:root {
  color-scheme: light;
  --ink: #171717; --muted: #57534e; --paper: #fff; --stone-50: #faf9f7;
  --stone-100: #f3f1ed; --stone-200: #e7e3dc; --red: #f32036; --red-dark: #cf1428;
  --radius: 12px; --radius-lg: 24px; --shadow: 0 28px 70px rgb(32 21 18 / .14);
  font-family: "Avenir Next", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--ink); background: var(--paper); font-synthesis: none;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; background: var(--paper); }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
img { display: block; max-width: 100%; }
p, h1, h2, h3 { text-wrap: pretty; }
.section-shell { width: min(1200px, calc(100% - 48px)); margin-inline: auto; }

.site-header { position: sticky; top: 0; z-index: 20; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; min-height: 76px; padding: 12px max(24px, calc((100vw - 1200px) / 2)); border-bottom: 1px solid rgb(231 227 220 / .9); background: rgb(255 255 255 / .9); backdrop-filter: blur(18px); }
.brand { display: inline-flex; align-items: center; gap: 10px; width: max-content; }
.brand img { border-radius: 13px; }
.brand span { display: grid; line-height: 1.15; }
.brand strong { font-size: 16px; letter-spacing: -.02em; }
.brand small { margin-top: 4px; color: var(--muted); font-size: 11px; }
.site-header nav { display: flex; gap: 32px; color: var(--muted); font-size: 14px; }
.site-header nav a:hover { color: var(--ink); }
.site-header > .button { justify-self: end; }

.button, button { display: inline-flex; min-height: 50px; align-items: center; justify-content: center; padding: 0 22px; border: 1px solid var(--red); border-radius: var(--radius); background: var(--red); color: white; font-size: 15px; font-weight: 700; cursor: pointer; transition: transform 180ms ease, background-color 180ms ease, border-color 180ms ease, box-shadow 180ms ease; }
.button:hover, button:hover:not(:disabled) { transform: translateY(-2px); border-color: var(--red-dark); background: var(--red-dark); box-shadow: 0 12px 24px rgb(243 32 54 / .18); }
.button:focus-visible, button:focus-visible, summary:focus-visible, a:focus-visible { outline: 3px solid rgb(243 32 54 / .24); outline-offset: 3px; }
.button:active, button:active:not(:disabled) { transform: translateY(0); }
.button-small { min-height: 42px; padding-inline: 17px; font-size: 13px; }
.button-quiet, button.secondary { border-color: var(--stone-200); background: var(--paper); color: var(--ink); }
.button-quiet:hover, button.secondary:hover:not(:disabled) { border-color: #d6d0c6; background: var(--stone-50); box-shadow: none; }
button:disabled { cursor: not-allowed; opacity: .42; }

.hero { display: grid; grid-template-columns: minmax(0, .86fr) minmax(520px, 1.14fr); gap: 68px; align-items: center; min-height: 720px; padding-block: 92px 110px; }
.eyebrow { margin: 0 0 22px; color: var(--red); font-size: 12px; line-height: 1; font-weight: 800; letter-spacing: .14em; }
.hero h1 { margin: 0; font-size: clamp(56px, 6vw, 88px); line-height: .98; letter-spacing: -.065em; }
.hero-lead { max-width: 570px; margin: 32px 0 0; color: var(--muted); font-size: clamp(18px, 1.7vw, 22px); line-height: 1.75; }
.hero-actions { display: flex; gap: 12px; margin-top: 36px; }
.hero-note { margin: 20px 0 0; color: #78716c; font-size: 13px; }
.hero-product { position: relative; min-height: 510px; }
.product-shot { position: absolute; overflow: hidden; border: 1px solid var(--stone-200); border-radius: 18px; background: var(--paper); box-shadow: var(--shadow); }
.product-shot img { width: 100%; }
.sidepanel-shot img { aspect-ratio: 7 / 8; object-fit: cover; object-position: top; }
.product-shot-back { top: 58px; right: 0; width: 94%; transform: rotate(1.5deg); }
.product-shot-front { right: 8%; bottom: 12px; width: 78%; transform: rotate(-1deg); }
.browser-bar { display: flex; align-items: center; gap: 6px; height: 34px; padding: 0 12px; border-bottom: 1px solid var(--stone-200); background: var(--stone-50); }
.browser-bar i { width: 7px; height: 7px; border-radius: 50%; background: #d6d3d1; }
.browser-bar em { margin-left: 5px; color: #78716c; font-size: 10px; font-style: normal; }
.hero-mark { position: absolute; bottom: 4px; left: 0; width: 112px; border-radius: 26px; box-shadow: var(--shadow); transform: rotate(-8deg); }
.mobile-handoff { display: none; }
.promise-strip { display: flex; align-items: center; justify-content: center; gap: 34px; min-height: 88px; padding: 20px 24px; background: var(--ink); color: white; }
.promise-strip p { margin: 0; font-size: 18px; font-weight: 700; }
.promise-strip span { color: var(--red); font-size: 24px; }

.section-block { padding-block: 132px; }
.section-heading { max-width: 690px; }
.section-heading h2, .install-heading h2, .trust h2 { margin: 0; font-size: clamp(42px, 5vw, 66px); line-height: 1.08; letter-spacing: -.055em; }
.section-heading > p:last-child { margin: 28px 0 0; color: var(--muted); font-size: 18px; line-height: 1.75; }
.workflow-grid { display: grid; grid-template-columns: repeat(3, 1fr); margin: 76px 0 0; padding: 0; list-style: none; border-top: 1px solid var(--stone-200); }
.workflow-grid li { min-height: 270px; padding: 34px 36px 24px 0; border-right: 1px solid var(--stone-200); }
.workflow-grid li + li { padding-left: 36px; }
.workflow-grid li:last-child { border-right: 0; }
.step-index { display: block; margin-bottom: 58px; color: var(--red); font-size: 14px; font-weight: 800; }
.workflow-grid h3 { margin: 0 0 16px; font-size: 24px; letter-spacing: -.035em; }
.workflow-grid p { margin: 0; color: var(--muted); line-height: 1.75; }

.product-section { overflow: hidden; padding-block: 132px; background: var(--stone-50); }
.product-layout { display: grid; grid-template-columns: .7fr 1.3fr; gap: 72px; align-items: center; }
.product-copy h2 { font-size: clamp(40px, 4vw, 60px); }
.plain-list { display: grid; gap: 14px; margin: 34px 0 0; padding: 0; list-style: none; font-size: 15px; font-weight: 700; }
.plain-list li { padding-bottom: 14px; border-bottom: 1px solid var(--stone-200); }
.workspace-frame { overflow: hidden; border: 1px solid var(--stone-200); border-radius: var(--radius-lg); background: var(--paper); box-shadow: var(--shadow); transform: rotate(.8deg); }
.sidepanel-frame { width: min(100%, 520px); justify-self: center; }
.sidepanel-frame > img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; object-position: top; }
.workspace-tabs { display: flex; gap: 10px; padding: 16px 18px; border-bottom: 1px solid var(--stone-200); }
.workspace-tabs span { padding: 7px 10px; color: #78716c; font-size: 11px; }
.workspace-tabs .active { border-radius: 8px; background: var(--ink); color: white; }

.trust { display: grid; grid-template-columns: .9fr 1.1fr; gap: 100px; align-items: end; }
.trust h2 { font-size: clamp(40px, 4.2vw, 60px); }
.trust-copy > p { margin: 0; color: var(--muted); font-size: 18px; line-height: 1.75; }
.trust-points { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }
.trust-points span { padding: 10px 14px; border: 1px solid var(--stone-200); border-radius: 10px; font-size: 13px; font-weight: 700; }

.install-section { padding-block: 112px; background: var(--ink); color: white; }
.eyebrow-light { color: #ff6877; }
.install-heading { display: grid; grid-template-columns: 1fr .8fr; gap: 80px; align-items: end; margin-bottom: 54px; }
.install-heading h2 { font-size: clamp(42px, 4.5vw, 64px); }
.install-heading > p { margin: 0; color: #c7c2bc; font-size: 17px; line-height: 1.75; }
.installer-grid { display: grid; grid-template-columns: .78fr 1.22fr; gap: 24px; }
.installer-card, .install-steps { border: 1px solid #393633; border-radius: 18px; background: #211f1d; }
.installer-card { padding: 30px; }
.installer-brand { display: flex; gap: 14px; align-items: center; }
.installer-brand img { border-radius: 15px; }
.installer-brand div { display: grid; gap: 4px; }
.installer-brand span { color: #aaa49e; font-size: 12px; }
.versions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin: 28px 0 20px; }
.version-card { padding: 15px; border: 1px solid #3c3936; border-radius: 10px; background: #292725; }
.version-label { display: block; margin-bottom: 7px; color: #aaa49e; font-size: 11px; }
.version-value { font-size: 17px; }
.actions { display: grid; gap: 10px; }
.actions button { width: 100%; }
.actions button.secondary { border-color: #494642; background: transparent; color: white; }
.actions button.secondary:hover:not(:disabled) { border-color: #5a5651; background: #2d2b28; }
.progress { margin-top: 18px; padding: 15px; border: 1px solid #3c3936; border-radius: 10px; background: #292725; }
.progress-head { display: flex; justify-content: space-between; gap: 12px; font-size: 12px; }
.progress-track { height: 6px; overflow: hidden; margin-top: 11px; border-radius: 999px; background: #44413e; }
.progress-track span { display: block; width: 0; height: 100%; border-radius: inherit; background: var(--red); transition: width 150ms ease; }
.progress > p { overflow: hidden; margin: 9px 0 0; color: #aaa49e; font-size: 11px; text-overflow: ellipsis; white-space: nowrap; }
.installer-log { margin-top: 18px; color: #c7c2bc; font-size: 12px; }
.installer-log summary { cursor: pointer; }
.installer-log pre { max-height: 190px; overflow: auto; margin: 12px 0 0; padding: 12px; border-radius: 8px; background: #171615; color: #d6d3d1; white-space: pre-wrap; font: 11px/1.6 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; }
.install-steps { padding: 34px 38px; }
.install-label { margin: 0 0 24px; color: #aaa49e; font-size: 12px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.install-steps ol { display: grid; margin: 0; padding: 0; list-style: none; }
.install-steps li { display: grid; grid-template-columns: 34px 1fr; gap: 16px; padding: 18px 0; border-top: 1px solid #393633; }
.install-steps li > span { display: grid; width: 30px; height: 30px; place-items: center; border-radius: 50%; background: var(--red); font-size: 12px; font-weight: 800; }
.install-steps strong { font-size: 15px; }
.install-steps li p { margin: 6px 0 0; color: #aaa49e; font-size: 13px; line-height: 1.55; }
code { padding: 3px 6px; border-radius: 5px; background: #302e2b; color: #eeeae6; font-size: .88em; }
.update-note { margin: 22px 0 0; padding: 16px; border-radius: 10px; background: #292725; color: #aaa49e; font-size: 13px; line-height: 1.6; }
.update-note strong { color: white; }
.mobile-install-guide { display: none; }

.compact h2 { font-size: 48px; }
.faq { display: grid; grid-template-columns: .4fr 1fr; gap: 100px; }
.faq-list { border-top: 1px solid var(--stone-200); }
.faq-list details { border-bottom: 1px solid var(--stone-200); }
.faq-list summary { padding: 24px 4px; cursor: pointer; font-weight: 700; }
.faq-list details p { margin: -6px 4px 24px; color: var(--muted); line-height: 1.7; }
.site-footer { display: flex; align-items: center; justify-content: space-between; min-height: 120px; border-top: 1px solid var(--stone-200); }
.site-footer > p { color: #78716c; font-size: 12px; }

@media (max-width: 960px) {
  .site-header { grid-template-columns: 1fr auto; } .site-header nav { display: none; }
  .hero { grid-template-columns: 1fr; gap: 56px; padding-block: 76px; } .hero-copy { max-width: 720px; } .hero-product { min-height: 580px; }
  .product-shot-back { width: 88%; } .product-shot-front { width: 72%; }
  .product-layout, .trust, .install-heading { grid-template-columns: 1fr; gap: 44px; }
  .installer-grid { grid-template-columns: 1fr; } .product-copy { max-width: 720px; }
  .faq { grid-template-columns: 1fr; gap: 44px; }
}
@media (max-width: 680px) {
  .section-shell { width: min(100% - 48px, 420px); } .site-header { min-height: 76px; padding: 14px 24px; } .site-header > .button { display: none; }
  .brand { gap: 9px; } .brand img { width: 36px; height: 36px; } .brand strong { font-size: 15px; } .brand small { display: none; }
  .eyebrow { display: none; }
  .hero { display: block; min-height: auto; padding-block: 64px 56px; } .hero h1 { font-size: 42px; line-height: 1.06; letter-spacing: -.055em; }
  .hero-lead { margin-top: 26px; font-size: 15px; line-height: 1.75; } .hero-actions, .hero-note { display: none; } .hero-product { min-height: 292px; margin-top: 44px; }
  .product-shot-back { top: 18px; right: 4px; width: calc(100% - 8px); } .product-shot-front { right: 0; width: 88%; } .hero-mark { bottom: 10px; left: -4px; width: 66px; border-radius: 17px; }
  .mobile-handoff { display: block; margin-top: 48px; padding: 32px 26px 28px; border-radius: 20px; background: var(--ink); color: white; }
  .mobile-handoff-label { margin: 0 0 16px; color: #ff6877; font-size: 11px; font-weight: 800; letter-spacing: .08em; }
  .mobile-handoff h2 { margin: 0; font-size: 25px; line-height: 1.24; letter-spacing: -.035em; }
  .mobile-handoff > p:not(.mobile-handoff-label) { margin: 18px 0 24px; color: #c7c2bc; font-size: 14px; line-height: 1.7; }
  .mobile-handoff button { width: 100%; }
  #copy-feedback { display: block; min-height: 18px; margin-top: 14px; color: #c7c2bc; font-size: 12px; line-height: 1.5; text-align: center; }
  .promise-strip, .workflow, .product-section, .trust, .install-section, .faq, .site-footer { display: none; }
  .section-block, .product-section { padding-block: 68px; } .section-heading h2, .install-heading h2, .trust h2 { font-size: 32px; line-height: 1.12; }
  .section-heading > p:last-child { display: none; }
  .workflow-grid { grid-template-columns: 1fr; margin-top: 34px; } .workflow-grid li, .workflow-grid li + li { min-height: auto; padding: 22px 0; border-right: 0; border-bottom: 1px solid var(--stone-200); }
  .step-index { margin-bottom: 8px; font-size: 11px; } .workflow-grid h3 { margin: 0; font-size: 20px; } .workflow-grid p { display: none; }
  .product-section { display: none; }
  .trust { display: none; }
  .install-section { padding-block: 68px; } .install-heading { gap: 0; margin-bottom: 28px; } .install-heading > p { display: none; } .installer-card { padding: 22px 18px; }
  .install-steps { display: none; } .mobile-install-guide { display: block; padding: 20px; border: 1px solid #393633; border-radius: 14px; background: #211f1d; color: #c7c2bc; font-size: 14px; }
  .mobile-install-guide summary { color: white; font-weight: 700; cursor: pointer; } .mobile-install-guide ol { margin: 18px 0; padding-left: 22px; } .mobile-install-guide li { margin: 10px 0; line-height: 1.55; } .mobile-install-guide p { margin: 0; color: #aaa49e; line-height: 1.6; }
  .versions { grid-template-columns: 1fr 1fr; } .faq { gap: 26px; } .faq-list summary { padding-block: 20px; font-size: 14px; } .faq-list details p { font-size: 14px; }
  .site-footer { min-height: 96px; align-items: flex-start; flex-direction: column; justify-content: center; gap: 12px; } .site-footer > p { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; } *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}