:root {
    color-scheme: light;
    --out-bg: #f8f6f3;
    --out-paper: #fffdfa;
    --out-ink: #43374c;
    --out-muted: #74677b;
    --out-line: #dfd7df;
    --out-tint: #eee9ef;
    --out-accent: #6b5b73;
    --out-green: #526e5c;
    --out-green-bg: #eaf0e9;
    --out-inverse: #faf6f0;
    --out-shadow: 0 20px 64px rgba(107,91,115,.10);
}
html.dark {
    color-scheme: dark;
    --out-bg: #211e25;
    --out-paper: #2b2730;
    --out-ink: #f1eaf2;
    --out-muted: #bdb0c2;
    --out-line: #49404f;
    --out-tint: #36303e;
    --out-accent: #cebad7;
    --out-green: #b5cdb8;
    --out-green-bg: #303e35;
    --tm-primary: #cebad7;
    --tm-primary-dark: #dfcee6;
    --tm-bg-primary: #211e25;
    --tm-bg-secondary: #2b2730;
    --tm-bg-tertiary: #36303e;
    --tm-text-primary: #f1eaf2;
    --tm-text-secondary: #bdb0c2;
    --tm-border-light: #49404f;
}
[hidden] { display: none !important; }
.out-page { margin: 0; background: var(--out-bg); color: var(--out-ink); font-family: -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif; line-height: 1.8; -webkit-font-smoothing: antialiased; }
.out-page *, .out-home * { box-sizing: border-box; }
.out-page a { color: inherit; text-decoration: none; }
.out-page button, .out-page a, .out-theme { -webkit-tap-highlight-color: transparent; }
.out-page button { font: inherit; cursor: pointer; }
.out-page h1, .out-page h2, .out-page h3, .out-page p, .out-page figure { margin: 0; }
.out-page h1, .out-page h2, .out-page h3, .out-serif { font-family: "Songti SC","Noto Serif CJK SC","SimSun",serif; }
.out-page a:focus-visible, .out-page button:focus-visible, .out-page summary:focus-visible, .out-page [tabindex]:focus-visible, .out-theme:focus-visible, .out-home a:focus-visible { outline: 3px solid var(--out-accent); outline-offset: 5px; }
.out-wrap { width: min(1120px, calc(100% - 64px)); margin: auto; }
.out-header { border-bottom: 1px solid var(--out-line); background: var(--out-bg); }
.out-header-inner { min-height: 88px; display: flex; align-items: center; gap: 30px; }
.out-brand { display: inline-flex; align-items: center; gap: 10px; font-size: 17px; font-weight: 650; white-space: nowrap; }
.out-brand img { width: 32px; height: 32px; }
.out-header-links { margin-left: auto; display: flex; gap: 24px; align-items: center; font-size: 14px; }
.out-header-links a[aria-current] { border-bottom: 1px solid var(--out-accent); }
.out-theme { padding: 9px 12px; min-height: 44px; border: 1px solid var(--out-line); border-radius: 30px; background: transparent; color: var(--out-ink); cursor: pointer; font: inherit; font-size: 12px; white-space: nowrap; }
.out-button { display: inline-flex; justify-content: center; align-items: center; gap: 10px; min-height: 48px; padding: 11px 23px; border: 1px solid var(--out-accent); border-radius: 30px; font-size: 14px; font-weight: 600; transition: background .2s cubic-bezier(.4,0,.2,1), transform .2s cubic-bezier(.4,0,.2,1); }
.out-page .out-button-primary, .out-home .out-button-primary { background: #6b5b73; color: var(--out-inverse); border-color: #6b5b73; }
.out-button:hover { background: var(--out-tint); transform: translateY(-2px); }
.out-page .out-button-primary:hover, .out-home .out-button-primary:hover { background: #584a5f; }
.out-kicker { display: block; color: var(--out-muted); font-size: 12px; letter-spacing: .13em; margin-bottom: 20px !important; }
.out-lead { font-size: 17px; line-height: 1.95; color: var(--out-muted); max-width: 560px; }
.out-hero { display: grid; grid-template-columns: 1.12fr 1fr; align-items: center; gap: 68px; padding-top: 88px; padding-bottom: 84px; }
.out-hero h1 { font-size: clamp(34px,4.3vw,56px); font-weight: 600; line-height: 1.4; letter-spacing: -.035em; margin: 0 0 26px; }
.out-hero h1 em { font-style: normal; color: var(--out-accent); }
.out-actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-top: 28px; }
.out-caption { color: var(--out-muted); font-size: 12px; line-height: 1.8; margin-top: 16px !important; }
.out-sheet { padding: 30px; background: var(--out-paper); border: 1px solid var(--out-line); box-shadow: var(--out-shadow); border-radius: 8px; }
.out-sheet-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-bottom: 20px; border-bottom: 1px solid var(--out-line); color: var(--out-muted); font-size: 12px; }
.out-pill { display: inline-block; border: 1px solid var(--out-line); border-radius: 25px; padding: 3px 10px; white-space: nowrap; font-size: 11px; }
.out-sheet h3 { margin: 22px 0 14px; font-size: 25px; line-height: 1.5; }
.out-sheet p { font-size: 14px; }
.out-tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 16px 0 20px; }
.out-tags span { padding: 5px 13px; background: var(--out-tint); border-radius: 5px; font-size: 12px; }
.out-note { background: var(--out-green-bg); color: var(--out-green); padding: 16px 18px; border-left: 2px solid var(--out-green); margin-top: 22px; font-size: 14px; }
.out-small-grid { display: grid; grid-template-columns: 1fr 1fr; margin-top: 24px; gap: 22px; }
.out-small-grid div { border-top: 1px solid var(--out-line); padding-top: 13px; }
.out-small-grid strong { font-size: 14px; display: block; }
.out-small-grid span { font-size: 12px; color: var(--out-muted); }
.out-path { display: grid; grid-template-columns: repeat(3,1fr); gap: 30px; border-top: 1px solid var(--out-line); border-bottom: 1px solid var(--out-line); padding: 28px 0; }
.out-path a { display: flex; align-items: baseline; gap: 14px; font-size: 15px; }
.out-path span { color: var(--out-muted); font-family: Georgia,serif; }
.out-section { padding: 88px 0; scroll-margin-top: 30px; }
.out-section + .out-section { border-top: 1px solid var(--out-line); }
.out-section h2, .out-home h2 { font-size: clamp(27px,3vw,38px); font-weight: 600; line-height: 1.5; margin: 0 0 18px; }
.out-section-intro { max-width: 650px; color: var(--out-muted); font-size: 16px; }
.out-tabs { display: flex; gap: 8px; flex-wrap: wrap; margin: 30px 0; }
.out-tab { border: 1px solid var(--out-line); background: transparent; color: var(--out-muted); padding: 11px 20px; border-radius: 30px; min-height: 48px; font-size: 14px !important; }
.out-tab[aria-selected="true"] { background: #6b5b73; border-color: #6b5b73; color: var(--out-inverse); }
.out-scenario { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; margin-top: 28px; }
.out-scenario h3 { font-size: 27px; margin-bottom: 17px; line-height: 1.5; }
.out-scenario-copy p { margin-bottom: 18px; color: var(--out-muted); }
.out-steps { list-style: none; padding: 0; margin: 26px 0; counter-reset: steps; }
.out-steps li { display: flex; gap: 14px; margin-bottom: 16px; font-size: 14px; }
.out-steps li::before { counter-increment: steps; content: "0" counter(steps); color: var(--out-muted); font-family: Georgia,serif; }
.out-text-link { display: inline-block; border-bottom: 1px solid var(--out-accent); color: var(--out-accent) !important; font-size: 14px; padding: 5px 0; }
.out-mini-table { width: 100%; border-collapse: collapse; font-size: 13px; margin-top: 18px; }
.out-mini-table th, .out-mini-table td { text-align: left; padding: 12px 0; border-bottom: 1px solid var(--out-line); }
.out-mini-table th { color: var(--out-muted); font-weight: 400; }
.out-mini-table td:last-child { color: var(--out-green); }
.out-comparison-shell { background: var(--out-tint); padding: 48px; margin-top: 36px; border-radius: 8px; }
.out-average-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; }
.out-average { text-align: center; padding: 14px 20px 30px; }
.out-average + .out-average { border-left: 1px solid var(--out-line); }
.out-average p { font-size: 14px; color: var(--out-muted); }
.out-average strong { font: 72px/1.4 Georgia,serif; display: block; color: var(--out-ink); }
.out-center { text-align: center; }
.out-comparison { border-top: 1px solid var(--out-line); padding-top: 28px; margin-top: 28px; }
.out-score-table { width: 100%; border-collapse: collapse; font-size: 14px; text-align: center; }
.out-score-table th, .out-score-table td { padding: 12px 6px; border-bottom: 1px solid var(--out-line); }
.out-score-table th { font-weight: 500; }
.out-score-table th:first-child { text-align: left; }
.out-score-table thead { color: var(--out-muted); }
.out-explanation { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; margin-top: 22px; font-size: 14px; }
.out-explanation strong { display: block; margin-bottom: 6px; }
.out-explanation p { color: var(--out-muted); }
.out-result-line { font-size: 20px; line-height: 1.8; margin-top: 28px !important; max-width: 800px; }
.out-benefits { display: grid; grid-template-columns: 1fr 1fr; gap: 0 64px; margin-top: 28px; }
.out-benefit { border-top: 1px solid var(--out-line); padding: 26px 0; }
.out-benefit h3 { font-size: 21px; margin-bottom: 12px; }
.out-benefit p { color: var(--out-muted); font-size: 14px; }
.out-benefit small { display: block; color: var(--out-muted); font-size: 12px; margin-top: 14px; }
.out-start { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 60px; }
.out-start-list { margin: 0; padding: 0; list-style: none; }
.out-start-list li { border-top: 1px solid var(--out-line); padding: 18px 0; display: flex; gap: 20px; }
.out-start-list span { color: var(--out-muted); font-family: Georgia,serif; }
.out-start-list strong { display: block; font-size: 16px; }
.out-start-list p { font-size: 14px; color: var(--out-muted); }
.out-faq { max-width: 840px; }
.out-faq details { border-bottom: 1px solid var(--out-line); padding: 20px 0; }
.out-faq summary { font-size: 16px; cursor: pointer; padding-right: 20px; }
.out-faq details p { color: var(--out-muted); font-size: 14px; padding: 15px 22px 0 0; }
.out-final { background: var(--out-tint); padding: 64px 30px; text-align: center; border-radius: 8px; margin-bottom: 70px; }
.out-final h2 { font-size: clamp(25px,3vw,36px); margin-bottom: 16px; }
.out-final p { color: var(--out-muted); font-size: 15px; }
.out-final .out-actions { justify-content: center; }
.out-footer { border-top: 1px solid var(--out-line); padding: 28px 0; font-size: 12px; color: var(--out-muted); }
.out-footer .out-wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 15px; }
.out-footer a { margin-left: 18px; }
.out-skip { position: absolute; left: 20px; top: -100px; background: var(--out-paper); padding: 12px; z-index: 2000; }
.out-skip:focus { top: 10px; }
/* Homepage integration: retain the current real device image and existing sections. */
.out-home { color: var(--out-ink); padding: 55px 0 85px; }
.out-home-heading { display: flex; align-items: end; justify-content: space-between; gap: 32px; margin-bottom: 30px; }
.out-home-heading p { color: var(--out-muted); max-width: 620px; }
.out-home-grid { display: grid; grid-template-columns: repeat(3,1fr); border-top: 1px solid var(--out-line); }
.out-home-item { padding: 30px 26px; border-bottom: 1px solid var(--out-line); }
.out-home-item:first-child { padding-left: 0; }
.out-home-item:last-child { padding-right: 0; }
.out-home-item + .out-home-item { border-left: 1px solid var(--out-line); }
.out-home-item h3 { font-size: 23px; margin: 18px 0 12px; }
.out-home-item p { font-size: 14px; color: var(--out-muted); }
.out-home-example { background: var(--out-paper); border: 1px solid var(--out-line); border-radius: 6px; padding: 18px; margin: 22px 0; min-height: 128px; }
.out-home-example b { display: block; font-weight: 500; font-size: 14px; margin-top: 10px; }
.out-home-example small { display: block; color: var(--out-muted); font-size: 11px; }
.out-index .hero-title { font-size: clamp(34px,4.3vw,55px); line-height: 1.4; }
.out-index .hero-content { opacity: 1; transform: none; animation: none; }
.out-index .hero-subtitle { font-size: 17px; line-height: 1.9; }
.out-index .nav-links { gap: 19px; }
.out-index .nav-actions { display: flex; gap: 10px; align-items: center; }
.out-index nav > .container { width: 100%; }
.out-index .nav-inner { gap: 18px; }
.out-index .logo { font-size: .95rem; letter-spacing: 1px; }
.out-index .nav-link { white-space: nowrap; }
.out-index .btn-primary { background: #6b5b73; color: #faf6f0; }
.out-index .btn-primary:hover { background: #584a5f; }
.out-index .feature-card, .out-index .testimonial-card, .out-index .price-card, .out-index .toggle-btn.active { background: var(--out-paper); }
.out-index nav { background: var(--out-bg); }
.out-index footer { background: var(--out-paper); }
.out-index .feature-icon { color: var(--out-ink); }
html.dark .out-index .feature-icon[style*="background: var(--tm-primary)"] { background: #6b5b73 !important; color: #faf6f0; }
.out-index .reveal, html.js .out-index .reveal { opacity: 1; transform: none; }
html { scroll-behavior: smooth; }
.out-index section[id] { scroll-margin-top: 100px; }
@media (max-width: 1100px) {
    .out-index .nav-links { gap: 12px; }
    .out-index .nav-actions .btn { padding: 10px 17px; }
    .out-index .nav-link { font-size: 12px; }
    .out-hero { gap: 35px; }
}
@media (max-width: 800px) {
    .out-header-inner { flex-wrap: wrap; gap: 16px; padding: 18px 0; }
    .out-header-links { order: 3; width: 100%; margin: 0; gap: 24px; }
    .out-header-inner > .out-theme { margin-left: auto; }
    .out-header-links .out-button { margin-left: auto; min-height: 40px; padding: 7px 17px; }
    .out-hero, .out-scenario, .out-start { grid-template-columns: 1fr; gap: 36px; }
    .out-hero { padding-top: 52px; padding-bottom: 48px; }
    .out-hero .out-sheet { max-width: 560px; width: 100%; }
    .out-section { padding: 60px 0; }
    .out-path { gap: 16px; }
    .out-path a { font-size: 13px; gap: 8px; }
    .out-comparison-shell { padding: 28px; }
    .out-home-heading { display: block; }
    .out-home-heading .out-text-link { margin-top: 15px; }
    .out-home-grid { grid-template-columns: 1fr; }
    .out-home-item, .out-home-item:first-child, .out-home-item:last-child { padding: 26px 0; }
    .out-home-item + .out-home-item { border-left: 0; }
    .out-home-example { min-height: 0; }
}
@media (max-width: 520px) {
    .out-wrap { width: calc(100% - 40px); }
    .out-hero h1 { font-size: 35px; }
    .out-hero .out-lead { font-size: 15px; }
    .out-sheet { padding: 23px; }
    .out-path { grid-template-columns: 1fr; padding: 22px 0; gap: 14px; }
    .out-path a { font-size: 14px; }
    .out-tabs { gap: 6px; }
    .out-tab { padding: 10px 14px; font-size: 13px !important; }
    .out-benefits, .out-explanation { grid-template-columns: 1fr; gap: 10px; }
    .out-comparison-shell { padding: 22px 15px; }
    .out-average-grid { gap: 14px; }
    .out-average { padding: 10px 8px 24px; }
    .out-average strong { font-size: 60px; }
    .out-score-table { font-size: 12px; }
    .out-score-table th, .out-score-table td { padding: 12px 3px; }
    .out-index .nav-inner { gap: 6px; }
    .out-index .menu-btn { margin-right: 4px; width: 36px; }
    .out-index .nav-actions { gap: 6px; }
    .out-index .nav-actions .btn { padding: 10px 12px; font-size: 12px; }
    .out-index .logo { gap: 6px; font-size: 11px; margin-right: 0; letter-spacing: 0; }
    .out-index .out-theme { padding: 8px; font-size: 11px; }
    .out-index .hero-title { font-size: 33px; }
}
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .out-page *, .out-index * { animation: none !important; transition: none !important; }
}