@charset "UTF-8";

:root {
  --bg: #0b0a1c;
  --bg-2: #100e24;
  --panel: #16132c;
  --panel-2: #1d1938;
  --ink: #f0edfb;
  --muted: #a49fc0;
  --line: #2a2547;
  --violet: #8b5cf6;
  --pink: #ff5fa2;
  --yellow: #ffd23f;
  --shell: 1180px;
  --header-height: 72px;
  --mono: "JetBrains Mono", Consolas, "Courier New", monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-height) + 18px); }
body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { color: inherit; font: inherit; }
svg { display: block; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid var(--yellow); outline-offset: 4px; }
.page-shell { width: min(calc(100% - 48px), var(--shell)); margin: 0 auto; }
.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  color: var(--pink);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  line-height: 1.4;
}
.eyebrow::before { width: 16px; height: 2px; content: ""; background: currentColor; }

/* header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  border-bottom: 1px solid var(--line);
  background: rgba(11, 10, 28, .94);
  backdrop-filter: blur(14px);
}
.nav-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(calc(100% - 48px), var(--shell));
  min-height: var(--header-height);
  margin: 0 auto;
  gap: 18px;
}
.brand { display: inline-flex; align-items: center; flex: none; gap: 10px; font-size: 21px; font-weight: 900; letter-spacing: -.4px; }
.brand img { width: 38px; height: 38px; border: 1px solid var(--line); border-radius: 12px; object-fit: contain; background: #fff; }
.brand-tag {
  padding: 2px 7px;
  border: 1px solid var(--violet);
  border-radius: 999px;
  color: #c9b4ff;
  font-size: 9px;
  font-style: normal;
  font-weight: 700;
  letter-spacing: 1px;
  line-height: 1.6;
}
.primary-nav { margin-left: auto; }
.primary-nav ul { display: flex; align-items: center; gap: clamp(12px, 1.9vw, 26px); padding: 0; margin: 0; list-style: none; }
.primary-nav a { display: block; padding: 7px 0; color: #c4bfda; font-size: 13px; font-weight: 700; }
.primary-nav a:hover { color: var(--yellow); }
.nav-actions { display: flex; align-items: center; flex: none; gap: 10px; }
.nav-download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  gap: 8px;
  padding: 0 16px;
  border: 1px solid transparent;
  border-radius: 10px;
  background: linear-gradient(120deg, var(--violet), var(--pink));
  color: #fff;
  font-size: 13px;
  font-weight: 800;
  white-space: nowrap;
  transition: transform .18s ease, filter .18s ease;
}
.nav-download:hover { transform: translateY(-1px); filter: brightness(1.08); }
.nav-download svg, .button svg { width: 18px; height: 18px; flex: none; fill: none; stroke: currentColor; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; }
.menu-toggle { display: none; width: 42px; height: 42px; padding: 0; border: 1px solid var(--line); border-radius: 10px; background: transparent; cursor: pointer; }
.menu-toggle span { display: block; width: 18px; height: 2px; margin: 5px auto; background: var(--ink); transition: transform .18s ease; }
.menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(3.5px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3.5px) rotate(-45deg); }

/* hero: poster backdrop with copy and live topic card */
.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background: #0a0918;
}
.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 24%;
  opacity: .5;
}
.hero::before {
  position: absolute;
  inset: 0;
  z-index: 1;
  content: "";
  background:
    linear-gradient(100deg, rgba(9, 8, 22, .96) 22%, rgba(9, 8, 22, .82) 52%, rgba(9, 8, 22, .55) 100%),
    radial-gradient(620px 380px at 88% 12%, rgba(139, 92, 246, .34), transparent 66%);
}
.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 314px;
  align-items: center;
  gap: clamp(30px, 4.4vw, 60px);
  padding: 66px 0 60px;
}
.hero-copy { min-width: 0; }
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 16px;
  padding: 4px 12px;
  border: 1px solid rgba(255, 95, 162, .45);
  border-radius: 999px;
  background: rgba(255, 95, 162, .1);
  color: #ffb3d1;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.4px;
}
.hero-kicker::before { width: 6px; height: 6px; content: ""; border-radius: 50%; background: var(--pink); }
.hero h1 {
  margin: 0;
  font-size: clamp(52px, 7vw, 92px);
  font-weight: 900;
  letter-spacing: clamp(-2px, -.4vw, -3px);
  line-height: 1;
}
.hero-subtitle {
  margin: 16px 0 0;
  color: var(--yellow);
  font-size: clamp(17px, 2vw, 23px);
  font-weight: 800;
  line-height: 1.45;
}
.hero-lead { max-width: 560px; margin: 14px 0 0; color: #c4bfda; font-size: 14.5px; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 18px; margin-top: 24px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  gap: 14px;
  padding: 0 26px;
  border: 1px solid transparent;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 900;
  transition: transform .18s ease, filter .18s ease;
}
.button-primary { background: linear-gradient(120deg, var(--violet), var(--pink)); color: #fff; box-shadow: 0 14px 28px rgba(139, 92, 246, .3); }
.button-primary:hover { transform: translateY(-2px); filter: brightness(1.08); }
.button-large { min-height: 54px; padding: 0 32px; font-size: 15px; }
.text-link { color: #d9d4ea; border-bottom: 1px dashed #5b5680; font-size: 13px; font-weight: 800; }
.text-link span { display: inline-block; margin-left: 5px; color: var(--yellow); }

.channel-bar {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  padding: 0;
  margin: 32px 0 0;
  list-style: none;
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  background: var(--line);
  max-width: 560px;
}
.channel-bar li { padding: 11px 14px; background: rgba(22, 19, 44, .88); }
.channel-bar b { display: block; font-size: 13px; font-weight: 900; }
.channel-bar span { display: block; color: var(--muted); font-size: 10.5px; }

.hot-card {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(19, 16, 38, .92);
  backdrop-filter: blur(8px);
  box-shadow: 0 22px 44px rgba(0, 0, 0, .4);
}
.hot-head { display: flex; align-items: baseline; justify-content: space-between; margin: 0 0 8px; padding-bottom: 10px; border-bottom: 1px dashed var(--line); }
.hot-head span { font-size: 12px; font-weight: 800; letter-spacing: 1px; }
.hot-head b { color: var(--pink); font-family: var(--mono); font-size: 11px; }
.hot-card ul { padding: 0; margin: 0; list-style: none; }
.hot-card li { display: flex; align-items: center; gap: 11px; padding: 9px 0; border-bottom: 1px solid rgba(42, 37, 71, .7); }
.hot-card li:last-child { border-bottom: 0; }
.hot-card em { color: #6c6690; font-family: var(--mono); font-size: 10px; font-style: normal; }
.hot-card strong { display: block; font-size: 13px; font-weight: 800; line-height: 1.4; }
.hot-card li span { display: block; color: var(--muted); font-size: 10.5px; }
.hot-foot { margin: 10px 0 0; color: #6c6690; font-size: 10px; }

/* features */
.features { padding: 72px 0 78px; background: var(--bg-2); border-bottom: 1px solid var(--line); }
.section-heading { margin-bottom: 30px; }
.section-heading h2, .download h2 { margin: 0; font-size: clamp(25px, 2.9vw, 36px); font-weight: 900; letter-spacing: -.8px; line-height: 1.3; }
.section-heading > p:last-child { max-width: 620px; margin: 12px 0 0; color: var(--muted); font-size: 14px; }
.section-heading-split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(230px, 320px); align-items: end; gap: 28px; }
.section-heading-split > p:last-child { margin: 0 0 5px; }
.feature-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.feature-card { padding: 24px 20px; border: 1px solid var(--line); border-radius: 12px; background: var(--panel); }
.feature-card:nth-child(2),
.feature-card:nth-child(4) { transform: translateY(18px); }
.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  margin-bottom: 14px;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(139, 92, 246, .3), rgba(255, 95, 162, .28));
  color: #fff;
  font-size: 15px;
  font-weight: 900;
}
.feature-card h3 { margin: 0 0 8px; font-size: 16px; font-weight: 900; }
.feature-card p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.8; }

/* posters */
.shots { padding: 72px 0 78px; }
.poster-row { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; align-items: start; }
.poster-card { margin: 0; border: 1px solid var(--line); border-radius: 10px; background: var(--panel); overflow: hidden; }
.poster-card img { width: 100%; height: auto; aspect-ratio: 3 / 4; object-fit: cover; object-position: center 20%; }
.poster-card:nth-child(1) img { object-position: center 12%; }
.poster-card figcaption { display: flex; align-items: baseline; gap: 9px; padding: 12px 13px; border-top: 1px solid var(--line); }
.poster-card figcaption b { color: var(--violet); font-family: var(--mono); font-size: 10px; }
.poster-card figcaption span { display: flex; flex-direction: column; font-size: 13px; font-weight: 800; line-height: 1.4; }
.poster-card figcaption small { color: var(--muted); font-size: 10.5px; font-weight: 500; }

/* faq */
.faq { padding: 70px 0 76px; background: var(--bg-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.faq-layout { display: grid; grid-template-columns: minmax(0, 320px) minmax(0, 1fr); align-items: start; gap: clamp(26px, 4.6vw, 58px); }
.faq-heading { position: sticky; top: calc(var(--header-height) + 24px); margin: 0; }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 17px 2px; cursor: pointer; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary h3 { margin: 0; font-size: 14.5px; font-weight: 800; line-height: 1.55; }
.faq-list summary i { position: relative; flex: none; width: 19px; height: 19px; border: 1px solid #3f3a63; border-radius: 50%; }
.faq-list summary i::before, .faq-list summary i::after {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 8px;
  height: 1.5px;
  content: "";
  background: var(--yellow);
  transform: translate(-50%, -50%);
}
.faq-list summary i::after { transform: translate(-50%, -50%) rotate(90deg); transition: transform .2s ease; }
.faq-list details[open] summary i::after { transform: translate(-50%, -50%) rotate(0); }
.faq-list details p { padding: 0 30px 18px 2px; margin: 0; color: var(--muted); font-size: 13.5px; line-height: 1.85; }

/* reviews */
.reviews { padding: 72px 0 78px; }
.review-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; padding: 0; margin: 0; list-style: none; }
.review-card { padding: 20px; border: 1px solid var(--line); border-radius: 12px; background: var(--panel); }
.review-meta { display: flex; align-items: baseline; justify-content: space-between; flex-wrap: wrap; gap: 6px; padding-bottom: 9px; margin-bottom: 9px; border-bottom: 1px dashed var(--line); }
.review-meta b { color: #c9b4ff; font-size: 13px; font-weight: 900; }
.review-meta time { color: #7b7599; font-family: var(--mono); font-size: 10px; }
.review-card p { margin: 0; color: #c4bfda; font-size: 13px; line-height: 1.8; }

/* steps */
.steps { padding: 68px 0 74px; border-top: 1px solid var(--line); background: var(--bg-2); }
.step-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; padding: 0; margin: 0; list-style: none; }
.step-list li { position: relative; padding: 24px 22px 22px; border: 1px solid var(--line); border-radius: 12px; background: var(--panel); }
.step-list span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  margin-bottom: 12px;
  border-radius: 8px;
  background: rgba(255, 210, 63, .14);
  color: var(--yellow);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
}
.step-list h3 { margin: 0 0 7px; font-size: 17px; font-weight: 900; }
.step-list p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.8; }

/* download */
.download { padding: 24px 0; }
.download-inner {
  position: relative;
  overflow: hidden;
  padding: 52px clamp(24px, 5vw, 60px) 46px;
  border-radius: 14px;
  border: 1px solid rgba(139, 92, 246, .4);
  background:
    radial-gradient(520px 280px at 92% 0%, rgba(255, 95, 162, .3), transparent 68%),
    linear-gradient(120deg, #1b1440, #140f2e 62%, #1d1236);
}
.download .eyebrow { color: var(--yellow); }
.download h2 { max-width: 600px; color: #fff; }
.download-inner > p { max-width: 520px; margin: 13px 0 24px; color: #c4bfda; font-size: 14px; }
.download-notes { display: flex; flex-wrap: wrap; gap: 8px 22px; padding: 22px 0 0; margin: 28px 0 0; border-top: 1px solid rgba(255, 255, 255, .14); list-style: none; }
.download-notes li { color: #a49fc0; font-family: var(--mono); font-size: 11px; }
.download-notes li::before { margin-right: 8px; color: var(--pink); content: "/"; }

/* footer */
.site-footer { padding: 44px 0 52px; border-top: 1px solid var(--line); }
.footer-grid { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 20px 40px; align-items: start; }
.footer-brand strong { font-size: 18px; font-weight: 900; }
.footer-brand p { margin: 4px 0 0; color: var(--muted); font-size: 12px; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 8px 22px; }
.footer-nav a { color: #c4bfda; font-size: 12px; }
.footer-nav a:hover { color: var(--pink); }
.footer-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 20px; margin-top: 24px; padding-top: 18px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }
.footer-meta p { margin: 0; }
.footer-meta a { color: var(--muted); }
.disclaimer { grid-column: 1 / -1; margin: 0; color: #7b7599; font-size: 11.5px; line-height: 1.8; }

/* responsive */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: minmax(0, 1fr) 280px; gap: 26px; }
  .feature-card:nth-child(2), .feature-card:nth-child(4) { transform: none; }
}
@media (max-width: 900px) {
  .menu-toggle { display: block; }
  .primary-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    padding: 8px 24px 16px;
    border-bottom: 1px solid var(--line);
    background: var(--bg);
    box-shadow: 0 16px 26px rgba(0, 0, 0, .5);
  }
  .primary-nav.is-open { display: block; }
  .primary-nav ul { flex-direction: column; align-items: stretch; gap: 0; }
  .primary-nav a { padding: 12px 0; border-bottom: 1px solid var(--line); }
  .hero-inner { grid-template-columns: 1fr; padding: 40px 0 44px; }
  .hot-card { max-width: 420px; }
  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .poster-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .faq-layout { grid-template-columns: 1fr; }
  .faq-heading { position: static; }
  .review-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .step-list { grid-template-columns: 1fr; }
  .section-heading-split { grid-template-columns: 1fr; gap: 8px; }
  .footer-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .page-shell, .nav-shell { width: calc(100% - 32px); }
  .brand { font-size: 18px; }
  .brand-tag { display: none; }
  .nav-download { min-height: 38px; padding: 0 11px; font-size: 12px; }
  .hero h1 { font-size: clamp(44px, 14vw, 60px); }
  .hero-lead { font-size: 13.5px; }
  .channel-bar { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .features, .shots, .faq, .reviews, .steps { padding: 46px 0 50px; }
  .poster-row { gap: 10px; }
  .review-list { grid-template-columns: 1fr; }
  .download-inner { padding: 34px 20px 30px; }
  .download-notes { gap: 6px 16px; }
  .footer-nav { gap: 8px 16px; }
}
@media (max-width: 380px) {
  .brand { font-size: 16px; gap: 7px; }
  .brand img { width: 30px; height: 30px; }
  .nav-shell { gap: 8px; }
  .nav-actions { gap: 6px; }
  .nav-download { min-height: 34px; padding: 0 8px; gap: 5px; font-size: 10.5px; }
  .nav-download svg { width: 14px; height: 14px; }
  .menu-toggle { width: 34px; height: 34px; }
  .feature-grid { gap: 10px; }
  .feature-card { padding: 18px 15px; }
  .poster-card figcaption { padding: 10px 11px; }
}