-link { padding: 13px 16px; font-size: 15.5px; }
  .nav-link::after { left: 16px; transform: none; bottom: 8px; }
  .nav-toggle { display: flex; align-items: center; justify-content: center; }
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { height: 520px; max-width: 560px; margin: 0 auto; width: 100%; }
  .category-grid, .feature-preview-grid, .news-grid, .package-grid, .why-grid, .contact-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-block { grid-template-columns: 1fr; gap: 28px; }
  .feature-block:nth-child(even) .fb-visual { order: 0; }
  .news-layout { grid-template-columns: 1fr; }
  .about-intro { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 36px; }
}
@media (max-width: 720px) {
  :root { --container: calc(100% - 40px); --header-h: 64px; }
  .hero { padding: 44px 0 48px; }
  .hero h1 { font-size: 33px; }
  .hero-stats { flex-wrap: wrap; gap: 18px; }
  .hero-stat { border-right: none; padding-right: 0; margin-right: 0; }
  .section { padding: 52px 0; }
  .section-head h2 { font-size: 27px; }
  .category-grid, .feature-preview-grid, .news-grid, .package-grid, .why-grid, .contact-grid { grid-template-columns: 1fr; }
  .news-row { grid-template-columns: 1fr; }
  .news-row .news-cover { min-height: 0; aspect-ratio: 16 / 9; }
  .article-card { padding: 28px 22px; }
  .article-head h1 { font-size: 24px; }
  .article-nav { grid-template-columns: 1fr; }
  .cta-band { padding: 48px 24px; }
  .cta-band h2 { font-size: 25px; }
  .page-hero h1 { font-size: 30px; }
  .timeline::before { left: 9px; }
  .tl-item, .tl-item:nth-child(even) { width: 100%; margin-left: 0; padding: 0 0 36px 34px; }
  .tl-item::before, .tl-item:nth-child(even)::before { left: 0; right: auto; }
  .hide-mobile { display: none !important; }
  .feature-drawer { width: 100%; }
  .float-card.fc3 { display: none; }
  .fab-chat { width: 48px; height: 48px; font-size: 20px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  html { scroll-behavior: auto; }
}