/* JEWEL4D — 珠宝盒开光 jewelbox hero + 卡片流. 宝库蓝 #101B33 × 珠光青 #66E0FF */
:root{
  --bg:#0A1122;--panel:#101B33;--panel2:#16254A;--text:#E6EFFC;--muted:#8FA5C8;
  --neon:#66E0FF;--gem:#B489F0;--glow:0 0 12px rgba(102,224,255,.4),0 0 28px rgba(102,224,255,.18);
  --grad-panel:linear-gradient(150deg,#16254A 0%,#0A1122 100%);
  --font-h:'Cormorant Infant',serif;--font-b:'Newsreader',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(--neon);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(10,17,34,.92);backdrop-filter:blur(10px);border-bottom:1px solid rgba(102,224,255,.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:1.35rem;color:var(--text);white-space:nowrap}
.brand:hover{text-decoration:none}
.nav-desktop{display:none;margin-left:auto;gap:18px}
.nav-desktop a{color:var(--muted);font-size:.95rem}
.nav-desktop a:hover{color:var(--neon);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-h);font-weight:700;font-size:1rem;cursor:pointer;border:1px solid transparent;transition:transform .15s}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-primary{background:linear-gradient(135deg,#66E0FF,#3FB9DE);color:#0A1122;box-shadow:var(--glow)}
.btn-secondary{background:transparent;color:var(--neon);border-color:rgba(102,224,255,.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(102,224,255,.4)}50%{box-shadow:0 0 22px rgba(102,224,255,.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(--neon);border-radius:2px}
.m-nav{display:none;background:var(--panel);border-bottom:1px solid rgba(102,224,255,.3)}
.m-nav-group{padding:10px 16px}
.m-nav-group h3{font-family:var(--font-h);font-size:.85rem;text-transform:uppercase;letter-spacing:.08em;color:var(--neon);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}
/* jewelbox hero */
.jewel-hero{padding:44px 0 10px}
.jewelbox{position:relative;background:var(--grad-panel);border:1px solid rgba(102,224,255,.5);border-radius:18px;overflow:hidden;box-shadow:var(--glow)}
.box-lid{height:14px;background:repeating-linear-gradient(90deg,#16254A 0 26px,#1B2C58 26px 52px);border-bottom:2px solid rgba(102,224,255,.6)}
.box-body{padding:40px 24px 30px;text-align:center;position:relative}
.box-body::before{content:"";position:absolute;inset:auto 0 60%;height:70%;background:radial-gradient(ellipse at 50% 100%,rgba(102,224,255,.22),transparent 70%);pointer-events:none}
.box-body h1{font-family:var(--font-h);font-size:clamp(2.4rem,7vw,3.8rem);letter-spacing:.06em;text-shadow:0 0 24px rgba(102,224,255,.45)}
.hero-sub{max-width:620px;margin:12px auto 20px;color:var(--muted)}
.hero-cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.gem-tray{display:flex;gap:14px;justify-content:center;padding:0 24px 26px}
.gem{width:34px;height:34px;background:linear-gradient(135deg,#1B2C58,#101B33);border:1px solid rgba(143,165,200,.4);transform:rotate(45deg);border-radius:6px}
.gem-on{background:linear-gradient(135deg,#66E0FF,#B489F0);border-color:#66E0FF;box-shadow:0 0 14px rgba(102,224,255,.6)}
.hero-note{text-align:center;color:var(--muted);font-size:.82rem;padding:10px 16px 0}
.section{padding:38px 0}
.section-alt{background:rgba(16,27,51,.55)}
.sec-title{font-family:var(--font-h);font-size:1.7rem;margin-bottom:18px;text-align:center}
.sec-sub{text-align:center;color:var(--muted);font-size:.9rem;margin:-10px 0 16px}
.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(102,224,255,.35);border-radius:14px;padding:18px;color:var(--text);transition:border-color .15s,box-shadow .15s}
.glow-card:hover{border-color:var(--neon);box-shadow:var(--glow);text-decoration:none}
.glow-card h3{font-family:var(--font-h);font-size:1.15rem;margin-bottom:6px;color:var(--neon)}
.glow-card p{color:var(--muted);font-size:.95rem}
.nc-icon{font-size:1.5rem;display:block;margin-bottom:8px}
/* badge wall (lencana) */
.badge-wall{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));margin:16px 0 8px}
.badge-card{background:var(--grad-panel);border:1px solid rgba(102,224,255,.3);border-radius:14px;padding:18px 14px;text-align:center}
.badge-card h3{font-family:var(--font-h);font-size:1.02rem;color:var(--text);margin:10px 0 4px}
.badge-card p{color:var(--muted);font-size:.85rem}
.badge-gem{display:inline-block;width:40px;height:40px;border-radius:8px;transform:rotate(45deg);background:linear-gradient(135deg,#1B2C58,#101B33);border:1px solid rgba(143,165,200,.4);margin:8px 0 12px}
.badge-gem.b-on{background:linear-gradient(135deg,#66E0FF,#B489F0);border-color:#66E0FF;box-shadow:0 0 16px rgba(102,224,255,.55)}
/* currency compare + progress bar demo */
.cur-grid{display:grid;gap:14px;margin:16px 0;grid-template-columns:1fr}
.pb-demo{margin:16px 0}
.pb-row{display:flex;align-items:center;gap:12px;padding:8px 0}
.pb-label{font-size:.88rem;color:var(--muted);width:104px;flex:none}
.pb-track{flex:1;height:10px;border-radius:99px;background:rgba(102,224,255,.14);overflow:hidden}
.pb-track i{display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,#66E0FF,#B489F0)}
.pb-val{font-size:.82rem;color:var(--neon);flex:none}
.flow{margin:16px 0;padding:20px;display:block}
.flow>*{border-radius:10px;padding:11px 14px;margin-bottom:9px;font-size:.95rem;background:rgba(10,17,34,.55);border:1px solid rgba(102,224,255,.35)}
.flow-step strong{color:var(--neon)}
.flow-end{border:1px dashed rgba(102,224,255,.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-size:clamp(1.7rem,4.5vw,2.3rem)}
.prose h2{font-family:var(--font-h);font-size:1.5rem;margin:26px 0 10px}
.prose h3{font-family:var(--font-h);font-size:1.2rem;margin:20px 0 8px;color:var(--neon)}
.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(--neon)}
.quick-form{display:grid;gap:8px;max-width:360px;margin:12px 0}
.quick-form label{font-size:.85rem;color:var(--muted)}
.quick-form input{background:#0A1122;border:1px solid rgba(102,224,255,.4);border-radius:8px;padding:10px 12px;color:var(--text);font-family:var(--font-b)}
.quick-form input:focus{outline:none;border-color:var(--neon)}
.kamus-grid{display:grid;gap:10px;margin:14px 0}
.kamus-item{background:var(--grad-panel);border:1px solid rgba(102,224,255,.3);border-radius:10px;overflow:hidden}
.kamus-item summary{cursor:pointer;padding:13px 16px;font-weight:600;list-style:none;position:relative}
.kamus-item summary::-webkit-details-marker{display:none}
.kamus-item summary::after{content:"+";position:absolute;right:16px;color:var(--neon)}
.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(--neon);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(--neon)}
.site-footer{background:var(--panel);border-top:1px solid rgba(102,224,255,.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-family:var(--font-h);font-size:.95rem;text-transform:uppercase;letter-spacing:.08em;color:var(--neon);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(--neon);text-decoration:none}
.pill-18{display:inline-block;border:1px solid var(--neon);color:var(--neon);border-radius:999px;padding:2px 12px;font-weight:700;font-size:.85rem}
.foot-bottom{margin-top:24px;padding-top:16px;border-top:1px solid rgba(102,224,255,.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;align-items:center;justify-content:center;gap:12px;max-width:calc(100vw - 24px);padding:10px 16px;background:rgba(10,17,34,.94);backdrop-filter:blur(8px);border:1px solid rgba(102,224,255,.5);border-radius:14px;box-shadow:0 0 18px rgba(102,224,255,.22)}
.float-cta-text{font-family:var(--font-h);font-weight:700;color:var(--neon);white-space:nowrap;text-shadow:0 0 12px rgba(102,224,255,.55)}
.float-cta .btn{white-space:nowrap;animation:cta-blink 1.6s ease-in-out infinite}
@keyframes cta-blink{0%,100%{box-shadow:0 0 8px rgba(102,224,255,.45);transform:scale(1)}50%{box-shadow:0 0 24px rgba(102,224,255,.95),0 0 42px rgba(180,137,240,.4);transform:scale(1.04)}}
@media (min-width:768px){
  .grid-3{grid-template-columns:repeat(3,1fr)}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .cur-grid{grid-template-columns:1fr 1fr}
  .foot-grid{grid-template-columns:2fr 1fr 1fr 1fr}
  .nav-desktop{display:flex}
  .header-cta{margin-left:0}
  .burger{display:none}
  .m-nav{display:none!important}
}
@media (min-width:1024px){.grid-4{grid-template-columns:repeat(4,1fr)}}
@media (prefers-reduced-motion:reduce){.pulse,.float-cta .btn{animation:none}}