:root {
  --ink: #19142f;
  --muted: #77728e;
  --line: #ece9f7;
  --surface: #ffffff;
  --page: #f8f7fc;
  --purple: #7354f6;
  --purple-deep: #25105c;
  --purple-soft: #f0edff;
  --pink: #f26ca7;
  --shadow: 0 14px 40px rgba(43, 27, 97, .08);
}

* { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html { scroll-behavior: smooth; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif; color: var(--ink); background: var(--page); min-height: 100vh; padding-bottom: 92px; }
button, a { font: inherit; }
button { border: 0; }
a { color: inherit; text-decoration: none; }

/* 顶部导航 */
.top-nav { height: 62px; padding: 0 20px; display: flex; align-items: center; justify-content: space-between; position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.9); backdrop-filter: blur(18px); border-bottom: 1px solid rgba(230,226,246,.75); }
.brand-mark { display: inline-flex; align-items: center; gap: 8px; font-size: 17px; font-weight: 800; letter-spacing: .02em; }
.brand-dot { width: 30px; height: 30px; border-radius: 10px; display: grid; place-items: center; color: #fff; font-size: 15px; background: linear-gradient(135deg, #8d72ff, #5e37d9); box-shadow: 0 7px 16px rgba(111,78,232,.28); }
.nav-right { display: flex; align-items: center; gap: 16px; }
.nav-link { color: #736d8b; font-size: 13px; transition: color .2s ease; }
.nav-link:hover, .nav-link:active { color: var(--purple); }
.nav-account { padding: 8px 12px; border-radius: 999px; color: var(--purple); background: var(--purple-soft); font-weight: 700; }

/* 社会认同条 */
.marquee-bar { overflow: hidden; white-space: nowrap; padding: 8px 0; color: #7b6ad9; background: #f1eeff; border-bottom: 1px solid #e6e0ff; }
.marquee-content { display: inline-block; min-width: 100%; animation: marquee 28s linear infinite; font-size: 11px; }
.marquee-content span { margin-right: 40px; }
@keyframes marquee { 0% { transform: translateX(100%); } 100% { transform: translateX(-100%); } }

/* Hero */
.hero { position: relative; overflow: hidden; color: #fff; background: linear-gradient(135deg, #1c0e4d 0%, #38207b 46%, #7256ec 100%); border-radius: 0 0 34px 34px; }
.hero::after { content: ''; position: absolute; inset: auto 0 0; height: 110px; background: linear-gradient(180deg, transparent, rgba(12,5,43,.2)); pointer-events: none; }
.hero-inner { position: relative; z-index: 2; width: min(1120px, 100%); margin: 0 auto; padding: 44px 22px 48px; }
.hero-copy { position: relative; z-index: 3; max-width: 560px; }
.hero-badge { display: inline-flex; align-items: center; gap: 7px; padding: 7px 12px; border: 1px solid rgba(255,255,255,.2); border-radius: 999px; background: rgba(255,255,255,.12); color: rgba(255,255,255,.88); font-size: 11px; letter-spacing: .02em; }
.badge-dot { width: 6px; height: 6px; border-radius: 50%; background: #95f8cc; box-shadow: 0 0 0 4px rgba(149,248,204,.12); }
.hero-kicker { margin-top: 22px; color: #c9beff; font-size: 14px; font-weight: 700; letter-spacing: .08em; }
.hero h1 { margin-top: 6px; font-size: clamp(44px, 13vw, 72px); line-height: .98; font-weight: 900; letter-spacing: -.06em; }
.hero-sub { margin-top: 14px; color: rgba(255,255,255,.96); font-size: 20px; line-height: 1.35; font-weight: 700; }
.hero-desc { max-width: 340px; margin-top: 8px; color: rgba(255,255,255,.66); font-size: 13px; line-height: 1.65; }
.hero-price-row { display: flex; align-items: center; gap: 14px; margin-top: 27px; }
.hero-price { font-size: 52px; line-height: 1; font-weight: 900; letter-spacing: -.05em; }
.hero-price small { margin-right: 2px; font-size: 22px; vertical-align: 16px; letter-spacing: 0; }
.hero-price-tag { padding-left: 14px; border-left: 1px solid rgba(255,255,255,.25); color: rgba(255,255,255,.74); font-size: 12px; line-height: 1.55; }
.hero-btn { display: inline-flex; align-items: center; gap: 8px; margin-top: 26px; padding: 14px 24px; border-radius: 14px; color: #3a1a95; background: #fff; font-size: 15px; font-weight: 800; cursor: pointer; box-shadow: 0 12px 26px rgba(13,5,56,.26); transition: transform .2s, box-shadow .2s; }
.hero-btn:hover { transform: translateY(-2px); box-shadow: 0 16px 30px rgba(13,5,56,.34); }
.hero-btn:active { transform: scale(.98); }
.hero-proof { display: flex; flex-wrap: wrap; gap: 10px 16px; margin-top: 18px; color: rgba(255,255,255,.68); font-size: 11px; }
.hero-glow { position: absolute; border-radius: 50%; filter: blur(4px); pointer-events: none; }
.hero-glow-one { width: 320px; height: 320px; top: -160px; right: -110px; background: rgba(154,132,255,.26); }
.hero-glow-two { width: 220px; height: 220px; bottom: -130px; left: 15%; background: rgba(243,116,193,.16); }
.hero-visual { position: relative; width: 276px; height: 220px; margin: 38px auto -12px; }
.visual-orbit { position: absolute; border: 1px solid rgba(255,255,255,.18); border-radius: 50%; transform: rotate(-22deg); }
.orbit-one { inset: 2px -22px 0 28px; }
.orbit-two { inset: 22px 10px 12px -14px; transform: rotate(38deg); }
.visual-card { position: absolute; border: 1px solid rgba(255,255,255,.18); border-radius: 18px; background: rgba(255,255,255,.13); box-shadow: 0 20px 48px rgba(12,3,56,.26); backdrop-filter: blur(14px); }
.visual-card-main { inset: 18px 27px 12px 22px; padding: 10px; transform: rotate(-5deg); }
.visual-card-top { display: flex; align-items: center; gap: 7px; color: rgba(255,255,255,.8); font-size: 9px; }
.mini-logo { display: grid; place-items: center; width: 18px; height: 18px; border-radius: 6px; color: #4921ad; background: #fff; font-size: 10px; font-weight: 900; }
.visual-check { margin-left: auto; display: grid; place-items: center; width: 17px; height: 17px; border-radius: 50%; background: #a3f1c9; color: #226b4a; font-size: 10px; font-weight: 900; }
.visual-screen { height: 140px; margin-top: 9px; padding: 17px 15px; overflow: hidden; border-radius: 13px; background: linear-gradient(160deg, #f4efff, #c6b5ff); color: #302064; }
.screen-label { font-size: 7px; letter-spacing: .16em; font-weight: 800; opacity: .55; }
.screen-title { margin-top: 15px; font-size: 21px; line-height: 1.08; font-weight: 900; letter-spacing: -.05em; }
.screen-title em { color: #754bda; font-style: normal; }
.screen-progress { height: 5px; margin-top: 18px; border-radius: 99px; background: rgba(80,45,163,.14); }
.screen-progress span { display: block; width: 62%; height: 100%; border-radius: inherit; background: #7651df; }
.screen-meta { display: flex; justify-content: space-between; margin-top: 10px; color: #745f9e; font-size: 8px; }
.floating-pill { position: absolute; padding: 7px 10px; border: 1px solid rgba(255,255,255,.2); border-radius: 999px; color: #fff; background: rgba(30,14,79,.55); box-shadow: 0 10px 24px rgba(9,2,40,.2); font-size: 10px; font-weight: 700; backdrop-filter: blur(10px); }
.pill-free { top: 26px; left: 0; transform: rotate(-5deg); }
.pill-lock { right: 0; bottom: 26px; transform: rotate(5deg); }

/* 公共布局 */
.trust-strip { display: grid; grid-template-columns: repeat(4, 1fr); width: min(930px, calc(100% - 32px)); margin: -1px auto 0; padding: 17px 4px; position: relative; z-index: 4; border: 1px solid rgba(226,220,247,.8); border-radius: 18px; background: rgba(255,255,255,.94); box-shadow: var(--shadow); text-align: center; }
.trust-strip div { display: flex; flex-direction: column; gap: 3px; border-right: 1px solid var(--line); }
.trust-strip div:last-child { border-right: 0; }
.trust-strip strong { color: var(--purple); font-size: 19px; line-height: 1; }
.trust-strip span { color: #9690aa; font-size: 10px; }
.section { width: min(1120px, calc(100% - 32px)); margin: 0 auto; padding-top: 54px; scroll-margin-top: 72px; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin-bottom: 20px; }
.section-heading-stack { align-items: start; flex-direction: column; gap: 5px; }
.section-eyebrow { color: var(--purple); font-size: 10px; font-weight: 800; letter-spacing: .14em; }
.section-title { margin-top: 6px; color: var(--ink); font-size: 25px; line-height: 1.2; letter-spacing: -.04em; }
.section-sub { color: var(--muted); font-size: 12px; line-height: 1.7; }
.ui-design-section { padding-top: 36px; }.paper-ui { position: relative; width: min(100%, 560px); aspect-ratio: .75 / 1; margin: 0 auto; overflow: hidden; border: 1px solid #e5d8cc; background: linear-gradient(105deg, #f6f1e9 0%, #fffdf8 48%, #eee7dc 100%); box-shadow: 0 18px 36px rgba(76,52,37,.16), inset 0 0 36px rgba(130,94,65,.08); color: #5b5149; font-family: Georgia, 'Songti SC', 'SimSun', serif; }.paper-ui::before { content: ''; position: absolute; inset: 0; opacity: .25; pointer-events: none; background-image: radial-gradient(rgba(112,82,58,.22) .5px, transparent .7px); background-size: 5px 5px; mix-blend-mode: multiply; }.paper-ui-topline { position: absolute; top: 3.2%; right: 7%; left: 7%; display: flex; justify-content: space-between; color: #a19488; font-family: -apple-system, BlinkMacSystemFont, 'Microsoft YaHei', sans-serif; font-size: clamp(7px, 1.55vw, 11px); letter-spacing: .12em; }.paper-list { position: absolute; z-index: 1; top: 8%; right: 7%; bottom: 8%; left: 7%; display: flex; flex-direction: column; justify-content: space-between; }.paper-row { display: grid; grid-template-columns: max-content max-content minmax(8px, 1fr) max-content; align-items: end; gap: clamp(2px, .8vw, 5px); min-height: 2.45%; color: #70665d; font-size: clamp(7px, 1.5vw, 11px); line-height: 1; white-space: nowrap; }.paper-row-name { color: #847a70; }.paper-row i { min-width: 8px; margin-bottom: 1px; border-bottom: 1px dotted rgba(106,91,77,.6); }.paper-callout { position: absolute; z-index: 3; padding: clamp(7px, 1.8vw, 13px) clamp(10px, 2.2vw, 18px); color: #56251f; background: rgba(235,101,94,.92); box-shadow: 0 4px 7px rgba(129,55,45,.12); font-family: -apple-system, BlinkMacSystemFont, 'Microsoft YaHei', sans-serif; font-size: clamp(13px, 3.2vw, 26px); font-weight: 900; line-height: 1.12; letter-spacing: -.06em; text-align: center; transform: rotate(-1.2deg); }.paper-callout strong { font-size: 1.08em; }.paper-callout-top { top: 15%; left: 17%; width: 70%; }.paper-callout-mid { top: 37%; left: 29%; width: 48%; transform: rotate(-.8deg); }.paper-callout-wide { top: 46%; left: 4%; width: 92%; transform: rotate(.7deg); }.paper-callout-bottom { top: 57%; left: 19%; width: 66%; transform: rotate(-.7deg); }.paper-ui-footer { position: absolute; right: 0; bottom: 2%; left: 0; z-index: 2; color: #9d9187; font-family: -apple-system, BlinkMacSystemFont, 'Microsoft YaHei', sans-serif; font-size: clamp(8px, 1.7vw, 12px); text-align: center; }

/* 卖点 */
.features-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.feature-card { min-height: 142px; padding: 17px 13px; border: 1px solid rgba(231,227,244,.8); border-radius: 16px; background: var(--surface); box-shadow: 0 8px 22px rgba(40,28,83,.04); }
.feature-icon { display: grid; place-items: center; width: 38px; height: 38px; margin-bottom: 12px; border-radius: 12px; font-size: 20px; }
.icon-purple { background: #f0ebff; }.icon-pink { background: #fff0f7; }.icon-blue { background: #eaf4ff; }.icon-gold { background: #fff6dc; }
.feature-name { font-size: 14px; font-weight: 800; }.feature-desc { margin-top: 5px; color: #8b859f; font-size: 11px; line-height: 1.55; }

/* 章节目录 */
.chapter-list { display: flex; flex-direction: column; gap: 10px; }
.chapter-item { display: flex; align-items: center; min-height: 92px; padding: 13px; border: 1px solid rgba(231,227,244,.9); border-radius: 17px; background: var(--surface); box-shadow: 0 8px 22px rgba(40,28,83,.04); cursor: pointer; transition: transform .18s, box-shadow .18s, border-color .18s; }
.chapter-item:hover { transform: translateY(-2px); border-color: #cfc3ff; box-shadow: 0 12px 26px rgba(65,37,151,.1); }.chapter-item:active { transform: scale(.99); }
.chapter-thumb { display: grid; place-items: center; flex: 0 0 58px; width: 58px; height: 58px; margin-right: 12px; border-radius: 14px; color: #7451da; background: linear-gradient(135deg, #f2eeff, #e3dcff); font-size: 24px; }
.chapter-info { min-width: 0; flex: 1; }.chapter-top-row { display: flex; align-items: center; gap: 7px; margin-bottom: 4px; }.chapter-num { color: var(--purple); font-size: 10px; font-weight: 900; letter-spacing: .06em; }.chapter-title { overflow: hidden; font-size: 14px; font-weight: 800; text-overflow: ellipsis; white-space: nowrap; }.chapter-desc { overflow: hidden; margin-bottom: 7px; color: #928ca6; font-size: 11px; text-overflow: ellipsis; white-space: nowrap; }.chapter-tags { display: flex; gap: 5px; }.chapter-tag { padding: 3px 6px; border-radius: 6px; color: #857f98; background: #f6f5fa; font-size: 9px; }.chapter-right { flex-shrink: 0; margin-left: 8px; text-align: right; }.chapter-status { display: inline-block; padding: 6px 8px; border-radius: 8px; font-size: 10px; font-weight: 700; white-space: nowrap; }.chapter-status.unlocked { color: #228a5e; background: #e9fbf1; }.chapter-status.free { color: #c57d17; background: #fff6e3; }.chapter-status.locked { color: #7d719b; background: #f2effc; }
.loading { padding: 40px; color: #9993aa; font-size: 13px; text-align: center; }

/* 预览 */
.preview-grid { display: grid; grid-template-columns: 1.25fr 1fr 1fr; gap: 12px; }.preview-card { overflow: hidden; border: 1px solid rgba(231,227,244,.9); border-radius: 17px; background: #fff; box-shadow: 0 8px 22px rgba(40,28,83,.04); }.preview-art { position: relative; display: flex; align-items: center; justify-content: center; height: 150px; overflow: hidden; }.preview-art::before, .preview-art::after { content: ''; position: absolute; border-radius: 50%; background: rgba(255,255,255,.18); }.preview-art::before { width: 130px; height: 130px; right: -32px; top: -46px; }.preview-art::after { width: 80px; height: 80px; left: -20px; bottom: -34px; }.preview-art-purple { align-items: start; justify-content: start; padding: 25px 20px; color: #fff; background: linear-gradient(135deg, #372079, #8b6aff); }.preview-art-blue { color: #547bd5; background: linear-gradient(135deg, #edf4ff, #d7e5ff); }.preview-art-pink { color: #d665a0; background: linear-gradient(135deg, #fff0f7, #ffd5e9); }.preview-art-label { position: relative; z-index: 1; align-self: start; font-size: 8px; font-weight: 800; letter-spacing: .16em; opacity: .75; }.preview-art strong { position: absolute; z-index: 1; left: 20px; bottom: 22px; font-size: 23px; line-height: 1.1; letter-spacing: -.04em; }.preview-art-shape { position: absolute; right: 24px; bottom: 15px; color: rgba(255,255,255,.72); font-size: 56px; line-height: 1; }.preview-icon-large { position: relative; z-index: 1; font-size: 43px; }.preview-lock { position: absolute; right: 12px; top: 12px; z-index: 1; display: grid; place-items: center; width: 26px; height: 26px; border-radius: 50%; background: rgba(255,255,255,.65); font-size: 12px; }.preview-card-body { padding: 14px; }.preview-card-tag { color: var(--purple); font-size: 9px; font-weight: 800; }.preview-name { margin-top: 5px; font-size: 13px; font-weight: 800; }.preview-desc { margin-top: 6px; color: #918ba4; font-size: 11px; line-height: 1.55; }.preview-locked-note { display: flex; align-items: center; gap: 8px; margin-top: 13px; padding: 12px 13px; border: 1px dashed #d6ccff; border-radius: 13px; color: #766e8f; background: #fbfaff; font-size: 11px; line-height: 1.4; }.lock-bubble { display: grid; place-items: center; flex: 0 0 25px; width: 25px; height: 25px; border-radius: 50%; background: #eeeaff; font-size: 12px; }.text-cta { margin-left: auto; color: var(--purple); background: transparent; font-size: 11px; font-weight: 800; white-space: nowrap; cursor: pointer; }

/* 权益与购买 */
.benefits-grid { display: grid; grid-template-columns: repeat(5, 1fr); overflow: hidden; border: 1px solid rgba(231,227,244,.9); border-radius: 17px; background: #fff; box-shadow: 0 8px 22px rgba(40,28,83,.04); }.benefit-item { display: flex; flex-direction: column; align-items: center; gap: 7px; padding: 17px 8px; border-right: 1px solid var(--line); color: #6e6881; font-size: 10px; }.benefit-item:last-child { border-right: 0; }.benefit-icon { font-size: 22px; }.purchase-card { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-top: 14px; padding: 18px; border-radius: 18px; color: #fff; background: linear-gradient(110deg, #29105f, #6e4bd8); box-shadow: 0 14px 28px rgba(62,33,153,.2); }.purchase-card div:first-child { display: flex; flex-direction: column; gap: 4px; }.purchase-label { color: #c9bdff; font-size: 10px; }.purchase-card strong { font-size: 28px; line-height: 1; letter-spacing: -.04em; }.purchase-card strong span { font-size: 30px; }.purchase-card div:first-child > span:last-child { color: rgba(255,255,255,.62); font-size: 10px; }.purchase-btn { padding: 12px 17px; border-radius: 12px; color: #3f219b; background: #fff; font-size: 12px; font-weight: 800; white-space: nowrap; cursor: pointer; }

/* FAQ */
.faq-list { display: flex; flex-direction: column; gap: 9px; }.faq-item { overflow: hidden; border: 1px solid rgba(231,227,244,.9); border-radius: 14px; background: #fff; }.faq-q { display: flex; align-items: center; justify-content: space-between; padding: 15px 16px; color: #3e3855; font-size: 13px; font-weight: 700; cursor: pointer; }.faq-arrow { color: #aaa2bd; font-size: 19px; font-weight: 400; transition: transform .2s; }.faq-item.open .faq-arrow { transform: rotate(45deg); }.faq-a { max-height: 0; overflow: hidden; padding: 0 16px; color: #9089a4; font-size: 12px; line-height: 1.7; transition: all .25s; }.faq-item.open .faq-a { max-height: 120px; padding-bottom: 15px; }

/* 底部固定栏 */
.bottom-bar { position: fixed; right: 0; bottom: 0; left: 0; z-index: 100; display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 10px max(16px, calc((100vw - 1120px) / 2)); border-top: 1px solid rgba(227,222,242,.95); background: rgba(255,255,255,.95); box-shadow: 0 -8px 28px rgba(36,24,84,.1); backdrop-filter: blur(18px); }.bottom-price-num { color: var(--purple); font-size: 22px; font-weight: 900; letter-spacing: -.04em; }.bottom-price-tag { margin-top: 2px; color: #938ca5; font-size: 10px; }.bottom-btn { min-width: 152px; padding: 13px 18px; border-radius: 12px; color: #fff; background: linear-gradient(135deg, #7354f6, #9a63d9); box-shadow: 0 8px 18px rgba(105,72,226,.28); font-size: 13px; font-weight: 800; cursor: pointer; transition: transform .2s; }.bottom-btn:hover { transform: translateY(-1px); }.bottom-btn.unlocked { background: linear-gradient(135deg, #35ad79, #23825a); box-shadow: 0 8px 18px rgba(35,130,90,.24); }

/* 弹窗与支付 */
.modal { display: none; position: fixed; inset: 0; z-index: 200; align-items: flex-end; justify-content: center; padding: 0; background: rgba(20,12,45,.58); }.modal.show { display: flex; }.modal-content { width: 100%; max-width: 520px; max-height: 88vh; overflow-y: auto; border-radius: 22px 22px 0 0; background: #fff; animation: slideUp .25s ease; }.modal-header { position: sticky; top: 0; z-index: 1; display: flex; align-items: center; justify-content: space-between; padding: 17px 20px; border-bottom: 1px solid #eeeaf5; background: rgba(255,255,255,.95); backdrop-filter: blur(12px); }.modal-header h3 { font-size: 16px; }.close-btn { display: grid; place-items: center; width: 31px; height: 31px; border-radius: 50%; color: #777; background: #f2f0f6; font-size: 20px; cursor: pointer; }.modal-body { padding: 22px; }.locked-tip { padding: 35px 20px; text-align: center; }.lock-icon { margin-bottom: 14px; font-size: 46px; }.locked-tip p { margin-bottom: 20px; color: #6d667d; font-size: 14px; }.pay-btn-small { padding: 10px 28px; border-radius: 22px; color: #fff; background: linear-gradient(135deg, #7354f6, #8c62db); font-size: 13px; cursor: pointer; }.content-body { font-size: 14px; line-height: 1.8; }.content-body p { margin-bottom: 12px; }.content-body img, .content-body video { display: block; max-width: 100%; margin: 10px 0; border-radius: 10px; }.pay-modal .modal-body { text-align: center; }.pay-brand { color: var(--purple); font-size: 20px; font-weight: 900; }.pay-sub { margin: 4px 0 9px; color: #9992aa; font-size: 12px; }.pay-amount { margin-bottom: 18px; color: var(--ink); font-size: 34px; font-weight: 900; }.qr-area { margin-bottom: 17px; }.qr-placeholder { display: flex; align-items: center; justify-content: center; width: 200px; height: 200px; margin: 0 auto 10px; border: 2px solid #eeeaf5; border-radius: 14px; background: #faf9fc; }.qr-img { width: 190px; height: 190px; border-radius: 8px; }.qr-text { padding: 10px; color: #9992aa; font-size: 11px; word-break: break-all; }.qr-tip, .mock-tip { color: #787187; font-size: 12px; }.pay-tabs { display: flex; margin-bottom: 16px; border-bottom: 2px solid #eeeaf5; }.pay-tab { flex: 1; padding: 9px 0; margin-bottom: -2px; border-bottom: 2px solid transparent; color: #9992aa; font-size: 13px; cursor: pointer; }.pay-tab.active { border-bottom-color: var(--purple); color: var(--purple); font-weight: 700; }.mock-pay-area { margin: 15px 0; }.mock-btn { margin-bottom: 7px; padding: 11px 30px; border-radius: 22px; color: #fff; background: var(--purple); font-size: 13px; cursor: pointer; }.order-info { display: flex; align-items: center; justify-content: space-between; padding-top: 14px; border-top: 1px solid #eeeaf5; color: #9992aa; font-size: 11px; }.refresh-btn { padding: 6px 12px; border-radius: 12px; color: #6f687c; background: #f3f1f6; font-size: 11px; cursor: pointer; }
@keyframes slideUp { from { transform: translateY(100%); } to { transform: translateY(0); } }
.footer { padding: 28px 20px 14px; color: #aaa4b6; font-size: 10px; text-align: center; }
body.paid .chapter-lock { display: none; }

@media (min-width: 680px) {
  .hero-inner { display: flex; align-items: center; justify-content: space-between; min-height: 520px; padding: 70px 36px; }.hero-visual { flex: 0 0 390px; width: 390px; height: 300px; margin: 0 35px 0 20px; transform: scale(1.12); }.visual-card-main { inset: 12px 54px 20px 40px; }.visual-screen { height: 198px; padding: 24px 20px; }.screen-title { margin-top: 21px; font-size: 29px; }.screen-progress { margin-top: 26px; }.pill-free { top: 34px; left: 0; }.pill-lock { right: 5px; bottom: 44px; }.section { padding-top: 72px; }.section-title { font-size: 30px; }.feature-card { padding: 20px; }.chapter-item { padding: 16px; }.chapter-thumb { flex-basis: 66px; width: 66px; height: 66px; }.modal { align-items: center; padding: 20px; }.modal-content { border-radius: 22px; }.bottom-bar { padding-right: max(24px, calc((100vw - 1120px) / 2)); padding-left: max(24px, calc((100vw - 1120px) / 2)); }
}

@media (max-width: 420px) {
  .top-nav { padding: 0 15px; }.nav-right { gap: 9px; }.nav-link { font-size: 11px; }.hero-inner { padding-right: 17px; padding-left: 17px; }.hero-visual { transform: scale(.94); margin-top: 28px; }.section, .trust-strip { width: calc(100% - 24px); }.section { padding-top: 46px; }.section-heading { margin-bottom: 16px; }.section-title { font-size: 23px; }.preview-grid { grid-template-columns: 1fr 1fr; }.preview-featured { grid-column: 1 / -1; }.preview-featured .preview-art { height: 168px; }.preview-card:not(.preview-featured) .preview-art { height: 110px; }.preview-card:not(.preview-featured) .preview-card-body { padding: 11px; }.preview-card:not(.preview-featured) .preview-desc { font-size: 10px; }.preview-locked-note { align-items: flex-start; flex-wrap: wrap; }.text-cta { margin-left: 33px; }.purchase-card { align-items: flex-start; flex-direction: column; }.purchase-btn { width: 100%; }.bottom-bar { padding: 9px 12px; }.bottom-btn { min-width: 142px; padding-right: 12px; padding-left: 12px; font-size: 12px; }.bottom-price-num { font-size: 20px; }.bottom-price-tag { font-size: 9px; }
}

@media (max-width: 350px) {
  .hero-proof { gap: 6px 9px; font-size: 10px; }.hero-btn { width: 100%; justify-content: center; }.bottom-btn { min-width: 128px; }.chapter-thumb { flex-basis: 50px; width: 50px; height: 50px; margin-right: 8px; }.chapter-tags { display: none; }.chapter-status { padding: 5px 6px; font-size: 9px; }.benefit-item { padding-right: 4px; padding-left: 4px; font-size: 9px; }
}

.qr-image-link { display: block; line-height: 0; cursor: pointer; }
.payment-link-wrap { margin: -5px 0 16px; }
.payment-link { display: inline-flex; align-items: center; justify-content: center; padding: 9px 15px; border: 1px solid #d8ceff; border-radius: 999px; color: var(--purple); background: #f8f6ff; font-size: 12px; font-weight: 800; }

/* 首次进入页面的居中免费预览弹窗 */
.entry-modal { align-items: center; padding: 20px; z-index: 220; }
.entry-modal-card { position: relative; width: min(100%, 410px); padding: 18px; overflow: hidden; border: 1px solid rgba(224,216,255,.95); border-radius: 24px; background: #fff; box-shadow: 0 24px 70px rgba(28,13,79,.28); animation: entryPop .22s ease-out; }
.entry-close { position: absolute; top: 13px; right: 13px; z-index: 2; display: grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; color: #777085; background: rgba(255,255,255,.82); font-size: 20px; cursor: pointer; }
.entry-modal-badge { display: inline-flex; align-items: center; padding: 7px 11px; border-radius: 999px; color: #6950d4; background: #f0edff; font-size: 11px; font-weight: 800; }
.entry-preview-visual { display: grid; place-items: center; height: 170px; margin: 14px 0 16px; overflow: hidden; border-radius: 17px; background: linear-gradient(135deg, #291263, #7854ec); }
.entry-preview-visual.has-image { background: #f0ecff; }.entry-preview-visual img { width: 100%; height: 100%; object-fit: cover; }.entry-preview-placeholder { position: relative; width: 100%; height: 100%; padding: 24px; overflow: hidden; color: #fff; }.entry-preview-placeholder::after { content: '✦'; position: absolute; right: 25px; bottom: 4px; color: rgba(255,255,255,.36); font-size: 92px; line-height: 1; }.entry-preview-placeholder span { color: #c9bbff; font-size: 11px; font-weight: 900; letter-spacing: .14em; }.entry-preview-placeholder strong { display: block; position: relative; z-index: 1; margin-top: 18px; font-size: 27px; line-height: 1.08; letter-spacing: -.05em; }.entry-preview-placeholder small { display: inline-block; position: relative; z-index: 1; margin-top: 15px; padding: 6px 9px; border: 1px solid rgba(255,255,255,.2); border-radius: 999px; color: rgba(255,255,255,.76); background: rgba(255,255,255,.1); font-size: 10px; }
.entry-modal-copy h2 { color: var(--ink); font-size: 21px; line-height: 1.25; letter-spacing: -.04em; }.entry-modal-copy p { margin-top: 8px; color: #878097; font-size: 12px; line-height: 1.7; }.entry-modal-meta { display: flex; flex-wrap: wrap; gap: 8px 12px; margin-top: 13px; color: #77708c; font-size: 10px; }.entry-open-btn { width: 100%; margin-top: 18px; padding: 13px 16px; border-radius: 13px; color: #fff; background: linear-gradient(135deg, #7354f6, #9560dd); box-shadow: 0 10px 20px rgba(107,73,224,.22); font-size: 14px; font-weight: 800; cursor: pointer; }.entry-later { display: block; margin: 11px auto 0; color: #9991a8; background: transparent; font-size: 11px; cursor: pointer; }
.ad-preview-link { display: block; color: inherit; text-decoration: none; }.ad-preview-link.disabled { cursor: default; pointer-events: none; }
.ad-preview-link .entry-preview-visual.has-image { background: #faf9ff; }.ad-preview-link .entry-preview-visual.has-image img { object-fit: contain; }
.content-preview-badge { display: inline-flex; margin-bottom: 13px; padding: 6px 9px; border-radius: 999px; color: #6850d5; background: #f0edff; font-size: 11px; font-weight: 800; }
@keyframes entryPop { from { opacity: 0; transform: translateY(10px) scale(.97); } to { opacity: 1; transform: translateY(0) scale(1); } }

/* 参考图移动端红白 UI 主题 */
:root { --ink: #191919; --muted: #777477; --line: #eee6e3; --surface: #fff; --page: #fff9f7; --brand: #d92d2d; --brand-dark: #b91f23; --brand-soft: #fff0ed; --shadow: 0 12px 30px rgba(117,47,37,.08); }
body { color: var(--ink); background: var(--page); padding-bottom: 76px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.mobile-header { position: relative; height: auto; padding: 8px 18px 13px; border-bottom: 0; background: #fffaf9; box-shadow: none; }
.ios-status { display: flex; align-items: center; justify-content: space-between; height: 22px; color: #111; font-size: 13px; font-weight: 800; letter-spacing: .02em; }
.status-icons { font-size: 12px; letter-spacing: 2px; }
.brand-row { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-top: 7px; }
.brand-mark { display: inline-flex; align-items: center; gap: 11px; min-width: 0; color: #141414; }
.logo-book { position: relative; display: inline-block; flex: 0 0 52px; width: 52px; height: 39px; border: 4px solid var(--brand); border-radius: 20px 20px 5px 5px; transform: skewY(-2deg); }
.logo-book::before { content: ''; position: absolute; top: 2px; bottom: -4px; left: 50%; width: 4px; background: var(--brand); transform: translateX(-50%) skewY(7deg); }
.logo-book::after { content: ''; position: absolute; right: -3px; bottom: -5px; left: -3px; height: 7px; border-bottom: 3px solid var(--brand); border-radius: 50%; }
.brand-copy { display: flex; min-width: 0; flex-direction: column; gap: 2px; }
.brand-copy strong { overflow: hidden; font-size: 22px; font-weight: 900; letter-spacing: -.05em; text-overflow: ellipsis; white-space: nowrap; }
.brand-copy small { color: #8d8988; font-size: 12px; white-space: nowrap; }
.header-actions { display: flex; align-items: center; gap: 18px; }
.header-icon { position: relative; width: 29px; height: 29px; padding: 0; color: #151515; background: transparent; cursor: pointer; }
.icon-search::before { content: ''; position: absolute; top: 2px; left: 2px; width: 17px; height: 17px; border: 3px solid #111; border-radius: 50%; }
.icon-search::after { content: ''; position: absolute; right: 1px; bottom: 2px; width: 11px; height: 3px; border-radius: 4px; background: #111; transform: rotate(45deg); }
.icon-menu { display: flex; flex-direction: column; justify-content: center; gap: 5px; }
.icon-menu i { display: block; width: 29px; height: 3px; border-radius: 4px; background: #111; }
.marquee-bar { display: none !important; }
.reference-hero { overflow: visible; padding: 0 15px 20px; border-radius: 0; color: #fff; background: var(--page); }
.hero-cover { position: relative; height: min(58vw, 350px); min-height: 230px; overflow: hidden; border-radius: 19px; background: linear-gradient(110deg, #452d23 0%, #9a6848 40%, #2b211d 100%); box-shadow: var(--shadow); }
.hero-cover::before { content: ''; position: absolute; inset: -10% -5%; opacity: .55; background: linear-gradient(122deg, transparent 0 25%, rgba(255,229,203,.22) 26% 32%, transparent 33% 48%, rgba(48,25,18,.5) 49% 64%, transparent 65%), linear-gradient(170deg, rgba(255,255,255,.2), transparent 35%); transform: rotate(-5deg) scale(1.12); }
.hero-paper-lines { position: absolute; inset: 0; opacity: .24; background: repeating-linear-gradient(174deg, transparent 0 13px, rgba(255,246,233,.5) 14px 15px); transform: rotate(-8deg) scale(1.3); }
.hero-red-strip { position: absolute; z-index: 2; padding: 8px 14px; color: #fff7e9; background: linear-gradient(100deg, #cc2728, #ef4037); box-shadow: 0 4px 8px rgba(50,13,10,.2); font-size: clamp(18px, 4vw, 30px); font-weight: 900; line-height: 1.15; letter-spacing: .01em; text-align: center; transform: rotate(-1.8deg); }
.hero-red-strip strong { font-size: 1.08em; }
.hero-red-one { top: 10%; left: 24%; width: 54%; }.hero-red-two { top: 47%; left: 37%; width: 30%; transform: rotate(-1deg); }.hero-red-three { top: 61%; left: 15%; width: 71%; transform: rotate(1deg); }.hero-red-four { top: 76%; left: 28%; width: 50%; transform: rotate(-1deg); }
.hero-side-copy { position: absolute; z-index: 2; top: 20%; right: 4%; color: rgba(255,243,218,.9); font-family: 'KaiTi', 'STKaiti', serif; font-size: clamp(16px, 3.8vw, 29px); line-height: 1.45; text-align: center; transform: rotate(5deg); }
.hero-btn { display: none !important; }
.directory-section { padding: 0 15px; }
.directory-card { overflow: hidden; border-radius: 19px; background: #fff; box-shadow: var(--shadow); }
.directory-header { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 16px 17px 15px; color: #fff; background: linear-gradient(100deg, #d92e2d, #f04437); }
.directory-header > span { font-size: 12px; white-space: nowrap; }
.directory-title { display: flex; align-items: center; gap: 10px; min-width: 0; }.directory-title strong { font-size: 22px; letter-spacing: -.04em; }.directory-book { display: grid; place-items: center; width: 31px; height: 31px; border: 2px solid #fff; border-radius: 8px; font-size: 18px; }
.directory-list { padding: 13px 17px 16px; }
.chapter-item { display: grid; grid-template-columns: max-content max-content minmax(8px,1fr) max-content max-content; align-items: center; gap: 7px; width: 100%; min-height: 32px; padding: 6px 0; border: 0; border-radius: 0; color: #292929; background: transparent; box-shadow: none; text-align: left; cursor: pointer; transition: color .15s, transform .15s; }
.chapter-item:hover { border: 0; box-shadow: none; transform: translateX(2px); }.chapter-item:active { transform: scale(.99); }
.chapter-num { font-size: 16px; white-space: nowrap; }.chapter-title { overflow: hidden; max-width: 170px; font-size: 16px; text-overflow: ellipsis; white-space: nowrap; }.chapter-leader { min-width: 8px; align-self: center; margin-top: 7px; border-bottom: 2px dotted #c7c4c4; }.chapter-page { color: #777; font-size: 15px; }.chapter-arrow { color: #777; font-size: 27px; line-height: .7; }.chapter-status { display: inline-flex; align-items: center; justify-content: center; min-width: 26px; padding: 2px 4px; border-radius: 4px; font-size: 9px; font-weight: 800; white-space: nowrap; }.chapter-status.free { color: var(--brand); background: #fff0ec; }.chapter-status.locked { color: #999; background: #f5f4f4; }.chapter-status.unlocked { color: #1b9b63; background: #edfbf3; }.loading { padding: 30px; color: #999; text-align: center; }
.membership-cta { display: flex; align-items: center; justify-content: space-between; gap: 9px; width: calc(100% - 30px); margin: 16px auto 0; padding: 17px 16px; border-radius: 18px; color: #fff; background: linear-gradient(100deg, #d92c2d, #f34a38); box-shadow: 0 9px 20px rgba(205,47,42,.2); cursor: pointer; }.membership-cta strong { flex: 1; font-size: clamp(14px, 3.5vw, 22px); text-align: center; }.cta-play { display: grid; place-items: center; flex: 0 0 30px; width: 30px; height: 30px; border: 3px solid #fff; border-radius: 50%; font-size: 13px; }.cta-arrow { font-size: 34px; line-height: .6; }
.feature-strip { display: grid; grid-template-columns: repeat(4, 1fr); width: calc(100% - 30px); margin: 7px auto 0; padding: 20px 4px 16px; border-bottom: 1px solid #f1e6e2; }.feature-strip-item { display: flex; flex-direction: column; align-items: center; gap: 5px; min-width: 0; border-right: 1px solid #f1e6e2; }.feature-strip-item:last-child { border-right: 0; }.feature-line-icon { display: grid; place-items: center; width: 40px; height: 40px; color: var(--brand); font-size: 32px; line-height: 1; }.feature-strip-item strong { font-size: 14px; white-space: nowrap; }.feature-strip-item small { color: #8f8b8a; font-size: 11px; white-space: nowrap; }
.section { width: calc(100% - 30px); padding-top: 31px; scroll-margin-top: 20px; }.section-title-row { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 15px; }.section-title-row h2 { color: #171717; font-size: 23px; letter-spacing: -.05em; }.section-title-row button, .section-title-row > button { padding: 0; color: #7e7a7a; background: transparent; font-size: 13px; cursor: pointer; }.section-note { color: #8f8b8a; font-size: 12px; }
.reason-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }.reason-card { display: flex; align-items: center; gap: 11px; min-height: 92px; padding: 13px; border: 1px solid #f3e9e6; border-radius: 17px; background: #fff; box-shadow: 0 8px 20px rgba(105,53,42,.04); }.reason-icon { display: grid; place-items: center; flex: 0 0 48px; width: 48px; height: 48px; border-radius: 13px; color: var(--brand); background: #fff0ed; font-size: 31px; font-weight: 900; }.reason-light { color: #f2a91b; background: #fff8e5; }.reason-shield { color: #de3c38; background: #fff0ef; }.reason-heart { color: #df3334; background: #fff0ed; }.reason-card strong { font-size: 15px; }.reason-card p { margin-top: 4px; color: #8c8785; font-size: 11px; line-height: 1.35; }
.actual-content-section { padding-top: 28px; }.content-summary { display: flex; align-items: center; gap: 12px; padding: 15px; border: 1px solid #f3e9e6; border-radius: 16px; background: #fff; }.content-summary > span { font-size: 27px; }.content-summary div { flex: 1; }.content-summary strong { font-size: 15px; }.content-summary p { margin-top: 4px; color: #8d8784; font-size: 11px; }.content-summary button { padding: 7px 9px; border-radius: 9px; color: var(--brand); background: #fff0ed; font-size: 11px; font-weight: 800; }
.reference-preview-grid { grid-template-columns: 1.4fr 1fr; }.preview-art-red { color: #fff; background: linear-gradient(135deg, #d92f2d, #f26351); }.preview-art-soft { color: #d33e3c; background: #fff0ed; }.reference-preview-grid .preview-art { height: 125px; }.reference-preview-grid .preview-art strong { font-size: 22px; }.preview-card, .faq-item, .benefits-grid, .purchase-card { border-color: #f1e6e2; box-shadow: 0 8px 20px rgba(105,53,42,.04); }.preview-card-tag { color: var(--brand); }
.benefits-grid { grid-template-columns: repeat(4, 1fr); }.benefit-item { color: #555; border-color: #f1e6e2; }.benefit-icon { color: var(--brand); }.purchase-card { color: #fff; background: linear-gradient(100deg, #d92e2d, #ef4939); }.purchase-label { color: #ffd9d1; }.purchase-btn { color: var(--brand-dark); }
.bottom-bar { right: 0; left: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; height: 72px; padding: 7px 8px max(7px, env(safe-area-inset-bottom)); border-top: 1px solid #eee5e2; background: rgba(255,255,255,.97); box-shadow: 0 -5px 20px rgba(98,47,38,.08); backdrop-filter: blur(16px); }.bottom-nav-item { display: flex; align-items: center; justify-content: center; gap: 3px; min-width: 0; flex-direction: column; color: #777; background: transparent; font-size: 25px; cursor: pointer; }.bottom-nav-item small { font-size: 11px; }.bottom-nav-item.active, .bottom-nav-item.bottom-nav-member { color: var(--brand); }.bottom-nav-member span { line-height: 1; }.bottom-nav-member.unlocked { color: #1b9b63; }
.footer { padding-bottom: 17px; color: #aaa2a0; }
.modal-header h3, .pay-brand { color: var(--brand); }.pay-btn-small, .mock-btn { background: linear-gradient(135deg, #d92e2d, #ef4b3c); }.entry-modal-badge { color: var(--brand); background: #fff0ed; }.entry-open-btn { background: linear-gradient(135deg, #d92e2d, #ef4b3c); }.content-preview-badge { color: var(--brand); background: #fff0ed; }

@media (min-width: 680px) { .mobile-header, .reference-hero, .directory-section, .membership-cta, .feature-strip, .section { max-width: 680px; margin-right: auto; margin-left: auto; }.mobile-header { padding-right: 24px; padding-left: 24px; }.hero-cover { height: 360px; }.directory-section { padding-right: 0; padding-left: 0; }.membership-cta, .feature-strip, .section { width: calc(100% - 30px); }.bottom-bar { max-width: 680px; right: 50%; left: auto; width: 680px; transform: translateX(50%); } }
@media (max-width: 390px) { .brand-copy strong { font-size: 20px; }.brand-copy small { font-size: 10px; }.directory-header { padding-right: 13px; padding-left: 13px; }.directory-title strong { font-size: 18px; }.directory-header > span { font-size: 10px; }.directory-list { padding-right: 13px; padding-left: 13px; }.chapter-item { gap: 4px; }.chapter-num, .chapter-title { font-size: 13px; }.chapter-title { max-width: 115px; }.chapter-page { font-size: 13px; }.feature-strip-item strong { font-size: 12px; }.feature-strip-item small { font-size: 9px; }.feature-line-icon { width: 34px; height: 34px; font-size: 27px; }.reason-card { padding: 9px; }.reason-icon { flex-basis: 40px; width: 40px; height: 40px; font-size: 26px; }.reason-card strong { font-size: 13px; }.reason-card p { font-size: 10px; }.hero-red-strip { font-size: 16px; }.hero-side-copy { font-size: 13px; } }