/* Hong Kong: shared design system.
   NTTCB's motion and spacing, rebuilt as glass. Dark "night harbour" bands alternate with off-white "plaster" bands.
   Per-section colours come from <html data-section="...">. No inline styles anywhere (CSP), so state lives in classes and custom properties set from JS. */
:root{
  --tint:#ff5a4e; --deep:#081319; --paper:#f2ede3; --tint2:#4fb59f;
  --ease:cubic-bezier(.16,1,.3,1);
  --gutter:16px; --nav-h:60px; --maxw:1200px;
  --f-body:"Bricolage Grotesque","Avenir Next","Segoe UI Variable","Helvetica Neue",sans-serif;
  --f-mono:"Martian Mono","SF Mono","Cascadia Mono",ui-monospace,monospace;
  --f-zh:"LXGW WenKai TC","Kaiti TC","STKaiti","BiauKai","Noto Serif CJK TC",serif;
  /* semantic: always paired with a word or icon, never colour alone */
  --ok:#3ecf8e; --warn:#f5b83d; --bad:#ff6b63; --info:#6fb6ff;
  /* defaults for anything outside a band (heroes, dialogs) */
  --ink:#fff; --ink-2:rgba(255,255,255,.64); --hair:rgba(255,255,255,.16); --btn-bg:var(--tint); --btn-ink:#06100f;
}
@media(min-width:768px){:root{--gutter:40px;--nav-h:68px}}

[data-section=weather]{--tint:#7cc4e4;--deep:#071722;--paper:#e9f0f2;--tint2:#f5b83d}
[data-section=hiking]{--tint:#8cc084;--deep:#0a1510;--paper:#eef0e6;--tint2:#e6c07b}
[data-section=arrivals]{--tint:#f2c230;--deep:#0f1108;--paper:#f3eedd;--tint2:#3fb887}
[data-section=cams]{--tint:#ff9f43;--deep:#140d08;--paper:#f3ebe0;--tint2:#6fb6ff}
[data-section=trips]{--tint:#e0604a;--deep:#091220;--paper:#f2ebe2;--tint2:#4fb59f}
[data-section=savings]{--tint:#5cb89f;--deep:#07161a;--paper:#edf1ee;--tint2:#e0b25a}
[data-section=study]{--tint:#d8b27a;--deep:#120e0a;--paper:#f1e9db;--tint2:#e0604a}

.band-dark{--bg:color-mix(in srgb,var(--deep) 80%,transparent);--ink:#fff;--ink-2:rgba(255,255,255,.64);--hair:rgba(255,255,255,.16);
  --glass:rgba(255,255,255,.065);--glass-2:rgba(255,255,255,.11);--glass-edge:rgba(255,255,255,.15);--glass-hi:rgba(255,255,255,.22);--shadow:0 24px 60px -24px rgba(0,0,0,.7);
  --btn-bg:var(--tint);--btn-ink:#06100f}
.band-light{--bg:var(--paper);--ink:#0f1a1f;--ink-2:rgba(15,26,31,.62);--hair:rgba(15,26,31,.15);
  --glass:rgba(255,255,255,.58);--glass-2:rgba(255,255,255,.82);--glass-edge:rgba(255,255,255,.9);--glass-hi:#fff;--shadow:0 24px 50px -26px rgba(20,30,40,.35);
  --btn-bg:#0f1a1f;--btn-ink:#fff;
  --ok:#0f7a4c;--warn:#8a5a00;--bad:#b4281f;--info:#1c5fa8;
  background-image:radial-gradient(circle at 2px 2px,rgba(15,26,31,.055) 1px,transparent 1.6px),radial-gradient(circle at 6px 7px,rgba(15,26,31,.04) .8px,transparent 1.4px);background-size:9px 9px,13px 13px}
.band{background-color:var(--bg);color:var(--ink);position:relative}

*{box-sizing:border-box;margin:0}
html{background:var(--deep);-webkit-text-size-adjust:100%}
@media(prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}
body{font:400 17px/1.6 var(--f-body);background:var(--deep);color:#fff;min-height:100dvh;overflow-x:clip;-webkit-font-smoothing:antialiased}
/* ambient harbour glow that stays put while glass slides over it */
body::before{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:radial-gradient(60vmax 45vmax at 12% 8%,color-mix(in srgb,var(--tint) 34%,transparent),transparent 62%),radial-gradient(55vmax 40vmax at 92% 78%,color-mix(in srgb,var(--tint2) 26%,transparent),transparent 60%),var(--deep)}
a{color:inherit}
img{max-width:100%}
:focus-visible{outline:2px solid var(--tint);outline-offset:4px}
.band-light :focus-visible{outline-color:var(--ink)}
::selection{background:var(--tint);color:#000}
.skip{position:absolute;left:-999px;top:8px;background:#fff;color:#000;padding:12px 20px;z-index:100}
.skip:focus{left:12px}
[hidden]{display:none!important}

.wrap{width:min(var(--maxw),100% - 2*var(--gutter));margin-inline:auto}
.wrap-narrow{width:min(760px,100% - 2*var(--gutter));margin-inline:auto}
.band-pad{padding:clamp(80px,12vw,160px) 0}
.center{text-align:center}
.display,.h2{font-weight:300;letter-spacing:-.035em;line-height:1.02;text-wrap:balance;font-variation-settings:"opsz" 96}
.display{font-size:clamp(2.6rem,7.4vw,6rem)}
.h2{font-size:clamp(2rem,4.8vw,3.9rem)}
.h3{font-size:clamp(1.3rem,2.4vw,1.8rem);font-weight:300;letter-spacing:-.025em;line-height:1.15}
.lede{font-size:clamp(1rem,1.5vw,1.2rem);color:var(--ink-2);max-width:42ch}
.center .lede{margin-inline:auto}
.zh{font-family:var(--f-zh);font-weight:400;letter-spacing:.04em}
.mono{font-family:var(--f-mono);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.eyebrow{display:inline-block;margin-bottom:18px;font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-2);text-decoration:none}
.eyebrow::before{content:"";display:inline-block;width:.65em;height:.65em;margin-right:.75em;border-radius:50%;background:var(--tint);vertical-align:-.05em;box-shadow:0 0 14px var(--tint)}
.band-light .eyebrow::before{box-shadow:none}
.stack>*+*{margin-top:20px}
.muted{color:var(--ink-2)}

/* glass */
.glass{background:var(--glass);border:1px solid var(--glass-edge);border-radius:22px;box-shadow:inset 0 1px 0 var(--glass-hi),var(--shadow);-webkit-backdrop-filter:blur(22px) saturate(150%);backdrop-filter:blur(22px) saturate(150%)}
.glass-pad{padding:clamp(20px,3vw,32px)}
.glass.lift{transition:transform .7s var(--ease),border-color .5s var(--ease),background .5s var(--ease)}
a.glass.lift:hover,.glass.lift:hover{transform:translateY(-4px);border-color:var(--glass-hi);background:var(--glass-2)}

/* buttons: square, small caps (NTTCB) */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:44px;padding:0 22px;border:0;border-radius:0;background:var(--btn-bg);color:var(--btn-ink);font:600 11px/1 var(--f-body);letter-spacing:.09em;text-transform:uppercase;text-decoration:none;cursor:pointer;transition:opacity .3s var(--ease),background .3s var(--ease),transform .5s var(--ease)}
.btn:hover{opacity:.86}
.btn:disabled{opacity:.45;cursor:default}
.btn .arr,.arr{display:inline-block;transition:transform .5s var(--ease)}
.btn:hover .arr,a:hover>.arr,a:hover .arr{transform:translateX(4px)}
.btn-ghost{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 1px var(--hair)}
.btn-ghost:hover{opacity:1;box-shadow:inset 0 0 0 1px var(--ink)}
.btn-sm{min-height:34px;padding:0 14px}
.icon-btn{width:40px;height:40px;border:0;background:none;color:var(--ink);font-size:1rem;cursor:pointer;opacity:.7;transition:opacity .3s}
.icon-btn:hover{opacity:1}

/* badges: semantic colour + word, never colour alone */
.badge{display:inline-flex;align-items:center;gap:7px;padding:5px 11px;border-radius:99px;font-size:12px;font-weight:600;letter-spacing:.02em;line-height:1;color:var(--c,var(--ink-2));background:color-mix(in srgb,var(--c,var(--ink-2)) 16%,transparent);box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--c,var(--ink-2)) 38%,transparent)}
.badge::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--c,var(--ink-2))}
.badge.ok{--c:var(--ok)}.badge.warn{--c:var(--warn)}.badge.bad{--c:var(--bad)}.badge.info{--c:var(--info)}
.chip{padding:9px 16px;border:0;border-radius:99px;background:transparent;color:var(--ink-2);font:400 .88rem/1 var(--f-body);cursor:pointer;transition:background .4s var(--ease),color .4s var(--ease)}
.chip:hover{color:var(--ink)}
.chip[aria-pressed=true],.chip[aria-selected=true],.chip[aria-current=true]{background:color-mix(in srgb,var(--tint) 30%,transparent);color:var(--ink)}
.chip small{margin-left:6px;opacity:.6;font-family:var(--f-mono);font-size:.75em}
.chips{display:flex;flex-wrap:wrap;gap:6px}

/* form fields */
.field{display:grid;gap:6px;font-size:.8rem;color:var(--ink-2)}
.field select,.field input{min-height:44px;padding:0 14px;border:1px solid var(--hair);border-radius:12px;background:var(--glass);color:var(--ink);font:400 1rem var(--f-body);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}
.field select option{color:#000}

/* nav */
.nav{position:sticky;top:0;z-index:50;height:var(--nav-h);background:color-mix(in srgb,var(--deep) 62%,transparent);border-bottom:1px solid var(--glass-edge);-webkit-backdrop-filter:blur(20px) saturate(160%);backdrop-filter:blur(20px) saturate(160%);color:#fff;--hair:rgba(255,255,255,.16);--ink-2:rgba(255,255,255,.64);--btn-bg:var(--tint);--btn-ink:#06100f}
.nav-in{height:100%;display:grid;grid-template-columns:1fr auto;align-items:center;padding-inline:var(--gutter)}
.wordmark{display:inline-flex;align-items:baseline;gap:10px;font-weight:600;letter-spacing:.16em;font-size:.9rem;text-decoration:none}
.wordmark .zh{font-size:1.15rem;letter-spacing:.06em;color:var(--tint)}
.nav-links{display:none;gap:32px}
.nav-link{display:inline-flex;align-items:center;gap:6px;padding:10px 0;border:0;background:none;color:inherit;font:600 11px/1 var(--f-body);letter-spacing:.09em;text-transform:uppercase;text-decoration:none;cursor:pointer;opacity:.85;transition:opacity .3s}
.nav-link:hover,.nav-link[aria-current=page]{opacity:1}
.nav-link svg{width:9px;height:9px;transition:transform .4s var(--ease)}
.nav-link[aria-expanded=true] svg{transform:rotate(180deg)}
.nav-right{justify-self:end;display:flex;align-items:center;gap:18px}
.nav-cta{min-height:38px}
@media(max-width:599px){.nav-cta{display:none}}
@media(min-width:900px){.nav-in{grid-template-columns:1fr auto 1fr}.nav-links{display:flex}.menu-btn{display:none}}
.panel{position:fixed;left:0;right:0;top:var(--nav-h);z-index:45;background:color-mix(in srgb,var(--deep) 78%,transparent);-webkit-backdrop-filter:blur(26px) saturate(160%);backdrop-filter:blur(26px) saturate(160%);color:#fff;border-bottom:1px solid var(--glass-edge);padding:28px var(--gutter) 40px;--hair:rgba(255,255,255,.16);--ink-2:rgba(255,255,255,.64);opacity:0;visibility:hidden;transform:translateY(-8px);transition:opacity .35s var(--ease),transform .5s var(--ease),visibility 0s .5s}
.panel.is-open{opacity:1;visibility:visible;transform:none;transition-delay:0s}
.panel ul{list-style:none;padding:0;max-width:var(--maxw);margin:0 auto;display:grid;grid-template-columns:repeat(3,1fr);gap:0 32px}
.panel a{display:flex;align-items:center;gap:16px;padding:16px 0;border-top:1px solid var(--hair);text-decoration:none}
.swatch{flex:none;width:56px;height:40px;border-radius:10px;overflow:hidden;position:relative;display:grid;place-items:center;font-family:var(--f-zh);font-size:1.15rem;color:#06100f;background:var(--sw)}
.panel-t{display:block;font-size:1.05rem;line-height:1.25}
.panel-s{display:block;font-size:.8rem;color:var(--ink-2);line-height:1.3;margin-top:2px}
.panel li{opacity:0;transform:translateY(14px)}
.panel.is-open li{opacity:1;transform:none;transition:opacity .7s var(--ease) calc(var(--i)*55ms + 80ms),transform .8s var(--ease) calc(var(--i)*55ms + 80ms)}
[data-sw=weather]{--sw:#7cc4e4}[data-sw=hiking]{--sw:#8cc084}[data-sw=arrivals]{--sw:#f2c230}[data-sw=cams]{--sw:#ff9f43}[data-sw=trips]{--sw:#e0604a}[data-sw=savings]{--sw:#5cb89f}[data-sw=study]{--sw:#d8b27a}[data-sw=home]{--sw:#ff5a4e}
@media(max-width:899px){.panel{bottom:0;overflow-y:auto}.panel ul{grid-template-columns:1fr}.panel a{padding:20px 0}.panel-t{font-size:1.5rem;font-weight:300;letter-spacing:-.02em}}

/* art canvases */
.art{display:block;width:100%;height:100%}
.cover{position:absolute;inset:0;overflow:hidden}
.cover .art{transition:transform 1.4s var(--ease)}
a:hover>.cover .art{transform:scale(1.06)}
.art-drift{animation:drift 26s ease-in-out infinite alternate}
@keyframes drift{from{transform:scale(1.18) translate3d(-2%,-1%,0)}to{transform:scale(1.18) translate3d(2%,2%,0)}}
@keyframes settle{from{transform:scale(1.14)}to{transform:none}}

/* reveal system (NTTCB) */
.js [data-reveal],.js [data-stagger]>*{opacity:0;transform:translateY(28px);transition:opacity 1s var(--ease) calc(var(--i,0)*var(--stg,90ms)),transform 1.1s var(--ease) calc(var(--i,0)*var(--stg,90ms))}
.js [data-reveal].is-in,.js [data-stagger].is-in>*{opacity:1;transform:none}
.js .circles>*{transform:scale(.55)}
.js [data-split]:not(.is-split){visibility:hidden}
.w{display:inline-block;overflow:hidden;vertical-align:top;padding-bottom:.14em;margin-bottom:-.14em}
.js .w>span{display:inline-block;transform:translateY(110%);transition:transform 1.2s var(--ease) calc(var(--i)*70ms + 120ms)}
.js [data-split].is-in .w>span{transform:none}

/* pinned hero: cards zoom as you scroll */
.hero-wrap{height:200vh;height:200svh}
.hero{position:sticky;top:var(--nav-h);height:calc(100vh - var(--nav-h));height:calc(100svh - var(--nav-h));overflow:hidden;isolation:isolate;color:#fff}
.hero-art{position:absolute;inset:0;z-index:-2;overflow:hidden}
.hero::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(rgba(6,14,20,.3),rgba(6,14,20,.68))}
.hero-copy{position:absolute;left:0;right:0;top:10%;display:flex;flex-direction:column;align-items:center;gap:22px;text-align:center;padding-inline:var(--gutter);opacity:calc(1 - var(--p,0)*3);transform:translateY(calc(var(--p,0)*-70px))}
.hero-copy .display{max-width:12em}
.hero-note{font-size:12px;color:rgba(255,255,255,.75)}
.hero-cards{position:absolute;left:0;right:0;bottom:-3vw;display:flex;justify-content:center;align-items:flex-end;gap:2vw;--zoom:1.4}
.hcard{flex:none;position:relative;display:block;width:30vw;aspect-ratio:16/10;overflow:hidden;border-radius:16px;border:1px solid var(--glass-edge);color:#fff;text-decoration:none;background:#0c1a22;transform:translateX(calc(var(--dir,0)*var(--p,0)*44vw));opacity:calc(1 - var(--p,0)*1.6)}
.hcard.is-center{width:42vw;z-index:2;opacity:calc(1 - (var(--p,0) - .86)*7);transform-origin:50% 100%;transform:translateY(calc(var(--p,0)*-3svh)) scale(calc(1 + var(--p,0)*var(--zoom)))}
.hcard-art{position:absolute;inset:0}
.hcard::after{content:"";position:absolute;inset:0;background:linear-gradient(transparent 40%,rgba(0,0,0,.5))}
.mock{position:absolute;z-index:1;top:7%;left:5%;right:5%;display:flex;align-items:center;gap:1.2vw}
.mock i{display:block;height:3px;width:2.6vw;background:rgba(255,255,255,.7);border-radius:2px}
.mock b{display:block;margin-left:auto;height:1.3vw;width:4vw;background:var(--tint);border-radius:99px}
.hcard-title{position:absolute;z-index:1;left:5%;right:5%;bottom:11%;font-size:clamp(1.1rem,3.6vw,3.4rem);font-weight:500;letter-spacing:-.04em;line-height:.95}
.hcard-title .zh{display:block;font-size:.45em;letter-spacing:.1em;opacity:.8;margin-bottom:.3em}
@media(max-width:700px){.hero-cards{--zoom:.6;gap:3vw}.hcard{width:46vw}.hcard.is-center{width:64vw}.mock i{width:5vw}.mock b{width:9vw;height:2.4vw}.hero-copy{top:7%}}

/* stats */
.stats{padding:clamp(80px,12vw,150px) 0}
.stats-line{font-size:.85rem;color:var(--ink-2)}
.stat-row{--stg:220ms;display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(10px,2vw,20px);max-width:1000px;margin:clamp(36px,6vw,64px) auto 0}
.stat{padding:clamp(18px,3vw,32px) 14px;text-align:center}
.stat-n{display:block;font-family:var(--f-mono);font-size:clamp(1.6rem,6.4vw,4rem);font-weight:300;letter-spacing:-.05em;line-height:1;font-variant-numeric:tabular-nums;min-height:1em}
.stat-n small{font-size:.4em;letter-spacing:0;margin-left:.15em;color:var(--ink-2)}
.stat-l{display:block;margin-top:14px;font-size:.72rem;color:var(--ink-2)}
.stat .badge{margin-top:10px}
@media(max-width:560px){.stat-row{grid-template-columns:1fr}}

/* tabs + carousel */
.tabs{display:flex;flex-wrap:wrap;justify-content:center;gap:6px;margin:clamp(28px,4vw,44px) 0}
.car{overflow:hidden;touch-action:pan-y;cursor:grab}
.car-track{position:relative;display:flex;gap:16px}
.car.is-ready .car-track{transition:transform 1s var(--ease)}
.ccard{flex:none;position:relative;display:block;width:min(78vw,760px);aspect-ratio:16/10;overflow:hidden;border-radius:22px;border:1px solid var(--glass-edge);color:#fff;text-decoration:none;background:#0c1a22;opacity:.35;transform:scale(.94);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.ccard.is-active{opacity:1;transform:none}
.ccard::after{content:"";position:absolute;inset:0;background:linear-gradient(transparent 45%,rgba(0,0,0,.6))}
.ccard-body{position:absolute;z-index:1;left:clamp(16px,3vw,28px);right:clamp(16px,3vw,28px);bottom:clamp(14px,2.4vw,24px);display:flex;justify-content:space-between;align-items:flex-end;gap:16px}
.ccard-t{display:block;font-size:clamp(1.3rem,3vw,2.2rem);font-weight:300;letter-spacing:-.03em;line-height:1.05}
.ccard-t .zh{margin-left:.5em;font-size:.6em;opacity:.8}
.ccard-s{display:block;margin-top:6px;font-size:.8rem;opacity:.78}
.car-ctrl{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;margin-top:24px}
.dots{display:flex;justify-content:center}
.dot{width:26px;height:26px;padding:10px;border:0;border-radius:50%;background:var(--ink-2) content-box;opacity:.35;cursor:pointer;transition:opacity .3s}
.dot[aria-current=true]{opacity:1}
.car-btns{display:flex;justify-self:end}
.car-ctrl .pause{justify-self:start}

/* split + section cards */
.split{display:grid;gap:20px;align-items:end}
.split p{color:var(--ink-2);max-width:44ch}
@media(min-width:800px){.split{grid-template-columns:1fr 1fr;gap:64px}}
.pgrid{display:grid;gap:16px;margin-top:clamp(36px,6vw,64px);grid-template-columns:1fr}
@media(min-width:640px){.pgrid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1000px){.pgrid{grid-template-columns:repeat(3,1fr)}}
.pcard{position:relative;isolation:isolate;display:flex;flex-direction:column;justify-content:space-between;aspect-ratio:4/4.2;padding:22px;overflow:hidden;border-radius:22px;border:1px solid var(--glass-edge);color:#fff;text-decoration:none;background:#0c1a22}
.pcard::before{content:"";position:absolute;inset:0;z-index:0;background:linear-gradient(rgba(0,0,0,.05),rgba(0,0,0,.58))}
.pcard>*{position:relative;z-index:1}
.pcard-art{position:absolute!important;inset:0;z-index:-1!important}
.pcard-art .art{transition:transform 1.4s var(--ease)}
.pcard:hover .pcard-art .art{transform:scale(1.06)}
.pcard-eyebrow{display:block;font-size:11px;letter-spacing:.1em;text-transform:uppercase;opacity:.8;margin-bottom:10px}
.pcard-title{display:block;font-size:clamp(1.4rem,2.4vw,1.9rem);font-weight:300;letter-spacing:-.03em;line-height:1.1}
.pcard-title .zh{display:block;margin-top:6px;font-size:.7em;opacity:.85}
.pcard-foot{display:flex;justify-content:space-between;align-items:center;font-size:.82rem}

/* statement: pinned; background paper to deep, words brighten */
.stmt-wrap{height:320vh;height:320svh;background:color-mix(in srgb,var(--deep) calc(clamp(0,var(--p,0)*6,1)*100%),var(--paper))}
.stmt{position:sticky;top:var(--nav-h);height:calc(100vh - var(--nav-h));height:calc(100svh - var(--nav-h));display:grid;place-items:center;padding-inline:var(--gutter)}
.stmt-text{max-width:19em;text-align:center;font-size:clamp(1.8rem,4.8vw,4.2rem);font-weight:300;letter-spacing:-.035em;line-height:1.1}
.sw{color:color-mix(in srgb,#fff calc(clamp(0,(var(--p,0) - var(--w,0))*7,1)*100%),#8b8f8e)}

/* circles */
.cast{padding:clamp(60px,9vw,120px) 0 clamp(80px,12vw,160px)}
.circles{display:inline-flex;text-decoration:none;margin-bottom:28px}
.circle{position:relative;width:76px;height:76px;margin-left:-18px;border-radius:50%;overflow:hidden;border:3px solid var(--deep);background:var(--sw);display:grid;place-items:center;font-family:var(--f-zh);font-size:1.6rem;color:#06100f}
.circle:first-child{margin-left:0}

/* accordion */
.fold{border-top:1px solid var(--hair)}
.fold-list>.fold:last-child{border-bottom:1px solid var(--hair)}
.fold summary{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:26px 0;list-style:none;cursor:pointer;font-size:clamp(1.4rem,3vw,2.3rem);font-weight:300;letter-spacing:-.025em;line-height:1.15}
.fold summary::-webkit-details-marker{display:none}
.fold summary::after{content:"+";font-size:2rem;font-weight:200;line-height:1;transition:transform .5s var(--ease)}
.fold[open] summary::after{transform:rotate(45deg)}
.fold-count{margin-left:auto;font-size:.8rem;letter-spacing:0;color:var(--ink-2)}
.fold-body{padding-bottom:28px}
.fold{interpolate-size:allow-keywords}
.fold::details-content{block-size:0;overflow:hidden;opacity:0;transition:block-size .5s var(--ease),opacity .5s var(--ease),content-visibility .5s allow-discrete}
.fold[open]::details-content{block-size:auto;opacity:1}
.fold-more{display:inline-block;margin-top:14px;font-size:11px;letter-spacing:.09em;text-transform:uppercase;text-decoration:none}
.fold.sm summary{font-size:1.1rem;padding:18px 0}

/* rows: hairline lists */
.rows{list-style:none;padding:0}
.rows li{position:relative}
.rows li::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--hair);transform-origin:left}
.js .lines>li::before{transform:scaleX(0);transition:transform 1.3s var(--ease) calc(var(--i,0)*70ms + 150ms)}
.js .lines.is-in>li::before{transform:scaleX(1)}
.rows:last-child li:last-child{border-bottom:1px solid var(--hair)}
.row{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:22px 0;color:var(--ink);text-decoration:none}
.row-title{font-size:clamp(1.15rem,2.4vw,1.8rem);font-weight:300;letter-spacing:-.02em;line-height:1.2;transition:transform .6s var(--ease)}
.row:hover .row-title{transform:translateX(10px)}
.row-meta{display:flex;align-items:center;gap:18px;color:var(--ink-2);font-size:.85rem;white-space:nowrap}

/* CTA with particle sphere */
.cta{position:relative;min-height:90vh;min-height:90svh;display:grid;place-items:center;text-align:center;overflow:hidden;padding:80px var(--gutter)}
.sphere{position:absolute;left:50%;top:50%;width:min(96vw,760px);height:min(96vw,760px);transform:translate(-50%,-50%)}
.cta-in{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center;gap:20px}
.cta-serif{font-family:var(--f-zh);font-size:clamp(1.2rem,2vw,1.6rem);color:var(--ink-2)}
.cta-note{font-size:.8rem;color:var(--ink-2)}

/* section hero (subhero) */
.subhero{position:relative;display:flex;align-items:flex-end;min-height:min(64svh,600px);overflow:hidden;isolation:isolate;padding:0 0 clamp(36px,6vw,80px);background:transparent}
.subhero-art{position:absolute;inset:-8% 0;z-index:-1;transform:translateY(calc(var(--p,0)*14%))}
.subhero-art .art{animation:settle 1.8s var(--ease) both}
.subhero::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(rgba(6,14,20,.25),rgba(6,14,20,.72))}
.subhero .display{max-width:14em;view-transition-name:sect}
.subhero .display .zh-inline{font-family:var(--f-zh);font-size:.5em;letter-spacing:.1em;color:var(--tint);margin-left:.4em}
.subhero .lede{margin-top:20px;color:rgba(255,255,255,.78)}
.sect-bar{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:28px}

/* shared states: loading, empty, error, stale */
.state{display:grid;grid-template-columns:auto 1fr;gap:6px 16px;align-items:start;padding:clamp(18px,3vw,26px);border-radius:18px;border:1px solid var(--glass-edge);background:var(--glass);color:var(--ink);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px)}
.state::before{content:"";grid-row:1/span 3;width:34px;height:34px;border-radius:50%;box-sizing:border-box;border:2px solid var(--c,var(--ink-2));background:color-mix(in srgb,var(--c,var(--ink-2)) 14%,transparent);display:grid;place-items:center;font:700 16px/30px var(--f-body);text-align:center;color:var(--c,var(--ink-2))}
.state-title{font-weight:600;font-size:1rem;line-height:1.3}
.state-body{grid-column:2;color:var(--ink-2);font-size:.92rem;max-width:60ch}
.state .btn{grid-column:2;justify-self:start;margin-top:8px}
.state-empty{--c:var(--ink-2)}.state-empty::before{content:"–"}
.state-error{--c:var(--bad)}.state-error::before{content:"!"}
.state-stale{--c:var(--warn)}.state-stale::before{content:"⏱";font-size:15px}
.state-ok{--c:var(--ok)}.state-ok::before{content:"✓"}
.state-loading{--c:var(--tint)}
.state-loading::before{border-color:color-mix(in srgb,var(--tint) 25%,transparent);border-top-color:var(--tint);background:none;animation:spin 1s linear infinite}
.state.compact{padding:12px 16px;border-radius:14px}
.state.compact::before{width:24px;height:24px;font-size:13px;line-height:20px;grid-row:1/span 2}
@keyframes spin{to{transform:rotate(1turn)}}
.skeleton{position:relative;overflow:hidden;border-radius:10px;background:color-mix(in srgb,var(--ink) 9%,transparent);min-height:1em}
.skeleton::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,transparent 30%,color-mix(in srgb,var(--ink) 14%,transparent) 50%,transparent 70%);background-size:200% 100%;animation:shimmer 1.4s linear infinite}
@keyframes shimmer{from{background-position:200% 0}to{background-position:-200% 0}}
.fade-swap{animation:fadeswap .6s var(--ease)}
@keyframes fadeswap{from{opacity:.25;transform:translateY(4px)}to{opacity:1;transform:none}}
.offline{position:fixed;left:50%;bottom:18px;z-index:90;transform:translate(-50%,140%);max-width:min(92vw,520px);padding:12px 18px;border-radius:99px;background:color-mix(in srgb,var(--deep) 80%,transparent);border:1px solid var(--warn);color:#fff;font-size:.88rem;box-shadow:0 10px 40px rgba(0,0,0,.5);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);transition:transform .6s var(--ease)}
.offline.is-on{transform:translate(-50%,0)}
.offline::before{content:"● ";color:var(--warn)}

/* dialogs */
dialog{border:1px solid var(--glass-edge);border-radius:22px;padding:0;color:#fff;background:color-mix(in srgb,var(--deep) 78%,transparent);-webkit-backdrop-filter:blur(26px) saturate(150%);backdrop-filter:blur(26px) saturate(150%);max-width:min(94vw,900px);max-height:92dvh;overflow:auto;--ink:#fff;--ink-2:rgba(255,255,255,.64);--hair:rgba(255,255,255,.16);--glass:rgba(255,255,255,.07);--glass-edge:rgba(255,255,255,.16)}
dialog::backdrop{background:rgba(3,8,12,.66);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}
dialog[open]{animation:pop .5s var(--ease)}
@keyframes pop{from{opacity:0;transform:translateY(16px) scale(.98)}to{opacity:1;transform:none}}

/* prose */
.prose{max-width:680px;margin-inline:auto;font-size:1.1rem;line-height:1.7}
.prose>*+*{margin-top:1.1em}
.prose a{text-decoration-color:var(--tint);text-decoration-thickness:2px;text-underline-offset:3px}

/* footer */
.foot{border-top:1px solid var(--hair);padding:clamp(56px,8vw,96px) 0 32px;font-size:.8rem}
.foot-grid{display:grid;gap:36px;grid-template-columns:1fr 1fr}
.foot-brand{grid-column:1/-1}
.foot-brand p{margin-top:14px;color:var(--ink-2);max-width:34ch}
.foot h4{margin-bottom:12px;font-size:.72rem;font-weight:500;letter-spacing:.06em;color:var(--ink-2)}
.foot ul{list-style:none;padding:0}
.foot li a{display:block;padding:5px 0;text-decoration:none;opacity:.82;transition:opacity .3s,transform .4s var(--ease)}
.foot li a:hover{opacity:1;transform:translateX(3px)}
.foot-legal{margin-top:clamp(48px,8vw,96px);color:var(--ink-2);max-width:70ch}
@media(min-width:800px){.foot-grid{grid-template-columns:1.6fr repeat(2,1fr)}.foot-brand{grid-column:auto}}

/* cross-page transition: soft glass cross-fade, title morphs via view-transition-name */
@view-transition{navigation:auto}
::view-transition-old(root){animation:vt-out .35s var(--ease) both}
::view-transition-new(root){animation:vt-in .6s var(--ease) both}
@keyframes vt-out{to{opacity:0;transform:translateY(-6px)}}
@keyframes vt-in{from{opacity:0;transform:translateY(10px)}}
::view-transition-group(sect){animation-duration:.7s;animation-timing-function:var(--ease)}

@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition-duration:.001ms!important;transition-delay:0s!important}
  .js [data-reveal],.js [data-stagger]>*,.js .circles>*{opacity:1;transform:none}
  .js .w>span{transform:none}
  .js .lines>li::before{transform:none}
  .hero-wrap,.stmt-wrap{height:auto}
  .hero,.stmt{position:relative;top:0}
  .stmt-wrap{--p:1}
  .state-loading::before{border-top-color:var(--tint)}
  @view-transition{navigation:none}
}
@media print{.nav,.panel,.offline,body::before{display:none}body{background:#fff;color:#000}}

/* skeleton stacks */
.skel-stack{display:grid;gap:12px}
.skel-h1{height:14px}.skel-h2{height:22px}.skel-h3{height:56px;border-radius:16px}

/* home-specific spacing (no inline styles allowed) */
.gap-top{margin-top:clamp(80px,12vw,160px)}
.band-fold{padding-bottom:clamp(80px,12vw,160px)}
.fold-p{max-width:60ch;margin-bottom:6px}
.stat-extra{display:block;min-height:1.6em}
.stat-note{display:block;margin-top:8px;font-size:.78rem;color:var(--ink-2)}
.stat .btn{margin-top:10px}
.skeleton.skel-h3{display:block;width:60%;margin:0 auto}
.field{min-width:0}
.field select,.field input{width:100%;max-width:100%;min-width:0;text-overflow:ellipsis}
@media(max-width:480px){.circle{width:54px;height:54px;margin-left:-12px;font-size:1.2rem}}

/* 404 */
.lost{min-height:calc(100svh - var(--nav-h));display:grid;place-items:center;padding:80px 0}
.lost-zh{font-size:clamp(4rem,16vw,9rem);line-height:1;color:var(--tint);text-shadow:0 0 50px color-mix(in srgb,var(--tint) 50%,transparent);margin-bottom:.2em}
.lost-links{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:28px}