:root{--night:#08110d;--night-2:#0c1a14;--night-3:#10221a;--matcha:#7ee787;--cyan:#38d9c4;
--amber:#e8c16b;--ink:#e6f2ea;--ink-soft:#9fb8a8;--line:#1e352a;--line-2:#244a35;--white:#fff}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
color:var(--ink);background:var(--night);line-height:1.75;font-size:16px;margin-left:230px}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:1140px;margin:0 auto;padding:0 24px}
.accent{color:var(--matcha)}
h1,h2,h3{line-height:1.25;font-weight:800}
h1{font-size:clamp(34px,5vw,54px)}
h2{font-size:clamp(24px,3.4vw,36px)}
h3{font-size:19px}

/* 左侧固定 sidenav */
.sidenav{position:fixed;left:0;top:0;bottom:0;width:230px;z-index:80;background:rgba(8,17,13,.82);
backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-right:1px solid var(--line);
display:flex;flex-direction:column;padding:26px 18px 22px;overflow-y:auto}
.side-brand{display:flex;align-items:center;gap:10px;margin-bottom:26px;padding-bottom:20px;border-bottom:1px solid var(--line)}
.brand-mark{flex:0 0 auto;border-radius:8px;overflow:hidden}
.brand-word{display:flex;flex-direction:column;line-height:1.1}
.brand-name{font-size:19px;font-weight:800;letter-spacing:.5px;color:var(--ink)}
.brand-name em{font-style:normal;color:var(--matcha)}
.brand-sub{font-size:10px;color:var(--ink-soft);letter-spacing:1px}
.side-links{display:flex;flex-direction:column;gap:4px}
.side-link{display:flex;align-items:center;gap:12px;font-size:15px;color:var(--ink-soft);padding:10px 14px;
border-radius:10px;border:1px solid transparent;transition:.18s}
.side-ico{width:20px;text-align:center;color:var(--cyan);font-size:15px;opacity:.85}
.side-link:hover{color:var(--ink);background:rgba(126,231,135,.08)}
.side-link.on{color:var(--matcha);background:rgba(126,231,135,.12);border-color:rgba(126,231,135,.28);box-shadow:0 0 0 1px rgba(126,231,135,.15)}
.side-cta{display:block;margin-top:22px;text-align:center;background:linear-gradient(135deg,#7ee787,#38d9c4);color:#04150d;
padding:11px 18px;border-radius:12px;font-size:14px;font-weight:700;box-shadow:0 0 22px rgba(126,231,135,.35);transition:.2s}
.side-cta:hover{transform:translateY(-1px);box-shadow:0 0 30px rgba(126,231,135,.5)}
.side-note{margin-top:auto;padding-top:18px;font-size:11px;line-height:1.6;color:var(--ink-soft);border-top:1px solid var(--line)}

/* hero 分屏 */
.hero{position:relative;min-height:600px;display:flex;align-items:center;overflow:hidden;color:#fff}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;transform:scale(1.04);filter:blur(2px)}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(110deg,rgba(4,12,8,.92) 0%,rgba(6,16,11,.78) 45%,rgba(6,16,11,.55) 100%)}
.hero-inner{position:relative;z-index:2;width:100%;max-width:1140px;margin:0 auto;padding:80px 24px;
display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.hero-copy{text-align:left}
.hero-visual{display:flex;flex-direction:column;align-items:center;gap:18px;background:rgba(12,26,20,.42);
backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid rgba(126,231,135,.22);border-radius:20px;
padding:28px 22px;box-shadow:0 0 44px rgba(56,217,196,.16)}
.orbits{width:220px;height:220px;filter:drop-shadow(0 0 14px rgba(126,231,135,.55))}
.hero-visual svg{max-width:100%;height:auto}
.eyebrow{display:inline-block;font-size:13px;letter-spacing:3px;color:var(--cyan);font-weight:600;
text-transform:uppercase;margin-bottom:14px}
.hero .eyebrow{color:var(--cyan)}
.hero h1{color:#fff;margin-bottom:18px;text-shadow:0 0 30px rgba(126,231,135,.35)}
.hero .accent{color:var(--matcha);text-shadow:0 0 26px rgba(126,231,135,.6)}
.hero-sub{font-size:18px;color:rgba(230,242,234,.9);max-width:560px;margin:0 0 30px}
.hero-actions{display:flex;flex-direction:column;gap:12px;align-items:flex-start;margin-bottom:26px}
.btn{display:inline-block;padding:14px 30px;border-radius:30px;font-size:15px;font-weight:700;transition:.2s}
.btn-primary{background:linear-gradient(135deg,#7ee787,#38d9c4);color:#04150d;box-shadow:0 0 24px rgba(126,231,135,.4)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 36px rgba(126,231,135,.6)}
.btn-ghost{background:rgba(255,255,255,.04);color:#fff;border:1px solid rgba(126,231,135,.4);backdrop-filter:blur(6px)}
.btn-ghost:hover{border-color:var(--matcha);color:var(--matcha)}
.hero-points{display:flex;gap:10px;flex-wrap:wrap}
.point{background:rgba(126,231,135,.12);border:1px solid rgba(126,231,135,.3);color:var(--matcha);
padding:6px 16px;border-radius:20px;font-size:13px}

/* section */
.section{padding:76px 0}
.section.alt{background:var(--night-2)}
.section-head{text-align:center;max-width:640px;margin:0 auto 44px}
.section-head .eyebrow{color:var(--cyan)}
.section-head p{color:var(--ink-soft);margin-top:12px}
.section-foot{text-align:center;margin-top:36px}

/* stats */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:-40px}
.stat-card{background:rgba(12,26,20,.6);border:1px solid var(--line);border-radius:16px;padding:26px 18px;
text-align:center;box-shadow:0 6px 22px rgba(0,0,0,.3);backdrop-filter:blur(8px)}
.stat-num{font-size:30px;font-weight:800;color:var(--matcha)}
.stat-card p{font-size:13px;color:var(--ink-soft);margin-top:6px}

/* bento */
.bento{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.people-row{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
@media(max-width:820px){.people-row{grid-template-columns:repeat(2,1fr)}}
.bento-card{background:rgba(12,26,20,.6);border:1px solid var(--line);border-radius:16px;padding:28px 24px;transition:.2s;
backdrop-filter:blur(8px)}
.bento-card:hover{transform:translateY(-4px);border-color:var(--matcha);box-shadow:0 12px 28px rgba(0,0,0,.4)}
.bento-ico{font-size:30px;margin-bottom:12px;filter:drop-shadow(0 0 8px rgba(56,217,196,.5))}
.bento-card h3{margin-bottom:8px}
.bento-card p{font-size:14px;color:var(--ink-soft)}

/* split */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.split.rev .split-media{order:-1}
.split-copy .eyebrow{color:var(--cyan)}
.split-copy h2{margin-bottom:16px}
.split-copy h3{margin:18px 0 6px}
.split-copy p{color:var(--ink-soft);margin-bottom:12px}
.checklist{list-style:none;margin:18px 0 22px}
.checklist li{padding:6px 0 6px 28px;position:relative;color:var(--ink)}
.checklist li::before{content:"✓";position:absolute;left:0;color:var(--matcha);font-weight:700}
.media-frame{border-radius:16px;overflow:hidden;box-shadow:0 16px 40px rgba(0,0,0,.4);border:1px solid var(--line)}
.media-frame img{width:100%;height:320px;object-fit:cover}
.terrace-frame{background:rgba(12,26,20,.6);border:1px solid var(--line);border-radius:16px;padding:20px;backdrop-filter:blur(8px)}

/* steps */
.steps{max-width:640px;margin:0 auto;display:flex;flex-direction:column;gap:0}
.step{display:flex;gap:20px;position:relative;padding-bottom:32px}
.step:not(:last-child)::before{content:"";position:absolute;left:21px;top:48px;bottom:0;width:2px;background:var(--line)}
.step-num{flex:0 0 44px;height:44px;border-radius:50%;background:linear-gradient(135deg,#7ee787,#38d9c4);color:#04150d;
display:flex;align-items:center;justify-content:center;font-weight:800;font-size:18px;box-shadow:0 0 16px rgba(126,231,135,.35)}
.step-body h3{margin-bottom:4px}
.step-body p{color:var(--ink-soft);font-size:14px}

/* faq */
.faq{max-width:760px;margin:0 auto}
.reviews-sec{background:var(--bg-2)}
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.review-card{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:24px;box-shadow:0 12px 32px rgba(0,0,0,.35)}
.review-card .stars{color:#f5a623;font-size:16px;letter-spacing:2px;margin-bottom:12px}
.review-card p{color:var(--ink-soft);font-size:15px;line-height:1.7}
.rv-meta{margin-top:16px;display:flex;align-items:center;gap:10px}
.rv-meta strong{font-size:14px}
.rv-meta span{font-size:12px;color:var(--ink-soft);background:var(--bg-2);padding:3px 10px;border-radius:12px}
.faq-item{background:rgba(12,26,20,.6);border:1px solid var(--line);border-radius:12px;margin-bottom:12px;overflow:hidden}
.faq-item summary{padding:18px 22px;font-weight:600;cursor:pointer;list-style:none;position:relative}
.faq-item summary::after{content:"+";position:absolute;right:22px;top:14px;font-size:22px;color:var(--matcha);transition:.2s}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item p{padding:0 22px 20px;color:var(--ink-soft);font-size:14px}

/* platform */
.platform-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.platform-card{background:rgba(12,26,20,.6);border:1px solid var(--line);border-radius:14px;overflow:hidden;display:block;transition:.2s}
.platform-card:hover{transform:translateY(-4px);border-color:var(--matcha);box-shadow:0 12px 28px rgba(0,0,0,.4)}
.platform-top{height:6px;background:linear-gradient(90deg,#7ee787,#38d9c4)}
.platform-body{padding:22px 20px}
.platform-ico{font-size:26px}
.platform-body h3{margin:10px 0 4px}
.platform-body p{font-size:13px;color:var(--ink-soft);margin-bottom:12px}
.platform-link{color:var(--matcha);font-size:13px;font-weight:600}

/* table */
.table-wrap{overflow-x:auto;background:rgba(12,26,20,.6);border:1px solid var(--line);border-radius:14px}
table{width:100%;border-collapse:collapse;font-size:14px;min-width:520px}
th,td{padding:13px 18px;text-align:left;border-bottom:1px solid var(--line)}
thead th{background:linear-gradient(135deg,#1a3a2a,#12301f);color:var(--matcha);font-weight:700}
tbody tr:last-child td{border-bottom:none}
tbody tr:hover{background:rgba(126,231,135,.06)}

/* tip/callout */
.tip{background:rgba(232,193,107,.08);border-left:4px solid var(--amber);padding:16px 20px;border-radius:8px;
font-size:14px;color:var(--ink);margin-top:20px}

/* page-hero (inner pages) */
.page-hero{background:radial-gradient(1200px 400px at 50% -10%,rgba(126,231,135,.16),transparent),linear-gradient(180deg,#0c1a14,#08110d);color:#fff;padding:56px 0 60px;text-align:center;border-bottom:1px solid var(--line)}
.page-hero .eyebrow{color:var(--cyan)}
.page-hero h1{margin:6px 0 14px}
.page-hero .accent{color:var(--matcha)}
.page-sub{font-size:16px;color:var(--ink-soft);max-width:640px;margin:0 auto}
.page-hero .hero-actions{margin:24px 0 0;align-items:center}
.page-hero .btn-ghost{border-color:rgba(126,231,135,.4)}

/* breadcrumb */
.breadcrumb{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;font-size:13px;margin-bottom:20px;opacity:.85}
.crumb a{color:var(--ink-soft);border-bottom:1px dotted rgba(126,231,135,.5)}
.crumb a:hover{color:var(--matcha)}
.crumb+.crumb::before{content:"/";margin-right:8px;opacity:.5}

/* article */
.article-hero{background:radial-gradient(1200px 400px at 50% -10%,rgba(126,231,135,.16),transparent),linear-gradient(180deg,#0c1a14,#08110d);color:#fff;padding:56px 0 48px;border-bottom:1px solid var(--line)}
.article-hero h1{font-size:clamp(26px,3.6vw,40px);margin:10px 0 14px;max-width:820px}
.article-hero .accent{color:var(--matcha)}
.article-meta{font-size:13px;color:var(--ink-soft)}
.article-layout{display:grid;grid-template-columns:240px 1fr;gap:44px;padding:48px 0 64px;align-items:start}
.toc{position:sticky;top:24px;background:rgba(12,26,20,.6);border:1px solid var(--line);border-radius:12px;padding:20px;backdrop-filter:blur(8px)}
.toc h4{font-size:13px;color:var(--ink-soft);letter-spacing:1px;margin-bottom:12px}
.toc a{display:block;font-size:13px;color:var(--ink-soft);padding:6px 0;border-left:2px solid transparent;padding-left:12px}
.toc a:hover{color:var(--matcha);border-color:var(--amber)}
.article-body{max-width:720px}
.article-body h2{font-size:24px;margin:34px 0 14px;padding-left:14px;border-left:4px solid var(--matcha)}
.article-body h3{font-size:18px;margin:26px 0 10px}
.article-body p{margin-bottom:16px;color:var(--ink)}
.article-body ul,.article-body ol{margin:0 0 18px 24px}
.article-body li{margin-bottom:8px}
.article-body img{border-radius:12px;margin:20px 0;border:1px solid var(--line)}
.article-body .lead{font-size:18px;color:var(--matcha);font-weight:500}
.related{border-top:1px solid var(--line);margin-top:40px;padding-top:30px}
.related h3{margin-bottom:16px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.related-card{background:rgba(12,26,20,.6);border:1px solid var(--line);border-radius:12px;padding:16px;font-size:14px}
.related-card:hover{border-color:var(--matcha)}
.related-card span{color:var(--matcha);font-weight:600}

/* search */
.search-box{max-width:520px;margin:26px auto 0;display:flex;gap:10px}
.search-input{flex:1;padding:13px 18px;border-radius:28px;border:1px solid var(--line);background:rgba(12,26,20,.6);font-size:15px;outline:none;color:var(--ink)}
.search-input:focus{border-color:var(--matcha)}
.search-btn{background:linear-gradient(135deg,#7ee787,#38d9c4);color:#04150d;border:none;padding:0 26px;border-radius:28px;font-size:15px;font-weight:700;cursor:pointer}
.search-results{max-width:640px;margin:30px auto 0;text-align:left}
.search-results .hit{background:rgba(12,26,20,.6);border:1px solid var(--line);border-radius:10px;padding:14px 18px;margin-bottom:10px}
.search-results .hit a{color:var(--matcha);font-weight:600}

/* sitemap page */
.sitegroup{margin-bottom:34px}
.sitegroup h2{font-size:20px;margin-bottom:14px;color:var(--matcha)}
.sitegroup ul{list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.sitegroup li a{color:var(--ink);font-size:14px;border-bottom:1px dotted var(--line);display:inline-block;padding-bottom:2px}
.sitegroup li a:hover{color:var(--matcha)}

/* share */
.share{display:flex;gap:14px;align-items:center;font-size:13px;margin:24px 0 0;color:var(--ink-soft)}
.share a{color:var(--matcha);border-bottom:1px dotted var(--matcha)}

/* final cta */
.final-cta{background:radial-gradient(900px 360px at 50% 0%,rgba(126,231,135,.18),transparent),linear-gradient(135deg,#0c1a14,#08110d);color:#fff;text-align:center;padding:80px 0;border-top:1px solid var(--line)}
.final-cta h2{margin-bottom:10px}
.final-cta .accent{color:var(--matcha)}
.final-cta p{color:var(--ink-soft);margin-bottom:26px}
.final-cta .btn-primary{background:linear-gradient(135deg,#7ee787,#38d9c4);color:#04150d}

/* footer */
.sitefoot{background:#050d09;color:#9fb8a8;padding:56px 0 30px;font-size:14px;border-top:1px solid var(--line)}
.foot-top{display:flex;align-items:flex-start;justify-content:space-between;gap:30px;flex-wrap:wrap;margin-bottom:30px}
.foot-brand{display:flex;align-items:center;gap:10px;color:#fff}
.foot-info{color:#7fa090;max-width:260px}
.foot-links{display:flex;gap:20px;flex-wrap:wrap}
.foot-links a{color:#9fb8a8}
.foot-links a:hover{color:var(--matcha)}
.foot-copy{border-top:1px solid rgba(126,231,135,.12);padding-top:22px;color:#6e8578;font-size:13px;text-align:center}

/* backtop */
.backtop{position:fixed;right:22px;bottom:26px;width:44px;height:44px;border-radius:50%;border:none;
background:linear-gradient(135deg,#7ee787,#38d9c4);color:#04150d;font-size:20px;cursor:pointer;display:none;z-index:60;box-shadow:0 6px 18px rgba(0,0,0,.4)}
.backtop:hover{box-shadow:0 0 22px rgba(126,231,135,.5)}

@media(max-width:920px){
body{margin-left:0}
.sidenav{position:static;width:100%;height:auto;flex-direction:row;flex-wrap:wrap;align-items:center;gap:10px;padding:14px 16px;border-right:none;border-bottom:1px solid var(--line)}
.side-brand{margin-bottom:0;padding-bottom:0;border-bottom:none;margin-right:auto}
.side-links{flex-direction:row;flex-wrap:wrap;gap:2px}
.side-link{padding:7px 11px;font-size:13px}
.side-cta{margin-top:0;padding:8px 16px;font-size:13px}
.side-note{display:none}
.hero-inner{grid-template-columns:1fr;gap:28px;padding:56px 24px}
.hero-visual{max-width:420px}
.stat-grid{grid-template-columns:repeat(2,1fr);margin-top:0}
.bento{grid-template-columns:repeat(2,1fr)}
.platform-grid{grid-template-columns:repeat(2,1fr)}
.split,.split.rev{grid-template-columns:1fr;gap:30px}
.split.rev .split-media{order:0}
.article-layout{grid-template-columns:1fr}
.toc{position:static}
.related-grid{grid-template-columns:1fr}
.sitegroup ul{grid-template-columns:1fr}
}