/* =========================================================
   揭阳市蔚蓝科技有限公司 · 官方网站
   Design System / style.css
   ========================================================= */

/* ---------- 1. Tokens ---------- */
:root {
  --ink: #0B1F33;
  --ink-soft: #16324A;
  --body: #44586C;
  --muted: #7C8FA2;
  --line: #E4ECF4;
  --line-strong: #D3E0EC;
  --bg: #FFFFFF;
  --bg-soft: #F5F9FD;
  --bg-deep: #071726;

  --brand: #1668E3;
  --brand-light: #3E8BFF;
  --brand-deep: #0B4FB0;
  --cyan: #1FB6C9;

  --grad: linear-gradient(135deg, #3E8BFF 0%, #1668E3 55%, #0B4FB0 100%);
  --grad-soft: linear-gradient(180deg, #FFFFFF 0%, #F5F9FD 100%);

  --r-sm: 10px;
  --r-md: 16px;
  --r-lg: 22px;
  --r-pill: 999px;

  --shadow-xs: 0 1px 2px rgba(11, 31, 51, 0.05);
  --shadow-sm: 0 4px 14px -6px rgba(11, 31, 51, 0.12);
  --shadow-md: 0 18px 40px -20px rgba(11, 31, 51, 0.28);
  --shadow-lg: 0 36px 80px -40px rgba(11, 31, 51, 0.42);

  --maxw: 1180px;
  --nav-h: 74px;

  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

/* ---------- 2. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 16px);
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.78;
  color: var(--body);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5 {
  margin: 0;
  color: var(--ink);
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: -0.015em;
}

p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; border: 0; background: none; cursor: pointer; }
input, textarea, select { font: inherit; color: inherit; }

::selection { background: rgba(22, 104, 227, 0.16); }

/* ---------- 3. Layout ---------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 104px 0; position: relative; }
.section--soft { background: var(--bg-soft); }
.section--tight { padding: 72px 0; }
.section--deep { background: var(--bg-deep); color: #B9CBDD; }
.section--deep h2, .section--deep h3 { color: #fff; }

.section-head { max-width: 720px; margin-bottom: 56px; }
.section-head--center { margin-left: auto; margin-right: auto; text-align: center; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--brand);
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  border-radius: 2px;
  background: var(--brand);
}

.section-head--center .eyebrow::after {
  content: "";
  width: 22px;
  height: 2px;
  border-radius: 2px;
  background: var(--brand);
}

.section-title {
  font-size: clamp(26px, 3.2vw, 38px);
  letter-spacing: -0.025em;
}

.section-desc {
  margin-top: 18px;
  font-size: 16.5px;
  color: var(--body);
}

.lead { font-size: 17px; }

/* ---------- 4. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 14px 26px;
  border-radius: var(--r-sm);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.01em;
  white-space: nowrap;
  transition: transform 0.22s ease, box-shadow 0.22s ease,
    background-color 0.22s ease, border-color 0.22s ease, color 0.22s ease;
}

.btn svg { width: 16px; height: 16px; transition: transform 0.22s ease; }
.btn:hover svg { transform: translateX(3px); }

.btn-primary {
  color: #fff;
  background: var(--grad);
  box-shadow: 0 10px 24px -12px rgba(22, 104, 227, 0.85);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 34px -14px rgba(22, 104, 227, 0.9);
}

.btn-ghost {
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-xs);
}

.btn-ghost:hover {
  transform: translateY(-2px);
  border-color: #B9CCDE;
  box-shadow: var(--shadow-sm);
}

.btn-sm { padding: 10px 18px; font-size: 14px; border-radius: 9px; }

/* ---------- 5. Header ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 90;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease, box-shadow 0.3s ease,
    background-color 0.3s ease;
}

.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.94);
  border-bottom-color: var(--line);
  box-shadow: 0 8px 24px -20px rgba(11, 31, 51, 0.5);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand { display: inline-flex; align-items: center; gap: 12px; }

.logo-mark {
  width: 40px;
  height: 40px;
  flex: none;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: var(--grad);
  box-shadow: 0 8px 18px -10px rgba(22, 104, 227, 0.9);
}

.logo-mark svg { width: 24px; height: 24px; }

.brand-text { display: flex; flex-direction: column; line-height: 1.1; }

.brand-text strong {
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0.02em;
}

.brand-text em {
  margin-top: 3px;
  font-style: normal;
  font-size: 9.5px;
  font-weight: 600;
  letter-spacing: 0.22em;
  color: var(--muted);
}

.nav { display: flex; align-items: center; gap: 4px; }

.nav > a {
  position: relative;
  padding: 9px 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--ink-soft);
  border-radius: 8px;
  transition: color 0.2s ease, background-color 0.2s ease;
}

.nav > a:not(.nav-cta):hover { color: var(--brand); background: rgba(22, 104, 227, 0.06); }

.nav > a.is-active { color: var(--brand); font-weight: 600; }

.nav > a.is-active::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 2px;
  width: 16px;
  height: 2px;
  border-radius: 2px;
  transform: translateX(-50%);
  background: var(--brand);
}

.nav-cta { margin-left: 12px; }

.nav > a.nav-cta { color: #fff; }

.nav > a.nav-cta:hover { color: #fff; }

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #fff;
  padding: 0;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 1.8px;
  border-radius: 2px;
  background: var(--ink);
  transition: transform 0.28s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(5.8px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-5.8px) rotate(-45deg); }

/* ---------- 6. Hero ---------- */
.hero {
  position: relative;
  padding: calc(var(--nav-h) + 92px) 0 96px;
  overflow: hidden;
  background:
    radial-gradient(1100px 520px at 78% -8%, rgba(31, 182, 201, 0.13), transparent 62%),
    radial-gradient(900px 480px at 8% 4%, rgba(22, 104, 227, 0.13), transparent 60%),
    linear-gradient(180deg, #FBFDFF 0%, #FFFFFF 100%);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(22, 104, 227, 0.055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(22, 104, 227, 0.055) 1px, transparent 1px);
  background-size: 66px 66px;
  -webkit-mask-image: radial-gradient(ellipse 78% 62% at 50% 0%, #000 30%, transparent 100%);
  mask-image: radial-gradient(ellipse 78% 62% at 50% 0%, #000 30%, transparent 100%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.06fr 0.94fr;
  gap: 64px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 7px 14px 7px 10px;
  margin-bottom: 26px;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-pill);
  background: rgba(255, 255, 255, 0.8);
  font-size: 13px;
  font-weight: 500;
  color: var(--ink-soft);
  box-shadow: var(--shadow-xs);
}

.hero-badge i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #22C08A;
  box-shadow: 0 0 0 4px rgba(34, 192, 138, 0.16);
}

.hero h1 {
  font-size: clamp(32px, 4.4vw, 54px);
  line-height: 1.18;
  letter-spacing: -0.035em;
}

.hero h1 .grad {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-sub {
  max-width: 520px;
  margin-top: 24px;
  font-size: 17px;
  line-height: 1.85;
  color: var(--body);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 36px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 32px;
  margin-top: 48px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}

.hero-meta div { display: flex; flex-direction: column; gap: 2px; }

.hero-meta b {
  font-size: 21px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

.hero-meta span { font-size: 12.5px; color: var(--muted); letter-spacing: 0.02em; }

.hero-meta b .unit {
  margin-left: 1px;
  font-size: 16px;
  font-weight: 700;
  color: var(--brand);
  vertical-align: baseline;
}

/* Hero visual */
.hero-visual { position: relative; padding: 12px 0; }

.hv-main {
  position: relative;
  border-radius: var(--r-lg);
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-lg);
  padding: 22px;
  transform: perspective(1400px) rotateY(-6deg) rotateX(2deg);
  transition: transform 0.6s cubic-bezier(0.2, 0.7, 0.3, 1);
}

.hero-visual:hover .hv-main { transform: perspective(1400px) rotateY(-2deg) rotateX(0deg); }

.hv-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.hv-top h4 { font-size: 14px; font-weight: 600; }

.hv-top span { font-size: 11.5px; color: var(--muted); letter-spacing: 0.04em; }

.hv-dots { display: flex; gap: 5px; }
.hv-dots i { width: 7px; height: 7px; border-radius: 50%; background: var(--line-strong); }
.hv-dots i:first-child { background: #FF6B6B; }
.hv-dots i:nth-child(2) { background: #FFC14D; }
.hv-dots i:nth-child(3) { background: #35D07F; }

.hv-rows { display: grid; gap: 14px; margin-top: 18px; }

.hv-row { display: grid; grid-template-columns: 1fr auto; gap: 10px; align-items: center; }

.hv-row .label {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 13.5px;
  color: var(--ink-soft);
}

.hv-row .label i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #22C08A;
  flex: none;
}

.hv-row .label i.warn { background: #FFB020; }
.hv-row .label i.idle { background: var(--line-strong); }

.hv-row .val { font-size: 12.5px; color: var(--muted); font-variant-numeric: tabular-nums; }

.hv-bar {
  grid-column: 1 / -1;
  height: 6px;
  border-radius: 3px;
  background: #EFF4FA;
  overflow: hidden;
}

.hv-bar i {
  display: block;
  height: 100%;
  border-radius: 3px;
  background: var(--grad);
  width: 0;
  transition: width 1.4s cubic-bezier(0.2, 0.7, 0.3, 1);
}

.hv-bar i.warn { background: linear-gradient(90deg, #FFC14D, #FF9F1A); }
.hv-bar i.idle { background: linear-gradient(90deg, #CBD8E5, #B4C6D8); }

.hv-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: var(--muted);
}

.hv-chip {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: 14px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-md);
  animation: floaty 7s ease-in-out infinite;
}

.hv-chip b { display: block; font-size: 13.5px; color: var(--ink); line-height: 1.3; }
.hv-chip small { display: block; font-size: 11.5px; color: var(--muted); }

.hv-chip .ico {
  width: 32px;
  height: 32px;
  flex: none;
  display: grid;
  place-items: center;
  border-radius: 9px;
  background: rgba(22, 104, 227, 0.09);
  color: var(--brand);
}

.hv-chip .ico svg { width: 16px; height: 16px; }

.hv-chip--a { top: -14px; right: -18px; animation-delay: 0.4s; }
.hv-chip--b { bottom: -22px; left: -26px; animation-delay: 1.6s; }

@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-9px); }
}

/* ---------- 7. Logo strip / domains ---------- */
.domains {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: #fff;
  padding: 26px 0;
}

.domains-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 34px;
}

.domains-label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.domains-list { display: flex; flex-wrap: wrap; gap: 10px; }

.domains-list span {
  padding: 6px 14px;
  border-radius: var(--r-pill);
  background: var(--bg-soft);
  border: 1px solid var(--line);
  font-size: 13.5px;
  color: var(--ink-soft);
}

/* ---------- 8. Cards / Grid ---------- */
.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 30px 28px;
  border-radius: var(--r-md);
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-xs);
  transition: transform 0.3s cubic-bezier(0.2, 0.7, 0.3, 1),
    box-shadow 0.3s ease, border-color 0.3s ease;
}

.card:hover {
  transform: translateY(-5px);
  border-color: #CFE0F0;
  box-shadow: var(--shadow-md);
}

.card-ico {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  margin-bottom: 20px;
  border-radius: 12px;
  background: linear-gradient(150deg, rgba(62, 139, 255, 0.14), rgba(22, 104, 227, 0.07));
  color: var(--brand);
  border: 1px solid rgba(22, 104, 227, 0.12);
}

.card-ico svg { width: 22px; height: 22px; }

.card h3 { font-size: 17.5px; margin-bottom: 10px; }

.card p { font-size: 14.5px; line-height: 1.8; color: var(--body); }

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
}

.card-tags span {
  font-size: 12px;
  color: var(--muted);
  padding: 3px 9px;
  border-radius: 6px;
  background: var(--bg-soft);
}

.card--accent {
  background: linear-gradient(160deg, #0C2540 0%, #071726 100%);
  border-color: #12324F;
}

.card--accent h3 { color: #fff; }
.card--accent p { color: #A9C0D4; }
.card--accent .card-ico {
  background: rgba(62, 139, 255, 0.18);
  border-color: rgba(62, 139, 255, 0.3);
  color: #7FB6FF;
}
.card--accent .card-tags { border-top-color: rgba(255, 255, 255, 0.1); }
.card--accent .card-tags span { background: rgba(255, 255, 255, 0.06); color: #9DB4C9; }

/* ---------- 9. Steps ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: step; }

.step {
  position: relative;
  padding: 28px 24px 26px;
  border-radius: var(--r-md);
  background: #fff;
  border: 1px solid var(--line);
  counter-increment: step;
}

.step::before {
  content: "0" counter(step);
  display: block;
  margin-bottom: 16px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--brand);
  font-variant-numeric: tabular-nums;
}

.step h3 { font-size: 16px; margin-bottom: 8px; }
.step p { font-size: 14px; line-height: 1.75; color: var(--body); }

/* ---------- 10. Feature split ---------- */
.split {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 72px;
  align-items: center;
}

.split--rev .split-media { order: 2; }

.checklist { display: grid; gap: 18px; margin-top: 30px; }

.checklist li { display: flex; gap: 14px; align-items: flex-start; }

.checklist .tick {
  width: 24px;
  height: 24px;
  flex: none;
  display: grid;
  place-items: center;
  margin-top: 3px;
  border-radius: 50%;
  background: rgba(22, 104, 227, 0.1);
  color: var(--brand);
}

.checklist .tick svg { width: 13px; height: 13px; }

.checklist b { display: block; font-size: 15.5px; color: var(--ink); margin-bottom: 3px; }
.checklist span { font-size: 14.5px; color: var(--body); line-height: 1.7; }

/* Stat panel */
.stat-panel {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.stat-panel div {
  padding: 32px 28px;
  background: #fff;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-panel b {
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.stat-panel b small { font-size: 15px; font-weight: 600; margin-left: 2px; color: var(--brand); }
.stat-panel span { font-size: 13.5px; color: var(--muted); }

/* ---------- 11. Info table ---------- */
.table-wrap {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
  background: #fff;
}

.info-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.5px;
  background: #fff;
}

.info-table th,
.info-table td {
  padding: 15px 20px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.info-table tr:last-child th,
.info-table tr:last-child td { border-bottom: 0; }

.info-table th {
  width: 170px;
  font-weight: 600;
  color: var(--ink-soft);
  background: var(--bg-soft);
  white-space: nowrap;
}

.info-table td { color: var(--body); }

/* 键值对双列表 */
.info-table--kv { table-layout: fixed; }

.info-table--kv th { width: 148px; }
.info-table--kv td { width: auto; }

/* ---------- 12. CTA band ---------- */
.cta-band {
  position: relative;
  overflow: hidden;
  padding: 64px 0;
  background: linear-gradient(120deg, #0A2B4D 0%, #0B4FB0 62%, #1668E3 100%);
}

.cta-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.06) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse 70% 100% at 70% 50%, #000, transparent 78%);
  mask-image: radial-gradient(ellipse 70% 100% at 70% 50%, #000, transparent 78%);
}

.cta-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}

.cta-inner h2 {
  font-size: clamp(24px, 2.8vw, 32px);
  color: #fff;
  letter-spacing: -0.02em;
}

.cta-inner p { margin-top: 10px; color: rgba(255, 255, 255, 0.72); font-size: 15.5px; }

.cta-actions { display: flex; gap: 12px; flex-wrap: wrap; }

.btn-light { background: #fff; color: var(--brand-deep); box-shadow: 0 12px 30px -16px rgba(0, 0, 0, 0.6); }
.btn-light:hover { transform: translateY(-2px); }

.btn-outline-light {
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.34);
  background: rgba(255, 255, 255, 0.06);
}
.btn-outline-light:hover { background: rgba(255, 255, 255, 0.14); transform: translateY(-2px); }

/* ---------- 13. Page hero (sub pages) ---------- */
.page-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--nav-h) + 74px) 0 66px;
  background:
    radial-gradient(900px 400px at 82% 0%, rgba(31, 182, 201, 0.12), transparent 60%),
    radial-gradient(760px 380px at 6% 0%, rgba(22, 104, 227, 0.12), transparent 60%),
    linear-gradient(180deg, #FBFDFF, #fff);
  border-bottom: 1px solid var(--line);
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(22, 104, 227, 0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(22, 104, 227, 0.05) 1px, transparent 1px);
  background-size: 66px 66px;
  -webkit-mask-image: radial-gradient(ellipse 70% 90% at 50% 0%, #000 20%, transparent 100%);
  mask-image: radial-gradient(ellipse 70% 90% at 50% 0%, #000 20%, transparent 100%);
}

.page-hero-inner { position: relative; max-width: 780px; }

.crumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 22px;
  font-size: 13px;
  color: var(--muted);
}

.crumb a:hover { color: var(--brand); }
.crumb i { font-style: normal; opacity: 0.5; }

.page-hero h1 {
  font-size: clamp(28px, 3.6vw, 42px);
  letter-spacing: -0.03em;
}

.page-hero p { margin-top: 18px; font-size: 16.5px; max-width: 660px; }

/* ---------- 14. Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 48px;
  align-items: start;
}

.contact-list { display: grid; gap: 14px; }

.contact-item {
  display: flex;
  gap: 16px;
  padding: 22px;
  border-radius: var(--r-md);
  background: #fff;
  border: 1px solid var(--line);
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.contact-item:hover { border-color: #CFE0F0; box-shadow: var(--shadow-sm); }

.contact-item .ico {
  width: 40px;
  height: 40px;
  flex: none;
  display: grid;
  place-items: center;
  border-radius: 11px;
  background: rgba(22, 104, 227, 0.08);
  color: var(--brand);
}

.contact-item .ico svg { width: 18px; height: 18px; }

.contact-item h4 { font-size: 14px; font-weight: 600; color: var(--muted); letter-spacing: 0.04em; margin-bottom: 5px; }
.contact-item p { font-size: 15.5px; color: var(--ink); line-height: 1.65; }
.contact-item p small { display: block; font-size: 13px; color: var(--muted); margin-top: 3px; }

.form-card {
  padding: 34px;
  border-radius: var(--r-lg);
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-md);
}

.form-card h3 { font-size: 19px; margin-bottom: 6px; }
.form-card > p { font-size: 14px; color: var(--muted); margin-bottom: 26px; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.field { display: flex; flex-direction: column; gap: 7px; margin-bottom: 16px; }

.field label { font-size: 13.5px; font-weight: 500; color: var(--ink-soft); }
.field label em { font-style: normal; color: #E5484D; margin-left: 2px; }

.field input,
.field textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line-strong);
  border-radius: 9px;
  background: #FCFEFF;
  font-size: 14.5px;
  color: var(--ink);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.field input::placeholder,
.field textarea::placeholder { color: #A9B9C8; }

.field input:focus,
.field textarea:focus {
  outline: none;
  background: #fff;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(22, 104, 227, 0.13);
}

.field textarea { resize: vertical; min-height: 118px; line-height: 1.7; }

.form-note { margin-top: 14px; font-size: 12.5px; color: var(--muted); line-height: 1.7; }

.form-msg {
  display: none;
  margin-top: 14px;
  padding: 12px 14px;
  border-radius: 9px;
  font-size: 13.5px;
  background: rgba(34, 192, 138, 0.1);
  color: #12855B;
  border: 1px solid rgba(34, 192, 138, 0.25);
}

.form-msg.is-show { display: block; }

/* Map-ish address block */
.map-card {
  position: relative;
  overflow: hidden;
  padding: 40px;
  border-radius: var(--r-lg);
  background: linear-gradient(150deg, #0A2B4D, #071726);
  color: #B9CBDD;
}

.map-card::before {
  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: 40px 40px;
  -webkit-mask-image: radial-gradient(circle at 80% 20%, #000, transparent 70%);
  mask-image: radial-gradient(circle at 80% 20%, #000, transparent 70%);
}

.map-card > * { position: relative; }

.map-card h3 { color: #fff; font-size: 18px; margin-bottom: 12px; }
.map-card p { font-size: 15px; line-height: 1.8; color: #A9C0D4; }
.map-card .pin {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  padding: 6px 12px;
  border-radius: var(--r-pill);
  background: rgba(62, 139, 255, 0.16);
  border: 1px solid rgba(62, 139, 255, 0.3);
  font-size: 12.5px;
  color: #9CC6FF;
}

.map-card--wide {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  padding: 46px 48px;
}

.map-ways { display: grid; gap: 20px; }

.way { display: flex; gap: 14px; align-items: flex-start; }

.way-ico {
  width: 38px;
  height: 38px;
  flex: none;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: rgba(62, 139, 255, 0.14);
  border: 1px solid rgba(62, 139, 255, 0.22);
  color: #7FB6FF;
}

.way-ico svg { width: 18px; height: 18px; }

.way b {
  display: block;
  font-size: 14.5px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 3px;
}

.way > div > span { display: block; font-size: 13.5px; line-height: 1.65; color: #A9C0D4; }

/* ---------- 15. Footer ---------- */
.site-footer {
  background: #061320;
  color: #8FA6BA;
  padding: 68px 0 0;
  font-size: 14px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.3fr;
  gap: 44px;
  padding-bottom: 52px;
}

.footer-brand .brand-text strong { color: #fff; }
.footer-brand .brand-text em { color: #5E7488; }

.footer-about { margin-top: 18px; font-size: 13.5px; line-height: 1.85; color: #7E93A6; max-width: 300px; }

.footer-col h4 {
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  letter-spacing: 0.08em;
  margin-bottom: 18px;
}

.footer-col ul { display: grid; gap: 11px; }
.footer-col a { font-size: 13.5px; color: #8FA6BA; transition: color 0.2s ease; }
.footer-col a:hover { color: #6FB0FF; }

.footer-col address { font-style: normal; font-size: 13.5px; line-height: 1.85; color: #8FA6BA; }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 22px 0 26px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 12.5px;
  color: #6B8195;
}

.footer-bottom a { color: #6B8195; transition: color 0.2s ease; }
.footer-bottom a:hover { color: #6FB0FF; }

.filing { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }

.filing a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #8FA6BA;
}

.filing a:hover { color: #6FB0FF; }

.filing svg { width: 13px; height: 13px; opacity: 0.8; }

/* ---------- 16. Reveal ---------- */
.js .reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.75s cubic-bezier(0.2, 0.7, 0.3, 1),
    transform 0.75s cubic-bezier(0.2, 0.7, 0.3, 1);
}

.js .reveal.is-in { opacity: 1; transform: none; }

.js .reveal[data-d="1"] { transition-delay: 0.08s; }
.js .reveal[data-d="2"] { transition-delay: 0.16s; }
.js .reveal[data-d="3"] { transition-delay: 0.24s; }
.js .reveal[data-d="4"] { transition-delay: 0.32s; }

/* ---------- 17. Responsive ---------- */
@media (max-width: 1080px) {
  .hero-inner { gap: 44px; }
  .split { gap: 48px; }
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
  .footer-col--contact { grid-column: 1 / -1; }
}

@media (max-width: 960px) {
  .section { padding: 76px 0; }

  .nav-toggle { display: flex; }

  .nav {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 14px 20px 22px;
    background: #fff;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 24px 40px -28px rgba(11, 31, 51, 0.5);
    transform: translateY(-10px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
  }

  .nav.is-open { opacity: 1; transform: none; visibility: visible; }

  .nav > a { padding: 13px 12px; font-size: 15.5px; border-radius: 9px; }
  .nav > a.is-active::after { display: none; }
  .nav > a.is-active { background: rgba(22, 104, 227, 0.07); }
  .nav-cta { margin: 10px 0 0; justify-content: center; }

  .hero { padding: calc(var(--nav-h) + 60px) 0 70px; }
  .hero-inner { grid-template-columns: 1fr; gap: 56px; }
  .hero-sub { max-width: 100%; }
  .hero-visual { max-width: 520px; }
  .hv-main { transform: none; }
  .hero-visual:hover .hv-main { transform: none; }
  .hv-chip--a { right: -8px; }
  .hv-chip--b { left: -8px; }

  .split { grid-template-columns: 1fr; gap: 40px; }
  .split--rev .split-media { order: 0; }

  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }

  .contact-grid { grid-template-columns: 1fr; gap: 32px; }

  .map-card--wide { grid-template-columns: 1fr; gap: 30px; padding: 36px 28px; }

  .cta-inner { flex-direction: column; align-items: flex-start; }

  .footer-grid { grid-template-columns: 1fr 1fr; gap: 34px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-about { max-width: 100%; }
}

@media (max-width: 640px) {
  .container { padding: 0 18px; }
  .section { padding: 60px 0; }
  .section-head { margin-bottom: 38px; }

  .hero { padding: calc(var(--nav-h) + 44px) 0 58px; }
  .hero h1 { font-size: clamp(28px, 8vw, 36px); }
  .hero-sub { font-size: 15.5px; }
  .hero-actions { width: 100%; }
  .hero-actions .btn { flex: 1 1 0; }

  .hero-meta {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px 20px;
    margin-top: 36px;
  }

  .hero-meta b { font-size: 18px; }

  .hv-main { padding: 18px 18px 20px; }
  .hv-dots, .hv-foot { display: none; }
  .hv-chip { padding: 10px 13px; }
  .hv-chip--a { top: -14px; right: 0; }
  .hv-chip--b { bottom: -6px; left: 0; }
  .hv-chip small { display: none; }
  .hero-visual { padding: 12px 0 28px; }

  .grid-2, .grid-3, .grid-4, .steps { grid-template-columns: 1fr; }
  .card { padding: 26px 22px; }

  .stat-panel div { padding: 24px 20px; }
  .stat-panel b { font-size: 25px; }

  .info-table th, .info-table td { padding: 12px 14px; }
  .info-table th { width: 108px; font-size: 13px; white-space: normal; }

  /* 键值表在窄屏改为标签 / 值上下堆叠 */
  .info-table--kv,
  .info-table--kv tbody,
  .info-table--kv tr,
  .info-table--kv th,
  .info-table--kv td {
    display: block;
    width: auto;
  }

  .info-table--kv tr {
    padding: 14px 0;
    border-bottom: 1px solid var(--line);
  }

  .info-table--kv tr:last-child { border-bottom: 0; }

  .info-table--kv th {
    padding: 0 16px 3px;
    background: transparent;
    border-bottom: 0;
    font-size: 12.5px;
    font-weight: 600;
    color: var(--muted);
    letter-spacing: 0.02em;
  }

  .info-table--kv td {
    padding: 0 16px 10px;
    border-bottom: 0;
    font-size: 14px;
  }

  .info-table--kv td:last-child { padding-bottom: 0; }

  .form-card { padding: 24px 20px; }
  .form-row { grid-template-columns: 1fr; gap: 0; }

  .map-card { padding: 28px 22px; }

  .footer-grid { grid-template-columns: 1fr; gap: 30px; padding-bottom: 38px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 10px; }

  .cta-actions { width: 100%; }
  .cta-actions .btn { flex: 1 1 auto; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms;
    animation-iteration-count: 1;
    transition-duration: 0.001ms;
  }
  .js .reveal { opacity: 1; transform: none; }
}