/* ============ 新媒体运营之家 官网样式 ============ */
:root{
  --bg:#060910;
  --bg-2:#0a0f1c;
  --card:rgba(255,255,255,.045);
  --card-strong:rgba(255,255,255,.075);
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(226,35,26,.35);
  --red:#e2231a;
  --red-light:#ff5a4e;
  --red-dim:rgba(226,35,26,.14);
  --text:#eef2fa;
  --muted:#94a3bd;
  --radius:18px;
  --shadow:0 24px 60px rgba(0,0,0,.45);
  --font:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font);background:var(--bg);color:var(--text);
  line-height:1.75;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{line-height:1.3;margin:0;font-weight:700;letter-spacing:-.4px}
p{margin:0}
ul{margin:0;padding:0}

/* 背景装饰 */
.bg-grid{
  position:fixed;inset:0;z-index:-2;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 50% 0%,#000 0%,transparent 75%);
  -webkit-mask-image:radial-gradient(circle at 50% 0%,#000 0%,transparent 75%);
}
.bg-glow{
  position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:
    radial-gradient(720px 420px at 14% -8%,rgba(226,35,26,.22),transparent 68%),
    radial-gradient(680px 420px at 88% 4%,rgba(38,86,255,.16),transparent 70%),
    radial-gradient(900px 600px at 50% 100%,rgba(226,35,26,.08),transparent 70%);
}
.wrap{width:min(1200px,100% - 48px);margin-inline:auto}

/* 顶栏 */
.site-header{
  position:sticky;top:0;z-index:50;backdrop-filter:blur(18px);
  background:rgba(6,9,16,.72);border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:28px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand img{border-radius:10px;background:rgba(255,255,255,.06);padding:2px}
.brand-name{font-weight:700;font-size:17px;letter-spacing:.5px;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto;flex-wrap:wrap}
.main-nav a{
  padding:8px 13px;border-radius:10px;font-size:14.5px;color:var(--muted);
  transition:.2s;
}
.main-nav a:hover{color:var(--text);background:rgba(255,255,255,.06)}
.main-nav a.active{color:#fff;background:var(--red-dim);box-shadow:inset 0 0 0 1px var(--line-strong)}
.header-actions{margin-left:8px}
.nav-toggle{display:none;margin-left:auto;width:42px;height:38px;border:1px solid var(--line);border-radius:10px;background:transparent;cursor:pointer}
.nav-toggle span{display:block;height:2px;margin:4px 8px;background:var(--text);border-radius:2px;transition:.2s}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:12px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:.22s;white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(120deg,var(--red),#ff4d3d);
  color:#fff;box-shadow:0 12px 30px rgba(226,35,26,.35);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 38px rgba(226,35,26,.48)}
.btn-ghost{border-color:var(--line);color:var(--text);background:rgba(255,255,255,.03)}
.btn-ghost:hover{border-color:var(--line-strong);background:var(--red-dim)}
.btn-sm{padding:8px 16px;font-size:13.5px;border-radius:10px}

/* 通用区块 */
section{padding:88px 0}
.section-head{max-width:760px;margin-bottom:48px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:2px;
  text-transform:uppercase;color:var(--red-light);margin-bottom:16px;
}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--red)}
.section-head h2{font-size:clamp(26px,3.4vw,40px);margin-bottom:14px}
.section-head p{color:var(--muted);font-size:15.5px}
.center{text-align:center;margin-inline:auto}

/* Hero */
.hero{padding:96px 0 72px;position:relative}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:999px;
  border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--muted);
  font-size:13px;margin-bottom:22px;
}
.hero-badge i{width:7px;height:7px;border-radius:50%;background:var(--red-light);box-shadow:0 0 10px var(--red-light)}
.hero h1{font-size:clamp(32px,4.6vw,58px);letter-spacing:-1.2px;margin-bottom:18px}
.grad-text{background:linear-gradient(100deg,#fff 20%,#ff8b80 60%,var(--red));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:18px;color:#cfd8ea;margin-bottom:14px;font-weight:600}
.hero-desc{color:var(--muted);font-size:15.5px;max-width:560px;margin-bottom:32px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:36px}
.hero-note{display:flex;gap:26px;flex-wrap:wrap;color:var(--muted);font-size:13px}
.hero-note span{display:flex;align-items:center;gap:7px}
.hero-note span::before{content:"✓";color:var(--red-light);font-weight:700}

/* Hero 右侧可视化 */
.hero-visual{position:relative;height:420px}
.orb{
  position:absolute;border-radius:50%;filter:blur(2px);animation:float 7s ease-in-out infinite;
}
.orb.a{width:260px;height:260px;right:20px;top:10px;background:radial-gradient(circle at 30% 30%,rgba(255,90,78,.55),rgba(226,35,26,.06) 70%);box-shadow:0 0 80px rgba(226,35,26,.35)}
.orb.b{width:180px;height:180px;left:10px;bottom:30px;background:radial-gradient(circle at 40% 40%,rgba(70,120,255,.45),transparent 70%);animation-delay:-2.5s}
.visual-card{
  position:absolute;inset:56px 20px 40px 40px;border-radius:22px;border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(255,255,255,.08),rgba(255,255,255,.02));
  backdrop-filter:blur(16px);box-shadow:var(--shadow);padding:26px;overflow:hidden;
}
.visual-card::after{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:linear-gradient(120deg,transparent 40%,rgba(255,255,255,.09) 50%,transparent 60%);
  transform:translateX(-100%);animation:sheen 6s ease-in-out infinite;
}
.vc-head{display:flex;align-items:center;gap:8px;margin-bottom:20px}
.vc-dots{display:flex;gap:5px}
.vc-dots i{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.18)}
.vc-dots i:first-child{background:var(--red)}
.vc-title{font-size:12.5px;color:var(--muted);margin-left:6px}
.vc-rows{display:grid;gap:12px}
.vc-row{display:flex;align-items:center;gap:12px;padding:11px 14px;border-radius:12px;background:rgba(255,255,255,.04);border:1px solid var(--line)}
.vc-ico{width:30px;height:30px;border-radius:9px;display:grid;place-items:center;font-size:13px;font-weight:700;background:var(--red-dim);color:var(--red-light);flex:none}
.vc-name{font-size:13.5px;font-weight:600}
.vc-meta{font-size:11.5px;color:var(--muted)}
.vc-state{margin-left:auto;font-size:11px;padding:3px 9px;border-radius:999px;background:rgba(80,220,150,.12);color:#57e0a0;white-space:nowrap}
.vc-bar{height:4px;border-radius:4px;background:rgba(255,255,255,.08);margin-top:16px;overflow:hidden}
.vc-bar i{display:block;height:100%;width:68%;background:linear-gradient(90deg,var(--red),#ff8b80);animation:grow 3s ease-in-out infinite alternate}

@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-16px)}}
@keyframes sheen{0%,60%{transform:translateX(-110%)}100%{transform:translateX(110%)}}
@keyframes grow{from{width:38%}to{width:72%}}

/* 数据条 */
.stats-strip{border-block:1px solid var(--line);background:rgba(255,255,255,.02)}
.stats-inner{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:34px 0}
.stat{text-align:center}
.stat b{display:block;font-size:clamp(24px,3vw,34px);letter-spacing:-.5px;
  background:linear-gradient(120deg,#fff,#ff9a90);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{font-size:13.5px;color:var(--muted)}

/* 产品卡片 */
.products-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.p-card{
  position:relative;padding:30px 26px;border-radius:var(--radius);border:1px solid var(--line);
  background:linear-gradient(170deg,rgba(255,255,255,.06),rgba(255,255,255,.015));
  overflow:hidden;transition:.28s;display:flex;flex-direction:column;
}
.p-card:hover{transform:translateY(-6px);border-color:var(--line-strong);box-shadow:0 26px 60px rgba(0,0,0,.5)}
.p-card .p-tag{font-size:12px;color:var(--red-light);letter-spacing:1px;margin-bottom:14px}
.p-card h3{font-size:19px;margin-bottom:10px}
.p-card p{color:var(--muted);font-size:14px;flex:1}
.p-feats{list-style:none;margin:18px 0 22px;display:grid;gap:8px}
.p-feats li{font-size:13.5px;color:#c6d0e2;display:flex;gap:8px;align-items:flex-start}
.p-feats li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--red);margin-top:8px;flex:none}
.p-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:18px;border-top:1px solid var(--line)}
.p-ver{font-size:12.5px;color:var(--muted)}
.p-ver b{color:var(--text);font-weight:600}

/* 能力矩阵 */
.cap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.cap{
  padding:26px 24px;border-radius:16px;border:1px solid var(--line);
  background:rgba(255,255,255,.035);transition:.25s;
}
.cap:hover{background:rgba(255,255,255,.06);border-color:var(--line-strong)}
.cap-ico{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;margin-bottom:16px;
  background:linear-gradient(140deg,var(--red-dim),rgba(255,255,255,.04));border:1px solid var(--line-strong);
  font-size:18px;color:var(--red-light);
}
.cap h3{font-size:16.5px;margin-bottom:8px}
.cap p{font-size:13.8px;color:var(--muted)}

/* 流程 */
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:step}
.flow{position:relative;padding:26px 22px;border-radius:16px;border:1px solid var(--line);background:rgba(255,255,255,.03)}
.flow-num{
  font-size:34px;font-weight:800;line-height:1;color:transparent;
  -webkit-text-stroke:1px rgba(226,35,26,.6);margin-bottom:12px;letter-spacing:0;
}
.flow h3{font-size:16px;margin-bottom:8px}
.flow p{font-size:13.5px;color:var(--muted)}

/* 产品页 */
.page-hero{padding:76px 0 40px}
.page-hero h1{font-size:clamp(28px,3.8vw,46px);margin-bottom:16px;letter-spacing:-1px}
.page-hero .lead{color:var(--muted);font-size:16px;max-width:760px}
.crumb{font-size:13px;color:var(--muted);margin-bottom:20px}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--red-light)}
.crumb span{margin:0 8px;opacity:.5}
.detail-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:34px;align-items:start}
.content-card{
  padding:34px;border-radius:var(--radius);border:1px solid var(--line);
  background:linear-gradient(170deg,rgba(255,255,255,.055),rgba(255,255,255,.015));
}
.content-card h2{font-size:22px;margin-bottom:14px}
.content-card h3{font-size:17px;margin:26px 0 10px}
.content-card p{color:#c3cddf;font-size:14.8px;margin-bottom:12px}
.content-card ul{display:grid;gap:10px;margin:14px 0 6px}
.content-card ul li{font-size:14.5px;color:#c3cddf;padding-left:20px;position:relative}
.content-card ul li::before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;background:var(--red)}
.side-card{
  padding:28px;border-radius:var(--radius);border:1px solid var(--line-strong);
  background:linear-gradient(170deg,rgba(226,35,26,.12),rgba(255,255,255,.02));
  position:sticky;top:96px;
}
.side-card h3{font-size:18px;margin-bottom:6px}
.side-meta{display:grid;gap:10px;margin:18px 0 22px;font-size:13.5px;color:var(--muted)}
.side-meta div{display:flex;justify-content:space-between;border-bottom:1px dashed var(--line);padding-bottom:9px}
.side-meta div b{color:var(--text);font-weight:600}
.side-card .btn{width:100%}

/* 下载页 */
.dl-list{display:grid;gap:18px}
.dl-item{
  display:grid;grid-template-columns:1fr auto;gap:20px;align-items:center;
  padding:26px 28px;border-radius:16px;border:1px solid var(--line);background:rgba(255,255,255,.035);
  transition:.25s;
}
.dl-item:hover{border-color:var(--line-strong);background:rgba(255,255,255,.055)}
.dl-item h3{font-size:18px;margin-bottom:6px}
.dl-item p{font-size:13.5px;color:var(--muted)}
.dl-meta{display:flex;gap:18px;margin-top:10px;font-size:12.5px;color:var(--muted);flex-wrap:wrap}
.dl-meta span{padding:3px 10px;border-radius:8px;background:rgba(255,255,255,.05);border:1px solid var(--line)}
.dl-actions{display:flex;flex-direction:column;gap:8px;align-items:flex-end}
.dl-code{font-size:12px;color:var(--muted)}
.dl-note{margin-top:26px;padding:18px 20px;border-radius:12px;border:1px dashed var(--line);color:var(--muted);font-size:13.5px;background:rgba(255,255,255,.02)}

/* 关于 */
.about-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:start}
.timeline{display:grid;gap:0;border-left:2px solid var(--line);padding-left:24px;margin-top:8px}
.timeline .tl-item{position:relative;padding-bottom:26px}
.timeline .tl-item::before{content:"";position:absolute;left:-31px;top:8px;width:10px;height:10px;border-radius:50%;background:var(--red);box-shadow:0 0 0 4px rgba(226,35,26,.18)}
.tl-year{font-size:13px;color:var(--red-light);letter-spacing:1px;margin-bottom:4px}
.tl-text{font-size:14.5px;color:#c3cddf}
.adv-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.adv{padding:22px;border-radius:14px;border:1px solid var(--line);background:rgba(255,255,255,.035)}
.adv h4{font-size:15.5px;margin-bottom:8px}
.adv p{font-size:13.5px;color:var(--muted)}

/* FAQ */
.faq-list{display:grid;gap:12px;max-width:900px}
.faq-item{border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.03);overflow:hidden}
.faq-item summary{
  cursor:pointer;padding:20px 24px;font-size:15.5px;font-weight:600;list-style:none;
  display:flex;align-items:center;gap:12px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{content:"+";color:var(--red-light);font-weight:700;font-size:16px;width:16px;flex:none}
.faq-item[open] summary::before{content:"–"}
.faq-item .faq-answer{padding:0 24px 22px 52px;color:var(--muted);font-size:14.2px}

/* CTA */
.cta-band{
  margin:20px auto 0;border-radius:24px;border:1px solid var(--line-strong);
  background:linear-gradient(120deg,rgba(226,35,26,.18),rgba(255,255,255,.03) 55%,rgba(38,86,255,.12));
  padding:44px 40px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:8px}
.cta-band p{color:var(--muted);font-size:14.5px}

/* 页脚 */
.site-footer{border-top:1px solid var(--line);background:rgba(255,255,255,.02);padding:58px 0 26px;margin-top:60px}
.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,.7fr);gap:36px}
.footer-slogan{color:#d5deed;font-size:14.5px;margin:16px 0 8px}
.footer-desc{color:var(--muted);font-size:13px;max-width:300px}
.footer-col h4{font-size:14px;margin-bottom:14px;color:#fff;letter-spacing:.5px}
.footer-col a{display:block;font-size:13.2px;color:var(--muted);padding:5px 0;transition:.2s}
.footer-col a:hover{color:var(--red-light)}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid var(--line);margin-top:40px;padding-top:22px;
  font-size:12.5px;color:var(--muted);
}
.footer-bottom a:hover{color:var(--red-light)}

/* 响应式 */
@media (max-width:1024px){
  .hero-grid,.detail-grid,.about-grid{grid-template-columns:1fr}
  .hero-visual{height:360px;order:-1}
  .products-grid,.cap-grid{grid-template-columns:repeat(2,1fr)}
  .flow-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .side-card{position:static}
  .dl-item{grid-template-columns:1fr}
  .dl-actions{align-items:flex-start;flex-direction:row}
}
@media (max-width:760px){
  .wrap{width:calc(100% - 32px)}
  .header-inner{height:64px;gap:12px}
  .main-nav{
    display:none;position:absolute;top:64px;left:0;right:0;flex-direction:column;align-items:stretch;
    background:rgba(8,12,22,.98);border-bottom:1px solid var(--line);padding:14px 20px 18px;gap:4px;
  }
  .main-nav.open{display:flex}
  .main-nav a{padding:11px 12px}
  .header-actions{display:none}
  .nav-toggle{display:block}
  .hero{padding:56px 0 40px}
  .hero-visual{height:320px;margin-bottom:8px}
  .visual-card{inset:32px 8px 24px 8px;padding:18px}
  section{padding:62px 0}
  .stats-inner{grid-template-columns:repeat(2,1fr);gap:20px;padding:26px 0}
  .products-grid,.cap-grid,.flow-grid,.adv-grid,.footer-grid{grid-template-columns:1fr}
  .content-card{padding:24px}
  .side-card{padding:22px}
  .cta-band{padding:30px 24px;text-align:left}
  .footer-bottom{flex-direction:column}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
}

/* ===== 运营课堂 ===== */
.art-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.art-card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:26px;display:flex;flex-direction:column;gap:12px;transition:transform .25s,border-color .25s}
.art-card:hover{transform:translateY(-4px);border-color:rgba(255,120,110,.45)}
.art-meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--muted)}
.art-cat{display:inline-block;padding:3px 10px;border-radius:999px;background:rgba(255,107,97,.12);color:#ff8b80;font-size:12px;font-weight:600}
.art-card h2{font-size:19px;line-height:1.5;margin:0}
.art-card h2 a{color:var(--text)}
.art-card h2 a:hover{color:#ff8b80}
.art-card>p{color:var(--muted);font-size:14px;line-height:1.8;flex:1;margin:0}
.art-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.art-tags{display:flex;gap:8px;flex-wrap:wrap}
.art-tags span{font-size:12px;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:2px 10px}
.art-more{font-size:14px;color:#ff8b80;font-weight:600;white-space:nowrap}
.art-empty{text-align:center}
.article-body{font-size:15.5px;line-height:2}
.article-body p{margin:0 0 18px;color:#c9d2e0}
.article-body h2{font-size:21px;margin:34px 0 14px;padding-left:12px;border-left:3px solid #ff6b61}
.article-body h3{font-size:17px;margin:26px 0 10px}
.article-body ul{margin:0 0 18px;padding-left:22px;color:#c9d2e0}
.article-body li{margin-bottom:8px}
.art-nav{display:flex;justify-content:space-between;gap:16px;margin-top:22px}
.art-nav-item{flex:1;max-width:48%;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px 20px;display:flex;flex-direction:column;gap:6px;transition:border-color .25s}
.art-nav-item:hover{border-color:rgba(255,120,110,.45)}
.art-nav-item span{font-size:12px;color:var(--muted)}
.art-nav-item b{font-size:14px;color:var(--text);font-weight:600;line-height:1.5}
.art-nav-item.next{text-align:right}
@media (max-width:900px){.art-grid{grid-template-columns:1fr}}
@media (max-width:760px){.art-nav{flex-direction:column}.art-nav-item{max-width:100%}}