@charset "UTF-8";

:root {
  --bg: #ffffff;
  --bg-2: #f2f7fe;
  --panel: #ffffff;
  --line: #dbe6f6;
  --ink: #0e1a2b;
  --muted: #56687f;
  --blue: #1173e6;
  --blue-deep: #0a4fa6;
  --navy: #0b1e33;
  --sky: #e8f1fe;
  --shell: 1180px;
  --header-height: 70px;
  --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(--blue); outline-offset: 4px; }
.page-shell { width: min(calc(100% - 48px), var(--shell)); margin: 0 auto; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 12px;
  padding: 3px 12px 3px 10px;
  border-radius: 999px;
  background: var(--sky);
  color: var(--blue-deep);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 1.4px;
  line-height: 1.6;
}
.eyebrow::before { width: 6px; height: 6px; border-radius: 50%; content: ""; background: var(--blue); }

/* header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, .95);
  backdrop-filter: blur(12px);
}
.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: 9px; font-size: 21px; font-weight: 900; letter-spacing: -.6px; color: var(--navy); }
.brand img { width: 38px; height: 38px; border-radius: 11px; object-fit: contain; }
.brand-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 6px;
  background: var(--blue);
  color: #fff;
  font-size: 11px;
  font-style: normal;
  font-weight: 900;
}
.primary-nav { margin-left: auto; }
.primary-nav ul { display: flex; align-items: center; gap: clamp(12px, 2vw, 26px); padding: 0; margin: 0; list-style: none; }
.primary-nav a { display: block; padding: 7px 0; border-bottom: 2px solid transparent; color: #33475f; font-size: 13px; font-weight: 700; }
.primary-nav a:hover { border-bottom-color: var(--blue); color: var(--blue); }
.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 18px;
  border: 1px solid var(--blue);
  border-radius: 10px;
  background: var(--blue);
  color: #fff;
  font-size: 13px;
  font-weight: 900;
  white-space: nowrap;
  transition: background .18s ease, box-shadow .18s ease;
}
.nav-download:hover { background: var(--blue-deep); box-shadow: 0 8px 18px rgba(17, 115, 230, .28); }
.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: #fff; cursor: pointer; }
.menu-toggle span { display: block; width: 18px; height: 2px; margin: 5px auto; background: var(--navy); 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;
  padding: 30px 0 56px;
  background:
    radial-gradient(700px 340px at 82% -20%, rgba(17, 115, 230, .16), transparent 70%),
    linear-gradient(180deg, #f7fbff 0%, #ffffff 68%);
}
.player-strip {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: clamp(10px, 2vw, 22px);
  padding: 13px clamp(14px, 2vw, 22px);
  border-radius: 14px;
  background: linear-gradient(115deg, var(--navy), #123a63 72%, #1b5aa0);
  color: #fff;
  box-shadow: 0 18px 34px rgba(11, 30, 51, .22);
}
.player-play {
  flex: none;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--blue);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .35);
  position: relative;
}
.player-play::after {
  position: absolute;
  top: 50%;
  left: 54%;
  content: "";
  border: 6px solid transparent;
  border-left: 9px solid #fff;
  transform: translate(-50%, -50%);
}
.player-meta { display: flex; flex: none; align-items: center; gap: 8px; font-size: 12px; }
.player-meta b { font-size: 12.5px; font-weight: 800; white-space: nowrap; }
.player-meta i {
  padding: 1px 6px;
  border: 1px solid rgba(255, 255, 255, .5);
  border-radius: 3px;
  font-family: var(--mono);
  font-size: 9px;
  font-style: normal;
  letter-spacing: .5px;
}
.player-track { position: relative; flex: 1 1 auto; min-width: 60px; height: 5px; border-radius: 999px; background: rgba(255, 255, 255, .22); }
.player-track span { position: absolute; inset: 0 auto 0 0; border-radius: 999px; background: linear-gradient(90deg, #57a6ff, #9fd0ff); }
.player-track span::after {
  position: absolute;
  top: 50%;
  right: -5px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  content: "";
  background: #fff;
  box-shadow: 0 0 0 3px rgba(255, 255, 255, .25);
  transform: translateY(-50%);
}
.player-time { flex: none; font-family: var(--mono); font-size: 10.5px; letter-spacing: .4px; }
.player-speed { flex: none; padding: 2px 8px; border-radius: 4px; background: rgba(255, 255, 255, .14); font-family: var(--mono); font-size: 10px; }

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
  align-items: center;
  gap: clamp(24px, 4vw, 54px);
  padding-top: clamp(30px, 5vw, 54px);
}
.hero-copy { min-width: 0; }
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 14px;
  color: #4a6079;
  font-size: 11.5px;
  letter-spacing: .6px;
}
.hero-kicker b { padding: 2px 7px; border-radius: 4px; background: var(--sky); color: var(--blue-deep); font-family: var(--mono); font-size: 9.5px; letter-spacing: 1px; }
.hero h1 {
  margin: 0;
  color: var(--navy);
  font-size: clamp(52px, 8vw, 96px);
  font-weight: 900;
  letter-spacing: -.045em;
  line-height: .94;
}
.hero-subtitle {
  margin: 18px 0 0;
  color: var(--blue);
  font-size: clamp(18px, 2.1vw, 24px);
  font-weight: 900;
  letter-spacing: -.3px;
  line-height: 1.4;
}
.hero-lead { max-width: 520px; margin: 13px 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: 50px;
  gap: 12px;
  padding: 0 26px;
  border: 1px solid transparent;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 900;
  transition: transform .18s ease, background .18s ease;
}
.button-primary { background: var(--blue); color: #fff; box-shadow: 0 12px 26px rgba(17, 115, 230, .26); }
.button-primary:hover { background: var(--blue-deep); transform: translateY(-2px); }
.button-large { min-height: 54px; padding: 0 32px; font-size: 15px; }
.text-link { color: #2d4258; border-bottom: 1px dashed #a9bdd6; font-size: 13px; font-weight: 800; }
.text-link span { display: inline-block; margin-left: 4px; color: var(--blue); }

.ep-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  align-items: start;
  padding: 0;
  margin: 0;
  list-style: none;
}
.ep-row li { position: relative; border-radius: 12px; background: var(--navy); box-shadow: 0 16px 26px rgba(11, 30, 51, .16); overflow: hidden; }
.ep-row li:nth-child(2) { transform: translateY(18px); }
.ep-row img { width: 100%; height: auto; aspect-ratio: 3 / 4; object-fit: cover; }
.ep-row b {
  position: absolute;
  left: 8px;
  bottom: 8px;
  padding: 2px 7px;
  border-radius: 5px;
  background: rgba(255, 255, 255, .92);
  color: var(--blue-deep);
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: .4px;
}

/* features */
.features { padding: 70px 0 76px; background: var(--bg-2); border-top: 1px solid var(--line); }
.section-heading { margin-bottom: 30px; }
.section-heading h2, .download h2 { margin: 0; font-size: clamp(25px, 2.9vw, 35px); font-weight: 900; letter-spacing: -.8px; line-height: 1.3; }
.section-heading > p:last-child { max-width: 620px; margin: 11px 0 0; color: var(--muted); font-size: 14px; }
.section-heading-split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(200px, 290px); align-items: end; gap: 26px; }
.section-heading-split > p:last-child { margin: 0 0 5px; }
.feature-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.feature-card {
  position: relative;
  padding: 24px 20px 22px;
  border: 1px solid var(--line);
  border-top: 3px solid var(--blue);
  border-radius: 10px;
  background: #fff;
  transition: box-shadow .18s ease, transform .18s ease;
}
.feature-card:hover { box-shadow: 0 14px 26px rgba(17, 60, 120, .1); transform: translateY(-3px); }
.feature-no { display: block; margin-bottom: 10px; color: #b8cdea; font-family: var(--mono); font-size: 19px; font-weight: 700; line-height: 1; }
.feature-card h3 { margin: 0 0 8px; font-size: 16.5px; font-weight: 900; }
.feature-card p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.8; }

/* shots */
.shots { padding: 72px 0 78px; }
.poster-row { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; align-items: start; padding-top: 10px; }
.poster-card { margin: 0; border: 1px solid var(--line); border-radius: 12px; background: #fff; box-shadow: 0 10px 22px rgba(17, 60, 120, .07); overflow: hidden; }
.poster-card:nth-child(even) { margin-top: 26px; }
.poster-card img { width: 100%; height: auto; aspect-ratio: 3 / 4; object-fit: cover; object-position: center 18%; }
.poster-card figcaption { display: flex; align-items: baseline; gap: 8px; padding: 11px 12px 12px; border-top: 1px solid var(--line); }
.poster-card figcaption b { color: var(--blue); 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: 10.5px; font-weight: 500; }

/* faq */
.faq { padding: 70px 0 76px; border-top: 1px solid var(--line); background: var(--bg-2); }
.faq-layout { display: grid; grid-template-columns: minmax(0, .76fr) minmax(0, 1.24fr); gap: clamp(24px, 4vw, 54px); }
.faq-heading { position: sticky; top: calc(var(--header-height) + 24px); align-self: start; }
.faq-list { display: grid; gap: 10px; }
.faq-list details { border: 1px solid var(--line); border-radius: 10px; background: #fff; }
.faq-list summary { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 15px 16px; 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: 20px; height: 20px; border-radius: 6px; background: var(--sky); }
.faq-list summary i::before,
.faq-list summary i::after {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 9px;
  height: 1.6px;
  content: "";
  background: var(--blue);
  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 18px 16px; 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(2, minmax(0, 1fr)); gap: 12px; padding: 0; margin: 0; list-style: none; }
.review-card { padding: 18px 20px; border: 1px solid var(--line); border-left: 3px solid var(--blue); border-radius: 8px; background: #fff; }
.review-meta { display: flex; align-items: baseline; justify-content: space-between; flex-wrap: wrap; gap: 6px; padding-bottom: 8px; margin-bottom: 8px; border-bottom: 1px dashed var(--line); }
.review-meta b { color: var(--blue-deep); font-size: 13px; font-weight: 900; }
.review-meta time { color: #8296ad; font-family: var(--mono); font-size: 10px; }
.review-card p { margin: 0; color: #3d4f65; 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 { position: relative; 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: 22px 20px; border: 1px solid var(--line); border-radius: 10px; background: #fff; }
.step-list li::after {
  position: absolute;
  top: 34px;
  right: -18px;
  width: 20px;
  border-top: 2px dashed #b7cbe6;
  content: "";
}
.step-list li:last-child::after { display: none; }
.step-list span { display: block; margin-bottom: 8px; color: var(--blue); font-family: var(--mono); font-size: 20px; font-weight: 700; line-height: 1; }
.step-list h3 { margin: 0 0 6px; font-size: 16.5px; font-weight: 900; }
.step-list p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.8; }

/* download */
.download { padding: 26px 0; }
.download-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  align-items: center;
  gap: clamp(22px, 4vw, 48px);
  padding: clamp(30px, 4.5vw, 52px);
  border-radius: 16px;
  background:
    radial-gradient(420px 240px at 92% -10%, rgba(255, 255, 255, .28), transparent 70%),
    linear-gradient(118deg, #1058b8, #1173e6 58%, #3f9bff);
  color: #fff;
}
.download .eyebrow { background: rgba(255, 255, 255, .2); color: #fff; }
.download .eyebrow::before { background: #fff; }
.download h2 { color: #fff; }
.download-inner > .download-copy > p { margin: 12px 0 0; color: #dbe9ff; font-size: 14px; }
.download-side { display: flex; flex-direction: column; align-items: flex-start; gap: 18px; }
.download .button-primary { background: #fff; color: var(--blue-deep); box-shadow: 0 12px 24px rgba(6, 38, 78, .25); }
.download .button-primary:hover { background: #eaf3ff; }
.download-notes { display: flex; flex-wrap: wrap; gap: 6px 16px; padding: 0; margin: 0; list-style: none; }
.download-notes li { color: #e2eeff; font-family: var(--mono); font-size: 11px; }
.download-notes li::before { margin-right: 7px; content: "▪"; }

/* footer */
.site-footer { padding: 40px 0 50px; border-top: 1px solid var(--line); background: #fff; }
.footer-grid { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 18px 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 20px; }
.footer-nav a { color: #3f5470; font-size: 12px; }
.footer-nav a:hover { color: var(--blue); }
.footer-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 20px; margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }
.footer-meta p { margin: 0; }
.disclaimer { grid-column: 1 / -1; margin: 0; color: #7b8ca0; font-size: 11.5px; line-height: 1.8; }

/* responsive */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: minmax(0, 1fr) 320px; gap: 26px; }
  .feature-grid { 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: 6px 24px 14px;
    border-bottom: 1px solid var(--line);
    background: #fff;
    box-shadow: 0 16px 26px rgba(15, 40, 75, .12);
  }
  .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-grid { grid-template-columns: 1fr; padding-top: 36px; }
  .ep-row { max-width: 460px; }
  .faq-layout { grid-template-columns: 1fr; gap: 22px; }
  .faq-heading { position: static; }
  .poster-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .poster-card:nth-child(even) { margin-top: 0; }
  .poster-card:nth-child(2), .poster-card:nth-child(4) { margin-top: 22px; }
  .download-inner { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .page-shell, .nav-shell { width: calc(100% - 32px); }
  .brand { font-size: 17px; gap: 7px; }
  .brand img { width: 30px; height: 30px; }
  .brand-tag { display: none; }
  .nav-download { min-height: 36px; padding: 0 11px; font-size: 11.5px; gap: 5px; }
  .nav-download svg { width: 14px; height: 14px; }
  .menu-toggle { width: 36px; height: 36px; }
  .hero h1 { font-size: clamp(40px, 14vw, 64px); }
  .hero-lead { font-size: 14px; }
  .player-speed { display: none; }
  .player-time { font-size: 9.5px; }
  .ep-row { max-width: none; }
  .feature-grid { grid-template-columns: 1fr; }
  .poster-row { grid-template-columns: 1fr; padding-top: 0; }
  .poster-card:nth-child(2), .poster-card:nth-child(4) { margin-top: 0; }
  .poster-card:nth-child(even) { margin-top: 0; }
  .review-list { grid-template-columns: 1fr; }
  .step-list { grid-template-columns: 1fr; }
  .step-list li::after { display: none; }
  .section-heading-split { grid-template-columns: 1fr; gap: 8px; }
  .section-heading-split > p:last-child { margin: 0; }
  .download-side { align-items: stretch; }
  .download .button { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; }
}
@media (max-width: 380px) {
  .brand { font-size: 17px; gap: 7px; }
  .brand img { width: 30px; height: 30px; }
  .brand-tag { display: none; }
  .nav-actions { gap: 8px; }
  .nav-download { min-height: 34px; padding: 0 10px; font-size: 11px; gap: 5px; }
  .nav-download svg { width: 14px; height: 14px; }
  .menu-toggle { width: 34px; height: 34px; }
  .hero h1 { font-size: 42px; }
  .hero-subtitle { font-size: 16px; }
  .player-strip { gap: 8px; padding: 10px 12px; }
  .player-play { width: 24px; height: 24px; }
  .player-meta b { font-size: 11px; }
  .button { width: 100%; }
}