:root{color-scheme:light;--paper:#fdfcfb;--ink:#101318;--muted:#747980;--line:#e5e6e8;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-size:16px;-webkit-font-smoothing:antialiased}button,a{-webkit-tap-highlight-color:transparent}button{font:inherit}a{color:inherit;text-decoration:none}button{cursor:pointer}button:focus-visible,a:focus-visible{outline:2px solid #3679cb;outline-offset:6px}.skip{position:fixed;top:-80px;left:20px;z-index:20;padding:12px;background:#fff}.skip:focus{top:12px}.site-header{height:80px;margin:0 5.4%;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.wordmark{display:flex;align-items:center;gap:16px;white-space:nowrap}.wordmark strong{font-size:27px;letter-spacing:-1px;font-weight:650}.wordmark span{font-size:22px;font-weight:400;letter-spacing:1px}nav{display:flex;gap:42px}nav button{padding:12px 0;border:0;background:none;color:#242a30;font-size:16px;transition:color .2s}nav button:hover{color:#3473be}.hero{position:relative;min-height:750px;height:calc(100svh - 185px);max-height:1050px;overflow:hidden;isolation:isolate}.hero-copy{position:relative;z-index:2;text-align:center;padding:clamp(95px,13vh,150px) 20px 0;pointer-events:none}.hero-copy button{pointer-events:auto}h1{font-size:clamp(48px,6.35vw,100px);letter-spacing:-.055em;font-weight:750;line-height:1.2;margin:0} .subtitle{font-size:clamp(18px,2vw,28px);line-height:1.65;letter-spacing:.03em;color:#626970;margin:23px 0 0}.download-slot{margin-top:50px}.download-button{min-width:230px;min-height:62px;border-radius:100px;border:0;background:#1c293c;color:#fff;font-size:18px;padding:15px 28px;transition:transform .25s,background .25s,box-shadow .25s}.download-button:not(:disabled):hover{transform:translateY(-3px);background:#275c9d;box-shadow:0 10px 25px #24578e1a}.download-button:disabled{background:#dedfe1;color:#73777e;cursor:not-allowed}.download-slot p{font-size:15px;color:#8a8f96;line-height:1.6;margin:15px auto 0;max-width:550px}.wave-stage{position:absolute;inset:auto -3% 0;height:52%;z-index:1;pointer-events:none}.glass-wave{display:block;width:100%;height:100%;object-fit:cover;object-position:center;mix-blend-mode:multiply;animation:glass-drift 14s ease-in-out infinite;will-change:transform}.hero-copy h1{animation:rise-in 1s cubic-bezier(.16,1,.3,1) both}.subtitle{animation:rise-in 1s .12s cubic-bezier(.16,1,.3,1) both}.download-slot{animation:rise-in 1s .24s cubic-bezier(.16,1,.3,1) both}footer{position:relative;z-index:2;padding:10px 22px 24px;text-align:center;background:var(--paper)}.feature-line{display:flex;align-items:center;justify-content:center;gap:25px;font-size:15px;color:#343a41}.feature-line i{font-style:normal;color:#858b92}.copyright{display:flex;justify-content:center;gap:20px;flex-wrap:wrap;margin:29px 0 0;color:#9a9ea4;font-size:12px;line-height:1.7}.copyright a:hover{color:#4c6077}dialog{width:min(660px,calc(100% - 36px));max-height:85svh;border:1px solid #e5e6e8;border-radius:22px;padding:30px 38px 36px;background:var(--paper);color:var(--ink);box-shadow:0 25px 120px #17253626}dialog[open]{animation:rise-in .35s ease both}dialog::backdrop{background:#13213738;backdrop-filter:blur(8px)}.dialog-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:45px}.dialog-brand{font-size:13px;color:#747d87}.close-dialog{border:1px solid #dddfe3;border-radius:30px;padding:8px 16px;background:none;color:#5c626b}.eyebrow{font-size:10px;letter-spacing:2px;color:#6686ab}dialog h2{font-size:32px;letter-spacing:-1px;margin:16px 0}dialog p{line-height:1.8}.dialog-intro{color:#6e747b;font-size:15px;margin-bottom:26px}.info-row{display:grid;grid-template-columns:100px 1fr;gap:15px;border-top:1px solid var(--line);padding:16px 0}.info-row h3,.guide-list h3{font-size:15px;margin:0;font-weight:600}.info-row p,.guide-list p{font-size:14px;color:#737981;margin:0}.small-note{font-size:12px;color:#899099;margin-top:25px}.guide-list{padding-left:24px}.guide-list li{padding:15px 0 15px 8px;border-bottom:1px solid var(--line)}.guide-list p{margin-top:6px}[hidden]{display:none!important}@keyframes rise-in{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}@keyframes glass-drift{0%,100%{transform:translate3d(-.6%,5px,0) scale(1.02)}50%{transform:translate3d(.6%,-9px,0) scale(1.055)}}@media(min-width:1600px){.hero-copy{padding-top:14vh}}@media(max-width:700px){.site-header{height:72px;margin:0 6%}.wordmark{gap:9px}.wordmark strong{font-size:24px}.wordmark span{font-size:15px;letter-spacing:0}nav{gap:18px}nav button{font-size:12px}.hero{height:calc(100svh - 190px);min-height:600px}.hero-copy{padding-top:86px}h1{font-size:clamp(33px,8.8vw,60px);letter-spacing:-.06em}.subtitle{font-size:16px;letter-spacing:0;margin:19px auto 0;max-width:300px}.download-slot{margin-top:35px}.download-button{min-width:198px;min-height:54px;font-size:16px}.download-slot p{font-size:12px;max-width:300px}.wave-stage{height:43%;left:-45%;right:-45%;bottom:0}.feature-line{font-size:12px;gap:17px}.copyright{font-size:10px;gap:6px;flex-direction:column;margin-top:24px}dialog{padding:23px}.dialog-top{margin-bottom:30px}dialog h2{font-size:26px}.info-row{grid-template-columns:1fr;gap:7px}}@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
/* Keep the full glass sculpture visible, without cropping its lower curve. */
@media(min-width:701px){h1{font-size:clamp(48px,6.35vw,128px)}.wave-stage{height:auto;aspect-ratio:1942/809;bottom:-3%}.glass-wave{object-fit:contain}}
@media(min-width:701px){h1{font-size:clamp(48px,6.9vw,140px);font-weight:800}.wave-stage{bottom:-7%}}

/* Unified SK wordmark: one weight and rhythm across Latin and Chinese. */
.wordmark{gap:0}.wordmark .brand-name{font-size:20px;font-weight:650;letter-spacing:.02em}
@media(max-width:700px){.wordmark .brand-name{font-size:17px;letter-spacing:0}}