:root{
  --red:#e0182d;
  --red-deep:#a80d1e;
  --red-light:#ff3b4e;
  --ink:#16181d;
  --ink-2:#3a3f47;
  --gray:#6a717c;
  --line:#e9ebef;
  --bg:#ffffff;
  --bg-soft:#fbf7f6;
  --bg-warm:#fff1ef;
  --radius:16px;
  --shadow:0 10px 30px rgba(224,24,45,.08);
  --shadow-hover:0 18px 44px rgba(224,24,45,.16);
  --max:1200px;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Helvetica Neue",Arial,sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.7;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;height:auto;display:block;}
ul{list-style:none;}
.container{max-width:var(--max);margin:0 auto;padding:0 24px;}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:16px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.ai-page-logo{height:38px;width:auto;max-width:160px;object-fit:contain;}
.brand-name{font-size:19px;font-weight:800;letter-spacing:.5px;color:var(--ink);}
.brand-name span{color:var(--red);}
.nav-links{display:flex;align-items:center;gap:0;flex-wrap:wrap;}
.nav-links a{
  padding:8px 13px;font-size:14.5px;color:var(--ink-2);font-weight:500;
  border-radius:8px;transition:color .2s,background .2s;white-space:nowrap;
}
.nav-links a:hover{color:var(--red);background:var(--bg-warm);}
.header-cta{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:10px;font-weight:600;font-size:15px;
  border:1.5px solid transparent;cursor:pointer;transition:transform .2s,box-shadow .2s,background .2s,color .2s;
  font-family:inherit;line-height:1.2;
}
.btn-primary{background:linear-gradient(135deg,var(--red) 0%,var(--red-deep) 100%);color:#fff;box-shadow:0 8px 20px rgba(224,24,45,.28);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(224,24,45,.4);}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink);}
.btn-ghost:hover{border-color:var(--red);color:var(--red);transform:translateY(-2px);}
.btn-lg{padding:15px 32px;font-size:16.5px;border-radius:12px;}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px;width:44px;height:44px;border-radius:8px;}
.nav-toggle span{display:block;width:24px;height:2.5px;background:var(--ink);margin:5px auto;border-radius:2px;transition:.3s;}

/* ===== Hero ===== */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,#7d0713 0%,#b10f22 38%,#e0182d 72%,#ff4a5a 100%);
  color:#fff;padding:90px 0 100px;
}
.hero::before,.hero::after{content:"";position:absolute;border-radius:50%;pointer-events:none;}
.hero::before{width:520px;height:520px;background:radial-gradient(circle,rgba(255,255,255,.16),transparent 70%);top:-180px;right:-120px;}
.hero::after{width:380px;height:380px;background:radial-gradient(circle,rgba(255,255,255,.10),transparent 70%);bottom:-160px;left:-100px;}
.hero-grid{
  position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(ellipse at 50% 40%,#000 40%,transparent 78%);
  -webkit-mask-image:radial-gradient(ellipse at 50% 40%,#000 40%,transparent 78%);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.3);
  padding:7px 16px;border-radius:999px;font-size:13.5px;font-weight:600;margin-bottom:22px;
  backdrop-filter:blur(6px);
}
.hero-badge i{width:7px;height:7px;border-radius:50%;background:#ffe14d;box-shadow:0 0 0 0 rgba(255,225,77,.7);animation:pulse 2s infinite;}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(255,225,77,.7);}70%{box-shadow:0 0 0 10px rgba(255,225,77,0);}100%{box-shadow:0 0 0 0 rgba(255,225,77,0);}}
.hero h1{font-size:clamp(30px,4.4vw,52px);line-height:1.22;font-weight:800;letter-spacing:.5px;margin-bottom:20px;}
.hero h1 em{font-style:normal;color:#ffe14d;position:relative;}
.hero-sub{font-size:clamp(15px,1.6vw,18px);color:rgba(255,255,255,.9);max-width:600px;margin-bottom:34px;line-height:1.8;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.btn-light{background:#fff;color:var(--red);box-shadow:0 10px 26px rgba(0,0,0,.22);}
.btn-light:hover{transform:translateY(-3px);box-shadow:0 16px 34px rgba(0,0,0,.3);}
.btn-outline-light{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.5);color:#fff;}
.btn-outline-light:hover{background:rgba(255,255,255,.2);transform:translateY(-3px);}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;}
.hero-tags span{font-size:13px;padding:6px 13px;border-radius:999px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);color:rgba(255,255,255,.92);}
.hero-panel{
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.25);
  border-radius:20px;padding:26px;backdrop-filter:blur(14px);
  box-shadow:0 24px 60px rgba(0,0,0,.2);
}
.hero-panel h3{font-size:15px;font-weight:700;letter-spacing:1px;margin-bottom:18px;color:#ffe14d;}
.hero-metrics{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
.hero-metric{background:rgba(255,255,255,.1);border-radius:12px;padding:16px;border:1px solid rgba(255,255,255,.16);transition:background .25s,transform .25s;}
.hero-metric:hover{background:rgba(255,255,255,.18);transform:translateY(-3px);}
.hero-metric b{display:block;font-size:26px;font-weight:800;line-height:1.2;color:#fff;}
.hero-metric small{font-size:12.5px;color:rgba(255,255,255,.8);}
.hero-mini-list{margin-top:18px;padding-top:18px;border-top:1px solid rgba(255,255,255,.2);display:flex;flex-direction:column;gap:10px;}
.hero-mini-list div{display:flex;align-items:center;gap:10px;font-size:14px;color:rgba(255,255,255,.92);}
.hero-mini-list div::before{content:"";width:6px;height:6px;border-radius:50%;background:#ffe14d;flex-shrink:0;}

/* ===== Section base ===== */
section{padding:88px 0;}
.section-soft{background:var(--bg-soft);}
.section-warm{background:linear-gradient(180deg,#fff 0%,var(--bg-warm) 100%);}
.section-head{max-width:820px;margin:0 auto 50px;text-align:center;}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:2px;color:var(--red);
  background:var(--bg-warm);padding:5px 16px;border-radius:999px;margin-bottom:16px;text-transform:uppercase;
}
.section-head h2{font-size:clamp(24px,3vw,36px);font-weight:800;line-height:1.3;margin-bottom:14px;letter-spacing:.3px;}
.section-head p{color:var(--gray);font-size:16px;line-height:1.85;}
.section-head.left{text-align:left;margin-left:0;}

/* ===== Reveal animation ===== */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease;}
.reveal.visible{opacity:1;transform:translateY(0);}

/* ===== About ===== */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.about-text h2{font-size:clamp(24px,3vw,34px);font-weight:800;margin-bottom:18px;line-height:1.32;}
.about-text p{color:var(--ink-2);margin-bottom:16px;font-size:15.5px;}
.about-points{margin-top:24px;display:flex;flex-direction:column;gap:14px;}
.about-points li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--ink-2);}
.about-points li::before{
  content:"✓";flex-shrink:0;width:22px;height:22px;border-radius:50%;
  background:var(--bg-warm);color:var(--red);font-weight:800;font-size:13px;
  display:flex;align-items:center;justify-content:center;margin-top:2px;
}
.about-visual{display:grid;grid-template-columns:1fr 1fr;grid-template-rows:auto auto;gap:16px;}
.about-card{
  border-radius:var(--radius);padding:24px;background:#fff;border:1px solid var(--line);
  box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s;
}
.about-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);}
.about-card.tall{grid-row:span 2;background:linear-gradient(160deg,#fff5f3,#fff);}
.about-card b{display:block;font-size:26px;color:var(--red);font-weight:800;margin-bottom:4px;}
.about-card span{font-size:13.5px;color:var(--gray);}
.about-card h4{font-size:16px;margin-bottom:10px;}
.about-card p{font-size:13.5px;color:var(--gray);line-height:1.7;}

/* ===== Data cards ===== */
.stats-row{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.stat-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 24px;
  position:relative;overflow:hidden;transition:transform .3s,box-shadow .3s;
}
.stat-card::after{content:"";position:absolute;top:0;left:0;width:100%;height:4px;background:linear-gradient(90deg,var(--red),var(--red-light));}
.stat-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);}
.stat-card b{display:block;font-size:38px;font-weight:800;color:var(--red);line-height:1.15;margin-bottom:6px;}
.stat-card span{font-size:14.5px;color:var(--gray);}

/* ===== Services ===== */
.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.service-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;
  transition:transform .3s,box-shadow .3s,border-color .3s;position:relative;overflow:hidden;
}
.service-card::before{
  content:"";position:absolute;top:0;left:0;width:0;height:3px;
  background:linear-gradient(90deg,var(--red),var(--red-light));transition:width .35s;
}
.service-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);border-color:#f6d5d3;}
.service-card:hover::before{width:100%;}
.service-icon{
  width:52px;height:52px;border-radius:14px;background:linear-gradient(135deg,#fff1ef,#ffe0dc);
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;color:var(--red);
  font-weight:800;font-size:20px;
}
.service-card h3{font-size:18px;font-weight:700;margin-bottom:10px;}
.service-card p{font-size:14.5px;color:var(--gray);line-height:1.75;}

/* ===== One-stop tabs ===== */
.tab-bar{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:40px;}
.tab-btn{
  padding:10px 20px;border-radius:999px;border:1.5px solid var(--line);background:#fff;
  font-size:14.5px;font-weight:600;color:var(--ink-2);cursor:pointer;transition:.25s;font-family:inherit;
}
.tab-btn.active,.tab-btn:hover{background:var(--red);border-color:var(--red);color:#fff;box-shadow:0 8px 20px rgba(224,24,45,.25);}
.tab-panel{display:none;}
.tab-panel.active{display:block;animation:fadeIn .4s ease;}
@keyframes fadeIn{from{opacity:0;transform:translateY(12px);}to{opacity:1;transform:translateY(0);}}
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.scene-card{
  background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px;
  transition:transform .3s,box-shadow .3s;
}
.scene-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);}
.scene-card h4{font-size:16.5px;font-weight:700;margin-bottom:8px;color:var(--ink);}
.scene-card h4::before{content:"◆";color:var(--red);font-size:10px;margin-right:8px;vertical-align:middle;}
.scene-card p{font-size:14px;color:var(--gray);line-height:1.75;}

/* ===== Model wall ===== */
.model-wall{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;}
.model-chip{
  padding:10px 20px;border-radius:10px;background:#fff;border:1px solid var(--line);
  font-size:14px;font-weight:600;color:var(--ink-2);transition:.25s;
}
.model-chip:hover{background:var(--red);color:#fff;border-color:var(--red);transform:translateY(-3px);box-shadow:0 8px 18px rgba(224,24,45,.22);}

/* ===== Process ===== */
.process-line{display:grid;grid-template-columns:repeat(5,1fr);gap:20px;position:relative;}
.process-line::before{
  content:"";position:absolute;top:32px;left:8%;right:8%;height:2px;
  background:linear-gradient(90deg,var(--red),#ffc2bd);z-index:0;
}
.process-step{position:relative;z-index:1;text-align:center;}
.process-num{
  width:64px;height:64px;border-radius:50%;margin:0 auto 18px;
  background:#fff;border:2px solid var(--red);color:var(--red);
  display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:800;
  box-shadow:0 8px 22px rgba(224,24,45,.18);transition:transform .3s,background .3s,color .3s;
}
.process-step:hover .process-num{background:var(--red);color:#fff;transform:scale(1.08);}
.process-step h4{font-size:16px;font-weight:700;margin-bottom:8px;}
.process-step p{font-size:13.5px;color:var(--gray);line-height:1.7;}

/* ===== Network ===== */
.network-wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;}
.network-list{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.network-item{
  background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px 20px;
  display:flex;align-items:center;gap:12px;transition:.3s;
}
.network-item:hover{border-color:var(--red);transform:translateX(5px);box-shadow:var(--shadow);}
.network-item i{
  width:10px;height:10px;border-radius:50%;background:var(--red);flex-shrink:0;box-shadow:0 0 0 4px rgba(224,24,45,.12);
}
.network-item div b{display:block;font-size:15px;}
.network-item div span{font-size:12.5px;color:var(--gray);}

/* ===== Cases ===== */
.cases-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.case-card{
  border-radius:var(--radius);overflow:hidden;background:#fff;border:1px solid var(--line);
  transition:transform .35s,box-shadow .35s;
}
.case-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-hover);}
.case-media{position:relative;overflow:hidden;aspect-ratio:16/10;background:var(--bg-warm);}
.case-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s;}
.case-card:hover .case-media img{transform:scale(1.06);}
.case-tag{
  position:absolute;top:14px;left:14px;background:rgba(224,24,45,.92);color:#fff;
  font-size:12px;font-weight:700;padding:5px 12px;border-radius:999px;
}
.case-body{padding:22px;}
.case-body h4{font-size:17px;font-weight:700;margin-bottom:8px;}
.case-body p{font-size:14px;color:var(--gray);line-height:1.7;margin-bottom:14px;}
.case-meta{display:flex;gap:16px;font-size:12.5px;color:var(--red);font-weight:600;}
.case-square{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:24px;}
.case-square .case-media{aspect-ratio:1/1;}

/* ===== Compare ===== */
.compare-box{background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;box-shadow:var(--shadow);}
.compare-head{
  display:grid;grid-template-columns:1.1fr 1fr 1fr;background:linear-gradient(135deg,var(--red),var(--red-deep));
  color:#fff;font-weight:700;font-size:15px;
}
.compare-head div{padding:18px 22px;}
.compare-head div:first-child{opacity:.85;}
.compare-row{display:grid;grid-template-columns:1.1fr 1fr 1fr;border-bottom:1px solid var(--line);transition:background .2s;}
.compare-row:hover{background:#fdf6f5;}
.compare-row div{padding:16px 22px;font-size:14.5px;color:var(--ink-2);}
.compare-row div:nth-child(2){background:rgba(224,24,45,.05);color:var(--red);font-weight:600;}
.compare-row div:last-child{color:var(--gray);}
.score-panel{
  display:flex;flex-wrap:wrap;gap:32px;align-items:center;justify-content:center;
  margin-top:36px;padding:32px;background:linear-gradient(135deg,#fff5f3,#fff);
  border-radius:20px;border:1px solid #f6d5d3;
}
.score-main{text-align:center;}
.score-main b{font-size:56px;font-weight:800;color:var(--red);line-height:1;}
.score-main b small{font-size:22px;color:var(--gray);font-weight:600;}
.score-main span{display:block;margin-top:8px;color:var(--gray);font-size:14px;}
.score-stars{font-size:26px;color:#ffb400;letter-spacing:4px;margin-top:10px;}
.score-desc{flex:1;min-width:260px;font-size:15px;color:var(--ink-2);}
.score-desc strong{color:var(--red);}

/* ===== Table ===== */
.table-scroll{overflow-x:auto;border-radius:14px;border:1px solid var(--line);background:#fff;}
table{width:100%;border-collapse:collapse;min-width:680px;}
thead{background:var(--bg-warm);}
th,td{padding:15px 18px;text-align:left;font-size:14.5px;border-bottom:1px solid var(--line);}
th{font-weight:700;color:var(--ink);}
tbody tr:hover{background:#fdf6f5;}
td.price{color:var(--red);font-weight:700;}

/* ===== Reviews ===== */
.reviews-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.review-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;
  position:relative;transition:transform .3s,box-shadow .3s;
}
.review-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);}
.review-card::before{
  content:"“";position:absolute;top:6px;right:22px;font-size:64px;color:#ffe0dc;
  font-family:Georgia,serif;line-height:1;font-weight:700;
}
.review-stars{color:#ffb400;font-size:15px;letter-spacing:2px;margin-bottom:14px;}
.review-text{font-size:14.5px;color:var(--ink-2);line-height:1.8;margin-bottom:20px;position:relative;z-index:1;}
.review-user{display:flex;align-items:center;gap:12px;}
.review-avatar{
  width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,var(--red),var(--red-light));
  color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center;font-size:16px;flex-shrink:0;
}
.review-user b{display:block;font-size:14.5px;}
.review-user span{font-size:12.5px;color:var(--gray);}

/* ===== Match & form ===== */
.match-wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:48px;align-items:start;}
.match-info h2{font-size:clamp(24px,3vw,32px);font-weight:800;margin-bottom:16px;line-height:1.35;}
.match-info p{color:var(--gray);margin-bottom:26px;font-size:15px;}
.match-options{display:flex;flex-direction:column;gap:14px;}
.match-option{
  display:flex;gap:14px;padding:18px 20px;background:#fff;border:1px solid var(--line);border-radius:12px;
  transition:.25s;
}
.match-option:hover{border-color:var(--red);box-shadow:var(--shadow);}
.match-option i{
  width:36px;height:36px;border-radius:10px;background:var(--bg-warm);color:var(--red);
  display:flex;align-items:center;justify-content:center;font-weight:800;flex-shrink:0;font-size:15px;
}
.match-option b{display:block;font-size:15px;margin-bottom:2px;}
.match-option span{font-size:13.5px;color:var(--gray);}
.form-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:34px;box-shadow:var(--shadow);}
.form-card h3{font-size:20px;font-weight:800;margin-bottom:6px;}
.form-card>p{font-size:14px;color:var(--gray);margin-bottom:24px;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13.5px;font-weight:600;margin-bottom:7px;color:var(--ink-2);}
.field label .req{color:var(--red);}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border:1.5px solid var(--line);border-radius:10px;
  font-size:14.5px;font-family:inherit;color:var(--ink);background:#fff;transition:border-color .2s,box-shadow .2s;
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--red);box-shadow:0 0 0 3px rgba(224,24,45,.1);
}
.field textarea{resize:vertical;min-height:110px;}
.form-card .btn{width:100%;margin-top:6px;}
.form-note{font-size:12.5px;color:var(--gray);text-align:center;margin-top:14px;}

/* ===== Token compare / pricing ===== */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.price-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px 28px;
  transition:transform .3s,box-shadow .3s,border-color .3s;position:relative;
}
.price-card.featured{border-color:var(--red);box-shadow:0 20px 44px rgba(224,24,45,.14);}
.price-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);}
.price-badge{
  position:absolute;top:-13px;left:50%;transform:translateX(-50%);
  background:var(--red);color:#fff;font-size:12.5px;font-weight:700;padding:4px 16px;border-radius:999px;white-space:nowrap;
}
.price-card h3{font-size:18px;font-weight:700;margin-bottom:8px;}
.price-card .price-desc{font-size:13.5px;color:var(--gray);margin-bottom:20px;}
.price-amount{font-size:34px;font-weight:800;color:var(--red);line-height:1.1;margin-bottom:4px;}
.price-amount small{font-size:14px;color:var(--gray);font-weight:500;}
.price-features{margin:20px 0 24px;display:flex;flex-direction:column;gap:10px;}
.price-features li{font-size:14px;color:var(--ink-2);display:flex;gap:8px;align-items:flex-start;}
.price-features li::before{content:"✓";color:var(--red);font-weight:800;flex-shrink:0;}

/* ===== Timeline ===== */
.timeline{position:relative;max-width:820px;margin:0 auto;padding-left:34px;}
.timeline::before{content:"";position:absolute;left:9px;top:6px;bottom:6px;width:2px;background:linear-gradient(180deg,var(--red),#ffd0cc);}
.timeline-item{position:relative;margin-bottom:30px;}
.timeline-item:last-child{margin-bottom:0;}
.timeline-item::before{
  content:"";position:absolute;left:-33px;top:4px;width:16px;height:16px;border-radius:50%;
  background:#fff;border:3px solid var(--red);box-shadow:0 0 0 4px rgba(224,24,45,.1);
}
.timeline-item b{display:block;font-size:16px;margin-bottom:5px;}
.timeline-item span{font-size:13px;color:var(--red);font-weight:600;}
.timeline-item p{font-size:14.5px;color:var(--gray);margin-top:6px;}

/* ===== Help / FAQ ===== */
.faq-list{max-width:860px;margin:0 auto;display:flex;flex-direction:column;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:#f6c9c4;box-shadow:var(--shadow);}
.faq-q{
  width:100%;display:flex;justify-content:space-between;align-items:center;gap:16px;
  padding:20px 24px;background:none;border:none;cursor:pointer;font-family:inherit;
  font-size:15.5px;font-weight:600;color:var(--ink);text-align:left;transition:color .2s;
}
.faq-q:hover{color:var(--red);}
.faq-icon{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;background:var(--bg-warm);color:var(--red);
  display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;
  transition:transform .3s,background .3s,color .3s;line-height:1;
}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--red);color:#fff;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;}
.faq-a p{padding:0 24px 22px;font-size:14.5px;color:var(--gray);line-height:1.85;}

/* ===== Articles ===== */
.article-list{display:flex;flex-direction:column;gap:16px;max-width:900px;margin:0 auto;}
.article-item{
  display:flex;gap:20px;align-items:center;padding:22px 26px;background:#fff;border:1px solid var(--line);
  border-radius:14px;transition:.3s;
}
.article-item:hover{border-color:var(--red);transform:translateX(5px);box-shadow:var(--shadow);}
.article-date{
  flex-shrink:0;width:74px;height:74px;border-radius:12px;background:var(--bg-warm);
  display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;
}
.article-date b{font-size:22px;font-weight:800;color:var(--red);line-height:1;}
.article-date span{font-size:12px;color:var(--gray);margin-top:2px;}
.article-body{flex:1;min-width:0;}
.article-body h4{font-size:16.5px;font-weight:700;margin-bottom:5px;}
.article-body p{font-size:13.5px;color:var(--gray);line-height:1.7;}
.article-more{flex-shrink:0;font-size:13.5px;font-weight:700;color:var(--red);}

/* ===== Tags cloud ===== */
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;}
.tag-cloud a{
  padding:8px 16px;border-radius:999px;background:#fff;border:1px solid var(--line);
  font-size:13.5px;color:var(--ink-2);transition:.25s;
}
.tag-cloud a:hover{background:var(--red);color:#fff;border-color:var(--red);transform:translateY(-2px);}

/* ===== Contact ===== */
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-bottom:40px;}
.contact-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;text-align:center;
  transition:transform .3s,box-shadow .3s;
}
.contact-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);}
.contact-card h4{font-size:16px;font-weight:700;margin-bottom:10px;}
.contact-card p{font-size:14.5px;color:var(--gray);word-break:break-all;}
.contact-card a{color:var(--red);font-weight:600;}
.qr-wrap{display:flex;justify-content:center;margin-top:14px;}
.qr-wrap img{width:150px;height:150px;object-fit:cover;border-radius:12px;border:1px solid var(--line);padding:6px;background:#fff;}

/* ===== CTA banner ===== */
.cta-banner{
  background:linear-gradient(135deg,#7d0713 0%,#c11026 55%,#e0182d 100%);
  color:#fff;text-align:center;padding:70px 24px;border-radius:24px;position:relative;overflow:hidden;
}
.cta-banner::before{content:"";position:absolute;width:400px;height:400px;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.15),transparent 70%);top:-150px;right:-100px;}
.cta-banner h2{font-size:clamp(24px,3.2vw,36px);font-weight:800;margin-bottom:16px;position:relative;}
.cta-banner p{font-size:16px;color:rgba(255,255,255,.9);margin-bottom:30px;max-width:640px;margin-left:auto;margin-right:auto;position:relative;}
.cta-banner .hero-actions{justify-content:center;position:relative;}

/* ===== Footer ===== */
.site-footer{background:#16181d;color:#c9cdd4;padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px;border-bottom:1px solid #2a2d34;}
.footer-brand .brand-name{color:#fff;margin-bottom:14px;display:inline-block;}
.footer-brand p{font-size:14px;color:#8b9099;line-height:1.8;margin-bottom:18px;}
.footer-col h5{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a,.footer-col li{font-size:14px;color:#8b9099;transition:color .2s;}
.footer-col a:hover{color:var(--red-light);}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  padding:26px 0;font-size:13.5px;color:#71767f;
}
.footer-bottom .friend-links{display:flex;flex-wrap:wrap;gap:14px;}
.footer-bottom .friend-links a{color:#8b9099;}
.footer-bottom .friend-links a:hover{color:var(--red-light);}

/* ===== Float ===== */
.float-tools{position:fixed;right:22px;bottom:22px;z-index:200;display:flex;flex-direction:column;gap:12px;}
.float-btn{
  width:56px;height:56px;border-radius:50%;background:#fff;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;cursor:pointer;
  box-shadow:0 8px 22px rgba(0,0,0,.14);transition:transform .25s,box-shadow .25s,background .25s,color .25s;
  font-size:12px;font-weight:700;color:var(--red);text-align:center;line-height:1.15;
}
.float-btn:hover{transform:translateY(-4px);box-shadow:0 14px 30px rgba(224,24,45,.28);background:var(--red);color:#fff;}
.float-btn.kf{background:var(--red);color:#fff;border-color:var(--red);}
.float-btn.kf:hover{background:var(--red-deep);}
#backTop{display:none;}
#backTop.show{display:flex;}
.float-qr-pop{
  position:fixed;right:88px;bottom:22px;z-index:201;background:#fff;border:1px solid var(--line);
  border-radius:14px;padding:14px;box-shadow:0 16px 40px rgba(0,0,0,.16);display:none;
}
.float-qr-pop.show{display:block;}
.float-qr-pop img{width:150px;height:150px;object-fit:cover;border-radius:8px;}
.float-qr-pop p{font-size:12.5px;text-align:center;color:var(--gray);margin-top:8px;}

/* ===== Responsive ===== */
@media (max-width:1080px){
  .hero-inner{grid-template-columns:1fr;gap:40px;}
  .hero-panel{max-width:520px;}
  .about-grid,.network-wrap,.match-wrap{grid-template-columns:1fr;gap:36px;}
  .services-grid,.scene-grid,.cases-grid,.reviews-grid,.price-grid,.contact-grid{grid-template-columns:repeat(2,1fr);}
  .stats-row{grid-template-columns:repeat(2,1fr);}
  .process-line{grid-template-columns:repeat(2,1fr);gap:32px;}
  .process-line::before{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .header-cta .btn-ghost{display:none;}
}
@media (max-width:860px){
  .nav-toggle{display:block;}
  .nav-links{
    position:absolute;top:72px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;
    padding:12px 16px;border-bottom:1px solid var(--line);box-shadow:0 16px 30px rgba(0,0,0,.08);
    display:none;gap:0;max-height:calc(100vh - 72px);overflow-y:auto;
  }
  .nav-links.open{display:flex;}
  .nav-links a{padding:12px 14px;font-size:15px;border-radius:8px;}
  .header-cta .btn-primary{padding:9px 16px;font-size:14px;}
  section{padding:64px 0;}
  .hero{padding:64px 0 72px;}
  .form-row{grid-template-columns:1fr;}
  .compare-head,.compare-row{grid-template-columns:1fr 1fr 1fr;font-size:13px;}
  .compare-head div,.compare-row div{padding:12px 12px;}
}
@media (max-width:640px){
  .container{padding:0 18px;}
  .services-grid,.scene-grid,.cases-grid,.reviews-grid,.price-grid,.contact-grid,.stats-row,.network-list,.about-visual,.case-square{grid-template-columns:1fr;}
  .process-line{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .form-card{padding:24px 20px;}
  .score-panel{padding:24px;}
  .article-item{flex-direction:column;align-items:flex-start;gap:14px;}
  .article-date{width:100%;height:auto;flex-direction:row;gap:8px;padding:10px;}
  .cta-banner{padding:48px 20px;border-radius:18px;}
  .float-tools{right:14px;bottom:14px;}
  .float-btn{width:50px;height:50px;font-size:11px;}
  .float-qr-pop{right:76px;bottom:14px;}
  .hero-metrics{grid-template-columns:1fr 1fr;}
  .brand-name{font-size:16px;}
  .ai-page-logo{height:32px;max-width:130px;}
  .header-inner{height:64px;}
  .nav-links{top:64px;max-height:calc(100vh - 64px);}
}