*{margin:0;padding:0;box-sizing:border-box}
:root{
  --blue:#1857ff;
  --blue-d:#0b3fd6;
  --cyan:#00c8ff;
  --mint:#00e0b8;
  --ink:#0d1230;
  --ink-2:#37405e;
  --ink-3:#6b7494;
  --line:#e2e7f5;
  --bg:#f4f7ff;
  --white:#ffffff;
  --radius:18px;
  --shadow:0 14px 40px rgba(24,87,255,.10);
  --shadow-s:0 6px 18px rgba(24,87,255,.08);
}
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:
    radial-gradient(1200px 600px at 10% -5%, #dfeaff 0%, rgba(223,234,255,0) 60%),
    radial-gradient(1000px 500px at 95% 5%, #e2fbff 0%, rgba(226,251,255,0) 55%),
    linear-gradient(180deg,#f4f7ff 0%,#f7f9ff 40%,#eef3ff 100%);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 22px}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
ul{list-style:none}
h1,h2,h3{line-height:1.3;letter-spacing:.2px}
.section{padding:76px 0}
.section-head{max-width:760px;margin:0 auto 44px;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:1.5px;
  color:var(--blue);background:rgba(24,87,255,.08);
  padding:6px 14px;border-radius:999px;margin-bottom:16px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--blue);box-shadow:0 0 0 4px rgba(24,87,255,.15)}
.section-head h2{font-size:34px;font-weight:800;color:var(--ink);margin-bottom:14px}
.section-head p{color:var(--ink-3);font-size:16px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 28px;border-radius:999px;font-size:15px;font-weight:700;
  border:none;cursor:pointer;transition:transform .25s ease,box-shadow .25s ease,background .25s ease;
  white-space:nowrap;
}
.btn-primary{
  color:#fff;
  background:linear-gradient(120deg,var(--blue) 0%,#3f7bff 55%,var(--cyan) 100%);
  box-shadow:0 12px 26px rgba(24,87,255,.32);
}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 18px 34px rgba(24,87,255,.4)}
.btn-ghost{color:var(--blue);background:#fff;border:1.5px solid rgba(24,87,255,.28);box-shadow:var(--shadow-s)}
.btn-ghost:hover{transform:translateY(-3px);border-color:var(--blue);box-shadow:0 14px 28px rgba(24,87,255,.18)}
.btn:active{transform:translateY(0) scale(.98)}

/* ============ HEADER ============ */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(24,87,255,.10);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:20px;min-height:72px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand .ai-page-logo{width:auto;max-height:40px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-size:17px;font-weight:800;color:var(--ink)}
.brand-text span{font-size:11px;color:var(--ink-3);letter-spacing:.6px}
.nav-links{display:flex;align-items:center;gap:0;flex-wrap:wrap}
.nav-links a{
  font-size:14px;font-weight:600;color:var(--ink-2);
  padding:8px 12px;border-radius:10px;
  transition:color .2s ease,background .2s ease;position:relative;
}
.nav-links a:hover{color:var(--blue);background:rgba(24,87,255,.07)}
.header-cta{display:flex;align-items:center;gap:10px;flex-shrink:0}
.header-cta .btn{padding:10px 20px;font-size:14px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:#fff;cursor:pointer;position:relative;flex-shrink:0;
}
.nav-toggle span{
  position:absolute;left:11px;width:20px;height:2px;background:var(--ink);border-radius:2px;
  transition:all .3s ease;
}
.nav-toggle span:nth-child(1){top:14px}
.nav-toggle span:nth-child(2){top:20px}
.nav-toggle span:nth-child(3){top:26px}
.nav-toggle.open span:nth-child(1){top:20px;transform:rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){top:20px;transform:rotate(-45deg)}
.mobile-menu{
  display:none;border-top:1px solid var(--line);
  background:rgba(255,255,255,.98);padding:12px 0 18px;
}
.mobile-menu.show{display:block;animation:fadeDown .3s ease}
.mobile-menu a{
  display:block;padding:11px 22px;font-size:15px;font-weight:600;color:var(--ink-2);
}
.mobile-menu a:hover{background:rgba(24,87,255,.06);color:var(--blue)}
.mobile-menu .btn{margin:10px 22px 0;width:calc(100% - 44px)}
@keyframes fadeDown{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}

/* ============ HERO ============ */
.hero{
  position:relative;overflow:hidden;
  padding:74px 0 86px;
}
.hero::before{
  content:"";position:absolute;inset:0;z-index:0;
  background:
    radial-gradient(560px 320px at 82% 12%, rgba(0,200,255,.20), transparent 70%),
    radial-gradient(480px 300px at 6% 82%, rgba(24,87,255,.18), transparent 72%);
  pointer-events:none;
}
.hero-inner{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.15fr .85fr;gap:52px;align-items:center;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:999px;font-size:13px;font-weight:700;
  color:var(--blue-d);background:rgba(255,255,255,.85);
  border:1px solid rgba(24,87,255,.18);
  box-shadow:0 6px 18px rgba(24,87,255,.10);
  margin-bottom:20px;
}
.hero-badge i{
  width:8px;height:8px;border-radius:50%;background:var(--mint);
  box-shadow:0 0 0 4px rgba(0,224,184,.22);
  animation:pulse 2s infinite;
}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.45}}
.hero h1{
  font-size:46px;font-weight:900;letter-spacing:.5px;color:var(--ink);
  margin-bottom:20px;
}
.hero h1 em{
  font-style:normal;
  background:linear-gradient(100deg,var(--blue) 0%,#00a8ff 50%,var(--mint) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{font-size:17px;color:var(--ink-2);margin-bottom:14px;max-width:580px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px}
.hero-points span{
  font-size:13px;font-weight:600;color:var(--blue-d);
  background:#fff;border:1px solid rgba(24,87,255,.16);
  padding:6px 14px;border-radius:999px;box-shadow:0 4px 12px rgba(24,87,255,.06);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.hero-note{font-size:13px;color:var(--ink-3);display:flex;align-items:center;gap:8px}
.hero-note svg{flex-shrink:0}
.hero-panel{
  background:linear-gradient(160deg,rgba(255,255,255,.96),rgba(238,245,255,.9));
  border:1px solid rgba(24,87,255,.14);
  border-radius:24px;
  padding:28px;
  box-shadow:0 26px 60px rgba(24,87,255,.16);
  position:relative;
  animation:floatY 6s ease-in-out infinite;
}
@keyframes floatY{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
.hero-panel h3{font-size:16px;font-weight:800;color:var(--ink);margin-bottom:18px;display:flex;align-items:center;gap:8px}
.hero-panel h3::before{content:"";width:4px;height:16px;border-radius:3px;background:linear-gradient(180deg,var(--blue),var(--cyan))}
.hero-stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.hero-stat{
  background:#fff;border:1px solid rgba(24,87,255,.10);border-radius:14px;
  padding:14px 16px;transition:transform .25s ease,box-shadow .25s ease;
}
.hero-stat:hover{transform:translateY(-4px);box-shadow:0 12px 24px rgba(24,87,255,.14)}
.hero-stat b{display:block;font-size:22px;font-weight:900;color:var(--blue)}
.hero-stat span{font-size:12px;color:var(--ink-3);font-weight:600}
.hero-model-tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:18px}
.hero-model-tags span{
  font-size:11px;font-weight:600;color:var(--ink-2);
  background:rgba(24,87,255,.07);border-radius:7px;padding:4px 9px;
}

/* ============ METRICS ============ */
.metrics{padding:0 0 76px}
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.metric-card{
  background:#fff;border-radius:var(--radius);padding:26px 22px;text-align:center;
  border:1px solid rgba(24,87,255,.10);
  box-shadow:var(--shadow-s);
  transition:transform .3s ease,box-shadow .3s ease;
}
.metric-card:hover{transform:translateY(-6px);box-shadow:0 20px 40px rgba(24,87,255,.18)}
.metric-card .num{font-size:32px;font-weight:900;color:var(--blue);line-height:1.2}
.metric-card .num small{font-size:16px;font-weight:800}
.metric-card p{font-size:14px;color:var(--ink-3);margin-top:6px;font-weight:600}

/* ============ ABOUT ============ */
.about-wrap{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.about-text h2{font-size:32px;font-weight:800;margin-bottom:16px}
.about-text p{color:var(--ink-2);font-size:15.5px;margin-bottom:14px}
.about-list{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:20px}
.about-list li{
  display:flex;align-items:flex-start;gap:8px;font-size:14px;color:var(--ink-2);font-weight:600;
  background:#fff;border:1px solid rgba(24,87,255,.10);border-radius:10px;padding:10px 12px;
  transition:border-color .25s ease,transform .25s ease;
}
.about-list li:hover{border-color:rgba(24,87,255,.4);transform:translateX(3px)}
.about-list li::before{content:"✓";color:var(--mint);font-weight:900;flex-shrink:0}
.about-visual{position:relative}
.about-card-stack{display:grid;gap:14px}
.about-mini{
  background:#fff;border-radius:16px;padding:18px 20px;border:1px solid rgba(24,87,255,.10);
  box-shadow:var(--shadow-s);display:flex;align-items:center;gap:14px;
  transition:transform .3s ease,box-shadow .3s ease;
}
.about-mini:hover{transform:translateY(-4px);box-shadow:0 16px 32px rgba(24,87,255,.16)}
.about-mini .ico{
  width:44px;height:44px;border-radius:12px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;font-size:20px;
  background:linear-gradient(135deg,rgba(24,87,255,.12),rgba(0,200,255,.16));
}
.about-mini b{display:block;font-size:15px;font-weight:800;color:var(--ink)}
.about-mini span{font-size:13px;color:var(--ink-3)}

/* ============ SERVICES ============ */
.services{position:relative}
.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.service-card{
  background:#fff;border-radius:var(--radius);padding:28px 24px;
  border:1px solid rgba(24,87,255,.10);
  box-shadow:var(--shadow-s);
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
  position:relative;overflow:hidden;
}
.service-card::after{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--blue),var(--cyan),var(--mint));
  transform:scaleX(0);transform-origin:left;transition:transform .35s ease;
}
.service-card:hover{transform:translateY(-6px);box-shadow:0 22px 44px rgba(24,87,255,.16);border-color:rgba(24,87,255,.24)}
.service-card:hover::after{transform:scaleX(1)}
.service-card .ico{
  width:52px;height:52px;border-radius:14px;margin-bottom:16px;
  display:flex;align-items:center;justify-content:center;font-size:24px;
  background:linear-gradient(135deg,rgba(24,87,255,.10),rgba(0,200,255,.18));
}
.service-card h3{font-size:18px;font-weight:800;margin-bottom:8px}
.service-card p{font-size:14px;color:var(--ink-3);line-height:1.65}

/* ============ FLOW ============ */
.flow{background:linear-gradient(180deg,rgba(255,255,255,.7),rgba(233,241,255,.7));border-top:1px solid rgba(24,87,255,.07);border-bottom:1px solid rgba(24,87,255,.07)}
.flow-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.flow-step{
  background:#fff;border-radius:16px;padding:22px 18px;text-align:center;
  border:1px solid rgba(24,87,255,.10);box-shadow:var(--shadow-s);position:relative;
  transition:transform .3s ease,box-shadow .3s ease;
}
.flow-step:hover{transform:translateY(-5px);box-shadow:0 16px 32px rgba(24,87,255,.16)}
.flow-step .idx{
  width:38px;height:38px;margin:0 auto 12px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:900;color:#fff;
  background:linear-gradient(135deg,var(--blue),var(--cyan));
  box-shadow:0 8px 18px rgba(24,87,255,.3);
}
.flow-step h3{font-size:15px;font-weight:800;margin-bottom:6px}
.flow-step p{font-size:12.5px;color:var(--ink-3)}

/* ============ TABLE / COMPARE ============ */
.compare-wrap{overflow-x:auto;border-radius:var(--radius);box-shadow:var(--shadow);background:#fff}
table{width:100%;border-collapse:collapse;min-width:720px}
thead th{
  background:linear-gradient(120deg,#1857ff,#0b3fd6);color:#fff;
  font-size:14px;font-weight:700;padding:16px 18px;text-align:left;
}
tbody td{padding:15px 18px;font-size:14px;color:var(--ink-2);border-bottom:1px solid var(--line)}
tbody tr:nth-child(even){background:#f8faff}
tbody tr:hover{background:rgba(24,87,255,.05)}
tbody td:first-child{font-weight:700;color:var(--ink)}
.rating-box{
  margin-top:26px;display:grid;grid-template-columns:auto 1fr;gap:26px;align-items:center;
  background:linear-gradient(120deg,#ffffff,#eef4ff);border:1px solid rgba(24,87,255,.14);
  border-radius:var(--radius);padding:26px 30px;box-shadow:var(--shadow-s);
}
.rating-score{text-align:center;padding-right:26px;border-right:1px solid var(--line)}
.rating-score b{font-size:48px;font-weight:900;color:var(--blue);line-height:1}
.rating-score span{display:block;font-size:13px;color:var(--ink-3);font-weight:600;margin-top:4px}
.rating-stars{color:#ffb020;font-size:20px;letter-spacing:3px;margin-bottom:6px}
.rating-desc h3{font-size:18px;font-weight:800;margin-bottom:6px}
.rating-desc p{font-size:14px;color:var(--ink-3)}

/* ============ CASES ============ */
.case-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.case-card{
  background:#fff;border-radius:var(--radius);overflow:hidden;
  border:1px solid rgba(24,87,255,.10);box-shadow:var(--shadow-s);
  transition:transform .3s ease,box-shadow .3s ease;
}
.case-card:hover{transform:translateY(-6px);box-shadow:0 22px 44px rgba(24,87,255,.16)}
.case-media{position:relative;background:#eef3ff;aspect-ratio:16/9;overflow:hidden}
.case-media img{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 22px}
.case-body h3{font-size:17px;font-weight:800;margin-bottom:8px}
.case-body p{font-size:14px;color:var(--ink-3)}
.case-tag{
  display:inline-block;font-size:11px;font-weight:700;color:var(--blue);
  background:rgba(24,87,255,.08);border-radius:6px;padding:3px 9px;margin-bottom:10px;
}
.case-side{display:grid;gap:22px}
.case-side .case-media{aspect-ratio:4/3}

/* ============ TOKEN ============ */
.token-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.token-card{
  background:#fff;border-radius:var(--radius);padding:26px 24px;
  border:1px solid rgba(24,87,255,.10);box-shadow:var(--shadow-s);
  transition:transform .3s ease,box-shadow .3s ease;
}
.token-card:hover{transform:translateY(-6px);box-shadow:0 22px 44px rgba(24,87,255,.16)}
.token-card h3{font-size:16px;font-weight:800;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.token-card h3::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--mint)}
.token-row{display:flex;justify-content:space-between;align-items:center;padding:9px 0;border-bottom:1px dashed var(--line);font-size:14px}
.token-row:last-child{border-bottom:none}
.token-row span{color:var(--ink-3)}
.token-row b{color:var(--blue);font-weight:800}
.token-note{margin-top:22px;font-size:13px;color:var(--ink-3);text-align:center}

/* ============ COMMENTS ============ */
.comment-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.comment-card{
  background:#fff;border-radius:var(--radius);padding:24px;
  border:1px solid rgba(24,87,255,.10);box-shadow:var(--shadow-s);
  display:flex;flex-direction:column;gap:12px;
  transition:transform .3s ease,box-shadow .3s ease;
}
.comment-card:hover{transform:translateY(-5px);box-shadow:0 20px 40px rgba(24,87,255,.14)}
.comment-head{display:flex;align-items:center;gap:12px}
.avatar{
  width:42px;height:42px;border-radius:50%;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:800;color:#fff;
  background:linear-gradient(135deg,var(--blue),var(--cyan));
}
.comment-head b{display:block;font-size:14px;font-weight:800}
.comment-head span{font-size:12px;color:var(--ink-3)}
.comment-card p{font-size:14px;color:var(--ink-2);line-height:1.7}
.comment-stars{color:#ffb020;font-size:13px;letter-spacing:2px}

/* ============ FAQ ============ */
.faq-list{max-width:880px;margin:0 auto;display:grid;gap:12px}
.faq-item{
  background:#fff;border:1px solid rgba(24,87,255,.10);border-radius:14px;
  box-shadow:var(--shadow-s);overflow:hidden;transition:border-color .25s ease;
}
.faq-item.open{border-color:rgba(24,87,255,.32)}
.faq-q{
  width:100%;text-align:left;background:none;border:none;cursor:pointer;
  padding:18px 22px;font-size:15px;font-weight:700;color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  font-family:inherit;line-height:1.5;
}
.faq-q .plus{
  width:24px;height:24px;border-radius:50%;flex-shrink:0;position:relative;
  background:rgba(24,87,255,.10);transition:transform .3s ease,background .3s ease;
}
.faq-q .plus::before,.faq-q .plus::after{
  content:"";position:absolute;top:50%;left:50%;background:var(--blue);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-q .plus::before{width:11px;height:2px}
.faq-q .plus::after{width:2px;height:11px;transition:opacity .3s ease}
.faq-item.open .plus{transform:rotate(180deg);background:rgba(24,87,255,.16)}
.faq-item.open .plus::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a p{padding:0 22px 20px;font-size:14px;color:var(--ink-2);line-height:1.75}

/* ============ FORM ============ */
.form-section{background:linear-gradient(160deg,rgba(255,255,255,.9),rgba(232,241,255,.9));border-top:1px solid rgba(24,87,255,.08)}
.form-wrap{
  display:grid;grid-template-columns:.9fr 1.1fr;gap:42px;align-items:start;
}
.form-info h2{font-size:32px;font-weight:800;margin-bottom:14px}
.form-info>p{font-size:15px;color:var(--ink-2);margin-bottom:24px}
.contact-list{display:grid;gap:12px}
.contact-item{
  display:flex;align-items:center;gap:12px;background:#fff;border-radius:12px;
  padding:13px 16px;border:1px solid rgba(24,87,255,.10);box-shadow:var(--shadow-s);
  transition:transform .25s ease,border-color .25s ease;
}
.contact-item:hover{transform:translateX(4px);border-color:rgba(24,87,255,.35)}
.contact-item .ico{
  width:36px;height:36px;border-radius:10px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;font-size:16px;
  background:rgba(24,87,255,.08);
}
.contact-item b{display:block;font-size:13px;color:var(--ink-3);font-weight:600}
.contact-item span{font-size:14px;color:var(--ink);font-weight:700;word-break:break-all}
.qr-box{
  margin-top:18px;background:#fff;border:1px solid rgba(24,87,255,.12);border-radius:14px;
  padding:16px;text-align:center;box-shadow:var(--shadow-s);
}
.qr-box img{width:150px;height:150px;object-fit:contain;margin:0 auto 8px;border-radius:8px}
.qr-box p{font-size:13px;color:var(--ink-3);font-weight:600}
.form-card{
  background:#fff;border-radius:var(--radius);padding:30px;
  border:1px solid rgba(24,87,255,.12);box-shadow:0 24px 60px rgba(24,87,255,.14);
}
.form-card h3{font-size:20px;font-weight:800;margin-bottom:6px}
.form-card>p{font-size:13.5px;color:var(--ink-3);margin-bottom:22px}
.form-grid{display:grid;gap:16px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field label{display:block;font-size:13px;font-weight:700;color:var(--ink-2);margin-bottom:6px}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border-radius:10px;border:1.5px solid var(--line);
  font-size:14px;font-family:inherit;color:var(--ink);background:#fbfcff;
  transition:border-color .25s ease,box-shadow .25s ease,background .25s ease;
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--blue);background:#fff;
  box-shadow:0 0 0 4px rgba(24,87,255,.10);
}
.field textarea{resize:vertical;min-height:100px}
.form-card .btn{width:100%;margin-top:4px}
.form-tip{font-size:12px;color:var(--ink-3);text-align:center;margin-top:12px}

/* ============ ARTICLES ============ */
.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.article-card{
  background:#fff;border-radius:var(--radius);padding:22px;
  border:1px solid rgba(24,87,255,.10);box-shadow:var(--shadow-s);
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
  display:flex;flex-direction:column;gap:10px;
}
.article-card:hover{transform:translateY(-6px);box-shadow:0 20px 40px rgba(24,87,255,.16);border-color:rgba(24,87,255,.28)}
.article-card .tag{
  font-size:11px;font-weight:700;color:var(--blue);background:rgba(24,87,255,.08);
  border-radius:6px;padding:3px 9px;align-self:flex-start;
}
.article-card h3{font-size:16px;font-weight:800;line-height:1.45}
.article-card p{font-size:13.5px;color:var(--ink-3);flex:1}
.article-card .more{font-size:13px;font-weight:700;color:var(--blue)}
.article-card .more::after{content:"→";margin-left:4px;transition:margin .25s ease;display:inline-block}
.article-card:hover .more::after{margin-left:8px}

/* ============ TAGS ============ */
.tagcloud{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;max-width:960px;margin:0 auto}
.tagcloud span{
  font-size:13px;font-weight:600;color:var(--ink-2);background:#fff;
  border:1px solid rgba(24,87,255,.12);border-radius:999px;padding:8px 16px;
  transition:all .25s ease;cursor:default;
}
.tagcloud span:hover{color:#fff;background:linear-gradient(120deg,var(--blue),var(--cyan));border-color:transparent;transform:translateY(-3px);box-shadow:0 10px 22px rgba(24,87,255,.24)}

/* ============ CTA BAND ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:24px;padding:52px 40px;text-align:center;
  background:linear-gradient(120deg,#1857ff 0%,#2a6bff 45%,#00b8e6 100%);
  box-shadow:0 28px 60px rgba(24,87,255,.32);
}
.cta-band::before{
  content:"";position:absolute;width:320px;height:320px;border-radius:50%;
  background:rgba(255,255,255,.14);top:-120px;right:-80px;
}
.cta-band::after{
  content:"";position:absolute;width:220px;height:220px;border-radius:50%;
  background:rgba(255,255,255,.10);bottom:-100px;left:-60px;
}
.cta-band h2{position:relative;color:#fff;font-size:30px;font-weight:900;margin-bottom:12px}
.cta-band p{position:relative;color:rgba(255,255,255,.92);font-size:15.5px;margin-bottom:26px}
.cta-band .btn{position:relative;background:#fff;color:var(--blue-d);box-shadow:0 12px 28px rgba(0,0,0,.16)}
.cta-band .btn:hover{transform:translateY(-3px);box-shadow:0 18px 36px rgba(0,0,0,.22)}

/* ============ FOOTER ============ */
.site-footer{background:#0d1230;color:#c8d2ee;padding:52px 0 0;margin-top:76px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:34px;padding-bottom:36px}
.footer-brand .ai-page-logo{max-height:38px;width:auto;margin-bottom:14px;filter:brightness(0) invert(1)}
.footer-brand p{font-size:13.5px;color:#98a5c9;line-height:1.75;margin-bottom:14px}
.footer-contact{font-size:13px;color:#98a5c9;line-height:2}
.footer-contact b{color:#ffffff;font-weight:700}
.footer-col h3{font-size:14px;font-weight:800;color:#ffffff;margin-bottom:14px}
.footer-col ul{display:grid;gap:9px}
.footer-col a{font-size:13px;color:#98a5c9;transition:color .2s ease}
.footer-col a:hover{color:#66d9ff}
.footer-qr{display:flex;flex-direction:column;gap:10px}
.footer-qr img{width:110px;height:110px;object-fit:contain;border-radius:8px;background:#fff;padding:4px}
.footer-qr p{font-size:12px;color:#98a5c9}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);
  padding:20px 0;display:flex;align-items:center;justify-content:space-between;
  flex-wrap:wrap;gap:12px;font-size:12.5px;color:#8894b8;
}
.footer-links-inline{display:flex;flex-wrap:wrap;gap:16px}
.footer-links-inline a{color:#a9b6d8;transition:color .2s ease}
.footer-links-inline a:hover{color:#66d9ff}

/* ============ FLOATING ============ */
.float-actions{position:fixed;right:20px;bottom:26px;z-index:200;display:flex;flex-direction:column;gap:10px}
.float-btn{
  width:50px;height:50px;border-radius:50%;border:none;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  background:#fff;color:var(--blue);box-shadow:0 10px 26px rgba(24,87,255,.24);
  transition:transform .25s ease,box-shadow .25s ease;
}
.float-btn:hover{transform:translateY(-4px) scale(1.06);box-shadow:0 16px 32px rgba(24,87,255,.32)}
.float-btn svg{width:22px;height:22px}
.float-btn.primary{background:linear-gradient(135deg,var(--blue),var(--cyan));color:#fff}
.float-top{opacity:0;visibility:hidden;transition:all .3s ease}
.float-top.show{opacity:1;visibility:visible}
.float-panel{
  position:fixed;right:20px;bottom:88px;z-index:201;background:#fff;border-radius:16px;
  padding:18px;box-shadow:0 24px 60px rgba(13,18,48,.22);text-align:center;width:210px;
  opacity:0;visibility:hidden;transform:translateY(10px);transition:all .3s ease;
}
.float-panel.show{opacity:1;visibility:visible;transform:translateY(0)}
.float-panel img{width:150px;height:150px;object-fit:contain;margin:0 auto 8px;border-radius:8px}
.float-panel b{display:block;font-size:14px;color:var(--ink);margin-bottom:4px}
.float-panel p{font-size:12px;color:var(--ink-3)}

/* ============ REVEAL ============ */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.reveal.visible{opacity:1;transform:translateY(0)}

/* ============ RESPONSIVE ============ */
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero h1{font-size:38px}
  .hero-panel{max-width:520px;animation:none}
  .metric-grid{grid-template-columns:repeat(2,1fr)}
  .service-grid{grid-template-columns:repeat(2,1fr)}
  .flow-grid{grid-template-columns:repeat(3,1fr)}
  .token-grid{grid-template-columns:repeat(2,1fr)}
  .comment-grid{grid-template-columns:repeat(2,1fr)}
  .article-grid{grid-template-columns:repeat(2,1fr)}
  .about-wrap{grid-template-columns:1fr;gap:34px}
  .form-wrap{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .case-grid{grid-template-columns:1fr}
  .case-side{grid-template-columns:1fr 1fr}
  .case-side .case-media{aspect-ratio:16/9}
}
@media (max-width:860px){
  .nav-links,.header-cta .btn{display:none}
  .nav-toggle{display:block}
  .section{padding:58px 0}
  .section-head h2{font-size:26px}
  .hero{padding:52px 0 64px}
  .hero h1{font-size:31px}
  .hero-lead{font-size:15.5px}
  .rating-box{grid-template-columns:1fr;gap:16px;text-align:center;padding:22px}
  .rating-score{border-right:none;padding-right:0;padding-bottom:14px;border-bottom:1px solid var(--line)}
}
@media (max-width:640px){
  .container{padding:0 16px}
  .hero h1{font-size:27px}
  .hero-actions .btn{width:100%}
  .hero-stat-grid{grid-template-columns:1fr 1fr}
  .metric-grid{grid-template-columns:1fr 1fr;gap:12px}
  .metric-card{padding:20px 14px}
  .metric-card .num{font-size:26px}
  .service-grid,.token-grid,.comment-grid,.article-grid{grid-template-columns:1fr}
  .flow-grid{grid-template-columns:1fr 1fr}
  .about-list{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .case-side{grid-template-columns:1fr}
  .cta-band{padding:38px 22px}
  .cta-band h2{font-size:23px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .float-actions{right:14px;bottom:18px}
  .float-btn{width:46px;height:46px}
  .float-panel{right:14px;width:190px}
}