/* =====================================================
   5cm.fun — v4「沉下去」
   首屏水面视频 → 往下滑「入水」→ 左侧水深刻度 → 最后「上岸」到下载区。
   深水底色 + 浮漂红单一强调色；标题字体得意黑（fonts/smiley-subset.woff2，只含页面用字，
   改了 .disp 文案要重跑 scripts/v4/subset_font.py）。
   index / weather / download / compliance 使用；交互见 js/v4.js。
   旧脚本依赖的钩子保留：.navbar / .mobile-nav(-toggle/-overlay) / .download-btn[data-app] / #qrcode-modal / #contactModal
   ===================================================== */

@font-face { font-family: "5cm Display"; src: url("fonts/smiley-subset.woff2") format("woff2"); font-display: swap; }

/* 1. Tokens */
:root {
  --water-0: #0A2426; --water-1: #0E3133; --water-2: #154447; --deep: #071B1D;
  --cream: #EFEBDD; --cream-2: #C9D1C8; --muted: #93A59D; --rule: rgba(239, 235, 221, .14);
  --float: #C93F1C; --float-hi: #E8603A; --float-hover: #B23515;
  --paper: #F1ECE0; --paper-2: #E7E1D2; --ink: #0E2626; --ink-2: #3C504B; --ink-3: #5B6B66; --rule-ink: rgba(14, 38, 38, .14);
  --disp: "5cm Display", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --sans: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --ease: cubic-bezier(.16, 1, .3, 1);
  --nav-h: 64px;
  --hp: 0;
}

/* 2. Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { background: var(--water-0); scroll-padding-top: calc(var(--nav-h) + 12px); -webkit-text-size-adjust: 100%; }
body { font-family: var(--sans); color: var(--cream); background: var(--water-0); font-size: 16px; line-height: 1.75; -webkit-font-smoothing: antialiased; overflow-x: hidden; }
img, video { display: block; max-width: 100%; }
img { height: auto; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
:focus-visible { outline: 2px solid var(--float-hi); outline-offset: 3px; }
svg.i { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; flex-shrink: 0; }
.wrap, .container { width: min(1200px, 100% - 48px); margin: 0 auto; }
.disp { font-family: var(--disp); font-weight: 400; letter-spacing: .01em; }
.skip-link { position: absolute; left: -9999px; top: 0; z-index: 9999; background: var(--cream); color: var(--ink); padding: 8px 16px; }
.skip-link:focus { left: 0; }
.sec, .footer { position: relative; z-index: 1; }

/* 3. Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 52px; padding: 0 28px; border-radius: 999px; font-weight: 600; font-size: 17px; line-height: 1; white-space: nowrap; cursor: pointer; transition: background .2s, color .2s, box-shadow .2s, transform .3s var(--ease); }
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--float); color: #FFF6EC; }
.btn-primary:hover { background: var(--float-hover); }
.btn-ghost { background: rgba(239, 235, 221, .08); color: var(--cream); box-shadow: inset 0 0 0 1px rgba(239, 235, 221, .35); }
.btn-ghost:hover { background: rgba(239, 235, 221, .16); }
.btn-line, .btn-secondary { background: transparent; color: var(--ink); box-shadow: inset 0 0 0 1.5px var(--ink); }
.btn-line:hover, .btn-secondary:hover { background: var(--paper-2); }
.btn-sm { height: 44px; padding: 0 20px; font-size: 15px; }
.btn svg { width: 18px; height: 18px; }

/* 4. Navbar（main-new.js 会加 .scrolled；v4.js 过了首屏加 .is-solid） */
.navbar { position: fixed; inset: 0 0 auto 0; z-index: 100; height: var(--nav-h); transition: background .4s var(--ease), border-color .4s; border-bottom: 1px solid transparent; }
.navbar.is-solid { background: rgba(7, 27, 29, .8); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-bottom-color: var(--rule); }
.nav-wrapper { width: min(1200px, 100% - 48px); height: 100%; margin: 0 auto; display: flex; align-items: center; gap: 40px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 600; font-size: 18px; color: var(--cream); }
.logo img { width: 32px; height: 32px; border-radius: 8px; }
.nav-links { display: flex; gap: 32px; flex: 1; font-size: 15px; color: var(--cream-2); }
.nav-links a { display: block; padding: 6px 0; transition: color .2s; }
.nav-links a:hover, .nav-links a.nav-current { color: var(--cream); }
.nav-links a.nav-current { box-shadow: inset 0 -1.5px 0 var(--float-hi); }
.nav-toggle { display: none; width: 44px; height: 44px; align-items: center; justify-content: center; margin-left: auto; color: var(--cream); }
.mobile-nav { display: none; position: fixed; top: var(--nav-h); left: 0; right: 0; z-index: 99; flex-direction: column; padding: 8px 24px 24px; background: rgba(7, 27, 29, .97); border-bottom: 1px solid var(--rule); }
.mobile-nav.active { display: flex; }
.mobile-nav a { padding: 14px 0; border-bottom: 1px solid var(--rule); font-size: 17px; color: var(--cream-2); }
.mobile-nav a.nav-current { color: var(--cream); }
.mobile-nav .btn { margin-top: 18px; width: 100%; }
.mobile-nav-overlay { display: none; position: fixed; inset: 0; z-index: 98; background: rgba(4, 12, 13, .55); }
.mobile-nav-overlay.active { display: block; }

/* 5. 水深刻度（桌面） */
.gauge { position: fixed; left: 28px; top: 50%; z-index: 50; transform: translateY(-50%); display: flex; flex-direction: column; align-items: center; gap: 14px; opacity: 0; transition: opacity 1s .8s; pointer-events: none; }
.is-in .gauge { opacity: 1; }
.g-label { font-size: 12px; letter-spacing: .2em; color: var(--cream-2); writing-mode: vertical-rl; }
.g-track { position: relative; width: 24px; height: 44vh; background: linear-gradient(var(--rule), var(--rule)) center / 1px 100% no-repeat; }
.g-track::before { content: ""; position: absolute; inset: 0; background: repeating-linear-gradient(to bottom, rgba(239, 235, 221, .28) 0 1px, transparent 1px 10%); -webkit-mask: linear-gradient(90deg, transparent 7px, #000 7px 17px, transparent 17px); mask: linear-gradient(90deg, transparent 7px, #000 7px 17px, transparent 17px); }
.g-float { position: absolute; left: 50%; top: 0; width: 14px; height: 40px; margin: -8px 0 0 -7px; transition: top .25s linear; }
.g-num { font-family: var(--disp); font-size: 26px; line-height: 1; color: var(--cream); }
.g-num small { font-size: 14px; margin-left: 2px; color: var(--cream-2); }
.gauge.on-paper .g-label, .gauge.on-paper .g-num small { color: var(--ink-3); }
.gauge.on-paper .g-num { color: var(--ink); }
.gauge.on-paper .g-track { background-image: linear-gradient(rgba(14, 38, 38, .2), rgba(14, 38, 38, .2)); }
.gauge.on-paper .g-track::before { background: repeating-linear-gradient(to bottom, rgba(14, 38, 38, .3) 0 1px, transparent 1px 10%); }

/* 6. 首屏：视频（index / weather）或静帧（download / compliance） */
.hero { position: sticky; top: 0; z-index: 0; height: 100vh; height: 100svh; min-height: 600px; overflow: hidden; background: #081D1F; }
.hero-video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: 50% 62%; opacity: 0; transform: scale(calc(1.06 + var(--hp) * .08)); filter: blur(calc(var(--hp) * 6px)) brightness(calc(1 - var(--hp) * .45)); transition: opacity 1.6s var(--ease); }
.is-in .hero-video { opacity: 1; }
.hero-shade { position: absolute; inset: 0; background: linear-gradient(to bottom, rgba(6, 22, 24, .55) 0, rgba(6, 22, 24, 0) 160px), linear-gradient(to top, rgba(6, 22, 24, .9) 0%, rgba(6, 22, 24, .45) 38%, rgba(6, 22, 24, 0) 64%); }
.hero-inner { position: absolute; left: 0; right: 0; bottom: 15vh; opacity: calc(1 - var(--hp) * 1.6); transform: translateY(calc(var(--hp) * -80px)); }
.hero-kicker { display: flex; align-items: center; gap: 12px; font-size: 14px; letter-spacing: .14em; color: var(--cream-2); }
.hero-kicker::before { content: ""; width: 28px; height: 1px; background: var(--float-hi); }
.hero h1 { font-size: clamp(60px, 7vw, 112px); line-height: 1.02; margin-top: 22px; }
.hero h1 .ln { display: block; overflow: hidden; padding-bottom: .06em; }
.hero h1 .ln > span { display: block; transform: translateY(110%); transition: transform 1.4s var(--ease); }
.hero h1 .ln:nth-child(2) > span { transition-delay: .14s; }
.is-in .hero h1 .ln > span { transform: none; }
.hero h1 em { font-style: normal; color: var(--float-hi); }
.hero-sub { max-width: 30em; margin-top: 26px; font-size: 18px; color: var(--cream-2); }
.hero-cta { display: flex; gap: 14px; align-items: center; margin-top: 32px; flex-wrap: wrap; }
.fade { opacity: 0; transform: translateY(16px); transition: opacity 1s var(--ease), transform 1s var(--ease); }
.is-in .fade { opacity: 1; transform: none; }
.is-in .fade.d1 { transition-delay: .45s; } .is-in .fade.d2 { transition-delay: .6s; } .is-in .fade.d3 { transition-delay: .75s; } .is-in .fade.d4 { transition-delay: 1s; }

.qr-wrap { position: relative; }
.qr-pop { position: absolute; left: 0; bottom: calc(100% + 14px); width: 176px; padding: 12px 12px 8px; border-radius: 16px; background: var(--paper); color: var(--ink-2); font-size: 12px; text-align: center; opacity: 0; transform: translateY(8px); pointer-events: none; transition: opacity .25s, transform .35s var(--ease); box-shadow: 0 24px 48px -20px rgba(0, 0, 0, .6); }
.qr-pop img { width: 152px; height: 152px; }
.qr-wrap:hover .qr-pop, .qr-wrap:focus-within .qr-pop { opacity: 1; transform: none; }

.post-chip { position: absolute; right: max(24px, calc((100% - 1200px) / 2)); bottom: 15vh; display: flex; gap: 14px; align-items: center; width: 320px; padding: 10px 16px 10px 10px; border-radius: 18px; background: rgba(7, 27, 29, .55); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); box-shadow: inset 0 0 0 1px var(--rule); transition: transform .4s var(--ease); }
.is-in .post-chip.fade { opacity: calc(1 - var(--hp) * 2); }
.post-chip:hover, .is-in .post-chip.fade:hover { transform: translateY(-4px); }
.post-chip img { width: 64px; height: 64px; border-radius: 12px; object-fit: cover; }
.post-chip small { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--cream-2); }
.post-chip small i { width: 6px; height: 6px; border-radius: 50%; background: var(--float-hi); }
.post-chip b { display: block; font-size: 15px; font-weight: 600; line-height: 1.45; margin-top: 2px; }

.cue { position: absolute; left: 50%; bottom: 28px; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: 10px; font-size: 12px; letter-spacing: .3em; color: var(--cream-2); opacity: calc(1 - var(--hp) * 3); }
.cue span { width: 1px; height: 48px; background: linear-gradient(var(--cream), transparent); transform-origin: top; animation: cue 2.2s var(--ease) infinite; }
@keyframes cue { 0% { transform: scaleY(0); } 55% { transform: scaleY(1); opacity: 1; } 100% { transform: scaleY(1); opacity: 0; } }

/* 静帧首屏：不吸顶、不播视频，用封面图当背景 */
.hero--still { position: relative; height: auto; min-height: 0; padding: calc(var(--nav-h) + 96px) 0 150px; background: #081D1F var(--hero-img, none) 50% 62% / cover no-repeat; }
.hero--still .hero-inner { position: relative; bottom: auto; opacity: 1; transform: none; }
.hero--still .hero-shade { background: linear-gradient(100deg, rgba(6, 22, 24, .84) 0%, rgba(6, 22, 24, .55) 55%, rgba(6, 22, 24, .3) 100%); }
.hero--still h1 { font-size: clamp(48px, 5.6vw, 88px); }

/* 7. 入水 */
.dive { background: linear-gradient(180deg, var(--water-2) 0, var(--water-1) 380px, var(--water-0) 100%); padding: 180px 0 140px; }
.waterline, .shoreline { position: absolute; left: 0; right: 0; top: -96px; height: 98px; overflow: hidden; pointer-events: none; }
.waterline svg, .shoreline svg { position: absolute; bottom: 0; left: 0; width: 2880px; height: 98px; }
.waterline .w1 { fill: var(--water-2); animation: tide 11s linear infinite; }
.waterline .w2 { fill: rgba(21, 68, 71, .45); animation: tide 17s linear infinite reverse; bottom: 14px; }
.waterline--flat .w1 { fill: var(--water-0); }
.waterline--flat .w2 { fill: rgba(10, 36, 38, .5); }
.shoreline svg { fill: var(--paper); animation: tide 14s linear infinite; }
@keyframes tide { to { transform: translateX(-1440px); } }
.rays { position: absolute; inset: 0 0 auto 0; height: 720px; pointer-events: none; background: repeating-linear-gradient(104deg, rgba(239, 235, 221, .05) 0 2px, transparent 2px 70px, rgba(239, 235, 221, .03) 70px 110px, transparent 110px 170px); -webkit-mask: linear-gradient(to bottom, #000, transparent); mask: linear-gradient(to bottom, #000, transparent); animation: rays 18s ease-in-out infinite alternate; }
@keyframes rays { to { background-position: 220px 0; } }
.bubbles i { position: absolute; bottom: 0; width: 8px; height: 8px; border-radius: 50%; box-shadow: inset 0 0 0 1px rgba(239, 235, 221, .4); animation: rise linear infinite; opacity: 0; }
.bubbles i:nth-child(1) { left: 12%; animation-duration: 9s; }
.bubbles i:nth-child(2) { left: 31%; width: 5px; height: 5px; animation-duration: 12s; animation-delay: 2s; }
.bubbles i:nth-child(3) { left: 58%; animation-duration: 10s; animation-delay: 4s; }
.bubbles i:nth-child(4) { left: 77%; width: 6px; height: 6px; animation-duration: 14s; animation-delay: 1s; }
.bubbles i:nth-child(5) { left: 90%; width: 4px; height: 4px; animation-duration: 11s; animation-delay: 6s; }
@keyframes rise { 0% { transform: translateY(0); opacity: 0; } 10% { opacity: 1; } 100% { transform: translateY(-700px) translateX(20px); opacity: 0; } }
.statement { position: relative; font-size: clamp(34px, 4.6vw, 68px); line-height: 1.3; max-width: 15em; text-wrap: balance; }
.statement .ch { opacity: .18; transition: opacity .3s; }
.statement .ch.on { opacity: 1; }
.statement em { font-style: normal; color: var(--float-hi); white-space: nowrap; }
/* 下载后你能得到（入水段核心信息） */
.gains-kicker { position: relative; font-size: 13px; letter-spacing: .16em; color: var(--float-hi); margin-bottom: 20px; }
.gains { position: relative; margin-top: 64px; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--rule); }
.gains li { padding: 28px 24px 8px 0; }
.gains li + li { padding-left: 24px; border-left: 1px solid var(--rule); }
.gains b { font-family: var(--disp); font-weight: 400; font-size: 16px; color: var(--float-hi); letter-spacing: .04em; }
.gains h3 { font-family: var(--disp); font-weight: 400; font-size: 27px; line-height: 1.25; margin-top: 10px; text-wrap: balance; }
.gains p { margin-top: 10px; color: var(--cream-2); font-size: 15px; text-wrap: pretty; }
.dive-note { position: relative; margin-top: 40px; display: flex; gap: 28px; flex-wrap: wrap; font-size: 14px; color: var(--muted); }
.dive-note b { color: var(--cream); font-weight: 600; margin-right: 6px; }

/* 8. 滚动叙事：左边文字一步步过，右边吸顶的手机/面板跟着换屏 */
.story { background: var(--water-0); padding: 40px 0 80px; }
.story-grid { display: grid; grid-template-columns: minmax(0, 1fr) 440px; gap: 64px; }
.step { min-height: 92vh; display: flex; flex-direction: column; justify-content: center; max-width: 470px; opacity: .28; transition: opacity .6s var(--ease); }
.step.on { opacity: 1; }
.step-depth { display: flex; align-items: center; gap: 12px; font-size: 13px; letter-spacing: .16em; color: var(--float-hi); }
.step-depth::after { content: ""; width: 40px; height: 1px; background: currentColor; opacity: .6; }
.step h2 { font-size: clamp(40px, 4.4vw, 64px); line-height: 1.1; margin-top: 18px; }
.step p { margin-top: 20px; font-size: 18px; color: var(--cream-2); }
.step ul { margin-top: 24px; display: grid; gap: 10px; }
.step li { display: flex; gap: 12px; align-items: baseline; color: var(--cream-2); }
.step li::before { content: ""; width: 12px; height: 1px; background: var(--float-hi); transform: translateY(-5px); flex-shrink: 0; }
.step li a { color: var(--cream); box-shadow: inset 0 -1px 0 var(--float-hi); }
.step-shot { display: none; }

.stage { position: sticky; top: max(88px, calc(50vh - 330px)); height: 660px; display: flex; align-items: center; justify-content: center; }
.stage-num { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); font-family: var(--disp); font-size: 340px; line-height: 1; color: transparent; -webkit-text-stroke: 1.5px rgba(239, 235, 221, .13); white-space: nowrap; pointer-events: none; }
.phone { position: relative; width: 300px; padding: 9px; border-radius: 48px; background: #050F10; box-shadow: 0 0 0 1px rgba(239, 235, 221, .16), 0 60px 120px -40px rgba(0, 0, 0, .8); }
.screens { position: relative; border-radius: 39px; overflow: hidden; aspect-ratio: 720 / 1564; background: #fff; }
.screens img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0; transform: scale(1.04); transition: opacity .7s var(--ease), transform 1s var(--ease); }
.screens img.on { opacity: 1; transform: none; }
/* 应用市场宣传图：自带标题和手机框，不再套手机壳 */
.store-card.screens { width: 300px; border-radius: 28px; background: #0E1A2B; box-shadow: 0 0 0 1px rgba(239, 235, 221, .16), 0 60px 120px -40px rgba(0, 0, 0, .8); }
.app-shots { margin-top: 18px; display: flex; gap: 12px; overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: 6px; }
.app-shots img { width: 132px; flex-shrink: 0; border-radius: 14px; box-shadow: 0 0 0 1px var(--rule-ink); scroll-snap-align: start; }

/* 9. 渔获 */
.catches { background: linear-gradient(180deg, var(--water-0), var(--deep)); padding: 120px 0 140px; overflow: hidden; }
.catches-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; }
.catches-head h2, .sec-title { font-size: clamp(40px, 5vw, 72px); line-height: 1.08; }
.catches-head p, .sec-lede { margin-top: 12px; color: var(--cream-2); font-size: 17px; max-width: 34em; }
.more { display: inline-flex; align-items: center; gap: 6px; height: 44px; color: var(--float-hi); font-weight: 600; white-space: nowrap; }
.more:hover { color: var(--cream); }
.marquee { margin-top: 56px; -webkit-mask: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); mask: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); }
.track { display: flex; gap: 20px; width: max-content; animation: drift 48s linear infinite; }
.marquee:hover .track, .marquee:focus-within .track { animation-play-state: paused; }
@keyframes drift { to { transform: translateX(calc(-50% - 10px)); } }
.catch { position: relative; width: 300px; height: 380px; border-radius: 20px; overflow: hidden; flex-shrink: 0; }
.catch:nth-child(even) { height: 340px; margin-top: 40px; }
.catch img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.2s var(--ease); }
.catch:hover img { transform: scale(1.06); }
.catch figcaption { position: absolute; inset: auto 0 0 0; padding: 48px 18px 16px; background: linear-gradient(to top, rgba(5, 15, 16, .88), rgba(5, 15, 16, 0)); font-size: 13px; color: var(--cream-2); line-height: 1.5; }
.catch figcaption b { display: block; font-size: 16px; color: var(--cream); font-weight: 600; }
.depth-mark { display: block; }

/* 10. 更多功能（清单） */
.more-sec { background: linear-gradient(180deg, var(--water-0), var(--deep)); padding: 120px 0; }
.more-list { margin-top: 48px; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--rule); }
.more-list > * { padding: 28px 24px 8px 0; }
.more-list > * + * { padding-left: 24px; border-left: 1px solid var(--rule); }
.more-list h3 { font-size: 20px; font-weight: 600; display: flex; align-items: center; gap: 8px; }
.more-list p { margin-top: 8px; color: var(--cream-2); font-size: 15px; }
.more-list a:hover h3 { color: var(--float-hi); }

/* 11. 钓友说 / 常见问题（深色段） */
.voices { background: linear-gradient(180deg, var(--deep), var(--water-1)); padding: 120px 0 220px; }
.voices-grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 32px 24px; }
.voices-head { grid-column: 1 / 6; font-size: 13px; letter-spacing: .16em; color: var(--float-hi); align-self: start; }
.voice { display: flex; flex-direction: column; gap: 18px; }
.voice blockquote { text-wrap: pretty; }
.voice footer { display: flex; gap: 12px; align-items: center; font-size: 14px; color: var(--muted); }
.voice footer b { color: var(--cream); font-weight: 600; }
.voice .stars { color: var(--float-hi); letter-spacing: 3px; font-size: 12px; }
.v1 { grid-column: 1 / 9; }
.v1 blockquote { font-size: clamp(32px, 3.8vw, 54px); line-height: 1.3; }
.v2 { grid-column: 7 / 13; margin-top: 24px; }
.v3 { grid-column: 2 / 8; }
.v2 blockquote, .v3 blockquote { font-size: 20px; line-height: 1.8; color: var(--cream); }

.faq { margin-top: 40px; max-width: 820px; border-top: 1px solid var(--rule); }
.faq details { border-bottom: 1px solid var(--rule); }
.faq summary { list-style: none; cursor: pointer; padding: 22px 0; font-size: 19px; font-weight: 600; display: flex; justify-content: space-between; gap: 16px; align-items: baseline; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-family: var(--disp); font-size: 28px; line-height: 1; color: var(--float-hi); flex-shrink: 0; transition: transform .3s var(--ease); }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { padding: 0 0 24px; color: var(--cream-2); max-width: 44em; }
.paper .faq { border-top-color: var(--rule-ink); }
.paper .faq details { border-bottom-color: var(--rule-ink); }
.paper .faq details p { color: var(--ink-2); }
.paper .faq summary::after { color: var(--float); }

/* 12. 上岸：下载 + 关于（纸色段） */
.shore, .paper { background: var(--paper); color: var(--ink); }
.shore { padding: 120px 0 96px; }
.shore-grid { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 64px; align-items: end; }
.shore-kicker { font-size: 13px; letter-spacing: .16em; color: var(--float); }
.shore h2 { font-size: clamp(56px, 7.6vw, 120px); line-height: 1.02; margin-top: 18px; }
.shore h2 em { font-style: normal; color: var(--float); }
.shore .lede { margin-top: 24px; font-size: 18px; color: var(--ink-2); max-width: 30em; }
.shore .hero-cta { margin-top: 36px; }
.facts-line { margin-top: 28px; display: flex; flex-wrap: wrap; gap: 8px 24px; font-size: 14px; color: var(--ink-3); }
.facts-line b { color: var(--ink); font-weight: 600; margin-right: 4px; }
.qr-card { width: 220px; padding: 16px 16px 12px; border-radius: 24px; background: #FBF8F1; box-shadow: 0 0 0 1px var(--rule-ink); text-align: center; font-size: 13px; color: var(--ink-3); }
.qr-card img { width: 188px; height: 188px; }
.shore-media { display: flex; gap: 28px; align-items: flex-end; }
.shore-media .phone { width: 220px; border-radius: 38px; padding: 7px; box-shadow: 0 40px 80px -40px rgba(14, 38, 38, .5); }
.shore-media .phone img { border-radius: 31px; }
.shore-media .store-shot { width: 220px; border-radius: 22px; box-shadow: 0 40px 80px -40px rgba(14, 38, 38, .5); }
.sisters { margin-top: 72px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--rule-ink); }
.sister { display: flex; align-items: center; gap: 16px; padding: 22px 4px; }
.sister + .sister { border-left: 1px solid var(--rule-ink); padding-left: 28px; }
.sister img { width: 48px; height: 48px; border-radius: 12px; }
.sister div { flex: 1; }
.sister b { display: block; font-weight: 600; }
.sister span { font-size: 14px; color: var(--ink-3); }
.sister a, .sister .download-btn { height: 44px; display: flex; align-items: center; gap: 4px; color: var(--float); font-weight: 600; font-size: 15px; }
.about-sec { padding-bottom: 96px; }
.about { padding-top: 48px; border-top: 1px solid var(--rule-ink); display: grid; grid-template-columns: minmax(0, 1fr) 400px; gap: 64px; }
.about h2 { font-size: clamp(32px, 3.4vw, 48px); line-height: 1.15; }
.about p { margin-top: 16px; color: var(--ink-2); max-width: 36em; }
.about p a { color: var(--ink); box-shadow: inset 0 -1px 0 var(--float); }
.about-apps { margin-top: 24px; max-width: 36em; border-top: 1px solid var(--rule-ink); }
.about-apps li { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; gap: 4px 16px; padding: 12px 0; border-bottom: 1px solid var(--rule-ink); }
.about-apps a { font-weight: 600; color: var(--ink); transition: color .2s; }
.about-apps a:hover { color: var(--float); }
.about-apps span { font-size: 14px; color: var(--ink-3); }
.about dl { display: grid; grid-template-columns: 1fr 1fr; gap: 20px 24px; align-content: start; }
.about dt { font-size: 13px; color: var(--ink-3); }
.about dd { font-family: var(--disp); font-size: 23px; line-height: 1.2; color: var(--ink); white-space: nowrap; }
.about dd a { font-family: var(--sans); font-size: 16px; }

/* 13. 下载中心：应用列表 + 安装说明 */
.apps { margin-top: 8px; border-top: 1px solid var(--rule-ink); }
.app-row { display: grid; grid-template-columns: 88px minmax(0, 1fr) auto 132px; gap: 32px; align-items: start; padding: 36px 0; border-bottom: 1px solid var(--rule-ink); }
.app-row .actions { padding-top: 4px; }
.app-row > img { width: 88px; height: 88px; border-radius: 22px; box-shadow: 0 0 0 1px var(--rule-ink); }
.app-row h2 { font-size: clamp(30px, 3vw, 40px); line-height: 1.15; }
.app-row h2 small { font-family: var(--sans); font-size: 13px; font-weight: 600; letter-spacing: .1em; color: var(--float); margin-left: 10px; vertical-align: middle; }
.app-row p { margin-top: 8px; color: var(--ink-2); max-width: 34em; }
.app-row .meta { margin-top: 10px; display: flex; gap: 18px; flex-wrap: wrap; font-size: 14px; color: var(--ink-3); }
.app-row .meta a { color: var(--ink); box-shadow: inset 0 -1px 0 var(--float); }
.app-row .qr { text-align: center; font-size: 12px; color: var(--ink-3); }
.app-row .qr img { width: 120px; height: 120px; margin: 0 auto 4px; border-radius: 8px; background: #fff; padding: 6px; box-shadow: 0 0 0 1px var(--rule-ink); }
.guide { margin-top: 96px; }
.guide h2 { font-size: clamp(32px, 3.4vw, 48px); line-height: 1.15; }
.guide-grid { margin-top: 32px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--rule-ink); }
.guide-grid > div { padding: 28px 28px 8px 0; }
.guide-grid > div + div { padding-left: 28px; border-left: 1px solid var(--rule-ink); }
.guide-grid h3 { font-size: 19px; font-weight: 600; display: flex; align-items: center; gap: 10px; }
.guide-grid h3 svg { color: var(--float); }
.guide-grid p { margin-top: 10px; color: var(--ink-2); font-size: 15px; }
.guide-help { margin-top: 32px; font-size: 15px; color: var(--ink-3); }
.guide-help a { color: var(--ink); box-shadow: inset 0 -1px 0 var(--float); }

/* 14. Footer */
.footer { background: var(--paper-2); color: var(--ink-2); padding: 48px 0 40px; font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; }
.footer .logo { color: var(--ink); }
.footer .logo-desc { margin-top: 12px; }
.footer h4 { font-size: 14px; color: var(--ink); margin-bottom: 8px; }
.footer li a { display: inline-block; padding: 4px 0; }
.footer li a:hover { color: var(--float); }
.footer-bottom { margin-top: 36px; padding-top: 18px; border-top: 1px solid var(--rule-ink); display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 13px; color: var(--ink-3); }
.footer-bottom a:hover { color: var(--ink); }

/* 15. 手机吸底下载条 */
.dock { display: none; }

/* 16. 下载二维码弹窗（download-handler.js 动态插入）+ contactModal 兜底 */
.qrcode-modal { position: fixed; inset: 0; z-index: 9999; display: none; }
.qrcode-modal.active { display: flex; align-items: center; justify-content: center; }
.qrcode-overlay { position: absolute; inset: 0; background: rgba(4, 12, 13, .7); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); }
.qrcode-content { position: relative; width: min(380px, 90%); padding: 32px 28px 24px; border-radius: 28px; background: var(--paper); color: var(--ink); text-align: center; box-shadow: 0 40px 80px -30px rgba(0, 0, 0, .7); animation: pop .5s var(--ease); }
@keyframes pop { from { opacity: 0; transform: translateY(16px) scale(.98); } }
.qrcode-close { position: absolute; top: 10px; right: 12px; width: 44px; height: 44px; font-size: 28px; line-height: 1; color: var(--ink-3); }
.qrcode-close:hover { color: var(--ink); }
.qrcode-app-icon { display: flex; justify-content: center; margin-bottom: 12px; }
.qrcode-app-icon img { width: 56px; height: 56px; border-radius: 14px; }
.qrcode-title { font-family: var(--disp); font-weight: 400; font-size: 28px; line-height: 1.2; margin-bottom: 16px; }
.qrcode-image-container { display: inline-block; padding: 10px; background: #fff; border-radius: 16px; box-shadow: 0 0 0 1px var(--rule-ink); margin-bottom: 12px; }
.qrcode-image-container img { width: 220px; height: 220px; }
.qrcode-desc { color: var(--ink-2); font-size: 14px; }
.qrcode-app-info { margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--rule-ink); font-weight: 600; }
.qrcode-tip { margin-top: 8px; font-size: 13px; color: var(--ink-3); }
.qrcode-tip strong { color: var(--ink); font-weight: 600; }
.modal { display: none; position: fixed; inset: 0; z-index: 1000; background: rgba(4, 12, 13, .6); align-items: center; justify-content: center; }
.modal-content { position: relative; width: min(400px, 90%); padding: 32px; border-radius: 24px; background: var(--paper); color: var(--ink); }
.modal-close { position: absolute; top: 12px; right: 16px; font-size: 24px; color: var(--ink-3); }

/* 17. 响应式 */
@media (max-width: 1100px) {
  .story-grid { grid-template-columns: minmax(0, 1fr) 360px; gap: 40px; }
  .phone, .store-card.screens { width: 260px; } .stage-num { font-size: 260px; }
  .voices-grid > * { grid-column: 1 / -1 !important; }
  .more-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .more-list > :nth-child(3) { padding-left: 0; border-left: 0; }
  .more-list > :nth-child(n+3) { border-top: 1px solid var(--rule); }
  .shore-media .phone, .shore-media .store-shot { display: none; }
  .gains { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .gains li:nth-child(3) { padding-left: 0; border-left: 0; }
  .gains li:nth-child(n+3) { border-top: 1px solid var(--rule); }
}
@media (max-width: 900px) {
  .gauge { display: none; }
  .story-grid { grid-template-columns: 1fr; }
  .stage { display: none; }
  .step { min-height: 0; opacity: 1; padding: 56px 0; max-width: none; }
  .step-shot { display: block; margin-top: 32px; width: 260px; padding: 8px; border-radius: 42px; background: #050F10; box-shadow: 0 0 0 1px rgba(239, 235, 221, .16); }
  .step-shot img { border-radius: 34px; }
  .step-shot--store { width: 260px; padding: 0; border-radius: 24px; overflow: hidden; background: none; }
  .step-shot--store img { border-radius: 0; }
  .shore-grid { grid-template-columns: 1fr; }
  .qr-card, .shore-media { display: none; }
  .about { grid-template-columns: 1fr; gap: 32px; }
  .app-row { grid-template-columns: 64px minmax(0, 1fr); gap: 16px 20px; }
  .app-row > img { width: 64px; height: 64px; border-radius: 16px; }
  .app-row .actions { grid-column: 2; }
  .app-row .qr { display: none; }
  .guide-grid { grid-template-columns: 1fr; }
  .guide-grid > div + div { padding-left: 0; border-left: 0; border-top: 1px solid var(--rule-ink); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  :root { --nav-h: 60px; }
  .nav-links, .navbar .nav-cta, .cue { display: none; }
  .nav-toggle { display: flex; }
  /* 手机：字放上面，浮漂露在中间，按钮压底 */
  .hero-shade { background: linear-gradient(to bottom, rgba(6, 22, 24, .82) 0, rgba(6, 22, 24, .35) 42%, rgba(6, 22, 24, 0) 58%), linear-gradient(to top, rgba(6, 22, 24, .85) 0, rgba(6, 22, 24, 0) 28%); }
  .hero-video { filter: brightness(calc(1 - var(--hp) * .45)); }
  .hero-inner { top: 92px; bottom: 84px; }
  .hero-inner .wrap { height: 100%; display: flex; flex-direction: column; }
  .hero-inner .hero-cta { margin-top: auto; }
  .hero h1 { font-size: clamp(44px, 12.8vw, 60px); margin-top: 14px; }
  .hero-sub { font-size: 16px; margin-top: 18px; }
  .hero-cta .btn { flex: 1; }
  .hero .qr-wrap, .post-chip { display: none; }
  .hero--still { padding: calc(var(--nav-h) + 56px) 0 120px; }
  .hero--still .hero-shade { background: rgba(6, 22, 24, .66); }
  .hero--still .hero-inner { top: auto; bottom: auto; }
  .hero--still .hero-inner .wrap { height: auto; }
  .hero--still .hero-inner .hero-cta { margin-top: 28px; }
  .hero--still h1 { font-size: clamp(40px, 11vw, 52px); }
  .dive { padding: 140px 0 88px; }
  .statement { font-size: 32px; }
  .gains { grid-template-columns: 1fr; margin-top: 40px; }
  .gains li + li { padding-left: 0; border-left: 0; border-top: 1px solid var(--rule); }
  .gains li { padding: 22px 0 6px; }
  .gains h3 { font-size: 24px; }
  .catches, .more-sec { padding: 88px 0 96px; }
  .catches-head { flex-direction: column; align-items: flex-start; gap: 8px; }
  .marquee { margin-top: 36px; }
  .catch { width: 220px; height: 280px; } .catch:nth-child(even) { height: 250px; margin-top: 30px; }
  .more-list { grid-template-columns: 1fr; }
  .more-list > * + * { padding-left: 0; border-left: 0; border-top: 1px solid var(--rule); }
  .voices { padding: 88px 0 170px; }
  .v2 blockquote, .v3 blockquote { font-size: 17px; }
  .faq summary { font-size: 17px; }
  .shore { padding: 88px 0 72px; }
  .sisters { grid-template-columns: 1fr; margin-top: 48px; }
  .sister + .sister { border-left: 0; border-top: 1px solid var(--rule-ink); padding-left: 4px; }
  .about-sec { padding-bottom: 72px; }
  .app-row .actions .btn { width: 100%; }
  .footer-bottom { flex-direction: column; }
  .dock { display: flex; position: fixed; left: 12px; right: 12px; bottom: calc(12px + env(safe-area-inset-bottom)); z-index: 90; align-items: center; gap: 12px; padding: 8px 8px 8px 12px; border-radius: 20px; background: rgba(7, 27, 29, .88); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); box-shadow: inset 0 0 0 1px var(--rule), 0 20px 40px -16px rgba(0, 0, 0, .6); transform: translateY(140%); transition: transform .5s var(--ease); }
  .dock.show { transform: none; }
  .dock img { width: 40px; height: 40px; border-radius: 10px; }
  .dock div { flex: 1; font-size: 12px; color: var(--cream-2); line-height: 1.4; }
  .dock b { display: block; color: var(--cream); font-size: 15px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .hero-video { display: none; }
  .hero { background: #081D1F var(--hero-img, none) 50% 62% / cover no-repeat; }
  .hero h1 .ln > span, .fade { transform: none; opacity: 1; }
  .statement .ch { opacity: 1; }
  .marquee { overflow-x: auto; }
}