:root{--sea-deep:#020a13;--sea-navy:#041827;--sea-cyan:#52e8ff;--sea-aqua:#32ffd0;--sea-gold:#ffd56a;--sea-panel:rgba(5,27,43,.76)}
.sea-page{background:var(--sea-deep);color:#fff;overflow-x:hidden}.sea-header{background:rgba(3,14,24,.9);border-bottom:1px solid rgba(127,227,255,.12)}.sea-header .brand,.sea-header .main-nav a{color:#eafbff}.sea-header .menu-toggle span{background:#eafbff}.sea-header .main-nav a.active,.sea-header .main-nav a:hover{color:#fff}.sea-intro{position:relative;overflow:hidden;padding:82px 0 72px;background:radial-gradient(circle at 72% 35%,rgba(23,162,199,.18),transparent 32%),linear-gradient(180deg,#031321 0%,#031a29 42%,#02101b 100%)}.sea-intro:after{content:"";position:absolute;inset:auto 0 0;height:150px;background:linear-gradient(180deg,transparent,#020a13);pointer-events:none}.sea-glow{position:absolute;border-radius:50%;filter:blur(70px);opacity:.22}.glow-a{width:420px;height:420px;background:#00c9ff;right:-80px;top:40px}.glow-b{width:310px;height:310px;background:#00ffbc;left:-180px;bottom:-80px}.sea-intro-grid{display:grid;grid-template-columns:.92fr 1.08fr;gap:70px;align-items:center;position:relative;z-index:2}.sea-copy{padding:34px 0}.sea-kicker{display:block;font-size:11px;letter-spacing:2.7px;color:#79dcef;font-weight:800;margin-bottom:16px}.sea-copy h1{font-size:clamp(68px,8vw,114px);letter-spacing:-6px;line-height:.82;margin:0 0 26px;font-style:italic;text-shadow:0 8px 36px rgba(0,210,255,.18)}.sea-copy h1 span{display:block;color:transparent;-webkit-text-stroke:1px rgba(117,236,255,.78);text-shadow:none}.sea-copy p{max-width:650px;color:#a9c8d4;font-size:18px}.sea-feature-row{display:flex;flex-wrap:wrap;gap:10px;margin:28px 0 32px}.sea-feature-row span{border:1px solid rgba(119,222,244,.18);background:rgba(11,38,55,.56);padding:9px 12px;border-radius:999px;color:#c8edf5;font-size:11px;font-weight:700}.sea-scroll{display:inline-flex;align-items:center;gap:10px;color:#64e5ff;font-weight:800}.sea-scroll b{display:grid;place-items:center;width:34px;height:34px;border-radius:50%;border:1px solid rgba(100,229,255,.35)}
.sea-poster{position:relative;min-height:560px;border-radius:34px;overflow:hidden;border:1px solid rgba(124,231,255,.16);box-shadow:0 40px 100px rgba(0,0,0,.48),inset 0 0 80px rgba(54,226,255,.05);background:linear-gradient(180deg,#0b4060 0%,#07314b 23%,#052338 47%,#031522 77%,#020b12 100%)}.poster-water{position:absolute;inset:0;background:radial-gradient(ellipse at top,rgba(134,239,255,.22),transparent 45%),linear-gradient(110deg,transparent 20%,rgba(126,231,255,.08) 44%,transparent 61%)}.poster-moon{position:absolute;width:190px;height:190px;border-radius:50%;left:50%;top:-105px;transform:translateX(-50%);background:#c9f6ff;box-shadow:0 0 80px rgba(107,225,255,.5)}.poster-rays{position:absolute;top:0;left:19%;width:62%;height:62%;background:conic-gradient(from 161deg at 50% 0,transparent 0 13deg,rgba(145,238,255,.11) 15deg 24deg,transparent 26deg 41deg,rgba(145,238,255,.08) 43deg 55deg,transparent 57deg 360deg);filter:blur(4px)}.poster-diver{position:absolute;left:47%;top:37%;width:130px;height:170px;transform:rotate(-14deg);filter:drop-shadow(0 14px 16px rgba(0,0,0,.5))}.poster-diver .head{position:absolute;left:40px;top:8px;width:46px;height:46px;border-radius:50%;background:#142638;border:4px solid #81f4ff;box-shadow:inset 0 0 0 7px #233a4c}.poster-diver .body{position:absolute;left:42px;top:49px;width:54px;height:84px;border-radius:26px 26px 16px 16px;background:linear-gradient(90deg,#0a1119,#263e4f)}.poster-diver .tank{position:absolute;left:27px;top:45px;width:25px;height:86px;border-radius:11px;background:linear-gradient(90deg,#7a8c96,#d8e8ed 50%,#657580)}.poster-diver .arm{position:absolute;left:82px;top:65px;width:70px;height:15px;background:#142638;border-radius:10px;transform:rotate(5deg);transform-origin:left center}.poster-diver .spear{position:absolute;left:130px;top:69px;width:140px;height:3px;background:#a3f4ff;box-shadow:0 0 8px #47dfff}.poster-diver .spear:after{content:"";position:absolute;right:-8px;top:-4px;border-left:12px solid #d5faff;border-top:5px solid transparent;border-bottom:5px solid transparent}.poster-diver .fin{position:absolute;bottom:3px;width:54px;height:15px;border-radius:3px 90% 90% 3px;background:#2cd5e8}.fin-a{left:35px;transform:rotate(23deg)}.fin-b{left:68px;bottom:18px!important;transform:rotate(40deg)}.poster-fish{position:absolute;color:#5cf0ff;text-shadow:0 0 16px rgba(92,240,255,.8);font-size:58px;transform:scaleX(1.45)}.fish-a{right:12%;top:28%;font-size:42px}.fish-b{left:13%;top:55%;font-size:31px;opacity:.7}.fish-c{right:15%;bottom:22%;font-size:23px;opacity:.55}.poster-coral{position:absolute;bottom:-18px;width:120px;height:140px;filter:drop-shadow(0 0 12px rgba(55,255,194,.15))}.poster-coral:before,.poster-coral:after{content:"";position:absolute;bottom:0;background:#0a776e;border-radius:60% 60% 20% 20%}.poster-coral:before{width:24px;height:120px;left:45px;box-shadow:-28px 40px 0 -3px #075d5c,32px 25px 0 -4px #0a776e}.poster-coral:after{width:19px;height:83px;left:16px;transform:rotate(-20deg)}.coral-a{left:3%}.coral-b{right:1%;transform:scale(.8) rotate(12deg)}.poster-title{position:absolute;left:30px;bottom:26px;z-index:4}.poster-title small{display:block;color:#71dcea;letter-spacing:2.8px;font-size:10px}.poster-title strong{font-family:"Space Grotesk";font-size:28px;letter-spacing:-1px}.sea-game-section{position:relative;padding:80px 0 100px;background:radial-gradient(circle at 50% 0,rgba(16,134,163,.12),transparent 42%),#020a13}.game-shell{border:1px solid rgba(99,223,248,.18);border-radius:30px;background:linear-gradient(180deg,#071927,#04111c);box-shadow:0 34px 120px rgba(0,0,0,.5);overflow:hidden}.game-topbar{min-height:82px;display:flex;align-items:center;justify-content:space-between;padding:14px 20px;border-bottom:1px solid rgba(116,225,245,.12);background:rgba(2,14,23,.78)}.game-brand{display:flex;align-items:center;gap:12px}.game-brand small,.game-brand strong{display:block}.game-brand small{font-size:9px;letter-spacing:2px;color:#6ca6b5}.game-brand strong{font-family:"Space Grotesk";letter-spacing:1px}.sonar-dot{width:34px;height:34px;border:1px solid #4fe9ff;border-radius:50%;position:relative;box-shadow:0 0 18px rgba(79,233,255,.18)}.sonar-dot:before,.sonar-dot:after{content:"";position:absolute;border:1px solid rgba(79,233,255,.5);border-radius:50%;inset:6px}.sonar-dot:after{inset:13px;background:#5affd7;border:0;box-shadow:0 0 12px #5affd7}.game-stats{display:flex;gap:30px}.game-stats div{min-width:70px;text-align:right}.game-stats small,.game-stats strong{display:block}.game-stats small{font-size:9px;letter-spacing:1.5px;color:#6d9bab}.game-stats strong{font-family:"Space Grotesk";font-size:20px;color:#eafcff}.game-stage-wrap{position:relative;aspect-ratio:16/9;min-height:420px;background:#03101a;overflow:hidden;touch-action:none}.game-stage-wrap canvas{display:block;width:100%;height:100%;position:absolute;inset:0}.hud-left{position:absolute;left:16px;top:16px;z-index:5}.meter-card{width:185px;padding:11px 12px;border-radius:12px;background:rgba(3,19,31,.72);border:1px solid rgba(113,226,244,.14);backdrop-filter:blur(8px)}.meter-head{display:flex;justify-content:space-between;font-size:9px;letter-spacing:1px;color:#9ed3dd}.meter-head b{color:#d7fcff}.meter-track{height:6px;background:rgba(255,255,255,.08);border-radius:999px;overflow:hidden;margin-top:7px}.meter-track i{display:block;height:100%;width:100%;border-radius:inherit;background:linear-gradient(90deg,#18dba2,#57edff);box-shadow:0 0 12px rgba(87,237,255,.5);transition:width .2s}.hud-right{position:absolute;right:16px;top:16px;z-index:5;text-align:right;padding:9px 12px;border-radius:12px;background:rgba(3,19,31,.6);border:1px solid rgba(113,226,244,.12)}.hud-right span,.hud-right strong{display:block}.mini-label{font-size:8px;letter-spacing:1.5px;color:#76a9b5}.hud-right strong{font-family:"Space Grotesk"}.crosshair{position:absolute;width:28px;height:28px;border:1px solid rgba(164,247,255,.72);border-radius:50%;transform:translate(-50%,-50%);pointer-events:none;z-index:4;opacity:.7}.crosshair:before,.crosshair:after{content:"";position:absolute;background:#c1fbff}.crosshair:before{width:8px;height:1px;left:9px;top:13px}.crosshair:after{height:8px;width:1px;left:13px;top:9px}.game-overlay{position:absolute;inset:0;display:grid;place-items:center;background:linear-gradient(180deg,rgba(0,8,14,.28),rgba(0,8,14,.82));backdrop-filter:blur(3px);z-index:12;opacity:0;pointer-events:none;transition:.25s}.game-overlay.show{opacity:1;pointer-events:auto}.overlay-card{width:min(520px,calc(100% - 32px));text-align:center;padding:30px 34px;border-radius:24px;background:linear-gradient(180deg,rgba(6,32,48,.92),rgba(3,18,30,.95));border:1px solid rgba(113,231,250,.2);box-shadow:0 30px 70px rgba(0,0,0,.42)}.overlay-icon{font-size:32px}.overlay-card small{display:block;color:#66e1f4;letter-spacing:2px;margin:7px 0}.overlay-card h2{font-size:42px;margin:6px 0 13px}.overlay-card p{color:#a9cbd4;font-size:14px}.overlay-card p strong{color:#fff}.control-hints{display:flex;flex-wrap:wrap;justify-content:center;gap:7px;margin:20px 0}.control-hints span{font-size:9px;padding:7px 9px;border-radius:999px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.06);color:#bdd9df}.dive-btn{border:0;border-radius:13px;padding:13px 25px;color:#03212a;background:linear-gradient(135deg,#56f2ff,#42ffb4);font-weight:900;letter-spacing:.7px;box-shadow:0 12px 32px rgba(64,241,235,.18);cursor:pointer}.dive-btn:hover{transform:translateY(-2px)}.mobile-controls{display:none;position:absolute;left:0;right:0;bottom:14px;z-index:9;pointer-events:none;padding:0 14px;justify-content:space-between;align-items:end}.move-pad{display:grid;grid-template-columns:46px 46px 46px;grid-template-rows:46px 46px 46px;gap:3px;pointer-events:auto}.move-pad button,.fire-btn{border:1px solid rgba(138,235,249,.2);background:rgba(4,27,42,.72);color:#defbff;backdrop-filter:blur(7px);box-shadow:0 7px 20px rgba(0,0,0,.2);touch-action:none}.move-pad button{border-radius:14px;font-size:13px}.move-pad button[data-move="up"]{grid-column:2;grid-row:1}.move-pad button[data-move="left"]{grid-column:1;grid-row:2}.move-pad button[data-move="down"]{grid-column:2;grid-row:2}.move-pad button[data-move="right"]{grid-column:3;grid-row:2}.fire-btn{pointer-events:auto;width:78px;height:78px;border-radius:50%;display:grid;place-items:center;align-content:center}.fire-btn span{font-size:27px;line-height:1;color:#5bf3ff}.fire-btn small{font-size:8px;letter-spacing:1.5px}.game-bottom{min-height:58px;padding:12px 18px;display:flex;justify-content:space-between;align-items:center;gap:20px;color:#71919c;font-size:10px;letter-spacing:.2px}.game-bottom b{color:#5de7f8;margin-right:7px}.sound-toggle{border:1px solid rgba(116,225,245,.14);background:rgba(255,255,255,.03);color:#9cc6cf;border-radius:9px;padding:7px 9px;font-size:9px;white-space:nowrap}.sea-info-section{padding:90px 0;background:linear-gradient(180deg,#020a13,#04101a)}.sea-info-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.sea-info-grid article{padding:26px;border:1px solid rgba(121,223,242,.12);border-radius:18px;background:linear-gradient(180deg,rgba(9,34,50,.58),rgba(4,17,28,.7))}.sea-info-grid article>span{color:#45e6ef;font-family:"Space Grotesk";font-size:12px}.sea-info-grid h3{margin:18px 0 8px;font-size:25px}.sea-info-grid p{margin:0;color:#86aab5;font-size:13px}.sea-footer{border-top:1px solid rgba(91,213,232,.08)}
@media(max-width:980px){.sea-header .main-nav{background:#071827;border-color:rgba(116,225,245,.14)}.sea-intro-grid{grid-template-columns:1fr;gap:32px}.sea-copy{text-align:center;max-width:760px;margin:auto}.sea-copy p{margin-left:auto;margin-right:auto}.sea-feature-row{justify-content:center}.sea-poster{min-height:500px;max-width:720px;width:100%;margin:auto}.sea-info-grid{grid-template-columns:1fr 1fr}.mobile-controls{display:flex}.game-stage-wrap{aspect-ratio:4/3;min-height:520px}.crosshair{display:none}}
@media(max-width:660px){.sea-intro{padding:52px 0}.sea-copy h1{font-size:70px;letter-spacing:-4px}.sea-copy p{font-size:15px}.sea-poster{min-height:420px;border-radius:24px}.poster-diver{left:34%;top:38%;transform:scale(.82) rotate(-14deg)}.poster-title strong{font-size:22px}.game-shell{border-radius:20px;margin-left:-6px;margin-right:-6px}.game-topbar{min-height:70px;padding:10px 11px}.game-brand small{display:none}.game-brand strong{font-size:12px}.sonar-dot{width:27px;height:27px}.game-stats{gap:10px}.game-stats div{min-width:52px}.game-stats small{font-size:7px}.game-stats strong{font-size:15px}.game-stage-wrap{aspect-ratio:auto;height:min(72vh,620px);min-height:500px}.hud-left{left:9px;top:9px}.meter-card{width:150px}.hud-right{right:9px;top:9px}.overlay-card{padding:24px 18px}.overlay-card h2{font-size:34px}.control-hints span{font-size:8px}.mobile-controls{bottom:6px}.move-pad{grid-template-columns:42px 42px 42px;grid-template-rows:42px 42px 42px}.fire-btn{width:70px;height:70px}.game-bottom{font-size:8px}.game-bottom>div{max-width:72%}.sea-info-grid{grid-template-columns:1fr}.sea-info-section{padding:65px 0}.sea-game-section{padding:55px 0 70px}}
@media(max-width:390px){.sea-copy h1{font-size:60px}.sea-feature-row span{font-size:9px}.game-stage-wrap{height:66vh;min-height:460px}.game-stats div:nth-child(2){display:none}.poster-diver{left:28%}}