/* ============================================================
   云邻科技官网 · 设计系统
   ============================================================ */
:root {
  --blue-900: #061a3a;
  --blue-800: #0a2a5e;
  --blue-700: #0b3d91;
  --blue-600: #1565d8;
  --blue-500: #2196f3;
  --blue-300: #7cc0ff;
  --cyan-400: #22d3ee;
  --ink: #101d2e;
  --ink-2: #2b3a4d;
  --muted: #64748b;
  --line: #e2e8f0;
  --bg: #ffffff;
  --bg-soft: #f6f9fd;
  --bg-dark: #07182f;
  --radius: 16px;
  --radius-lg: 24px;
  --shadow-sm: 0 2px 10px rgba(11, 61, 145, .06);
  --shadow: 0 14px 40px rgba(11, 61, 145, .10);
  --shadow-lg: 0 30px 70px rgba(6, 26, 58, .18);
  --ease: cubic-bezier(.22, .61, .36, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Segoe UI", system-ui, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
ul { list-style: none; }
button { font: inherit; cursor: pointer; border: none; background: none; }
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 26px; }
.mono { font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace; }

/* ---------- 顶部导航 ---------- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 200;
  transition: background .35s var(--ease), box-shadow .35s var(--ease), border-color .35s;
  border-bottom: 1px solid transparent;
}
.nav.solid {
  background: rgba(255, 255, 255, .9);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom-color: var(--line);
  box-shadow: 0 4px 24px rgba(6, 26, 58, .06);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: 11px; }
.brand img { width: 38px; height: 38px; object-fit: contain; }
.brand-txt { font-weight: 700; font-size: 19px; letter-spacing: .5px; transition: color .3s; }
.brand-txt small { display: block; font-size: 10px; font-weight: 500; letter-spacing: 2.4px; opacity: .6; line-height: 1.4; }
.nav.on-dark .brand-txt { color: #fff; }
.menu { display: flex; align-items: center; gap: 30px; }
.menu a { font-size: 14.5px; font-weight: 500; transition: color .2s, opacity .2s; position: relative; }
.nav.on-dark .menu a { color: rgba(255, 255, 255, .82); }
.menu a::after {
  content: ""; position: absolute; left: 0; bottom: -6px; width: 0; height: 2px;
  background: var(--blue-500); transition: width .25s var(--ease);
}
.menu a:hover::after { width: 100%; }
.menu a:hover { color: var(--blue-600); }
.nav.on-dark .menu a:hover { color: #fff; }
.nav-cta {
  display: inline-flex; align-items: center; gap: 6px;
  background: linear-gradient(135deg, var(--blue-600), var(--blue-500));
  color: #fff !important; padding: 9px 20px; border-radius: 999px; font-size: 14px !important;
  box-shadow: 0 8px 22px rgba(33, 150, 243, .32);
}
.nav-cta::after { display: none; }
.nav-cta:hover { transform: translateY(-1px); }
.burger { display: none; width: 40px; height: 40px; border-radius: 10px; }
.burger span { display: block; width: 19px; height: 2px; background: currentColor; margin: 4px auto; transition: .3s; }
.nav.on-dark .burger { color: #fff; }
.nav.solid .burger { color: var(--ink); }

/* ---------- 首屏 ---------- */
.hero {
  position: relative; padding: 132px 0 118px; overflow: hidden;
  background: radial-gradient(120% 90% at 78% 8%, #1462c9 0%, #0a2a5e 46%, #061a3a 100%);
  color: #fff; isolation: isolate;
}
#heroCanvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: -1; opacity: .55; }
.hero::before {
  content: ""; position: absolute; left: -10%; top: -30%; width: 620px; height: 620px;
  background: radial-gradient(circle, rgba(34, 211, 238, .28), transparent 68%);
  filter: blur(20px); z-index: -1;
}
.hero::after {
  content: ""; position: absolute; right: -8%; bottom: -40%; width: 560px; height: 560px;
  background: radial-gradient(circle, rgba(33, 150, 243, .3), transparent 70%);
  filter: blur(30px); z-index: -1;
}
.hero-grid { display: grid; grid-template-columns: 1.06fr .94fr; gap: 56px; align-items: center; }
.hero-tag {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(124, 192, 255, .12); border: 1px solid rgba(124, 192, 255, .32);
  color: #a9d4ff; padding: 6px 15px; border-radius: 999px; font-size: 12.5px; letter-spacing: 1.6px;
}
.hero-tag i { width: 6px; height: 6px; border-radius: 50%; background: var(--cyan-400); box-shadow: 0 0 10px var(--cyan-400); animation: pulse 2s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; transform: scale(1); } 50% { opacity: .45; transform: scale(.8); } }
.hero h1 {
  margin-top: 22px; font-size: clamp(32px, 4.4vw, 56px); line-height: 1.22; letter-spacing: 1px;
  font-weight: 800;
}
.hero h1 .grad {
  background: linear-gradient(100deg, #7cc0ff 10%, #22d3ee 55%, #a7f3d0 95%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub { margin-top: 20px; font-size: 17px; line-height: 1.85; color: rgba(226, 240, 255, .82); max-width: 620px; }
.hero-actions { margin-top: 34px; display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: 14px 30px; border-radius: 12px; font-size: 15.5px; font-weight: 600;
  transition: transform .22s var(--ease), box-shadow .22s var(--ease), background .22s;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: linear-gradient(135deg, #1e7bec, #22d3ee); color: #04162c; box-shadow: 0 14px 34px rgba(34, 211, 238, .26); }
.btn-primary:hover { box-shadow: 0 18px 42px rgba(34, 211, 238, .38); }
.btn-glass { border: 1px solid rgba(255, 255, 255, .35); color: #fff; background: rgba(255, 255, 255, .07); backdrop-filter: blur(6px); }
.btn-glass:hover { background: rgba(255, 255, 255, .16); }
.btn-line { border: 1.5px solid var(--blue-600); color: var(--blue-600); }
.btn-line:hover { background: rgba(21, 101, 216, .06); }

/* 首屏右侧：仪表盘卡片 */
.hero-visual { position: relative; }
.panel {
  background: rgba(12, 34, 66, .72); border: 1px solid rgba(124, 192, 255, .22);
  border-radius: 20px; padding: 22px; backdrop-filter: blur(16px);
  box-shadow: 0 30px 80px rgba(0, 0, 0, .42);
  animation: float 7s ease-in-out infinite;
}
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }
.panel-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.panel-head b { font-size: 14px; letter-spacing: .5px; }
.live { display: inline-flex; align-items: center; gap: 6px; font-size: 11.5px; color: #7ee7c7; background: rgba(45, 212, 191, .12); padding: 3px 10px; border-radius: 999px; }
.live i { width: 6px; height: 6px; border-radius: 50%; background: #2dd4bf; box-shadow: 0 0 8px #2dd4bf; animation: pulse 1.8s infinite; }
.panel-kpis { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 18px; }
.kpi { background: rgba(255, 255, 255, .05); border: 1px solid rgba(255, 255, 255, .08); border-radius: 12px; padding: 12px 13px; }
.kpi span { display: block; font-size: 11.5px; color: rgba(198, 219, 245, .7); margin-bottom: 4px; }
.kpi b { font-size: 19px; font-weight: 700; letter-spacing: .5px; }
.kpi b em { font-size: 11px; font-weight: 500; font-style: normal; color: #7ee7c7; margin-left: 3px; }
.spark { display: flex; align-items: flex-end; gap: 5px; height: 62px; padding: 6px 2px 0; }
.spark i {
  flex: 1; border-radius: 4px 4px 2px 2px; background: linear-gradient(180deg, #47c7ff, rgba(34, 211, 238, .18));
  animation: grow .9s var(--ease) both;
}
@keyframes grow { from { transform: scaleY(.05); opacity: .2; } to { transform: scaleY(1); opacity: 1; } }
.panel-foot { margin-top: 14px; display: flex; justify-content: space-between; font-size: 11.5px; color: rgba(198, 219, 245, .62); }
.chip-float {
  position: absolute; background: rgba(255, 255, 255, .95); color: var(--blue-700);
  border-radius: 12px; padding: 9px 14px; font-size: 12.5px; font-weight: 600;
  box-shadow: 0 16px 34px rgba(6, 26, 58, .3); display: flex; align-items: center; gap: 7px;
}
.chip-float.c1 { top: -18px; right: 16px; animation: float 6s ease-in-out infinite .4s; }
.chip-float.c2 { bottom: -20px; left: -18px; animation: float 7.5s ease-in-out infinite .9s; }
.chip-float i { width: 7px; height: 7px; border-radius: 50%; background: #16a34a; }

/* 首屏底部指标条 */
.hero-stats {
  margin-top: 66px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px;
  border-top: 1px solid rgba(255, 255, 255, .12); padding-top: 30px;
}
.hstat b { display: block; font-size: 30px; font-weight: 800; letter-spacing: .5px; }
.hstat b em { font-size: 14px; font-weight: 600; font-style: normal; margin-left: 3px; color: rgba(169, 212, 255, .8); }
.hstat span { font-size: 12.8px; color: rgba(198, 219, 245, .66); }

/* ---------- 通用区块 ---------- */
section { padding: 96px 0; position: relative; }
.sec-head { max-width: 720px; margin: 0 auto 54px; text-align: center; }
.kicker {
  display: inline-block; font-size: 12px; letter-spacing: 3.4px; font-weight: 700;
  color: var(--blue-600); text-transform: uppercase;
}
.sec-head h2 { font-size: clamp(26px, 3vw, 38px); margin-top: 10px; letter-spacing: .5px; line-height: 1.32; }
.sec-head p { margin-top: 14px; color: var(--muted); font-size: 15.6px; }
.soft { background: var(--bg-soft); }
.dark-sec { background: var(--bg-dark); color: #dce9f8; }
.dark-sec .sec-head h2 { color: #fff; }
.dark-sec .sec-head p { color: rgba(196, 217, 240, .72); }
.dark-sec .kicker { color: var(--blue-300); }

/* ---------- 能力矩阵 ---------- */
.cap-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.cap {
  position: relative; background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 26px; transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s;
  overflow: hidden;
}
.cap::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 3px;
  background: linear-gradient(90deg, var(--blue-600), var(--cyan-400));
  transform: scaleX(0); transform-origin: left; transition: transform .35s var(--ease);
}
.cap:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: #cfe1f8; }
.cap:hover::before { transform: scaleX(1); }
.cap-ico {
  width: 50px; height: 50px; border-radius: 13px; display: grid; place-items: center;
  background: linear-gradient(140deg, #e8f2ff, #dff5ff); color: var(--blue-600); margin-bottom: 18px;
}
.cap h3 { font-size: 18px; margin-bottom: 8px; }
.cap p { font-size: 14.2px; color: var(--muted); }
.cap ul { margin-top: 14px; }
.cap ul li { font-size: 13.4px; color: var(--ink-2); padding: 3.5px 0 3.5px 18px; position: relative; }
.cap ul li::before {
  content: ""; position: absolute; left: 2px; top: 12px; width: 6px; height: 6px;
  border-radius: 2px; background: var(--blue-500); opacity: .65;
}

/* ---------- 解决方案（标签页） ---------- */
.tabs { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; margin-bottom: 34px; }
.tab {
  padding: 10px 22px; border-radius: 999px; font-size: 14.5px; font-weight: 600;
  color: var(--muted); background: #fff; border: 1px solid var(--line); transition: .25s;
}
.tab.on { background: var(--blue-700); color: #fff; border-color: var(--blue-700); box-shadow: 0 10px 24px rgba(11, 61, 145, .22); }
.tab-panel { display: none; }
.tab-panel.on { display: block; animation: fadeUp .45s var(--ease) both; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
.sol-card {
  display: grid; grid-template-columns: 1.05fr .95fr; gap: 40px; align-items: center;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 40px;
  box-shadow: var(--shadow-sm);
}
.sol-card h3 { font-size: 24px; margin-bottom: 12px; }
.sol-card > div > p { color: var(--muted); font-size: 15px; }
.sol-list { margin-top: 20px; display: grid; gap: 12px; }
.sol-list li { display: flex; gap: 12px; font-size: 14.4px; color: var(--ink-2); }
.sol-list li .tick {
  flex: 0 0 20px; width: 20px; height: 20px; border-radius: 50%; display: grid; place-items: center;
  background: rgba(21, 101, 216, .1); color: var(--blue-600); font-size: 11px; margin-top: 3px;
}
.sol-visual {
  background: linear-gradient(150deg, #f2f8ff, #e6f4ff); border-radius: 18px; padding: 22px;
  border: 1px solid #d9eafa;
}
.vrow {
  display: flex; align-items: center; justify-content: space-between; background: #fff;
  border: 1px solid #e6eef8; border-radius: 11px; padding: 12px 15px; margin-bottom: 10px; font-size: 13.4px;
  box-shadow: 0 3px 10px rgba(11, 61, 145, .04);
}
.vrow:last-child { margin-bottom: 0; }
.vrow b { color: var(--ink); font-weight: 600; }
.vrow .val { color: var(--blue-600); font-weight: 700; }
.bar-mini { height: 6px; border-radius: 4px; background: #e8f0fb; overflow: hidden; width: 96px; }
.bar-mini i { display: block; height: 100%; border-radius: 4px; background: linear-gradient(90deg, #1e7bec, #22d3ee); }

/* ---------- 技术架构 ---------- */
.arch { display: grid; gap: 14px; max-width: 940px; margin: 0 auto; }
.arch-layer {
  display: grid; grid-template-columns: 150px 1fr; gap: 20px; align-items: center;
  background: rgba(255, 255, 255, .045); border: 1px solid rgba(124, 192, 255, .16);
  border-radius: 14px; padding: 18px 22px; transition: .3s;
}
.arch-layer:hover { background: rgba(124, 192, 255, .09); border-color: rgba(124, 192, 255, .34); transform: translateX(4px); }
.arch-layer > b { font-size: 14px; color: var(--blue-300); letter-spacing: .6px; }
.arch-items { display: flex; flex-wrap: wrap; gap: 9px; }
.arch-items span {
  font-size: 13px; padding: 6px 14px; border-radius: 8px; color: #d7e8fb;
  background: rgba(255, 255, 255, .07); border: 1px solid rgba(255, 255, 255, .08);
}

/* ---------- 数据流 ---------- */
.flow { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; margin-top: 46px; }
.flow-step { text-align: center; position: relative; }
.flow-step::after {
  content: ""; position: absolute; top: 24px; right: -10px; width: 20px; height: 1px;
  background: linear-gradient(90deg, rgba(124, 192, 255, .5), transparent);
}
.flow-step:last-child::after { display: none; }
.flow-dot {
  width: 48px; height: 48px; margin: 0 auto 12px; border-radius: 50%; display: grid; place-items: center;
  background: rgba(124, 192, 255, .12); border: 1px solid rgba(124, 192, 255, .35); color: var(--blue-300);
  font-size: 14px; font-weight: 700;
}
.flow-step b { display: block; font-size: 14px; color: #fff; }
.flow-step span { font-size: 12.4px; color: rgba(196, 217, 240, .64); }

/* ---------- 安全合规 ---------- */
.safe-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 55px; align-items: center; }
.safe-list { display: grid; gap: 16px; }
.safe-item {
  display: flex; gap: 16px; background: #fff; border: 1px solid var(--line); border-radius: 14px;
  padding: 18px 20px; transition: .25s;
}
.safe-item:hover { box-shadow: var(--shadow); transform: translateY(-3px); border-color: #cfe1f8; }
.safe-ico {
  flex: 0 0 42px; width: 42px; height: 42px; border-radius: 11px; display: grid; place-items: center;
  background: linear-gradient(140deg, #e8f7ef, #e2f6ff); color: #0f9b6c;
}
.safe-item b { font-size: 15px; display: block; margin-bottom: 3px; }
.safe-item p { font-size: 13.6px; color: var(--muted); }
.shield-card {
  background: radial-gradient(120% 120% at 20% 0%, #12386c, #071a33); border-radius: var(--radius-lg);
  padding: 38px; color: #d9e9fb; box-shadow: var(--shadow-lg);
}
.shield-card h3 { font-size: 19px; color: #fff; margin-bottom: 18px; }
.shield-row { display: flex; justify-content: space-between; padding: 13px 0; border-bottom: 1px solid rgba(255, 255, 255, .1); font-size: 13.6px; }
.shield-row:last-child { border-bottom: 0; }
.shield-row span { color: rgba(196, 217, 240, .68); }
.shield-row b { color: #7ee7c7; font-weight: 600; }

/* ---------- 流程 ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: s; }
.step-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px 24px;
  position: relative; overflow: hidden; transition: .28s var(--ease);
}
.step-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.step-card::after {
  counter-increment: s; content: "0" counter(s);
  position: absolute; top: 8px; right: 16px; font-size: 46px; font-weight: 800;
  color: #eef5ff; line-height: 1; letter-spacing: -2px;
}
.step-card h3 { font-size: 16.5px; margin-bottom: 8px; position: relative; }
.step-card p { font-size: 13.6px; color: var(--muted); position: relative; }
.step-card .tagline { display: inline-block; margin-top: 14px; font-size: 11.8px; color: var(--blue-600); background: #eaf3ff; padding: 3px 10px; border-radius: 999px; position: relative; }

/* ---------- 团队 ---------- */
.team-grid { display: grid; grid-template-columns: .95fr 1.05fr; gap: 50px; align-items: center; }
.team-bars { display: grid; gap: 16px; }
.tbar b { display: flex; justify-content: space-between; font-size: 14px; margin-bottom: 7px; font-weight: 600; }
.tbar b em { font-style: normal; color: var(--muted); font-weight: 500; }
.tbar-track { height: 9px; background: #e9f1fb; border-radius: 6px; overflow: hidden; }
.tbar-track i { display: block; height: 100%; border-radius: 6px; background: linear-gradient(90deg, #1e7bec, #22d3ee); width: 0; transition: width 1.1s var(--ease); }
.team-note { margin-top: 22px; font-size: 13.6px; color: var(--muted); background: #f4f9ff; border-left: 3px solid var(--blue-500); padding: 12px 16px; border-radius: 0 10px 10px 0; }

/* ---------- FAQ ---------- */
.faq { max-width: 860px; margin: 0 auto; display: grid; gap: 12px; }
.q {
  background: #fff; border: 1px solid var(--line); border-radius: 13px; overflow: hidden;
  transition: box-shadow .25s, border-color .25s;
}
.q.open { box-shadow: var(--shadow); border-color: #cfe1f8; }
.q-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 19px 22px; font-weight: 600; font-size: 15px; }
.q-head i {
  flex: 0 0 22px; width: 22px; height: 22px; border-radius: 50%; border: 1px solid var(--line);
  display: grid; place-items: center; color: var(--blue-600); font-style: normal; font-size: 15px;
  transition: .3s; line-height: 1;
}
.q.open .q-head i { transform: rotate(45deg); background: var(--blue-600); color: #fff; border-color: var(--blue-600); }
.q-body { max-height: 0; overflow: hidden; transition: max-height .38s var(--ease); }
.q-body p { padding: 0 22px 20px; font-size: 14px; color: var(--muted); }

/* ---------- 联系 ---------- */
.contact-sec { background: radial-gradient(110% 100% at 50% 0%, #0d2f5f 0%, #061a3a 62%); color: #e6f0fb; }
.contact-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 46px; }
.cbox {
  background: rgba(255, 255, 255, .05); border: 1px solid rgba(124, 192, 255, .18); border-radius: 15px;
  padding: 24px 22px; transition: .28s;
}
.cbox:hover { background: rgba(124, 192, 255, .1); transform: translateY(-4px); border-color: rgba(124, 192, 255, .38); }
.cbox .ico { font-size: 20px; margin-bottom: 10px; }
.cbox b { display: block; font-size: 14px; color: #fff; margin-bottom: 5px; }
.cbox span, .cbox a { font-size: 13.6px; color: rgba(198, 219, 245, .78); word-break: break-all; }
.cbox a:hover { color: #fff; }
.contact-cta { margin-top: 44px; display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ---------- 页脚 ---------- */
footer { background: #041020; color: #8fa6c0; padding: 54px 0 30px; font-size: 13.4px; }
.foot-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 34px; padding-bottom: 34px; border-bottom: 1px solid rgba(255, 255, 255, .08); }
.foot-brand { display: flex; align-items: center; gap: 10px; color: #fff; font-weight: 600; font-size: 15.5px; margin-bottom: 12px; }
.foot-brand img { width: 30px; height: 30px; }
.foot-top p { font-size: 13px; line-height: 1.85; max-width: 300px; }
.foot-col b { display: block; color: #fff; font-size: 13.6px; margin-bottom: 12px; font-weight: 600; }
.foot-col a { display: block; padding: 4px 0; transition: color .2s; }
.foot-col a:hover { color: #fff; }
.foot-bottom { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; padding-top: 22px; font-size: 12.6px; }
.foot-bottom a { color: #8fa6c0; }
.foot-bottom a:hover { color: #fff; }

/* ---------- 滚动动画 ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .08s; }
.reveal.d2 { transition-delay: .16s; }
.reveal.d3 { transition-delay: .24s; }
.reveal.d4 { transition-delay: .32s; }
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}

/* ---------- 法务页 ---------- */
.legal { padding: 140px 0 90px; }
.legal h1 { font-size: 32px; margin-bottom: 8px; }
.legal .upd { color: var(--muted); font-size: 13.5px; margin-bottom: 34px; }
.legal article { max-width: 820px; }
.legal h2 { font-size: 19px; margin: 32px 0 10px; }
.legal p, .legal li { font-size: 14.6px; color: var(--ink-2); line-height: 1.95; }
.legal ul { padding-left: 20px; list-style: disc; margin-top: 8px; }
.legal ul li { margin-bottom: 5px; }
.legal a { color: var(--blue-600); }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; gap: 44px; }
  .hero-visual { max-width: 460px; }
  .cap-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: repeat(2, 1fr); }
  .sol-card { grid-template-columns: 1fr; padding: 30px; }
  .team-grid, .safe-grid { grid-template-columns: 1fr; gap: 34px; }
  .foot-top { grid-template-columns: 1fr 1fr; }
  .flow { grid-template-columns: repeat(3, 1fr); row-gap: 24px; }
  .flow-step::after { display: none; }
}
@media (max-width: 860px) {
  .menu { display: none; }
  .burger { display: block; }
  .hero { padding: 108px 0 84px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 22px; }
  section { padding: 68px 0; }
  .arch-layer { grid-template-columns: 1fr; gap: 10px; }
}
@media (max-width: 560px) {
  .cap-grid, .steps, .contact-grid, .flow { grid-template-columns: 1fr; }
  .foot-top { grid-template-columns: 1fr; }
  .hero h1 { font-size: 30px; }
  .kpi b { font-size: 16px; }
  .panel { padding: 18px; }
}