@charset "UTF-8";

:root {
  --bg: #081420;
  --bg-2: #0f2233;
  --panel: #12293b;
  --panel-2: #0d1f2e;
  --line: #21425c;
  --ink: #eaf3fa;
  --muted: #91a8bb;
  --blue: #4fb3ff;
  --blue-deep: #1b6fa8;
  --green: #3ed598;
  --amber: #f2c14e;
  --red: #ff6b6b;
  --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(--amber); 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(--blue);
  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(8, 20, 32, .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: 21px; font-weight: 900; letter-spacing: -.4px; }
.brand img { width: 38px; height: 38px; border: 1px solid var(--line); border-radius: 9px; object-fit: contain; background: #0b1c2a; }
.brand-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 19px;
  height: 19px;
  border: 1px solid var(--blue);
  border-radius: 4px;
  color: var(--blue);
  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: 7px 0; border-bottom: 2px solid transparent; color: #a5bacd; font-size: 13px; font-weight: 700; }
.primary-nav a:hover { border-bottom-color: var(--blue); 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(--blue);
  border-radius: 6px;
  background: var(--blue);
  color: #06131d;
  font-size: 13px;
  font-weight: 900;
  white-space: nowrap;
  transition: background .18s ease, color .18s ease;
}
.nav-download:hover { background: transparent; color: var(--blue); }
.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: 6px; 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 */
.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(560px 320px at 84% 0%, rgba(79, 179, 255, .22), transparent 70%),
    linear-gradient(180deg, #0d2335 0%, var(--bg) 92%);
}
.hero::before {
  position: absolute;
  inset: 0;
  content: "";
  background-image:
    linear-gradient(rgba(79, 179, 255, .06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(79, 179, 255, .06) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: linear-gradient(180deg, #000, transparent 78%);
  pointer-events: none;
}
.search-strip {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 50px;
  margin: 34px 0 0;
  padding: 8px 10px 8px 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(13, 31, 46, .92);
  box-shadow: inset 0 1px 0 rgba(79, 179, 255, .12);
}
.search-strip > svg { width: 17px; height: 17px; flex: none; fill: none; stroke: var(--blue); stroke-width: 1.9; stroke-linecap: round; }
.search-ph { flex: 1 1 auto; min-width: 0; color: #7f96a9; font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.search-tag { flex: none; padding: 3px 9px; border: 1px solid var(--line); border-radius: 4px; color: #9fb6c8; font-family: var(--mono); font-size: 10px; }
.search-go { flex: none; padding: 6px 16px; border-radius: 5px; background: rgba(79, 179, 255, .16); color: var(--blue); font-size: 12px; font-weight: 800; }

.hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 330px) minmax(0, 1fr);
  align-items: center;
  gap: clamp(24px, 4vw, 56px);
  padding: 40px 0 56px;
}
.console {
  margin: 0;
  padding: 16px 16px 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: linear-gradient(180deg, rgba(18, 41, 59, .96), rgba(9, 22, 33, .96));
  box-shadow: 0 26px 48px rgba(0, 0, 0, .45);
}
.console-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  color: #8fa6b9;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 1.4px;
}
.console-head b { color: var(--blue); font-size: 11px; letter-spacing: .5px; }
.source-rows { padding: 0; margin: 10px 0 14px; list-style: none; }
.source-rows li {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 9px;
  margin-bottom: 6px;
  border-left: 2px solid var(--line);
  border-radius: 4px;
  background: rgba(255, 255, 255, .025);
  font-size: 12.5px;
}
.source-rows .dot { width: 8px; height: 8px; flex: none; border-radius: 50%; background: var(--muted); box-shadow: 0 0 0 3px rgba(255, 255, 255, .05); }
.source-rows b { font-weight: 800; }
.source-rows em { margin-left: auto; color: #8ba2b5; font-family: var(--mono); font-size: 10.5px; font-style: normal; }
.source-rows i { width: 22px; flex: none; font-size: 10px; font-style: normal; text-align: right; }
.source-rows .is-ok { border-left-color: var(--green); }
.source-rows .is-ok .dot { background: var(--green); box-shadow: 0 0 0 3px rgba(62, 213, 152, .16); }
.source-rows .is-ok i { color: var(--green); }
.source-rows .is-slow { border-left-color: var(--amber); }
.source-rows .is-slow .dot { background: var(--amber); box-shadow: 0 0 0 3px rgba(242, 193, 78, .16); }
.source-rows .is-slow i { color: var(--amber); }
.source-rows .is-down { border-left-color: var(--red); }
.source-rows .is-down .dot { background: var(--red); box-shadow: 0 0 0 3px rgba(255, 107, 107, .16); }
.source-rows .is-down i { color: var(--red); }
.console img { width: 100%; height: auto; aspect-ratio: 9 / 16; object-fit: cover; object-position: top center; border: 1px solid var(--line); border-radius: 6px; }
.console figcaption { padding-top: 9px; color: #7f96a9; font-family: var(--mono); font-size: 10px; text-align: center; letter-spacing: .6px; }

.hero-copy { min-width: 0; }
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  padding-left: 12px;
  border-left: 2px solid var(--blue);
  color: #9fb6c8;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 1.6px;
}
.hero h1 {
  margin: 0;
  font-size: clamp(52px, 7.6vw, 96px);
  font-weight: 900;
  letter-spacing: clamp(-3px, -.5vw, -5px);
  line-height: .96;
}
.hero-subtitle {
  margin: 18px 0 0;
  color: var(--blue);
  font-size: clamp(18px, 2vw, 24px);
  font-weight: 800;
  line-height: 1.4;
}
.hero-lead { max-width: 540px; 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: 28px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  gap: 14px;
  padding: 0 28px;
  border: 1px solid transparent;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 900;
  transition: transform .18s ease, background .18s ease, color .18s ease;
}
.button-primary { background: var(--blue); color: #06131d; box-shadow: 0 14px 30px rgba(79, 179, 255, .22); }
.button-primary:hover { background: #7cc6ff; transform: translateY(-2px); }
.button-large { min-height: 54px; padding: 0 34px; font-size: 15px; }
.text-link { color: #c2d5e4; border-bottom: 1px dashed #3a5c78; font-size: 13px; font-weight: 800; }
.text-link span { display: inline-block; margin-left: 5px; color: var(--blue); }

/* features: four in a row */
.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(25px, 2.8vw, 35px); 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(200px, 290px); 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: 46px 20px 22px;
  border: 1px solid var(--line);
  border-top: 2px solid rgba(79, 179, 255, .5);
  border-radius: 6px;
  background: var(--panel);
}
.feature-no {
  position: absolute;
  top: 14px;
  right: 16px;
  color: rgba(79, 179, 255, .45);
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .8px;
}
.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: 74px 0 80px; }
.poster-row { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; align-items: start; }
.poster-card {
  position: relative;
  margin: 0;
  padding: 10px 10px 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-2);
  overflow: hidden;
}
.poster-card::before {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 2;
  padding: 2px 8px;
  border-radius: 3px;
  background: rgba(8, 20, 32, .82);
  color: var(--blue);
  font-family: var(--mono);
  font-size: 10px;
  content: "SCREEN";
  letter-spacing: 1px;
}
.poster-card img { width: 100%; height: auto; aspect-ratio: 9 / 16; object-fit: cover; object-position: top center; border-radius: 4px; }
.poster-card:nth-child(2) img { object-position: center 24%; }
.poster-card:nth-child(3) img { object-position: top center; }
.poster-card figcaption { display: flex; align-items: baseline; gap: 9px; padding: 12px 4px 14px; }
.poster-card figcaption b { color: var(--blue); 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: two-column cards */
.faq { padding: 72px 0 78px; border-top: 1px solid var(--line); background: var(--bg-2); }
.faq-heading { max-width: 640px; }
.faq-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.faq-list details { border: 1px solid var(--line); border-radius: 6px; background: var(--panel-2); }
.faq-list summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 16px 18px;
  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: 900; line-height: 1.5; }
.faq-list summary i { position: relative; flex: none; width: 20px; height: 20px; border: 1px solid var(--line); border-radius: 4px; }
.faq-list summary i::before,
.faq-list summary i::after {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 8px;
  height: 1.5px;
  content: "";
  background: var(--blue);
  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 18px 16px; margin: 0; color: var(--muted); font-size: 13px; line-height: 1.85; }

/* reviews: single column with left rail */
.reviews { padding: 74px 0 80px; }
.review-list { padding: 0; margin: 0; list-style: none; border-top: 1px solid var(--line); }
.review-card {
  display: grid;
  grid-template-columns: 190px minmax(0, 1fr);
  gap: 6px 26px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}
.review-meta { display: flex; flex-direction: column; gap: 4px; }
.review-meta b { color: var(--blue); font-size: 13px; font-weight: 900; }
.review-meta time { color: #748a9d; font-family: var(--mono); font-size: 10px; }
.review-card p { margin: 0; color: #b8cad9; font-size: 13.5px; line-height: 1.8; }

/* steps: horizontal with connectors */
.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: 18px; padding: 0; margin: 0; list-style: none; counter-reset: step; }
.step-list li { position: relative; padding: 22px 22px 22px 66px; border: 1px solid var(--line); border-radius: 6px; background: var(--panel); }
.step-list li + li::before {
  position: absolute;
  top: 50%;
  left: -19px;
  width: 19px;
  height: 1px;
  content: "";
  background: var(--line);
}
.step-list span {
  position: absolute;
  top: 22px;
  left: 18px;
  color: var(--blue);
  font-family: var(--mono);
  font-size: 20px;
  font-weight: 700;
  line-height: 1;
}
.step-list h3 { margin: 0 0 6px; font-size: 16.5px; font-weight: 900; }
.step-list p { margin: 0; color: var(--muted); font-size: 12.8px; line-height: 1.8; }

/* download */
.download { padding: 26px 0; }
.download-inner {
  padding: 52px clamp(24px, 5vw, 60px) 44px;
  border: 1px solid rgba(79, 179, 255, .35);
  border-radius: 10px;
  background:
    radial-gradient(420px 220px at 12% 0%, rgba(79, 179, 255, .3), transparent 70%),
    linear-gradient(150deg, #123a55, #0b2032 78%);
  text-align: center;
}
.download .eyebrow { justify-content: center; }
.download h2 { max-width: 680px; margin: 0 auto; }
.download-inner > p { max-width: 520px; margin: 13px auto 24px; color: #a7c0d3; font-size: 14px; }
.download-notes { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 20px; padding: 22px 0 0; margin: 28px 0 0; border-top: 1px solid rgba(79, 179, 255, .18); list-style: none; }
.download-notes li { color: #9db5c8; font-family: var(--mono); font-size: 11px; }
.download-notes li::before { margin-right: 8px; content: "›"; color: var(--blue); }

/* footer */
.site-footer { padding: 42px 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: #a9bdcd; font-size: 12px; }
.footer-nav a:hover { color: var(--blue); }
.footer-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 20px; margin-top: 22px; 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: #748a9d; font-size: 11.5px; line-height: 1.8; }

/* responsive */
@media (max-width: 1100px) {
  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 960px) {
  .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 { display: flex; flex-direction: column; padding: 30px 0 44px; }
  .hero-copy { order: 1; }
  .console { order: 2; width: 100%; max-width: 420px; }
  .faq-list { grid-template-columns: 1fr; }
  .step-list { grid-template-columns: 1fr; }
  .step-list li + li::before { display: none; }
  .review-card { grid-template-columns: 150px minmax(0, 1fr); }
}
@media (max-width: 640px) {
  .page-shell, .nav-shell { width: calc(100% - 32px); }
  .hero h1 { font-size: clamp(44px, 14vw, 62px); }
  .hero-lead { font-size: 14px; }
  .search-strip { margin-top: 24px; padding-left: 14px; gap: 8px; }
  .search-ph { font-size: 12px; }
  .search-tag { display: none; }
  .search-go { padding: 5px 12px; font-size: 11px; }
  .console { max-width: none; }
  .console img { aspect-ratio: 4 / 3; }
  .feature-grid { grid-template-columns: 1fr; }
  .poster-row { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .poster-card figcaption { padding: 10px 2px 12px; gap: 6px; }
  .poster-card figcaption span { font-size: 12px; }
  .poster-card figcaption small { font-size: 10px; }
  .section-heading-split { grid-template-columns: 1fr; gap: 10px; }
  .section-heading-split > p:last-child { margin: 0; }
  .review-card { grid-template-columns: 1fr; gap: 4px; }
  .review-meta { flex-direction: row; align-items: baseline; gap: 10px; }
  .download-notes li { font-size: 10.5px; }
  .footer-grid { grid-template-columns: 1fr; }
}
@media (max-width: 430px) {
  .nav-shell { gap: 8px; }
  .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: 44px; }
  .button { width: 100%; }
}