/* =========================================================
   蓝眼泪 · 追泪指南  —  style.css
   纯静态站点，无外部依赖
   ========================================================= */

:root{
  --bg:#04080e;
  --bg-2:#060f18;
  --panel:rgba(255,255,255,.045);
  --panel-2:rgba(255,255,255,.025);
  --line:rgba(126,214,255,.16);
  --line-2:rgba(126,214,255,.28);
  --ink:#e9f5fc;
  --dim:#8ea8bc;
  --dim-2:#6c8699;
  --glow:#38d9ff;
  --glow-2:#7af7e0;
  --warm:#ffb27a;
  --sand:#f2e8d2;
  --ink-blue:#1b3b52;
  --vermilion:#c0442f;
  --r-lg:20px;
  --r-md:14px;
  --max:1180px;
  --ease:cubic-bezier(.22,.68,.16,1);
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --font-serif:"Songti SC","Noto Serif SC",Georgia,"Times New Roman",serif;
  --font-hand:"KaiTi","STKaiti","楷体","Kaiti SC",serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.25;letter-spacing:.01em}
p{margin:0}
em{font-style:normal}
code{font-family:var(--font-mono);font-size:.9em;background:rgba(126,214,255,.1);padding:.1em .38em;border-radius:5px}

body::before{
  content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:
    radial-gradient(900px 600px at 78% -8%,rgba(32,130,190,.22),transparent 62%),
    radial-gradient(700px 500px at 6% 12%,rgba(40,90,160,.16),transparent 60%),
    radial-gradient(1200px 800px at 50% 110%,rgba(18,190,190,.1),transparent 65%),
    linear-gradient(180deg,#050a11 0%,#04080e 40%,#04080e 100%);
}
.grain{
  position:fixed;inset:0;z-index:1;pointer-events:none;opacity:.045;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- 顶部进度 / 导航 ---------- */
.progress{
  position:fixed;top:0;left:0;height:2px;width:0;z-index:60;
  background:linear-gradient(90deg,var(--glow),var(--glow-2));
  box-shadow:0 0 12px rgba(56,217,255,.75);
  transition:width .1s linear;
}
.nav{
  position:fixed;top:0;left:0;right:0;z-index:50;
  display:flex;align-items:center;justify-content:space-between;
  gap:20px;padding:16px clamp(18px,4vw,42px);
  transition:background .4s var(--ease),padding .4s var(--ease),border-color .4s;
  border-bottom:1px solid transparent;
}
.nav.solid{
  background:rgba(5,11,18,.72);
  backdrop-filter:blur(16px) saturate(1.3);
  -webkit-backdrop-filter:blur(16px) saturate(1.3);
  border-bottom-color:rgba(126,214,255,.1);
  padding-top:11px;padding-bottom:11px;
}
.brand{display:flex;align-items:center;gap:10px;font-weight:600;letter-spacing:.06em}
.brand-dot{
  width:10px;height:10px;border-radius:50%;
  background:radial-gradient(circle at 35% 35%,#bff8ff,#2ad4ff 55%,#1a86c8);
  box-shadow:0 0 14px rgba(56,217,255,.9),0 0 34px rgba(56,217,255,.45);
  animation:breathe 3.6s ease-in-out infinite;
}
@keyframes breathe{0%,100%{opacity:.7;transform:scale(.9)}50%{opacity:1;transform:scale(1.15)}}
.brand-text{font-size:16px;display:flex;align-items:baseline;gap:8px}
.brand-text em{font-style:normal;font-size:11px;letter-spacing:.22em;color:var(--dim-2);font-weight:400}
.nav-links{display:flex;gap:6px;font-size:14px}
.nav-links a{
  padding:7px 14px;border-radius:99px;color:var(--dim);
  transition:color .25s,background .25s;
}
.nav-links a:hover{color:var(--ink);background:rgba(255,255,255,.06)}
.nav-links a.on{color:var(--glow);background:rgba(56,217,255,.1)}
.nav-toggle{
  display:none;width:40px;height:36px;border:1px solid var(--line);border-radius:10px;
  background:transparent;padding:0;cursor:pointer;position:relative;
}
.nav-toggle span{
  position:absolute;left:11px;width:18px;height:1.6px;background:var(--ink);
  transition:transform .3s var(--ease),opacity .2s;
}
.nav-toggle span:first-child{top:13px}
.nav-toggle span:last-child{top:21px}
.nav-toggle.open span:first-child{transform:translateY(4px) rotate(45deg)}
.nav-toggle.open span:last-child{transform:translateY(-4px) rotate(-45deg)}

/* ---------- Hero ---------- */
.hero{
  position:relative;min-height:100svh;display:flex;flex-direction:column;
  justify-content:center;overflow:hidden;isolation:isolate;
}
.hero-media{position:absolute;inset:0;z-index:-3}
.hero-media img{
  width:100%;height:100%;object-fit:cover;object-position:center 62%;
  filter:brightness(.62) saturate(1.15) contrast(1.05);
  transform:scale(1.04);
  animation:slowpan 28s ease-in-out infinite alternate;
}
@keyframes slowpan{from{transform:scale(1.04) translateY(0)}to{transform:scale(1.1) translateY(-14px)}}
.hero::after{
  content:"";position:absolute;inset:0;z-index:-2;
  background:
    linear-gradient(180deg,rgba(4,8,14,.86) 0%,rgba(4,8,14,.32) 34%,rgba(4,8,14,.55) 68%,#04080e 100%),
    radial-gradient(60% 50% at 50% 78%,rgba(20,150,200,.16),transparent 70%);
}
.sea-canvas{position:absolute;inset:0;z-index:-1;width:100%;height:100%;pointer-events:none}
.hero-inner{
  width:100%;max-width:var(--max);margin:0 auto;
  padding:120px clamp(20px,5vw,42px) 90px;
}
.eyebrow{
  font-size:12.5px;letter-spacing:.32em;color:var(--glow);text-transform:uppercase;
  margin-bottom:22px;display:flex;align-items:center;gap:12px;
}
.eyebrow::before{content:"";width:34px;height:1px;background:linear-gradient(90deg,var(--glow),transparent)}
.hero-title{
  display:flex;font-family:var(--font-serif);font-weight:700;
  font-size:clamp(4.2rem,15vw,11rem);line-height:.92;letter-spacing:.04em;
  margin-bottom:26px;
}
.hero-title span{
  display:inline-block;
  background:linear-gradient(180deg,#ffffff 8%,#d9f7ff 42%,#4fd8ff 88%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  filter:drop-shadow(0 0 26px rgba(56,217,255,.35));
  animation:floaty 6s ease-in-out infinite;
  animation-delay:calc(var(--i) * .45s);
}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-9px)}}
.hero-sub{
  font-family:var(--font-serif);font-size:clamp(1.15rem,2.6vw,1.7rem);
  line-height:1.6;color:#dbedf7;margin-bottom:18px;max-width:22em;
}
.hero-desc{color:var(--dim);font-size:14.5px;max-width:34em;margin-bottom:34px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;gap:9px;
  padding:13px 26px;border-radius:99px;font-size:14.5px;font-weight:500;
  background:linear-gradient(120deg,#2ad4ff,#5df0d5);color:#03151d;
  box-shadow:0 8px 30px rgba(45,200,240,.28);
  transition:transform .25s var(--ease),box-shadow .25s;
}
.btn:hover{transform:translateY(-2px);box-shadow:0 12px 38px rgba(45,200,240,.42)}
.btn.ghost{
  background:transparent;color:var(--ink);
  border:1px solid rgba(126,214,255,.32);box-shadow:none;
}
.btn.ghost:hover{background:rgba(56,217,255,.08);border-color:rgba(126,214,255,.6)}
.hero-foot{
  position:absolute;left:0;right:0;bottom:0;
  display:flex;justify-content:space-between;align-items:center;
  padding:0 clamp(20px,5vw,42px) 26px;font-size:11.5px;color:var(--dim-2);letter-spacing:.12em;
}
.scroll-hint{display:flex;align-items:center;gap:10px}
.scroll-hint i{
  display:block;width:1px;height:34px;background:linear-gradient(180deg,var(--glow),transparent);
  animation:drop 2s ease-in-out infinite;
}
@keyframes drop{0%{opacity:0;transform:scaleY(.2)}40%{opacity:1}100%{opacity:0;transform:scaleY(1)}}

/* ---------- 通用 section ---------- */
.sec{position:relative;padding:clamp(72px,10vw,132px) clamp(20px,5vw,42px)}
.sec.alt{background:linear-gradient(180deg,rgba(8,20,32,.55),rgba(6,14,22,.2))}
.sec.alt::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(126,214,255,.22),transparent);
}
.wrap{max-width:var(--max);margin:0 auto}
.sec-head{max-width:820px;margin-bottom:clamp(38px,5vw,62px)}
.sec-num{
  display:inline-block;font-family:var(--font-mono);font-size:12px;letter-spacing:.3em;
  color:var(--glow);border:1px solid rgba(56,217,255,.28);border-radius:99px;
  padding:3px 12px;margin-bottom:22px;
}
.sec-head h2{
  font-family:var(--font-serif);font-size:clamp(1.75rem,4.4vw,3rem);
  line-height:1.34;letter-spacing:.02em;
}
.sec-head h2 em{
  background:linear-gradient(100deg,#6fe9ff,#8affd9);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.lede{margin-top:20px;color:#b9cddb;font-size:15.5px;line-height:1.85}
.lede b{color:var(--ink);font-weight:600}

/* ---------- 原理 ---------- */
.split{display:grid;grid-template-columns:1.05fr 1fr;gap:clamp(26px,4vw,54px);align-items:start}
.glow-panel{
  position:relative;aspect-ratio:4/3;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid rgba(126,214,255,.2);
  background:radial-gradient(120% 100% at 50% 120%,#07202e 0%,#040c13 60%,#02060a 100%);
  box-shadow:inset 0 0 60px rgba(0,0,0,.7),0 20px 60px rgba(0,0,0,.4);
  cursor:crosshair;
}
#touchCanvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.glow-hint{
  position:absolute;left:16px;bottom:14px;font-size:11.5px;color:rgba(160,220,240,.6);
  letter-spacing:.14em;pointer-events:none;
}
.glow-tag{
  position:absolute;right:14px;top:14px;font-size:11px;color:rgba(180,240,255,.75);
  background:rgba(6,20,30,.6);border:1px solid rgba(126,214,255,.2);
  border-radius:99px;padding:4px 11px;pointer-events:none;
}
.glow-tag b{color:var(--glow)}
.cap{margin-top:12px;font-size:12px;color:var(--dim-2);line-height:1.7}
.split-text h3{font-family:var(--font-serif);font-size:clamp(1.3rem,2.3vw,1.6rem);margin-bottom:16px}
.split-text p{color:#b6c9d7;font-size:15px;margin-bottom:14px}
.split-text p b{color:#e6f7ff;font-weight:600}
.chain{
  list-style:none;margin:26px 0 0;padding:0;display:grid;gap:10px;
  grid-template-columns:repeat(auto-fit,minmax(96px,1fr));counter-reset:c;
}
.chain li{
  position:relative;padding:14px 12px 12px;border-radius:12px;
  border:1px solid rgba(126,214,255,.14);background:rgba(56,217,255,.04);
  font-size:12px;color:var(--dim);
}
.chain li::after{
  content:"→";position:absolute;right:-13px;top:50%;transform:translateY(-50%);
  color:rgba(126,214,255,.5);font-size:11px;
}
.chain li:last-child::after{display:none}
.chain b{display:block;font-size:13px;color:var(--glow);margin-bottom:3px;font-weight:600}

.species{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:clamp(40px,5vw,64px)}
.sp-card{
  position:relative;border-radius:var(--r-lg);padding:28px;
  border:1px solid var(--line);background:linear-gradient(180deg,var(--panel),var(--panel-2));
  overflow:hidden;transition:border-color .35s,transform .35s var(--ease);
}
.sp-card::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:0;transition:opacity .4s;
  background:radial-gradient(420px 260px at 88% -10%,rgba(56,217,255,.14),transparent 70%);
}
.sp-card:hover{border-color:var(--line-2);transform:translateY(-4px)}
.sp-card:hover::after{opacity:1}
.sp-top{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap;margin-bottom:12px}
.sp-top h3{font-family:var(--font-serif);font-size:1.5rem}
.sp-latin{font-family:var(--font-mono);font-size:11.5px;color:var(--dim-2);letter-spacing:.06em}
.sp-desc{color:#b6c9d7;font-size:14.5px;margin-bottom:20px}
.sp-desc b{color:var(--glow)}
.sp-meta{display:grid;gap:0;margin:0;font-size:13px;border-top:1px solid rgba(126,214,255,.1)}
.sp-meta>div{
  display:flex;gap:14px;padding:9px 0;border-bottom:1px solid rgba(126,214,255,.08);
}
.sp-meta dt{flex:0 0 76px;color:var(--dim-2);margin:0}
.sp-meta dd{margin:0;color:#dceef7}
.sp-orb{
  position:absolute;right:-30px;top:-30px;width:150px;height:150px;border-radius:50%;
  filter:blur(2px);opacity:.5;pointer-events:none;
}
.orb-noctiluca{
  background:radial-gradient(circle at 40% 40%,rgba(120,240,255,.55),rgba(30,140,220,.18) 45%,transparent 70%);
}
.orb-noctiluca i{
  position:absolute;width:5px;height:5px;border-radius:50%;background:#c8fbff;
  box-shadow:0 0 12px #6fe9ff;animation:twinkle 4s ease-in-out infinite;
}
.orb-noctiluca i:nth-child(1){top:38%;left:42%;animation-delay:0s}
.orb-noctiluca i:nth-child(2){top:56%;left:56%;animation-delay:.7s}
.orb-noctiluca i:nth-child(3){top:30%;left:62%;animation-delay:1.4s}
.orb-noctiluca i:nth-child(4){top:64%;left:36%;animation-delay:2.1s}
.orb-ostracod{
  background:radial-gradient(circle at 50% 50%,rgba(90,220,255,.28),transparent 65%);
}
.orb-ostracod i{
  position:absolute;width:4px;height:4px;border-radius:50%;background:#d8fdff;
  box-shadow:0 0 14px #4fe6ff;animation:twinkle 3.2s ease-in-out infinite;
}
.orb-ostracod i:nth-child(1){top:32%;left:38%}
.orb-ostracod i:nth-child(2){top:44%;left:56%;animation-delay:.5s}
.orb-ostracod i:nth-child(3){top:58%;left:44%;animation-delay:1s}
.orb-ostracod i:nth-child(4){top:66%;left:62%;animation-delay:1.5s}
.orb-ostracod i:nth-child(5){top:38%;left:66%;animation-delay:2s}
.orb-ostracod i:nth-child(6){top:52%;left:30%;animation-delay:2.4s}
@keyframes twinkle{0%,100%{opacity:.35;transform:scale(.8)}50%{opacity:1;transform:scale(1.35)}}

.note{
  margin-top:34px;padding:20px 24px;border-radius:var(--r-md);
  border-left:2px solid rgba(255,178,122,.6);
  background:linear-gradient(90deg,rgba(255,178,122,.08),transparent 70%);
  font-size:14px;color:#c6d6e2;
}
.note b{color:var(--warm)}

/* ---------- 条件 ---------- */
.cond-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:16px}
.cond{
  position:relative;padding:24px 22px 22px;border-radius:var(--r-md);
  border:1px solid var(--line);background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.015));
  transition:border-color .3s,transform .3s var(--ease),box-shadow .3s;
}
.cond:hover{
  border-color:rgba(56,217,255,.4);transform:translateY(-3px);
  box-shadow:0 16px 40px rgba(0,0,0,.35),0 0 0 1px rgba(56,217,255,.08) inset;
}
.cond-no{
  font-family:var(--font-mono);font-size:11px;color:rgba(142,168,188,.7);letter-spacing:.16em;
}
.cond h3{font-size:1.05rem;margin:6px 0 4px;color:#eaf7ff}
.cond-val{
  font-family:var(--font-serif);font-size:1.5rem;color:var(--glow);
  letter-spacing:.02em;margin-bottom:10px;
}
.cond-val small{font-size:.62em;color:var(--dim);margin-left:4px;font-family:var(--font-cn)}
.cond>p:last-child{font-size:13.5px;color:#a9bfcd;line-height:1.75}
.cond>p:last-child b{color:#dff4ff}

.golden{
  margin-top:38px;padding:30px clamp(20px,3vw,38px);border-radius:var(--r-lg);
  border:1px dashed rgba(56,217,255,.4);
  background:
    radial-gradient(600px 200px at 12% 0%,rgba(56,217,255,.1),transparent 70%),
    rgba(255,255,255,.02);
  position:relative;
}
.golden-label{
  position:absolute;top:-11px;left:28px;padding:0 10px;background:#060f18;
  font-size:11px;letter-spacing:.28em;color:var(--glow);
}
.golden p{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 8px;
  font-size:15px;color:#e3f6ff;margin-bottom:10px;
}
.golden p b{
  font-weight:500;padding:5px 13px;border-radius:99px;
  background:rgba(56,217,255,.09);border:1px solid rgba(56,217,255,.2);
}
.golden p i{color:rgba(126,214,255,.55);font-style:normal}
.golden-note{font-size:12.5px;color:var(--dim-2)}

.warn{
  display:flex;gap:16px;margin-top:34px;padding:22px 24px;border-radius:var(--r-md);
  border:1px solid rgba(255,120,90,.24);background:rgba(255,90,60,.05);
  font-size:14px;color:#d9c6c0;line-height:1.8;
}
.warn b{color:#ffb3a0}
.warn-ico{
  flex:0 0 26px;height:26px;border-radius:50%;display:grid;place-items:center;
  background:rgba(255,120,90,.18);color:#ff9b82;font-weight:700;font-size:14px;
  border:1px solid rgba(255,120,90,.35);
}

/* ---------- 地图 ---------- */
.map-layout{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(0,1fr);gap:clamp(20px,3vw,34px);align-items:start}
.map-panel{
  margin:0;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid rgba(180,150,110,.35);
  box-shadow:0 30px 70px rgba(0,0,0,.5),0 2px 0 rgba(255,255,255,.06) inset;
  background:var(--sand);
}
.handmap{display:block;width:100%;height:auto;background:var(--sand)}
.map-panel figcaption{
  padding:10px 16px 12px;font-size:11.5px;color:#8a7a5e;background:#ece0c6;
  border-top:1px solid rgba(140,110,70,.2);letter-spacing:.02em;
}
.handmap .pin{cursor:pointer;outline:none}
.handmap .pin .halo{opacity:0;transition:opacity .35s}
.handmap .pin:hover .halo,.handmap .pin.active .halo{opacity:1}
.handmap .pin .core{transition:r .25s var(--ease)}
.handmap .pin:hover .core,.handmap .pin.active .core{r:9}
.handmap .pin text{
  font-family:var(--font-hand);paint-order:stroke;stroke:#f2e8d2;stroke-width:3.6px;
  stroke-linejoin:round;transition:fill .2s;
}
.handmap .pin .num{font-family:var(--font-mono);font-size:13px;stroke-width:3.4px;font-weight:700}
.handmap .pin .name{font-size:19.5px;fill:#1b3b52}
.handmap .pin:hover .name,.handmap .pin.active .name{fill:#0b6f8f}
.handmap .route{animation:dash 40s linear infinite}
@keyframes dash{to{stroke-dashoffset:-420}}

.map-side{display:flex;flex-direction:column;gap:16px;position:sticky;top:88px}
.spot-card{
  padding:24px;border-radius:var(--r-lg);border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  min-height:260px;transition:border-color .3s;
}
.sc-head{display:flex;justify-content:space-between;align-items:flex-start;gap:10px;margin-bottom:4px}
.sc-idx{font-family:var(--font-mono);font-size:11px;color:rgba(142,168,188,.8);letter-spacing:.16em}
.sc-name{font-family:var(--font-serif);font-size:1.5rem;margin:2px 0 6px}
.sc-region{font-size:12.5px;color:var(--dim-2);letter-spacing:.08em}
.sc-tag{
  flex:0 0 auto;font-size:11px;padding:3px 10px;border-radius:99px;
  border:1px solid rgba(56,217,255,.3);color:var(--glow);white-space:nowrap;
}
.sc-tag.low{border-color:rgba(160,180,195,.28);color:var(--dim)}
.sc-desc{font-size:14px;color:#b6c9d7;margin:14px 0 16px;line-height:1.8}
.sc-facts{display:grid;grid-template-columns:1fr 1fr;gap:10px 14px;margin-bottom:14px}
.sc-fact{border-left:1px solid rgba(126,214,255,.22);padding-left:10px}
.sc-fact span{display:block;font-size:10.5px;letter-spacing:.14em;color:var(--dim-2)}
.sc-fact b{font-size:13.5px;color:#e2f4ff;font-weight:500}
.sc-tip{
  font-size:12.5px;color:var(--dim);padding-top:12px;border-top:1px dashed rgba(126,214,255,.16);
}
.sc-tip b{color:var(--warm);font-weight:500}

.spot-list{list-style:none;margin:0;padding:0;display:grid;gap:4px;max-height:340px;overflow:auto}
.spot-list li{
  display:flex;align-items:center;gap:10px;padding:8px 12px;border-radius:9px;
  font-size:13px;color:var(--dim);cursor:pointer;transition:background .2s,color .2s;
}
.spot-list li:hover{background:rgba(255,255,255,.05);color:var(--ink)}
.spot-list li.active{background:rgba(56,217,255,.1);color:var(--glow)}
.spot-list .dot{width:6px;height:6px;border-radius:50%;background:currentColor;flex:0 0 auto}
.spot-list .nm{flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.spot-list .pk{font-family:var(--font-mono);font-size:11px;opacity:.6}

/* ---------- 概率 ---------- */
.calc{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(18px,3vw,30px);align-items:start}
.controls{
  padding:clamp(20px,3vw,30px);border-radius:var(--r-lg);
  border:1px solid var(--line);background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.015));
  display:grid;gap:20px;
}
.ctl{display:grid;gap:9px}
.ctl label{
  font-size:12.5px;letter-spacing:.1em;color:var(--dim);display:flex;
  justify-content:space-between;align-items:baseline;gap:8px;
}
.ctl label small{font-size:11px;color:var(--dim-2);letter-spacing:0}
.ctl output{font-family:var(--font-mono);font-size:13px;color:var(--glow)}
.ctl-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
select{
  width:100%;appearance:none;padding:11px 34px 11px 14px;border-radius:10px;
  background:rgba(4,14,22,.7) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%2378d6f0' stroke-width='1.6'/%3E%3C/svg%3E") no-repeat right 13px center;
  border:1px solid rgba(126,214,255,.22);color:var(--ink);font-size:14px;font-family:inherit;
  cursor:pointer;transition:border-color .25s;
}
select:hover,select:focus{border-color:rgba(56,217,255,.55);outline:none}
input[type=range]{
  -webkit-appearance:none;appearance:none;width:100%;height:3px;border-radius:3px;
  background:linear-gradient(90deg,rgba(56,217,255,.65),rgba(56,217,255,.12));
  outline:none;
}
input[type=range]::-webkit-slider-thumb{
  -webkit-appearance:none;width:17px;height:17px;border-radius:50%;
  background:radial-gradient(circle at 35% 35%,#e8fdff,#38d9ff 60%,#1a8dc4);
  border:none;cursor:pointer;box-shadow:0 0 0 4px rgba(56,217,255,.12),0 0 14px rgba(56,217,255,.6);
  transition:box-shadow .2s;
}
input[type=range]::-webkit-slider-thumb:hover{box-shadow:0 0 0 6px rgba(56,217,255,.18),0 0 20px rgba(56,217,255,.8)}
input[type=range]::-moz-range-thumb{
  width:16px;height:16px;border:none;border-radius:50%;background:#38d9ff;cursor:pointer;
}
.ticks{display:flex;justify-content:space-between;font-size:10px;color:var(--dim-2);font-family:var(--font-mono)}

.windrose{
  display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,auto);
  gap:5px;justify-items:center;align-items:center;
  padding:6px;border-radius:12px;background:rgba(4,14,22,.4);border:1px solid rgba(126,214,255,.12);
}
.windrose button{
  width:100%;padding:7px 0;border-radius:8px;border:1px solid transparent;
  background:transparent;color:var(--dim);font-size:12.5px;font-family:inherit;cursor:pointer;
  transition:all .2s var(--ease);
}
.windrose button:hover{color:var(--ink);background:rgba(255,255,255,.06)}
.windrose button.on{
  background:rgba(56,217,255,.14);border-color:rgba(56,217,255,.45);color:var(--glow);
  box-shadow:0 0 16px rgba(56,217,255,.18) inset;
}
.windrose .rose-center{
  font-size:10.5px;color:var(--dim-2);letter-spacing:.06em;text-align:center;line-height:1.5;
  grid-column:2;grid-row:2;
}
.windrose button[data-dir="NW"]{grid-column:1;grid-row:1}
.windrose button[data-dir="N"]{grid-column:2;grid-row:1}
.windrose button[data-dir="NE"]{grid-column:3;grid-row:1}
.windrose button[data-dir="W"]{grid-column:1;grid-row:2}
.windrose button[data-dir="E"]{grid-column:3;grid-row:2}
.windrose button[data-dir="SW"]{grid-column:1;grid-row:3}
.windrose button[data-dir="S"]{grid-column:2;grid-row:3}
.windrose button[data-dir="SE"]{grid-column:3;grid-row:3}

.switch{display:flex;align-items:center;gap:10px;cursor:pointer;font-size:12.5px;color:var(--dim)}
.switch input{position:absolute;opacity:0;width:0;height:0}
.switch-ui{
  position:relative;width:38px;height:21px;border-radius:99px;flex:0 0 auto;
  background:rgba(255,255,255,.1);border:1px solid rgba(126,214,255,.2);transition:background .25s;
}
.switch-ui::after{
  content:"";position:absolute;top:2px;left:2px;width:15px;height:15px;border-radius:50%;
  background:#8ea8bc;transition:transform .25s var(--ease),background .25s;
}
.switch input:checked+.switch-ui{background:rgba(56,217,255,.3);border-color:rgba(56,217,255,.6)}
.switch input:checked+.switch-ui::after{transform:translateX(17px);background:#bdf7ff;box-shadow:0 0 10px #38d9ff}
.switch-txt{font-size:11.5px;line-height:1.4}

.result{
  padding:clamp(20px,3vw,30px);border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:
    radial-gradient(500px 300px at 50% 0%,rgba(56,217,255,.09),transparent 70%),
    linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.01));
  position:relative;overflow:hidden;
}
.gauge-wrap{position:relative;width:min(100%,320px);margin:0 auto 6px}
.gauge{width:100%;height:auto;display:block}
.gauge-track{fill:none;stroke:rgba(255,255,255,.08);stroke-width:14;stroke-linecap:round}
.gauge-fill{
  fill:none;stroke:url(#gaugeGrad);stroke-width:14;stroke-linecap:round;
  stroke:var(--glow);
  filter:drop-shadow(0 0 10px rgba(56,217,255,.65));
  transition:stroke-dashoffset .7s var(--ease),stroke .5s;
}
.gauge-read{
  position:absolute;left:0;right:0;bottom:6px;text-align:center;
}
.gauge-read b{
  font-family:var(--font-serif);font-size:clamp(2.6rem,6vw,3.4rem);line-height:1;
  color:#f2fbff;letter-spacing:-.01em;
}
.gauge-read span{font-size:1.1rem;color:var(--dim);margin-left:2px}
.gauge-read em{
  display:block;font-style:normal;font-size:12.5px;letter-spacing:.22em;
  color:var(--glow);margin-top:8px;
}
.result-meta{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin:12px 0 14px}
.pill{
  font-size:11.5px;padding:4px 12px;border-radius:99px;
  border:1px solid rgba(56,217,255,.28);color:#cdf3ff;background:rgba(56,217,255,.07);
}
.pill.ghost{border-color:rgba(160,180,195,.24);color:var(--dim);background:transparent}
.result-line{
  text-align:center;font-size:13.5px;color:#b9cddb;margin-bottom:20px;
  min-height:1.7em;
}
.factors{display:grid;gap:9px;margin-bottom:18px}
.factor{display:grid;grid-template-columns:58px 1fr 40px;align-items:center;gap:10px;font-size:12px}
.factor .fl{color:var(--dim)}
.factor .ft{height:5px;border-radius:99px;background:rgba(255,255,255,.07);overflow:hidden}
.factor .ff{
  display:block;height:100%;border-radius:99px;width:0;
  background:linear-gradient(90deg,#2ad4ff,#6ef2d0);
  transition:width .6s var(--ease);
  box-shadow:0 0 10px rgba(56,217,255,.5);
}
.factor.low .ff{background:linear-gradient(90deg,#ff8a6b,#ffc18a);box-shadow:0 0 10px rgba(255,140,100,.4)}
.factor .fv{font-family:var(--font-mono);font-size:11px;color:var(--dim-2);text-align:right}
.tips{display:grid;gap:8px;margin-bottom:16px}
.tip{
  display:flex;gap:10px;font-size:12.5px;color:#b9cddb;line-height:1.7;
  padding:10px 12px;border-radius:10px;background:rgba(255,255,255,.03);
  border-left:2px solid rgba(56,217,255,.35);
}
.tip b{color:var(--glow);font-weight:500;flex:0 0 auto}
.tip.warn-tip{border-left-color:rgba(255,140,100,.6);background:rgba(255,120,90,.05)}
.tip.warn-tip b{color:#ffab8d}
.disclaimer{font-size:11.5px;color:var(--dim-2);line-height:1.75;border-top:1px dashed rgba(126,214,255,.14);padding-top:12px}

.rank{margin-top:clamp(36px,5vw,54px)}
.rank h3{font-family:var(--font-serif);font-size:1.35rem;margin-bottom:8px}
.rank-sub{font-size:12.5px;color:var(--dim-2);margin-bottom:20px;max-width:60em}
.rank-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:6px 26px}
.rank-item{
  display:grid;grid-template-columns:22px 1fr 104px 46px;align-items:center;gap:10px;
  padding:9px 10px;border-radius:9px;font-size:13px;cursor:pointer;
  transition:background .2s;border-bottom:1px solid rgba(126,214,255,.06);
}
.rank-item:hover{background:rgba(255,255,255,.045)}
.rank-item .rn{font-family:var(--font-mono);font-size:10.5px;color:var(--dim-2)}
.rank-item .rt{color:#cbdeea;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.rank-item .rbar{height:4px;border-radius:99px;background:rgba(255,255,255,.07);overflow:hidden}
.rank-item .rbar i{
  display:block;height:100%;border-radius:99px;
  background:linear-gradient(90deg,#2ad4ff,#6ef2d0);
}
.rank-item .rp{font-family:var(--font-mono);font-size:12px;color:var(--glow);text-align:right}

.model{margin-top:34px;border-radius:var(--r-md);border:1px solid var(--line);background:rgba(255,255,255,.02)}
.model summary{
  cursor:pointer;padding:16px 20px;font-size:14px;color:#cfe6f2;list-style:none;
  display:flex;align-items:center;gap:10px;
}
.model summary::-webkit-details-marker{display:none}
.model summary::before{content:"▸";color:var(--glow);transition:transform .25s;display:inline-block}
.model[open] summary::before{transform:rotate(90deg)}
.model-body{padding:0 20px 22px;font-size:13.5px;color:#a9bfcd;line-height:1.85}
.model-body ul{margin:12px 0;padding-left:18px;display:grid;gap:6px}
.model-body li::marker{color:rgba(56,217,255,.6)}
.model-body b{color:#e2f4ff}

/* ---------- 图集 ---------- */
.gallery{column-count:3;column-gap:16px}
.shot{
  position:relative;margin:0 0 14px;border-radius:var(--r-md);overflow:hidden;cursor:zoom-in;
  border:1px solid rgba(126,214,255,.14);background:#071019;
  display:block;break-inside:avoid;
  transition:transform .4s var(--ease),border-color .3s,box-shadow .4s;
}
.shot::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,transparent 42%,rgba(3,8,13,.88) 100%);
  opacity:.9;transition:opacity .4s;
}
.shot:hover{transform:translateY(-4px);border-color:rgba(56,217,255,.45);box-shadow:0 22px 50px rgba(0,0,0,.5)}
.shot img{width:100%;height:auto;display:block;transition:transform .7s var(--ease),filter .5s;filter:saturate(1.05)}
.shot:hover img{transform:scale(1.05);filter:saturate(1.2) brightness(1.08)}
.shot figcaption{
  position:absolute;left:0;right:0;bottom:0;z-index:2;padding:18px 16px 14px;
  transform:translateY(6px);transition:transform .4s var(--ease);
}
.shot:hover figcaption{transform:none}
.shot figcaption b{display:block;font-family:var(--font-serif);font-size:1rem;color:#f2fbff;margin-bottom:3px}
.shot figcaption span{font-size:11.5px;color:rgba(200,225,240,.72);line-height:1.5;display:block}
.gal-note{margin-top:20px;font-size:12px;color:var(--dim-2);line-height:1.7}
.gal-note b{color:var(--dim)}

.lightbox{
  position:fixed;inset:0;z-index:80;display:none;place-items:center;
  background:rgba(2,6,10,.94);backdrop-filter:blur(10px);padding:5vh 5vw;
}
.lightbox.on{display:grid}
.lb-figure{margin:0;max-width:min(1200px,92vw);text-align:center}
.lb-figure img{
  max-height:82vh;width:auto;margin:0 auto;border-radius:10px;
  box-shadow:0 30px 90px rgba(0,0,0,.7);
  animation:lbin .35s var(--ease);
}
@keyframes lbin{from{opacity:0;transform:scale(.97)}to{opacity:1;transform:none}}
.lb-figure figcaption{margin-top:16px;font-size:13px;color:var(--dim);letter-spacing:.04em}
.lb-close,.lb-prev,.lb-next{
  position:absolute;background:rgba(255,255,255,.06);border:1px solid rgba(126,214,255,.2);
  color:#dff4ff;width:44px;height:44px;border-radius:50%;font-size:17px;cursor:pointer;
  display:grid;place-items:center;transition:background .2s,transform .2s;
}
.lb-close:hover,.lb-prev:hover,.lb-next:hover{background:rgba(56,217,255,.16);transform:scale(1.06)}
.lb-close{top:24px;right:24px}
.lb-prev{left:20px;top:50%;margin-top:-22px;font-size:22px}
.lb-next{right:20px;top:50%;margin-top:-22px;font-size:22px}

/* ---------- 页脚 ---------- */
.foot{
  padding:clamp(50px,7vw,80px) clamp(20px,5vw,42px) 40px;
  border-top:1px solid rgba(126,214,255,.1);
  background:linear-gradient(180deg,transparent,rgba(10,26,40,.5));
}
.foot-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:30px;margin-bottom:40px}
.foot h4{font-size:13px;letter-spacing:.14em;color:var(--glow);margin-bottom:12px;font-weight:500}
.foot p{font-size:12.5px;color:var(--dim-2);line-height:1.85}
.foot-bar{
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  padding-top:22px;border-top:1px solid rgba(126,214,255,.08);
  font-size:11.5px;color:var(--dim-2);letter-spacing:.06em;
}

/* ---------- 出现动画（仅在 JS 可用时隐藏，避免脚本失败导致内容不可见） ---------- */
.js .reveal{transition:opacity .9s var(--ease),transform .9s var(--ease)}
.js .reveal:not(.in){opacity:0;transform:translateY(20px)}
.js .sec-head,.js .cond,.js .sp-card,.js .shot,.js .map-panel,.js .spot-card,
.js .controls,.js .result,.js .golden,.js .warn,.js .note,.js .rank,.js .model,.js .split-media{
  transition:opacity .8s var(--ease),transform .8s var(--ease);
  opacity:0;transform:translateY(22px);
}
.js .in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1000px){
  .split,.species,.calc,.map-layout{grid-template-columns:1fr}
  .map-side{position:static;order:2}
  .map-layout{gap:18px}
  .gallery{column-count:2}
  .nav-links{
    position:absolute;top:100%;left:12px;right:12px;
    flex-direction:column;gap:2px;padding:10px;
    background:rgba(6,14,22,.96);backdrop-filter:blur(18px);
    border:1px solid var(--line);border-radius:14px;
    opacity:0;visibility:hidden;transform:translateY(-8px);
    transition:opacity .25s,transform .25s,visibility .25s;
  }
  .nav-links.open{opacity:1;visibility:visible;transform:none}
  .nav-links a{padding:11px 14px;border-radius:9px}
  .nav-toggle{display:block}
  .hero-foot .hero-note{display:none}
}
@media (max-width:640px){
  .hero-title{font-size:clamp(3.4rem,22vw,5.5rem)}
  .hero-inner{padding-top:96px}
  .ctl-row{grid-template-columns:1fr}
  .rank-list{grid-template-columns:1fr}
  .sc-facts{grid-template-columns:1fr}
  .sp-meta dt{flex-basis:68px}
  .sp-card{padding:22px}
  .gallery{column-count:2;column-gap:10px}
  .shot{margin-bottom:10px}
  .spot-list{max-height:none}
  .foot-bar{flex-direction:column}
  .m-only{display:block}
  .lb-prev,.lb-next{width:38px;height:38px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  html{scroll-behavior:auto}
}