*{margin:0;padding:0;box-sizing:border-box}
:root{
  --red:#e21b2d;
  --red-deep:#b3121f;
  --red-soft:#fff1f2;
  --ink:#1f1a1c;
  --ink-2:#4a3f43;
  --line:#f0dde0;
  --bg:#fff8f7;
  --white:#ffffff;
  --radius:16px;
  --shadow:0 10px 30px rgba(190,20,40,.08);
}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;
  color:var(--ink);
  background:
    radial-gradient(circle at 8% 0%,rgba(226,27,45,.09),transparent 42%),
    radial-gradient(circle at 95% 18%,rgba(226,27,45,.07),transparent 38%),
    linear-gradient(180deg,#fff8f7 0%,#fffdfc 30%,#fff7f6 100%);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{text-decoration:none;color:inherit}
ul{list-style:none}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}

/* ============ HEADER ============ */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,248,247,.92);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{
  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:auto;max-height:40px;object-fit:contain}
.brand-name{font-size:18px;font-weight:800;letter-spacing:.5px;color:var(--red-deep);white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:0;flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none}
.nav-links::-webkit-scrollbar{display:none}
.nav-links a{
  display:inline-block;padding:8px 11px;font-size:14px;color:var(--ink-2);
  border-radius:8px;white-space:nowrap;transition:color .2s,background .2s;
}
.nav-links a:hover{color:var(--red);background:var(--red-soft)}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  font-size:14px;font-weight:700;border-radius:999px;padding:10px 20px;
  border:1px solid transparent;cursor:pointer;transition:transform .2s,box-shadow .2s,background .2s;
  font-family:inherit;white-space:nowrap;
}
.btn-primary{background:linear-gradient(135deg,var(--red),var(--red-deep));color:#fff;box-shadow:0 8px 20px rgba(226,27,45,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(226,27,45,.36)}
.btn-ghost{background:#fff;color:var(--red-deep);border-color:var(--line)}
.btn-ghost:hover{background:var(--red-soft);transform:translateY(-2px)}
.btn:active{transform:translateY(0) scale(.98)}
.menu-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  background:#fff;cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--red-deep);border-radius:2px;transition:.25s}
.menu-toggle.open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.menu-toggle.open span:nth-child(2){opacity:0}
.menu-toggle.open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.mobile-nav{
  display:none;flex-direction:column;gap:2px;padding:10px 0 16px;border-top:1px solid var(--line);
}
.mobile-nav a{padding:11px 12px;border-radius:8px;font-size:15px;color:var(--ink-2)}
.mobile-nav a:hover{background:var(--red-soft);color:var(--red)}
.mobile-nav.show{display:flex}

/* ============ HERO ============ */
.hero{
  position:relative;overflow:hidden;padding:78px 0 84px;
  background:
    radial-gradient(circle at 12% 22%,rgba(226,27,45,.18),transparent 46%),
    radial-gradient(circle at 88% 78%,rgba(226,27,45,.12),transparent 44%),
    linear-gradient(160deg,#fff2f1 0%,#fff8f7 55%,#ffffff 100%);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(226,27,45,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(226,27,45,.05) 1px,transparent 1px);
  background-size:56px 56px;
  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-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:#fff;border:1px solid var(--line);color:var(--red-deep);
  padding:6px 14px;border-radius:999px;font-size:13px;font-weight:700;
  box-shadow:var(--shadow);margin-bottom:20px;
}
.hero-eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--red);box-shadow:0 0 0 4px rgba(226,27,45,.14);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 4px rgba(226,27,45,.14)}50%{box-shadow:0 0 0 8px rgba(226,27,45,.05)}}
.hero h1{
  font-size:clamp(30px,4.4vw,50px);line-height:1.22;font-weight:900;letter-spacing:-.5px;
  color:var(--ink);margin-bottom:18px;
}
.hero h1 em{font-style:normal;color:var(--red);position:relative;display:inline-block}
.hero h1 em::after{
  content:"";position:absolute;left:0;right:0;bottom:2px;height:9px;
  background:rgba(226,27,45,.16);border-radius:5px;z-index:-1;
}
.hero-sub{font-size:16px;color:var(--ink-2);max-width:560px;margin-bottom:26px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:30px}
.hero-cta .btn{padding:13px 26px;font-size:15px}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;max-width:560px}
.hero-tags span{
  font-size:13px;color:var(--red-deep);background:#fff;border:1px solid var(--line);
  padding:5px 12px;border-radius:8px;transition:.2s;
}
.hero-tags span:hover{background:var(--red-soft);transform:translateY(-2px)}
.hero-visual{display:flex;flex-direction:column;gap:14px}
.metric-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:20px 22px;box-shadow:var(--shadow);position:relative;overflow:hidden;
  transition:transform .3s,box-shadow .3s;
}
.metric-card:hover{transform:translateY(-4px);box-shadow:0 16px 38px rgba(190,20,40,.14)}
.metric-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:linear-gradient(180deg,var(--red),var(--red-deep))}
.metric-card .m-top{display:flex;align-items:baseline;justify-content:space-between;gap:10px;margin-bottom:6px}
.metric-card .m-num{font-size:26px;font-weight:900;color:var(--red-deep);line-height:1.1}
.metric-card .m-label{font-size:13px;color:var(--ink-2);font-weight:600}
.metric-card .m-desc{font-size:12.5px;color:#8a7a7e}
.metric-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}

/* ============ SECTION BASE ============ */
.section{padding:72px 0}
.section-head{max-width:720px;margin:0 auto 42px;text-align:center}
.section-tag{
  display:inline-block;font-size:12.5px;font-weight:800;letter-spacing:2px;
  color:var(--red);background:var(--red-soft);padding:5px 14px;border-radius:999px;margin-bottom:14px;
}
.section-head h2{font-size:clamp(24px,3.2vw,34px);font-weight:900;line-height:1.3;margin-bottom:12px;color:var(--ink)}
.section-head p{font-size:15px;color:var(--ink-2)}
.section-alt{background:linear-gradient(180deg,rgba(255,241,242,.55),rgba(255,251,250,.9))}

/* ============ INTRO / ABOUT ============ */
.about-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:34px;align-items:start}
.about-text p{font-size:15px;color:var(--ink-2);margin-bottom:16px}
.about-points{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:8px}
.about-point{
  background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 16px;
  font-size:13.5px;color:var(--ink-2);transition:.25s;
}
.about-point b{display:block;color:var(--red-deep);font-size:14px;margin-bottom:2px}
.about-point:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.about-media{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.media-frame{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow);
}
.media-frame img{width:100%;height:auto;object-fit:contain;transition:transform .5s}
.media-frame:hover img{transform:scale(1.04)}
.media-frame.wide{grid-column:1 / -1}

/* ============ CAPABILITY CARDS ============ */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.cap-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 22px;box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s;
  position:relative;overflow:hidden;
}
.cap-card::after{
  content:"";position:absolute;right:-30px;top:-30px;width:90px;height:90px;border-radius:50%;
  background:radial-gradient(circle,rgba(226,27,45,.10),transparent 70%);
}
.cap-card:hover{transform:translateY(-6px);box-shadow:0 18px 40px rgba(190,20,40,.14)}
.cap-icon{
  width:46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--red),var(--red-deep));color:#fff;font-weight:900;font-size:18px;
  margin-bottom:16px;box-shadow:0 6px 16px rgba(226,27,45,.26);
}
.cap-card h3{font-size:17px;font-weight:800;margin-bottom:8px}
.cap-card p{font-size:14px;color:var(--ink-2)}

/* ============ FLOW STEPS ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:step}
.step{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 20px 22px;position:relative;box-shadow:var(--shadow);transition:.3s;
}
.step:hover{transform:translateY(-5px);border-color:rgba(226,27,45,.35)}
.step::before{
  counter-increment:step;content:"0" counter(step);
  position:absolute;right:16px;top:12px;font-size:26px;font-weight:900;
  color:rgba(226,27,45,.13);line-height:1;
}
.step h3{font-size:16px;font-weight:800;margin-bottom:8px;color:var(--red-deep)}
.step p{font-size:13.5px;color:var(--ink-2)}

/* ============ SCENES TAGS ============ */
.scene-wrap{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.scene-chip{
  background:#fff;border:1px solid var(--line);border-radius:10px;padding:9px 16px;
  font-size:13.5px;color:var(--ink-2);transition:.22s;box-shadow:0 3px 10px rgba(190,20,40,.04);
}
.scene-chip:hover{background:var(--red-soft);color:var(--red-deep);transform:translateY(-3px);border-color:rgba(226,27,45,.3)}

/* ============ MODEL MARQUEE ============ */
.model-band{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 0;overflow:hidden;box-shadow:var(--shadow);position:relative;
}
.model-track{display:flex;gap:14px;width:max-content;animation:slide 34s linear infinite}
.model-band:hover .model-track{animation-play-state:paused}
.model-track span{
  font-size:13.5px;font-weight:700;color:var(--red-deep);background:var(--red-soft);
  padding:7px 16px;border-radius:999px;white-space:nowrap;
}
@keyframes slide{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ============ COMPARE TABLE ============ */
.compare-wrap{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);overflow:hidden;
}
.compare-score{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 24px;background:linear-gradient(135deg,#fff2f1,#fff9f8);border-bottom:1px solid var(--line);
}
.score-left{display:flex;align-items:center;gap:16px}
.score-num{font-size:40px;font-weight:900;color:var(--red);line-height:1}
.score-num small{font-size:15px;color:#9a8a8e;font-weight:700}
.score-meta b{display:block;font-size:15px;color:var(--ink);margin-bottom:2px}
.score-meta span{font-size:13px;color:var(--ink-2)}
.stars{color:#ff9a12;letter-spacing:3px;font-size:18px}
.table-scroll{overflow-x:auto}
table{width:100%;border-collapse:collapse;min-width:640px}
thead th{
  background:#fff4f3;color:var(--red-deep);font-size:13.5px;font-weight:800;
  text-align:left;padding:14px 18px;white-space:nowrap;border-bottom:1px solid var(--line);
}
tbody td{padding:14px 18px;font-size:13.8px;color:var(--ink-2);border-bottom:1px solid #faeef0;vertical-align:top}
tbody tr:last-child td{border-bottom:none}
tbody tr:hover td{background:#fffaf9}
td.highlight{color:var(--red-deep);font-weight:700}

/* ============ CASE ============ */
.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;box-shadow:var(--shadow);transition:.3s;
}
.case-card:hover{transform:translateY(-6px);box-shadow:0 18px 40px rgba(190,20,40,.15)}
.case-img{aspect-ratio:16/10;background:#fff4f3;overflow:hidden}
.case-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.case-card:hover .case-img img{transform:scale(1.05)}
.case-body{padding:18px 20px 20px}
.case-body h3{font-size:16px;font-weight:800;margin-bottom:8px}
.case-body p{font-size:13.5px;color:var(--ink-2)}

/* ============ REVIEWS ============ */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.review-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow);transition:.3s;display:flex;flex-direction:column;gap:12px;
}
.review-card:hover{transform:translateY(-5px);box-shadow:0 16px 36px rgba(190,20,40,.13)}
.review-top{display:flex;align-items:center;gap:12px}
.avatar{
  width:42px;height:42px;border-radius:50%;flex-shrink:0;
  background:linear-gradient(135deg,var(--red),var(--red-deep));color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:16px;
}
.review-name{font-size:14.5px;font-weight:800}
.review-role{font-size:12.5px;color:#9a8a8e}
.review-text{font-size:13.8px;color:var(--ink-2);flex:1}
.review-stars{color:#ff9a12;font-size:14px;letter-spacing:2px}

/* ============ ARTICLE / LINK ============ */
.article-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.article-item{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 18px;
  transition:.25s;box-shadow:0 4px 12px rgba(190,20,40,.04);
}
.article-item:hover{transform:translateY(-3px);border-color:rgba(226,27,45,.3);box-shadow:var(--shadow)}
.article-item span{font-size:14px;font-weight:600;color:var(--ink)}
.article-item em{font-style:normal;font-size:12.5px;color:var(--red);font-weight:700;white-space:nowrap}

/* ============ FORM ============ */
.form-wrap{
  display:grid;grid-template-columns:.9fr 1.1fr;gap:34px;align-items:start;
  background:#fff;border:1px solid var(--line);border-radius:20px;padding:34px;box-shadow:var(--shadow);
}
.form-info h3{font-size:22px;font-weight:900;margin-bottom:12px}
.form-info p{font-size:14px;color:var(--ink-2);margin-bottom:18px}
.contact-list{display:flex;flex-direction:column;gap:10px;margin-bottom:22px}
.contact-list li{font-size:13.8px;color:var(--ink-2);display:flex;gap:8px}
.contact-list b{color:var(--red-deep);min-width:74px;display:inline-block}
.qr-box{display:flex;align-items:center;gap:14px;background:var(--red-soft);border-radius:12px;padding:14px}
.qr-box img{width:88px;height:88px;object-fit:contain;border-radius:8px;background:#fff;padding:4px}
.qr-box span{font-size:13px;color:var(--ink-2);line-height:1.5}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field{display:flex;flex-direction:column;gap:6px}
.field.full{grid-column:1 / -1}
.field label{font-size:13px;font-weight:700;color:var(--ink)}
.field input,.field select,.field textarea{
  width:100%;font-family:inherit;font-size:14px;color:var(--ink);
  border:1px solid var(--line);border-radius:10px;padding:11px 14px;background:#fffaf9;
  transition:.2s;outline:none;
}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--red);background:#fff;box-shadow:0 0 0 3px rgba(226,27,45,.10);
}
.field textarea{resize:vertical;min-height:96px}
.form-submit{margin-top:6px;width:100%;padding:13px 20px;font-size:15px}

/* ============ FAQ ============ */
.faq-wrap{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:box-shadow .25s,border-color .25s;
}
.faq-item.open{border-color:rgba(226,27,45,.35);box-shadow:var(--shadow)}
.faq-q{
  width:100%;text-align:left;background:none;border:none;cursor:pointer;font-family:inherit;
  padding:17px 20px;font-size:15px;font-weight:700;color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;gap:14px;
}
.faq-q::after{content:"+";font-size:20px;font-weight:400;color:var(--red);transition:transform .25s;line-height:1}
.faq-item.open .faq-q::after{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease}
.faq-a p{padding:0 20px 18px;font-size:14px;color:var(--ink-2)}

/* ============ LINKS / FOOTER ============ */
.friend-links{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:center;
  padding:26px 0 6px;
}
.friend-links a{
  font-size:13px;color:var(--ink-2);background:#fff;border:1px solid var(--line);
  border-radius:8px;padding:7px 14px;transition:.2s;
}
.friend-links a:hover{color:var(--red-deep);background:var(--red-soft);transform:translateY(-2px)}
.site-footer{
  background:#241114;color:#f6dfe1;padding:44px 0 22px;margin-top:44px;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:30px;align-items:start}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .ai-page-logo{max-height:36px;width:auto;background:#fff;border-radius:8px;padding:3px}
.footer-brand b{color:#fff;font-size:16px;letter-spacing:.5px}
.footer-about{font-size:13px;color:#e3c5c8;line-height:1.8;max-width:340px}
.footer-col h4{font-size:14px;color:#fff;font-weight:800;margin-bottom:12px}
.footer-col ul{display:flex;flex-direction:column;gap:8px}
.footer-col a,.footer-col li{font-size:13px;color:#e3c5c8;transition:.2s}
.footer-col a:hover{color:#fff}
.footer-bottom{
  margin-top:30px;padding-top:18px;border-top:1px solid rgba(255,255,255,.13);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center;
  font-size:12.5px;color:#d5b3b7;
}
.footer-bottom a{color:#f6dfe1}
.footer-bottom a:hover{color:#fff}

/* ============ FLOAT ============ */
.float-group{position:fixed;right:18px;bottom:22px;z-index:120;display:flex;flex-direction:column;gap:10px}
.float-btn{
  width:48px;height:48px;border-radius:50%;border:none;cursor:pointer;
  display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:800;
  color:#fff;background:linear-gradient(135deg,var(--red),var(--red-deep));
  box-shadow:0 10px 22px rgba(226,27,45,.34);transition:.25s;font-family:inherit;
}
.float-btn:hover{transform:translateY(-3px) scale(1.05)}
.float-btn.top{opacity:0;pointer-events:none;background:#241114;font-size:15px}
.float-btn.top.show{opacity:1;pointer-events:auto}
.cs-pop{
  position:fixed;right:18px;bottom:132px;z-index:121;width:200px;
  background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px;
  box-shadow:0 18px 40px rgba(190,20,40,.18);
  display:none;text-align:center;
}
.cs-pop.show{display:block;animation:pop .22s ease}
@keyframes pop{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
.cs-pop img{width:120px;height:120px;object-fit:contain;margin:0 auto 8px}
.cs-pop p{font-size:12.5px;color:var(--ink-2);line-height:1.6}

/* ============ ANIMATE ============ */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:translateY(0)}

/* ============ RESPONSIVE ============ */
@media(max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:34px}
  .hero-sub{max-width:100%}
  .card-grid,.case-grid,.review-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .about-grid{grid-template-columns:1fr}
  .form-wrap{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .nav-links{display:none}
  .nav-actions .btn-ghost{display:none}
  .menu-toggle{display:flex}
  .mobile-nav{display:none}
}
@media(max-width:720px){
  .section{padding:52px 0}
  .hero{padding:52px 0 58px}
  .card-grid,.case-grid,.review-grid,.steps,.about-points,.article-list,.form-grid{grid-template-columns:1fr}
  .metric-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .nav-actions .btn-primary{padding:9px 14px;font-size:13px}
  .brand-name{font-size:16px}
  .score-num{font-size:32px}
  .form-wrap{padding:22px}
  .float-group{right:12px;bottom:16px}
  .cs-pop{right:12px;bottom:124px;width:180px}
  .friend-links{padding:20px 0 4px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}