/* ============================================================
   91网浏览器网版 - 全站共享样式
   字体：Noto Sans SC ｜ 配色：科技蓝 + 青色光效
   ============================================================ */

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-deep: #1e3a8a;
  --accent: #06b6d4;
  --accent-2: #22d3ee;
  --ink: #0f1b33;
  --text: #33415c;
  --text-light: #64748b;
  --bg: #f5f8ff;
  --bg-soft: #eef3fc;
  --white: #ffffff;
  --border: #e2e9f5;
  --shadow-sm: 0 2px 10px rgba(30, 58, 138, .06);
  --shadow: 0 12px 34px rgba(30, 58, 138, .10);
  --shadow-lg: 0 26px 60px rgba(15, 42, 105, .16);
  --radius: 16px;
  --radius-sm: 10px;
  --gradient: linear-gradient(135deg, #2563eb 0%, #06b6d4 100%);
  --gradient-dark: linear-gradient(150deg, #0b1b3f 0%, #123a8f 55%, #0e7490 100%);
  --maxw: 1200px;
  --header-h: 72px;
}

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

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

body {
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.75;
  font-size: 16px;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: color .25s ease; }
a:hover { color: var(--accent); }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

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

.container { width: min(var(--maxw), 92%); margin: 0 auto; }
.section { padding: 96px 0; }
.section.alt { background: var(--bg); }
.section.dark { background: var(--gradient-dark); color: #dbe7ff; }
.section.dark h2, .section.dark h3 { color: #fff; }

/* ---------- 通用标题块 ---------- */
.section-head { max-width: 720px; margin: 0 auto 60px; text-align: center; }
.section-head .eyebrow {
  display: inline-block; padding: 6px 18px; margin-bottom: 18px;
  font-size: 13px; font-weight: 500; letter-spacing: 2px;
  color: var(--primary); background: rgba(37, 99, 235, .09);
  border-radius: 999px;
}
.section.dark .section-head .eyebrow { color: var(--accent-2); background: rgba(34, 211, 238, .12); }
.section-head h2 { font-size: clamp(26px, 3.4vw, 38px); margin-bottom: 16px; }
.section-head p { color: var(--text-light); font-size: 17px; }
.section.dark .section-head p { color: #b8c9ea; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 32px; border-radius: 999px; font-size: 16px; font-weight: 500;
  transition: transform .25s ease, box-shadow .25s ease, background .25s ease, color .25s ease;
  white-space: nowrap;
}
.btn-primary { background: var(--gradient); color: #fff; box-shadow: 0 10px 26px rgba(37, 99, 235, .35); }
.btn-primary:hover { color: #fff; transform: translateY(-3px); box-shadow: 0 16px 34px rgba(37, 99, 235, .45); }
.btn-ghost { border: 1.5px solid rgba(255,255,255,.55); color: #fff; }
.btn-ghost:hover { background: rgba(255,255,255,.12); color: #fff; transform: translateY(-3px); }
.btn-outline { border: 1.5px solid var(--primary); color: var(--primary); }
.btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-3px); }
.btn-sm { padding: 9px 22px; font-size: 14px; }

/* ============================================================
   头部 / 导航
   ============================================================ */
.site-header {
  position: sticky; top: 0; z-index: 1000;
  height: var(--header-h);
  background: rgba(255,255,255,.86);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: box-shadow .3s ease, border-color .3s ease;
}
.site-header.scrolled { box-shadow: var(--shadow-sm); border-color: var(--border); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 100%; }

.brand { display: flex; align-items: center; gap: 11px; }
.brand-logo {
  width: 42px; height: 42px; border-radius: 12px; flex: none;
  background: var(--gradient);
  display: grid; place-items: center;
  color: #fff; font-size: 20px; font-weight: 800;
  box-shadow: 0 8px 18px rgba(37, 99, 235, .35);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-name { font-size: 18px; font-weight: 700; color: var(--ink); }
.brand-sub { font-size: 11px; color: var(--text-light); letter-spacing: 1px; }

.nav-menu { display: flex; align-items: center; gap: 6px; }
.nav-menu a {
  position: relative; padding: 9px 16px; border-radius: 8px;
  color: var(--text); font-size: 15px; font-weight: 500;
}
.nav-menu a::after {
  content: ""; position: absolute; left: 50%; bottom: 2px; width: 0; height: 2px;
  background: var(--gradient); border-radius: 2px;
  transition: width .28s ease, left .28s ease;
}
.nav-menu a:hover { color: var(--primary); background: rgba(37,99,235,.05); }
.nav-menu a:hover::after, .nav-menu a.active::after { width: 60%; left: 20%; }
.nav-menu a.active { color: var(--primary); }
.nav-cta { margin-left: 12px; }

.nav-toggle { display: none; width: 44px; height: 44px; position: relative; }
.nav-toggle span {
  position: absolute; left: 11px; right: 11px; height: 2px;
  background: var(--ink); border-radius: 2px; transition: .3s;
}
.nav-toggle span:nth-child(1) { top: 15px; }
.nav-toggle span:nth-child(2) { top: 21px; }
.nav-toggle span:nth-child(3) { top: 27px; }
.nav-toggle.open span:nth-child(1) { top: 21px; transform: rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { top: 21px; transform: rotate(-45deg); }

/* ============================================================
   Hero 主视觉
   ============================================================ */
.hero {
  position: relative; color: #fff; overflow: hidden;
  background: var(--gradient-dark);
  padding: 108px 0 120px;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(120, 170, 255, .07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 170, 255, .07) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: radial-gradient(ellipse 90% 80% at 50% 0%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 90% 80% at 50% 0%, #000 30%, transparent 75%);
}
.hero::after {
  content: ""; position: absolute; width: 620px; height: 620px; border-radius: 50%;
  right: -180px; top: -220px;
  background: radial-gradient(circle, rgba(34,211,238,.35), transparent 65%);
  pointer-events: none;
}
.hero .container { position: relative; z-index: 2; display: grid; grid-template-columns: 1.05fr .95fr; gap: 60px; align-items: center; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 18px; border-radius: 999px; margin-bottom: 26px;
  font-size: 13.5px; color: #cfe6ff;
  background: rgba(255,255,255,.08); border: 1px solid rgba(160, 200, 255, .25);
}
.hero-badge .dot { width: 8px; height: 8px; border-radius: 50%; background: #22d3ee; box-shadow: 0 0 0 4px rgba(34,211,238,.25); animation: pulse 2s infinite; }
.hero h1 { font-size: clamp(32px, 4.6vw, 54px); color: #fff; margin-bottom: 22px; letter-spacing: .5px; }
.hero h1 .hl { background: linear-gradient(90deg, #67e8f9, #93c5fd); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p.lead { font-size: 18px; color: #c4d6f5; margin-bottom: 36px; max-width: 560px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 44px; }
.hero-stats { display: flex; gap: 42px; flex-wrap: wrap; }
.hero-stats .num { font-size: 30px; font-weight: 800; color: #fff; }
.hero-stats .num em { font-style: normal; color: var(--accent-2); }
.hero-stats .lab { font-size: 13.5px; color: #9fb8e2; }

.hero-visual { position: relative; }
.hero-visual img {
  width: 100%; border-radius: 20px;
  box-shadow: 0 40px 80px rgba(2, 12, 35, .55);
  border: 1px solid rgba(160, 200, 255, .22);
}
.hero-card {
  position: absolute; padding: 14px 20px; border-radius: 14px;
  background: rgba(255,255,255,.95); color: var(--ink);
  box-shadow: var(--shadow-lg); font-size: 13.5px; font-weight: 500;
  display: flex; align-items: center; gap: 10px;
  animation: floaty 4.5s ease-in-out infinite;
}
.hero-card .ic { width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center; color: #fff; font-size: 16px; flex: none; }
.hero-card.c1 { left: -26px; bottom: 42px; }
.hero-card.c1 .ic { background: var(--gradient); }
.hero-card.c2 { right: -20px; top: 36px; animation-delay: 1.4s; }
.hero-card.c2 .ic { background: linear-gradient(135deg, #06b6d4, #22d3ee); }

@keyframes pulse { 0%,100% { box-shadow: 0 0 0 4px rgba(34,211,238,.25);} 50% { box-shadow: 0 0 0 8px rgba(34,211,238,.05);} }
@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: 26px; }
.feature-card {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 34px 28px;
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
  position: relative; overflow: hidden;
}
.feature-card::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 4px;
  background: var(--gradient); transform: scaleX(0); transform-origin: left;
  transition: transform .35s ease;
}
.feature-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); border-color: transparent; }
.feature-card:hover::before { transform: scaleX(1); }
.feature-icon {
  width: 58px; height: 58px; border-radius: 15px; margin-bottom: 22px;
  display: grid; place-items: center; font-size: 26px;
  background: linear-gradient(135deg, rgba(37,99,235,.12), rgba(6,182,212,.12));
  color: var(--primary);
  transition: transform .3s ease;
}
.feature-card:hover .feature-icon { transform: rotate(-6deg) scale(1.06); }
.feature-card h3 { font-size: 19px; margin-bottom: 11px; }
.feature-card p { font-size: 14.5px; color: var(--text-light); }

/* ============================================================
   服务介绍
   ============================================================ */
.services-wrap { display: grid; grid-template-columns: .95fr 1.05fr; gap: 64px; align-items: center; }
.services-photo { position: relative; }
.services-photo img { border-radius: 20px; box-shadow: var(--shadow-lg); }
.services-photo .exp {
  position: absolute; right: -18px; bottom: -24px;
  background: var(--gradient); color: #fff;
  border-radius: 18px; padding: 22px 28px; text-align: center;
  box-shadow: 0 18px 40px rgba(37,99,235,.4);
}
.services-photo .exp b { display: block; font-size: 34px; line-height: 1.1; }
.services-photo .exp span { font-size: 13px; opacity: .92; }

.service-list { display: grid; gap: 18px; margin-top: 28px; }
.service-item {
  display: flex; gap: 18px; padding: 22px 24px;
  border: 1px solid var(--border); border-radius: 14px;
  background: var(--white);
  transition: transform .28s ease, box-shadow .28s ease;
}
.service-item:hover { transform: translateX(8px); box-shadow: var(--shadow-sm); }
.service-item .num {
  flex: none; width: 46px; height: 46px; border-radius: 12px;
  display: grid; place-items: center; font-weight: 800; color: #fff;
  background: var(--gradient);
}
.service-item h3 { font-size: 17.5px; margin-bottom: 5px; }
.service-item p { font-size: 14.5px; color: var(--text-light); }

/* ---------- 详细内容区 ---------- */
.detail-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.detail-card {
  border-radius: var(--radius); overflow: hidden; background: var(--white);
  border: 1px solid var(--border);
  transition: transform .3s ease, box-shadow .3s ease;
}
.detail-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); }
.detail-card .pic { overflow: hidden; aspect-ratio: 16 / 9; }
.detail-card .pic img { width: 100%; height: 100%; object-fit: cover; transition: transform .55s ease; }
.detail-card:hover .pic img { transform: scale(1.08); }
.detail-card .body { padding: 26px 26px 30px; }
.detail-card .tag { display: inline-block; font-size: 12.5px; color: var(--primary); background: rgba(37,99,235,.08); padding: 4px 12px; border-radius: 999px; margin-bottom: 13px; }
.detail-card h3 { font-size: 18.5px; margin-bottom: 10px; }
.detail-card p { font-size: 14.5px; color: var(--text-light); margin-bottom: 16px; }
.detail-card .more { font-size: 14.5px; font-weight: 500; }
.detail-card .more::after { content: " →"; transition: margin-left .25s; }
.detail-card:hover .more::after { margin-left: 6px; }

/* ---------- 数据条 ---------- */
.stats-band { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
.stats-band .num { font-size: clamp(30px, 4vw, 44px); font-weight: 800; color: #fff; }
.stats-band .num em { font-style: normal; color: var(--accent-2); }
.stats-band .lab { color: #b8c9ea; font-size: 14.5px; margin-top: 4px; }
.stats-band > div { padding: 18px 10px; position: relative; }
.stats-band > div:not(:last-child)::after { content: ""; position: absolute; right: -12px; top: 22%; height: 56%; width: 1px; background: rgba(255,255,255,.18); }

/* ---------- 工作流程 ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; counter-reset: step; }
.step { text-align: center; position: placeholder; position: relative; padding: 10px; }
.step .ball {
  width: 76px; height: 76px; margin: 0 auto 22px; border-radius: 50%;
  display: grid; place-items: center; font-size: 30px;
  background: var(--white); border: 2px solid var(--border);
  box-shadow: var(--shadow-sm); transition: .3s; position: relative; z-index: 2;
}
.step::after {
  content: ""; position: absolute; top: 38px; left: calc(50% + 50px); right: calc(-50% + 50px);
  height: 2px; background: repeating-linear-gradient(90deg, #bcd0f2 0 8px, transparent 8px 16px);
  z-index: 1;
}
.step:last-child::after { display: none; }
.step:hover .ball { background: var(--gradient); border-color: transparent; transform: translateY(-6px); box-shadow: 0 14px 28px rgba(37,99,235,.3); }
.step h3 { font-size: 17.5px; margin-bottom: 8px; }
.step p { font-size: 14px; color: var(--text-light); }

/* ---------- 用户评价 ---------- */
.reviews-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.review-card { background: rgba(255,255,255,.06); border: 1px solid rgba(160,200,255,.18); border-radius: var(--radius); padding: 32px 30px; backdrop-filter: blur(6px); }
.review-card .stars { color: #fbbf24; letter-spacing: 3px; margin-bottom: 16px; font-size: 15px; }
.review-card p { color: #d3e1f9; font-size: 15px; margin-bottom: 24px; }
.review-user { display: flex; align-items: center; gap: 13px; }
.review-user img { width: 48px; height: 48px; border-radius: 50%; border: 2px solid rgba(255,255,255,.3); }
.review-user b { display: block; color: #fff; font-size: 15.5px; }
.review-user span { font-size: 13px; color: #9fb8e2; }

/* ---------- FAQ ---------- */
.faq-list { max-width: 840px; margin: 0 auto; display: grid; gap: 16px; }
.faq-item { border: 1px solid var(--border); border-radius: 14px; background: var(--white); overflow: hidden; transition: box-shadow .25s, border-color .25s; }
.faq-item.open { box-shadow: var(--shadow-sm); border-color: rgba(37,99,235,.35); }
.faq-q { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 22px 26px; text-align: left; font-size: 16.5px; font-weight: 600; color: var(--ink); }
.faq-q .faq-icon { flex: none; width: 28px; height: 28px; border-radius: 50%; background: var(--bg-soft); color: var(--primary); display: grid; place-items: center; font-size: 18px; transition: transform .3s, background .3s, color .3s; }
.faq-item.open .faq-icon { transform: rotate(45deg); background: var(--gradient); color: #fff; }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
.faq-a p { padding: 0 26px 24px; font-size: 15px; color: var(--text-light); }

/* ---------- CTA ---------- */
.cta-box {
  position: relative; overflow: hidden; text-align: center;
  border-radius: 26px; padding: 78px 30px; color: #fff;
  background: var(--gradient-dark);
}
.cta-box::before, .cta-box::after {
  content: ""; position: absolute; border-radius: 50%;
  background: radial-gradient(circle, rgba(34,211,238,.35), transparent 70%);
}
.cta-box::before { width: 420px; height: 420px; left: -140px; top: -180px; }
.cta-box::after { width: 420px; height: 420px; right: -140px; bottom: -200px; }
.cta-box > * { position: relative; z-index: 2; }
.cta-box h2 { color: #fff; font-size: clamp(26px, 3.2vw, 38px); margin-bottom: 16px; }
.cta-box p { color: #c4d6f5; font-size: 17px; max-width: 600px; margin: 0 auto 34px; }
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ============================================================
   内页通用
   ============================================================ */
.page-hero {
  background: var(--gradient-dark); color: #fff;
  padding: 84px 0 92px; position: relative; overflow: hidden;
}
.page-hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(120,170,255,.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120,170,255,.07) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 0%, #000, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 0%, #000, transparent 80%);
}
.page-hero .container { position: relative; z-index: 2; text-align: center; }
.page-hero h1 { color: #fff; font-size: clamp(30px, 4vw, 44px); margin-bottom: 14px; }
.page-hero p { color: #c4d6f5; font-size: 17px; max-width: 640px; margin: 0 auto; }
.breadcrumb { margin-top: 24px; font-size: 14px; color: #9fb8e2; }
.breadcrumb a { color: #c4d6f5; }
.breadcrumb a:hover { color: #fff; }
.breadcrumb span.sep { margin: 0 9px; opacity: .6; }

/* ---------- 关于页 ---------- */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.about-grid img { border-radius: 20px; box-shadow: var(--shadow-lg); }
.about-text h2 { font-size: clamp(24px, 3vw, 34px); margin-bottom: 20px; }
.about-text p { margin-bottom: 16px; color: var(--text-light); }
.about-points { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 24px; }
.about-points li { display: flex; gap: 10px; align-items: flex-start; font-size: 15px; color: var(--ink); font-weight: 500; }
.about-points li::before { content: "✓"; flex: none; width: 22px; height: 22px; border-radius: 50%; background: var(--gradient); color: #fff; font-size: 12px; display: grid; place-items: center; margin-top: 3px; }

.value-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.value-card { text-align: center; padding: 40px 30px; border-radius: var(--radius); background: var(--white); border: 1px solid var(--border); transition: .3s; }
.value-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); }
.value-card .vi { width: 66px; height: 66px; margin: 0 auto 20px; border-radius: 18px; background: linear-gradient(135deg, rgba(37,99,235,.12), rgba(6,182,212,.12)); display: grid; place-items: center; font-size: 28px; }
.value-card h3 { margin-bottom: 10px; font-size: 19px; }
.value-card p { font-size: 14.5px; color: var(--text-light); }

.timeline { position: relative; max-width: 860px; margin: 0 auto; padding-left: 34px; }
.timeline::before { content: ""; position: absolute; left: 8px; top: 6px; bottom: 6px; width: 2px; background: linear-gradient(var(--primary), var(--accent)); }
.tl-item { position: relative; padding: 0 0 38px 26px; }
.tl-item::before { content: ""; position: absolute; left: -34px; top: 6px; width: 18px; height: 18px; border-radius: 50%; background: var(--white); border: 4px solid var(--primary); box-shadow: 0 0 0 4px rgba(37,99,235,.12); }
.tl-item b { display: inline-block; font-size: 15px; color: var(--primary); margin-bottom: 6px; }
.tl-item h3 { font-size: 18px; margin-bottom: 6px; }
.tl-item p { font-size: 14.5px; color: var(--text-light); }

/* ---------- 产品页 ---------- */
.product-filter { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-bottom: 46px; }
.filter-btn { padding: 9px 24px; border-radius: 999px; border: 1.5px solid var(--border); color: var(--text); font-size: 14.5px; background: var(--white); transition: .25s; }
.filter-btn.active, .filter-btn:hover { background: var(--gradient); color: #fff; border-color: transparent; }
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.product-card { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; background: var(--white); transition: .3s; display: flex; flex-direction: column; }
.product-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); }
.product-card .pic { position: relative; aspect-ratio: 16/9; overflow: hidden; }
.product-card .pic img { width: 100%; height: 100%; object-fit: cover; transition: transform .55s; }
.product-card:hover .pic img { transform: scale(1.07); }
.product-card .badge { position: absolute; top: 14px; left: 14px; background: var(--gradient); color: #fff; font-size: 12.5px; padding: 4px 13px; border-radius: 999px; }
.product-card .pbody { padding: 26px; display: flex; flex-direction: column; flex: 1; }
.product-card h3 { font-size: 19px; margin-bottom: 9px; }
.product-card p { font-size: 14.5px; color: var(--text-light); margin-bottom: 18px; flex: 1; }
.product-meta { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 20px; }
.product-meta span { font-size: 12.5px; color: var(--primary); background: rgba(37,99,235,.08); padding: 3px 11px; border-radius: 6px; }
.product-card .pfoot { display: flex; align-items: center; justify-content: space-between; }
.product-card .price { font-size: 20px; font-weight: 800; color: var(--ink); }
.product-card .price small { font-size: 13px; color: var(--text-light); font-weight: 400; }

.plan-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; align-items: stretch; }
.plan { background: var(--white); border: 1px solid var(--border); border-radius: 20px; padding: 40px 34px; display: flex; flex-direction: column; transition: .3s; position: relative; }
.plan.featured { border: 2px solid var(--primary); box-shadow: var(--shadow); transform: scale(1.03); }
.plan.featured .plan-tag { position: absolute; top: -14px; left: 50%; transform: translateX(-50%); background: var(--gradient); color: #fff; font-size: 13px; padding: 5px 18px; border-radius: 999px; }
.plan:hover { transform: translateY(-8px); box-shadow: var(--shadow); }
.plan.featured:hover { transform: scale(1.03) translateY(-8px); }
.plan h3 { font-size: 21px; margin-bottom: 8px; }
.plan .plan-desc { font-size: 14px; color: var(--text-light); margin-bottom: 22px; }
.plan .plan-price { font-size: 40px; font-weight: 800; color: var(--ink); margin-bottom: 4px; }
.plan .plan-price small { font-size: 15px; font-weight: 400; color: var(--text-light); }
.plan ul { margin: 24px 0 30px; display: grid; gap: 12px; flex: 1; }
.plan li { display: flex; gap: 10px; font-size: 14.5px; color: var(--text); }
.plan li::before { content: "✓"; color: var(--primary); font-weight: 700; }
.plan li.off { color: #b3bed0; text-decoration: line-through; }
.plan li.off::before { content: "✕"; color: #c3ccdb; }
.plan .btn { width: 100%; }

/* ---------- 新闻页 ---------- */
.news-layout { display: grid; grid-template-columns: 1fr 320px; gap: 48px; align-items: start; }
.news-feature { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; margin-bottom: 30px; transition: .3s; }
.news-feature:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.news-feature .pic { aspect-ratio: 16/10; overflow: hidden; }
.news-feature .pic img { width: 100%; height: 100%; object-fit: cover; }
.news-feature .nbody { padding: 34px 34px 30px 0; display: flex; flex-direction: column; justify-content: center; }
.news-feature .nbody { padding-right: 34px; }
.news-feature .meta, .news-row .meta { font-size: 13px; color: var(--text-light); display: flex; gap: 16px; margin-bottom: 12px; flex-wrap: wrap; }
.news-feature h2 { font-size: 23px; margin-bottom: 12px; }
.news-feature h2 a { color: var(--ink); }
.news-feature h2 a:hover { color: var(--primary); }
.news-feature p { font-size: 14.5px; color: var(--text-light); margin-bottom: 18px; }

.news-row { display: grid; grid-template-columns: 240px 1fr; gap: 24px; padding: 24px 0; border-bottom: 1px solid var(--border); transition: .25s; }
.news-row:hover { padding-left: 8px; }
.news-row .pic { border-radius: 12px; overflow: hidden; aspect-ratio: 16/10; }
.news-row .pic img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.news-row:hover .pic img { transform: scale(1.08); }
.news-row h3 { font-size: 18px; margin-bottom: 8px; }
.news-row h3 a { color: var(--ink); }
.news-row h3 a:hover { color: var(--primary); }
.news-row p { font-size: 14px; color: var(--text-light); margin-bottom: 10px; }
.news-row .more { font-size: 14px; font-weight: 500; }

.pagination { display: flex; gap: 8px; justify-content: center; margin-top: 44px; }
.pagination a { width: 42px; height: 42px; border-radius: 10px; border: 1px solid var(--border); display: grid; place-items: center; color: var(--text); font-size: 15px; background: var(--white); }
.pagination a.active, .pagination a:hover { background: var(--gradient); color: #fff; border-color: transparent; }

.sidebar-widget { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; margin-bottom: 28px; }
.sidebar-widget h3 { font-size: 17.5px; margin-bottom: 18px; padding-bottom: 14px; border-bottom: 2px solid var(--bg-soft); position: relative; }
.sidebar-widget h3::after { content: ""; position: absolute; left: 0; bottom: -2px; width: 46px; height: 2px; background: var(--gradient); }
.hot-list li { padding: 12px 0; border-bottom: 1px dashed var(--border); display: flex; gap: 12px; align-items: flex-start; }
.hot-list li:last-child { border-bottom: none; }
.hot-list .rk { flex: none; width: 24px; height: 24px; border-radius: 7px; background: var(--bg-soft); color: var(--primary); font-size: 13px; font-weight: 700; display: grid; place-items: center; margin-top: 2px; }
.hot-list li:nth-child(-n+3) .rk { background: var(--gradient); color: #fff; }
.hot-list a { color: var(--text); font-size: 14.5px; line-height: 1.5; }
.hot-list a:hover { color: var(--primary); }
.hot-list .date { font-size: 12.5px; color: #a4b1c6; margin-top: 3px; }
.tag-cloud { display: flex; flex-wrap: wrap; gap: 9px; }
.tag-cloud a { font-size: 13px; padding: 6px 14px; border-radius: 999px; background: var(--bg-soft); color: var(--text); }
.tag-cloud a:hover { background: var(--gradient); color: #fff; }
.sidebar-contact { background: var(--gradient-dark); color: #fff; border: none; }
.sidebar-contact h3 { color: #fff; border-bottom-color: rgba(255,255,255,.2); }
.sidebar-contact h3::after { background: var(--accent-2); }
.sidebar-contact p { font-size: 14px; color: #c4d6f5; margin-bottom: 18px; }
.sidebar-contact .btn { width: 100%; background: #fff; color: var(--primary); }
.sidebar-contact .btn:hover { background: var(--accent-2); color: var(--ink); }

/* ---------- 新闻详情 ---------- */
.article-layout { display: grid; grid-template-columns: 1fr 320px; gap: 48px; align-items: start; }
.article-body { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); padding: 46px 50px 50px; }
.article-meta { display: flex; gap: 18px; flex-wrap: wrap; font-size: 13.5px; color: var(--text-light); padding-bottom: 22px; border-bottom: 1px solid var(--border); margin-bottom: 30px; }
.article-meta span { display: inline-flex; align-items: center; gap: 6px; }
.article-content h2 { font-size: 23px; margin: 36px 0 16px; }
.article-content h3 { font-size: 19px; margin: 28px 0 12px; }
.article-content p { margin-bottom: 18px; color: #3d4c68; font-size: 16px; }
.article-content img { border-radius: 14px; margin: 26px 0; box-shadow: var(--shadow-sm); }
.article-content ul { margin: 0 0 18px 0; display: grid; gap: 10px; }
.article-content ul li { position: relative; padding-left: 26px; color: #3d4c68; }
.article-content ul li::before { content: "●"; position: absolute; left: 0; color: var(--accent); font-size: 12px; top: 4px; }
.article-content blockquote { border-left: 4px solid var(--primary); background: var(--bg); padding: 18px 24px; border-radius: 0 12px 12px 0; margin: 24px 0; color: var(--text); font-style: italic; }
.article-tags { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 34px; padding-top: 24px; border-top: 1px solid var(--border); }
.article-tags a { font-size: 13px; padding: 5px 14px; border-radius: 999px; background: var(--bg-soft); color: var(--text); }
.article-tags a:hover { background: var(--gradient); color: #fff; }
.article-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 26px; }
.article-nav a { display: block; padding: 18px 22px; border: 1px solid var(--border); border-radius: 12px; font-size: 14px; background: var(--white); transition: .25s; }
.article-nav a:hover { border-color: var(--primary); transform: translateY(-2px); }
.article-nav small { display: block; color: var(--text-light); margin-bottom: 4px; }
.article-nav .next { text-align: right; }

/* ---------- 联系页 ---------- */
.contact-layout { display: grid; grid-template-columns: .9fr 1.1fr; gap: 48px; align-items: start; }
.contact-cards { display: grid; gap: 18px; }
.contact-card { display: flex; gap: 18px; padding: 26px; background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); transition: .3s; }
.contact-card:hover { box-shadow: var(--shadow-sm); transform: translateX(6px); }
.contact-card .ci { flex: none; width: 54px; height: 54px; border-radius: 14px; background: var(--gradient); color: #fff; display: grid; place-items: center; font-size: 23px; }
.contact-card h3 { font-size: 17px; margin-bottom: 6px; }
.contact-card p { font-size: 14.5px; color: var(--text-light); }
.contact-form { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); padding: 40px; box-shadow: var(--shadow-sm); }
.contact-form h2 { font-size: 24px; margin-bottom: 8px; }
.contact-form > p { color: var(--text-light); font-size: 14.5px; margin-bottom: 26px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 14px; font-weight: 500; color: var(--ink); margin-bottom: 7px; }
.form-group label i { color: #ef4444; font-style: normal; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 13px 16px; border: 1.5px solid var(--border); border-radius: 10px;
  font-size: 15px; font-family: inherit; color: var(--ink); background: #fbfdff;
  transition: border-color .25s, box-shadow .25s, background .25s;
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none; border-color: var(--primary); background: #fff;
  box-shadow: 0 0 0 4px rgba(37,99,235,.1);
}
.form-notice { font-size: 13px; color: var(--text-light); margin: 4px 0 20px; }
.form-success { display: none; padding: 14px 18px; border-radius: 10px; background: #ecfdf5; color: #047857; font-size: 14.5px; margin-bottom: 18px; border: 1px solid #a7f3d0; }
.form-success.show { display: block; animation: fadeUp .5s ease; }

.map-embed { margin-top: 50px; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm); border: 1px solid var(--border); }
.map-embed img { width: 100%; height: 360px; object-fit: cover; }

/* ============================================================
   页脚
   ============================================================ */
.site-footer { background: #0a1428; color: #9fb2d6; padding: 76px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 44px; padding-bottom: 54px; border-bottom: 1px solid rgba(255,255,255,.08); }
.footer-brand .brand-name { color: #fff; }
.footer-brand p { font-size: 14px; margin: 18px 0 20px; line-height: 1.8; }
.footer-social { display: flex; gap: 11px; }
.footer-social a { width: 38px; height: 38px; border-radius: 10px; background: rgba(255,255,255,.07); display: grid; place-items: center; color: #bccdea; font-size: 16px; transition: .25s; }
.footer-social a:hover { background: var(--gradient); color: #fff; transform: translateY(-3px); }
.site-footer h4 { color: #fff; font-size: 16px; margin-bottom: 20px; }
.footer-links li { margin-bottom: 12px; }
.footer-links a { color: #9fb2d6; font-size: 14.5px; }
.footer-links a:hover { color: var(--accent-2); padding-left: 5px; }
.footer-contact li { display: flex; gap: 11px; font-size: 14.5px; margin-bottom: 14px; align-items: flex-start; }
.footer-contact .fi { color: var(--accent-2); margin-top: 3px; }
.footer-bottom { padding: 24px 0; display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap; font-size: 13.5px; }
.footer-bottom a { color: #9fb2d6; }
.footer-bottom a:hover { color: #fff; }
.footer-bottom .links { display: flex; gap: 20px; flex-wrap: wrap; }

/* ---------- 返回顶部 ---------- */
.back-top {
  position: fixed; right: 26px; bottom: 30px; z-index: 900;
  width: 48px; height: 48px; border-radius: 14px;
  background: var(--gradient); color: #fff; font-size: 20px;
  display: grid; place-items: center;
  box-shadow: 0 12px 28px rgba(37,99,235,.4);
  opacity: 0; visibility: hidden; transform: translateY(16px);
  transition: .3s;
}
.back-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.back-top:hover { transform: translateY(-4px); }

/* ---------- 滚动渐入动画 ---------- */
.reveal { opacity: 0; transform: translateY(36px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .1s; }
.reveal.d2 { transition-delay: .2s; }
.reveal.d3 { transition-delay: .3s; }
.reveal.d4 { transition-delay: .4s; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(16px);} to { opacity: 1; transform: none;} }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .detail-grid, .reviews-grid, .value-grid { grid-template-columns: 1fr 1fr; }
  .steps { grid-template-columns: repeat(2, 1fr); gap: 40px 26px; }
  .step::after { display: none; }
  .product-grid, .plan-grid { grid-template-columns: 1fr 1fr; }
  .plan.featured { transform: none; }
  .plan.featured:hover { transform: translateY(-8px); }
  .hero .container { grid-template-columns: 1fr; gap: 64px; }
  .hero-visual { max-width: 560px; margin: 0 auto; }
  .services-wrap, .about-grid { grid-template-columns: 1fr; gap: 50px; }
  .services-photo { max-width: 600px; }
  .news-layout, .article-layout, .contact-layout { grid-template-columns: 1fr; }
  .article-layout aside, .news-layout aside { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .section { padding: 68px 0; }
  .nav-toggle { display: block; }
  .nav-menu {
    position: fixed; top: var(--header-h); left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--white); border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
    padding: 10px 5%; max-height: 0; overflow: hidden;
    transition: max-height .35s ease;
  }
  .nav-menu.open { max-height: 460px; padding: 12px 5% 22px; }
  .nav-menu a { padding: 14px 10px; border-radius: 0; border-bottom: 1px solid var(--bg-soft); }
  .nav-menu a::after { display: none; }
  .nav-cta { margin: 14px 0 0; text-align: center; }

  .hero { padding: 70px 0 90px; }
  .hero-stats { gap: 28px; }
  .hero-card.c1 { left: 0; }
  .hero-card.c2 { right: 0; }
  .features-grid { grid-template-columns: 1fr; }
  .detail-grid, .reviews-grid, .value-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .stats-band { grid-template-columns: repeat(2, 1fr); gap: 30px 0; }
  .stats-band > div:nth-child(2)::after { display: none; }
  .product-grid, .plan-grid { grid-template-columns: 1fr; }
  .news-feature { grid-template-columns: 1fr; }
  .news-feature .nbody { padding: 0 24px 28px; }
  .news-row { grid-template-columns: 1fr; }
  .article-body { padding: 30px 22px; }
  .article-layout aside, .news-layout aside { grid-template-columns: 1fr; }
  .article-nav { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .contact-form { padding: 28px 22px; }
  .about-points { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .footer-bottom .links { justify-content: center; }
  .cta-box { padding: 58px 22px; }
}

@media (max-width: 420px) {
  .hero-actions .btn { width: 100%; }
  .hero-stats { gap: 22px; }
  .hero-card { display: none; }
}

/* 尊重减少动态偏好 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}