@charset "UTF-8";

:root {
  --bg: #0b0f0c;
  --bg-2: #0f1511;
  --panel: #131a15;
  --line: #26332a;
  --ink: #eef3e6;
  --muted: #93a397;
  --lime: #c2f73f;
  --mint: #5eead4;
  --paper: #e9e6d8;
  --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(--lime); 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(--lime);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2.4px;
  line-height: 1.4;
}
.eyebrow::before { width: 18px; height: 1px; content: ""; background: currentColor; }

/* header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  border-bottom: 1px solid var(--line);
  background: rgba(11, 15, 12, .94);
  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: 21px; font-weight: 900; letter-spacing: -.4px; }
.brand img { width: 38px; height: 38px; border: 1px solid var(--line); border-radius: 8px; object-fit: contain; background: #10170f; }
.brand-tag {
  padding: 2px 6px;
  border: 1px solid rgba(194, 247, 63, .55);
  border-radius: 3px;
  color: var(--lime);
  font-family: var(--mono);
  font-size: 9px;
  font-style: normal;
  font-weight: 700;
  letter-spacing: 1px;
  line-height: 1.5;
}
.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: #b6c2b4; font-size: 13px; font-weight: 700; }
.primary-nav a:hover { border-bottom-color: var(--lime); 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(--lime);
  border-radius: 4px;
  background: var(--lime);
  color: #0b0f0c;
  font-size: 13px;
  font-weight: 900;
  white-space: nowrap;
  transition: background .18s ease, color .18s ease;
}
.nav-download:hover { background: transparent; color: var(--lime); }
.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: 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: headline row + spec board / tilted phone */
.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(560px 320px at 82% 0%, rgba(194, 247, 63, .12), transparent 70%),
    linear-gradient(180deg, #0d130e 0%, var(--bg) 100%);
}
.hero::before {
  position: absolute;
  inset: 0;
  content: "";
  background-image:
    linear-gradient(rgba(194, 247, 63, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(194, 247, 63, .05) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(180deg, #000, transparent 82%);
  pointer-events: none;
}
.hero-top {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 96px;
  align-items: end;
  gap: 24px;
  padding: 58px 0 30px;
}
.hero-copy { min-width: 0; }
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 18px;
  color: #a9b8a5;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 1.4px;
}
.hero-kicker b {
  padding: 3px 7px;
  border-radius: 2px;
  background: var(--lime);
  color: #0b0f0c;
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0;
}
.hero h1 {
  margin: 0;
  font-size: clamp(56px, 7.4vw, 100px);
  font-weight: 900;
  letter-spacing: clamp(-2px, -.5vw, -5px);
  line-height: .94;
}
.hero-subtitle {
  margin: 16px 0 0;
  color: var(--lime);
  font-size: clamp(18px, 2.1vw, 24px);
  font-weight: 800;
  line-height: 1.45;
}
.hero-lead { max-width: 560px; margin: 14px 0 0; color: var(--muted); font-size: 14.5px; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 20px; margin-top: 26px; }
.hero-side {
  margin: 0 0 6px;
  padding-left: 16px;
  border-left: 1px solid var(--line);
  color: #647565;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 3px;
  writing-mode: vertical-rl;
  text-align: right;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  gap: 14px;
  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(--lime); color: #0b0f0c; box-shadow: 0 12px 26px rgba(194, 247, 63, .16); }
.button-primary:hover { background: #d7ff6e; transform: translateY(-2px); }
.button-large { min-height: 54px; padding: 0 32px; font-size: 15px; }
.text-link { color: #c6d2c2; border-bottom: 1px dashed #4a5a4d; font-size: 13px; font-weight: 800; }
.text-link span { display: inline-block; margin-left: 5px; color: var(--lime); }

.hero-board {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(230px, 288px);
  align-items: start;
  gap: clamp(24px, 4vw, 54px);
  padding: 0 0 44px;
}
.spec-board {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  padding: 0;
  margin: 22px 0 0;
  list-style: none;
  border-top: 1px dashed var(--line);
}
.spec-board li { padding: 20px 22px 0 0; }
.spec-board li + li { padding-left: 22px; border-left: 1px dashed var(--line); }
.spec-board b { display: block; color: var(--lime); font-size: clamp(22px, 2.4vw, 30px); font-weight: 900; letter-spacing: -.5px; line-height: 1.2; }
.spec-board span { display: block; margin-top: 6px; color: var(--muted); font-size: 11.5px; }
.hero-phone {
  margin: 0;
  padding: 8px 8px 6px;
  border: 1px solid #33443472;
  border-radius: 14px;
  background: #101711;
  box-shadow: 0 24px 46px rgba(0, 0, 0, .5), 0 0 0 1px rgba(194, 247, 63, .12);
  transform: rotate(-3.4deg) translateY(-6px);
}
.hero-phone img { width: 100%; height: auto; aspect-ratio: 9 / 16; border-radius: 9px; object-fit: cover; object-position: top; }
.hero-phone figcaption { padding: 8px 4px 2px; color: #7c8d7d; font-family: var(--mono); font-size: 10px; letter-spacing: .5px; text-align: center; }

/* features */
.features { padding: 74px 0 80px; background: var(--bg-2); border-bottom: 1px solid var(--line); }
.section-heading { margin-bottom: 32px; }
.section-heading h2, .download h2 { margin: 0; font-size: clamp(25px, 2.9vw, 36px); font-weight: 900; letter-spacing: -.9px; 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(220px, 320px); 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: 0; border-top: 1px solid var(--line); }
.feature-card { padding: 30px 24px 26px; border-bottom: 1px solid var(--line); border-right: 1px solid var(--line); }
.feature-card:last-child { border-right: 0; }
.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  margin-bottom: 16px;
  border: 1px solid rgba(194, 247, 63, .4);
  border-radius: 50%;
  color: var(--lime);
  font-size: 14px;
  font-weight: 900;
}
.feature-card h3 { margin: 0 0 8px; font-size: 17px; font-weight: 900; }
.feature-card p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.8; }

/* posters */
.shots { padding: 74px 0 80px; }
.poster-row { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; align-items: start; }
.poster-card { margin: 0; border: 1px solid var(--line); border-radius: 6px; background: var(--panel); overflow: hidden; }
.poster-card img { width: 100%; height: auto; aspect-ratio: 3 / 4; object-fit: cover; object-position: center 18%; }
.poster-card:nth-child(2) img,
.poster-card:nth-child(3) img { object-position: center 40%; }
.poster-card figcaption { display: flex; align-items: baseline; gap: 9px; padding: 12px 13px; border-top: 1px solid var(--line); }
.poster-card figcaption b { color: var(--lime); font-family: var(--mono); font-size: 10px; }
.poster-card figcaption span { display: flex; flex-direction: column; 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; background: var(--bg-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.faq-layout { display: grid; grid-template-columns: minmax(0, 320px) minmax(0, 1fr); align-items: start; gap: clamp(26px, 4.6vw, 58px); }
.faq-heading { position: sticky; top: calc(var(--header-height) + 24px); margin: 0; }
.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 2px; cursor: pointer; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary h3 { margin: 0; font-size: 14.5px; font-weight: 800; line-height: 1.55; }
.faq-list summary i { position: relative; flex: none; width: 19px; height: 19px; border: 1px solid #3c4c3d; border-radius: 3px; }
.faq-list summary i::before, .faq-list summary i::after {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 8px;
  height: 1.5px;
  content: "";
  background: var(--lime);
  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 2px; margin: 0; color: var(--muted); font-size: 13.5px; line-height: 1.85; }

/* reviews */
.reviews { padding: 74px 0 80px; }
.review-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; padding: 0; margin: 0; list-style: none; }
.review-card { padding: 20px; border: 1px solid var(--line); border-radius: 6px; background: var(--panel); }
.review-card:nth-child(2) { transform: translateY(16px); }
.review-meta { display: flex; align-items: baseline; justify-content: space-between; flex-wrap: wrap; gap: 6px; padding-bottom: 9px; margin-bottom: 9px; border-bottom: 1px dashed var(--line); }
.review-meta b { color: var(--mint); font-size: 13px; font-weight: 900; }
.review-meta time { color: #6d7f70; font-family: var(--mono); font-size: 10px; }
.review-card p { margin: 0; color: #b7c5b5; font-size: 13px; line-height: 1.8; }

/* steps */
.steps { padding: 70px 0 76px; border-top: 1px solid var(--line); background: var(--bg-2); }
.step-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; padding: 0; margin: 0; list-style: none; counter-reset: step; }
.step-list li { padding: 24px 22px 22px; border: 1px solid var(--line); border-left: 2px solid var(--lime); border-radius: 4px; background: var(--panel); }
.step-list span {
  display: block;
  margin-bottom: 12px;
  color: var(--lime);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
}
.step-list h3 { margin: 0 0 7px; font-size: 17px; font-weight: 900; }
.step-list p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.8; }

/* download */
.download { padding: 24px 0; }
.download-inner {
  position: relative;
  overflow: hidden;
  padding: 52px clamp(24px, 5vw, 60px) 46px;
  border: 1px solid #36482f;
  border-radius: 6px;
  background:
    radial-gradient(460px 260px at 92% 0%, rgba(94, 234, 212, .14), transparent 68%),
    linear-gradient(120deg, #121b12, #0e140f 62%, #101a12);
}
.download .eyebrow { color: var(--mint); }
.download h2 { max-width: 600px; color: #fff; }
.download-inner > p { max-width: 520px; margin: 13px 0 24px; color: var(--muted); font-size: 14px; }
.download-notes { display: flex; flex-wrap: wrap; gap: 8px 22px; padding: 22px 0 0; margin: 28px 0 0; border-top: 1px solid rgba(194, 247, 63, .2); list-style: none; }
.download-notes li { color: #93a497; font-family: var(--mono); font-size: 11px; }
.download-notes li::before { margin-right: 8px; color: var(--lime); content: "//"; }

/* 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 { 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: #b7c5b5; font-size: 12px; }
.footer-nav a:hover { color: var(--lime); }
.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: #6d7f70; font-size: 11.5px; line-height: 1.8; }

/* responsive */
@media (max-width: 1024px) {
  .hero-top { grid-template-columns: minmax(0, 1fr) 60px; }
  .hero-board { grid-template-columns: minmax(0, 1fr) 240px; 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: 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-top { grid-template-columns: 1fr; padding: 44px 0 30px; }
  .hero-side { display: none; }
  .hero-board { grid-template-columns: 1fr; padding-bottom: 40px; }
  .hero-phone { width: min(250px, 72%); margin: 12px auto 0; transform: rotate(-2.4deg); }
  .poster-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .faq-layout { grid-template-columns: 1fr; }
  .faq-heading { position: static; }
  .review-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .review-card:nth-child(2) { transform: none; }
  .step-list { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .page-shell, .nav-shell { width: calc(100% - 32px); }
  .hero h1 { font-size: clamp(46px, 15vw, 64px); }
  .hero-lead { font-size: 14px; }
  .spec-board { grid-template-columns: 1fr; border-top: 0; }
  .spec-board li { padding: 13px 0; border-top: 1px dashed var(--line); }
  .spec-board li + li { padding-left: 0; border-left: 0; }
  .spec-board b { font-size: 20px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card { border-right: 0; }
  .poster-row { gap: 12px; }
  .review-list { grid-template-columns: 1fr; }
  .section-heading-split { grid-template-columns: 1fr; gap: 10px; }
  .section-heading-split > p:last-child { margin: 0; }
  .download-notes li { font-size: 10.5px; }
  .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: 46px; }
  .hero-subtitle { font-size: 16px; }
  .button { width: 100%; }
  .hero-phone { width: 78%; }
}