[hidden]{display:none!important}
/* 潮汐井 Tidewell — deep-sea teal / seafoam / coral */
:root{
  --abyss:#04232A; --deep:#073A44; --teal:#0F5E68; --foam:#7FD8C6; --mist:#E6FBF6; --coral:#FF8A6B; --pearl:#F3FFFC;
  --dim:rgba(230,251,246,.66); --line:rgba(127,216,198,.22); --glass:rgba(7,58,68,.55);
  --ok:#7FD8C6; --bad:#FF8A6B;
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong","Georgia",serif;
  --sans:"Inter","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"JetBrains Mono","SFMono-Regular",Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html{background:#021A20;scroll-behavior:smooth;scroll-padding-top:72px}
body{margin:0;color:var(--mist);font-family:var(--sans);line-height:1.65;
  background:linear-gradient(180deg,#06343D 0px,var(--abyss) 900px,#03262E 60%,#021A20 100%);min-height:100vh;overflow-x:hidden}
a{color:var(--foam);text-decoration:none}
a:hover{text-decoration:underline}
#sea{position:fixed;inset:0;width:100%;height:100%;z-index:0;pointer-events:none}
.rays{position:fixed;inset:0 0 auto 0;height:90vh;z-index:0;pointer-events:none;overflow:hidden;mix-blend-mode:screen;opacity:.55}
.rays i{position:absolute;top:-10vh;width:12vw;height:110vh;background:linear-gradient(180deg,rgba(127,216,198,.22),rgba(127,216,198,0) 80%);
  transform-origin:top center;filter:blur(6px);animation:ray 11s ease-in-out infinite}
.rays i:nth-child(1){left:12%;transform:rotate(16deg);animation-delay:-2s}
.rays i:nth-child(2){left:30%;width:7vw;transform:rotate(9deg);animation-delay:-5s}
.rays i:nth-child(3){left:48%;width:15vw;transform:rotate(2deg)}
.rays i:nth-child(4){left:64%;width:8vw;transform:rotate(-8deg);animation-delay:-7s}
.rays i:nth-child(5){left:80%;transform:rotate(-15deg);animation-delay:-3s}
@keyframes ray{0%,100%{opacity:.35;translate:0 0}50%{opacity:1;translate:2vw 0}}

header.top{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:18px;padding:10px 22px;
  background:rgba(4,35,42,.72);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:10px;color:var(--mist)}
.brand:hover{text-decoration:none}
.brand img{border-radius:50%;box-shadow:0 0 18px rgba(127,216,198,.45)}
.brand b{font-family:var(--serif);font-size:18px;letter-spacing:.06em}
.brand em{font-style:normal;margin-left:8px;color:var(--foam);font-size:12px;font-family:var(--mono)}
.nav{display:flex;gap:16px;margin-left:auto;font-size:14px}
.nav a{color:var(--dim)} .nav a:hover{color:var(--foam);text-decoration:none}
.tools{display:flex;gap:8px;align-items:center}
.xbtn,.lang{display:inline-flex;align-items:center;justify-content:center;height:32px;min-width:32px;padding:0 10px;border-radius:16px;
  border:1px solid var(--line);background:rgba(15,94,104,.35);color:var(--mist);cursor:pointer;font:600 12px var(--sans)}
.xbtn:hover,.lang:hover{border-color:var(--foam);text-decoration:none}

main{position:relative;z-index:1}
.hero{position:relative;min-height:calc(100vh - 54px);display:flex;align-items:center;overflow:hidden;padding:56px 22px 150px}
.hero-bg{position:absolute;inset:0;background:url(assets/banner.webp) center/cover no-repeat;opacity:.55;
  -webkit-mask-image:linear-gradient(180deg,#000 55%,transparent);mask-image:linear-gradient(180deg,#000 55%,transparent);
  animation:drift 30s ease-in-out infinite alternate}
.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(ellipse at 70% 10%,rgba(127,216,198,.18),transparent 55%),linear-gradient(90deg,rgba(4,35,42,.92) 0%,rgba(4,35,42,.55) 55%,rgba(4,35,42,.75));z-index:0}
@keyframes drift{from{transform:scale(1.05) translate(0,0)}to{transform:scale(1.12) translate(-1.5%,1%)}}
.ripples{position:absolute;left:50%;top:-120px;width:0;height:0;z-index:0}
.ripples i{position:absolute;left:-40px;top:-14px;width:80px;height:28px;border:2px solid rgba(127,216,198,.35);border-radius:50%;animation:rip 6s ease-out infinite}
.ripples i:nth-child(2){animation-delay:2s}.ripples i:nth-child(3){animation-delay:4s}
@keyframes rip{0%{transform:scale(.4);opacity:.9}100%{transform:scale(14);opacity:0}}
.hero-in{position:relative;z-index:2;max-width:1180px;margin:0 auto;width:100%;display:grid;grid-template-columns:300px 1fr 260px;gap:40px;align-items:center}

.sonar{position:relative;width:300px;height:300px;border-radius:50%;display:grid;place-items:center;
  background:radial-gradient(circle,rgba(15,94,104,.55) 0%,rgba(4,35,42,.2) 62%,transparent 70%)}
.sonar img{width:62%;height:62%;border-radius:50%;object-fit:cover;position:relative;z-index:2;
  box-shadow:0 0 40px rgba(127,216,198,.45),0 0 0 1px rgba(127,216,198,.4);animation:bob 6s ease-in-out infinite}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
.sweep{position:absolute;inset:0;border-radius:50%;background:conic-gradient(from 0deg,rgba(127,216,198,.55),rgba(127,216,198,0) 70deg,transparent 360deg);
  animation:spin 4s linear infinite;-webkit-mask:radial-gradient(circle,transparent 30%,#000 31%);mask:radial-gradient(circle,transparent 30%,#000 31%)}
@keyframes spin{to{transform:rotate(360deg)}}
.ring{position:absolute;border-radius:50%;border:1px solid rgba(127,216,198,.28)}
.r1{inset:0}.r2{inset:15%}.r3{inset:-12%;border-style:dashed;opacity:.5;animation:spin 60s linear infinite reverse}
.blip{position:absolute;width:8px;height:8px;border-radius:50%;background:var(--coral);box-shadow:0 0 12px var(--coral);opacity:0;animation:blip 4s linear infinite}
.b1{top:16%;left:70%;animation-delay:.5s}.b2{top:68%;left:82%;animation-delay:1.6s}.b3{top:80%;left:22%;animation-delay:2.9s}
@keyframes blip{0%,100%{opacity:0;transform:scale(.4)}8%{opacity:1;transform:scale(1.2)}40%{opacity:0;transform:scale(.6)}}

.kicker{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin:0 0 6px;color:var(--foam);font-size:13px;letter-spacing:.14em;text-transform:uppercase}
.pill{display:inline-flex;align-items:center;gap:7px;padding:3px 12px;border-radius:20px;border:1px solid var(--line);background:rgba(4,35,42,.6);letter-spacing:.04em;text-transform:none;color:var(--mist)}
.pill i{width:8px;height:8px;border-radius:50%;background:var(--coral);box-shadow:0 0 0 0 rgba(255,138,107,.6);animation:pulse 2s infinite}
.pill.live i{background:var(--foam);box-shadow:0 0 0 0 rgba(127,216,198,.6)}
.pill.paused i{background:#9fb;animation:none}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(127,216,198,.5)}70%{box-shadow:0 0 0 9px rgba(127,216,198,0)}100%{box-shadow:0 0 0 0 rgba(127,216,198,0)}}
h1{margin:4px 0 8px;line-height:1.05;font-family:var(--serif);font-weight:700}
.zh-title{display:block;font-size:clamp(48px,7vw,88px);letter-spacing:.12em;
  background:linear-gradient(180deg,var(--pearl) 10%,var(--foam) 90%);-webkit-background-clip:text;background-clip:text;color:transparent;text-shadow:0 0 40px rgba(127,216,198,.25)}
.en-title{display:block;font-size:clamp(20px,2.4vw,28px);letter-spacing:.5em;color:var(--foam);font-weight:400;margin-top:6px}
.tagline{font-size:18px;color:var(--mist);max-width:560px;margin:10px 0 18px}
.ca{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:10px 12px;border-radius:14px;background:rgba(4,35,42,.7);border:1px solid var(--line);max-width:640px}
.ca-l{font:700 12px var(--mono);color:var(--abyss);background:var(--foam);border-radius:6px;padding:2px 7px}
.ca code{font:13px var(--mono);color:var(--pearl);word-break:break-all;flex:1;min-width:0}
.ca code.soon{color:var(--coral);font-family:var(--sans);font-size:14px}
.cta{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0 10px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;height:42px;padding:0 18px;border-radius:21px;border:1px solid var(--foam);
  font:600 14px var(--sans);cursor:pointer;transition:.2s;white-space:nowrap}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn.primary{background:linear-gradient(180deg,#9BE7D8,var(--foam));color:var(--abyss);box-shadow:0 6px 24px rgba(127,216,198,.3)}
.btn.ghost{background:rgba(15,94,104,.3);color:var(--mist);border-color:var(--line)}
.btn.ghost:hover{border-color:var(--foam)}
.btn.sm{height:30px;padding:0 12px;font-size:12px}
.btn[aria-disabled=true]{opacity:.55;cursor:default}
.nfa-mini{font-size:12px;color:var(--dim);margin:6px 0 0}

.gauge-card{background:var(--glass);border:1px solid var(--line);border-radius:22px;padding:20px;text-align:center;backdrop-filter:blur(8px)}
.g-title{margin:0;color:var(--foam);font-size:13px;letter-spacing:.2em}
.gauge{display:flex;justify-content:center;margin:14px 0}
.tube{position:relative;width:78px;height:170px;border-radius:40px;border:2px solid rgba(127,216,198,.5);overflow:hidden;background:rgba(2,26,32,.8)}
.water{position:absolute;left:0;right:0;bottom:0;height:30%;background:linear-gradient(180deg,rgba(127,216,198,.85),rgba(15,94,104,.9));transition:height 1s ease}
.water svg{position:absolute;left:0;top:-10px;width:200%;height:12px;fill:rgba(127,216,198,.85);animation:wave 2.6s linear infinite}
@keyframes wave{to{transform:translateX(-50%)}}
.ticks{position:absolute;inset:10px 0;display:flex;flex-direction:column;justify-content:space-between}
.ticks i{display:block;width:14px;height:1px;background:rgba(230,251,246,.5);margin-left:auto}
.cd{font:700 34px var(--mono);margin:4px 0;color:var(--pearl)}
.cd.soon{font:700 22px var(--serif);color:var(--coral)}
.g-sub{font-size:12px;color:var(--dim);margin:0 0 12px}
.g-pool{display:flex;align-items:baseline;justify-content:center;gap:6px;border-top:1px solid var(--line);padding-top:12px;font-size:13px;color:var(--dim)}
.g-pool b{font:700 20px var(--mono);color:var(--foam)} .g-pool em{font-style:normal}

.kelp{position:absolute;left:0;right:0;bottom:0;width:100%;height:220px;z-index:1;pointer-events:none}
.kelp path{fill:none;stroke:#0F5E68;stroke-width:14;stroke-linecap:round;opacity:.85}
.kelp .k2 path,.kelp .k4 path{stroke:#127380;stroke-width:10}
.kelp .k5 path{stroke:var(--coral);stroke-width:6;opacity:.55}
.kelp .k{transform-box:fill-box;transform-origin:bottom center;animation:sway 7s ease-in-out infinite}
.k2{animation-delay:-2s!important}.k3{animation-delay:-4s!important}.k4{animation-delay:-1s!important}.k5{animation-duration:5s!important}
@keyframes sway{0%,100%{transform:rotate(-4deg)}50%{transform:rotate(5deg)}}

.notice{max-width:1180px;margin:0 auto 10px;padding:12px 16px;border-radius:12px;border:1px solid rgba(255,138,107,.5);background:rgba(255,138,107,.1);color:#FFD2C4;position:relative;z-index:2;font-size:14px}
.sec{position:relative;z-index:2;max-width:1180px;margin:0 auto;padding:64px 22px}
.sec h2{font-family:var(--serif);font-size:clamp(26px,3.4vw,38px);margin:0 0 10px;letter-spacing:.06em;display:flex;align-items:center;gap:14px}
.sec h2::before{content:"";width:34px;height:34px;flex:none;border-radius:50%;
  background:radial-gradient(circle at 35% 30%,#fff 0%,var(--pearl) 18%,var(--foam) 55%,var(--teal) 100%);box-shadow:0 0 18px rgba(127,216,198,.6);animation:glow 3.6s ease-in-out infinite}
@keyframes glow{0%,100%{box-shadow:0 0 10px rgba(127,216,198,.4)}50%{box-shadow:0 0 26px rgba(127,216,198,.9)}}
.hint{color:var(--dim);margin:0 0 18px}
.small{font-size:13px}.dim{color:var(--dim)}.mono{font-family:var(--mono)}.warn{color:var(--coral)}
.lore{display:grid;grid-template-columns:1.2fr 1fr;gap:28px;background:var(--glass);border:1px solid var(--line);border-radius:22px;padding:28px}
.lore p{margin:0}.lore .lead{font-family:var(--serif);font-size:19px;line-height:1.9}
.glossary{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:18px}
.gl{padding:14px 16px;border-radius:16px;border:1px solid var(--line);background:rgba(2,26,32,.55)}
.gl b{display:block;font-family:var(--serif);color:var(--foam);font-size:17px}
.gl span{font-size:13px;color:var(--dim)}

.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.st{background:var(--glass);border:1px solid var(--line);border-radius:18px;padding:16px 18px;position:relative;overflow:hidden}
.st::after{content:"";position:absolute;right:-30px;bottom:-30px;width:90px;height:90px;border-radius:50%;border:1px solid rgba(127,216,198,.18);animation:rip2 5s ease-out infinite}
@keyframes rip2{0%{transform:scale(.3);opacity:1}100%{transform:scale(1.6);opacity:0}}
.st span{display:block;font-size:13px;color:var(--dim)}
.st b{font:700 24px var(--mono);color:var(--pearl);word-break:break-all}
.st em{font-style:normal;margin-left:6px;color:var(--foam);font-size:12px}
.stats.mini .st b{font-size:18px}.stats.mini{grid-template-columns:repeat(5,1fr)}

.steps{list-style:none;padding:0;margin:0 0 24px;display:grid;grid-template-columns:repeat(3,1fr);gap:14px;counter-reset:s}
.steps li{counter-increment:s;background:var(--glass);border:1px solid var(--line);border-radius:18px;padding:18px 18px 18px 64px;position:relative}
.steps li::before{content:counter(s);position:absolute;left:16px;top:16px;width:34px;height:34px;border-radius:50%;display:grid;place-items:center;
  font:700 15px var(--mono);color:var(--abyss);background:radial-gradient(circle at 35% 30%,#fff,var(--foam))}
.steps b{display:block;font-family:var(--serif);font-size:17px;color:var(--foam);margin-bottom:4px}
.steps span{font-size:14px;color:var(--mist)}
.orders{border:1px solid rgba(127,216,198,.4);border-radius:22px;padding:22px;background:linear-gradient(180deg,rgba(15,94,104,.45),rgba(4,35,42,.6))}
.orders-head{display:flex;justify-content:space-between;gap:16px;align-items:flex-start;flex-wrap:wrap}
.orders h3{margin:0 0 4px;font-family:var(--serif);font-size:22px}
.prompt{white-space:pre-wrap;word-break:break-word;max-height:320px;overflow:auto;background:rgba(2,20,25,.85);border:1px solid var(--line);border-radius:14px;padding:14px;font:12.5px/1.6 var(--mono);color:#CFF3EA}
.files{list-style:none;padding:0;margin:8px 0 0;display:grid;gap:8px}
.files li{display:flex;gap:10px;align-items:center;flex-wrap:wrap;padding:10px 12px;border-radius:12px;background:rgba(2,26,32,.55);border:1px solid var(--line);font-size:13px}
.files li b{font-family:var(--mono);color:var(--foam)} .files li code{font:11px var(--mono);color:var(--dim);word-break:break-all;flex:1;min-width:200px}

.pearls{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.pc{position:relative;text-align:center;border-radius:22px;padding:22px 14px 18px;background:var(--glass);border:1px solid var(--line);overflow:hidden}
.orb{width:84px;height:84px;margin:4px auto 12px;border-radius:50%;animation:float 5s ease-in-out infinite}
.pc:nth-child(2) .orb{animation-delay:-1s}.pc:nth-child(3) .orb{animation-delay:-2s}.pc:nth-child(4) .orb{animation-delay:-3s}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-7px)}}
.o0{background:radial-gradient(circle at 35% 30%,#fff 0,#E6E1D3 25%,#A7A08E 70%,#5d5a50 100%);box-shadow:0 0 18px rgba(230,225,211,.3)}
.o1{background:radial-gradient(circle at 35% 30%,#fff 0,#E3ECFF 25%,#9FB4D8 70%,#4a5f86 100%);box-shadow:0 0 22px rgba(190,210,255,.45)}
.o2{background:radial-gradient(circle at 35% 30%,#fff 0,#C9FFF2 22%,var(--foam) 60%,var(--teal) 100%);box-shadow:0 0 28px rgba(127,216,198,.7)}
.o3{background:radial-gradient(circle at 35% 30%,#fff 0,#FFD9CE 20%,var(--coral) 55%,#5A1E33 100%);box-shadow:0 0 34px rgba(255,138,107,.75)}
.pc h3{margin:0;font-family:var(--serif);font-size:20px}
.pc .x{font:700 30px var(--mono);color:var(--pearl);margin:4px 0}
.pc .p{font-size:13px;color:var(--dim)}
.pc .bar{height:6px;border-radius:3px;background:rgba(127,216,198,.15);margin-top:12px;overflow:hidden}
.pc .bar i{display:block;height:100%;background:linear-gradient(90deg,var(--foam),var(--coral));border-radius:3px}

.law{margin:0;padding-left:0;list-style:none;display:grid;gap:10px;counter-reset:l}
.law li{counter-increment:l;position:relative;padding:14px 16px 14px 56px;border-radius:16px;background:var(--glass);border:1px solid var(--line);font-size:15px}
.law li::before{content:counter(l,decimal-leading-zero);position:absolute;left:16px;top:14px;font:700 14px var(--mono);color:var(--coral)}
.law li b{color:var(--foam)}

.lookup{display:flex;gap:10px;max-width:760px}
.lookup input{flex:1;min-width:0;height:44px;border-radius:22px;border:1px solid var(--line);background:rgba(2,26,32,.8);color:var(--pearl);padding:0 18px;font:14px var(--mono)}
.lookup input:focus{outline:none;border-color:var(--foam);box-shadow:0 0 0 3px rgba(127,216,198,.2)}
.my{margin-top:18px}
.shells{display:grid;gap:8px;margin-top:14px}
.sh{display:grid;grid-template-columns:90px 1fr 90px 1.4fr;gap:10px;align-items:center;padding:10px 14px;border-radius:12px;background:rgba(2,26,32,.6);border:1px solid var(--line);font-size:13px}
.sh .g{font-weight:700;color:var(--foam)}

.faq{display:grid;gap:10px}
.faq details{background:var(--glass);border:1px solid var(--line);border-radius:16px;padding:0 18px}
.faq summary{cursor:pointer;padding:16px 0;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:10px}
.faq summary::after{content:"+";color:var(--foam);font:700 18px var(--mono)}
.faq details[open] summary::after{content:"−"}
.faq details p{margin:0 0 16px;color:var(--dim);font-size:14px}

.foot{position:relative;z-index:2;border-top:1px solid var(--line);background:rgba(2,20,25,.85);margin-top:40px}
.foot-in{max-width:1180px;margin:0 auto;padding:30px 22px 40px;display:grid;gap:16px}
.foot-brand{display:flex;gap:12px;align-items:center}.foot-brand img{border-radius:50%}
.foot-brand b{display:block;font-family:var(--serif);font-size:18px}.foot-brand span{font-size:12px;color:var(--dim)}
.foot-links{display:flex;gap:18px;flex-wrap:wrap;font-size:14px}
.nfa{font-size:12px;color:var(--dim);margin:0;border-top:1px dashed var(--line);padding-top:14px}
.toast{position:fixed;left:50%;bottom:30px;transform:translateX(-50%) translateY(20px);background:var(--foam);color:var(--abyss);padding:10px 18px;border-radius:20px;font-weight:700;font-size:14px;opacity:0;transition:.25s;z-index:50;pointer-events:none}
.toast.on{opacity:1;transform:translateX(-50%) translateY(0)}

.stats2{margin-top:12px}.st b.sm{font-size:16px;word-break:normal;overflow-wrap:anywhere}
.sub-block{margin-top:30px}.sub-block h3{margin:0 0 6px;font-size:20px;color:var(--pearl)}
.chain-src{display:flex;align-items:center;gap:8px;color:var(--foam);margin:6px 0 0}
.chain-src i{width:8px;height:8px;border-radius:50%;background:var(--foam);animation:pulse 2s infinite}
.chain-src.off{color:var(--dim)}.chain-src.off i{background:var(--coral)}
.rc{display:grid;grid-template-columns:60px 1.2fr 1.3fr 1fr 1fr;gap:10px;align-items:center;padding:10px 14px;border-radius:12px;background:rgba(2,26,32,.6);border:1px solid var(--line);font-size:13px}
.rc .g{font-weight:700;color:var(--foam)}.rc a{color:var(--mist)}
@media (max-width:1080px){
  .hero-in{grid-template-columns:240px 1fr;}
  .sonar{width:240px;height:240px}
  .gauge-card{grid-column:1/-1;display:grid;grid-template-columns:auto 1fr;gap:4px 20px;text-align:left;align-items:center}
  .gauge-card .gauge{grid-row:1/5;margin:0}
  .nav{display:none}.tools{margin-left:auto}
  .steps{grid-template-columns:1fr 1fr}
}
@media (max-width:720px){
  header.top{padding:8px 14px}
  .hero{padding:28px 16px 120px;min-height:auto}
  .hero-in{grid-template-columns:1fr;gap:22px;text-align:center}
  .sonar{width:210px;height:210px;margin:0 auto}
  .kicker,.cta{justify-content:center}
  .tagline{font-size:16px;margin-left:auto;margin-right:auto}
  .ca{margin:0 auto;text-align:left}
  .gauge-card{grid-template-columns:auto 1fr}
  .tube{width:60px;height:130px}
  .cd{font-size:28px}
  .sec{padding:44px 16px}
  .lore{grid-template-columns:1fr;padding:20px}
  .glossary{grid-template-columns:1fr 1fr}
  .stats{grid-template-columns:1fr 1fr}.stats.mini{grid-template-columns:1fr 1fr}
  .st b{font-size:19px}
  .steps{grid-template-columns:1fr}
  .pearls{grid-template-columns:1fr 1fr}
  .orb{width:64px;height:64px}
  .sh{grid-template-columns:1fr 1fr}
  .rc{grid-template-columns:1fr 1fr}
  .lookup{flex-direction:column}
  .kelp{height:130px}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}