:root {
  color-scheme: dark;
  --bg: #111821;
  --panel: #182330;
  --ink: #f8fafc;
  --muted: #bac4cf;
  --quiet: #8e9aa8;
  --line: rgba(255,255,255,.2);
  --blue: #6bd0ff;
  --red: #ff6269;
  --lime: #d8ff75;
  --sans: Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --serif: "Noto Serif SC", "Songti SC", "SimSun", serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--sans); line-height: 1.65; overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
button { color: inherit; font: inherit; }
.shell { width: min(1140px, calc(100% - 48px)); margin-inline: auto; }
.topbar { width: min(1140px, calc(100% - 48px)); height: 76px; margin-inline: auto; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 11px; font-size: 9px; line-height: 1.35; letter-spacing: .16em; font-weight: 700; }
.brand-mark { width: 32px; height: 32px; display: grid; place-items: center; border: 1px solid #83909e; border-radius: 50%; letter-spacing: 0; }
.topbar nav { display: flex; align-items: center; gap: 25px; color: #cbd3dc; font-size: 12px; }
.topbar nav a:hover { color: white; }
.topbar .nav-contact { display: flex; align-items: center; gap: 9px; padding: 7px 11px; border: 1px solid rgba(216,255,117,.62); background: rgba(216,255,117,.07); color: var(--lime); cursor: pointer; }
.topbar .nav-contact small { padding-left: 9px; border-left: 1px solid rgba(216,255,117,.3); color: #dce8bd; font-size: 9px; white-space: nowrap; }
.topbar .nav-contact:hover, .topbar .nav-contact.copied { background: var(--lime); color: #17200e; }
.topbar .nav-contact:hover small, .topbar .nav-contact.copied small { color: #17200e; border-left-color: rgba(23,32,14,.25); }
.eyebrow { margin: 0; color: #c0cad4; font-size: 10px; font-weight: 700; letter-spacing: .17em; }
.eyebrow span { display: inline-block; width: 28px; height: 1px; margin: 0 10px 3px 0; background: var(--lime); }
h1, h2 { font-family: var(--serif); font-weight: 500; letter-spacing: -.045em; }
h2 { margin: 0; font-size: clamp(40px, 4.7vw, 64px); line-height: 1.1; }

.hero { position: relative; padding: 92px 0 44px; display: grid; grid-template-columns: minmax(0,1fr) 310px; grid-template-rows: auto auto; gap: 50px 76px; overflow: hidden; }
.hero::before { content: ""; position: absolute; width: 420px; height: 420px; top: 54px; right: 52px; border: 1px solid rgba(88,199,255,.18); border-radius: 50%; box-shadow: inset 40px 0 100px rgba(16,107,166,.1), 0 0 100px rgba(16,107,166,.05); pointer-events: none; }
.hero-copy, .availability, .hero-note { position: relative; z-index: 1; }
.hero h1 { margin: 27px 0 25px; font-size: clamp(60px, 8vw, 104px); line-height: .96; }
.hero h1 em { color: transparent; font-style: normal; -webkit-text-stroke: 1px rgba(242,244,246,.65); }
.hero-lead { max-width: 700px; margin: 0; color: #e2e7ec; font-size: clamp(16px, 1.55vw, 20px); line-height: 1.75; }
.hero-tags { margin-top: 27px; display: flex; flex-wrap: wrap; gap: 8px; }
.hero-tags span { padding: 6px 10px; border: 1px solid var(--line); color: #d0d7df; font-size: 10px; letter-spacing: .06em; }
.availability { align-self: center; padding: 24px; background: rgba(25,35,48,.96); border: 1px solid rgba(216,255,117,.52); box-shadow: 0 22px 60px rgba(0,0,0,.22); }
.availability-top { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 9px; color: #c2cbd5; font-size: 9px; letter-spacing: .16em; }
.availability-top small { color: var(--lime); font-size: 10px; }
.live-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--lime); box-shadow: 0 0 16px rgba(216,255,117,.75); }
.availability h2 { margin-top: 30px; font-family: var(--sans); font-size: 43px; font-weight: 750; line-height: 1.04; letter-spacing: -.055em; }
.availability p { margin: 21px 0 25px; color: #b7c1cc; font-size: 12px; line-height: 1.7; }
.availability-tags { margin: -10px 0 22px; display: flex; flex-wrap: wrap; gap: 7px; }
.availability-tags span { padding: 5px 8px; border: 1px solid rgba(216,255,117,.3); border-radius: 999px; background: rgba(216,255,117,.06); color: #def9a1; font-size: 9px; font-weight: 650; letter-spacing: .04em; }
.availability-copy { width: 100%; display: flex; justify-content: space-between; padding: 13px 0 0; border: 0; border-top: 1px solid var(--line); background: transparent; color: var(--lime); font-size: 12px; text-align: left; cursor: pointer; }
.availability-copy:hover, .availability-copy.copied { color: white; }
.hero-note { grid-column: 1/-1; display: grid; grid-template-columns: 48px minmax(0,720px); gap: 20px; padding-top: 21px; border-top: 1px solid var(--line); }
.hero-note span { color: var(--lime); font-size: 10px; letter-spacing: .12em; }
.hero-note p { margin: 0; color: #c0c9d3; font-size: 13px; }

.capability { padding: 96px 0; background: radial-gradient(circle at 78% 18%, rgba(24,119,171,.24), transparent 29%), #151e29; border-block: 1px solid var(--line); }
.section-intro { display: grid; grid-template-columns: 1.1fr .9fr; gap: 76px; align-items: end; }
.section-intro h2 { margin-top: 18px; }
.section-intro > p { margin: 0 0 5px; color: #bcc5cf; font-size: 14px; }
.workflow { margin-top: 51px; display: grid; grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr; align-items: stretch; border-block: 1px solid var(--line); }
.workflow article { padding: 22px 17px 24px 0; }
.workflow article:not(:first-child) { padding-left: 17px; }
.workflow > i { align-self: center; color: #8793a0; font-style: normal; }
.workflow span { color: var(--blue); font-size: 9px; }
.workflow h3 { margin: 20px 0 6px; font-size: 17px; }
.workflow p { margin: 0; color: #aeb8c3; font-size: 11px; line-height: 1.65; }
.metrics { margin-top: 20px; display: grid; grid-template-columns: 1fr 1fr 1.15fr; border: 1px solid var(--line); }
.metric, .toolbox { min-height: 236px; padding: 27px; }
.metric + .metric, .toolbox { border-left: 1px solid var(--line); }
.metric { display: flex; flex-direction: column; justify-content: space-between; }
.metric strong { color: var(--blue); font: 500 clamp(51px, 6vw, 76px)/1 var(--serif); letter-spacing: -.055em; }
.metric b, .toolbox-head b { font-size: 13px; letter-spacing: .05em; }
.metric p { margin: 6px 0 0; color: #aeb8c3; font-size: 11px; line-height: 1.65; }
.toolbox { background: rgba(255,255,255,.04); }
.toolbox-head { display: flex; justify-content: space-between; align-items: center; }
.toolbox-head span { color: var(--red); font-size: 9px; letter-spacing: .16em; }
.tool-list { margin-top: 30px; display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.tool-list span { padding: 8px 9px; border: 1px solid var(--line); color: #c5cdd6; font-size: 10px; }

.concepts { padding: 100px 0; display: grid; grid-template-columns: .7fr 1.3fr; gap: 82px; }
.concept-title { align-self: start; position: sticky; top: 25px; }
.concept-title h2 { margin-top: 17px; font-size: clamp(40px, 4.5vw, 58px); }
.concept-title > p:last-child { max-width: 400px; margin: 22px 0 0; color: #abb6c2; font-size: 13px; }
.concept-rows { border-top: 1px solid var(--line); }
.concept-rows article { display: grid; grid-template-columns: 42px 1fr 1fr auto; gap: 19px; align-items: center; min-height: 126px; border-bottom: 1px solid var(--line); }
.row-index, .concept-rows small { color: #8e9aa8; font-size: 9px; letter-spacing: .13em; }
.concept-rows h3 { margin: 5px 0 0; font-size: 18px; }
.concept-rows p { margin: 0; color: #afb9c4; font-size: 12px; }
.concept-rows article > b { padding: 6px 9px; border: 1px solid var(--line); color: #d0d7df; font-size: 9px; font-weight: 500; white-space: nowrap; }

.access { padding: 96px 0; background: #edf0ec; color: #11151a; }
.access .eyebrow { color: #626b75; }
.access-head { display: grid; grid-template-columns: 1.1fr .9fr; gap: 78px; align-items: end; }
.access-head h2 { margin-top: 17px; }
.access-head > p { margin: 0 0 5px; color: #606a75; font-size: 14px; }
.comparison { margin-top: 50px; border-top: 1px solid #b9c0c4; }
.compare-row { display: grid; grid-template-columns: 145px 1fr 1fr; border-bottom: 1px solid #c4c9cc; }
.compare-row > * { margin: 0; padding: 21px 24px; }
.compare-row > * + * { border-left: 1px solid #c4c9cc; }
.compare-row > span { padding-left: 0; color: #68717a; font-size: 11px; font-weight: 700; }
.compare-row p { color: #4f5963; font-size: 13px; line-height: 1.65; }
.compare-header { min-height: 108px; align-items: stretch; }
.compare-header > span { align-self: end; padding-bottom: 25px; }
.compare-header div { display: flex; flex-direction: column; justify-content: center; background: rgba(255,255,255,.35); }
.compare-header small { font-size: 9px; letter-spacing: .17em; }
.compare-header b { font-size: 32px; line-height: 1.15; letter-spacing: -.03em; }
.compare-header .blue { color: #067dbb; box-shadow: inset 0 3px #27aee8; }
.compare-header .red { color: #cc2f40; box-shadow: inset 0 3px #e34a5b; }
.compare-row code { font: 11px/1.7 ui-monospace, SFMono-Regular, Consolas, monospace; color: #26313b; }
.compare-row strong { color: #b82033; }
.compare-row .blue-strong { color: #067dbb; }
.compare-row .current-label { display: block; margin-bottom: 7px; color: #68717a; font-size: 8px; font-weight: 700; letter-spacing: .08em; }
.source-note { margin-top: 15px; color: #747d86; font-size: 10px; text-align: right; }
.source-note code { color: #38444f; font: 10px/1.6 ui-monospace, SFMono-Regular, Consolas, monospace; }

.account { padding: 100px 0; display: grid; grid-template-columns: .75fr 1.25fr; gap: 82px; }
.account-copy h2 { margin-top: 17px; }
.account-copy > p:last-child { max-width: 400px; margin-top: 22px; color: #adb8c4; font-size: 13px; }
.status-list { border-top: 1px solid var(--line); }
.status-list article { display: grid; grid-template-columns: 40px 1fr auto; gap: 17px; align-items: center; min-height: 134px; border-bottom: 1px solid var(--line); }
.status-list article > span, .status-list small { color: #8f9ba9; font-size: 9px; letter-spacing: .13em; }
.status-list h3 { margin: 4px 0 4px; font-size: 18px; }
.status-list p { margin: 0; color: #abb6c2; font-size: 12px; }
.status-list article > b { padding: 6px 9px; border: 1px solid #778492; color: #c4ccd5; font-size: 9px; white-space: nowrap; }
.status-list .blue-badge { color: var(--blue); border-color: rgba(88,199,255,.55); }
.status-list .red-badge { color: var(--red); border-color: rgba(255,98,105,.55); }
.status-list .verified-badge { color: var(--lime); border-color: rgba(216,255,117,.5); background: rgba(216,255,117,.05); }

.contact { padding: 92px 0; border-block: 1px solid var(--line); background: linear-gradient(125deg,#193743,#141d27 52%,#351b22); }
.contact-inner { display: grid; grid-template-columns: 1fr 350px; gap: 95px; align-items: center; }
.contact-status { display: flex; align-items: center; gap: 9px; color: var(--lime); font-size: 9px; letter-spacing: .18em; }
.contact-status span { width: 8px; height: 8px; border-radius: 50%; background: var(--lime); box-shadow: 0 0 16px rgba(216,255,117,.7); }
.contact h2 { margin-top: 21px; font-size: clamp(52px, 6.2vw, 80px); }
.contact-copy > p { max-width: 570px; margin: 22px 0 0; color: #bdc6d0; font-size: 13px; }
.wechat { max-width: 560px; margin-top: 30px; padding: 15px 0; display: flex; justify-content: space-between; align-items: center; border-block: 1px solid var(--line); }
.wechat small { color: #9ba6b3; font-size: 9px; letter-spacing: .17em; }
.wechat strong { color: var(--lime); font: 500 clamp(20px, 2.3vw, 28px)/1 var(--serif); letter-spacing: .03em; }
.qr-card { width: 100%; margin: 0; padding: 13px; background: #f5f5f2; color: #14171a; box-shadow: 0 24px 55px rgba(0,0,0,.32); }
.qr-card img { display: block; width: 100%; height: auto; object-fit: contain; background: white; }
.qr-card figcaption { display: flex; justify-content: space-between; gap: 18px; padding: 11px 4px 1px; font-size: 10px; }
.qr-card figcaption span { color: #747a80; }

.sources { padding: 88px 0; display: grid; grid-template-columns: .65fr 1.35fr; gap: 82px; }
.sources h2 { margin-top: 14px; font-size: 46px; }
.sources > div:first-child > p:last-child { max-width: 330px; color: #aeb8c3; font-size: 11px; }
.source-links { border-top: 1px solid var(--line); }
.source-links a { display: grid; grid-template-columns: 40px 1fr auto; gap: 17px; align-items: center; padding: 20px 0; border-bottom: 1px solid var(--line); }
.source-links a:hover { color: var(--lime); }
.source-links a > span { color: #8c99a7; font-size: 9px; }
.source-links b { display: block; font-size: 13px; }
.source-links small { display: block; margin-top: 3px; color: #a7b1bc; font-size: 10px; }
.source-links i { font-style: normal; }
footer { min-height: 120px; display: grid; grid-template-columns: 1fr auto; gap: 40px; align-items: center; border-top: 1px solid var(--line); color: #a8b2bd; }
footer > a { font-size: 10px; }

@media (max-width: 960px) {
  .hero { grid-template-columns: 1fr 285px; gap: 38px; }
  .hero h1 { font-size: clamp(58px, 9.8vw, 90px); }
  .section-intro, .access-head, .contact-inner { gap: 50px; }
  .concepts, .account, .sources { grid-template-columns: 1fr; gap: 44px; }
  .concept-title { position: static; }
  .metrics { grid-template-columns: 1fr 1fr; }
  .toolbox { grid-column: 1/-1; border-left: 0; border-top: 1px solid var(--line); min-height: auto; }
  .tool-list { grid-template-columns: repeat(4,1fr); }
}
@media (max-width: 760px) {
  .shell, .topbar { width: min(100% - 30px, 1140px); }
  .topbar { height: 68px; }
  .topbar nav a:not(.nav-contact) { display: none; }
  .hero { padding: 60px 0 34px; grid-template-columns: 1fr; gap: 32px; }
  .hero::before { width: 330px; height: 330px; top: 88px; right: -180px; }
  .hero h1 { margin: 22px 0 20px; font-size: clamp(54px, 17vw, 78px); }
  .hero-lead { font-size: 16px; line-height: 1.7; }
  .availability { max-width: 410px; }
  .availability h2 { font-size: 39px; }
  .hero-note { grid-column: 1; }
  .capability, .access, .concepts, .account, .contact, .sources { padding-block: 72px; }
  .section-intro, .access-head, .contact-inner { grid-template-columns: 1fr; gap: 30px; }
  .workflow { grid-template-columns: 1fr 1fr; }
  .workflow > i { display: none; }
  .workflow article { padding: 20px 14px !important; border-bottom: 1px solid var(--line); }
  .workflow article:nth-of-type(even) { border-left: 1px solid var(--line); }
  .metrics { grid-template-columns: 1fr; }
  .metric + .metric, .toolbox { border-left: 0; border-top: 1px solid var(--line); }
  .metric, .toolbox { min-height: 210px; }
  .toolbox { grid-column: auto; }
  .tool-list { grid-template-columns: 1fr 1fr; }
  .concept-rows article { grid-template-columns: 34px 1fr auto; padding: 20px 0; }
  .concept-rows article > p { grid-column: 2/-1; }
  .compare-row { grid-template-columns: 78px 1fr 1fr; }
  .compare-row > * { padding: 16px 10px; }
  .compare-row > span { padding-left: 0; font-size: 10px; }
  .compare-row p { font-size: 11px; }
  .compare-header b { font-size: 24px; }
  .contact-inner { justify-items: stretch; }
  .qr-card { width: min(100%, 350px); justify-self: center; }
  footer { min-height: auto; padding: 38px 0; grid-template-columns: 1fr; text-align: center; }
  footer .brand { justify-content: center; }
}
@media (max-width: 460px) {
  h2 { font-size: 37px; }
  .topbar nav { gap: 0; }
  .hero h1 { font-size: clamp(43px, 13vw, 58px); }
  .hero-tags span { flex: 1 0 calc(50% - 8px); text-align: center; }
  .workflow { grid-template-columns: 1fr; }
  .workflow article:nth-of-type(even) { border-left: 0; }
  .concept-rows article { grid-template-columns: 30px 1fr; gap: 13px; }
  .concept-rows article > p, .concept-rows article > b { grid-column: 2; }
  .concept-rows article > b { justify-self: start; }
  .compare-row { grid-template-columns: 65px 1fr 1fr; }
  .compare-row > * { padding: 14px 7px; }
  .compare-header small { font-size: 7px; }
  .compare-header b { font-size: 20px; }
  .status-list article { grid-template-columns: 30px 1fr; padding: 21px 0; }
  .status-list article > b { grid-column: 2; justify-self: start; }
  .wechat { align-items: flex-start; flex-direction: column; gap: 8px; }
  .wechat strong { font-size: 22px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { transition: none !important; } }

/* Modern interface pass */
:root {
  --bg: #131b25;
  --panel: #1b2734;
  --ink: #f8fafc;
  --muted: #c0c9d3;
  --quiet: #94a1af;
  --line: rgba(255,255,255,.14);
  --blue: #66d0ff;
  --lime: #d9ff78;
}

body {
  background:
    radial-gradient(circle at 12% 4%, rgba(69, 142, 188, .14), transparent 28rem),
    radial-gradient(circle at 90% 22%, rgba(108, 80, 177, .1), transparent 32rem),
    var(--bg);
}

.shell { width: min(1180px, calc(100% - 48px)); }

.topbar {
  position: sticky;
  top: 14px;
  z-index: 30;
  width: min(1180px, calc(100% - 48px));
  height: 68px;
  margin-top: 14px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(18, 26, 36, .84);
  box-shadow: 0 18px 50px rgba(0,0,0,.22);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
}
.brand { font-size: 10px; color: #e8edf2; }
.brand-mark { width: 36px; height: 36px; border-radius: 11px; background: rgba(255,255,255,.06); border-color: rgba(255,255,255,.22); }
.topbar nav { gap: 28px; color: #ced6df; font-size: 13px; }
.topbar nav > a { position: relative; }
.topbar nav > a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -7px; height: 2px; border-radius: 2px; background: var(--blue); transition: right .2s ease; }
.topbar nav > a:hover::after { right: 0; }

.topbar .nav-contact {
  appearance: none;
  -webkit-appearance: none;
  min-width: 210px;
  height: 46px;
  padding: 6px 7px 6px 13px;
  gap: 14px;
  justify-content: space-between;
  border: 1px solid rgba(217,255,120,.24);
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(217,255,120,.13), rgba(102,208,255,.08));
  color: #f5f8fa;
  box-shadow: inset 0 1px rgba(255,255,255,.08);
  transition: transform .2s ease, border-color .2s ease, background .2s ease;
}
.topbar .nav-contact:hover,
.topbar .nav-contact.copied {
  transform: translateY(-1px);
  border-color: rgba(217,255,120,.6);
  background: linear-gradient(135deg, rgba(217,255,120,.18), rgba(102,208,255,.13));
  color: #fff;
}
.wechat-meta { display: flex; min-width: 0; flex-direction: column; align-items: flex-start; line-height: 1.15; }
.topbar .nav-contact .wechat-meta small { padding: 0; border: 0; color: #99a6b4; font-size: 8px; letter-spacing: .16em; }
.topbar .nav-contact:hover .wechat-meta small,
.topbar .nav-contact.copied .wechat-meta small { color: #b9c5d0; }
.wechat-meta strong { margin-top: 3px; font-size: 12px; font-weight: 650; letter-spacing: .02em; }
.copy-badge {
  flex: 0 0 auto;
  padding: 7px 10px;
  border-radius: 9px;
  background: var(--lime);
  color: #17200e;
  font-size: 10px;
  font-weight: 750;
  line-height: 1;
}

h1, h2 { font-family: var(--sans); }
h2 { font-weight: 680; letter-spacing: -.045em; }
.eyebrow { color: #b8c4d0; font-size: 11px; }

.hero {
  min-height: 660px;
  padding: 104px 0 62px;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 58px 72px;
  align-items: center;
}
.hero::before {
  width: 560px;
  height: 560px;
  top: 28px;
  right: -55px;
  border: 0;
  background: radial-gradient(circle at 48% 48%, rgba(102,208,255,.14), rgba(102,208,255,.03) 45%, transparent 70%);
  box-shadow: none;
}
.hero h1 { margin: 28px 0 28px; font-family: var(--sans); font-size: clamp(62px, 7.6vw, 98px); font-weight: 760; line-height: .98; letter-spacing: -.065em; }
.hero h1 em { color: var(--blue); -webkit-text-stroke: 0; font-weight: 700; }
.hero-lead { max-width: 680px; color: #dce3ea; font-size: clamp(17px, 1.55vw, 20px); line-height: 1.8; }
.hero-tags { gap: 9px; margin-top: 30px; }
.hero-tags span { padding: 8px 12px; border-radius: 999px; background: rgba(255,255,255,.045); color: #cbd4dd; font-size: 11px; }

.availability {
  position: relative;
  padding: 30px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 24px;
  background: linear-gradient(155deg, rgba(38,54,70,.98), rgba(23,33,46,.98));
  box-shadow: 0 30px 80px rgba(0,0,0,.28), inset 0 1px rgba(255,255,255,.08);
}
.availability::after { content: ""; position: absolute; width: 180px; height: 180px; right: -75px; top: -80px; border-radius: 50%; background: rgba(102,208,255,.13); filter: blur(4px); pointer-events: none; }
.availability-top { position: relative; z-index: 1; color: #c7d0d9; }
.availability h2 { position: relative; z-index: 1; margin-top: 34px; font-size: 48px; line-height: 1.02; }
.availability p { position: relative; z-index: 1; margin: 22px 0 28px; color: #b9c4cf; font-size: 13px; }
.availability-copy {
  position: relative;
  z-index: 1;
  appearance: none;
  -webkit-appearance: none;
  align-items: center;
  padding: 14px 14px 14px 16px;
  border: 0;
  border-radius: 14px;
  background: linear-gradient(135deg, #e2ff96, #bfe95a);
  color: #15200d;
  box-shadow: 0 12px 28px rgba(145,184,55,.18);
  transition: transform .2s ease, box-shadow .2s ease;
}
.availability-copy:hover,
.availability-copy.copied { color: #15200d; transform: translateY(-2px); box-shadow: 0 16px 34px rgba(145,184,55,.26); }
.copy-text { display: flex; flex-direction: column; align-items: flex-start; line-height: 1.18; }
.copy-text small { color: rgba(21,32,13,.64); font-size: 9px; letter-spacing: .08em; }
.copy-text strong { margin-top: 4px; font-size: 13px; font-weight: 800; }
.copy-icon { width: 32px; height: 32px; display: grid; place-items: center; border-radius: 10px; background: rgba(255,255,255,.45); font-size: 17px; }

.hero-note {
  grid-template-columns: auto minmax(0, 760px);
  align-items: center;
  width: fit-content;
  max-width: 100%;
  padding: 18px 20px;
  border: 1px solid rgba(102,208,255,.14);
  border-radius: 16px;
  background: rgba(102,208,255,.055);
}
.hero-note span { padding: 5px 9px; border-radius: 999px; background: rgba(217,255,120,.12); font-size: 9px; }
.hero-note p { color: #c7d0da; font-size: 14px; }

.geo-summary { padding: 92px 0 105px; }
.geo-summary-head { max-width: 810px; }
.geo-summary-head h2 { margin-top: 14px; font-size: clamp(38px, 5vw, 64px); line-height: 1.08; }
.geo-summary-head > p:last-child { max-width: 760px; margin-top: 22px; color: #b7c1cc; font-size: 15px; line-height: 1.85; }
.geo-summary-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 42px; }
.geo-summary-grid article { min-height: 220px; padding: 26px; border: 1px solid var(--line); border-radius: 18px; background: rgba(255,255,255,.03); }
.geo-summary-grid small { color: var(--blue); font-size: 10px; font-weight: 760; letter-spacing: .12em; }
.geo-summary-grid h3 { margin: 28px 0 13px; font-size: 21px; }
.geo-summary-grid p { color: #b5c0ca; font-size: 13px; line-height: 1.8; }
.geo-summary-note { margin-top: 18px; color: #8f9daa; font-size: 11px; }
.geo-topic-links{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-top:24px}.geo-topic-links a{display:flex;flex-direction:column;gap:5px;padding:16px 17px;border:1px solid rgba(255,255,255,.16);border-radius:12px;text-decoration:none;background:rgba(255,255,255,.04);transition:.2s ease}.geo-topic-links a:hover{border-color:var(--green);transform:translateY(-2px)}.geo-topic-links strong{color:#fff;font-size:15px}.geo-topic-links span{color:var(--muted);font-size:12px;line-height:1.55}

.capability { padding: 110px 0; border: 0; background: linear-gradient(180deg, #18232f, #151e29); }
.section-intro > p { color: #c0c9d3; font-size: 15px; line-height: 1.8; }
.workflow { gap: 12px; margin-top: 56px; border: 0; }
.workflow article,
.workflow article:not(:first-child) { padding: 22px; border: 1px solid var(--line); border-radius: 17px; background: rgba(255,255,255,.035); }
.workflow article { position: relative; overflow: hidden; }
.workflow article::before { content: ""; position: absolute; inset: 0 0 auto; height: 3px; background: var(--blue); }
.workflow .reverse-card::before { background: linear-gradient(90deg, #63d5ff, #4a8dff); }
.workflow .vuln-card::before { background: linear-gradient(90deg, #8b9cff, #b56cff); }
.workflow .verify-card::before { background: linear-gradient(90deg, #ffb85c, #ff6b72); }
.workflow .repair-card::before { background: linear-gradient(90deg, #d9ff78, #6ce5b1); }
.workflow .reverse-card span, .workflow .reverse-card h3 { color: #72d8ff; }
.workflow .vuln-card span, .workflow .vuln-card h3 { color: #b9a0ff; }
.workflow .verify-card span, .workflow .verify-card h3 { color: #ffb26b; }
.workflow .repair-card span, .workflow .repair-card h3 { color: #d9ff78; }
.workflow > i { color: #72808e; }
.workflow h3 { margin-top: 28px; font-size: 18px; }
.workflow p { color: #afbbc7; font-size: 12px; }
.metrics { gap: 14px; margin-top: 18px; border: 0; }
.metric, .toolbox { min-height: 245px; padding: 28px; border: 1px solid var(--line) !important; border-radius: 20px; background: rgba(255,255,255,.035); }
.metric { box-shadow: inset 0 3px rgba(102,208,255,.45); }
.toolbox { box-shadow: inset 0 3px rgba(255,98,105,.38); }
.metric strong { font-family: var(--sans); font-weight: 650; }
.metric p { color: #b3bec9; font-size: 12px; }
.tool-list span { padding: 10px; border-radius: 10px; background: rgba(255,255,255,.035); font-size: 11px; }

.concepts { padding: 110px 0; }
.concept-title > p:last-child { color: #b3bdc8; font-size: 14px; line-height: 1.8; }
.concept-rows { border: 0; }
.concept-rows article { min-height: 128px; margin-bottom: 12px; padding: 22px; border: 1px solid var(--line); border-radius: 17px; background: rgba(255,255,255,.025); }
.concept-rows p { color: #b6c0cb; font-size: 13px; }
.concept-rows article > b { border-radius: 999px; background: rgba(255,255,255,.04); }

.access { padding: 110px 0; background: #f1f4f2; }
.access-head > p { font-size: 15px; line-height: 1.8; }
.comparison { overflow: hidden; border: 1px solid #cbd1d4; border-radius: 22px; background: rgba(255,255,255,.52); }
.compare-row > span { padding-left: 22px; }
.compare-row:last-child { border-bottom: 0; }
.source-note { padding-right: 4px; }

.account { padding: 110px 0; }
.account-copy > p:last-child { color: #b3bdc8; font-size: 14px; line-height: 1.8; }
.status-list { border: 0; }
.status-list article { min-height: 126px; margin-bottom: 12px; padding: 20px 22px; border: 1px solid var(--line); border-radius: 17px; background: rgba(255,255,255,.025); }
.status-list p { color: #b5c0cb; font-size: 13px; }
.status-list article > b { border-radius: 999px; }

.contact { position: relative; padding: 110px 0; overflow: hidden; background: linear-gradient(135deg, #1b3a47, #18212c 52%, #3a1c24); }
.contact::before { content: ""; position: absolute; width: 520px; height: 520px; left: -250px; bottom: -330px; border-radius: 50%; background: rgba(102,208,255,.09); filter: blur(4px); pointer-events: none; }
.contact-inner { position: relative; grid-template-columns: minmax(0,1fr) 360px; gap: clamp(60px, 8vw, 110px); }
.contact-copy { max-width: 650px; }
.contact h2 { margin-top: 20px; font-size: clamp(54px, 6vw, 78px); line-height: .98; }
.contact h2 span { white-space: nowrap; }
.contact h2 em { color: var(--lime); font-style: normal; }
.contact-copy > p { max-width: 590px; margin-top: 26px; color: #c2cbd4; font-size: 14px; line-height: 1.85; }
.contact-wechat {
  appearance: none;
  -webkit-appearance: none;
  width: min(100%, 590px);
  margin-top: 30px;
  padding: 10px 10px 10px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border: 1px solid rgba(217,255,120,.27);
  border-radius: 17px;
  background: linear-gradient(135deg, rgba(255,255,255,.07), rgba(217,255,120,.045));
  color: #fff;
  cursor: pointer;
  box-shadow: inset 0 1px rgba(255,255,255,.07), 0 14px 35px rgba(0,0,0,.12);
  transition: transform .2s ease, border-color .2s ease, background .2s ease;
}
.contact-wechat:hover, .contact-wechat.copied { transform: translateY(-2px); border-color: rgba(217,255,120,.62); background: linear-gradient(135deg, rgba(255,255,255,.09), rgba(217,255,120,.09)); }
.contact-wechat-info { min-width: 0; display: flex; flex-direction: column; align-items: flex-start; }
.contact-wechat-info small { color: #9eabb7; font-size: 9px; font-weight: 700; letter-spacing: .16em; }
.contact-wechat-info strong { margin-top: 5px; color: #f7f9fb; font-size: clamp(20px, 2.2vw, 27px); font-weight: 650; line-height: 1; letter-spacing: .035em; }
.contact-copy-badge { flex: 0 0 auto; min-width: 94px; padding: 13px 16px; border-radius: 12px; background: var(--lime); color: #17200e; font-size: 12px; font-weight: 750; text-align: center; box-shadow: 0 9px 22px rgba(217,255,120,.15); }
.contact-wechat.copied .contact-copy-badge { background: #fff; }
.qr-card { padding: 14px; border-radius: 22px; overflow: hidden; box-shadow: 0 30px 70px rgba(0,0,0,.26); transform: rotate(.35deg); }

.sources { padding: 100px 0; }
.sources > div:first-child > p:last-child { color: #b2bdc8; font-size: 12px; line-height: 1.8; }
.source-links a { margin-bottom: 10px; padding: 20px 18px; border: 1px solid var(--line); border-radius: 14px; background: rgba(255,255,255,.025); }
.source-links { border: 0; }
.source-links small { color: #aeb8c3; font-size: 11px; }
.faq-section { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: clamp(42px, 7vw, 100px); padding: 105px 0; border-top: 1px solid var(--line); }
.faq-intro h2 { margin: 14px 0 20px; font-size: clamp(42px, 5vw, 68px); }
.faq-intro > p:last-child { color: #aeb9c4; font-size: 13px; line-height: 1.8; }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { padding: 22px 40px 22px 0; color: #f1f4f6; font-size: 16px; font-weight: 680; cursor: pointer; }
.faq-list details p { padding: 0 28px 24px 0; color: #adb8c3; font-size: 13px; line-height: 1.85; }
footer { width: min(1180px, calc(100% - 48px)); min-height: 130px; }
.footer-owner { margin-top: 12px; color: #8794a1; font-size: 11px; }
.footer-nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 12px 22px; }

@media (max-width: 960px) {
  .topbar nav { gap: 18px; }
  .topbar .nav-contact { min-width: 190px; }
  .hero { grid-template-columns: minmax(0,1fr) 320px; gap: 42px; }
  .hero h1 { font-size: clamp(54px, 8.4vw, 78px); }
  .workflow { grid-template-columns: 1fr 1fr; }
  .workflow > i { display: none; }
  .workflow article, .workflow article:not(:first-child) { padding: 22px; }
  .contact-inner { grid-template-columns: minmax(0,1fr) 330px; gap: 50px; }
  .geo-summary-grid { grid-template-columns: 1fr 1fr; }
  .geo-topic-links { grid-template-columns: 1fr 1fr; }
  .geo-summary-grid article:last-child { grid-column: 1 / -1; }
}

@media (max-width: 760px) {
  .shell { width: min(100% - 30px, 1180px); }
  .topbar { top: 8px; width: min(100% - 20px, 1180px); height: 62px; margin-top: 8px; padding: 0 10px 0 12px; border-radius: 15px; }
  .brand { font-size: 9px; }
  .brand-mark { width: 34px; height: 34px; }
  .topbar .nav-contact { min-width: 176px; height: 44px; padding: 5px 6px 5px 10px; border-radius: 12px; }
  .wechat-meta strong { font-size: 11px; }
  .copy-badge { padding: 7px 9px; }
  .hero { min-height: auto; padding: 78px 0 54px; grid-template-columns: 1fr; gap: 30px; }
  .hero h1 { font-size: clamp(48px, 14vw, 68px); }
  .hero-lead { font-size: 16px; }
  .availability { max-width: none; padding: 26px; border-radius: 20px; }
  .hero-note { width: 100%; grid-template-columns: auto 1fr; }
  .capability, .access, .concepts, .account, .contact, .sources, .geo-summary, .faq-section { padding-block: 80px; }
  .workflow { grid-template-columns: 1fr 1fr; }
  .metrics { gap: 12px; }
  .metric, .toolbox { min-height: 220px; }
  .concept-rows article { padding: 20px; }
  .compare-row > span { padding-left: 10px; }
  .contact-inner { grid-template-columns: 1fr; }
  .faq-section { grid-template-columns: 1fr; gap: 30px; }
  .contact-copy { max-width: none; }
  .contact h2 { font-size: clamp(48px, 12vw, 68px); }
  .contact-wechat { width: 100%; }
  .qr-card { transform: none; }
  footer { width: min(100% - 30px, 1180px); }
  .footer-nav { justify-content: flex-start; }
}

@media (max-width: 460px) {
  .brand > span:last-child { display: none; }
  .topbar .nav-contact { min-width: 190px; }
  .topbar .nav-contact .wechat-meta small { display: none; }
  .wechat-meta strong { margin-top: 0; font-size: 12px; }
  .hero h1 { font-size: clamp(45px, 13vw, 58px); }
  .hero-tags span { flex: 1 0 calc(50% - 9px); }
  .workflow { grid-template-columns: 1fr; }
  .geo-summary-grid { grid-template-columns: 1fr; }
  .geo-topic-links { grid-template-columns: 1fr; }
  .geo-summary-grid article:last-child { grid-column: auto; }
  .hero-note { align-items: start; }
  .concept-rows article, .status-list article { border-radius: 14px; }
  .contact h2 { font-size: clamp(43px, 12.5vw, 56px); }
  .contact h2 span { white-space: normal; }
  .contact-wechat { padding: 9px 9px 9px 14px; gap: 12px; }
  .contact-wechat-info strong { font-size: 18px; }
  .contact-copy-badge { min-width: 82px; padding: 12px 10px; font-size: 11px; }
}