:root {
  --bg: #eef6fa;
  --paper: #ffffff;
  --ink: #071a2b;
  --muted: #647786;
  --dim: #8ea2af;
  --blue: #1f5dff;
  --blue-2: #0d3fd1;
  --cyan: #62e6d0;
  --coral: #ff6b4a;
  --navy: #071a2b;
  --line: #dce8ef;
  --sans: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
  --mono: ui-monospace, "SFMono-Regular", "Cascadia Mono", Consolas, monospace;
}

*, *::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: 20px; line-height: 1.72; -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(--blue); color: #fff; }
:focus-visible { outline: 3px solid var(--blue); outline-offset: 3px; }

.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.ico { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; flex: 0 0 auto; }

.container { width: min(1220px, calc(100% - 44px)); margin-inline: auto; }
.section { padding: 82px 0; background: var(--paper); }

.age-bar { height: 30px; display: flex; align-items: center; justify-content: center; background: #05121e; color: rgba(255,255,255,.48); font-size: 10px; letter-spacing: .05em; }

/* header */
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,.92); border-bottom: 1px solid var(--line); -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px); }
.header-inner { display: flex; align-items: center; gap: 20px; height: 68px; }
.brand { display: inline-flex; align-items: center; gap: 8px; flex: 0 0 auto; }
.brand img { width: 36px; height: 36px; border-radius: 9px; object-fit: cover; }
.brand b { font-size: 21px; letter-spacing: -.04em; font-weight: 900; }
.nav { display: flex; gap: 20px; margin-left: auto; }
.nav a { color: var(--muted); font-size: 14px; }
.nav a:hover { color: var(--blue); }
.header-cta { display: inline-flex; align-items: center; gap: 6px; padding: 9px 18px; border-radius: 999px; background: var(--blue); color: #fff; font-size: 13px; font-weight: 800; white-space: nowrap; }
.header-cta .ico { width: 15px; height: 15px; }
.header-cta:hover { background: var(--blue-2); }
.menu-btn { display: none; width: 40px; height: 40px; align-items: center; justify-content: center; border: 1px solid var(--line); border-radius: 9px; }
.menu-btn i { position: relative; display: block; width: 17px; height: 1.5px; background: var(--ink); }
.menu-btn i::before, .menu-btn i::after { content: ""; position: absolute; left: 0; width: 17px; height: 1.5px; background: var(--ink); 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: #fff; border-top: 1px solid var(--line); }
.mobile-nav.is-open { display: block; }
.mobile-nav a { display: block; padding: 11px 2px; border-bottom: 1px solid var(--line); color: var(--muted); font-size: 14px; }
.mobile-nav .header-cta { margin-top: 12px; color: #fff; }

/* hero */
.hero { position: relative; overflow: hidden; background: radial-gradient(circle at 83% 20%, rgba(31,93,255,.34), transparent 36%), radial-gradient(circle at 12% 100%, rgba(98,230,208,.15), transparent 38%), #061522; color: #fff; padding: 54px 0 0; }
.hero-mesh { position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px); background-size: 52px 52px; -webkit-mask-image: radial-gradient(circle at 60% 40%, #000, transparent 75%); mask-image: radial-gradient(circle at 60% 40%, #000, transparent 75%); }
.hero-grid { position: relative; z-index: 2; display: grid; grid-template-columns: 1.04fr .96fr; gap: 26px; align-items: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 7px; margin: 0 0 11px; color: var(--cyan); font-family: var(--mono); font-size: 10px; letter-spacing: .08em; }
.eyebrow .ico { width: 14px; height: 14px; }
.hero h1 { margin: 0 0 4px; font-size: clamp(64px, 7.4vw, 102px); line-height: .94; letter-spacing: -.07em; font-weight: 900; }
.hero-sub { margin: 0 0 13px; font-size: clamp(24px, 2.8vw, 34px); line-height: 1.42; font-weight: 700; color: #fff; }
.hero-desc { max-width: 530px; margin: 0 0 18px; color: rgba(255,255,255,.56); font-size: 15px; line-height: 1.85; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 7px; padding: 12px 22px; border: 1.5px solid transparent; border-radius: 7px; font-size: 14.5px; font-weight: 800; transition: transform .18s ease, background .18s ease; }
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--blue-2); }
.btn-glass { border-color: rgba(255,255,255,.28); color: #fff; background: rgba(255,255,255,.04); }
.btn-glass:hover { background: #fff; color: var(--navy); }
.btn-dark { background: var(--navy); color: #fff; }
.btn-dark:hover { background: var(--blue); }
.hero-pills { display: flex; flex-wrap: wrap; gap: 6px; margin: 15px 0 0; padding: 0; list-style: none; }
.hero-pills li { padding: 3px 8px; border: 1px solid rgba(255,255,255,.17); border-radius: 999px; color: rgba(255,255,255,.55); font-size: 10px; }

.hero-visual { position: relative; height: 520px; }
.phone { position: absolute; overflow: hidden; border: 5px solid #fff; border-radius: 25px; background: #0b2437; box-shadow: 0 24px 55px -22px rgba(0,0,0,.8); }
.phone > img { width: 100%; height: 100%; object-fit: cover; }
.p-front { width: 228px; height: 430px; left: 32%; top: 38px; z-index: 3; transform: rotate(-2deg); }
.p-back { width: 165px; height: 300px; left: 2%; top: 140px; z-index: 1; transform: rotate(-10deg); }
.p-side { width: 165px; height: 300px; right: 0; top: 110px; z-index: 2; transform: rotate(9deg); }
.p-overlay { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; background: rgba(3,15,26,.25); color: #fff; }
.p-overlay .ico { width: 44px; height: 44px; fill: rgba(255,255,255,.9); stroke: #071a2b; }
.phone-top { position: absolute; left: 0; right: 0; top: 0; display: flex; align-items: center; gap: 7px; padding: 11px 10px 20px; background: linear-gradient(180deg, rgba(3,15,26,.85), transparent); }
.phone-top img { width: 25px; height: 25px; border-radius: 6px; }
.phone-top span { font-size: 10px; font-weight: 700; }
.phone-top i { margin-left: auto; color: rgba(255,255,255,.6); font-style: normal; }
.phone-bottom { position: absolute; left: 0; right: 0; bottom: 0; padding: 38px 12px 12px; background: linear-gradient(0deg, rgba(3,15,26,.92), transparent); }
.phone-bottom b { display: block; font-size: 16px; }
.phone-bottom small { display: block; margin-top: 1px; color: rgba(255,255,255,.55); font-size: 9px; }
.mini-bar { display: block; height: 2px; margin-top: 8px; background: rgba(255,255,255,.2); position: relative; }
.mini-bar i { position: absolute; inset: 0 auto 0 0; width: 42%; background: var(--cyan); }
.float-card { position: absolute; z-index: 5; display: flex; align-items: center; gap: 8px; padding: 9px 11px; border: 1px solid rgba(255,255,255,.2); border-radius: 8px; background: rgba(8,28,44,.88); color: #fff; -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); }
.float-card .ico { width: 20px; height: 20px; color: var(--cyan); }
.float-card b { display: block; font-size: 13px; line-height: 1.1; }
.float-card span { display: block; color: rgba(255,255,255,.45); font-size: 8px; }
.float-card.speed { left: -8px; top: 26px; }
.float-card.clean { right: -10px; bottom: 28px; }

.hero-stats { position: relative; z-index: 2; display: grid; grid-template-columns: repeat(4,1fr); margin-top: 34px; border-top: 1px solid rgba(255,255,255,.16); }
.hero-stats div { display: grid; grid-template-columns: 26px 1fr; gap: 0 8px; align-items: center; padding: 16px 15px; border-left: 1px solid rgba(255,255,255,.14); }
.hero-stats div:first-child { border-left: 0; padding-left: 0; }
.hero-stats .ico { grid-row: 1 / 3; color: var(--cyan); width: 20px; height: 20px; }
.hero-stats b { font-size: 25px; line-height: 1.1; }
.hero-stats b em { color: var(--cyan); font-size: 11px; font-style: normal; }
.hero-stats span { color: rgba(255,255,255,.38); font-size: 9px; }

/* ticker */
.logo-ticker { overflow: hidden; background: var(--cyan); border-top: 1px solid #05121e; border-bottom: 1px solid #05121e; }
.ticker-track { display: flex; width: max-content; animation: tick 26s linear infinite; }
.ticker-track span { display: inline-flex; align-items: center; gap: 6px; padding: 8px 22px; font-family: var(--mono); font-size: 10px; letter-spacing: .06em; white-space: nowrap; }
.ticker-track .ico { width: 13px; height: 13px; }
@keyframes tick { to { transform: translateX(-50%); } }

/* heads */
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 26px; margin-bottom: 30px; }
.label { margin: 0 0 7px; color: var(--blue); font-family: var(--mono); font-size: 10px; letter-spacing: .08em; }
.section-head h2 { margin: 0; font-size: clamp(38px, 4.6vw, 62px); line-height: 1.04; letter-spacing: -.06em; font-weight: 900; }
.section-head h2 em { color: var(--blue); font-style: normal; }
.head-aside { max-width: 340px; margin: 0; color: var(--muted); font-size: 13px; line-height: 1.7; text-align: right; }

/* lines */
.lines-section { background: var(--bg); }
.line-cards { display: grid; grid-template-columns: repeat(3,1fr); gap: 13px; }
.line-card { display: grid; grid-template-rows: 230px auto; overflow: hidden; border: 1px solid var(--line); border-radius: 14px; background: #fff; }
.line-img { position: relative; overflow: hidden; }
.line-img img { width: 100%; height: 100%; object-fit: cover; }
.line-img > span { position: absolute; left: 10px; top: 10px; display: inline-flex; align-items: center; gap: 5px; padding: 4px 7px; border-radius: 4px; background: rgba(7,26,43,.82); color: #fff; font-size: 9px; }
.line-img .ico { width: 12px; height: 12px; }
.line-copy { padding: 16px 17px 18px; }
.line-copy h3 { margin: 0 0 4px; font-size: 25px; letter-spacing: -.04em; }
.line-copy p { margin: 0 0 10px; color: var(--muted); font-size: 13.5px; line-height: 1.7; }
.line-copy b { display: inline-flex; align-items: center; gap: 5px; color: var(--blue); font-family: var(--mono); font-size: 10px; }
.line-copy .ico { width: 13px; height: 13px; }

/* hot */
.hot-section { background: #fff; }
.rail-actions { display: flex; gap: 6px; }
.rail-btn { width: 36px; height: 36px; border: 1px solid var(--line); border-radius: 50%; background: var(--bg); font-size: 15px; }
.rail-btn:hover { background: var(--blue); border-color: var(--blue); color: #fff; }
.cover-rail { display: flex; gap: 12px; overflow-x: auto; scroll-snap-type: x mandatory; padding: 2px 1px 14px; scrollbar-width: thin; scrollbar-color: var(--blue) transparent; }
.cover-card { flex: 0 0 190px; scroll-snap-align: start; }
.cover-card img { width: 100%; height: 260px; object-fit: cover; border-radius: 9px; }
.cover-card span { display: block; margin-top: 7px; color: var(--blue); font-family: var(--mono); font-size: 8px; }
.cover-card h3 { margin: 2px 0 0; font-size: 14.5px; letter-spacing: -.02em; }

/* rank */
.rank-section { background: var(--bg); }
.rank-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 38px; align-items: start; }
.rank-intro h2 { margin: 0 0 7px; font-size: clamp(38px,4.5vw,60px); line-height: 1.03; letter-spacing: -.06em; }
.rank-intro h2 em { color: var(--blue); font-style: normal; }
.rank-intro > p:not(.label) { margin: 0 0 17px; color: var(--muted); font-size: 14px; line-height: 1.8; }
.rank-stack { width: 100%; height: 235px; margin-top: 24px; object-fit: cover; border-radius: 12px; }
.rank-list { border-top: 2px solid var(--ink); }
.rank-list a { display: grid; grid-template-columns: 36px 55px minmax(0,1fr) 50px 18px; gap: 11px; align-items: center; padding: 11px 0; border-bottom: 1px solid var(--line); }
.rank-list b { color: var(--blue); font-family: var(--mono); font-size: 11px; }
.rank-list img { width: 55px; height: 72px; object-fit: cover; border-radius: 4px; }
.rank-list h3 { margin: 0 0 1px; font-size: 16px; }
.rank-list p { margin: 0; color: var(--dim); font-size: 9px; }
.rank-list em { color: var(--blue); font-family: var(--mono); font-size: 10px; font-style: normal; text-align: right; }
.rank-list .ico { width: 15px; height: 15px; color: var(--blue); }

/* UI */
.screens-section { background: #fff; }
.ui-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 12px; }
.ui-card { text-align: center; }
.ui-phone { position: relative; overflow: hidden; width: 100%; height: 390px; border: 5px solid #e6eef3; border-radius: 23px; background: #0b2437; box-shadow: 0 15px 30px -25px rgba(7,26,43,.6); }
.ui-phone > img { width: 100%; height: 100%; object-fit: cover; opacity: .75; }
.ui-status { position: absolute; left: 0; right: 0; top: 0; z-index: 2; display: flex; align-items: center; gap: 6px; padding: 8px 9px 18px; background: linear-gradient(180deg, rgba(3,16,27,.9), transparent); color: #fff; }
.ui-status span { font-family: var(--mono); font-size: 7px; }
.ui-status b { font-size: 8px; }
.ui-status .ico { margin-left: auto; width: 12px; height: 12px; }
.ui-caption { position: absolute; left: 0; right: 0; bottom: 0; z-index: 2; padding: 35px 9px 10px; background: linear-gradient(0deg, rgba(3,16,27,.92), transparent); color: #fff; text-align: left; }
.ui-caption b { display: block; font-size: 12px; }
.ui-caption span { display: block; color: rgba(255,255,255,.55); font-size: 7px; }
.ui-caption i { position: absolute; right: 9px; bottom: 9px; display: flex; align-items: center; justify-content: center; width: 24px; height: 24px; border-radius: 50%; background: var(--blue); color: #fff; }
.ui-caption .ico { width: 12px; height: 12px; }
.ui-card > p { display: inline-flex; align-items: center; gap: 5px; margin: 8px 0 0; color: var(--muted); font-size: 10px; }
.ui-card > p .ico { width: 13px; height: 13px; color: var(--blue); }

/* features */
.feature-section { background: var(--bg); }
.feature-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 12px; }
.feature-grid article { padding: 22px; border: 1px solid var(--line); border-radius: 12px; background: #fff; }
.feature-grid .ico { width: 26px; height: 26px; color: var(--blue); }
.feature-grid h3 { margin: 11px 0 4px; font-size: 22px; letter-spacing: -.03em; }
.feature-grid p { margin: 0; color: var(--muted); font-size: 13.5px; line-height: 1.75; }

/* studio */
.studio-section { background: radial-gradient(circle at 15% 15%, rgba(98,230,208,.14), transparent 40%), var(--navy); color: #fff; }
.studio-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 46px; align-items: center; }
.studio-visual { position: relative; height: 480px; }
.studio-orbit { position: absolute; left: 50%; top: 50%; width: 390px; height: 390px; transform: translate(-50%,-50%); border: 1px solid rgba(98,230,208,.25); border-radius: 50%; box-shadow: 0 0 0 42px rgba(98,230,208,.035), 0 0 0 84px rgba(98,230,208,.025); }
.studio-phone { position: absolute; left: 50%; top: 50%; width: 240px; height: 430px; transform: translate(-50%,-50%) rotate(-3deg); overflow: hidden; border: 5px solid #fff; border-radius: 25px; box-shadow: 0 28px 50px -20px #000; }
.studio-phone img { width: 100%; height: 100%; object-fit: cover; }
.studio-play { position: absolute; left: 50%; top: 50%; width: 58px; height: 58px; transform: translate(-50%,-50%); display: flex; align-items: center; justify-content: center; border-radius: 50%; background: rgba(7,26,43,.72); color: #fff; }
.studio-play .ico { width: 26px; height: 26px; fill: #fff; }
.studio-tag { position: absolute; left: 3%; bottom: 5px; display: inline-flex; align-items: center; gap: 5px; padding: 6px 9px; border: 1px solid rgba(98,230,208,.4); border-radius: 999px; color: var(--cyan); font-family: var(--mono); font-size: 8px; }
.studio-tag .ico { width: 12px; height: 12px; }
.studio-section .label { color: var(--cyan); }
.studio-copy h2 { margin: 0 0 8px; font-size: clamp(40px,4.6vw,62px); line-height: 1.02; letter-spacing: -.06em; }
.studio-copy h2 em { color: var(--cyan); font-style: normal; }
.studio-copy > p:not(.label) { max-width: 520px; margin: 0 0 20px; color: rgba(255,255,255,.55); font-size: 14px; line-height: 1.85; }
.studio-steps { display: grid; grid-template-columns: repeat(3,1fr); gap: 9px; margin-bottom: 23px; }
.studio-steps div { padding: 14px; border: 1px solid rgba(255,255,255,.16); border-radius: 8px; }
.studio-steps .ico { width: 20px; height: 20px; color: var(--cyan); }
.studio-steps b { display: block; margin-top: 8px; color: rgba(255,255,255,.35); font-family: var(--mono); font-size: 9px; }
.studio-steps h3 { margin: 2px 0 2px; font-size: 18px; }
.studio-steps span { color: rgba(255,255,255,.45); font-size: 9px; }
.studio-section .btn-dark { background: var(--cyan); color: var(--navy); }
.studio-section .btn-dark:hover { background: #fff; }

/* reviews */
.reviews-section { background: #fff; }
.review-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 11px; }
.review { display: grid; grid-template-columns: 48px minmax(0,1fr); gap: 12px; padding: 17px; border: 1px solid var(--line); border-radius: 10px; background: var(--bg); }
.avatar { width: 48px; height: 48px; overflow: hidden; border-radius: 50%; background: var(--blue); }
.avatar img { width: 100%; height: 100%; object-fit: cover; }
.stars { color: var(--coral); font-size: 11px; letter-spacing: 1px; }
.review p { margin: 4px 0 6px; color: var(--muted); font-size: 13.5px; line-height: 1.75; }
.review span { color: var(--dim); font-family: var(--mono); font-size: 8px; }

/* download */
.download-section { background: radial-gradient(circle at 85% 20%, rgba(31,93,255,.3), transparent 38%), #061522; color: #fff; }
.download-section .label { color: var(--cyan); }
.down-grid { display: grid; grid-template-columns: 1.08fr .92fr; gap: 34px; align-items: center; }
.down-copy h2 { margin: 0 0 8px; color: #fff; font-size: clamp(40px,5vw,66px); line-height: 1.02; letter-spacing: -.06em; }
.down-copy h2 em { color: var(--cyan); font-style: normal; }
.down-copy > p:not(.label) { max-width: 510px; margin: 0 0 17px; color: rgba(255,255,255,.55); font-size: 14.5px; line-height: 1.8; }
.down-list { display: grid; gap: 8px; margin-bottom: 21px; }
.down-list div { display: grid; grid-template-columns: 24px 110px minmax(0,1fr); gap: 8px; align-items: center; padding: 8px 0; border-bottom: 1px solid rgba(255,255,255,.14); }
.down-list .ico { color: var(--cyan); width: 16px; height: 16px; }
.down-list b { font-size: 13px; }
.down-list span { color: rgba(255,255,255,.4); font-size: 10px; }
.down-side { display: flex; align-items: center; justify-content: center; gap: 20px; }
.down-phone { position: relative; width: 195px; height: 380px; overflow: hidden; border: 5px solid #fff; border-radius: 23px; box-shadow: 16px 18px 0 rgba(98,230,208,.3); }
.down-phone > img { width: 100%; height: 100%; object-fit: cover; }
.down-ui { position: absolute; left: 0; right: 0; bottom: 0; padding: 38px 10px 11px; background: linear-gradient(0deg, rgba(3,16,27,.94), transparent); }
.down-ui img { width: 25px; height: 25px; border-radius: 6px; }
.down-ui b { display: block; margin-top: 4px; font-size: 12px; }
.down-ui span { display: block; color: rgba(255,255,255,.5); font-size: 8px; }
.qr-box { padding: 11px; border: 1px solid rgba(255,255,255,.2); border-radius: 8px; background: rgba(255,255,255,.05); text-align: center; }
.qr-box img { width: 105px; height: 105px; background: #fff; padding: 4px; border-radius: 4px; }
.qr-box p { margin: 7px 0 0; font-size: 11px; font-weight: 700; }
.qr-box span { display: block; color: rgba(255,255,255,.4); font-size: 8px; font-weight: 400; }

/* faq */
.faq-section { background: var(--bg); }
.faq-grid { display: grid; grid-template-columns: .75fr 1.25fr; gap: 36px; align-items: start; }
.faq-visual { position: relative; }
.faq-visual h2 { margin: 0 0 17px; font-size: clamp(40px,4.6vw,62px); line-height: 1.02; letter-spacing: -.06em; }
.faq-visual h2 em { color: var(--blue); font-style: normal; }
.faq-visual > img { width: 100%; height: 300px; object-fit: cover; border-radius: 12px; }
.faq-icons { position: absolute; left: 12px; bottom: 12px; display: flex; gap: 6px; }
.faq-icons .ico { width: 30px; height: 30px; padding: 7px; border-radius: 50%; background: rgba(255,255,255,.92); color: var(--blue); }
.faq-list { border-top: 2px solid var(--ink); }
.faq-item { padding: 14px 0; border-bottom: 1px solid var(--line); }
.faq-item b { color: var(--blue); font-family: var(--mono); font-size: 9px; }
.faq-item h3 { margin: 3px 0 3px; font-size: 17px; letter-spacing: -.02em; }
.faq-item p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.75; }

/* footer */
.footer { background: #04111c; color: rgba(255,255,255,.46); padding: 33px 0 18px; }
.footer-inner { display: grid; grid-template-columns: auto 1fr auto; gap: 20px; align-items: center; }
.footer-brand { display: inline-flex; align-items: center; gap: 8px; }
.footer-brand img { width: 34px; height: 34px; border-radius: 8px; }
.footer-brand b { color: #fff; font-size: 18px; }
.footer-inner > p { margin: 0; font-size: 11.5px; }
.footer-links { display: flex; gap: 14px; }
.footer-links a { color: rgba(255,255,255,.5); font-size: 10.5px; }
.footer-links a:hover { color: var(--cyan); }
.footer-inner small { grid-column: 1 / -1; padding-top: 13px; border-top: 1px solid rgba(255,255,255,.12); font-family: var(--mono); font-size: 8px; color: rgba(255,255,255,.25); }

.mobile-download { display: none; }

/* PC */
@media (min-width: 1024px) {
  body { font-size: 20px; }
  .nav a { font-size: 15px; }
  .hero-desc { font-size: 16px; }
  .hero-pills li { font-size: 10.5px; }
  .hero-stats span { font-size: 10px; }
  .section-head p { font-size: 14px; }
  .line-copy p { font-size: 14.5px; }
  .line-copy b { font-size: 11px; }
  .cover-card h3 { font-size: 15.5px; }
  .rank-intro > p:not(.label) { font-size: 15px; }
  .rank-list h3 { font-size: 17px; }
  .rank-list p { font-size: 10px; }
  .feature-grid p { font-size: 14.5px; }
  .review p { font-size: 14.5px; }
  .faq-item h3 { font-size: 19px; }
  .faq-item p { font-size: 14px; }
  .footer-inner > p { font-size: 12.5px; }
  .footer-links a { font-size: 11.5px; }
}

/* responsive */
@media (max-width: 1023px) {
  .hero-grid { grid-template-columns: 1fr; gap: 18px; }
  .hero-visual { width: 100%; max-width: 480px; margin-inline: auto; height: 460px; }
  .hero-stats { grid-template-columns: 1fr 1fr; }
  .line-cards { grid-template-columns: 1fr; }
  .ui-grid { grid-template-columns: 1fr 1fr; }
  .rank-grid { grid-template-columns: 1fr; }
  .studio-grid { grid-template-columns: 1fr; gap: 20px; }
  .studio-visual { height: 420px; }
  .down-grid { grid-template-columns: 1fr; }
  .faq-grid { grid-template-columns: 1fr; }
  .faq-visual > img { height: 240px; }
}
@media (max-width: 820px) {
  .nav { display: none; }
  .menu-btn { display: inline-flex; margin-left: auto; }
  .header-cta { display: none; }
  .section { padding: 50px 0; }
  .section-head { display: block; }
  .head-aside { margin-top: 9px; text-align: left; }
  .hero h1 { font-size: 6.4rem; }
  .hero-visual { max-width: 430px; height: 430px; }
  .p-front { width: 200px; height: 380px; left: 30%; }
  .p-back, .p-side { width: 135px; height: 250px; }
  .cover-card { flex-basis: 165px; }
  .cover-card img { height: 230px; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .review-grid { grid-template-columns: 1fr; }
  .down-side { justify-content: flex-start; flex-wrap: wrap; }
  .footer-inner { grid-template-columns: 1fr auto; }
  .footer-inner > p { grid-column: 1 / -1; }
}
@media (max-width: 560px) {
  body { font-size: 16px; }
  .container { width: calc(100% - 28px); }
  .age-bar { font-size: 8.5px; }
  .header-inner { height: 60px; }
  .brand img { width: 32px; height: 32px; }
  .brand b { font-size: 18px; }
  .hero { padding-top: 32px; }
  .hero h1 { font-size: 4.5rem; }
  .hero-sub { font-size: 21px; }
  .hero-visual { height: 360px; max-width: 340px; }
  .p-front { width: 165px; height: 315px; left: 28%; top: 24px; }
  .p-back, .p-side { width: 108px; height: 200px; }
  .p-back { left: 0; top: 100px; }
  .p-side { right: 0; top: 82px; }
  .phone { border-width: 4px; border-radius: 19px; }
  .float-card { display: none; }
  .hero-stats { margin-top: 20px; }
  .hero-stats div { padding: 11px 9px; grid-template-columns: 20px 1fr; gap: 0 6px; }
  .hero-stats b { font-size: 20px; }
  .hero-stats .ico { width: 16px; height: 16px; }
  .line-img { height: 210px; }
  .line-card { grid-template-rows: 210px auto; }
  .ui-grid { gap: 8px; }
  .ui-phone { height: 300px; }
  .feature-grid { grid-template-columns: 1fr; }
  .studio-visual { height: 380px; }
  .studio-phone { width: 200px; height: 360px; }
  .studio-orbit { width: 300px; height: 300px; }
  .studio-steps { grid-template-columns: 1fr; }
  .faq-visual > img { height: 200px; }
  .down-phone { width: 170px; height: 330px; }
  .qr-box img { width: 90px; height: 90px; }
  .footer-inner { display: block; }
  .footer-links { margin: 13px 0; }
  .footer-inner small { display: block; margin-top: 13px; }
  body { padding-bottom: 64px; }
  .mobile-download { display: flex; position: fixed; left: 12px; right: 12px; bottom: 12px; z-index: 120; align-items: center; justify-content: center; gap: 7px; padding: 12px 16px; border-radius: 8px; background: var(--blue); color: #fff; font-size: 15px; font-weight: 900; }
  .mobile-download span { font-size: 8px; font-weight: 500; opacity: .72; }
}
@media (max-width: 390px) {
  .hero h1 { font-size: 4rem; }
  .hero-visual { height: 330px; }
  .p-front { width: 150px; height: 290px; }
  .p-back, .p-side { width: 96px; height: 180px; }
  .ui-phone { height: 270px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .ticker-track { animation: none; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}


/* ===== PC 端字号兜底：不再出现 7–10px 的说明文字 ===== */
@media (min-width: 1024px) {
  .age-bar { font-size: 12px; }
  .label { font-size: 12px; }
  .eyebrow { font-size: 12px; }
  .hero-pills li { font-size: 12.5px; }
  .hero-stats span { font-size: 12px; }
  .hero-stats b { font-size: 28px; }
  .ticker-track span { font-size: 12px; }

  .line-img > span { font-size: 12px; }
  .line-copy p { font-size: 15px; }
  .line-copy b { font-size: 12px; }

  .cover-card span { font-size: 12px; }
  .cover-card h3 { font-size: 16px; }

  .rank-list b { font-size: 13px; }
  .rank-list p { font-size: 12.5px; }
  .rank-list em { font-size: 13px; }

  .ui-status span { font-size: 11px; }
  .ui-status b { font-size: 11px; }
  .ui-status .ico { width: 14px; height: 14px; }
  .ui-caption b { font-size: 14px; }
  .ui-caption span { font-size: 11px; }
  .ui-card > p { font-size: 12.5px; }

  .feature-grid p { font-size: 15px; }

  .studio-tag { font-size: 12px; }
  .studio-steps b { font-size: 12px; }
  .studio-steps h3 { font-size: 19px; }
  .studio-steps span { font-size: 12px; }

  .review p { font-size: 15px; }
  .review span { font-size: 12px; }

  .down-list span { font-size: 12.5px; }
  .qr-box p { font-size: 13px; }
  .qr-box span { font-size: 12px; }

  .faq-item b { font-size: 12px; }
  .faq-item h3 { font-size: 19px; }
  .faq-item p { font-size: 14.5px; }

  .footer-brand b { font-size: 20px; }
  .footer-inner > p { font-size: 13px; }
  .footer-links a { font-size: 12.5px; }
  .footer-inner small { font-size: 12px; color: rgba(255,255,255,.48); }
}

@media (min-width: 1024px) {
  .phone-top span { font-size: 11px; }
  .phone-bottom small { font-size: 10.5px; }
  .float-card span { font-size: 11px; }
  .down-ui span { font-size: 11px; }
  .review .stars { font-size: 12px; }
}