@charset "UTF-8";
/* ============================================================
   南通云畅传媒 官网 · 设计系统
   纯静态 / 零依赖 / 移动优先 / 关键 CSS 内联于头部
   ============================================================ */

:root{
  --brand:#1657e8;
  --brand-2:#0e3fa8;
  --brand-3:#3b82f6;
  --cyan:#00b8ff;
  --ink:#0d1526;
  --ink-2:#243049;
  --muted:#5a6781;
  --muted-2:#8792a8;
  --line:#e4e9f2;
  --line-2:#eef2f8;
  --bg:#ffffff;
  --bg-soft:#f6f8fc;
  --bg-dark:#0a1020;
  --radius:14px;
  --radius-lg:20px;
  --shadow:0 1px 2px rgba(13,21,38,.04),0 8px 24px rgba(13,21,38,.06);
  --shadow-md:0 2px 6px rgba(13,21,38,.06),0 18px 48px rgba(13,21,38,.10);
  --shadow-brand:0 12px 32px rgba(22,87,232,.22);
  --maxw:1200px;
  --nav-h:68px;
  --font:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC","Noto Sans CJK SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + 16px)}
body{
  margin:0;font-family:var(--font);color:var(--ink);
  background:var(--bg);line-height:1.75;font-size:16px;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img,svg{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--brand-2)}
h1,h2,h3,h4,h5{margin:0 0 .6em;line-height:1.3;font-weight:800;letter-spacing:-.01em;color:var(--ink)}
h1{font-size:clamp(28px,4.4vw,46px);line-height:1.22}
h2{font-size:clamp(23px,3vw,34px);line-height:1.3}
h3{font-size:clamp(18px,2vw,22px)}
h4{font-size:17px}
p{margin:0 0 1em}
ul,ol{margin:0 0 1em;padding-left:1.35em}
li{margin:.32em 0}
strong{font-weight:700;color:var(--ink)}
hr{border:0;border-top:1px solid var(--line);margin:34px 0}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:4px}

.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 22px}
.wrap-narrow{max-width:820px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:#fff;padding:10px 18px;z-index:999;border-radius:0 0 8px 0}
.skip-link:focus{left:0}

/* ---------------- 顶部导航 ---------------- */
.nav{
  position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(12px);-webkit-backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
}
.nav-in{display:flex;align-items:center;gap:16px;height:var(--nav-h);max-width:var(--maxw);margin:0 auto;padding:0 22px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand img{height:32px;width:auto}
.brand-txt{display:flex;flex-direction:column;line-height:1.1}
.brand-txt b{font-size:16px;font-weight:800;letter-spacing:.01em}
.brand-txt span{font-size:11px;color:var(--muted-2);letter-spacing:.14em;text-transform:uppercase}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-links a{
  padding:9px 13px;border-radius:9px;font-size:15px;font-weight:500;color:var(--ink-2);white-space:nowrap;
}
.nav-links a:hover{background:var(--bg-soft);color:var(--brand)}
.nav-links a.active{color:var(--brand);background:rgba(22,87,232,.08);font-weight:600}
.nav-cta{
  margin-left:10px;padding:9px 18px!important;border-radius:999px!important;background:var(--brand);color:#fff!important;font-weight:600!important;
  box-shadow:var(--shadow-brand);
}
.nav-cta:hover{background:var(--brand-2)!important;color:#fff!important;transform:translateY(-1px)}
/* 下拉菜单 */
.nav-dd{position:relative}
.nav-dd>a{display:inline-flex;align-items:center;padding:9px 13px;border-radius:9px;font-size:15px;font-weight:500;color:var(--ink-2);white-space:nowrap}
.nav-dd>a:hover,.nav-dd:hover>a{background:var(--bg-soft);color:var(--brand)}
.nav-dd>a.active{color:var(--brand);background:rgba(22,87,232,.08);font-weight:600}
.nav-dd-menu{
  position:absolute;top:calc(100% + 8px);left:50%;transform:translateX(-50%) translateY(6px);
  min-width:168px;background:#fff;border:1px solid var(--line);border-radius:14px;
  box-shadow:var(--shadow-md);padding:8px;opacity:0;visibility:hidden;transition:.2s ease;z-index:60;
}
.nav-dd:hover .nav-dd-menu,.nav-dd:focus-within .nav-dd-menu{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.nav-dd-menu a{display:block;padding:9px 13px;border-radius:9px;font-size:14.5px;color:var(--ink-2);white-space:nowrap}
.nav-dd-menu a:hover{background:var(--bg-soft);color:var(--brand)}
.nav-toggle{display:none;margin-left:auto;width:42px;height:42px;border:1px solid var(--line);background:#fff;border-radius:10px;cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:5px}
.nav-toggle i{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:.25s}
.nav-toggle.on i:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.on i:nth-child(2){opacity:0}
.nav-toggle.on i:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------------- 按钮 ---------------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 28px;border-radius:999px;font-size:15px;font-weight:600;
  background:var(--brand);color:#fff;border:1px solid var(--brand);cursor:pointer;
  box-shadow:var(--shadow-brand);transition:.2s ease;
}
.btn:hover{background:var(--brand-2);border-color:var(--brand-2);color:#fff;transform:translateY(-2px)}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--line);box-shadow:var(--shadow)}
.btn-ghost:hover{background:var(--bg-soft);color:var(--brand-2);border-color:#cfdcf5}
.btn-lg{padding:16px 36px;font-size:16px}

/* ---------------- 面包屑 ---------------- */
.crumb{background:var(--bg-soft);border-bottom:1px solid var(--line-2);font-size:13.5px}
.crumb-in{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:13px 22px;max-width:var(--maxw);margin:0 auto;color:var(--muted)}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--brand)}
.crumb span[aria-current]{color:var(--ink-2);font-weight:600}
.crumb .sep{color:var(--muted-2);font-size:12px}

/* ---------------- 通用区块 ---------------- */
.sec{padding:clamp(48px,7vw,86px) 0}
.sec-soft{background:var(--bg-soft)}
.sec-tight{padding:clamp(36px,5vw,58px) 0}
.head{max-width:760px;margin:0 auto clamp(32px,4vw,52px);text-align:center}
.head.center{margin-left:auto;margin-right:auto}
.eyebrow{
  display:inline-flex;align-items:center;gap:7px;padding:5px 14px;border-radius:999px;
  background:rgba(22,87,232,.08);color:var(--brand);font-size:13px;font-weight:700;letter-spacing:.04em;margin-bottom:14px;
}
.head p.lead{font-size:17px;color:var(--muted);margin:0}
.head.left{text-align:left;margin-left:0}

/* ---------------- Hero ---------------- */
.hero{position:relative;overflow:hidden;background:
   radial-gradient(900px 460px at 78% -8%,rgba(0,184,255,.16),transparent 62%),
   radial-gradient(760px 420px at 12% 8%,rgba(22,87,232,.14),transparent 60%),
   linear-gradient(180deg,#f8fbff 0%,#ffffff 100%);
  border-bottom:1px solid var(--line-2);padding:clamp(52px,7vw,96px) 0 clamp(46px,6vw,76px);
}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:clamp(28px,4vw,58px);align-items:center}
.hero h1{margin-bottom:16px}
.hero h1 em{font-style:normal;color:var(--brand);position:relative;white-space:nowrap}
.hero-sub{font-size:clamp(16px,1.9vw,18.5px);color:var(--muted);margin-bottom:26px;max-width:600px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:30px}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px 26px;font-size:14px;color:var(--muted-2)}
.hero-meta b{color:var(--ink);font-weight:700}
.hero-art{position:relative}
.hero-art svg{width:100%;height:auto;filter:drop-shadow(0 24px 48px rgba(13,21,38,.12))}

/* ---------------- 数据条 ---------------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;margin-top:36px}
.stat{background:#fff;padding:24px 18px;text-align:center}
.stat b{display:block;font-size:clamp(26px,3.4vw,36px);font-weight:800;color:#4a86e8;line-height:1.1;letter-spacing:-.02em}
.stat span{font-size:13.5px;color:var(--muted)}

/* ---------------- 卡片网格 ---------------- */
.grid{display:grid;gap:20px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:26px 24px;
  transition:.24s ease;display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#cfdcf5}
.card h3{margin-bottom:8px;font-size:19px}
.card h3 a{color:var(--ink)}
.card h3 a:hover{color:var(--brand)}
.card p{color:var(--muted);font-size:15px;margin:0 0 14px}
.card .more{margin-top:auto;font-size:14px;font-weight:600;color:var(--brand)}
.ico{
  width:50px;height:50px;border-radius:13px;display:grid;place-items:center;margin-bottom:16px;
  background:linear-gradient(135deg,rgba(22,87,232,.10),rgba(0,184,255,.14));color:var(--brand);
}
.ico svg{width:25px;height:25px}

/* 服务卡带标签 */
.card-tag{display:flex;flex-wrap:wrap;gap:7px;margin-top:14px}
.tag{font-size:12.5px;padding:4px 11px;border-radius:999px;background:var(--bg-soft);color:var(--muted);border:1px solid var(--line-2)}

/* ---------------- 流程 ---------------- */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;counter-reset:s}
.step{position:relative;padding:22px 16px 18px;background:#fff;border:1px solid var(--line);border-radius:var(--radius)}
.step::before{
  counter-increment:s;content:counter(s,decimal-leading-zero);
  font-size:13px;font-weight:800;color:var(--brand);letter-spacing:.06em;
  display:block;margin-bottom:8px;
}
.step h4{font-size:16px;margin-bottom:6px}
.step p{font-size:14px;color:var(--muted);margin:0}

/* ---------------- 案例 ---------------- */
.case-card{border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;background:#fff;transition:.24s;display:flex;flex-direction:column}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#cfdcf5}
.case-vis{aspect-ratio:16/10;background:#eaf1fb;overflow:hidden;border-bottom:1px solid var(--line-2)}
.case-vis svg{width:100%;height:100%;display:block}
.case-body{padding:20px 22px 24px}
.case-body h3{font-size:18px;margin-bottom:8px}
.case-body h3 a{color:var(--ink)}
.case-body h3 a:hover{color:var(--brand)}
.case-body p{font-size:14.5px;color:var(--muted);margin-bottom:14px}
.case-meta{display:flex;flex-wrap:wrap;gap:8px}
.pill{font-size:12.5px;padding:4px 11px;border-radius:999px;background:rgba(22,87,232,.07);color:var(--brand);font-weight:600}

/* ---------------- 内容正文 ---------------- */
.article{max-width:820px}
.article h2{margin-top:1.6em;font-size:clamp(21px,2.4vw,27px)}
.article h3{margin-top:1.3em;font-size:19px;color:var(--ink-2)}
.article p{color:var(--ink-2);font-size:16.5px;line-height:1.85}
.article ul li{color:var(--ink-2);line-height:1.8}
.article ul li::marker{color:var(--brand)}
.lead-box{
  background:linear-gradient(135deg,rgba(22,87,232,.05),rgba(0,184,255,.06));
  border-left:3px solid var(--brand);border-radius:0 var(--radius) var(--radius) 0;padding:18px 22px;margin:0 0 26px;
}
.lead-box p{margin:0;color:var(--ink-2);font-size:16.5px}
.table-wrap{overflow-x:auto;margin:22px 0;border:1px solid var(--line);border-radius:var(--radius)}
table{width:100%;border-collapse:collapse;font-size:15px;min-width:520px}
th,td{padding:13px 16px;text-align:left;border-bottom:1px solid var(--line-2)}
th{background:var(--bg-soft);font-weight:700;color:var(--ink);font-size:14px;white-space:nowrap}
td{color:var(--ink-2)}
tbody tr:last-child td{border-bottom:0}

/* FAQ */
.faq{border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;background:#fff}
.faq details{border-bottom:1px solid var(--line-2)}
.faq details:last-child{border-bottom:0}
.faq summary{
  padding:18px 22px;cursor:pointer;font-weight:700;font-size:16px;list-style:none;
  display:flex;justify-content:space-between;align-items:center;gap:14px;color:var(--ink);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"＋";color:var(--brand);font-weight:400;font-size:19px;flex-shrink:0;transition:.2s}
.faq details[open] summary::after{content:"－"}
.faq details[open] summary{background:var(--bg-soft)}
.faq .fa-a{padding:0 22px 20px;color:var(--muted);font-size:15.5px}
.faq .fa-a p:last-child{margin-bottom:0}

/* ---------------- 侧栏 ---------------- */
.layout-side{display:grid;grid-template-columns:1fr 300px;gap:clamp(24px,3.4vw,46px);align-items:start}
.side{position:sticky;top:calc(var(--nav-h) + 20px);display:flex;flex-direction:column;gap:18px}
.side-box{border:1px solid var(--line);border-radius:var(--radius-lg);padding:20px;background:#fff}
.side-box h4{font-size:15.5px;margin-bottom:12px;padding-bottom:10px;border-bottom:1px solid var(--line-2)}
.side-list{list-style:none;margin:0;padding:0}
.side-list li{margin:0;border-bottom:1px dashed var(--line-2)}
.side-list li:last-child{border-bottom:0}
.side-list a{display:block;padding:9px 0;font-size:14.5px;color:var(--ink-2)}
.side-list a:hover{color:var(--brand)}
.side-cta{background:linear-gradient(150deg,var(--brand),var(--brand-2));color:#fff;border:0;text-align:center}
.side-cta h4{color:#fff;border-color:rgba(255,255,255,.22)}
.side-cta p{color:rgba(255,255,255,.85);font-size:14px}
.side-cta .btn{background:#fff;color:var(--brand);border-color:#fff;box-shadow:0 8px 20px rgba(0,0,0,.16);width:100%}
.side-cta .btn:hover{background:#f2f6ff;color:var(--brand-2)}
.side-cta a.tel{color:#fff;font-size:20px;font-weight:800;display:block;margin:6px 0 12px}

/* ---------------- 列表页条目 ---------------- */
.post-list{display:flex;flex-direction:column;gap:16px}
.post-item{display:grid;grid-template-columns:150px 1fr;gap:20px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:18px;transition:.22s}
.post-item:hover{border-color:#cfdcf5;box-shadow:var(--shadow);transform:translateY(-2px)}
.post-thumb{aspect-ratio:16/10;border-radius:12px;background:#eaf1fb;overflow:hidden;flex:0 0 168px}
.post-thumb svg{width:100%;height:100%;display:block}
.post-item h3{font-size:18px;margin-bottom:6px}
.post-item h3 a{color:var(--ink)}
.post-item h3 a:hover{color:var(--brand)}
.post-item p{font-size:14.5px;color:var(--muted);margin:0 0 8px}
.post-meta{font-size:13px;color:var(--muted-2);display:flex;gap:14px;flex-wrap:wrap}

/* ---------------- 联系表单 ---------------- */
.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:14px;font-weight:600;color:var(--ink-2)}
.field input,.field select,.field textarea{
  font-family:inherit;font-size:15px;padding:12px 14px;border:1px solid var(--line);border-radius:11px;background:#fff;color:var(--ink);transition:.18s;
}
.field input:focus,.field select:focus,.field textarea:focus{outline:0;border-color:var(--brand);box-shadow:0 0 0 3px rgba(22,87,232,.12)}
.field textarea{min-height:120px;resize:vertical}
.form-note{font-size:13px;color:var(--muted-2);margin-top:12px}
.form-ok{display:none;padding:14px 18px;border-radius:11px;background:rgba(22,214,124,.10);border:1px solid rgba(22,214,124,.35);color:#0a7a48;font-size:14.5px;margin-top:14px}
.form-ok.show{display:block}
.form-err{display:none;padding:14px 18px;border-radius:11px;background:rgba(231,76,60,.09);border:1px solid rgba(231,76,60,.32);color:#b03a2e;font-size:14.5px;margin-top:14px}
.form-err.show{display:block}
/* 蜜罐：真人看不到，机器人会填 */
.hp-field{position:absolute!important;left:-9999px!important;top:-9999px!important;height:0!important;overflow:hidden!important;opacity:0!important}
button[disabled]{opacity:.6;cursor:not-allowed}

.contact-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:34px}
.c-card{border:1px solid var(--line);border-radius:var(--radius-lg);padding:22px;background:#fff;text-align:center}
.c-card .ico{margin:0 auto 12px}
.c-card b{display:block;font-size:15px;margin-bottom:4px}
.c-card span{font-size:14px;color:var(--muted);word-break:break-all}
.c-card a{color:var(--ink);font-weight:700}

/* ---------------- 为什么选我们 ---------------- */
.why{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.why-item{padding:24px 20px;border-radius:var(--radius-lg);background:#fff;border:1px solid var(--line)}
.why-item b{display:block;font-size:16.5px;margin-bottom:8px}
.why-item p{font-size:14.5px;color:var(--muted);margin:0}

/* ---------------- CTA 条 ---------------- */
.cta-band{
  background:linear-gradient(135deg,var(--brand) 0%,#0b46c8 55%,#083aad 100%);
  color:#fff;border-radius:var(--radius-lg);padding:clamp(34px,5vw,56px) clamp(24px,4vw,52px);
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;position:relative;overflow:hidden;
}
.cta-band::after{content:"";position:absolute;right:-60px;top:-80px;width:300px;height:300px;border-radius:50%;background:radial-gradient(circle,rgba(0,184,255,.30),transparent 68%)}
.cta-band h2{color:#fff;margin-bottom:8px;position:relative}
.cta-band p{color:rgba(255,255,255,.85);margin:0;font-size:16px;position:relative}
.cta-band .btn{background:#fff;color:var(--brand);border-color:#fff;box-shadow:0 10px 26px rgba(0,0,0,.18);position:relative}
.cta-band .btn:hover{background:#f2f6ff;color:var(--brand-2)}
.cta-band a.tel-big{color:#fff;font-size:clamp(24px,3.2vw,32px);font-weight:800;position:relative;display:block}

/* ---------------- 页脚 ---------------- */
.footer{background:var(--bg-dark);color:rgba(255,255,255,.66);padding:clamp(42px,5vw,66px) 0 0;font-size:14.5px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px;padding-bottom:38px}
.footer h4{color:#fff;font-size:15px;margin-bottom:14px;letter-spacing:.02em}
.footer ul{list-style:none;margin:0;padding:0}
.footer ul li{margin:0 0 9px}
.footer a{color:rgba(255,255,255,.66)}
.footer a:hover{color:#fff}
.footer .f-brand img{height:40px;width:auto;margin-bottom:16px}
.footer .f-brand p{color:rgba(255,255,255,.60);margin-bottom:12px;max-width:340px}
.footer .f-contact{color:rgba(255,255,255,.82);font-size:15px}
.footer .f-contact b{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.10);padding:20px 0 26px;font-size:13.5px;color:rgba(255,255,255,.50);display:flex;flex-wrap:wrap;gap:10px 22px;justify-content:space-between}
.footer-bottom a{color:rgba(255,255,255,.55)}
.badge-gov{display:inline-flex;align-items:center;gap:6px;margin-right:12px}

/* ---------------- 响应式 ---------------- */
@media (max-width:1080px){
  .footer-grid{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:repeat(3,1fr)}
  .why,.contact-cards{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:960px){
  .nav-toggle{display:flex}
  .nav-links{
    display:none;position:absolute;top:var(--nav-h);left:0;right:0;background:#fff;
    border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;gap:0;padding:10px 16px 18px;
    box-shadow:var(--shadow-md);max-height:calc(100vh - var(--nav-h));overflow:auto;
  }
  .nav-links.open{display:flex}
  .nav-links a,.nav-dd>a{padding:13px 12px;font-size:16px;border-radius:10px}
  .nav-cta{margin:10px 12px 0!important;text-align:center}
  .nav-dd{display:flex;flex-direction:column}
  .nav-dd>a{justify-content:space-between}
  .nav-dd>a svg{transform:rotate(-90deg)}
  .nav-dd-menu{
    position:static;transform:none;opacity:1;visibility:visible;box-shadow:none;border:0;
    padding:0 0 6px 12px;background:var(--bg-soft);margin:4px 12px 6px;border-radius:10px;
  }
  .nav-dd-menu a{padding:10px 12px;font-size:15px}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .hero-art{order:-1;max-width:460px;margin:0 auto}
  .layout-side{grid-template-columns:1fr}
  .side{position:static;flex-direction:row;flex-wrap:wrap}
  .side-box{flex:1 1 260px}
  .stats{grid-template-columns:repeat(2,1fr)}
  .g3,.g4{grid-template-columns:repeat(2,1fr)}
  .g2{grid-template-columns:1fr}
}
@media (max-width:640px){
  body{font-size:15.5px}
  .wrap{padding:0 16px}
  .steps{grid-template-columns:1fr 1fr}
  .why,.contact-cards,.g3,.g4{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .post-item{grid-template-columns:1fr}
  .post-thumb{aspect-ratio:16/9}
  .form-grid{grid-template-columns:1fr}
  .cta-band{flex-direction:column;align-items:flex-start}
  .btn{width:100%}
  .hero-actions{width:100%}
  .stats{grid-template-columns:repeat(2,1fr)}
}

/* 打印 */
@media print{.nav,.footer,.cta-band,.btn{display:none!important}}

/* 动效偏好 */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
}
.reveal{opacity:0;transform:translateY(16px);transition:opacity .55s ease,transform .55s ease}
.reveal.in{opacity:1;transform:none}