*{margin:0;padding:0;box-sizing:border-box}
:root{
  --orange:#f4631e;
  --orange-deep:#d94a0d;
  --orange-light:#fff1e8;
  --orange-soft:#ffd9c2;
  --ink:#1d1a17;
  --ink-soft:#5a5148;
  --ink-faint:#8a7f74;
  --line:#f0e4d9;
  --bg:#fffdfb;
  --card:#ffffff;
  --shadow:0 10px 30px rgba(244,99,30,.10);
  --shadow-lg:0 18px 46px rgba(244,99,30,.16);
  --radius:16px;
  --radius-sm:10px;
  --container:1180px;
}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  background:var(--bg);
  color:var(--ink);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
ul{list-style:none}
.container{max-width:var(--container);margin:0 auto;padding:0 20px}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,253,251,.92);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .3s;
}
.site-header.scrolled{box-shadow:0 4px 20px rgba(244,99,30,.10)}
.nav-wrap{
  display:flex;align-items:center;justify-content:space-between;
  gap:18px;min-height:66px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.ai-page-logo{height:34px;width:auto}
.brand-name{font-size:18px;font-weight:800;letter-spacing:.5px;color:var(--ink);white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:0;flex-wrap:wrap}
.nav-links a{
  font-size:14px;color:var(--ink-soft);padding:8px 11px;border-radius:8px;
  transition:color .2s,background .2s;white-space:nowrap;
}
.nav-links a:hover{color:var(--orange);background:var(--orange-light)}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--orange),#ff8b45);
  color:#fff !important;font-size:14px;font-weight:700;
  padding:9px 18px;border-radius:999px;white-space:nowrap;
  box-shadow:0 6px 16px rgba(244,99,30,.28);
  transition:transform .2s,box-shadow .2s;
}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 10px 22px rgba(244,99,30,.36);background:linear-gradient(135deg,#ff7a3a,var(--orange))}
.menu-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);
  background:#fff;border-radius:10px;cursor:pointer;flex-direction:column;
  align-items:center;justify-content:center;gap:5px;flex-shrink:0;
}
.menu-toggle span{display:block;width:20px;height:2px;background:var(--ink);border-radius:2px;transition:.3s}
.menu-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle.active span:nth-child(2){opacity:0}
.menu-toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ===== Hero ===== */
.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(circle at 88% 12%,rgba(244,99,30,.20),transparent 42%),
    radial-gradient(circle at 8% 88%,rgba(255,168,102,.22),transparent 46%),
    linear-gradient(160deg,#fff8f2 0%,#fffdfb 48%,#ffefe4 100%);
  padding:74px 0 84px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(244,99,30,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(244,99,30,.055) 1px,transparent 1px);
  background-size:52px 52px;
  mask-image:radial-gradient(circle at 50% 40%,#000 20%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 50% 40%,#000 20%,transparent 78%);
  pointer-events:none;
}
.hero-orb{
  position:absolute;border-radius:50%;filter:blur(52px);opacity:.5;pointer-events:none;
}
.orb-1{width:320px;height:320px;background:#ffb27a;top:-90px;right:6%;animation:float1 11s ease-in-out infinite}
.orb-2{width:250px;height:250px;background:#ffd9b8;bottom:-90px;left:4%;animation:float2 13s ease-in-out infinite}
@keyframes float1{0%,100%{transform:translateY(0)}50%{transform:translateY(26px)}}
@keyframes float2{0%,100%{transform:translateY(0) translateX(0)}50%{transform:translateY(-22px) translateX(16px)}}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:#fff;border:1px solid var(--orange-soft);
  color:var(--orange-deep);font-size:13px;font-weight:600;
  padding:7px 16px;border-radius:999px;margin-bottom:20px;
  box-shadow:0 4px 14px rgba(244,99,30,.10);
}
.eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--orange);display:inline-block;animation:pulse 1.8s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(244,99,30,.5)}70%{box-shadow:0 0 0 8px rgba(244,99,30,0)}}
.hero h1{
  font-size:clamp(30px,4.2vw,50px);line-height:1.18;
  font-weight:900;letter-spacing:-.5px;color:var(--ink);
  margin-bottom:20px;
}
.hero h1 .hl{
  position:relative;color:var(--orange);
  background:linear-gradient(100deg,var(--orange),#ff9350);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.hero-sub{
  font-size:16px;color:var(--ink-soft);line-height:1.85;
  max-width:540px;margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin-bottom:26px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:700;padding:13px 26px;border-radius:12px;
  cursor:pointer;border:none;transition:transform .2s,box-shadow .2s,background .2s;
}
.btn-primary{
  background:linear-gradient(135deg,var(--orange),#ff8b45);color:#fff;
  box-shadow:0 10px 24px rgba(244,99,30,.30);
}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 16px 32px rgba(244,99,30,.38)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{
  background:#fff;color:var(--ink);border:1.5px solid var(--line);
  box-shadow:0 4px 12px rgba(0,0,0,.04);
}
.btn-ghost:hover{border-color:var(--orange);color:var(--orange);transform:translateY(-3px);box-shadow:0 10px 22px rgba(244,99,30,.14)}
.hero-tags{display:flex;flex-wrap:wrap;gap:9px}
.hero-tags span{
  font-size:12.5px;color:var(--ink-soft);background:#fff;
  border:1px solid var(--line);padding:5px 13px;border-radius:999px;
  transition:.25s;
}
.hero-tags span:hover{background:var(--orange-light);color:var(--orange-deep);border-color:var(--orange-soft)}
.hero-panel{
  background:rgba(255,255,255,.78);
  backdrop-filter:blur(10px);
  border:1px solid rgba(244,99,30,.16);
  border-radius:22px;padding:26px;
  box-shadow:var(--shadow-lg);
  position:relative;
}
.panel-title{
  font-size:13px;font-weight:700;color:var(--ink-faint);
  letter-spacing:1.5px;text-transform:uppercase;margin-bottom:18px;
  display:flex;align-items:center;gap:8px;
}
.panel-title::after{content:"";flex:1;height:1px;background:var(--line)}
.model-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-bottom:20px}
.model-item{
  background:#fff;border:1px solid var(--line);border-radius:10px;
  padding:10px 12px;font-size:13px;color:var(--ink);
  display:flex;align-items:center;gap:8px;
  transition:transform .22s,border-color .22s,box-shadow .22s;
}
.model-item:hover{transform:translateY(-2px);border-color:var(--orange-soft);box-shadow:0 8px 18px rgba(244,99,30,.12)}
.model-item i{
  width:8px;height:8px;border-radius:50%;background:var(--orange);flex-shrink:0;
}
.model-more{text-align:center;font-size:12.5px;color:var(--ink-faint)}
.model-more b{color:var(--orange);font-size:15px}

/* ===== Stats bar ===== */
.stats-section{background:linear-gradient(180deg,#fffdfb,#fff7f1);padding:0 0 12px}
.stats-bar{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);overflow:hidden;
  margin-top:-34px;position:relative;z-index:5;
}
.stat{
  padding:26px 18px;text-align:center;position:relative;
  transition:background .25s;
}
.stat:hover{background:var(--orange-light)}
.stat:not(:last-child)::after{
  content:"";position:absolute;right:0;top:26%;height:48%;width:1px;background:var(--line);
}
.stat-num{
  font-size:28px;font-weight:900;color:var(--orange);line-height:1.2;
  letter-spacing:-.5px;
}
.stat-label{font-size:13px;color:var(--ink-soft);margin-top:4px}

/* ===== Section base ===== */
.section{padding:78px 0;position:relative}
.section-alt{background:linear-gradient(180deg,#fff8f3,#fffdfb)}
.section-head{max-width:720px;margin:0 auto 46px;text-align:center}
.section-tag{
  display:inline-block;font-size:13px;font-weight:700;color:var(--orange-deep);
  background:var(--orange-light);padding:5px 14px;border-radius:999px;
  margin-bottom:14px;letter-spacing:.5px;
}
.section-title{
  font-size:clamp(24px,3vw,34px);font-weight:900;color:var(--ink);
  line-height:1.3;letter-spacing:-.3px;margin-bottom:14px;
}
.section-desc{font-size:15.5px;color:var(--ink-soft);line-height:1.85}

/* ===== Cards ===== */
.card-grid{display:grid;gap:20px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.cap-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;transition:transform .28s,box-shadow .28s,border-color .28s;
  position:relative;overflow:hidden;
}
.cap-card::before{
  content:"";position:absolute;left:0;top:0;height:3px;width:0;
  background:linear-gradient(90deg,var(--orange),#ffb27a);transition:width .35s;
}
.cap-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:var(--orange-soft)}
.cap-card:hover::before{width:100%}
.cap-ico{
  width:46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--orange-light),#ffe6d6);
  color:var(--orange-deep);font-size:20px;font-weight:800;margin-bottom:16px;
}
.cap-card h3{font-size:17px;font-weight:800;color:var(--ink);margin-bottom:9px}
.cap-card p{font-size:14px;color:var(--ink-soft);line-height:1.8}

/* ===== Overview / about ===== */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
.about-visual{
  background:linear-gradient(150deg,#fff3ea,#ffe7d8);
  border-radius:22px;padding:32px;border:1px solid var(--orange-soft);
  position:relative;overflow:hidden;
}
.about-visual::after{
  content:"";position:absolute;width:180px;height:180px;border-radius:50%;
  background:radial-gradient(circle,rgba(244,99,30,.30),transparent 70%);
  top:-60px;right:-50px;
}
.ability-list{display:grid;gap:14px}
.ability-item{
  display:flex;gap:14px;background:#fff;border:1px solid var(--line);
  border-radius:12px;padding:16px 18px;transition:transform .22s,box-shadow .22s;
}
.ability-item:hover{transform:translateX(5px);box-shadow:0 8px 20px rgba(244,99,30,.10)}
.ability-num{
  font-size:13px;font-weight:900;color:var(--orange);flex-shrink:0;
  width:26px;height:26px;border-radius:8px;background:var(--orange-light);
  display:flex;align-items:center;justify-content:center;
}
.ability-item h4{font-size:15px;font-weight:800;color:var(--ink);margin-bottom:3px}
.ability-item p{font-size:13.5px;color:var(--ink-soft);line-height:1.7}

/* ===== Scene cards ===== */
.scene-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;transition:transform .28s,box-shadow .28s,border-color .28s;
}
.scene-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:var(--orange-soft)}
.scene-card h3{font-size:16px;font-weight:800;color:var(--ink);margin-bottom:8px;display:flex;align-items:center;gap:8px}
.scene-card h3::before{content:"";width:6px;height:16px;border-radius:3px;background:linear-gradient(180deg,var(--orange),#ffb27a)}
.scene-card p{font-size:13.5px;color:var(--ink-soft);line-height:1.8}

/* ===== Flow ===== */
.flow-wrap{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;position:relative}
.flow-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:22px 16px;text-align:center;position:relative;
  transition:transform .25s,box-shadow .25s;
}
.flow-item:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.flow-step{
  width:36px;height:36px;border-radius:50%;margin:0 auto 12px;
  background:linear-gradient(135deg,var(--orange),#ff9a5c);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:900;font-size:15px;
  box-shadow:0 6px 14px rgba(244,99,30,.28);
}
.flow-item h4{font-size:14.5px;font-weight:800;color:var(--ink);margin-bottom:6px}
.flow-item p{font-size:12.5px;color:var(--ink-soft);line-height:1.7}

/* ===== Compare ===== */
.compare-hero{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:26px;
  background:linear-gradient(120deg,#fff3ea,#ffe4d3);
  border:1px solid var(--orange-soft);border-radius:20px;
  padding:28px 26px;margin-bottom:30px;
}
.score-box{text-align:center;flex-shrink:0}
.score-num{font-size:52px;font-weight:900;color:var(--orange);line-height:1;letter-spacing:-2px}
.score-num small{font-size:18px;font-weight:700;color:var(--ink-faint);letter-spacing:0}
.score-stars{color:#ff9a1f;font-size:20px;letter-spacing:3px;margin-top:6px}
.score-label{font-size:13.5px;color:var(--ink-soft);font-weight:600}
.compare-word{flex:1;min-width:220px}
.compare-word h3{font-size:20px;font-weight:900;color:var(--ink);margin-bottom:6px}
.compare-word p{font-size:14px;color:var(--ink-soft);line-height:1.8}
.table-wrap{
  overflow-x:auto;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);box-shadow:var(--shadow);
}
table.compare{width:100%;border-collapse:collapse;min-width:640px;font-size:14px}
table.compare thead th{
  background:linear-gradient(135deg,var(--orange),#ff8b45);color:#fff;
  font-weight:700;padding:15px 16px;text-align:left;white-space:nowrap;
}
table.compare thead th:first-child{border-top-left-radius:14px}
table.compare thead th:last-child{border-top-right-radius:14px}
table.compare td{padding:14px 16px;border-bottom:1px solid var(--line);color:var(--ink-soft);vertical-align:top}
table.compare tbody tr:last-child td{border-bottom:none}
table.compare tbody tr:hover{background:#fffaf6}
table.compare td:first-child{font-weight:700;color:var(--ink)}
table.compare .good{color:var(--orange-deep);font-weight:700}

/* ===== Reviews ===== */
.review-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;transition:transform .28s,box-shadow .28s;
  display:flex;flex-direction:column;gap:14px;
}
.review-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.review-top{display:flex;align-items:center;gap:12px}
.avatar{
  width:44px;height:44px;border-radius:50%;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  font-weight:900;font-size:16px;color:#fff;
  background:linear-gradient(135deg,var(--orange),#ffa15e);
}
.review-name{font-size:14.5px;font-weight:800;color:var(--ink)}
.review-role{font-size:12.5px;color:var(--ink-faint)}
.review-stars{color:#ff9a1f;font-size:13px;letter-spacing:2px;margin-left:auto}
.review-text{font-size:14px;color:var(--ink-soft);line-height:1.85}

/* ===== 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 .28s,box-shadow .28s;
}
.case-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.case-media{
  aspect-ratio:16/10;overflow:hidden;background:var(--orange-light);
}
.case-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.case-card:hover .case-media img{transform:scale(1.06)}
.case-body{padding:18px 20px}
.case-body h3{font-size:16px;font-weight:800;color:var(--ink);margin-bottom:7px}
.case-body p{font-size:13.5px;color:var(--ink-soft);line-height:1.75}

/* ===== Articles ===== */
.article-list{display:grid;gap:14px}
.article-item{
  display:flex;align-items:center;gap:16px;
  background:#fff;border:1px solid var(--line);border-radius:12px;
  padding:16px 20px;transition:transform .22s,box-shadow .22s,border-color .22s;
}
.article-item:hover{transform:translateX(5px);border-color:var(--orange-soft);box-shadow:0 8px 20px rgba(244,99,30,.10)}
.article-badge{
  flex-shrink:0;font-size:12px;font-weight:700;color:var(--orange-deep);
  background:var(--orange-light);padding:4px 12px;border-radius:999px;
}
.article-item span.article-title{font-size:14.5px;color:var(--ink);font-weight:600}
.article-item .arrow{margin-left:auto;color:var(--orange);font-weight:800;flex-shrink:0}

/* ===== Form ===== */
.form-section{
  background:linear-gradient(150deg,#fff6ef,#ffe9dc);
  border:1px solid var(--orange-soft);border-radius:24px;
  padding:44px;display:grid;grid-template-columns:1fr 1.1fr;gap:44px;align-items:start;
}
.form-info h2{font-size:clamp(22px,2.6vw,30px);font-weight:900;color:var(--ink);margin-bottom:14px;line-height:1.3}
.form-info p{font-size:14.5px;color:var(--ink-soft);line-height:1.85;margin-bottom:22px}
.contact-lines{display:grid;gap:12px}
.contact-line{
  display:flex;align-items:center;gap:12px;font-size:14px;color:var(--ink);
  background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px 16px;
}
.contact-line b{color:var(--orange-deep);font-weight:700}
.form-card{background:#fff;border-radius:18px;padding:28px;box-shadow:var(--shadow)}
.form-card h3{font-size:17px;font-weight:800;color:var(--ink);margin-bottom:18px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:14px}
.form-field{display:flex;flex-direction:column;gap:6px}
.form-field label{font-size:13px;font-weight:700;color:var(--ink-soft)}
.form-field input,.form-field select,.form-field textarea{
  width:100%;font-family:inherit;font-size:14px;color:var(--ink);
  background:#fffdfb;border:1px solid var(--line);border-radius:10px;
  padding:11px 14px;transition:border-color .2s,box-shadow .2s;outline:none;
}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{
  border-color:var(--orange);box-shadow:0 0 0 3px rgba(244,99,30,.12);
}
.form-field textarea{resize:vertical;min-height:92px}
.form-submit{
  width:100%;margin-top:6px;padding:14px;border-radius:12px;border:none;cursor:pointer;
  background:linear-gradient(135deg,var(--orange),#ff8b45);color:#fff;
  font-size:15px;font-weight:800;font-family:inherit;
  transition:transform .2s,box-shadow .2s;
  box-shadow:0 10px 24px rgba(244,99,30,.28);
}
.form-submit:hover{transform:translateY(-2px);box-shadow:0 15px 30px rgba(244,99,30,.36)}
.form-tip{font-size:12px;color:var(--ink-faint);margin-top:12px;text-align:center}

/* ===== Token price ===== */
.price-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.price-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 20px;text-align:center;position:relative;
  transition:transform .28s,box-shadow .28s,border-color .28s;
}
.price-card.hot{border-color:var(--orange);box-shadow:0 10px 26px rgba(244,99,30,.16)}
.price-card.hot::after{
  content:"热门";position:absolute;top:-1px;right:-1px;
  background:linear-gradient(135deg,var(--orange),#ff8b45);color:#fff;
  font-size:11px;font-weight:700;padding:4px 12px;border-radius:0 14px 0 12px;
}
.price-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.price-name{font-size:15px;font-weight:800;color:var(--ink);margin-bottom:8px}
.price-value{font-size:26px;font-weight:900;color:var(--orange);line-height:1.1;margin-bottom:4px}
.price-unit{font-size:12px;color:var(--ink-faint);margin-bottom:12px}
.price-desc{font-size:12.5px;color:var(--ink-soft);line-height:1.7}

/* ===== Network / timeline ===== */
.network-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.net-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;transition:transform .25s,box-shadow .25s;
}
.net-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.net-card h3{font-size:15.5px;font-weight:800;color:var(--ink);margin-bottom:8px;display:flex;align-items:center;gap:9px}
.net-card h3 i{width:9px;height:9px;border-radius:50%;background:var(--orange);display:inline-block;flex-shrink:0}
.net-card p{font-size:13.5px;color:var(--ink-soft);line-height:1.8}

/* ===== FAQ ===== */
.faq-list{max-width:860px;margin:0 auto;display:grid;gap:12px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;
  transition:border-color .25s,box-shadow .25s;
}
.faq-item.open{border-color:var(--orange-soft);box-shadow:0 8px 22px rgba(244,99,30,.10)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:17px 20px;background:none;border:none;cursor:pointer;text-align:left;
  font-family:inherit;font-size:15px;font-weight:700;color:var(--ink);
  transition:color .2s;
}
.faq-q:hover{color:var(--orange-deep)}
.faq-icon{
  flex-shrink:0;width:24px;height:24px;border-radius:50%;
  background:var(--orange-light);color:var(--orange);font-size:15px;font-weight:700;
  display:flex;align-items:center;justify-content:center;transition:transform .3s,background .3s;
}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--orange);color:#fff}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .35s ease;
  font-size:14px;color:var(--ink-soft);line-height:1.85;
  padding:0 20px;
}
.faq-item.open .faq-a{max-height:320px;padding-bottom:18px}

/* ===== Footer ===== */
.site-footer{
  background:#241a12;color:#d9cbbf;padding:52px 0 0;
  position:relative;overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--orange),#ffb27a,var(--orange));
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:36px}
.footer-brand .brand-name{color:#fff}
.footer-brand p{font-size:13.5px;color:#b8a89b;line-height:1.85;margin:14px 0}
.footer-col h4{font-size:14px;font-weight:800;color:#fff;margin-bottom:14px;padding-bottom:9px;position:relative}
.footer-col h4::after{content:"";position:absolute;left:0;bottom:0;width:26px;height:2px;background:var(--orange);border-radius:2px}
.footer-col ul{display:grid;gap:9px}
.footer-col ul li a{font-size:13px;color:#b8a89b;transition:color .2s,padding-left .2s}
.footer-col ul li a:hover{color:#ff9a5c;padding-left:4px}
.footer-contact p{font-size:13px;color:#b8a89b;margin-bottom:9px;line-height:1.7}
.footer-contact p b{color:#ffb27a;font-weight:700}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);
  padding:20px 0;display:flex;flex-wrap:wrap;gap:14px;
  align-items:center;justify-content:space-between;
  font-size:12.5px;color:#a1907f;
}
.friend-links{display:flex;flex-wrap:wrap;gap:8px 16px;margin-bottom:18px}
.friend-links a{font-size:12.5px;color:#b8a89b;transition:color .2s}
.friend-links a:hover{color:#ff9a5c}

/* ===== Floating ===== */
.back-top{
  position:fixed;right:22px;bottom:96px;z-index:90;
  width:46px;height:46px;border-radius:12px;border:none;cursor:pointer;
  background:#fff;color:var(--orange-deep);box-shadow:0 8px 22px rgba(244,99,30,.22);
  font-size:18px;font-weight:900;display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .3s,visibility .3s,transform .3s,background .2s,color .2s;
}
.back-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.back-top:hover{background:var(--orange);color:#fff}
.float-service{
  position:fixed;right:22px;bottom:30px;z-index:90;
  width:54px;height:54px;border-radius:16px;border:none;cursor:pointer;
  background:linear-gradient(135deg,var(--orange),#ff8b45);color:#fff;
  box-shadow:0 12px 28px rgba(244,99,30,.38);
  display:flex;align-items:center;justify-content:center;
  transition:transform .25s,box-shadow .25s;
}
.float-service:hover{transform:translateY(-4px) scale(1.04);box-shadow:0 18px 34px rgba(244,99,30,.46)}
.float-panel{
  position:fixed;right:22px;bottom:96px;z-index:95;
  width:250px;background:#fff;border-radius:18px;padding:20px;
  box-shadow:0 20px 50px rgba(60,30,10,.22);
  border:1px solid var(--line);
  opacity:0;visibility:hidden;transform:translateY(14px) scale(.97);
  transition:opacity .28s,visibility .28s,transform .28s;
}
.float-panel.show{opacity:1;visibility:visible;transform:translateY(0) scale(1)}
.float-panel h4{font-size:14.5px;font-weight:800;color:var(--ink);margin-bottom:12px;text-align:center}
.float-panel img{width:100%;border-radius:10px;border:1px solid var(--line)}
.float-panel p{font-size:12px;color:var(--ink-soft);text-align:center;margin-top:10px;line-height:1.7}
.float-panel .qq-line{font-size:12.5px;color:var(--ink);text-align:center;margin-top:6px}
.float-panel .qq-line b{color:var(--orange-deep)}

/* ===== Reveal ===== */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .65s ease,transform .65s ease}
.reveal.visible{opacity:1;transform:translateY(0)}
.reveal-d1{transition-delay:.08s}
.reveal-d2{transition-delay:.16s}
.reveal-d3{transition-delay:.24s}

/* ===== Responsive ===== */
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:36px}
  .hero-panel{max-width:520px}
  .about-grid{grid-template-columns:1fr;gap:32px}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .price-grid{grid-template-columns:repeat(2,1fr)}
  .flow-wrap{grid-template-columns:repeat(3,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .form-section{grid-template-columns:1fr;padding:32px}
}
@media (max-width:860px){
  .nav-links{
    position:fixed;top:66px;left:0;right:0;z-index:99;
    background:#fff;flex-direction:column;align-items:stretch;gap:0;
    padding:10px 16px 18px;border-bottom:1px solid var(--line);
    box-shadow:0 16px 32px rgba(244,99,30,.12);
    max-height:0;overflow:hidden;opacity:0;visibility:hidden;
    transition:max-height .35s ease,opacity .3s,visibility .3s,padding .3s;
  }
  .nav-links.open{max-height:520px;opacity:1;visibility:visible;padding:10px 16px 18px}
  .nav-links a{padding:11px 8px;border-radius:8px;font-size:14.5px}
  .nav-links .nav-cta{margin-top:8px}
  .menu-toggle{display:flex}
  .nav-wrap .nav-cta{display:none}
  .stats-bar{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(2)::after{display:none}
  .grid-3,.grid-2{grid-template-columns:1fr 1fr}
  .case-grid{grid-template-columns:1fr 1fr}
  .network-grid{grid-template-columns:1fr 1fr}
  .section{padding:60px 0}
  .hero{padding:52px 0 66px}
}
@media (max-width:640px){
  .container{padding:0 16px}
  .brand-name{font-size:16px}
  .ai-page-logo{height:30px}
  .hero-actions{gap:10px}
  .btn{padding:12px 20px;font-size:14px;flex:1 1 auto;min-width:140px}
  .grid-3,.grid-2,.grid-4,.case-grid,.network-grid,.price-grid,.flow-wrap{grid-template-columns:1fr}
  .stats-bar{margin-top:-24px}
  .stat{padding:20px 12px}
  .stat-num{font-size:24px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .form-section{padding:24px 18px;border-radius:18px}
  .form-card{padding:22px 18px}
  .form-row{grid-template-columns:1fr}
  .compare-hero{padding:22px 18px;gap:18px}
  .score-num{font-size:42px}
  .section-head{margin-bottom:34px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .float-panel{right:14px;left:14px;width:auto;bottom:88px}
  .float-service,.back-top{right:14px}
  .back-top{bottom:96px}
  .float-service{bottom:26px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition-duration:.01ms !important}
  .reveal{opacity:1;transform:none}
}