/* ============================================================
   91吃瓜网 全局样式表 style.css
   设计系统：资讯红 + 墨黑 + 暖纸色 + 鎏金点缀
   ============================================================ */

/* ---------- 设计令牌 ---------- */
:root {
  --c-primary: #d92b3a;
  --c-primary-dark: #b01c2a;
  --c-primary-soft: #fdecee;
  --c-accent: #f2a93b;
  --c-ink: #171922;
  --c-ink-2: #23262f;
  --c-paper: #fbf8f3;
  --c-bg: #f6f4ef;
  --c-white: #ffffff;
  --c-text: #2b2e38;
  --c-text-2: #5b606e;
  --c-muted: #8b8f9c;
  --c-line: #e8e3d9;
  --c-success: #1f9d6b;
  --c-vip: #7a4ef0;

  --radius-s: 8px;
  --radius: 14px;
  --radius-l: 22px;
  --shadow-s: 0 2px 10px rgba(23, 25, 34, .06);
  --shadow: 0 10px 30px rgba(23, 25, 34, .10);
  --shadow-l: 0 24px 60px rgba(23, 25, 34, .16);
  --shadow-red: 0 12px 28px rgba(217, 43, 58, .28);

  --font: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", -apple-system, "Segoe UI", sans-serif;
  --wrap: 1200px;
  --header-h: 72px;
}

/* ---------- 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

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

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color .25s ease; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea, select { font-family: inherit; font-size: inherit; }

h1, h2, h3, h4 { color: var(--c-ink); line-height: 1.3; font-weight: 700; }

.wrap { width: min(var(--wrap), 92%); margin-inline: auto; }

.section { padding: 88px 0; }
.section--tight { padding: 60px 0; }
.bg-white { background: var(--c-white); }
.bg-paper { background: var(--c-paper); }
.bg-ink { background: radial-gradient(1200px 500px at 80% -10%, #31202a 0%, var(--c-ink) 55%); color: #d9dbe3; }
.bg-ink h2, .bg-ink h3 { color: #fff; }

/* ---------- 通用组件 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 30px; border-radius: 999px; font-weight: 600; font-size: 15px;
  transition: transform .25s ease, box-shadow .25s ease, background .25s ease, color .25s ease;
  white-space: nowrap;
}
.btn-primary { background: linear-gradient(135deg, #e83a49, var(--c-primary)); color: #fff; box-shadow: var(--shadow-red); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 18px 36px rgba(217,43,58,.38); }
.btn-ghost { border: 1.5px solid rgba(255,255,255,.55); color: #fff; }
.btn-ghost:hover { background: rgba(255,255,255,.12); transform: translateY(-3px); }
.btn-outline { border: 1.5px solid var(--c-primary); color: var(--c-primary); background: transparent; }
.btn-outline:hover { background: var(--c-primary); color: #fff; transform: translateY(-3px); }
.btn-dark { background: var(--c-ink); color: #fff; }
.btn-dark:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.btn-lg { padding: 16px 40px; font-size: 16px; }

.tag {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 3px 12px; border-radius: 999px; font-size: 12.5px; font-weight: 600;
  background: var(--c-primary-soft); color: var(--c-primary);
}
.tag--hot { background: linear-gradient(135deg,#e83a49,#c41e2d); color: #fff; }
.tag--gold { background: #fdf3e0; color: #b07416; }
.tag--dark { background: rgba(255,255,255,.12); color: #f3d6d9; }
.tag--vip { background: #efe9fe; color: var(--c-vip); }

.section-head { max-width: 720px; margin: 0 auto 52px; text-align: center; }
.section-head .eyebrow {
  display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: 3px;
  color: var(--c-primary); margin-bottom: 14px;
}
.section-head h2 { font-size: clamp(26px, 3.2vw, 38px); margin-bottom: 16px; }
.section-head p { color: var(--c-text-2); font-size: 16px; }
.bg-ink .section-head p { color: #b7bac6; }

.text-center { text-align: center; }

/* ---------- 顶部快讯条 ---------- */
.topbar {
  background: var(--c-ink); color: #cfd2dc; font-size: 13.5px;
  position: relative; z-index: 60;
}
.topbar .wrap { display: flex; align-items: center; gap: 16px; height: 38px; }
.topbar__label { flex: none; display: flex; align-items: center; gap: 6px; color: var(--c-accent); font-weight: 700; }
.topbar__label .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--c-primary); box-shadow: 0 0 0 0 rgba(217,43,58,.7); animation: pulse 1.6s infinite; }
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(217,43,58,.6); }
  70% { box-shadow: 0 0 0 9px rgba(217,43,58,0); }
  100% { box-shadow: 0 0 0 0 rgba(217,43,58,0); }
}
.topbar__track { overflow: hidden; flex: 1; mask-image: linear-gradient(90deg, transparent, #000 4%, #000 96%, transparent); }
.topbar__list { display: flex; gap: 48px; white-space: nowrap; animation: marquee 38s linear infinite; width: max-content; }
.topbar__list:hover { animation-play-state: paused; }
.topbar__list a:hover { color: #fff; }
.topbar__list b { color: var(--c-accent); margin-right: 8px; }
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }
.topbar__date { flex: none; color: #8b8f9c; }

/* ---------- 导航栏 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.92); backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--c-line);
  transition: box-shadow .3s ease;
}
.site-header.is-scrolled { box-shadow: var(--shadow-s); }
.nav { display: flex; align-items: center; gap: 28px; height: var(--header-h); }

.brand { display: flex; align-items: center; gap: 11px; flex: none; }
.brand__logo {
  width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center;
  background: linear-gradient(135deg, #e83a49, var(--c-primary-dark)); color: #fff;
  font-weight: 900; font-size: 20px; box-shadow: var(--shadow-red);
}
.brand__name { font-size: 19px; font-weight: 800; color: var(--c-ink); line-height: 1.2; }
.brand__name small { display: block; font-size: 11px; font-weight: 500; color: var(--c-muted); letter-spacing: 1px; }

.nav__menu { display: flex; gap: 6px; margin-left: auto; }
.nav__menu a {
  padding: 9px 16px; border-radius: 999px; font-size: 15px; font-weight: 500; color: var(--c-text);
  position: relative;
}
.nav__menu a:hover { color: var(--c-primary); background: var(--c-primary-soft); }
.nav__menu a.is-active { color: var(--c-primary); font-weight: 700; }
.nav__menu a.is-active::after {
  content: ""; position: absolute; left: 50%; bottom: 2px; width: 18px; height: 3px;
  border-radius: 3px; background: var(--c-primary); transform: translateX(-50%);
}
.nav__cta { flex: none; }
.nav__toggle { display: none; width: 44px; height: 44px; border-radius: 10px; margin-left: auto; }
.nav__toggle span { display: block; width: 22px; height: 2.5px; background: var(--c-ink); margin: 5px auto; border-radius: 2px; transition: .3s; }
.nav__toggle.is-open span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.nav__toggle.is-open span:nth-child(2) { opacity: 0; }
.nav__toggle.is-open span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; background: var(--c-ink); color: #eef0f5; }
.hero::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(620px 380px at 85% 8%, rgba(217,43,58,.35), transparent 65%),
    radial-gradient(420px 300px at 8% 90%, rgba(242,169,59,.14), transparent 60%);
  pointer-events: none;
}
.hero::after {
  content: ""; position: absolute; inset: 0; opacity: .07; pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,.6) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.6) 1px, transparent 1px);
  background-size: 46px 46px;
}
.hero .wrap { position: relative; z-index: 2; }
.hero__inner { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; padding: 84px 0 92px; }

.hero__badge {
  display: inline-flex; align-items: center; gap: 8px; padding: 7px 16px;
  border: 1px solid rgba(255,255,255,.18); border-radius: 999px;
  background: rgba(255,255,255,.07); font-size: 13.5px; color: #f0d7da; margin-bottom: 26px;
}
.hero h1 { font-size: clamp(32px, 4.6vw, 54px); color: #fff; line-height: 1.22; margin-bottom: 22px; letter-spacing: -.5px; }
.hero h1 em { font-style: normal; background: linear-gradient(120deg, #ff8a6b, var(--c-accent)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero__desc { font-size: 17px; color: #b9bcc8; max-width: 540px; margin-bottom: 32px; }

.hero__search {
  display: flex; align-items: center; background: #fff; border-radius: 999px; padding: 7px 7px 7px 24px;
  max-width: 560px; box-shadow: var(--shadow-l); gap: 10px;
}
.hero__search input { flex: 1; border: none; outline: none; font-size: 15.5px; color: var(--c-text); min-width: 0; background: transparent; }
.hero__hot { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.hero__hot a {
  font-size: 13.5px; color: #c9ccd6; padding: 5px 14px; border-radius: 999px;
  border: 1px solid rgba(255,255,255,.16);
}
.hero__hot a:hover { color: #fff; border-color: var(--c-primary); background: rgba(217,43,58,.25); }

.hero__actions { display: flex; gap: 16px; margin-top: 30px; flex-wrap: wrap; }

.hero__stats { display: flex; gap: 40px; margin-top: 44px; }
.hero__stats b { display: block; font-size: 28px; color: #fff; font-weight: 800; }
.hero__stats span { font-size: 13px; color: #9a9eab; }

/* Hero 视觉拼贴 */
.hero__visual { position: relative; }
.hero__main-card {
  border-radius: var(--radius-l); overflow: hidden; position: relative;
  box-shadow: var(--shadow-l); border: 1px solid rgba(255,255,255,.12);
  transform: rotate(1.5deg); transition: transform .5s ease;
}
.hero__main-card:hover { transform: rotate(0deg) scale(1.015); }
.hero__main-card img { width: 100%; height: 420px; object-fit: cover; }
.hero__main-card .cap {
  position: absolute; inset: auto 0 0 0; padding: 46px 22px 20px;
  background: linear-gradient(transparent, rgba(12,13,18,.92)); color: #fff;
}
.hero__main-card .cap h3 { color: #fff; font-size: 18px; margin: 8px 0 4px; }
.hero__main-card .cap p { font-size: 13px; color: #c3c6d1; }
.hero__float {
  position: absolute; background: #fff; border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 14px 18px; display: flex; gap: 12px; align-items: center;
  color: var(--c-text); font-size: 13.5px; font-weight: 600;
  animation: floaty 4.5s ease-in-out infinite;
}
.hero__float--tl { top: -22px; left: -30px; animation-delay: .2s; }
.hero__float--br { bottom: -24px; right: -20px; animation-delay: 1.1s; }
.hero__float .ico { width: 38px; height: 38px; border-radius: 10px; display: grid; place-items: center; color: #fff; flex: none; }
.hero__float .ico.red { background: linear-gradient(135deg,#e83a49,var(--c-primary)); }
.hero__float .ico.gold { background: linear-gradient(135deg,#f7bd57, #e08c14); }
.hero__float small { display: block; font-weight: 400; color: var(--c-muted); font-size: 12px; }
@keyframes floaty { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }

/* ---------- 核心特性 ---------- */
.features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.feature-card {
  background: var(--c-white); border: 1px solid var(--c-line); border-radius: var(--radius-l);
  padding: 36px 28px; transition: transform .35s ease, box-shadow .35s ease, border-color .35s ease;
  position: relative; overflow: hidden;
}
.feature-card::before {
  content: ""; position: absolute; inset: 0 0 auto; height: 4px;
  background: linear-gradient(90deg, var(--c-primary), var(--c-accent));
  transform: scaleX(0); transform-origin: left; transition: transform .4s ease;
}
.feature-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); border-color: transparent; }
.feature-card:hover::before { transform: scaleX(1); }
.feature-card__ico {
  width: 58px; height: 58px; border-radius: 16px; display: grid; place-items: center;
  background: var(--c-primary-soft); color: var(--c-primary); margin-bottom: 22px;
  transition: transform .35s ease, background .35s ease;
}
.feature-card:hover .feature-card__ico { transform: rotate(-6deg) scale(1.08); background: var(--c-primary); color: #fff; }
.feature-card h3 { font-size: 19px; margin-bottom: 11px; }
.feature-card p { font-size: 14.5px; color: var(--c-text-2); }

/* ---------- 热点新闻卡片 ---------- */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.news-card {
  background: var(--c-white); border-radius: var(--radius-l); overflow: hidden;
  border: 1px solid var(--c-line); transition: transform .35s ease, box-shadow .35s ease;
  display: flex; flex-direction: column;
}
.news-card:hover { transform: translateY(-7px); box-shadow: var(--shadow); }
.news-card__media { position: relative; overflow: hidden; aspect-ratio: 16/10; }
.news-card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.news-card:hover .news-card__media img { transform: scale(1.07); }
.news-card__media .tag { position: absolute; left: 14px; top: 14px; box-shadow: 0 4px 12px rgba(0,0,0,.18); }
.news-card__body { padding: 22px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.news-card__meta { display: flex; align-items: center; gap: 12px; font-size: 12.5px; color: var(--c-muted); margin-bottom: 10px; }
.news-card__meta .views { margin-left: auto; display: inline-flex; align-items: center; gap: 4px; }
.news-card h3 { font-size: 17.5px; line-height: 1.5; margin-bottom: 10px; transition: color .25s; }
.news-card:hover h3 { color: var(--c-primary); }
.news-card p { font-size: 14px; color: var(--c-text-2); flex: 1; }
.news-card__more { margin-top: 16px; font-size: 14px; font-weight: 600; color: var(--c-primary); display: inline-flex; gap: 6px; align-items: center; }
.news-card__more svg { transition: transform .25s; }
.news-card:hover .news-card__more svg { transform: translateX(5px); }

/* 横向大卡 */
.news-feature {
  display: grid; grid-template-columns: 1.1fr 1fr; gap: 0;
  background: var(--c-white); border: 1px solid var(--c-line); border-radius: var(--radius-l); overflow: hidden;
  transition: box-shadow .35s ease, transform .35s ease;
}
.news-feature:hover { box-shadow: var(--shadow); transform: translateY(-5px); }
.news-feature__media img { width: 100%; height: 100%; min-height: 340px; object-fit: cover; }
.news-feature__body { padding: 44px 42px; align-self: center; }
.news-feature__body h3 { font-size: 26px; margin: 14px 0 16px; }
.news-feature__body p { color: var(--c-text-2); margin-bottom: 24px; }

/* 热榜 */
.rank-wrap { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.rank-card {
  background: var(--c-white); border: 1px solid var(--c-line); border-radius: var(--radius-l); padding: 30px;
}
.rank-card__head { display: flex; align-items: center; gap: 10px; margin-bottom: 22px; }
.rank-card__head h3 { font-size: 20px; }
.rank-card__head .fire { color: var(--c-primary); }
.rank-list li { display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px dashed var(--c-line); }
.rank-list li:last-child { border-bottom: none; }
.rank-list .no {
  width: 26px; height: 26px; border-radius: 7px; flex: none; display: grid; place-items: center;
  font-size: 13.5px; font-weight: 800; background: var(--c-bg); color: var(--c-muted);
}
.rank-list li:nth-child(1) .no, .rank-list li:nth-child(2) .no, .rank-list li:nth-child(3) .no {
  background: linear-gradient(135deg,#e83a49,var(--c-primary)); color: #fff;
}
.rank-list a { font-size: 15px; font-weight: 500; line-height: 1.55; display: block; }
.rank-list a:hover { color: var(--c-primary); }
.rank-list .heat { margin-left: auto; flex: none; font-size: 12.5px; color: var(--c-muted); padding-top: 4px; }

/* ---------- 服务介绍 ---------- */
.services { display: grid; gap: 30px; }
.service-row {
  display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center;
  background: var(--c-white); border: 1px solid var(--c-line); border-radius: var(--radius-l);
  overflow: hidden;
}
.service-row:nth-child(even) .service-row__media { order: 2; }
.service-row__media { position: relative; height: 100%; min-height: 320px; }
.service-row__media img { width: 100%; height: 100%; min-height: 320px; object-fit: cover; }
.service-row__body { padding: 46px 48px; }
.service-row__body .num {
  font-size: 15px; font-weight: 800; color: var(--c-primary); letter-spacing: 3px;
}
.service-row__body h3 { font-size: 25px; margin: 10px 0 14px; }
.service-row__body p { color: var(--c-text-2); margin-bottom: 22px; }
.service-checks { display: grid; gap: 12px; }
.service-checks li { display: flex; gap: 10px; align-items: flex-start; font-size: 15px; }
.service-checks svg { flex: none; margin-top: 4px; color: var(--c-success); }

/* ---------- 数据条 ---------- */
.stats-band { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center; }
.stats-band__item b { display: block; font-size: clamp(30px, 3.6vw, 44px); font-weight: 900; color: #fff; }
.stats-band__item b span { color: var(--c-accent); }
.stats-band__item small { font-size: 14px; color: #aeb2bf; }

/* ---------- 流程 ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; counter-reset: step; }
.step {
  background: var(--c-white); border: 1px solid var(--c-line); border-radius: var(--radius-l);
  padding: 34px 26px; position: relative;
}
.step::before {
  counter-increment: step; content: "0" counter(step);
  font-size: 38px; font-weight: 900; color: transparent; -webkit-text-stroke: 1.5px var(--c-primary);
  opacity: .35; display: block; margin-bottom: 10px;
}
.step h3 { font-size: 18px; margin-bottom: 9px; }
.step p { font-size: 14px; color: var(--c-text-2); }

/* ---------- 用户评价 ---------- */
.quotes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.quote-card {
  background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-l); padding: 32px 28px; backdrop-filter: blur(6px);
}
.quote-card p { color: #d3d5de; font-size: 15px; margin-bottom: 22px; }
.quote-card__user { display: flex; align-items: center; gap: 13px; }
.quote-card__user img { width: 46px; height: 46px; border-radius: 50%; object-fit: cover; border: 2px solid var(--c-accent); }
.quote-card__user b { color: #fff; font-size: 15px; display: block; }
.quote-card__user span { color: #9a9eab; font-size: 13px; }
.stars { color: var(--c-accent); letter-spacing: 3px; margin-bottom: 14px; }

/* ---------- FAQ ---------- */
.faq-list { max-width: 820px; margin: 0 auto; display: grid; gap: 14px; }
.faq-item { background: var(--c-white); border: 1px solid var(--c-line); border-radius: var(--radius); overflow: hidden; transition: box-shadow .3s, border-color .3s; }
.faq-item.is-open { box-shadow: var(--shadow-s); border-color: #f2d6d9; }
.faq-item__q {
  width: 100%; display: flex; align-items: center; gap: 14px; text-align: left;
  padding: 21px 26px; font-size: 16px; font-weight: 700; color: var(--c-ink);
}
.faq-item__q .q-ico { flex: none; width: 28px; height: 28px; border-radius: 8px; background: var(--c-primary-soft); color: var(--c-primary); display: grid; place-items: center; font-size: 15px; }
.faq-item__q .arrow { margin-left: auto; flex: none; transition: transform .3s; color: var(--c-muted); }
.faq-item.is-open .arrow { transform: rotate(180deg); color: var(--c-primary); }
.faq-item__a { max-height: 0; overflow: hidden; transition: max-height .4s ease; }
.faq-item__a p { padding: 0 26px 22px 68px; color: var(--c-text-2); font-size: 14.5px; }

/* ---------- CTA ---------- */
.cta-box {
  position: relative; overflow: hidden; border-radius: var(--radius-l);
  background: linear-gradient(125deg, #c41e2d 0%, #d92b3a 45%, #8e163a 100%);
  padding: 72px 64px; color: #fff; text-align: center;
}
.cta-box::before, .cta-box::after {
  content: ""; position: absolute; border-radius: 50%; background: rgba(255,255,255,.08);
}
.cta-box::before { width: 340px; height: 340px; top: -160px; right: -90px; }
.cta-box::after { width: 240px; height: 240px; bottom: -130px; left: -70px; }
.cta-box h2 { color: #fff; font-size: clamp(26px, 3.4vw, 40px); margin-bottom: 16px; position: relative; }
.cta-box p { font-size: 16.5px; color: #f7dbe0; max-width: 620px; margin: 0 auto 32px; position: relative; }
.cta-box__actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; position: relative; }
.cta-box .btn-white { background: #fff; color: var(--c-primary); font-weight: 700; }
.cta-box .btn-white:hover { transform: translateY(-3px); box-shadow: 0 16px 34px rgba(0,0,0,.25); }

/* ---------- 页脚 ---------- */
.site-footer { background: #10121a; color: #9a9eab; padding-top: 68px; font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr) 1.3fr; gap: 36px; padding-bottom: 48px; }
.footer-brand .brand__name { color: #fff; }
.footer-brand p { margin: 18px 0 20px; line-height: 1.9; }
.footer-col h4 { color: #fff; font-size: 15.5px; margin-bottom: 20px; }
.footer-col li { margin-bottom: 12px; }
.footer-col a:hover { color: #fff; }
.footer-qr { display: flex; gap: 14px; align-items: center; }
.footer-qr .qr-box {
  width: 88px; height: 88px; border-radius: 12px; background: #fff; padding: 7px; flex: none;
}
.footer-qr .qr-box img { width: 100%; height: 100%; object-fit: cover; border-radius: 6px; }
.footer-social { display: flex; gap: 10px; margin-top: 18px; }
.footer-social a {
  width: 38px; height: 38px; border-radius: 10px; background: rgba(255,255,255,.07);
  display: grid; place-items: center; color: #c9ccd6;
}
.footer-social a:hover { background: var(--c-primary); color: #fff; transform: translateY(-3px); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08); padding: 22px 0; display: flex;
  justify-content: space-between; gap: 14px; flex-wrap: wrap; font-size: 13px; color: #767a88;
}
.footer-bottom a:hover { color: #fff; }

/* ---------- 页面横幅（内页） ---------- */
.page-hero {
  background: radial-gradient(700px 320px at 82% 0%, rgba(217,43,58,.4), transparent 60%), var(--c-ink);
  color: #d6d9e2; padding: 64px 0 58px;
}
.breadcrumb { font-size: 13.5px; color: #9a9eab; margin-bottom: 18px; display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.breadcrumb a:hover { color: #fff; }
.breadcrumb .sep { opacity: .5; }
.page-hero h1 { color: #fff; font-size: clamp(28px, 4vw, 42px); margin-bottom: 14px; }
.page-hero p { max-width: 680px; color: #b3b7c3; font-size: 16px; }

/* ---------- 新闻列表页 ---------- */
.layout { display: grid; grid-template-columns: 1fr 330px; gap: 38px; align-items: start; }
.filter-bar {
  display: flex; gap: 10px; flex-wrap: wrap; background: var(--c-white);
  border: 1px solid var(--c-line); border-radius: var(--radius); padding: 16px 20px; margin-bottom: 28px;
  position: sticky; top: calc(var(--header-h) + 12px); z-index: 20;
}
.filter-bar button {
  padding: 8px 20px; border-radius: 999px; font-size: 14px; font-weight: 500; color: var(--c-text-2);
}
.filter-bar button:hover { background: var(--c-bg); }
.filter-bar button.is-active { background: var(--c-primary); color: #fff; font-weight: 600; }

.news-list { display: grid; gap: 22px; }
.news-row {
  display: grid; grid-template-columns: 248px 1fr; gap: 26px; background: var(--c-white);
  border: 1px solid var(--c-line); border-radius: var(--radius-l); overflow: hidden;
  transition: transform .3s, box-shadow .3s;
}
.news-row:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.news-row__media img { width: 100%; height: 100%; min-height: 190px; object-fit: cover; }
.news-row__body { padding: 24px 26px 24px 0; }
.news-row__body h3 { font-size: 19px; margin: 10px 0; transition: color .25s; }
.news-row:hover h3 { color: var(--c-primary); }
.news-row__body p { font-size: 14px; color: var(--c-text-2); margin-bottom: 16px; }
.news-row__foot { display: flex; align-items: center; gap: 14px; font-size: 13px; color: var(--c-muted); }

.pagination { display: flex; gap: 8px; justify-content: center; margin-top: 40px; }
.pagination a, .pagination span {
  min-width: 42px; height: 42px; padding: 0 12px; border-radius: 11px; display: grid; place-items: center;
  background: var(--c-white); border: 1px solid var(--c-line); font-size: 14.5px; font-weight: 600; color: var(--c-text);
}
.pagination a:hover { border-color: var(--c-primary); color: var(--c-primary); transform: translateY(-2px); }
.pagination .is-current { background: var(--c-primary); color: #fff; border-color: var(--c-primary); }

/* 侧边栏 */
.sidebar { display: grid; gap: 26px; position: sticky; top: calc(var(--header-h) + 12px); }
.side-card { background: var(--c-white); border: 1px solid var(--c-line); border-radius: var(--radius-l); padding: 26px; }
.side-card h3 { font-size: 18px; margin-bottom: 18px; display: flex; align-items: center; gap: 8px; }
.side-card h3::after { content: ""; flex: 1; height: 1px; background: var(--c-line); }
.side-rank li { display: flex; gap: 12px; padding: 11px 0; border-bottom: 1px dashed var(--c-line); align-items: flex-start; }
.side-rank li:last-child { border: none; }
.side-rank .no { width: 23px; height: 23px; border-radius: 6px; background: var(--c-bg); color: var(--c-muted); font-size: 12.5px; font-weight: 800; display: grid; place-items: center; flex: none; }
.side-rank li:nth-child(-n+3) .no { background: var(--c-primary); color: #fff; }
.side-rank a { font-size: 14.5px; line-height: 1.5; }
.side-rank a:hover { color: var(--c-primary); }
.side-tags { display: flex; flex-wrap: wrap; gap: 9px; }
.side-tags a { padding: 6px 14px; border-radius: 999px; background: var(--c-bg); font-size: 13px; color: var(--c-text-2); }
.side-tags a:hover { background: var(--c-primary-soft); color: var(--c-primary); }
.side-subscribe { background: linear-gradient(150deg, #1f2230, var(--c-ink)); color: #cfd2dc; border: none; }
.side-subscribe h3 { color: #fff; }
.side-subscribe h3::after { background: rgba(255,255,255,.12); }
.side-subscribe p { font-size: 13.5px; margin-bottom: 16px; }
.side-subscribe input { width: 100%; padding: 12px 16px; border-radius: 10px; border: 1px solid rgba(255,255,255,.15); background: rgba(255,255,255,.06); color: #fff; outline: none; margin-bottom: 10px; }
.side-subscribe input::placeholder { color: #7e828f; }
.side-subscribe .btn { width: 100%; }

/* ---------- 文章详情 ---------- */
.article { background: var(--c-white); border: 1px solid var(--c-line); border-radius: var(--radius-l); padding: 48px clamp(24px, 5vw, 64px); }
.article-head { border-bottom: 1px solid var(--c-line); padding-bottom: 30px; margin-bottom: 34px; }
.article-head .article-title { font-size: clamp(24px, 3.2vw, 34px); line-height: 1.4; margin: 16px 0 18px; }
.article-meta { display: flex; flex-wrap: wrap; gap: 18px; font-size: 13.5px; color: var(--c-muted); align-items: center; }
.article-meta .author { display: flex; align-items: center; gap: 9px; }
.article-meta .author img { width: 34px; height: 34px; border-radius: 50%; object-fit: cover; }
.article-cover { border-radius: var(--radius); overflow: hidden; margin-bottom: 34px; }
.article-cover img { width: 100%; max-height: 460px; object-fit: cover; }
.article-body { font-size: 16.5px; line-height: 2; color: #33363f; }
.article-body p { margin-bottom: 22px; }
.article-body h2 { font-size: 23px; margin: 38px 0 16px; padding-left: 14px; border-left: 4px solid var(--c-primary); }
.article-body h3 { font-size: 19px; margin: 28px 0 12px; }
.article-body blockquote {
  border-left: 4px solid var(--c-accent); background: #fdf8ec; padding: 18px 24px;
  border-radius: 0 var(--radius-s) var(--radius-s) 0; color: #6b5726; margin: 24px 0;
}
.article-body ul { margin: 0 0 22px 4px; }
.article-body ul li { position: relative; padding-left: 26px; margin-bottom: 10px; }
.article-body ul li::before { content: ""; position: absolute; left: 4px; top: 12px; width: 8px; height: 8px; border-radius: 50%; background: var(--c-primary); }
.article-body figure { margin: 28px 0; }
.article-body figure img { border-radius: var(--radius); }
.article-body figcaption { text-align: center; font-size: 13.5px; color: var(--c-muted); margin-top: 10px; }
.article-tags { display: flex; gap: 10px; flex-wrap: wrap; margin: 36px 0; padding-top: 26px; border-top: 1px solid var(--c-line); }
.article-share { display: flex; align-items: center; gap: 12px; margin-bottom: 30px; }
.article-share span { font-size: 14px; color: var(--c-muted); }
.article-share a { width: 40px; height: 40px; border-radius: 10px; background: var(--c-bg); display: grid; place-items: center; color: var(--c-text-2); }
.article-share a:hover { background: var(--c-primary); color: #fff; transform: translateY(-3px); }
.article-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.article-nav a {
  background: var(--c-bg); border-radius: var(--radius); padding: 18px 22px; font-size: 14px;
}
.article-nav a span { display: block; color: var(--c-muted); font-size: 12.5px; margin-bottom: 5px; }
.article-nav a:hover { background: var(--c-primary-soft); color: var(--c-primary); }
.article-nav .next { text-align: right; }

/* 评论 */
.comments { margin-top: 38px; }
.comments h3 { font-size: 20px; margin-bottom: 22px; }
.comment { display: flex; gap: 14px; padding: 20px 0; border-bottom: 1px dashed var(--c-line); }
.comment > img { width: 44px; height: 44px; border-radius: 50%; object-fit: cover; flex: none; }
.comment b { font-size: 15px; color: var(--c-ink); }
.comment time { font-size: 12.5px; color: var(--c-muted); margin-left: 10px; }
.comment p { font-size: 14.5px; color: var(--c-text-2); margin-top: 6px; }
.comment-form { background: var(--c-bg); border-radius: var(--radius); padding: 24px; margin-bottom: 10px; }
.comment-form textarea { width: 100%; min-height: 110px; border: 1px solid var(--c-line); border-radius: var(--radius-s); padding: 14px; resize: vertical; outline: none; background: #fff; }
.comment-form textarea:focus { border-color: var(--c-primary); }
.comment-form .btn { margin-top: 12px; }

/* 相关阅读 */
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 30px; }

/* ---------- 产品页 ---------- */
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; align-items: stretch; }
.price-card {
  background: var(--c-white); border: 1px solid var(--c-line); border-radius: var(--radius-l);
  padding: 40px 34px; display: flex; flex-direction: column; position: relative; overflow: hidden;
  transition: transform .35s ease, box-shadow .35s ease;
}
.price-card:hover { transform: translateY(-10px); box-shadow: var(--shadow); }
.price-card--featured { border: 2px solid var(--c-primary); box-shadow: var(--shadow-red); }
.price-card--featured::before {
  content: "最受欢迎"; position: absolute; top: 22px; right: -38px; transform: rotate(40deg);
  background: linear-gradient(135deg,#f7bd57,#e08c14); color: #fff; font-size: 12px; font-weight: 700;
  padding: 5px 44px;
}
.price-card__name { font-size: 20px; font-weight: 800; }
.price-card__desc { font-size: 13.5px; color: var(--c-muted); margin: 8px 0 22px; min-height: 40px; }
.price-card__price { font-size: 40px; font-weight: 900; color: var(--c-ink); }
.price-card__price small { font-size: 15px; font-weight: 500; color: var(--c-muted); }
.price-card__price del { font-size: 15px; color: var(--c-muted); font-weight: 400; margin-left: 8px; }
.price-card ul { margin: 26px 0 30px; display: grid; gap: 13px; flex: 1; }
.price-card li { display: flex; gap: 10px; font-size: 14.5px; align-items: flex-start; }
.price-card li svg { flex: none; margin-top: 5px; color: var(--c-success); }
.price-card li.off { color: var(--c-muted); }
.price-card li.off svg { color: #cfd2d6; }
.price-card .btn { width: 100%; }

/* 产品功能卡 */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.product-card {
  background: var(--c-white); border: 1px solid var(--c-line); border-radius: var(--radius-l);
  padding: 34px 30px; transition: transform .3s, box-shadow .3s;
}
.product-card:hover { transform: translateY(-7px); box-shadow: var(--shadow); }
.product-card__ico { width: 56px; height: 56px; border-radius: 15px; display: grid; place-items: center; margin-bottom: 20px; color: #fff; }
.product-card h3 { font-size: 19px; margin-bottom: 10px; }
.product-card p { font-size: 14.5px; color: var(--c-text-2); margin-bottom: 16px; }
.product-card .link { color: var(--c-primary); font-weight: 600; font-size: 14px; }
.bg-grad-1 { background: linear-gradient(135deg,#e83a49,var(--c-primary)); }
.bg-grad-2 { background: linear-gradient(135deg,#8a5cf6,#5b2fd6); }
.bg-grad-3 { background: linear-gradient(135deg,#f7b733,#e07b14); }
.bg-grad-4 { background: linear-gradient(135deg,#13b981,#0b855c); }
.bg-grad-5 { background: linear-gradient(135deg,#2f80ed,#1557b0); }
.bg-grad-6 { background: linear-gradient(135deg,#e84393,#c02673); }

/* 对比表 */
.compare-table { width: 100%; border-collapse: collapse; background: var(--c-white); border-radius: var(--radius-l); overflow: hidden; box-shadow: var(--shadow-s); }
.compare-table th, .compare-table td { padding: 17px 22px; text-align: center; font-size: 14.5px; border-bottom: 1px solid var(--c-line); }
.compare-table th:first-child, .compare-table td:first-child { text-align: left; font-weight: 600; }
.compare-table thead th { background: var(--c-ink); color: #fff; font-size: 15px; }
.compare-table tbody tr:hover { background: var(--c-primary-soft); }
.compare-table .yes { color: var(--c-success); font-weight: 800; }
.compare-table .no { color: #c3c6d1; }
.table-scroll { overflow-x: auto; border-radius: var(--radius-l); }

/* ---------- 关于页 ---------- */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.about-grid img { border-radius: var(--radius-l); box-shadow: var(--shadow); }
.about-values { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.value-card { background: var(--c-white); border: 1px solid var(--c-line); border-radius: var(--radius-l); padding: 34px 28px; text-align: center; }
.value-card .ico { width: 60px; height: 60px; border-radius: 50%; margin: 0 auto 18px; display: grid; place-items: center; background: var(--c-primary-soft); color: var(--c-primary); }
.value-card h3 { font-size: 18px; margin-bottom: 10px; }
.value-card p { font-size: 14px; color: var(--c-text-2); }

.timeline { position: relative; max-width: 860px; margin: 0 auto; padding-left: 40px; }
.timeline::before { content: ""; position: absolute; left: 9px; top: 6px; bottom: 6px; width: 2px; background: linear-gradient(var(--c-primary), var(--c-accent)); }
.timeline-item { position: relative; padding: 0 0 40px 30px; }
.timeline-item::before {
  content: ""; position: absolute; left: -37px; top: 6px; width: 20px; height: 20px; border-radius: 50%;
  background: #fff; border: 5px solid var(--c-primary); box-shadow: 0 0 0 5px var(--c-primary-soft);
}
.timeline-item time { font-size: 13.5px; font-weight: 700; color: var(--c-primary); }
.timeline-item h3 { font-size: 19px; margin: 6px 0 8px; }
.timeline-item p { color: var(--c-text-2); font-size: 14.5px; }

.team-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.team-card { background: var(--c-white); border: 1px solid var(--c-line); border-radius: var(--radius-l); overflow: hidden; text-align: center; transition: transform .3s, box-shadow .3s; }
.team-card:hover { transform: translateY(-7px); box-shadow: var(--shadow); }
.team-card img { aspect-ratio: 1; object-fit: cover; }
.team-card__body { padding: 20px 16px; }
.team-card h3 { font-size: 17px; }
.team-card span { font-size: 13px; color: var(--c-muted); }

/* ---------- 联系页 ---------- */
.contact-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 36px; align-items: start; }
.contact-info { display: grid; gap: 18px; }
.contact-item {
  background: var(--c-white); border: 1px solid var(--c-line); border-radius: var(--radius-l);
  padding: 28px; display: flex; gap: 18px; align-items: flex-start; transition: transform .3s, box-shadow .3s;
}
.contact-item:hover { transform: translateY(-5px); box-shadow: var(--shadow-s); }
.contact-item__ico { width: 52px; height: 52px; border-radius: 14px; background: var(--c-primary-soft); color: var(--c-primary); display: grid; place-items: center; flex: none; }
.contact-item h3 { font-size: 17px; margin-bottom: 5px; }
.contact-item p { font-size: 14.5px; color: var(--c-text-2); }
.contact-form {
  background: var(--c-white); border: 1px solid var(--c-line); border-radius: var(--radius-l); padding: 40px 38px;
}
.contact-form h2 { font-size: 24px; margin-bottom: 8px; }
.contact-form > p { color: var(--c-text-2); font-size: 14.5px; margin-bottom: 26px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 8px; color: var(--c-ink); }
.field label b { color: var(--c-primary); }
.field input, .field select, .field textarea {
  width: 100%; padding: 13px 16px; border: 1.5px solid var(--c-line); border-radius: var(--radius-s);
  outline: none; background: var(--c-paper); transition: border-color .25s, background .25s;
}
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--c-primary); background: #fff; }
.field textarea { min-height: 130px; resize: vertical; }
.form-note { font-size: 12.5px; color: var(--c-muted); margin-top: 8px; }
.form-toast {
  display: none; margin-top: 16px; padding: 13px 18px; border-radius: var(--radius-s);
  background: #e7f7ef; color: #0b7a4f; font-size: 14px; font-weight: 600;
}
.form-toast.is-show { display: block; animation: fadeUp .4s ease; }

.map-card { border-radius: var(--radius-l); overflow: hidden; border: 1px solid var(--c-line); margin-top: 36px; position: relative; }
.map-card img { width: 100%; height: 320px; object-fit: cover; filter: saturate(.85); }
.map-card__pin {
  position: absolute; left: 50%; top: 46%; transform: translate(-50%, -100%);
  background: #fff; padding: 10px 18px; border-radius: 999px; box-shadow: var(--shadow);
  font-size: 14px; font-weight: 700; color: var(--c-ink); display: flex; gap: 8px; align-items: center;
}
.map-card__pin i { width: 10px; height: 10px; border-radius: 50%; background: var(--c-primary); }

/* ---------- 入场动画 ---------- */
.reveal { opacity: 0; transform: translateY(34px); transition: opacity .7s ease, transform .7s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: .1s; }
.reveal[data-delay="2"] { transition-delay: .2s; }
.reveal[data-delay="3"] { transition-delay: .3s; }
.reveal[data-delay="4"] { transition-delay: .4s; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }

/* ---------- 返回顶部 ---------- */
.back-top {
  position: fixed; right: 26px; bottom: 30px; width: 48px; height: 48px; border-radius: 14px;
  background: var(--c-primary); color: #fff; display: grid; place-items: center;
  box-shadow: var(--shadow-red); opacity: 0; visibility: hidden; transform: translateY(16px);
  transition: .35s; z-index: 90;
}
.back-top.is-show { opacity: 1; visibility: visible; transform: none; }
.back-top:hover { background: var(--c-primary-dark); transform: translateY(-4px); }

/* ============================================================
   响应式断点
   ============================================================ */
@media (max-width: 1080px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .news-grid, .quotes, .product-grid, .pricing-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .related-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 920px) {
  .nav__toggle { display: block; }
  .nav__menu {
    position: fixed; inset: calc(var(--header-h) + 38px) 0 auto 0;
    background: #fff; flex-direction: column; gap: 4px; padding: 16px 5%;
    border-bottom: 1px solid var(--c-line); box-shadow: var(--shadow);
    transform: translateY(-130%); transition: transform .35s ease; margin-left: 0;
  }
  .nav__menu.is-open { transform: translateY(0); }
  .nav__menu a { padding: 13px 18px; border-radius: 12px; font-size: 16px; }
  .nav__menu a.is-active::after { display: none; }
  .nav__menu a.is-active { background: var(--c-primary-soft); }
  .nav__cta { display: none; }

  .hero__inner { grid-template-columns: 1fr; gap: 46px; padding: 56px 0 64px; }
  .hero__visual { max-width: 480px; margin: 0 auto; width: 100%; }
  .hero__main-card img { height: 340px; }

  .layout, .contact-grid, .about-grid { grid-template-columns: 1fr; }
  .sidebar { position: static; }
  .filter-bar { position: static; }

  .service-row, .news-feature { grid-template-columns: 1fr; }
  .service-row:nth-child(even) .service-row__media { order: 0; }
  .service-row__body, .news-feature__body { padding: 32px 26px; }
  .service-row__media img, .service-row__media { min-height: 240px; }

  .news-row { grid-template-columns: 1fr; }
  .news-row__media img { min-height: 200px; }
  .news-row__body { padding: 0 22px 22px; }

  .rank-wrap, .stats-band { grid-template-columns: repeat(2, 1fr); gap: 30px; }
  .topbar__date { display: none; }
}

@media (max-width: 640px) {
  .section { padding: 60px 0; }
  .features-grid, .news-grid, .quotes, .product-grid, .pricing-grid,
  .steps, .about-values, .team-grid, .related-grid, .rank-wrap { grid-template-columns: 1fr; }
  .form-row, .article-nav { grid-template-columns: 1fr; }
  .article-nav .next { text-align: left; }
  .hero__stats { gap: 24px; flex-wrap: wrap; }
  .hero__float--tl { left: -6px; }
  .hero__float--br { right: -6px; }
  .cta-box { padding: 52px 26px; }
  .article { padding: 30px 20px; }
  .contact-form { padding: 30px 22px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .back-top { right: 16px; bottom: 18px; }
  .topbar { display: none; }
  .nav__menu { inset: var(--header-h) 0 auto 0; }
  .news-feature__body h3, .service-row__body h3 { font-size: 21px; }
}

/* ---------- 减少动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  html { scroll-behavior: auto; }
}