*{margin:0;padding:0;box-sizing:border-box}
:root{--navy:#0A1C4E;--deep:#071233;--cyan:#00D4FF;--blue:#3B8CFF;--gold:#FFC14D;--text:#EAF2FF;--muted:#9BB0D9}
body{font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;background:var(--deep);color:var(--text);line-height:1.75;font-size:16px}
a{color:#5EE6FF;text-decoration:none}
.container{max-width:1180px;margin:0 auto;padding:0 24px}
nav{position:sticky;top:0;background:rgba(7,18,51,.95);backdrop-filter:blur(10px);border-bottom:1px solid rgba(255,255,255,.06);z-index:99}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800}
.logo-box{width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,#0a84ff,#00d4ff);display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:900}
.nav-links{display:flex;gap:26px;font-size:15px}
.nav-links a{color:var(--muted)}
.nav-links a:hover{color:#5EE6FF}
main{padding:60px 0}
h1{font-size:40px;font-weight:900;line-height:1.3;margin:14px 0 18px}
h2{font-size:28px;font-weight:800;margin:44px 0 14px;padding-bottom:10px;border-bottom:1px solid rgba(255,255,255,.08)}
h3{font-size:19px;font-weight:700;margin:22px 0 8px;color:#fff}
.tag{display:inline-block;padding:5px 14px;border:1px solid rgba(0,212,255,.5);border-radius:18px;color:#5EE6FF;font-size:13px;letter-spacing:1px}
.answer-box{background:rgba(0,212,255,.08);border-left:4px solid var(--cyan);padding:20px 24px;border-radius:0 10px 10px 0;margin:22px 0;font-size:17px}
.answer-box strong{color:#fff}
.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:16px}
.breadcrumb a{color:var(--muted)}
table{width:100%;border-collapse:collapse;margin:18px 0;font-size:14.5px}
th,td{padding:12px 14px;border:1px solid rgba(255,255,255,.1);text-align:left}
th{background:rgba(0,212,255,.1);color:#fff;font-weight:700}
td{color:var(--muted)}
td:first-child{color:#cfe0ff}
.grid{display:grid;gap:20px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{padding:24px;border:1px solid rgba(255,255,255,.08);border-radius:12px;background:rgba(255,255,255,.03)}
.card h3{margin-top:0}
.card p{color:var(--muted);font-size:14.5px}
.price{margin-top:12px;color:var(--gold);font-weight:700;font-size:14px}
/* 整卡可点：链接铺满卡片，标题/描述/价格均可点击跳转 */
.card-link{display:block;position:relative;padding:24px;border:1px solid rgba(255,255,255,.08);border-radius:12px;background:rgba(255,255,255,.03);color:inherit;text-decoration:none;transition:border-color .18s ease,background .18s ease,transform .18s ease}
.card-link:hover{border-color:rgba(0,212,255,.55);background:rgba(0,212,255,.07);transform:translateY(-3px)}
.card-link:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
.card-link h3{margin-top:0}
.card-link h3 a{color:#7FE9FF;text-decoration:none;background-image:linear-gradient(currentColor,currentColor);background-size:0 1px;background-repeat:no-repeat;background-position:0 100%;transition:background-size .18s ease}
.card-link:hover h3 a{background-size:100% 1px}
.card-link p{color:var(--muted);font-size:14.5px}
.card-link .price{margin-top:12px;color:var(--gold);font-weight:700;font-size:14px}
.card-link .go{margin-top:14px;display:inline-flex;align-items:center;gap:6px;color:var(--cyan);font-size:13.5px;font-weight:600}
.card-link .go::after{content:"\2192";transition:transform .18s ease}
.card-link:hover .go::after{transform:translateX(4px)}
@media(prefers-reduced-motion:reduce){.card-link{transition:none}.card-link:hover{transform:none}.card-link:hover .go::after{transform:none}}
.faq details{border:1px solid rgba(255,255,255,.08);border-radius:10px;padding:16px 20px;margin-bottom:12px;background:rgba(255,255,255,.03)}
.faq summary{font-weight:700;color:#fff;cursor:pointer;list-style:none}
.faq summary::before{content:"+ ";color:#5EE6FF}
.faq details[open] summary::before{content:"− "}
.faq details p{margin-top:10px;color:var(--muted);font-size:14.5px}
.btn{display:inline-block;padding:12px 28px;border-radius:24px;font-weight:700;margin:10px 10px 0 0}
.btn-primary{background:linear-gradient(90deg,#00D4FF,#3B8CFF);color:#071233}
.btn-ghost{border:1px solid rgba(0,212,255,.5);color:#5EE6FF}
.nap{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);border-radius:12px;padding:22px;margin:20px 0;font-size:14.5px}
.nap p{margin:6px 0}
.nap b{color:#fff}
.cta{margin-top:44px;padding:28px;border-radius:14px;background:linear-gradient(135deg,rgba(0,212,255,.12),rgba(59,140,255,.08));border:1px solid rgba(0,212,255,.25);text-align:center}
.pain{border-left:3px solid #ff6b6b;padding:18px 20px;background:rgba(255,107,107,.05);border-radius:0 10px 10px 0}
.pain b{color:#ffb4b4;display:block;margin-bottom:6px;font-size:16px}
.pain p{color:var(--muted);font-size:14px;margin:0}
.solved-row td:first-child{color:#ffb4b4}
.solved-row td:last-child{color:#a8f0d0}
.price-big{font-size:26px;color:var(--gold);font-weight:900;margin:8px 0}
.price-big small{font-size:14px;color:var(--muted);font-weight:400;margin-left:6px}
.related{display:flex;gap:12px;flex-wrap:wrap;margin:16px 0}
.related a{padding:10px 18px;border:1px solid rgba(0,212,255,.35);border-radius:22px;font-size:14px;color:#9fdfff}
.related a:hover{background:rgba(0,212,255,.1)}
footer{padding:34px 0;border-top:1px solid rgba(255,255,255,.08);text-align:center;color:var(--muted);font-size:13px}
footer a{color:#5EE6FF;margin:0 6px}
@media(max-width:820px){h1{font-size:28px}h2{font-size:22px}.grid-3,.grid-2{grid-template-columns:1fr}.nav-links{display:none}}