/* METRO4D — 地铁线路网 transit-map hero + 卡片流. 炭蓝 #101B24 × 线路天蓝 #5CB8FF */
:root{
  --bg:#101B24;--panel:#16242F;--panel2:#1B2D3B;--text:#EEF4FA;--muted:#9FB4C7;
  --blue:#5CB8FF;--blue-deep:#2E7CC4;--amber:#F5B841;--coral:#FF7A6B;
  --glow:0 0 12px rgba(92,184,255,.4),0 0 26px rgba(92,184,255,.18);
  --grad-panel:linear-gradient(150deg,#1B2D3B 0%,#101B24 100%);
  --font-h:'Oxanium',sans-serif;--font-b:'Red Hat Text',sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-family:var(--font-b);line-height:1.7;font-size:16px}
img,svg{max-width:100%;vertical-align:middle}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
.container{width:100%;max-width:1160px;margin:0 auto;padding:0 16px}
.container.narrow{max-width:840px}
.center{text-align:center}
.site-header{position:sticky;top:0;z-index:50;background:rgba(16,27,36,.92);backdrop-filter:blur(10px);border-bottom:1px solid rgba(92,184,255,.35)}
.header-in{display:flex;align-items:center;gap:14px;min-height:60px}
.brand{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-h);font-weight:700;font-size:1.15rem;color:var(--text);white-space:nowrap;letter-spacing:.05em}
.brand:hover{text-decoration:none}
.nav-desktop{display:none;margin-left:auto;gap:18px}
.nav-desktop a{color:var(--muted);font-weight:600;font-size:.95rem}
.nav-desktop a:hover{color:var(--blue);text-decoration:none}
.header-cta{display:flex;gap:8px;margin-left:auto}
.nav-desktop+.header-cta{margin-left:0}
.btn{display:inline-block;padding:10px 20px;border-radius:10px;font-family:var(--font-b);font-weight:700;font-size:.9rem;cursor:pointer;border:1px solid transparent;transition:transform .15s}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-primary{background:linear-gradient(135deg,#5CB8FF,#2E7CC4);color:#0B141C;box-shadow:var(--glow)}
.btn-secondary{background:transparent;color:var(--blue);border-color:rgba(92,184,255,.55)}
.btn-block{display:block;width:100%;text-align:center}
.pulse{animation:pulse-glow 2s infinite}
@keyframes pulse-glow{0%,100%{box-shadow:0 0 8px rgba(92,184,255,.4)}50%{box-shadow:0 0 22px rgba(92,184,255,.85)}}
.nav-toggle{display:none}
.burger{display:flex;flex-direction:column;gap:4px;cursor:pointer;padding:6px;margin-left:4px}
.burger span{width:22px;height:2px;background:var(--blue);border-radius:2px}
.m-nav{display:none;background:var(--panel);border-bottom:1px solid rgba(92,184,255,.3)}
.m-nav-group{padding:10px 16px}
.m-nav-group h3{font-size:.8rem;text-transform:uppercase;letter-spacing:.08em;color:var(--blue);margin-bottom:6px;font-weight:700}
.m-nav-group a{display:block;padding:6px 0;color:var(--text)}
.nav-toggle:checked~.m-nav{display:block}
/* transit-map hero */
.metro-hero{padding:44px 0 6px;background:radial-gradient(60% 70% at 50% 0%,rgba(92,184,255,.16) 0%,rgba(16,27,36,0) 70%)}
.metro-head{text-align:center}
.metro-head h1{font-family:var(--font-h);font-weight:700;font-size:clamp(2.3rem,7vw,3.8rem);letter-spacing:.08em;text-shadow:0 2px 0 #1B4C77,0 0 26px rgba(92,184,255,.45)}
.hero-sub{max-width:640px;margin:12px auto 20px;color:var(--muted)}
.hero-cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.metro-map{position:relative;height:190px;margin:26px 0 0;overflow:hidden}
.mline{position:absolute;height:6px;border-radius:99px;transform-origin:center}
.mline-a{top:115px;left:0;width:100%;background:linear-gradient(90deg,rgba(92,184,255,.25),#5CB8FF 26%,#5CB8FF 74%,rgba(92,184,255,.25));box-shadow:0 0 14px rgba(92,184,255,.5)}
.mline-b{top:115px;left:-5%;width:110%;transform:rotate(-5.5deg);background:linear-gradient(90deg,rgba(245,184,65,.2),#F5B841 30%,#F5B841 70%,rgba(245,184,65,.2));box-shadow:0 0 12px rgba(245,184,65,.35)}
.mline-c{top:115px;left:-4%;width:108%;transform:rotate(4.5deg);background:linear-gradient(90deg,rgba(255,122,107,.2),#FF7A6B 30%,#FF7A6B 70%,rgba(255,122,107,.2));box-shadow:0 0 12px rgba(255,122,107,.35)}
.station{position:absolute;top:-5px;width:16px;height:16px;border-radius:50%;background:#0B141C;border:3px solid #EEF4FA;box-shadow:0 0 6px rgba(238,244,250,.35);z-index:2}
.hub{position:absolute;left:50%;top:118px;transform:translate(-50%,-50%);width:22px;height:22px;border-radius:50%;background:#0B141C;border:4px solid #5CB8FF;box-shadow:0 0 18px rgba(92,184,255,.9);z-index:4}
.train{position:absolute;top:-4px;width:14px;height:14px;border-radius:50%;z-index:3}
.t-a{background:radial-gradient(circle,#FFFFFF 0%,#5CB8FF 60%);box-shadow:0 0 16px 5px rgba(92,184,255,.9);animation:ride-a 7s linear infinite}
.t-b{background:radial-gradient(circle,#FFF6E0 0%,#F5B841 60%);box-shadow:0 0 14px 4px rgba(245,184,65,.85);animation:ride-b 9s linear infinite}
.t-c{background:radial-gradient(circle,#FFEAE6 0%,#FF7A6B 60%);box-shadow:0 0 14px 4px rgba(255,122,107,.85);animation:ride-c 8s linear infinite}
@keyframes ride-a{from{left:2%}to{left:96%}}
@keyframes ride-b{from{left:4%}to{left:94%}}
@keyframes ride-c{from{left:94%}to{left:4%}}
.track-stats{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin:6px 0 10px}
.ts{font-size:.78rem;letter-spacing:.06em;color:var(--blue);border:1px solid rgba(92,184,255,.4);border-radius:99px;padding:3px 14px;background:rgba(16,27,36,.6)}
.ts-warn{color:#FFE0A3;border-color:#F5B841}
.ts-coral{color:#FFC4BC;border-color:#FF7A6B}
.section{padding:38px 0}
.section-alt{background:rgba(22,36,47,.55)}
.sec-title{font-family:var(--font-h);font-weight:600;font-size:1.5rem;margin-bottom:18px;text-align:center;letter-spacing:.02em}
.sec-sub{color:var(--muted);text-align:center;max-width:640px;margin:-8px auto 18px;font-size:.92rem}
.grid-2,.grid-3,.grid-4{display:grid;gap:16px;grid-template-columns:1fr;margin-bottom:8px}
.glow-card{display:block;background:var(--grad-panel);border:1px solid rgba(92,184,255,.35);border-radius:14px;padding:18px;color:var(--text);transition:border-color .15s,box-shadow .15s}
.glow-card:hover{border-color:var(--blue);box-shadow:var(--glow);text-decoration:none}
.glow-card h3{font-size:1.05rem;margin-bottom:6px;color:var(--blue)}
.glow-card p{color:var(--muted);font-size:.92rem}
.nc-icon{font-size:1.5rem;display:block;margin-bottom:8px}
/* 特色板块: 公共场合自检清单 */
.safety-list{list-style:none;margin:14px 0;padding:0}
.safety-list li{position:relative;padding:11px 12px 11px 46px;background:rgba(16,27,36,.55);border:1px solid rgba(92,184,255,.3);border-radius:10px;margin-bottom:8px;font-size:.95rem}
.safety-list li::before{content:"✓";position:absolute;left:11px;top:14px;width:24px;height:24px;border-radius:50%;background:linear-gradient(135deg,#5CB8FF,#2E7CC4);color:#0B141C;font-weight:700;font-size:.85rem;display:flex;align-items:center;justify-content:center;box-shadow:0 0 10px rgba(92,184,255,.5)}
.trust-zone{display:flex;gap:14px;align-items:flex-start;border:1px dashed rgba(92,184,255,.45);border-radius:12px;padding:14px 16px;margin-top:14px}
.trust-zone p{margin:0;font-size:.92rem}
.flow{margin:16px 0;padding:20px;display:block}
.flow>*{border-radius:10px;padding:11px 14px;margin-bottom:9px;font-size:.95rem;background:rgba(16,27,36,.55);border:1px solid rgba(92,184,255,.35)}
.flow-step strong{color:var(--blue)}
.flow-end{border:1px dashed rgba(92,184,255,.5);color:var(--muted)}
.prose .note{color:var(--muted);font-size:.9rem}
.page-head{padding-top:22px}
.page-head h1,.prose h1{font-family:var(--font-h);font-weight:600;font-size:clamp(1.6rem,4.5vw,2.3rem);line-height:1.3}
.prose h2{font-family:var(--font-h);font-weight:600;font-size:1.4rem;margin:26px 0 10px}
.prose h3{font-size:1.08rem;font-weight:700;margin:20px 0 8px;color:var(--blue)}
.prose p{margin:0 0 14px}
.prose ul,.prose ol{margin:0 0 14px 22px}
.prose li{margin-bottom:6px}
.steps li{margin-bottom:10px}
.steps li strong{color:var(--blue)}
.two-col{display:grid;gap:18px;grid-template-columns:1fr;align-items:start}
.form-card{background:var(--grad-panel);border:1px solid rgba(92,184,255,.4);border-radius:16px;padding:24px;box-shadow:var(--glow)}
.form-card h2{margin-bottom:10px}
.form-note{color:var(--muted);font-size:.95rem;margin-bottom:14px}
.form-safe{color:var(--muted);font-size:.88rem;margin-top:12px}
.age-note{color:var(--muted);font-size:.9rem;border-left:3px solid var(--blue);padding-left:12px}
.kamus-grid{display:grid;gap:10px;margin:14px 0}
.kamus-item{background:var(--grad-panel);border:1px solid rgba(92,184,255,.3);border-radius:10px;overflow:hidden}
.kamus-item summary{cursor:pointer;padding:13px 16px;font-weight:700;list-style:none;position:relative}
.kamus-item summary::-webkit-details-marker{display:none}
.kamus-item summary::after{content:"+";position:absolute;right:16px;color:var(--blue)}
.kamus-item[open] summary::after{content:"−"}
.kamus-item p{padding:0 16px 14px;color:var(--muted);font-size:.95rem}
.err-wrap{padding:70px 16px}
.err-code{font-family:var(--font-h);font-size:5rem;color:var(--blue);text-shadow:var(--glow)}
.err-wrap .btn{margin:18px 0}
.crumbs{padding:12px 0 0;font-size:.82rem;color:var(--muted)}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px}
.crumbs li+li::before{content:"›";margin-right:6px;color:var(--blue)}
.site-footer{background:var(--panel);border-top:1px solid rgba(92,184,255,.35);padding:36px 0 92px;margin-top:30px}
.foot-grid{display:grid;gap:24px;grid-template-columns:1fr}
.foot-brand p{color:var(--muted);font-size:.9rem;margin:10px 0}
.foot-col h3{font-size:.85rem;text-transform:uppercase;letter-spacing:.08em;color:var(--blue);margin-bottom:8px;font-weight:700}
.foot-col a{display:block;color:var(--muted);padding:3px 0;font-size:.92rem}
.foot-col a:hover{color:var(--blue);text-decoration:none}
.pill-18{display:inline-block;border:1px solid var(--blue);color:var(--blue);border-radius:999px;padding:2px 12px;font-weight:700;font-size:.85rem;flex:none}
.foot-bottom{margin-top:24px;padding-top:16px;border-top:1px solid rgba(92,184,255,.25);color:var(--muted);font-size:.85rem}
.float-cta{position:fixed;left:50%;bottom:calc(12px + env(safe-area-inset-bottom));transform:translateX(-50%);z-index:60;display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:10px 12px;max-width:calc(100vw - 24px);padding:9px 10px 9px 16px;background:rgba(16,27,36,.94);backdrop-filter:blur(8px);border:1px solid rgba(92,184,255,.5);border-radius:14px;box-shadow:0 8px 22px rgba(0,0,0,.45),0 0 12px rgba(92,184,255,.4),0 0 26px rgba(92,184,255,.2)}
.float-cta-text{font-family:var(--font-h);font-weight:600;font-size:.95rem;color:var(--blue);white-space:nowrap;text-shadow:0 0 12px rgba(92,184,255,.5)}
.float-cta .btn{flex:none;white-space:nowrap;animation:cta-blink 1.6s ease-in-out infinite}
@keyframes cta-blink{
  0%,100%{box-shadow:0 0 8px rgba(92,184,255,.45);transform:scale(1)}
  50%{box-shadow:0 0 22px rgba(92,184,255,.95),0 0 44px rgba(92,184,255,.45);transform:scale(1.04)}
}
@media (max-width:767px){
  .header-in{gap:8px}
  .brand{font-size:1.05rem}
  .brand .logo-mark{width:26px;height:26px}
  .header-cta{gap:6px}
  .header-cta .btn{padding:8px 14px;font-size:.85rem}
  .burger{padding:5px}
}
@media (min-width:768px){
  .grid-2{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(3,1fr)}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:2fr 1fr 1.4fr 1fr}
  .nav-desktop{display:flex}
  .header-cta{margin-left:0}
  .burger{display:none}
  .m-nav{display:none!important}
}
@media (min-width:900px){.two-col{grid-template-columns:1.1fr .9fr}}
@media (min-width:1024px){.grid-4{grid-template-columns:repeat(4,1fr)}}
@media (prefers-reduced-motion:reduce){.pulse,.train,.float-cta .btn{animation:none}}

/* ===== Float CTA Jackpot v2 (2026-09-13): 底部居中 + 闪烁 ===== */
.float-cta{left:50%;right:auto;transform:translateX(-50%);width:100%;max-width:600px;margin:0;display:block}
.float-inner{display:flex;align-items:center;justify-content:center;gap:12px;flex-wrap:wrap}
.jackpot-tag{display:inline-flex;align-items:center;gap:6px;font-weight:800;font-size:1rem;letter-spacing:.02em;color:#FFE066;text-shadow:0 0 10px rgba(255,224,102,.6)}
.jackpot-blink{animation:jackpot-blink 1.1s ease-in-out infinite}
@keyframes jackpot-blink{0%,100%{opacity:1;text-shadow:0 0 10px rgba(255,224,102,.85),0 0 22px rgba(255,224,102,.45)}50%{opacity:.5;text-shadow:0 0 4px rgba(255,224,102,.3)}}
.masuk-btn{position:relative;overflow:hidden;white-space:nowrap;flex:0 0 auto;font-weight:800;letter-spacing:.02em;animation:masuk-glow 1.4s ease-in-out infinite}
.masuk-btn::after{content:"";position:absolute;top:0;left:-80%;width:55%;height:100%;background:linear-gradient(105deg,rgba(255,255,255,0) 0%,rgba(255,255,255,.55) 50%,rgba(255,255,255,0) 100%);transform:skewX(-20deg);animation:masuk-shine 1.8s linear infinite}
@keyframes masuk-shine{0%{left:-80%}55%,100%{left:130%}}
@keyframes masuk-glow{0%,100%{box-shadow:0 0 8px rgba(255,215,80,.55)}50%{box-shadow:0 0 24px rgba(255,215,80,.95),0 0 40px rgba(255,180,40,.5)}}
.jp-spark{display:inline-block;animation:spark-twinkle 1s ease-in-out infinite}
@keyframes spark-twinkle{0%,100%{transform:scale(1);opacity:1}50%{transform:scale(.55) rotate(18deg);opacity:.45}}
@media (prefers-reduced-motion:reduce){.jackpot-blink,.masuk-btn,.masuk-btn::after,.jp-spark{animation:none}}