/* AI少年创造日: warm editorial layout with a focused conversion path. */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif; font-size: 16px; line-height: 1.75; color: #1b1b1b; background: #fbfaf7; -webkit-font-smoothing: antialiased; overflow-x: hidden; }
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
img { display: block; max-width: 100%; }

:root {
  --paper: #fbfaf7;
  --warm: #f0ece3;
  --warm-deep: #e7dfd1;
  --ink: #16191c;
  --ink-soft: #24282d;
  --text: #202124;
  --muted: #6b6f72;
  --muted-light: #a5a6a3;
  --line: #dad5ca;
  --gold: #b8892a;
  --gold-dark: #8c671f;
  --gold-light: #e8d8ad;
  --serif: 'Noto Serif SC', Georgia, serif;
  --mono: 'JetBrains Mono', 'SFMono-Regular', Menlo, monospace;
  --ease: 260ms cubic-bezier(.2,.65,.2,1);
  --shadow: 0 20px 60px rgba(37, 30, 18, .08);
}

.container { width: min(1160px, calc(100% - 48px)); margin: 0 auto; }
.section { position: relative; padding: 128px 0; }
.bg-warm { background: var(--warm); }
.bg-ink { color: #f7f4ed; background: var(--ink); }
.light { color: var(--gold-light); }
.section-intro { max-width: 760px; margin-bottom: 64px; }
.section-intro h2, .definition-title h2, .outcome-copy h2, .teacher-copy h2, .contact-copy h2 { font-family: var(--serif); font-size: clamp(2rem, 4vw, 3.35rem); font-weight: 600; line-height: 1.35; letter-spacing: -.02em; }
.section-intro h2 em, .definition-title h2 em, .outcome-copy h2 em, .teacher-copy h2 em, .contact-copy h2 em, .hero h1 em { color: var(--gold); font-style: normal; }
.section-kicker { margin-bottom: 18px; color: var(--gold-dark); font-family: var(--mono); font-size: .7rem; font-weight: 500; letter-spacing: .16em; text-transform: uppercase; }
.section-kicker.light { color: var(--gold-light); }
.section-desc { max-width: 620px; margin-top: 22px; color: var(--muted); font-size: 1.03rem; line-height: 1.95; }
.bg-ink .section-desc, .bg-ink p { color: rgba(247,244,237,.68); }

/* Navigation */
.nav { position: fixed; z-index: 20; top: 0; left: 0; right: 0; height: 72px; border-bottom: 1px solid transparent; transition: background var(--ease), border-color var(--ease), box-shadow var(--ease); }
.nav.scrolled { background: rgba(251,250,247,.92); border-color: rgba(216,211,201,.85); box-shadow: 0 6px 24px rgba(44,36,24,.04); backdrop-filter: blur(14px); }
.nav-inner { display: flex; align-items: center; gap: 30px; width: min(1160px, calc(100% - 48px)); height: 100%; margin: 0 auto; }
.nav-logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; font-family: var(--serif); font-size: .94rem; font-weight: 700; letter-spacing: .04em; }
.nav-logo img { width: 32px; height: 32px; object-fit: contain; border-radius: 4px; }
.nav-links { display: flex; gap: 27px; margin-left: auto; }
.nav-links a { position: relative; color: rgba(251,250,247,.72); font-size: .82rem; transition: color var(--ease); }
.nav.scrolled .nav-links a { color: var(--muted); }
.nav-links a::after { position: absolute; right: 0; bottom: -6px; left: 0; height: 1px; background: var(--gold); content: ''; transform: scaleX(0); transform-origin: left; transition: transform var(--ease); }
.nav-links a:hover, .nav.scrolled .nav-links a:hover { color: var(--gold); }
.nav-links a:hover::after { transform: scaleX(1); }
.nav-cta { flex-shrink: 0; padding: 8px 16px; border: 1px solid rgba(232,216,173,.65); border-radius: 2px; color: var(--gold-light); font-size: .78rem; transition: background var(--ease), color var(--ease); }
.nav.scrolled .nav-cta { border-color: var(--gold); color: var(--gold-dark); }
.nav-cta:hover { background: var(--gold); color: #fff; }
.nav-toggle { display: none; width: 38px; height: 38px; border: 0; background: transparent; }
.nav-toggle span { display: block; width: 22px; height: 1px; margin: 5px auto; background: currentColor; transition: transform var(--ease), opacity var(--ease); }

/* Hero */
.hero { position: relative; min-height: 760px; padding: 170px 0 90px; overflow: hidden; color: #f7f4ed; background: var(--ink); }
.hero::before { position: absolute; top: -30%; right: -15%; width: 800px; height: 800px; border: 1px solid rgba(184,137,42,.16); border-radius: 50%; content: ''; }
.hero::after { position: absolute; right: 8%; bottom: -370px; width: 720px; height: 720px; border: 1px solid rgba(184,137,42,.09); border-radius: 50%; content: ''; }
.hero-orbit { position: absolute; border: 1px solid rgba(232,216,173,.11); border-radius: 50%; pointer-events: none; }
.orbit-one { top: 20%; right: 16%; width: 340px; height: 340px; }
.orbit-two { top: 30%; right: 23%; width: 200px; height: 200px; border-color: rgba(232,216,173,.08); }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1.18fr) minmax(310px, .82fr); align-items: center; gap: 90px; }
.hero-copy { max-width: 700px; }
.eyebrow, .hero-label { font-family: var(--mono); font-size: .72rem; letter-spacing: .13em; }
.eyebrow { margin-bottom: 28px; color: var(--gold-light); }
.hero-label { margin-bottom: 18px; color: var(--gold); }
.hero h1 { max-width: 720px; font-family: var(--serif); font-size: clamp(2.8rem, 5.5vw, 5.3rem); font-weight: 600; line-height: 1.22; letter-spacing: -.05em; }
.hero-lead { max-width: 620px; margin-top: 28px; color: rgba(247,244,237,.7); font-size: 1.08rem; line-height: 2; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 38px; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 50px; padding: 13px 22px; border: 1px solid transparent; border-radius: 2px; font-size: .92rem; font-weight: 600; transition: transform var(--ease), background var(--ease), border-color var(--ease), color var(--ease), box-shadow var(--ease); }
.btn:hover { transform: translateY(-2px); }
.btn-gold { background: var(--gold); color: #fff; box-shadow: 0 8px 24px rgba(184,137,42,.22); }
.btn-gold:hover { background: var(--gold-dark); box-shadow: 0 11px 28px rgba(184,137,42,.3); }
.btn-line { border-color: rgba(247,244,237,.3); color: rgba(247,244,237,.87); }
.btn-line:hover { border-color: var(--gold-light); color: var(--gold-light); }
.hero-note { margin-top: 16px; color: rgba(247,244,237,.4); font-size: .78rem; }
.hero-proof { position: relative; justify-self: end; width: min(100%, 360px); padding: 36px 32px 34px; border: 1px solid rgba(232,216,173,.3); background: rgba(255,255,255,.045); }
.hero-proof::before { position: absolute; top: 14px; right: 14px; width: 6px; height: 6px; background: var(--gold); content: ''; }
.proof-head { display: flex; align-items: center; gap: 9px; color: var(--gold-light); font-family: var(--mono); font-size: .64rem; letter-spacing: .1em; }
.proof-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--gold); }
.proof-title { margin: 54px 0 26px; font-family: var(--serif); font-size: 2.6rem; line-height: 1.25; }
.proof-title strong { color: var(--gold-light); font-weight: 600; }
.proof-line { width: 100%; height: 1px; background: rgba(232,216,173,.24); }
.proof-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; padding: 22px 0; }
.proof-metrics > div { border-right: 1px solid rgba(232,216,173,.18); }
.proof-metrics > div:last-child { border-right: 0; }
.proof-metrics b { display: block; color: var(--gold-light); font-family: var(--serif); font-size: 1.45rem; line-height: 1.2; }
.proof-metrics b span { margin-left: 2px; font-family: var(--sans); font-size: .7rem; font-weight: 400; }
.proof-metrics small { display: block; margin-top: 4px; color: rgba(247,244,237,.45); font-size: .68rem; }
.hero-proof > p { color: rgba(247,244,237,.55); font-size: .85rem; line-height: 1.9; }
.hero-bottom { position: absolute; z-index: 1; right: 0; bottom: 30px; left: 0; display: flex; justify-content: space-between; width: min(1160px, calc(100% - 48px)); margin: auto; color: rgba(247,244,237,.36); font-family: var(--mono); font-size: .64rem; letter-spacing: .13em; }

/* Why */
.intro-section { background: var(--paper); }
.why-layout { display: grid; grid-template-columns: .82fr 1.18fr; gap: 76px; align-items: start; }
.why-statement { position: relative; padding: 34px 36px 38px; border-top: 2px solid var(--gold); background: var(--warm); }
.statement-mark { display: block; height: 40px; color: var(--gold); font-family: Georgia, serif; font-size: 5rem; line-height: .9; }
.why-statement p { font-family: var(--serif); font-size: 1.45rem; line-height: 1.7; }
.why-statement strong { color: var(--gold-dark); }
.why-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.why-card { min-height: 260px; padding: 24px 22px; border: 1px solid var(--line); background: #fff; transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease); }
.why-card:hover { border-color: var(--gold); box-shadow: var(--shadow); transform: translateY(-5px); }
.card-index, .module-no { color: var(--gold); font-family: var(--mono); font-size: .68rem; }
.why-card h3 { margin-top: 60px; font-family: var(--serif); font-size: 1.25rem; font-weight: 600; }
.why-card p { margin-top: 14px; color: var(--muted); font-size: .9rem; line-height: 1.85; }

/* Definition */
.definition-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 130px; align-items: center; }
.definition-title h2 { margin-top: 12px; font-size: clamp(2.8rem, 5vw, 4.8rem); color: #f7f4ed; line-height: 1.18; }
.definition-copy { max-width: 600px; }
.definition-lead { margin-bottom: 18px; color: #f7f4ed !important; font-family: var(--serif); font-size: 1.55rem; }
.definition-copy > p:not(.definition-lead) { font-size: 1rem; line-height: 2; }
.definition-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 44px; }
.definition-list > div { padding-top: 15px; border-top: 1px solid rgba(232,216,173,.36); }
.definition-list span { display: block; color: var(--gold); font-family: var(--mono); font-size: .67rem; }
.definition-list b { display: block; margin-top: 12px; color: #f7f4ed; font-size: .95rem; }
.definition-list small { display: block; margin-top: 4px; color: rgba(247,244,237,.5); font-size: .72rem; line-height: 1.7; }

/* Path */
.split-intro { display: grid; grid-template-columns: 1fr 1fr; gap: 90px; align-items: end; max-width: 940px; }
.split-intro .section-desc { margin: 0 0 5px; }
.pathway { display: grid; grid-template-columns: 1fr 38px 1fr 38px 1fr; align-items: center; gap: 14px; }
.path-card { min-height: 290px; padding: 28px 25px; border: 1px solid var(--line); background: #fff; transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease); }
.path-card:hover { border-color: var(--gold); box-shadow: var(--shadow); transform: translateY(-5px); }
.path-card-featured { border-color: var(--gold); box-shadow: 0 8px 30px rgba(184,137,42,.1); }
.path-top { display: flex; justify-content: space-between; padding-bottom: 18px; border-bottom: 1px solid var(--line); color: var(--gold-dark); font-family: var(--mono); font-size: .7rem; }
.path-time { color: var(--muted); }
.path-card h3 { margin-top: 30px; font-family: var(--serif); font-size: 1.55rem; }
.path-card p { margin-top: 13px; color: var(--muted); font-size: .9rem; line-height: 1.85; }
.path-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 26px; }
.path-tags span { padding: 3px 8px; border: 1px solid var(--line); color: var(--muted); font-size: .69rem; }
.path-connector { color: var(--gold); font-size: 1.5rem; text-align: center; }
.schedule-bar { display: flex; align-items: center; gap: 18px; margin-top: 32px; padding: 17px 20px; border: 1px solid var(--line); background: var(--warm); color: var(--muted); font-size: .86rem; }
.schedule-bar strong { color: var(--text); font-family: var(--serif); font-size: 1.15rem; font-weight: 600; }
.schedule-label { color: var(--gold-dark); font-family: var(--mono); font-size: .66rem; letter-spacing: .07em; }

/* Modules */
.module-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.module-card { position: relative; min-height: 280px; padding: 24px 22px; border: 1px solid #d5cdbf; background: rgba(255,255,255,.55); transition: transform var(--ease), background var(--ease); }
.module-card:hover { background: #fff; transform: translateY(-5px); }
.module-card-dark { border-color: var(--ink); color: #f7f4ed; background: var(--ink); }
.module-card-dark:hover { background: #24282d; }
.module-icon { margin-top: 48px; color: var(--gold); font-family: Georgia, serif; font-size: 2.5rem; line-height: 1; }
.module-card h3 { margin-top: 26px; font-family: var(--serif); font-size: 1.35rem; }
.module-card p { margin-top: 10px; color: var(--muted); font-size: .88rem; line-height: 1.85; }
.module-card-dark p { color: rgba(247,244,237,.62); }
.module-en { position: absolute; right: 22px; bottom: 22px; color: var(--gold-dark); font-family: var(--mono); font-size: .61rem; letter-spacing: .08em; }
.module-card-dark .module-en { color: var(--gold-light); }

/* Outcome */
.outcome-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 120px; align-items: center; }
.outcome-copy .text-link { display: inline-block; margin-top: 31px; border-bottom: 1px solid var(--gold); color: var(--gold-dark); font-size: .9rem; }
.outcome-list { border-top: 1px solid var(--line); }
.outcome-item { display: grid; grid-template-columns: 52px 1fr; gap: 16px; padding: 25px 0; border-bottom: 1px solid var(--line); }
.outcome-item > span { color: var(--gold); font-family: var(--mono); font-size: .67rem; }
.outcome-item h3 { font-family: var(--serif); font-size: 1.3rem; font-weight: 600; }
.outcome-item p { margin-top: 4px; color: var(--muted); font-size: .88rem; }

/* Showcase */
.showcase-section { border-top: 1px solid var(--line); }
.showcase-intro { display: grid; grid-template-columns: 1fr 1fr; gap: 90px; align-items: end; max-width: 960px; }
.showcase-intro .section-desc { margin: 0; }
.showcase-all-link { display: inline-block; margin-top: 22px; border-bottom: 1px solid var(--gold); color: var(--gold-dark); font-size: .88rem; }
.showcase-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.showcase-card { position: relative; display: flex; min-height: 250px; flex-direction: column; padding: 24px 23px 21px; border: 1px solid #d5cdbf; background: rgba(255,255,255,.78); transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease); }
.showcase-card:hover { border-color: var(--gold); box-shadow: var(--shadow); transform: translateY(-5px); }
.showcase-card-external { background: var(--ink); color: #f7f4ed; }
.showcase-card-external:hover { background: var(--ink-soft); }
.showcase-card-top { display: flex; justify-content: space-between; gap: 10px; color: var(--gold-dark); font-family: var(--mono); font-size: .62rem; line-height: 1.5; }
.showcase-card-external .showcase-card-top { color: var(--gold-light); }
.showcase-card h3 { margin-top: 38px; font-family: var(--serif); font-size: 1.25rem; font-weight: 600; line-height: 1.5; }
.showcase-card p { margin-top: 11px; color: var(--muted); font-size: .84rem; line-height: 1.8; }
.showcase-card-external p { color: rgba(247,244,237,.64); }
.showcase-link { display: inline-block; margin-top: auto; padding-top: 20px; color: var(--gold-dark); font-size: .78rem; }
.showcase-card-external .showcase-link { color: var(--gold-light); }
.showcase-link b { margin-left: 4px; font-size: 1rem; font-weight: 400; }
.showcase-note { display: flex; align-items: center; gap: 18px; margin-top: 28px; padding: 16px 20px; border: 1px solid #d5cdbf; color: var(--muted); font-size: .8rem; }
.showcase-note span:first-child { color: var(--gold-dark); font-family: var(--mono); font-size: .66rem; letter-spacing: .06em; }
.showcase-note a { margin-left: auto; color: var(--gold-dark); white-space: nowrap; }

/* Teacher */
.teacher-grid { display: grid; grid-template-columns: 360px 1fr; gap: 100px; align-items: center; }
.teacher-portrait { position: relative; padding: 14px 14px 0; border: 1px solid rgba(232,216,173,.3); }
.teacher-portrait img { width: 100%; aspect-ratio: 1 / 1.08; object-fit: cover; filter: saturate(.85); }
.teacher-portrait span { display: block; padding: 12px 0 10px; color: var(--gold-light); font-family: var(--mono); font-size: .62rem; letter-spacing: .12em; }
.teacher-copy { max-width: 700px; }
.teacher-copy h2 { color: #f7f4ed; }
.teacher-bio { margin-top: 27px; color: var(--gold-light) !important; font-size: 1.05rem; line-height: 1.9; }
.teacher-copy > p:not(.section-kicker):not(.teacher-bio) { max-width: 620px; margin-top: 17px; color: rgba(247,244,237,.67); line-height: 2; }
.teacher-cred { display: flex; align-items: baseline; gap: 10px 14px; margin-top: 35px; color: var(--gold-light); }
.teacher-cred span { font-family: var(--serif); font-size: 1.45rem; }
.teacher-cred small { margin-right: 18px; color: rgba(247,244,237,.48); font-size: .72rem; }

/* Details and price */
.details-layout { display: grid; grid-template-columns: 1.15fr .85fr; gap: 70px; align-items: start; }
.detail-table { border-top: 1px solid var(--line); }
.detail-table > div { display: grid; grid-template-columns: 100px 1fr; gap: 20px; padding: 23px 0; border-bottom: 1px solid var(--line); }
.detail-table span { color: var(--gold-dark); font-family: var(--mono); font-size: .72rem; }
.detail-table strong { font-family: var(--serif); font-size: 1.13rem; font-weight: 600; line-height: 1.6; }
.detail-table small { color: var(--muted); font-family: var(--sans); font-size: .78rem; font-weight: 400; }
.price-card { padding: 34px; border: 1px solid var(--gold); background: #fff; box-shadow: 0 18px 48px rgba(86,61,24,.11); }
.price-label { color: var(--gold-dark); font-family: var(--mono); font-size: .73rem; letter-spacing: .06em; }
.price { margin-top: 13px; color: var(--gold-dark); font-family: var(--serif); font-size: 3.8rem; font-weight: 600; line-height: 1; }
.price span { margin-right: 3px; font-family: var(--sans); font-size: 1.5rem; }
.price-origin { margin-top: 9px; color: var(--muted); font-size: .8rem; text-decoration: line-through; }
.price-rule { height: 1px; margin: 28px 0 22px; background: var(--line); }
.price-includes, .price-excludes { color: var(--muted); font-size: .83rem; line-height: 1.9; }
.price-excludes { margin-top: 12px; }
.price-includes b, .price-excludes b { display: block; color: var(--text); font-weight: 600; }
.btn-full { width: 100%; margin-top: 26px; }

/* FAQ */
.faq-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 100px; align-items: start; }
.faq-list { border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-q { display: flex; align-items: center; justify-content: space-between; width: 100%; padding: 22px 0; border: 0; color: var(--text); background: transparent; text-align: left; font-family: var(--serif); font-size: 1rem; }
.faq-q span { color: var(--gold); font-family: var(--sans); font-size: 1.4rem; font-weight: 300; transition: transform var(--ease); }
.faq-q[aria-expanded="true"] span { transform: rotate(45deg); }
.faq-a { display: grid; grid-template-rows: 0fr; transition: grid-template-rows var(--ease); }
.faq-a p { overflow: hidden; color: var(--muted); font-size: .9rem; line-height: 1.9; }
.faq-a.open { grid-template-rows: 1fr; }
.faq-a.open p { padding: 0 35px 22px 0; }

/* Contact and footer */
.contact-section { padding: 112px 0; color: #f7f4ed; background: var(--ink); }
.contact-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 90px; align-items: center; }
.contact-copy { max-width: 700px; }
.contact-copy h2 { color: #f7f4ed; }
.contact-copy > p:last-child { max-width: 500px; margin-top: 22px; color: rgba(247,244,237,.58); }
.contact-card { display: flex; align-items: center; justify-content: space-between; gap: 25px; padding: 26px; border: 1px solid rgba(232,216,173,.36); background: rgba(255,255,255,.04); }
.contact-label { color: var(--gold-light) !important; font-family: var(--mono); font-size: .7rem; letter-spacing: .08em; }
.contact-number { margin-top: 10px; color: #f7f4ed; font-family: var(--serif); font-size: 1.55rem; }
.contact-note { margin-top: 4px; color: rgba(247,244,237,.48) !important; font-size: .72rem; }
.contact-card img { width: 118px; height: 118px; padding: 6px; background: #fff; }
.footer { padding: 28px 0; color: rgba(247,244,237,.55); background: #101214; }
.footer-inner { display: grid; grid-template-columns: 1fr 1fr auto; align-items: center; gap: 25px; }
.footer strong, .footer span { display: block; }
.footer strong { color: var(--gold-light); font-family: var(--serif); font-size: 1rem; }
.footer span, .footer p, .footer small { font-size: .72rem; }
.footer p { text-align: center; }
.footer small { text-align: right; }

/* Motion */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 650ms ease, transform 650ms ease; }
.reveal.in-view { opacity: 1; transform: translateY(0); }
.reveal-delay { transition-delay: 90ms; }
.reveal-delay-2 { transition-delay: 180ms; }
.reveal-delay-3 { transition-delay: 270ms; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}

/* Responsive */
@media (max-width: 1024px) {
  .hero-grid { gap: 48px; }
  .definition-grid, .outcome-grid { gap: 70px; }
  .why-layout { gap: 40px; }
  .teacher-grid { gap: 65px; }
  .faq-grid { gap: 55px; }
}

@media (max-width: 820px) {
  .container, .nav-inner, .hero-bottom { width: min(100% - 40px, 680px); }
  .section { padding: 88px 0; }
  .nav-inner { position: relative; }
  .nav-links { position: fixed; top: 72px; right: 0; left: 0; display: grid; gap: 0; padding: 12px 20px 20px; background: rgba(251,250,247,.98); border-bottom: 1px solid var(--line); box-shadow: 0 15px 30px rgba(20,20,20,.08); transform: translateY(-150%); transition: transform var(--ease); }
  .nav.menu-visible .nav-links { transform: translateY(0); }
  .nav-links a, .nav.scrolled .nav-links a { display: block; padding: 13px 0; border-bottom: 1px solid var(--line); color: var(--text); font-size: .92rem; }
  .nav-links a::after { display: none; }
  .nav-cta { display: none; }
  .nav-toggle { display: block; margin-left: auto; color: #f7f4ed; }
  .nav.scrolled .nav-toggle { color: var(--text); }
  .nav.menu-visible .nav-toggle span:first-child { transform: translateY(6px) rotate(45deg); }
  .nav.menu-visible .nav-toggle span:nth-child(2) { opacity: 0; }
  .nav.menu-visible .nav-toggle span:last-child { transform: translateY(-6px) rotate(-45deg); }
  .hero { min-height: auto; padding: 140px 0 110px; }
  .hero-grid, .definition-grid, .why-layout, .outcome-grid, .teacher-grid, .details-layout, .faq-grid, .contact-grid { grid-template-columns: 1fr; }
  .hero-grid { gap: 60px; }
  .hero-proof { justify-self: start; }
  .hero-bottom { display: none; }
  .why-cards { grid-template-columns: repeat(3, 1fr); }
  .definition-grid { gap: 50px; }
  .split-intro, .showcase-intro { gap: 35px; }
  .showcase-grid { grid-template-columns: repeat(2, 1fr); }
  .pathway { grid-template-columns: 1fr; gap: 14px; }
  .path-connector { transform: rotate(90deg); }
  .module-grid { grid-template-columns: repeat(2, 1fr); }
  .outcome-grid, .teacher-grid, .details-layout, .faq-grid, .contact-grid { gap: 50px; }
  .teacher-portrait { max-width: 360px; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer p { text-align: left; }
  .footer small { grid-column: 1 / -1; text-align: left; }
}

@media (max-width: 560px) {
  body { font-size: 15px; }
  .container, .nav-inner { width: calc(100% - 32px); }
  .section { padding: 72px 0; }
  .nav-logo span { display: none; }
  .hero { padding-top: 125px; }
  .hero h1 { font-size: clamp(2.35rem, 12vw, 3.5rem); }
  .hero-lead { font-size: .98rem; }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .btn { width: 100%; }
  .hero-proof { width: 100%; padding: 28px 22px; }
  .proof-title { margin-top: 40px; font-size: 2.25rem; }
  .proof-metrics { gap: 8px; }
  .proof-metrics b { font-size: 1.2rem; }
  .why-layout { gap: 32px; }
  .why-statement { padding: 25px 22px 28px; }
  .why-statement p { font-size: 1.18rem; }
  .why-cards, .module-grid { grid-template-columns: 1fr; }
  .why-card { min-height: 0; padding: 22px; }
  .why-card h3 { margin-top: 36px; }
  .section-intro h2, .definition-title h2, .outcome-copy h2, .teacher-copy h2, .contact-copy h2 { font-size: 2rem; }
  .definition-title h2 { font-size: 3rem; }
  .definition-list { grid-template-columns: 1fr; gap: 20px; }
  .definition-list > div { display: grid; grid-template-columns: 36px 1fr; column-gap: 10px; }
  .definition-list span { grid-row: span 2; }
  .definition-list b { margin-top: 0; }
  .split-intro, .showcase-intro { grid-template-columns: 1fr; gap: 0; }
  .showcase-grid { grid-template-columns: 1fr; }
  .showcase-note { align-items: flex-start; flex-direction: column; gap: 6px; }
  .showcase-note a { margin-left: 0; }
  .path-card { min-height: 0; }
  .schedule-bar { align-items: flex-start; flex-direction: column; gap: 4px; }
  .detail-table > div { grid-template-columns: 70px 1fr; gap: 12px; }
  .price-card { padding: 26px 22px; }
  .price { font-size: 3.25rem; }
  .contact-card { align-items: flex-start; flex-direction: column; }
  .contact-card img { width: 130px; height: 130px; }
  .footer-inner { grid-template-columns: 1fr; gap: 16px; }
  .footer small { grid-column: auto; }
}

/* ============================================================
   具体学到什么（learn-section）
   ============================================================ */
.learn-section{padding:96px 0}
.learn-timeline{display:flex;flex-direction:column;gap:18px;margin-top:44px}
.learn-step{display:grid;grid-template-columns:190px 1fr;gap:32px;padding:28px 30px;
  background:var(--paper);border:1px solid var(--line);border-radius:14px;align-items:start}
.learn-when{display:flex;flex-direction:column;gap:8px;padding-top:4px}
.learn-no{font-family:var(--mono);font-size:1.6rem;color:var(--gold);line-height:1}
.learn-min{font-size:.8rem;color:var(--muted);letter-spacing:.04em}
.learn-body h3{font-family:var(--serif);font-size:1.24rem;margin:0 0 14px;color:var(--ink)}
.learn-body p{margin:0 0 10px;color:var(--muted);line-height:1.85;font-size:.97rem}
.learn-body p:last-child{margin-bottom:0}
.learn-body b{color:var(--text)}
.learn-method{color:var(--text)}
.learn-step-online{background:var(--ink);border-color:var(--ink)}
.learn-step-online .learn-body h3{color:var(--paper)}
.learn-step-online .learn-body p{color:#c9ccc6}
.learn-step-online .learn-body b{color:var(--gold-light)}
.learn-step-online .learn-min{color:#8f938c}

.learn-list{margin-top:44px;padding:32px;border:1px solid var(--gold-light);
  border-radius:16px;background:var(--warm)}
.learn-list-head h3{font-family:var(--serif);font-size:1.22rem;margin:0 0 8px;color:var(--ink)}
.learn-list-head p{margin:0 0 18px;color:var(--muted);font-size:.92rem}
.learn-list-body{margin:0 0 20px;padding-left:22px;color:var(--text);line-height:1.95;font-size:1rem}
.learn-list-body li{margin-bottom:8px}
.learn-list-body b{color:var(--gold-dark)}

/* 复制按钮：金色实底主按钮（区块为浅色暖底，btn-line 在此不可见） */
.learn-copy{margin-top:6px;gap:10px;min-height:54px;padding:15px 34px;
  font-size:1rem;letter-spacing:.02em;border-radius:3px}
.learn-copy svg{width:17px;height:17px;flex:none;opacity:.9}
.learn-copy:hover svg{opacity:1}
.learn-copy:active{transform:translateY(0) scale(.985)}
.learn-copy.is-copied{background:var(--ink);color:var(--gold-light);
  box-shadow:0 8px 24px rgba(28,29,26,.25)}
.learn-copy-hint{margin:10px 0 0;font-size:.82rem;color:var(--muted)}

@media (max-width:768px){
  .learn-section{padding:64px 0}
  .learn-step{grid-template-columns:1fr;gap:14px;padding:22px 20px}
  .learn-when{flex-direction:row;align-items:baseline;gap:12px}
  .learn-list{padding:22px 18px}
  .learn-copy{width:100%;padding:15px 20px}
  .learn-copy svg{width:16px;height:16px}
}

/* ============================================================
   三种上课时间（slots-section）
   ============================================================ */
.slots-section{padding:96px 0;background:var(--warm)}
.slots-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(270px,1fr));gap:18px;margin-top:44px}
.slot-card{position:relative;padding:28px 26px;border:1px solid var(--line);
  border-radius:14px;background:var(--paper)}
.slot-card-featured{border-color:var(--gold);box-shadow:0 6px 24px rgba(184,137,42,.12)}
.slot-tag{position:absolute;top:-11px;left:24px;font-size:.7rem;letter-spacing:.1em;
  padding:3px 10px;border-radius:999px;background:var(--ink);color:var(--gold-light)}
.slot-card-featured .slot-tag{background:var(--gold);color:#1a1408}
.slot-card h3{font-family:var(--serif);font-size:1.24rem;margin:14px 0 8px;color:var(--ink)}
.slot-when{font-family:var(--mono);font-size:.86rem;color:var(--gold-dark);margin:0 0 14px}
.slot-card ul{margin:0;padding-left:18px;color:var(--muted);font-size:.93rem;line-height:1.85}
.slots-note{margin-top:26px;padding:26px 28px;border-left:3px solid var(--gold);
  background:var(--paper);border-radius:0 12px 12px 0}
.slots-note h3{font-family:var(--serif);font-size:1.12rem;margin:0 0 8px;color:var(--ink)}
.slots-note p{margin:0;color:var(--muted);line-height:1.85}
.slots-note b{color:var(--gold-dark)}
.slots-family{margin-top:18px;padding:22px 28px;border:1px dashed var(--gold);
  border-radius:12px;text-align:center}
.slots-family p{margin:0;color:var(--text);font-size:1.02rem;line-height:1.8}
.slots-family b{color:var(--gold-dark);font-size:1.08em}

@media (max-width:768px){
  .slots-section{padding:64px 0}
  .slot-card{padding:22px 20px}
  .slots-note,.slots-family{padding:18px 20px}
}

/* ============================================================
   价格档位 + 行业对比
   ============================================================ */
.price-tiers{display:flex;flex-direction:column;gap:10px;margin:14px 0 4px}
.tier-row{display:grid;grid-template-columns:1fr auto;gap:4px 14px;padding:14px 16px;
  border:1px solid var(--line);border-radius:12px;background:var(--paper)}
.tier-row-hot{border-color:var(--gold);background:rgba(184,137,42,.06)}
.tier-name{font-weight:600;font-size:1rem;color:var(--ink);display:flex;align-items:center;gap:8px}
.tier-name em{font-style:normal;font-size:.7rem;letter-spacing:.06em;padding:2px 8px;
  border-radius:999px;background:var(--ink);color:var(--gold-light)}
.tier-row-hot .tier-name em{background:var(--gold);color:#1a1408}
.tier-desc{grid-column:1;font-size:.86rem;color:var(--muted)}
.tier-price{grid-row:1/3;grid-column:2;align-self:center;font-family:var(--mono);
  font-size:1.5rem;color:var(--gold-dark);white-space:nowrap}
.tier-price span{font-size:.9rem;margin-right:2px}
.tier-unit{grid-row:3;grid-column:1;font-size:.76rem;color:var(--muted)}
.price-normal{margin:0 0 12px;font-size:.86rem;color:var(--muted);line-height:1.7}
.price-normal b{color:var(--text)}

.compare-section{padding:96px 0}
.cmp-wrap{margin-top:36px;overflow-x:auto}
.cmp-table{width:100%;border-collapse:collapse;font-size:.92rem;min-width:640px}
.cmp-table th{background:var(--ink);color:var(--paper);padding:12px 14px;text-align:left;font-weight:600}
.cmp-table td{padding:12px 14px;border-bottom:1px solid var(--line);color:var(--muted)}
.cmp-table tbody tr:nth-child(even){background:rgba(0,0,0,.02)}
.cmp-us td{color:var(--text);font-weight:600;background:rgba(184,137,42,.05)}
.cmp-us-first td{background:rgba(184,137,42,.1)}
.cmp-us-hot td{background:rgba(184,137,42,.18);color:var(--ink)}
.cmp-note{margin:14px 0 0;font-size:.8rem;color:var(--muted);line-height:1.7}
.cmp-points{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px;margin-top:32px}
.cmp-point{padding:24px 22px;border:1px solid var(--line);border-radius:14px;background:var(--paper)}
.cmp-point h3{font-family:var(--serif);font-size:1.08rem;margin:0 0 8px;color:var(--ink)}
.cmp-point p{margin:0;color:var(--muted);font-size:.92rem;line-height:1.8}

@media (max-width:768px){
  .compare-section{padding:64px 0}
  .tier-price{font-size:1.3rem}
}

/* ── 时段 × 次数 两维结构 ─────────────────────────────── */
.slots-when-title{font-family:var(--serif);font-size:1.16rem;color:var(--ink);
  margin:0 0 18px;display:flex;align-items:baseline;gap:8px}
.slots-when-title b{font-family:var(--mono);font-size:.82rem;color:var(--gold-dark);
  font-weight:500;letter-spacing:.04em}
.slots-when-hint{margin:20px 0 0;padding:14px 20px;border:1px dashed var(--gold);
  border-radius:12px;font-size:.93rem;color:var(--muted);line-height:1.8}
.slots-when-hint b{color:var(--gold-dark)}

.slots-times{margin-top:38px}
.times-grid{display:flex;flex-direction:column;gap:10px}
.time-row{display:grid;grid-template-columns:210px 1fr;gap:8px 20px;align-items:center;
  padding:16px 20px;border:1px solid var(--line);border-radius:12px;background:var(--paper)}
.time-row-core{border-color:var(--gold);background:rgba(184,137,42,.07)}
.time-name{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.time-name b{font-family:var(--serif);font-size:1.06rem;color:var(--ink)}
.time-name em{font-style:normal;font-size:.7rem;letter-spacing:.06em;padding:2px 8px;
  border-radius:999px;background:var(--ink);color:var(--gold-light)}
.time-row-core .time-name em{background:var(--gold);color:#1a1408}
.time-desc{font-size:.93rem;color:var(--muted);line-height:1.75}
.slots-note-hint{margin:16px 0 0;font-size:.93rem;color:var(--muted);line-height:1.8}
.slots-note-hint b{color:var(--gold-dark)}

@media (max-width:768px){
  .time-row{grid-template-columns:1fr;gap:6px}
  .slots-when-title{flex-direction:column;gap:4px}
}

/* ═══════════════════════════════════════════════════════
   模块货架（modules-section）
   ═══════════════════════════════════════════════════════ */
.modules-section{padding:96px 0}
.mod-core{margin-top:44px;padding:30px;border:1px solid var(--gold);
  border-radius:18px;background:var(--paper)}
.mod-core-head{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap;margin-bottom:20px}
.mod-badge{font-family:var(--mono);font-size:.7rem;letter-spacing:.1em;padding:4px 12px;
  border-radius:999px;background:var(--gold);color:#1a1408;font-weight:600}
.mod-core-head h3{font-family:var(--serif);font-size:1.28rem;margin:0;color:var(--ink)}
.mod-core-head p{width:100%;margin:0;font-size:.92rem;color:var(--muted);line-height:1.8}
.mod-core-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:16px}

.mod-shelf{margin:40px 0 8px;text-align:center}
.shelf-title{font-family:var(--serif);font-size:1.14rem;color:var(--muted);margin:0;line-height:1.7}
.shelf-title em{font-style:normal;color:var(--gold-dark)}

.shelf-block{margin-top:34px;padding:28px 26px;border:1px solid var(--line);
  border-radius:18px;background:var(--paper)}
.shelf-block-fde{background:var(--ink);border-color:var(--ink)}
.shelf-head{display:flex;gap:16px;align-items:flex-start;margin-bottom:20px}
.shelf-icon{flex:none;width:52px;height:52px;border-radius:12px;display:flex;
  align-items:center;justify-content:center;font-size:.82rem;font-weight:600;
  letter-spacing:.04em;background:var(--warm);color:var(--gold-dark);
  border:1px solid var(--gold-light)}
.shelf-block-fde .shelf-icon{background:rgba(184,137,42,.2);color:var(--gold-light)}
.shelf-head h3{font-family:var(--serif);font-size:1.2rem;margin:0 0 6px;color:var(--ink)}
.shelf-head p{margin:0;font-size:.9rem;color:var(--muted);line-height:1.75}
.shelf-block-fde .shelf-head h3{color:var(--paper)}
.shelf-block-fde .shelf-head p{color:#c9ccc6}

.shelf-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(232px,1fr));gap:14px}
.shelf-grid-3{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}

.mod-card{position:relative;padding:20px 18px;border:1px solid var(--line);
  border-radius:14px;background:var(--warm)}
.mod-card-core{border-color:var(--gold-light);background:rgba(184,137,42,.05)}
.mod-card-hot{border-color:var(--gold);box-shadow:0 4px 18px rgba(184,137,42,.13)}
.shelf-block-fde .mod-card{background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.12)}
.mod-no{font-family:var(--mono);font-size:.78rem;color:var(--gold-dark);letter-spacing:.06em}
.mod-card h4{font-family:var(--serif);font-size:1.06rem;margin:6px 0 10px;color:var(--ink);
  line-height:1.45}
.mod-what{margin:0 0 10px;font-size:.88rem;color:var(--muted);line-height:1.78}
.mod-get{margin:0;padding-top:10px;border-top:1px dashed var(--line);
  font-size:.84rem;color:var(--text);line-height:1.7}
.shelf-block-fde .mod-get{border-top-color:rgba(255,255,255,.16);color:#dfe1dd}
.mod-get b{display:block;font-size:.72rem;letter-spacing:.06em;color:var(--gold-dark);
  margin-bottom:3px}
.shelf-block-fde .mod-get b{color:var(--gold-light)}
.mod-note{display:inline-block;margin-left:6px;padding:1px 7px;border-radius:999px;
  background:var(--warm);border:1px solid var(--gold-light);font-size:.7rem;color:var(--gold-dark)}

.mod-paths{margin-top:38px;padding:30px 28px;border:1px solid var(--gold-light);
  border-radius:18px;background:var(--warm)}
.mod-paths h3{font-family:var(--serif);font-size:1.2rem;margin:0 0 20px;color:var(--ink)}
.path-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px}
.path-card{position:relative;padding:22px 20px;border:1px solid var(--line);
  border-radius:14px;background:var(--paper)}
.path-card-mid{border-color:var(--gold);box-shadow:0 5px 20px rgba(184,137,42,.14)}
.path-tag{position:absolute;top:-10px;left:20px;font-size:.68rem;letter-spacing:.1em;
  padding:3px 10px;border-radius:999px;background:var(--ink);color:var(--gold-light)}
.path-card-mid .path-tag{background:var(--gold);color:#1a1408}
.path-name{font-family:var(--serif);font-size:1.08rem;color:var(--ink);margin:6px 0 6px}
.path-desc{font-size:.86rem;color:var(--muted);line-height:1.7;margin:0 0 10px}
.path-cost{font-family:var(--mono);font-size:.9rem;color:var(--gold-dark)}
.mod-paths-note{margin:20px 0 0;font-size:.9rem;color:var(--muted);line-height:1.8}
.mod-paths-note strong{color:var(--gold-dark)}

@media (max-width:768px){
  .modules-section{padding:64px 0}
  .mod-core,.shelf-block,.mod-paths{padding:20px 18px}
  .shelf-head{flex-direction:column;gap:10px}
}

/* ═══════════════════════════════════════════════════════
   跨站导引（musk → www 主站）
   ═══════════════════════════════════════════════════════ */
.nav-parent a{color:var(--gold-dark);border-bottom:1px solid var(--gold-light)}
.nav-parent a:hover{color:var(--gold);border-bottom-color:var(--gold)}
.footer-parent{color:var(--gold-dark);text-decoration:none;border-bottom:1px solid var(--gold-light)}
.footer-parent:hover{color:var(--gold)}

.crosslink-section{padding:72px 0}
.crosslink{display:grid;grid-template-columns:1fr auto;gap:28px;align-items:center;
  padding:34px 36px;border:1px solid var(--gold);border-radius:18px;
  background:var(--paper);box-shadow:0 6px 26px rgba(184,137,42,.1)}
.crosslink-kicker{font-family:var(--mono);font-size:.72rem;letter-spacing:.12em;
  color:var(--gold-dark);margin:0 0 8px}
.crosslink h2{font-family:var(--serif);font-size:1.32rem;margin:0 0 10px;color:var(--ink)}
.crosslink h2 em{font-style:normal;color:var(--gold-dark)}
.crosslink-text > p:last-child{margin:0;font-size:.94rem;color:var(--muted);
  line-height:1.8;max-width:56ch}
.crosslink-btn{white-space:nowrap}

@media (max-width:768px){
  .crosslink{grid-template-columns:1fr;padding:24px 20px}
  .crosslink-btn{width:100%;text-align:center}
}

/* 价格按人分档（补强 tier-price 的加号与副标） */
.price-tiers-form .tier-row{grid-template-columns:1fr auto}
.price-tiers-form .tier-price span:last-child{font-size:1.1rem;margin-left:1px}
.price-tiers-form .tier-name em{background:var(--warm);border:1px solid var(--gold-light);
  color:var(--gold-dark)}

/* ═══════════════════════════════════════════════════════
   /modules/ 模块表页
   ═══════════════════════════════════════════════════════ */
.mod-table{width:100%;border-collapse:collapse;margin-top:34px;font-size:.92rem}
.mod-table thead th{background:var(--ink);color:var(--paper);padding:12px 14px;
  text-align:left;font-weight:600;font-size:.88rem}
.mod-table td{padding:14px;border-bottom:1px solid var(--line);color:var(--muted);
  line-height:1.75;vertical-align:top}
.mod-table tbody tr:nth-child(even){background:rgba(0,0,0,.02)}
.mod-table td:first-child{width:52px;font-family:var(--mono);color:var(--gold-dark);
  font-size:.85rem}
.mod-table td:nth-child(2){width:180px;color:var(--ink);font-family:var(--serif);
  font-size:1rem}
.mod-table td small{display:inline-block;margin-top:6px;padding:1px 8px;border-radius:999px;
  background:var(--warm);border:1px solid var(--gold-light);font-size:.7rem;
  color:var(--gold-dark);font-family:var(--sans)}
.mod-table td:last-child{color:var(--text)}
.faq-list{margin-top:34px;display:flex;flex-direction:column;gap:10px}
.faq-list details{padding:18px 20px;border:1px solid var(--line);border-radius:12px;
  background:var(--paper)}
.faq-list summary{cursor:pointer;font-weight:600;font-size:1rem;color:var(--ink);
  display:flex;justify-content:space-between;gap:12px;list-style:none}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:"＋";color:var(--gold-dark);font-weight:400;flex:none}
.faq-list details[open] summary::after{content:"－"}
.faq-list details p{margin:12px 0 0;color:var(--muted);line-height:1.85;font-size:.94rem}
@media (max-width:768px){
  .mod-table{min-width:560px}
  .mod-table{font-size:.86rem}
  .mod-table thead{display:none}
  .mod-table tr{display:block;border-bottom:1px solid var(--line);padding:12px 0}
  .mod-table td{display:block;width:auto!important;border:none;padding:4px 0}
  .mod-table td:first-child{font-family:var(--mono);font-size:.8rem}
  .mod-table td:nth-child(2){font-size:.98rem}
}

/* ── FDE 深色区块文字对比度修复（深底必须浅字）───────────────── */
.shelf-block-fde .mod-card{background:rgba(255,255,255,.07);border-color:rgba(232,216,173,.28)}
.shelf-block-fde .mod-card h4{color:var(--paper)}
.shelf-block-fde .mod-what{color:rgba(247,244,237,.82)}
.shelf-block-fde .mod-get{color:rgba(247,244,237,.9);border-top-color:rgba(232,216,173,.25)}
.shelf-block-fde .mod-note{background:rgba(232,216,173,.14);border-color:rgba(232,216,173,.4);color:var(--gold-light)}
.shelf-block-fde .shelf-icon{background:rgba(232,216,173,.16);border:1px solid rgba(232,216,173,.35);color:var(--gold-light)}
.shelf-block-fde .shelf-head h3{color:var(--gold-light)}
.shelf-block-fde .shelf-head p{color:rgba(247,244,237,.82)}
.shelf-block-fde .mod-no{color:var(--gold-light)}

/* ═══════════════════════════════════════════════════════
   首屏压缩（用户要求：这一屏占比缩小，展示更多信息）
   ═══════════════════════════════════════════════════════ */
.hero{min-height:0;padding:132px 0 64px}
.hero h1{font-size:clamp(2.3rem,4.2vw,3.9rem);line-height:1.2;max-width:640px}
.hero-lead{margin-top:20px;font-size:1rem;line-height:1.85;max-width:560px}
.hero-actions{margin-top:28px}
.hero-label{margin-bottom:12px}
.hero-grid{gap:60px;grid-template-columns:minmax(0,1.2fr) minmax(290px,.8fr)}
.hero-proof{padding:26px 24px 24px}
.proof-title{font-size:1.5rem}
.proof-metrics{gap:14px}
.hero-bottom{bottom:18px}

/* 首屏下方的模块预览条：一眼看到「16 个模块」 */
.hero-strip{margin-top:34px;padding-top:22px;border-top:1px solid rgba(232,216,173,.16)}
.hero-strip-lead{font-family:var(--mono);font-size:.68rem;letter-spacing:.13em;
  color:rgba(247,244,237,.42);margin:0 0 12px}
.hero-strip-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(112px,1fr));gap:8px}
.strip-item{padding:10px 12px;border:1px solid rgba(232,216,173,.18);border-radius:10px;
  background:rgba(255,255,255,.035);text-decoration:none;display:block;transition:.18s}
.strip-item:hover{border-color:rgba(232,216,173,.45);background:rgba(255,255,255,.07)}
.strip-no{display:block;font-family:var(--mono);font-size:.66rem;letter-spacing:.06em;
  color:var(--gold);margin-bottom:3px}
.strip-name{display:block;font-size:.84rem;color:rgba(247,244,237,.86);line-height:1.4}
.strip-core{border-color:rgba(232,216,173,.4);background:rgba(184,137,42,.1)}
.strip-more{display:flex;align-items:center;justify-content:center;padding:10px 12px;
  border:1px dashed rgba(232,216,173,.3);border-radius:10px;font-size:.8rem;
  color:rgba(247,244,237,.6);text-decoration:none}
.strip-more:hover{border-color:rgba(232,216,173,.55);color:var(--gold-light)}

@media (max-width:768px){
  .hero{padding:112px 0 52px}
  .hero-grid{gap:34px}
  .hero h1{font-size:clamp(2rem,8vw,2.7rem)}
  .hero-bottom{display:none}
}

/* ═══════════════════════════════════════════════════════
   家长决策页新增区块（2026-10-03 运营方案）
   ═══════════════════════════════════════════════════════ */

/* 首屏补充说明（免责 + 四件事） */
.hero-disclaimer{margin-top:26px;padding:16px 20px;border-left:2px solid rgba(232,216,173,.4);
  background:rgba(255,255,255,.035);border-radius:0 10px 10px 0}
.hero-disclaimer p{margin:0;font-size:.86rem;line-height:1.8;color:rgba(247,244,237,.72)}
.hero-disclaimer b{color:var(--gold-light)}
.hero-four{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px!important}
.hero-four span{padding:3px 11px;border:1px solid rgba(232,216,173,.3);border-radius:999px;
  font-size:.78rem;color:var(--gold-light)}

/* why 区：创作流程 */
.why-statement{margin-top:34px;padding:22px 26px;border:1px solid var(--gold);
  border-radius:14px;background:var(--warm)}
.why-statement p{margin:0;font-size:1.04rem;line-height:1.9;color:var(--text)}
.why-statement strong{color:var(--gold-dark)}
.why-flow{margin-top:30px;padding:26px 24px;border:1px solid var(--line);border-radius:16px;
  background:var(--paper)}
.flow-steps{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.flow-steps li{display:flex;align-items:center;gap:8px;padding:9px 14px;border-radius:999px;
  background:var(--warm);border:1px solid var(--line);font-size:.88rem;color:var(--text)}
.flow-no{width:20px;height:20px;border-radius:50%;background:var(--gold);color:#1a1408;
  font-family:var(--mono);font-size:.68rem;display:flex;align-items:center;justify-content:center;
  font-weight:600}
.why-points{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px;margin-top:34px}
.why-point{padding:24px 22px;border:1px solid var(--line);border-radius:14px;background:var(--paper)}
.why-no{font-family:var(--mono);font-size:.86rem;color:var(--gold-dark);letter-spacing:.08em}
.why-point h3{font-family:var(--serif);font-size:1.1rem;margin:8px 0 8px;color:var(--ink)}
.why-point p{margin:0;font-size:.92rem;color:var(--muted);line-height:1.8}

/* 家长 30 秒看懂 */
.parent30-section{padding:96px 0}
.p30-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px;margin-top:40px}
.p30-item{position:relative;padding:26px 24px;border:1px solid var(--line);border-radius:16px;
  background:var(--paper)}
.p30-q{position:absolute;top:18px;right:22px;font-family:var(--serif);font-size:2.4rem;
  color:var(--gold-light);line-height:1}
.p30-item h3{font-family:var(--serif);font-size:1.16rem;margin:0 0 10px;color:var(--ink);
  position:relative}
.p30-item p{margin:0;font-size:.93rem;color:var(--muted);line-height:1.85}

/* 按年龄学习 */
.age-section{padding:96px 0}
.age-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px;margin-top:40px}
.age-card{padding:28px 24px;border:1px solid var(--line);border-radius:16px;background:var(--paper)}
.age-card-mid{border-color:var(--gold);box-shadow:0 6px 24px rgba(184,137,42,.12)}
.age-head{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap;margin-bottom:16px}
.age-range{font-family:var(--mono);font-size:1.06rem;color:var(--gold-dark);font-weight:600}
.age-theme{font-size:.8rem;color:var(--muted);padding:2px 9px;border-radius:999px;
  background:var(--warm);border:1px solid var(--line)}
.age-card h4{font-size:.72rem;letter-spacing:.1em;color:var(--gold-dark);margin:0 0 8px;font-weight:600}
.age-card ul{margin:0 0 18px;padding-left:18px;color:var(--muted);font-size:.9rem;line-height:1.9}
.age-ability{margin:0 0 10px;padding:12px 14px;border-radius:10px;background:var(--warm);
  color:var(--text);font-size:.9rem;line-height:1.75}
.age-note{margin:0;font-size:.82rem;color:var(--muted);line-height:1.75}

/* 孩子带走什么 */
.outcome-section .section-desc{max-width:52ch}
.take-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;margin-top:40px}
.take-item{display:flex;gap:12px;align-items:flex-start;padding:20px 18px;
  border:1px solid var(--line);border-radius:14px;background:var(--paper)}
.take-item-last{grid-column:1/-1;border-color:var(--gold);background:rgba(184,137,42,.05)}
.take-no{font-family:var(--mono);font-size:.8rem;color:var(--gold-dark);flex:none;padding-top:2px}
.take-item p{margin:0;font-size:.95rem;color:var(--text);line-height:1.7}
.accept-box{margin-top:30px;padding:30px 28px;border:1px solid var(--gold-light);border-radius:16px;
  background:var(--warm)}
.accept-box h3{font-family:var(--serif);font-size:1.16rem;margin:0 0 16px;color:var(--ink)}
.accept-list{margin:0;padding-left:22px;color:var(--text);line-height:2;font-size:1rem}
.accept-list li{margin-bottom:4px}
.accept-hint{margin:16px 0 0;font-size:.88rem;color:var(--muted);line-height:1.75}

/* 安全承诺 */
.safety-section{padding:96px 0}
.safety-list{list-style:none;margin:38px 0 0;padding:0;display:grid;
  grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:12px}
.safety-list li{display:flex;gap:12px;align-items:flex-start;padding:16px 18px;
  border:1px solid var(--line);border-radius:12px;background:var(--paper);
  font-size:.93rem;color:var(--text);line-height:1.75}
.safety-no{font-family:var(--mono);font-size:.74rem;color:var(--gold-dark);flex:none;
  padding-top:3px;letter-spacing:.06em}

/* 成果展示：真实性说明 */
.showcase-note{margin:24px 0 0;font-size:.82rem;color:var(--muted);line-height:1.75;
  padding-top:16px;border-top:1px solid var(--line)}
.mod-safety{display:block;margin-top:8px;font-size:.84rem;color:#8a5a1e;line-height:1.7}

/* 安全清单（模块区） */
.safety-list-compact{margin:20px 0 0;padding-left:20px;font-size:.88rem;color:var(--muted);line-height:1.9}

@media (max-width:768px){
  .parent30-section,.age-section,.safety-section{padding:64px 0}
  .take-grid{grid-template-columns:1fr}
  .flow-steps{gap:7px}
  .flow-steps li{font-size:.82rem;padding:7px 11px}
}

/* ── 三路径模块卡：两段式（做出什么 / 顺手懂的原理）────────── */
.mod-make{margin:0 0 10px;font-size:.88rem;color:var(--muted);line-height:1.78}
.mod-make b{display:block;font-size:.72rem;letter-spacing:.06em;color:var(--gold-dark);
  margin-bottom:3px}
.shelf-block-fde .mod-make{color:rgba(247,244,237,.82)}
.shelf-block-fde .mod-make b{color:var(--gold-light)}
.shelf-icon{font-family:var(--mono);font-size:1.02rem;font-weight:600}

/* ═══════════════════════════════════════════════════════════════
   移动端适配 · 总纲（2026-10-03）
   断点策略：
     ≤1024px  平板：双栏降单栏，网格降2 列
     ≤768px   手机：首屏重排、模块条可横滑、表格转卡片
     ≤430px小屏（iPhone 14 Pro Max / 小米）：字号与间距再收紧
     ≤360px   极小屏（iPhone SE）：单列、最小字号
   横屏     矮屏：首屏去掉占位，高度自适应
   ═══════════════════════════════════════════════════════════════ */

/* ── 关键：解除 min-height，避免首屏空白 ───────────────── */
.hero{min-height:0}

/* ── ≤768px 首屏重排 ──────────────────────────────────── */
@media (max-width:768px){
  /* 顶部留白：移动端导航更高 */
  .hero{padding:104px 0 44px}
  .hero::before{width:420px;height:420px;top:-20%;right:-40%}
  .hero::after{width:320px;height:320px;bottom:-180px;right:-30%}

  /* 单栏：文案 → 数据卡 → 模块条 */
  .hero-grid{grid-template-columns:1fr;gap:26px}

  /* 文案区 */
  .hero-copy{max-width:none}
  .hero h1{font-size:clamp(1.72rem,7.4vw,2.3rem);line-height:1.28;letter-spacing:-.02em;
    max-width:none}
  .hero-label{margin-bottom:10px;font-size:.95rem}
  .hero-lead{margin-top:16px;font-size:.95rem;line-height:1.78;max-width:none}
  .hero-actions{margin-top:22px;gap:10px}
  .hero-actions .btn{flex:1 1 auto;min-width:calc(50% - 5px);padding:12px 14px;
    font-size:.9rem;text-align:center}

  /* 免责块：手机上更紧凑 */
  .hero-disclaimer{margin-top:20px;padding:13px 15px}
  .hero-disclaimer p{font-size:.8rem;line-height:1.7}
  .hero-four{gap:6px;margin-top:9px!important}
  .hero-four span{padding:2px 9px;font-size:.72rem}

  /* 数据卡：手机上改为横向紧凑排布，不占太多竖向空间 */
  .hero-proof{justify-self:stretch;width:auto;padding:20px 18px}
  .proof-head{font-size:.6rem}
  .proof-title{font-size:1.28rem;line-height:1.3}
  .proof-metrics{gap:10px;margin:14px 0 12px}
  .proof-metrics b{font-size:1.5rem}
  .proof-metrics span{font-size:.72rem}
  .proof-metrics small{font-size:.68rem}
  .hero-proof > p{font-size:.78rem;line-height:1.7}

  /* 模块条：改为横向滑动，避免占 4 行高度 */
  .hero-strip{margin-top:22px;padding-top:16px}
  .hero-strip-lead{font-size:.62rem;margin-bottom:10px;
    white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .hero-strip-grid{display:flex;gap:8px;overflow-x:auto;-webkit-overflow-scrolling:touch;
    scroll-snap-type:x proximity;padding-bottom:6px;
    scrollbar-width:none;-ms-overflow-style:none}
  .hero-strip-grid::-webkit-scrollbar{display:none}
  .strip-item{flex:0 0 auto;min-width:104px;scroll-snap-align:start;padding:9px 12px}
  .strip-name{font-size:.8rem}
  .strip-more{min-width:118px;flex:0 0 auto}

  .hero-bottom{display:none}
  .hero-orbit{opacity:.6}
}

/* ── ≤430px 小屏（主流手机）────────────────────────────── */
@media (max-width:430px){
  .hero{padding:96px 0 40px}
  .hero h1{font-size:clamp(1.6rem,7.6vw,2.05rem);line-height:1.3}
  .hero-lead{font-size:.9rem;line-height:1.75}
  .hero-actions{gap:8px}
  .hero-actions .btn{min-width:100%;padding:12px;font-size:.88rem}
  .eyebrow{font-size:.66rem;letter-spacing:.06em}
  .proof-metrics{gap:8px}
  .proof-metrics b{font-size:1.32rem}
  .hero-strip-grid{gap:7px}
  .strip-item{min-width:96px}
  .strip-name{font-size:.76rem}

  /* 通用容器与标题 */
  .container{width:calc(100% - 32px)}
  .section{padding:60px 0}
  .section-intro{margin-bottom:28px}
  .section-title,.section-intro h2{font-size:1.5rem;line-height:1.4}
  .section-desc{font-size:.9rem;line-height:1.78}
  .section-kicker{font-size:.66rem}

  /* 各网格降单列 */
  .shelf-grid,.p30-grid,.age-grid,.take-grid,.why-points,.cmp-points,
  .why-points,.path-grid,.mod-core-grid,.shelf-grid-3{
    grid-template-columns:1fr;gap:12px}
  .safety-list{grid-template-columns:1fr;gap:10px}
  .slots-grid,.times-grid{grid-template-columns:1fr}

  /* 卡片内边距收紧 */
  .shelf-block,.mod-core,.mod-paths,.p30-item,.age-card,.take-item,
  .path-card,.why-point,.cmp-point,.mod-card{
    padding:18px 16px!important}
  .accept-box{padding:22px 18px}
  .why-statement,.why-flow{padding:20px 18px}
  .flow-steps{gap:6px}
  .flow-steps li{padding:7px 10px;font-size:.8rem}
  .accept-list{padding-left:18px;line-height:1.95;font-size:.94rem}

  /* 三路径 A/B/C 徽标缩小 */
  .shelf-head{gap:12px}
  .shelf-icon{width:44px;height:44px;font-size:.78rem}
  .shelf-head h3{font-size:1.08rem}
  .shelf-head p{font-size:.86rem;line-height:1.7}

  /* 表格转卡片：横滑容器 + 紧凑列宽 */
  .cmp-wrap{margin-top:24px;-webkit-overflow-scrolling:touch}
  .cmp-table{min-width:520px;font-size:.84rem}
  .cmp-table th,.cmp-table td{padding:10px 11px}
  .cmp-note{font-size:.74rem;line-height:1.65}

  /* FAQ */
  .faq-item{padding:14px 16px!important}
  .faq-q{font-size:.94rem!important}
  .faq-a{font-size:.88rem!important;line-height:1.8!important}

  /* 表单与按钮 */
  .btn{padding:13px 18px;font-size:.92rem}
  .price-tiers .tier-row{grid-template-columns:1fr;gap:6px;padding:14px 15px}
  .tier-price{grid-row:auto;grid-column:1;font-size:1.35rem}
  .price-card{padding:20px 18px!important}

  /* 跨站导引 */
  .crosslink{grid-template-columns:1fr;padding:22px 18px;gap:16px}
  .crosslink h2{font-size:1.14rem}
  .crosslink-text > p:last-child{font-size:.86rem}
  .crosslink-btn{width:100%;text-align:center;padding:14px}
}

/* ── ≤360px 极小屏（iPhone SE 等）──────────────────────── */
@media (max-width:360px){
  .hero{padding:92px 0 36px}
  .hero h1{font-size:1.5rem}
  .hero-lead{font-size:.86rem}
  .strip-item{min-width:90px;padding:8px 10px}
  .strip-name{font-size:.72rem}
  .proof-metrics b{font-size:1.2rem}
  .proof-metrics small{font-size:.64rem}
  .container{width:calc(100% - 28px)}
  .section{padding:52px 0}
  .section-intro h2{font-size:1.36rem}
  .cmp-table{min-width:460px}
}

/* ── 横屏矮屏：首屏不占满，去掉绝对定位元素 ─────────────── */
@media (max-height:520px) and (orientation:landscape){
  .hero{padding:88px 0 32px}
  .hero-orbit,.hero::before,.hero::after,.hero-bottom{display:none}
  .hero-grid{grid-template-columns:1fr 1fr;gap:24px;align-items:center}
  .hero h1{font-size:1.72rem}
  .hero-lead{font-size:.86rem;margin-top:12px}
  .hero-strip{margin-top:16px;padding-top:12px}
  .hero-proof{padding:16px 16px}
}

/* ── 触屏设备：去掉 hover 位移，避免点击后卡住 ─────────── */
@media (hover:none){
  .btn:hover,.nav-links a:hover,.strip-item:hover{transform:none}
  .strip-item:active{background:rgba(255,255,255,.09)}
}

/* ── 大屏（≥1440）：限制首屏宽度，避免一行太长 ───────────── */
@media (min-width:1440px){
  .hero-copy{max-width:760px}
  .hero h1{font-size:4rem}
  .hero-lead{max-width:640px}
}

/* ═══════════════════════════════════════════════════════════════
   矮屏（iPhone SE / 小屏手机）专项：首屏必须装下
   策略：把「数据卡」和「免责块」的可视高度压到最低，
        模块条已是横滑（一行），确保 h1 + lead + 按钮 + 模块条 首屏可见
   ═══════════════════════════════════════════════════════════════ */
@media (max-width:768px) and (max-height:740px){
  .hero{padding:88px 0 30px}

  /* 主标题压到两行内 */
  .hero h1{font-size:clamp(1.5rem,6.6vw,1.9rem);line-height:1.26;margin-bottom:0}

  /* 副文案限高：超出部分省略，避免占 6—7 行 */
  .hero-lead{font-size:.88rem;line-height:1.7;margin-top:12px;
    display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden}

  /* 免责块：手机上改为一行提示，详情在#safety 区 */
  .hero-disclaimer{margin-top:14px;padding:10px 13px}
  .hero-disclaimer>p:first-child{font-size:.74rem;line-height:1.6;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .hero-four{display:none}

  /* 数据卡：只保留标题 + 三项指标，说明文字收起 */
  .hero-proof{padding:14px 15px}
  .proof-head{display:none}
  .proof-title{font-size:1.1rem;margin-bottom:10px}
  .proof-line{margin:8px 0 10px}
  .proof-metrics{margin:0 0 10px;gap:10px}
  .proof-metrics b{font-size:1.24rem}
  .proof-metrics small{font-size:.64rem}
  .hero-proof>p{font-size:.74rem;line-height:1.6;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

  /* 按钮与模块条紧凑 */
  .hero-actions{margin-top:16px;gap:8px}
  .hero-strip{margin-top:14px;padding-top:12px}
  .hero-strip-lead{font-size:.58rem;margin-bottom:7px}
  .strip-item{min-width:88px;padding:7px 10px}
  .strip-name{font-size:.72rem}
}

/* 更矮（如 iPhone SE 竖屏 667）：进一步取舍 */
@media (max-width:768px) and (max-height:680px){
  .hero-lead{-webkit-line-clamp:3}
  .hero-proof>p{display:none}
  .hero-disclaimer>p:first-child{-webkit-line-clamp:1}
  .hero-strip-lead{display:none}
  .hero h1{font-size:1.5rem}
  .hero{padding:82px 0 26px}
}

/* ═══════════════════════════════════════════════════════════════
   补漏：剩余 section 的移动端 padding + 全局防溢出
   ═══════════════════════════════════════════════════════════════ */
@media (max-width:768px){
  .intro-section,.outcome-section,.showcase-section,.contact-section,
  .comparison-section,.teacher-section{padding:60px 0}

  /* 横向溢出防护：任何块都不许超出视口 */
  .hero,.hero-grid,.hero-copy,.hero-proof,.hero-strip,.shelf-block,
  .section,.container,.mod-card,.shelf-head,.p30-item,.age-card,
  .take-item,.why-point,.why-flow,.why-statement,.cmp-point,
  .path-card,.safety-list li,.accept-box,.mod-core,.mod-paths,
  .slots-note,.slots-family,.slot-card,.time-row,.crosslink{
    max-width:100vw;overflow-wrap:break-word;word-break:break-word}

  /* 表格与可滚动容器：允许内部横滑，但容器不溢出 */
  .cmp-wrap,.mod-table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;max-width:100%}
  .showcase-grid{grid-template-columns:1fr}
  .outcome-grid,.definition-grid,.teacher-grid,.details-layout{grid-template-columns:1fr!important}

  /* 详情表：键值改上下排布 */
  .detail-row{display:flex;flex-direction:column;gap:4px;padding:13px 15px}
  .detail-key{font-size:.72rem;letter-spacing:.08em}
  .detail-val{font-size:.94rem;line-height:1.7}

  /* FAQ 手风琴：加大点击区 */
  .faq-q{width:100%;text-align:left;min-height:44px;display:flex;
    align-items:center;justify-content:space-between;gap:12px}

  /* 作品卡：标题与描述不撑破 */
  .showcase-card h3{font-size:1.02rem;line-height:1.45}
  .showcase-card p{font-size:.86rem;line-height:1.7}
  .showcase-card-top{font-size:.68rem}

  /* 联系区 */
  .contact-card{padding:24px 20px}
  .contact-form input,.contact-form textarea,.contact-form button{width:100%!important}

  /* 页脚：竖排堆叠 */
  .footer-inner{flex-direction:column;align-items:flex-start;gap:10px;text-align:left}
  .footer-copy{font-size:.8rem;line-height:1.7}

  /* 复制提示条：手机上抬高一点，避开底部栏 */
  .footer{padding:26px 0}
}

/* 图片与媒体全局约束 */
img,svg,video,canvas{max-width:100%;height:auto}
img[width],img[height]{max-width:100%;height:auto!important}

/* 长串英文/URL 不断行会撑破容器 */
.hero-strip-lead,.proof-head,.section-kicker,.eyebrow,.path-cost,
.tier-unit,.mod-no,.cmp-note,.age-range{
  overflow-wrap:anywhere;word-break:break-word}

/* 超大屏下也不让容器过宽（4K/ 27寸） */
@media (min-width:1600px){
  .container{width:min(1200px,calc(100% - 64px))}
  .hero-strip,.hero-bottom{width:min(1200px,calc(100% - 64px));margin-inline:auto}
}