@charset "UTF-8";

:root {
  --bg: #0b0b0b;
  --bg-2: #101010;
  --panel: #151515;
  --line: #2a2a26;
  --ink: #f4f2ea;
  --muted: #a09c8e;
  --yellow: #ffd400;
  --yellow-deep: #d9b400;
  --shell: 1160px;
  --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%; }
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(--yellow); 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(--yellow);
  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(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: 20px; font-weight: 900; letter-spacing: -.3px; }
.brand img { width: 36px; height: 36px; border: 1px solid #3a3a30; border-radius: 9px; object-fit: contain; background: #16160f; }
.brand-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 2px 6px;
  border-radius: 3px;
  background: var(--yellow);
  color: #15130a;
  font-family: var(--mono);
  font-size: 9px;
  font-style: normal;
  font-weight: 900;
  letter-spacing: .5px;
}
.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; border-bottom: 2px solid transparent; color: #b6b2a4; font-size: 13px; font-weight: 700; }
.primary-nav a:hover { border-bottom-color: var(--yellow); 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: 8px;
  padding: 0 16px;
  border: 1px solid var(--yellow);
  border-radius: 4px;
  background: var(--yellow);
  color: #15130a;
  font-size: 13px;
  font-weight: 900;
  white-space: nowrap;
  transition: background .18s ease, color .18s ease;
}
.nav-download:hover { background: transparent; color: var(--yellow); }
.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: 40px; height: 40px; padding: 0; border: 1px solid var(--line); border-radius: 4px; 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: capsule matrix / copy / phone / shelf bar */
.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(560px 340px at 92% 0%, rgba(255, 212, 0, .13), transparent 68%),
    linear-gradient(180deg, #121210 0%, var(--bg) 62%);
}
.hero::after {
  position: absolute;
  right: -120px;
  top: 120px;
  width: 420px;
  height: 420px;
  border: 1px solid rgba(255, 212, 0, .14);
  border-radius: 50%;
  content: "";
  pointer-events: none;
}
.page-shell { position: relative; z-index: 2; }

.cat-matrix {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 14px;
  padding: 16px 18px;
  margin-top: 26px;
  border: 1px solid #31312a;
  border-radius: 10px;
  background: rgba(21, 21, 18, .82);
}
.cat-label {
  flex: none;
  padding: 3px 9px;
  border-radius: 3px;
  background: var(--yellow);
  color: #15130a;
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 1px;
}
.cat-chips { display: flex; flex-wrap: wrap; gap: 7px; padding: 0; margin: 0; list-style: none; }
.cat-chips li {
  padding: 5px 14px;
  border: 1px solid #3b3b32;
  border-radius: 999px;
  color: #c4bfae;
  font-size: 12.5px;
  font-weight: 700;
  line-height: 1.5;
}
.cat-chips li.is-on { border-color: var(--yellow); background: var(--yellow); color: #15130a; }
.cat-note { margin-left: auto; color: #6f6b5e; font-family: var(--mono); font-size: 10px; white-space: nowrap; }

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 286px;
  align-items: center;
  gap: clamp(20px, 4vw, 62px);
  padding: 40px 0 34px;
}
.hero-copy { min-width: 0; }
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 14px;
  color: #a8a396;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 1.2px;
}
.hero-kicker b {
  padding: 3px 7px;
  border-radius: 3px;
  background: #2a1a1a;
  color: #ff6b6b;
  font-size: 9.5px;
  font-weight: 900;
  letter-spacing: 1px;
}
.hero h1 {
  margin: 0;
  font-size: clamp(54px, 8vw, 100px);
  font-weight: 900;
  letter-spacing: clamp(-3px, -.55vw, -5px);
  line-height: .94;
}
.hero-subtitle {
  margin: 18px 0 0;
  color: var(--yellow);
  font-size: clamp(18px, 2.1vw, 24px);
  font-weight: 800;
  line-height: 1.4;
}
.hero-lead { max-width: 530px; 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: 13px;
  padding: 0 26px;
  border: 1px solid transparent;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 900;
  transition: transform .18s ease, background .18s ease, color .18s ease;
}
.button-primary { background: var(--yellow); color: #15130a; box-shadow: 0 12px 26px rgba(255, 212, 0, .18); }
.button-primary:hover { background: #ffe23d; transform: translateY(-2px); }
.button-large { min-height: 54px; padding: 0 30px; font-size: 15px; }
.text-link { color: #d3cec0; border-bottom: 1px dashed #5a574a; font-size: 13px; font-weight: 800; }
.text-link span { display: inline-block; margin-left: 5px; color: var(--yellow); }

.hero-phone { position: relative; justify-self: end; width: 100%; margin: 0; }
.phone-body {
  padding: 7px;
  border: 1px solid #3a3a30;
  border-radius: 26px;
  background: #17170f;
  box-shadow: 0 24px 44px rgba(0, 0, 0, .6);
}
.phone-body img { width: 100%; height: auto; aspect-ratio: 9 / 16; object-fit: cover; border-radius: 20px; }
.hero-phone figcaption {
  margin-top: 12px;
  color: #7d7869;
  font-family: var(--mono);
  font-size: 10.5px;
  text-align: center;
  letter-spacing: .4px;
}
.hero-phone figcaption::before { margin-right: 6px; color: var(--yellow); content: "·"; }

.shelf-bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px 22px;
  padding: 14px 18px;
  margin: 0 0 44px;
  border: 1px solid #31312a;
  border-left: 3px solid var(--yellow);
  border-radius: 6px;
  background: #141412;
}
.shelf-title { display: flex; align-items: baseline; flex-wrap: wrap; gap: 8px; margin: 0; color: #cfcabc; font-size: 12.5px; font-weight: 700; }
.shelf-title b { color: var(--yellow); font-size: 13px; }
.shelf-list { display: flex; flex-wrap: wrap; gap: 8px 18px; padding: 0; margin: 0 0 0 auto; list-style: none; }
.shelf-list li { display: flex; align-items: baseline; gap: 6px; color: #d6d1c2; font-size: 12px; }
.shelf-list li span { color: var(--yellow); font-family: var(--mono); font-size: 9.5px; }
.shelf-list small { color: #7c786a; font-size: 10.5px; }

/* features */
.features { padding: 68px 0 74px; 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, 2.8vw, 34px); font-weight: 900; letter-spacing: -.8px; line-height: 1.3; }
.section-heading > p:last-child { max-width: 640px; margin: 11px 0 0; color: var(--muted); font-size: 14px; }
.section-heading-split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(200px, 300px); align-items: end; gap: 24px; }
.section-heading-split > p:last-child { margin: 0 0 4px; }
.feature-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.feature-card { padding: 26px 20px 24px; border-right: 1px solid var(--line); background: var(--panel); }
.feature-card:last-child { border-right: 0; }
.feature-no {
  display: block;
  margin-bottom: 14px;
  color: var(--yellow);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.6px;
}
.feature-card h3 { margin: 0 0 8px; font-size: 17px; font-weight: 900; }
.feature-card p { margin: 0; color: var(--muted); font-size: 12.8px; line-height: 1.85; }

/* shots */
.shots { padding: 68px 0 76px; }
.shot-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.shot-card { margin: 0; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); overflow: hidden; }
.shot-card img { width: 100%; height: auto; aspect-ratio: 9 / 16; object-fit: cover; object-position: center 6%; }
.shot-card figcaption { display: flex; align-items: baseline; gap: 8px; padding: 10px 12px 12px; border-top: 1px solid var(--line); }
.shot-card figcaption b { color: var(--yellow); font-family: var(--mono); font-size: 10px; }
.shot-card figcaption span { display: flex; flex-direction: column; font-size: 12.5px; font-weight: 800; line-height: 1.45; }
.shot-card figcaption small { color: var(--muted); font-size: 10px; font-weight: 500; }

/* faq */
.faq { padding: 66px 0 72px; border-top: 1px solid var(--line); background: var(--bg-2); }
.faq-layout { display: grid; grid-template-columns: minmax(0, .86fr) minmax(0, 1.14fr); 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 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: 900; }
.faq-list summary i { position: relative; flex: none; width: 20px; height: 20px; border: 1px solid #3d3d34; border-radius: 50%; }
.faq-list summary i::before,
.faq-list summary i::after {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 8px;
  height: 1.5px;
  content: "";
  background: var(--yellow);
  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 16px 0; margin: 0; color: var(--muted); font-size: 13.2px; line-height: 1.85; }

/* reviews */
.reviews { padding: 68px 0 74px; }
.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 18px 18px;
  border: 1px solid var(--line);
  border-left: 2px solid #44443a;
  border-radius: 5px;
  background: var(--panel);
  transition: border-color .18s ease;
}
.review-card:hover { border-left-color: var(--yellow); }
.review-meta { display: flex; align-items: baseline; justify-content: space-between; flex-wrap: wrap; gap: 5px; padding-bottom: 8px; margin-bottom: 8px; border-bottom: 1px dashed #32322a; }
.review-meta b { color: var(--yellow); font-size: 12.5px; font-weight: 900; }
.review-meta time { color: #757162; font-family: var(--mono); font-size: 9.5px; }
.review-card p { margin: 0; color: #bcb7a8; font-size: 12.8px; line-height: 1.8; }

/* steps: vertical rows */
.steps { padding: 66px 0 72px; border-top: 1px solid var(--line); background: var(--bg-2); }
.step-list { padding: 0; margin: 0; list-style: none; border-top: 1px solid var(--line); }
.step-list li {
  display: grid;
  grid-template-columns: 74px minmax(120px, 200px) minmax(0, 1fr);
  align-items: baseline;
  gap: 10px 22px;
  padding: 20px 4px;
  border-bottom: 1px solid var(--line);
}
.step-list span { color: var(--yellow); font-family: var(--mono); font-size: 19px; font-weight: 700; line-height: 1; }
.step-list h3 { margin: 0; font-size: 16.5px; 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: 22px 40px;
  padding: 44px clamp(22px, 5vw, 54px) 38px;
  border: 1px solid #3d3a22;
  border-radius: 10px;
  background:
    radial-gradient(400px 220px at 100% 0%, rgba(255, 212, 0, .2), transparent 70%),
    #17170f;
}
.download-copy { min-width: 0; }
.download h2 { max-width: 560px; color: #faf6e4; }
.download-copy > p { max-width: 500px; margin: 12px 0 0; color: #a9a390; font-size: 13.5px; }
.download-notes { display: flex; flex-wrap: wrap; gap: 7px 20px; padding: 0; margin: 18px 0 0; list-style: none; }
.download-notes li { color: #948e79; font-family: var(--mono); font-size: 10.5px; }
.download-notes li::before { margin-right: 7px; color: var(--yellow); content: "◍"; }
.download-act { display: flex; flex-direction: column; align-items: stretch; gap: 9px; }
.download-act .button { white-space: nowrap; }
.download-hash { color: #8b856f; font-family: var(--mono); font-size: 10px; text-align: center; }

/* footer */
.site-footer { padding: 40px 0 48px; 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: 17px; 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: #b5b0a1; font-size: 12px; }
.footer-nav a:hover { color: var(--yellow); }
.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: var(--muted); font-size: 12px; }
.footer-meta p { margin: 0; }
.footer-meta a { color: var(--muted); }
.disclaimer { grid-column: 1 / -1; margin: 0; color: #6f6b5d; font-size: 11.5px; line-height: 1.8; }

/* responsive */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: minmax(0, 1fr) 250px; gap: 26px; }
  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .feature-card:nth-child(2) { border-right: 0; }
  .feature-card:nth-child(1), .feature-card:nth-child(2) { border-bottom: 1px solid var(--line); }
}
@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: #0d0d0b;
    box-shadow: 0 16px 26px rgba(0, 0, 0, .6);
  }
  .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-grid { grid-template-columns: minmax(0, 1fr) 220px; padding: 34px 0 28px; }
  .cat-note { display: none; }
  .shot-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .faq-layout { grid-template-columns: 1fr; }
  .faq-heading { position: static; }
  .step-list li { grid-template-columns: 56px minmax(100px, 160px) minmax(0, 1fr); }
  .download-inner { grid-template-columns: 1fr; }
  .download-act { align-items: flex-start; }
}
@media (max-width: 600px) {
  .page-shell, .nav-shell { width: calc(100% - 32px); }
  .hero h1 { font-size: clamp(46px, 14vw, 62px); }
  .hero-grid { grid-template-columns: 1fr; gap: 24px; }
  .hero-phone { justify-self: start; width: min(240px, 72%); }
  .cat-matrix { padding: 13px 14px; gap: 9px; }
  .cat-chips li { padding: 4px 11px; font-size: 11.5px; }
  .shelf-list { margin-left: 0; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card { border-right: 0; border-bottom: 1px solid var(--line); }
  .feature-card:last-child { border-bottom: 0; }
  .section-heading-split { grid-template-columns: 1fr; gap: 8px; }
  .section-heading-split > p:last-child { margin: 0; }
  .review-list { grid-template-columns: 1fr; }
  .step-list li { grid-template-columns: 44px minmax(0, 1fr); gap: 6px 14px; }
  .step-list p { grid-column: 2; }
  .footer-grid { grid-template-columns: 1fr; }
  .download-inner { padding: 34px 20px 30px; }
  .download-act .button { width: 100%; }
  .download-hash { text-align: left; }
}
@media (max-width: 380px) {
  .brand { font-size: 16px; gap: 7px; }
  .brand img { width: 30px; height: 30px; }
  .brand-tag { display: none; }
  .nav-download { min-height: 34px; padding: 0 9px; font-size: 11px; gap: 5px; }
  .nav-download svg { width: 14px; height: 14px; }
  .menu-toggle { width: 34px; height: 34px; }
  .hero h1 { font-size: 44px; }
  .hero-subtitle { font-size: 16px; }
  .button { width: 100%; }
}