/* ==========================================================================
   广州赛谷信息科技有限公司 · 官网样式
   ========================================================================== */

:root {
  --brand: #0b5fff;
  --brand-2: #00c2ff;
  --brand-3: #7b5cff;
  --brand-deep: #062a6b;
  --ink: #0d1b2a;
  --ink-2: #3d4f63;
  --ink-3: #6b7c8f;
  --line: #e3e9f2;
  --line-2: #d3deec;
  --bg: #ffffff;
  --bg-soft: #f5f8fd;
  --bg-deep: #071b3d;
  --radius: 12px;
  --radius-lg: 18px;
  --shadow-sm: 0 1px 3px rgba(13, 27, 42, .05), 0 4px 12px rgba(13, 27, 42, .05);
  --shadow: 0 6px 24px rgba(13, 27, 42, .085);
  --shadow-lg: 0 18px 48px rgba(11, 95, 255, .18);
  --glow: 0 0 0 1px rgba(11, 95, 255, .12), 0 10px 30px rgba(11, 95, 255, .14);
  --grad-brand: linear-gradient(135deg, #0b5fff 0%, #2f7cff 45%, #00c2ff 100%);
  --grad-ico: linear-gradient(140deg, #e8f1ff 0%, #f3f9ff 55%, #eaf6ff 100%);
  --max: 1200px;
  --sp: 68px;
  --font: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Source Han Sans CN",
          -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-en: "Inter", "SF Pro Display", -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.68;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4 { margin: 0; line-height: 1.28; font-weight: 700; letter-spacing: -.2px; }
p { margin: 0 0 1em; }

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

::selection { background: rgba(11, 95, 255, .16); }

/* ---------- 统一矢量图标 ---------- */
.ico-svg {
  width: 1em; height: 1em; display: block;
  fill: none; stroke: currentColor; stroke-width: 1.9;
  stroke-linecap: round; stroke-linejoin: round;
  overflow: visible;
}

/* ---------- 顶部公告条 ---------- */
.topbar {
  background: linear-gradient(90deg, #04122b, #062a6b 60%, #0a3a92);
  color: #b9cfef;
  font-size: 12.5px;
  position: relative;
  z-index: 901;
}
.topbar .wrap { display: flex; justify-content: space-between; align-items: center; height: 34px; }
.topbar a:hover { color: #fff; }
.topbar .tb-right { display: flex; gap: 16px; }
.topbar .tb-right a { display: inline-flex; align-items: center; gap: 5px; }
.topbar .ico-svg { font-size: 13px; }
@media (max-width: 780px) { .topbar .tb-right { display: none; } }

/* ---------- 导航 ---------- */
.nav {
  position: sticky; top: 0; z-index: 900;
  background: rgba(255, 255, 255, .86);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s, box-shadow .25s, background .25s;
}
.nav.scrolled { border-bottom-color: var(--line); box-shadow: 0 4px 22px rgba(13, 27, 42, .07); }
.nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 84px; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 19px; font-weight: 800; letter-spacing: .1px; }
.logo .mark {
  width: 64px; height: 64px; border-radius: 14px; flex: 0 0 64px;
  background: #fff;
  display: grid; place-items: center; overflow: hidden;
  transition: transform .3s cubic-bezier(.2,.8,.3,1.2);
}
.logo .mark img { width: 100%; height: 100%; object-fit: contain; display: block; }
.logo:hover .mark { transform: scale(1.06); }
.logo .txt small { display: block; font-size: 10.5px; font-weight: 500; color: var(--ink-3); letter-spacing: 1.5px; }
.logo .txt span { display: block; font-size: 21px; line-height: 1.1; }

.menu { display: flex; align-items: center; gap: 2px; }
.menu > li { position: relative; }
.menu > li > a {
  display: block; padding: 9px 14px; border-radius: 8px;
  font-size: 14.5px; font-weight: 600; color: var(--ink-2);
  transition: color .18s, background .18s;
}
.menu > li > a:hover { color: var(--brand); background: #eef4ff; }
.menu > li.active > a { color: var(--brand); background: #eaf2ff; }
.menu > li > a .caret { display: inline-block; margin-left: 4px; font-size: 10px; opacity: .6; transition: transform .22s; }
.menu > li:hover > a .caret { transform: rotate(180deg); opacity: 1; }

.dropdown {
  position: absolute; top: calc(100% + 6px); left: 0; min-width: 224px;
  background: rgba(255, 255, 255, .98);
  backdrop-filter: blur(14px);
  border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 7px; opacity: 0; visibility: hidden;
  transform: translateY(-6px); transition: .2s;
}
.menu > li:hover .dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown a {
  display: block; padding: 8px 12px; border-radius: 8px;
  font-size: 13.6px; color: var(--ink-2); transition: .16s;
}
.dropdown a:hover { background: var(--bg-soft); color: var(--brand); padding-left: 16px; }

.nav-cta { display: flex; align-items: center; gap: 10px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  padding: 10px 20px; border-radius: 9px; font-size: 14px; font-weight: 600;
  border: 1px solid transparent; cursor: pointer; transition: .22s; white-space: nowrap;
}
.btn .ico-svg { font-size: 16px; }
.btn-primary { background: var(--grad-brand); color: #fff; box-shadow: 0 5px 16px rgba(11, 95, 255, .3); background-size: 160% 160%; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 26px rgba(11, 95, 255, .42); }
.btn-ghost { border-color: var(--line-2); color: var(--ink-2); background: #fff; }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand); box-shadow: 0 4px 14px rgba(11, 95, 255, .12); }
.btn-light { background: #fff; color: var(--brand-deep); }
.btn-light:hover { transform: translateY(-2px); box-shadow: 0 12px 26px rgba(0, 0, 0, .2); }
.btn-outline-light { border-color: rgba(255, 255, 255, .45); color: #fff; }
.btn-outline-light:hover { background: rgba(255, 255, 255, .14); border-color: #fff; }

.burger { display: none; width: 40px; height: 40px; border-radius: 10px; border: 1px solid var(--line); background: #fff; cursor: pointer; }
.burger span { display: block; width: 18px; height: 2px; background: var(--ink); margin: 4px auto; border-radius: 2px; transition: .2s; }

@media (max-width: 1080px) {
  .menu, .nav-cta .btn-ghost { display: none; }
  .burger { display: block; }
  .menu.open {
    display: block; position: absolute; top: 84px; left: 0; right: 0;
    background: #fff; padding: 12px 24px 20px; border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow); max-height: 78vh; overflow: auto;
  }
  .menu.open .dropdown { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: none; padding-left: 10px; }
}

/* ---------- 通用区块 ---------- */
section { padding: var(--sp) 0; }
.sec-soft { background: var(--bg-soft); position: relative; }

.sec-head { max-width: 760px; margin: 0 auto 40px; text-align: center; }
.sec-head.left { margin-left: 0; text-align: left; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: 11.5px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase;
  color: var(--brand); background: linear-gradient(120deg, #eaf2ff, #f0f8ff);
  border: 1px solid #dbe9ff;
  padding: 5px 13px; border-radius: 999px; margin-bottom: 13px;
}
.eyebrow::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: var(--brand); box-shadow: 0 0 0 3px rgba(11, 95, 255, .16); }
.sec-head h2 { font-size: clamp(23px, 3.1vw, 34px); letter-spacing: -.6px; }
.sec-head p { color: var(--ink-3); font-size: 15px; margin-top: 12px; }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden; color: #fff;
  background:
    radial-gradient(900px 460px at 82% 6%, rgba(0, 194, 255, .42), transparent 62%),
    radial-gradient(760px 480px at 6% 94%, rgba(123, 92, 255, .38), transparent 62%),
    radial-gradient(620px 380px at 48% 118%, rgba(11, 95, 255, .5), transparent 66%),
    linear-gradient(150deg, #031029 0%, #062050 42%, #0b3f96 100%);
  padding: 88px 0 92px;
}
.hero::after {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, .055) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255, 255, 255, .055) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(circle at 50% 40%, #000 20%, transparent 78%);
  pointer-events: none;
}
.hero::before {
  content: ""; position: absolute; width: 620px; height: 620px; right: -160px; top: -260px;
  background: radial-gradient(circle, rgba(0, 194, 255, .32), transparent 66%);
  filter: blur(20px); pointer-events: none;
}
.hero .wrap { position: relative; z-index: 2; }
.hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
.hero h1 { font-size: clamp(29px, 4.1vw, 48px); letter-spacing: -1.2px; }
.hero h1 em { font-style: normal; background: linear-gradient(100deg, #7cc4ff, #22e0ff 60%, #9d8bff); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero .lead { color: #bfd4f2; font-size: 15.5px; margin-top: 18px; max-width: 600px; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.hero-tags span {
  font-size: 12.5px; padding: 5px 13px; border-radius: 999px;
  background: rgba(255, 255, 255, .09); border: 1px solid rgba(255, 255, 255, .2); color: #dbe9ff;
  backdrop-filter: blur(6px); transition: .2s;
}
.hero-tags span:hover { background: rgba(255, 255, 255, .18); border-color: rgba(255, 255, 255, .4); }
.hero-actions { display: flex; gap: 12px; margin-top: 30px; flex-wrap: wrap; }

.hero-stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.hero-stat {
  background: rgba(255, 255, 255, .075); border: 1px solid rgba(255, 255, 255, .16);
  border-radius: var(--radius); padding: 20px 18px; backdrop-filter: blur(8px);
  transition: .28s; position: relative; overflow: hidden;
}
.hero-stat::after {
  content: ""; position: absolute; inset: 0; border-radius: inherit;
  background: linear-gradient(150deg, rgba(0, 194, 255, .18), transparent 60%);
  opacity: 0; transition: .28s;
}
.hero-stat:hover { transform: translateY(-3px); border-color: rgba(124, 196, 255, .5); box-shadow: 0 14px 34px rgba(0, 40, 120, .38); }
.hero-stat:hover::after { opacity: 1; }
.hero-stat b { display: block; font-size: 30px; font-weight: 800; letter-spacing: -.8px; color: #fff; font-family: var(--font-en); position: relative; z-index: 1; }
.hero-stat b i { font-style: normal; font-size: 16px; color: #7cc4ff; margin-left: 2px; }
.hero-stat span { font-size: 12.8px; color: #b7cdea; position: relative; z-index: 1; }

@media (max-width: 940px) {
  .hero-grid { grid-template-columns: 1fr; gap: 34px; }
  .hero { padding: 62px 0 68px; }
}

/* ---------- 卡片网格 ---------- */
.grid { display: grid; gap: 18px; }
.g2 { grid-template-columns: repeat(2, 1fr); }
.g3 { grid-template-columns: repeat(3, 1fr); }
.g4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 1024px) { .g4 { grid-template-columns: repeat(2, 1fr); } .g3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 700px) { .g2, .g3, .g4 { grid-template-columns: 1fr; } }

.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 24px 22px; transition: .28s cubic-bezier(.2,.7,.3,1); position: relative; overflow: hidden;
}
.card::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit;
  background: linear-gradient(150deg, rgba(11, 95, 255, .07), rgba(0, 194, 255, .05) 45%, transparent 70%);
  opacity: 0; transition: .3s; pointer-events: none;
}
.card::after {
  content: ""; position: absolute; left: 0; top: 0; height: 2.5px; width: 0;
  background: var(--grad-brand); transition: width .38s cubic-bezier(.2,.7,.3,1);
}
.card:hover { transform: translateY(-4px); box-shadow: 0 14px 36px rgba(11, 95, 255, .13); border-color: #c6dcff; }
.card:hover::before { opacity: 1; }
.card:hover::after { width: 100%; }
.card .ico {
  width: 46px; height: 46px; border-radius: 13px; display: grid; place-items: center;
  font-size: 22px; margin-bottom: 15px; position: relative;
  background: var(--grad-ico); border: 1px solid #dbe9ff; color: var(--brand);
  transition: .3s cubic-bezier(.2,.8,.3,1.1);
}
.card .ico .ico-svg { font-size: 23px; }
.card:hover .ico {
  background: var(--grad-brand); color: #fff; border-color: transparent;
  box-shadow: 0 8px 22px rgba(11, 95, 255, .34); transform: translateY(-2px) scale(1.05);
}
.card h3 { font-size: 17px; margin-bottom: 9px; position: relative; }
.card p { color: var(--ink-3); font-size: 14px; margin: 0; position: relative; }
.card ul { margin-top: 12px; position: relative; }
.card ul li { font-size: 13.5px; color: var(--ink-2); padding-left: 16px; position: relative; margin-bottom: 4px; }
.card ul li::before { content: ""; position: absolute; left: 0; top: 9px; width: 5px; height: 5px; border-radius: 50%; background: var(--brand); }
.card .more { display: inline-flex; align-items: center; gap: 6px; margin-top: 15px; font-size: 13.5px; font-weight: 600; color: var(--brand); }
.card .more::after { content: "\2192"; transition: .2s; }
.card:hover .more::after { transform: translateX(4px); }

/* ---------- 解决方案大卡 ---------- */
.sol-card {
  display: grid; grid-template-columns: 78px 1fr; gap: 20px; align-items: start;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 24px; transition: .28s cubic-bezier(.2,.7,.3,1); position: relative; overflow: hidden;
}
.sol-card::after {
  content: ""; position: absolute; right: -50px; bottom: -50px; width: 150px; height: 150px;
  border-radius: 50%; background: radial-gradient(circle, rgba(0, 194, 255, .18), transparent 68%);
  opacity: 0; transition: .35s;
}
.sol-card:hover { box-shadow: 0 16px 40px rgba(11, 95, 255, .14); transform: translateY(-4px); border-color: #c6dcff; }
.sol-card:hover::after { opacity: 1; }
.sol-card .ico {
  width: 78px; height: 78px; border-radius: 18px; display: grid; place-items: center;
  background: var(--grad-ico); border: 1px solid #dbe9ff; color: var(--brand);
  transition: .32s cubic-bezier(.2,.8,.3,1.1);
}
.sol-card .ico .ico-svg { font-size: 36px; }
.sol-card:hover .ico { background: var(--grad-brand); color: #fff; border-color: transparent; box-shadow: 0 10px 26px rgba(11, 95, 255, .32); }
.sol-card h3 { font-size: 18.5px; margin-bottom: 8px; }
.sol-card p { color: var(--ink-3); font-size: 14px; }
.sol-card .chips { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 13px; }
.sol-card .chips span { font-size: 12px; color: var(--brand); background: #eef4ff; padding: 3px 10px; border-radius: 999px; }
@media (max-width: 620px) { .sol-card { grid-template-columns: 1fr; } .sol-card .ico { width: 58px; height: 58px; border-radius: 15px; } .sol-card .ico .ico-svg { font-size: 28px; } }

/* ---------- 产品条目 ---------- */
.prod {
  border: 1px solid var(--line); border-radius: var(--radius); background: #fff;
  padding: 18px; transition: .24s;
}
.prod:hover { border-color: #c6dcff; box-shadow: 0 10px 26px rgba(11, 95, 255, .11); transform: translateY(-3px); }
.prod h4 { font-size: 15.2px; margin-bottom: 7px; }
.prod p { font-size: 13.4px; color: var(--ink-3); margin: 0; }
.prod .spec { margin-top: 10px; font-size: 12.5px; color: var(--ink-2); }
.prod .spec div { display: flex; gap: 8px; padding: 3px 0; border-top: 1px dashed var(--line); }
.prod .spec div b { flex: 0 0 72px; font-weight: 600; color: var(--ink-3); }

/* ---------- 数据条 ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
@media (max-width: 780px) { .stats { grid-template-columns: repeat(2, 1fr); } }
.stat {
  text-align: center; padding: 24px 14px; border-radius: var(--radius-lg);
  background: linear-gradient(160deg, #fff, #f8fbff); border: 1px solid var(--line);
  position: relative; overflow: hidden; transition: .28s;
}
.stat::before {
  content: ""; position: absolute; left: 50%; top: 0; width: 60%; height: 2.5px; transform: translateX(-50%);
  background: var(--grad-brand); border-radius: 0 0 4px 4px; opacity: .8;
}
.stat:hover { transform: translateY(-3px); box-shadow: 0 12px 30px rgba(11, 95, 255, .12); border-color: #c6dcff; }
.stat b { display: block; font-size: 32px; font-weight: 800; letter-spacing: -1.2px; font-family: var(--font-en);
  background: var(--grad-brand); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat b i { font-style: normal; font-size: 17px; }
.stat span { font-size: 13.2px; color: var(--ink-3); }

/* ---------- 时间轴 ---------- */
.timeline { position: relative; padding: 10px 0; }
.timeline::before { content: ""; position: absolute; left: 50%; top: 0; bottom: 0; width: 2px; background: linear-gradient(var(--brand), var(--brand-2), #d9e6ff); transform: translateX(-50%); }
.tl-item { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; margin-bottom: 24px; position: relative; }
.tl-item .dot { position: absolute; left: 50%; top: 12px; width: 14px; height: 14px; border-radius: 50%; background: #fff; border: 3px solid var(--brand); transform: translateX(-50%); z-index: 2; box-shadow: 0 0 0 4px rgba(11, 95, 255, .1); }
.tl-item .box { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 17px 19px; transition: .24s; }
.tl-item .box:hover { border-color: #c6dcff; box-shadow: 0 8px 22px rgba(11, 95, 255, .1); }
.tl-item .box b { display: block; color: var(--brand); font-size: 18px; margin-bottom: 5px; letter-spacing: -.3px; }
.tl-item .box p { margin: 0; font-size: 13.8px; color: var(--ink-2); }
.tl-item:nth-child(even) .box { grid-column: 2; }
.tl-item:nth-child(odd) .box { grid-column: 1; text-align: right; }
@media (max-width: 780px) {
  .timeline::before { left: 8px; }
  .tl-item { grid-template-columns: 1fr; gap: 0; padding-left: 32px; }
  .tl-item .dot { left: 8px; }
  .tl-item:nth-child(odd) .box { text-align: left; }
  .tl-item:nth-child(even) .box, .tl-item:nth-child(odd) .box { grid-column: 1; }
}

/* ---------- 案例卡 ---------- */
.case {
  border: 1px solid var(--line); border-radius: var(--radius-lg); background: #fff;
  padding: 23px; transition: .28s cubic-bezier(.2,.7,.3,1); display: flex; flex-direction: column;
  position: relative; overflow: hidden;
}
.case::after {
  content: ""; position: absolute; left: 0; top: 0; height: 2.5px; width: 0;
  background: var(--grad-brand); transition: width .38s cubic-bezier(.2,.7,.3,1);
}
.case:hover { box-shadow: 0 14px 36px rgba(11, 95, 255, .13); transform: translateY(-4px); border-color: #c6dcff; }
.case:hover::after { width: 100%; }
.case .tag { align-self: flex-start; font-size: 11.5px; font-weight: 700; color: var(--brand); background: #eef4ff; padding: 3px 11px; border-radius: 999px; margin-bottom: 12px; }
.case h3 { font-size: 16.5px; margin-bottom: 9px; }
.case p { font-size: 13.8px; color: var(--ink-3); margin: 0; flex: 1; }
.case .meta { margin-top: 14px; font-size: 12.5px; color: var(--ink-2); display: flex; flex-wrap: wrap; gap: 7px; }
.case .meta span { background: var(--bg-soft); padding: 3px 10px; border-radius: 7px; border: 1px solid #eaf0f9; }

/* ---------- 合作流程 ---------- */
.flow { display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; counter-reset: f; }
@media (max-width: 1024px) { .flow { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 620px) { .flow { grid-template-columns: repeat(2, 1fr); } }
.flow-item { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 16px; position: relative; transition: .26s; overflow: hidden; }
.flow-item::after {
  content: ""; position: absolute; inset: 0; border-radius: inherit;
  background: linear-gradient(160deg, rgba(11, 95, 255, .06), transparent 60%); opacity: 0; transition: .26s;
}
.flow-item:hover { transform: translateY(-3px); border-color: #c6dcff; box-shadow: 0 10px 26px rgba(11, 95, 255, .11); }
.flow-item:hover::after { opacity: 1; }
.flow-item::before {
  counter-increment: f; content: "0" counter(f);
  font-size: 24px; font-weight: 800; display: block; margin-bottom: 6px; letter-spacing: -1px;
  font-family: var(--font-en); position: relative;
  background: var(--grad-brand); -webkit-background-clip: text; background-clip: text; color: transparent; opacity: .9;
}
.flow-item h4 { font-size: 14.8px; margin-bottom: 6px; position: relative; }
.flow-item p { font-size: 13px; color: var(--ink-3); margin: 0; position: relative; }

/* ---------- 优势 ---------- */
.adv { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
@media (max-width: 700px) { .adv { grid-template-columns: 1fr; } }
.adv-item { display: flex; gap: 16px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 22px; transition: .26s; }
.adv-item:hover { transform: translateY(-3px); border-color: #c6dcff; box-shadow: 0 12px 30px rgba(11, 95, 255, .11); }
.adv-item .k { flex: 0 0 44px; height: 44px; border-radius: 12px; background: var(--grad-brand); color: #fff; display: grid; place-items: center; font-weight: 800; font-size: 17px; box-shadow: 0 6px 16px rgba(11, 95, 255, .26); }
.adv-item .k .ico-svg { font-size: 22px; }
.adv-item h4 { font-size: 16px; margin-bottom: 6px; }
.adv-item p { font-size: 13.6px; color: var(--ink-3); margin: 0; }

/* ---------- 页头 banner ---------- */
.pagehead {
  background:
    radial-gradient(760px 400px at 86% 0%, rgba(0, 194, 255, .34), transparent 62%),
    radial-gradient(560px 380px at 4% 106%, rgba(123, 92, 255, .32), transparent 62%),
    linear-gradient(140deg, #031029, #062050 52%, #0b3f96);
  color: #fff; padding: 58px 0 52px; position: relative; overflow: hidden;
}
.pagehead::after {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, .05) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255, 255, 255, .05) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: radial-gradient(circle at 74% 30%, #000 12%, transparent 72%);
}
.pagehead .wrap { position: relative; z-index: 2; }
.pagehead h1 { font-size: clamp(24px, 3.3vw, 36px); letter-spacing: -.7px; }
.pagehead p { color: #b9d0ef; max-width: 700px; margin-top: 12px; font-size: 14.8px; }
.crumb { font-size: 12.5px; color: #8fb0d8; margin-bottom: 12px; display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.crumb a:hover { color: #fff; }

/* ---------- 侧栏文档列表 ---------- */
.doclist { border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; background: #fff; }
.doclist .dl-head { padding: 15px 20px; background: var(--bg-soft); border-bottom: 1px solid var(--line); font-weight: 700; font-size: 14.5px; }
.doclist a { display: flex; justify-content: space-between; gap: 12px; padding: 11px 20px; font-size: 13.6px; color: var(--ink-2); border-bottom: 1px solid var(--line); transition: .18s; }
.doclist a:last-child { border-bottom: none; }
.doclist a:hover { background: #eef4ff; color: var(--brand); padding-left: 24px; }
.doclist a span { color: var(--ink-3); font-size: 12px; flex: 0 0 auto; }

/* ---------- 富文本 ---------- */
.rich p { color: var(--ink-2); font-size: 14.6px; }
.rich h3 { font-size: 18.5px; margin: 26px 0 10px; }
.rich h4 { font-size: 15.8px; margin: 20px 0 9px; }
.rich ul.bul { margin: 10px 0; }
.rich ul.bul li { position: relative; padding-left: 19px; margin-bottom: 6px; color: var(--ink-2); font-size: 14.2px; }
.rich ul.bul li::before { content: ""; position: absolute; left: 2px; top: 10px; width: 5px; height: 5px; border-radius: 50%; background: var(--brand); }
.rich ul { margin: 10px 0; }
.rich ul li { position: relative; padding-left: 17px; margin-bottom: 5px; color: var(--ink-2); font-size: 14.2px; }
.rich ul li::before { content: ""; position: absolute; left: 1px; top: 10px; width: 5px; height: 5px; border-radius: 50%; background: var(--brand); }

.two-col { display: grid; grid-template-columns: 1.62fr 1fr; gap: 44px; align-items: start; }
@media (max-width: 960px) { .two-col { grid-template-columns: 1fr; gap: 30px; } }

/* ---------- 表格 ---------- */
.tbl { width: 100%; border-collapse: separate; border-spacing: 0; font-size: 13.8px; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.tbl th, .tbl td { padding: 10px 14px; border-bottom: 1px solid var(--line); text-align: left; }
.tbl th { background: linear-gradient(180deg, #f7faff, #eef4ff); font-weight: 700; color: var(--ink-2); font-size: 13.2px; }
.tbl td { color: var(--ink-2); }
.tbl tbody tr { transition: background .18s; }
.tbl tbody tr:hover { background: #f8fbff; }
.tbl tr:last-child td { border-bottom: none; }

/* ---------- CTA ---------- */
.cta {
  background: linear-gradient(125deg, #062050, #0b5fff 55%, #00c2ff 105%);
  color: #fff; border-radius: var(--radius-lg); padding: 42px 40px;
  display: flex; justify-content: space-between; align-items: center; gap: 28px; flex-wrap: wrap;
  position: relative; overflow: hidden;
}
.cta::after {
  content: ""; position: absolute; width: 460px; height: 460px; right: -140px; top: -200px;
  background: radial-gradient(circle, rgba(255, 255, 255, .16), transparent 66%); pointer-events: none;
}
.cta h2 { font-size: clamp(21px, 2.6vw, 28px); position: relative; }
.cta p { color: #d3e4ff; margin: 9px 0 0; font-size: 14.6px; position: relative; }
.cta .acts { display: flex; gap: 12px; flex-wrap: wrap; position: relative; }

/* ---------- 页脚 ---------- */
footer { background: linear-gradient(180deg, #04122b, #030d1f); color: #90a8c6; padding: 52px 0 0; font-size: 13.6px; }
.ft-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.3fr; gap: 34px; padding-bottom: 38px; }
@media (max-width: 940px) { .ft-grid { grid-template-columns: repeat(2, 1fr); gap: 28px; } }
@media (max-width: 560px) { .ft-grid { grid-template-columns: 1fr; } }
footer h4 { color: #fff; font-size: 14.5px; margin-bottom: 15px; }
footer li { margin-bottom: 8px; }
footer a:hover { color: #fff; }
footer .ft-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
footer .ft-logo .mark { width: 56px; height: 56px; border-radius: 12px; background: #fff; display: grid; place-items: center; overflow: hidden; padding: 2px; }
footer .ft-logo .mark img { width: 100%; height: 100%; object-fit: contain; display: block; }
footer .ft-logo b { color: #fff; font-size: 16px; }
.ft-bottom { border-top: 1px solid rgba(255, 255, 255, .09); padding: 18px 0; font-size: 12.5px; color: #6c86a8; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.ft-bottom a { color: #8fa9c8; border-bottom: 1px solid transparent; transition: .2s; }
.ft-bottom a:hover { color: #fff; border-bottom-color: rgba(255, 255, 255, .5); }

/* ---------- 图片位 ---------- */
.ph {
  border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--line);
  background: linear-gradient(135deg, #eef4ff, #f7fbff);
}
.ph img { width: 100%; height: 100%; object-fit: cover; }

/* ---------- 动画 ---------- */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity .68s cubic-bezier(.2,.7,.3,1), transform .68s cubic-bezier(.2,.7,.3,1); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- 返回顶部 ---------- */
.totop {
  position: fixed; right: 20px; bottom: 24px; width: 42px; height: 42px; border-radius: 12px;
  background: var(--grad-brand); color: #fff; display: grid; place-items: center; cursor: pointer;
  box-shadow: var(--shadow-lg); opacity: 0; visibility: hidden; transition: .26s; z-index: 800; border: none; font-size: 17px;
}
.totop.on { opacity: 1; visibility: visible; }
.totop:hover { transform: translateY(-3px); box-shadow: 0 14px 34px rgba(11, 95, 255, .42); }
.totop .ico-svg { font-size: 18px; }

/* ---------- 内页布局 ---------- */
.split { display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; align-items: center; }
@media (max-width: 900px) { .split { grid-template-columns: 1fr; gap: 28px; } }

.kv { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
@media (max-width: 560px) { .kv { grid-template-columns: 1fr; } }
@media (max-width: 620px) {
  .logo .mark { width: 50px; height: 50px; flex: 0 0 50px; border-radius: 11px; }
  .logo .txt span { font-size: 18.5px; }
  .logo .txt small { font-size: 9.5px; letter-spacing: 1.2px; }
  .nav .wrap { height: 72px; }
  .menu.open { top: 72px; }
}
.kv-item { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; transition: .22s; }
.kv-item:hover { border-color: #c6dcff; box-shadow: 0 8px 20px rgba(11, 95, 255, .09); }
.kv-item b { display: block; font-size: 12.5px; color: var(--ink-3); font-weight: 600; margin-bottom: 3px; }
.kv-item span { font-size: 14.6px; font-weight: 600; color: var(--ink); word-break: break-all; }

.note {
  background: linear-gradient(100deg, #f5f9ff, #f9fcff);
  border: 1px solid #e2ecfb; border-left: 3px solid var(--brand);
  border-radius: 0 12px 12px 0; padding: 15px 19px; font-size: 13.8px; color: var(--ink-2);
}
.note strong { color: var(--ink); }