@font-face{font-family:'Inter';src:url('/vendor/fonts/inter-latin-400.woff2') format('woff2');font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:'Inter';src:url('/vendor/fonts/inter-latin-500.woff2') format('woff2');font-weight:500;font-style:normal;font-display:swap}
@font-face{font-family:'JetBrains Mono';src:url('/vendor/fonts/jbmono-latin-400.woff2') format('woff2');font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:'JetBrains Mono';src:url('/vendor/fonts/jbmono-latin-600.woff2') format('woff2');font-weight:600;font-style:normal;font-display:swap}

:root{
  --bg:#ffffff; --surface:#f9fafb; --ink:#0a0a0a; --ink2:#52525b;
  --ink3:#9ca3af; --line:#e5e5e5; --line2:#d4d4d8;
  --up:#dc2626; --down:#16a34a;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:72px}
body{background:var(--bg);color:var(--ink);
  font-family:'Inter','PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',sans-serif;
  font-size:14px;line-height:1.65;-webkit-font-smoothing:antialiased}
.mono{font-family:'JetBrains Mono',ui-monospace,'SF Mono',Consolas,monospace;font-variant-numeric:tabular-nums}
.muted{color:var(--ink3)}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:60px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink)}
.logo-mark{width:34px;height:34px;background:var(--ink);color:#fff;display:flex;align-items:center;justify-content:center;font-family:'JetBrains Mono',monospace;font-size:13px;font-weight:600;border-radius:6px}
.logo-text{font-weight:500;font-size:16px;line-height:1.15;display:flex;flex-direction:column}
.logo-text small{font-size:9px;letter-spacing:.14em;color:var(--ink3);font-weight:400}
.nav{display:flex;gap:4px}
.nav a{color:var(--ink2);text-decoration:none;font-size:13px;padding:6px 10px;border-radius:4px;transition:.15s}
.nav a:hover{color:var(--ink);background:var(--surface)}
@media(max-width:820px){.nav{display:none}}

/* hero */
.hero{padding:44px 0 8px}
.hero-grid{display:grid;grid-template-columns:1fr 340px;gap:32px;align-items:end}
.hero h1{font-size:30px;font-weight:500;letter-spacing:-.01em;margin-bottom:10px}
.hero p{color:var(--ink2);max-width:560px}
.hero-meta{display:grid;grid-template-columns:1fr 1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line)}
.meta-item{background:#fff;padding:12px 14px;display:flex;flex-direction:column;gap:2px}
.meta-k{font-size:11px;color:var(--ink3)}
.meta-v{font-size:13px;font-weight:500}
.disclaimer-strip{margin-top:22px;border:1px solid var(--line);background:var(--surface);color:var(--ink2);font-size:12px;padding:8px 14px;border-radius:4px}
@media(max-width:820px){.hero-grid{grid-template-columns:1fr}.hero h1{font-size:24px}}

/* sections */
.section{padding:40px 0 8px}
.section-head{display:flex;align-items:baseline;justify-content:space-between;flex-wrap:wrap;gap:10px;margin-bottom:16px;border-bottom:1px solid var(--ink);padding-bottom:10px}
.section-head h2{font-size:18px;font-weight:500}
.section-sub{font-size:12px;color:var(--ink3)}
.section-note{font-size:12px;color:var(--ink2);margin-bottom:18px;max-width:860px}

/* cards / frames */
.card{background:#fff;border:1px solid var(--line)}
.price-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.price-card{background:#fff;padding:18px 18px 14px;min-height:118px}
.price-card .p-name{font-size:12px;color:var(--ink2);margin-bottom:8px;display:flex;justify-content:space-between}
.price-card .p-price{font-family:'JetBrains Mono',monospace;font-size:24px;font-weight:600;letter-spacing:-.02em}
.price-card .p-price small{font-size:11px;font-weight:400;color:var(--ink3);letter-spacing:0}
.price-card .p-chg{font-family:'JetBrains Mono',monospace;font-size:12px;margin-top:6px}
.price-card .p-unit{font-size:11px;color:var(--ink3)}
.up{color:var(--up)}.down{color:var(--down)}.flat{color:var(--ink3)}
@media(max-width:820px){.price-grid{grid-template-columns:1fr 1fr}}
@media(max-width:480px){.price-grid{grid-template-columns:1fr}}

/* skeleton */
.skeleton{pointer-events:none}
.sk{background:linear-gradient(90deg,#f4f4f5 25%,#e9e9eb 50%,#f4f4f5 75%);background-size:200% 100%;animation:sk 1.2s infinite;border-radius:3px}
@keyframes sk{0%{background-position:200% 0}100%{background-position:-200% 0}}
.sk-lg{width:60%;height:26px;margin-bottom:12px}
.sk-md{width:35%;height:14px}

/* tabs & buttons */
.tabs{display:flex;gap:1px;background:var(--line);border:1px solid var(--line)}
.tab{background:#fff;border:none;padding:6px 14px;font-size:13px;color:var(--ink2);cursor:pointer;font-family:inherit;transition:.15s}
.tab:hover{color:var(--ink)}
.tab.active{background:var(--ink);color:#fff}
.rbtn{background:#fff;border:1px solid var(--line);border-left:none;padding:4px 12px;font-size:12px;color:var(--ink2);cursor:pointer;font-family:inherit}
.rbtn:first-child{border-left:1px solid var(--line)}
.rbtn.active{background:var(--surface);color:var(--ink);font-weight:500}
.range-btns{display:flex}

/* chart */
.chart-card{padding:14px 16px 10px}
.chart-toolbar{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px;margin-bottom:8px}
.chart-title{font-size:12px;color:var(--ink2)}
.chart-box{height:380px;width:100%}
.chart-caption{font-size:11px;color:var(--ink3);padding:6px 2px 4px;border-top:1px solid var(--line);margin-top:6px}
.chart-stats{display:flex;flex-wrap:wrap;gap:1px;background:var(--line);border:1px solid var(--line);border-top:none;margin:0 -16px -10px;padding:0}
.cstat{background:#fff;flex:1;min-width:120px;padding:10px 14px}
.cstat .k{font-size:11px;color:var(--ink3)}
.cstat .v{font-family:'JetBrains Mono',monospace;font-size:14px;font-weight:500}
@media(max-width:640px){.chart-box{height:280px}}

/* forecast */
.fc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.fc-card{background:#fff;padding:16px 18px}
.fc-head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:12px}
.fc-period{font-size:13px;font-weight:500}
.fc-target{font-size:11px;color:var(--ink3)}
.fc-prob{display:flex;align-items:baseline;gap:8px;margin-bottom:12px}
.fc-prob-num{font-family:'JetBrains Mono',monospace;font-size:30px;font-weight:600;letter-spacing:-.02em}
.fc-prob-label{font-size:11px;color:var(--ink3)}
.band{position:relative;height:26px;margin:4px 0 10px}
.band .b-outer{position:absolute;top:9px;left:0;right:0;height:8px;background:var(--surface);border:1px solid var(--line)}
.band .b-inner{position:absolute;top:11px;height:4px;background:var(--line2)}
.band .b-mid{position:absolute;top:6px;width:2px;height:14px;background:var(--ink)}
.band .b-cur{position:absolute;top:0;width:1px;height:26px;background:var(--up)}
.fc-vals{display:flex;justify-content:space-between;font-size:11px;color:var(--ink2)}
.fc-vals b{font-family:'JetBrains Mono',monospace;font-weight:600;color:var(--ink);display:block;font-size:12px}
.fc-foot{margin-top:12px;padding-top:10px;border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:center}
.fc-model{font-size:10px;color:var(--ink3)}
.trend-tag{font-size:11px;padding:2px 8px;border:1px solid var(--line);color:var(--ink2);background:var(--surface)}
.trend-tag.up{border-color:var(--up);color:var(--up);background:#fef2f2}
.trend-tag.down{border-color:var(--down);color:var(--down);background:#f0fdf4}
@media(max-width:900px){.fc-grid{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.fc-grid{grid-template-columns:1fr}}

/* table */
.table-card{padding:0;overflow-x:auto}
.hit-table{width:100%;border-collapse:collapse;font-size:13px}
.hit-table th{font-weight:500;text-align:left;padding:12px 16px;background:var(--surface);border-bottom:1px solid var(--line);white-space:nowrap}
.hit-table td{padding:12px 16px;border-bottom:1px solid var(--line);white-space:nowrap}
.hit-table tr:last-child td{border-bottom:none}
.hit-table .empty{text-align:center;color:var(--ink3);padding:28px}
.hit-table td.mono-cell{font-family:'JetBrains Mono',monospace}

/* about */
.about-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.about-card{background:#fff;padding:18px}
.about-card h3{font-size:13px;font-weight:500;margin-bottom:10px;padding-bottom:8px;border-bottom:1px solid var(--line)}
.about-card ul{list-style:none}
.about-card li{font-size:12px;color:var(--ink2);padding:5px 0;border-bottom:1px dashed var(--line)}
.about-card li:last-child{border-bottom:none}
.about-card .muted{font-size:12px}
@media(max-width:820px){.about-grid{grid-template-columns:1fr}}

/* footer */
.site-footer{margin-top:56px;border-top:1px solid var(--line);padding:20px 0 32px}
.footer-inner{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;font-size:12px;color:var(--ink2)}