:root {
  --bg: #07090f;
  --bg-soft: #0b0f18;
  --panel: rgba(16, 22, 35, .78);
  --panel-solid: #101623;
  --line: rgba(154, 184, 224, .16);
  --line-bright: rgba(111, 231, 255, .35);
  --text: #f3f7ff;
  --muted: #94a2b8;
  --cyan: #62e5ff;
  --cyan-deep: #13b8e8;
  --violet: #aa83ff;
  --violet-deep: #7b54ff;
  --green: #72f3bb;
  --container: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 15% 8%, rgba(19, 184, 232, .08), transparent 28rem),
    radial-gradient(circle at 88% 30%, rgba(123, 84, 255, .07), transparent 32rem),
    var(--bg);
  font-family: "Segoe UI", "Microsoft YaHei UI", "Microsoft YaHei", sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
img { max-width: 100%; }
.container { width: min(var(--container), calc(100vw - 40px)); margin-inline: auto; }
.skip-link { position: fixed; top: -60px; left: 16px; z-index: 100; padding: 10px 16px; background: var(--cyan); color: #021015; border-radius: 8px; }
.skip-link:focus { top: 12px; }

.site-header { position: sticky; top: 0; z-index: 50; border-bottom: 1px solid var(--line); background: rgba(7, 9, 15, .82); backdrop-filter: blur(20px); }
.header-inner { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 12px; font-size: 17px; font-weight: 800; letter-spacing: .12em; }
.brand b { color: var(--cyan); }
.brand-mark { position: relative; width: 31px; height: 27px; display: inline-block; }
.brand-mark i { position: absolute; inset: 0; border: 1px solid var(--cyan); transform: skewY(-18deg); }
.brand-mark i:nth-child(2) { transform: translate(5px, -3px) skewY(-18deg); opacity: .5; }
.brand-mark i:nth-child(3) { transform: translate(10px, -6px) skewY(-18deg); opacity: .2; }
nav { display: flex; align-items: center; gap: 26px; color: #b8c2d2; font-size: 14px; }
nav a, .footer-links a { transition: color .2s ease; }
nav a:hover, nav a:focus-visible, .footer-links a:hover { color: var(--cyan); }
.header-cta { padding: 9px 16px; border: 1px solid var(--line-bright); border-radius: 999px; color: var(--cyan); font-size: 13px; font-weight: 700; }

.hero { position: relative; isolation: isolate; overflow: hidden; min-height: 720px; display: grid; align-items: center; border-bottom: 1px solid var(--line); }
.hero::before { content: ""; position: absolute; inset: 0; z-index: -2; opacity: .22; background-image: linear-gradient(rgba(98,229,255,.13) 1px, transparent 1px), linear-gradient(90deg, rgba(98,229,255,.13) 1px, transparent 1px); background-size: 72px 72px; mask-image: linear-gradient(to bottom, black, transparent 88%); }
.hero-glow { position: absolute; z-index: -1; width: 420px; height: 420px; border-radius: 50%; filter: blur(100px); opacity: .14; }
.glow-one { background: var(--cyan); left: -160px; top: 60px; }
.glow-two { background: var(--violet); right: -180px; bottom: -100px; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(430px, .95fr); align-items: center; gap: 72px; padding-block: 90px; }
.eyebrow, .kicker { margin: 0 0 18px; color: var(--cyan); font-size: 12px; font-weight: 800; letter-spacing: .2em; }
.eyebrow { display: flex; align-items: center; gap: 9px; }
.eyebrow span { width: 7px; height: 7px; background: var(--green); border-radius: 50%; box-shadow: 0 0 14px var(--green); }
h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 24px; font-size: clamp(46px, 5.2vw, 76px); line-height: 1.08; letter-spacing: -.045em; }
h1 em { color: transparent; font-style: normal; background: linear-gradient(90deg, var(--cyan), #c2eeff 45%, var(--violet)); background-clip: text; -webkit-background-clip: text; }
.hero-lead { max-width: 680px; margin-bottom: 30px; color: #aab7ca; font-size: 18px; }
.hero-actions, .support-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.button { min-height: 46px; display: inline-flex; align-items: center; justify-content: center; gap: 18px; padding: 0 20px; border: 1px solid var(--line); border-radius: 10px; font-size: 14px; font-weight: 800; transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease; }
.button:hover { transform: translateY(-2px); }
.button:focus-visible, summary:focus-visible, a:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }
.button.primary { color: #031016; background: linear-gradient(135deg, var(--cyan), #7af2d3); border-color: transparent; box-shadow: 0 14px 40px rgba(30, 205, 238, .16); }
.button.secondary { background: rgba(255,255,255,.03); color: #d8e2f1; }
.button.secondary:hover { border-color: var(--line-bright); }
.button.large { min-width: 212px; min-height: 54px; }
.hero-meta { display: flex; gap: 34px; margin: 44px 0 0; padding: 0; list-style: none; }
.hero-meta li { display: grid; gap: 2px; }
.hero-meta strong { font-size: 22px; line-height: 1.2; letter-spacing: -.02em; }
.hero-meta span { color: var(--muted); font-size: 12px; }

.hero-visual { position: relative; min-height: 510px; border: 1px solid var(--line); border-radius: 24px; background: linear-gradient(145deg, rgba(15,23,37,.9), rgba(5,8,14,.65)); box-shadow: inset 0 0 80px rgba(98,229,255,.035), 0 40px 90px rgba(0,0,0,.35); overflow: hidden; }
.hero-visual::after { content: ""; position: absolute; inset: 0; pointer-events: none; background: linear-gradient(120deg, rgba(255,255,255,.06), transparent 27%); }
.visual-label { position: absolute; top: 22px; left: 24px; display: flex; align-items: center; gap: 8px; color: #8f9caf; font: 700 10px/1 "Segoe UI", sans-serif; letter-spacing: .17em; }
.visual-label span { width: 6px; height: 6px; border-radius: 50%; background: var(--green); box-shadow: 0 0 12px var(--green); }
.cave-stage { position: absolute; left: 50%; top: 50%; width: 330px; height: 270px; transform: translate(-50%, -45%) perspective(720px) rotateX(5deg); transform-style: preserve-3d; animation: stage-float 6s ease-in-out infinite; }
.cave-panel { position: absolute; border: 1px solid rgba(98,229,255,.75); background-color: rgba(23, 145, 186, .04); box-shadow: inset 0 0 32px rgba(98,229,255,.06), 0 0 18px rgba(98,229,255,.08); overflow: hidden; }
.cave-panel i { position: absolute; inset: 0; background-image: linear-gradient(rgba(98,229,255,.22) 1px, transparent 1px), linear-gradient(90deg, rgba(98,229,255,.22) 1px, transparent 1px); background-size: 30px 30px; }
.panel-center { width: 220px; height: 150px; left: 55px; top: 34px; transform: translateZ(-22px); }
.panel-center b { position: absolute; left: 50%; top: 50%; transform: translate(-50%,-50%); z-index: 2; color: rgba(98,229,255,.82); font-size: 25px; letter-spacing: .28em; text-shadow: 0 0 24px rgba(98,229,255,.8); }
.panel-left { width: 115px; height: 150px; left: -42px; top: 34px; transform-origin: right center; transform: rotateY(61deg); }
.panel-right { width: 115px; height: 150px; right: -42px; top: 34px; transform-origin: left center; transform: rotateY(-61deg); }
.panel-floor { width: 220px; height: 120px; left: 55px; top: 183px; transform-origin: top center; transform: rotateX(68deg); border-color: rgba(170,131,255,.7); }
.panel-floor i { background-image: linear-gradient(rgba(170,131,255,.2) 1px, transparent 1px), linear-gradient(90deg, rgba(170,131,255,.2) 1px, transparent 1px); }
.axis { position: absolute; z-index: 5; font: 700 9px/1 monospace; }
.axis-x { right: 9px; bottom: 60px; color: #ff718b; }
.axis-y { left: 48%; top: 0; color: #70efb3; }
.axis-z { left: 19px; bottom: 40px; color: #62bfff; }
.camera-dot { position: absolute; left: 50%; bottom: -17px; width: 8px; height: 8px; border-radius: 50%; background: var(--violet); box-shadow: 0 0 15px var(--violet); }
.camera-ray { position: absolute; left: 50%; bottom: -13px; width: 1px; height: 210px; background: linear-gradient(var(--violet), transparent); transform-origin: bottom; opacity: .45; }
.ray-one { transform: rotate(31deg); }.ray-two { transform: rotate(-31deg); }
.visual-stats { position: absolute; left: 24px; right: 24px; bottom: 20px; display: flex; justify-content: space-between; padding-top: 14px; border-top: 1px solid var(--line); color: #6f7b8e; font: 700 9px/1 monospace; letter-spacing: .1em; }

.signal-strip { overflow: hidden; border-bottom: 1px solid var(--line); background: #090c13; }
.signal-row { min-height: 54px; display: flex; align-items: center; justify-content: space-between; gap: 20px; color: #7e8a9c; font-size: 11px; font-weight: 700; letter-spacing: .08em; white-space: nowrap; }
.signal-row i { width: 3px; height: 3px; border-radius: 50%; background: var(--cyan); opacity: .7; }

.section { padding-block: 112px; }
.section-heading { max-width: 760px; margin-bottom: 52px; }
.section-heading.compact { margin-bottom: 36px; }
.section-heading h2, .support h2 { margin-bottom: 16px; font-size: clamp(34px, 4vw, 52px); line-height: 1.13; letter-spacing: -.035em; }
.section-heading > p:last-child { color: var(--muted); font-size: 17px; }
.tool-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.tool-card { position: relative; padding: 36px; border: 1px solid var(--line); border-radius: 20px; background: linear-gradient(145deg, rgba(17,24,38,.93), rgba(10,14,23,.84)); overflow: hidden; }
.tool-card::after { content: ""; position: absolute; width: 210px; height: 210px; top: -110px; right: -80px; border-radius: 50%; filter: blur(20px); opacity: .08; }
.cyan-card::after { background: var(--cyan); }.violet-card::after { background: var(--violet); }
.tool-card:hover { border-color: rgba(154,184,224,.3); }
.tool-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 42px; }
.tool-index { color: #56647a; font: 700 12px/1 monospace; }
.version, .release-badge, .file-type { border-radius: 999px; font-size: 10px; font-weight: 800; letter-spacing: .1em; }
.version { padding: 6px 10px; border: 1px solid var(--line); color: #b3c0d3; }
.tool-type { margin-bottom: 8px; color: var(--cyan); font-size: 10px; font-weight: 800; letter-spacing: .19em; }
.violet-card .tool-type { color: var(--violet); }
.tool-card h3 { margin-bottom: 14px; font-size: 30px; letter-spacing: -.025em; }
.tool-summary { min-height: 58px; color: var(--muted); }
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 26px 0; }
.tag-row span { padding: 5px 10px; border: 1px solid var(--line); border-radius: 6px; color: #aeb9c9; font-size: 11px; }
.check-list { display: grid; gap: 11px; margin: 0 0 30px; padding: 0; list-style: none; color: #c3cddd; font-size: 14px; }
.check-list li::before { content: "+"; margin-right: 10px; color: var(--cyan); font-family: monospace; }
.violet-card .check-list li::before { color: var(--violet); }
.text-link { color: var(--cyan); font-size: 13px; font-weight: 800; }
.violet-card .text-link { color: var(--violet); }

.capabilities { border-block: 1px solid var(--line); background: rgba(8,12,20,.65); }
.feature-block { display: grid; grid-template-columns: .72fr 1.28fr; gap: 76px; align-items: start; padding: 58px 0; border-top: 1px solid var(--line); }
.feature-block.reverse { grid-template-columns: .72fr 1.28fr; }
.feature-no { display: inline-block; margin-bottom: 20px; color: var(--cyan); font: 800 10px/1 monospace; letter-spacing: .15em; }
.feature-no.violet { color: var(--violet); }
.feature-intro h3 { margin-bottom: 14px; font-size: 30px; line-height: 1.2; }
.feature-intro p { color: var(--muted); }
.feature-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.mini-card { min-height: 158px; padding: 22px; border: 1px solid var(--line); border-radius: 14px; background: rgba(255,255,255,.018); }
.mini-card b { display: block; margin-bottom: 10px; font-size: 15px; }
.mini-card p { margin: 0; color: var(--muted); font-size: 13px; }

.workflow { overflow: hidden; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); margin: 0; padding: 0; list-style: none; border: 1px solid var(--line); border-radius: 18px; background: var(--panel); }
.steps li { position: relative; display: grid; grid-template-columns: auto 1fr; gap: 17px; padding: 30px; }
.steps li + li { border-left: 1px solid var(--line); }
.steps > li > span { color: var(--cyan); font: 800 11px/1.4 monospace; }
.steps b { display: block; margin-bottom: 8px; }
.steps p { margin: 0; color: var(--muted); font-size: 13px; }

.download-section { position: relative; border-block: 1px solid var(--line); background: linear-gradient(180deg, rgba(21,13,42,.36), rgba(4,12,20,.3)); }
.download-shell { padding: 48px; border: 1px solid rgba(170,131,255,.25); border-radius: 26px; background: rgba(10,14,24,.78); box-shadow: 0 30px 100px rgba(0,0,0,.28); }
.download-heading { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: end; margin-bottom: 34px; }
.download-heading .kicker { grid-column: 1 / -1; margin-bottom: -10px; color: var(--violet); }
.download-heading h2 { margin: 0; font-size: clamp(34px, 4vw, 48px); letter-spacing: -.035em; }
.download-heading > p:last-child { margin: 0; color: var(--muted); }
.release-featured { display: grid; grid-template-columns: 1fr auto; gap: 30px; align-items: center; padding: 30px; border: 1px solid var(--line-bright); border-radius: 18px; background: linear-gradient(120deg, rgba(24,48,66,.6), rgba(30,21,57,.45)); }
.release-featured h3 { margin: 12px 0 8px; font-size: 24px; }
.release-featured p { margin-bottom: 14px; color: var(--muted); }
.release-featured ul { display: flex; flex-wrap: wrap; gap: 10px 24px; margin: 0; padding: 0; color: #bfcbdb; list-style: none; font-size: 12px; }
.release-featured li::before { content: "·"; margin-right: 7px; color: var(--cyan); }
.release-badge { padding: 6px 10px; color: var(--cyan); background: rgba(98,229,255,.1); }
.individual-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 14px; }
.individual-grid article { padding: 26px; border: 1px solid var(--line); border-radius: 16px; background: rgba(255,255,255,.018); }
.individual-grid h3 { margin: 13px 0 7px; font-size: 19px; }
.individual-grid p { color: var(--muted); font-size: 13px; }
.individual-grid a { color: var(--cyan); font-size: 13px; font-weight: 800; }
.individual-grid article:nth-child(2) a { color: var(--violet); }
.file-type { color: var(--cyan); }.file-type.violet { color: var(--violet); }
.integrity-row { display: flex; flex-wrap: wrap; gap: 12px 24px; margin-top: 22px; padding-top: 20px; border-top: 1px solid var(--line); color: #778398; font-size: 12px; }
.integrity-row a { color: #b6c2d4; text-decoration: underline; text-underline-offset: 4px; }

.support-grid { display: grid; grid-template-columns: 1fr 360px; gap: 90px; align-items: center; }
.support-copy > p:not(.kicker) { max-width: 650px; margin-bottom: 28px; color: var(--muted); }
.qr-card { display: grid; grid-template-columns: 126px 1fr; gap: 18px; align-items: center; padding: 18px; border: 1px solid var(--line); border-radius: 18px; background: var(--panel); }
.qr-card img { display: block; width: 126px; height: 126px; max-width: 100%; aspect-ratio: 1 / 1; object-fit: contain; border-radius: 10px; background: white; }
.qr-card div { display: grid; min-width: 0; gap: 5px; }
.qr-card span { color: var(--muted); font-size: 12px; }

.faq { border-top: 1px solid var(--line); background: rgba(8,11,18,.7); }
.faq-grid { display: grid; grid-template-columns: .55fr 1.45fr; gap: 80px; align-items: start; }
.faq-list { border-top: 1px solid var(--line); }
details { border-bottom: 1px solid var(--line); }
summary { position: relative; padding: 22px 36px 22px 0; cursor: pointer; list-style: none; font-weight: 700; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 4px; color: var(--cyan); font: 400 22px/1 monospace; }
details[open] summary::after { content: "−"; }
details p { padding: 0 30px 22px 0; color: var(--muted); font-size: 14px; }

footer { border-top: 1px solid var(--line); background: #05070b; }
.footer-inner { min-height: 170px; display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 24px; position: relative; }
.footer-brand { font-weight: 900; letter-spacing: .12em; }
.footer-inner > div:first-child p { margin: 6px 0 0; color: #657187; font-size: 12px; }
.footer-links { display: flex; gap: 22px; color: #8e9aad; font-size: 12px; }
.copyright { position: absolute; left: 0; bottom: 18px; color: #414b5d; font-size: 10px; }

@keyframes stage-float { 0%,100% { transform: translate(-50%, -45%) perspective(720px) rotateX(5deg) rotateY(-1deg); } 50% { transform: translate(-50%, -48%) perspective(720px) rotateX(4deg) rotateY(2deg); } }

@media (max-width: 980px) {
  nav { display: none; }
  .hero { min-height: auto; }
  .hero-grid { grid-template-columns: 1fr; gap: 50px; padding-block: 72px; }
  .hero-copy { max-width: 760px; }
  .hero-visual { min-height: 470px; }
  .feature-block, .feature-block.reverse { grid-template-columns: 1fr; gap: 30px; }
  .support-grid { grid-template-columns: 1fr; gap: 40px; }
  .qr-card { max-width: 430px; }
}

@media (max-width: 720px) {
  .container { width: min(100% - 28px, var(--container)); }
  .header-inner { min-height: 64px; }
  .header-cta { padding: 8px 12px; }
  .hero-grid { padding-block: 58px; }
  h1 { font-size: clamp(40px, 13vw, 58px); }
  .hero-lead { font-size: 16px; }
  .hero-meta { gap: 20px; justify-content: space-between; }
  .hero-visual { min-height: 380px; }
  .cave-stage { transform: translate(-50%, -48%) scale(.77) perspective(720px) rotateX(5deg); }
  .visual-stats span:nth-child(2) { display: none; }
  .signal-row { justify-content: flex-start; overflow: hidden; }
  .section { padding-block: 78px; }
  .tool-grid, .feature-cards, .individual-grid, .download-heading, .faq-grid { grid-template-columns: 1fr; }
  .tool-card { padding: 26px; }
  .tool-summary { min-height: 0; }
  .steps { grid-template-columns: 1fr; }
  .steps li + li { border-left: 0; border-top: 1px solid var(--line); }
  .download-shell { padding: 22px; border-radius: 20px; }
  .download-heading .kicker { grid-column: 1; }
  .release-featured { grid-template-columns: 1fr; padding: 22px; }
  .release-featured .button { width: 100%; }
  .release-featured ul { display: grid; gap: 6px; }
  .qr-card { grid-template-columns: 100px 1fr; }
  .qr-card img { width: 100px; height: 100px; }
  .footer-inner { min-height: 220px; grid-template-columns: 1fr; align-content: center; }
  .footer-links { flex-wrap: wrap; }
}

@media (max-width: 430px) {
  .brand { font-size: 15px; }
  .brand-mark { transform: scale(.85); }
  .header-cta { font-size: 12px; }
  .hero-actions .button { width: 100%; }
  .hero-meta strong { font-size: 18px; }
  .hero-visual { min-height: 330px; }
  .cave-stage { transform: translate(-50%, -50%) scale(.62) perspective(720px) rotateX(5deg); }
  .visual-stats { display: none; }
  .feature-cards { gap: 10px; }
  .mini-card { min-height: 0; }
  .support-actions .button { width: 100%; }
  .qr-card { grid-template-columns: 112px minmax(0, 1fr); text-align: left; }
  .qr-card img { width: 112px; height: 112px; margin: 0; }
}

@media (max-width: 350px) {
  .qr-card { grid-template-columns: 1fr; text-align: center; }
  .qr-card img { width: 140px; height: 140px; margin: auto; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}