*{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg-black:#0a0a0e;
  --bg-d1:#161620;
  --bg-d2:#1f1f2c;
  --line:#2a2a3e;
  --pink:#ff2d7c;
  --pink-soft:#ff6ba3;
  --cyan:#00e5ff;
  --cyan-soft:#5feaff;
  --yellow:#ffea00;
  --text:#e9e9f5;
  --text-dim:#8a8aa3;
  --gradient-1:linear-gradient(135deg,#ff2d7c 0%,#9c33ff 100%);
  --gradient-2:linear-gradient(135deg,#00e5ff 0%,#7c4dff 100%);
}
html,body{background:var(--bg-black);color:var(--text);font-family:-apple-system,'PingFang SC','Helvetica Neue','Source Han Sans CN',sans-serif;font-size:14px;line-height:1.55;overflow-x:hidden}
a{color:var(--cyan-soft);text-decoration:none}
a:hover{color:var(--pink-soft)}
img{max-width:100%;display:block}
h1,h2,h3,h4{font-weight:800;letter-spacing:-.3px}

/* 顶部固定窄条 - 移动app模拟 */
.app-bar{position:sticky;top:0;z-index:50;background:rgba(10,10,14,.88);backdrop-filter:blur(20px);border-bottom:1px solid var(--line)}
.app-bar .row{max-width:1240px;margin:0 auto;padding:12px 24px;display:flex;align-items:center;gap:18px}
.app-bar .logo-mini{display:flex;align-items:center;gap:8px;font-size:18px;font-weight:900}
.app-bar .logo-mini .dot{width:24px;height:24px;border-radius:50%;background:var(--gradient-1);box-shadow:0 0 18px rgba(255,45,124,.5);position:relative}
.app-bar .logo-mini .dot:before{content:'';position:absolute;inset:7px;background:#fff;border-radius:50%}
.app-bar .logo-mini b{background:var(--gradient-1);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;letter-spacing:1px}
.app-bar .logo-mini span{color:var(--text-dim);font-size:11px;font-weight:500;letter-spacing:4px}
.app-bar nav{display:flex;gap:0;margin-left:auto;overflow-x:auto;scrollbar-width:none}
.app-bar nav::-webkit-scrollbar{display:none}
.app-bar nav a{color:var(--text-dim);padding:6px 14px;border-radius:18px;font-size:13px;white-space:nowrap;font-weight:600;transition:all .2s}
.app-bar nav a:hover{color:var(--text)}
.app-bar nav a.on{background:var(--gradient-1);color:#fff;box-shadow:0 4px 16px rgba(255,45,124,.35)}

/* 巨型标语 */
.feature-hero{padding:48px 24px 32px;max-width:1240px;margin:0 auto;text-align:center;position:relative}
.feature-hero:before{content:'';position:absolute;top:0;left:50%;transform:translateX(-50%);width:600px;height:240px;background:radial-gradient(ellipse,rgba(255,45,124,.18) 0%,transparent 70%);pointer-events:none;z-index:-1}
.feature-hero h1{font-size:60px;line-height:1;letter-spacing:-2px;margin-bottom:18px;font-weight:900}
.feature-hero h1 span{background:var(--gradient-1);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.feature-hero h1 em{background:var(--gradient-2);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;font-style:normal}
.feature-hero .tag-row{display:inline-flex;gap:10px;margin-bottom:18px;flex-wrap:wrap;justify-content:center}
.feature-hero .tag-row span{background:rgba(255,255,255,.06);border:1px solid var(--line);padding:5px 14px;border-radius:14px;font-size:12px;color:var(--text-dim);letter-spacing:1px}
.feature-hero .desc-hero{color:var(--text-dim);font-size:15px;max-width:680px;margin:0 auto 22px;line-height:1.8}
.feature-hero .stat-row{display:flex;justify-content:center;gap:42px;margin-top:30px}
.feature-hero .stat-row .it b{display:block;font-size:32px;background:var(--gradient-2);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;font-weight:900}
.feature-hero .stat-row .it span{color:var(--text-dim);font-size:11px;letter-spacing:2px}

/* 主区 */
.dm-main{max-width:1240px;margin:0 auto;padding:0 24px 80px}

/* 区块标题 */
.sec-h{display:flex;align-items:flex-end;gap:14px;margin:50px 0 24px;padding-bottom:0}
.sec-h h2{font-size:30px;line-height:1;font-weight:900;letter-spacing:-1px}
.sec-h h2 i{color:var(--pink);font-style:normal}
.sec-h .meta-h{color:var(--text-dim);font-size:12px;letter-spacing:3px;margin-bottom:4px}
.sec-h .more-h{margin-left:auto;background:var(--gradient-1);color:#fff;padding:8px 18px;border-radius:18px;font-size:13px;font-weight:600;align-self:center}

/* 手机屏 9:16 卡片网格 - 模拟竖屏短视频 */
.phone-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
.phone-card{background:var(--bg-d1);border-radius:18px;overflow:hidden;position:relative;cursor:pointer;border:1px solid var(--line);transition:all .25s}
.phone-card:hover{transform:translateY(-4px);border-color:var(--pink);box-shadow:0 14px 32px rgba(255,45,124,.18)}
.phone-card .screen{position:relative;aspect-ratio:9/16;overflow:hidden;background:#000}
.phone-card .screen img{width:100%;height:100%;object-fit:cover}
.phone-card .screen:before{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 0%,transparent 50%,rgba(0,0,0,.85) 100%);pointer-events:none}
.phone-card .notch{position:absolute;top:8px;left:50%;transform:translateX(-50%);width:60px;height:6px;background:#000;border-radius:6px;opacity:.7}
.phone-card .badge-hot{position:absolute;top:14px;left:10px;background:var(--gradient-1);color:#fff;font-size:10px;padding:3px 9px;border-radius:10px;font-weight:700;letter-spacing:1px;box-shadow:0 4px 12px rgba(255,45,124,.4)}
.phone-card .like-stack{position:absolute;right:10px;bottom:60px;display:flex;flex-direction:column;gap:10px;color:#fff;text-align:center;font-size:10px;text-shadow:0 1px 4px rgba(0,0,0,.7)}
.phone-card .like-stack .ic{width:36px;height:36px;background:rgba(0,0,0,.4);border-radius:50%;display:flex;align-items:center;justify-content:center;backdrop-filter:blur(8px);font-size:16px;color:#fff;margin:0 auto 3px}
.phone-card .like-stack .ic.red{background:rgba(255,45,124,.7)}
.phone-card .info-bottom{position:absolute;left:10px;right:60px;bottom:12px;color:#fff;text-shadow:0 1px 4px rgba(0,0,0,.7)}
.phone-card .info-bottom h4{font-size:13px;font-weight:800;margin-bottom:4px;line-height:1.3;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.phone-card .info-bottom .meta-b{font-size:10px;color:rgba(255,255,255,.7);letter-spacing:.5px}
.phone-card .info-bottom .meta-b b{color:var(--cyan-soft);font-weight:600}

/* 大尺寸 hero 卡 */
.hero-feed{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-bottom:50px}
.hero-feed .big-phone{background:var(--bg-d1);border:1px solid var(--line);border-radius:24px;overflow:hidden;position:relative;cursor:pointer;transition:all .25s}
.hero-feed .big-phone:hover{transform:translateY(-6px);border-color:var(--cyan);box-shadow:0 20px 48px rgba(0,229,255,.2)}
.hero-feed .big-phone .screen{aspect-ratio:9/14;position:relative;background:#000;overflow:hidden}
.hero-feed .big-phone img{width:100%;height:100%;object-fit:cover}
.hero-feed .big-phone .screen:after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.45) 0%,transparent 30%,transparent 60%,rgba(0,0,0,.9) 100%);pointer-events:none}
.hero-feed .big-phone .notch{position:absolute;top:14px;left:50%;transform:translateX(-50%);width:90px;height:8px;background:#000;border-radius:6px;opacity:.7}
.hero-feed .big-phone .top-info{position:absolute;top:36px;left:18px;right:18px;color:#fff}
.hero-feed .big-phone .top-info .ribbon{display:inline-block;background:var(--gradient-1);color:#fff;font-size:10px;padding:4px 11px;border-radius:11px;font-weight:700;letter-spacing:1px}
.hero-feed .big-phone .bot-info{position:absolute;left:18px;right:18px;bottom:18px;color:#fff;text-shadow:0 1px 4px rgba(0,0,0,.7)}
.hero-feed .big-phone .bot-info h3{font-size:22px;font-weight:900;line-height:1.2;margin-bottom:8px;letter-spacing:-.5px}
.hero-feed .big-phone .bot-info p{font-size:13px;color:rgba(255,255,255,.85);line-height:1.6;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.hero-feed .big-phone .bot-info .stat{display:flex;gap:14px;font-size:11px;color:rgba(255,255,255,.65);letter-spacing:1px}
.hero-feed .big-phone .bot-info .stat b{color:var(--cyan-soft);font-weight:700}
.hero-feed .big-phone .like-stack-big{position:absolute;right:14px;bottom:120px;display:flex;flex-direction:column;gap:14px;color:#fff;text-align:center;font-size:11px;text-shadow:0 1px 4px rgba(0,0,0,.7)}
.hero-feed .big-phone .like-stack-big .ic{width:44px;height:44px;background:rgba(255,255,255,.12);border-radius:50%;display:flex;align-items:center;justify-content:center;backdrop-filter:blur(10px);font-size:18px;margin:0 auto 4px}
.hero-feed .big-phone .like-stack-big .ic.red{background:rgba(255,45,124,.85)}

/* 长文章卡片 */
.dm-essay{background:linear-gradient(135deg,var(--bg-d1) 0%,var(--bg-d2) 100%);border:1px solid var(--line);border-radius:20px;padding:32px 36px;margin-bottom:16px;position:relative;overflow:hidden}
.dm-essay:before{content:'';position:absolute;top:0;left:0;width:5px;height:100%;background:var(--gradient-1)}
.dm-essay .hashtag{display:inline-block;background:rgba(255,45,124,.12);color:var(--pink-soft);padding:5px 14px;border-radius:12px;font-size:12px;letter-spacing:1px;margin-bottom:14px;font-weight:700}
.dm-essay .hashtag:before{content:'# '}
.dm-essay h3{font-size:24px;font-weight:900;color:var(--text);margin-bottom:14px;letter-spacing:-.5px;line-height:1.3}
.dm-essay p{color:#c8c8d8;font-size:15px;line-height:1.85;letter-spacing:.3px}
.dm-essay .by-row{display:flex;justify-content:space-between;color:var(--text-dim);font-size:12px;letter-spacing:1px;margin-top:18px;padding-top:14px;border-top:1px solid var(--line)}
.dm-essay .by-row b{color:var(--cyan-soft);font-weight:600}

/* FAQ 气泡 */
.dm-faq{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:24px}
.dm-faq .qb{background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:18px;padding:18px 22px;position:relative}
.dm-faq .qb:before{content:'?';position:absolute;left:-12px;top:18px;width:24px;height:24px;border-radius:50%;background:var(--gradient-1);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:900;font-size:14px}
.dm-faq h4{font-size:15px;color:var(--pink-soft);margin-bottom:8px;font-weight:700;padding-left:12px}
.dm-faq p{color:var(--text-dim);font-size:13px;line-height:1.75;padding-left:12px}

/* 页脚 */
.dm-foot{padding:48px 24px 32px;background:#06060a;border-top:1px solid var(--line);margin-top:80px}
.dm-foot .wrap{max-width:1240px;margin:0 auto}
.dm-foot .brand-fr{display:flex;align-items:center;gap:14px;margin-bottom:18px}
.dm-foot .brand-fr .dot{width:38px;height:38px;border-radius:50%;background:var(--gradient-1);box-shadow:0 0 24px rgba(255,45,124,.5);position:relative}
.dm-foot .brand-fr .dot:before{content:'';position:absolute;inset:11px;background:#fff;border-radius:50%}
.dm-foot .brand-fr h3{font-size:26px;background:var(--gradient-1);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;font-weight:900;letter-spacing:1px}
.dm-foot p{color:var(--text-dim);font-size:13px;line-height:1.9;max-width:920px}
.dm-foot .links-fr{display:flex;flex-wrap:wrap;gap:14px;margin-top:18px}
.dm-foot .links-fr a{background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--text-dim);padding:7px 16px;border-radius:14px;font-size:12px;font-weight:600}
.dm-foot .links-fr a:hover{background:var(--gradient-1);color:#fff;border-color:transparent}
.dm-foot .end-fr{margin-top:28px;color:#4a4a5f;font-size:11px;display:flex;justify-content:space-between;letter-spacing:1px}

@media(max-width:980px){
  .feature-hero h1{font-size:42px}
  .hero-feed{grid-template-columns:1fr 1fr}
  .phone-grid{grid-template-columns:repeat(3,1fr)}
  .dm-faq{grid-template-columns:1fr}
  .sec-h h2{font-size:24px}
}

.essay-title-link{color:inherit;text-decoration:none}
.essay-title-link:hover{text-decoration:underline}