/* =================================================================
   科创安信 kcax.cn — 技术蓝皮书 · 印章信任
   布局原则：全部流式栅格，无绝对定位装饰，动效不改变布局尺寸
   ================================================================= */

:root{
  --paper:#F6F2E9;
  --paper-2:#EFE8DA;
  --card:#FFFFFF;
  --ink:#17222E;
  --ink-2:#46525F;
  --ink-3:#7B8590;
  --line:#DED5C3;
  --line-soft:#E8E1D2;

  --navy:#0C1C2E;
  --navy-2:#12283E;
  --navy-line:rgba(160,185,210,.18);
  --on-navy:#E8EDF3;
  --on-navy-2:#98A9BA;

  --blue:#1E5FA8;
  --blue-ink:#143E6F;
  --seal:#C2452A;
  --seal-deep:#A63720;
  --seal-soft:rgba(194,69,42,.08);

  --orange:#EA6A25;
  --orange-2:#F8862E;
  --orange-3:#F8B73E;

  --radius:14px;
  --radius-lg:20px;
  --max:1180px;

  --font-serif:"Noto Serif SC","Songti SC","SimSun",serif;
  --font-sans:"IBM Plex Sans","Noto Sans SC",-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"IBM Plex Mono","Noto Sans SC",ui-monospace,Consolas,monospace;
  --ease:cubic-bezier(.25,.8,.3,1);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-sans);
  background:var(--paper);
  color:var(--ink);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
ul,ol{list-style:none}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}

.container{max-width:var(--max);margin:0 auto;padding:0 32px;width:100%}
.section{padding:96px 0}
.section-tinted{background:var(--paper-2)}
.section-dark{background:var(--navy);color:var(--on-navy)}

/* ---------- shared type ---------- */
.kicker{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:12px;font-weight:500;
  letter-spacing:.16em;color:var(--blue);
}
.kicker-index{
  display:inline-grid;place-items:center;min-width:30px;height:22px;padding:0 6px;
  background:var(--navy);color:var(--paper);border-radius:4px;font-size:11px;letter-spacing:.05em;
}
.kicker-light{color:#8FC3EC}
.kicker-light .kicker-index{background:var(--seal);color:#fff}
.kicker-orange{color:#F4A06B}
.kicker-orange .kicker-index{background:var(--orange);color:#fff}

.section-title{
  font-family:var(--font-serif);
  font-weight:900;
  font-size:clamp(28px,3.6vw,40px);
  line-height:1.32;
  letter-spacing:.01em;
  color:var(--ink);
  margin-top:18px;
}
.title-light{color:#F3F1EA}
.title-note{margin-top:16px;max-width:640px;color:var(--ink-2);font-size:15px}
.section-dark .title-note{color:var(--on-navy-2)}

.card-no{font-family:var(--font-mono);font-size:12.5px;font-weight:600;letter-spacing:.1em;color:var(--blue)}
.section-dark .card-no{color:#7FB8E6}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:14px 28px;border-radius:8px;
  font-size:15px;font-weight:600;letter-spacing:.02em;
  border:1.5px solid transparent;
  transition:background-color .2s var(--ease),color .2s var(--ease),
             border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--navy);color:var(--paper)}
.btn-primary:hover{background:#16304B;transform:translateY(-2px);box-shadow:0 10px 24px rgba(12,28,46,.18)}
.btn-outline{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-outline:hover{background:var(--ink);color:var(--paper);transform:translateY(-2px)}
.btn-orange{background:linear-gradient(120deg,#F26A52,var(--orange-2) 55%,var(--orange-3));color:#fff;
  box-shadow:0 10px 26px rgba(234,106,37,.32)}
.btn-orange:hover{transform:translateY(-2px);box-shadow:0 16px 36px rgba(234,106,37,.44)}

/* ---------- brand logo ---------- */
.brand-logo{flex:none;width:38px;height:auto;display:block}
.footer-logo{flex:none;width:38px;height:auto;display:block}

/* 主品牌 + 旗下产品品牌并列 */
.brand-group{display:flex;align-items:center;gap:16px;flex:none}
.brand{display:flex;align-items:center;gap:12px}
.brand-sep{width:1px;height:34px;background:var(--line);flex:none}
.sub-brand{display:flex;align-items:center;gap:9px;padding:5px 12px 5px 10px;border-radius:9px;
  border:1px solid transparent;transition:background-color .18s,border-color .18s}
.sub-brand:hover{background:rgba(234,106,37,.07);border-color:rgba(234,106,37,.25)}
.sub-logo{width:28px;height:28px;border-radius:8px;flex:none;
  box-shadow:0 3px 8px rgba(234,106,37,.28)}
.sub-text{font-size:14.5px;font-weight:700;color:#B1541E;line-height:1.2;white-space:nowrap}
.sub-text small{display:block;font-size:10px;font-weight:400;color:var(--ink-3);
  letter-spacing:.08em;margin-top:1px}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(246,242,233,.86);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .25s,box-shadow .25s,background-color .25s;
}
.site-header.scrolled{border-bottom-color:var(--line);box-shadow:0 6px 24px rgba(23,34,46,.07)}
.header-inner{display:flex;align-items:center;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:12px;flex:none}
.brand-text{font-family:var(--font-serif);font-weight:900;font-size:19px;color:var(--ink);line-height:1.2}
.brand-text small{display:block;font-family:var(--font-mono);font-size:9.5px;font-weight:400;
  letter-spacing:.24em;color:var(--ink-3);margin-top:2px}
.main-nav{display:flex;gap:4px;margin-left:auto}
.main-nav a{padding:8px 12px;border-radius:6px;font-size:14px;font-weight:500;color:var(--ink-2);
  transition:color .18s,background-color .18s}
.main-nav a:hover{color:var(--ink);background:rgba(23,34,46,.06)}
.main-nav a.nav-product{color:var(--seal)}
.main-nav a.nav-product:hover{background:var(--seal-soft);color:var(--seal-deep)}
.header-right{display:flex;align-items:center;gap:14px;flex:none;margin-left:22px}
.header-smart{font-family:var(--font-mono);font-size:12.5px;color:var(--blue);white-space:nowrap}
.header-smart:hover{text-decoration:underline;text-underline-offset:4px}
.menu-toggle{display:none;flex-direction:column;justify-content:center;gap:6px;width:40px;height:40px;
  border:1px solid var(--line);border-radius:8px;background:var(--card)}
.menu-toggle span{display:block;width:18px;height:2px;margin:0 auto;background:var(--ink);border-radius:2px;
  transition:transform .25s,opacity .25s}
.menu-toggle.open span:first-child{transform:translateY(4px) rotate(45deg)}
.menu-toggle.open span:last-child{transform:translateY(-4px) rotate(-45deg)}

/* ---------- hero ---------- */
.hero{position:relative;padding:152px 0 88px;overflow:hidden;background:var(--paper)}
.hero::before{
  content:"信";position:absolute;right:-3%;bottom:-18%;
  font-family:var(--font-serif);font-weight:900;font-size:min(46vw,440px);line-height:1;
  color:rgba(12,28,46,.045);pointer-events:none;user-select:none;z-index:0;
}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.18fr .82fr;
  gap:64px;align-items:center}
.hero-title{font-family:var(--font-serif);font-weight:900;
  font-size:clamp(46px,6.2vw,78px);line-height:1.16;margin-top:26px;letter-spacing:.02em}
.hero-title span{display:block}
.hero-title .accent{color:var(--seal);position:relative;display:inline-block;width:fit-content}
.hero-title .accent::after{content:"";position:absolute;left:0;right:0;bottom:6px;height:10px;z-index:-1;
  background:rgba(194,69,42,.14)}
.hero-lead{margin-top:28px;max-width:560px;color:var(--ink-2);font-size:16.5px;line-height:1.95}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.hero-points li{font-size:13px;font-weight:500;color:var(--ink-2);
  border:1px solid var(--line);border-radius:999px;padding:7px 15px;background:rgba(255,255,255,.55)}
.hero-points li::before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;
  background:var(--seal);margin-right:9px;vertical-align:2px}

/* hero status panel */
.hero-panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:0 24px 60px rgba(23,34,46,.08);overflow:hidden}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:18px 24px;background:var(--navy);color:var(--on-navy);
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.12em}
.status-dot{width:8px;height:8px;border-radius:50%;background:#38D39F;flex:none;
  box-shadow:0 0 0 4px rgba(56,211,159,.18)}
.status-list{padding:8px 24px}
.status-list li{display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:15px 0;border-bottom:1px solid var(--line-soft);font-size:14.5px}
.status-list li:last-child{border-bottom:0}
.status-list b{font-family:var(--font-mono);font-size:10.5px;font-weight:600;letter-spacing:.12em;
  color:var(--blue);border:1px solid rgba(30,95,168,.3);border-radius:4px;padding:3px 8px}
.panel-meta{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  padding:14px 24px;background:var(--paper-2);
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.08em;color:var(--ink-3)}

/* ---------- stats ---------- */
.stats-band{background:var(--navy);border-top:1px solid rgba(160,185,210,.12)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.stat{padding:40px 28px;border-left:1px solid var(--navy-line)}
.stat:last-child{border-right:1px solid var(--navy-line)}
.stat b{display:block;font-family:var(--font-mono);font-size:clamp(36px,3.6vw,50px);font-weight:600;
  line-height:1;color:#fff;letter-spacing:-.01em}
.stat b i{font-style:normal;color:#E8876E}
.stat span{display:block;margin-top:12px;font-size:14px;color:var(--on-navy)}
.stat em{display:block;margin-top:4px;font-family:var(--font-mono);font-style:normal;
  font-size:10px;letter-spacing:.18em;color:#6E8094}

/* ---------- about ---------- */
.split-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:72px;align-items:start}
.section-body p{color:var(--ink-2);font-size:15.5px;line-height:2}
.section-body p+p{margin-top:18px}
.section-body strong{color:var(--ink);font-weight:700}
.facts{display:grid;grid-template-columns:1fr 1fr;gap:0;margin-top:34px;border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;background:var(--card)}
.facts div{padding:20px 24px;border-bottom:1px solid var(--line-soft)}
.facts div:nth-child(odd){border-right:1px solid var(--line-soft)}
.facts div:nth-last-child(-n+2){border-bottom:0}
.facts dt{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.18em;color:var(--ink-3);margin-bottom:6px}
.facts dd{font-size:15px;font-weight:600;color:var(--ink)}

/* ---------- values ---------- */
.values-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:48px}
.value-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:32px 28px 36px;transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s}
.value-card:hover{transform:translateY(-5px);box-shadow:0 20px 44px rgba(23,34,46,.09);border-color:var(--line)}
.value-stamp{display:grid;place-items:center;width:46px;height:46px;border-radius:10px;
  background:var(--seal-soft);color:var(--seal);
  font-family:var(--font-serif);font-weight:900;font-size:22px;margin-bottom:20px;
  border:1px solid rgba(194,69,42,.22)}
.value-card h3{font-family:var(--font-serif);font-size:24px;font-weight:900;color:var(--ink);margin-bottom:12px}
.value-card p{font-size:14px;line-height:1.85;color:var(--ink-2)}

/* ---------- services ---------- */
.services-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:48px}
.service-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:34px 34px 30px;display:flex;flex-direction:column;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s}
.service-card:hover{transform:translateY(-5px);box-shadow:0 20px 44px rgba(23,34,46,.09);border-color:var(--line)}
.service-card header{display:flex;align-items:center;gap:14px;margin-bottom:20px}
.card-rule{flex:1;height:1px;background:repeating-linear-gradient(90deg,var(--line) 0 6px,transparent 6px 12px)}
.service-card h3{font-family:var(--font-serif);font-size:22px;font-weight:900;color:var(--ink);margin-bottom:11px}
.service-card p{font-size:14.5px;line-height:1.9;color:var(--ink-2)}
.tag-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:20px}
.tag-list li{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.03em;color:var(--ink-2);
  border:1px solid var(--line);border-radius:999px;padding:5px 12px;background:var(--paper)}

/* ---------- tech ---------- */
.tech-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-top:48px}
.tech-card{border:1px solid var(--navy-line);border-radius:var(--radius-lg);padding:32px;
  background:linear-gradient(160deg,rgba(255,255,255,.045),rgba(255,255,255,.015));
  transition:border-color .25s,background-color .25s,transform .25s var(--ease)}
.tech-card:hover{border-color:rgba(143,195,236,.45);transform:translateY(-3px);
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.025))}
.tech-card h3{font-family:var(--font-serif);font-size:21px;font-weight:900;color:#fff;margin:14px 0 10px}
.tech-card p{font-size:14px;line-height:1.9;color:var(--on-navy-2)}
.tech-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.tech-chips span{font-family:var(--font-mono);font-size:12px;color:var(--on-navy-2);
  border:1px solid var(--navy-line);border-radius:999px;padding:8px 15px}

/* ---------- process ---------- */
.process-list{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:52px;
  counter-reset:step}
.process-list li{border-top:2px solid var(--navy);padding-top:24px}
.process-no{font-family:var(--font-mono);font-size:13px;font-weight:600;color:var(--seal);letter-spacing:.1em}
.process-list h3{font-family:var(--font-serif);font-size:20px;font-weight:900;color:var(--ink);margin:12px 0 10px}
.process-list p{font-size:13.8px;line-height:1.85;color:var(--ink-2)}

/* ---------- cases ---------- */
.cases-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:48px}
.case-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;
  display:flex;flex-direction:column;transition:transform .25s var(--ease),box-shadow .25s var(--ease)}
.case-card:hover{transform:translateY(-5px);box-shadow:0 20px 44px rgba(23,34,46,.09)}
.case-card header{padding:26px 28px 22px;border-bottom:1px solid var(--line)}
.case-card header h3{font-family:var(--font-serif);font-size:19px;font-weight:900;color:var(--ink);margin-top:8px}
.case-item{padding:22px 28px;border-bottom:1px solid var(--line-soft)}
.case-item:last-child{border-bottom:0}
.case-item h4{font-size:15px;font-weight:700;color:var(--ink);margin-bottom:7px;
  display:flex;gap:9px;align-items:baseline}
.case-item h4::before{content:"";width:7px;height:7px;border-radius:2px;background:var(--seal);flex:none;transform:rotate(45deg)}
.case-item p{font-size:13.6px;line-height:1.8;color:var(--ink-2)}
.case-item.muted{background:var(--paper)}
.case-item.muted h4::before{background:var(--ink-3)}

/* ---------- product ---------- */
.product-section{overflow:hidden}
.product-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:64px;align-items:center}
.product-name{display:flex;align-items:center;gap:14px;margin-top:20px}
.product-name img{width:48px;height:48px;border-radius:13px;box-shadow:0 8px 20px rgba(234,106,37,.35)}
.product-name h2{font-family:var(--font-serif);font-size:clamp(30px,3.4vw,40px);font-weight:900;color:#F3F1EA}
.product-sub{font-size:17px;font-weight:700;color:#F4A06B;margin-top:14px}
.product-desc{margin-top:14px;font-size:15px;line-height:1.95;color:var(--on-navy-2);max-width:560px}
.product-features{display:grid;gap:11px;margin-top:24px;max-width:560px}
.product-features li{position:relative;padding-left:28px;font-size:14px;line-height:1.7;color:var(--on-navy)}
.product-features li::before{content:"";position:absolute;left:2px;top:8px;width:13px;height:13px;border-radius:4px;
  border:1.5px solid var(--orange-2);background:rgba(234,106,37,.12)}
.product-features li::after{content:"";position:absolute;left:6px;top:10px;width:5px;height:8px;
  border:solid #F4A06B;border-width:0 1.8px 1.8px 0;transform:rotate(45deg)}
.product-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap;margin-top:32px}
.product-note{font-size:13px;color:#7E90A2}

.product-visual{display:flex;align-items:flex-end;justify-content:center;gap:22px;
  padding:36px;border-radius:var(--radius-lg);
  background:
    radial-gradient(120% 90% at 80% 0%,rgba(234,106,37,.16),transparent 60%),
    linear-gradient(180deg,#10243A,#0C1C2E);
  border:1px solid var(--navy-line);min-height:480px}
.phone-frame{width:42%;max-width:196px;margin:0;background:#0A1622;
  border:1px solid rgba(160,185,210,.25);border-radius:22px;padding:7px;
  box-shadow:0 26px 50px rgba(0,0,0,.4)}
.phone-frame.phone-small{width:36%;max-width:168px;transform:translateY(26px)}
.phone-frame img{width:100%;border-radius:16px}
.phone-frame figcaption{font-size:11px;text-align:center;color:var(--on-navy-2);
  padding:8px 4px 4px;font-weight:600;letter-spacing:.05em}

/* ---------- contact ---------- */
.contact-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:64px;align-items:start}
.contact-list{border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;background:var(--card)}
.contact-list li{padding:24px 28px;border-bottom:1px solid var(--line-soft)}
.contact-list li:last-child{border-bottom:0}
.contact-label{display:block;font-family:var(--font-mono);font-size:10.5px;letter-spacing:.18em;
  color:var(--ink-3);margin-bottom:7px}
.contact-value{display:block;font-size:16px;font-weight:600;color:var(--ink)}
.contact-value.link{color:var(--blue)}
.contact-value.link:hover{text-decoration:underline;text-underline-offset:4px}
.contact-qr img{display:block;width:100%;height:auto;margin-top:12px;
  border-radius:12px;border:1px solid var(--line);background:#fff}
.qr-hint{display:block;margin-top:10px;font-size:12.5px;color:var(--ink-3)}

/* ---------- footer ---------- */
.site-footer{background:var(--navy);color:var(--on-navy-2);padding:44px 0 28px}
.footer-top{display:flex;align-items:center;justify-content:space-between;gap:28px;
  padding-bottom:28px;border-bottom:1px solid var(--navy-line)}
.footer-brand{display:flex;align-items:center;gap:13px}
.footer-brand b{display:block;color:#F3F1EA;font-size:15px;font-family:var(--font-serif);font-weight:700}
.footer-brand small{display:block;font-size:12px;color:#6E8094;margin-top:3px;letter-spacing:.1em}
.footer-nav{display:flex;flex-wrap:wrap;gap:4px}
.footer-nav a{font-size:13.5px;padding:7px 12px;border-radius:6px;transition:color .18s,background-color .18s}
.footer-nav a:hover{color:#fff;background:rgba(160,185,210,.1)}
.footer-bottom{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;padding-top:22px;
  font-family:var(--font-mono);font-size:11.5px;color:#6E8094;letter-spacing:.04em}
.icp{color:#8CA0B4;transition:color .18s}
.icp:hover{color:#F3F1EA}

/* ---------- reveal (JS gated; never hides without JS) ---------- */
html.js [data-reveal]{opacity:0;transform:translateY(22px);
  transition:opacity .7s var(--ease),transform .7s var(--ease);transition-delay:var(--rd,0s)}
html.js [data-reveal].in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1100px){
  .main-nav,.header-smart{display:none}
  .menu-toggle{display:flex}
  .brand-group{margin-right:auto}
  .main-nav.open{display:flex;position:absolute;top:72px;left:0;right:0;flex-direction:column;gap:2px;
    background:var(--paper);border-bottom:1px solid var(--line);padding:12px 24px 18px;
    box-shadow:0 18px 40px rgba(23,34,46,.1)}
  .main-nav.open a{padding:13px 12px;font-size:15px;border-radius:8px}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero-panel{max-width:520px}
  .split-grid{grid-template-columns:1fr;gap:36px}
  .values-grid{grid-template-columns:repeat(2,1fr)}
  .services-grid,.tech-grid{grid-template-columns:1fr}
  .process-list{grid-template-columns:repeat(2,1fr);gap:32px 24px}
  .cases-grid{grid-template-columns:1fr}
  .product-grid{grid-template-columns:1fr;gap:48px}
  .product-visual{max-width:520px;width:100%}
  .contact-grid{grid-template-columns:1fr;gap:40px}
  .footer-top{flex-direction:column;align-items:flex-start;gap:22px}
}

@media (max-width:640px){
  .container{padding:0 20px}
  .section{padding:72px 0}
  .brand-group{gap:10px}
  .brand{gap:9px}
  .brand-logo{width:32px}
  .brand-text{font-size:16px}
  .brand-text small{display:none}
  .brand-sep{height:28px}
  .sub-brand{gap:7px;padding:4px 8px}
  .sub-logo{width:24px;height:24px}
  .sub-text{font-size:13px}
  .sub-text small{display:none}
  .hero{padding:128px 0 64px}
  .hero-actions .btn{width:100%}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .stat{padding:30px 20px}
  .stat:nth-child(odd){border-left:0}
  .stat:nth-child(n+3){border-top:1px solid var(--navy-line)}
  .values-grid{grid-template-columns:1fr}
  .facts{grid-template-columns:1fr}
  .facts div:nth-child(odd){border-right:0}
  .facts div:nth-last-child(-n+2){border-bottom:1px solid var(--line-soft)}
  .facts div:last-child{border-bottom:0}
  .process-list{grid-template-columns:1fr;gap:28px}
  .service-card{padding:28px 24px}
  .product-visual{min-height:0;padding:24px;gap:14px}
  .phone-frame{max-width:150px}
  .phone-frame.phone-small{max-width:124px;transform:translateY(18px)}
  .product-actions .btn{width:100%}
  .footer-bottom{flex-direction:column;gap:8px}
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html.js [data-reveal]{opacity:1;transform:none}
}