/* 123Router 营销站样式 · 阿里云产品详情页风格 */
:root {
  --orange: #ff6a00;
  --orange-d: #e85d00;
  --ink: #1d2129;
  --ink-2: #4e5969;
  --ink-3: #86909c;
  --line: #e8ebf0;
  --bg-soft: #f5f7fa;
  --blue: #1a2b6b;
  --radius: 12px;
  --shadow: 0 6px 24px rgba(20, 30, 60, .08);
  --shadow-lg: 0 16px 48px rgba(20, 30, 60, .14);
  --maxw: 1180px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  line-height: 1.7;
  background: #fff;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
code { font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace; background: rgba(120,130,150,.14); padding: 1px 6px; border-radius: 5px; font-size: .92em; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* 按钮 */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  border-radius: 8px; font-weight: 600; cursor: pointer; border: 1.5px solid transparent;
  transition: all .2s ease; white-space: nowrap; font-size: 15px; padding: 11px 22px;
}
.btn.sm { padding: 7px 16px; font-size: 14px; }
.btn.lg { padding: 14px 30px; font-size: 17px; }
.btn-primary { background: var(--orange); color: #fff; box-shadow: 0 8px 20px rgba(255,106,0,.28); }
.btn-primary:hover { background: var(--orange-d); transform: translateY(-2px); }
.btn-outline { border-color: var(--orange); color: var(--orange); background: #fff; }
.btn-outline:hover { background: #fff5ec; }
.btn-ghost { color: var(--ink-2); }
.btn-ghost:hover { color: var(--orange); }
.btn-white { background: #fff; color: var(--blue); box-shadow: 0 8px 24px rgba(0,0,0,.18); }
.btn-white:hover { transform: translateY(-2px); }
.btn-outline-light { border-color: rgba(255,255,255,.7); color: #fff; }
.btn-outline-light:hover { background: rgba(255,255,255,.12); }

/* 顶部导航 */
.nav {
  position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,.94);
  backdrop-filter: blur(10px); border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; height: 64px; gap: 28px; }
.brand { display: flex; align-items: center; gap: 10px; }
.logo-mark {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: 8px; background: var(--orange);
  color: #fff; font-weight: 800; font-size: 13px; letter-spacing: -.5px;
}
.logo-text { font-weight: 800; font-size: 18px; line-height: 1.1; }
.logo-text em { display: block; font-style: normal; font-weight: 500; font-size: 11px; color: var(--ink-3); letter-spacing: .5px; }
.nav-links { display: flex; gap: 22px; margin-left: auto; }
.nav-links a { color: var(--ink-2); font-size: 15px; font-weight: 500; transition: color .15s; }
.nav-links a:hover { color: var(--orange); }
.nav-cta { display: flex; gap: 20px; }

/* Hero */
.hero { background: linear-gradient(135deg, #101a3c 0%, #1a2b6b 55%, #25317a 100%); color: #fff; position: relative; overflow: hidden; }
.hero::after { content: ""; position: absolute; right: -80px; top: -80px; width: 420px; height: 420px; border-radius: 50%; background: radial-gradient(circle, rgba(255,106,0,.35), transparent 68%); }
.hero-inner { display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; padding: 78px 24px 84px; position: relative; z-index: 1; }
.tag-pill { display: inline-block; background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.22); padding: 6px 14px; border-radius: 30px; font-size: 13px; margin-bottom: 22px; }
.hero h1 { font-size: 44px; line-height: 1.25; font-weight: 800; letter-spacing: -.5px; }
.hero .hl { color: #ffb066; }
.lead { margin: 20px 0 28px; font-size: 17px; color: rgba(255,255,255,.82); max-width: 560px; }
.lead b { color: #fff; }
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-points { list-style: none; margin-top: 26px; display: flex; flex-wrap: wrap; gap: 10px 26px; }
.hero-points li { color: rgba(255,255,255,.82); font-size: 14px; padding-left: 22px; position: relative; }
.hero-points li::before { content: "✓"; position: absolute; left: 0; color: #6ee7a8; font-weight: 800; }

/* Hero 架构卡 */
.arch-card { background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.16); border-radius: 16px; padding: 22px; backdrop-filter: blur(6px); box-shadow: var(--shadow-lg); }
.arch-title { text-align: center; font-size: 13px; color: rgba(255,255,255,.7); margin-bottom: 16px; letter-spacing: 1px; }
.arch-flow { display: flex; flex-direction: column; align-items: center; gap: 12px; }
.arch-apps, .arch-up { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }
.arch-apps span, .arch-up span { background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.16); padding: 5px 12px; border-radius: 7px; font-size: 13px; }
.arch-arrow { color: rgba(255,255,255,.5); font-size: 18px; }
.arch-hub { width: 100%; text-align: center; background: linear-gradient(90deg, var(--orange), #ff8f3c); border-radius: 10px; padding: 14px; }
.arch-hub b { display: block; font-size: 19px; color: #fff; }
.arch-hub em { font-style: normal; font-size: 12px; color: rgba(255,255,255,.92); }
.arch-up span:last-child { background: rgba(110,231,168,.18); border-color: rgba(110,231,168,.4); }

/* 数据条 */
.stats { background: #fff; border-bottom: 1px solid var(--line); }
.stats-inner { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; padding: 26px 24px; text-align: center; }
.stat b { display: block; font-size: 30px; color: var(--orange); font-weight: 800; }
.stat span { font-size: 13px; color: var(--ink-2); }

/* 通用 section */
.section { padding: 78px 0; }
.sec-title { font-size: 32px; font-weight: 800; text-align: center; letter-spacing: -.3px; }
.sec-sub { text-align: center; color: var(--ink-2); font-size: 16px; max-width: 720px; margin: 14px auto 46px; }

/* 痛点 */
.pain { background: var(--bg-soft); }
.pain-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.pain-item { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; transition: box-shadow .2s, transform .2s; }
.pain-item:hover { box-shadow: var(--shadow); transform: translateY(-3px); }
.pain-item .ico { font-size: 26px; }
.pain-item h4 { font-size: 18px; margin: 12px 0 6px; }
.pain-item p { color: var(--ink-2); font-size: 14.5px; }

/* 核心能力 */
.cap-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.cap-card { border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; background: #fff; position: relative; overflow: hidden; transition: box-shadow .2s, transform .2s; }
.cap-card::before { content: ""; position: absolute; left: 0; top: 0; width: 4px; height: 100%; background: var(--orange); opacity: 0; transition: opacity .2s; }
.cap-card:hover { box-shadow: var(--shadow); transform: translateY(-3px); }
.cap-card:hover::before { opacity: 1; }
.cap-card h3 { font-size: 19px; margin-bottom: 10px; }
.cap-card p { color: var(--ink-2); font-size: 14.5px; }

/* 产品优势 */
.advantage { background: linear-gradient(180deg, #fbfcfe, #f3f6fb); }
.adv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.adv-item { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); }
.adv-item b { display: block; font-size: 17px; margin-bottom: 8px; color: var(--blue); }
.adv-item p { color: var(--ink-2); font-size: 14.5px; }

/* 软件 vs 服务 */
.software { background: var(--blue); color: #fff; }
.software .sec-sub { color: rgba(255,255,255,.78); }
.cmp { background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.14); border-radius: 14px; overflow: hidden; margin-top: 8px; }
.cmp-head, .cmp-row { display: grid; grid-template-columns: 1fr 1.3fr 1.3fr; align-items: center; }
.cmp-head { background: rgba(255,255,255,.1); font-weight: 700; }
.cmp-head span { padding: 15px 18px; font-size: 15px; }
.cmp-head .cmp-col.pro { color: #ffb066; }
.cmp-row { border-top: 1px solid rgba(255,255,255,.1); font-size: 14.5px; }
.cmp-row > span { padding: 14px 18px; }
.cmp-row > span:first-child { font-weight: 700; color: #fff; }
.c-svc { color: rgba(255,255,255,.62); }
.c-pro { background: rgba(255,106,0,.12); color: #fff; font-weight: 600; }
.deliver { margin-top: 30px; background: rgba(255,255,255,.06); border: 1px dashed rgba(255,255,255,.28); border-radius: 12px; padding: 22px 26px; }
.deliver h4 { font-size: 17px; margin-bottom: 12px; color: #ffb066; }
.deliver ul { list-style: none; display: flex; flex-wrap: wrap; gap: 12px; }
.deliver li { background: rgba(255,255,255,.12); padding: 8px 16px; border-radius: 30px; font-size: 14px; }

/* 应用场景 */
.scene-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.scene-item { border: 1px solid var(--line); border-left: 4px solid var(--orange); border-radius: 10px; padding: 22px 24px; background: #fff; }
.scene-item b { display: block; font-size: 17px; margin-bottom: 8px; }
.scene-item p { color: var(--ink-2); font-size: 14.5px; }

/* 快速接入 */
.access { background: var(--bg-soft); }
.access-inner { display: grid; grid-template-columns: 1fr 1.05fr; gap: 48px; align-items: center; }
.access .sec-title { text-align: left; }
.access-left p { color: var(--ink-2); margin: 16px 0 20px; }
.access-steps { list-style: none; display: flex; flex-direction: column; gap: 12px; }
.access-steps li { background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 12px 16px; font-size: 15px; }
.access-steps b { color: var(--orange); font-weight: 800; margin-right: 6px; }
.code { background: #0b1021; color: #d5e3ff; border-radius: 14px; padding: 24px 26px; font-family: "SFMono-Regular", Consolas, monospace; font-size: 14px; line-height: 1.85; overflow-x: auto; box-shadow: var(--shadow-lg); }
.c-kw { color: #ff8f6b; } .c-str { color: #7fd6a8; } .c-cm { color: #6b7a9c; } .c-fn { color: #7db8ff; }

/* 在线实例 */
.demo { background: linear-gradient(135deg, #ff7a18, #ff5000); color: #fff; }
.demo-inner { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; padding: 72px 24px; }
.demo-text h2 { font-size: 30px; margin-bottom: 14px; }
.demo-text p { font-size: 16px; color: rgba(255,255,255,.92); margin-bottom: 26px; }
.browser { background: #fff; border-radius: 12px; box-shadow: 0 24px 60px rgba(80,20,0,.35); overflow: hidden; }
.browser-bar { display: flex; align-items: center; gap: 7px; background: #eef0f4; padding: 11px 14px; }
.dot { width: 11px; height: 11px; border-radius: 50%; display: inline-block; }
.dot.r { background: #ff5f57; } .dot.y { background: #febc2e; } .dot.g { background: #28c840; }
.browser-bar em { margin-left: 10px; font-style: normal; font-size: 12px; color: var(--ink-3); }
.browser-body { padding: 8px 18px 18px; }
.mk-row { display: flex; justify-content: space-between; align-items: center; padding: 14px 4px; border-bottom: 1px solid var(--line); color: var(--ink); }
.mk-row:last-child { border-bottom: 0; }
.mk-name { font-weight: 600; font-size: 15px; }
.mk-heat { font-size: 13px; color: var(--orange); font-weight: 600; }

/* 结尾 CTA */
.final-cta { background: #0f1730; color: #fff; text-align: center; padding: 76px 0; }
.final-inner h2 { font-size: 32px; margin-bottom: 12px; }
.final-inner p { color: rgba(255,255,255,.75); font-size: 16px; max-width: 620px; margin: 0 auto 30px; }
.final-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* 页脚 */
.footer { background: #0b1226; color: rgba(255,255,255,.62); padding: 44px 0 30px; }
.footer-inner { display: grid; grid-template-columns: 1.6fr 1fr 1.2fr; gap: 32px; }
.f-brand { display: flex; gap: 12px; }
.f-brand b { color: #fff; font-size: 17px; }
.f-brand p { font-size: 13.5px; margin-top: 4px; max-width: 340px; }
.f-links { display: flex; flex-direction: column; gap: 10px; }
.f-links a:hover { color: var(--orange); }
.f-contact p { font-size: 13.5px; margin-bottom: 8px; }
.f-contact a { color: var(--orange); }

/* 响应式 */
@media (max-width: 960px) {
  .nav-links { display: none; }
  .hero-inner { grid-template-columns: 1fr; gap: 34px; }
  .hero h1 { font-size: 34px; }
  .stats-inner { grid-template-columns: repeat(2, 1fr); gap: 18px; }
  .pain-grid, .cap-grid, .adv-grid, .scene-grid { grid-template-columns: 1fr 1fr; }
  .access-inner, .demo-inner, .footer-inner { grid-template-columns: 1fr; gap: 30px; }
  .cmp-head, .cmp-row { grid-template-columns: 1fr; }
  .cmp-head span:first-child { display: none; }
  .cmp-head .cmp-col { padding-top: 8px; }
  .cmp-row > span { padding: 8px 18px; }
  .cmp-row > span:first-child { background: rgba(255,255,255,.08); padding-top: 12px; }
}
@media (max-width: 560px) {
  .hero h1 { font-size: 28px; }
  .pain-grid, .cap-grid, .adv-grid, .scene-grid { grid-template-columns: 1fr; }
  .stats-inner { grid-template-columns: 1fr 1fr; }
  .sec-title { font-size: 25px; }
  .nav-cta .btn-ghost { display: none; }
}