:root{--bg:#f4f8f8;--card:#fff;--ink:#0d2b33;--mute:#56707a;--line:#d6e3e5;--deep:#0b3a46;--deep2:#0f5566;--sand:#e3a95a;--on:#e8f3f4}
@media (prefers-color-scheme:dark){:root{--bg:#071c22;--card:#0c2b34;--ink:#e8f3f4;--mute:#9db8bf;--line:#1b4450}}
*{box-sizing:border-box}html{height:100%;scroll-behavior:smooth}
body{margin:0;min-height:100vh;display:flex;flex-direction:column;background:var(--bg);color:var(--ink);font:16px/1.8 "PingFang TC","Microsoft JhengHei","Noto Sans TC",system-ui,sans-serif}
h1,h2,h3{font-family:"Songti TC","Noto Serif TC",Georgia,serif;line-height:1.35;margin:0}a{color:inherit;text-decoration:none}
a:focus-visible{outline:2px solid var(--sand);outline-offset:3px}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
header{position:sticky;top:0;z-index:9;background:var(--deep);color:var(--on)}
.bar{display:flex;align-items:center;justify-content:space-between;gap:16px;height:62px}
.logo{font:700 20px "Songti TC",serif;letter-spacing:.1em}.logo small{margin-left:8px;font:11px sans-serif;color:var(--sand);letter-spacing:.16em}
nav{display:flex;align-items:center;gap:20px;font-size:14px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}nav a{white-space:nowrap;opacity:.8;padding:4px 0}nav::-webkit-scrollbar{display:none}
nav a:hover,nav a.on{opacity:1;color:var(--sand);border-bottom:2px solid var(--sand)}
.hero{background:linear-gradient(120deg,var(--deep),var(--deep2));color:var(--on);padding:84px 0}
.page-hero{padding:52px 0}.hero h1{font-size:clamp(30px,5.5vw,50px);letter-spacing:.06em;margin-bottom:14px}
.hero p{max-width:34em;margin:0 0 26px;color:#ffffff}
.hero.page-hero p{color:rgba(255,255,255,.75)}
.hero .pg-slogan{max-width:none;margin:-6px 0 0;color:rgba(255,255,255,.75);font-size:16px;letter-spacing:.22em}
.btn{display:inline-block;padding:11px 24px;border:1px solid var(--sand);font-weight:600;border-radius:2px;margin-right:10px}
.btn.fill{background:var(--sand);color:var(--deep)}.btn:not(.fill){color:var(--sand)}
section{padding:60px 0}.head{margin-bottom:28px}.head h2{font-size:clamp(23px,3.2vw,32px)}.head p{color:var(--mute);margin:8px 0 0}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{background:var(--card);border:1px solid var(--line);border-top:3px solid var(--sand);padding:26px 24px;border-radius:14px;overflow:hidden}
.card small{color:var(--sand);font-size:13px}.card h3{font-size:20px;margin:6px 0 8px}.card p,.txt p{margin:0;color:var(--mute)}
.desk{background:var(--card);border:1px solid var(--line);border-radius:16px;overflow:hidden}
.row{display:grid;grid-template-columns:210px 1fr;gap:16px;padding:22px 26px;border-bottom:1px solid var(--line)}.row:last-child{border:0}
.row em{display:block;font-style:normal;color:var(--sand);font-size:13px}.row p{margin:0;color:var(--mute)}
.strip{background:var(--deep);color:var(--on);padding:38px 0;text-align:center}
.strip .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.strip b{display:block;color:var(--sand);font:700 19px "Songti TC",serif}.strip span{font-size:13px;color:rgba(255,255,255,.75)}
.txt p{margin-bottom:14px;max-width:42em}
.about-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:30px;align-items:start;margin-top:8px}
.about-fig{margin:0;border-radius:18px;overflow:hidden;border:1px solid var(--line);box-shadow:0 16px 34px -18px rgba(0,0,0,.45)}
.about-fig img{display:block;width:100%;height:100%;object-fit:cover}
@media(max-width:860px){.about-grid{grid-template-columns:1fr;gap:22px}.about-fig{order:-1}}
.about-fig{position:relative}.about-fig::after{content:"";position:absolute;inset:0;border:1px solid rgba(247,147,26,.35);border-radius:18px;pointer-events:none}
.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;margin-top:6px}
@media(max-width:760px){.grid2{grid-template-columns:1fr}}
form{display:grid;gap:14px;max-width:520px}input,textarea{width:100%;padding:11px 12px;border:1px solid var(--line);background:var(--card);color:var(--ink);font:inherit}
button{cursor:pointer;border:0;font:inherit}
.todo{color:var(--sand)}
footer{background:var(--deep);color:#ffffff;padding:44px 0 26px;font-size:14px;margin-top:auto}
.fc{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:30px}footer h3{color:#ffffff;font-size:16px;margin-bottom:10px}
footer .fc p{color:rgba(255,255,255,.6);line-height:1.7;max-width:360px;margin:0}
footer a{display:block;margin:5px 0;color:rgba(255,255,255,.75)}footer a:hover{color:var(--sand)}.fc .fc-add{display:block;margin:5px 0;color:rgba(255,255,255,.75);line-height:1.6;overflow-wrap:break-word}
footer .fc a.cl b,footer .fc .fc-add b{color:rgba(255,255,255,.85);font-weight:600;margin-right:2px;letter-spacing:.02em}footer a.cl:hover b{color:rgba(255,255,255,.85)}
footer .fc div:nth-child(3) h3{color:#ffffff}.copy{border-top:1px solid rgba(255,255,255,.2);margin-top:28px;padding-top:16px;font-size:13px;color:rgba(255,255,255,.5);text-align:center}
@media(max-width:800px){.grid3,.fc,.row{grid-template-columns:1fr}.strip .wrap{grid-template-columns:1fr 1fr}.hero{padding:56px 0}}
.tk{background:#061a20;color:#e8f3f4;padding:48px 0}.tk .top{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:14px;margin-bottom:24px}
.tk h2{font-size:26px}.tk .live{font-size:12px;color:var(--sand);letter-spacing:.06em}
.seg{display:inline-flex;gap:2px;align-items:center;padding:4px;background:linear-gradient(180deg,#20242e,#15171e);border:1px solid rgba(255,255,255,.08);border-radius:99px}.seg button{padding:7px 18px;background:transparent;color:rgba(255,255,255,.8);font-size:13px;border:none;border-radius:99px;cursor:pointer;transition:background .25s,color .25s}.seg button:hover{background:rgba(255,255,255,.08)}.seg button.on{background:var(--sand);color:var(--deep);box-shadow:0 2px 8px rgba(247,147,26,.35)}.seg button.on:hover{background:var(--sand)}
.tg{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.tc{border:1px solid #1b4450;padding:20px;background:linear-gradient(180deg,#0e2e39,#0a232b);border-radius:20px;overflow:hidden;box-shadow:0 12px 26px -14px rgba(0,0,0,.75),inset 0 1px 0 rgba(255,255,255,.06)}
.tc span{font-size:13px;color:#ffffff}.tc b{display:block;font:700 28px/1.3 ui-monospace,Menlo,monospace;margin-top:8px}.tc i{font-style:normal;font-size:12px;color:var(--sand);margin-left:6px}
.tn{margin-top:18px;font-size:12px;color:rgba(255,255,255,.75)}
.map{display:grid;grid-template-columns:1.1fr 1fr;gap:36px;align-items:center;background:var(--deep);color:var(--on);padding:44px;border-radius:6px}
.map h3{font-size:26px;margin-bottom:12px}.map p{color:rgba(255,255,255,.8);margin:0 0 16px}.map li{margin:10px 0;list-style:none;padding-left:18px;position:relative;color:rgba(255,255,255,.8)}.map li:before{content:"";position:absolute;left:0;top:.7em;width:8px;height:8px;border-radius:50%;background:var(--sand)}.map ul{padding:0;margin:0}
.map svg{width:100%;max-width:340px;justify-self:center}
.map svg .grid{transform-box:view-box;transform-origin:100px 100px;animation:globespin 16s linear infinite}
.map svg .node{filter:drop-shadow(0 0 6px rgba(227,169,90,.9))}
.map svg .ring{animation:ringglow 4s ease-in-out infinite}
@keyframes globespin{to{transform:rotate(360deg)}}
@keyframes ringglow{0%,100%{opacity:.62}50%{opacity:1}}
.two{display:grid;grid-template-columns:1fr 1fr;gap:36px;margin-top:44px}.two div{border-left:4px solid var(--sand);padding:6px 0 6px 24px}.two h3{font-size:20px;margin-bottom:8px}.two p{margin:0;color:var(--mute)}
@media(max-width:800px){.tg,.map,.two{grid-template-columns:1fr 1fr}.map,.two{grid-template-columns:1fr}.map{padding:28px}}
.hero.big{padding:120px 0;position:relative;overflow:hidden;background:#06202a url("../img/hero-bg.jpg") center/cover no-repeat}.hero.big:before{content:"";position:absolute;inset:0;background:linear-gradient(105deg,rgba(6,26,34,.70) 0%,rgba(6,32,42,.32) 45%,rgba(6,32,42,.06) 100%)}.hero.big .wrap{position:relative}.hero.big h1,.hero.big p{text-shadow:0 2px 22px rgba(6,26,34,.6)}
.hero.big h1{font-size:clamp(38px,7vw,64px);line-height:1.25}.hero.big h1 span{color:var(--sand)}
.tch{margin-top:10px;font-size:13px;font-weight:700;color:#ffffff}.tch.up{color:#5fd39a}.tch.dn{color:#ff5454}.up{color:#5fd39a}.dn{color:#ff5454}
.tk .live i{display:inline-block;width:8px;height:8px;border-radius:50%;background:#5fd39a;margin-right:6px}
@keyframes livepulse{0%,100%{opacity:1;box-shadow:0 0 0 0 rgba(95,211,154,.6)}70%{opacity:.45;box-shadow:0 0 0 7px rgba(95,211,154,0)}}
.tk .live i{animation:livepulse 2s ease-in-out infinite}
.spark{display:block;width:100%;height:58px;margin-top:16px;overflow:visible}
.spark polyline{fill:none;stroke-width:2.6;stroke-linejoin:round;stroke-linecap:round}
.spark .spark-fill{stroke:none;fill-opacity:.16}
.tc.r-up .spark polyline{stroke:#5fd39a;filter:drop-shadow(0 1px 4px rgba(95,211,154,.55))}
.tc.r-dn .spark polyline{stroke:#ff5454;filter:drop-shadow(0 1px 4px rgba(255,84,84,.55))}
.tc.r-up .spark .spark-fill{fill:#5fd39a}
.tc.r-dn .spark .spark-fill{fill:#ff5454}
@keyframes flashup{0%{color:#5fd39a;text-shadow:0 0 14px rgba(95,211,154,.55)}100%{color:inherit;text-shadow:none}}
@keyframes flashdn{0%{color:#ff5454;text-shadow:0 0 14px rgba(255,84,84,.55)}100%{color:inherit;text-shadow:none}}
.tc.blink-up em{animation:flashup .95s ease}
.tc.blink-dn em{animation:flashdn .95s ease}
#t-next{color:var(--sand);font-weight:700}
@media(prefers-color-scheme:dark){#t-next{color:#e3a95a}}
.dk{background:#0a232b;color:#e8f3f4;padding:72px 0}.dk .head p{color:rgba(255,255,255,.8)}
.dk .head{text-align:center;margin:0 auto 36px}
.dk .head p{margin-left:auto;margin-right:auto}
.dk .card{background:#061a20;border-color:#1b4450;border-top-color:var(--sand);display:flex;flex-direction:column;justify-content:space-between}.dk .card p{color:rgba(255,255,255,.75);margin-bottom:18px}
.dk .card a{color:var(--sand);font-weight:700;font-size:14px;border-top:1px solid #1b4450;padding-top:14px}
.ic{width:44px;height:44px;color:var(--deep2);margin-bottom:12px}@media(prefers-color-scheme:dark){.ic{color:var(--sand)}}
@media(max-width:800px){.tg{grid-template-columns:1fr}}
.mapbox iframe{width:100%;height:400px;border:0;display:block}.mapbox{border:1px solid var(--line)}
.row a{color:var(--sand);font-weight:600}
.pf{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;background:var(--card);border:1px solid var(--line);padding:40px;margin-bottom:36px}
.pf .vis{height:340px;background:linear-gradient(140deg,var(--deep),var(--deep2));display:flex;align-items:center;justify-content:center;border-bottom:3px solid var(--sand)}
.pf .vis svg{width:150px;height:150px}.pf.rev .vis{order:2}
.pf .pill{display:inline-block;font-size:13px;color:var(--sand);border:1px solid var(--sand);padding:2px 12px;border-radius:99px}
.pf h3{font-size:28px;margin:14px 0}.pf p{color:var(--mute);margin:0 0 14px}
.s3{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;text-align:center;border-top:1px solid var(--line);padding-top:18px;margin-top:8px}
.s3 small{display:block;color:var(--mute);font-size:12px}.s3 b{font-size:17px}
@media(max-width:800px){.pf{grid-template-columns:1fr;padding:22px}.pf.rev .vis{order:0}.pf .vis{height:220px}}
.legal{max-width:820px}.legal h3{font-size:20px;margin:34px 0 10px}.legal p{margin:0 0 12px;color:var(--mute)}
.legal ul{list-style:none;margin:0 0 12px;padding:0}.legal li{color:var(--mute);margin:8px 0;padding-left:2.2em;text-indent:-2.2em}
.lang{position:relative;display:inline-flex;align-items:center;flex:none;border:1px solid var(--sand);border-radius:99px;padding:2px;line-height:1.4}
.lang .thumb{position:absolute;top:2px;bottom:2px;left:2px;width:calc(50% - 2px);border-radius:99px;background:var(--sand);transition:transform .3s cubic-bezier(.4,0,.2,1)}
.lang.cn .thumb{transform:translateX(100%)}
.lang .lv{position:relative;z-index:1;padding:3px 9px;border-radius:99px;font-size:13px;color:rgba(255,255,255,.75);opacity:1;white-space:nowrap;transition:color .25s}
.lang .lv:hover{color:var(--sand)}
.lang .lv.on{color:var(--deep)}
.lang .lv,.lang .lv:hover,.lang .lv.on{border-bottom:0}
html[lang="zh-CN"] body{font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif}
html[lang="zh-CN"] h1,html[lang="zh-CN"] h2,html[lang="zh-CN"] h3,html[lang="zh-CN"] .logo{font-family:"Songti SC","Noto Serif SC",Georgia,serif}
.logo{display:flex;align-items:center;gap:10px}.logo-img{width:44px;height:44px;object-fit:contain;flex:none;display:inline-block}
.culture{padding:72px 0}.culture .head{max-width:640px}.culture .head p{color:var(--mute);margin:8px 0 0}
.feat{display:grid;gap:30px;margin-top:28px}.feat-row{display:grid;grid-template-columns:1.05fr 1fr;align-items:stretch;gap:0;background:var(--card);border:1px solid var(--line);border-radius:20px;overflow:hidden;box-shadow:0 14px 30px -20px rgba(0,0,0,.35)}
.feat-row.flip .feat-txt{order:-1}
.feat-row img{width:100%;height:100%;min-height:260px;max-height:380px;object-fit:cover;display:block}
.feat-txt{display:flex;flex-direction:column;justify-content:center;padding:34px 40px}
.feat-txt small{color:var(--sand);font-size:13px;letter-spacing:.08em}
.feat-txt h3{font-size:24px;margin:8px 0 12px}
.feat-txt p{color:var(--mute);margin:0;line-height:1.75;max-width:42em}
.feat-txt a{color:var(--sand);font-weight:700;font-size:14px;margin-top:18px}
@media(max-width:800px){.feat-row{grid-template-columns:1fr}.feat-row.flip .feat-txt{order:0}.feat-row img{min-height:200px;max-height:none}.feat-txt{padding:24px 22px}}

/* === White Whale registration page === */
.reg-section{background:linear-gradient(180deg,#f6f7f9,#eef0f3);padding:56px 0}
.reg-card{background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:0 18px 40px -26px rgba(0,0,0,.4);padding:36px;max-width:760px;margin:0 auto}
.reg-card>form{width:min(100%,620px);margin-left:auto;margin-right:auto;box-sizing:border-box}
.reg-title{font-size:20px;color:var(--ink);margin:0 0 8px;text-align:center}
.reg-sub{font-size:13px;color:var(--mute);margin:0 auto 26px;max-width:560px;text-align:center}
.reg-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.reg-field{display:flex;flex-direction:column}
.reg-field.full{grid-column:1/-1}
.reg-label{font-size:12px;font-weight:600;color:var(--ink);margin:0 0 6px;letter-spacing:.02em}
.reg-label b{color:#f7931a;font-weight:700}
.reg-input,.reg-select,.reg-area{border:1px solid #e4e6ea;border-radius:10px;padding:10px 12px;font-size:14px;font-family:inherit;color:var(--ink);background:#fbfbfc;outline:none;transition:border-color .2s,box-shadow .2s;width:100%;box-sizing:border-box}
.reg-input:focus,.reg-select:focus,.reg-area:focus{border-color:#f7931a;box-shadow:0 0 0 3px rgba(247,147,26,.16);background:#fff}
.reg-area{resize:vertical;min-height:96px;font-family:inherit}
.reg-checks{border-top:1px solid var(--line);margin-top:22px;padding-top:18px;display:flex;flex-direction:column;gap:12px}
.reg-checks label{display:flex;gap:10px;align-items:center;justify-content:center;font-size:13px;color:var(--mute);cursor:pointer}
.reg-checks input{accent-color:#f7931a;width:15px;height:15px;margin-top:0;flex:none}
.reg-btn{display:block;width:min(100%,340px);margin:22px auto 0;background:linear-gradient(90deg,#f7931a,#ffa94d);color:#1b1b21;font-weight:700;font-size:15px;letter-spacing:.08em;border:none;border-radius:12px;padding:14px;cursor:pointer;transition:transform .15s,box-shadow .2s;box-shadow:0 10px 22px -12px rgba(247,147,26,.7)}
.reg-btn:hover{transform:translateY(-1px);box-shadow:0 14px 26px -12px rgba(247,147,26,.8)}
.reg-btn:disabled{opacity:.7;cursor:default}
.reg-ok{display:none;text-align:center;background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:0 18px 40px -26px rgba(0,0,0,.4);padding:40px;max-width:760px;margin:0 auto}
.reg-ok .h{font-size:24px;color:var(--ink);margin:14px 0 6px}
.reg-ok .code{display:inline-block;margin:14px 0 18px;background:#f7931a;color:#fff;font-weight:700;letter-spacing:.1em;padding:8px 18px;border-radius:99px;font-family:ui-monospace,Menlo,monospace}
.reg-ok p{font-size:14px;color:var(--mute);line-height:1.8;max-width:520px;margin:0 auto 22px}
.reg-ok .btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.reg-ok .btns a{padding:11px 22px;border-radius:99px;font-weight:600;font-size:13px;text-decoration:none;transition:.2s}
.reg-ok .btns .a1{background:linear-gradient(90deg,#f7931a,#ffa94d);color:#1b1b21}
.reg-ok .btns .a2{border:1px solid #e4e6ea;color:var(--ink)}
.reg-ok .btns a:hover{filter:brightness(1.05)}
@media(max-width:720px){.reg-grid{grid-template-columns:1fr}}