*{margin:0;padding:0;box-sizing:border-box}
:root{
  --mint:#3bb98b;
  --mint-dark:#1f8f68;
  --mint-light:#e8f8f0;
  --mint-soft:#f3fbf7;
  --ink:#16302a;
  --ink-2:#3c554d;
  --ink-3:#6d847c;
  --line:#d8ece2;
  --white:#ffffff;
  --shadow-sm:0 4px 14px rgba(30,110,80,.06);
  --shadow-md:0 10px 30px rgba(30,110,80,.10);
  --radius:16px;
}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;
  color:var(--ink);
  background:linear-gradient(180deg,#f3fbf7 0%,#f7fdfa 40%,#eef9f3 100%);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
a{text-decoration:none;color:inherit}
ul,ol{list-style:none}
img{max-width:100%;height:auto;display:block}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}

/* Header */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;padding:12px 0;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand .ai-page-logo{width:112px}
.brand-name{font-weight:800;font-size:18px;letter-spacing:.5px;color:var(--ink)}
.nav-wrap{display:flex;align-items:center;gap:8px}
.nav-links{display:flex;align-items:center;gap:0;flex-wrap:nowrap}
.nav-links a{
  display:inline-block;padding:8px 13px;font-size:14.5px;color:var(--ink-2);
  border-radius:8px;transition:.22s;white-space:nowrap;
}
.nav-links a:hover{background:var(--mint-light);color:var(--mint-dark)}
.header-cta{
  display:inline-flex;align-items:center;gap:6px;
  padding:9px 18px;background:linear-gradient(135deg,var(--mint),var(--mint-dark));
  color:#fff;font-size:14px;font-weight:600;border-radius:10px;
  box-shadow:0 6px 16px rgba(59,185,139,.28);transition:.22s;white-space:nowrap;
}
.header-cta:hover{transform:translateY(-2px);box-shadow:0 10px 22px rgba(59,185,139,.36)}
.menu-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);
  background:#fff;border-radius:10px;cursor:pointer;position:relative;
}
.menu-toggle span{
  position:absolute;left:50%;width:20px;height:2px;background:var(--ink);
  transform:translateX(-50%);transition:.25s;border-radius:2px;
}
.menu-toggle span:nth-child(1){top:14px}
.menu-toggle span:nth-child(2){top:20px}
.menu-toggle span:nth-child(3){top:26px}
.menu-toggle.open span:nth-child(1){top:20px;transform:translateX(-50%) rotate(45deg)}
.menu-toggle.open span:nth-child(2){opacity:0}
.menu-toggle.open span:nth-child(3){top:20px;transform:translateX(-50%) rotate(-45deg)}

/* Hero */
.hero{
  position:relative;overflow:hidden;
  padding:78px 0 72px;
  background:
    radial-gradient(circle at 12% 18%,rgba(59,185,139,.16),transparent 42%),
    radial-gradient(circle at 88% 12%,rgba(120,220,180,.20),transparent 46%),
    radial-gradient(circle at 50% 110%,rgba(59,185,139,.14),transparent 55%),
    linear-gradient(135deg,#f0fbf5 0%,#ffffff 55%,#eefaf4 100%);
  border-bottom:1px solid var(--line);
}
.hero-shape{position:absolute;border-radius:50%;pointer-events:none;z-index:0}
.hero-shape.s1{width:340px;height:340px;top:-120px;right:-80px;background:radial-gradient(circle,rgba(59,185,139,.22),transparent 70%);animation:floatY 9s ease-in-out infinite}
.hero-shape.s2{width:220px;height:220px;bottom:-90px;left:-60px;background:radial-gradient(circle,rgba(120,220,180,.24),transparent 70%);animation:floatY 11s ease-in-out infinite reverse}
.hero-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(59,185,139,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(59,185,139,.06) 1px,transparent 1px);background-size:48px 48px;mask-image:radial-gradient(circle at 50% 40%,#000 20%,transparent 78%);z-index:0}
.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;background:#fff;border:1px solid var(--line);
  border-radius:999px;font-size:13px;color:var(--mint-dark);font-weight:600;
  box-shadow:var(--shadow-sm);margin-bottom:22px;
}
.hero-tag::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--mint);box-shadow:0 0 0 4px rgba(59,185,139,.18)}
.hero h1{font-size:42px;line-height:1.25;letter-spacing:-.5px;margin-bottom:20px;font-weight:800;color:var(--ink)}
.hero h1 em{font-style:normal;color:var(--mint-dark);position:relative}
.hero-lead{font-size:16.5px;color:var(--ink-2);max-width:560px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:12px;font-size:15.5px;font-weight:600;
  transition:.24s;cursor:pointer;border:none;
}
.btn-primary{background:linear-gradient(135deg,var(--mint),var(--mint-dark));color:#fff;box-shadow:0 10px 24px rgba(59,185,139,.30)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 16px 32px rgba(59,185,139,.40)}
.btn-ghost{background:#fff;color:var(--ink);border:1px solid var(--line);box-shadow:var(--shadow-sm)}
.btn-ghost:hover{border-color:var(--mint);color:var(--mint-dark);transform:translateY(-3px)}
.hero-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.metric{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 14px;box-shadow:var(--shadow-sm);transition:.25s}
.metric:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.metric-num{font-size:22px;font-weight:800;color:var(--mint-dark);line-height:1.2}
.metric-label{font-size:12.5px;color:var(--ink-3);margin-top:4px}
.hero-panel{
  background:linear-gradient(160deg,#ffffff 0%,#f4fcf8 100%);
  border:1px solid var(--line);border-radius:22px;padding:26px;
  box-shadow:0 18px 44px rgba(30,110,80,.10);
  position:relative;
}
.hero-panel::before{
  content:"";position:absolute;top:-1px;left:24px;right:24px;height:3px;border-radius:0 0 4px 4px;
  background:linear-gradient(90deg,var(--mint),#8fe0bf,var(--mint-dark));
}
.panel-title{font-size:15px;font-weight:700;color:var(--ink);margin-bottom:16px;display:flex;align-items:center;gap:8px}
.panel-title::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--mint)}
.model-chips{display:flex;flex-wrap:wrap;gap:8px}
.model-chips span{
  padding:5px 12px;font-size:12.5px;background:var(--mint-soft);
  border:1px solid var(--line);border-radius:999px;color:var(--ink-2);transition:.2s;
}
.model-chips span:hover{background:var(--mint-light);color:var(--mint-dark);border-color:var(--mint);transform:translateY(-2px)}
.panel-foot{
  margin-top:18px;padding-top:16px;border-top:1px dashed var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
}
.panel-foot p{font-size:13px;color:var(--ink-3)}
.panel-foot a{font-size:13.5px;font-weight:600;color:var(--mint-dark);display:inline-flex;align-items:center;gap:4px}
.panel-foot a:hover{text-decoration:underline}

/* Section base */
section{padding:72px 0;position:relative}
.sec-head{text-align:center;max-width:740px;margin:0 auto 44px}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:1.5px;
  color:var(--mint-dark);background:var(--mint-light);
  padding:5px 14px;border-radius:999px;margin-bottom:14px;
}
.sec-head h2{font-size:31px;font-weight:800;color:var(--ink);letter-spacing:-.3px;margin-bottom:12px}
.sec-head p{font-size:15.5px;color:var(--ink-3)}

/* About */
.about{background:linear-gradient(180deg,#ffffff 0%,#f6fcf9 100%);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.about-text h2{font-size:30px;font-weight:800;margin-bottom:16px;line-height:1.3;color:var(--ink)}
.about-text p{color:var(--ink-2);margin-bottom:14px;font-size:15.5px}
.about-list{display:grid;gap:12px;margin-top:22px}
.about-item{display:flex;gap:12px;align-items:flex-start;padding:14px 16px;background:#fff;border-radius:12px;border:1px solid var(--line);transition:.24s;box-shadow:var(--shadow-sm)}
.about-item:hover{transform:translateX(5px);border-color:var(--mint);box-shadow:var(--shadow-md)}
.about-item .ico{
  flex-shrink:0;width:34px;height:34px;border-radius:9px;
  background:linear-gradient(135deg,var(--mint-light),#d4f3e5);
  display:flex;align-items:center;justify-content:center;
  color:var(--mint-dark);font-weight:800;font-size:14px;
}
.about-item h3{font-size:15px;font-weight:700;margin-bottom:3px;color:var(--ink)}
.about-item p{font-size:13.5px;color:var(--ink-3);margin:0}
.about-visual{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.about-visual .tile{
  border-radius:16px;padding:22px;background:#fff;border:1px solid var(--line);
  box-shadow:var(--shadow-sm);transition:.26s;
}
.about-visual .tile:hover{transform:translateY(-5px);box-shadow:var(--shadow-md)}
.about-visual .tile:nth-child(1){background:linear-gradient(150deg,#3bb98b,#1f8f68);color:#fff;border:none}
.about-visual .tile:nth-child(1) .tile-num,.about-visual .tile:nth-child(1) .tile-text{color:#fff}
.about-visual .tile:nth-child(4){background:linear-gradient(150deg,#e8f8f0,#d4f3e5)}
.tile-num{font-size:26px;font-weight:800;color:var(--mint-dark);line-height:1.2}
.tile-text{font-size:13px;color:var(--ink-3);margin-top:4px}

/* Services */
.services{background:linear-gradient(180deg,#f6fcf9 0%,#eef9f3 100%)}
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.svc-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;transition:.28s;position:relative;overflow:hidden;
  box-shadow:var(--shadow-sm);display:flex;flex-direction:column;gap:10px;
}
.svc-card::after{
  content:"";position:absolute;left:0;top:0;height:3px;width:0;
  background:linear-gradient(90deg,var(--mint),#8fe0bf);transition:.35s;
}
.svc-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:var(--mint)}
.svc-card:hover::after{width:100%}
.svc-icon{
  width:48px;height:48px;border-radius:13px;
  background:linear-gradient(135deg,var(--mint-light),#d4f3e5);
  display:flex;align-items:center;justify-content:center;margin-bottom:6px;
}
.svc-icon svg{width:24px;height:24px;stroke:var(--mint-dark);fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.svc-card h3{font-size:17px;font-weight:700;color:var(--ink)}
.svc-card p{font-size:14px;color:var(--ink-3);flex:1}
.svc-tag{font-size:12px;color:var(--mint-dark);font-weight:600;background:var(--mint-soft);padding:4px 10px;border-radius:999px;align-self:flex-start;border:1px solid var(--line)}

/* Scenes */
.scenes{background:linear-gradient(180deg,#eef9f3 0%,#ffffff 100%)}
.scene-tabs{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:34px}
.scene-tab{
  padding:9px 20px;border-radius:999px;border:1px solid var(--line);background:#fff;
  font-size:14px;color:var(--ink-2);cursor:pointer;transition:.22s;font-weight:500;
}
.scene-tab.active,.scene-tab:hover{background:var(--mint);color:#fff;border-color:var(--mint);box-shadow:0 6px 16px rgba(59,185,139,.28)}
.scene-panel{display:none;grid-template-columns:repeat(3,1fr);gap:20px}
.scene-panel.active{display:grid;animation:fadeUp .45s ease}
.scene-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow-sm);transition:.26s;
}
.scene-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:var(--mint)}
.scene-card h3{font-size:16px;font-weight:700;margin-bottom:8px;color:var(--ink);display:flex;align-items:center;gap:8px}
.scene-card h3::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--mint)}
.scene-card p{font-size:13.8px;color:var(--ink-3)}

/* Process */
.process{background:linear-gradient(180deg,#ffffff 0%,#f3fbf7 100%);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;position:relative}
.step{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 22px;box-shadow:var(--shadow-sm);transition:.26s;position:relative;
}
.step:hover{transform:translateY(-6px);box-shadow:var(--shadow-md)}
.step-num{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:17px;color:#fff;background:linear-gradient(135deg,var(--mint),var(--mint-dark));
  margin-bottom:14px;box-shadow:0 8px 18px rgba(59,185,139,.30);
}
.step h3{font-size:16px;font-weight:700;margin-bottom:6px}
.step p{font-size:13.6px;color:var(--ink-3)}

/* Network */
.network{background:linear-gradient(180deg,#f3fbf7 0%,#ffffff 100%)}
.net-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:36px;align-items:stretch}
.net-map{
  background:linear-gradient(150deg,#e8f8f0,#f6fcf9);
  border:1px solid var(--line);border-radius:20px;padding:30px;
  display:flex;flex-direction:column;justify-content:center;
  box-shadow:var(--shadow-sm);position:relative;overflow:hidden;
}
.net-map::before{
  content:"";position:absolute;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(59,185,139,.16),transparent 70%);
  top:-80px;right:-60px;
}
.net-cities{display:grid;grid-template-columns:1fr 1fr;gap:12px;position:relative;z-index:1}
.city{
  background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 16px;
  transition:.24s;display:flex;align-items:center;justify-content:space-between;
}
.city:hover{border-color:var(--mint);transform:translateY(-3px);box-shadow:var(--shadow-sm)}
.city span{font-size:15px;font-weight:600;color:var(--ink)}
.city em{font-size:12px;font-style:normal;color:var(--mint-dark);background:var(--mint-light);padding:3px 9px;border-radius:999px}
.net-info{display:flex;flex-direction:column;gap:16px}
.net-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;box-shadow:var(--shadow-sm);transition:.24s;flex:1}
.net-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.net-card h3{font-size:16.5px;font-weight:700;margin-bottom:8px;color:var(--ink)}
.net-card p{font-size:14px;color:var(--ink-3)}
.net-card a{color:var(--mint-dark);font-weight:600;font-size:14px;display:inline-block;margin-top:8px}
.net-card a:hover{text-decoration:underline}

/* Cases */
.cases{background:linear-gradient(180deg,#ffffff 0%,#f6fcf9 100%);border-top:1px solid var(--line)}
.case-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.case-card{
  background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;
  box-shadow:var(--shadow-sm);transition:.28s;display:flex;flex-direction:column;
}
.case-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:var(--mint)}
.case-media{background:linear-gradient(150deg,#e8f8f0,#f6fcf9);padding:20px;display:flex;align-items:center;justify-content:center;gap:12px;min-height:150px}
.case-media img{border-radius:10px;box-shadow:0 6px 16px rgba(30,110,80,.12);max-height:140px;width:auto}
.case-body{padding:22px}
.case-body h3{font-size:17px;font-weight:700;margin-bottom:8px;color:var(--ink)}
.case-body p{font-size:14px;color:var(--ink-3);margin-bottom:14px}
.case-tags{display:flex;flex-wrap:wrap;gap:8px}
.case-tags span{font-size:12px;color:var(--mint-dark);background:var(--mint-soft);border:1px solid var(--line);padding:4px 10px;border-radius:999px}

/* Compare */
.compare{background:linear-gradient(180deg,#f6fcf9 0%,#eef9f3 100%);border-top:1px solid var(--line)}
.score-card{
  background:linear-gradient(140deg,#ffffff,#f2fcf7);
  border:1px solid var(--line);border-radius:20px;padding:30px;
  display:grid;grid-template-columns:auto 1fr;gap:28px;align-items:center;
  box-shadow:var(--shadow-md);margin-bottom:34px;
}
.score-left{text-align:center;padding:12px 26px;border-right:1px solid var(--line)}
.score-num{font-size:56px;font-weight:800;color:var(--mint-dark);line-height:1;letter-spacing:-2px}
.score-num small{font-size:20px;color:var(--ink-3);font-weight:600}
.score-stars{color:#f0a92c;font-size:20px;letter-spacing:2px;margin-top:8px}
.score-left p{font-size:13px;color:var(--ink-3);margin-top:6px}
.score-right h3{font-size:20px;font-weight:800;margin-bottom:8px}
.score-right p{font-size:14.5px;color:var(--ink-2);margin-bottom:14px}
.score-points{display:flex;flex-wrap:wrap;gap:10px}
.score-points span{font-size:13px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 14px;color:var(--ink-2)}
.table-wrap{overflow-x:auto;border-radius:16px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-sm)}
table.compare-table{width:100%;border-collapse:collapse;min-width:640px}
.compare-table th,.compare-table td{padding:15px 20px;text-align:left;font-size:14px;border-bottom:1px solid var(--line)}
.compare-table th{background:linear-gradient(135deg,var(--mint),var(--mint-dark));color:#fff;font-weight:700;font-size:14.5px}
.compare-table tr:last-child td{border-bottom:none}
.compare-table tbody tr:hover{background:var(--mint-soft)}
.compare-table td:first-child{font-weight:600;color:var(--ink)}
.compare-table td:nth-child(2){color:var(--ink-3)}
.compare-table td:nth-child(3){color:var(--mint-dark);font-weight:600}

/* Pricing */
.pricing{background:linear-gradient(180deg,#eef9f3 0%,#ffffff 100%)}
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.price-card{
  background:#fff;border:1px solid var(--line);border-radius:20px;padding:30px 26px;
  box-shadow:var(--shadow-sm);transition:.26s;position:relative;
}
.price-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md)}
.price-card.featured{border:2px solid var(--mint);box-shadow:0 16px 40px rgba(59,185,139,.18)}
.price-card.featured::before{
  content:"热门之选";position:absolute;top:-12px;left:26px;
  background:linear-gradient(135deg,var(--mint),var(--mint-dark));color:#fff;
  font-size:12px;font-weight:700;padding:4px 14px;border-radius:999px;
}
.price-name{font-size:16px;font-weight:700;color:var(--ink);margin-bottom:6px}
.price-desc{font-size:13px;color:var(--ink-3);margin-bottom:18px}
.price-val{font-size:34px;font-weight:800;color:var(--mint-dark);line-height:1}
.price-val small{font-size:14px;color:var(--ink-3);font-weight:500}
.price-features{margin:20px 0 24px;display:grid;gap:9px}
.price-features li{font-size:13.8px;color:var(--ink-2);display:flex;gap:8px;align-items:flex-start}
.price-features li::before{content:"✓";color:var(--mint);font-weight:800;flex-shrink:0}
.price-card .btn{width:100%}

/* Reviews */
.reviews{background:linear-gradient(180deg,#ffffff 0%,#f6fcf9 100%);border-top:1px solid var(--line)}
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.review-card{
  background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px;
  box-shadow:var(--shadow-sm);transition:.26s;display:flex;flex-direction:column;gap:12px;
}
.review-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:var(--mint)}
.review-stars{color:#f0a92c;font-size:15px;letter-spacing:2px}
.review-text{font-size:14.2px;color:var(--ink-2);flex:1}
.review-user{display:flex;align-items:center;gap:11px;border-top:1px dashed var(--line);padding-top:14px}
.avatar{
  width:40px;height:40px;border-radius:50%;
  background:linear-gradient(135deg,var(--mint-light),#b7ecd6);
  display:flex;align-items:center;justify-content:center;
  font-weight:800;color:var(--mint-dark);font-size:15px;flex-shrink:0;
}
.review-user h4{font-size:14px;font-weight:700;color:var(--ink)}
.review-user p{font-size:12.5px;color:var(--ink-3)}

/* Training */
.training{background:linear-gradient(180deg,#f6fcf9 0%,#eef9f3 100%)}
.train-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.train-card{
  background:#fff;border:1px solid var(--line);border-radius:20px;padding:28px;
  box-shadow:var(--shadow-sm);transition:.26s;
}
.train-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md)}
.train-card h3{font-size:19px;font-weight:800;margin-bottom:14px;color:var(--ink)}
.train-list{display:grid;gap:11px}
.train-list li{font-size:14.2px;color:var(--ink-2);display:flex;gap:10px;align-items:flex-start}
.train-list li::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--mint);margin-top:8px;flex-shrink:0}

/* Articles */
.articles{background:linear-gradient(180deg,#eef9f3 0%,#ffffff 100%)}
.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.article-card{
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px;
  box-shadow:var(--shadow-sm);transition:.26s;display:flex;flex-direction:column;gap:10px;
}
.article-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:var(--mint)}
.article-cat{font-size:12px;color:var(--mint-dark);background:var(--mint-soft);padding:3px 10px;border-radius:999px;align-self:flex-start;font-weight:600}
.article-card h3{font-size:16px;font-weight:700;color:var(--ink);line-height:1.5}
.article-card p{font-size:13.6px;color:var(--ink-3);flex:1}
.article-card a{font-size:13.5px;color:var(--mint-dark);font-weight:600}
.article-card a:hover{text-decoration:underline}

/* Form */
.contact{background:linear-gradient(180deg,#ffffff 0%,#f3fbf7 100%);border-top:1px solid var(--line)}
.contact-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:36px;align-items:start}
.contact-info h2{font-size:29px;font-weight:800;margin-bottom:14px;color:var(--ink)}
.contact-info > p{font-size:15px;color:var(--ink-2);margin-bottom:24px}
.contact-list{display:grid;gap:14px}
.contact-item{
  display:flex;gap:14px;align-items:center;padding:16px;background:#fff;
  border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow-sm);transition:.24s;
}
.contact-item:hover{transform:translateX(5px);border-color:var(--mint);box-shadow:var(--shadow-md)}
.contact-item .ci-ico{
  width:42px;height:42px;border-radius:11px;flex-shrink:0;
  background:linear-gradient(135deg,var(--mint-light),#d4f3e5);
  display:flex;align-items:center;justify-content:center;
}
.contact-item .ci-ico svg{width:20px;height:20px;stroke:var(--mint-dark);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.contact-item h4{font-size:13px;color:var(--ink-3);font-weight:500}
.contact-item p{font-size:14.5px;font-weight:600;color:var(--ink);word-break:break-all}
.form-card{
  background:#fff;border:1px solid var(--line);border-radius:20px;padding:32px;
  box-shadow:var(--shadow-md);
}
.form-card h3{font-size:20px;font-weight:800;margin-bottom:8px;color:var(--ink)}
.form-card > p{font-size:14px;color:var(--ink-3);margin-bottom:22px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px}
.form-field{display:flex;flex-direction:column;gap:7px}
.form-field.full{grid-column:1/-1}
.form-field label{font-size:13.5px;font-weight:600;color:var(--ink-2)}
.form-field input,.form-field select,.form-field textarea{
  width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:10px;
  font-size:14px;font-family:inherit;color:var(--ink);background:#fbfefc;
  transition:.22s;outline:none;
}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{
  border-color:var(--mint);background:#fff;box-shadow:0 0 0 3px rgba(59,185,139,.14);
}
.form-field textarea{resize:vertical;min-height:110px}
.form-submit{
  width:100%;padding:14px;border:none;border-radius:11px;cursor:pointer;
  background:linear-gradient(135deg,var(--mint),var(--mint-dark));color:#fff;
  font-size:15.5px;font-weight:700;font-family:inherit;
  box-shadow:0 10px 24px rgba(59,185,139,.30);transition:.24s;margin-top:6px;
}
.form-submit:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(59,185,139,.40)}

/* FAQ */
.faq{background:linear-gradient(180deg,#f3fbf7 0%,#ffffff 100%)}
.faq-list{max-width:880px;margin:0 auto;display:grid;gap:12px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:14px;
  overflow:hidden;transition:.25s;box-shadow:var(--shadow-sm);
}
.faq-item.open{border-color:var(--mint);box-shadow:var(--shadow-md)}
.faq-q{
  width:100%;padding:19px 22px;background:none;border:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:15.5px;font-weight:600;color:var(--ink);text-align:left;font-family:inherit;
}
.faq-q::after{
  content:"+";font-size:22px;color:var(--mint);font-weight:400;flex-shrink:0;
  transition:.28s;line-height:1;
}
.faq-item.open .faq-q::after{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a p{padding:0 22px 20px;font-size:14.2px;color:var(--ink-3)}

/* Links & footer */
.friend-links{background:#fff;border-top:1px solid var(--line);padding:36px 0 10px}
.fl-title{font-size:15px;font-weight:700;color:var(--ink);margin-bottom:14px}
.fl-list{display:flex;flex-wrap:wrap;gap:10px 20px}
.fl-list a{font-size:13.5px;color:var(--ink-3);transition:.2s}
.fl-list a:hover{color:var(--mint-dark);text-decoration:underline}

.site-footer{
  background:#14322a;color:#c9e6da;padding:48px 0 0;position:relative;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:32px;padding-bottom:36px}
.footer-brand .ai-page-logo{width:120px;margin-bottom:14px;filter:brightness(1.05)}
.footer-brand p{font-size:13.5px;color:#9fc9b8;line-height:1.8;max-width:300px}
.footer-col h4{font-size:14.5px;font-weight:700;color:#ffffff;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:13.5px;color:#9fc9b8;transition:.2s}
.footer-col a:hover{color:#7fe0b8}
.footer-col p{font-size:13.5px;color:#9fc9b8;line-height:1.9}
.qr-box{display:flex;align-items:center;gap:12px;margin-top:12px}
.qr-box img{width:78px;height:78px;border-radius:8px;background:#fff;padding:4px;object-fit:contain}
.qr-box span{font-size:12.5px;color:#9fc9b8;line-height:1.6}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);padding:18px 0;
  display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between;
}
.footer-bottom p{font-size:13px;color:#8fb8a8}
.footer-bottom a{color:#7fe0b8}
.footer-bottom a:hover{text-decoration:underline}

/* Floating */
.float-chat{
  position:fixed;right:22px;bottom:78px;z-index:120;
  display:flex;flex-direction:column;align-items:flex-end;gap:10px;
}
.chat-btn{
  width:54px;height:54px;border-radius:50%;border:none;cursor:pointer;
  background:linear-gradient(135deg,var(--mint),var(--mint-dark));
  box-shadow:0 10px 26px rgba(59,185,139,.40);
  display:flex;align-items:center;justify-content:center;transition:.25s;
}
.chat-btn:hover{transform:scale(1.08)}
.chat-btn svg{width:26px;height:26px;stroke:#fff;fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.chat-panel{
  display:none;width:230px;background:#fff;border:1px solid var(--line);
  border-radius:16px;padding:16px;box-shadow:0 18px 44px rgba(30,110,80,.18);
  text-align:center;
}
.chat-panel.show{display:block;animation:fadeUp .3s ease}
.chat-panel img{width:150px;height:150px;margin:0 auto 10px;border-radius:10px;object-fit:contain;border:1px solid var(--line)}
.chat-panel h4{font-size:14px;font-weight:700;color:var(--ink);margin-bottom:4px}
.chat-panel p{font-size:12.5px;color:var(--ink-3);line-height:1.6}
.back-top{
  position:fixed;right:22px;bottom:22px;z-index:120;
  width:46px;height:46px;border-radius:50%;border:1px solid var(--line);
  background:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-md);opacity:0;visibility:hidden;transition:.3s;
}
.back-top.show{opacity:1;visibility:visible}
.back-top:hover{background:var(--mint);border-color:var(--mint)}
.back-top svg{width:18px;height:18px;stroke:var(--ink);fill:none;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round;transition:.2s}
.back-top:hover svg{stroke:#fff}

/* Animations */
@keyframes floatY{0%,100%{transform:translateY(0)}50%{transform:translateY(-18px)}}
@keyframes fadeUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}
.reveal{opacity:0;transform:translateY(26px);transition:opacity .6s ease,transform .6s ease}
.reveal.visible{opacity:1;transform:translateY(0)}

/* Responsive */
@media(max-width:1024px){
  .nav-links{display:none;position:absolute;top:100%;left:0;right:0;flex-direction:column;background:#fff;border-bottom:1px solid var(--line);padding:10px 20px;gap:2px;box-shadow:var(--shadow-md)}
  .nav-links.show{display:flex}
  .nav-links a{width:100%;padding:11px 12px}
  .menu-toggle{display:block}
  .header-inner{position:relative;flex-wrap:wrap}
  .nav-wrap{width:100%;justify-content:space-between}
  .hero-inner{grid-template-columns:1fr;gap:36px}
  .hero h1{font-size:34px}
  .svc-grid,.scene-panel.active,.price-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .about-grid,.net-grid,.contact-grid,.train-grid{grid-template-columns:1fr}
  .case-grid{grid-template-columns:1fr}
  .review-grid,.article-grid{grid-template-columns:repeat(2,1fr)}
  .score-card{grid-template-columns:1fr;gap:20px}
  .score-left{border-right:none;border-bottom:1px solid var(--line);padding-bottom:20px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media(max-width:640px){
  section{padding:52px 0}
  .hero{padding:50px 0 46px}
  .hero h1{font-size:27px}
  .hero-lead{font-size:15px}
  .hero-actions .btn{flex:1;min-width:140px;padding:13px 18px;font-size:14.5px}
  .hero-metrics{grid-template-columns:1fr 1fr}
  .hero-metrics .metric:nth-child(3){grid-column:1/-1}
  .sec-head h2{font-size:24px}
  .sec-head{margin-bottom:32px}
  .svc-grid,.scene-panel.active,.price-grid,.steps,.review-grid,.article-grid{grid-template-columns:1fr}
  .about-visual{grid-template-columns:1fr 1fr}
  .form-row{grid-template-columns:1fr}
  .form-card{padding:24px 20px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .float-chat{right:14px;bottom:72px}
  .back-top{right:14px;bottom:14px}
  .score-num{font-size:44px}
  .compare-table th,.compare-table td{padding:12px 14px;font-size:13px}
  .net-cities{grid-template-columns:1fr}
}