@charset "UTF-8";

:root {
  --bg: #1B1B1F;
  --bg-2: #202027;
  --panel: #262630;
  --line: #35353f;
  --ink: #f3eef2;
  --muted: #a5a1ab;
  --pink: #E0218A;
  --pink-soft: #ff6fb5;
  --paper: #f6f2f4;
  --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(--pink-soft); 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: 2.4px;
  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(27, 27, 31, .95);
  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: 20px;
}
.brand { display: inline-flex; align-items: center; flex: none; gap: 10px; font-size: 20px; font-weight: 900; letter-spacing: -.2px; }
.brand img { width: 38px; height: 38px; border: 1px solid var(--line); border-radius: 10px; object-fit: contain; background: #101014; }
.brand-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 19px;
  height: 19px;
  border-radius: 5px;
  background: var(--pink);
  color: #fff;
  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: #b6b2bd; font-size: 13px; font-weight: 700; }
.primary-nav a:hover { border-bottom-color: var(--pink); 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: 42px;
  gap: 8px;
  padding: 0 18px;
  border: 1px solid var(--pink);
  border-radius: 8px;
  background: var(--pink);
  color: #fff;
  font-size: 13px;
  font-weight: 900;
  white-space: nowrap;
  transition: background .18s ease, color .18s ease;
}
.nav-download:hover { background: transparent; color: var(--pink-soft); }
.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: 8px; 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: chapter list + full colour cover */
.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(560px 360px at 82% 4%, rgba(224, 33, 138, .28), transparent 70%),
    linear-gradient(180deg, #232329 0%, var(--bg) 100%);
}
.hero::before {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  content: "";
  background-image: repeating-linear-gradient(90deg, rgba(255, 255, 255, .028) 0 1px, transparent 1px 76px);
  pointer-events: none;
}
.hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(280px, .92fr);
  align-items: center;
  gap: clamp(24px, 4vw, 56px);
  padding: 58px 0 30px;
}
.hero-copy { min-width: 0; }
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  color: #bdb8c4;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 1.6px;
}
.hero-kicker b {
  padding: 3px 8px;
  border-radius: 4px;
  background: var(--pink);
  color: #fff;
  font-size: 9.5px;
  font-weight: 900;
  letter-spacing: 1.2px;
}
.hero h1 {
  margin: 0;
  font-size: clamp(50px, 7.4vw, 92px);
  font-weight: 900;
  letter-spacing: clamp(-2px, -.4vw, -4px);
  line-height: .94;
}
.hero-subtitle {
  margin: 18px 0 0;
  color: var(--pink-soft);
  font-size: clamp(18px, 2.1vw, 24px);
  font-weight: 800;
  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: 20px; margin-top: 26px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  gap: 14px;
  padding: 0 26px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 900;
  transition: transform .18s ease, background .18s ease, color .18s ease;
}
.button-primary { background: var(--pink); color: #fff; box-shadow: 0 14px 28px rgba(224, 33, 138, .28); }
.button-primary:hover { background: #ff3ba2; transform: translateY(-2px); }
.button-large { min-height: 52px; padding: 0 32px; font-size: 15px; }
.text-link { color: #cdc8d4; border-bottom: 1px dashed #5c5766; font-size: 13px; font-weight: 800; }
.text-link span { display: inline-block; margin-left: 5px; color: var(--pink-soft); }

.chapter-demo { display: grid; gap: 6px; padding: 0; margin: 26px 0 0; list-style: none; }
.chapter-demo li {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 48px 96px;
  align-items: center;
  gap: 10px;
  padding: 9px 13px;
  border: 1px solid var(--line);
  border-left: 3px solid #4a4550;
  border-radius: 5px;
  background: rgba(38, 38, 48, .74);
  font-size: 12.5px;
}
.chapter-demo li b { font-weight: 800; }
.chapter-demo li span { color: #8f8a99; font-size: 10.5px; }
.chapter-demo li time { color: #8f8a99; font-family: var(--mono); font-size: 10px; text-align: right; }
.chapter-demo li.is-new { border-left-color: var(--pink); background: rgba(224, 33, 138, .12); }
.chapter-demo li.is-new b { color: #ff8cc4; }
.chapter-demo li.is-new time { color: #ff8cc4; }

.hero-stage { position: relative; justify-self: end; width: min(100%, 352px); }
.hero-cover {
  position: relative;
  margin: 0;
  border: 1px solid #45414c;
  border-radius: 4px;
  background: var(--panel);
  box-shadow: 0 26px 44px rgba(0, 0, 0, .55);
}
.hero-cover img { width: 100%; height: auto; aspect-ratio: 9 / 16; object-fit: cover; border-radius: 3px; }
.hero-badge {
  position: absolute;
  right: -12px;
  top: 26px;
  padding: 7px 12px 8px;
  border-radius: 4px;
  background: var(--paper);
  color: #23141c;
  box-shadow: 0 10px 22px rgba(0, 0, 0, .45);
}
.hero-badge b { display: block; color: var(--pink); font-family: var(--mono); font-size: 13px; line-height: 1.3; }
.hero-badge span { display: block; color: #6b5b64; font-size: 10px; line-height: 1.4; }
.hero-thumb {
  position: absolute;
  left: -34px;
  bottom: -18px;
  width: 96px;
  margin: 0;
  border: 3px solid var(--paper);
  border-radius: 3px;
  background: var(--paper);
  box-shadow: 0 14px 26px rgba(0, 0, 0, .5);
  transform: rotate(-4deg);
}
.hero-thumb img { width: 100%; height: auto; aspect-ratio: 9 / 16; object-fit: cover; }

.swatch-strip {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  padding: 0 0 40px;
  margin: 0;
  list-style: none;
}
.swatch-strip li {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(32, 32, 39, .82);
}
.swatch-strip li::before { width: 18px; height: 18px; flex: none; border-radius: 50%; content: ""; background: var(--sw); }
.swatch-strip b { font-size: 12px; font-weight: 800; }
.swatch-strip span { margin-left: auto; color: #8b8695; font-family: var(--mono); font-size: 9.5px; }

/* features: four across */
.features { padding: 74px 0 80px; border-bottom: 1px solid var(--line); background: var(--bg-2); }
.section-heading { margin-bottom: 32px; }
.section-heading h2, .download h2 { margin: 0; font-size: clamp(24px, 2.8vw, 34px); 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(210px, 300px); 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: 12px; }
.feature-card {
  position: relative;
  padding: 24px 20px 22px;
  border: 1px solid var(--line);
  border-top: 2px solid var(--pink);
  border-radius: 6px;
  background: var(--panel);
}
.feature-no {
  display: block;
  margin-bottom: 10px;
  color: var(--pink-soft);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.6px;
}
.feature-card h3 { margin: 0 0 7px; font-size: 17px; font-weight: 900; }
.feature-card p { margin: 0; color: var(--muted); font-size: 12.5px; line-height: 1.8; }

/* shots: four across */
.shots { padding: 74px 0 82px; }
.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: 8px; background: var(--panel); overflow: hidden; }
.poster-card img { width: 100%; height: auto; aspect-ratio: 9 / 16; object-fit: cover; object-position: center 8%; }
.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(--pink-soft); 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: 72px 0 78px; border-top: 1px solid var(--line); background: var(--bg-2); }
.faq-heading { max-width: 620px; }
.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 0;
  cursor: pointer;
  list-style: none;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary h3 { margin: 0; font-size: 15.5px; font-weight: 900; }
.faq-list summary i { position: relative; flex: none; width: 22px; height: 22px; border: 1px solid var(--line); border-radius: 50%; }
.faq-list summary i::before,
.faq-list summary i::after {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 9px;
  height: 1.5px;
  content: "";
  background: var(--pink-soft);
  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 17px 0; margin: 0; color: var(--muted); font-size: 13.5px; line-height: 1.85; }

/* reviews: single column */
.reviews { padding: 74px 0 80px; }
.review-list { display: grid; grid-template-columns: 1fr; gap: 10px; padding: 0; margin: 0; list-style: none; }
.review-card {
  padding: 18px 22px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel);
}
.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(--pink-soft); font-size: 13px; font-weight: 900; }
.review-meta time { color: #7f7a88; font-family: var(--mono); font-size: 10px; }
.review-card p { margin: 0; color: #c6c1cd; font-size: 13px; line-height: 1.8; }

/* steps: vertical timeline */
.steps { padding: 72px 0 78px; border-top: 1px solid var(--line); background: var(--bg-2); }
.step-list { display: grid; grid-template-columns: 1fr; gap: 0; padding: 0; margin: 0; list-style: none; }
.step-list li { position: relative; display: grid; grid-template-columns: 74px minmax(0, 1fr); gap: 18px; padding: 0 0 26px; }
.step-list li::before {
  position: absolute;
  top: 8px;
  bottom: -8px;
  left: 26px;
  width: 1px;
  content: "";
  background: var(--line);
}
.step-list li:last-child { padding-bottom: 0; }
.step-list li:last-child::before { display: none; }
.step-list span {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border: 1px solid var(--pink);
  border-radius: 50%;
  background: var(--bg-2);
  color: var(--pink-soft);
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 700;
}
.step-list h3 { margin: 2px 0 6px; font-size: 17px; font-weight: 900; }
.step-list p { max-width: 620px; margin: 0; color: var(--muted); font-size: 13px; line-height: 1.8; }

/* download: split */
.download { padding: 30px 0 40px; }
.download-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(250px, .9fr);
  align-items: center;
  gap: 30px;
  padding: 46px clamp(24px, 4.6vw, 56px);
  border-radius: 10px;
  background:
    radial-gradient(420px 260px at 92% 8%, rgba(255, 111, 181, .5), transparent 70%),
    linear-gradient(120deg, #c3176f, #E0218A 62%, #ff5aa8 100%);
  color: #fff;
}
.download .eyebrow { color: #ffd7ec; }
.download h2 { max-width: 520px; color: #fff; }
.download-copy > p { max-width: 460px; margin: 12px 0 0; color: #ffd9ee; font-size: 14px; }
.download-action { display: flex; flex-direction: column; align-items: flex-start; gap: 18px; }
.download .button-primary { background: #1B1B1F; color: #fff; box-shadow: 0 14px 26px rgba(50, 4, 28, .32); }
.download .button-primary:hover { background: #33333d; }
.download-notes { display: grid; gap: 7px; padding: 0; margin: 0; list-style: none; }
.download-notes li { color: #ffe3f1; font-family: var(--mono); font-size: 11px; }
.download-notes li::before { margin-right: 8px; content: "◍"; }

/* footer */
.site-footer { padding: 42px 0 50px; 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: #bdb8c4; font-size: 12px; }
.footer-nav a:hover { color: var(--pink-soft); }
.footer-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 20px; margin-top: 22px; padding-top: 16px; 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: #7f7a88; font-size: 11.5px; line-height: 1.8; }

/* responsive */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: minmax(0, 1fr) 290px; gap: 26px; }
  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .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(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: 12px 0; border-bottom: 1px solid var(--line); }
  .hero-grid { grid-template-columns: 1fr; padding: 44px 0 24px; }
  .hero-stage { justify-self: start; width: min(320px, 82%); margin-bottom: 26px; }
  .hero-thumb { left: -18px; bottom: -14px; }
  .download-inner { grid-template-columns: 1fr; gap: 24px; }
}
@media (max-width: 600px) {
  .page-shell, .nav-shell { width: calc(100% - 32px); }
  .hero h1 { font-size: clamp(44px, 13.5vw, 62px); }
  .hero-lead { font-size: 14px; }
  .chapter-demo li { grid-template-columns: minmax(0, 1fr) 40px 84px; font-size: 12px; }
  .feature-grid { grid-template-columns: 1fr; }
  .poster-row { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .swatch-strip { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .section-heading-split { grid-template-columns: 1fr; gap: 10px; }
  .section-heading-split > p:last-child { margin: 0; }
  .footer-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .nav-actions { gap: 8px; }
  .nav-download { min-height: 36px; padding: 0 10px; font-size: 11px; gap: 4px; }
  .nav-download svg { width: 13px; height: 13px; }
  .menu-toggle { width: 36px; height: 36px; }
}
@media (max-width: 380px) {
  .brand { font-size: 14px; gap: 6px; letter-spacing: -.4px; }
  .brand img { width: 28px; height: 28px; }
  .brand-tag { display: none; }
  .nav-actions { gap: 8px; }
  .nav-download { min-height: 34px; padding: 0 9px; font-size: 10.5px; gap: 4px; }
  .nav-download svg { width: 12px; height: 12px; }
  .menu-toggle { width: 32px; height: 32px; }
  .hero h1 { font-size: 42px; }
  .hero-subtitle { font-size: 16px; }
  .button { width: 100%; }
  .hero-stage { width: 88%; }
  .step-list li { grid-template-columns: 54px minmax(0, 1fr); gap: 12px; }
  .step-list span { width: 40px; height: 40px; font-size: 13px; }
}