:root{
  --bg:#0d0e12;
  --bg-soft:#14161c;
  --bg-card:#1a1d25;
  --line:#272b35;
  --text:#eef0f4;
  --text-dim:#9aa1ad;
  --text-mute:#6b7280;
  --green:#4fd18b;
  --pink:#ff5f8f;
  --red:#e0364f;
  --radius-s:8px;
  --radius-m:16px;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  background-image:radial-gradient(rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:4px 4px;
}
img{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
.wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 20px;}

/* header */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(13,14,18,.86);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:62px;}
.brand{display:flex;align-items:center;gap:10px;}
.brand img{height:32px;width:auto;border-radius:6px;}
.brand span{font-size:18px;font-weight:700;letter-spacing:.5px;}
.nav{display:flex;gap:26px;font-size:14px;color:var(--text-dim);}
.nav a{transition:color .2s;}
.nav a:hover{color:var(--text);}
.header-cta{
  font-size:14px;font-weight:600;padding:9px 18px;border-radius:999px;
  background:linear-gradient(90deg,var(--green),#7ce6ae);color:#06281a;
  white-space:nowrap;
}
.nav-toggle{display:none;background:none;border:none;color:var(--text);font-size:22px;cursor:pointer;}

/* hero */
.hero{position:relative;padding:64px 0 72px;overflow:hidden;}
.hero-grid{display:grid;grid-template-columns:1fr;gap:44px;align-items:center;}
.hero-copy h1{font-size:34px;line-height:1.3;font-weight:800;letter-spacing:.5px;}
.hero-copy h1 em{
  font-style:normal;
  background:linear-gradient(90deg,var(--green),#c9f6dd 40%,#ffc0d2 70%,var(--pink));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-copy p{margin-top:18px;color:var(--text-dim);font-size:16px;max-width:520px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.hero-tags span{
  font-size:13px;color:var(--text-dim);
  border:1px solid var(--line);border-radius:999px;padding:6px 14px;
  background:var(--bg-soft);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.btn-main{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 30px;border-radius:999px;
  font-size:16px;font-weight:700;color:#06281a;
  background:linear-gradient(100deg,var(--green),#8beab8 55%,#ffd0dd);
  box-shadow:0 10px 30px rgba(79,209,139,.22);
  transition:transform .2s;
}
.btn-main:hover{transform:translateY(-2px);}
.btn-ghost{
  display:inline-flex;align-items:center;
  padding:14px 26px;border-radius:999px;
  font-size:15px;color:var(--text-dim);
  border:1px solid var(--line);
  transition:border-color .2s,color .2s;
}
.btn-ghost:hover{border-color:#3d4350;color:var(--text);}

/* arc visual */
.arc-visual{
  position:relative;width:100%;max-width:430px;margin:0 auto;
  aspect-ratio:1/1;
  display:flex;align-items:center;justify-content:center;
  isolation:isolate;
}
.arc-ring{
  position:absolute;border-radius:50%;
}
.arc-r1{
  width:100%;height:100%;
  background:conic-gradient(from 210deg,#4fd18b,#bff6d8,#ffffff,#ffd3df,#ff5f8f,#e0364f,#ff5f8f,#ffd3df,#ffffff,#bff6d8,#4fd18b);
  filter:blur(2px);
  mask:radial-gradient(circle,transparent 58%,#000 59%,#000 72%,transparent 73%);
  -webkit-mask:radial-gradient(circle,transparent 58%,#000 59%,#000 72%,transparent 73%);
  opacity:.9;
  animation:spin 26s linear infinite;
}
.arc-r2{
  width:72%;height:72%;
  background:conic-gradient(from 180deg,rgba(79,209,139,.55),rgba(255,255,255,.7),rgba(255,95,143,.6),rgba(224,54,79,.6),rgba(255,95,143,.6),rgba(255,255,255,.7),rgba(79,209,139,.55));
  filter:blur(14px);
  mask:radial-gradient(circle,transparent 52%,#000 54%,#000 68%,transparent 70%);
  -webkit-mask:radial-gradient(circle,transparent 52%,#000 54%,#000 68%,transparent 70%);
  opacity:.55;
}
.arc-core{
  position:relative;width:34%;height:34%;border-radius:50%;
  background:radial-gradient(circle at 35% 30%,#1f232c,#0d0e12 70%);
  border:1px solid #333845;
  display:flex;align-items:center;justify-content:center;
  box-shadow:inset 0 0 34px rgba(0,0,0,.9),0 0 40px rgba(255,95,143,.18);
}
.play-tri{
  width:0;height:0;
  border-left:22px solid #fff;
  border-top:14px solid transparent;
  border-bottom:14px solid transparent;
  margin-left:6px;
  filter:drop-shadow(0 0 10px rgba(255,255,255,.7));
}
@keyframes spin{to{transform:rotate(360deg);}}

/* section base */
section{padding:64px 0;}
.sec-head{margin-bottom:34px;}
.sec-kicker{
  font-size:13px;letter-spacing:3px;color:var(--green);
  text-transform:uppercase;margin-bottom:10px;font-weight:600;
}
.sec-head h2{font-size:26px;font-weight:800;line-height:1.35;}
.sec-head p{margin-top:10px;color:var(--text-dim);font-size:15px;max-width:640px;}

/* grid cards */
.poster-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:14px;
}
.poster-card{
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--radius-s);
  overflow:hidden;
  transition:transform .25s,border-color .25s;
}
.poster-card:hover{transform:translateY(-4px);border-color:#3b4150;}
.poster-thumb{
  position:relative;aspect-ratio:3/4;overflow:hidden;background:#22262f;
}
.poster-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s;}
.poster-card:hover .poster-thumb img{transform:scale(1.05);}
.poster-meta{padding:12px 12px 14px;}
.poster-meta h3{font-size:14px;font-weight:700;line-height:1.4;}
.poster-meta span{display:block;margin-top:6px;font-size:12px;color:var(--text-mute);}

/* tilted feature */
.feature-band{
  display:grid;grid-template-columns:1fr;gap:26px;
}
.tilt-card{
  position:relative;
  background:linear-gradient(160deg,#1b1f28,#12141a);
  border:1px solid var(--line);
  border-radius:40px 8px 40px 8px;
  padding:26px;
  overflow:hidden;
  transform:rotate(-1.2deg);
}
.tilt-card.second{transform:rotate(1.2deg);border-radius:8px 40px 8px 40px;}
.tilt-card .circle-shot{
  width:100%;aspect-ratio:16/10;border-radius:50% 50% 46% 46%/40% 40% 60% 60%;
  overflow:hidden;margin-bottom:18px;
}
.tilt-card .circle-shot img{width:100%;height:100%;object-fit:cover;}
.tilt-card h3{font-size:19px;margin-bottom:8px;}
.tilt-card p{color:var(--text-dim);font-size:14px;}

/* topic masonry-ish */
.topic-row{
  display:grid;grid-template-columns:1fr;gap:16px;
}
.topic-block{
  display:flex;gap:16px;align-items:center;
  background:var(--bg-soft);
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  padding:14px;
  transition:background .2s;
}
.topic-block:hover{background:#191c23;}
.topic-block img{
  width:88px;height:88px;flex:0 0 88px;
  object-fit:cover;
  border-radius:50% 50% 18px 50%;
}
.topic-block:nth-child(even) img{border-radius:18px 50% 50% 50%;}
.topic-block h3{font-size:16px;margin-bottom:4px;}
.topic-block p{font-size:13px;color:var(--text-dim);}

/* highlights */
.hl-grid{display:grid;grid-template-columns:1fr;gap:16px;}
.hl-item{
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  padding:22px;
  border-left:3px solid var(--green);
}
.hl-item:nth-child(2n){border-left-color:var(--pink);}
.hl-item:nth-child(3n){border-left-color:#8f7cff;}
.hl-item h3{font-size:17px;margin-bottom:8px;}
.hl-item p{font-size:14px;color:var(--text-dim);}

/* reviews */
.review-grid{display:grid;grid-template-columns:1fr;gap:16px;}
.review-card{
  background:var(--bg-soft);
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  padding:22px;
}
.review-card p{font-size:15px;color:#c7ccd6;}
.review-card span{
  display:block;margin-top:14px;font-size:13px;color:var(--text-mute);
}

/* faq */
.faq-list{display:grid;gap:12px;}
.faq-item{
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--radius-s);
  padding:18px 20px;
}
.faq-item h3{font-size:16px;margin-bottom:8px;color:#fff;}
.faq-item p{font-size:14px;color:var(--text-dim);}

/* download */
.download{
  position:relative;
  background:
    radial-gradient(600px 300px at 15% 20%,rgba(79,209,139,.16),transparent 65%),
    radial-gradient(600px 300px at 85% 80%,rgba(255,95,143,.18),transparent 65%),
    #12141a;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.download-inner{text-align:center;max-width:700px;margin:0 auto;}
.download-inner h2{font-size:28px;font-weight:800;}
.download-inner p{margin-top:14px;color:var(--text-dim);font-size:15px;}
.download .btn-main{margin-top:28px;font-size:17px;padding:16px 38px;}

/* footer */
.site-footer{padding:38px 0 46px;background:#0a0b0e;border-top:1px solid var(--line);}
.footer-inner{
  display:flex;flex-direction:column;gap:10px;
  font-size:12.5px;color:var(--text-mute);
  align-items:center;text-align:center;
}
.footer-inner a{color:var(--text-mute);}
.footer-inner a:hover{color:var(--text-dim);}
.footer-line{line-height:1.7;}

/* screen wall */
.wall{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;}
.wall img{
  width:100%;aspect-ratio:3/4;object-fit:cover;
  border-radius:6px;border:1px solid var(--line);
}

/* responsive */
@media (min-width:768px){
  .hero{padding:80px 0 90px;}
  .hero-copy h1{font-size:44px;}
  .poster-grid{grid-template-columns:repeat(3,1fr);gap:18px;}
  .feature-band{grid-template-columns:1fr 1fr;}
  .topic-row{grid-template-columns:1fr 1fr;}
  .hl-grid{grid-template-columns:1fr 1fr;}
  .review-grid{grid-template-columns:1fr 1fr;}
  .wall{grid-template-columns:repeat(4,1fr);}
  .sec-head h2{font-size:30px;}
  .download-inner h2{font-size:34px;}
}
@media (min-width:1024px){
  .hero-grid{grid-template-columns:1.05fr .95fr;gap:60px;}
  .hero-copy h1{font-size:50px;}
  .arc-visual{max-width:480px;}
  .poster-grid{grid-template-columns:repeat(4,1fr);}
  .topic-row{grid-template-columns:repeat(2,1fr);}
  .hl-grid{grid-template-columns:repeat(3,1fr);}
  .review-grid{grid-template-columns:repeat(3,1fr);}
  .wall{grid-template-columns:repeat(5,1fr);}
  .nav{display:flex;}
}
@media (max-width:767px){
  .nav{display:none;}
  .nav-toggle{display:block;}
  .header-cta{display:none;}
  .nav.open{
    display:flex;position:absolute;top:62px;left:0;right:0;
    flex-direction:column;gap:0;
    background:#12141a;border-bottom:1px solid var(--line);
    padding:8px 20px 16px;
  }
  .nav.open a{padding:10px 0;border-bottom:1px solid #1e222b;}
}