:root{
  --ink:#1b2030;
  --ink-2:#4a5468;
  --ink-3:#78829a;
  --paper:#fffdf8;
  --paper-2:#f7f2e7;
  --line:#e7dfcf;
  --coral:#ff5c35;
  --blue:#2f5fe0;
  --yellow:#ffc633;
  --green:#12a97a;
  --violet:#8b5cf6;
  --radius:18px;
  --shadow-sm:0 2px 12px rgba(27,32,48,.06);
  --shadow-md:0 14px 34px rgba(27,32,48,.11);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.72;
  color:var(--ink);
  background-color:#fffdf8;
  background-image:
    radial-gradient(circle at 10% 4%, rgba(255,198,51,.22), transparent 34%),
    radial-gradient(circle at 90% 2%, rgba(47,95,224,.15), transparent 32%),
    radial-gradient(circle at 82% 46%, rgba(139,92,246,.11), transparent 30%),
    radial-gradient(circle at 4% 68%, rgba(18,169,122,.13), transparent 30%),
    radial-gradient(circle at 52% 98%, rgba(255,92,53,.13), transparent 34%);
  background-repeat:no-repeat;
}
img{max-width:100%;height:auto;display:block;border:0;}
a{color:var(--blue);text-decoration:none;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:800;letter-spacing:-.01em;}
p{margin:0 0 14px;}
ul,ol{margin:0;padding:0;list-style:none;}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}
section[id]{scroll-margin-top:88px;}

/* ===== header ===== */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(255,253,248,.94);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:70px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand .ai-page-logo{width:38px;height:38px;object-fit:contain;}
.brand-name{font-size:18px;font-weight:800;color:var(--ink);letter-spacing:.02em;white-space:nowrap;}
.nav{display:flex;align-items:center;gap:18px;min-width:0;}
.nav-links{display:flex;align-items:center;justify-content:flex-end;gap:0;list-style:none;margin:0;padding:0;}
.nav-links li{flex:0 0 auto;}
.nav-links a{
  display:inline-block;padding:9px 11px;border-radius:10px;
  font-size:14px;font-weight:600;color:var(--ink-2);white-space:nowrap;
  transition:color .2s ease,background .2s ease;
}
.nav-links a:hover{color:var(--coral);background:rgba(255,92,53,.09);}
.nav-cta{padding:9px 18px;font-size:14px;flex-shrink:0;}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:4px;
  width:42px;height:38px;padding:0 9px;border-radius:10px;
  border:1.5px solid var(--ink);background:#fff;cursor:pointer;
}
.nav-toggle span{display:block;height:2px;border-radius:2px;background:var(--ink);transition:transform .25s ease,opacity .25s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ===== buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 28px;border-radius:999px;border:2px solid transparent;
  font-size:15px;font-weight:800;cursor:pointer;text-decoration:none;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease;
}
.btn:active{transform:translateY(1px) scale(.99);}
.btn-primary{background:var(--coral);color:#fff;box-shadow:0 10px 22px rgba(255,92,53,.28);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 28px rgba(255,92,53,.36);color:#fff;}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:#fff;transform:translateY(-2px);}
.btn-light{background:var(--yellow);color:#3a2c00;box-shadow:0 10px 22px rgba(255,198,51,.3);}
.btn-light:hover{transform:translateY(-2px);color:#3a2c00;}

/* ===== hero ===== */
.hero{padding:62px 0 54px;position:relative;overflow:hidden;}
.hero-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center;position:relative;z-index:1;}
.eyebrow{
  display:inline-block;margin-bottom:18px;padding:5px 14px;
  font-size:13px;font-weight:700;letter-spacing:.06em;color:#a03a1c;
  background:rgba(255,198,51,.28);
  border:1.5px dashed rgba(255,92,53,.5);
  border-radius:999px;
}
.hero h1{font-size:clamp(30px,4.2vw,50px);line-height:1.2;margin-bottom:18px;}
.hl{background-image:linear-gradient(transparent 62%,rgba(255,198,51,.72) 62%,rgba(255,198,51,.72) 92%,transparent 92%);}
.hero-lead{font-size:16.5px;color:var(--ink-2);max-width:560px;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:24px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:9px;}
.hero-tags span{
  font-size:13px;font-weight:600;color:#3a4358;
  padding:5px 13px;border-radius:999px;background:#fff;
  border:1px solid var(--line);box-shadow:0 2px 6px rgba(27,32,48,.04);
}
.hero-panel{
  position:relative;background:#fff;border:1.5px solid var(--ink);
  border-radius:22px;padding:22px;box-shadow:10px 10px 0 rgba(47,95,224,.10);
}
.panel-tag{
  position:absolute;top:-15px;right:20px;
  background:var(--yellow);color:#3a2c00;font-size:12px;font-weight:800;
  padding:4px 13px;border-radius:999px;transform:rotate(3deg);
  border:1.5px solid rgba(27,32,48,.18);
}
.panel-head{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.dot-row{display:flex;gap:5px;}
.dot-row i{width:9px;height:9px;border-radius:50%;display:block;}
.dot-row i:nth-child(1){background:var(--coral);}
.dot-row i:nth-child(2){background:var(--yellow);}
.dot-row i:nth-child(3){background:var(--green);}
.panel-title{font-size:13px;font-weight:800;color:var(--ink-2);letter-spacing:.04em;}
.model-chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px;}
.model-chips li{font-size:13px;font-weight:600;padding:5px 12px;border-radius:999px;border:1px solid var(--line);background:var(--paper-2);color:#3a4358;}
.model-chips li:nth-child(4n+1){background:rgba(255,92,53,.10);color:#b83a1b;border-color:rgba(255,92,53,.26);}
.model-chips li:nth-child(4n+2){background:rgba(47,95,224,.09);color:#1e47a8;border-color:rgba(47,95,224,.24);}
.model-chips li:nth-child(4n+3){background:rgba(18,169,122,.10);color:#0b7a58;border-color:rgba(18,169,122,.26);}
.model-chips li:nth-child(4n){background:rgba(139,92,246,.10);color:#6b3fd4;border-color:rgba(139,92,246,.26);}
.panel-foot{display:flex;flex-wrap:wrap;gap:8px;border-top:1px dashed var(--line);padding-top:14px;}
.panel-foot span{font-size:12.5px;font-weight:700;color:var(--ink-2);padding:3px 10px;border-radius:8px;background:var(--paper-2);}

/* ===== metrics ===== */
.metrics{padding:0 0 8px;}
.metrics-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.metric{
  background:#fff;border:1px solid var(--line);border-radius:16px;
  padding:20px 16px;text-align:center;box-shadow:var(--shadow-sm);
  transition:transform .25s ease,box-shadow .25s ease;
}
.metric:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);}
.metric strong{display:block;font-size:29px;line-height:1.2;color:var(--coral);letter-spacing:-.02em;}
.metric span{display:block;margin-top:6px;font-size:13.5px;color:var(--ink-2);}

/* ===== section ===== */
.section{padding:70px 0;}
.section-head{max-width:740px;margin:0 auto 42px;text-align:center;}
.kicker{
  display:inline-block;margin-bottom:14px;padding:4px 13px;
  font-size:12.5px;font-weight:800;letter-spacing:.14em;color:#a03a1c;
  background:rgba(255,92,53,.08);border:1.5px dashed rgba(255,92,53,.45);border-radius:999px;
}
.section-head h2{font-size:clamp(23px,2.7vw,32px);line-height:1.32;margin-bottom:12px;}
.section-desc{color:var(--ink-2);font-size:15.5px;margin:0;}

/* ===== cards ===== */
.card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow-sm);overflow:hidden;
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:4px;
  background:linear-gradient(90deg,var(--coral),var(--yellow),var(--green),var(--blue),var(--violet));
  opacity:0;transition:opacity .3s ease;
}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:#dbd0b9;}
.card:hover::before{opacity:1;}
.card h3{font-size:17px;margin-bottom:9px;}
.card p{font-size:14.5px;color:var(--ink-2);margin:0;}

/* ===== about ===== */
.about-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:start;margin-bottom:34px;}
.about-text p{font-size:15.5px;color:var(--ink-2);}
.about-text strong{color:var(--ink);}
.about-tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:20px;}
.about-tags span{font-size:13px;font-weight:700;padding:5px 13px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#3a4358;}
.about-visual{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius);padding:14px;box-shadow:var(--shadow-sm);}
.about-visual img{border-radius:12px;width:100%;object-fit:contain;}
.about-note{margin:10px 0 0;font-size:13px;color:var(--ink-3);text-align:center;}

/* ===== feature grid ===== */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:stretch;}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;align-items:stretch;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;align-items:stretch;}

.badge{
  display:inline-flex;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:13px;font-size:16px;font-weight:800;
  margin-bottom:16px;color:#fff;
}
.b-coral{background:rgba(255,92,53,.14);color:#b83a1b;}
.b-blue{background:rgba(47,95,224,.13);color:#1e47a8;}
.b-green{background:rgba(18,169,122,.14);color:#0b7a58;}
.b-violet{background:rgba(139,92,246,.14);color:#6b3fd4;}
.b-yellow{background:rgba(255,198,51,.28);color:#8a6100;}

/* ===== steps ===== */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.step{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-sm);transition:transform .28s ease,box-shadow .28s ease;}
.step:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:50%;font-size:14px;font-weight:800;
  color:#fff;background:var(--ink);margin-bottom:14px;
}
.step h3{font-size:16px;margin-bottom:8px;}
.step p{font-size:14px;color:var(--ink-2);margin:0;}

/* ===== tag cloud ===== */
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px;}
.tag-cloud span{
  font-size:13.5px;font-weight:600;padding:7px 15px;border-radius:999px;
  background:#fff;border:1px solid var(--line);color:#3a4358;
  transition:transform .2s ease,border-color .2s ease,color .2s ease;
}
.tag-cloud span:hover{transform:translateY(-2px);border-color:var(--coral);color:#b83a1b;}

/* ===== timeline ===== */
.timeline{position:relative;display:grid;grid-template-columns:repeat(5,1fr);gap:16px;}
.timeline::before{content:"";position:absolute;left:6%;right:6%;top:20px;height:2px;background:repeating-linear-gradient(90deg,var(--line) 0 10px,transparent 10px 18px);}
.tl-item{position:relative;padding-top:52px;text-align:center;}
.tl-dot{
  position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:800;background:#fff;border:2px solid var(--ink);color:var(--ink);
  box-shadow:0 4px 12px rgba(27,32,48,.10);
}
.tl-item:nth-child(1) .tl-dot{border-color:var(--coral);color:#b83a1b;}
.tl-item:nth-child(2) .tl-dot{border-color:var(--blue);color:#1e47a8;}
.tl-item:nth-child(3) .tl-dot{border-color:var(--green);color:#0b7a58;}
.tl-item:nth-child(4) .tl-dot{border-color:var(--violet);color:#6b3fd4;}
.tl-item:nth-child(5) .tl-dot{border-color:#d99b00;color:#8a6100;}
.tl-item h3{font-size:15.5px;margin-bottom:6px;}
.tl-item p{font-size:13.5px;color:var(--ink-2);margin:0;}

/* ===== cases ===== */
.case-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .28s ease,box-shadow .28s ease;}
.case-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);}
.case-media{aspect-ratio:4/3;background:var(--paper-2);display:flex;align-items:center;justify-content:center;overflow:hidden;padding:10px;}
.case-media img{width:100%;height:100%;object-fit:contain;border-radius:10px;}
.case-body{padding:18px 20px 22px;}
.case-body h3{font-size:16px;margin-bottom:7px;}
.case-body p{font-size:14px;color:var(--ink-2);margin:0;}

/* ===== score ===== */
.score-card{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
  background:linear-gradient(135deg,rgba(255,198,51,.22),rgba(255,92,53,.10));
  border:1.5px dashed rgba(255,92,53,.45);border-radius:var(--radius);
  padding:24px 28px;margin-bottom:26px;
}
.score-main{display:flex;align-items:baseline;gap:6px;}
.score-num{font-size:46px;font-weight:900;line-height:1;color:#b83a1b;letter-spacing:-.03em;}
.score-total{font-size:16px;font-weight:700;color:var(--ink-2);}
.score-info{text-align:left;}
.stars{font-size:22px;letter-spacing:4px;color:#e8a300;margin:0 0 2px;line-height:1.2;}
.score-label{margin:0;font-size:15px;font-weight:800;color:var(--ink);}
.score-note{margin:0;font-size:13.5px;color:var(--ink-2);max-width:420px;}

/* ===== table ===== */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:16px;background:#fff;box-shadow:var(--shadow-sm);}
.compare-table{width:100%;min-width:720px;border-collapse:collapse;font-size:14.5px;}
.compare-table th,.compare-table td{padding:14px 18px;text-align:left;border-bottom:1px solid #f1ebdd;vertical-align:top;color:var(--ink-2);}
.compare-table thead th{background:var(--paper-2);color:var(--ink);font-size:14px;font-weight:800;white-space:nowrap;}
.compare-table tbody tr:last-child td{border-bottom:none;}
.compare-table tbody tr:hover td{background:rgba(255,198,51,.09);}
.compare-table .col-us{background:rgba(255,92,53,.10);color:#8f3218;font-weight:700;}
.compare-table thead .col-us{background:rgba(255,92,53,.16);color:#8f3218;}

/* ===== join banner ===== */
.join-card{
  position:relative;overflow:hidden;border-radius:26px;padding:44px 40px;
  background:linear-gradient(135deg,#1b2030 0%,#28324c 60%,#2f3c5c 100%);
  color:#fff;display:grid;grid-template-columns:1.15fr .85fr;gap:36px;align-items:center;
  box-shadow:0 20px 44px rgba(27,32,48,.24);
}
.join-card::before{
  content:"";position:absolute;width:320px;height:320px;border-radius:50%;
  right:-90px;top:-110px;background:radial-gradient(circle,rgba(255,198,51,.34),transparent 68%);
}
.join-card::after{
  content:"";position:absolute;width:260px;height:260px;border-radius:50%;
  left:-80px;bottom:-120px;background:radial-gradient(circle,rgba(255,92,53,.30),transparent 68%);
}
.join-copy{position:relative;z-index:1;}
.join-copy .kicker{background:rgba(255,255,255,.10);border-color:rgba(255,198,51,.6);color:#ffd873;}
.join-copy h2{color:#fff;font-size:clamp(22px,2.6vw,30px);margin-bottom:12px;}
.join-copy p{color:rgba(255,255,255,.82);font-size:15px;margin-bottom:22px;}
.join-list{position:relative;z-index:1;display:grid;gap:12px;}
.join-list li{
  display:flex;align-items:flex-start;gap:10px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
  border-radius:12px;padding:12px 16px;font-size:14.5px;color:#fff;
}
.join-list li::before{content:"◆";color:var(--yellow);font-size:12px;line-height:1.9;flex-shrink:0;}

/* ===== review cards ===== */
.review-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;justify-content:space-between;gap:18px;transition:transform .28s ease,box-shadow .28s ease;}
.review-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);}
.review-text{font-size:14.5px;color:var(--ink-2);margin:0;position:relative;padding-top:22px;}
.review-text::before{content:"“";position:absolute;left:0;top:-6px;font-size:38px;line-height:1;color:rgba(255,92,53,.30);font-family:Georgia,serif;}
.review-meta{display:flex;align-items:center;gap:12px;}
.avatar{width:42px;height:42px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:800;flex-shrink:0;}
.review-meta strong{display:block;font-size:14.5px;color:var(--ink);}
.review-meta em{display:block;font-style:normal;font-size:13px;color:var(--ink-3);}

/* ===== faq ===== */
.faq-list{display:grid;gap:12px;max-width:900px;margin:0 auto;}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow-sm);overflow:hidden;transition:border-color .25s ease,box-shadow .25s ease;}
.faq-item[open]{border-color:rgba(255,92,53,.45);box-shadow:0 10px 24px rgba(255,92,53,.10);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  padding:17px 22px;font-size:15.5px;font-weight:700;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";flex-shrink:0;width:24px;height:24px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:17px;font-weight:700;color:var(--coral);background:rgba(255,92,53,.10);
  transition:transform .25s ease;
}
.faq-item[open] summary::after{content:"−";transform:rotate(180deg);}
.faq-answer{padding:0 22px 19px;color:var(--ink-2);font-size:14.5px;line-height:1.78;margin:0;}

/* ===== insight ===== */
.insight-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:start;}
.insight-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-sm);}
.insight-card h3{font-size:17px;margin-bottom:16px;display:flex;align-items:center;gap:9px;}
.insight-card h3::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--coral);flex-shrink:0;}
.wiki-list li{margin-bottom:14px;}
.wiki-list li:last-child{margin-bottom:0;}
.wiki-list strong{display:block;font-size:14.5px;color:var(--ink);margin-bottom:2px;}
.wiki-list span{font-size:13.5px;color:var(--ink-2);line-height:1.65;display:block;}
.help-list li{border-bottom:1px dashed var(--line);}
.help-list li:last-child{border-bottom:none;}
.help-list a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:11px 0;font-size:14.5px;font-weight:600;color:var(--ink-2);transition:color .2s ease,padding-left .2s ease;}
.help-list a:hover{color:var(--coral);padding-left:4px;}
.help-list a::after{content:"›";color:var(--ink-3);font-size:17px;font-weight:700;}
.article-list li{border-bottom:1px dashed var(--line);}
.article-list li:last-child{border-bottom:none;}
.article-list a{display:block;padding:11px 0;font-size:14.5px;font-weight:600;color:var(--ink-2);line-height:1.6;transition:color .2s ease,padding-left .2s ease;}
.article-list a:hover{color:var(--coral);padding-left:4px;}

/* ===== form ===== */
.match-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:36px;align-items:start;}
.match-copy h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:14px;}
.match-copy p{color:var(--ink-2);font-size:15.5px;}
.match-points{display:grid;gap:12px;margin-top:20px;}
.match-points li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--ink-2);}
.match-points li::before{content:"✓";flex-shrink:0;width:20px;height:20px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:800;color:#fff;background:var(--green);margin-top:3px;}
.lead-form{display:grid;grid-template-columns:1fr 1fr;gap:16px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-sm);}
.field{display:flex;flex-direction:column;gap:7px;min-width:0;}
.field-full{grid-column:1 / -1;}
.field label{font-size:13.5px;font-weight:700;color:var(--ink-2);}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:12px;
  font-size:15px;font-family:inherit;color:var(--ink);background:#fffdf8;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field input::placeholder,.field textarea::placeholder{color:#a8b0c2;}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--coral);box-shadow:0 0 0 3px rgba(255,92,53,.14);}
.field textarea{resize:vertical;min-height:104px;}
.lead-form .form-submit{grid-column:1 / -1;justify-self:start;}
.form-tip{grid-column:1 / -1;margin:0;font-size:12.5px;color:var(--ink-3);}

/* ===== contact ===== */
.contact-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:32px;align-items:start;}
.contact-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow-sm);}
.contact-list li{display:flex;flex-wrap:wrap;align-items:baseline;gap:10px;padding:13px 0;border-bottom:1px dashed var(--line);font-size:14.5px;}
.contact-list li:last-child{border-bottom:none;}
.contact-list b{flex:0 0 108px;color:var(--ink);font-weight:800;font-size:14px;}
.contact-list span,.contact-list a{color:var(--ink-2);word-break:break-all;}
.contact-list a:hover{color:var(--coral);}
.qr-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;text-align:center;box-shadow:var(--shadow-sm);}
.qr-card img{width:100%;max-width:230px;margin:0 auto 14px;border-radius:14px;border:1px solid var(--line);object-fit:contain;}
.qr-card p{margin:0;font-size:14px;color:var(--ink-2);font-weight:600;}

/* ===== footer ===== */
.site-footer{
  margin-top:0;background:#f3ecdd;border-top:1px solid var(--line);
  color:#242a3a;padding:36px 0 22px;
}
.footer-top{display:grid;grid-template-columns:.9fr 1.1fr;gap:32px;align-items:start;padding-bottom:24px;border-bottom:1px solid #e2d9c6;}
.footer-brand{display:flex;flex-direction:column;gap:12px;}
.footer-brand .brand-row{display:flex;align-items:center;gap:10px;}
.footer-brand .ai-page-logo{width:36px;height:36px;object-fit:contain;}
.footer-brand strong{font-size:17px;font-weight:800;color:#1b2030;}
.footer-brand p{margin:0;font-size:13.5px;color:#4a5468;line-height:1.7;max-width:360px;}
.footer-links h3{font-size:14px;font-weight:800;color:#1b2030;margin-bottom:12px;}
.footer-links ul{display:flex;flex-wrap:wrap;gap:8px 10px;}
.footer-links a{
  display:inline-block;font-size:13px;color:#3d4658;padding:5px 12px;
  background:#fffdf8;border:1px solid #e2d9c6;border-radius:999px;
  transition:color .2s ease,border-color .2s ease,transform .2s ease;
}
.footer-links a:hover{color:#b83a1b;border-color:#ffb9a6;transform:translateY(-2px);}
.footer-bottom{padding-top:18px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;font-size:13px;color:#4a5468;}
.footer-bottom a{color:#3d4658;}
.footer-bottom a:hover{color:#b83a1b;}

/* ===== float tools ===== */
.float-tools{position:fixed;right:18px;bottom:20px;z-index:200;display:flex;flex-direction:column;align-items:flex-end;gap:10px;}
.float-btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:56px;height:44px;padding:0 14px;border-radius:14px;
  background:var(--ink);color:#fff;font-size:13.5px;font-weight:800;
  border:1.5px solid rgba(255,255,255,.18);cursor:pointer;
  box-shadow:0 10px 22px rgba(27,32,48,.24);
  transition:transform .2s ease,background .2s ease;
}
.float-btn:hover{transform:translateY(-2px);background:#2c3550;}
.kefu-wrap{position:relative;}
.kefu-panel{
  position:absolute;right:0;bottom:56px;width:232px;
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:14px;
  box-shadow:0 16px 36px rgba(27,32,48,.20);
  display:none;text-align:center;
}
.kefu-panel.is-open{display:block;animation:fadeUp .25s ease both;}
.kefu-panel img{width:100%;border-radius:10px;border:1px solid var(--line);object-fit:contain;}
.kefu-panel p{margin:10px 0 0;font-size:13px;color:var(--ink-2);font-weight:600;}
@keyframes fadeUp{from{opacity:0;transform:translateY(8px);}to{opacity:1;transform:none;}}

/* ===== reveal ===== */
.js .reveal{opacity:0;transform:translateY(20px);transition:opacity .62s ease,transform .62s ease;}
.js .reveal.is-visible{opacity:1;transform:none;}

/* ===== responsive ===== */
@media (max-width:1120px){
  .nav-toggle{display:flex;}
  .nav{
    position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:10px;
    background:#fffdf8;border-bottom:1px solid var(--line);
    padding:12px 20px 22px;box-shadow:0 14px 28px rgba(27,32,48,.12);
    display:none;
  }
  .nav.is-open{display:flex;}
  .nav-links{flex-direction:column;align-items:stretch;justify-content:flex-start;}
  .nav-links a{padding:13px 8px;border-bottom:1px dashed var(--line);border-radius:0;}
  .nav-cta{align-self:flex-start;margin-top:6px;}
}
@media (max-width:980px){
  .hero-inner{grid-template-columns:1fr;gap:36px;}
  .hero-panel{max-width:520px;}
  .metrics-grid{grid-template-columns:repeat(2,1fr);}
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .timeline{grid-template-columns:1fr;gap:0;}
  .timeline::before{display:none;}
  .tl-item{text-align:left;padding:0 0 22px 56px;}
  .tl-dot{left:0;transform:none;}
  .about-grid,.match-grid,.contact-grid,.join-card{grid-template-columns:1fr;}
  .insight-grid{grid-template-columns:1fr;}
  .footer-top{grid-template-columns:1fr;}
}
@media (max-width:640px){
  .section{padding:52px 0;}
  .hero{padding:44px 0 40px;}
  .container{padding-left:16px;padding-right:16px;}
  .grid-3,.grid-4,.grid-2,.steps{grid-template-columns:1fr;}
  .lead-form{grid-template-columns:1fr;padding:20px;}
  .score-card{padding:20px;}
  .score-num{font-size:38px;}
  .btn{padding:12px 22px;font-size:14.5px;}
  .hero-actions{gap:10px;}
  .join-card{padding:30px 22px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .float-tools{right:12px;bottom:14px;}
  .contact-list b{flex:0 0 100%;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .js .reveal{opacity:1;transform:none;transition:none;}
  *{animation-duration:.01ms !important;transition-duration:.01ms !important;}
}