:root {
  --navy-950: #07162f;
  --navy-900: #0b1f4b;
  --navy-800: #122c5c;
  --navy-700: #1d4178;
  --blue-600: #2563b8;
  --blue-100: #dcecff;
  --blue-50: #f1f7ff;
  --green-500: #9ed657;
  --green-600: #7db93b;
  --ink: #15243a;
  --muted: #5b6b7f;
  --line: #dbe5f0;
  --surface: #ffffff;
  --surface-alt: #f6f9fc;
  --success: #2a7c47;
  --shadow-sm: 0 10px 30px rgba(15, 39, 73, .08);
  --shadow-lg: 0 24px 70px rgba(8, 28, 59, .16);
  --radius-sm: 10px;
  --radius: 18px;
  --radius-lg: 28px;
  --container: 1180px;
  --header-height: 78px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--surface);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
body.modal-open { overflow: hidden; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
button, input { font: inherit; }
h1, h2, h3, h4, p { margin-top: 0; }
h1, h2, h3, h4 { color: var(--navy-950); line-height: 1.25; letter-spacing: -.02em; }
h1 { font-size: clamp(2.6rem, 5.4vw, 5.2rem); }
h2 { font-size: clamp(2rem, 3.6vw, 3.35rem); }
h3 { font-size: 1.35rem; }
p { color: var(--muted); }
.container { width: min(calc(100% - 40px), var(--container)); margin-inline: auto; }
.section { padding: 104px 0; }
.section-sm { padding: 72px 0; }
.section-alt { background: var(--surface-alt); }
.section-dark { background: var(--navy-950); color: #fff; }
.section-dark h2, .section-dark h3, .section-dark p { color: #fff; }
.section-head { max-width: 760px; margin-bottom: 52px; }
.section-head.center { text-align: center; margin-inline: auto; }
.section-head p { font-size: 1.08rem; margin-bottom: 0; }
.section-label { display: block; margin-bottom: 14px; color: var(--blue-600); font-weight: 800; letter-spacing: .12em; font-size: .78rem; }
.section-dark .section-label { color: var(--green-500); }
.skip-link { position: fixed; top: 8px; left: 8px; transform: translateY(-140%); background: #fff; color: var(--navy-950); padding: 10px 16px; z-index: 999; border-radius: 8px; }
.skip-link:focus { transform: none; }
:focus-visible { outline: 3px solid var(--green-500); outline-offset: 3px; }

.site-header { position: sticky; top: 0; z-index: 100; height: var(--header-height); background: rgba(255,255,255,.96); border-bottom: 1px solid rgba(219,229,240,.8); backdrop-filter: blur(14px); }
.header-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 12px; min-width: 225px; }
.brand img { width: 48px; height: 48px; object-fit: contain; border-radius: 9px; }
.brand-text { display: grid; line-height: 1.15; font-weight: 900; color: var(--navy-950); letter-spacing: -.02em; }
.brand-text small { margin-top: 4px; font-size: .68rem; font-weight: 700; color: var(--muted); letter-spacing: .07em; }
.site-nav { display: flex; align-items: center; gap: 4px; }
.site-nav a { padding: 10px 14px; color: #42526a; font-weight: 700; font-size: .92rem; border-radius: 9px; transition: .2s ease; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--navy-900); background: var(--blue-50); }
.site-nav .nav-download { margin-left: 12px; padding-inline: 20px; color: var(--navy-950); background: var(--green-500); }
.site-nav .nav-download:hover { background: #ade467; }
.menu-toggle { display: none; width: 46px; height: 46px; padding: 0; border: 1px solid var(--line); border-radius: 10px; background: #fff; color: var(--navy-900); place-items: center; cursor: pointer; }
.menu-toggle svg { width: 24px; height: 24px; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 52px; padding: 0 24px; border: 1px solid transparent; border-radius: 11px; font-weight: 900; cursor: pointer; transition: transform .2s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease; }
.btn:hover { transform: translateY(-2px); }
.btn-primary { color: var(--navy-950); background: var(--green-500); box-shadow: 0 12px 28px rgba(126, 185, 59, .2); }
.btn-primary:hover { background: #aae263; box-shadow: 0 15px 30px rgba(126, 185, 59, .28); }
.btn-secondary { color: var(--navy-900); background: #fff; border-color: var(--line); }
.btn-secondary:hover { border-color: #aabed5; }
.btn svg { width: 18px; height: 18px; }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; }

.hero { overflow: hidden; position: relative; background: linear-gradient(135deg, #fff 0%, #f2f7ff 58%, #e4f1ff 100%); }
.hero::after { content: ""; position: absolute; inset: auto -100px -180px auto; width: 460px; height: 460px; border: 80px solid rgba(158,214,87,.13); border-radius: 50%; pointer-events: none; }
.hero-grid { min-height: calc(100vh - var(--header-height)); padding: 76px 0 72px; display: grid; grid-template-columns: .92fr 1.08fr; gap: 72px; align-items: center; }
.hero-copy { position: relative; z-index: 1; }
.hero h1 { max-width: 720px; margin-bottom: 26px; font-size: clamp(2.6rem, 4.5vw, 4rem); letter-spacing: -.04em; }
.hero h1 strong { display: block; color: var(--blue-600); }
.hero-lead { max-width: 640px; margin-bottom: 34px; font-size: 1.15rem; color: #52667e; }
.hero-note { display: flex; align-items: center; gap: 9px; margin-top: 20px; font-size: .84rem; color: #64778e; }
.hero-note svg { width: 18px; color: var(--success); flex: 0 0 auto; }
.rename-console { position: relative; z-index: 1; border: 1px solid #c9d9eb; border-radius: 20px; background: #fff; box-shadow: var(--shadow-lg); overflow: hidden; transform: rotate(.4deg); }
.console-bar { height: 48px; display: flex; align-items: center; justify-content: space-between; padding: 0 18px; color: #708096; background: #f6f8fb; border-bottom: 1px solid var(--line); font-size: .76rem; font-weight: 800; }
.console-dots { display: flex; gap: 6px; }
.console-dots i { width: 8px; height: 8px; border-radius: 50%; background: #b8c5d3; }
.console-dots i:first-child { background: var(--green-500); }
.console-body { padding: 18px; }
.rule-strip { display: grid; grid-template-columns: 1.1fr .8fr .65fr; gap: 9px; margin-bottom: 16px; }
.rule-box { min-height: 70px; padding: 12px; border: 1px solid var(--line); border-radius: 9px; background: #fbfdff; }
.rule-box span { display: block; margin-bottom: 8px; color: #75859a; font-size: .65rem; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; }
.rule-box strong { color: var(--navy-900); font-size: .81rem; }
.file-table { border: 1px solid var(--line); border-radius: 11px; overflow: hidden; }
.file-head, .file-row { display: grid; grid-template-columns: 34px 1fr 34px 1fr; align-items: center; gap: 8px; padding: 10px 12px; }
.file-head { background: var(--navy-900); color: #fff; font-size: .67rem; font-weight: 800; }
.file-row { min-height: 48px; color: #64748b; border-bottom: 1px solid #e8eef5; font-size: .72rem; }
.file-row:last-child { border: 0; }
.file-row .new-name { color: var(--success); font-weight: 800; }
.file-row .arrow { color: var(--green-600); font-weight: 900; text-align: center; }
.file-row .file-icon { width: 22px; height: 25px; border: 1px solid #9bb9db; border-radius: 3px; background: var(--blue-50); }
.console-status { display: flex; align-items: center; justify-content: space-between; margin-top: 13px; font-size: .7rem; color: #73849a; }
.console-status strong { color: var(--success); }

.trust-rail { border-block: 1px solid var(--line); background: #fff; }
.trust-grid { min-height: 112px; display: grid; grid-template-columns: repeat(4, 1fr); align-items: center; }
.trust-item { padding: 12px 26px; border-right: 1px solid var(--line); }
.trust-item:first-child { padding-left: 0; }
.trust-item:last-child { border: 0; }
.trust-item strong { display: block; margin-bottom: 3px; color: var(--navy-900); font-size: 1.02rem; }
.trust-item span { color: var(--muted); font-size: .82rem; }

.feature-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 1px solid var(--line); }
.feature-item { position: relative; min-height: 250px; padding: 38px 34px 34px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.feature-item:nth-child(3n) { border-right: 0; }
.feature-no { display: inline-grid; place-items: center; width: 38px; height: 38px; margin-bottom: 30px; color: var(--navy-900); background: var(--blue-100); border-radius: 9px; font-size: .78rem; font-weight: 900; }
.feature-item p { margin-bottom: 0; font-size: .92rem; }

.scenario-grid { display: grid; grid-template-columns: 1.15fr .85fr .85fr; grid-template-rows: 1fr 1fr; gap: 16px; }
.scenario-card { min-height: 250px; padding: 32px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; overflow: hidden; }
.scenario-card:first-child { grid-row: 1 / 3; background: var(--navy-900); }
.scenario-card:first-child h3, .scenario-card:first-child p { color: #fff; }
.scenario-card h3 { margin: 18px 0 12px; }
.scenario-icon { width: 48px; height: 48px; display: grid; place-items: center; color: var(--navy-900); background: var(--blue-100); border-radius: 12px; }
.scenario-card:first-child .scenario-icon { color: var(--navy-950); background: var(--green-500); }
.scenario-icon svg { width: 24px; height: 24px; }
.scenario-example { margin-top: 36px; padding-top: 25px; border-top: 1px solid rgba(255,255,255,.18); }
.scenario-example code { display: block; padding: 9px 12px; color: #dfeaff; background: rgba(255,255,255,.08); border-radius: 7px; font-family: Consolas, monospace; font-size: .76rem; }
.scenario-example .to { margin: 8px 0; color: var(--green-500); font-weight: 900; text-align: center; }

.steps { counter-reset: step; display: grid; grid-template-columns: repeat(4, 1fr); gap: 36px; }
.step { position: relative; padding-top: 70px; }
.step::before { counter-increment: step; content: "0" counter(step); position: absolute; top: 0; left: 0; color: var(--green-500); font-size: 2.6rem; font-weight: 900; line-height: 1; }
.step:not(:last-child)::after { content: ""; position: absolute; top: 20px; left: 70px; right: -10px; height: 1px; background: rgba(255,255,255,.2); }
.step p { color: #c9d5e6; font-size: .9rem; }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.screen-frame { padding: 14px; border: 1px solid var(--line); border-radius: 20px; background: #fff; box-shadow: var(--shadow-sm); }
.screen-frame img { width: 100%; border-radius: 11px; }
.check-list { display: grid; gap: 16px; margin: 28px 0 0; padding: 0; list-style: none; }
.check-list li { display: grid; grid-template-columns: 26px 1fr; gap: 12px; color: #4c6077; }
.check-list svg { width: 22px; color: var(--green-600); }

.quote-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.quote { display: flex; flex-direction: column; min-height: 280px; padding: 32px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
.quote-mark { color: var(--green-600); font-size: 3.5rem; font-family: Georgia, serif; line-height: .8; }
.quote blockquote { margin: 22px 0 28px; color: #334a64; font-size: 1rem; flex: 1; }
.quote footer { padding-top: 18px; border-top: 1px solid var(--line); color: var(--muted); font-size: .82rem; }

.cta-panel { display: flex; align-items: center; justify-content: space-between; gap: 48px; padding: 52px 58px; color: #fff; background: var(--navy-900); border-radius: var(--radius-lg); }
.cta-panel h2 { max-width: 720px; margin-bottom: 10px; color: #fff; }
.cta-panel p { margin-bottom: 0; color: #c7d5e8; }
.cta-panel .btn { flex: 0 0 auto; }

.page-hero { position: relative; overflow: hidden; padding: 92px 0 80px; background: var(--blue-50); border-bottom: 1px solid var(--line); }
.page-hero::after { content: ""; position: absolute; width: 340px; height: 340px; right: -110px; bottom: -220px; border: 64px solid rgba(158,214,87,.18); border-radius: 50%; }
.breadcrumbs { display: flex; gap: 9px; margin-bottom: 28px; color: #66788f; font-size: .84rem; }
.breadcrumbs a:hover { color: var(--blue-600); }
.page-hero h1 { max-width: 900px; margin-bottom: 22px; font-size: clamp(2.5rem, 4.7vw, 4.5rem); }
.page-hero p { max-width: 760px; margin-bottom: 0; font-size: 1.1rem; }

.capability-group { display: grid; grid-template-columns: 280px 1fr; gap: 72px; padding: 52px 0; border-top: 1px solid var(--line); }
.capability-group:last-child { border-bottom: 1px solid var(--line); }
.capability-title p { font-size: .9rem; }
.capability-items { display: grid; grid-template-columns: repeat(2, 1fr); column-gap: 50px; row-gap: 28px; }
.capability-item { padding-left: 20px; border-left: 3px solid var(--blue-100); }
.capability-item h3 { margin-bottom: 7px; font-size: 1.05rem; }
.capability-item p { margin-bottom: 0; font-size: .88rem; }

.version-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.version-card { min-height: 230px; padding: 34px; border: 1px solid rgba(255,255,255,.16); border-radius: var(--radius); background: rgba(255,255,255,.05); }
.version-card span { display: inline-block; margin-bottom: 32px; color: var(--green-500); font-weight: 900; font-size: .8rem; }
.version-card p { color: #c7d5e8; }

.guide-layout { display: grid; grid-template-columns: 260px 1fr; gap: 70px; align-items: start; }
.guide-nav { position: sticky; top: 110px; padding: 24px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
.guide-nav strong { display: block; margin-bottom: 14px; color: var(--navy-900); }
.guide-nav a { display: block; padding: 9px 0; color: var(--muted); font-size: .88rem; border-bottom: 1px solid #edf1f5; }
.guide-nav a:last-child { border: 0; }
.guide-nav a:hover { color: var(--blue-600); }
.guide-step { padding: 0 0 64px; margin-bottom: 64px; border-bottom: 1px solid var(--line); }
.guide-step:last-child { margin-bottom: 0; }
.guide-step-no { display: inline-flex; align-items: center; gap: 10px; margin-bottom: 20px; color: var(--blue-600); font-weight: 900; font-size: .84rem; }
.guide-step h2 { font-size: clamp(1.8rem, 3vw, 2.7rem); }
.tip-box { margin-top: 26px; padding: 22px 24px; border-left: 4px solid var(--green-500); background: var(--blue-50); }
.tip-box strong { color: var(--navy-900); }
.recipe-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-top: 34px; }
.recipe { padding: 26px; border: 1px solid var(--line); border-radius: var(--radius-sm); }
.recipe code { display: block; margin-top: 12px; color: var(--success); font-family: Consolas, monospace; font-size: .78rem; }

.download-layout { display: grid; grid-template-columns: 1.15fr .85fr; gap: 28px; align-items: start; }
.release-card { padding: 48px; color: #fff; background: var(--navy-900); border-radius: var(--radius-lg); }
.release-card h2, .release-card h3, .release-card p { color: #fff; }
.version-number { display: flex; flex-wrap: wrap; align-items: baseline; gap: 14px; margin: 18px 0 18px; }
.version-number strong { font-size: clamp(3rem, 6vw, 5.5rem); line-height: 1; letter-spacing: -.06em; }
.version-number span { color: var(--green-500); font-weight: 900; }
.release-meta { display: flex; flex-wrap: wrap; gap: 12px 28px; margin: 28px 0 34px; padding-block: 22px; border-block: 1px solid rgba(255,255,255,.18); color: #d3deec; font-size: .88rem; }
.release-card .btn { width: 100%; }
.info-stack { display: grid; gap: 16px; }
.info-card { padding: 30px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
.info-card h3 { margin-bottom: 10px; }
.info-card p:last-child { margin-bottom: 0; }
.edition-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.edition { padding: 34px; border: 1px solid var(--line); border-radius: var(--radius); }
.edition .tag { display: inline-block; margin-bottom: 22px; padding: 4px 9px; border-radius: 6px; color: var(--navy-900); background: var(--blue-100); font-weight: 900; font-size: .72rem; }
.spec-table { width: 100%; border-collapse: collapse; margin-top: 28px; }
.spec-table th, .spec-table td { padding: 16px 18px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
.spec-table th { width: 180px; color: var(--navy-900); background: var(--blue-50); }
.license-note { display: grid; grid-template-columns: 56px 1fr; gap: 20px; margin-top: 24px; padding: 28px; border: 1px solid #cfe1bb; border-radius: var(--radius); background: #f5faee; }
.license-note svg { width: 44px; color: var(--success); }

.faq-list { max-width: 900px; margin: 0 auto; border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-question { width: 100%; display: flex; justify-content: space-between; align-items: center; gap: 20px; padding: 25px 0; color: var(--navy-950); background: transparent; border: 0; text-align: left; font-weight: 900; cursor: pointer; }
.faq-question svg { width: 22px; flex: 0 0 auto; transition: transform .2s ease; }
.faq-question[aria-expanded="true"] svg { transform: rotate(45deg); }
.faq-answer { padding: 0 48px 26px 0; }
.faq-answer p { margin-bottom: 0; }

.site-footer { padding: 64px 0 26px; color: #c5d1df; background: var(--navy-950); }
.footer-grid { display: grid; grid-template-columns: 1.4fr repeat(2, .7fr); gap: 60px; padding-bottom: 48px; }
.footer-brand { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; color: #fff; font-weight: 900; }
.footer-brand img { width: 44px; height: 44px; border-radius: 8px; }
.footer-intro { max-width: 420px; color: #9fb0c5; font-size: .86rem; }
.footer-col h3 { color: #fff; font-size: .95rem; }
.footer-col a { display: block; padding: 5px 0; color: #aebed1; font-size: .85rem; }
.footer-col a:hover { color: var(--green-500); }
.footer-bottom { display: flex; justify-content: space-between; gap: 30px; padding-top: 26px; border-top: 1px solid rgba(255,255,255,.12); color: #8296ad; font-size: .76rem; }
.back-to-top { position: fixed; right: 22px; bottom: 22px; width: 44px; height: 44px; display: grid; place-items: center; color: #fff; background: var(--navy-900); border: 0; border-radius: 10px; box-shadow: var(--shadow-sm); cursor: pointer; opacity: 0; visibility: hidden; transform: translateY(10px); transition: .2s ease; z-index: 50; }
.back-to-top.is-visible { opacity: 1; visibility: visible; transform: none; }
.back-to-top svg { width: 20px; }

.modal { position: fixed; inset: 0; display: grid; place-items: center; padding: 20px; z-index: 500; }
.modal[hidden] { display: none; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(3,13,31,.72); backdrop-filter: blur(5px); }
.modal-dialog { position: relative; width: min(760px, 100%); max-height: calc(100vh - 40px); overflow: auto; padding: 42px; border-radius: var(--radius-lg); background: #fff; box-shadow: var(--shadow-lg); }
.modal-close { position: absolute; top: 18px; right: 18px; width: 42px; height: 42px; display: grid; place-items: center; color: var(--navy-900); background: var(--blue-50); border: 0; border-radius: 10px; cursor: pointer; }
.modal-close svg { width: 21px; }
.modal-head { max-width: 560px; margin-bottom: 28px; }
.modal-head h2 { margin-bottom: 8px; font-size: 2rem; }
.modal-head p { margin-bottom: 0; }
.download-channels { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.download-channel { padding: 26px; border: 1px solid var(--line); border-radius: var(--radius); text-align: center; transition: .2s ease; }
.download-channel:hover { border-color: #afc8e3; transform: translateY(-2px); }
.qr-image { width: 190px; height: 190px; margin: 0 auto 18px; padding: 7px; border: 1px solid var(--line); border-radius: 10px; object-fit: contain; }
.download-channel strong { display: block; color: var(--navy-900); }
.download-channel span { color: var(--muted); font-size: .8rem; }
.modal-footnote { margin: 22px 0 0; color: #74859a; font-size: .78rem; text-align: center; }

.reveal { opacity: 0; transform: translateY(18px); transition: opacity .55s ease, transform .55s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

@media (max-width: 1024px) {
  .site-nav { position: fixed; inset: var(--header-height) 16px auto; display: none; padding: 14px; background: #fff; border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow-lg); }
  .site-nav.is-open { display: grid; }
  .site-nav a { padding: 13px 14px; }
  .site-nav .nav-download { margin: 8px 0 0; }
  .menu-toggle { display: grid; }
  .hero-grid { grid-template-columns: 1fr; gap: 46px; min-height: auto; }
  .hero-copy { max-width: 760px; }
  .rename-console { max-width: 760px; }
  .feature-list { grid-template-columns: repeat(2, 1fr); }
  .feature-item:nth-child(3n) { border-right: 1px solid var(--line); }
  .feature-item:nth-child(2n) { border-right: 0; }
  .scenario-grid { grid-template-columns: repeat(2, 1fr); }
  .scenario-card:first-child { grid-column: 1 / 3; grid-row: auto; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .step:nth-child(2)::after { display: none; }
  .split { gap: 42px; }
  .quote-grid { grid-template-columns: 1fr; }
  .quote { min-height: auto; }
  .footer-grid { grid-template-columns: 1.2fr repeat(3, .6fr); gap: 30px; }
}

@media (max-width: 760px) {
  :root { --header-height: 68px; }
  .container { width: min(calc(100% - 28px), var(--container)); }
  .section { padding: 76px 0; }
  .section-sm { padding: 56px 0; }
  .brand { min-width: 0; }
  .brand img { width: 42px; height: 42px; }
  .brand-text { font-size: .9rem; }
  .brand-text small { display: none; }
  .hero-grid { padding: 56px 0 62px; }
  .hero h1 { font-size: clamp(2.4rem, 11vw, 3rem); }
  .hero-lead { font-size: 1.02rem; }
  .btn-row .btn { width: 100%; }
  .rule-strip { grid-template-columns: 1fr; }
  .rule-box:nth-child(n+2) { display: none; }
  .file-head, .file-row { grid-template-columns: 24px 1fr 20px 1fr; padding-inline: 8px; gap: 5px; }
  .file-row { font-size: .57rem; }
  .console-body { padding: 11px; }
  .trust-grid { grid-template-columns: repeat(2, 1fr); padding: 10px 0; }
  .trust-item { padding: 16px; border-bottom: 1px solid var(--line); }
  .trust-item:nth-child(2) { border-right: 0; }
  .trust-item:nth-child(n+3) { border-bottom: 0; }
  .feature-list { grid-template-columns: 1fr; }
  .feature-item, .feature-item:nth-child(3n) { border-right: 0; min-height: auto; padding: 30px 10px; }
  .feature-no { margin-bottom: 18px; }
  .scenario-grid { grid-template-columns: 1fr; }
  .scenario-card:first-child { grid-column: auto; }
  .scenario-card { min-height: auto; padding: 26px; }
  .steps { grid-template-columns: 1fr; gap: 10px; }
  .step { padding-left: 68px; padding-top: 0; min-height: 120px; }
  .step::before { left: 0; }
  .step:not(:last-child)::after { top: 50px; left: 27px; bottom: 10px; right: auto; width: 1px; height: auto; }
  .split, .download-layout { grid-template-columns: 1fr; gap: 36px; }
  .cta-panel { display: grid; padding: 34px 26px; }
  .cta-panel .btn { width: 100%; }
  .page-hero { padding: 65px 0 58px; }
  .page-hero h1 { font-size: 2.6rem; }
  .capability-group { grid-template-columns: 1fr; gap: 20px; padding: 38px 0; }
  .capability-items, .version-grid, .recipe-grid, .edition-grid { grid-template-columns: 1fr; }
  .guide-layout { grid-template-columns: 1fr; }
  .guide-nav { position: static; }
  .guide-step { padding-bottom: 45px; margin-bottom: 45px; }
  .release-card { padding: 30px 24px; }
  .spec-table th, .spec-table td { display: block; width: 100%; }
  .spec-table td { padding-top: 10px; }
  .faq-answer { padding-right: 0; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-about { grid-column: 1 / 3; }
  .footer-bottom { display: grid; }
  .modal-dialog { padding: 34px 20px 24px; }
  .download-channels { grid-template-columns: 1fr; }
  .qr-image { width: 160px; height: 160px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}