:root {
  --bg: #edf7f3;
  --paper: #ffffff;
  --mist: #e2f1ec;
  --navy: #061d2c;
  --navy-2: #0a2b3d;
  --ink: #0b2230;
  --muted: #5d7479;
  --dim: #8ba0a2;
  --aqua: #49d8c2;
  --aqua-dark: #177f73;
  --coral: #f2644c;
  --coral-2: #d94e37;
  --line: #d5e5df;
  --mono: ui-monospace, "SFMono-Regular", "Cascadia Mono", Consolas, monospace;
  --sans: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--sans); font-size: 18px; line-height: 1.7; -webkit-font-smoothing: antialiased; overflow-x: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; border: 0; background: none; cursor: pointer; }
::selection { background: var(--aqua); color: var(--navy); }
:focus-visible { outline: 3px solid var(--coral); outline-offset: 3px; }

.container { width: min(1180px, calc(100% - 40px)); margin-inline: auto; }
.section { padding: 62px 0; background: var(--paper); }
.section-mist { background: var(--mist); }
.section-navy { background: var(--navy); color: #fff; }

/* age */
.age-bar { height: 32px; display: flex; align-items: center; justify-content: center; background: #03131e; color: rgba(255,255,255,.6); font-size: 11px; letter-spacing: .04em; }

/* header */
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(6,29,44,.96); border-bottom: 1px solid rgba(255,255,255,.09); -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px); }
.header-inner { display: flex; align-items: center; gap: 20px; height: 66px; }
.brand { display: inline-flex; align-items: center; gap: 8px; flex: 0 0 auto; }
.brand img { width: 36px; height: 36px; object-fit: contain; border-radius: 8px; }
.brand b { color: #fff; font-size: 20px; letter-spacing: -.03em; }
.nav { display: flex; gap: 18px; margin-left: auto; }
.nav a { color: rgba(255,255,255,.62); font-size: 14px; }
.nav a:hover { color: var(--aqua); }
.header-cta { padding: 9px 18px; border-radius: 999px; background: var(--coral); color: #fff; font-size: 13px; font-weight: 800; white-space: nowrap; }
.header-cta:hover { background: var(--coral-2); }
.menu-btn { display: none; width: 40px; height: 40px; align-items: center; justify-content: center; border: 1px solid rgba(255,255,255,.2); border-radius: 9px; }
.menu-btn i { position: relative; display: block; width: 17px; height: 1.5px; background: #fff; }
.menu-btn i::before, .menu-btn i::after { content: ""; position: absolute; left: 0; width: 17px; height: 1.5px; background: #fff; transition: transform .2s ease; }
.menu-btn i::before { top: -6px; }
.menu-btn i::after { top: 6px; }
.menu-btn[aria-expanded="true"] i { background: transparent; }
.menu-btn[aria-expanded="true"] i::before { transform: translateY(6px) rotate(45deg); }
.menu-btn[aria-expanded="true"] i::after { transform: translateY(-6px) rotate(-45deg); }
.mobile-nav { display: none; padding: 8px 20px 18px; background: var(--navy-2); border-top: 1px solid rgba(255,255,255,.1); }
.mobile-nav.is-open { display: block; }
.mobile-nav a { display: block; padding: 11px 2px; border-bottom: 1px solid rgba(255,255,255,.1); color: rgba(255,255,255,.66); font-size: 14px; }
.mobile-nav .header-cta { margin-top: 12px; color: #fff; }

/* hero */
.hero { position: relative; overflow: hidden; padding: 58px 0 52px; background: radial-gradient(circle at 82% 2%, rgba(73,216,194,.16), transparent 34%), radial-gradient(circle at 8% 100%, rgba(242,100,76,.1), transparent 42%), var(--navy); color: #fff; }
.hero-waves { position: absolute; inset: 0; opacity: .3; background-image: repeating-radial-gradient(ellipse at 84% 100%, transparent 0 34px, rgba(73,216,194,.2) 35px 36px, transparent 37px 72px); -webkit-mask-image: linear-gradient(90deg, transparent 40%, #000 100%); mask-image: linear-gradient(90deg, transparent 40%, #000 100%); }
.hero-grid { position: relative; z-index: 2; display: grid; grid-template-columns: 1.08fr .92fr; gap: 34px; align-items: center; }
.eyebrow { display: inline-flex; margin: 0 0 12px; padding: 4px 9px; border: 1px solid rgba(73,216,194,.4); border-radius: 2px; color: var(--aqua); font-family: var(--mono); font-size: 10px; letter-spacing: .06em; }
.hero h1 { margin: 0 0 8px; font-size: clamp(44px, 5.1vw, 68px); line-height: 1.06; letter-spacing: -.055em; font-weight: 900; }
.hero h1 em { display: block; margin-top: 4px; color: var(--aqua); font-size: .62em; line-height: 1.25; font-style: normal; letter-spacing: -.04em; }
.hero-claim { margin: 0 0 9px; color: rgba(255,255,255,.8); font-size: 18px; font-weight: 600; }
.hero-desc { max-width: 550px; margin: 0 0 19px; color: rgba(255,255,255,.55); font-size: 14px; line-height: 1.85; }
.actions { display: flex; flex-wrap: wrap; gap: 9px; }
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 12px 21px; border: 1.5px solid transparent; border-radius: 999px; font-size: 14px; font-weight: 800; transition: transform .18s ease, background .18s ease, border-color .18s ease; }
.btn:hover { transform: translateY(-2px); }
.btn-coral { background: var(--coral); border-color: var(--coral); color: #fff; }
.btn-coral:hover { background: var(--coral-2); }
.btn-ghost { border-color: rgba(255,255,255,.25); color: #fff; background: transparent; }
.btn-ghost:hover { border-color: var(--aqua); color: var(--aqua); }
.btn-line { border-color: #bfd4cf; color: var(--ink); }
.btn-line:hover { border-color: var(--coral); color: var(--coral); }
.hero-pills { display: flex; flex-wrap: wrap; gap: 6px; margin: 16px 0 0; padding: 0; list-style: none; }
.hero-pills li { padding: 3px 8px; border: 1px solid rgba(255,255,255,.16); border-radius: 999px; color: rgba(255,255,255,.58); font-size: 10px; }
.hero-stats { display: grid; grid-template-columns: repeat(4,1fr); gap: 0; margin: 24px 0 0; border-top: 1px solid rgba(255,255,255,.14); border-bottom: 1px solid rgba(255,255,255,.14); }
.hero-stats div { padding: 12px 10px; border-left: 1px solid rgba(255,255,255,.14); }
.hero-stats div:first-child { border-left: 0; padding-left: 0; }
.hero-stats b { display: block; color: #fff; font-size: 23px; line-height: 1.1; }
.hero-stats b em { color: var(--aqua); font-size: 12px; font-style: normal; }
.hero-stats span { display: block; margin-top: 2px; color: rgba(255,255,255,.43); font-size: 9px; }

.hero-stage { position: relative; height: 470px; }
.h-card { position: absolute; overflow: hidden; border: 4px solid rgba(255,255,255,.9); border-radius: 12px; box-shadow: 0 24px 50px -20px rgba(0,0,0,.65); background: var(--navy-2); }
.h-card img { width: 100%; height: 100%; object-fit: cover; }
.h-card > span { position: absolute; left: 8px; top: 8px; padding: 3px 7px; border-radius: 2px; background: var(--aqua); color: var(--navy); font-family: var(--mono); font-size: 8px; font-weight: 800; }
.h1 { width: 175px; height: 315px; left: 1%; top: 90px; transform: rotate(-8deg); z-index: 1; }
.h2 { width: 215px; height: 382px; left: 31%; top: 26px; transform: rotate(1deg); z-index: 3; }
.h3 { width: 175px; height: 315px; right: 1%; top: 100px; transform: rotate(7deg); z-index: 2; }
.h-note { position: absolute; left: 27%; bottom: 0; padding: 5px 8px; border: 1px solid rgba(255,255,255,.18); color: rgba(255,255,255,.5); font-family: var(--mono); font-size: 8px; }

/* heads */
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 22px; margin-bottom: 24px; padding-top: 16px; border-top: 1px solid var(--line); }
.section-navy .section-head { border-color: rgba(255,255,255,.14); }
.kicker { display: inline-flex; margin: 0 0 8px; padding: 3px 8px; border-radius: 2px; background: var(--aqua-dark); color: #fff; font-family: var(--mono); font-size: 9px; letter-spacing: .05em; }
.section-navy .kicker { background: var(--aqua); color: var(--navy); }
.section-head h2 { margin: 0 0 5px; font-size: clamp(30px, 3.4vw, 44px); line-height: 1.13; letter-spacing: -.05em; font-weight: 900; }
.section-head h2 em { color: var(--coral); font-style: normal; }
.section-head p:not(.kicker) { max-width: 700px; margin: 0; color: var(--muted); font-size: 14px; line-height: 1.75; }
.section-navy .section-head p:not(.kicker) { color: rgba(255,255,255,.53); }
.head-note { flex: 0 0 auto; color: var(--aqua); font-family: var(--mono); font-size: 10px; }
.text-link { flex: 0 0 auto; color: var(--coral); font-family: var(--mono); font-size: 11px; font-weight: 700; }

/* fresh */
.rail-actions { display: flex; gap: 6px; flex: 0 0 auto; }
.rail-btn { width: 36px; height: 36px; border: 1px solid var(--line); border-radius: 50%; font-size: 15px; background: var(--paper); }
.rail-btn:hover { background: var(--aqua-dark); border-color: var(--aqua-dark); color: #fff; }
.time-rail { display: flex; gap: 12px; overflow-x: auto; scroll-snap-type: x mandatory; padding: 2px 1px 12px; scrollbar-width: thin; scrollbar-color: var(--aqua) transparent; }
.time-card { flex: 0 0 180px; scroll-snap-align: start; padding: 10px; border: 1px solid var(--line); border-radius: 6px; background: var(--bg); }
.time-card .time { display: inline-block; margin-bottom: 8px; padding: 2px 6px; background: var(--navy); color: var(--aqua); font-family: var(--mono); font-size: 9px; }
.time-card .cover { overflow: hidden; height: 220px; border-radius: 4px; background: var(--mist); }
.time-card .cover img { width: 100%; height: 100%; object-fit: cover; }
.time-card p { margin: 8px 0 2px; color: var(--coral); font-size: 10px; }
.time-card h3 { margin: 0 0 2px; font-size: 15px; }
.time-card small { color: var(--dim); font-size: 10px; }

/* hot */
.hot-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 26px; border-top: 1px solid rgba(255,255,255,.2); }
.hot-item { display: grid; grid-template-columns: 34px 64px minmax(0,1fr) auto; gap: 12px; align-items: center; padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,.13); }
.hot-item > b { color: var(--aqua); font-family: var(--mono); font-size: 13px; }
.hot-item > img { width: 64px; height: 84px; object-fit: cover; border-radius: 3px; }
.hot-item h3 { margin: 0 0 2px; color: #fff; font-size: 15px; }
.hot-item p { margin: 0; color: rgba(255,255,255,.4); font-size: 10px; }
.hot-item > em { color: var(--aqua); font-family: var(--mono); font-size: 10px; font-style: normal; }

/* lines */
.line-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 13px; }
.line-card { padding: 21px; border: 1px solid var(--line); border-top: 3px solid var(--aqua-dark); border-radius: 4px; background: var(--paper); }
.line-card > span { color: var(--coral); font-family: var(--mono); font-size: 10px; }
.line-card h3 { margin: 4px 0 2px; font-size: 26px; letter-spacing: -.04em; }
.line-sub { margin: 0 0 10px; color: var(--aqua-dark); font-size: 13px; font-weight: 700; }
.line-card > p:not(.line-sub) { margin: 0 0 11px; color: var(--muted); font-size: 12px; line-height: 1.8; }
.line-card ul { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.line-card li { padding: 6px 0 6px 14px; border-bottom: 1px solid var(--line); position: relative; color: var(--muted); font-size: 11px; }
.line-card li::before { content: "›"; position: absolute; left: 0; color: var(--coral); }

.special-head { display: flex; align-items: center; gap: 10px; margin: 20px 0 9px; padding-top: 13px; border-top: 1px solid var(--line); }
.special-head span { color: var(--coral); font-family: var(--mono); font-size: 9px; }
.special-head b { font-size: 14px; }
.special-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 13px; margin-top: 16px; }
.special-card { position: relative; overflow: hidden; min-height: 250px; border-radius: 6px; background: var(--navy); }
.special-card::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 40%, rgba(6,29,44,.92)); }
.special-card img { width: 100%; height: 250px; object-fit: cover; opacity: .7; }
.special-card div { position: absolute; left: 0; right: 0; bottom: 0; z-index: 2; padding: 28px 14px 13px; }
.special-card span { color: var(--aqua); font-family: var(--mono); font-size: 8px; }
.special-card h3 { margin: 2px 0; color: #fff; font-size: 21px; }
.special-card p { margin: 0; color: rgba(255,255,255,.65); font-size: 10px; line-height: 1.6; }

/* community */
.community-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 18px; }
.topic-main { position: relative; overflow: hidden; height: 440px; border-radius: 7px; background: var(--navy); }
.topic-main > img { width: 100%; height: 100%; object-fit: cover; opacity: .72; }
.topic-overlay { position: absolute; left: 18px; right: 18px; bottom: 16px; padding: 14px; background: linear-gradient(90deg, rgba(6,29,44,.9), rgba(6,29,44,.7)); border-left: 3px solid var(--aqua); }
.topic-overlay span { color: var(--aqua); font-family: var(--mono); font-size: 8px; }
.topic-overlay h3 { margin: 3px 0; color: #fff; font-size: 22px; line-height: 1.3; }
.topic-overlay p { margin: 0; color: rgba(255,255,255,.5); font-size: 10px; }
.topic-list { display: flex; flex-direction: column; min-height: 440px; border-top: 2px solid var(--ink); }
.topic-list a { display: grid; grid-template-columns: 92px minmax(0,1fr) auto; gap: 10px; align-items: center; padding: 14px 0; border-bottom: 1px solid var(--line); }
.topic-list b { color: var(--coral); font-size: 11px; }
.topic-list span { color: var(--muted); font-size: 10px; }
.topic-list em { color: var(--dim); font-family: var(--mono); font-size: 8px; font-style: normal; }

/* library */
.library-grid { display: grid; grid-template-columns: repeat(6,1fr); gap: 11px; }
.lib-cover { position: relative; overflow: hidden; height: 230px; border-radius: 4px; background: var(--mist); }
.lib-cover img { width: 100%; height: 100%; object-fit: cover; }
.lib-cover span { position: absolute; left: 6px; top: 6px; padding: 2px 5px; background: var(--aqua); color: var(--navy); font-size: 8px; font-weight: 700; }
.lib-card h3 { margin: 7px 0 1px; font-size: 14px; }
.lib-card p { margin: 0; color: var(--dim); font-size: 9px; }

/* factory */
.factory { background: radial-gradient(circle at 90% 20%, rgba(73,216,194,.12), transparent 35%), var(--navy); }
.factory-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 34px; align-items: start; }
.factory-copy h3 { margin: 0 0 8px; color: #fff; font-size: 30px; line-height: 1.2; letter-spacing: -.04em; }
.factory-copy h3 em { color: var(--aqua); font-style: normal; }
.factory-copy p { margin: 0 0 16px; color: rgba(255,255,255,.52); font-size: 12px; line-height: 1.85; }
.factory-steps { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.factory-steps div { padding: 15px; border: 1px solid rgba(255,255,255,.15); border-radius: 4px; }
.factory-steps b { color: var(--aqua); font-family: var(--mono); font-size: 9px; }
.factory-steps h4 { margin: 3px 0; color: #fff; font-size: 15px; }
.factory-steps p { margin: 0; color: rgba(255,255,255,.45); font-size: 10px; line-height: 1.6; }

/* download */
.down-grid { display: grid; grid-template-columns: .62fr 1.38fr; gap: 32px; align-items: start; margin-bottom: 30px; }
.down-phone { justify-self: center; text-align: center; }
.phone-frame { position: relative; width: 215px; padding: 6px; border: 3px solid var(--ink); border-radius: 24px; background: #fff; box-shadow: 11px 11px 0 var(--aqua); }
.phone-frame > img { width: 100%; height: 360px; object-fit: cover; border-radius: 17px; }
.phone-ui { position: absolute; z-index: 2; left: 15px; right: 15px; bottom: 18px; padding: 9px; border-radius: 5px; background: rgba(6,29,44,.88); color: #fff; text-align: left; }
.phone-ui span { color: var(--aqua); font-family: var(--mono); font-size: 7px; }
.phone-ui b { display: block; margin: 1px 0; font-size: 13px; }
.phone-ui small { color: rgba(255,255,255,.55); font-size: 8px; }
.phone-ui i { display: block; height: 2px; margin-top: 7px; background: rgba(255,255,255,.25); position: relative; }
.phone-ui i::before { content: ""; position: absolute; inset: 0 auto 0 0; width: 42%; background: var(--coral); }
.down-phone > small { display: inline-block; margin-top: 10px; color: var(--dim); font-family: var(--mono); font-size: 8px; }
.down-copy h3 { margin: 0 0 8px; font-size: 30px; letter-spacing: -.04em; }
.down-copy h3 em { color: var(--coral); font-style: normal; }
.down-copy > p:not(.kicker) { max-width: 580px; margin: 0 0 14px; color: var(--muted); font-size: 12px; line-height: 1.8; }
.version-list { margin-bottom: 15px; border-top: 1px solid var(--line); }
.version-list div { display: flex; justify-content: space-between; gap: 14px; padding: 7px 0; border-bottom: 1px solid var(--line); font-size: 11px; }
.version-list span { color: var(--muted); font-family: var(--mono); font-size: 9px; }
.qr-inline { display: flex; align-items: center; gap: 12px; margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--line); }
.qr-inline img { width: 88px; height: 88px; border: 1px solid var(--line); }
.qr-inline b { display: block; font-size: 12px; }
.qr-inline span { display: block; color: var(--muted); font-size: 9px; line-height: 1.6; }
.steps { display: grid; grid-template-columns: repeat(4,1fr); gap: 10px; padding-top: 17px; border-top: 2px solid var(--ink); }
.steps div { padding-right: 12px; border-right: 1px solid var(--line); }
.steps div:last-child { border-right: 0; }
.steps b { color: var(--coral); font-family: var(--mono); font-size: 9px; }
.steps h4 { margin: 3px 0 2px; font-size: 13px; }
.steps p { margin: 0; color: var(--muted); font-size: 10px; }

/* reviews */
.review-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 10px; }
.review { padding: 16px; border: 1px solid var(--line); border-radius: 5px; background: var(--paper); }
.review > div { color: var(--coral); font-size: 12px; letter-spacing: 2px; }
.review p { margin: 7px 0 9px; color: var(--muted); font-size: 10.5px; line-height: 1.75; }
.review span { color: var(--aqua-dark); font-family: var(--mono); font-size: 8px; }

/* faq */
.faq-list { border-top: 2px solid var(--ink); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 15px 2px; cursor: pointer; list-style: none; font-size: 13.5px; font-weight: 600; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary span { color: var(--coral); font-family: var(--mono); font-size: 15px; }
.faq details p { margin: 0; padding: 0 24px 15px 2px; color: var(--muted); font-size: 11px; line-height: 1.85; }

/* footer */
.footer { padding: 36px 0 18px; background: var(--navy); color: rgba(255,255,255,.48); }
.footer-top { display: grid; grid-template-columns: 1.35fr .75fr .75fr .8fr; gap: 26px; padding-bottom: 26px; border-bottom: 1px solid rgba(255,255,255,.12); }
.footer-brand a { display: inline-flex; align-items: center; gap: 8px; }
.footer-brand img { width: 34px; height: 34px; object-fit: contain; }
.footer-brand b { color: #fff; font-size: 17px; }
.footer-brand p { max-width: 300px; margin: 9px 0 4px; color: rgba(255,255,255,.35); font-size: 10px; line-height: 1.75; }
.footer-brand small { color: rgba(255,255,255,.28); font-size: 8.5px; }
.footer-col b { display: block; margin-bottom: 8px; color: #fff; font-size: 10px; }
.footer-col a { display: block; padding: 2px 0; color: rgba(255,255,255,.4); font-size: 9.5px; }
.footer-col a:hover { color: var(--aqua); }
.footer-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; padding-top: 13px; color: rgba(255,255,255,.25); font-family: var(--mono); font-size: 8px; }

.mobile-download { display: none; }

/* PC typography */
@media (min-width: 1024px) {
  .nav a { font-size: 14px; }
  .section-head p:not(.kicker) { font-size: 14px; }
  .time-card { flex-basis: 195px; }
  .time-card .cover { height: 242px; }
  .time-card h3 { font-size: 16px; }
  .time-card p { font-size: 10.5px; }
  .time-card small { font-size: 10.5px; }
  .hot-item { padding: 14px 0; }
  .hot-item > b { font-size: 14px; }
  .hot-item > img { width: 68px; height: 90px; }
  .hot-item h3 { font-size: 16px; }
  .hot-item p { font-size: 11px; }
  .line-card > p:not(.line-sub) { font-size: 12.5px; }
  .line-card li { font-size: 11.5px; }
  .special-card h3 { font-size: 23px; }
  .topic-overlay h3 { font-size: 24px; }
  .lib-card h3 { font-size: 15px; }
  .lib-card p { font-size: 9.5px; }
  .factory-copy p { font-size: 12.5px; }
  .factory-steps p { font-size: 10.5px; }
  .review p { font-size: 11.5px; }
  .faq summary { font-size: 14.5px; }
  .faq details p { font-size: 11.5px; }
}

/* responsive */
@media (max-width: 1023px) {
  .hero-grid { grid-template-columns: 1fr; gap: 20px; }
  .hero-stage { height: 430px; max-width: 560px; width: 100%; margin-inline: auto; }
  .line-grid, .special-grid { grid-template-columns: 1fr; }
  .library-grid { grid-template-columns: repeat(3,1fr); }
  .factory-grid { grid-template-columns: 1fr; }
  .community-grid { grid-template-columns: 1fr; }
  .down-grid { grid-template-columns: 1fr; }
  .down-phone { justify-self: start; }
}
@media (max-width: 820px) {
  .nav { display: none; }
  .menu-btn { display: inline-flex; margin-left: auto; }
  .header-cta { display: none; }
  .section { padding: 40px 0; }
  .section-head { display: block; }
  .rail-actions { margin-top: 9px; }
  .hot-grid { grid-template-columns: 1fr; }
  .review-grid { grid-template-columns: 1fr 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
  .steps div:nth-child(2n) { border-right: 0; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 560px) {
  body { font-size: 16px; }
  .container { width: calc(100% - 28px); }
  .age-bar { font-size: 9.5px; }
  .header-inner { height: 60px; }
  .brand img { width: 32px; height: 32px; }
  .brand b { font-size: 17px; }
  .hero { padding: 30px 0 34px; }
  .hero h1 { font-size: 2.55rem; }
  .hero h1 em { font-size: .58em; }
  .hero-claim { font-size: 15px; }
  .hero-desc { font-size: 12px; }
  .hero-stats { grid-template-columns: 1fr 1fr; }
  .hero-stats div:nth-child(3) { border-left: 0; padding-left: 0; }
  .hero-stats b { font-size: 20px; }
  .hero-stage { height: 340px; }
  .h1 { width: 130px; height: 230px; top: 66px; }
  .h2 { width: 160px; height: 285px; left: 33%; top: 18px; }
  .h3 { width: 130px; height: 230px; top: 76px; }
  .h-note { left: 12%; font-size: 7px; }
  .line-card h3 { font-size: 23px; }
  .time-card { flex-basis: 150px; }
  .time-card .cover { height: 190px; }
  .hot-item { grid-template-columns: 28px 56px minmax(0,1fr) auto; gap: 9px; }
  .hot-item > img { width: 56px; height: 74px; }
  .hot-item h3 { font-size: 14px; }
  .library-grid { grid-template-columns: 1fr 1fr; }
  .lib-cover { height: 205px; }
  .topic-main { height: 300px; }
  .topic-list { min-height: auto; }
  .topic-overlay h3 { font-size: 19px; }
  .topic-list a { grid-template-columns: 78px minmax(0,1fr); }
  .topic-list em { display: none; }
  .review-grid { grid-template-columns: 1fr; }
  .down-phone { justify-self: center; }
  .phone-frame { width: 185px; }
  .phone-frame > img { height: 310px; }
  .steps { grid-template-columns: 1fr; }
  .steps div { border-right: 0; border-bottom: 1px solid var(--line); padding: 0 0 12px; }
  .steps div:last-child { border-bottom: 0; }
  .factory-steps { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 18px; }
  .footer-bottom { display: block; }
  .footer-bottom span { display: block; margin-top: 4px; }
  body { padding-bottom: 68px; }
  .mobile-download { display: flex; position: fixed; left: 12px; right: 12px; bottom: 12px; z-index: 120; align-items: center; justify-content: center; gap: 7px; padding: 13px 16px; border-radius: 999px; background: var(--coral); color: #fff; font-size: 15px; font-weight: 900; box-shadow: 0 12px 28px -8px rgba(242,100,76,.5); }
  .mobile-download span { font-size: 9px; font-weight: 500; opacity: .72; }
}
@media (max-width: 390px) {
  .hero h1 { font-size: 2.25rem; }
  .hot-item { grid-template-columns: 24px 48px minmax(0,1fr); }
  .hot-item > em { display: none; }
  .hot-item > img { width: 48px; height: 64px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}


/* 专题改成纯文字卡片，避免封面水印和文字互相打架 */
.special-card { min-height: 208px; padding: 22px; display: flex; flex-direction: column; justify-content: flex-end; border: 1px solid rgba(255,255,255,.14); background: radial-gradient(circle at 100% 0, rgba(73,216,194,.18), transparent 45%), var(--navy-2); }
.special-card::after { display: none; }
.special-card::before { content: ""; position: absolute; right: -22px; top: -40px; width: 150px; height: 150px; border: 1px solid rgba(73,216,194,.22); border-radius: 50%; box-shadow: 0 0 0 22px rgba(73,216,194,.04), 0 0 0 44px rgba(73,216,194,.03); }
.special-card div { position: static; z-index: 2; padding: 0; }
.special-card span { color: var(--aqua); }
.special-card h3 { margin: 4px 0 3px; font-size: 25px; }
.special-card p { color: rgba(255,255,255,.55); font-size: 11px; line-height: 1.7; }
.topic-main > img { opacity: .38; }
.topic-main::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(6,29,44,.15), rgba(6,29,44,.9)); }
.topic-overlay { z-index: 2; }

.topic-foot { margin-top: auto; padding: 12px; border: 1px solid var(--line); background: var(--paper); }
.topic-foot b { display: block; color: var(--aqua-dark); font-family: var(--mono); font-size: 9px; }
.topic-foot span { display: block; margin-top: 2px; color: var(--muted); font-size: 10px; }

.phone-frame::after { content: ""; position: absolute; left: 6px; right: 6px; bottom: 6px; height: 105px; border-radius: 0 0 17px 17px; background: linear-gradient(180deg, transparent, rgba(6,29,44,.92)); pointer-events: none; z-index: 1; }

.faq summary::-webkit-details-marker { display: none; }
.faq summary::marker { content: ""; }
.topic-list a { padding: 19px 0; }

@media (min-width: 1024px) {
  .hero-desc { font-size: 15px; }
  .section-head p:not(.kicker) { font-size: 15px; }
  .time-card h3 { font-size: 17px; }
  .time-card p { font-size: 11px; }
  .time-card small { font-size: 11px; }
  .hot-item h3 { font-size: 17px; }
  .hot-item p { font-size: 12px; }
  .line-card > p:not(.line-sub) { font-size: 13.5px; }
  .line-card li { font-size: 12.5px; }
  .special-card p { font-size: 12px; }
  .topic-list span { font-size: 12px; }
  .topic-foot span { font-size: 11px; }
  .lib-card p { font-size: 10.5px; }
  .factory-copy p { font-size: 13px; }
  .factory-steps p { font-size: 11.5px; }
  .review p { font-size: 13px; }
  .faq summary { font-size: 15px; }
  .faq details p { font-size: 12.5px; }
}


/* ===== 参考海角站结构的模板层 ===== */
:root { --serif: "Songti SC", "STSong", "SimSun", "Noto Serif SC", serif; }

.ticker { background: #081f2e; border-bottom: 1px solid rgba(255,255,255,.1); }
.ticker-inner { display: flex; align-items: center; gap: 10px; height: 42px; }
.ticker-tag { padding: 3px 7px; background: var(--coral); color: #fff; font-size: 10px; font-weight: 800; }
.ticker-inner p { margin: 0; color: rgba(255,255,255,.56); font-size: 11px; }
.ticker-inner a { margin-left: auto; color: var(--aqua); font-size: 11px; }

.hero h1 { font-family: var(--serif); font-weight: 700; letter-spacing: .02em; }
.hero h1 em { margin-top: 12px; color: rgba(255,255,255,.82); font-family: var(--sans); font-size: 19px; font-weight: 500; letter-spacing: .16em; }
.hero-stage { height: 430px; }
.hero-feature { position: relative; overflow: hidden; height: 380px; border: 1px solid rgba(255,255,255,.18); border-radius: 8px; background: var(--navy-2); }
.hero-feature > img { width: 100%; height: 100%; object-fit: cover; }
.hero-feature::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(6,29,44,.08), rgba(6,29,44,.82)); }
.hero-feature-copy { position: absolute; left: 16px; right: 16px; bottom: 14px; z-index: 2; }
.hero-feature-copy span { display: inline-block; padding: 2px 6px; background: var(--aqua); color: var(--navy); font-size: 8px; font-weight: 700; }
.hero-feature-copy h2 { margin: 5px 0 1px; color: #fff; font-size: 26px; }
.hero-feature-copy p { margin: 0; color: rgba(255,255,255,.62); font-size: 10px; }
.hero-mini { position: absolute; left: -18px; bottom: 0; z-index: 3; display: grid; grid-template-columns: 46px minmax(0,1fr) 18px; gap: 9px; align-items: center; width: 270px; padding: 9px; background: rgba(8,31,46,.95); border: 1px solid rgba(255,255,255,.2); border-radius: 5px; box-shadow: 0 14px 28px -12px rgba(0,0,0,.6); }
.hero-mini > img { width: 46px; height: 58px; object-fit: cover; border-radius: 3px; }
.hero-mini span { display: block; color: var(--aqua); font-family: var(--mono); font-size: 7px; }
.hero-mini b { display: block; margin: 1px 0; color: #fff; font-size: 12px; }
.hero-mini small { color: rgba(255,255,255,.45); font-size: 8px; }
.hero-mini i { color: var(--aqua); font-style: normal; }
.hero-stats { grid-template-columns: 1fr 1fr; max-width: 500px; }
.hero-stats div { padding: 10px 12px; border-left: 1px solid rgba(255,255,255,.14); border-bottom: 1px solid rgba(255,255,255,.14); }
.hero-stats div:nth-child(odd) { border-left: 0; padding-left: 0; }
.hero-stats div:nth-child(n+3) { border-bottom: 0; }
.hero-stats b { font-size: 27px; }

.timeline { border-top: 1px solid rgba(255,255,255,.14); }
.t-row { display: grid; grid-template-columns: 82px 22px minmax(0,1fr); color: #fff; }
.t-time { padding: 17px 12px 17px 0; text-align: right; }
.t-time b { display: block; color: var(--aqua); font-family: var(--mono); font-size: 16px; }
.t-time span { display: block; margin-top: 1px; color: rgba(255,255,255,.38); font-size: 9px; }
.t-dot { position: relative; border-left: 1px solid rgba(255,255,255,.16); }
.t-dot::before { content: ""; position: absolute; left: -4px; top: 24px; width: 7px; height: 7px; border-radius: 50%; background: var(--aqua); box-shadow: 0 0 0 3px rgba(73,216,194,.12); }
.t-panel { display: grid; grid-template-columns: 84px minmax(0,1fr) auto; gap: 14px; align-items: center; margin: 3px 0; padding: 11px 14px; border: 1px solid rgba(255,255,255,.14); border-radius: 5px; background: rgba(255,255,255,.025); }
.t-panel > img { width: 84px; height: 104px; object-fit: cover; border-radius: 3px; }
.t-tag { color: var(--coral); font-size: 9px; }
.t-panel h3 { margin: 2px 0 3px; color: #fff; font-size: 18px; }
.t-panel p { margin: 0; color: rgba(255,255,255,.42); font-size: 10px; }
.t-panel em { color: var(--coral); font-size: 10px; font-style: normal; }

#topics .line-card { background: rgba(255,255,255,.03); border-color: rgba(255,255,255,.14); border-top-color: var(--aqua); }
#topics .line-card h3 { color: #fff; }
#topics .line-sub { color: var(--aqua); }
#topics .line-card > p:not(.line-sub) { color: rgba(255,255,255,.5); }
#topics .line-card ul { border-color: rgba(255,255,255,.14); }
#topics .line-card li { color: rgba(255,255,255,.58); border-color: rgba(255,255,255,.12); }
#topics .special-head { border-color: rgba(255,255,255,.14); }
#topics .special-head b { color: #fff; }

@media (max-width: 1023px) {
  .hero-stage { height: 390px; }
  .hero-feature { height: 350px; }
}
@media (max-width: 560px) {
  .ticker-inner { height: 38px; gap: 7px; }
  .ticker-inner p { font-size: 9.5px; }
  .ticker-inner a { display: none; }
  .hero h1 em { font-size: 14px; letter-spacing: .1em; }
  .hero-stage { height: 320px; }
  .hero-feature { height: 280px; }
  .hero-feature-copy h2 { font-size: 21px; }
  .hero-mini { left: 0; width: 225px; grid-template-columns: 38px minmax(0,1fr) 14px; padding: 7px; }
  .hero-mini > img { width: 38px; height: 48px; }
  .hero-mini b { font-size: 10px; }
  .hero-stats b { font-size: 22px; }
  .t-row { grid-template-columns: 58px 16px minmax(0,1fr); }
  .t-time { padding: 12px 7px 12px 0; }
  .t-time b { font-size: 12px; }
  .t-time span { font-size: 8px; }
  .t-panel { grid-template-columns: 58px minmax(0,1fr); gap: 9px; padding: 8px; }
  .t-panel > img { width: 58px; height: 74px; }
  .t-panel h3 { font-size: 14px; }
  .t-panel p { font-size: 8.5px; }
  .t-panel em { display: none; }
}

.brand b { font-family: var(--serif); font-weight: 700; letter-spacing: .02em; }
.section-head h2 { font-family: var(--serif); font-weight: 700; letter-spacing: 0; line-height: 1.2; }
.hero-feature-copy h2 { font-family: var(--serif); font-weight: 700; }