/* ============================================================
   ZENNOVA 臻诺 — 站点样式表
   设计系统：Ink & Signal
   - 底色体系：墨蓝(ink) / 纸白(paper) / 雾灰(mist)
   - 单一强调色：信号青(teal)
   - 签名元素：部署拓扑图 + 等宽微标签 + 1px 技术网格
   ============================================================ */

/* ---------- 1. 设计变量 ---------- */
:root {
  --ink: #0a1526;
  --ink-2: #0e1f38;
  --ink-soft: #132a49;

  --paper: #ffffff;
  --mist: #f4f7fa;
  --mist-2: #eef3f8;

  --line: #e3e9f0;
  --line-strong: #cfd9e4;

  --tx: #0d1a2b;
  --tx-2: #4e6076;
  --tx-3: #64748b;

  --accent: #12b5a5;
  --accent-ink: #0a6e63;
  --accent-soft: #e6f6f4;
  --accent-line: #b7e5df;

  --on-ink: #eaeff6;
  --on-ink-2: #93a6bc;
  --on-ink-3: #7c90a8;

  --radius-sm: 10px;
  --radius: 14px;
  --radius-lg: 20px;

  --shadow-sm: 0 1px 2px rgba(13, 26, 43, 0.05);
  --shadow: 0 1px 2px rgba(13, 26, 43, 0.04), 0 10px 28px -14px rgba(13, 26, 43, 0.22);
  --shadow-lg: 0 2px 4px rgba(13, 26, 43, 0.04), 0 24px 48px -24px rgba(13, 26, 43, 0.28);

  --maxw: 1200px;
  --head-h: 66px;

  --font: "Noto Sans SC", "Microsoft YaHei UI", "Microsoft YaHei", "PingFang SC",
    "Hiragino Sans GB", "Source Han Sans SC", system-ui, -apple-system, "Segoe UI", Arial, sans-serif;
  --font-mono: "Consolas", "SFMono-Regular", "JetBrains Mono", "Cascadia Mono", ui-monospace, monospace;
}

/* ---------- 2. 基础重置 ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font);
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--tx);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, p, ul, ol, figure, blockquote { margin: 0; padding: 0; }
ul, ol { list-style: none; }
img, svg, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: 0; }
strong, b { font-weight: 700; }
em { font-style: normal; }

::selection { background: var(--accent); color: #fff; }

:focus-visible {
  outline: 2px solid var(--accent-ink);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- 3. 布局工具 ---------- */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 28px;
}

.section { padding: 92px 0; }
.section--tight { padding: 68px 0; }
.section--mist { background: var(--mist); }
.section--ink { background: var(--ink); color: var(--on-ink); }

.section--ink .sec-lead,
.section--ink .prose p { color: var(--on-ink-2); }
.section--ink h2, .section--ink h3 { color: #fff; }

.skip-link {
  position: absolute;
  inset-inline-start: -9999px;
  top: 0;
  background: var(--ink);
  color: #fff;
  padding: 10px 18px;
  z-index: 100;
}
.skip-link:focus { inset-inline-start: 12px; top: 12px; }

/* ---------- 4. 微标签 / 标题 ---------- */
.kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-ink);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
}
.kicker::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--accent);
  display: block;
}
.section--ink .kicker,
.hero .kicker,
.pagehead .kicker,
.cta-band .kicker { color: var(--accent); }

.sec-head { max-width: 780px; margin-bottom: 52px; }
.sec-head--center { margin-inline-start: auto; margin-inline-end: auto; text-align: center; }
.sec-head--center .kicker::before { display: none; }

h2.sec-title {
  font-size: clamp(26px, 3.1vw, 38px);
  line-height: 1.28;
  letter-spacing: -0.018em;
  font-weight: 700;
  margin: 18px 0 0;
}

.sec-lead {
  margin-top: 18px;
  color: var(--tx-2);
  font-size: 16px;
  line-height: 1.9;
  max-width: 720px;
}
.sec-head--center .sec-lead { margin-inline-start: auto; margin-inline-end: auto; }

.mono {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--tx-2);
}

/* ---------- 5. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  height: 48px;
  padding: 0 26px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.01em;
  border: 1px solid transparent;
  transition: background-color 0.22s, color 0.22s, border-color 0.22s, transform 0.22s, box-shadow 0.22s;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--primary { background: var(--accent); color: #04241f; }
.btn--primary:hover { background: #17c9b7; box-shadow: 0 10px 24px -12px rgba(18, 181, 165, 0.9); }

.btn--ghost { border-color: rgba(255, 255, 255, 0.28); color: #fff; }
.btn--ghost:hover { border-color: var(--accent); color: var(--accent); }

.btn--ink { background: var(--ink); color: #fff; }
.btn--ink:hover { background: var(--ink-soft); }

.btn--outline { border-color: var(--line-strong); color: var(--tx); }
.btn--outline:hover { border-color: var(--accent-ink); color: var(--accent-ink); }

.btn--sm { height: 40px; padding: 0 20px; font-size: 14px; }

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-weight: 600;
  font-size: 14.5px;
  color: var(--accent-ink);
}
.link-arrow svg { transition: transform 0.22s; }
.link-arrow:hover svg { transform: translateX(3px); }
.section--ink .link-arrow { color: var(--accent); }

/* ---------- 6. 站点头部 ---------- */
.site-header {
  position: fixed;
  top: 0;
  inset-inline-start: 0;
  inset-inline-end: 0;
  z-index: 60;
  height: var(--head-h);
  display: flex;
  align-items: center;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background-color 0.32s, border-color 0.32s, backdrop-filter 0.32s;
}
/* 页首：浮在深色首屏之上，正文反白 */
.site-header .brand__mark { border-radius: 9px; box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.14); }
.site-header .brand__mark rect { fill: #ffffff; transition: fill 0.3s; }
.site-header .brand__mark circle[fill="#ffffff"] { fill: #0a1526; transition: fill 0.3s; }
.site-header .brand__en { color: #ffffff; }
.site-header .brand__cn { color: rgba(255, 255, 255, 0.66); }
.site-header .nav a { color: rgba(255, 255, 255, 0.76); }
.site-header .nav a:hover { color: #ffffff; background: rgba(255, 255, 255, 0.1); }
.site-header .nav a.is-active { color: #ffffff; }
.site-header .nav-toggle { border-color: rgba(255, 255, 255, 0.3); }
.site-header .nav-toggle span,
.site-header .nav-toggle span::before,
.site-header .nav-toggle span::after { background: #ffffff; }

/* 滚动后：实底白底，正文转深色 */
.site-header.is-solid {
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  border-bottom-color: var(--line);
}
.site-header.is-solid .brand__mark { box-shadow: none; }
.site-header.is-solid .brand__mark rect { fill: #0a1526; }
.site-header.is-solid .brand__mark circle[fill="#0a1526"] { fill: #ffffff; }
.site-header.is-solid .brand__en { color: var(--ink); }
.site-header.is-solid .brand__cn { color: var(--tx-3); }
.site-header.is-solid .nav a { color: var(--tx-2); }
.site-header.is-solid .nav a:hover { color: var(--tx); background: rgba(13, 26, 43, 0.045); }
.site-header.is-solid .nav a.is-active { color: var(--ink); }
.site-header.is-solid .nav-toggle { border-color: var(--line); }
.site-header.is-solid .nav-toggle span,
.site-header.is-solid .nav-toggle span::before,
.site-header.is-solid .nav-toggle span::after { background: var(--ink); }

.site-header .wrap {
  display: flex;
  align-items: center;
  gap: 34px;
}

/* 品牌锁定 */
.brand { display: flex; align-items: center; gap: 11px; flex-shrink: 0; }
.brand__mark { width: 32px; height: 32px; flex-shrink: 0; }
.brand__text { display: flex; flex-direction: column; line-height: 1.15; }
.brand__en {
  font-size: 14.5px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--ink);
}
.brand__cn {
  font-size: 10.5px;
  letter-spacing: 0.28em;
  color: var(--tx-3);
  margin-top: 2px;
}

.nav { margin-inline-start: auto; display: flex; align-items: center; gap: 4px; }
.nav a {
  position: relative;
  padding: 8px 14px;
  font-size: 14.5px;
  color: var(--tx-2);
  border-radius: 8px;
  transition: color 0.2s, background-color 0.2s;
}
.nav a:hover { color: var(--tx); background: rgba(13, 26, 43, 0.045); }
.nav a.is-active { color: var(--ink); font-weight: 600; }
.nav a.is-active::after {
  content: "";
  position: absolute;
  inset-inline-start: 14px;
  inset-inline-end: 14px;
  bottom: 1px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.nav__cta { margin-inline-start: 14px; }
/* 需要足够高的优先级，否则会被 .nav a / .site-header.is-solid .nav a 的文字颜色覆盖 */
.site-header .nav a.nav__cta,
.site-header .nav a.nav__cta:hover,
.site-header.is-solid .nav a.nav__cta,
.site-header.is-solid .nav a.nav__cta:hover { color: #04241f; }

.nav-toggle {
  display: none;
  margin-inline-start: auto;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  border: 1px solid var(--line);
  align-items: center;
  justify-content: center;
}
.nav-toggle span {
  display: block;
  width: 17px;
  height: 1.6px;
  background: var(--ink);
  position: relative;
}
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  width: 17px;
  height: 1.6px;
  background: var(--ink);
}
.nav-toggle span::before { top: -5.5px; }
.nav-toggle span::after { top: 5.5px; }

/* ---------- 7. Hero ---------- */
.hero {
  position: relative;
  background: var(--ink);
  color: var(--on-ink);
  padding: calc(var(--head-h) + 96px) 0 100px;
  overflow: hidden;
  isolation: isolate;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(760px 420px at 78% 8%, rgba(18, 181, 165, 0.20), transparent 62%),
    radial-gradient(620px 520px at 6% 92%, rgba(41, 98, 255, 0.14), transparent 60%);
  z-index: -2;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.055) 1px, transparent 1px);
  background-size: 68px 68px;
  -webkit-mask-image: radial-gradient(120% 90% at 50% 10%, #000 25%, transparent 82%);
  mask-image: radial-gradient(120% 90% at 50% 10%, #000 25%, transparent 82%);
  z-index: -1;
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 1fr);
  gap: 64px;
  align-items: center;
}

.hero h1 {
  font-size: clamp(36px, 4.9vw, 60px);
  line-height: 1.12;
  letter-spacing: -0.028em;
  font-weight: 700;
  color: #fff;
  margin: 22px 0 0;
}
.hero h1 .hl { color: var(--accent); }

.hero__lead {
  margin-top: 26px;
  font-size: 17px;
  line-height: 1.92;
  color: var(--on-ink-2);
  max-width: 560px;
}

.hero__cta { margin-top: 38px; display: flex; flex-wrap: wrap; gap: 14px; }

.trust {
  margin-top: 46px;
  padding-top: 26px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
}
.trust li {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 13.5px;
  color: var(--on-ink-2);
}
.trust svg { flex-shrink: 0; color: var(--accent); }

/* 部署拓扑图（签名元素） */
.topology {
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  background: linear-gradient(170deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.015));
  padding: 26px 24px 22px;
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(4px);
}
.topology__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.14);
}
.topology__title {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--on-ink-2);
}
.topology__dot {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
}
.topology__dot i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 rgba(18, 181, 165, 0.7);
  animation: pulse 2.6s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(18, 181, 165, 0.6); }
  70% { box-shadow: 0 0 0 9px rgba(18, 181, 165, 0); }
  100% { box-shadow: 0 0 0 0 rgba(18, 181, 165, 0); }
}

.layer {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 14px;
  align-items: center;
  padding: 13px 0;
  position: relative;
}
.layer + .layer { border-top: 1px solid rgba(255, 255, 255, 0.075); }
.layer__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--on-ink-3);
  padding-inline-start: 14px;
  position: relative;
}
.layer__key::before {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  border: 1.5px solid var(--accent);
  border-radius: 2px;
}
.layer__chips { display: flex; flex-wrap: wrap; gap: 7px; }
.chip {
  font-size: 12.5px;
  padding: 5px 11px;
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--on-ink);
  line-height: 1.5;
}
.chip--accent {
  background: rgba(18, 181, 165, 0.14);
  border-color: rgba(18, 181, 165, 0.38);
  color: #9ff0e5;
}

/* ---------- 8. 页面头（内页） ---------- */
.pagehead {
  background: var(--ink);
  color: var(--on-ink);
  padding: calc(var(--head-h) + 84px) 0 76px;
  position: relative;
  overflow: hidden;
  isolation: isolate;
}
.pagehead::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(680px 380px at 84% 0%, rgba(18, 181, 165, 0.18), transparent 62%);
  z-index: -2;
}
.pagehead::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 68px 68px;
  -webkit-mask-image: radial-gradient(110% 100% at 40% 0%, #000 20%, transparent 78%);
  mask-image: radial-gradient(110% 100% at 40% 0%, #000 20%, transparent 78%);
  z-index: -1;
}
.pagehead h1 {
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.18;
  letter-spacing: -0.024em;
  font-weight: 700;
  color: #fff;
  margin: 20px 0 0;
}
.pagehead__lead {
  margin-top: 20px;
  color: var(--on-ink-2);
  font-size: 16.5px;
  max-width: 680px;
  line-height: 1.9;
}

/* ---------- 9. 数字条 ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--paper);
}
.stat {
  padding: 30px 26px;
  border-inline-end: 1px solid var(--line);
}
.stat:last-child { border-inline-end: 0; }
.stat__num {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}
.stat__num small { font-size: 16px; font-weight: 600; color: var(--accent-ink); margin-inline-start: 3px; }
.stat__label { margin-top: 8px; font-size: 13.5px; color: var(--tx-2); line-height: 1.6; }

/* ---------- 10. 卡片网格 ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}
.cards--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.cards--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 26px 28px;
  position: relative;
  transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}
.card:hover {
  border-color: var(--accent-line);
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}
.card__ico {
  width: 38px;
  height: 38px;
  color: var(--accent-ink);
  margin-bottom: 18px;
}
.card h3 {
  font-size: 18.5px;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.4;
}
.card p {
  margin-top: 12px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--tx-2);
}
.card__idx {
  position: absolute;
  top: 22px;
  inset-inline-end: 24px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--tx-3);
  letter-spacing: 0.08em;
}
.card ul { margin-top: 14px; }
.card ul li {
  position: relative;
  padding-inline-start: 16px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--tx-2);
}
.card ul li + li { margin-top: 5px; }
.card ul li::before {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  top: 12px;
  width: 5px;
  height: 5px;
  border-radius: 1px;
  background: var(--accent);
}

.section--ink .card {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.1);
}
.section--ink .card:hover { border-color: rgba(18, 181, 165, 0.5); }
.section--ink .card h3 { color: #fff; }
.section--ink .card p,
.section--ink .card ul li { color: var(--on-ink-2); }
.section--ink .card__ico { color: var(--accent); }
.section--ink .card__idx { color: var(--on-ink-3); }

/* ---------- 11. 步骤 ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0;
  border-top: 1px solid var(--line);
}
.step {
  padding: 32px 22px 0 0;
  position: relative;
}
.step::before {
  content: "";
  position: absolute;
  top: -1px;
  inset-inline-start: 0;
  width: 100%;
  height: 2px;
  background: transparent;
  transition: background-color 0.3s;
}
.step:hover::before { background: var(--accent); }
.step__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--accent-ink);
}
.step h3 {
  margin-top: 14px;
  font-size: 16.5px;
  font-weight: 700;
}
.step p {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--tx-2);
  padding-inline-end: 12px;
}

/* ---------- 12. 部署形态 ---------- */
.deploy {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}
.deploy__col {
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  padding: 28px 26px;
  background: linear-gradient(175deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.012));
}
.deploy__col--feature {
  border-color: rgba(18, 181, 165, 0.45);
  background: linear-gradient(175deg, rgba(18, 181, 165, 0.13), rgba(18, 181, 165, 0.02));
}
.deploy__tag {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}
.deploy__col h3 {
  margin-top: 12px;
  font-size: 19px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.01em;
}
.deploy__col > p {
  margin-top: 12px;
  font-size: 14.5px;
  color: var(--on-ink-2);
  line-height: 1.8;
}
.spec { margin-top: 22px; border-top: 1px solid rgba(255, 255, 255, 0.1); }
.spec div {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  font-size: 13.5px;
}
.spec dt, .spec span:first-child { color: var(--on-ink-3); }
.spec dd, .spec span:last-child { color: var(--on-ink); text-align: end; }

/* ---------- 12b. 出海合规平台 ---------- */
.platform {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}
.platform__card {
  position: relative;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: var(--radius-lg);
  padding: 32px 30px 28px;
  background: linear-gradient(172deg, rgba(255, 255, 255, 0.075), rgba(255, 255, 255, 0.015));
  overflow: hidden;
  transition: border-color 0.25s, transform 0.25s;
}
.platform__card::before {
  content: "";
  position: absolute;
  top: 0;
  inset-inline-start: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), rgba(18, 181, 165, 0) 74%);
}
.platform__card:hover { border-color: rgba(18, 181, 165, 0.45); transform: translateY(-3px); }
.platform__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.platform__tag {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--on-ink-2);
}
.platform__tech {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: #9ff0e5;
  border: 1px solid rgba(18, 181, 165, 0.4);
  background: rgba(18, 181, 165, 0.13);
  border-radius: 999px;
  padding: 3px 11px;
  white-space: nowrap;
}
.platform__name {
  margin-top: 20px;
  font-size: 25px;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.25;
  color: #ffffff;
}
.platform__en {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
}
.platform__desc {
  margin-top: 16px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--on-ink-2);
}
.platform__list {
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: grid;
  gap: 9px;
}
.platform__list li {
  position: relative;
  padding-inline-start: 17px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--on-ink-2);
}
.platform__list li::before {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  top: 11px;
  width: 5px;
  height: 5px;
  border-radius: 1px;
  background: var(--accent);
}
.platform__note {
  margin-top: 22px;
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--on-ink-2);
}

/* 主打方向徽标 */
.card__badge {
  position: absolute;
  top: 24px;
  inset-inline-end: 24px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--accent-ink);
  background: var(--accent-soft);
  border: 1px solid var(--accent-line);
  border-radius: 6px;
  padding: 3px 9px;
}

/* ---------- 13. 客户矩阵 ---------- */
.clients {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--paper);
}
.client {
  min-height: 86px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 12px 10px;
  border-inline-end: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  color: var(--tx-2);
  line-height: 1.5;
  transition: background-color 0.22s, color 0.22s;
}
.client:nth-child(6n) { border-inline-end: 0; }
/* 末行占位格：白底省略号，示意“还有很多客户”，同时补满表格 */
.client--blank { background: var(--paper); color: var(--tx-2); cursor: default; }
.client:not(.client--blank):hover { background: var(--mist); color: var(--ink); font-weight: 600; }
.client--en { font-size: 13px; letter-spacing: 0.02em; }

/* ---------- 14. 案例 ---------- */
.case {
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr) 300px;
  gap: 32px;
  padding: 40px 0;
  border-top: 1px solid var(--line);
  align-items: start;
}
.case:last-of-type { border-bottom: 1px solid var(--line); }
.case__num {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 600;
  color: #4f9e93;
  line-height: 1;
  padding-top: 6px;
}
.case__body h3 {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.012em;
}
.case__meta {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--tx-3);
}
.case__body dl { margin-top: 20px; }
.case__body dt {
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--accent-ink);
  text-transform: uppercase;
  margin-top: 18px;
}
.case__body dd {
  margin: 6px 0 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--tx-2);
}
.case__result {
  background: var(--mist);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 22px 18px;
}
.case__result h4 {
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-family: var(--font-mono);
  color: var(--tx-2);
  font-weight: 600;
}
.case__result ul { margin-top: 14px; }
.case__result li {
  font-size: 14px;
  line-height: 1.75;
  color: var(--tx-2);
  padding-inline-start: 15px;
  position: relative;
}
.case__result li + li { margin-top: 9px; }
.case__result li::before {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  top: 11px;
  width: 5px;
  height: 5px;
  border-radius: 1px;
  background: var(--accent);
}

/* ---------- 15. 表格 ---------- */
.table-scroll { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); }
table.matrix {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
  font-size: 14.5px;
}
table.matrix th,
table.matrix td {
  padding: 15px 20px;
  text-align: start;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
table.matrix thead th {
  background: var(--mist);
  font-size: 13px;
  font-weight: 700;
  color: var(--tx-2);
  letter-spacing: 0.04em;
  white-space: nowrap;
}
table.matrix tbody tr:last-child td { border-bottom: 0; }
table.matrix td:first-child { font-weight: 600; color: var(--ink); white-space: nowrap; }
table.matrix td { color: var(--tx-2); }
.yes {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--accent-ink);
  background: var(--accent-soft);
  border: 1px solid var(--accent-line);
  border-radius: 6px;
  padding: 2px 9px;
  white-space: nowrap;
}
.opt {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--tx-3);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 2px 9px;
  white-space: nowrap;
}

/* ---------- 16. 标签 ---------- */
.tags { display: flex; flex-wrap: wrap; gap: 10px; }
.tag {
  font-size: 13.5px;
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  color: var(--tx-2);
  background: var(--paper);
  transition: border-color 0.2s, color 0.2s;
}
.tag:hover { border-color: var(--accent-line); color: var(--accent-ink); }
.section--ink .tag {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.14);
  color: var(--on-ink-2);
}

/* ---------- 17. 正文段落 ---------- */
.prose p {
  font-size: 16px;
  line-height: 1.95;
  color: var(--tx-2);
  max-width: 760px;
}
.prose p + p { margin-top: 18px; }
.prose strong { color: var(--tx); }

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 64px;
  align-items: center;
}

/* 四条尺子 */
.rulers { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.ruler {
  border-inline-start: 2px solid var(--accent);
  padding: 4px 0 4px 20px;
}
.ruler h3 { font-size: 16.5px; font-weight: 700; }
.ruler p { margin-top: 8px; font-size: 14px; color: var(--tx-2); line-height: 1.8; }

/* 提示条 */
.notice {
  display: flex;
  gap: 14px;
  padding: 18px 22px;
  border: 1px solid var(--line);
  border-inline-start: 3px solid var(--accent);
  border-radius: var(--radius-sm);
  background: var(--mist);
  font-size: 13.5px;
  color: var(--tx-2);
  line-height: 1.8;
}
.notice svg { flex-shrink: 0; margin-top: 3px; color: var(--accent-ink); }

/* ---------- 18. 表单 ---------- */
.form { display: grid; gap: 22px; }
.field { display: grid; gap: 9px; }
.field label { font-size: 13.5px; font-weight: 600; color: var(--tx); }
.field label .req { color: var(--accent-ink); margin-inline-start: 3px; }
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 13px 15px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: var(--paper);
  font-size: 15px;
  line-height: 1.6;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.field textarea { min-height: 128px; resize: vertical; }
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(18, 181, 165, 0.14);
}
.field .hint { font-size: 12.5px; color: var(--tx-3); }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }

.checks { display: flex; flex-wrap: wrap; gap: 10px; }
.check {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 15px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-size: 14px;
  color: var(--tx-2);
  cursor: pointer;
  transition: border-color 0.2s, background-color 0.2s, color 0.2s;
  user-select: none;
}
.check input { width: auto; margin: 0; accent-color: var(--accent); }
.check:has(input:checked) {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent-ink);
  font-weight: 600;
}

.mailcard {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 30px 28px;
  background: var(--mist);
}
.mailcard__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--tx-2);
}
.mailcard__addr {
  display: inline-block;
  margin-top: 12px;
  font-size: clamp(20px, 2.6vw, 28px);
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--ink);
  word-break: break-all;
  border-bottom: 2px solid var(--accent);
  padding-bottom: 3px;
}
.mailcard__addr:hover { color: var(--accent-ink); }
.mailcard__meta { margin-top: 20px; font-size: 14px; color: var(--tx-2); }

/* ---------- 19. CTA 带 ---------- */
.cta-band {
  background: var(--ink);
  color: var(--on-ink);
  position: relative;
  overflow: hidden;
  isolation: isolate;
  padding: 84px 0;
}
.cta-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(640px 340px at 82% 100%, rgba(18, 181, 165, 0.22), transparent 62%);
  z-index: -1;
}
.cta-band h2 {
  font-size: clamp(26px, 3.2vw, 38px);
  line-height: 1.28;
  letter-spacing: -0.02em;
  color: #fff;
  font-weight: 700;
  max-width: 720px;
  margin-top: 18px;
}
.cta-band p {
  margin-top: 18px;
  color: var(--on-ink-2);
  font-size: 16px;
  max-width: 620px;
  line-height: 1.9;
}
.cta-band .cta-row { margin-top: 32px; }

/* ---------- 20. 页脚 ---------- */
.site-footer {
  background: #071120;
  color: var(--on-ink-2);
  padding: 68px 0 30px;
  font-size: 14px;
}
.site-footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 44px;
  padding-bottom: 44px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.09);
}
.site-footer h4 {
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-family: var(--font-mono);
  color: var(--on-ink-3);
  margin-bottom: 18px;
  font-weight: 600;
}
.site-footer .brand__en { color: #fff; }
.site-footer .brand__cn { color: var(--on-ink-3); }
.site-footer__desc {
  margin-top: 20px;
  font-size: 13.5px;
  line-height: 1.9;
  color: var(--on-ink-2);
  max-width: 320px;
}
.site-footer__links li + li { margin-top: 11px; }
.site-footer__links a { font-size: 14px; color: var(--on-ink-2); transition: color 0.2s; }
.site-footer__links a:hover { color: var(--accent); }
.site-footer__mail {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  border-bottom: 1px solid rgba(18, 181, 165, 0.6);
  padding-bottom: 2px;
}
.site-footer__mail:hover { color: var(--accent); }
.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  justify-content: space-between;
  padding-top: 26px;
  font-size: 12.5px;
  color: var(--on-ink-3);
}
.site-footer__bottom p { max-width: 720px; line-height: 1.75; }

/* ---------- 21. 回到顶部 ---------- */
.totop {
  position: fixed;
  inset-inline-end: 26px;
  bottom: 26px;
  z-index: 50;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--ink);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.3s, visibility 0.3s, transform 0.3s, background-color 0.2s;
}
.totop.is-on { opacity: 1; visibility: visible; transform: translateY(0); }
.totop:hover { background: var(--accent-ink); }

/* ---------- 22. 入场动效（仅在有 JS 时启用，避免无 JS 环境下内容不可见） ---------- */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.72s cubic-bezier(0.22, 0.61, 0.36, 1),
    transform 0.72s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.js [data-reveal].is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js [data-reveal] { opacity: 1; transform: none; transition: none; }
  .topology__dot i { animation: none; }
  .btn:hover, .card:hover { transform: none; }
}

/* ---------- 23. 响应式 ---------- */
@media (max-width: 1080px) {
  .hero__grid { grid-template-columns: 1fr; gap: 48px; }
  .hero { padding: calc(var(--head-h) + 72px) 0 76px; }
  .cards, .cards--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cards--2 { grid-template-columns: 1fr; }
  .steps { grid-template-columns: repeat(3, minmax(0, 1fr)); row-gap: 32px; }
  .deploy { grid-template-columns: 1fr; }
  .platform { grid-template-columns: 1fr; }
  .clients { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .client:nth-child(6n) { border-inline-end: 1px solid var(--line); }
  .client:nth-child(4n) { border-inline-end: 0; }
  .case { grid-template-columns: 52px minmax(0, 1fr); }
  .case__result { grid-column: 2 / 3; }
  .split { grid-template-columns: 1fr; gap: 40px; }
  .site-footer__grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stat:nth-child(2) { border-inline-end: 0; }
  .stat:nth-child(-n + 2) { border-bottom: 1px solid var(--line); }
}

@media (max-width: 820px) {
  .nav, .nav__cta { display: none; }
  .nav-toggle { display: flex; }
  .site-header.is-open .nav {
    display: flex;
    position: absolute;
    top: var(--head-h);
    inset-inline-start: 0;
    inset-inline-end: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: #fff;
    border-bottom: 1px solid var(--line);
    padding: 10px 20px 18px;
    box-shadow: var(--shadow);
  }
  .site-header.is-open .nav a { padding: 13px 12px; border-radius: 8px; }
  .site-header.is-open .nav a.is-active::after { display: none; }
  .section { padding: 66px 0; }
  .pagehead { padding: calc(var(--head-h) + 60px) 0 56px; }
}

@media (max-width: 620px) {
  .wrap { padding: 0 20px; }
  body { font-size: 15px; }
  .cards, .cards--4 { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; row-gap: 0; }
  .step { padding: 26px 0 0; border-bottom: 1px solid var(--line); padding-bottom: 22px; }
  .step:last-child { border-bottom: 0; }
  .clients { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .client:nth-child(4n) { border-inline-end: 1px solid var(--line); }
  .client:nth-child(2n) { border-inline-end: 0; }
  .rulers { grid-template-columns: 1fr; }
  .form__row { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr; }
  .stat { border-inline-end: 0; border-bottom: 1px solid var(--line); }
  .stat:last-child { border-bottom: 0; }
  .stat:nth-child(-n + 2) { border-bottom: 1px solid var(--line); }
  .case { grid-template-columns: 1fr; gap: 18px; }
  .case__result { grid-column: 1 / 2; }
  .case__num { font-size: 24px; padding-top: 0; }
  .site-footer__grid { grid-template-columns: 1fr; }
  .layer { grid-template-columns: 1fr; gap: 8px; }
  .layer__key { padding-inline-start: 14px; }
  .cta-row .btn { width: 100%; }
  .platform__card { padding: 26px 22px 24px; }
  .platform__name { font-size: 21px; }
  .platform__top { flex-direction: column; align-items: flex-start; gap: 10px; }
}


/* ---------- 24. 语言切换器 ---------- */
.lang { position: relative; margin-inline-start: 6px; flex-shrink: 0; }
.lang__btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 38px;
  padding: 0 11px;
  border-radius: 9px;
  border: 1px solid var(--line);
  font-size: 13.5px;
  color: var(--tx-2);
  transition: color 0.2s, background-color 0.2s, border-color 0.2s;
}
.lang__btn:hover { color: var(--tx); background: rgba(13, 26, 43, 0.045); }
.lang__btn svg { flex-shrink: 0; }
.lang__cur { font-weight: 600; white-space: nowrap; }
.lang__chev { width: 11px; height: 11px; opacity: 0.72; transition: transform 0.22s; }
.lang.is-open .lang__chev { transform: rotate(180deg); }

.lang__menu {
  position: absolute;
  inset-inline-end: 0;
  top: calc(100% + 8px);
  min-width: 178px;
  padding: 6px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  display: none;
  z-index: 70;
}
.lang.is-open .lang__menu { display: block; }
#site-header .nav .lang__menu a {
  display: block;
  padding: 9px 11px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 400;
  color: var(--tx-2);
}
#site-header .nav .lang__menu a:hover { background: var(--mist); color: var(--tx); }
#site-header .nav .lang__menu a[aria-current="true"] {
  background: var(--accent-soft);
  color: var(--accent-ink);
  font-weight: 700;
}
/* 页首浮在深色首屏之上时，按钮反白；滚动变白底后回到深色 */
.site-header .lang__btn {
  color: rgba(255, 255, 255, 0.76);
  border-color: rgba(255, 255, 255, 0.3);
}
.site-header .lang__btn:hover { color: #fff; background: rgba(255, 255, 255, 0.1); }
.site-header.is-solid .lang__btn { color: var(--tx-2); border-color: var(--line); }
.site-header.is-solid .lang__btn:hover { color: var(--tx); background: rgba(13, 26, 43, 0.045); }

/* ---------- 25. 语言网关（站点根） ---------- */
.gateway-body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: var(--ink);
  color: var(--on-ink);
  text-align: center;
}
.gateway { padding: 56px 24px; max-width: 760px; width: 100%; }
.gateway__brand { display: flex; flex-direction: column; align-items: center; gap: 13px; }
.gateway__mark { width: 54px; height: 54px; border-radius: 15px; }
.gateway__name { font-size: 27px; font-weight: 700; letter-spacing: 0.22em; color: #fff; }
.gateway__cn { font-size: 13px; letter-spacing: 0.3em; color: var(--on-ink-2); }
.gateway__hint { margin-top: 30px; font-size: 14px; color: var(--on-ink-2); }
.gateway__grid {
  margin-top: 20px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}
.langcard {
  display: block;
  padding: 15px 10px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.04);
  transition: background-color 0.22s, border-color 0.22s, transform 0.22s;
}
.langcard:hover {
  background: rgba(18, 181, 165, 0.16);
  border-color: var(--accent);
  transform: translateY(-2px);
}
.langcard__n { font-size: 14.5px; color: var(--on-ink); }
.gateway__foot { margin-top: 32px; font-size: 12.5px; color: var(--on-ink-3); }

/* ---------- 26. 各语言文字的字体回退（不引入外部字体） ---------- */
html[lang="ja"] body {
  font-family: "Noto Sans JP", "Yu Gothic UI", "Yu Gothic", Meiryo,
    "Hiragino Kaku Gothic ProN", "Microsoft YaHei UI", system-ui, sans-serif;
}
html[lang="ko"] body {
  font-family: "Noto Sans KR", "Malgun Gothic", "Apple SD Gothic Neo",
    system-ui, sans-serif;
}
html[lang="ar"] body {
  font-family: "Segoe UI", Tahoma, "Noto Naskh Arabic", "Traditional Arabic",
    "Geeza Pro", system-ui, sans-serif;
  line-height: 1.95;
}

/* ---------- 27. 从右到左（阿拉伯语） ---------- */
[dir="rtl"] .link-arrow svg { transform: scaleX(-1); }
[dir="rtl"] .link-arrow:hover svg { transform: scaleX(-1) translateX(3px); }

@media (max-width: 820px) {
  .lang { margin-inline-start: 0; width: 100%; }
  .lang__btn {
    width: 100%;
    justify-content: space-between;
    height: 46px;
    margin-top: 8px;
  }
  .lang__menu {
    position: static;
    min-width: 0;
    margin-top: 6px;
    padding: 0;
    border: 0;
    box-shadow: none;
    display: none;
  }
  .lang.is-open .lang__menu { display: block; }
  #site-header.is-open .nav .lang__menu a { padding: 11px 12px; }
}

@media (max-width: 620px) {
  .gateway__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .gateway__name { font-size: 23px; }
}