:root {
  --ink: #edf2e9;
  --muted: #a0aea4;
  --dim: #92a095;
  --bg: #101413;
  --panel: #191f1c;
  --panel-2: #20291f;
  --line: #303b33;
  --green: #c1f17c;
  --orange: #e9bb7b;
  --max: 1160px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 28px; }
body { margin: 0; color: var(--ink); background: var(--bg); font-family: 'Microsoft YaHei UI', 'Microsoft YaHei', system-ui, sans-serif; font-size: 15px; line-height: 1.8; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
a, button { -webkit-tap-highlight-color: transparent; }
a:focus-visible, button:focus-visible, video:focus-visible { outline: 2px solid var(--green); outline-offset: 6px; border-radius: 4px; }
::selection { color: var(--bg); background: var(--green); }
.container { width: min(var(--max), calc(100% - 64px)); margin-inline: auto; }
.skip-link { position: fixed; top: 12px; left: 12px; z-index: 10; padding: 10px 20px; color: var(--bg); background: var(--green); transform: translateY(-160%); }
.skip-link:focus { transform: translateY(0); }
.site-header { min-height: 100px; display: flex; align-items: center; justify-content: space-between; gap: 28px; border-bottom: 1px solid var(--line); }
.brand { display: inline-flex; gap: 12px; align-items: center; flex-shrink: 0; }
.brand-mark { width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; gap: 3px; border-radius: 10px; background: var(--green); }
.brand-mark i { width: 4px; height: 14px; border-radius: 1px; background: var(--bg); }
.brand-mark i:nth-child(2) { height: 23px; }
.brand-mark i:nth-child(3) { height: 29px; }
.brand-mark i:nth-child(4) { height: 18px; }
.brand strong { display: block; font-size: 17px; line-height: 1.4; letter-spacing: .04em; }
.brand small { display: block; color: var(--dim); font-size: 9px; letter-spacing: .19em; }
.site-nav { display: flex; align-items: center; gap: 32px; color: var(--muted); font-size: 13px; }
.site-nav a, .footer-links a, .text-link { transition: color .2s; }
.site-nav a:hover, .footer-links a:hover, .text-link:hover { color: var(--green); }
.nav-account { flex-shrink: 0; padding: 8px 17px; border: 1px solid var(--line); border-radius: 7px; font-size: 13px; }
.nav-account span { padding-left: 12px; color: var(--green); }
.nav-account:hover { background: var(--panel); border-color: var(--muted); }
h1, h2, h3, p { margin-top: 0; }
h1, h2 { font-weight: 600; letter-spacing: -.05em; line-height: 1.3; }
h1 em, h2 em { color: var(--green); font-style: normal; }
h1 { margin-bottom: 24px; font-size: clamp(40px, 5.2vw, 68px); }
h2 { margin-bottom: 22px; font-size: clamp(30px, 3.25vw, 44px); }
.eyebrow { margin: 0 0 20px; color: var(--green); font-size: 10px; font-weight: 600; letter-spacing: .16em; line-height: 1.6; }
.eyebrow-dot { display: inline-block; width: 6px; height: 6px; margin: 0 9px 1px 0; border-radius: 50%; background: var(--green); }
.hero { padding: 68px 0 0; text-align: center; }
.hero-copy { margin: 0 auto 52px; }
.hero-badge { display: inline-flex; align-items: center; padding: 6px 8px 6px 14px; border: 1px solid var(--line); border-radius: 30px; color: var(--muted); letter-spacing: .06em; font-size: 11px; margin-bottom: 27px; }
.badge-version { margin-left: 15px; padding: 0 9px; border-radius: 20px; color: var(--green); background: #293721; font-family: Consolas, monospace; }
.hero-lede { margin-bottom: 28px; color: var(--muted); font-size: 16px; line-height: 1.9; }
.hero-actions { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 12px; }
.download-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 12px; min-height: 50px; padding: 0 24px; border: 1px solid transparent; border-radius: 8px; font-size: 14px; font-weight: 600; transition: background .2s, border-color .2s, transform .2s; }
.button-primary { color: #182210; background: var(--green); }
.button-primary:hover { background: #d4ffa0; transform: translateY(-2px); }
.button span { font-size: 21px; line-height: 1; }
.button-secondary { background: var(--panel); border-color: var(--line); color: var(--ink); }
.button-secondary:hover { background: #29312b; border-color: #53604f; }
.hero-meta { display: flex; flex-wrap: wrap; justify-content: center; gap: 22px; margin-top: 20px; color: var(--dim); font-size: 11px; }
.hero-meta span::before { content: '✓'; color: var(--green); margin-right: 6px; }
.hero-visual { max-width: 1040px; margin-inline: auto; padding: 12px 12px 0; border: 1px solid #43543a; border-radius: 14px 14px 0 0; background: #20291f; box-shadow: 0 0 90px #a2c76c0a, 0 30px 70px #0003; }
.preview-heading { display: flex; justify-content: space-between; gap: 12px; padding: 0 5px 12px; color: var(--muted); font-size: 11px; }
.preview-heading > span:first-child { color: var(--ink); }
.screen-frame { overflow: hidden; border: 1px solid var(--line); border-radius: 6px; background: var(--bg); }
.screen-frame img { display: block; width: 100%; height: auto; }
.preview-caption { display: flex; justify-content: center; gap: 36px; padding: 14px 0; color: var(--muted); font-size: 11px; }
.preview-caption span::before { content: '+'; margin-right: 9px; color: var(--green); }
.feature-strip { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 48px; padding: 24px 0; border-block: 1px solid var(--line); }
.feature-strip div { display: flex; flex-direction: column; align-items: center; gap: 4px; border-right: 1px solid var(--line); }
.feature-strip div:last-child { border: 0; }
.feature-strip strong { color: var(--ink); font-family: Consolas, monospace; font-size: 28px; font-weight: 400; line-height: 1.5; letter-spacing: -.05em; }
.feature-strip span { color: var(--dim); font-size: 12px; }
.section { padding: 100px 0; }
.section-heading > p:last-child, .keyboard-copy > p:last-child { max-width: 590px; margin-bottom: 0; color: var(--muted); }
.video-section { padding-bottom: 0; }
.video-heading { display: flex; justify-content: space-between; align-items: flex-end; gap: 28px; margin-bottom: 32px; }
.video-badge { flex-shrink: 0; padding: 7px 14px; border: 1px solid var(--line); border-radius: 20px; color: var(--muted); font: 12px/1.8 Consolas, 'Microsoft YaHei', sans-serif; }
.video-badge span { margin: 0 8px; color: var(--green); }
.video-figure { margin: 0; padding: 8px; background: var(--panel); border: 1px solid var(--line); border-radius: 12px; }
.video-stage { position: relative; overflow: hidden; border-radius: 7px; }
.video-figure video { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; background: #000; }
.video-start { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: max-content; max-width: calc(100% - 24px); padding: 16px 24px; border: 1px solid #c1f17c88; border-radius: 9px; background: #101413ed; color: var(--green); font-size: 16px; font-weight: 600; cursor: pointer; box-shadow: 0 8px 35px #0006; }
.video-start span { margin-right: 9px; }
.video-start[hidden] { display: none; }
.video-start:hover { background: #293721; }
.video-figure figcaption { display: flex; justify-content: space-between; gap: 18px; padding: 15px 12px 3px; color: var(--muted); font-size: 12px; }
.video-figure figcaption a { flex-shrink: 0; color: var(--green); }
.video-figure a:hover { text-decoration: underline; }
.video-status { margin: 4px 12px 8px; color: var(--dim); font-size: 11px; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 38px; }
.feature-card { position: relative; overflow: hidden; min-height: 380px; padding: 28px; border: 1px solid var(--line); border-radius: 10px; background: var(--panel); }
.feature-card-large { background: var(--panel-2); border-color: #43543a; }
.card-icon { display: grid; place-items: center; width: 38px; height: 38px; margin-bottom: 28px; border: 1px solid #4c5d40; border-radius: 9px; color: var(--green); font-size: 22px; }
.card-index { margin-bottom: 12px; color: var(--dim); font-size: 10px; letter-spacing: .08em; }
.feature-card h3 { margin-bottom: 16px; font-size: 25px; font-weight: 500; line-height: 1.45; }
.feature-card h3 br { display: none; }
.feature-card > p:last-of-type { margin-bottom: 70px; color: var(--muted); font-size: 13px; }
.mini-staff { position: absolute; right: 28px; bottom: 28px; left: 28px; height: 40px; background: repeating-linear-gradient(to bottom, transparent 0 9px, #c1f17c15 9px 10px); }
.mini-staff span, .mini-staff b { position: absolute; width: 30px; height: 5px; border-radius: 2px; background: var(--green); opacity: .7; }
.mini-staff span:nth-child(1) { left: 3%; top: 20px; }.mini-staff span:nth-child(2) { left: 23%; top: 30px; }.mini-staff span:nth-child(3) { left: 43%; top: 10px; }.mini-staff span:nth-child(4) { left: 63%; top: 20px; }.mini-staff span:nth-child(5) { left: 83%; top: 0; }.mini-staff b { left: 18%; top: 0; width: 1px; height: 40px; background: var(--orange); }
.key-line { position: absolute; left: 28px; right: 28px; bottom: 28px; display: flex; align-items: center; gap: 8px; color: var(--dim); font-size: 10px; }
kbd { display: inline-grid; place-items: center; min-width: 28px; height: 28px; border: 1px solid #536348; border-radius: 5px; color: var(--green); background: var(--bg); font: 12px Consolas, monospace; }
.progress-demo { position: absolute; left: 28px; right: 28px; bottom: 40px; height: 5px; border-radius: 4px; background: var(--line); }
.progress-demo span { display: block; width: 67%; height: 100%; background: var(--green); border-radius: inherit; }
.progress-demo span::after { content: ''; float: right; width: 11px; height: 11px; margin-top: -3px; border-radius: 50%; background: var(--green); }
.section-guide { background: #151b17; border-block: 1px solid var(--line); }
.guide-layout { display: grid; grid-template-columns: 1fr 1.1fr; gap: 100px; }
.steps { margin: 0; padding: 0; list-style: none; }
.steps li { display: grid; grid-template-columns: 42px 1fr; gap: 20px; padding: 0 0 25px; margin-bottom: 25px; border-bottom: 1px solid var(--line); }
.steps li:last-child { margin-bottom: 0; }
.step-number { color: var(--green); font: 20px/1.7 Consolas, monospace; }
.steps h3 { margin: 0 0 7px; font-size: 18px; font-weight: 500; }
.steps p { margin: 0; color: var(--muted); font-size: 13px; }
.guide-links { display: flex; gap: 24px; margin-top: 30px; color: var(--green); font-size: 13px; }
.guide-links a { border-bottom: 1px solid #536348; padding-bottom: 3px; }
.guide-links span { margin-left: 12px; }
.keyboard-section { display: grid; grid-template-columns: .9fr 1.1fr; gap: 70px; align-items: center; }
.keyboard { display: grid; grid-template-columns: repeat(8, 1fr); gap: 6px; }
.key { min-height: 115px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 15px; border: 1px solid var(--line); border-bottom: 3px solid #45523b; border-radius: 7px; background: var(--panel); }
.key kbd { min-width: 24px; border: none; background: transparent; color: var(--ink); font-size: 22px; }
.key span { color: var(--dim); font-size: 10px; }
.key-accent { background: var(--green); border-color: var(--green); border-bottom-color: #829e57; }
.key-accent kbd, .key-accent span { color: #243016; }
.caution-section { padding: 72px 0; background: #191e18; border-block: 1px solid var(--line); }
.caution-layout { display: grid; grid-template-columns: .9fr 1.1fr; gap: 70px; align-items: center; }
.caution-copy h2 { font-size: 34px; }
.caution-copy > p:not(.eyebrow) { color: var(--muted); font-size: 14px; }
.caution-steps { padding: 0; margin: 25px 0 0; list-style: none; border-top: 1px solid var(--line); }
.caution-steps li { display: flex; gap: 20px; align-items: center; min-height: 49px; border-bottom: 1px solid var(--line); }
.caution-steps span { color: var(--green); font: 12px Consolas, monospace; }
.caution-steps strong { font-size: 13px; font-weight: 400; }
.caution-figure { margin: 0; padding: 7px 7px 0; border: 1px solid var(--line); border-radius: 9px; background: var(--bg); }
.caution-figure img { display: block; width: 100%; height: auto; border-radius: 4px; }
.caution-figure figcaption { padding: 10px 5px; color: var(--muted); font-size: 11px; }
.risk-section { padding: 86px 0; }
.risk-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 70px; }
.risk-heading h2 { font-size: 32px; }
.risk-heading h2 em { color: var(--ink); }
.risk-heading .eyebrow { color: var(--orange); }
.risk-heading .eyebrow-dot { background: var(--orange); }
.risk-heading > p:not(.eyebrow) { color: var(--muted); font-size: 13px; }
.risk-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px 28px; }
.risk-card { padding: 20px 0 0; border-top: 1px solid #e9bb7b40; }
.risk-card > span { color: var(--orange); font: 12px Consolas, monospace; }
.risk-card h3 { margin: 10px 0 8px; font-size: 16px; font-weight: 500; }
.risk-card p { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.9; }
.disclaimer { display: grid; grid-template-columns: 110px 1fr; gap: 30px; margin-top: 45px; padding-top: 24px; border-top: 1px solid var(--line); }
.disclaimer strong { color: var(--muted); font-size: 12px; font-weight: 400; }
.disclaimer p { margin: 0; color: var(--dim); font-size: 11px; line-height: 1.9; }
.download-section { padding: 0 0 76px; }
.download-card { display: grid; grid-template-columns: 1.2fr .8fr; gap: 48px; padding: 48px; border: 1px solid #556a42; border-radius: 12px; background: #26321f; }
.download-card h2 { font-size: 36px; }
.download-card h2 span { margin-left: 8px; color: var(--green); font: 14px Consolas, monospace; letter-spacing: 0; vertical-align: middle; }
.download-main > p:not(.eyebrow) { margin-bottom: 26px; color: var(--muted); font-size: 14px; }
.download-details { display: grid; grid-template-columns: 1fr 1fr; align-content: center; gap: 12px 24px; padding-left: 32px; border-left: 1px solid #526143; }
.download-details div { padding: 12px 0; border-bottom: 1px solid #526143; }
.download-details span, .download-details strong { display: block; }
.download-details span { color: var(--muted); font-size: 11px; }
.download-details strong { margin-top: 4px; font-size: 12px; font-weight: 500; }
.download-note { margin: 13px 0 0; color: var(--dim); font-size: 11px; }
.site-footer { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 27px 0 36px; border-top: 1px solid var(--line); color: var(--dim); font-size: 11px; }
.site-footer strong { margin-right: 15px; color: var(--muted); font-size: 13px; }
.footer-links { display: flex; gap: 22px; }

@media (max-width: 960px) {
  .site-nav { gap: 18px; }
  .guide-layout, .keyboard-section, .caution-layout, .risk-layout { gap: 38px; }
  .feature-card { padding: 22px; }
  .feature-card h3 { font-size: 21px; }
  .key-line { left: 22px; right: 22px; gap: 4px; }
  .keyboard-section { grid-template-columns: 1fr; }
  .keyboard { max-width: 650px; width: 100%; }
  .download-card { gap: 25px; padding: 32px; }
}
@media (max-width: 720px) {
  .container { width: calc(100% - 36px); }
  .site-header { min-height: 0; display: grid; grid-template-columns: 1fr auto; gap: 18px; padding: 20px 0 16px; }
  .brand strong { font-size: 15px; }
  .brand-mark { width: 36px; height: 36px; border-radius: 8px; }
  .nav-account { padding: 6px 12px; font-size: 12px; }
  .site-nav { grid-row: 2; grid-column: 1 / -1; justify-content: space-between; gap: 12px; font-size: 12px; }
  .hero { padding-top: 42px; }
  .hero-copy { margin-bottom: 34px; }
  h1 { font-size: clamp(28px, 6.3vw, 45px); letter-spacing: -.05em; line-height: 1.45; }
  .hero-badge { font-size: 10px; margin-bottom: 20px; }
  .hero-lede { max-width: 460px; margin-inline: auto; font-size: 13px; }
  .button { min-height: 46px; padding: 0 17px; font-size: 12px; gap: 8px; }
  .hero-meta { gap: 12px; font-size: 10px; }
  .hero-visual { padding: 6px 6px 0; border-radius: 9px 9px 0 0; }
  .preview-heading { font-size: 9px; padding: 3px 2px 9px; }
  .preview-caption { gap: 16px; font-size: 9px; padding: 10px 0; }
  .preview-caption span::before { display: none; }
  .feature-strip { margin-top: 28px; grid-template-columns: repeat(2, 1fr); padding: 0; }
  .feature-strip div { padding: 17px 0; }
  .feature-strip div:nth-child(2) { border-right: none; }
  .feature-strip div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .feature-strip strong { font-size: 24px; }
  .feature-strip span { font-size: 11px; }
  .section { padding: 68px 0; }
  .video-section { padding-bottom: 0; }
  h2 { font-size: 29px; }
  .eyebrow { margin-bottom: 15px; font-size: 9px; }
  .section-heading > p:last-child, .keyboard-copy > p:last-child { font-size: 13px; }
  .video-heading { flex-direction: column; align-items: flex-start; gap: 18px; margin-bottom: 22px; }
  .video-figure { padding: 5px; }
  .video-start { padding: 11px 17px; font-size: 13px; }
  .video-figure figcaption { flex-direction: column; gap: 6px; font-size: 11px; padding: 11px 8px 3px; }
  .video-status { margin-inline: 8px; font-size: 10px; }
  .feature-grid { grid-template-columns: 1fr; gap: 12px; margin-top: 28px; }
  .feature-card { min-height: 285px; padding: 24px; }
  .card-icon { float: right; margin: 0; }
  .card-index { margin-top: 8px; margin-bottom: 22px; }
  .feature-card h3 { font-size: 24px; }
  .feature-card > p:last-of-type { margin-bottom: 65px; }
  .key-line { left: 24px; gap: 10px; }
  .guide-layout, .caution-layout, .risk-layout { grid-template-columns: 1fr; gap: 32px; }
  .steps li { grid-template-columns: 30px 1fr; gap: 15px; }
  .keyboard { gap: 5px; }
  .key { min-height: 90px; gap: 10px; }
  .key kbd { font-size: 18px; }
  .key span { font-size: 8px; }
  .caution-section { padding: 60px 0; }
  .caution-copy h2, .risk-heading h2 { font-size: 29px; }
  .risk-section { padding: 64px 0; }
  .risk-grid { gap: 20px; }
  .disclaimer { grid-template-columns: 1fr; gap: 8px; margin-top: 32px; }
  .download-section { padding-bottom: 52px; }
  .download-card { grid-template-columns: 1fr; padding: 25px; gap: 28px; }
  .download-card h2 { font-size: 28px; }
  .download-card h2 span { font-size: 12px; }
  .download-details { padding: 15px 0 0; border-left: 0; border-top: 1px solid #526143; gap: 4px 20px; }
  .site-footer { flex-direction: column; align-items: flex-start; gap: 14px; }
  .footer-links { flex-wrap: wrap; gap: 10px 18px; }
}
@media (max-width: 370px) {
  .hero-actions { flex-direction: column; }
  .hero-actions .button { width: 100%; }
  .preview-heading { flex-direction: column; gap: 2px; }
  .hero-meta { gap: 6px; }
  .risk-grid { grid-template-columns: 1fr; }
  .download-card { padding: 20px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
  .button-primary:hover { transform: none; }
}