:root {
  --ink: #111214;
  --muted: #70737a;
  --line: #dedfe2;
  --soft: #f5f5f3;
  --white: #fff;
  --red: #e92f4d;
  --blue: #2677d8;
  --green: #198965;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: #fff; font-family: "Microsoft YaHei","PingFang SC",system-ui,sans-serif; line-height: 1.75; }
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: #111; transform: translateY(-160%); }
.skip:focus { transform: translateY(0); }
.wrap { width: min(1180px, calc(100% - 48px)); margin-inline: auto; }
.header { position: sticky; z-index: 50; top: 0; background: rgba(255,255,255,.92); border-bottom: 1px solid var(--line); backdrop-filter: blur(16px); }
.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: 16px; font-weight: 900; letter-spacing: -.02em; }
.mark { display: grid; width: 35px; height: 35px; place-items: center; color: #fff; background: var(--ink); border-radius: 50%; }
.links { display: flex; justify-content: center; gap: 28px; color: #555960; font-size: 13px; font-weight: 700; }
.links a:hover,.links a[aria-current="page"] { color: var(--red); }
.actions { display: flex; align-items: center; gap: 11px; }
.lang { color: #8b8e93; font-size: 11px; }
.button { display: inline-flex; min-height: 44px; align-items: center; justify-content: center; padding: 9px 18px; color: var(--ink); background: #fff; border: 1px solid var(--ink); font-size: 13px; font-weight: 900; line-height: 1.2; transition: .18s ease; }
.button:hover { color: #fff; background: var(--ink); transform: translateY(-2px); }
.button-dark { color: #fff; background: var(--ink); }
.button-red { color: #fff; background: var(--red); border-color: var(--red); }
.menu { display: none; width: 42px; height: 42px; padding: 0; background: #fff; border: 1px solid var(--line); font-size: 18px; }

.hero { min-height: 760px; padding: 105px 0 50px; }
.hero-grid { display: grid; align-items: end; grid-template-columns: 1fr 300px; gap: 70px; }
.kicker { display: block; margin-bottom: 18px; color: var(--red); font-size: 11px; font-weight: 900; letter-spacing: .13em; text-transform: uppercase; }
.hero h1,.page-hero h1 { max-width: 930px; margin: 0; font-size: clamp(54px,8vw,108px); font-weight: 800; line-height: .96; letter-spacing: -.078em; }
.hero h1 span { display: block; color: var(--red); }
.hero-copy { max-width: 690px; margin: 27px 0 0; color: var(--muted); font-size: 17px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }
.hero-art { position: relative; height: 460px; }
.hero-art::before { position: absolute; width: 220px; height: 220px; top: 110px; right: 20px; content: ""; background: var(--soft); border-radius: 50%; }
.hero-art img { position: absolute; width: 100%; height: 100%; object-fit: contain; filter: drop-shadow(0 20px 24px rgba(0,0,0,.12)); }
.trust-line { display: flex; margin-top: 72px; padding: 22px 0; border-block: 1px solid var(--line); }
.trust-line span { flex: 1; color: #555960; font-size: 12px; font-weight: 800; text-align: center; }
.trust-line span + span { border-left: 1px solid var(--line); }

.section { padding: 110px 0; }
.section-soft { background: var(--soft); }
.section-dark { color: #fff; background: #111214; }
.head { display: grid; align-items: end; margin-bottom: 60px; grid-template-columns: 1fr 380px; gap: 70px; }
.head.center { display: block; max-width: 760px; margin-inline: auto; text-align: center; }
.head h2 { max-width: 800px; margin: 0; font-size: clamp(34px,5vw,60px); line-height: 1.08; letter-spacing: -.055em; }
.head p { margin: 0; color: var(--muted); }
.head.center p { margin-top: 16px; }
.section-dark .head p { color: #9a9da2; }

.metrics { display: grid; grid-template-columns: repeat(4,1fr); border-top: 1px solid var(--ink); }
.metric { padding: 30px 0; border-bottom: 1px solid var(--line); }
.metric + .metric { padding-left: 28px; border-left: 1px solid var(--line); }
.metric strong { display: block; font-size: 39px; letter-spacing: -.05em; }
.metric span { color: var(--muted); font-size: 12px; }
.data-note { margin: 12px 0 0; color: #8b8e93; font-size: 10px; text-align: right; }

.chapters { display: grid; gap: 0; border-top: 1px solid var(--line); }
.chapter { display: grid; min-height: 250px; align-items: center; padding: 35px 0; border-bottom: 1px solid var(--line); grid-template-columns: 130px 1fr 340px; gap: 45px; }
.chapter-num { color: var(--red); font-size: 12px; }
.chapter h3 { margin: 0; font-size: 34px; letter-spacing: -.04em; }
.chapter p { color: var(--muted); }

.cities { display: grid; grid-template-columns: repeat(5,1fr); border-block: 1px solid #383a3f; }
.city { padding: 30px 20px; text-align: center; }
.city + .city { border-left: 1px solid #383a3f; }
.city strong { display: block; font-size: 20px; }
.city span { display: block; margin-top: 4px; color: #989ba0; font-size: 11px; }
.city b { display: inline-block; margin-top: 12px; color: var(--red); font-size: 11px; }
.network-image { width: min(700px,100%); margin: 55px auto 0; }
.network-image img { width: 100%; max-height: 320px; object-fit: cover; filter: grayscale(.8); }

.quotes { display: grid; grid-template-columns: 1.35fr .65fr; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.quote { display: flex; min-height: 220px; padding: 34px; background: #fff; flex-direction: column; justify-content: space-between; }
.quote:first-child { grid-row: 1/3; }
.quote blockquote { margin: 20px 0; color: #3c3f44; font-size: 16px; }
.quote:first-child blockquote { font-size: 24px; }
.stars { color: #d18e16; letter-spacing: 3px; }
.quote footer { color: var(--muted); font-size: 11px; }
.quote footer strong { display: block; color: var(--ink); }

.pricing { display: grid; grid-template-columns: repeat(3,1fr); border-top: 1px solid var(--ink); }
.plan { display: flex; min-height: 420px; padding: 32px; border-bottom: 1px solid var(--line); flex-direction: column; }
.plan + .plan { border-left: 1px solid var(--line); }
.plan.featured { color: #fff; background: var(--ink); }
.plan h3 { margin: 0; }
.price { margin-top: 22px; font-size: 38px; font-weight: 900; }
.price small { color: var(--muted); font-size: 11px; font-weight: 500; }
.plan ul { margin: 25px 0; padding: 0; color: var(--muted); list-style: none; font-size: 13px; }
.plan li { padding: 6px 0; }
.plan li::before { margin-right: 8px; content: "—"; }
.plan .button { width: 100%; margin-top: auto; }

.answers { display: grid; grid-template-columns: repeat(2,1fr); border-top: 1px solid var(--line); }
.answer { min-height: 250px; padding: 34px 34px 34px 0; border-bottom: 1px solid var(--line); }
.answer:nth-child(even) { padding-right: 0; padding-left: 34px; border-left: 1px solid var(--line); }
.answer code { color: var(--red); font-size: 11px; }
.answer h3 { margin: 25px 0 9px; }
.answer p,.answer li { color: var(--muted); font-size: 13px; }

.page-hero { padding: 100px 0 70px; }
.page-hero-grid { display: grid; align-items: center; grid-template-columns: 1fr 380px; gap: 80px; }
.page-hero h1 { font-size: clamp(46px,6vw,78px); }
.page-hero p { color: var(--muted); }
.page-art { height: 390px; }
.page-art img { width: 100%; height: 100%; object-fit: contain; filter: drop-shadow(0 20px 24px rgba(0,0,0,.12)); }

.versions { border-top: 1px solid var(--ink); }
.version { display: grid; min-height: 190px; align-items: center; padding: 28px 0; border-bottom: 1px solid var(--line); grid-template-columns: 90px 1fr 220px; gap: 35px; }
.version-icon { display: grid; width: 64px; height: 64px; place-items: center; background: var(--soft); border-radius: 50%; font-size: 21px; font-weight: 900; }
.version h3 { margin: 0; font-size: 24px; }
.version p { margin: 7px 0 0; color: var(--muted); font-size: 12px; }
.version .button { width: 100%; }

.steps { display: grid; grid-template-columns: repeat(4,1fr); border-top: 1px solid var(--line); }
.step { min-height: 230px; padding: 30px 24px; border-bottom: 1px solid var(--line); }
.step + .step { border-left: 1px solid var(--line); }
.step b { color: var(--red); font-size: 11px; }
.step h3 { margin: 45px 0 8px; }
.step p { color: var(--muted); font-size: 13px; }

.guide { display: grid; grid-template-columns: 260px 1fr; gap: 60px; }
.guide-nav { position: sticky; top: 100px; height: fit-content; border-top: 1px solid var(--ink); }
.guide-nav a { display: block; padding: 12px 0; color: var(--muted); border-bottom: 1px solid var(--line); font-size: 12px; }
.guide-body h2 { margin: 48px 0 12px; font-size: 29px; }
.guide-body h2:first-child { margin-top: 0; }
.guide-body h3 { margin: 27px 0 8px; }
.guide-body p,.guide-body li { color: var(--muted); }
.note { margin: 28px 0; padding: 22px; background: var(--soft); border-left: 3px solid var(--red); }

.cta { display: flex; align-items: center; justify-content: space-between; gap: 30px; padding: 42px 0; border-block: 1px solid var(--ink); }
.cta h2 { margin: 0; }
.cta p { margin: 5px 0 0; color: var(--muted); }
.footer { margin-top: 90px; padding: 55px 0 22px; background: var(--soft); 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; color: var(--muted); font-size: 12px; }
.footer h3 { margin: 0 0 14px; font-size: 13px; }
.footer-links { display: grid; gap: 8px; color: var(--muted); font-size: 12px; }
.copyright { display: flex; justify-content: space-between; gap: 20px; margin-top: 40px; padding-top: 18px; color: #8a8d92; border-top: 1px solid var(--line); font-size: 11px; }

@media(max-width:900px){
  .menu{display:block}.links{position:absolute;top:74px;right:24px;left:24px;display:none;padding:16px;background:#fff;border:1px solid var(--line);flex-direction:column;align-items:stretch;gap:8px}.links.open{display:flex}.links a{padding:8px}.lang,.actions>.button{display:none}
  .hero-grid,.page-hero-grid{grid-template-columns:1fr}.hero-art{height:350px}.head{display:block}.head p{margin-top:12px}.chapter{grid-template-columns:90px 1fr}.chapter p{grid-column:2}.cities{grid-template-columns:repeat(3,1fr)}.city:nth-child(4),.city:nth-child(5){border-top:1px solid #383a3f}.pricing,.steps{grid-template-columns:repeat(2,1fr)}.guide{grid-template-columns:1fr}.guide-nav{position:static}
}
@media(max-width:620px){
  .wrap{width:min(100% - 26px,1180px)}.hero{padding-top:70px}.hero h1{font-size:51px}.trust-line,.metrics,.cities,.quotes,.pricing,.answers,.steps{grid-template-columns:1fr;display:grid}.trust-line span{padding:10px}.trust-line span+span,.metric+ .metric,.city+ .city,.plan+ .plan,.step+ .step{border-top:1px solid var(--line);border-left:0}.quote:first-child{grid-row:auto}.answer:nth-child(even){padding-left:0;border-left:0}.chapter{grid-template-columns:1fr;gap:12px}.chapter p{grid-column:auto}.version{grid-template-columns:70px 1fr}.version .button{grid-column:1/-1}.section{padding:72px 0}.cta,.copyright{align-items:flex-start;flex-direction:column}.footer-grid{grid-template-columns:1fr 1fr}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition-duration:.01ms!important}}