:root{--cyan:#69e9ff;--ice:#dffbff;--navy:#041c2e;--deep:#020d17;--glass:rgba(255,255,255,.12)}*{box-sizing:border-box}html,body{width:100%;height:100%;margin:0;overflow:hidden}body{font-family:Inter,Pretendard,"Noto Sans KR",system-ui,sans-serif;background:var(--deep);color:#fff}button,a{font:inherit;color:inherit}button{border:0}a{text-decoration:none}.ocean-photo{position:fixed;inset:-4%;z-index:0;background:url('./assets/ocean-real-v2.png') center 54%/cover no-repeat;filter:saturate(1.08) contrast(1.06) brightness(.82);animation:ocean-breathe 14s ease-in-out infinite alternate;will-change:transform}.ocean-photo:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(1,10,18,.56) 0%,rgba(1,10,18,.22) 45%,rgba(1,10,18,.08) 76%),linear-gradient(180deg,rgba(1,9,17,.2),transparent 38%,rgba(0,9,18,.22))}#wave-canvas{position:fixed;inset:0;width:100%;height:100%;z-index:1}.light{position:fixed;z-index:1;border-radius:50%;filter:blur(85px);pointer-events:none;mix-blend-mode:screen}.light--one{width:48vw;height:48vw;left:-12vw;top:-18vw;background:rgba(32,166,210,.15)}.light--two{width:35vw;height:35vw;right:-10vw;top:15vh;background:rgba(52,112,212,.1)}.grain{position:fixed;inset:0;z-index:10;pointer-events:none;opacity:.055;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.6'/%3E%3C/svg%3E")}
header{position:fixed;inset:0 0 auto;z-index:5;height:82px;padding:0 clamp(22px,4vw,64px);display:grid;grid-template-columns:1fr auto 1fr;align-items:center;border-bottom:1px solid rgba(255,255,255,.16);backdrop-filter:blur(7px)}.brand{display:flex;gap:12px;align-items:center;font-size:.92rem;letter-spacing:.2em}.brand-mark{width:35px;height:24px;position:relative}.brand-mark i{position:absolute;left:0;width:31px;height:10px;border:1.5px solid var(--cyan);border-radius:50%;transform:rotate(-8deg)}.brand-mark i:first-child{top:1px}.brand-mark i:last-child{bottom:1px;left:4px}.weather{display:flex;align-items:center;gap:14px;font-size:.67rem;font-weight:700;letter-spacing:.18em;color:rgba(255,255,255,.66)}.weather i{width:4px;height:4px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan)}.mode-button{justify-self:end;display:flex;align-items:center;gap:12px;padding:9px 12px 9px 16px;border:1px solid rgba(255,255,255,.24);border-radius:999px;background:rgba(0,0,0,.1);cursor:pointer;transition:.25s}.mode-button:hover{background:rgba(255,255,255,.12);transform:translateY(-2px)}.mode-button span{font-size:.58rem;letter-spacing:.15em;color:rgba(255,255,255,.55)}.mode-button strong{font-size:.72rem;letter-spacing:.12em}.mode-button i{display:grid;place-items:center;width:25px;height:25px;background:var(--cyan);color:var(--navy);border-radius:50%;font-style:normal}
main{position:relative;z-index:2;height:100%;pointer-events:none}.hero{position:absolute;left:clamp(22px,7.5vw,120px);top:50%;transform:translateY(-49%);max-width:850px;pointer-events:auto}.eyebrow{margin:0 0 22px;font-size:.7rem;font-weight:800;letter-spacing:.24em;color:var(--cyan)}h1{font-size:clamp(5rem,13vw,12.5rem);line-height:.72;letter-spacing:-.085em;margin:0;text-shadow:0 18px 60px rgba(0,0,0,.25)}h1 span{font-weight:300;color:rgba(255,255,255,.92)}h1 em{font-style:normal;font-weight:800;color:transparent;-webkit-text-stroke:1.6px rgba(187,245,255,.86)}.lead{font-size:clamp(.95rem,1.25vw,1.12rem);line-height:1.75;color:rgba(255,255,255,.69);margin:42px 0 0 8px}.actions{display:flex;align-items:center;gap:30px;margin:35px 0 0 8px}.play{background:none;display:flex;align-items:center;gap:13px;cursor:pointer;padding:0}.play-ring{width:50px;height:50px;border:1px solid rgba(255,255,255,.34);border-radius:50%;display:grid;place-items:center;position:relative}.play-ring:after{content:"";position:absolute;inset:-7px;border:1px solid rgba(105,233,255,.18);border-radius:50%;transition:.3s}.play:hover .play-ring:after{inset:-13px;opacity:0}.play-ring i{width:0;height:0;border-top:5px solid transparent;border-bottom:5px solid transparent;border-left:8px solid var(--cyan);margin-left:3px}.play>span:last-child{font-size:.77rem;font-weight:700}.actions>p{padding-left:28px;border-left:1px solid rgba(255,255,255,.2);font-size:.65rem;line-height:1.6;color:rgba(255,255,255,.48);margin:0}.actions>p span{color:var(--cyan);font-weight:800;letter-spacing:.12em}.index{position:absolute;left:clamp(22px,4vw,64px);top:50%;transform:translateY(-50%);display:flex;flex-direction:column;align-items:center;gap:9px;font-size:.58rem;color:rgba(255,255,255,.5)}.index i{height:90px;width:1px;background:linear-gradient(var(--cyan) 32%,rgba(255,255,255,.2) 32%)}.wave-data{position:absolute;right:clamp(22px,5vw,80px);bottom:14vh;display:flex;gap:34px;padding:22px 26px;background:rgba(3,20,33,.34);border:1px solid rgba(255,255,255,.15);backdrop-filter:blur(12px);pointer-events:auto}.wave-data div{min-width:70px}.wave-data span{display:block;font-size:.56rem;letter-spacing:.17em;color:rgba(255,255,255,.45);margin-bottom:8px}.wave-data strong{font-size:1.35rem;font-weight:500}.wave-data small{font-size:.52em;color:var(--cyan);margin-left:3px}
footer{position:fixed;z-index:4;inset:auto 0 0;height:64px;padding:0 clamp(22px,4vw,64px);display:flex;align-items:center;justify-content:space-between;border-top:1px solid rgba(255,255,255,.15);font-size:.56rem;letter-spacing:.17em;color:rgba(255,255,255,.45);pointer-events:none}.scroll{display:flex;align-items:center;gap:14px}.scroll i{width:40px;height:1px;background:linear-gradient(90deg,var(--cyan),transparent)}body.pulse .play-ring{animation:pulse .75s ease}body.pulse .light--one{animation:flash .9s ease}
@keyframes ocean-breathe{0%{transform:scale(1.025) translate3d(-.25%,0,0)}100%{transform:scale(1.065) translate3d(.4%,-.35%,0)}}@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(105,233,255,.6)}100%{box-shadow:0 0 0 35px rgba(105,233,255,0)}}@keyframes flash{50%{opacity:1;transform:scale(1.12)}}
@media(max-width:900px){header{grid-template-columns:1fr 1fr}.weather{display:none}.hero{left:62px;top:48%}.index{left:22px}.wave-data{right:22px;bottom:90px;gap:18px;padding:16px 18px}.wave-data div{min-width:56px}.wave-data strong{font-size:1.05rem}}
@media(max-width:600px){header{height:68px;padding:0 18px}.brand{font-size:.78rem}.brand-mark{transform:scale(.85)}.mode-button span{display:none}.hero{left:22px;right:22px;top:43%;transform:translateY(-50%)}.eyebrow{font-size:.6rem;margin-bottom:16px}h1{font-size:clamp(5.2rem,25vw,8rem);line-height:.76}.lead{font-size:.9rem;margin-top:32px}.lead br{display:none}.actions{margin-top:28px}.actions>p{display:none}.index{display:none}.wave-data{left:22px;right:22px;bottom:74px;justify-content:space-between}.wave-data div{min-width:0}.wave-data strong{font-size:1rem}footer{height:52px;padding:0 18px}footer>p:first-of-type{display:none}}
@media(max-height:680px) and (min-width:601px){.hero{top:48%}h1{font-size:6.8rem}.lead{margin-top:26px}.actions{margin-top:24px}.wave-data{bottom:78px}}
@media(prefers-reduced-motion:reduce){.play-ring,.light,.ocean-photo{animation:none!important}}