*,*::before,*::after{box-sizing:border-box}
:root{
  --ink:#15162A;
  --ink-2:#3A3C58;
  --muted:#6B6E88;
  --line:#E5E0D4;
  --paper:#FAF8F3;
  --paper-2:#F3F0E7;
  --blue:#2B4BFF;
  --coral:#FF5C3E;
  --yellow:#FFC93C;
  --mint:#00B98B;
}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--paper);color:var(--ink);font-size:16px;line-height:1.72;-webkit-font-smoothing:antialiased;overflow-x:hidden}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.3;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button{font:inherit;color:inherit}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}
.section{padding:82px 0}
.section-alt{background:var(--paper-2)}
section[id]{scroll-margin-top:84px}

/* 顶部导航 */
.site-header{position:sticky;top:0;z-index:70;background:rgba(250,248,243,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:70px;position:relative}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.ai-page-logo{max-height:38px;width:auto;object-fit:contain}
.brand-text{font-size:18px;font-weight:900;letter-spacing:.02em}
.nav-links{display:flex;align-items:center;gap:0}
.nav-links a{display:block;padding:10px 9px;font-size:13.5px;font-weight:600;color:var(--ink-2);border-radius:8px;transition:color .2s ease,background .2s ease}
.nav-links a:hover{color:var(--blue);background:#EDEFFF}
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:4px;width:42px;height:38px;padding:0 9px;background:#fff;border:2px solid var(--ink);border-radius:10px;cursor:pointer}
.nav-toggle span{display:block;height:2px;background:var(--ink);border-radius:2px;transition:transform .25s ease,opacity .25s ease}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 26px;border-radius:12px;font-weight:700;font-size:15px;border:2px solid var(--ink);cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease}
.btn-sm{padding:9px 18px;font-size:13.5px;border-radius:10px}
.btn-primary{background:var(--coral);color:#fff;box-shadow:4px 4px 0 var(--ink)}
.btn-primary:hover{transform:translate(-2px,-2px);box-shadow:7px 7px 0 var(--ink)}
.btn-outline{background:#fff;color:var(--ink);box-shadow:4px 4px 0 rgba(21,22,42,.14)}
.btn-outline:hover{background:var(--yellow);transform:translate(-2px,-2px);box-shadow:6px 6px 0 var(--ink)}
.btn-dark{background:var(--ink);color:#fff;box-shadow:4px 4px 0 var(--coral)}
.btn-dark:hover{transform:translate(-2px,-2px);box-shadow:7px 7px 0 var(--coral)}
.btn:active{transform:translate(1px,1px);box-shadow:none}

/* 区块标题 */
.sec-head{margin:0 auto 44px;max-width:800px;text-align:center}
.sec-tag{display:inline-flex;align-items:center;padding:6px 16px;border-radius:999px;background:#fff;border:1px solid var(--line);color:var(--blue);font-size:12.5px;font-weight:800;letter-spacing:.08em;margin-bottom:18px}
.sec-head h2{font-size:clamp(25px,3.1vw,36px)}
.sec-head p{margin-top:16px;color:var(--muted);font-size:15.5px}

/* 首屏 */
.hero{position:relative;overflow:hidden;padding:64px 0 72px;background:
  radial-gradient(760px 360px at 6% -8%,#E4E9FF 0%,rgba(228,233,255,0) 66%),
  radial-gradient(700px 380px at 96% 2%,#FFE7DE 0%,rgba(255,231,222,0) 62%),
  linear-gradient(180deg,#FDFBF7 0%,#FAF8F3 100%)}
.hero-inner{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);gap:48px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:9px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:7px 16px;font-size:13px;font-weight:700;color:var(--ink-2)}
.eyebrow .dot{width:8px;height:8px;border-radius:50%;background:var(--coral);animation:pulse 2.2s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.4;transform:scale(.72)}}
.hero h1{margin-top:22px;font-size:clamp(29px,4.4vw,47px);font-weight:900;line-height:1.24;letter-spacing:-.02em}
.hero h1 .hl{background:linear-gradient(180deg,rgba(255,201,60,0) 60%,rgba(255,201,60,.85) 60%)}
.hero-lead{margin-top:18px;font-size:16px;color:var(--ink-2);max-width:580px}
.hero-actions{margin-top:28px;display:flex;flex-wrap:wrap;gap:14px}
.hero-points{margin-top:26px;display:flex;flex-wrap:wrap;gap:10px 24px}
.hero-points li{position:relative;padding-left:24px;font-size:14px;font-weight:600;color:var(--ink-2)}
.hero-points li::before{content:"";position:absolute;left:0;top:50%;width:16px;height:16px;margin-top:-8px;border-radius:50%;background:var(--mint)}
.hero-points li::after{content:"";position:absolute;left:5px;top:50%;width:6px;height:3px;margin-top:-3px;border-left:2px solid #fff;border-bottom:2px solid #fff;transform:rotate(-45deg)}
.hero-panel{background:#fff;border:2px solid var(--ink);border-radius:20px;padding:24px;box-shadow:9px 9px 0 var(--yellow)}
.panel-title{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:800;margin-bottom:14px}
.panel-title .mark{width:10px;height:10px;border-radius:3px;background:var(--blue)}
.panel-list li{display:flex;flex-direction:column;gap:2px;padding:12px 0;border-bottom:1px dashed var(--line)}
.panel-list li:last-child{border-bottom:none;padding-bottom:0}
.panel-list strong{font-size:14.5px}
.panel-list .desc{font-size:13px;color:var(--muted);line-height:1.6}
.hero-stats{margin-top:44px;display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.stat{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 18px;transition:transform .22s ease,box-shadow .22s ease}
.stat:hover{transform:translateY(-3px);box-shadow:0 18px 34px -26px rgba(21,22,42,.6)}
.stat strong{display:block;font-size:23px;font-weight:900;color:var(--blue)}
.stat:nth-child(2) strong{color:var(--coral)}
.stat:nth-child(3) strong{color:var(--mint)}
.stat:nth-child(4) strong{color:var(--ink)}
.stat span{font-size:13px;color:var(--muted)}

/* 通用卡片 */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.card:hover{transform:translateY(-4px);box-shadow:0 22px 44px -30px rgba(21,22,42,.75);border-color:#CFC8B6}
.card h3{font-size:17px;margin-bottom:10px}
.card p{font-size:14.5px;color:var(--muted)}

/* 关于 */
.about-intro{max-width:860px;margin:0 auto 40px;text-align:center;font-size:16px;color:var(--ink-2)}
.about-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.about-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:18px;padding:26px 24px 24px;overflow:hidden;transition:transform .25s ease,box-shadow .25s ease}
.about-card:hover{transform:translateY(-4px);box-shadow:0 22px 44px -30px rgba(21,22,42,.75)}
.about-card .idx{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:11px;font-size:14px;font-weight:900;color:#fff;background:var(--blue);margin-bottom:14px}
.about-card:nth-child(2) .idx{background:var(--coral)}
.about-card:nth-child(3) .idx{background:var(--mint)}
.about-card:nth-child(4) .idx{background:var(--yellow);color:var(--ink)}
.about-card:nth-child(5) .idx{background:var(--ink)}
.about-card:nth-child(6) .idx{background:var(--blue)}
.about-card h3{font-size:16.5px;margin-bottom:8px}
.about-card p{font-size:14px;color:var(--muted)}

/* 服务卡片 */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.svc-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px 22px 20px;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.svc-card::before{content:"";position:absolute;left:0;top:22px;bottom:22px;width:4px;border-radius:0 4px 4px 0;background:var(--blue);opacity:0;transition:opacity .25s ease}
.svc-card:hover::before{opacity:1}
.svc-card:hover{transform:translateY(-4px);box-shadow:0 22px 44px -30px rgba(21,22,42,.75);border-color:#CFC8B6}
.svc-card:nth-child(4n+2)::before{background:var(--coral)}
.svc-card:nth-child(4n+3)::before{background:var(--mint)}
.svc-card:nth-child(4n+4)::before{background:var(--yellow)}
.svc-card h3{font-size:16px;margin-bottom:8px}
.svc-card p{font-size:13.8px;color:var(--muted);line-height:1.68}
.tag-cloud{margin-top:34px;display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.tag-cloud li{font-size:13px;font-weight:600;color:var(--ink-2);background:#fff;border:1px solid var(--line);border-radius:999px;padding:7px 15px;transition:transform .2s ease,background .2s ease,color .2s ease,border-color .2s ease}
.tag-cloud li:hover{transform:translateY(-2px);background:var(--ink);color:#fff;border-color:var(--ink)}

/* 一站式制作 */
.studio-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.studio-col{background:#fff;border:2px solid var(--ink);border-radius:20px;padding:26px 24px;transition:transform .25s ease}
.studio-col:hover{transform:translateY(-4px)}
.studio-col:nth-child(1){box-shadow:7px 7px 0 var(--blue)}
.studio-col:nth-child(2){box-shadow:7px 7px 0 var(--coral)}
.studio-col:nth-child(3){box-shadow:7px 7px 0 var(--mint)}
.studio-col h3{font-size:18px;margin-bottom:6px}
.studio-col .sub{font-size:13px;color:var(--muted);margin-bottom:16px}
.studio-list li{position:relative;padding:8px 0 8px 22px;font-size:14.2px;color:var(--ink-2);border-bottom:1px dashed var(--line)}
.studio-list li:last-child{border-bottom:none}
.studio-list li::before{content:"";position:absolute;left:2px;top:17px;width:7px;height:7px;border-radius:50%;background:var(--blue)}
.studio-col:nth-child(2) .studio-list li::before{background:var(--coral)}
.studio-col:nth-child(3) .studio-list li::before{background:var(--mint)}

/* 行业方案 */
.sol-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px;border-top:4px solid var(--blue);transition:transform .25s ease,box-shadow .25s ease}
.sol-card:nth-child(2){border-top-color:var(--coral)}
.sol-card:nth-child(3){border-top-color:var(--mint)}
.sol-card:nth-child(4){border-top-color:var(--yellow)}
.sol-card:nth-child(5){border-top-color:var(--ink)}
.sol-card:nth-child(6){border-top-color:var(--blue)}
.sol-card:hover{transform:translateY(-4px);box-shadow:0 22px 44px -30px rgba(21,22,42,.75)}
.sol-card h3{font-size:16.5px;margin-bottom:8px}
.sol-card p{font-size:14px;color:var(--muted)}

/* 服务网络 */
.network-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.net-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px 20px;text-align:left}
.net-card .badge{display:inline-block;font-size:12px;font-weight:800;color:var(--blue);background:#EDEFFF;border-radius:999px;padding:4px 12px;margin-bottom:12px}
.net-card:nth-child(2) .badge{color:#B5341C;background:#FFE9E3}
.net-card:nth-child(3) .badge{color:#00795C;background:#E1F7F0}
.net-card:nth-child(4) .badge{color:#8A6400;background:#FFF4D6}
.net-card h3{font-size:15.5px;margin-bottom:8px}
.net-card p{font-size:13.8px;color:var(--muted)}
.network-note{margin-top:26px;text-align:center;font-size:14.5px;color:var(--muted)}

/* 标准流程 */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.step{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px 18px;transition:transform .25s ease,box-shadow .25s ease}
.step:hover{transform:translateY(-4px);box-shadow:0 22px 44px -30px rgba(21,22,42,.75)}
.step-num{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:9px;background:var(--blue);color:#fff;font-size:13px;font-weight:900;margin-bottom:14px}
.step:nth-child(2) .step-num{background:var(--coral)}
.step:nth-child(3) .step-num{background:var(--mint)}
.step:nth-child(4) .step-num{background:var(--yellow);color:var(--ink)}
.step:nth-child(5) .step-num{background:var(--ink)}
.step h3{font-size:15.5px;margin-bottom:8px}
.step p{font-size:13.5px;color:var(--muted);line-height:1.66}

/* 案例 */
.case-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.case-card{background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;transition:transform .25s ease,box-shadow .25s ease}
.case-card:hover{transform:translateY(-4px);box-shadow:0 26px 50px -34px rgba(21,22,42,.8)}
.case-media{background:var(--paper-2);display:flex;align-items:center;justify-content:center;padding:0}
.case-media.wide{aspect-ratio:16/9}
.case-media.square{aspect-ratio:1/1;max-width:100%}
.case-media img{width:100%;height:100%;object-fit:contain}
.case-body{padding:20px 22px 24px}
.case-body h3{font-size:16.5px;margin-bottom:8px}
.case-body p{font-size:14px;color:var(--muted)}

/* 对比评测 */
.review-grid{display:grid;grid-template-columns:320px minmax(0,1fr);gap:26px;align-items:start}
.score-card{background:var(--ink);color:#fff;border-radius:20px;padding:28px 26px;position:sticky;top:96px}
.score-label{font-size:13px;letter-spacing:.08em;color:#B9BCDA;font-weight:700}
.stars{margin-top:8px;font-size:24px;letter-spacing:3px;color:var(--yellow)}
.score-num{margin-top:10px;font-size:46px;font-weight:900;line-height:1.1;color:#fff}
.score-num span{font-size:16px;font-weight:700;color:#B9BCDA;margin-left:8px}
.score-note{margin-top:6px;font-size:13.5px;color:#C9CBE4}
.score-list{margin-top:18px;padding-top:18px;border-top:1px solid rgba(255,255,255,.18)}
.score-list li{position:relative;padding-left:20px;font-size:13.8px;color:#E4E5F2;line-height:1.9}
.score-list li::before{content:"";position:absolute;left:0;top:12px;width:8px;height:8px;border-radius:2px;background:var(--yellow)}
.table-wrap{overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:18px}
table{width:100%;border-collapse:collapse;min-width:720px}
caption{text-align:left}
th,td{padding:14px 18px;text-align:left;font-size:14px;border-bottom:1px solid var(--line);vertical-align:top}
thead th{background:#F6F3EA;font-weight:800;font-size:14px;color:var(--ink);white-space:nowrap}
tbody th{font-weight:700;color:var(--ink);white-space:nowrap;background:#FCFAF5}
tbody tr:last-child th,tbody tr:last-child td{border-bottom:none}
td.win{color:#1231C9;font-weight:700;background:#F4F6FF}
td{color:var(--muted)}

/* Token 比价 */
.token-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:18px;padding:26px;overflow:hidden;transition:transform .25s ease,box-shadow .25s ease}
.token-card:hover{transform:translateY(-4px);box-shadow:0 22px 44px -30px rgba(21,22,42,.75)}
.token-card::after{content:"";position:absolute;right:-34px;top:-34px;width:120px;height:120px;border-radius:50%;background:rgba(43,75,255,.08)}
.token-card:nth-child(2)::after{background:rgba(255,92,62,.1)}
.token-card:nth-child(3)::after{background:rgba(0,185,139,.1)}
.token-card h3{font-size:17px;margin-bottom:8px}
.token-card p{font-size:14px;color:var(--muted)}
.token-note{margin-top:26px;text-align:center;font-size:14px;color:var(--muted)}

/* 需求匹配 */
.match-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.match-card{display:flex;flex-direction:column;justify-content:space-between;background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px 20px;min-height:170px;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.match-card:hover{transform:translateY(-4px);box-shadow:0 22px 44px -30px rgba(21,22,42,.75);border-color:var(--blue)}
.match-card h3{font-size:15.5px}
.match-card p{font-size:13.4px;color:var(--muted);margin-top:8px;flex:1}
.match-card a{display:inline-block;margin-top:14px;font-size:13.5px;font-weight:700;color:var(--blue)}
.match-card a:hover{text-decoration:underline}

/* 帮助中心 */
.help-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.help-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px}
.help-card .h-label{font-size:12.5px;font-weight:800;color:var(--blue);letter-spacing:.06em;margin-bottom:8px}
.help-card:nth-child(2) .h-label{color:#B5341C}
.help-card:nth-child(3) .h-label{color:#00795C}
.help-card:nth-child(4) .h-label{color:#8A6400}
.help-card:nth-child(5) .h-label{color:var(--blue)}
.help-card:nth-child(6) .h-label{color:#B5341C}
.help-card h3{font-size:15.5px;margin-bottom:6px}
.help-card p{font-size:14px;color:var(--muted);word-break:break-all}

/* FAQ */
.faq-list{max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease}
.faq-item.open{border-color:var(--blue);box-shadow:0 18px 36px -30px rgba(43,75,255,.9)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 22px;background:none;border:none;text-align:left;font-size:15.5px;font-weight:700;color:var(--ink);cursor:pointer}
.faq-icon{position:relative;flex:0 0 16px;width:16px;height:16px}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--blue);border-radius:2px;transition:transform .25s ease}
.faq-icon::before{left:0;top:7px;width:16px;height:2px}
.faq-icon::after{left:7px;top:0;width:2px;height:16px}
.faq-item.open .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 22px 20px;font-size:14.5px;color:var(--muted)}

/* AI百科 */
.wiki-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.wiki-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px;transition:transform .22s ease,box-shadow .22s ease}
.wiki-card:hover{transform:translateY(-3px);box-shadow:0 20px 38px -30px rgba(21,22,42,.75)}
.wiki-card h3{font-size:15px;margin-bottom:6px;color:var(--blue)}
.wiki-card:nth-child(3n+2) h3{color:#B5341C}
.wiki-card:nth-child(3n+3) h3{color:#00795C}
.wiki-card p{font-size:13.4px;color:var(--muted);line-height:1.7}

/* 文章 */
.article-list{max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.article-list a{display:flex;align-items:center;justify-content:space-between;gap:16px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 22px;font-size:15px;font-weight:700;transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease}
.article-list a:hover{transform:translateX(4px);border-color:var(--blue);box-shadow:0 18px 36px -30px rgba(43,75,255,.9)}
.article-list a span{color:var(--blue);font-size:13.5px;font-weight:700;white-space:nowrap}

/* 联系 */
.contact-grid{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,.75fr);gap:28px;align-items:start}
.form-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:28px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1/-1}
.field label{font-size:13.5px;font-weight:700;color:var(--ink-2)}
.field input,.field select,.field textarea{font-family:inherit;font-size:14.5px;padding:12px 14px;border:1px solid #D8D2C3;border-radius:10px;background:#FDFCF9;color:var(--ink);transition:border-color .2s ease,box-shadow .2s ease;width:100%}
.field textarea{resize:vertical;min-height:110px}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(43,75,255,.14);background:#fff}
.form-card .btn{margin-top:20px;width:100%}
.form-note{margin-top:14px;font-size:13px;color:var(--muted);text-align:center}
.side-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:26px}
.side-card h3{font-size:16px;margin-bottom:14px}
.side-list li{display:flex;flex-direction:column;gap:2px;padding:11px 0;border-bottom:1px dashed var(--line);font-size:14px}
.side-list li:last-child{border-bottom:none}
.side-list .k{font-size:12.5px;color:var(--muted);font-weight:700}
.side-list .v{color:var(--ink);font-weight:600;word-break:break-all}
.qr-box{margin-top:18px;text-align:center;background:var(--paper-2);border-radius:14px;padding:16px}
.qr-box img{margin:0 auto;max-width:150px;width:100%;height:auto;border-radius:8px}
.qr-box p{margin-top:10px;font-size:13px;color:var(--muted)}

/* 加盟代理 */
.join{position:relative;overflow:hidden;background:var(--ink);color:#fff;padding:78px 0}
.join::before{content:"";position:absolute;right:-120px;top:-120px;width:340px;height:340px;border-radius:50%;background:rgba(255,201,60,.16)}
.join::after{content:"";position:absolute;left:-100px;bottom:-140px;width:300px;height:300px;border-radius:50%;background:rgba(43,75,255,.22)}
.join-inner{position:relative;z-index:1}
.join .sec-tag{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.28);color:var(--yellow)}
.join-head{max-width:760px;margin:0 auto 42px;text-align:center}
.join-head h2{font-size:clamp(24px,3vw,34px);color:#fff}
.join-head p{margin-top:16px;color:#C9CBE4;font-size:15.5px}
.join-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.join-card{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.18);border-radius:16px;padding:24px;transition:transform .25s ease,background .25s ease}
.join-card:hover{transform:translateY(-4px);background:rgba(255,255,255,.12)}
.join-card h3{font-size:16px;margin-bottom:8px;color:#fff}
.join-card p{font-size:14px;color:#C9CBE4}
.join-actions{margin-top:36px;display:flex;flex-wrap:wrap;gap:14px;justify-content:center}
.join-actions .btn-primary{box-shadow:4px 4px 0 rgba(255,201,60,.9)}
.join-actions .btn-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.6);box-shadow:none}
.join-actions .btn-outline:hover{background:rgba(255,255,255,.14);color:#fff;box-shadow:none;transform:translateY(-2px)}

/* 页脚 */
.site-footer{background:var(--paper-2);border-top:1px solid var(--line);padding:50px 0 26px;color:var(--ink)}
.footer-top{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.3fr);gap:40px;padding-bottom:30px;border-bottom:1px solid #DCD6C6}
.footer-name{font-size:20px;font-weight:900}
.footer-brand p{margin-top:12px;font-size:14px;color:var(--muted);max-width:380px}
.footer-home{margin-top:14px;font-size:14px}
.footer-home a{font-weight:700;color:var(--blue)}
.footer-home a:hover{text-decoration:underline}
.footer-links h3{font-size:15px;margin-bottom:14px}
.friend-links{display:flex;flex-wrap:wrap;gap:10px 20px}
.friend-links a{font-size:13.5px;color:var(--muted);transition:color .2s ease}
.friend-links a:hover{color:var(--blue)}
.footer-bottom{margin-top:22px;font-size:13px;color:var(--muted);text-align:center}

/* 浮动组件 */
.floaters{position:fixed;right:18px;bottom:20px;z-index:90;display:flex;flex-direction:column;align-items:flex-end;gap:10px}
.fs-panel{width:230px;background:#fff;border:2px solid var(--ink);border-radius:16px;padding:18px;box-shadow:6px 6px 0 var(--yellow)}
.fs-panel[hidden]{display:none}
.fs-panel h4{margin:0 0 10px;font-size:14.5px;font-weight:800}
.fs-panel p{font-size:13px;color:var(--muted);line-height:1.75;word-break:break-all}
.fs-panel a{color:var(--blue);font-weight:700}
.fs-btn,.icon-btn{border:2px solid var(--ink);border-radius:999px;cursor:pointer;font-weight:800;font-size:13.5px;transition:transform .18s ease,box-shadow .18s ease}
.fs-btn{background:var(--coral);color:#fff;padding:11px 20px;box-shadow:4px 4px 0 var(--ink)}
.fs-btn:hover{transform:translate(-2px,-2px);box-shadow:6px 6px 0 var(--ink)}
.icon-btn{width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;background:#fff;color:var(--ink);padding:0;opacity:0;visibility:hidden;transform:translateY(6px)}
.icon-btn.show{opacity:1;visibility:visible;transform:none}
.icon-btn:hover{background:var(--yellow)}

/* 滚动渐入 */
html.anim .reveal{opacity:0;transform:translateY(22px);transition:opacity .6s ease,transform .6s ease}
html.anim .reveal.is-in{opacity:1;transform:none}

/* 响应式 */
@media (max-width:1100px){
  .nav-toggle{display:flex}
  .header-cta{display:none}
  .nav{position:absolute;left:0;right:0;top:100%;background:#fff;border-bottom:1px solid var(--line);display:none;padding:8px 20px 16px;box-shadow:0 18px 30px -24px rgba(21,22,42,.7);max-height:72vh;overflow-y:auto}
  .nav.is-open{display:block}
  .nav-links{flex-direction:column;align-items:stretch}
  .nav-links a{padding:13px 8px;font-size:15px;border-bottom:1px solid var(--paper-2);border-radius:0}
  .nav-links li:last-child a{border-bottom:none}
}
@media (max-width:980px){
  .hero-inner{grid-template-columns:1fr;gap:36px}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .about-grid,.svc-grid,.studio-grid,.help-grid,.join-grid{grid-template-columns:repeat(2,1fr)}
  .grid-4,.network-grid,.wiki-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .match-grid{grid-template-columns:repeat(2,1fr)}
  .review-grid{grid-template-columns:1fr}
  .score-card{position:static}
  .contact-grid{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr;gap:28px}
}
@media (max-width:720px){
  .section{padding:56px 0}
  .hero{padding:44px 0 52px}
  .case-grid{grid-template-columns:1fr}
  .grid-2{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .hero-panel{padding:20px}
  .sec-head{margin-bottom:32px}
}
@media (max-width:560px){
  .about-grid,.svc-grid,.studio-grid,.help-grid,.join-grid,.grid-3,.grid-4,.network-grid,.wiki-grid,.match-grid,.steps{grid-template-columns:1fr}
  .hero-stats{grid-template-columns:1fr 1fr}
  .stat strong{font-size:20px}
  .hero-actions .btn{width:100%}
  .score-num{font-size:40px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  html.anim .reveal{opacity:1;transform:none;transition:none}
  .eyebrow .dot{animation:none}
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
}