@charset "UTF-8";

:root {
  --bg: #0b0b0b;
  --bg-2: #080808;
  --panel: #121212;
  --line: #262626;
  --ink: #f2efec;
  --muted: #9c9691;
  --red: #d7263d;
  --red-soft: #ff4a5f;
  --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: 1.7;
}
img { display: block; max-width: 100%; height: auto; }
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(--red-soft); outline-offset: 4px; }
.page-shell { width: min(calc(100% - 48px), var(--shell)); margin: 0 auto; }
.eyebrow {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 12px;
  color: var(--red-soft);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2.2px;
  line-height: 1.4;
}
.eyebrow::before { width: 14px; height: 2px; content: ""; background: currentColor; }

/* header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  border-bottom: 1px solid var(--line);
  background: rgba(11, 11, 11, .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: 10px; font-size: 21px; font-weight: 900; letter-spacing: 1px; }
.brand img { width: 36px; height: 36px; border-radius: 3px; object-fit: contain; background: #1a1a1a; }
.brand-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 24px;
  height: 19px;
  padding: 0 4px;
  border-radius: 3px;
  background: var(--red);
  color: #fff;
  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, 1.8vw, 24px); padding: 0; margin: 0; list-style: none; }
.primary-nav a { display: block; padding: 6px 0; color: #a8a29d; font-size: 13px; font-weight: 700; }
.primary-nav a:hover { 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(--red);
  border-radius: 3px;
  background: var(--red);
  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(--red-soft); }
.nav-download svg, .button svg { width: 17px; height: 17px; flex: none; fill: none; stroke: currentColor; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; }
.menu-toggle { display: none; width: 40px; height: 40px; padding: 0; border: 1px solid var(--line); border-radius: 3px; 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: full screen, center title, side strips */
.hero {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: calc(100vh - var(--header-height));
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(700px 460px at 50% 42%, rgba(215, 38, 61, .18), transparent 72%),
    #090909;
}
.hero::before {
  position: absolute;
  inset: 0;
  content: "";
  background-image: repeating-linear-gradient(90deg, rgba(255, 255, 255, .028) 0 1px, transparent 1px 84px);
  pointer-events: none;
}
.hero-grid {
  position: relative;
  z-index: 2;
  flex: 1;
  display: grid;
  grid-template-columns: minmax(0, 148px) minmax(0, 1fr) minmax(0, 148px);
  align-items: center;
  gap: clamp(14px, 2.4vw, 34px);
  padding: 40px 0 34px;
}
.hero-side { display: grid; gap: 12px; }
.hero-side-left { justify-self: start; }
.hero-side-right { justify-self: end; }
.mini-card { margin: 0; border: 1px solid #2c2c2c; border-radius: 3px; overflow: hidden; background: #141414; }
.mini-card img { width: 100%; height: auto; aspect-ratio: 2 / 3; object-fit: cover; object-position: center 22%; filter: saturate(.92); }
.mini-card-down { transform: translateY(26px); }
.hero-center { text-align: center; min-width: 0; }
.hero-kicker {
  margin: 0 0 14px;
  color: #b9b1ab;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 1.8px;
}
.hero h1 {
  margin: 0;
  font-family: var(--mono);
  font-size: clamp(62px, 12vw, 158px);
  font-weight: 700;
  letter-spacing: clamp(-2px, .6vw, 10px);
  line-height: .9;
}
.hero-subtitle {
  margin: 20px 0 0;
  color: var(--red-soft);
  font-size: clamp(17px, 2vw, 23px);
  font-weight: 800;
  line-height: 1.4;
}
.hero-lead { max-width: 520px; margin: 12px auto 0; color: var(--muted); font-size: 14.5px; }
.hero-actions { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 20px; margin-top: 26px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  gap: 12px;
  padding: 0 27px;
  border: 1px solid transparent;
  border-radius: 3px;
  font-size: 14px;
  font-weight: 900;
  transition: transform .18s ease, background .18s ease, color .18s ease;
}
.button-primary { background: var(--red); color: #fff; box-shadow: 0 14px 28px rgba(215, 38, 61, .28); }
.button-primary:hover { background: var(--red-soft); transform: translateY(-2px); }
.button-large { min-height: 54px; padding: 0 34px; font-size: 15px; }
.text-link { color: #c9c3be; border-bottom: 1px dashed #4f4a46; font-size: 13px; font-weight: 800; }
.text-link span { display: inline-block; margin-left: 4px; color: var(--red-soft); }

.grade-bar {
  position: relative;
  z-index: 2;
  border-top: 1px solid rgba(255, 255, 255, .14);
  background: var(--red);
  color: #fff;
}
.grade-bar-inner {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 22px;
  min-height: 48px;
  padding: 9px 0;
}
.grade-bar-inner b { padding: 1px 8px; border: 1px solid rgba(255, 255, 255, .6); border-radius: 2px; font-family: var(--mono); font-size: 11px; letter-spacing: 1px; }
.grade-bar-inner span { font-size: 11.5px; letter-spacing: .4px; }
.grade-bar-inner span:first-of-type { font-weight: 800; }

/* features: hairline rows */
.features { padding: 74px 0 78px; border-bottom: 1px solid var(--line); background: var(--bg-2); }
.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: 1.32; }
.section-heading > p:last-child { max-width: 620px; margin: 10px 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-list { border-top: 1px solid var(--line); }
.feature-row {
  display: grid;
  grid-template-columns: 74px 190px minmax(0, 1fr);
  align-items: baseline;
  gap: 16px;
  padding: 22px 6px;
  border-bottom: 1px solid var(--line);
  transition: background .18s ease;
}
.feature-row:hover { background: rgba(215, 38, 61, .06); }
.feature-no { color: var(--red-soft); font-family: var(--mono); font-size: 13px; font-weight: 700; letter-spacing: 1.4px; }
.feature-row h3 { margin: 0; font-size: 17px; font-weight: 900; }
.feature-row p { margin: 0; color: var(--muted); font-size: 13.5px; line-height: 1.8; }

/* shots: two columns with offset */
.shots { padding: 74px 0 84px; background: var(--bg); }
.shot-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; align-items: start; }
.shot-card { margin: 0; border: 1px solid var(--line); border-radius: 3px; background: var(--panel); overflow: hidden; }
.shot-card:nth-child(even) { transform: translateY(22px); }
.shot-card img { width: 100%; height: auto; aspect-ratio: 3 / 4; object-fit: cover; object-position: center 18%; }
.shot-card figcaption { display: flex; align-items: baseline; gap: 8px; padding: 11px 13px 12px; border-top: 1px solid var(--line); font-size: 13px; font-weight: 800; }
.shot-card figcaption b { color: var(--red-soft); font-family: var(--mono); font-size: 10px; }
.shot-card figcaption small { color: var(--muted); font-size: 10.5px; font-weight: 500; }

/* faq */
.faq { padding: 74px 0 80px; border-top: 1px solid var(--line); background: var(--bg-2); }
.faq-layout { display: grid; grid-template-columns: minmax(0, .72fr) minmax(0, 1.28fr); 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: 17px 2px;
  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: 18px; height: 18px; border: 1px solid #3a3a3a; border-radius: 2px; }
.faq-list summary i::before,
.faq-list summary i::after {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 8px;
  height: 1.5px;
  content: "";
  background: var(--red-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 34px 17px 2px; margin: 0; color: var(--muted); font-size: 13.5px; line-height: 1.85; }

/* reviews: single column with big index */
.reviews { padding: 74px 0 80px; }
.review-list { display: grid; gap: 9px; padding: 0; margin: 0; list-style: none; }
.review-card {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  align-items: start;
  gap: 14px;
  padding: 17px 20px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--red);
  border-radius: 2px;
  background: var(--panel);
}
.review-no { color: #4a4441; font-family: var(--mono); font-size: 22px; font-weight: 700; line-height: 1.1; }
.review-meta { display: flex; align-items: baseline; justify-content: space-between; flex-wrap: wrap; gap: 6px; margin-bottom: 6px; }
.review-meta b { color: var(--ink); font-size: 13.5px; font-weight: 900; }
.review-meta time { color: #77716d; font-family: var(--mono); font-size: 10.5px; }
.review-card p { margin: 0; color: #bcb6b1; font-size: 13px; line-height: 1.85; }

/* steps: three rows, red rail */
.steps { padding: 72px 0 78px; border-top: 1px solid var(--line); background: var(--bg-2); }
.step-list { display: grid; gap: 10px; padding: 0; margin: 0; list-style: none; }
.step-list li {
  display: grid;
  grid-template-columns: 60px minmax(0, 1fr);
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: var(--panel);
}
.step-list span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 46px;
  border-right: 2px solid var(--red);
  color: var(--red-soft);
  font-family: var(--mono);
  font-size: 20px;
  font-weight: 700;
}
.step-list h3 { margin: 0 0 3px; font-size: 16.5px; font-weight: 900; }
.step-list p { margin: 0; color: var(--muted); font-size: 13.5px; line-height: 1.8; }

/* download */
.download { padding: 26px 0; background: var(--bg); }
.download-inner {
  padding: 44px clamp(22px, 4vw, 52px) 38px;
  border: 1px solid #3a2026;
  border-radius: 3px;
  background:
    linear-gradient(90deg, rgba(215, 38, 61, .22), rgba(215, 38, 61, 0) 62%),
    #101010;
}
.download .eyebrow { color: var(--red-soft); }
.download h2 { max-width: 640px; color: var(--ink); }
.download-inner > p:last-of-type { max-width: 520px; margin: 12px 0 24px; color: var(--muted); font-size: 14px; }
.download .button-primary { background: var(--red); }
.download .button-primary:hover { background: var(--red-soft); }
.download-notes { display: flex; flex-wrap: wrap; gap: 8px 24px; padding: 18px 0 0; margin: 24px 0 0; border-top: 1px solid #2c2c2c; list-style: none; }
.download-notes li { color: #8e8883; font-family: var(--mono); font-size: 11px; }
.download-notes li::before { margin-right: 7px; content: "／"; color: var(--red-soft); }

/* 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: 18px 40px; align-items: start; }
.footer-brand strong { font-size: 18px; font-weight: 900; letter-spacing: 1px; }
.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: #a8a29d; font-size: 12px; }
.footer-nav a:hover { color: #fff; }
.footer-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 18px; margin-top: 22px; padding-top: 16px; border-top: 1px solid var(--line); color: #7c7672; font-size: 12px; }
.footer-meta p { margin: 0; }
.footer-meta a { color: #7c7672; }
.disclaimer { grid-column: 1 / -1; margin: 0; color: #77716d; font-size: 11.5px; line-height: 1.8; }

/* responsive */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: minmax(0, 116px) minmax(0, 1fr) minmax(0, 116px); }
  .feature-row { grid-template-columns: 60px minmax(0, 1fr); gap: 6px 14px; }
  .feature-row p { grid-column: 2; }
}
@media (max-width: 900px) {
  .menu-toggle { display: block; }
  .primary-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    padding: 8px 24px 14px;
    border-bottom: 1px solid var(--line);
    background: #0c0c0c;
    box-shadow: 0 16px 26px rgba(0, 0, 0, .7);
  }
  .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 { min-height: 0; }
  .hero-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; padding: 34px 0 30px; }
  .hero-center { grid-column: 1 / -1; order: -1; }
  .hero-side { display: contents; }
  .mini-card-down { transform: none; }
  .hero h1 { letter-spacing: 2px; }
  .faq-layout { grid-template-columns: 1fr; }
  .faq-heading { position: static; }
}
@media (max-width: 600px) {
  .page-shell, .nav-shell { width: calc(100% - 30px); }
  .hero h1 { font-size: clamp(48px, 17vw, 76px); }
  .hero-lead { font-size: 14px; }
  .shot-grid { grid-template-columns: 1fr; }
  .shot-card:nth-child(even) { transform: none; }
  .review-card { grid-template-columns: 38px minmax(0, 1fr); gap: 10px; padding: 15px 14px; }
  .review-no { font-size: 17px; }
  .step-list li { grid-template-columns: 52px minmax(0, 1fr); padding: 15px 14px; }
  .section-heading-split { grid-template-columns: 1fr; gap: 9px; }
  .section-heading-split > p:last-child { margin: 0; }
  .grade-bar-inner { gap: 6px 14px; }
  .grade-bar-inner span { font-size: 10.5px; }
  .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-download { min-height: 34px; padding: 0 9px; font-size: 11px; gap: 4px; }
  .nav-download svg { width: 13px; height: 13px; }
  .menu-toggle { width: 34px; height: 34px; }
  .hero h1 { font-size: 44px; }
  .hero-subtitle { font-size: 15px; }
  .button { width: 100%; }
  .grade-bar-inner b { display: none; }
  .feature-row { padding: 16px 2px; }
}