:root{--bg:#0a0e24;--bg-soft:#0f1433;--panel:#141a3c;--panel-2:#1a2148;--line:rgba(255,255,255,.09);--line-2:rgba(255,255,255,.16);--text:#edf0ff;--muted:#9aa2c8;--primary:#4c7dff;--violet:#8a5cff;--accent:#00e5c0;--amber:#ffc24b;--pink:#ff5c8a;--radius:16px;--serif:Georgia,'Times New Roman','Songti SC',serif;--sans:system-ui,-apple-system,'PingFang SC','Microsoft YaHei','Segoe UI',sans-serif}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-family:var(--sans);line-height:1.7;overflow-x:hidden;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-head{text-align:center;max-width:720px;margin:0 auto 52px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);font-weight:600}
.eyebrow svg{width:14px;height:14px}
.h2{font-family:var(--serif);font-size:clamp(28px,4vw,40px);line-height:1.25;margin:14px 0 14px;font-weight:700}
.lead{color:var(--muted);font-size:16px}
.grad-text{background:linear-gradient(120deg,var(--primary),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 28px;border-radius:999px;font-weight:600;font-size:15px;cursor:pointer;border:1px solid transparent;transition:.25s;white-space:nowrap}
.btn svg{width:18px;height:18px}
.btn-primary{background:linear-gradient(120deg,var(--primary),var(--violet));color:#fff;box-shadow:0 10px 30px rgba(76,125,255,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 40px rgba(76,125,255,.5)}
.btn-accent{background:linear-gradient(120deg,#00e5c0,#00b3d9);color:#04222a}
.btn-accent:hover{transform:translateY(-2px)}
.btn-ghost{border-color:var(--line-2);color:var(--text);background:rgba(255,255,255,.03)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
header{position:sticky;top:0;z-index:100;background:rgba(10,14,36,.82);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px}
.brand img{width:34px;height:34px;border-radius:8px}
.brand small{display:block;font-size:11px;color:var(--muted);font-weight:500;letter-spacing:.06em}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-links a{color:var(--muted);font-size:14.5px;font-weight:500;position:relative;transition:.2s}
.nav-links a:hover,.nav-links a.active{color:var(--text)}
.nav-links a.active::after{content:'';position:absolute;left:0;right:0;bottom:-6px;height:2px;background:linear-gradient(90deg,var(--primary),var(--accent));border-radius:2px}
.nav-cta{display:flex;align-items:center;gap:12px}
.menu-toggle{display:none;background:none;border:none;color:var(--text);cursor:pointer}
.hero{position:relative;padding:90px 0 70px;overflow:hidden}
.hero::before{content:'';position:absolute;inset:0;background:radial-gradient(800px 400px at 70% 10%,rgba(76,125,255,.22),transparent 60%),radial-gradient(600px 360px at 20% 80%,rgba(138,92,255,.18),transparent 60%);pointer-events:none}
.hero-grid{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero h1{font-family:var(--serif);font-size:clamp(34px,5.2vw,56px);line-height:1.15;font-weight:700;margin:18px 0 20px}
.hero .sub{color:var(--muted);font-size:17px;max-width:520px;margin-bottom:30px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:28px}
.hero-stats{display:flex;gap:34px;flex-wrap:wrap}
.stat b{display:block;font-family:var(--serif);font-size:26px;color:var(--accent)}
.stat span{font-size:13px;color:var(--muted)}
.client{position:relative;border:1px solid var(--line-2);border-radius:20px;background:linear-gradient(160deg,var(--panel),var(--bg-soft));box-shadow:0 30px 80px rgba(0,0,0,.5);padding:20px;overflow:hidden}
.client-top{display:flex;align-items:center;gap:8px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.dot{width:11px;height:11px;border-radius:50%}
.client-body{padding:20px 4px 4px}
.conn-status{display:flex;align-items:center;justify-content:space-between;background:var(--bg-soft);border:1px solid var(--line);border-radius:14px;padding:14px 16px;margin-bottom:16px}
.conn-status .ping{font-size:13px;color:var(--muted)}
.conn-badge{display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--accent);font-weight:600}
.pulse{width:9px;height:9px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 0 rgba(0,229,192,.6);animation:pulse 1.6s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(0,229,192,.55)}70%{box-shadow:0 0 0 9px rgba(0,229,192,0)}100%{box-shadow:0 0 0 0 rgba(0,229,192,0)}}
.server-row{display:flex;align-items:center;justify-content:space-between;padding:11px 8px;border-radius:10px;transition:.2s}
.server-row:hover{background:var(--panel-2)}
.server-row .flag{width:26px;height:26px;border-radius:6px;background:linear-gradient(135deg,var(--primary),var(--violet));display:flex;align-items:center;justify-content:center;font-size:13px}
.server-row .name{font-size:14px}
.server-row .ms{font-size:13px;color:var(--accent);font-weight:600}
.speedbar{height:10px;border-radius:6px;background:var(--panel-2);overflow:hidden;margin-top:4px}
.speedbar i{display:block;height:100%;background:linear-gradient(90deg,var(--primary),var(--accent))}
.notice{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.notice-card{border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);padding:22px;transition:.25s}
.notice-card:hover{transform:translateY(-4px);border-color:var(--line-2)}
.notice-card .tag{font-size:12px;color:var(--accent);font-weight:600;letter-spacing:.06em;text-transform:uppercase}
.notice-card h3{font-size:16px;margin:8px 0 8px;font-family:var(--serif)}
.notice-card p{color:var(--muted);font-size:14px}
.notice-card a{color:var(--accent);font-size:13px;font-weight:600}
.dl-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.dl-card{border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);padding:26px 18px;text-align:center;transition:.25s;display:flex;flex-direction:column;align-items:center;gap:12px}
.dl-card:hover{transform:translateY(-6px);border-color:var(--accent);box-shadow:0 20px 50px rgba(0,0,0,.4)}
.dl-card .ico{width:56px;height:56px;border-radius:16px;background:linear-gradient(135deg,var(--panel-2),var(--bg-soft));display:flex;align-items:center;justify-content:center;color:var(--accent)}
.dl-card .ico svg{width:28px;height:28px}
.dl-card h3{font-size:15px}
.dl-card p{font-size:12px;color:var(--muted)}
.dl-card .btn{width:100%;padding:10px;font-size:13px}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feature{border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);padding:28px;transition:.25s}
.feature:hover{transform:translateY(-5px);border-color:var(--primary);background:var(--panel-2)}
.feature .ico{width:50px;height:50px;border-radius:14px;background:linear-gradient(135deg,rgba(76,125,255,.18),rgba(138,92,255,.18));display:flex;align-items:center;justify-content:center;color:var(--primary);margin-bottom:18px}
.feature .ico svg{width:26px;height:26px}
.feature h3{font-size:18px;font-family:var(--serif);margin-bottom:8px}
.feature p{color:var(--muted);font-size:14.5px}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:var(--panel)}
table{width:100%;border-collapse:collapse;min-width:640px}
th,td{padding:18px 20px;text-align:left;font-size:14.5px}
th{background:var(--panel-2);color:var(--text);font-family:var(--serif);font-size:16px}
td{border-top:1px solid var(--line);color:var(--muted)}
td:first-child{color:var(--text);font-weight:600}
.plan-name{font-size:16px;color:var(--text);font-weight:700}
.plan-price{font-family:var(--serif);font-size:22px;color:var(--accent);font-weight:700}
.plan-price small{font-size:12px;color:var(--muted);font-family:var(--sans);font-weight:400}
.check{color:var(--accent);font-weight:700}
.minus{color:var(--muted)}
.trust{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.trust-item{border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);padding:26px;text-align:center}
.trust-item b{display:block;font-family:var(--serif);font-size:30px;color:var(--accent)}
.trust-item span{font-size:13.5px;color:var(--muted)}
.news-tabs{display:flex;justify-content:center;gap:10px;margin-bottom:36px;flex-wrap:wrap}
.news-tab{padding:10px 22px;border-radius:999px;border:1px solid var(--line-2);background:transparent;color:var(--muted);cursor:pointer;font-size:14px;transition:.2s}
.news-tab.active,.news-tab:hover{background:linear-gradient(120deg,var(--primary),var(--violet));color:#fff;border-color:transparent}
.news-panel{display:none;grid-template-columns:repeat(4,1fr);gap:18px}
.news-panel.active{display:grid}
.news-card{border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);padding:20px;display:flex;flex-direction:column;gap:10px;transition:.25s}
.news-card:hover{transform:translateY(-5px);border-color:var(--primary)}
.news-card .cat{font-size:12px;color:var(--accent);font-weight:600;letter-spacing:.04em}
.news-card h3{font-size:15.5px;line-height:1.45;font-family:var(--serif)}
.news-card p{font-size:13.5px;color:var(--muted);flex:1}
.news-card .date{font-size:12px;color:var(--muted)}
.faq-list{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{border:1px solid var(--line);border-radius:14px;background:var(--panel);overflow:hidden}
.faq-q{width:100%;background:none;border:none;color:var(--text);padding:20px 22px;font-size:16px;font-weight:600;text-align:left;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px}
.faq-q .ico{color:var(--accent);transition:.25s;flex-shrink:0}
.faq-item.open .faq-q .ico{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:.3s}
.faq-a p{padding:0 22px 20px;color:var(--muted);font-size:14.5px}
.footer-cta{position:relative;text-align:center;padding:80px 0;overflow:hidden}
.footer-cta::before{content:'';position:absolute;inset:0;background:radial-gradient(600px 300px at 50% 120%,rgba(76,125,255,.25),transparent 70%);pointer-events:none}
.footer-cta h2{font-family:var(--serif);font-size:clamp(28px,4vw,40px);margin-bottom:16px}
.footer-cta .lead{margin-bottom:30px}
footer{border-top:1px solid var(--line);background:var(--bg-soft);padding:56px 0 28px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:36px;margin-bottom:40px}
.footer-grid h4{font-size:14px;margin-bottom:16px;color:var(--text)}
.footer-grid a{display:block;color:var(--muted);font-size:13.5px;margin-bottom:10px;transition:.2s}
.footer-grid a:hover{color:var(--accent)}
.footer-brand p{color:var(--muted);font-size:13.5px;margin-top:14px;max-width:280px}
.footer-bottom{border-top:1px solid var(--line);padding-top:24px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;color:var(--muted);font-size:12.5px}
@media(max-width:980px){.hero-grid{grid-template-columns:1fr}.dl-grid{grid-template-columns:repeat(2,1fr)}.feature-grid{grid-template-columns:repeat(2,1fr)}.trust{grid-template-columns:repeat(2,1fr)}.news-panel{grid-template-columns:repeat(2,1fr)}.notice{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:640px){.nav-links,.nav-cta .btn-ghost{display:none}.menu-toggle{display:block}.nav-links.open{display:flex;flex-direction:column;position:absolute;top:72px;left:0;right:0;background:var(--bg);border-bottom:1px solid var(--line);padding:20px 24px;gap:18px}.dl-grid,.feature-grid,.trust,.news-panel{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.hero{padding:60px 0 50px}}
.crumb{display:flex;gap:8px;font-size:13px;color:var(--muted);margin-bottom:18px;flex-wrap:wrap}
.crumb a:hover{color:var(--accent)}
.article{max-width:840px;margin:0 auto}
.article-head h1{font-family:var(--serif);font-size:clamp(26px,4vw,38px);line-height:1.3;margin:14px 0 18px}
.article-meta{display:flex;gap:20px;flex-wrap:wrap;color:var(--muted);font-size:13.5px;margin-bottom:26px;padding-bottom:22px;border-bottom:1px solid var(--line)}
.article-meta .cat{color:var(--accent);font-weight:600}
.article-cover{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);margin-bottom:30px}
.article-body{font-size:16px;line-height:1.9}
.article-body p{color:#cdd4ef;margin-bottom:22px}
.article-body h2{font-family:var(--serif);font-size:24px;margin:34px 0 14px;color:var(--text)}
.article-body img{border-radius:14px;border:1px solid var(--line);margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:-14px;margin-bottom:24px}
.pager{display:flex;justify-content:space-between;gap:14px;margin-top:44px;padding-top:26px;border-top:1px solid var(--line);flex-wrap:wrap}
.pager a{display:flex;flex-direction:column;gap:4px;max-width:46%}
.pager a span{font-size:12px;color:var(--muted)}
.pager a b{font-size:14.5px;color:var(--text);transition:.2s}
.pager a:hover b{color:var(--accent)}
.pager a.next{text-align:right}
.back-link{display:inline-flex;align-items:center;gap:8px;margin-top:30px;color:var(--accent);font-weight:600;font-size:14px}
.back-link:hover{text-decoration:underline}

/* ===== GEO 内容增强模块：答案前置 / 要点 / 数据表 / 问答 / 相关阅读 / 转化位 ===== */
.answer-box{border:1px solid var(--line-2);border-left:3px solid var(--accent);background:linear-gradient(180deg,rgba(0,229,192,.07),transparent);border-radius:var(--radius);padding:20px 22px;margin:0 0 26px}
.answer-box .answer-title{display:flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:.1em;color:var(--accent);font-weight:700;margin-bottom:10px}
.answer-box .answer-lead{font-size:16.5px;line-height:1.75;color:var(--text);margin:0 0 14px;font-weight:600}
.answer-box ul{margin:0;padding:0;list-style:none;display:grid;gap:9px}
.answer-box li{position:relative;padding-left:22px;font-size:15px;line-height:1.72;color:#cdd4ef}
.answer-box li::before{content:"";position:absolute;left:2px;top:10px;width:7px;height:7px;border-radius:2px;background:var(--accent)}
.article-body h3{font-size:18px;margin:24px 0 10px;color:var(--text);font-weight:700}
.article-body ul,.article-body ol{margin:0 0 22px;padding-left:22px;display:grid;gap:8px}
.article-body li{font-size:15.2px;line-height:1.75;color:#cdd4ef}
.article-body strong{color:#fff}
.article-body a{color:var(--accent);border-bottom:1px dotted rgba(0,229,192,.5)}
.article-body a:hover{border-bottom-style:solid}
.table-scroll{overflow-x:auto;margin:0 0 26px;-webkit-overflow-scrolling:touch}
.data-table{width:100%;border-collapse:collapse;font-size:14.6px;min-width:520px}
.data-table th,.data-table td{border:1px solid var(--line);padding:11px 13px;text-align:left}
.data-table th{background:var(--panel);color:var(--text);font-weight:700;white-space:nowrap}
.data-table td{color:#cdd4ef}
.data-table tr:nth-child(even) td{background:rgba(255,255,255,.02)}
.mini-faq{border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);overflow:hidden;margin:0 0 26px}
.mini-faq-item{border-bottom:1px solid var(--line)}
.mini-faq-item:last-child{border-bottom:0}
.mini-faq-item h3{font-size:15.6px;margin:0;padding:15px 20px;color:var(--text);display:flex;gap:10px;align-items:flex-start;font-family:var(--sans)}
.mini-faq-item h3::before{content:"Q";color:var(--accent);font-weight:800}
.mini-faq-item p{margin:0;padding:0 20px 16px;font-size:14.8px;line-height:1.75;color:#cdd4ef}
.mini-faq-item p::before{content:"A · ";color:var(--primary);font-weight:700}
.related-box{margin:34px 0;padding:20px 22px;border:1px dashed var(--line-2);border-radius:var(--radius);background:rgba(255,255,255,.02)}
.related-box h3{margin:0 0 12px;font-size:15.5px;font-family:var(--sans)}
.related-box ul{display:grid;gap:8px;margin:0;padding-left:20px}
.related-box li{font-size:14.6px}
.article-cta{margin:30px 0 0;padding:26px 24px;border-radius:var(--radius);background:linear-gradient(120deg,rgba(76,125,255,.14),rgba(138,92,255,.14));border:1px solid var(--line-2);text-align:center}
.article-cta h3{margin:0 0 8px;font-size:20px;font-family:var(--serif)}
.article-cta p{color:#cdd4ef;font-size:14.8px;margin:0 0 16px}
.update-line{font-size:13px;color:var(--muted);margin:0 0 22px}
@media(max-width:767px){.data-table{font-size:13.4px;min-width:480px}.answer-box{padding:16px}.mini-faq-item h3,.mini-faq-item p{padding-left:16px;padding-right:16px}.article-cta{padding:22px 18px}}

/* theme:ult - orange asymmetric speed */
:root{--bg:#190a05;--bg-soft:#241009;--panel:#2b140c;--panel-2:#361a10;--line:rgba(255,140,80,.16);--line-2:rgba(255,140,80,.34);--text:#fff4ee;--muted:#c39c8a;--primary:#ff5a1f;--violet:#ff8a3d;--accent:#ffb020;--amber:#ffd166;--radius:22px}
body{background:radial-gradient(1000px 600px at 80% 0%,#3a1509 0%,#190a05 55%)}
header{background:rgba(25,10,5,.88)}
.hero::before{background:radial-gradient(880px 420px at 78% 12%,rgba(255,90,31,.34),transparent 60%),radial-gradient(620px 360px at 10% 82%,rgba(255,176,32,.2),transparent 62%)}
.container{max-width:1280px}
.section{padding:64px 0}
.hero{padding:56px 0 44px}
.hero-grid{grid-template-columns:.95fr 1.05fr;gap:52px}
.hero h1{font-size:clamp(36px,5.6vw,60px);line-height:1.1}
.h2{font-size:clamp(30px,4.4vw,44px)}
.btn{padding:15px 32px;font-size:16px}
.feature-grid{grid-template-columns:repeat(4,1fr);gap:20px}
.feature:first-child{grid-column:span 2}
.feature:last-child{grid-column:span 2}
.feature{border-radius:22px;background:linear-gradient(150deg,var(--panel),var(--panel-2));padding:28px}
.feature:first-child .ico,.feature:last-child .ico{width:58px;height:58px}
.dl-grid{grid-template-columns:repeat(5,1fr);gap:16px}
.trust{grid-template-columns:repeat(4,1fr);gap:20px}
.notice{display:flex;overflow-x:auto;gap:20px;padding-bottom:10px;scroll-snap-type:x mandatory}
.notice-card{min-width:340px;flex:0 0 auto;scroll-snap-align:start;border-radius:22px}
.speedbar{height:14px}
.client{border-radius:24px;box-shadow:0 30px 90px rgba(255,90,31,.18)}
.footer-grid{grid-template-columns:1.5fr repeat(3,1fr)}
@media(max-width:1199px){.feature-grid{grid-template-columns:repeat(2,1fr)}.feature:first-child,.feature:last-child{grid-column:span 2}.dl-grid{grid-template-columns:repeat(3,1fr)}.trust{grid-template-columns:repeat(2,1fr)}.hero-grid{grid-template-columns:1fr;gap:40px}}
@media(max-width:767px){.container{padding:0 18px}.section{padding:64px 0}.feature-grid,.dl-grid,.trust,.footer-grid{grid-template-columns:1fr}.feature:first-child,.feature:last-child{grid-column:span 1}.notice-card{min-width:270px}}
/* density fix: tighten spacing, cap client width */
.hero .client{max-width:620px;margin:0 auto;width:100%}
.section-head{margin-bottom:34px}
.footer-cta{padding:52px 0}
footer{padding:44px 0 24px}
@media(max-width:1199px){.nav-links{gap:16px}.nav-links a{font-size:13px;white-space:nowrap}.nav-cta .btn{padding:10px 18px;font-size:14px}.hero-grid{gap:26px}.hero .client{max-width:540px}}
@media(max-width:767px){.section{padding:46px 0}.hero{padding:40px 0 32px}.hero .client{max-width:100%}.section-head{margin-bottom:26px}}