:root{
  --bg:#0f1410;
  --bg-soft:#161d17;
  --card:#1c251d;
  --line:#2c3a2e;
  --text:#eef3ee;
  --muted:#9fb0a1;
  --green:#8fd14f;
  --green-deep:#5da42a;
  --radius:14px;
  --max:1120px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  line-height:1.7;
  font-size:16px;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{width:100%;max-width:var(--max);margin:0 auto;padding:0 20px}

/* header */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(15,20,16,.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;letter-spacing:.5px}
.brand img{height:34px;width:auto;border-radius:8px}
.nav-links{display:none;gap:26px;font-size:15px;color:var(--muted)}
.nav-links a:hover{color:var(--green)}
.btn{
  display:inline-block;padding:11px 22px;border-radius:999px;
  background:linear-gradient(135deg,var(--green),var(--green-deep));
  color:#0d1608;font-weight:700;font-size:15px;
  transition:transform .18s ease,box-shadow .18s ease;
  box-shadow:0 6px 20px rgba(143,209,79,.22);
}
.btn:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(143,209,79,.32)}
.btn-ghost{
  background:transparent;color:var(--green);border:1px solid var(--green-deep);box-shadow:none;
}

/* hero */
.hero{position:relative;padding:56px 0 64px;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(620px 340px at 82% 8%,rgba(143,209,79,.16),transparent 70%),
    radial-gradient(520px 320px at 6% 92%,rgba(93,164,42,.14),transparent 70%);
  pointer-events:none;
}
.hero-grid{position:relative;display:grid;gap:40px}
.hero-copy h1{font-size:32px;line-height:1.3;letter-spacing:.5px}
.hero-copy h1 em{font-style:normal;color:var(--green)}
.hero-copy .lead{margin-top:18px;color:var(--muted);font-size:16px;max-width:520px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.tag{
  font-size:13px;padding:6px 14px;border-radius:999px;
  background:var(--bg-soft);border:1px solid var(--line);color:var(--muted);
}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:28px}
.hero-note{font-size:13px;color:var(--muted)}

.hero-phone{
  justify-self:center;width:min(280px,80vw);
  border:1px solid var(--line);border-radius:26px;padding:10px;
  background:linear-gradient(180deg,#1f2a21,#131a14);
  box-shadow:0 24px 60px rgba(0,0,0,.5);
}
.hero-phone img{border-radius:18px;aspect-ratio:3/4;object-fit:cover;width:100%}

/* section base */
section{padding:64px 0}
.sec-head{max-width:640px;margin-bottom:34px}
.sec-head h2{font-size:26px;line-height:1.35}
.sec-head h2 span{color:var(--green)}
.sec-head p{margin-top:12px;color:var(--muted);font-size:15px}

/* overview */
.overview-grid{display:grid;gap:18px}
.ov-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 20px;
}
.ov-card h3{font-size:17px;margin-bottom:8px;color:var(--green)}
.ov-card p{color:var(--muted);font-size:15px}

/* genres / covers */
.cover-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.cover-item{
  position:relative;border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--line);background:var(--card);
}
.cover-item img{width:100%;aspect-ratio:3/4;object-fit:cover;transition:transform .35s ease}
.cover-item:hover img{transform:scale(1.04)}
.cover-cap{
  padding:10px 12px;font-size:13px;color:var(--muted);
  border-top:1px solid var(--line);
}

/* ranking */
.rank-list{display:grid;gap:14px}
.rank-item{
  display:grid;grid-template-columns:56px 1fr;gap:16px;align-items:center;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:14px 18px;
}
.rank-no{
  font-size:20px;font-weight:800;color:var(--green-deep);
  text-align:center;
}
.rank-body strong{display:block;font-size:16px}
.rank-body span{font-size:14px;color:var(--muted)}

/* features */
.feature-grid{display:grid;gap:18px}
.feature{
  background:var(--bg-soft);border:1px solid var(--line);
  border-radius:var(--radius);padding:24px 22px;
}
.feature .num{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;margin-bottom:14px;
  background:rgba(143,209,79,.14);color:var(--green);font-weight:800;font-size:15px;
}
.feature h3{font-size:17px;margin-bottom:8px}
.feature p{font-size:15px;color:var(--muted)}

/* how to */
.steps{display:grid;gap:16px;counter-reset:step}
.step{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);padding:20px;
}
.step::before{
  counter-increment:step;content:counter(step);
  flex:0 0 auto;width:32px;height:32px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--green);color:#0d1608;font-weight:800;font-size:15px;
}
.step div strong{display:block;font-size:16px;margin-bottom:4px}
.step div p{font-size:15px;color:var(--muted)}

/* reviews */
.review-grid{display:grid;gap:18px}
.review{
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);padding:22px;
}
.review .stars{color:var(--green);font-size:14px;letter-spacing:2px;margin-bottom:10px}
.review p{font-size:15px;color:#d7e2d8}
.review .who{margin-top:14px;font-size:13px;color:var(--muted)}

/* download */
.cta-band{
  background:linear-gradient(135deg,#1d2a1c,#141c15);
  border:1px solid var(--line);border-radius:22px;
  padding:40px 24px;text-align:center;
}
.cta-band h2{font-size:26px;margin-bottom:14px}
.cta-band p{color:var(--muted);max-width:520px;margin:0 auto 26px;font-size:15px}

/* footer */
.site-footer{
  border-top:1px solid var(--line);
  padding:32px 0 40px;background:#0b100c;
  font-size:13px;color:#7f8f81;
}
.footer-inner{display:grid;gap:12px;text-align:center}
.footer-inner p{line-height:1.8}
.site-footer a{color:#8ea290}
.site-footer a:hover{color:var(--green)}
.update-time{font-size:12px;color:#6b7a6d}

@media (min-width:768px){
  .hero{padding:80px 0 90px}
  .hero-copy h1{font-size:42px}
  .hero-grid{grid-template-columns:1.15fr .85fr;align-items:center;gap:48px}
  .hero-phone{width:100%}
  .overview-grid{grid-template-columns:repeat(2,1fr)}
  .cover-grid{grid-template-columns:repeat(3,1fr)}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .review-grid{grid-template-columns:repeat(2,1fr)}
  .sec-head h2{font-size:30px}
}

@media (min-width:1024px){
  .nav-links{display:flex}
  .hero-copy h1{font-size:50px}
  .overview-grid{grid-template-columns:repeat(4,1fr)}
  .cover-grid{grid-template-columns:repeat(5,1fr)}
  .feature-grid{grid-template-columns:repeat(3,1fr)}
  .review-grid{grid-template-columns:repeat(3,1fr)}
  .steps{grid-template-columns:repeat(3,1fr)}
  .step{flex-direction:column}
  section{padding:84px 0}
}