/* 帧跃AI · 全国AI短视频站群样式 */
:root{
  --ink:#0c1120; --ink2:#182136; --body:#3d475c; --muted:#6b7689;
  --line:#e5e9f2; --bg:#fff; --soft:#f5f7fb; --soft2:#eef2f9;
  --brand:#2b6bff; --brand-d:#1f55d6; --violet:#6a4bff; --cyan:#26c6da;
  --cta:#ff6a2b; --cta-d:#e85a1d; --gold:#c99a4e;
  --r:14px; --r-lg:22px;
  --shadow:0 4px 24px rgba(13,20,38,.07);
  --shadow-lg:0 18px 50px rgba(13,20,38,.12);
  --maxw:1200px;
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font:16px/1.75 var(--font);color:var(--body);background:var(--bg);
  -webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{color:var(--ink);margin:0 0 .5em;line-height:1.32;font-weight:700;letter-spacing:-.01em}
h1{font-size:2.35rem}
h2{font-size:1.85rem}
h3{font-size:1.18rem}
p{margin:0 0 1em}
ul{margin:0;padding:0;list-style:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.sec{padding:76px 0}
.sec.soft{background:var(--soft)}
.sec.dark{background:linear-gradient(160deg,#0b1020,#151d33 60%,#0d1428);color:#c7cede}
.sec.dark h2,.sec.dark h3{color:#fff}
.eyebrow{display:block;font:600 .78rem/1 var(--font);letter-spacing:.22em;text-transform:uppercase;
  color:var(--brand);margin-bottom:14px}
.sec.dark .eyebrow{color:#7fa5ff}
.hd{max-width:760px;margin:0 auto 46px;text-align:center}
.hd p{color:var(--muted);font-size:1.02rem;margin:14px 0 0}
.sec.dark .hd p{color:#93a0ba}
.hd.left{margin-left:0;text-align:left}

/* ---------- 顶部 ---------- */
.topbar{background:var(--ink);color:#9aa7c0;font-size:.82rem}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;height:38px;gap:16px}
.topbar b{color:#fff;font-weight:600}
.topbar .tb-r{display:flex;gap:18px;align-items:center}
.topbar .dot{width:6px;height:6px;border-radius:50%;background:#3ddc84;display:inline-block;margin-right:6px;
  box-shadow:0 0 0 3px rgba(61,220,132,.18)}
header.site{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line)}
header.site .wrap{display:flex;align-items:center;height:70px;gap:28px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.22rem;color:var(--ink);letter-spacing:-.02em}
.logo i{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;color:#fff;font-style:normal;
  font-size:.95rem;font-weight:800;background:linear-gradient(135deg,var(--brand),var(--violet))}
.logo span{font-size:.62rem;font-weight:600;color:var(--muted);letter-spacing:.18em;display:block;margin-top:-2px}
nav.main{margin-left:auto}
nav.main ul{display:flex;gap:4px;align-items:center}
nav.main a{display:block;padding:9px 13px;border-radius:9px;font-size:.94rem;font-weight:500;color:var(--ink2)}
nav.main a:hover,nav.main a.on{background:var(--soft2);color:var(--brand)}
.nav-cta{background:linear-gradient(135deg,var(--cta),#ff8a4d)!important;color:#fff!important;
  padding:10px 20px!important;border-radius:999px!important;font-weight:600!important;box-shadow:0 6px 18px rgba(255,106,43,.28)}
.burger{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:#fff;
  margin-left:auto;position:relative}
.burger i{position:absolute;left:11px;width:20px;height:2px;background:var(--ink);border-radius:2px;transition:.25s}
.burger i:nth-child(1){top:14px}.burger i:nth-child(2){top:20px}.burger i:nth-child(3){top:26px}
body.navopen .burger i:nth-child(1){transform:translateY(6px) rotate(45deg)}
body.navopen .burger i:nth-child(2){opacity:0}
body.navopen .burger i:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 28px;border-radius:999px;
  font-weight:600;font-size:.98rem;transition:.22s;border:1px solid transparent;cursor:pointer}
.btn-primary{background:linear-gradient(135deg,var(--cta),#ff8f52);color:#fff;box-shadow:0 10px 26px rgba(255,106,43,.30)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 32px rgba(255,106,43,.38)}
.btn-ghost{border-color:rgba(255,255,255,.28);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.1)}
.btn-line{border-color:var(--line);color:var(--ink);background:#fff}
.btn-line:hover{border-color:var(--brand);color:var(--brand)}
.btn-sm{padding:10px 20px;font-size:.9rem}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:#080d1a;color:#dfe6f5;padding:86px 0 96px}
.hero:before{content:"";position:absolute;inset:0;
  background:radial-gradient(900px 420px at 78% 12%,rgba(43,107,255,.42),transparent 62%),
             radial-gradient(700px 380px at 12% 88%,rgba(106,75,255,.32),transparent 60%),
             radial-gradient(500px 300px at 50% 0%,rgba(38,198,218,.16),transparent 70%)}
.hero:after{content:"";position:absolute;inset:0;opacity:.35;
  background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:64px 64px;mask-image:radial-gradient(circle at 50% 30%,#000 30%,transparent 78%)}
.hero .wrap{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.hero h1{color:#fff;font-size:3rem;line-height:1.2;margin-bottom:20px;letter-spacing:-.02em}
.hero h1 em{font-style:normal;background:linear-gradient(100deg,#6fa8ff,#a58bff 55%,#4be0ea);
  -webkit-background-clip:text;background-clip:text;color:transparent}
.hero .lead{font-size:1.1rem;color:#a8b4cc;max-width:34em;margin-bottom:30px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin:0 0 32px}
.hero-tags span{font-size:.85rem;color:#b9c5dc;border:1px solid rgba(255,255,255,.18);
  border-radius:999px;padding:6px 14px;background:rgba(255,255,255,.04)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.hero-note{font-size:.86rem;color:#7c8aa5;margin-top:18px}
.hero-card{background:rgba(255,255,255,.055);border:1px solid rgba(255,255,255,.13);border-radius:var(--r-lg);
  padding:26px;backdrop-filter:blur(6px);box-shadow:0 30px 70px rgba(0,0,0,.38)}
.hero-card h3{color:#fff;font-size:1rem;margin-bottom:16px;display:flex;justify-content:space-between;align-items:center}
.hero-card h3 span{font-size:.72rem;color:#8fe3a8;border:1px solid rgba(143,227,168,.35);border-radius:999px;padding:2px 9px}
.spec{display:flex;justify-content:space-between;gap:12px;padding:11px 0;border-bottom:1px dashed rgba(255,255,255,.12);font-size:.92rem}
.spec:last-of-type{border-bottom:0}
.spec b{color:#fff;font-weight:600}
.spec i{color:#8b99b3;font-style:normal}
.hero-card .mini-cta{margin-top:18px;display:block;text-align:center;background:rgba(43,107,255,.9);
  color:#fff;padding:12px;border-radius:12px;font-weight:600;font-size:.95rem}
.hero-card .mini-cta:hover{background:#3c78ff}

/* 数据条 */
.stats{border-top:1px solid rgba(255,255,255,.08);background:rgba(4,8,18,.55)}
.stats .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;padding:26px 20px}
.stat{text-align:center;border-right:1px solid rgba(255,255,255,.09)}
.stat:last-child{border-right:0}
.stat b{display:block;font-size:1.75rem;color:#fff;font-weight:700;letter-spacing:-.02em}
.stat b i{font-style:normal;font-size:1rem;color:#7fa5ff;margin-left:2px}
.stat span{font-size:.83rem;color:#8b99b3}

/* ---------- 服务卡 ---------- */
.grid{display:grid;gap:22px}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.svc{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:28px;
  transition:.26s;position:relative;overflow:hidden}
.svc:before{content:"";position:absolute;left:0;top:0;height:3px;width:0;
  background:linear-gradient(90deg,var(--brand),var(--violet));transition:.35s}
.svc:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:#d7e0f5}
.svc:hover:before{width:100%}
.svc .ico{width:46px;height:46px;border-radius:13px;display:grid;place-items:center;font-size:1.25rem;
  background:linear-gradient(135deg,#eaf0ff,#f0ebff);color:var(--brand);margin-bottom:16px}
.svc h3{margin-bottom:8px;font-size:1.12rem}
.svc p{color:var(--muted);font-size:.94rem;margin-bottom:14px}
.svc .tags{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:16px}
.svc .tags span{font-size:.76rem;color:#5b6b8c;background:var(--soft);border-radius:6px;padding:3px 9px}
.svc .more{font-size:.88rem;color:var(--brand);font-weight:600}
.svc .more:after{content:" →";transition:.2s}
.svc:hover .more:after{margin-left:4px}

/* ---------- 特色 ---------- */
.feat{display:flex;gap:16px}
.feat .no{flex:0 0 44px;height:44px;border-radius:12px;display:grid;place-items:center;
  font-weight:700;font-size:.95rem;color:var(--brand);background:#eef3ff}
.sec.dark .feat .no{background:rgba(43,107,255,.16);color:#8fb2ff}
.feat h3{font-size:1.05rem;margin-bottom:6px}
.feat p{font-size:.92rem;margin:0;color:var(--muted)}
.sec.dark .feat p{color:#93a0ba}

/* ---------- 流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;counter-reset:s}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px 18px;position:relative}
.step b{display:inline-grid;place-items:center;width:30px;height:30px;border-radius:50%;
  background:var(--ink);color:#fff;font-size:.85rem;margin-bottom:12px}
.step h4{font-size:.98rem;margin-bottom:6px;color:var(--ink)}
.step p{font-size:.86rem;color:var(--muted);margin:0}
.step:after{content:"";position:absolute;right:-9px;top:calc(50% - 5px);width:9px;height:9px;
  border-top:2px solid var(--line);border-right:2px solid var(--line);transform:rotate(45deg)}
.step:last-child:after{display:none}

/* ---------- 案例 ---------- */
.cases{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.case{border-radius:var(--r-lg);overflow:hidden;background:#fff;border:1px solid var(--line);
  box-shadow:var(--shadow);transition:.26s;display:flex;flex-direction:column}
.case:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.case .thumb{height:172px;position:relative;display:flex;align-items:flex-end;padding:16px;overflow:hidden}
.case .thumb:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 25%,rgba(6,10,20,.72))}
.case .thumb span{position:relative;z-index:2;color:#fff;font-weight:600;font-size:.95rem;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);padding:4px 11px;border-radius:99px;
  backdrop-filter:blur(4px)}
.case .th1{background:linear-gradient(135deg,#2b6bff,#26c6da)}
.case .th2{background:linear-gradient(135deg,#6a4bff,#c04bff)}
.case .th3{background:linear-gradient(135deg,#ff6a2b,#ffb03a)}
.case .th4{background:linear-gradient(135deg,#0f9d8f,#26c6da)}
.case .th5{background:linear-gradient(135deg,#243b7a,#2b6bff)}
.case .th6{background:linear-gradient(135deg,#a3437b,#ff6a9c)}
.case .body{padding:20px;flex:1;display:flex;flex-direction:column}
.case h3{font-size:1.02rem;margin-bottom:8px}
.case p{font-size:.9rem;color:var(--muted);margin-bottom:12px;flex:1}
.case .kpi{display:flex;gap:14px;border-top:1px dashed var(--line);padding-top:12px;font-size:.82rem;color:var(--muted)}
.case .kpi b{color:var(--brand);font-size:.95rem}

/* ---------- 价格 ---------- */
.prices{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:stretch}
.price{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:30px 26px;display:flex;flex-direction:column}
.price.hot{border-color:#ffc9b0;box-shadow:0 16px 44px rgba(255,106,43,.14);position:relative}
.price.hot:before{content:"热销";position:absolute;top:-12px;left:50%;transform:translateX(-50%);
  background:linear-gradient(135deg,var(--cta),#ff9a5f);color:#fff;font-size:.76rem;padding:4px 14px;border-radius:99px}
.price h3{font-size:1.05rem;color:var(--muted);font-weight:600;margin-bottom:10px}
.price .amt{font-size:2.1rem;font-weight:700;color:var(--ink);letter-spacing:-.02em;line-height:1}
.price .amt small{font-size:.9rem;color:var(--muted);font-weight:400;margin-left:4px}
.price ul{margin:20px 0 24px;display:grid;gap:10px}
.price li{font-size:.9rem;color:var(--body);padding-left:22px;position:relative}
.price li:before{content:"✓";position:absolute;left:0;color:var(--brand);font-weight:700}
.price .btn{margin-top:auto;justify-content:center}

/* ---------- 城市 ---------- */
.citybar{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:26px}
.citybar a{font-size:.88rem;padding:7px 14px;border-radius:99px;background:#fff;border:1px solid var(--line);color:var(--ink2)}
.citybar a:hover,.citybar a.on{background:var(--brand);border-color:var(--brand);color:#fff}
.prov-block{margin-bottom:22px}
.prov-block h3{font-size:1rem;margin-bottom:12px;padding-left:12px;border-left:3px solid var(--brand)}
.city-list{display:flex;flex-wrap:wrap;gap:9px}
.city-list a{font-size:.88rem;color:var(--body);padding:6px 12px;border-radius:8px;background:var(--soft)}
.city-list a:hover{background:#e4ecff;color:var(--brand)}

/* ---------- 资讯 ---------- */
.posts{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.post{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:24px;transition:.24s;display:flex;flex-direction:column}
.post:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#d7e0f5}
.post .date{font-size:.8rem;color:var(--muted);margin-bottom:10px;display:flex;gap:10px;align-items:center}
.post .date i{font-style:normal;background:var(--soft);color:var(--brand);border-radius:6px;padding:2px 8px;font-size:.74rem}
.post h3{font-size:1.05rem;line-height:1.5;margin-bottom:10px}
.post p{font-size:.9rem;color:var(--muted);flex:1;margin-bottom:0}

/* ---------- FAQ ---------- */
.faq{max-width:860px;margin:0 auto}
details.qa{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:0 22px;margin-bottom:12px}
details.qa[open]{border-color:#cddcff;box-shadow:var(--shadow)}
details.qa summary{list-style:none;cursor:pointer;padding:18px 0;font-weight:600;color:var(--ink);
  font-size:1rem;display:flex;justify-content:space-between;gap:16px;align-items:center}
details.qa summary::-webkit-details-marker{display:none}
details.qa summary:after{content:"+";color:var(--brand);font-size:1.3rem;font-weight:400;line-height:1}
details.qa[open] summary:after{content:"–"}
details.qa .a{padding:0 0 20px;color:var(--body);font-size:.95rem;border-top:1px dashed var(--line);padding-top:16px}

/* ---------- 表单/CTA ---------- */
.cta-band{background:linear-gradient(120deg,#0c1120,#1b2a5c 55%,#2b4fa8);color:#fff;border-radius:var(--r-lg);
  padding:48px;display:grid;grid-template-columns:1fr 420px;gap:44px;align-items:center;position:relative;overflow:hidden}
.cta-band:before{content:"";position:absolute;right:-60px;top:-60px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(43,107,255,.55),transparent 70%)}
.cta-band h2{color:#fff;margin-bottom:12px}
.cta-band p{color:#b7c3dc;margin:0 0 8px}
.cta-band .kv{display:flex;flex-wrap:wrap;gap:22px;margin-top:18px;font-size:.9rem;color:#c9d4ea}
.form{background:#fff;border-radius:16px;padding:24px;box-shadow:0 20px 50px rgba(0,0,0,.22);position:relative;z-index:2}
.form h3{font-size:1.05rem;margin-bottom:4px}
.form .sub{font-size:.82rem;color:var(--muted);margin-bottom:16px}
.form .row{display:grid;gap:12px}
.form input,.form select,.form textarea{width:100%;border:1px solid var(--line);border-radius:10px;
  padding:12px 14px;font:inherit;font-size:.94rem;color:var(--ink);background:#fbfcfe;transition:.2s}
.form input:focus,.form select:focus,.form textarea:focus{outline:0;border-color:var(--brand);background:#fff;
  box-shadow:0 0 0 3px rgba(43,107,255,.12)}
.form textarea{resize:vertical;min-height:74px}
.form .btn{width:100%;justify-content:center;margin-top:4px}
.form .tip{font-size:.76rem;color:var(--muted);text-align:center;margin:10px 0 0}
.form .ok{display:none;background:#eafaf0;color:#12875a;border:1px solid #b7ebcd;border-radius:10px;
  padding:12px;font-size:.9rem;text-align:center}
.form .err{display:none;background:#fff0f0;color:#c62828;border:1px solid #ffd0d0;border-radius:10px;
  padding:10px;font-size:.86rem;text-align:center;margin-top:8px}

/* ---------- 页面头 ---------- */
.pagehead{background:linear-gradient(150deg,#0c1120,#16224a 60%,#1d2f66);color:#cfd8ea;padding:52px 0 56px;position:relative;overflow:hidden}
.pagehead:before{content:"";position:absolute;inset:0;
  background:radial-gradient(700px 320px at 82% 0%,rgba(43,107,255,.35),transparent 65%)}
.pagehead .wrap{position:relative;z-index:2}
.pagehead h1{color:#fff;font-size:2.1rem;margin-bottom:12px}
.pagehead p{color:#a9b6cf;max-width:62em;margin:0}
.crumb{font-size:.83rem;color:#8f9db8;margin-bottom:16px;display:flex;gap:8px;flex-wrap:wrap}
.crumb a{color:#b7c4dd}
.crumb a:hover{color:#fff}
.crumb span{opacity:.5}

/* ---------- 正文排版 ---------- */
.article{max-width:820px;margin:0 auto}
.article h2{font-size:1.4rem;margin:38px 0 14px;padding-left:14px;border-left:4px solid var(--brand)}
.article h3{font-size:1.12rem;margin:26px 0 10px}
.article p{font-size:1.02rem;line-height:1.95;color:var(--body)}
.article ul{margin:0 0 18px;display:grid;gap:9px}
.article li{position:relative;padding-left:20px;color:var(--body)}
.article li:before{content:"";position:absolute;left:2px;top:.68em;width:6px;height:6px;border-radius:2px;background:var(--brand)}
.article blockquote{margin:22px 0;padding:18px 22px;background:var(--soft);border-left:3px solid var(--brand);
  border-radius:0 12px 12px 0;color:var(--ink2);font-size:.98rem}
.article table{width:100%;border-collapse:collapse;margin:18px 0;font-size:.94rem}
.article th,.article td{border:1px solid var(--line);padding:11px 14px;text-align:left}
.article th{background:var(--soft);font-weight:600;color:var(--ink)}
.note{background:#fff9ec;border:1px solid #f3e0b5;border-radius:12px;padding:16px 18px;font-size:.92rem;color:#7a5b18;margin:22px 0}

/* ---------- 页脚 ---------- */
footer.site{background:#080d1a;color:#8593ad;padding:56px 0 0;font-size:.9rem}
footer.site h4{color:#fff;font-size:.95rem;margin-bottom:16px}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:38px;border-bottom:1px solid rgba(255,255,255,.08)}
.foot-brand .logo{color:#fff;margin-bottom:14px}
.foot-brand p{color:#8593ad;font-size:.88rem;line-height:1.8;max-width:30em}
footer.site li{margin-bottom:9px}
footer.site a:hover{color:#fff}
.foot-cities{border-bottom:1px solid rgba(255,255,255,.08);padding:26px 0}
.foot-cities p{font-size:.82rem;color:#6d7a92;margin-bottom:12px}
.foot-cities .links{display:flex;flex-wrap:wrap;gap:6px 14px;font-size:.82rem;max-height:96px;overflow:hidden}
.copy{padding:22px 0 30px;font-size:.8rem;color:#5d6a82;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}

/* 悬浮联系 */
.float{position:fixed;right:18px;bottom:22px;z-index:80;display:grid;gap:10px}
.float a{width:52px;height:52px;border-radius:50%;display:grid;place-items:center;color:#fff;font-size:.72rem;
  font-weight:600;text-align:center;line-height:1.2;box-shadow:0 10px 26px rgba(0,0,0,.22);transition:.2s}
.float a:hover{transform:translateY(-3px)}
.float .f1{background:linear-gradient(135deg,#2b6bff,#4f8bff)}
.float .f2{background:linear-gradient(135deg,#ff6a2b,#ff9a5f)}
.float .f3{background:linear-gradient(135deg,#0f9d8f,#26c6da)}

/* 动效（仅在 JS 可用时启用，避免无 JS 环境内容不可见） */
body.js .reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}
body.js .reveal.in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media(max-width:1080px){
  .hero .wrap{grid-template-columns:1fr;gap:40px}
  .hero h1{font-size:2.5rem}
  .g4{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(3,1fr)}
  .step:nth-child(3):after{display:none}
  .cta-band{grid-template-columns:1fr;padding:36px}
}
@media(max-width:900px){
  nav.main{position:fixed;inset:70px 0 auto 0;background:#fff;border-bottom:1px solid var(--line);
    padding:14px 20px 22px;display:none;box-shadow:0 20px 40px rgba(0,0,0,.08);max-height:calc(100vh - 70px);overflow:auto}
  body.navopen nav.main{display:block}
  nav.main ul{flex-direction:column;gap:2px;align-items:stretch}
  nav.main a{padding:12px 14px;border-radius:10px;font-size:1rem}
  .burger{display:block}
  .g3,.prices,.posts,.cases{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
  .sec{padding:56px 0}
  h1{font-size:2rem}
  .hero h1{font-size:2.15rem}
  .pagehead h1{font-size:1.7rem}
}
@media(max-width:640px){
  .topbar .tb-r{display:none}
  .g2,.g3,.g4,.prices,.posts,.cases,.steps{grid-template-columns:1fr}
  .step:after{display:none}
  .stats .wrap{grid-template-columns:repeat(2,1fr);gap:16px}
  .stat:nth-child(2){border-right:0}
  .hero{padding:56px 0 64px}
  .hero h1{font-size:1.85rem}
  .hero .lead{font-size:1rem}
  .foot-grid{grid-template-columns:1fr}
  .cta-band{padding:26px;border-radius:18px}
  .form{padding:20px}
  .float{right:12px;bottom:14px}
  .float a{width:46px;height:46px;font-size:.68rem}
  .article p{font-size:.98rem}
  h2{font-size:1.45rem}
}