@charset "UTF-8";

:root {
  --bg: #12161C;
  --panel: #18212A;
  --panel-2: #1E2831;
  --line: #27333D;
  --ink: #E9F2EF;
  --muted: #90A3A9;
  --teal: #31D0AA;
  --teal-deep: #1FA98A;
  --shell: 1180px;
  --header-height: 68px;
  --mono: "JetBrains Mono", Consolas, "Courier New", monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-height) + 16px); }
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: 1.75;
}
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(--teal); outline-offset: 4px; }
.page-shell { width: min(calc(100% - 44px), var(--shell)); margin: 0 auto; }

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 12px;
  color: var(--teal);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2.4px;
}
.eyebrow::before { width: 18px; height: 1px; content: ""; background: currentColor; }

/* header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  border-bottom: 1px solid var(--line);
  background: rgba(18, 22, 28, .94);
  backdrop-filter: blur(12px);
}
.nav-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(calc(100% - 44px), var(--shell));
  min-height: var(--header-height);
  margin: 0 auto;
  gap: 18px;
}
.brand { display: inline-flex; align-items: center; flex: none; gap: 9px; font-size: 21px; font-weight: 900; letter-spacing: -.2px; }
.brand img { width: 36px; height: 36px; border: 1px solid var(--line); border-radius: 50%; object-fit: cover; background: #0D1116; }
.brand-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 3px;
  background: var(--teal);
  color: #06221B;
  font-size: 10px;
  font-style: normal;
  font-weight: 900;
}
.primary-nav { margin-left: auto; }
.primary-nav ul { display: flex; align-items: center; gap: clamp(12px, 1.9vw, 24px); padding: 0; margin: 0; list-style: none; }
.primary-nav a { display: block; padding: 6px 0; border-bottom: 2px solid transparent; color: #A9B8BD; font-size: 13px; font-weight: 700; }
.primary-nav a:hover { border-bottom-color: var(--teal); color: #fff; }
.nav-actions { display: flex; align-items: center; flex: none; gap: 10px; }
.nav-download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  gap: 7px;
  padding: 0 17px;
  border: 1px solid var(--teal);
  border-radius: 6px;
  background: var(--teal);
  color: #06221B;
  font-size: 13px;
  font-weight: 900;
  white-space: nowrap;
}
.nav-download:hover { background: transparent; color: var(--teal); }
.nav-download svg, .button svg { width: 17px; height: 17px; flex: none; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.menu-toggle { display: none; width: 40px; height: 40px; padding: 0; border: 1px solid var(--line); border-radius: 6px; background: transparent; cursor: pointer; }
.menu-toggle span { display: block; width: 17px; 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 */
.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(620px 380px at 92% -10%, rgba(49, 208, 170, .18), transparent 72%),
    radial-gradient(420px 320px at 4% 100%, rgba(49, 208, 170, .07), transparent 70%),
    linear-gradient(180deg, #151C23 0%, var(--bg) 100%);
}
.hero::before {
  position: absolute;
  inset: 0;
  content: "";
  background-image:
    linear-gradient(rgba(49, 208, 170, .07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(49, 208, 170, .07) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(600px 420px at 70% 10%, #000, transparent 78%);
  pointer-events: none;
}
.hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(300px, .98fr);
  align-items: center;
  gap: clamp(26px, 4vw, 56px);
  padding: 56px 0 34px;
}
.hero-copy { min-width: 0; }
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 16px;
  color: #9FB2B7;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 1.8px;
}
.hero-kicker b {
  padding: 3px 7px;
  border-radius: 3px;
  background: rgba(49, 208, 170, .16);
  color: var(--teal);
  font-size: 9.5px;
  font-weight: 900;
  letter-spacing: 1.4px;
}
.hero h1 {
  margin: 0;
  font-family: var(--mono);
  font-size: clamp(56px, 9vw, 108px);
  font-weight: 900;
  letter-spacing: clamp(-4px, -.7vw, -7px);
  line-height: .96;
}
.hero-subtitle {
  margin: 14px 0 0;
  color: var(--teal);
  font-size: clamp(18px, 2.1vw, 24px);
  font-weight: 800;
  line-height: 1.4;
}
.hero-lead { max-width: 490px; margin: 12px 0 0; color: var(--muted); font-size: 14.5px; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 18px; margin-top: 26px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  gap: 12px;
  padding: 0 26px;
  border: 1px solid transparent;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 900;
  transition: background .18s ease, color .18s ease, transform .18s ease;
}
.button-primary { background: var(--teal); color: #06221B; }
.button-primary:hover { background: #55E4C1; transform: translateY(-2px); }
.button-large { min-height: 52px; padding: 0 32px; font-size: 15px; }
.text-link { color: #B9C7CB; border-bottom: 1px dashed #43565E; font-size: 13px; font-weight: 700; }
.text-link span { display: inline-block; margin-left: 4px; color: var(--teal); }

.search-panel {
  position: relative;
  width: 100%;
  max-width: 380px;
  justify-self: end;
  padding: 0 0 10px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: linear-gradient(180deg, #1B232C, #151B22);
  box-shadow: 0 22px 40px rgba(0, 0, 0, .45);
  overflow: hidden;
}
.panel-chrome {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 9px 12px;
  border-bottom: 1px solid var(--line);
  background: #10161C;
}
.panel-chrome i { width: 7px; height: 7px; border-radius: 50%; background: #36434C; }
.panel-chrome i:first-child { background: var(--teal); }
.panel-chrome span { margin-left: auto; color: #6E8288; font-family: var(--mono); font-size: 9.5px; letter-spacing: .6px; }
.search-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 11px 12px 0;
  padding: 8px 8px 8px 11px;
  border: 1px solid #33424C;
  border-radius: 7px;
  background: #0E1419;
}
.search-bar svg { width: 15px; height: 15px; flex: none; fill: none; stroke: #6E8288; stroke-width: 2; }
.search-bar span { flex: 1; min-width: 0; overflow: hidden; color: #93A7AD; font-family: var(--mono); font-size: 11px; text-overflow: ellipsis; white-space: nowrap; }
.search-bar b { padding: 3px 9px; border-radius: 4px; background: rgba(49, 208, 170, .16); color: var(--teal); font-size: 10px; font-weight: 900; }
.hero-poster { position: relative; margin: 11px 12px 0; border: 1px solid #2C3943; border-radius: 7px; overflow: hidden; }
.hero-poster::after {
  position: absolute;
  inset: 0;
  content: "";
  background: linear-gradient(180deg, transparent 58%, #151B22 100%);
  pointer-events: none;
}
.hero-poster img { width: 100%; height: auto; aspect-ratio: 5 / 8; object-fit: cover; object-position: top center; }
.panel-foot { display: flex; justify-content: space-between; padding: 8px 14px 0; color: #7E9197; font-family: var(--mono); font-size: 9.5px; }

.tag-cloud {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 7px;
  padding: 0 0 40px;
  margin: 0;
  list-style: none;
}
.tag-cloud li {
  padding: 7px 6px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: rgba(24, 33, 42, .7);
  color: #A6B7BC;
  font-size: 11.5px;
  text-align: center;
  letter-spacing: .4px;
}
.tag-cloud li:nth-child(3n) { border-color: rgba(49, 208, 170, .38); color: var(--teal); }

/* features */
.features { padding: 68px 0 74px; border-bottom: 1px solid var(--line); background: #151B22; }
.section-heading { margin-bottom: 30px; }
.section-heading h2, .download h2 { margin: 0; font-size: clamp(24px, 2.7vw, 34px); font-weight: 900; letter-spacing: -.6px; line-height: 1.3; }
.section-heading > p:last-child { max-width: 620px; margin: 10px 0 0; color: var(--muted); font-size: 13.5px; }
.section-heading-split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(200px, 290px); align-items: end; gap: 24px; }
.section-heading-split > p:last-child { margin: 0 0 4px; }
.feature-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.feature-card {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 24px 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}
.feature-no {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid rgba(49, 208, 170, .34);
  border-radius: 50%;
  color: var(--teal);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
}
.feature-card h3 { margin: 0 0 6px; font-size: 17px; font-weight: 900; }
.feature-card p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.8; }

/* shots */
.shots { padding: 68px 0 74px; }
.poster-row { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.poster-card { margin: 0; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); overflow: hidden; }
.poster-card img { width: 100%; height: auto; aspect-ratio: 9 / 16; object-fit: cover; object-position: top center; }
.poster-card figcaption { display: flex; align-items: baseline; gap: 8px; padding: 10px 11px 11px; border-top: 1px solid var(--line); }
.poster-card figcaption b { color: var(--teal); font-family: var(--mono); font-size: 10px; }
.poster-card figcaption span { display: flex; flex-direction: column; font-size: 12.5px; font-weight: 800; line-height: 1.4; }
.poster-card figcaption small { color: var(--muted); font-size: 10px; font-weight: 500; }

/* faq */
.faq { padding: 66px 0 72px; border-top: 1px solid var(--line); background: #151B22; }
.faq-layout { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: clamp(24px, 4vw, 52px); }
.faq-heading { position: sticky; top: calc(var(--header-height) + 24px); align-self: start; }
.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: 14px; padding: 16px 0; cursor: pointer; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary h3 { margin: 0; font-size: 15px; font-weight: 900; }
.faq-list summary i { position: relative; flex: none; width: 22px; height: 22px; border: 1px solid #33424C; border-radius: 4px; }
.faq-list summary i::before,
.faq-list summary i::after {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 9px;
  height: 1.5px;
  content: "";
  background: var(--teal);
  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 26px 16px 0; margin: 0; color: var(--muted); font-size: 13.2px; line-height: 1.85; }

/* reviews */
.reviews { padding: 68px 0 74px; }
.review-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; padding: 0; margin: 0; list-style: none; }
.review-card { padding: 18px 18px 17px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); }
.review-meta { display: flex; flex-direction: column; gap: 3px; padding-bottom: 8px; margin-bottom: 9px; border-bottom: 1px dashed var(--line); }
.review-meta b { color: var(--teal); font-size: 12.5px; font-weight: 900; }
.review-meta time { color: #6E8288; font-family: var(--mono); font-size: 9.5px; }
.review-card p { margin: 0; color: #B7C6CA; font-size: 12.7px; line-height: 1.8; }

/* steps */
.steps { padding: 64px 0 70px; border-top: 1px solid var(--line); background: #151B22; }
.step-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; padding: 0; margin: 0; list-style: none; counter-reset: step; }
.step-list li { position: relative; padding: 22px 20px 20px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); }
.step-list li::after {
  position: absolute;
  top: 34px;
  right: -12px;
  width: 10px;
  height: 1px;
  content: "";
  background: #33424C;
}
.step-list li:last-child::after { display: none; }
.step-list span { display: block; margin-bottom: 8px; color: var(--teal); font-family: var(--mono); font-size: 20px; font-weight: 700; line-height: 1; }
.step-list h3 { margin: 0 0 6px; font-size: 16px; font-weight: 900; }
.step-list p { margin: 0; color: var(--muted); font-size: 12.8px; line-height: 1.8; }

/* download */
.download { padding: 22px 0; }
.download-inner {
  padding: 46px clamp(22px, 5vw, 56px);
  border: 1px solid rgba(49, 208, 170, .34);
  border-radius: 10px;
  background:
    radial-gradient(420px 220px at 88% 0%, rgba(49, 208, 170, .18), transparent 72%),
    #151B22;
  text-align: center;
}
.download .eyebrow { justify-content: center; }
.download h2 { color: var(--ink); }
.download-inner > p { max-width: 520px; margin: 11px auto 22px; color: var(--muted); font-size: 13.5px; }
.download-notes { display: flex; flex-wrap: wrap; justify-content: center; gap: 7px 20px; padding: 20px 0 0; margin: 26px auto 0; max-width: 620px; border-top: 1px solid var(--line); list-style: none; }
.download-notes li { color: #8FA2A7; font-family: var(--mono); font-size: 10.5px; }
.download-notes li::before { margin-right: 7px; content: "+"; color: var(--teal); }

/* footer */
.site-footer { padding: 38px 0 46px; border-top: 1px solid var(--line); }
.footer-grid { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 16px 36px; align-items: start; }
.footer-brand strong { font-size: 17px; font-weight: 900; }
.footer-brand p { margin: 3px 0 0; color: var(--muted); font-size: 12px; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 7px 20px; }
.footer-nav a { color: #A9B8BD; font-size: 12px; }
.footer-nav a:hover { color: var(--teal); }
.footer-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 7px 18px; margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--line); color: #728489; font-size: 12px; }
.footer-meta p { margin: 0; }
.footer-meta a { color: #728489; }
.disclaimer { grid-column: 1 / -1; margin: 0; color: #66797E; font-size: 11.5px; line-height: 1.8; }

/* responsive */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: minmax(0, 1fr) 320px; gap: 26px; }
  .poster-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .review-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 900px) {
  .menu-toggle { display: block; }
  .primary-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    padding: 8px 22px 16px;
    border-bottom: 1px solid var(--line);
    background: var(--bg);
    box-shadow: 0 16px 26px rgba(0, 0, 0, .55);
  }
  .primary-nav.is-open { display: block; }
  .primary-nav ul { flex-direction: column; align-items: stretch; gap: 0; }
  .primary-nav a { padding: 11px 0; border-bottom: 1px solid var(--line); }
  .hero-grid { padding: 42px 0 26px; }
  .faq-layout { grid-template-columns: 1fr; }
  .faq-heading { position: static; }
  .step-list { grid-template-columns: 1fr; }
  .step-list li::after { display: none; }
}
@media (max-width: 700px) {
  .hero-grid { grid-template-columns: 1fr; }
  .search-panel { justify-self: start; max-width: 400px; }
}
@media (max-width: 600px) {
  .page-shell, .nav-shell { width: calc(100% - 30px); }
  .hero { padding-top: 0; }
  .hero h1 { font-size: clamp(50px, 16vw, 72px); }
  .tag-cloud { grid-template-columns: repeat(3, minmax(0, 1fr)); padding-bottom: 30px; }
  .tag-cloud li { font-size: 10.5px; padding: 6px 4px; }
  .feature-grid { grid-template-columns: 1fr; }
  .poster-row { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 9px; }
  .review-list { grid-template-columns: 1fr; }
  .section-heading-split { grid-template-columns: 1fr; gap: 8px; }
  .section-heading-split > p:last-child { margin: 0; }
  .download .button { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; }
}
@media (max-width: 380px) {
  .brand { font-size: 17px; gap: 6px; }
  .brand img { width: 30px; height: 30px; }
  .brand-tag { display: none; }
  .nav-actions { gap: 7px; }
  .nav-download { min-height: 34px; padding: 0 10px; font-size: 11px; gap: 5px; }
  .nav-download svg { width: 13px; height: 13px; }
  .menu-toggle { width: 34px; height: 34px; }
  .hero h1 { font-size: 48px; }
  .hero-subtitle { font-size: 16px; }
  .feature-card { grid-template-columns: 40px minmax(0, 1fr); gap: 10px; padding: 20px 16px; }
  .feature-no { width: 34px; height: 34px; font-size: 11px; }
  .poster-row { gap: 8px; }
  .poster-card figcaption { padding: 8px; gap: 5px; }
}