/* ============================================================
   模灵智能 · 企业官网
   Design Tokens
   ============================================================ */
:root {
  /* Brand — 科技蓝 */
  --navy-950: #050B18;
  --navy-900: #0A1526;
  --navy-800: #101F35;
  --navy-700: #17304F;
  --blue-700: #0B4FA6;
  --blue-600: #1668DC;
  --blue-500: #2E7CF6;
  --cyan-400: #22D3EE;
  --cyan-300: #67E8F9;

  /* Ink */
  --ink-900: #0B1220;
  --ink-800: #1E293B;
  --ink-700: #334155;
  --ink-500: #64748B;
  --ink-400: #8494AC;
  --ink-300: #A9B6C9;

  /* Surface */
  --bg: #FFFFFF;
  --bg-soft: #F5F8FD;
  --bg-mute: #EEF3FA;
  --line: #E4EAF3;
  --line-strong: #D3DEEE;

  /* Shape & depth */
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 22px;
  --radius-xl: 28px;
  --shadow-xs: 0 1px 2px rgba(11, 18, 32, .04);
  --shadow-sm: 0 1px 2px rgba(11, 18, 32, .04), 0 6px 16px rgba(11, 18, 32, .05);
  --shadow-md: 0 10px 34px rgba(11, 18, 32, .08);
  --shadow-lg: 0 26px 64px rgba(11, 18, 32, .12);
  --shadow-glow: 0 18px 50px rgba(22, 104, 220, .28);

  /* Metrics */
  --container: 1200px;
  --gutter: 24px;
  --header-h: 72px;

  --ease: cubic-bezier(.22, .61, .36, 1);
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

/* ============================================================
   Reset & Base
   ============================================================ */
*,
*::before,
*::after { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink-700);
  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-900);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -.02em;
}

p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }

a {
  color: inherit;
  text-decoration: none;
  transition: color .2s var(--ease), opacity .2s var(--ease);
}

img, svg { display: block; max-width: 100%; }
button, input, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; border: none; background: none; }

::selection {
  background: rgba(22, 104, 220, .16);
  color: var(--ink-900);
}

:focus-visible {
  outline: 2px solid var(--blue-600);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ============================================================
   Layout primitives
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: 104px; }
.section--soft { background: var(--bg-soft); }
.section--tight { padding-block: 72px; }

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

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  padding: 6px 14px 6px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: var(--blue-600);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .02em;
}
.eyebrow .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan-400);
  box-shadow: 0 0 0 4px rgba(34, 211, 238, .18);
}

.section-title {
  font-size: clamp(28px, 3.4vw, 42px);
}
.section-desc {
  margin-top: 18px;
  font-size: 17px;
  color: var(--ink-500);
}

.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-strong) 20%, var(--line-strong) 80%, transparent);
}

/* ============================================================
   Buttons
   ============================================================ */
.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: .01em;
  white-space: nowrap;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease),
    background-color .25s var(--ease), border-color .25s var(--ease), color .25s var(--ease);
}
.btn svg { width: 17px; height: 17px; }

.btn--primary {
  background: linear-gradient(135deg, var(--blue-600), var(--blue-500));
  color: #fff;
  box-shadow: var(--shadow-glow);
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 22px 54px rgba(22, 104, 220, .38);
}

.btn--ghost {
  border: 1px solid var(--line-strong);
  background: #fff;
  color: var(--ink-800);
}
.btn--ghost:hover {
  border-color: var(--blue-500);
  color: var(--blue-600);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.btn--light {
  border: 1px solid rgba(255, 255, 255, .22);
  background: rgba(255, 255, 255, .06);
  color: #fff;
  backdrop-filter: blur(8px);
}
.btn--light:hover {
  background: rgba(255, 255, 255, .14);
  border-color: rgba(255, 255, 255, .4);
  transform: translateY(-2px);
}

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

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--blue-600);
  font-size: 15px;
  font-weight: 600;
}
.link-arrow svg {
  width: 16px;
  height: 16px;
  transition: transform .25s var(--ease);
}
.link-arrow:hover svg { transform: translateX(4px); }

/* ============================================================
   Header
   ============================================================ */
.header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--header-h);
  transition: background-color .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
  border-bottom: 1px solid transparent;
}
.header.is-solid {
  background: rgba(255, 255, 255, .82);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom-color: var(--line);
  box-shadow: 0 1px 20px rgba(11, 18, 32, .04);
}
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  height: 100%;
}

/* Logo */
.logo {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  flex-shrink: 0;
}
.logo__mark {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}
.logo__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}
.logo__cn {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--ink-900);
}
.logo__en {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ink-400);
}

/* Nav */
.nav { display: flex; align-items: center; gap: 6px; }
.nav__link {
  position: relative;
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
  color: var(--ink-700);
  transition: color .2s var(--ease), background-color .2s var(--ease);
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: var(--blue-600);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .28s var(--ease);
}
.nav__link:hover { color: var(--blue-600); }
.nav__link.is-active { color: var(--blue-600); font-weight: 600; }
.nav__link.is-active::after { transform: scaleX(1); }

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

.header__phone {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-800);
}
.header__phone svg { width: 15px; height: 15px; color: var(--blue-600); }

/* Header on dark hero (transparent state) */
.header.is-transparent:not(.is-solid) .logo__cn { color: #fff; }
.header.is-transparent:not(.is-solid) .logo__en { color: rgba(255, 255, 255, .55); }
.header.is-transparent:not(.is-solid) .nav__link { color: rgba(255, 255, 255, .78); }
.header.is-transparent:not(.is-solid) .nav__link:hover { color: #fff; }
.header.is-transparent:not(.is-solid) .nav__link.is-active { color: #fff; }
.header.is-transparent:not(.is-solid) .nav__link.is-active::after { background: var(--cyan-400); }
.header.is-transparent:not(.is-solid) .header__phone { color: rgba(255, 255, 255, .9); }
.header.is-transparent:not(.is-solid) .header__phone svg { color: var(--cyan-400); }
.header.is-transparent:not(.is-solid) .btn--primary {
  background: #fff;
  color: var(--blue-600);
  box-shadow: 0 12px 30px rgba(0, 0, 0, .28);
}

/* Burger */
.burger {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #fff;
  align-items: center;
  justify-content: center;
}
.burger span {
  display: block;
  position: relative;
  width: 18px;
  height: 1.5px;
  background: var(--ink-800);
  transition: transform .3s var(--ease), opacity .2s var(--ease);
}
.burger span::before,
.burger span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 1.5px;
  background: var(--ink-800);
  transition: transform .3s var(--ease);
}
.burger span::before { top: -6px; }
.burger span::after { top: 6px; }
.burger.is-open span { background: transparent; }
.burger.is-open span::before { transform: translateY(6px) rotate(45deg); }
.burger.is-open span::after { transform: translateY(-6px) rotate(-45deg); }

/* Mobile drawer */
.drawer {
  position: fixed;
  inset: var(--header-h) 0 auto 0;
  z-index: 99;
  padding: 16px var(--gutter) 28px;
  background: rgba(255, 255, 255, .97);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
  box-shadow: var(--shadow-md);
  transform: translateY(-14px);
  opacity: 0;
  visibility: hidden;
  transition: opacity .25s var(--ease), transform .25s var(--ease), visibility .25s;
}
.drawer.is-open { opacity: 1; visibility: visible; transform: translateY(0); }
.drawer a {
  display: block;
  padding: 14px 4px;
  border-bottom: 1px solid var(--line);
  font-size: 16px;
  font-weight: 600;
  color: var(--ink-800);
}
.drawer a.is-active { color: var(--blue-600); }
.drawer .btn { width: 100%; margin-top: 20px; }

/* ============================================================
   Hero
   ============================================================ */
.hero {
  position: relative;
  padding-top: calc(var(--header-h) + 88px);
  padding-bottom: 120px;
  background: var(--navy-900);
  overflow: hidden;
  isolation: isolate;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(760px 480px at 12% 8%, rgba(22, 104, 220, .42), transparent 62%),
    radial-gradient(680px 520px at 88% 22%, rgba(34, 211, 238, .18), transparent 60%),
    linear-gradient(160deg, var(--navy-950) 0%, var(--navy-900) 45%, #0C2038 100%);
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(1100px 720px at 50% 0%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(1100px 720px at 50% 0%, #000 20%, transparent 78%);
}

.hero__inner {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 64px;
  align-items: center;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 26px;
  padding: 7px 16px 7px 8px;
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: 999px;
  background: rgba(255, 255, 255, .05);
  color: rgba(255, 255, 255, .84);
  font-size: 13px;
  letter-spacing: .01em;
}
.hero__badge .tag {
  padding: 2px 9px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--cyan-400), var(--blue-500));
  color: #04121F;
  font-size: 11px;
  font-weight: 700;
}

.hero__title {
  font-size: clamp(34px, 4.6vw, 58px);
  line-height: 1.16;
  color: #fff;
  letter-spacing: -.03em;
}
.hero__title .grad {
  background: linear-gradient(100deg, var(--cyan-300) 0%, #7CB6FF 52%, var(--cyan-300) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero__desc {
  margin-top: 24px;
  max-width: 540px;
  font-size: 17px;
  line-height: 1.8;
  color: rgba(255, 255, 255, .68);
}

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

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
  margin-top: 44px;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, .1);
}
.hero__meta li {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 14px;
  color: rgba(255, 255, 255, .62);
}
.hero__meta svg {
  width: 16px;
  height: 16px;
  color: var(--cyan-400);
  flex-shrink: 0;
}

/* Hero visual: floating console panel */
.hero__visual { position: relative; }

.panel {
  position: relative;
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: var(--radius-lg);
  background: linear-gradient(155deg, rgba(255, 255, 255, .1), rgba(255, 255, 255, .03));
  backdrop-filter: blur(14px);
  box-shadow: 0 40px 90px rgba(0, 0, 0, .45);
  overflow: hidden;
  animation: float 7s ease-in-out infinite;
}
.panel__bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 18px;
  border-bottom: 1px solid rgba(255, 255, 255, .09);
  background: rgba(255, 255, 255, .03);
}
.panel__bar i {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .22);
}
.panel__bar i:first-child { background: #FF6B6B; }
.panel__bar i:nth-child(2) { background: #FFD166; }
.panel__bar i:nth-child(3) { background: #4ADE80; }
.panel__bar span {
  margin-left: 8px;
  font-size: 12px;
  color: rgba(255, 255, 255, .5);
  letter-spacing: .04em;
}

.panel__body { padding: 22px; }
.panel__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 13px 15px;
  margin-bottom: 10px;
  border: 1px solid rgba(255, 255, 255, .07);
  border-radius: 12px;
  background: rgba(255, 255, 255, .035);
}
.panel__row:last-child { margin-bottom: 0; }
.panel__row-l { display: flex; align-items: center; gap: 12px; min-width: 0; }
.panel__ico {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  border-radius: 9px;
  background: linear-gradient(135deg, rgba(46, 124, 246, .9), rgba(34, 211, 238, .75));
}
.panel__ico svg { width: 16px; height: 16px; color: #fff; }
.panel__label {
  font-size: 13.5px;
  font-weight: 600;
  color: rgba(255, 255, 255, .9);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.panel__sub { font-size: 11.5px; color: rgba(255, 255, 255, .42); }
.panel__pct { font-size: 13px; font-weight: 700; color: var(--cyan-300); }

.panel__chart {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  height: 88px;
  margin-top: 18px;
  padding: 16px 15px 12px;
  border: 1px solid rgba(255, 255, 255, .07);
  border-radius: 12px;
  background: rgba(255, 255, 255, .03);
}
.panel__chart i {
  flex: 1;
  border-radius: 3px 3px 0 0;
  background: linear-gradient(180deg, var(--cyan-400), rgba(46, 124, 246, .35));
  animation: growbar 2.6s var(--ease) infinite;
}
.panel__chart i:nth-child(1) { height: 34%; animation-delay: 0s; }
.panel__chart i:nth-child(2) { height: 52%; animation-delay: .12s; }
.panel__chart i:nth-child(3) { height: 41%; animation-delay: .24s; }
.panel__chart i:nth-child(4) { height: 68%; animation-delay: .36s; }
.panel__chart i:nth-child(5) { height: 57%; animation-delay: .48s; }
.panel__chart i:nth-child(6) { height: 84%; animation-delay: .6s; }
.panel__chart i:nth-child(7) { height: 72%; animation-delay: .72s; }
.panel__chart i:nth-child(8) { height: 96%; animation-delay: .84s; }

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}
@keyframes growbar {
  0%, 100% { transform: scaleY(.82); transform-origin: bottom; opacity: .72; }
  50% { transform: scaleY(1); transform-origin: bottom; opacity: 1; }
}

/* Floating stat chips */
.chip {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 16px;
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: 14px;
  background: rgba(12, 24, 42, .82);
  backdrop-filter: blur(12px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, .38);
}
.chip svg { width: 18px; height: 18px; color: var(--cyan-400); }
.chip b {
  display: block;
  font-size: 16px;
  color: #fff;
  line-height: 1.2;
}
.chip small { font-size: 11.5px; color: rgba(255, 255, 255, .5); }
.chip--a { top: -22px; left: -34px; animation: float 6s ease-in-out .6s infinite; }
.chip--b { bottom: -26px; right: -26px; animation: float 6.6s ease-in-out 1.2s infinite; }

/* ============================================================
   Logo marquee
   ============================================================ */
.marquee-wrap {
  padding-block: 30px;
  border-bottom: 1px solid var(--line);
  background: #fff;
}
.marquee-wrap .label {
  text-align: center;
  margin-bottom: 22px;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-400);
}
.marquee {
  position: relative;
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.marquee__track {
  display: flex;
  width: max-content;
  gap: 72px;
  animation: scrollx 34s linear infinite;
}
.marquee:hover .marquee__track { animation-play-state: paused; }
.marquee__track span {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--ink-300);
  white-space: nowrap;
  transition: color .25s var(--ease);
}
.marquee__track span:hover { color: var(--ink-500); }
@keyframes scrollx {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ============================================================
   Stats
   ============================================================ */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: #fff;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.stat {
  padding: 38px 30px;
  border-right: 1px solid var(--line);
}
.stat:last-child { border-right: none; }
.stat__num {
  display: flex;
  align-items: baseline;
  gap: 2px;
  font-size: 42px;
  font-weight: 700;
  color: var(--ink-900);
  letter-spacing: -.03em;
  font-variant-numeric: tabular-nums;
}
.stat__num em {
  font-style: normal;
  font-size: 24px;
  color: var(--blue-600);
}
.stat__label {
  margin-top: 8px;
  font-size: 14.5px;
  color: var(--ink-500);
}
.stat__hint {
  margin-top: 4px;
  font-size: 12.5px;
  color: var(--ink-300);
}

/* ============================================================
   Cards
   ============================================================ */
.grid { display: grid; gap: 24px; }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }

.card {
  position: relative;
  padding: 34px 30px 32px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: #fff;
  transition: transform .32s var(--ease), box-shadow .32s var(--ease), border-color .32s var(--ease);
}
.card::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 3px;
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  background: linear-gradient(90deg, var(--blue-600), var(--cyan-400));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s var(--ease);
}
.card:hover {
  transform: translateY(-6px);
  border-color: transparent;
  box-shadow: var(--shadow-md);
}
.card:hover::after { transform: scaleX(1); }

.card__ico {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  margin-bottom: 22px;
  border-radius: 14px;
  background: linear-gradient(140deg, #EAF2FF, #E2F6FD);
  color: var(--blue-600);
}
.card__ico svg { width: 25px; height: 25px; }

.card__title {
  font-size: 19px;
  margin-bottom: 12px;
}
.card__desc {
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-500);
}
.card__list { margin-top: 20px; }
.card__list li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 9px;
  font-size: 14.5px;
  color: var(--ink-700);
}
.card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: linear-gradient(135deg, var(--blue-500), var(--cyan-400));
}
.card__foot { margin-top: 24px; }

/* ============================================================
   Products
   ============================================================ */
.product {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: #fff;
  transition: transform .32s var(--ease), box-shadow .32s var(--ease), border-color .32s var(--ease);
}
.product:hover {
  transform: translateY(-6px);
  border-color: transparent;
  box-shadow: var(--shadow-lg);
}
.product__visual {
  position: relative;
  height: 168px;
  display: grid;
  place-items: center;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}
.product__visual::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .5) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .5) 1px, transparent 1px);
  background-size: 26px 26px;
  opacity: .5;
}
.product__visual svg {
  position: relative;
  width: 62px;
  height: 62px;
  color: #fff;
  filter: drop-shadow(0 8px 18px rgba(0, 0, 0, .22));
  transition: transform .45s var(--ease);
}
.product:hover .product__visual svg { transform: scale(1.08) translateY(-3px); }

.v-blue { background: linear-gradient(140deg, #1668DC, #2E7CF6 55%, #22D3EE); }
.v-navy { background: linear-gradient(140deg, #0A1526, #17304F 60%, #0B4FA6); }
.v-cyan { background: linear-gradient(140deg, #0E7490, #22D3EE 65%, #67E8F9); }
.v-slate { background: linear-gradient(140deg, #334155, #64748B 60%, #94A3B8); }
.v-violet { background: linear-gradient(140deg, #1E3A8A, #4F46E5 60%, #22D3EE); }

.product__body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 26px 26px 28px;
}
.product__tag {
  align-self: flex-start;
  margin-bottom: 14px;
  padding: 4px 11px;
  border-radius: 6px;
  background: var(--bg-mute);
  color: var(--blue-600);
  font-size: 12px;
  font-weight: 600;
}
.product__name {
  font-size: 20px;
  margin-bottom: 10px;
}
.product__desc {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ink-500);
}
.product__features {
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px dashed var(--line-strong);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.product__features span {
  padding: 5px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 12.5px;
  color: var(--ink-700);
  background: #fff;
}
.product__foot { margin-top: auto; padding-top: 22px; }

/* Product detail rows (products page) */
.pdetail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  padding-block: 64px;
  border-bottom: 1px solid var(--line);
}
.pdetail:last-child { border-bottom: none; }
.pdetail--flip .pdetail__media { order: 2; }
.pdetail__num {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .2em;
  color: var(--blue-600);
  margin-bottom: 14px;
}
.pdetail__title { font-size: clamp(24px, 2.6vw, 32px); }
.pdetail__desc {
  margin-top: 16px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-500);
}
.plist { margin-top: 26px; display: grid; gap: 14px; }
.plist li {
  display: flex;
  gap: 12px;
  font-size: 15px;
  color: var(--ink-700);
}
.plist svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  margin-top: 2px;
  color: var(--blue-600);
}
.pdetail__media {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}
.pdetail__media::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .16) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .16) 1px, transparent 1px);
  background-size: 30px 30px;
}
.pdetail__media > svg {
  position: absolute;
  inset: 0;
  margin: auto;
  width: 96px;
  height: 96px;
  color: #fff;
  opacity: .95;
}
.pdetail__badge {
  position: absolute;
  left: 24px;
  bottom: 24px;
  padding: 8px 15px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .16);
  border: 1px solid rgba(255, 255, 255, .28);
  backdrop-filter: blur(10px);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
}

/* ============================================================
   Process steps
   ============================================================ */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin-top: 8px;
}
.step {
  position: relative;
  padding: 8px 22px 0 0;
}
.step::before {
  content: "";
  position: absolute;
  top: 21px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--line);
}
.step:last-child::before { display: none; }
.step__dot {
  position: relative;
  z-index: 1;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 2px solid var(--line-strong);
  background: #fff;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink-400);
  transition: all .3s var(--ease);
}
.step:hover .step__dot {
  border-color: var(--blue-600);
  background: var(--blue-600);
  color: #fff;
  box-shadow: 0 8px 20px rgba(22, 104, 220, .3);
}
.step__title {
  margin-top: 18px;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink-900);
}
.step__desc {
  margin-top: 8px;
  font-size: 14px;
  color: var(--ink-500);
  line-height: 1.7;
}

/* ============================================================
   Feature split (why us)
   ============================================================ */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}
.split__media {
  position: relative;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-xl);
  background: linear-gradient(150deg, #0A1526, #17304F 55%, var(--blue-700));
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.split__media::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .07) 1px, transparent 1px);
  background-size: 40px 40px;
}
.split__media::after {
  content: "";
  position: absolute;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  top: -90px;
  right: -110px;
  background: radial-gradient(circle, rgba(34, 211, 238, .3), transparent 68%);
}
.ring {
  position: absolute;
  inset: 0;
  margin: auto;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, .16);
}
.ring--1 { width: 240px; height: 240px; }
.ring--2 { width: 340px; height: 340px; border-color: rgba(255, 255, 255, .1); }
.ring--3 { width: 440px; height: 440px; border-color: rgba(255, 255, 255, .06); }
.orbit {
  position: absolute;
  inset: 0;
  margin: auto;
  width: 340px;
  height: 340px;
  animation: spin 22s linear infinite;
}
.orbit i {
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--cyan-400);
  box-shadow: 0 0 18px rgba(34, 211, 238, .8);
}
.orbit i:nth-child(1) { top: -6px; left: 50%; margin-left: -6px; }
.orbit i:nth-child(2) { bottom: 22px; right: 34px; background: var(--blue-500); box-shadow: 0 0 18px rgba(46, 124, 246, .8); }
.orbit i:nth-child(3) { top: 46%; left: -6px; width: 9px; height: 9px; background: #fff; box-shadow: 0 0 14px rgba(255, 255, 255, .6); }
@keyframes spin { to { transform: rotate(360deg); } }

.core {
  position: absolute;
  inset: 0;
  margin: auto;
  width: 132px;
  height: 132px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: linear-gradient(140deg, rgba(46, 124, 246, .95), rgba(34, 211, 238, .85));
  box-shadow: 0 0 60px rgba(34, 211, 238, .35);
  color: #fff;
  text-align: center;
}
.core svg { width: 42px; height: 42px; }

.split__list { margin-top: 34px; display: grid; gap: 4px; }
.split__item {
  display: flex;
  gap: 16px;
  padding: 20px 0;
  border-top: 1px solid var(--line);
}
.split__item:last-child { border-bottom: 1px solid var(--line); }
.split__item-ico {
  width: 42px;
  height: 42px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: var(--bg-mute);
  color: var(--blue-600);
}
.split__item-ico svg { width: 20px; height: 20px; }
.split__item h4 { font-size: 16.5px; margin-bottom: 6px; }
.split__item p { font-size: 14.5px; color: var(--ink-500); }

/* ============================================================
   Timeline (about)
   ============================================================ */
.timeline { position: relative; padding-left: 34px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--blue-600), var(--cyan-400) 60%, var(--line));
}
.tl-item { position: relative; padding-bottom: 40px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: "";
  position: absolute;
  left: -34px;
  top: 6px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 3px solid #fff;
  background: var(--blue-600);
  box-shadow: 0 0 0 4px rgba(22, 104, 220, .12);
}
.tl-item__year {
  font-size: 15px;
  font-weight: 700;
  color: var(--blue-600);
  letter-spacing: .04em;
}
.tl-item__title { margin-top: 6px; font-size: 18px; }
.tl-item__desc { margin-top: 8px; font-size: 15px; color: var(--ink-500); }

/* ============================================================
   Values
   ============================================================ */
.value {
  padding: 30px 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.value:hover { transform: translateY(-4px); box-shadow: var(--shadow-sm); }
.value__num {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--ink-300);
}
.value h4 { margin: 12px 0 10px; font-size: 17px; }
.value p { font-size: 14.5px; color: var(--ink-500); }

/* ============================================================
   CTA band
   ============================================================ */
.cta {
  position: relative;
  padding: 68px 64px;
  border-radius: var(--radius-xl);
  background: linear-gradient(120deg, var(--navy-900) 0%, #123A63 55%, var(--blue-700) 100%);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(520px 340px at 88% 110%, rgba(34, 211, 238, .3), transparent 62%),
    radial-gradient(420px 300px at 6% -20%, rgba(46, 124, 246, .35), transparent 60%);
}
.cta::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .05) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(700px 400px at 80% 50%, #000, transparent 75%);
  -webkit-mask-image: radial-gradient(700px 400px at 80% 50%, #000, transparent 75%);
}
.cta__inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}
.cta__title {
  font-size: clamp(24px, 2.8vw, 34px);
  color: #fff;
}
.cta__desc {
  margin-top: 14px;
  font-size: 16px;
  color: rgba(255, 255, 255, .68);
  max-width: 560px;
}
.cta__actions { display: flex; gap: 14px; flex-shrink: 0; }

/* ============================================================
   Page hero (inner pages)
   ============================================================ */
.page-hero {
  position: relative;
  padding-top: calc(var(--header-h) + 76px);
  padding-bottom: 84px;
  background: var(--navy-900);
  overflow: hidden;
  isolation: isolate;
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(700px 400px at 82% 0%, rgba(34, 211, 238, .2), transparent 62%),
    radial-gradient(620px 420px at 6% 100%, rgba(22, 104, 220, .38), transparent 62%),
    linear-gradient(150deg, var(--navy-950), var(--navy-900) 55%, #0D2440);
}
.page-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(255, 255, 255, .04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .04) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(900px 500px at 50% 0%, #000, transparent 78%);
  -webkit-mask-image: radial-gradient(900px 500px at 50% 0%, #000, transparent 78%);
}
.page-hero__inner { position: relative; max-width: 760px; }
.page-hero__title {
  font-size: clamp(30px, 4vw, 48px);
  color: #fff;
  margin-top: 16px;
}
.page-hero__desc {
  margin-top: 20px;
  font-size: 17px;
  line-height: 1.8;
  color: rgba(255, 255, 255, .66);
}
.crumbs {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 13.5px;
  color: rgba(255, 255, 255, .5);
}
.crumbs a:hover { color: #fff; }
.crumbs span { color: rgba(255, 255, 255, .3); }
.crumbs em { font-style: normal; color: rgba(255, 255, 255, .85); }

/* ============================================================
   Contact page
   ============================================================ */
.contact-grid {
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: 56px;
  align-items: start;
}

.info-card {
  display: flex;
  gap: 18px;
  padding: 24px;
  margin-bottom: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  transition: box-shadow .3s var(--ease), border-color .3s var(--ease), transform .3s var(--ease);
}
.info-card:hover {
  transform: translateY(-3px);
  border-color: transparent;
  box-shadow: var(--shadow-md);
}
.info-card__ico {
  width: 46px;
  height: 46px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  border-radius: 13px;
  background: linear-gradient(140deg, #EAF2FF, #E2F6FD);
  color: var(--blue-600);
}
.info-card__ico svg { width: 21px; height: 21px; }
.info-card__label {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-400);
  letter-spacing: .04em;
}
.info-card__value {
  margin-top: 6px;
  font-size: 17px;
  font-weight: 600;
  color: var(--ink-900);
  word-break: break-word;
}
.info-card__hint { margin-top: 4px; font-size: 13.5px; color: var(--ink-500); }

.form {
  padding: 40px;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: #fff;
  box-shadow: var(--shadow-sm);
}
.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.field { margin-bottom: 20px; }
.field label {
  display: block;
  margin-bottom: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-800);
}
.field label i { color: #E5484D; font-style: normal; margin-left: 3px; }
.field input,
.field textarea,
.field select {
  width: 100%;
  padding: 13px 15px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: #fff;
  font-size: 15px;
  color: var(--ink-900);
  transition: border-color .22s var(--ease), box-shadow .22s var(--ease);
  appearance: none;
}
.field textarea { min-height: 128px; resize: vertical; line-height: 1.7; }
.field select {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748B' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'/></svg>");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
}
.field input::placeholder,
.field textarea::placeholder { color: var(--ink-300); }
.field input:focus,
.field textarea:focus,
.field select:focus {
  outline: none;
  border-color: var(--blue-500);
  box-shadow: 0 0 0 4px rgba(46, 124, 246, .12);
}
.field.has-error input,
.field.has-error textarea,
.field.has-error select { border-color: #E5484D; }
.field__err {
  display: none;
  margin-top: 6px;
  font-size: 12.5px;
  color: #E5484D;
}
.field.has-error .field__err { display: block; }

.form__note {
  margin-top: 18px;
  font-size: 13px;
  color: var(--ink-400);
  line-height: 1.7;
}
.form__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 28px;
}

/* Toast */
.toast {
  position: fixed;
  left: 50%;
  bottom: 40px;
  z-index: 200;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 22px;
  border-radius: 999px;
  background: var(--ink-900);
  color: #fff;
  font-size: 15px;
  box-shadow: var(--shadow-lg);
  transform: translate(-50%, 24px);
  opacity: 0;
  visibility: hidden;
  transition: all .32s var(--ease);
}
.toast.is-show {
  transform: translate(-50%, 0);
  opacity: 1;
  visibility: visible;
}
.toast svg { width: 19px; height: 19px; color: #4ADE80; }

/* Map placeholder */
.map {
  position: relative;
  height: 260px;
  margin-top: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-mute);
  overflow: hidden;
}
.map::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(22, 104, 220, .1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(22, 104, 220, .1) 1px, transparent 1px);
  background-size: 32px 32px;
}
.map__pin {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: grid;
  place-items: center;
  gap: 8px;
}
.map__pin .marker {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 50% 50% 50% 4px;
  transform: rotate(-45deg);
  background: linear-gradient(135deg, var(--blue-600), var(--blue-500));
  box-shadow: 0 12px 26px rgba(22, 104, 220, .35);
}
.map__pin .marker svg { transform: rotate(45deg); width: 20px; height: 20px; color: #fff; }
.map__pin span {
  padding: 5px 12px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--line);
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-700);
  box-shadow: var(--shadow-xs);
}
.map__pulse {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 46px;
  height: 46px;
  margin: -23px 0 0 -23px;
  border-radius: 50%;
  background: rgba(22, 104, 220, .28);
  animation: pulse 2.4s ease-out infinite;
}
@keyframes pulse {
  0% { transform: scale(1); opacity: .7; }
  100% { transform: scale(3.4); opacity: 0; }
}

/* FAQ */
.faq { border-top: 1px solid var(--line); }
.faq__item { border-bottom: 1px solid var(--line); }
.faq__q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
  padding: 24px 4px;
  text-align: left;
  font-size: 17px;
  font-weight: 600;
  color: var(--ink-900);
  transition: color .2s var(--ease);
}
.faq__q:hover { color: var(--blue-600); }
.faq__q i {
  position: relative;
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}
.faq__q i::before,
.faq__q i::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  width: 16px;
  height: 2px;
  margin-top: -1px;
  border-radius: 2px;
  background: var(--blue-600);
  transition: transform .3s var(--ease);
}
.faq__q i::after { transform: rotate(90deg); }
.faq__item.is-open .faq__q i::after { transform: rotate(0); }
.faq__a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .38s var(--ease);
}
.faq__item.is-open .faq__a { max-height: 340px; }
.faq__a p {
  padding: 0 40px 26px 4px;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ink-500);
}

/* ============================================================
   Footer
   ============================================================ */
.footer {
  background: var(--navy-950);
  color: rgba(255, 255, 255, .58);
  padding-top: 76px;
}
.footer__top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.1fr;
  gap: 48px;
  padding-bottom: 52px;
}
.footer .logo__cn { color: #fff; }
.footer .logo__en { color: rgba(255, 255, 255, .4); }
.footer__about {
  margin-top: 22px;
  max-width: 320px;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(255, 255, 255, .5);
}
.footer__social { display: flex; gap: 10px; margin-top: 24px; }
.footer__social a {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: 10px;
  color: rgba(255, 255, 255, .6);
  transition: all .25s var(--ease);
}
.footer__social a:hover {
  background: var(--blue-600);
  border-color: var(--blue-600);
  color: #fff;
  transform: translateY(-3px);
}
.footer__social svg { width: 17px; height: 17px; }

.footer__title {
  margin-bottom: 20px;
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  letter-spacing: .02em;
}
.footer__links li { margin-bottom: 13px; }
.footer__links a {
  font-size: 14.5px;
  color: rgba(255, 255, 255, .55);
}
.footer__links a:hover { color: var(--cyan-300); }

.footer__contact li {
  display: flex;
  gap: 11px;
  margin-bottom: 15px;
  font-size: 14.5px;
  line-height: 1.6;
}
.footer__contact svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  margin-top: 4px;
  color: var(--cyan-400);
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-block: 24px;
  border-top: 1px solid rgba(255, 255, 255, .08);
  font-size: 13.5px;
  color: rgba(255, 255, 255, .38);
}
.footer__bottom nav { display: flex; gap: 22px; }
.footer__bottom a:hover { color: rgba(255, 255, 255, .8); }

/* Back to top */
.to-top {
  position: fixed;
  right: 26px;
  bottom: 26px;
  z-index: 90;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-md);
  color: var(--ink-700);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all .3s var(--ease);
}
.to-top.is-show { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { background: var(--blue-600); border-color: var(--blue-600); color: #fff; }
.to-top svg { width: 19px; height: 19px; }

/* ============================================================
   Reveal animations
   ============================================================ */
[data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
[data-reveal].is-in {
  opacity: 1;
  transform: none;
}
[data-reveal][data-delay="1"] { transition-delay: .09s; }
[data-reveal][data-delay="2"] { transition-delay: .18s; }
[data-reveal][data-delay="3"] { transition-delay: .27s; }
[data-reveal][data-delay="4"] { transition-delay: .36s; }
[data-reveal][data-delay="5"] { transition-delay: .45s; }

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1080px) {
  .section { padding-block: 84px; }
  .hero__inner { grid-template-columns: 1fr; gap: 56px; }
  .hero__visual { max-width: 520px; }
  .chip--a { left: 0; }
  .chip--b { right: 0; }
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); gap: 36px 0; }
  .step::before { display: none; }
  .split { grid-template-columns: 1fr; gap: 48px; }
  .split__media { max-width: 420px; margin-inline: auto; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .pdetail { grid-template-columns: 1fr; gap: 36px; }
  .pdetail--flip .pdetail__media { order: 0; }
  .footer__top { grid-template-columns: 1fr 1fr; gap: 40px; }
  .cta { padding: 52px 40px; }
  .cta__inner { flex-direction: column; align-items: flex-start; gap: 28px; }
}

@media (max-width: 860px) {
  :root { --header-h: 64px; }
  .nav, .header__phone { display: none; }
  .burger { display: flex; }
  .header__actions .btn { display: none; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(2) { border-right: none; }
  .stat:nth-child(1), .stat:nth-child(2) { border-bottom: 1px solid var(--line); }
  .grid--3, .grid--2 { grid-template-columns: 1fr; }
  .section { padding-block: 68px; }
  .section-head { margin-bottom: 40px; }
  .hero { padding-top: calc(var(--header-h) + 56px); padding-bottom: 84px; }
  .hero__meta { gap: 16px 24px; }
  .steps { grid-template-columns: 1fr; gap: 0; }
  .step { padding: 0 0 26px 0; }
  .step::before { display: none; }
  .step::after {
    content: "";
    position: absolute;
    left: 21px;
    top: 48px;
    bottom: 0;
    width: 2px;
    background: var(--line);
  }
  .step:last-child::after { display: none; }
  .form { padding: 28px 22px; }
  .form__row { grid-template-columns: 1fr; gap: 0; }
  .footer__top { grid-template-columns: 1fr; gap: 34px; }
  .footer__bottom { flex-direction: column; text-align: center; }
  .cta { padding: 40px 26px; }
  .cta__actions { flex-direction: column; width: 100%; }
  .cta__actions .btn { width: 100%; }
  .chip--a, .chip--b { display: none; }
}

@media (max-width: 520px) {
  .grid--4 { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr; }
  .stat { border-right: none; border-bottom: 1px solid var(--line); }
  .stat:last-child { border-bottom: none; }
  .hero__actions .btn { width: 100%; }
  .form__foot { flex-direction: column; align-items: stretch; }
  .form__foot .btn { width: 100%; }
  .to-top { right: 16px; bottom: 16px; }
}