@charset "UTF-8";

:root {
  --bg: #0A0A0A;
  --bg-2: #0D0D0D;
  --panel: #121212;
  --panel-2: #171717;
  --gold: #D4AF37;
  --gold-soft: #E7CE7C;
  --ink: #F2EFE8;
  --muted: #9C968B;
  --line: rgba(212, 175, 55, .18);
  --line-2: rgba(212, 175, 55, .38);
  --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: 1.75;
  overflow-wrap: anywhere;
}
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: 2px solid var(--gold); outline-offset: 4px; }
.page-shell { width: min(calc(100% - 56px), var(--shell)); margin: 0 auto; }

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  color: var(--gold);
  font-family: var(--mono);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  line-height: 1.4;
}
.eyebrow::before { width: 22px; height: 1px; content: ""; background: currentColor; }

/* header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  border-bottom: 1px solid var(--line);
  background: rgba(10, 10, 10, .94);
  backdrop-filter: blur(12px);
}
.nav-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: min(calc(100% - 56px), var(--shell));
  min-height: var(--header-height);
  margin: 0 auto;
}
.brand { display: inline-flex; align-items: center; flex: none; gap: 10px; font-size: 18px; font-weight: 900; letter-spacing: 2.6px; }
.brand img { width: 40px; height: 40px; border: 1px solid var(--line-2); border-radius: 10px; object-fit: contain; background: #050505; }
.brand-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 18px;
  border: 1px solid var(--line-2);
  border-radius: 3px;
  color: var(--gold);
  font-family: var(--mono);
  font-size: 9.5px;
  font-style: normal;
  letter-spacing: 0;
}
.primary-nav { margin-left: auto; }
.primary-nav ul { display: flex; align-items: center; gap: clamp(12px, 1.9vw, 26px); padding: 0; margin: 0; list-style: none; }
.primary-nav a { display: block; padding: 7px 0; border-bottom: 1px solid transparent; color: #B4AEA3; font-size: 13px; font-weight: 600; }
.primary-nav a:hover { border-bottom-color: var(--gold); color: var(--gold-soft); }
.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(--gold);
  border-radius: 2px;
  background: transparent;
  color: var(--gold-soft);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 1px;
  white-space: nowrap;
  transition: background .18s ease, color .18s ease;
}
.nav-download:hover { background: var(--gold); color: #0A0A0A; }
.nav-download svg, .button svg { width: 16px; height: 16px; flex: none; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.menu-toggle { display: none; width: 42px; height: 42px; padding: 0; border: 1px solid var(--line-2); border-radius: 2px; background: transparent; cursor: pointer; }
.menu-toggle span { display: block; width: 18px; height: 1px; margin: 5px auto; background: var(--gold-soft); transition: transform .18s ease; }
.menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(3px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3px) rotate(-45deg); }

/* hero */
.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(600px 420px at 50% 38%, rgba(212, 175, 55, .12), transparent 66%),
    radial-gradient(900px 500px at 50% 0%, rgba(255, 255, 255, .05), transparent 70%),
    var(--bg);
}
.hero::before {
  position: absolute;
  inset: 0;
  content: "";
  background-image: repeating-linear-gradient(90deg, rgba(212, 175, 55, .055) 0 1px, transparent 1px 84px);
  mask-image: linear-gradient(180deg, #000, transparent 88%);
  pointer-events: none;
}
.hero-stage {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 596px;
  padding: 62px 0 26px;
}
.hero-ring {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  width: clamp(266px, 31vw, 396px);
  aspect-ratio: 1;
  padding: 34px 30px;
  text-align: center;
  border: 1px solid var(--line-2);
  border-radius: 50%;
  background: radial-gradient(circle at 50% 42%, rgba(212, 175, 55, .15), rgba(10, 10, 10, 0) 70%);
  box-shadow: 0 0 0 12px rgba(212, 175, 55, .045), inset 0 0 70px rgba(212, 175, 55, .09);
}
.hero-ring::before {
  position: absolute;
  inset: 17px;
  content: "";
  border: 1px solid rgba(212, 175, 55, .16);
  border-radius: 50%;
}
.hero-kicker {
  position: relative;
  margin: 0;
  color: var(--gold);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 2.6px;
}
.hero h1 {
  position: relative;
  margin: 0;
  font-size: clamp(32px, 4.4vw, 54px);
  font-weight: 900;
  letter-spacing: .12em;
  line-height: 1;
  background: linear-gradient(175deg, #FFF6D6 4%, var(--gold) 46%, #9C7A1F 96%);
  -webkit-background-clip: text;
  background-clip: text;
  color: var(--gold);
  -webkit-text-fill-color: transparent;
}
.hero-subtitle {
  position: relative;
  max-width: 240px;
  margin: 0;
  color: #D8D2C6;
  font-size: clamp(15px, 1.5vw, 18px);
  font-weight: 600;
  letter-spacing: 1.5px;
  line-height: 1.5;
}
.button {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  gap: 12px;
  padding: 0 26px;
  border: 1px solid var(--gold);
  border-radius: 2px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1.4px;
  transition: transform .18s ease, background .18s ease, color .18s ease;
}
.button-primary { background: var(--gold); color: #0A0A0A; box-shadow: 0 14px 28px rgba(212, 175, 55, .18); }
.button-primary:hover { background: var(--gold-soft); transform: translateY(-2px); }
.button-large { min-height: 54px; padding: 0 32px; font-size: 14px; }
.hero-ring .button { margin-top: 6px; }
.hero-lead {
  position: relative;
  max-width: 520px;
  margin: 30px 0 0;
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.8;
  text-align: center;
}
.corner-card {
  position: absolute;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 9px 12px;
  border: 1px solid rgba(255, 255, 255, .08);
  border-radius: 6px;
  background: rgba(255, 255, 255, .035);
  filter: grayscale(1);
  opacity: .42;
}
.corner-a { top: 64px; left: 0; }
.corner-b { top: 64px; right: 0; }
.corner-c { bottom: 62px; left: 0; }
.corner-d { bottom: 62px; right: 0; }
.corner-thumb { width: 26px; height: 32px; border-radius: 3px; background: linear-gradient(160deg, #6F6F6F, #3A3A3A); }
.corner-text { display: flex; flex-direction: column; font-size: 11.5px; line-height: 1.4; letter-spacing: 1px; }
.corner-text small { color: #8B8B8B; font-size: 9.5px; letter-spacing: .5px; }
.hero-oneline {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin: 0;
  padding: 0 0 34px;
  color: var(--gold);
  font-size: 12px;
  letter-spacing: 6px;
}
.hero-oneline::before, .hero-oneline::after { width: clamp(40px, 16vw, 180px); height: 1px; content: ""; background: linear-gradient(90deg, transparent, var(--line-2)); }
.hero-oneline::after { background: linear-gradient(90deg, var(--line-2), transparent); }

/* features */
.features { padding: 74px 0 78px; 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(23px, 2.7vw, 34px); font-weight: 900; letter-spacing: .5px; line-height: 1.32; }
.section-heading > p:last-child { max-width: 620px; margin: 11px 0 0; color: var(--muted); font-size: 13.5px; }
.feature-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.feature-card { padding: 26px 22px 24px; background: var(--panel); }
.feature-no { display: block; margin-bottom: 12px; color: var(--gold); font-family: var(--mono); font-size: 11px; letter-spacing: 2px; }
.feature-card h3 { margin: 0 0 8px; font-size: 16.5px; font-weight: 800; letter-spacing: 1px; }
.feature-card p { margin: 0; color: var(--muted); font-size: 12.6px; line-height: 1.8; }

/* shots */
.shots { padding: 74px 0 80px; }
.shot-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.shot-card {
  display: flex;
  flex-direction: column;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--panel);
}
.shot-card img { width: 100%; height: auto; aspect-ratio: 3 / 4; object-fit: cover; object-position: center top; }
.shot-lead { grid-row: 1 / span 2; }
.shot-lead img { flex: 1 1 auto; height: 100%; min-height: 0; aspect-ratio: auto; }
.shot-card figcaption { display: flex; align-items: baseline; gap: 9px; padding: 11px 14px 12px; border-top: 1px solid var(--line); }
.shot-card figcaption b { color: var(--gold); font-family: var(--mono); font-size: 10px; }
.shot-card figcaption span { display: flex; flex-direction: column; font-size: 13px; font-weight: 700; line-height: 1.4; }
.shot-card figcaption small { color: var(--muted); font-size: 10.5px; font-weight: 400; }

/* 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, .78fr) minmax(0, 1.22fr); gap: clamp(24px, 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: 17px 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: 800; letter-spacing: .4px; }
.faq-list summary i { position: relative; flex: none; width: 20px; height: 20px; border: 1px solid var(--line-2); border-radius: 50%; }
.faq-list summary i::before,
.faq-list summary i::after { position: absolute; top: 50%; left: 50%; width: 8px; height: 1px; content: ""; background: var(--gold); 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 17px 0; margin: 0; color: var(--muted); font-size: 13.2px; line-height: 1.85; }

/* reviews */
.reviews { padding: 74px 0 80px; }
.review-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; padding: 0; margin: 0; list-style: none; }
.review-card { padding: 20px 22px; border: 1px solid var(--line); border-radius: 4px; background: var(--panel); }
.review-meta { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 9px; }
.review-meta b { color: var(--gold-soft); font-size: 13px; font-weight: 800; letter-spacing: 1px; }
.review-meta time { color: #7E776C; font-family: var(--mono); font-size: 10px; }
.review-card p { margin: 0; color: #B9B3A8; font-size: 13px; line-height: 1.8; }

/* steps */
.steps { padding: 72px 0 78px; 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: clamp(16px, 3vw, 38px);
  padding: 0;
  margin: 0;
  list-style: none;
}
.step-list::before {
  position: absolute;
  top: 21px;
  left: 8%;
  right: 8%;
  height: 1px;
  content: "";
  background: linear-gradient(90deg, transparent, var(--line-2) 12%, var(--line-2) 88%, transparent);
}
.step-list li { position: relative; padding-top: 52px; }
.step-list span {
  position: absolute;
  top: 0;
  left: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line-2);
  border-radius: 50%;
  background: var(--bg-2);
  color: var(--gold);
  font-family: var(--mono);
  font-size: 12px;
}
.step-list h3 { margin: 0 0 6px; font-size: 16px; font-weight: 800; letter-spacing: 1px; }
.step-list p { margin: 0; color: var(--muted); font-size: 12.8px; line-height: 1.75; }

/* download */
.download { padding: 26px 0 34px; }
.download-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: clamp(22px, 4vw, 52px);
  padding: 46px clamp(22px, 4vw, 56px);
  border: 1px solid var(--line-2);
  border-radius: 4px;
  background:
    radial-gradient(460px 240px at 8% 0%, rgba(212, 175, 55, .14), transparent 74%),
    var(--panel-2);
}
.download-copy { min-width: 0; }
.download .eyebrow { margin-bottom: 10px; }
.download h2 { max-width: 620px; }
.download-copy > p:not(.eyebrow) { max-width: 540px; margin: 12px 0 0; color: var(--muted); font-size: 13.5px; }
.download-notes { display: flex; flex-wrap: wrap; gap: 8px 22px; padding: 16px 0 0; margin: 18px 0 0; border-top: 1px solid var(--line); list-style: none; }
.download-notes li { color: #B4AEA3; font-family: var(--mono); font-size: 10.5px; letter-spacing: .6px; }
.download-notes li::before { margin-right: 7px; content: "/"; color: var(--gold); }

/* footer */
.site-footer { padding: 40px 0 52px; 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 { color: var(--gold-soft); font-size: 17px; letter-spacing: 2px; }
.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: #B4AEA3; font-size: 12px; }
.footer-nav a:hover { color: var(--gold-soft); }
.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: 11.5px; }
.footer-meta p { margin: 0; }
.disclaimer { grid-column: 1 / -1; margin: 0; color: #7E776C; font-size: 11px; line-height: 1.8; }

/* responsive */
@media (max-width: 1024px) {
  .hero-stage { min-height: 560px; }
  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .shot-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .shot-lead { grid-row: span 1; }
  .shot-lead img { aspect-ratio: 3 / 4; height: auto; }
  .faq-layout { grid-template-columns: minmax(0, 1fr); gap: 26px; }
  .faq-heading { position: static; }
}
@media (max-width: 1000px) {
  .download-inner { grid-template-columns: 1fr; align-items: start; }
  .step-list { grid-template-columns: repeat(3, 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 28px 16px;
    border-bottom: 1px solid var(--line);
    background: #0A0A0A;
    box-shadow: 0 18px 28px 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: 12px 0; border-bottom: 1px solid var(--line); }
  .hero-stage { min-height: 0; padding: 34px 0 22px; display: flex; flex-direction: row; flex-wrap: wrap; align-items: center; justify-content: center; gap: 12px; }
  .corner-card { position: static; width: calc(50% - 6px); filter: grayscale(1); opacity: .4; }
  .hero-ring { order: 1; flex: 0 0 100%; margin: 0 auto 8px; }
  .corner-card { order: 2; }
  .hero-lead { order: 4; flex: 0 0 100%; }
}
@media (max-width: 768px) {
  .page-shell, .nav-shell { width: calc(100% - 40px); }
  .review-list { grid-template-columns: 1fr; gap: 12px; }
  .step-list { grid-template-columns: 1fr; gap: 22px; }
  .step-list::before { top: 0; bottom: 0; left: 21px; right: auto; width: 1px; height: auto; background: linear-gradient(180deg, transparent, var(--line-2) 10%, var(--line-2) 90%, transparent); }
  .step-list li { padding: 0 0 0 62px; }
  .step-list span { top: 0; }
  .footer-grid { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .page-shell, .nav-shell { width: calc(100% - 32px); }
  .brand { font-size: 14px; gap: 8px; letter-spacing: 1.6px; }
  .brand img { width: 34px; height: 34px; }
  .brand-tag { display: none; }
  .nav-download { min-height: 36px; padding: 0 10px; font-size: 11px; gap: 5px; letter-spacing: .4px; }
  .nav-download svg { width: 13px; height: 13px; }
  .menu-toggle { width: 36px; height: 36px; }
  .hero-ring { width: min(100%, 300px); padding: 26px 22px; gap: 12px; }
  .hero h1 { font-size: clamp(28px, 8.4vw, 38px); letter-spacing: .1em; }
  .hero-subtitle { max-width: 200px; font-size: 14.5px; letter-spacing: 1px; }
  .hero-kicker { font-size: 9.5px; letter-spacing: 1.6px; }
  .button { width: 100%; min-height: 44px; font-size: 12px; }
  .hero-lead { margin-top: 22px; font-size: 12.8px; }
  .hero-oneline { font-size: 11px; letter-spacing: 4px; padding-bottom: 26px; }
  .feature-grid { grid-template-columns: 1fr; }
  .shot-grid { grid-template-columns: 1fr; }
  .shot-card img, .shot-lead img { aspect-ratio: 3 / 4; height: auto; }
  .download-inner { padding: 30px 20px; }
  .faq-list details p { padding-right: 8px; }
}
@media (max-width: 380px) {
  .brand { font-size: 12.5px; }
  .hero h1 { font-size: 26px; letter-spacing: .08em; }
  .hero-ring { width: min(100%, 272px); padding: 22px 18px; }
  .corner-card { padding: 7px 9px; }
  .corner-thumb { width: 22px; height: 27px; }
}