@charset "UTF-8";

:root {
  --bg: #f5fbf8;
  --bg-2: #e8f7f2;
  --panel: #ffffff;
  --line: #d3e6df;
  --ink: #233239;
  --muted: #5d6f74;
  --mint: #e8f7f2;
  --teal: #17a47c;
  --teal-deep: #0f7d5e;
  --charcoal: #233239;
  --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(--teal); 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(--teal-deep);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2.2px;
  line-height: 1.4;
}
.eyebrow::before { width: 18px; height: 2px; content: ""; background: currentColor; }

/* header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  border-bottom: 1px solid var(--line);
  background: rgba(245, 251, 248, .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: 20px;
}
.brand { display: inline-flex; align-items: center; flex: none; gap: 10px; color: var(--charcoal); font-size: 21px; font-weight: 900; letter-spacing: -.3px; }
.brand img { width: 38px; height: 38px; border: 1px solid var(--line); border-radius: 10px; object-fit: contain; background: var(--mint); }
.brand-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--charcoal);
  color: #b8f2e0;
  font-family: var(--mono);
  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, 25px); padding: 0; margin: 0; list-style: none; }
.primary-nav a { display: block; padding: 7px 0; border-bottom: 2px solid transparent; color: #55696d; font-size: 13px; font-weight: 700; }
.primary-nav a:hover { border-bottom-color: var(--teal); color: var(--charcoal); }
.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(--charcoal);
  border-radius: 999px;
  background: var(--charcoal);
  color: #eafff7;
  font-size: 13px;
  font-weight: 900;
  white-space: nowrap;
  transition: background .18s ease, color .18s ease;
}
.nav-download:hover { background: transparent; color: var(--charcoal); }
.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: 50%; background: var(--panel); cursor: pointer; }
.menu-toggle span { display: block; width: 18px; height: 2px; margin: 5px auto; background: var(--charcoal); 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: shelf grid + copy + reminder bar */
.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(560px 360px at 12% 0%, #dcf4ec, transparent 70%),
    linear-gradient(170deg, #eef9f4 0%, var(--bg) 78%);
}
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
  align-items: center;
  gap: clamp(28px, 4vw, 54px);
  padding: 52px 0 34px;
}
.hero-shelf { min-width: 0; }
.shelf-board {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 9px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--panel);
  box-shadow: 0 18px 38px rgba(35, 50, 57, .12);
}
.shelf-cell {
  position: relative;
  display: block;
  aspect-ratio: 3 / 4;
  border-radius: 6px;
  background: var(--mint);
  overflow: hidden;
}
.shelf-cell .spine { position: absolute; inset: 0; display: block; }
.shelf-cell .spine::after {
  position: absolute;
  inset: 12% 14% auto 12%;
  height: 6px;
  content: "";
  border-radius: 3px;
  background: rgba(255, 255, 255, .78);
  box-shadow: 0 12px 0 rgba(255, 255, 255, .56), 0 24px 0 rgba(255, 255, 255, .34);
}
.s1 { background: linear-gradient(150deg, #9fdcca, #4fb79b); }
.s2 { background: linear-gradient(150deg, #b8c7d8, #7c93ab); }
.s3 { background: linear-gradient(150deg, #f3d4a8, #d9a666); }
.s4 { background: linear-gradient(150deg, #c9b6e6, #8f78bd); }
.s5 { background: linear-gradient(150deg, #a9d8ea, #5fa7c6); }
.s6 { background: linear-gradient(150deg, #f0bfc4, #cf8490); }
.s7 { background: linear-gradient(150deg, #b6dfb0, #70ae6a); }
.s8 { background: linear-gradient(150deg, #e6cf9f, #c19a52); }
.s9 { background: linear-gradient(150deg, #b3bdd6, #6f7f9e); }
.shelf-cell b {
  position: absolute;
  right: 7px;
  bottom: 5px;
  color: rgba(35, 50, 57, .62);
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 700;
}
.shelf-cell em {
  position: absolute;
  top: 6px;
  left: 6px;
  padding: 0 5px;
  border-radius: 3px;
  background: var(--charcoal);
  color: #aef0dc;
  font-size: 9px;
  font-style: normal;
  font-weight: 700;
}
.shelf-cell.is-new { outline: 2px solid var(--teal); outline-offset: 1px; }
.shelf-note { margin: 12px 0 0; color: var(--muted); font-family: var(--mono); font-size: 10.5px; text-align: center; }

.hero-copy { min-width: 0; }
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 1.6px;
}
.hero-kicker b {
  padding: 3px 8px;
  border-radius: 4px;
  background: var(--charcoal);
  color: #aef0dc;
  font-size: 9.5px;
  font-weight: 900;
  letter-spacing: 1.4px;
}
.hero h1 {
  margin: 0;
  color: var(--charcoal);
  font-size: clamp(50px, 7.4vw, 92px);
  font-weight: 900;
  letter-spacing: clamp(-2px, -.4vw, -4px);
  line-height: 1;
}
.hero-subtitle {
  margin: 18px 0 0;
  color: var(--teal-deep);
  font-size: clamp(18px, 2.1vw, 24px);
  font-weight: 800;
  line-height: 1.4;
}
.hero-lead { max-width: 500px; margin: 14px 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: 14px;
  padding: 0 26px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 900;
  transition: transform .18s ease, background .18s ease, color .18s ease;
}
.button-primary { background: var(--charcoal); color: #eafff7; box-shadow: 0 14px 26px rgba(35, 50, 57, .22); }
.button-primary:hover { background: #33474f; transform: translateY(-2px); }
.button-large { min-height: 54px; padding: 0 34px; font-size: 15px; }
.text-link { color: #40565c; border-bottom: 1px dashed #a9c9be; font-size: 13px; font-weight: 800; }
.text-link span { display: inline-block; margin-left: 5px; color: var(--teal-deep); }

.remind-bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 16px;
  margin-bottom: 40px;
  padding: 14px 20px;
  border-radius: 10px;
  background: var(--charcoal);
  color: #d7ece4;
  font-size: 12.5px;
}
.remind-bar b { color: #8fe6cb; font-family: var(--mono); font-size: 13px; letter-spacing: 1px; }
.remind-bar span { flex: 1; min-width: 200px; }
.remind-bar a { color: #aef0dc; font-weight: 800; white-space: nowrap; }

/* features: heading left + 2x2 cards */
.features { padding: 74px 0 78px; border-bottom: 1px solid var(--line); background: var(--bg-2); }
.features-layout { display: grid; grid-template-columns: minmax(0, .72fr) minmax(0, 1.28fr); gap: clamp(24px, 4vw, 52px); align-items: start; }
.features-heading { position: sticky; top: calc(var(--header-height) + 26px); margin-bottom: 0; }
.section-heading { margin-bottom: 32px; }
.section-heading h2, .download h2 { margin: 0; color: var(--charcoal); font-size: clamp(24px, 2.8vw, 34px); font-weight: 900; letter-spacing: -.8px; line-height: 1.3; }
.section-heading > p:last-child { max-width: 600px; margin: 12px 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(2, minmax(0, 1fr)); gap: 12px; }
.feature-card {
  padding: 24px 22px 22px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel);
  box-shadow: 0 10px 24px rgba(35, 50, 57, .05);
}
.feature-no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  margin-bottom: 12px;
  border-radius: 50%;
  background: var(--mint);
  color: var(--teal-deep);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
}
.feature-card h3 { margin: 0 0 8px; color: var(--charcoal); font-size: 17px; font-weight: 900; }
.feature-card p { margin: 0; color: var(--muted); font-size: 12.5px; line-height: 1.85; }

/* shots: 4 across */
.shots { padding: 74px 0 80px; }
.poster-row { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; 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 22%; }
.poster-card:nth-child(3) img { object-position: center 12%; }
.poster-card figcaption { padding: 10px 12px 12px; border-top: 1px solid var(--line); }
.poster-card figcaption b { margin-right: 7px; color: var(--teal-deep); font-family: var(--mono); font-size: 10px; }
.poster-card figcaption span { display: inline-flex; flex-direction: column; vertical-align: top; color: var(--charcoal); 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: 72px 0 78px; border-top: 1px solid var(--line); background: var(--bg-2); }
.faq-layout { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: clamp(26px, 4vw, 54px); }
.faq-heading { position: sticky; top: calc(var(--header-height) + 26px); 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: 16px;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary h3 { margin: 0; color: var(--charcoal); font-size: 15.5px; font-weight: 900; }
.faq-list summary i { position: relative; flex: none; width: 22px; height: 22px; border: 1px solid #bcd9cf; border-radius: 50%; background: var(--panel); }
.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 30px 18px 0; margin: 0; color: var(--muted); font-size: 13.5px; line-height: 1.85; }

/* reviews: single column with date rail */
.reviews { padding: 74px 0 80px; }
.review-list { display: grid; grid-template-columns: 1fr; gap: 10px; padding: 0; margin: 0; list-style: none; }
.review-card {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  align-items: baseline;
  gap: 6px 20px;
  padding: 16px 20px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: linear-gradient(90deg, var(--mint), var(--panel) 42%);
}
.review-meta { display: contents; }
.review-meta b { color: var(--teal-deep); font-size: 13px; font-weight: 900; }
.review-meta time { grid-column: 1; color: #7c9490; font-family: var(--mono); font-size: 10px; }
.review-card p { grid-column: 2; grid-row: 1 / span 2; margin: 0; color: #40565c; font-size: 13.5px; line-height: 1.8; }

/* steps: stacked rows */
.steps { padding: 70px 0 74px; border-top: 1px solid var(--line); background: var(--bg-2); }
.step-list { display: grid; grid-template-columns: 1fr; gap: 10px; padding: 0; margin: 0; list-style: none; counter-reset: step; }
.step-list li {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  align-items: start;
  gap: 18px;
  padding: 18px 22px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
}
.step-list span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: var(--mint);
  color: var(--teal-deep);
  font-family: var(--mono);
  font-size: 16px;
  font-weight: 700;
}
.step-list h3 { margin: 0 0 5px; color: var(--charcoal); font-size: 16px; font-weight: 900; }
.step-list p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.8; }

/* download: left copy, right button */
.download { padding: 26px 0; }
.download-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 26px 40px;
  padding: 46px clamp(24px, 5vw, 56px);
  border-radius: 14px;
  background:
    radial-gradient(360px 220px at 100% 0%, rgba(23, 164, 124, .35), transparent 72%),
    var(--charcoal);
}
.download .eyebrow { color: #8fe6cb; }
.download h2 { max-width: 560px; color: #f2fbf7; }
.download-inner > .download-copy > p { max-width: 500px; margin: 12px 0 0; color: #b6ccc5; font-size: 14px; }
.download .button-primary { background: #8fe6cb; color: #10312a; box-shadow: 0 12px 24px rgba(0, 0, 0, .3); }
.download .button-primary:hover { background: #aef0dc; }
.download-side { display: flex; flex-direction: column; align-items: flex-start; gap: 10px; }
.download-hint { color: #94b3aa; font-family: var(--mono); font-size: 10.5px; }
.download-notes { display: flex; flex-wrap: wrap; gap: 6px 20px; padding: 18px 0 0; margin: 18px 0 0; border-top: 1px solid rgba(143, 230, 203, .25); list-style: none; }
.download-notes li { color: #a9c6bd; font-family: var(--mono); font-size: 11px; }
.download-notes li::before { margin-right: 7px; content: "·"; color: #8fe6cb; }

/* 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 { color: var(--charcoal); 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: #4f636a; font-size: 12px; }
.footer-nav a:hover { color: var(--teal-deep); }
.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: #7c9490; font-size: 11.5px; line-height: 1.8; }

/* responsive */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: minmax(0, .86fr) minmax(0, 1.14fr); gap: 26px; }
  .poster-row { 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 24px 16px;
    border-bottom: 1px solid var(--line);
    background: var(--bg);
    box-shadow: 0 16px 26px rgba(35, 50, 57, .16);
  }
  .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: 40px 0 26px; gap: 28px; }
  .shelf-board { max-width: 420px; }
  .remind-bar { margin-bottom: 32px; }
  .features-layout { grid-template-columns: 1fr; }
  .features-heading { position: static; margin-bottom: 22px; }
  .faq-layout { grid-template-columns: 1fr; }
  .faq-heading { position: static; }
  .download-inner { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .page-shell, .nav-shell { width: calc(100% - 32px); }
  .hero h1 { font-size: clamp(44px, 13vw, 62px); }
  .feature-grid { grid-template-columns: 1fr; }
  .poster-row { grid-auto-flow: column; grid-auto-columns: 68%; grid-template-columns: none; gap: 10px; overflow-x: auto; scroll-snap-type: x mandatory; }
  .poster-card { scroll-snap-align: start; }
  .review-card { grid-template-columns: 1fr; }
  .review-meta b, .review-meta time { grid-column: 1; }
  .review-card p { grid-column: 1; grid-row: auto; }
  .section-heading-split { grid-template-columns: 1fr; gap: 10px; }
  .section-heading-split > p:last-child { margin: 0; }
  .step-list li { grid-template-columns: 52px minmax(0, 1fr); gap: 14px; padding: 16px; }
  .step-list span { width: 44px; height: 44px; border-radius: 10px; font-size: 14px; }
  .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; }
  .button { width: 100%; }
  .shelf-board { gap: 7px; padding: 12px; }
  .poster-row { grid-auto-columns: 76%; }
}