:root{--ink:#21133f;--muted:#6e6582;--purple:#6f3cff;--purple2:#9b70ff;--line:#ded3ff;--paper:#fbf9ff;--warm:#ffcc71}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:linear-gradient(140deg,#fff7ef 0,#f8f4ff 38%,#eee8ff 100%);font-family:"Noto Sans SC","Microsoft YaHei",sans-serif;line-height:1.75}.geo-shell{width:min(1120px,calc(100% - 40px));margin:auto}.geo-header{height:76px;display:flex;align-items:center;justify-content:space-between;gap:28px}.geo-brand{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;font-size:22px;font-weight:800}.geo-brand img{width:38px;height:38px;border-radius:11px}.geo-nav{display:flex;align-items:center;gap:25px}.geo-nav a{color:#493b67;text-decoration:none;font-weight:600;font-size:14px}.geo-nav a:hover{color:var(--purple)}.geo-cta,.geo-button{display:inline-flex;align-items:center;justify-content:center;border-radius:999px;background:#170a36;color:#fff!important;padding:11px 22px;text-decoration:none;font-weight:700}.geo-hero{padding:90px 0 70px;display:grid;grid-template-columns:1.15fr .85fr;gap:70px;align-items:center}.geo-kicker{color:var(--purple);font-size:13px;font-weight:800;letter-spacing:.18em}.geo-hero h1{font-family:"Noto Serif SC","Songti SC",serif;font-size:clamp(42px,6vw,76px);line-height:1.08;margin:18px 0 24px;letter-spacing:-.04em}.geo-lead{font-size:19px;color:var(--muted);max-width:720px}.problem-stack{display:grid;gap:12px}.problem-stack span{padding:18px 22px;border:1px solid rgba(111,60,255,.25);background:rgba(255,255,255,.72);border-radius:18px;font-weight:700;box-shadow:0 14px 35px rgba(64,32,127,.08)}.problem-stack span:nth-child(even){transform:translateX(28px)}.geo-section{padding:72px 0}.section-head{max-width:760px;margin-bottom:34px}.section-head small{color:var(--purple);font-weight:800;letter-spacing:.14em}.section-head h2{font-size:clamp(30px,4vw,48px);line-height:1.2;margin:8px 0 12px}.section-head p{color:var(--muted)}.geo-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.geo-card{display:block;padding:28px;border:1px solid var(--line);border-radius:24px;background:rgba(255,255,255,.78);box-shadow:0 14px 40px rgba(73,42,136,.06);color:inherit;text-decoration:none}.geo-card b{display:block;font-size:21px;margin:8px 0}.geo-card p{margin:0;color:var(--muted)}.geo-card em{font-style:normal;color:var(--purple);font-size:13px;font-weight:800}.geo-card:hover{transform:translateY(-3px);border-color:var(--purple2)}.article{max-width:860px;margin:55px auto 90px}.article h1{font:800 clamp(36px,6vw,64px)/1.15 "Noto Serif SC","Songti SC",serif}.article h2{font-size:28px;margin-top:48px}.article h3{font-size:20px;margin-top:30px}.article p,.article li{color:#55496c}.article .summary{font-size:19px;padding:24px 28px;border-left:4px solid var(--purple);background:#fff;border-radius:0 18px 18px 0}.article table{width:100%;border-collapse:collapse;background:#fff}.article th,.article td{padding:14px;border:1px solid var(--line);text-align:left}.notice{padding:20px 24px;background:#fff7e8;border:1px solid #ffd598;border-radius:18px}.faq-list details{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px 22px;margin:12px 0}.faq-list summary{font-weight:800;cursor:pointer}.geo-footer{border-top:1px solid var(--line);padding:34px 0 46px;color:var(--muted)}.geo-footer .geo-shell{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}.geo-footer a{color:var(--muted);margin-right:18px}.tag{display:inline-block;padding:5px 10px;background:#eee7ff;color:var(--purple);border-radius:999px;font-size:12px;font-weight:700}@media(max-width:760px){.geo-shell{width:min(100% - 28px,1120px)}.geo-header{height:auto;padding:16px 0}.geo-nav{display:none}.geo-hero{grid-template-columns:1fr;padding:58px 0 42px;gap:38px}.geo-grid{grid-template-columns:1fr}.problem-stack span:nth-child(even){transform:none}.geo-section{padding:48px 0}.article{margin-top:35px}.article table{font-size:13px}.geo-cta{padding:9px 16px}}