:root{--color-paper:#f4f1ec;--color-cream:#fbfaf7;--color-ink:#141416;--color-ink-soft:#3f3f46;--color-muted:#6b6b73;--color-line:#e4e0d8;--color-brand:#e50914;--color-brand-dark:#b20710;--color-brand-soft:#fde8e9;--color-night:#0c0c0e;--color-fog:#a1a1aa;--color-good:#0f7a43;--color-good-soft:#e6f6ec;--color-warn:#9a5b12;--color-warn-soft:#f8edd9;--font-sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",ui-sans-serif,system-ui,sans-serif;--shadow-card:0 0 0 1px rgba(20, 20, 22, 0.06),0 1px 2px rgba(20, 20, 22, 0.04),0 8px 24px rgba(20, 20, 22, 0.04)}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:5.5rem;-webkit-font-smoothing:antialiased}
body{background:var(--color-paper);color:var(--color-ink);font-family:var(--font-sans);line-height:1.6}
[role=button]:not(:disabled),button:not(:disabled){cursor:pointer}
h1,h2,h3,h4{text-wrap:balance;line-height:1.3}
::selection{background:var(--color-brand);color:#fff}
.container{max-width:1152px;margin:0 auto;padding:0 .5rem}
@media (min-width:640px){.container{padding:0 1.5rem}
}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.75rem 1.25rem;font-size:15px;font-weight:600;border-radius:8px;text-decoration:none;transition:all .15s;border:none;cursor:pointer}
.btn-primary{background:var(--color-brand);color:#fff;box-shadow:0 8px 20px rgba(229,9,20,.22)}
.btn-primary:hover{background:var(--color-brand-dark)}
.btn-outline{background:var(--color-cream);color:var(--color-ink);box-shadow:0 0 0 1px rgba(20,20,22,.12)}
.btn-outline:hover{background:#fff}
.card{background:var(--color-cream);border-radius:16px;box-shadow:var(--shadow-card);padding:1.5rem}
@media (min-width:640px){.card{padding:2rem}
}
.tag{display:inline-flex;padding:.25rem .625rem;border-radius:9999px;font-size:12px;font-weight:600}
.tag-good{background:var(--color-good-soft);color:var(--color-good)}
.tag-warn{background:var(--color-warn-soft);color:var(--color-warn)}
header{position:sticky;top:0;z-index:50;background:var(--color-night);border-bottom:1px solid rgba(255,255,255,.1);backdrop-filter:blur(12px)}
header .inner{display:flex;align-items:center;justify-content:space-between;height:56px}
@media (min-width:640px){header .inner{height:64px}
}
header .logo{display:flex;align-items:center;gap:.5rem;color:var(--color-cream);text-decoration:none;font-weight:600;font-size:15px}
header .logo-icon{display:grid;place-items:center;width:28px;height:28px;background:var(--color-brand);color:#fff;border-radius:6px;font-size:13px;font-weight:800}
header nav{display:none;gap:1.5rem}
@media (min-width:1024px){header nav{display:flex}
}
header nav a{color:var(--color-fog);text-decoration:none;font-size:13px;font-weight:500;transition:color .15s}
header nav a:hover{color:var(--color-cream)}
.menu-toggle{display:grid;place-items:center;width:40px;height:40px;background:0 0;border:none;color:var(--color-cream);border-radius:6px;cursor:pointer}
@media (min-width:1024px){.menu-toggle{display:none}
}
.mobile-menu{display:none;border-top:1px solid rgba(255,255,255,.1);background:var(--color-night);padding:1rem}
.mobile-menu.open{display:block}
@media (min-width:1024px){.mobile-menu{display:none!important}
}
.mobile-menu a{display:block;padding:.75rem;color:var(--color-cream);text-decoration:none;font-size:15px;border-radius:6px}
.mobile-menu .btn{margin-top:.5rem;width:100%}
.hero{padding-bottom:2rem;position:relative;overflow:hidden;background:var(--color-night);color:var(--color-cream);background-attachment:fixed;background-size:cover;background-position:center 20%}
.hero::before{content:'';position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(135deg,rgba(10,10,12,.6) 0,rgba(20,20,25,.7) 50%,rgba(10,10,12,.65) 100%);pointer-events:none}
.hero-content{position:relative;z-index:1}
.hero-badge{display:inline-flex;align-items:center;gap:.5rem;padding:.25rem .75rem;background:rgba(255,255,255,.08);border-radius:9999px;font-size:12px;font-weight:500;color:var(--color-fog);box-shadow:0 0 0 1px rgba(255,255,255,.08);margin-bottom:1.25rem}
.hero-badge-dot{width:6px;height:6px;background:var(--color-brand);border-radius:50%}
.hero h1{font-size:2.05rem;line-height:1.18;font-weight:600;max-width:48rem}
@media (min-width:640px){.hero h1{font-size:3rem;line-height:1.12}
}
.hero h1 .brand{color:var(--color-brand)}
.hero h1 .sub{display:block;margin-top:.5rem;font-weight:500;color:rgba(251,250,247,.9)}
.hero-desc{margin-top:1.25rem;font-size:16px;line-height:1.6;color:var(--color-fog)}
@media (min-width:640px){.hero-desc{font-size:18px}
}
.hero-desc strong{font-weight:600;color:var(--color-cream)}
.hero-actions{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:2rem}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:.75rem;margin-top:3.5rem;max-width:48rem;padding-top:2rem;border-top:1px solid rgba(255,255,255,.1);position:relative;z-index:1}
.hero-stats dt{font-size:18px;font-weight:600}
@media (min-width:640px){.hero-stats dt{font-size:24px}
}
.hero-stats dd{margin-top:.25rem;font-size:12px;color:var(--color-fog)}
@media (min-width:640px){.hero-stats dd{font-size:14px}
}
section{padding:3rem 0}
@media (min-width:640px){section{padding:4rem 0 0}
}
.section-head{margin-bottom:2rem;max-width:42rem}
.section-tag{font-size:12px;font-weight:600;color:var(--color-brand);text-transform:uppercase;letter-spacing:.05em}
.section-title{margin-top:.5rem;font-size:24px;font-weight:600}
@media (min-width:640px){.section-title{font-size:30px}
}
.section-desc{margin-top:.75rem;font-size:15px;line-height:1.6;color:var(--color-ink-soft)}
.prose p{margin-bottom:1rem;color:var(--color-ink-soft);line-height:1.85;font-size:17px}
.prose strong{color:var(--color-ink);font-weight:650}
.prose ul{margin:0 0 1.1rem;padding-left:1.2rem;list-style:disc}
.prose li{margin-bottom:.45rem;color:var(--color-ink-soft);line-height:1.75}
.grid{display:grid;gap:1rem}
.grid-2{grid-template-columns:repeat(1,1fr)}
@media (min-width:640px){.grid-2{grid-template-columns:repeat(2,1fr)}
}
.table-wrap{overflow-x:auto;border-radius:16px;box-shadow:var(--shadow-card);background:var(--color-cream)}
.table-wrap table{width:100%;border-collapse:collapse;min-width:640px}
.table-wrap td,.table-wrap th{padding:.85rem 1.1rem;text-align:left;border-bottom:1px solid var(--color-line);font-size:14px}
.table-wrap th{background:#efece6;font-weight:650;color:var(--color-ink);white-space:nowrap}
.table-wrap td{color:var(--color-ink-soft)}
.table-wrap tr:last-child td{border-bottom:none}
.table-wrap tbody tr:hover td{background:#f3efe8}
.table-wrap .hl td{background:#fff5f5}
footer{border-top:1px solid var(--color-line);background:var(--color-cream);padding:3.5rem 0 1.25rem}
footer .grid{gap:2.5rem}
@media (min-width:768px){footer .grid{grid-template-columns:repeat(4,1fr)}
footer .col-span-2{grid-column:span 2}
}
footer .footer-logo{display:flex;align-items:center;gap:.5rem;margin-bottom:.75rem;font-weight:600}
footer .footer-logo-icon{display:grid;place-items:center;width:28px;height:28px;background:var(--color-brand);color:#fff;border-radius:6px;font-size:13px;font-weight:800}
footer .footer-desc{max-width:28rem;font-size:14px;line-height:1.6;color:var(--color-muted)}
footer .footer-title{margin-bottom:.75rem;font-size:12px;font-weight:600;color:var(--color-muted);text-transform:uppercase;letter-spacing:.05em}
footer ul{list-style:none}
footer li{margin-bottom:.5rem}
footer a{color:var(--color-ink-soft);text-decoration:none;font-size:14px;transition:color .15s}
footer a:hover{color:var(--color-brand)}
footer .footer-bottom{display:flex;flex-direction:column;gap:.5rem;padding:1.25rem 0;margin-top:2rem;border-top:1px solid var(--color-line);font-size:12px;color:var(--color-muted)}
@media (min-width:640px){footer .footer-bottom{flex-direction:row;justify-content:space-between}
}
details{background:var(--color-cream);border-radius:12px;box-shadow:var(--shadow-card);margin-bottom:.5rem}
details summary{display:flex;align-items:center;justify-content:space-between;padding:1rem 1.25rem;font-size:15px;font-weight:600;cursor:pointer;list-style:none}
details summary::-webkit-details-marker{display:none}
details summary::after{content:'▼';font-size:12px;color:var(--color-brand);transition:transform .2s}
details[open] summary::after{transform:rotate(180deg)}
details p{padding:0 1.25rem 1.25rem;font-size:14px;line-height:1.6;color:var(--color-ink-soft)}
.alert{padding:1rem 1.25rem;border-radius:12px;border-left:4px solid;margin:1.5rem 0}
.alert-warn{background:var(--color-warn-soft);border-color:var(--color-warn)}
.alert-title{font-weight:600;margin-bottom:.25rem}
.alert p{margin:.25rem 0 0;font-size:14px;color:var(--color-ink-soft)}
.bottom-bar{position:fixed;bottom:0;left:0;right:0;z-index:40;background:rgba(251,250,247,.95);backdrop-filter:blur(12px);border-top:1px solid var(--color-line);padding:.75rem;display:flex;gap:.5rem}
@media (min-width:768px){.bottom-bar{display:none}
}
.bottom-bar .btn{flex:1;height:44px;padding:0;font-size:13px}
.pb-mobile{padding-bottom:5rem}
@media (min-width:768px){.pb-mobile{padding-bottom:0}
}
.mt-3{margin-top:.75rem}
.mt-4{margin-top:1rem}