:root {
  color-scheme: light;
  --ink: #10231e;
  --muted: #62716c;
  --paper: #f3f2eb;
  --night: #061815;
  --green: #38d996;
  --green-deep: #0d7f5b;
  --line: rgba(16, 35, 30, 0.14);
  --white-line: rgba(255, 255, 255, 0.14);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; color: var(--ink); background: var(--paper); font-family: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.hidden { display: none !important; }
.site-header { width: min(1320px, calc(100% - 48px)); height: 82px; margin: 0 auto; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; border-bottom: 1px solid var(--line); }
.brand { display: inline-flex; align-items: center; gap: 12px; font-size: 18px; font-weight: 700; letter-spacing: .08em; }
.brand-wordmark { display: grid; gap: 2px; line-height: 1.05; letter-spacing: .04em; }
.brand-wordmark strong { font-size: 15px; font-weight: 800; }
.brand-wordmark small { color: var(--muted); font-size: 10px; font-weight: 700; letter-spacing: .12em; }
.brand-symbol { width: 29px; height: 25px; position: relative; display: inline-block; }
.brand-symbol i { position: absolute; width: 15px; height: 15px; border: 1.8px solid var(--green-deep); border-radius: 50%; }
.brand-symbol i:nth-child(1) { left: 0; top: 0; }
.brand-symbol i:nth-child(2) { right: 0; top: 0; }
.brand-symbol i:nth-child(3) { left: 7px; bottom: 0; }
.site-header nav { display: flex; gap: 34px; color: #3f514b; font-size: 13px; }
.site-header nav a, .header-login { transition: color .2s ease; }
.site-header nav a:hover, .header-login:hover { color: var(--green-deep); }
.header-login { justify-self: end; font-size: 13px; font-weight: 700; }
.header-login span { margin-left: 6px; color: var(--green-deep); }
.hero { width: min(1320px, calc(100% - 48px)); min-height: 740px; margin: 0 auto; padding: 86px 0 80px; display: grid; grid-template-columns: .88fr 1.12fr; align-items: center; gap: 74px; }
.eyebrow { margin: 0 0 24px; display: flex; align-items: center; gap: 10px; color: var(--green-deep); font-size: 11px; font-weight: 800; letter-spacing: .2em; }
.eyebrow span { width: 26px; height: 1px; background: currentColor; }
.hero h1 { margin: 0; font-family: "Songti SC", "STSong", serif; font-size: clamp(54px, 6.3vw, 92px); font-weight: 500; line-height: 1.06; letter-spacing: -.065em; }
.hero h1 em { color: var(--green-deep); font-style: normal; }
.hero-lead { max-width: 590px; margin: 32px 0 0; color: var(--muted); font-size: 16px; line-height: 2; }
.hero-actions { margin-top: 34px; display: flex; gap: 12px; flex-wrap: wrap; }
.button { min-height: 48px; padding: 0 22px; display: inline-flex; align-items: center; justify-content: center; gap: 20px; border: 1px solid var(--ink); font-size: 13px; font-weight: 700; transition: transform .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: #fff; background: var(--ink); }
.button-primary:hover { background: var(--green-deep); border-color: var(--green-deep); }
.button-ghost { border-color: var(--line); }
.hero-proof { margin-top: 48px; display: flex; flex-wrap: wrap; gap: 20px; color: #43534e; font-size: 11px; }
.hero-proof span { display: inline-flex; align-items: center; gap: 7px; }
.hero-proof i, .footer-status i { width: 6px; height: 6px; border-radius: 50%; background: var(--green-deep); box-shadow: 0 0 0 4px rgba(13,127,91,.1); }
.replay-stage { min-width: 0; overflow: hidden; color: #e9fff6; background: var(--night); box-shadow: 0 34px 90px rgba(5,30,23,.22); }
.stage-topbar { height: 56px; padding: 0 21px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--white-line); color: #d7ede5; font-size: 12px; }
.stage-topbar > div { display: flex; align-items: center; gap: 10px; }
.live-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 5px rgba(56,217,150,.1); }
.stage-id { color: #71958a; font-family: ui-monospace, monospace; letter-spacing: .08em; }
.stage-body { min-height: 445px; padding: 32px; display: grid; grid-template-columns: minmax(210px, .8fr) 1.2fr; gap: 30px; align-items: center; background: radial-gradient(circle at 20% 20%, rgba(56,217,150,.09), transparent 38%); }
.phone-shell { width: 238px; height: 420px; justify-self: center; overflow: hidden; border: 5px solid #1e3a32; border-radius: 30px; background: #f5f5ef; box-shadow: 0 24px 60px rgba(0,0,0,.35); }
.phone-bar { height: 30px; padding: 0 16px; display: flex; align-items: center; justify-content: space-between; color: #273832; font-size: 8px; font-weight: 700; }
.phone-page { height: calc(100% - 30px); padding: 25px 19px; position: relative; color: #14231f; background: linear-gradient(180deg, #fff 0%, #f1f4ef 100%); }
.mini-kicker { color: var(--green-deep); font-size: 8px; font-weight: 800; letter-spacing: .15em; }
.phone-page h2 { margin: 7px 0 23px; font-family: "Songti SC", serif; font-size: 20px; font-weight: 600; }
.phone-page label { margin: 14px 0 6px; display: block; color: #73817c; font-size: 8px; }
.fake-input { height: 35px; padding: 0 10px; display: flex; align-items: center; border: 1px solid #d6ddd8; border-radius: 4px; background: #fff; font-size: 9px; }
.fake-input.active { border-color: var(--green-deep); box-shadow: 0 0 0 2px rgba(13,127,91,.08); }
.fake-input.muted { color: #a3aca8; }
.caret { width: 1px; height: 13px; margin-left: 2px; background: var(--green-deep); animation: blink 1s step-end infinite; }
.fake-button { height: 36px; margin-top: 25px; display: flex; align-items: center; justify-content: center; color: #fff; border-radius: 4px; background: var(--green-deep); font-size: 9px; font-weight: 700; }
.touch-point { width: 34px; height: 34px; position: absolute; right: 15px; bottom: 72px; display: grid; place-items: center; border: 1px solid rgba(56,217,150,.8); border-radius: 50%; background: rgba(56,217,150,.14); box-shadow: 0 0 0 9px rgba(56,217,150,.08); }
.touch-point span { width: 15px; height: 15px; display: grid; place-items: center; color: var(--night); border-radius: 50%; background: var(--green); font-size: 7px; font-weight: 800; }
@keyframes blink { 50% { opacity: 0; } }
.event-panel { min-width: 0; align-self: stretch; padding: 8px 0; }
.event-head { padding-bottom: 18px; display: flex; justify-content: space-between; border-bottom: 1px solid var(--white-line); color: #78998f; font-size: 10px; }
.event-head b { color: #aac4bb; font-weight: 500; }
.event-panel ol { margin: 10px 0 0; padding: 0; list-style: none; }
.event-panel li { padding: 16px 10px; display: grid; grid-template-columns: 48px 1fr; gap: 10px; border-bottom: 1px solid rgba(255,255,255,.08); font-size: 10px; }
.event-panel li.current { margin: 0 -10px; padding-left: 20px; padding-right: 20px; background: rgba(56,217,150,.1); border-left: 2px solid var(--green); }
.event-panel time { color: #56746a; font-family: ui-monospace, monospace; }
.event-panel li.current time { color: var(--green); }
.event-panel li div { display: flex; justify-content: space-between; gap: 8px; }
.event-panel li b { font-weight: 600; }
.event-panel li span { overflow: hidden; color: #628078; text-overflow: ellipsis; white-space: nowrap; }
.timeline { height: 62px; padding: 0 22px; display: grid; grid-template-columns: 28px 1fr 26px; align-items: center; gap: 16px; border-top: 1px solid var(--white-line); }
.timeline button { width: 28px; height: 28px; display: grid; place-items: center; color: var(--night); border: 0; border-radius: 50%; background: var(--green); font-size: 9px; }
.timeline-track { height: 2px; position: relative; background: #274139; }
.timeline-track span { width: 67%; height: 100%; display: block; background: var(--green); }
.timeline-track i { width: 8px; height: 8px; position: absolute; left: 67%; top: 50%; border-radius: 50%; background: #fff; transform: translate(-50%,-50%); }
.timeline b { color: #709187; font-size: 10px; }
.trust-strip { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.trust-strip div { min-height: 128px; padding: 28px clamp(24px,4vw,66px); display: flex; flex-direction: column; justify-content: center; border-right: 1px solid var(--line); }
.trust-strip div:last-child { border: 0; }
.trust-strip strong { font-family: "Songti SC", serif; font-size: 27px; font-weight: 500; }
.trust-strip span { margin-top: 7px; color: var(--muted); font-size: 10px; }
.group-section { padding: 120px max(24px, calc((100% - 1320px)/2)); display: grid; grid-template-columns: .82fr 1.18fr; gap: 90px; align-items: center; background: #e8e7df; scroll-margin-top: 20px; }
.group-label { margin: 0 0 18px; color: var(--muted); font-size: 12px; font-weight: 700; letter-spacing: .16em; }
.group-intro h2 { margin: 0; font-family: "Songti SC", "STSong", serif; font-size: clamp(42px,5vw,70px); font-weight: 500; line-height: 1.18; letter-spacing: -.04em; }
.group-intro > p:last-of-type { max-width: 580px; margin: 28px 0 0; color: #485a54; font-size: 14px; line-height: 2; }
.group-link { min-height: 46px; margin-top: 30px; padding: 0 18px; display: inline-flex; align-items: center; gap: 18px; color: #fff; background: var(--ink); font-size: 12px; font-weight: 700; }
.group-link:hover { background: var(--green-deep); }
.group-profile { border: 1px solid var(--line); background: #f8f7f1; box-shadow: 0 25px 70px rgba(16,35,30,.08); }
.group-profile-head { min-height: 180px; padding: 34px; display: grid; align-content: center; gap: 12px; border-bottom: 1px solid var(--line); }
.group-profile-head span { color: var(--green-deep); font-size: 11px; font-weight: 800; letter-spacing: .18em; }
.group-profile-head strong { font-family: "Songti SC", "STSong", serif; font-size: clamp(22px,2.4vw,32px); font-weight: 600; line-height: 1.45; }
.group-profile-head small { color: var(--muted); font-size: 12px; }
.group-values { display: grid; grid-template-columns: repeat(3, 1fr); }
.group-values article { min-height: 220px; padding: 28px; border-right: 1px solid var(--line); }
.group-values article:last-child { border-right: 0; }
.group-values b { color: var(--green-deep); font: 700 10px ui-monospace, monospace; }
.group-values h3 { margin: 38px 0 14px; font-family: "Songti SC", "STSong", serif; font-size: 24px; }
.group-values p { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.85; }
.verification-section { padding: 110px max(24px, calc((100% - 1320px)/2)); display: grid; grid-template-columns: .8fr 1.2fr; gap: 80px; align-items: start; color: #e8f9f2; background: var(--night); scroll-margin-top: 20px; }
.verification-copy h2 { margin: 0; font-family: "Songti SC", serif; font-size: clamp(40px,5vw,68px); font-weight: 500; }
.verification-copy > p:not(.eyebrow) { max-width: 530px; margin: 26px 0 0; color: #9eb9af; font-size: 14px; line-height: 2; }
.verification-copy ul { margin: 30px 0 0; padding: 0; display: grid; gap: 13px; list-style: none; color: #b9d2c9; font-size: 13px; }
.verification-copy li::before { content: "✓"; margin-right: 10px; color: var(--green); }
.verification-card { padding: 30px; color: var(--ink); background: #fffefa; box-shadow: 0 24px 70px rgba(0,0,0,.24); }
.verification-card label { display: block; margin-bottom: 10px; color: #3f514b; font-size: 13px; font-weight: 700; }
.verification-input-row { display: grid; grid-template-columns: 1fr auto; }
.verification-input-row input { min-width: 0; height: 52px; padding: 0 15px; color: var(--ink); border: 1px solid #aebbb5; outline: 0; background: #fff; font: 14px ui-monospace, monospace; text-transform: uppercase; }
.verification-input-row input:focus { border-color: var(--green-deep); box-shadow: 0 0 0 3px rgba(13,127,91,.12); }
.verification-input-row button { min-width: 118px; padding: 0 20px; color: #fff; border: 0; background: var(--green-deep); font-size: 13px; font-weight: 700; cursor: pointer; }
.verification-input-row button:disabled { opacity: .6; cursor: wait; }
.verification-help { margin: 9px 0 0; color: var(--muted); font-size: 12px; }
.verification-error { min-height: 22px; margin: 8px 0 0; color: #a63e34; font-size: 12px; }
.verification-result { margin-top: 20px; border: 1px solid #b8c8c0; }
.verification-result.is-failed { border-color: #d69a92; }
.verification-result-head { padding: 18px 20px; display: flex; justify-content: space-between; gap: 20px; background: #e7f4ee; }
.verification-result.is-failed .verification-result-head { background: #faecea; }
.verification-result-head span { color: var(--green-deep); font-size: 12px; font-weight: 800; }
.verification-result.is-failed .verification-result-head span { color: #a63e34; }
.verification-result-head strong { font-size: 17px; }
.verification-result dl { margin: 0; display: grid; grid-template-columns: 1fr 1fr; }
.verification-result dl > div { min-width: 0; padding: 14px 18px; border-top: 1px solid var(--line); }
.verification-result dl > div:nth-child(odd):not(.wide) { border-right: 1px solid var(--line); }
.verification-result dl > .wide { grid-column: 1 / -1; }
.verification-result dt { color: var(--muted); font-size: 11px; }
.verification-result dd { margin: 6px 0 0; overflow-wrap: anywhere; color: #273a34; font-size: 13px; line-height: 1.65; }
.verification-result .wide dd { font: 11px/1.7 ui-monospace, monospace; }
.verification-result-note { margin: 0; padding: 15px 18px; color: #43534e; background: #f2f1eb; font-size: 12px; line-height: 1.7; }
.section { width: min(1320px, calc(100% - 48px)); margin: 0 auto; padding: 120px 0; }
.section-heading { display: grid; grid-template-columns: 1fr 1.25fr; gap: 80px; align-items: start; }
.section-heading h2, .workflow-copy h2 { margin: 0; font-family: "Songti SC", serif; font-size: clamp(38px,4.2vw,62px); font-weight: 500; line-height: 1.25; letter-spacing: -.04em; }
.capability-grid { margin-top: 80px; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); }
.capability-grid article { min-height: 270px; padding: 30px 42px 38px 0; border-right: 1px solid var(--line); }
.capability-grid article + article { padding-left: 42px; }
.capability-grid article:last-child { border-right: 0; }
.card-index { color: var(--green-deep); font-family: ui-monospace, monospace; font-size: 10px; }
.capability-grid h3 { margin: 62px 0 18px; font-family: "Songti SC", serif; font-size: 28px; font-weight: 600; }
.capability-grid p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.9; }
.workflow { padding: 110px max(24px, calc((100% - 1320px)/2)); display: grid; grid-template-columns: .85fr 1.15fr; gap: 100px; color: #e8f9f2; background: var(--night); }
.eyebrow.light { color: var(--green); }
.workflow-copy p:last-child { max-width: 500px; margin: 28px 0 0; color: #75978b; font-size: 13px; line-height: 2; }
.workflow-list { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--white-line); }
.workflow-list li { min-height: 74px; padding: 0 8px; display: grid; grid-template-columns: 70px 1fr; align-items: center; border-bottom: 1px solid var(--white-line); transition: color .2s, padding .2s; }
.workflow-list li:hover { padding-left: 18px; color: var(--green); }
.workflow-list b { color: #4f7166; font: 10px ui-monospace, monospace; }
.workflow-list span { font-size: 14px; }
.site-footer { width: min(1320px, calc(100% - 48px)); min-height: 150px; margin: 0 auto; display: grid; grid-template-columns: 1fr 1.4fr 1fr; gap: 30px; align-items: center; }
.footer-identity { display: grid; gap: 12px; }
.footer-identity > small { color: var(--muted); font-size: 9px; line-height: 1.6; }
.footer-brand { font-size: 16px; }
.site-footer > p { max-width: 500px; margin: 0; color: var(--muted); font-size: 11px; line-height: 1.8; }
.site-footer > p a { color: var(--green-deep); font-weight: 700; }
.footer-status { justify-self: end; display: inline-flex; align-items: center; gap: 10px; color: var(--muted); font-size: 10px; }
.footer-status.is-error i { background: #bd584c; box-shadow: 0 0 0 4px rgba(189,88,76,.1); }
.not-found { width: min(760px, calc(100% - 40px)); min-height: 100vh; margin: 0 auto; display: flex; flex-direction: column; align-items: flex-start; justify-content: center; }
.not-found h1 { margin: 0 0 40px; font-family: "Songti SC", serif; font-size: clamp(42px,7vw,76px); font-weight: 500; line-height: 1.2; }
@media (max-width: 1050px) {
  .hero { grid-template-columns: 1fr; gap: 60px; }
  .hero-copy { max-width: 760px; }
  .replay-stage { width: 100%; }
  .section-heading, .workflow, .verification-section, .group-section { grid-template-columns: 1fr; gap: 50px; }
}
@media (max-width: 760px) {
  .site-header, .hero, .section, .site-footer { width: min(100% - 32px, 1320px); }
  .site-header { height: 70px; grid-template-columns: 1fr auto; }
  .site-header nav { display: none; }
  .hero { min-height: auto; padding: 60px 0; }
  .hero h1 { font-size: clamp(47px,16vw,72px); }
  .hero-lead { font-size: 14px; }
  .hero-proof { gap: 11px 18px; }
  .stage-body { padding: 24px 16px; grid-template-columns: 1fr; }
  .event-panel { display: none; }
  .phone-shell { width: 225px; }
  .trust-strip { grid-template-columns: 1fr 1fr; }
  .trust-strip div:nth-child(2) { border-right: 0; }
  .trust-strip div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .group-section { padding: 84px 16px; }
  .group-profile-head { min-height: 0; padding: 26px 22px; }
  .group-values { grid-template-columns: 1fr; }
  .group-values article { min-height: 0; padding: 24px 22px; border-right: 0; border-bottom: 1px solid var(--line); }
  .group-values article:last-child { border-bottom: 0; }
  .group-values h3 { margin-top: 18px; }
  .section { padding: 84px 0; }
  .section-heading { gap: 30px; }
  .capability-grid { margin-top: 52px; grid-template-columns: 1fr; }
  .capability-grid article, .capability-grid article + article { min-height: 220px; padding: 28px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .capability-grid h3 { margin-top: 38px; }
  .workflow { padding: 84px 24px; }
  .verification-section { padding: 84px 16px; }
  .verification-card { padding: 20px; }
  .verification-input-row { grid-template-columns: 1fr; gap: 8px; }
  .verification-input-row button { min-height: 48px; }
  .verification-result dl { grid-template-columns: 1fr; }
  .verification-result dl > div:nth-child(odd):not(.wide) { border-right: 0; }
  .site-footer { padding: 36px 0; grid-template-columns: 1fr; }
  .footer-status { justify-self: start; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}