:root {
  --navy: #061725;
  --navy-2: #0a2132;
  --navy-3: #102c3f;
  --paper: #f1eee7;
  --paper-2: #faf8f3;
  --white: #f7faf9;
  --ink: #10202c;
  --muted: #9badb5;
  --ink-muted: #62717a;
  --line: rgba(105, 215, 208, .24);
  --teal: #69d7d0;
  --orange: #f2a51a;
  --orange-light: #ffc862;
  --shadow: 0 28px 80px rgba(0, 0, 0, .22);
  --max: 1240px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 78px; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif; font-size: 16px; line-height: 1.7; -webkit-font-smoothing: antialiased; }
body.nav-open, body.lightbox-open { overflow: hidden; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.site-shell { width: min(var(--max), calc(100% - 80px)); margin: 0 auto; }
.section-dark { color: var(--white); background: var(--navy); }
.section-paper { background: var(--paper); }
.section-light { background: var(--paper-2); }

.scroll-progress { position: fixed; z-index: 1000; inset: 0 0 auto; height: 3px; pointer-events: none; }
.scroll-progress span { display: block; width: 0; height: 100%; background: var(--orange); }

.site-header { position: fixed; z-index: 900; top: 0; left: 0; right: 0; min-height: 76px; padding: 0 max(28px, calc((100vw - var(--max))/2)); display: flex; align-items: center; gap: 32px; color: var(--white); border-bottom: 1px solid rgba(255,255,255,.08); background: rgba(6, 23, 37, .78); backdrop-filter: blur(18px); }
.brand { display: inline-flex; align-items: center; gap: 11px; margin-right: auto; }
.brand img { width: 38px; height: 38px; object-fit: contain; }
.brand span { display: grid; line-height: 1.1; }
.brand b { font-size: 14px; letter-spacing: .08em; }
.brand small { margin-top: 5px; color: var(--muted); font-size: 9px; letter-spacing: .13em; }
.main-nav { display: flex; align-items: center; gap: 25px; }
.main-nav a { position: relative; padding: 27px 0 23px; color: #bdc8cd; font-size: 12px; font-weight: 650; white-space: nowrap; }
.main-nav a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: 20px; height: 2px; background: var(--teal); transition: right .25s ease; }
.main-nav a:hover, .main-nav a.active { color: #fff; }
.main-nav a:hover::after, .main-nav a.active::after { right: 0; }
.header-cta { padding: 10px 15px; border: 1px solid var(--line); border-radius: 2px; color: var(--teal); font-size: 12px; font-weight: 700; }
.header-cta span { margin-left: 12px; }
.nav-toggle { display: none; width: 42px; height: 42px; border: 0; background: transparent; }
.nav-toggle span { display: block; width: 22px; height: 1px; margin: 7px auto; background: #fff; transition: transform .2s; }

.hero { position: relative; min-height: 790px; padding: 150px 0 92px; overflow: hidden; isolation: isolate; }
.hero::before { content: ""; position: absolute; z-index: -2; inset: 0; background: radial-gradient(circle at 82% 36%, rgba(105,215,208,.09), transparent 24%), linear-gradient(90deg, transparent 49.9%, rgba(255,255,255,.035) 50%, transparent 50.1%); }
.hero::after { content: ""; position: absolute; z-index: -1; inset: 0; opacity: .12; background-image: linear-gradient(rgba(105,215,208,.18) 1px, transparent 1px), linear-gradient(90deg, rgba(105,215,208,.18) 1px, transparent 1px); background-size: 90px 90px; mask-image: linear-gradient(90deg, #000, transparent 70%); }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 84px; align-items: center; }
.eyebrow { display: flex; align-items: center; gap: 12px; margin: 0 0 26px; color: var(--teal); font-size: 11px; font-weight: 800; letter-spacing: .22em; text-transform: uppercase; }
.eyebrow span { width: 32px; height: 2px; background: var(--orange); }
.hero-kicker { display: inline-block; margin-bottom: 25px; padding: 7px 11px; color: #c8d2d6; border: 1px solid rgba(255,255,255,.1); font-size: 11px; letter-spacing: .07em; }
.hero h1 { margin: 0; font-size: clamp(52px, 6.1vw, 88px); line-height: .98; letter-spacing: -.07em; font-weight: 900; }
.hero h1 span { color: var(--orange); }
.hero-lead { max-width: 610px; margin: 32px 0 0; color: #b7c4c9; font-size: 17px; line-height: 1.95; }
.hero-actions { display: flex; gap: 13px; margin-top: 35px; }
.button { min-height: 48px; padding: 0 21px; display: inline-flex; align-items: center; justify-content: center; gap: 26px; border: 1px solid transparent; border-radius: 2px; font-size: 13px; font-weight: 800; cursor: pointer; transition: transform .2s, background .2s, color .2s; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: var(--navy); background: var(--orange); }
.button-primary:hover { background: var(--orange-light); }
.button-ghost { color: #d2dcdf; border-color: rgba(255,255,255,.18); }
.button-ghost:hover { color: #fff; border-color: var(--teal); }
.hero-stats { display: flex; gap: 38px; margin: 50px 0 0; }
.hero-stats div { display: grid; gap: 4px; }
.hero-stats dt { color: var(--teal); font-size: 24px; line-height: 1; font-weight: 850; }
.hero-stats dd { margin: 0; color: #738891; font-size: 10px; letter-spacing: .07em; }
.hero-visual { position: relative; min-height: 520px; padding: 24px 40px 50px 0; }
.brand-hero-card { position: relative; width: min(100%, 470px); height: 470px; margin-left: auto; padding: 42px 42px 74px; display: flex; flex-direction: column; overflow: hidden; border: 1px solid rgba(105,215,208,.22); background: radial-gradient(circle at 78% 18%, rgba(28,102,255,.24), transparent 27%), linear-gradient(145deg, #0a2639, #04131f 66%); box-shadow: var(--shadow); isolation: isolate; }
.brand-hero-card::before { content: ""; position: absolute; z-index: -1; inset: 0; opacity: .18; background-image: linear-gradient(rgba(105,215,208,.22) 1px, transparent 1px), linear-gradient(90deg, rgba(105,215,208,.22) 1px, transparent 1px); background-size: 42px 42px; mask-image: linear-gradient(145deg, #000, transparent 78%); }
.brand-hero-card::after { content: "知 / 行"; position: absolute; z-index: -1; right: -16px; bottom: 42px; color: rgba(255,255,255,.025); font-size: 116px; font-weight: 950; letter-spacing: -.09em; white-space: nowrap; }
.brand-hero-mark { display: flex; align-items: center; gap: 16px; }
.brand-hero-mark img { width: 88px; height: 88px; object-fit: contain; filter: drop-shadow(0 10px 25px rgba(0,80,255,.28)); }
.brand-hero-mark > div { display: grid; line-height: 1.1; }
.brand-hero-mark small { color: var(--teal); font-size: 8px; font-weight: 850; letter-spacing: .22em; }
.brand-hero-mark strong { margin-top: 8px; color: #fff; font-size: 24px; letter-spacing: .08em; }
.brand-motto { margin-top: auto; padding-top: 24px; border-top: 1px solid rgba(105,215,208,.22); }
.brand-motto > small { display: block; margin-bottom: 13px; color: #6f8792; font-size: 8px; font-weight: 800; letter-spacing: .2em; }
.brand-motto p { margin: 0; color: #f4f7f7; font-size: clamp(26px, 2.5vw, 35px); line-height: 1.28; font-weight: 900; letter-spacing: -.045em; }
.brand-motto p span { color: var(--orange); }
.brand-card-foot { margin-top: 23px; display: flex; align-items: center; justify-content: space-between; gap: 15px; color: #8799a1; font-size: 8px; }
.brand-card-foot b { color: var(--teal); font-size: 7px; letter-spacing: .13em; }
.route-ticket { position: absolute; z-index: 3; left: 0; right: 15px; bottom: 12px; padding: 20px 24px; color: var(--navy); background: var(--orange); box-shadow: 0 20px 50px rgba(0,0,0,.28); }
.ticket-label { display: block; margin-bottom: 12px; font-size: 9px; font-weight: 800; letter-spacing: .18em; }
.route-line { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.route-line i { font-style: normal; font-size: 12px; font-weight: 800; }
.route-line b { opacity: .45; }
.hero-index { position: absolute; top: 0; right: -6px; color: #617986; font: 9px/1 monospace; letter-spacing: .13em; writing-mode: vertical-rl; }
.hero-scroll { position: absolute; left: 50%; bottom: 26px; display: flex; align-items: center; gap: 12px; color: #6f828c; font-size: 8px; letter-spacing: .18em; transform: translateX(-50%); }
.hero-scroll span { position: relative; width: 1px; height: 35px; background: rgba(255,255,255,.15); }
.hero-scroll span::after { content: ""; position: absolute; inset: 0 0 auto; height: 12px; background: var(--orange); animation: scroll-line 1.8s infinite; }
@keyframes scroll-line { 0% { transform: translateY(0); } 75%,100% { transform: translateY(23px); } }

.offer-overview { padding: 105px 0 95px; border-bottom: 1px solid var(--line); background: #071b2b; }
.offer-topline { display: grid; grid-template-columns: 1fr 370px; gap: 90px; align-items: center; }
.offer-copy .eyebrow { color: var(--teal); margin-bottom: 18px; }
.offer-copy h2 { max-width: 780px; margin: 0; font-size: clamp(39px, 4.2vw, 61px); line-height: 1.16; letter-spacing: -.055em; }
.offer-copy > p:last-of-type { max-width: 750px; margin: 25px 0 0; color: #91a4ad; font-size: 15px; }
.offer-meta { margin-top: 33px; display: flex; flex-wrap: wrap; gap: 9px; }
.offer-meta span { padding: 8px 12px; color: #91a4ad; border: 1px solid rgba(105,215,208,.2); background: rgba(105,215,208,.035); font-size: 10px; }
.offer-meta b { margin-right: 4px; color: var(--orange); }
.offer-price-card { position: relative; padding: 34px 34px 30px; color: #fff; border: 1px solid rgba(105,215,208,.18); background: var(--navy-3); box-shadow: var(--shadow); }
.offer-price-card::after { content: ""; position: absolute; inset: 7px; pointer-events: none; border: 1px solid rgba(105,215,208,.16); }
.offer-price-card > * { position: relative; z-index: 1; }
.offer-badge { position: absolute; top: 0; right: 0; padding: 7px 11px; color: var(--navy); background: var(--orange); font-size: 9px; font-weight: 900; }
.offer-price-card > small { color: var(--teal); font-size: 10px; font-weight: 800; letter-spacing: .15em; }
.offer-price { margin-top: 22px; display: flex; align-items: baseline; gap: 5px; }
.offer-price sup { color: var(--orange); font-size: 23px; font-weight: 800; }
.offer-price strong { font-size: 72px; line-height: 1; letter-spacing: -.07em; }
.offer-price del { margin-left: 8px; color: #738690; font-size: 14px; }
.offer-price-card > p { margin: 12px 0 22px; color: #90a2aa; font-size: 11px; }
.offer-price-card .button { width: 100%; }
.offer-preview-link { position: relative; z-index: 1; margin-top: 15px; display: block; color: #7f939c; text-align: center; font-size: 10px; }
.access-flow { margin: 62px 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); list-style: none; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.access-flow li { position: relative; min-height: 160px; padding: 27px 25px; display: grid; grid-template-columns: 35px 1fr; gap: 14px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: rgba(105,215,208,.025); }
.access-flow li:not(:last-child)::after { content: "→"; position: absolute; z-index: 2; top: 50%; right: -10px; width: 20px; height: 20px; display: grid; place-items: center; color: var(--orange); background: #071b2b; font-size: 11px; transform: translateY(-50%); }
.access-flow li > b { color: var(--orange); font: 10px/1 monospace; }
.access-flow li > span { display: grid; align-content: start; }
.access-flow small { color: var(--teal); font-size: 8px; font-weight: 800; letter-spacing: .14em; }
.access-flow strong { margin-top: 8px; color: #fff; font-size: 19px; }
.access-flow em { margin-top: 7px; color: #81959e; font-size: 11px; font-style: normal; }

.system-section { padding: 130px 0 150px; background: #04131f; }
.section-heading { display: grid; grid-template-columns: 1fr 430px; gap: 80px; align-items: end; margin-bottom: 70px; }
.section-heading .eyebrow { margin-bottom: 18px; }
.section-heading h2 { margin: 0; color: var(--white); font-size: clamp(40px, 4vw, 62px); line-height: 1.15; letter-spacing: -.055em; }
.section-heading > p { margin: 0 0 4px; color: #90a1a9; font-size: 15px; line-height: 2; }
.heading-ink h2 { color: var(--ink); }
.heading-ink > p { color: var(--ink-muted); }
.system-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.system-card { position: relative; min-height: 365px; padding: 31px 28px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: linear-gradient(155deg, rgba(105,215,208,.04), transparent 58%); transition: background .3s, transform .3s; }
.system-card:hover { z-index: 2; background: var(--navy-2); transform: translateY(-8px); }
.system-number { position: absolute; top: 22px; right: 22px; color: #4c6470; font: 10px/1 monospace; }
.system-icon { width: 53px; height: 53px; margin-bottom: 55px; display: grid; place-items: center; color: var(--orange); border: 1px solid rgba(242,165,26,.32); border-radius: 50%; font-size: 17px; font-weight: 900; }
.system-card small, .course-list small, .ai-feature > span, .ai-feature div > span { color: var(--teal); font-size: 9px; font-weight: 800; letter-spacing: .17em; }
.system-card h3 { margin: 10px 0 12px; font-size: 21px; }
.system-card p { margin: 0; color: #8fa1aa; font-size: 13px; }
.system-card b { position: absolute; left: 28px; bottom: 28px; color: var(--orange); font-size: 11px; }

.live-section, .library-section, .community-section, .ai-section, .faq-section { padding: 135px 0; }
.live-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: 70px; align-items: start; }
.live-poster { position: sticky; top: 100px; margin: 0; overflow: hidden; background: var(--navy); box-shadow: 0 24px 60px rgba(13,25,34,.18); cursor: zoom-in; }
.live-poster img { width: 100%; height: auto; aspect-ratio: auto; object-fit: contain; object-position: center; }
.live-poster figcaption { padding: 16px 19px; display: flex; justify-content: space-between; color: #d5dfe2; background: var(--navy); font-size: 11px; }
.live-poster figcaption b { color: var(--orange); }
.course-list { margin: 0; padding: 0; list-style: none; border-top: 1px solid #c8c5bd; }
.course-list li { display: grid; grid-template-columns: 98px 1fr; gap: 26px; padding: 35px 0; border-bottom: 1px solid #c8c5bd; }
.day { width: 76px; height: 76px; display: grid; place-items: center; color: var(--orange); border: 1px solid #bdbab1; border-radius: 50%; font-size: 10px; font-weight: 900; }
.course-list h3 { margin: 5px 0 9px; font-size: 25px; letter-spacing: -.03em; }
.course-list p { margin: 0; color: var(--ink-muted); font-size: 14px; }
.course-list a { display: inline-block; margin-top: 16px; color: #bb6d00; font-size: 12px; font-weight: 800; }
.course-actions { margin-top: 16px; display: flex; align-items: center; justify-content: space-between; gap: 14px; }
.course-actions > span { padding: 4px 8px; color: #277b78; border: 1px solid #b8cecb; background: #eaf3f1; font-size: 9px; font-weight: 800; }
.course-actions a { margin-top: 0; }

.library-filter { display: none; gap: 10px; margin: -25px 0 35px; }
.library-filter button { padding: 9px 15px; color: var(--ink-muted); border: 1px solid #d4d0c8; background: transparent; font-size: 11px; font-weight: 750; cursor: pointer; }
.library-filter button.active { color: var(--paper-2); border-color: var(--navy); background: var(--navy); }
.resource-grid { display: none; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.resource-card { min-width: 0; overflow: hidden; border: 1px solid #ddd8cf; background: #fff; transition: transform .25s, box-shadow .25s; }
.resource-card:hover { transform: translateY(-6px); box-shadow: 0 22px 55px rgba(18,34,43,.12); }
.resource-card.hidden { display: none; }
.resource-card > img { width: 100%; height: 190px; object-fit: cover; }
.resource-card > div { min-height: 270px; padding: 23px 24px 24px; display: flex; flex-direction: column; }
.resource-card span { color: #278d89; font-size: 9px; font-weight: 800; letter-spacing: .12em; }
.resource-card h3 { margin: 10px 0 9px; font-size: 20px; letter-spacing: -.03em; }
.resource-card p { margin: 0; color: var(--ink-muted); font-size: 13px; }
.resource-card button, .ai-feature button { width: max-content; margin-top: auto; padding: 0 0 3px; color: #a86000; border: 0; border-bottom: 1px solid #d4a668; background: none; font-size: 11px; font-weight: 800; cursor: pointer; }
.content-note { margin: 25px 0 0; padding: 19px 22px; color: #65747c; border-left: 3px solid var(--orange); background: #eee9df; font-size: 12px; }
.content-note b { margin-right: 12px; color: var(--ink); }

.topic-map-layout { display: grid; grid-template-columns: minmax(0, 1fr) 318px; border: 1px solid #d4d0c7; background: #fff; box-shadow: 0 24px 70px rgba(18,34,43,.09); }
.map-viewport { min-width: 0; overflow-x: auto; overflow-y: hidden; scrollbar-width: thin; scrollbar-color: #b9b5ad transparent; background-color: #f8f6f0; background-image: linear-gradient(rgba(15,45,63,.045) 1px, transparent 1px), linear-gradient(90deg, rgba(15,45,63,.045) 1px, transparent 1px); background-size: 32px 32px; }
.topic-map-stage { position: relative; min-width: 820px; aspect-ratio: 1000 / 620; isolation: isolate; }
.topic-map-lines { position: absolute; z-index: 0; inset: 0; width: 100%; height: 100%; overflow: visible; }
.topic-map-lines line { vector-effect: non-scaling-stroke; stroke: rgba(41,114,122,.22); stroke-width: 1; transition: stroke .25s, stroke-width .25s, opacity .25s; }
.topic-map-lines .cross-links line { stroke: rgba(242,165,26,.16); stroke-dasharray: 5 5; }
.topic-map-lines line.muted { opacity: .1; }
.topic-map-lines line.highlight { opacity: 1; stroke: #e89a12; stroke-width: 2; stroke-dasharray: none; }
.topic-map-core { position: absolute; z-index: 2; left: 50%; top: 50%; width: 148px; height: 148px; display: grid; place-content: center; justify-items: center; color: #fff; border: 7px solid rgba(105,215,208,.13); border-radius: 50%; background: var(--navy); box-shadow: 0 15px 45px rgba(5,24,37,.25); transform: translate(-50%,-50%); }
.topic-map-core::after { content: ""; position: absolute; inset: -20px; border: 1px dashed rgba(24,122,125,.27); border-radius: 50%; }
.topic-map-core small { color: var(--teal); font-size: 9px; letter-spacing: .14em; }
.topic-map-core strong { margin-top: 2px; font-size: 22px; }
.topic-map-core span { margin-top: 7px; color: #7f939d; font-size: 8px; }
.topic-node { position: absolute; z-index: 3; left: var(--x); top: var(--y); width: 128px; min-height: 70px; padding: 11px 13px 10px; display: grid; grid-template-columns: 27px 1fr; align-items: center; color: var(--ink); border: 1px solid #d2cec5; background: rgba(255,255,255,.94); text-align: left; box-shadow: 0 8px 22px rgba(18,34,43,.08); cursor: pointer; transform: translate(-50%,-50%); transition: border .2s, box-shadow .2s, transform .2s, opacity .2s; }
.topic-node::before { content: ""; position: absolute; inset: 0 auto 0 0; width: 3px; background: var(--node-color); }
.topic-node:hover, .topic-node.active { z-index: 4; border-color: var(--node-color); box-shadow: 0 13px 30px rgba(18,34,43,.16); transform: translate(-50%,-50%) scale(1.05); }
.topic-node.muted { opacity: .36; }
.topic-node b { grid-row: 1 / 3; color: var(--node-color); font: 11px/1 monospace; }
.topic-node span { font-size: 13px; font-weight: 850; line-height: 1.3; }
.topic-node small { color: #87949a; font-size: 8px; letter-spacing: .04em; }
.topic-node.node-adapt, .map-stage-legend i.node-adapt { --node-color: #e39717; }
.topic-node.node-opportunity, .map-stage-legend i.node-opportunity { --node-color: #199a98; }
.topic-node.node-outcome, .map-stage-legend i.node-outcome { --node-color: #2c72c7; }
.map-stage-legend { position: absolute; z-index: 2; left: 22px; bottom: 17px; display: flex; gap: 18px; color: #76868e; font-size: 8px; }
.map-stage-legend span { display: flex; align-items: center; gap: 6px; }
.map-stage-legend i { width: 7px; height: 7px; border-radius: 50%; background: var(--node-color); }
.topic-inspector { min-width: 0; border-left: 1px solid #d4d0c7; background: #f2eee5; }
.topic-inspector-kicker { margin: 0; padding: 18px 20px; color: #2a8f8b; border-bottom: 1px solid #d4d0c7; font-size: 8px; font-weight: 800; letter-spacing: .15em; }
.topic-inspector > img { width: 100%; height: 165px; object-fit: cover; }
.topic-inspector-body { padding: 23px 22px 25px; }
.topic-inspector-body > small { color: #a26000; font-size: 9px; font-weight: 800; letter-spacing: .1em; }
.topic-inspector h3 { margin: 7px 0 9px; font-size: 23px; line-height: 1.3; letter-spacing: -.035em; }
.topic-inspector-body > p { min-height: 67px; margin: 0; color: var(--ink-muted); font-size: 12px; }
.topic-relations { margin: 18px 0 21px; display: flex; flex-wrap: wrap; gap: 6px; }
.topic-relations b { width: 100%; margin-bottom: 3px; color: #718089; font-size: 9px; letter-spacing: .1em; }
.topic-relations span { padding: 4px 8px; color: #34636a; border: 1px solid #bfd2cf; background: #edf6f4; font-size: 9px; }
.topic-map-preview, .topic-guide-link { width: 100%; min-height: 40px; display: flex; align-items: center; justify-content: center; border: 0; font-size: 10px; font-weight: 800; cursor: pointer; }
.topic-map-preview { color: #fff; background: var(--navy); }
.topic-guide-link { margin-top: 7px; color: var(--ink); border: 1px solid #c8c3b9; background: transparent; }
.graph-entry { margin-top: 18px; padding: 27px 31px; display: grid; grid-template-columns: 1fr auto; gap: 40px; align-items: center; color: #fff; background: var(--navy); }
.graph-entry small, .graph-entry strong { display: block; }
.graph-entry small { color: var(--teal); font-size: 8px; font-weight: 800; letter-spacing: .17em; }
.graph-entry strong { margin-top: 6px; font-size: 19px; }
.graph-entry p { margin: 5px 0 0; color: #82959e; font-size: 11px; }
.graph-entry .button { white-space: nowrap; }

.community-section { background: var(--navy-2); }
.community-layout { display: grid; grid-template-columns: 1.05fr .95fr; gap: 60px; align-items: start; }
.community-photo { position: relative; min-height: 580px; overflow: hidden; cursor: zoom-in; }
.community-photo::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 40%, rgba(4,15,25,.96)); }
.community-photo img { width: 100%; height: 580px; object-fit: cover; }
.community-photo > div { position: absolute; z-index: 2; left: 36px; right: 36px; bottom: 32px; }
.community-photo span { color: var(--orange); font-size: 9px; font-weight: 800; letter-spacing: .18em; }
.community-photo strong { display: block; margin-top: 9px; font-size: 24px; }
.community-photo p { max-width: 450px; margin: 7px 0 0; color: #afbec4; font-size: 13px; }
.community-features { border-top: 1px solid var(--line); }
.community-features article { display: grid; grid-template-columns: 48px 1fr; gap: 20px; padding: 29px 5px; border-bottom: 1px solid var(--line); }
.community-features article > b { color: var(--orange); font: 12px/1 monospace; }
.community-features h3 { margin: -3px 0 6px; font-size: 19px; }
.community-features p { margin: 0; color: #91a4ad; font-size: 13px; }
.community-quote { margin-top: 85px; padding: 37px 45px; display: flex; align-items: flex-start; gap: 28px; border: 1px solid var(--line); background: rgba(105,215,208,.035); }
.community-quote > span { color: var(--orange); font: 80px/.8 Georgia, serif; }
.community-quote p { margin: 0; color: #94a7af; font-size: 18px; }
.community-quote strong { color: #fff; font-size: 28px; }
.provider-card { margin-top: 18px; padding: 25px 28px; display: grid; grid-template-columns: 55px 1fr auto; gap: 22px; align-items: center; color: #fff; border: 1px solid var(--line); background: #071a29; }
.provider-card img { width: 55px; height: 55px; object-fit: contain; }
.provider-card div { display: grid; }
.provider-card small { color: var(--teal); font-size: 8px; font-weight: 800; letter-spacing: .15em; }
.provider-card strong { margin-top: 3px; font-size: 17px; }
.provider-card p { margin: 2px 0 0; color: #8599a2; font-size: 11px; }
.provider-card > a { padding: 9px 13px; color: var(--orange); border: 1px solid rgba(242,165,26,.3); font-size: 10px; font-weight: 800; }

.ai-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.ai-feature { min-height: 295px; padding: 34px; display: flex; flex-direction: column; border: 1px solid #cfcbc1; background: rgba(255,255,255,.45); }
.ai-feature h3 { margin: 13px 0 10px; font-size: 24px; }
.ai-feature p { margin: 0; color: var(--ink-muted); font-size: 14px; }
.ai-feature button { margin-top: auto; }
.ai-feature-large { grid-column: 1 / -1; min-height: 410px; padding: 0; display: grid; grid-template-columns: .85fr 1.15fr; overflow: hidden; color: #fff; border: 0; background: var(--navy); }
.ai-feature-large > div { padding: 50px; display: flex; flex-direction: column; }
.ai-feature-large h3 { font-size: 37px; }
.ai-feature-large p { color: #9babb2; font-size: 15px; }
.ai-feature-large img { width: 100%; height: 410px; object-fit: cover; object-position: top; }
.ai-feature-large button { color: var(--orange); border-color: rgba(242,165,26,.45); }

.journey-section { padding: 115px 0 125px; text-align: center; }
.journey-section .eyebrow { justify-content: center; }
.journey-section h2 { margin: 0 0 60px; font-size: clamp(34px, 4vw, 55px); letter-spacing: -.055em; }
.journey { display: grid; grid-template-columns: repeat(6, 1fr); margin: 0; padding: 0; list-style: none; }
.journey li { position: relative; min-height: 120px; padding: 17px 5px; display: grid; justify-items: center; align-content: start; border-top: 1px solid #cbc7be; }
.journey li::before { content: ""; position: absolute; top: -5px; width: 9px; height: 9px; border-radius: 50%; background: var(--orange); }
.journey li:not(:last-child)::after { content: "→"; position: absolute; top: 36px; right: -5px; color: #aaa59b; }
.journey b { color: #9c5d00; font-size: 11px; }
.journey span { margin-top: 14px; font-size: 15px; font-weight: 800; }

.fit-section { padding: 125px 0; background: #05141f; }
.fit-layout { display: grid; grid-template-columns: .78fr 1.22fr; gap: 100px; align-items: start; }
.fit-layout header { position: sticky; top: 115px; }
.fit-layout h2 { margin: 0; font-size: clamp(38px, 4vw, 58px); line-height: 1.18; letter-spacing: -.055em; }
.fit-layout header > p:last-child { max-width: 460px; margin: 24px 0 0; color: #8da0a9; font-size: 14px; }
.fit-list { border-top: 1px solid var(--line); }
.fit-list article { min-height: 94px; padding: 23px 5px; display: grid; grid-template-columns: 50px 1fr; gap: 18px; align-items: center; border-bottom: 1px solid var(--line); }
.fit-list b { color: var(--orange); font: 11px/1 monospace; }
.fit-list p { margin: 0; color: #d3dcdf; font-size: 16px; }
.fit-early { padding-top: 110px; }
.proof-strip { margin-top: 35px; display: grid; grid-template-columns: 1.65fr repeat(3, .55fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.proof-strip > div { min-height: 100px; padding: 20px 23px; display: flex; align-items: center; gap: 12px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.proof-brand img { width: 45px; height: 45px; object-fit: contain; }
.proof-brand span { display: grid; }
.proof-brand small { color: var(--teal); font-size: 8px; font-weight: 800; letter-spacing: .14em; }
.proof-brand strong { margin-top: 4px; color: #fff; font-size: 14px; }
.proof-strip > div:not(.proof-brand) { justify-content: center; }
.proof-strip > div:not(.proof-brand) strong { color: var(--orange); font-size: 28px; }
.proof-strip > div:not(.proof-brand) span { color: #90a2aa; font-size: 10px; }
.onboarding-topline { grid-template-columns: minmax(0, 870px); }

.join-section { padding: 120px 0; color: var(--navy); background: var(--orange); }
.join-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 110px; align-items: center; }
.join-section .eyebrow { color: var(--navy); }
.join-section .eyebrow span { background: var(--navy); }
.join-copy h2 { margin: 0; font-size: clamp(39px, 4.5vw, 64px); line-height: 1.18; letter-spacing: -.06em; }
.join-copy ul { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px 25px; margin: 37px 0 0; padding: 0; list-style: none; font-size: 13px; font-weight: 700; }
.join-copy li::before { content: "✓"; margin-right: 9px; }
.delivery-note { margin-top: 30px; padding-top: 19px; display: grid; grid-template-columns: auto 1fr; gap: 13px; border-top: 1px solid rgba(6,23,37,.25); font-size: 11px; }
.delivery-note b { white-space: nowrap; }
.delivery-note span { color: #4f4a38; }
.price-card { padding: 38px 40px; color: #fff; background: var(--navy); box-shadow: var(--shadow); }
.price-label { color: var(--teal); font-size: 9px; font-weight: 800; letter-spacing: .2em; }
.price { margin-top: 20px; display: flex; align-items: baseline; gap: 6px; }
.price small { color: var(--orange); font-size: 24px; }
.price strong { font-size: 76px; line-height: 1; letter-spacing: -.07em; }
.price del { margin-left: 9px; color: #6f828c; font-size: 15px; }
.price-card > p { margin: 16px 0 28px; color: #94a5ac; font-size: 12px; }
.button-ink { width: 100%; color: var(--navy); background: var(--orange); }
.price-note { display: block; margin-top: 16px; color: #748993; text-align: center; }

.faq-layout { display: grid; grid-template-columns: .68fr 1.32fr; gap: 100px; align-items: start; }
.faq-layout header { position: sticky; top: 115px; }
.faq-layout h2 { margin: 0; font-size: clamp(37px, 4vw, 58px); line-height: 1.2; letter-spacing: -.055em; }
.faq-list { border-top: 1px solid #bbb8b0; }
.faq-item { border-bottom: 1px solid #bbb8b0; }
.faq-item > button { width: 100%; padding: 27px 4px; display: flex; align-items: center; justify-content: space-between; color: var(--ink); border: 0; background: transparent; text-align: left; font-size: 17px; font-weight: 750; cursor: pointer; }
.faq-item i { color: #9b600a; font-size: 22px; font-style: normal; font-weight: 400; transition: transform .25s; }
.faq-item > div { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .3s ease; }
.faq-item > div p { min-height: 0; margin: 0; overflow: hidden; color: var(--ink-muted); font-size: 14px; }
.faq-item.open > div { grid-template-rows: 1fr; }
.faq-item.open > div p { padding: 0 42px 28px 4px; }
.faq-item.open i { transform: rotate(45deg); }

.site-footer { padding: 58px 0; color: #83959d; background: #020d15; }
.site-footer .site-shell { display: grid; grid-template-columns: 1fr auto auto; align-items: center; gap: 40px; }
.footer-brand { color: #fff; }
.site-footer p, .site-footer > small { margin: 0; font-size: 11px; }
.sticky-offer { position: fixed; z-index: 850; left: 50%; bottom: 18px; width: min(820px, calc(100% - 40px)); min-height: 70px; padding: 8px 9px 8px 14px; display: grid; grid-template-columns: auto 1fr auto auto; gap: 17px; align-items: center; color: #fff; border: 1px solid rgba(105,215,208,.22); background: rgba(5,21,33,.96); box-shadow: 0 18px 50px rgba(0,0,0,.35); backdrop-filter: blur(16px); opacity: 0; pointer-events: none; transform: translate(-50%, 120px); transition: opacity .25s, transform .3s; }
.sticky-offer.is-visible { opacity: 1; pointer-events: auto; transform: translate(-50%, 0); }
.sticky-service { display: flex; align-items: center; gap: 7px; color: #aab9bf; }
.sticky-service > span { width: 29px; height: 29px; display: grid; place-items: center; border: 1px solid #46606a; border-radius: 50%; font-size: 11px; font-weight: 900; }
.sticky-service small { font-size: 9px; }
.sticky-copy { display: grid; padding-left: 16px; border-left: 1px solid rgba(255,255,255,.1); }
.sticky-copy strong { font-size: 13px; }
.sticky-copy small { color: #78909a; font-size: 9px; }
.sticky-price { display: flex; align-items: baseline; gap: 7px; }
.sticky-price del { color: #607680; font-size: 10px; }
.sticky-price b { color: var(--orange); font-size: 27px; line-height: 1; }
.sticky-price b small { font-size: 12px; }
.sticky-action { min-height: 52px; padding: 0 19px; display: inline-flex; align-items: center; gap: 20px; color: var(--navy); background: var(--orange); font-size: 11px; font-weight: 900; white-space: nowrap; }

.contact-dialog { width: min(760px, calc(100% - 36px)); max-height: min(880px, calc(100vh - 36px)); padding: 43px; color: #fff; border: 1px solid var(--line); background: var(--navy-2); box-shadow: var(--shadow); overflow: auto; }
.contact-dialog::backdrop { background: rgba(1,9,15,.8); backdrop-filter: blur(8px); }
.contact-dialog h2 { margin: 0 0 14px; font-size: 29px; }
.contact-dialog > p:not(.eyebrow) { color: #9babb2; font-size: 14px; }
.dialog-close { position: absolute; top: 15px; right: 17px; color: #fff; border: 0; background: transparent; font-size: 25px; cursor: pointer; }
.dialog-confirm { margin-top: 18px; }
.join-contact-layout { margin-top: 25px; display: grid; grid-template-columns: 285px 1fr; gap: 28px; align-items: center; }
.join-contact-layout > img { width: 100%; max-height: 430px; object-fit: contain; object-position: top; background: #fff; }
.join-contact-layout strong { font-size: 20px; }
.join-contact-layout p { margin: 10px 0 18px; color: #9babb2; font-size: 13px; }
.join-contact-layout ul { margin: 0; padding: 0; display: grid; gap: 9px; list-style: none; color: #c9d3d6; font-size: 12px; }
.join-contact-layout li::before { content: "✓"; margin-right: 8px; color: var(--orange); }

.lightbox { position: fixed; z-index: 1200; inset: 0; padding: 70px 24px 35px; display: none; color: #fff; background: rgba(1,9,15,.96); }
.lightbox.open { display: flex; flex-direction: column; align-items: center; }
.lightbox-stage { width: min(1200px, 100%); flex: 1; overflow: auto; text-align: center; }
.lightbox-stage img { width: auto; max-width: 100%; margin: 0 auto; }
.lightbox-close { position: fixed; z-index: 2; top: 20px; right: 25px; width: 42px; height: 42px; color: #fff; border: 1px solid rgba(255,255,255,.2); border-radius: 50%; background: rgba(255,255,255,.05); font-size: 25px; cursor: pointer; }
.lightbox > p { margin: 14px 0 0; color: #81939c; font-size: 10px; letter-spacing: .1em; }

/* Unified dark canvas */
body, .section-paper, .section-light, .hero, .offer-overview, .system-section, .live-section, .library-section, .community-section, .ai-section, .journey-section, .fit-section, .join-section, .faq-section, .site-footer { color: var(--white); background: var(--navy); }
main > section { border-top: 1px solid rgba(105,215,208,.12); }
.heading-ink h2, .course-list h3, .ai-feature h3, .journey-section h2, .faq-layout h2 { color: var(--white); }
.heading-ink > p, .course-list p, .ai-feature p, .faq-item > div p { color: #91a4ad; }

.course-list { border-color: var(--line); }
.course-list li { border-color: var(--line); }
.day { border-color: rgba(105,215,208,.28); }
.course-list a { color: var(--orange-light); }
.course-actions > span { color: var(--teal); border-color: rgba(105,215,208,.28); background: rgba(105,215,208,.06); }

.topic-map-layout { border-color: var(--line); background: var(--navy-2); box-shadow: none; }
.map-viewport { background-color: #081d2c; background-image: linear-gradient(rgba(105,215,208,.055) 1px, transparent 1px), linear-gradient(90deg, rgba(105,215,208,.055) 1px, transparent 1px); }
.topic-map-lines line { stroke: rgba(105,215,208,.24); }
.topic-map-lines .cross-links line { stroke: rgba(242,165,26,.22); }
.topic-map-core { background: var(--navy-3); }
.topic-node { color: #f5f8f8; border-color: rgba(105,215,208,.23); background: rgba(10,33,50,.96); box-shadow: 0 8px 22px rgba(0,0,0,.2); }
.topic-node small, .map-stage-legend { color: #82969f; }
.topic-inspector { border-color: var(--line); background: var(--navy-2); }
.topic-inspector-kicker { border-color: var(--line); }
.topic-inspector h3 { color: #fff; }
.topic-inspector-body > p { color: #91a4ad; }
.topic-relations b { color: #82969f; }
.topic-relations span { color: var(--teal); border-color: rgba(105,215,208,.24); background: rgba(105,215,208,.06); }
.topic-map-preview { color: var(--navy); background: var(--orange); }
.topic-guide-link { color: #fff; border-color: rgba(255,255,255,.18); }
.graph-entry { border: 1px solid var(--line); background: var(--navy-2); }
.content-note { color: #91a4ad; background: var(--navy-2); }
.content-note b { color: #fff; }

.ai-feature { color: #fff; border-color: var(--line); background: var(--navy-2); }
.ai-feature-large { background: var(--navy-2); }
.ai-feature button { color: var(--orange-light); border-color: rgba(242,165,26,.45); }
.journey li { border-color: rgba(105,215,208,.25); }
.journey b { color: var(--orange); }
.journey li:not(:last-child)::after { color: #607884; }

.join-section .eyebrow { color: var(--teal); }
.join-section .eyebrow span { background: var(--orange); }
.join-copy h2 { color: #fff; }
.delivery-note { border-color: rgba(105,215,208,.24); }
.delivery-note span { color: #91a4ad; }
.price-card { border: 1px solid var(--line); background: var(--navy-2); }

.faq-list, .faq-item { border-color: rgba(105,215,208,.24); }
.faq-item > button { color: #fff; }
.faq-item i { color: var(--orange); }
.site-footer { border-top: 1px solid rgba(105,215,208,.16); }

.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

@media (max-width: 1100px) {
  .site-shell { width: min(var(--max), calc(100% - 48px)); }
  .site-header { padding-inline: 24px; }
  .main-nav { gap: 16px; }
  .main-nav a { font-size: 11px; }
  .hero-grid { gap: 45px; }
  .offer-topline { gap: 50px; }
  .access-flow { grid-template-columns: repeat(3, 1fr); }
  .system-grid { grid-template-columns: repeat(2, 1fr); }
  .resource-grid { grid-template-columns: repeat(2, 1fr); }
  .join-grid { gap: 60px; }
}

@media (max-width: 820px) {
  html { scroll-padding-top: 70px; }
  body { padding-bottom: 68px; }
  .site-shell { width: calc(100% - 36px); }
  .site-header { min-height: 68px; padding-inline: 18px; }
  .brand img { width: 33px; height: 33px; }
  .brand b { font-size: 13px; }
  .header-cta { display: none; }
  .nav-toggle { display: block; }
  .nav-toggle[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:last-child { transform: translateY(-4px) rotate(-45deg); }
  .main-nav { position: fixed; inset: 68px 0 auto; padding: 20px 18px 30px; display: grid; gap: 0; border-bottom: 1px solid var(--line); background: rgba(6,23,37,.98); transform: translateY(-130%); transition: transform .3s; }
  .nav-open .main-nav { transform: none; }
  .main-nav a { padding: 14px 2px; border-bottom: 1px solid rgba(255,255,255,.06); font-size: 14px; }
  .main-nav a::after { display: none; }
  .hero { min-height: auto; padding: 118px 0 80px; }
  .hero-grid, .section-heading, .live-layout, .community-layout, .join-grid, .faq-layout, .offer-topline, .fit-layout { grid-template-columns: 1fr; }
  .hero-grid { gap: 65px; }
  .hero h1 { font-size: clamp(45px, 13vw, 72px); }
  .hero-lead { font-size: 15px; }
  .hero-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
  .hero-stats dt { font-size: 20px; }
  .hero-visual { min-height: 475px; padding-right: 18px; }
  .brand-hero-card { height: 430px; }
  .route-ticket { right: 0; }
  .hero-scroll { display: none; }
  .section-heading { gap: 20px; margin-bottom: 48px; }
  .section-heading > p { max-width: 650px; }
  .offer-overview, .system-section, .live-section, .library-section, .community-section, .ai-section, .fit-section, .faq-section { padding: 90px 0; }
  .offer-topline { gap: 42px; }
  .offer-price-card { width: min(480px, 100%); }
  .live-poster, .faq-layout header { position: static; }
  .live-poster { width: min(100%, 560px); margin-inline: auto; }
  .live-layout { gap: 50px; }
  .community-photo, .community-photo img { min-height: 480px; height: 480px; }
  .topic-map-layout { grid-template-columns: 1fr; }
  .topic-inspector { display: grid; grid-template-columns: 220px 1fr; border-top: 1px solid #d4d0c7; border-left: 0; }
  .topic-inspector-kicker { position: absolute; opacity: 0; pointer-events: none; }
  .topic-inspector > img { height: 100%; min-height: 270px; }
  .topic-inspector-body > p { min-height: auto; }
  .ai-feature-large { grid-template-columns: 1fr; }
  .ai-feature-large img { height: 300px; }
  .journey { grid-template-columns: repeat(3, 1fr); row-gap: 35px; }
  .journey li:nth-child(3)::after { display: none; }
  .fit-layout { gap: 48px; }
  .fit-layout header { position: static; }
  .proof-strip { grid-template-columns: repeat(3, 1fr); }
  .proof-brand { grid-column: 1 / -1; }
  .join-copy ul { grid-template-columns: 1fr; }
  .faq-layout { gap: 50px; }
  .site-footer .site-shell { grid-template-columns: 1fr; gap: 15px; }
  .sticky-offer { left: 0; bottom: 0; width: 100%; min-height: 68px; padding: 8px 10px 8px 16px; grid-template-columns: 1fr auto auto; gap: 12px; border-right: 0; border-bottom: 0; border-left: 0; transform: translateY(90px); }
  .sticky-offer.is-visible { transform: none; }
  .sticky-service, .sticky-copy small, .sticky-price del { display: none; }
  .sticky-copy { padding-left: 0; border-left: 0; }
  .sticky-copy strong { font-size: 12px; }
  .sticky-price b { font-size: 23px; }
  .sticky-action { min-height: 50px; padding: 0 15px; }
}

@media (max-width: 560px) {
  .hero { padding-top: 105px; }
  .hero-kicker { font-size: 9px; }
  .hero h1 { font-size: 45px; }
  .hero-actions { display: grid; }
  .button { width: 100%; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 22px; }
  .hero-visual { min-height: 390px; padding: 0 10px 42px 0; }
  .brand-hero-card { height: 365px; padding: 29px 27px 67px; }
  .brand-hero-mark img { width: 67px; height: 67px; }
  .brand-hero-mark strong { font-size: 20px; }
  .brand-motto { padding-top: 18px; }
  .brand-motto p { font-size: 25px; }
  .brand-card-foot span { display: none; }
  .route-ticket { padding: 17px; }
  .route-line i { font-size: 10px; }
  .section-heading h2 { font-size: 38px; }
  .system-grid, .resource-grid, .ai-grid { grid-template-columns: 1fr; }
  .offer-copy h2 { font-size: 38px; }
  .offer-meta { display: grid; grid-template-columns: repeat(2, 1fr); }
  .offer-meta span { display: grid; }
  .offer-price-card { padding: 31px 26px 27px; }
  .access-flow { grid-template-columns: 1fr; margin-top: 42px; }
  .access-flow li { min-height: 120px; }
  .access-flow li:not(:last-child)::after { content: "↓"; top: auto; right: 24px; bottom: -10px; transform: none; }
  .system-card { min-height: 320px; }
  .library-filter { overflow-x: auto; margin-top: -12px; padding-bottom: 5px; }
  .library-filter button { white-space: nowrap; }
  .resource-card > img { height: 175px; }
  .topic-map-stage { min-width: 780px; }
  .map-viewport::after { content: "左右滑动查看完整图谱 →"; position: sticky; left: 17px; bottom: 10px; padding: 5px 8px; color: #9aadb5; background: rgba(6,23,37,.88); font-size: 8px; }
  .topic-inspector { display: block; }
  .topic-inspector > img { height: 180px; min-height: 0; }
  .graph-entry { grid-template-columns: 1fr; gap: 19px; padding: 25px 22px; }
  .community-photo, .community-photo img { min-height: 430px; height: 430px; }
  .community-photo > div { left: 24px; right: 24px; bottom: 25px; }
  .community-quote { padding: 29px 23px; gap: 12px; }
  .community-quote p { font-size: 15px; }
  .community-quote strong { font-size: 21px; }
  .provider-card { grid-template-columns: 45px 1fr; padding: 21px; }
  .provider-card img { width: 45px; height: 45px; }
  .provider-card > a { grid-column: 1 / -1; text-align: center; }
  .ai-feature-large { grid-column: auto; }
  .ai-feature-large > div { padding: 34px; }
  .ai-feature-large h3 { font-size: 29px; }
  .journey-section { padding: 85px 0; }
  .journey-section h2 { font-size: 37px; }
  .journey { grid-template-columns: repeat(2, 1fr); }
  .journey li:nth-child(3)::after { display: block; }
  .journey li:nth-child(2n)::after { display: none; }
  .fit-list article { grid-template-columns: 38px 1fr; }
  .fit-list p { font-size: 14px; }
  .proof-strip { grid-template-columns: 1fr 1fr; }
  .proof-brand { grid-column: 1 / -1; }
  .proof-strip > div:nth-child(4) { grid-column: 1 / -1; }
  .join-section { padding: 85px 0; }
  .price-card { padding: 32px 25px; }
  .price strong { font-size: 67px; }
  .faq-item > button { font-size: 15px; }
  .contact-dialog { padding: 42px 26px 30px; }
  .join-contact-layout { grid-template-columns: 1fr; }
  .join-contact-layout > img { width: min(300px, 100%); max-height: 48vh; margin: 0 auto; }
  .sticky-copy { display: none; }
  .sticky-offer { grid-template-columns: 1fr auto; }
  .sticky-price { padding-left: 5px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}