:root {
  --ink: #17211d;
  --muted: #66706b;
  --paper: #f4f1e8;
  --paper-deep: #e9e4d8;
  --white: #fffefa;
  --green: #184f3b;
  --green-bright: #26795a;
  --orange: #e97439;
  --line: rgba(23, 33, 29, 0.13);
  --shadow: 0 24px 80px rgba(32, 45, 39, 0.13);
  --radius: 28px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
.shell { width: min(1180px, calc(100% - 48px)); margin: 0 auto; }
.skip-link { position: fixed; top: 10px; left: 10px; z-index: 100; padding: 10px 14px; background: var(--ink); color: white; transform: translateY(-160%); }
.skip-link:focus { transform: translateY(0); }

.site-header { position: absolute; inset: 0 0 auto; z-index: 10; height: 88px; border-bottom: 1px solid rgba(23, 33, 29, 0.08); }
.nav-wrap { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; }
.brand-mark { width: 42px; height: 42px; border-radius: 50%; display: grid; place-items: center; color: #fff; background: var(--green); font-family: Georgia, serif; font-size: 20px; box-shadow: inset 0 0 0 5px rgba(255,255,255,.12); }
.brand-name { font-family: Georgia, "Noto Serif SC", "Songti SC", serif; font-size: 18px; font-weight: 700; letter-spacing: .12em; line-height: 1.1; }
.brand-name small { display: block; margin-top: 5px; font-family: Inter, sans-serif; font-size: 8px; letter-spacing: .22em; font-weight: 700; color: var(--muted); }
.nav { display: flex; align-items: center; gap: 28px; }
.nav a { font-size: 14px; font-weight: 650; text-decoration: none; }
.nav a:not(.nav-cta):hover { color: var(--green-bright); }
.nav-cta { padding: 10px 17px; border: 1px solid var(--ink); border-radius: 999px; }
.nav-cta:hover { color: white; background: var(--ink); }

.hero { position: relative; min-height: 760px; padding: 155px 0 78px; overflow: hidden; background: radial-gradient(circle at 72% 34%, #fffdf5 0, #f4f1e8 33%, #ebe6da 100%); }
.hero::after { content: ""; position: absolute; inset: auto 0 0; height: 1px; background: var(--line); }
.hero-grid { display: grid; grid-template-columns: .88fr 1.12fr; align-items: center; gap: 70px; }
.eyebrow { margin: 0 0 24px; display: flex; align-items: center; gap: 10px; color: var(--green-bright); font-size: 12px; font-weight: 800; letter-spacing: .18em; }
.eyebrow span { width: 28px; height: 1px; background: currentColor; }
.hero h1, .section h2, .legal-main h1 { margin: 0; font-family: Georgia, "Noto Serif SC", "Songti SC", serif; font-weight: 600; letter-spacing: -.035em; }
.hero h1 { font-size: clamp(48px, 5.2vw, 76px); line-height: 1.13; }
.hero h1 em { color: var(--green); font-style: normal; }
.hero-lead { max-width: 560px; margin: 28px 0 0; color: var(--muted); font-size: 18px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 38px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 16px; min-height: 52px; padding: 0 24px; border-radius: 999px; text-decoration: none; font-weight: 750; transition: transform .2s, box-shadow .2s, background .2s; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: white; background: var(--green); box-shadow: 0 10px 28px rgba(24,79,59,.2); }
.button-primary:hover { background: #0f3e2d; box-shadow: 0 14px 34px rgba(24,79,59,.27); }
.button-ghost { border: 1px solid var(--line); background: rgba(255,255,255,.42); }
.button-ghost:hover { background: white; }
.hero-note { margin: 20px 0 0; color: var(--muted); font-size: 12px; }
.hero-note::before { content: "✓"; margin-right: 7px; color: var(--green-bright); font-weight: 900; }
.hero-orbit { position: absolute; border: 1px solid rgba(24,79,59,.09); border-radius: 50%; pointer-events: none; }
.orbit-one { width: 760px; height: 760px; right: -340px; top: -260px; }
.orbit-two { width: 420px; height: 420px; left: -270px; bottom: -230px; }

.hero-stage { position: relative; height: 490px; }
.stage-glow { position: absolute; width: 420px; height: 420px; left: 50%; top: 50%; border-radius: 50%; background: rgba(24,79,59,.1); filter: blur(2px); transform: translate(-50%,-50%); }
.phone-preview, .mini-window { position: absolute; background: rgba(255,255,252,.94); border: 1px solid rgba(23,33,29,.1); box-shadow: var(--shadow); backdrop-filter: blur(16px); }
.phone-preview { left: 50%; top: 5px; width: 264px; height: 476px; transform: translateX(-50%) rotate(1.5deg); border: 8px solid #173f31; border-radius: 38px; overflow: hidden; padding: 20px 17px; }
.phone-bar { height: 27px; display: flex; align-items: flex-start; justify-content: space-between; font-size: 10px; font-weight: 800; }
.phone-bar i { width: 62px; height: 15px; margin-right: 74px; margin-top: -12px; border-radius: 0 0 12px 12px; background: #173f31; }
.radar-head, .mini-top { display: flex; align-items: center; gap: 9px; }
.radar-head b { font-family: Georgia, serif; }
.radar-head small { margin-left: auto; color: var(--muted); font-size: 9px; }
.mini-icon { width: 28px; height: 28px; display: grid; place-items: center; border-radius: 9px; color: white; font-weight: 900; }
.radar-icon { background: linear-gradient(145deg,#174f3a,#30956d); }
.action-icon { background: linear-gradient(145deg,#d96530,#f39b5d); }
.vocab-icon { background: linear-gradient(145deg,#385979,#6f91ad); }
.radar-focus { margin: 22px 0 17px; padding: 20px 16px; color: white; border-radius: 18px; background: linear-gradient(145deg,#184f3b,#236c50); }
.radar-focus span { display: block; font-size: 9px; opacity: .72; letter-spacing: .12em; }
.radar-focus strong { display: block; margin-top: 7px; font-family: Georgia, serif; font-size: 18px; }
.radar-focus p { margin: 5px 0 0; font-size: 10px; opacity: .75; }
.news-row { display: grid; grid-template-columns: 28px 1fr; gap: 8px; align-items: center; padding: 12px 3px; border-bottom: 1px solid var(--line); }
.news-row b { color: var(--orange); font: 700 12px Georgia,serif; }
.news-row span { font-size: 11px; line-height: 1.4; }
.mini-window { width: 220px; min-height: 142px; padding: 17px; border-radius: 21px; }
.mini-window-left { left: -12px; top: 102px; transform: rotate(-5deg); z-index: 2; }
.mini-window-right { right: -13px; bottom: 78px; transform: rotate(4deg); z-index: 2; }
.mini-top b { font-size: 13px; }
.mini-window > p { margin: 10px 0 13px; color: var(--muted); font-size: 10px; }
.task-line { display: grid; grid-template-columns: 9px 1fr auto; gap: 7px; align-items: center; margin-top: 8px; font-size: 9px; }
.task-line i { width: 8px; height: 8px; border: 1px solid var(--orange); border-radius: 50%; }
.task-line small { color: var(--muted); }
.mini-window-right > small { display: block; margin-top: 13px; color: var(--muted); }
.word { display: block; margin-top: 4px; font: 600 25px Georgia,serif; color: #385979; }
.progress { height: 4px; background: #e1e6e8; border-radius: 4px; overflow: hidden; }
.progress span { display: block; width: 62%; height: 100%; background: #5d7e99; }

.filing-strip { background: var(--white); border-bottom: 1px solid var(--line); }
.filing-grid { min-height: 82px; display: grid; grid-template-columns: 1.2fr repeat(3,1fr); align-items: center; gap: 24px; }
.filing-grid p { margin: 0; font-size: 12px; color: var(--muted); }
.filing-grid b { color: var(--ink); }
.filing-grid strong { display: block; color: var(--ink); font-size: 11px; font-weight: 600; }
.signal-dot { display: inline-block; width: 8px; height: 8px; margin-right: 8px; border-radius: 50%; background: #2f9b69; box-shadow: 0 0 0 5px rgba(47,155,105,.12); }

.section { padding: 110px 0; }
.section-heading { display: grid; grid-template-columns: 1.1fr .7fr; gap: 70px; align-items: end; margin-bottom: 54px; }
.section h2 { font-size: clamp(38px, 4.5vw, 58px); line-height: 1.2; }
.section-heading > p { margin: 0 0 6px; color: var(--muted); }
.product-list { display: grid; gap: 26px; }
.product-card { display: grid; grid-template-columns: .9fr 1.1fr; gap: 56px; min-height: 455px; padding: 54px; border: 1px solid var(--line); border-radius: var(--radius); background: rgba(255,254,250,.7); overflow: hidden; }
.product-card:nth-child(even) .product-copy { order: 2; }
.product-card:nth-child(even) .product-visual { order: 1; }
.product-copy { display: flex; flex-direction: column; justify-content: center; }
.product-title-row { display: grid; grid-template-columns: 58px 1fr auto; gap: 15px; align-items: center; }
.app-symbol { width: 58px; height: 58px; display: grid; place-items: center; border-radius: 17px; color: white; font: 800 21px Georgia,serif; box-shadow: 0 10px 24px rgba(23,33,29,.15); }
.product-title-row p { margin: 0 0 2px; color: var(--muted); font-size: 11px; font-weight: 750; letter-spacing: .1em; }
.product-title-row h3 { margin: 0; font: 600 29px Georgia,"Noto Serif SC",serif; }
.status { align-self: start; padding: 6px 10px; border: 1px solid rgba(38,121,90,.22); border-radius: 999px; color: var(--green-bright); background: rgba(38,121,90,.07); font-size: 10px; font-weight: 750; white-space: nowrap; }
.product-lead { margin: 28px 0 23px; color: var(--muted); font-size: 16px; }
.feature-pills { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; list-style: none; }
.feature-pills li { padding: 7px 11px; border-radius: 8px; background: var(--paper-deep); font-size: 11px; font-weight: 700; }
.product-links { display: flex; flex-wrap: wrap; align-items: center; gap: 19px; margin-top: 36px; padding-top: 22px; border-top: 1px solid var(--line); }
.product-links a { color: var(--green); font-size: 12px; font-weight: 750; text-decoration: none; }
.product-links a:hover { text-decoration: underline; text-underline-offset: 3px; }
.product-links small { margin-left: auto; color: var(--muted); font-size: 10px; }

.product-visual { align-self: center; min-height: 335px; padding: 25px; border-radius: 24px; box-shadow: 0 20px 60px rgba(32,45,39,.12); transform: rotate(1deg); }
.product-card:nth-child(even) .product-visual { transform: rotate(-1deg); }
.visual-toolbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 22px; }
.visual-toolbar b { font: 600 18px Georgia,"Noto Serif SC",serif; }
.visual-toolbar span { font-size: 10px; opacity: .62; }
.action-visual { background: #fff7ee; border: 1px solid #efd9c7; }
.quadrants { display: grid; grid-template-columns: repeat(2,1fr); gap: 10px; }
.quadrants > div { min-height: 112px; padding: 14px; border: 1px solid rgba(220,119,64,.18); border-radius: 15px; background: rgba(255,255,255,.68); }
.quadrants small { display: block; margin-bottom: 11px; color: #a45a34; font-size: 9px; font-weight: 800; }
.quadrants p { display: flex; align-items: center; gap: 7px; margin: 7px 0; font-size: 10px; }
.quadrants i { width: 8px; height: 8px; border: 1px solid #dd7942; border-radius: 50%; }
.quadrants .done { display: grid; place-items: center; align-content: center; text-align: center; }
.quadrants .done small { margin: 0; }
.quadrants .done strong { color: var(--orange); font: 600 34px Georgia,serif; line-height: 1.2; }
.quadrants .done span { font-size: 9px; color: var(--muted); }
.vocab-visual { background: #f2f6f7; border: 1px solid #cfdbdf; }
.word-card { padding: 23px; border-radius: 18px; background: white; }
.word-card > span { color: #77909e; font-size: 9px; font-weight: 800; letter-spacing: .16em; }
.word-card strong { display: block; margin-top: 7px; color: #36576f; font: 600 35px Georgia,serif; }
.word-card small { color: #80929c; }
.word-card p { margin: 15px 0 11px; font-size: 12px; }
.word-card blockquote { margin: 0; padding: 10px 12px; border-left: 2px solid #63839a; color: #667985; background: #f3f6f7; font: italic 11px Georgia,serif; }
.review-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 13px; }
.review-actions span, .review-actions b { padding: 8px 12px; border-radius: 999px; font-size: 9px; }
.review-actions span { background: white; }
.review-actions b { color: white; background: #466b84; }
.radar-visual { color: #fff; background: #123f30; border: 1px solid #2d6753; }
.trend-card { padding: 18px; border-radius: 17px; background: linear-gradient(135deg,#24684e,#2b8060); }
.trend-card > span { font-size: 9px; opacity: .72; letter-spacing: .08em; }
.trend-card strong { display: block; margin: 8px 0; font: 600 18px Georgia,"Noto Serif SC",serif; }
.trend-card p { display: flex; align-items: center; gap: 9px; margin: 0; font-size: 9px; opacity: .8; }
.trend-card i { width: 50px; height: 3px; border-radius: 3px; background: linear-gradient(90deg,#d3e85e 70%,rgba(255,255,255,.2) 70%); }
.trend-list { margin: 13px 0 0; padding: 0; list-style: none; }
.trend-list li { display: grid; grid-template-columns: 28px 1fr auto; align-items: center; gap: 8px; padding: 10px 5px; border-bottom: 1px solid rgba(255,255,255,.11); }
.trend-list b { color: #d3e85e; font: 700 10px Georgia,serif; }
.trend-list span { font-size: 10px; }
.trend-list small { opacity: .55; font-size: 9px; }
.availability-note { margin: 22px 0 0; text-align: center; color: var(--muted); font-size: 11px; }

.principles { color: white; background: var(--green); }
.principles-grid { display: grid; grid-template-columns: .75fr 1.25fr; gap: 90px; }
.eyebrow.light { color: #a8d6be; }
.principles-intro p:last-child { max-width: 400px; margin-top: 25px; color: rgba(255,255,255,.66); }
.principle-cards { display: grid; grid-template-columns: repeat(3,1fr); gap: 1px; background: rgba(255,255,255,.15); }
.principle-cards article { padding: 32px 27px; background: var(--green); }
.principle-cards span { color: #a8d6be; font: 600 12px Georgia,serif; }
.principle-cards h3 { margin: 45px 0 13px; font: 600 20px Georgia,"Noto Serif SC",serif; }
.principle-cards p { margin: 0; color: rgba(255,255,255,.62); font-size: 13px; }

.about-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 26px; }
.about-card, .contact-card { padding: 52px; border: 1px solid var(--line); border-radius: var(--radius); background: rgba(255,254,250,.72); }
.about-card > p:not(.eyebrow) { max-width: 680px; color: var(--muted); }
.contact-card { color: white; background: var(--ink); }
.contact-card > span { color: #9cb4a8; font-size: 11px; font-weight: 800; letter-spacing: .1em; }
.contact-card h3 { margin: 20px 0 10px; font: 600 25px Georgia,"Noto Serif SC",serif; }
.contact-card p { color: rgba(255,255,255,.6); font-size: 13px; }
.contact-card > a { display: inline-flex; gap: 14px; margin: 20px 0 34px; color: #bfe4d0; text-underline-offset: 4px; }
.contact-card dl { margin: 0; border-top: 1px solid rgba(255,255,255,.14); }
.contact-card dl div { display: grid; grid-template-columns: 70px 1fr; gap: 14px; padding: 13px 0; border-bottom: 1px solid rgba(255,255,255,.1); font-size: 11px; }
.contact-card dt { color: rgba(255,255,255,.5); }
.contact-card dd { margin: 0; }

.site-footer { padding: 42px 0; border-top: 1px solid var(--line); background: var(--paper-deep); }
.footer-grid { display: grid; grid-template-columns: 1fr 1.2fr .8fr auto; gap: 32px; align-items: center; }
.footer-brand .brand-mark { width: 36px; height: 36px; font-size: 16px; }
.footer-company strong { font-size: 12px; }
.footer-company p { margin: 3px 0 0; color: var(--muted); font-size: 10px; }
.site-footer nav { display: flex; gap: 17px; }
.site-footer nav a, .icp-link { color: var(--muted); font-size: 11px; text-decoration: none; }
.site-footer nav a:hover, .icp-link:hover { color: var(--green); }

.legal-header { position: static; background: var(--paper); }
.legal-main { padding: 82px 0 110px; }
.legal-main header { max-width: 760px; margin-bottom: 55px; }
.legal-main h1 { font-size: clamp(42px,6vw,68px); }
.legal-main header > p { color: var(--muted); }
.legal-layout { display: grid; grid-template-columns: 220px minmax(0,760px); gap: 64px; align-items: start; }
.legal-toc { position: sticky; top: 30px; padding: 22px; border: 1px solid var(--line); border-radius: 18px; background: rgba(255,254,250,.72); }
.legal-toc strong { display: block; margin-bottom: 12px; font-size: 11px; letter-spacing: .1em; }
.legal-toc a { display: block; padding: 7px 0; color: var(--muted); font-size: 12px; text-decoration: none; }
.legal-toc a:hover { color: var(--green); }
.legal-content section { margin-bottom: 44px; scroll-margin-top: 30px; }
.legal-content h2 { margin: 0 0 14px; font: 600 27px Georgia,"Noto Serif SC",serif; }
.legal-content h3 { margin: 24px 0 8px; font-size: 16px; }
.legal-content p, .legal-content li { color: #59635e; font-size: 14px; }
.legal-content ul { padding-left: 19px; }
.legal-content .notice { padding: 19px 22px; border-left: 3px solid var(--orange); background: rgba(255,254,250,.76); }
.support-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; margin: 34px 0 50px; }
.support-card { padding: 27px; border: 1px solid var(--line); border-radius: 20px; background: rgba(255,254,250,.75); }
.support-card .app-symbol { margin-bottom: 20px; }
.support-card h2 { font-size: 22px; }
.support-card p { min-height: 70px; }
.support-card a { color: var(--green); font-size: 13px; font-weight: 750; }
.faq { border-top: 1px solid var(--line); }
.faq details { padding: 20px 0; border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; font-weight: 750; }
.faq p { margin-bottom: 0; }

@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; gap: 55px; }
  .hero { padding-top: 140px; }
  .hero-copy { text-align: center; }
  .hero-copy .eyebrow, .hero-actions { justify-content: center; }
  .hero-lead { margin-left: auto; margin-right: auto; }
  .hero-stage { width: min(620px,100%); margin: 0 auto; }
  .filing-grid { grid-template-columns: repeat(3,1fr); padding: 18px 0; }
  .filing-grid p:first-child { grid-column: 1/-1; }
  .product-card { grid-template-columns: 1fr; }
  .product-card:nth-child(even) .product-copy, .product-card:nth-child(even) .product-visual { order: initial; }
  .principles-grid, .about-grid { grid-template-columns: 1fr; }
  .principle-cards { margin-top: 10px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .legal-layout { grid-template-columns: 1fr; gap: 25px; }
  .legal-toc { position: static; display: flex; flex-wrap: wrap; gap: 4px 18px; }
  .legal-toc strong { width: 100%; }
}

@media (max-width: 720px) {
  .shell { width: min(100% - 32px, 1180px); }
  .site-header { height: 76px; }
  .brand-name { font-size: 16px; }
  .nav a { display: none; }
  .nav .nav-cta { display: inline-flex; padding: 8px 13px; font-size: 12px; }
  .hero { min-height: auto; padding: 118px 0 60px; }
  .hero h1 { font-size: 44px; }
  .hero-lead { font-size: 16px; }
  .hero-stage { height: 410px; transform: scale(.9); transform-origin: top center; margin-bottom: -40px; }
  .mini-window { width: 180px; }
  .mini-window-left { left: -30px; }
  .mini-window-right { right: -30px; }
  .filing-grid { grid-template-columns: 1fr; gap: 10px; }
  .filing-grid p:first-child { grid-column: auto; }
  .filing-grid strong { display: inline; margin-left: 5px; }
  .section { padding: 78px 0; }
  .section-heading { grid-template-columns: 1fr; gap: 22px; }
  .product-card { gap: 34px; padding: 27px; min-height: 0; }
  .product-title-row { grid-template-columns: 52px 1fr; }
  .app-symbol { width: 52px; height: 52px; }
  .status { grid-column: 2; justify-self: start; }
  .product-links small { width: 100%; margin-left: 0; }
  .product-visual { min-height: 0; padding: 18px; }
  .principles-grid { gap: 45px; }
  .principle-cards { grid-template-columns: 1fr; }
  .principle-cards h3 { margin-top: 18px; }
  .about-card, .contact-card { padding: 31px; }
  .footer-grid { grid-template-columns: 1fr; text-align: left; }
  .support-grid { grid-template-columns: 1fr; }
  .support-card p { min-height: auto; }
  .legal-main { padding-top: 56px; }
}

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