:root{
  --red:#e01f2d;
  --red-deep:#a8101f;
  --red-soft:#fff1f0;
  --ink:#1d1416;
  --ink-2:#4a3a3c;
  --muted:#806a6c;
  --line:#f0dcd9;
  --radius:18px;
  --shadow:0 10px 30px rgba(190,40,40,.08);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.7;
  color:var(--ink);
  background-color:#fff8f5;
  background-image:
    radial-gradient(900px 420px at 6% -80px, rgba(224,31,45,.13), transparent 66%),
    radial-gradient(820px 460px at 98% 10%, rgba(255,122,69,.12), transparent 66%),
    linear-gradient(180deg,#fff8f5 0%, #fffdfc 42%, #fff7f3 100%);
}
img{max-width:100%;height:auto;display:block;border:0}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font-family:inherit}
section[id]{scroll-margin-top:78px}

.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,250,248,.94);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(224,31,45,.12);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:66px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.ai-page-logo{display:block;width:auto;max-height:34px;max-width:100%;height:auto}
.brand-name{font-size:19px;font-weight:900;letter-spacing:.5px;color:var(--ink);white-space:nowrap}
.nav-links{display:flex;align-items:center;flex-wrap:nowrap;gap:0}
.nav-links a{
  display:block;padding:8px 12px;font-size:14.5px;font-weight:500;color:var(--ink-2);
  border-radius:8px;white-space:nowrap;transition:color .2s ease,background-color .2s ease;
}
.nav-links a:hover{color:var(--red);background:var(--red-soft)}
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.nav-toggle{
  display:none;width:42px;height:42px;padding:0;border:1px solid rgba(224,31,45,.25);
  border-radius:10px;background:#fff;cursor:pointer;
  flex-direction:column;justify-content:center;align-items:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--red);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 26px;border-radius:999px;font-size:15px;font-weight:700;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .22s cubic-bezier(.2,.7,.3,1),box-shadow .22s ease,background-color .22s ease,color .22s ease;
}
.btn-primary{background:linear-gradient(135deg,#f5323f,#c8121f);color:#fff;box-shadow:0 10px 22px rgba(200,18,31,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(200,18,31,.36)}
.btn-ghost{background:#fff;color:var(--red-deep);border-color:rgba(200,18,31,.3)}
.btn-ghost:hover{transform:translateY(-2px);border-color:var(--red);box-shadow:0 12px 24px rgba(200,18,31,.14)}
.btn-light{background:#fff;color:var(--red-deep);box-shadow:0 12px 26px rgba(80,5,15,.22)}
.btn-light:hover{transform:translateY(-2px)}
.btn-sm{padding:9px 18px;font-size:14px}

/* ---------- Hero ---------- */
.hero{position:relative;padding:58px 0 46px;overflow:hidden}
.hero::before{
  content:"";position:absolute;right:-170px;top:-240px;width:540px;height:540px;border-radius:50%;
  background:radial-gradient(circle,rgba(224,31,45,.16),transparent 68%);pointer-events:none;
}
.hero::after{
  content:"";position:absolute;left:-150px;bottom:-220px;width:400px;height:400px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,122,69,.14),transparent 70%);pointer-events:none;
}
.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr .95fr;gap:46px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  background:rgba(224,31,45,.09);color:var(--red-deep);font-size:13px;font-weight:800;
  letter-spacing:.4px;border:1px solid rgba(224,31,45,.18);
}
.hero h1{font-size:clamp(28px,4.4vw,46px);line-height:1.24;font-weight:900;letter-spacing:-.5px;margin:18px 0 16px;color:#20151a}
.hl{color:var(--red);position:relative;display:inline-block}
.hl::after{content:"";position:absolute;left:0;right:0;bottom:4px;height:9px;border-radius:6px;background:rgba(224,31,45,.14);z-index:-1}
.hero-lead{font-size:16.5px;color:var(--ink-2);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:22px;font-size:14px;color:var(--ink-2)}
.hero-points li{display:flex;align-items:center;gap:7px}
.hero-points li::before{content:"";width:16px;height:16px;border-radius:50%;background:rgba(224,31,45,.12);border:1px solid rgba(224,31,45,.35);flex-shrink:0}

.hero-visual{display:flex;flex-direction:column;gap:16px}
.hv-card{
  position:relative;background:#fff;border:1px solid rgba(224,31,45,.16);border-radius:22px;
  padding:26px;box-shadow:0 24px 52px rgba(180,30,45,.13);overflow:hidden;
  animation:floatY 7s ease-in-out infinite;
}
.hv-card::after{
  content:"";position:absolute;right:-70px;top:-70px;width:190px;height:190px;border-radius:50%;
  background:radial-gradient(circle,rgba(224,31,45,.16),transparent 70%);
}
@keyframes floatY{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
.hv-head{display:flex;align-items:center;gap:9px;font-weight:900;font-size:15px;color:var(--red-deep);margin-bottom:16px}
.hv-head .dot{width:9px;height:9px;border-radius:50%;background:var(--red);box-shadow:0 0 0 4px rgba(224,31,45,.16);animation:pulseDot 2.4s ease-in-out infinite}
@keyframes pulseDot{0%,100%{box-shadow:0 0 0 4px rgba(224,31,45,.16)}50%{box-shadow:0 0 0 9px rgba(224,31,45,.05)}}
.hv-steps{display:flex;flex-direction:column;gap:11px}
.hv-steps li{
  display:flex;align-items:center;gap:12px;padding:11px 14px;border-radius:12px;
  background:linear-gradient(90deg,rgba(224,31,45,.08),rgba(224,31,45,.01));
  font-size:14.5px;font-weight:600;color:var(--ink);
}
.hv-idx{font-size:12px;font-weight:900;color:#fff;background:linear-gradient(135deg,#f5323f,#c8121f);border-radius:6px;padding:2px 7px;letter-spacing:.5px}
.hv-chips{display:flex;flex-wrap:wrap;gap:8px}
.hv-chips span{
  font-size:12.5px;font-weight:600;color:var(--ink-2);padding:6px 13px;border-radius:999px;
  background:#fff;border:1px solid rgba(224,31,45,.18);
}

/* ---------- Sections ---------- */
.section{padding:56px 0}
.section-head{max-width:780px;margin:0 auto 34px;text-align:center}
.section-tag{display:inline-block;font-size:12.5px;font-weight:900;letter-spacing:2px;color:var(--red);margin-bottom:10px}
.section-head h2{font-size:clamp(23px,3vw,32px);font-weight:900;line-height:1.32;color:#20151a}
.section-head p{margin-top:12px;color:var(--ink-2);font-size:15.5px}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .6s ease,transform .6s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}

/* ---------- About ---------- */
.about-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:36px;align-items:start}
.about-text p{color:var(--ink-2);font-size:15.5px;margin-bottom:14px}
.about-list{display:grid;gap:11px;margin-top:18px}
.about-list li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:var(--ink)}
.about-list li::before{
  content:"";flex-shrink:0;width:18px;height:18px;margin-top:4px;border-radius:6px;
  background:linear-gradient(135deg,#f5323f,#c8121f);
  -webkit-mask:radial-gradient(circle at 50% 50%,transparent 3px,#000 3.5px);mask:radial-gradient(circle at 50% 50%,transparent 3px,#000 3.5px);
}
.about-media{border-radius:20px;overflow:hidden;border:1px solid var(--line);box-shadow:0 22px 46px rgba(180,30,45,.13);background:#fff;padding:10px}
.about-media img{border-radius:12px;width:100%}

.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:38px}
.metric{
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px 16px;text-align:center;
  box-shadow:var(--shadow);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.metric:hover{transform:translateY(-4px);box-shadow:0 18px 38px rgba(180,30,45,.15);border-color:rgba(224,31,45,.28)}
.metric strong{display:block;font-size:26px;font-weight:900;color:var(--red);line-height:1.25}
.metric span{font-size:13.5px;color:var(--muted)}

/* ---------- Cards ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.card{
  display:flex;flex-direction:column;gap:10px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:24px;box-shadow:0 6px 18px rgba(180,30,45,.06);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.card:hover{transform:translateY(-5px);box-shadow:0 20px 42px rgba(180,30,45,.14);border-color:rgba(224,31,45,.3)}
.card h3{font-size:17px;font-weight:800;color:#20151a}
.card p{font-size:14.5px;color:var(--ink-2)}
.icon-box{
  width:44px;height:44px;border-radius:13px;display:grid;place-items:center;flex-shrink:0;
  background:linear-gradient(135deg,rgba(245,50,63,.15),rgba(200,18,31,.07));
  border:1px solid rgba(224,31,45,.18);color:var(--red);
}
.icon-box svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;justify-content:center}
.tag-cloud span{
  padding:8px 16px;border-radius:999px;background:#fff;border:1px solid rgba(224,31,45,.18);
  font-size:13.5px;color:var(--ink-2);transition:background-color .22s ease,color .22s ease,transform .22s ease;
}
.tag-cloud span:hover{background:var(--red);color:#fff;border-color:var(--red);transform:translateY(-2px)}

/* ---------- Network ---------- */
.network-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:start}
.network-copy h3{font-size:20px;font-weight:900;color:#20151a;margin-bottom:12px}
.network-copy p{font-size:15px;color:var(--ink-2);margin-bottom:16px}
.network-copy ul{display:grid;gap:10px}
.network-copy li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--ink)}
.network-copy li::before{content:"";flex-shrink:0;width:7px;height:7px;margin-top:9px;border-radius:50%;background:var(--red)}
.network-media{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.network-media figure{
  margin:0;padding:10px;aspect-ratio:4/3;background:#fff;border:1px solid var(--line);border-radius:18px;
  display:flex;align-items:center;justify-content:center;overflow:hidden;box-shadow:0 10px 26px rgba(180,30,45,.08);
  transition:transform .25s ease,box-shadow .25s ease;
}
.network-media figure:hover{transform:translateY(-4px);box-shadow:0 18px 36px rgba(180,30,45,.15)}
.network-media img{width:100%;height:100%;object-fit:contain;border-radius:10px}

/* ---------- Steps ---------- */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.step{
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px 18px;
  box-shadow:0 6px 18px rgba(180,30,45,.06);transition:transform .25s ease,box-shadow .25s ease;
}
.step:hover{transform:translateY(-5px);box-shadow:0 18px 36px rgba(180,30,45,.13)}
.step-num{
  width:34px;height:34px;border-radius:50%;display:grid;place-items:center;margin-bottom:14px;
  background:linear-gradient(135deg,#f5323f,#c8121f);color:#fff;font-size:14px;font-weight:900;
}
.step h3{font-size:15.5px;font-weight:800;color:#20151a;margin-bottom:8px}
.step p{font-size:13.5px;color:var(--ink-2)}

/* ---------- Compare ---------- */
.score-panel{display:grid;grid-template-columns:.82fr 1.18fr;gap:22px;align-items:stretch;margin-bottom:26px}
.score-box{
  border-radius:20px;padding:28px;display:flex;flex-direction:column;justify-content:center;gap:6px;
  background:linear-gradient(150deg,#e01f2d,#8c0c19);color:#fff;box-shadow:0 22px 44px rgba(160,20,30,.3);
}
.score-stars{font-size:20px;letter-spacing:4px;color:#ffd75e}
.score-box .num{font-size:52px;font-weight:900;line-height:1.05}
.score-box .num small{font-size:17px;font-weight:700;opacity:.88}
.score-box p{font-size:14.5px;color:rgba(255,255,255,.92)}
.score-points{
  background:#fff;border:1px solid var(--line);border-radius:20px;padding:26px;
  box-shadow:0 10px 26px rgba(180,30,45,.08);
}
.score-points h3{font-size:16.5px;font-weight:900;color:#20151a;margin-bottom:14px}
.score-points ul{display:grid;grid-template-columns:1fr 1fr;gap:10px 18px}
.score-points li{display:flex;gap:8px;align-items:flex-start;font-size:14px;color:var(--ink-2)}
.score-points li::before{content:"";flex-shrink:0;width:7px;height:7px;margin-top:8px;border-radius:50%;background:var(--red)}

.table-wrap{
  overflow-x:auto;-webkit-overflow-scrolling:touch;background:#fff;border:1px solid var(--line);
  border-radius:18px;box-shadow:0 12px 30px rgba(180,30,45,.09);
}
table{width:100%;border-collapse:collapse;min-width:720px;font-size:14.5px}
th,td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
thead th{background:linear-gradient(180deg,#fff2f0,#ffe9e6);color:var(--red-deep);font-weight:900;white-space:nowrap}
tbody tr:last-child td{border-bottom:none}
tbody tr:hover td{background:#fff9f7}
td.best{color:var(--red-deep);font-weight:700}

/* ---------- Demand / Form ---------- */
.demand-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:28px;align-items:start}
.demand-media{background:#fff;border:1px solid var(--line);border-radius:20px;padding:12px;box-shadow:0 18px 40px rgba(180,30,45,.1)}
.demand-media img{border-radius:12px;width:100%}
.demand-tips{margin-top:18px;display:grid;gap:10px}
.demand-tips li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--ink-2)}
.demand-tips li::before{content:"";flex-shrink:0;width:7px;height:7px;margin-top:9px;border-radius:50%;background:var(--red)}

.form-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:28px;box-shadow:0 18px 42px rgba(180,30,45,.11)}
.form-card h3{font-size:19px;font-weight:900;color:#20151a;margin-bottom:6px}
.form-card .form-sub{font-size:14px;color:var(--muted);margin-bottom:20px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:7px}
.field.full{grid-column:1/-1}
.field label{font-size:13.5px;font-weight:700;color:var(--ink)}
.field input,.field select,.field textarea{
  width:100%;font-family:inherit;font-size:14.5px;color:var(--ink);background:#fffaf8;
  border:1px solid #efd6d2;border-radius:10px;padding:12px 14px;
  transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.field textarea{resize:vertical;min-height:112px;line-height:1.6}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--red);background:#fff;box-shadow:0 0 0 3px rgba(224,31,45,.12);
}
.form-actions{margin-top:20px;display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.form-note{font-size:12.5px;color:var(--muted)}

/* ---------- Reviews ---------- */
.review-card{position:relative}
.review-stars{color:#ff9d00;font-size:14px;letter-spacing:2px}
.review-text{font-size:14.5px;color:var(--ink-2)}
.review-user{display:flex;align-items:center;gap:10px;margin-top:6px;padding-top:14px;border-top:1px dashed var(--line)}
.avatar{
  width:36px;height:36px;border-radius:50%;display:grid;place-items:center;flex-shrink:0;
  background:linear-gradient(135deg,#f5323f,#c8121f);color:#fff;font-size:14px;font-weight:900;
}
.review-user strong{display:block;font-size:14px;color:var(--ink)}
.review-user span{display:block;font-size:12.5px;color:var(--muted)}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:920px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:border-color .25s ease,box-shadow .25s ease}
.faq-item.open{border-color:rgba(224,31,45,.35);box-shadow:0 14px 30px rgba(180,30,45,.11)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:16px 20px;background:none;border:0;font-size:15.5px;font-weight:700;color:var(--ink);
  text-align:left;cursor:pointer;transition:color .2s ease;
}
.faq-q:hover{color:var(--red-deep)}
.faq-q::after{content:"+";font-size:20px;font-weight:700;color:var(--red);line-height:1;transition:transform .28s ease}
.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:14.5px;color:var(--ink-2)}

/* ---------- Info columns ---------- */
.info-col{background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px;box-shadow:0 8px 22px rgba(180,30,45,.07)}
.info-col h3{font-size:16.5px;font-weight:900;color:#20151a;margin-bottom:14px}
.info-col ul{display:grid;gap:11px}
.info-col li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--ink-2)}
.info-col li::before{content:"";flex-shrink:0;width:7px;height:7px;margin-top:9px;border-radius:50%;background:var(--red)}

.article-list{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.article-card{
  display:flex;flex-direction:column;gap:8px;background:#fff;border:1px solid var(--line);
  border-radius:16px;padding:20px;box-shadow:0 6px 18px rgba(180,30,45,.06);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.article-card:hover{transform:translateY(-4px);box-shadow:0 18px 36px rgba(180,30,45,.13);border-color:rgba(224,31,45,.3)}
.article-card h3{font-size:15.5px;font-weight:800;color:#20151a}
.article-card p{font-size:13.5px;color:var(--ink-2)}
.article-card .more{font-size:13px;font-weight:800;color:var(--red)}

/* ---------- Partner CTA ---------- */
.partner-card{
  display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;
  border-radius:24px;padding:36px;
  background:linear-gradient(135deg,#e62233,#a20f1e 70%);
  box-shadow:0 26px 52px rgba(150,15,28,.32);
  color:#fff;
}
.partner-copy{max-width:660px}
.partner-copy h2{font-size:clamp(21px,2.6vw,28px);font-weight:900;line-height:1.34;margin-bottom:12px;color:#fff}
.partner-copy p{font-size:15px;color:rgba(255,255,255,.92);margin-bottom:14px}
.partner-copy ul{display:flex;flex-wrap:wrap;gap:10px 22px}
.partner-copy li{font-size:14px;color:rgba(255,255,255,.95);display:flex;gap:8px;align-items:center}
.partner-copy li::before{content:"";width:7px;height:7px;border-radius:50%;background:#ffd75e}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:28px;align-items:start}
.contact-list{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.contact-item{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 18px;box-shadow:0 6px 18px rgba(180,30,45,.06)}
.contact-item span{display:block;font-size:12.5px;color:var(--muted);margin-bottom:4px}
.contact-item strong{display:block;font-size:15px;color:var(--ink);font-weight:800;word-break:break-all}
.contact-item a{color:var(--red-deep);font-weight:800}
.qr-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px;text-align:center;box-shadow:0 12px 30px rgba(180,30,45,.1)}
.qr-card img{width:100%;max-width:230px;margin:0 auto 12px;border-radius:12px}
.qr-card p{font-size:13.5px;color:var(--ink-2)}

/* ---------- Footer ---------- */
.site-footer{background:#2a1016;color:#f2dcd9;padding:44px 0 22px;margin-top:0}
.footer-inner{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:28px}
.footer-col h3{font-size:14.5px;font-weight:900;color:#ffffff;margin-bottom:14px}
.footer-col p{font-size:13.5px;color:#e0c2c0;line-height:1.75}
.footer-brand-name{font-size:18px;font-weight:900;color:#ffffff;margin-bottom:10px}
.footer-col ul{display:grid;gap:9px}
.footer-col li a,.footer-col li{font-size:13.5px;color:#e8cbca;transition:color .2s ease}
.footer-col li a:hover{color:#ffffff;text-decoration:underline}
.ai-page-home-link{display:inline-block;margin-top:14px;font-size:13.5px;font-weight:800;color:#ffd0cb;border-bottom:1px solid rgba(255,208,203,.5);padding-bottom:2px}
.ai-page-home-link:hover{color:#ffffff;border-bottom-color:#ffffff}
.footer-bottom{margin-top:28px;padding-top:16px;border-top:1px solid rgba(255,255,255,.12)}
.footer-bottom p{font-size:13px;color:#cfaeac}

/* ---------- Float ---------- */
.float-bar{position:fixed;right:18px;bottom:18px;z-index:90;display:flex;flex-direction:column;gap:10px}
.float-btn{
  width:48px;height:48px;border-radius:50%;display:grid;place-items:center;cursor:pointer;
  background:#fff;border:1px solid rgba(224,31,45,.25);color:var(--red);
  box-shadow:0 10px 24px rgba(180,30,45,.2);
  transition:transform .22s ease,background-color .22s ease,color .22s ease,opacity .22s ease;
}
.float-btn:hover{background:var(--red);color:#fff;transform:translateY(-3px)}
.float-btn svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
#backTop{opacity:0;pointer-events:none}
#backTop.visible{opacity:1;pointer-events:auto}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:34px}
  .about-grid{grid-template-columns:1fr}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(3,1fr)}
  .score-panel{grid-template-columns:1fr}
  .network-grid{grid-template-columns:1fr}
  .demand-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .article-list{grid-template-columns:repeat(2,1fr)}
  .footer-inner{grid-template-columns:1fr 1fr}
}
@media (max-width:960px){
  .site-nav{
    position:absolute;left:0;right:0;top:100%;display:none;
    background:#fffdfb;border-bottom:1px solid var(--line);box-shadow:0 20px 34px rgba(160,30,40,.14);
  }
  .site-nav.open{display:block}
  .nav-links{flex-direction:column;align-items:stretch;gap:0;padding:10px 16px 16px}
  .nav-links a{padding:12px 10px;border-radius:10px}
  .nav-toggle{display:flex}
}
@media (max-width:860px){
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .grid-2{grid-template-columns:1fr}
  .score-points ul{grid-template-columns:1fr}
}
@media (max-width:640px){
  .section{padding:44px 0}
  .hero{padding:40px 0 34px}
  .grid-3{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .metrics{grid-template-columns:1fr 1fr;gap:12px}
  .article-list{grid-template-columns:1fr}
  .contact-list{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .network-media{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr;gap:22px}
  .partner-card{padding:26px 22px}
  .score-box .num{font-size:44px}
  .hero h1{letter-spacing:0}
}
@media (max-width:420px){
  .brand-name{font-size:16px}
  .btn-sm{padding:8px 13px;font-size:13px}
  .container{padding:0 16px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
}

.reveal{opacity:1 !important;transform:none !important}