:root {
  --ink: #0b2b42;
  --deep: #0b5677;
  --muted: #5b7b8d;
  --ice: #eafaff;
  --ice-2: #d5f2fa;
  --white: rgba(255,255,255,.74);
  --glass: rgba(241, 252, 255, 0.55);
  --line: rgba(120, 190, 213, 0.38);
  --blue: #168fbd;
  --cyan: #2bd6df;
  --green: #20a980;
  --red: #ee4564;
  --shadow: 0 28px 80px rgba(33, 105, 133, 0.16);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 15% 5%, rgba(255,255,255,.95), transparent 34rem),
    radial-gradient(circle at 85% 24%, rgba(81,205,224,.24), transparent 30rem),
    linear-gradient(150deg, #e7f9ff 0%, #cfeef7 44%, #f4fcff 75%, #dff5fb 100%);
  font-family: "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
  line-height: 1.72;
}

body::before {
  position: fixed;
  z-index: -1;
  inset: 0;
  content: "";
  opacity: .42;
  background:
    linear-gradient(122deg, transparent 0 22%, rgba(255,255,255,.7) 22.2% 22.5%, transparent 22.7% 68%, rgba(255,255,255,.55) 68.2% 68.5%, transparent 68.7%),
    repeating-linear-gradient(42deg, transparent 0 64px, rgba(42,144,181,.055) 65px 66px);
  mask-image: linear-gradient(#000, transparent 92%);
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.skip {
  position: fixed;
  z-index: 100;
  top: 8px;
  left: 8px;
  padding: 8px 13px;
  color: #fff;
  background: var(--ink);
  border-radius: 8px;
  transform: translateY(-160%);
}
.skip:focus { transform: translateY(0); }

.container { width: min(1210px, calc(100% - 48px)); margin-inline: auto; }

.header {
  position: sticky;
  z-index: 50;
  top: 0;
  border-bottom: 1px solid var(--line);
  background: rgba(229, 248, 253, .7);
  backdrop-filter: blur(24px) saturate(1.3);
}

.nav {
  display: grid;
  min-height: 74px;
  align-items: center;
  grid-template-columns: auto 1fr auto;
  gap: 38px;
}

.brand { display: inline-flex; align-items: center; gap: 10px; font-size: 17px; font-weight: 900; }
.brand-ice {
  position: relative;
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  color: #fff;
  background: linear-gradient(145deg, rgba(255,255,255,.95), rgba(31,153,191,.75));
  border: 1px solid rgba(255,255,255,.9);
  clip-path: polygon(50% 0, 93% 24%, 100% 70%, 69% 100%, 26% 91%, 0 56%, 15% 16%);
  filter: drop-shadow(0 9px 14px rgba(23,112,145,.22));
}
.brand-ice::after { content: "↗"; text-shadow: 0 1px 2px rgba(0,0,0,.15); }

.navlinks { display: flex; align-items: center; justify-content: center; gap: 28px; color: #476f82; font-size: 13px; font-weight: 700; }
.navlinks a:hover, .navlinks a[aria-current="page"] { color: var(--blue); }
.nav-actions { display: flex; align-items: center; gap: 12px; }
.language { color: #668797; font-size: 11px; }

.button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 18px;
  color: var(--ink);
  background: rgba(255,255,255,.6);
  border: 1px solid rgba(107,178,203,.4);
  border-radius: 12px;
  font-size: 13px;
  font-weight: 900;
  line-height: 1.2;
  backdrop-filter: blur(15px);
  transition: .2s ease;
}
.button:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.button-main { color: #fff; background: linear-gradient(135deg, var(--blue), #22b9c8); border-color: transparent; box-shadow: 0 12px 28px rgba(22,143,189,.24); }
.button-deep { color: #fff; background: var(--ink); border-color: var(--ink); }

.menu {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  color: var(--ink);
  background: rgba(255,255,255,.65);
  border: 1px solid var(--line);
  border-radius: 12px;
  font-size: 19px;
}

.hero { position: relative; min-height: 760px; padding: 70px 0 46px; overflow: hidden; }
.hero-grid {
  display: grid;
  min-height: 610px;
  align-items: stretch;
  grid-template-columns: 150px 1fr 360px;
  gap: 22px;
}

.stat-rail {
  display: grid;
  overflow: hidden;
  background: var(--glass);
  border: 1px solid rgba(255,255,255,.8);
  border-radius: 30px 10px 30px 10px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(22px);
}
.rail-item { display: flex; padding: 18px 15px; border-bottom: 1px solid var(--line); flex-direction: column; justify-content: center; }
.rail-item:last-child { border-bottom: 0; }
.rail-item strong { color: var(--blue); font-size: 25px; letter-spacing: -.04em; }
.rail-item span { color: var(--muted); font-size: 10px; }

.hero-main {
  position: relative;
  display: flex;
  padding: 55px;
  overflow: hidden;
  background: rgba(255,255,255,.45);
  border: 1px solid rgba(255,255,255,.9);
  border-radius: 58px 15px 58px 15px;
  box-shadow: var(--shadow);
  flex-direction: column;
  justify-content: center;
  backdrop-filter: blur(22px);
}
.hero-main::after {
  position: absolute;
  width: 360px;
  height: 360px;
  right: -170px;
  bottom: -170px;
  content: "";
  background: rgba(255,255,255,.25);
  border: 1px solid rgba(255,255,255,.65);
  transform: rotate(45deg);
}

.eyebrow {
  display: inline-flex;
  width: fit-content;
  align-items: center;
  gap: 9px;
  margin-bottom: 18px;
  color: var(--blue);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.eyebrow::before { width: 28px; height: 2px; content: ""; background: var(--cyan); }

.hero h1, .inner-hero h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(46px, 6.3vw, 80px);
  line-height: 1.05;
  letter-spacing: -.065em;
}
.hero h1 span { color: var(--blue); }
.hero-copy { max-width: 650px; margin: 23px 0 0; color: var(--muted); font-size: 16px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 11px; margin-top: 29px; }

.hero-glass {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(165deg, rgba(255,255,255,.78), rgba(188,232,244,.36)),
    url("2.jpg") center / cover;
  border: 1px solid rgba(255,255,255,.95);
  border-radius: 16px 60px 16px 60px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}
.hero-glass::after { position: absolute; inset: 0; content: ""; background: linear-gradient(180deg, transparent, rgba(15,80,105,.25)); }
.glass-product { position: absolute; z-index: 2; width: 88%; max-height: 420px; top: 50%; left: 50%; object-fit: contain; filter: drop-shadow(0 26px 30px rgba(25,92,118,.2)); transform: translate(-50%,-50%); }

.floating-proof {
  position: absolute;
  z-index: 4;
  right: 18px;
  left: 18px;
  bottom: 18px;
  display: grid;
  gap: 7px;
}
.proof {
  padding: 9px 11px;
  color: #2d6175;
  background: rgba(255,255,255,.68);
  border: 1px solid rgba(255,255,255,.9);
  border-radius: 9px;
  font-size: 10px;
  font-weight: 900;
  backdrop-filter: blur(14px);
}
.data-note { margin: 10px 0 0; color: #7894a1; font-size: 10px; text-align: left; }

.section { padding: 92px 0; }
.section-frost { background: rgba(255,255,255,.38); border-block: 1px solid rgba(255,255,255,.72); backdrop-filter: blur(12px); }
.section-deep { color: #eefdff; background: linear-gradient(150deg, #0a3c56, #0b6682); }

.section-head { display: flex; align-items: end; justify-content: space-between; gap: 50px; margin-bottom: 42px; }
.section-head.center { display: block; max-width: 770px; margin-inline: auto; text-align: center; }
.section-head h2 { max-width: 750px; margin: 0; font-size: clamp(32px, 4.5vw, 52px); line-height: 1.13; letter-spacing: -.045em; }
.section-head p { max-width: 450px; margin: 0; color: var(--muted); }
.section-head.center p { margin: 14px auto 0; }
.section-deep .section-head p { color: #a9d3df; }
.section-deep .eyebrow { color: #7ce7ef; }

.feature-tabs {
  display: grid;
  min-height: 520px;
  overflow: hidden;
  background: var(--glass);
  border: 1px solid rgba(255,255,255,.85);
  border-radius: 18px 56px 18px 56px;
  box-shadow: var(--shadow);
  grid-template-columns: 290px 1fr;
  backdrop-filter: blur(20px);
}
.tab-list { display: grid; background: rgba(222,245,251,.58); border-right: 1px solid var(--line); }
.tab-label { display: flex; padding: 28px; border-bottom: 1px solid var(--line); flex-direction: column; justify-content: center; }
.tab-label:last-child { border-bottom: 0; }
.tab-label b { color: var(--blue); font-family: Consolas, monospace; font-size: 11px; }
.tab-label strong { margin-top: 8px; font-size: 19px; }
.tab-display { position: relative; display: grid; align-content: center; padding: 55px; overflow: hidden; }
.tab-display::after {
  position: absolute;
  width: 420px;
  height: 420px;
  right: -210px;
  bottom: -220px;
  content: "";
  background: rgba(255,255,255,.35);
  border: 1px solid rgba(255,255,255,.9);
  clip-path: polygon(50% 0, 100% 40%, 82% 100%, 20% 88%, 0 30%);
}
.tab-display h3 { margin: 0 0 12px; font-size: 38px; }
.tab-display p { position: relative; z-index: 2; max-width: 680px; color: var(--muted); }
.tab-points { position: relative; z-index: 2; display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
.tab-points span { padding: 7px 11px; color: #306b81; background: rgba(255,255,255,.55); border: 1px solid var(--line); border-radius: 9px; font-size: 11px; font-weight: 800; }

.node-compass { position: relative; width: min(780px, 100%); height: 620px; margin: 0 auto; }
.compass-core {
  position: absolute;
  width: 400px;
  height: 400px;
  top: 110px;
  left: 50%;
  padding: 14px;
  background: rgba(255,255,255,.16);
  border: 1px solid rgba(255,255,255,.5);
  border-radius: 50%;
  box-shadow: 0 0 0 48px rgba(255,255,255,.04), 0 0 0 96px rgba(255,255,255,.03);
  transform: translateX(-50%);
}
.compass-core img { width: 100%; height: 100%; object-fit: cover; border-radius: 50%; filter: saturate(.75) contrast(1.05); }
.city-pin {
  position: absolute;
  min-width: 145px;
  padding: 12px 14px;
  color: #dffaff;
  background: rgba(7,62,84,.55);
  border: 1px solid rgba(167,230,241,.35);
  border-radius: 12px;
  font-size: 11px;
  backdrop-filter: blur(12px);
}
.city-pin strong { display: block; color: #fff; font-size: 14px; }
.city-pin span { color: #81e2e9; }
.pin-1 { top: 10px; left: 50%; transform: translateX(-50%); }
.pin-2 { top: 170px; right: 0; }
.pin-3 { right: 65px; bottom: 15px; }
.pin-4 { bottom: 15px; left: 65px; }
.pin-5 { top: 170px; left: 0; }

.review-mosaic { display: grid; grid-template-columns: 1.15fr .85fr; grid-template-rows: repeat(2, 1fr); gap: 18px; }
.review {
  padding: 30px;
  background: var(--glass);
  border: 1px solid rgba(255,255,255,.85);
  border-radius: 40px 12px 40px 12px;
  box-shadow: 0 16px 45px rgba(34,103,129,.1);
  backdrop-filter: blur(18px);
}
.review-main { display: flex; grid-row: 1/3; flex-direction: column; justify-content: center; }
.review:nth-child(3) { border-radius: 12px 40px 12px 40px; }
.stars { color: #d69725; letter-spacing: 3px; }
.review blockquote { margin: 18px 0; color: #45697a; font-size: 15px; }
.review-main blockquote { font-size: 21px; }
.review-user { color: #7892a0; font-size: 11px; }
.review-user strong { display: block; color: var(--ink); }

.pricing-steps { display: grid; align-items: end; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.price-step {
  display: flex;
  min-height: 340px;
  padding: 30px;
  background: rgba(255,255,255,.72);
  border: 1px solid rgba(255,255,255,.9);
  border-radius: 32px 12px 32px 12px;
  box-shadow: var(--shadow);
  flex-direction: column;
}
.price-step:nth-child(2) { min-height: 410px; color: #fff; background: linear-gradient(155deg, #0c5472, #148bad); }
.price-step:nth-child(3) { min-height: 375px; }
.price-step h3 { margin: 0; }
.price { margin-top: 20px; font-size: 34px; font-weight: 900; }
.price small { color: var(--muted); font-size: 11px; font-weight: 500; }
.price-step:nth-child(2) .price small, .price-step:nth-child(2) li { color: #b9e5ee; }
.price-step ul { margin: 22px 0 27px; padding: 0; color: var(--muted); list-style: none; font-size: 13px; }
.price-step li { padding: 6px 0; }
.price-step li::before { margin-right: 7px; color: var(--green); content: "◆"; font-size: 8px; }
.price-step .button { width: 100%; margin-top: auto; }

.faq-path { position: relative; display: grid; max-width: 920px; margin: 0 auto; gap: 30px; }
.faq-path::before { position: absolute; width: 2px; top: 30px; bottom: 30px; left: 50%; content: ""; background: linear-gradient(var(--cyan), var(--blue)); }
.faq-step { position: relative; width: calc(50% - 35px); padding: 27px; background: var(--glass); border: 1px solid rgba(255,255,255,.9); border-radius: 28px 10px 28px 10px; box-shadow: var(--shadow); backdrop-filter: blur(17px); }
.faq-step:nth-child(even) { margin-left: calc(50% + 35px); border-radius: 10px 28px 10px 28px; }
.faq-step::after { position: absolute; width: 14px; height: 14px; top: 30px; right: -43px; content: ""; background: #fff; border: 4px solid var(--blue); border-radius: 50%; }
.faq-step:nth-child(even)::after { right: auto; left: -43px; }
.faq-step h3 { margin: 13px 0 8px; }
.faq-step span { color: var(--blue); font-family: Consolas, monospace; font-size: 10px; }
.faq-step p, .faq-step li { color: var(--muted); font-size: 13px; }

.inner-hero { padding: 74px 0 50px; }
.inner-hero-layout { display: grid; align-items: center; min-height: 500px; padding: 52px; background: var(--glass); border: 1px solid rgba(255,255,255,.9); border-radius: 20px 70px 20px 70px; box-shadow: var(--shadow); grid-template-columns: 1fr .82fr; gap: 55px; backdrop-filter: blur(22px); }
.inner-hero h1 { font-size: clamp(42px, 5.7vw, 68px); }
.inner-hero p { color: var(--muted); }
.inner-art { height: 390px; padding: 15px; background: rgba(255,255,255,.35); border: 1px solid rgba(255,255,255,.85); clip-path: polygon(50% 0, 92% 16%, 100% 67%, 76% 100%, 23% 93%, 0 54%, 12% 14%); }
.inner-art img { width: 100%; height: 100%; object-fit: contain; filter: drop-shadow(0 24px 30px rgba(29,105,133,.2)); }

.platform-gallery { display: grid; gap: 24px; }
.platform {
  display: grid;
  min-height: 260px;
  align-items: center;
  padding: 34px;
  background: var(--glass);
  border: 1px solid rgba(255,255,255,.9);
  border-radius: 60px 15px 60px 15px;
  box-shadow: var(--shadow);
  grid-template-columns: 110px 1fr 220px;
  gap: 30px;
  backdrop-filter: blur(18px);
}
.platform:nth-child(even) { border-radius: 15px 60px 15px 60px; }
.platform-icon { display: grid; width: 88px; height: 88px; place-items: center; color: var(--blue); background: rgba(255,255,255,.62); border: 1px solid #fff; clip-path: polygon(50% 0, 90% 20%, 100% 70%, 66% 100%, 20% 91%, 0 48%, 17% 12%); font-size: 25px; font-weight: 900; }
.platform h3 { margin: 0; font-size: 25px; }
.platform p { margin: 8px 0 0; color: var(--muted); font-size: 13px; }
.platform .button { width: 100%; }

.install-ice { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.ice-step { min-height: 220px; padding: 27px; background: rgba(255,255,255,.5); border: 1px solid rgba(255,255,255,.85); clip-path: polygon(0 0, 92% 0, 100% 15%, 100% 100%, 9% 100%, 0 85%); backdrop-filter: blur(16px); }
.ice-step b { color: var(--blue); font-family: Consolas, monospace; font-size: 10px; }
.ice-step h3 { margin: 42px 0 8px; }
.ice-step p { color: var(--muted); font-size: 13px; }

.decision-tree { display: grid; max-width: 950px; margin: 0 auto; gap: 20px; }
.decision-root { width: 55%; margin: 0 auto; padding: 25px; color: #fff; background: var(--deep); border-radius: 14px 38px 14px 38px; text-align: center; }
.decision-branches { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.decision { padding: 28px; background: var(--glass); border: 1px solid rgba(255,255,255,.9); border-radius: 35px 12px 35px 12px; box-shadow: var(--shadow); }
.decision:nth-child(even) { border-radius: 12px 35px 12px 35px; }
.decision h3 { margin: 18px 0 8px; }
.decision p, .decision li { color: var(--muted); }

.article { max-width: 850px; margin-inline: auto; }
.article h2 { margin: 46px 0 12px; font-size: 29px; }
.article h3 { margin: 27px 0 8px; }
.article p, .article li { color: var(--muted); }
.notice { margin: 27px 0; padding: 21px; background: rgba(255,255,255,.62); border: 1px solid rgba(255,255,255,.9); border-radius: 10px 30px 10px 30px; }

.cta { display: flex; align-items: center; justify-content: space-between; gap: 30px; padding: 40px 44px; color: #fff; background: linear-gradient(135deg, #0d5370, #168fb0); border: 1px solid rgba(255,255,255,.4); border-radius: 50px 14px 50px 14px; box-shadow: var(--shadow); }
.cta h2 { margin: 0; }
.cta p { margin: 5px 0 0; color: #bae1e9; }

.footer { margin-top: 88px; padding: 56px 0 22px; color: #688797; background: rgba(208,236,244,.7); border-top: 1px solid var(--line); }
.footer-grid { display: grid; grid-template-columns: 1.5fr repeat(3,1fr); gap: 42px; }
.footer p { max-width: 350px; font-size: 12px; }
.footer h3 { margin: 0 0 14px; color: var(--ink); font-size: 13px; }
.footer-links { display: grid; gap: 8px; font-size: 12px; }
.footer-links a:hover { color: var(--blue); }
.copyright { display: flex; justify-content: space-between; gap: 20px; margin-top: 40px; padding-top: 18px; border-top: 1px solid var(--line); font-size: 11px; }

@media (max-width: 980px) {
  .menu { display: block; }
  .navlinks { position: absolute; top: 74px; right: 24px; left: 24px; display: none; padding: 16px; background: rgba(235,250,254,.95); border: 1px solid var(--line); border-radius: 24px; box-shadow: var(--shadow); flex-direction: column; align-items: stretch; gap: 8px; }
  .navlinks.open { display: flex; }
  .navlinks a { padding: 8px; }
  .language, .nav-actions > .button { display: none; }
  .hero-grid { grid-template-columns: 120px 1fr; }
  .hero-glass { min-height: 430px; grid-column: 1 / -1; }
  .feature-tabs { grid-template-columns: 240px 1fr; }
  .node-compass { transform: scale(.9); transform-origin: center top; }
  .pricing-steps { grid-template-columns: 1fr; align-items: stretch; }
  .price-step, .price-step:nth-child(2), .price-step:nth-child(3) { min-height: 330px; }
  .inner-hero-layout { grid-template-columns: 1fr; }
  .install-ice { grid-template-columns: repeat(2,1fr); }
}

@media (max-width: 700px) {
  .container { width: min(100% - 26px, 1210px); }
  .hero { padding-top: 48px; }
  .hero-grid { grid-template-columns: 1fr; }
  .stat-rail { grid-template-columns: repeat(2,1fr); }
  .rail-item:nth-child(odd) { border-right: 1px solid var(--line); }
  .hero-main { padding: 38px 25px; border-radius: 38px 12px 38px 12px; }
  .hero h1 { font-size: 48px; }
  .hero-glass { min-height: 380px; }
  .section { padding: 66px 0; }
  .section-head { align-items: flex-start; flex-direction: column; gap: 12px; }
  .feature-tabs { grid-template-columns: 1fr; }
  .tab-list { grid-template-columns: repeat(3,1fr); border-right: 0; border-bottom: 1px solid var(--line); }
  .tab-label { padding: 18px 12px; border-right: 1px solid var(--line); border-bottom: 0; }
  .tab-label strong { font-size: 13px; }
  .tab-display { padding: 34px 24px; }
  .node-compass { width: 100%; height: auto; padding: 0; transform: none; }
  .compass-core { position: relative; width: min(330px, 88vw); height: min(330px, 88vw); top: auto; left: auto; margin: 0 auto 24px; transform: none; }
  .city-pin { position: static; margin: 8px 0; transform: none; }
  .review-mosaic { grid-template-columns: 1fr; grid-template-rows: auto; }
  .review-main { grid-row: auto; }
  .faq-path::before { left: 12px; }
  .faq-step, .faq-step:nth-child(even) { width: calc(100% - 40px); margin-left: 40px; }
  .faq-step::after, .faq-step:nth-child(even)::after { right: auto; left: -35px; }
  .platform { grid-template-columns: 1fr; }
  .install-ice, .decision-branches { grid-template-columns: 1fr; }
  .decision-root { width: 100%; }
  .cta, .copyright { align-items: flex-start; flex-direction: column; }
  .cta { padding: 29px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}