:root {
    --pink: #D96B9A;
    --pink-dark: #B74F7C;
    --lavender: #B89ACB;
    --charcoal: #2B2530;
    --paper: #FFF9FC;
    --mist: #F5EDF3;
    --text: #322D34;
    --muted: #756D78;
    --accent: #E88A62;
    --line: rgba(50,45,52,.12);
    --shadow: 0 22px 60px rgba(55, 39, 52, .09);
    --radius-lg: 34px;
    --radius-md: 22px;
    --radius-sm: 14px;
    --shell: min(1180px, calc(100% - 40px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    background: var(--paper);
    color: var(--text);
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    line-height: 1.72;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
button, input, textarea, select { font: inherit; }
button { color: inherit; }
.shell { width: var(--shell); margin-inline: auto; }
.narrow { max-width: 860px; margin-inline: auto; }
.skip-link { position: fixed; left: 16px; top: 12px; z-index: 999; transform: translateY(-160%); background: var(--charcoal); color: #fff; padding: 10px 14px; border-radius: 8px; }
.skip-link:focus { transform: translateY(0); }

.site-header { position: sticky; top: 0; z-index: 40; background: rgba(255,249,252,.93); border-bottom: 1px solid rgba(50,45,52,.08); backdrop-filter: blur(18px); }
.header-inner { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; }
.brand img { width: 46px; height: 46px; object-fit: contain; }
.brand span { display: grid; line-height: 1.2; }
.brand strong { font-size: 1.08rem; letter-spacing: .04em; }
.brand small { margin-top: 5px; color: var(--muted); }
.site-nav { display: flex; gap: 6px; align-items: center; }
.site-nav a { text-decoration: none; color: var(--muted); padding: 10px 14px; border-radius: 999px; font-size: .95rem; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--charcoal); background: var(--mist); }
.site-nav a[aria-current="page"] { box-shadow: inset 0 0 0 1px rgba(217,107,154,.18); }
.menu-toggle { display: none; border: 1px solid var(--line); background: #fff; border-radius: 999px; padding: 9px 14px; cursor: pointer; }

.hero { padding: 72px 0 64px; display: grid; grid-template-columns: 1.08fr .92fr; align-items: center; gap: 70px; }
.hero h1, .page-intro h1, .official-hero h1, .download-intro h1 { margin: 10px 0 20px; line-height: 1.13; letter-spacing: -.035em; font-size: clamp(2.35rem, 5vw, 4.85rem); color: var(--charcoal); }
.hero .lede, .page-intro .lede, .official-hero .lede, .download-intro .lede { max-width: 760px; font-size: 1.08rem; color: var(--muted); }
.eyebrow { color: var(--pink-dark); text-transform: uppercase; letter-spacing: .13em; font-weight: 750; font-size: .78rem; margin: 0 0 8px; }
.hero-actions, .center-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; margin-top: 28px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 0 20px; border-radius: 999px; background: var(--charcoal); color: #fff; text-decoration: none; font-weight: 700; box-shadow: 0 10px 24px rgba(43,37,48,.12); }
.button.primary { background: var(--pink); }
.button:hover { transform: translateY(-1px); }
.text-link { color: var(--pink-dark); text-decoration-thickness: 1px; text-underline-offset: 4px; }
.text-link.strong { font-weight: 750; }
.hero-facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 38px 0 0; }
.hero-facts div { padding: 16px; border-top: 1px solid var(--line); }
.hero-facts dt { color: var(--muted); font-size: .8rem; }
.hero-facts dd { margin: 5px 0 0; font-weight: 720; color: var(--charcoal); }
.hero-media { margin: 0; position: relative; }
.hero-media img { border-radius: 40px 40px 40px 12px; min-height: 480px; object-fit: cover; box-shadow: var(--shadow); background: var(--mist); }
.hero-media figcaption { max-width: 82%; margin: 14px 0 0 auto; color: var(--muted); font-size: .9rem; }

.soft-section { background: var(--mist); }
.watch-core { padding: 78px 0; }
.split-heading { display: grid; grid-template-columns: 1.1fr .9fr; gap: 70px; align-items: end; margin-bottom: 36px; }
.split-heading h2, .device-copy h2, .topic-card h2, .quiet-note h2, .route-endcap h2, .two-column-note h2, .faq-section h2, .visual-note h2, .download-checklist h2 { margin: 6px 0 0; font-size: clamp(1.7rem, 3vw, 2.75rem); line-height: 1.2; letter-spacing: -.025em; color: var(--charcoal); }
.split-heading > p { color: var(--muted); margin: 0; }
.editorial-list { border-top: 1px solid rgba(50,45,52,.11); }
.editorial-item { display: grid; grid-template-columns: 82px 1fr; gap: 22px; padding: 32px 0; border-bottom: 1px solid rgba(50,45,52,.11); }
.index-number { font-size: 1.7rem; color: rgba(217,107,154,.68); font-weight: 800; font-variant-numeric: tabular-nums; }
.editorial-item h3 { margin: 0 0 8px; font-size: 1.34rem; }
.editorial-item p { max-width: 880px; margin: 8px 0 0; color: var(--muted); }
.editorial-item .summary { color: var(--text); font-weight: 620; }
.inline-cta { margin-top: 34px; display: flex; justify-content: space-between; align-items: center; gap: 24px; padding: 24px 28px; background: rgba(255,255,255,.65); border-radius: var(--radius-md); border: 1px solid rgba(255,255,255,.84); }
.inline-cta p { margin: 0; }

.device-band { display: grid; grid-template-columns: .95fr 1.05fr; gap: 72px; padding: 88px 0; align-items: center; }
.device-media img { border-radius: 14px 38px 14px 38px; box-shadow: var(--shadow); background: var(--mist); }
.device-copy p { color: var(--muted); }
.check-list { list-style: none; padding: 0; margin: 24px 0; display: grid; gap: 12px; }
.check-list li { position: relative; padding-left: 30px; }
.check-list li::before { content: ""; position: absolute; left: 0; top: .66em; width: 10px; height: 10px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 5px rgba(232,138,98,.12); }

.access-flow { padding: 76px 0; }
.access-flow h2 { max-width: 760px; font-size: clamp(1.7rem, 3vw, 2.7rem); line-height: 1.2; margin: 6px 0 28px; }
.route-stack { display: grid; gap: 12px; }
.route-stack.small { margin-top: 28px; }
.route-link { display: grid; grid-template-columns: 1.05fr 1.8fr auto; gap: 24px; align-items: center; padding: 22px 24px; border-radius: var(--radius-md); background: rgba(255,255,255,.72); border: 1px solid rgba(50,45,52,.09); text-decoration: none; }
.route-link strong { font-size: 1.08rem; }
.route-link span { color: var(--muted); }
.route-link span:last-child { color: var(--pink-dark); font-size: 1.25rem; }
.route-link:hover { background: #fff; border-color: rgba(217,107,154,.28); }

.topic-grid { padding: 82px 0; display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.topic-card { min-height: 290px; padding: 30px; border: 1px solid var(--line); border-radius: var(--radius-md); background: rgba(255,255,255,.55); }
.topic-card:nth-child(2), .topic-card:nth-child(3) { transform: translateY(26px); }
.topic-card p:last-child { color: var(--muted); }
.quiet-note { margin-bottom: 88px; padding: 30px 0; display: grid; grid-template-columns: .85fr 1.15fr; gap: 60px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.quiet-note > p { color: var(--muted); margin: 0; align-self: center; }

.page-main { padding-bottom: 72px; }
.breadcrumbs { padding-top: 24px; }
.breadcrumbs ol { list-style: none; display: flex; gap: 10px; padding: 0; margin: 0; color: var(--muted); font-size: .9rem; }
.breadcrumbs li + li::before { content: "/"; margin-right: 10px; color: rgba(117,109,120,.45); }
.breadcrumbs a { color: var(--muted); }
.page-intro, .download-intro { display: grid; grid-template-columns: 1.2fr .8fr; gap: 54px; align-items: center; padding: 50px 0 58px; }
.page-intro.compact-intro { grid-template-columns: 1.25fr .75fr; }
.page-intro h1, .official-hero h1, .download-intro h1 { font-size: clamp(2.2rem, 4.3vw, 4.1rem); }
.intro-image, .download-intro img { border-radius: 32px 12px 32px 12px; background: var(--mist); box-shadow: var(--shadow); }
.reading-layout { display: grid; grid-template-columns: minmax(0, 1fr) 330px; gap: 56px; align-items: start; }
.longform { font-size: 1.02rem; }
.longform h2 { margin: 52px 0 14px; font-size: 1.85rem; line-height: 1.25; color: var(--charcoal); }
.longform h2:first-child { margin-top: 0; }
.longform p { color: #4e4751; }
.callout { margin: 30px 0; padding: 24px 26px; border-left: 4px solid var(--pink); background: var(--mist); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }
.callout p { margin-bottom: 0; }
.comparison-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin: 22px 0; }
.comparison-grid div { padding: 22px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-sm); }
.comparison-grid h3 { margin: 0 0 8px; font-size: 1rem; }
.comparison-grid p { font-size: .94rem; margin: 0; }
.step-list { padding-left: 1.4rem; }
.step-list li { margin: 12px 0; padding-left: 6px; }
.side-panel { position: sticky; top: 112px; padding: 24px; background: var(--mist); border-radius: var(--radius-md); }
.side-panel h2 { font-size: 1rem; margin: 0 0 14px; }
.side-panel > a { display: grid; gap: 3px; text-decoration: none; padding: 15px 0; border-bottom: 1px solid rgba(50,45,52,.1); }
.side-panel > a span { color: var(--muted); font-size: .9rem; }
.side-panel img { margin-top: 20px; border-radius: var(--radius-sm); }
.faq-section { margin-top: 80px; padding: 72px 0; }
details { border-bottom: 1px solid rgba(50,45,52,.12); padding: 18px 0; }
summary { cursor: pointer; font-weight: 720; color: var(--charcoal); }
details p { color: var(--muted); margin: 12px 0 4px; }

.guide-timeline { padding: 10px 0 70px; }
.guide-timeline article { display: grid; grid-template-columns: 56px 1fr; gap: 24px; padding: 28px 0; border-top: 1px solid var(--line); }
.guide-timeline article > span { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 50%; background: var(--mist); color: var(--pink-dark); font-weight: 800; }
.guide-timeline h2 { margin: 0 0 8px; font-size: 1.32rem; }
.guide-timeline p { color: var(--muted); margin: 0; }
.two-column-note { padding: 70px 0; display: grid; grid-template-columns: 1fr 1fr; gap: 68px; }
.two-column-note p { color: var(--muted); }
.mini-checks { display: grid; gap: 10px; }
.mini-checks p { margin: 0; padding: 15px 18px; background: rgba(255,255,255,.7); border-radius: var(--radius-sm); }
.route-endcap { padding: 78px 0 18px; }
.route-endcap > p { max-width: 780px; color: var(--muted); }

.official-hero { display: grid; grid-template-columns: 1.25fr .75fr; gap: 60px; align-items: center; padding: 54px 0 66px; }
.domain-card { background: var(--charcoal); color: #fff; border-radius: 30px; padding: 30px; box-shadow: var(--shadow); }
.domain-card span { display: block; color: rgba(255,255,255,.65); font-size: .88rem; }
.domain-card strong { display: block; margin: 10px 0 14px; font-size: clamp(1.5rem, 3vw, 2.3rem); word-break: break-word; }
.domain-card p { color: rgba(255,255,255,.72); margin: 0; }
.official-notes { display: grid; grid-template-columns: 1.15fr .85fr; gap: 18px; padding-bottom: 74px; }
.official-notes article { padding: 28px; border: 1px solid var(--line); border-radius: var(--radius-md); }
.official-notes article:first-child { grid-row: span 2; display: flex; flex-direction: column; justify-content: center; background: linear-gradient(155deg, rgba(217,107,154,.07), rgba(184,154,203,.16)); }
.official-notes h2 { margin: 0 0 10px; font-size: 1.32rem; }
.official-notes p { color: var(--muted); margin: 0; }
.visual-note { padding: 72px 0; display: grid; grid-template-columns: .9fr 1.1fr; gap: 60px; align-items: center; }
.visual-note img { border-radius: 32px; box-shadow: var(--shadow); }
.visual-note p { color: var(--muted); }
.inline-links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
.inline-links a { padding: 9px 13px; border-radius: 999px; background: #fff; color: var(--pink-dark); text-decoration: none; }

.download-intro { padding-top: 52px; }
.download-notes { display: grid; gap: 0; padding-bottom: 70px; }
.download-notes article { display: grid; grid-template-columns: .85fr 1.15fr; gap: 50px; padding: 30px 0; border-top: 1px solid var(--line); }
.download-notes h2 { margin: 0; font-size: 1.35rem; }
.download-notes p { margin: 0; color: var(--muted); }
.download-checklist { padding: 72px 0; }
.check-list.boxed { margin-top: 28px; }
.check-list.boxed li { background: rgba(255,255,255,.72); padding: 15px 18px 15px 48px; border-radius: var(--radius-sm); }
.check-list.boxed li::before { left: 20px; top: 1.25em; }
.center-actions { justify-content: center; }
.not-found { min-height: 62vh; display: grid; place-items: center; align-content: center; text-align: center; max-width: 760px; }
.error-code { margin: 0; font-size: clamp(5rem, 16vw, 10rem); line-height: .9; font-weight: 900; color: rgba(217,107,154,.17); }
.not-found h1 { margin: -12px 0 10px; font-size: 2.3rem; }
.not-found > p:not(.error-code) { color: var(--muted); }

.site-footer { margin-top: 0; background: var(--charcoal); color: #fff; }
.footer-grid { min-height: 230px; display: grid; grid-template-columns: 1.25fr .75fr .65fr; gap: 50px; align-items: center; }
.footer-brand { font-size: 1.3rem; }
.footer-grid p { color: rgba(255,255,255,.62); max-width: 500px; }
.footer-links { display: grid; gap: 8px; }
.footer-links a { color: rgba(255,255,255,.78); text-decoration: none; }
.footer-links a:hover { color: #fff; }
.footer-note { display: grid; gap: 7px; color: rgba(255,255,255,.55); }
.footer-note strong { color: #fff; font-size: .96rem; }

:focus-visible { outline: 3px solid rgba(232,138,98,.75); outline-offset: 3px; }
@media (max-width: 940px) {
    :root { --shell: min(100% - 30px, 760px); }
    .menu-toggle { display: inline-flex; }
    .site-nav { position: absolute; left: 15px; right: 15px; top: 70px; display: none; flex-direction: column; align-items: stretch; padding: 12px; background: #fff; border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow); }
    .site-nav[data-open="true"] { display: flex; }
    .site-nav a { border-radius: 12px; }
    .hero, .page-intro, .page-intro.compact-intro, .official-hero, .download-intro, .device-band, .visual-note { grid-template-columns: 1fr; gap: 36px; }
    .hero { padding-top: 46px; }
    .hero-media img { min-height: 0; }
    .split-heading, .two-column-note { grid-template-columns: 1fr; gap: 20px; }
    .reading-layout { grid-template-columns: 1fr; }
    .side-panel { position: static; }
    .comparison-grid { grid-template-columns: 1fr; }
    .official-notes { grid-template-columns: 1fr; }
    .official-notes article:first-child { grid-row: auto; }
    .footer-grid { grid-template-columns: 1fr 1fr; padding: 48px 0; }
    .footer-note { grid-column: 1 / -1; }
}
@media (max-width: 650px) {
    :root { --shell: calc(100% - 24px); --radius-lg: 24px; --radius-md: 18px; }
    .header-inner { min-height: 68px; }
    .brand img { width: 40px; height: 40px; }
    .brand small { display: none; }
    .hero h1, .page-intro h1, .official-hero h1, .download-intro h1 { font-size: clamp(2rem, 11vw, 3rem); }
    .hero { gap: 34px; padding-bottom: 50px; }
    .hero-facts { grid-template-columns: 1fr; }
    .hero-facts div { padding: 12px 0; }
    .hero-media figcaption { max-width: none; }
    .watch-core, .access-flow, .faq-section, .download-checklist { padding: 56px 0; }
    .split-heading { margin-bottom: 22px; }
    .editorial-item { grid-template-columns: 42px 1fr; gap: 12px; padding: 24px 0; }
    .index-number { font-size: 1.25rem; }
    .inline-cta { align-items: stretch; flex-direction: column; }
    .device-band, .topic-grid, .page-intro, .official-hero, .download-intro { padding-top: 54px; padding-bottom: 54px; }
    .topic-grid { grid-template-columns: 1fr; }
    .topic-card:nth-child(2), .topic-card:nth-child(3) { transform: none; }
    .quiet-note { grid-template-columns: 1fr; gap: 14px; margin-bottom: 60px; }
    .route-link { grid-template-columns: 1fr auto; gap: 8px 14px; }
    .route-link span:nth-child(2) { grid-column: 1 / -1; grid-row: 2; }
    .reading-layout { gap: 34px; }
    .longform h2 { margin-top: 40px; }
    .guide-timeline article { grid-template-columns: 42px 1fr; gap: 14px; }
    .download-notes article { grid-template-columns: 1fr; gap: 10px; }
    .footer-grid { grid-template-columns: 1fr; gap: 28px; }
    .footer-note { grid-column: auto; }
}
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}

/* Help page: dense reading layout kept intentionally different from the core viewing page. */
.help-intro { padding-top: 54px; }
.help-intro h1 { max-width: 980px; margin: 8px 0 18px; font-size: clamp(2.2rem, 4.4vw, 4rem); line-height: 1.14; letter-spacing: -.035em; }
.help-intro > p { max-width: 880px; color: var(--muted); }
.help-jump { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
.help-jump a { padding: 10px 14px; border-radius: 999px; background: var(--mist); color: var(--pink-dark); text-decoration: none; font-weight: 700; }
.help-groups { padding: 18px 0 86px; }
.help-entry { scroll-margin-top: 110px; display: grid; grid-template-columns: 68px 1fr; gap: 24px; padding: 34px 0; border-top: 1px solid var(--line); }
.help-number { color: rgba(217,107,154,.62); font-weight: 850; font-size: 1.4rem; font-variant-numeric: tabular-nums; }
.help-entry h2 { margin: 0 0 18px; font-size: clamp(1.25rem, 2.3vw, 1.7rem); line-height: 1.28; color: var(--charcoal); }
.help-entry dl { margin: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.help-entry dl div { padding: 18px; border-radius: 16px; background: rgba(245,237,243,.54); }
.help-entry dt { margin-bottom: 7px; font-size: .78rem; letter-spacing: .08em; color: var(--pink-dark); font-weight: 800; }
.help-entry dd { margin: 0; color: #554e58; }
@media (max-width: 760px) {
    .help-entry { grid-template-columns: 40px 1fr; gap: 10px; padding: 28px 0; }
    .help-number { font-size: 1rem; }
    .help-entry dl { grid-template-columns: 1fr; }
}