:root{
  --yellow:#FFD400;
  --yellow-deep:#FFC400;
  --yellow-soft:#FFF3B8;
  --ink:#121212;
  --ink-2:#3C3C3C;
  --muted:#5F5F5F;
  --cream:#FFFDF5;
  --line:rgba(18,18,18,.10);
  --white:#FFFFFF;
  --radius:18px;
  --shadow-sm:0 2px 10px rgba(18,18,18,.05);
  --shadow-md:0 14px 34px rgba(18,18,18,.10);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:88px;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.7;
  color:var(--ink);
  background-color:var(--cream);
  background-image:
    radial-gradient(900px 520px at 88% -140px, rgba(255,212,0,.40), rgba(255,212,0,0) 70%),
    radial-gradient(720px 440px at -8% 6%, rgba(255,236,150,.55), rgba(255,236,150,0) 68%),
    radial-gradient(1100px 620px at 50% 42%, rgba(255,240,170,.30), rgba(255,240,170,0) 72%);
  background-repeat:no-repeat;
  overflow-x:hidden;
}
img{max-width:100%}
a{color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
button{font-family:inherit}
.container{width:100%;max-width:1180px;margin:0 auto;padding-left:20px;padding-right:20px}
.section{padding:64px 0}
.section-head{max-width:780px;margin-bottom:36px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-tag{display:inline-block;font-size:12.5px;font-weight:800;letter-spacing:1px;color:var(--ink);background:var(--yellow);padding:5px 14px;border-radius:999px;margin-bottom:14px}
.section-head h2{font-size:clamp(24px,3vw,34px);font-weight:900;letter-spacing:-.4px;line-height:1.3;margin-bottom:12px}
.section-head p{font-size:15.5px;color:var(--muted);line-height:1.8}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 26px;border-radius:999px;font-size:15px;font-weight:700;text-decoration:none;border:1.5px solid transparent;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--yellow);color:var(--ink);box-shadow:0 8px 20px rgba(255,196,0,.45)}
.btn-primary:hover{background:var(--yellow-deep);box-shadow:0 12px 26px rgba(255,196,0,.55)}
.btn-dark{background:var(--ink);color:var(--yellow)}
.btn-dark:hover{background:#000;box-shadow:0 12px 26px rgba(18,18,18,.28)}
.btn-ghost{background:#fff;color:var(--ink);border-color:rgba(18,18,18,.18)}
.btn-ghost:hover{border-color:var(--ink)}
.btn-block{width:100%}
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.reveal.is-visible{opacity:1;transform:none}

/* header */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,253,245,.93);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav-bar{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:70px;position:relative}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex-shrink:0}
.brand .ai-page-logo{max-height:38px;width:auto;display:block}
.brand-name{font-size:18px;font-weight:900;letter-spacing:.5px;color:var(--ink);white-space:nowrap}
.nav-links{display:flex;align-items:center;justify-content:flex-end;gap:0;margin-left:auto}
.nav-links a{display:block;padding:9px 12px;font-size:15px;font-weight:600;color:var(--ink);text-decoration:none;border-radius:10px;white-space:nowrap;transition:background-color .2s ease,color .2s ease}
.nav-links a:hover{background:var(--yellow)}
.nav-links .ai-page-home-link{font-weight:800}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);background:#fff;border-radius:12px;cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:4px;padding:0}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .25s ease,opacity .25s ease}
.nav-toggle.open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* hero */
.hero{padding:52px 0 34px}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:9px;background:var(--ink);color:var(--yellow);font-size:13px;font-weight:700;letter-spacing:.4px;padding:7px 16px;border-radius:999px;margin-bottom:22px}
.eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--yellow);flex-shrink:0}
.hero h1{font-size:clamp(30px,4.2vw,50px);line-height:1.2;font-weight:900;letter-spacing:-.6px;margin-bottom:20px}
.hero h1 .hl{position:relative;display:inline-block;z-index:0}
.hero h1 .hl::after{content:"";position:absolute;left:-3px;right:-3px;bottom:5px;height:36%;background:var(--yellow);z-index:-1;border-radius:6px}
.hero-sub{font-size:16.5px;line-height:1.85;color:var(--muted);max-width:620px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 22px}
.hero-points li{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--ink-2)}
.hero-points li::before{content:"✓";display:inline-flex;align-items:center;justify-content:center;width:18px;height:18px;border-radius:50%;background:var(--yellow);color:var(--ink);font-size:11px;font-weight:900;flex-shrink:0}
.hero-visual{position:relative;display:flex;justify-content:center}
.hero-visual::before{content:"";position:absolute;width:300px;height:300px;border-radius:50%;background:radial-gradient(circle,rgba(255,212,0,.50),rgba(255,212,0,0) 70%);top:-50px;right:-24px;z-index:0;filter:blur(4px)}
.model-panel{position:relative;z-index:1;width:100%;max-width:440px;background:linear-gradient(160deg,#FFFFFF 0%,#FFF9DF 100%);border:1.5px solid rgba(18,18,18,.10);border-radius:26px;padding:26px 24px;box-shadow:0 24px 60px rgba(255,196,0,.30),inset 0 2px 0 rgba(255,255,255,.9);animation:floatPanel 6.5s ease-in-out infinite}
@keyframes floatPanel{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
.model-panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:6px}
.model-panel-head strong{font-size:15.5px;font-weight:900;letter-spacing:.2px}
.model-panel-head em{font-style:normal;font-size:12px;font-weight:800;background:var(--ink);color:var(--yellow);padding:3px 10px;border-radius:999px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0 18px}
.chip{font-size:12.5px;font-weight:600;color:var(--ink-2);background:#fff;border:1px solid rgba(18,18,18,.10);border-radius:999px;padding:5px 11px;transition:background-color .2s ease,color .2s ease,transform .2s ease,border-color .2s ease}
.chip:hover{background:var(--yellow);color:var(--ink);border-color:var(--yellow-deep);transform:translateY(-2px)}
.model-panel-foot{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;border-top:1px dashed rgba(18,18,18,.15);padding-top:16px}
.model-panel-foot div{text-align:center}
.model-panel-foot b{display:block;font-size:13.5px;font-weight:900;color:var(--ink)}
.model-panel-foot span{display:block;font-size:11.5px;color:var(--muted);margin-top:2px}

/* stats */
.stats{padding:10px 0 6px}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.stat-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px 18px;text-align:center;overflow:hidden;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.stat-card::before{content:"";position:absolute;left:0;top:0;width:100%;height:3px;background:var(--yellow);transform:scaleX(0);transform-origin:left;transition:transform .3s ease}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:rgba(255,212,0,.9)}
.stat-card:hover::before{transform:scaleX(1)}
.stat-card strong{display:block;font-size:32px;font-weight:900;letter-spacing:-.5px;line-height:1.2;color:var(--ink)}
.stat-card span{display:block;font-size:13.5px;color:var(--muted);margin-top:4px}

/* about */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start}
.about-copy p{font-size:15.5px;line-height:1.9;color:var(--ink-2)}
.about-copy p + p{margin-top:14px}
.feature-list{display:grid;gap:16px;margin-top:24px}
.feature-list li{position:relative;padding-left:20px;display:grid;gap:2px}
.feature-list li::before{content:"";position:absolute;left:0;top:9px;width:9px;height:9px;border-radius:3px;background:var(--yellow)}
.feature-list b{font-size:15.5px;font-weight:800}
.feature-list span{font-size:14.5px;color:var(--muted);line-height:1.7}
.about-media{display:grid;gap:16px}
.about-media figure{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-sm);transition:transform .3s ease,box-shadow .3s ease}
.about-media figure:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.about-media img{display:block;width:100%;height:auto;border-radius:var(--radius)}

/* services */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.svc-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;overflow:hidden;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.svc-card::after{content:"";position:absolute;left:0;top:0;height:3px;width:0;background:var(--yellow);transition:width .35s ease}
.svc-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:rgba(255,212,0,.85)}
.svc-card:hover::after{width:100%}
.svc-ico{width:48px;height:48px;border-radius:14px;background:linear-gradient(140deg,#FFE97A,#FFD400);display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:16px}
.svc-card h3{font-size:17px;font-weight:900;margin-bottom:8px}
.svc-card p{font-size:14.5px;color:var(--muted);line-height:1.75}
.platform-bar{margin-top:24px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px 24px}
.platform-bar h3{font-size:15px;font-weight:900;margin-bottom:14px;display:flex;align-items:center;gap:9px}
.platform-bar h3::before{content:"";width:8px;height:8px;border-radius:2px;background:var(--yellow);flex-shrink:0}

/* studio */
.studio-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.studio-item{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 18px 16px;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.studio-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:rgba(255,212,0,.85)}
.studio-item h3{font-size:15.5px;font-weight:800;margin-bottom:6px;display:flex;align-items:flex-start;gap:8px;line-height:1.5}
.studio-item h3::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--yellow);flex-shrink:0;margin-top:8px}
.studio-item p{font-size:13.5px;color:var(--muted);line-height:1.65}
.more-cap{margin-top:20px;background:#FFF8D6;border:1px solid rgba(255,196,0,.45);border-radius:var(--radius);padding:20px 24px}
.more-cap h3{font-size:15px;font-weight:900;margin-bottom:12px}
.more-cap .chips{margin:0}

/* solutions */
.sol-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.sol-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 22px;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.sol-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:rgba(255,212,0,.85)}
.sol-card h3{font-size:16.5px;font-weight:900;margin-bottom:8px}
.sol-card p{font-size:14.5px;color:var(--muted);line-height:1.75}

/* network */
.net-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.net-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px 20px;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.net-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:rgba(255,212,0,.85)}
.net-card span{display:inline-block;font-size:12px;font-weight:800;color:var(--ink);background:var(--yellow-soft);padding:3px 10px;border-radius:999px;margin-bottom:12px}
.net-card h3{font-size:15.5px;font-weight:900;margin-bottom:8px}
.net-card p{font-size:14px;color:var(--muted);line-height:1.7;word-break:break-all}

/* process */
.process-list{display:grid;gap:16px;max-width:920px;margin:0 auto}
.process-list li{display:flex;align-items:flex-start;gap:18px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px 22px;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.process-list li:hover{transform:translateX(4px);box-shadow:var(--shadow-md);border-color:rgba(255,212,0,.85)}
.step-no{flex-shrink:0;width:44px;height:44px;border-radius:12px;background:var(--yellow);color:var(--ink);display:flex;align-items:center;justify-content:center;font-weight:900;font-size:15px}
.process-list h3{font-size:16px;font-weight:900;margin-bottom:4px}
.process-list p{font-size:14.5px;color:var(--muted);line-height:1.7}

/* cases */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.case-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease}
.case-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:rgba(255,212,0,.85)}
.case-media{aspect-ratio:16/11;overflow:hidden;background:#F6F2E4}
.case-media img{display:block;width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.case-card:hover .case-media img{transform:scale(1.05)}
.case-body{padding:20px 20px 22px}
.case-body h3{font-size:16px;font-weight:900;margin-bottom:8px}
.case-body p{font-size:14px;color:var(--muted);line-height:1.7}

/* compare */
.compare-hero{display:grid;grid-template-columns:280px 1fr;gap:22px;align-items:stretch;margin-bottom:26px}
.score-card{background:linear-gradient(150deg,#FFE45C,#FFC800);border:1px solid rgba(18,18,18,.08);border-radius:20px;padding:26px 22px;text-align:center;color:var(--ink);box-shadow:0 16px 34px rgba(255,196,0,.28);display:flex;flex-direction:column;justify-content:center;gap:8px}
.score-stars{font-size:20px;letter-spacing:5px;color:#121212;line-height:1}
.score-card strong{font-size:46px;font-weight:900;line-height:1;letter-spacing:-1px}
.score-card strong span{font-size:17px;font-weight:700;margin-left:2px}
.score-card p{font-size:14px;font-weight:800}
.compare-points{background:#fff;border:1px solid var(--line);border-radius:20px;padding:24px}
.compare-points h3{font-size:16px;font-weight:900;margin-bottom:14px}
.compare-points .chips{margin:0}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:16px;background:#fff;-webkit-overflow-scrolling:touch;box-shadow:var(--shadow-sm)}
table{width:100%;border-collapse:collapse;min-width:760px;font-size:14.5px}
thead th{background:#FFF6CC;color:var(--ink);font-weight:900;text-align:left;padding:14px 16px;white-space:nowrap;border-bottom:1px solid rgba(18,18,18,.12)}
tbody td{padding:13px 16px;border-bottom:1px solid rgba(18,18,18,.07);color:var(--ink-2);vertical-align:top;line-height:1.65}
tbody tr:last-child td{border-bottom:none}
tbody tr:hover{background:#FFFDF0}
tbody td:first-child{font-weight:800;color:var(--ink);white-space:nowrap}

/* token */
.token-note{margin-top:16px;font-size:14px;color:var(--muted);line-height:1.8;background:#FFF8D6;border:1px solid rgba(255,196,0,.45);border-radius:14px;padding:14px 18px}

/* reviews */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.review-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 22px;display:flex;flex-direction:column;gap:14px;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.review-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:rgba(255,212,0,.85)}
.review-head{display:flex;align-items:center;gap:12px}
.avatar{flex-shrink:0;width:44px;height:44px;border-radius:50%;background:linear-gradient(140deg,#FFE97A,#FFD400);color:var(--ink);display:flex;align-items:center;justify-content:center;font-weight:900;font-size:17px}
.review-head strong{display:block;font-size:15px;font-weight:900}
.review-head span{display:block;font-size:13px;color:var(--muted)}
.review-card p{font-size:14.5px;line-height:1.8;color:var(--ink-2)}

/* faq */
.faq-list{display:grid;gap:12px;max-width:900px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;padding:0 20px;transition:border-color .25s ease,box-shadow .25s ease}
.faq-item[open]{border-color:rgba(255,196,0,.85);box-shadow:0 10px 26px rgba(255,196,0,.16)}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 0;font-size:15.5px;font-weight:800;color:var(--ink);line-height:1.6}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";flex-shrink:0;width:26px;height:26px;border-radius:50%;background:var(--yellow);color:var(--ink);font-size:17px;font-weight:900;display:flex;align-items:center;justify-content:center;transition:transform .25s ease,background-color .25s ease}
.faq-item[open] summary::after{content:"–";transform:rotate(180deg)}
.faq-item p{padding:0 0 20px;font-size:14.5px;color:var(--muted);line-height:1.85}

/* wiki */
.wiki-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.wiki-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px 20px;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.wiki-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:rgba(255,212,0,.85)}
.wiki-card h3{font-size:15.5px;font-weight:900;margin-bottom:8px}
.wiki-card p{font-size:14px;color:var(--muted);line-height:1.75}

/* news */
.news-list{display:grid;gap:12px}
.news-item{display:flex;align-items:center;justify-content:space-between;gap:16px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 22px;text-decoration:none;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.news-item:hover{transform:translateX(4px);box-shadow:var(--shadow-md);border-color:rgba(255,212,0,.85)}
.news-item h3{font-size:15.5px;font-weight:800;color:var(--ink)}
.news-arrow{flex-shrink:0;font-size:13px;font-weight:800;color:var(--ink);background:var(--yellow);padding:4px 12px;border-radius:999px;white-space:nowrap}

/* contact */
.contact-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:24px;align-items:start}
.contact-left{display:grid;gap:20px}
.contact-list{display:grid;gap:10px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px 24px}
.contact-list li{display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:14.5px;padding:8px 0;border-bottom:1px dashed rgba(18,18,18,.10)}
.contact-list li:last-child{border-bottom:none}
.contact-list span:first-child{color:var(--muted);flex-shrink:0}
.contact-list a,.contact-list span:last-child{font-weight:800;color:var(--ink);text-decoration:none;word-break:break-all;text-align:right}
.contact-list a:hover{color:#B98A00}
.qr-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;text-align:center;max-width:230px;box-shadow:var(--shadow-sm)}
.qr-card img{display:block;width:100%;height:auto;border-radius:12px;margin-bottom:12px}
.qr-card p{font-size:13.5px;color:var(--ink-2);font-weight:700}
.form-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:28px 26px;box-shadow:var(--shadow-sm)}
.form-card h3{font-size:19px;font-weight:900;margin-bottom:6px}
.form-card > p{font-size:14px;color:var(--muted);line-height:1.7}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:20px 0 22px}
.field{display:flex;flex-direction:column;gap:7px}
.field-full{grid-column:1/-1}
.field > span{font-size:13.5px;font-weight:700;color:var(--ink-2)}
.field input,.field select,.field textarea{width:100%;padding:11px 14px;font-size:14.5px;font-family:inherit;color:var(--ink);background:#FFFDF5;border:1px solid rgba(18,18,18,.14);border-radius:10px;outline:none;transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--yellow-deep);background:#fff;box-shadow:0 0 0 3px rgba(255,212,0,.32)}
.field textarea{resize:vertical;min-height:112px;line-height:1.7}

/* join */
.join-banner{background:linear-gradient(135deg,#181818 0%,#262200 55%,#121212 100%);border-radius:26px;padding:40px 38px;display:grid;grid-template-columns:1.35fr .65fr;gap:30px;align-items:center;border:1px solid rgba(255,212,0,.28);box-shadow:0 24px 54px rgba(18,18,18,.22)}
.join-banner h2{font-size:clamp(22px,2.6vw,30px);font-weight:900;color:#fff;line-height:1.35;margin-bottom:12px}
.join-banner p{font-size:15px;color:rgba(255,255,255,.78);line-height:1.85}
.join-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end}
.btn-ghost-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.45)}
.btn-ghost-light:hover{background:rgba(255,255,255,.12);border-color:#fff}

/* footer */
.site-footer{background:#121212;color:#EDEDED;padding:42px 0 26px;margin-top:10px;border-top:3px solid var(--yellow)}
.footer-grid{display:grid;grid-template-columns:.9fr 2.1fr;gap:34px;align-items:start}
.footer-brand-title{font-size:19px;font-weight:900;color:#fff;letter-spacing:.5px;margin-bottom:8px}
.footer-brand p{font-size:14px;color:rgba(255,255,255,.70);line-height:1.8}
.footer-label{font-size:13.5px;font-weight:800;color:var(--yellow);margin-bottom:12px;letter-spacing:.5px}
.friend-links{display:flex;flex-wrap:wrap;gap:8px 10px}
.friend-links a{display:inline-block;font-size:13px;color:rgba(255,255,255,.80);text-decoration:none;padding:5px 12px;border:1px solid rgba(255,255,255,.18);border-radius:999px;transition:background-color .2s ease,color .2s ease,border-color .2s ease}
.friend-links a:hover{background:var(--yellow);color:#121212;border-color:var(--yellow)}
.copyright{margin-top:28px;padding-top:18px;border-top:1px solid rgba(255,255,255,.14);font-size:13px;color:rgba(255,255,255,.60);text-align:center}

/* float */
.float-tools{position:fixed;right:18px;bottom:22px;display:flex;flex-direction:column;gap:10px;z-index:120}
.float-btn{width:54px;height:54px;border-radius:50%;border:none;cursor:pointer;background:var(--yellow);color:var(--ink);font-weight:800;font-size:13px;display:flex;align-items:center;justify-content:center;box-shadow:0 10px 24px rgba(255,196,0,.50);transition:transform .2s ease,background-color .2s ease,opacity .25s ease}
.float-btn:hover{transform:translateY(-3px)}
#backTop{background:#121212;color:var(--yellow);box-shadow:0 10px 24px rgba(18,18,18,.32);opacity:0;pointer-events:none}
#backTop.show{opacity:1;pointer-events:auto}
.kefu-panel{position:fixed;right:18px;bottom:156px;width:212px;z-index:120;background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px;text-align:center;box-shadow:var(--shadow-md);opacity:0;transform:translateY(10px);pointer-events:none;transition:opacity .25s ease,transform .25s ease}
.kefu-panel.open{opacity:1;transform:translateY(0);pointer-events:auto}
.kefu-panel img{display:block;width:100%;height:auto;border-radius:10px}
.kefu-panel p{font-size:13px;color:var(--ink-2);margin-top:10px;line-height:1.5}
.kefu-panel .kefu-qq{font-weight:800;color:var(--ink)}

@media (max-width:980px){
  .nav-links{position:absolute;top:100%;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;background:#FFFDF5;border:1px solid var(--line);border-radius:16px;padding:8px;margin-top:8px;box-shadow:var(--shadow-md);display:none}
  .nav-links.open{display:flex}
  .nav-links a{padding:12px 14px;border-radius:10px;font-size:15px}
  .nav-toggle{display:flex}
  .nav-actions .btn{padding:10px 16px;font-size:14px}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .hero-visual{order:2}
  .about-grid{grid-template-columns:1fr;gap:30px}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .svc-grid,.sol-grid,.review-grid,.wiki-grid,.case-grid{grid-template-columns:repeat(2,1fr)}
  .studio-grid{grid-template-columns:repeat(2,1fr)}
  .net-grid{grid-template-columns:repeat(2,1fr)}
  .compare-hero{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .join-banner{grid-template-columns:1fr;padding:32px 26px}
  .join-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr;gap:24px}
}
@media (max-width:640px){
  .section{padding:48px 0}
  .hero{padding:36px 0 26px}
  .nav-actions .btn{display:none}
  .stats-grid,.svc-grid,.sol-grid,.review-grid,.wiki-grid,.case-grid,.studio-grid,.net-grid{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .qr-card{max-width:100%}
  .model-panel-foot{grid-template-columns:1fr 1fr 1fr;gap:6px}
  .float-btn{width:48px;height:48px;font-size:12px}
  .kefu-panel{width:190px;bottom:140px}
  .table-wrap{border-radius:12px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}