:root {
    --blue: #2878ff;
    --blue-dark: #165de0;
    --blue-soft: #edf5ff;
    --ink: #18243a;
    --muted: #6f7d94;
    --line: #e7edf5;
    --surface: #ffffff;
    --canvas: #f7f9fc;
    --shadow: 0 14px 40px rgba(32, 73, 123, .08);
    --radius: 14px;
    --shell: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--surface); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif; line-height: 1.7; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button { color: inherit; }
img, video { max-width: 100%; height: auto; }
svg { display: block; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; clip: rect(0, 0, 0, 0); overflow: hidden; white-space: nowrap; border: 0; }

.site-header { position: sticky; top: 0; z-index: 1000; height: 68px; background: rgba(255,255,255,.96); border-bottom: 1px solid rgba(225,232,242,.9); backdrop-filter: blur(14px); }
.header-inner { width: min(var(--shell), calc(100% - 40px)); height: 100%; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; }
.site-brand { display: flex; align-items: center; min-width: 0; font-weight: 700; letter-spacing: -.01em; }
.brand-mark { width: 34px; color: var(--blue); margin-right: 10px; flex: 0 0 auto; }
.brand-mark svg { width: 34px; height: 34px; }
.brand-name { font-size: 17px; color: #14284a; }
.brand-divider { width: 1px; height: 17px; background: #d9e1ed; margin: 0 12px; }
.brand-subtitle { font-size: 15px; color: #6d7a8e; font-weight: 500; }
.header-menu { height: 100%; display: flex; align-items: center; gap: 35px; }
.header-menu > a { position: relative; height: 100%; display: inline-flex; align-items: center; color: #556277; font-size: 15px; transition: color .2s ease; }
.header-menu > a:hover, .header-menu > a.active { color: var(--blue); }
.header-menu > a.active::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 3px; border-radius: 3px 3px 0 0; background: var(--blue); }
.header-search { width: 212px; height: 38px; display: flex; align-items: center; border: 1px solid #dce4ef; background: #f8fafc; border-radius: 20px; overflow: hidden; transition: .2s ease; }
.header-search:focus-within { width: 244px; border-color: var(--blue); background: #fff; box-shadow: 0 0 0 3px rgba(40,120,255,.08); }
.header-search input { width: 100%; min-width: 0; height: 100%; padding: 0 4px 0 16px; border: 0; outline: 0; background: transparent; color: var(--ink); font-size: 14px; }
.header-search button { width: 40px; height: 100%; padding: 0; display: grid; place-items: center; border: 0; background: transparent; cursor: pointer; color: #8490a3; }
.header-search svg { width: 18px; fill: none; stroke: currentColor; stroke-width: 1.9; stroke-linecap: round; }
.header-menu-button { display: none; width: 40px; height: 40px; padding: 9px; border: 0; background: transparent; cursor: pointer; }
.header-menu-button span { display: block; height: 2px; margin: 5px 0; border-radius: 2px; background: #23324a; transition: transform .2s ease, opacity .2s ease; }
.mobile-backdrop { position: fixed; inset: 68px 0 0; z-index: 850; visibility: hidden; opacity: 0; background: rgba(13,27,50,.38); transition: .2s ease; }

.home-shell { width: min(var(--shell), calc(100% - 40px)); margin: 0 auto; }
.help-hero { position: relative; min-height: 430px; padding: 86px 0 78px; overflow: hidden; background: linear-gradient(180deg, #eef6ff 0%, #f7fbff 70%, #fff 100%); }
.help-hero::before { content: ""; position: absolute; inset: 0; background-image: radial-gradient(rgba(69,135,244,.14) 1px, transparent 1px); background-size: 24px 24px; mask-image: linear-gradient(to bottom, #000, transparent 86%); }
.hero-orb { position: absolute; border-radius: 50%; filter: blur(2px); opacity: .7; }
.hero-orb-left { width: 320px; height: 320px; left: -140px; top: 50px; background: radial-gradient(circle, rgba(91,170,255,.22), rgba(91,170,255,0) 68%); }
.hero-orb-right { width: 410px; height: 410px; right: -160px; top: -90px; background: radial-gradient(circle, rgba(116,202,255,.24), rgba(116,202,255,0) 68%); }
.hero-content { position: relative; z-index: 1; text-align: center; }
.hero-eyebrow { margin: 0 0 8px; color: var(--blue); font-size: 12px; line-height: 1; font-weight: 700; letter-spacing: .18em; }
.hero-content h1 { margin: 0; font-size: clamp(32px, 4.2vw, 48px); line-height: 1.3; letter-spacing: -.04em; color: #152744; }
.hero-intro { margin: 12px 0 30px; color: #708097; font-size: 16px; }
.hero-search { width: min(680px, 100%); height: 64px; margin: 0 auto; padding: 7px 7px 7px 22px; display: flex; align-items: center; gap: 12px; background: #fff; border: 1px solid rgba(194,213,239,.7); border-radius: 12px; box-shadow: 0 16px 38px rgba(42,89,151,.12); transition: .2s ease; }
.hero-search:focus-within { border-color: rgba(40,120,255,.62); box-shadow: 0 18px 44px rgba(42,89,151,.16), 0 0 0 4px rgba(40,120,255,.08); }
.hero-search-icon { width: 23px; flex: 0 0 auto; fill: none; stroke: #8b98aa; stroke-width: 1.8; stroke-linecap: round; }
.hero-search input { min-width: 0; flex: 1; height: 100%; border: 0; outline: 0; background: transparent; font-size: 16px; color: var(--ink); }
.hero-search input::placeholder { color: #a2adbc; }
.hero-search button { width: 94px; height: 50px; border: 0; border-radius: 9px; color: #fff; background: linear-gradient(135deg, #3788ff, #216cf1); box-shadow: 0 8px 18px rgba(33,108,241,.22); cursor: pointer; font-weight: 600; transition: transform .2s ease, box-shadow .2s ease; }
.hero-search button:hover { transform: translateY(-1px); box-shadow: 0 10px 22px rgba(33,108,241,.3); }
.hot-searches { margin-top: 17px; display: flex; justify-content: center; flex-wrap: wrap; gap: 9px 18px; color: #8995a7; font-size: 13px; }
.hot-searches span { color: #6d7a8d; }
.hot-searches a { color: #65738a; transition: color .2s ease; }
.hot-searches a:hover { color: var(--blue); }

.home-section { padding: 78px 0; }
.scene-section { padding-top: 66px; }
.popular-section { background: var(--canvas); }
.section-heading { margin-bottom: 28px; display: flex; align-items: end; justify-content: space-between; }
.section-kicker { display: block; margin-bottom: 5px; color: var(--blue); font-size: 12px; line-height: 1.2; letter-spacing: .1em; font-weight: 700; }
.section-heading h2 { margin: 0; color: #172743; font-size: 28px; line-height: 1.35; letter-spacing: -.02em; }
.section-more { margin-bottom: 3px; color: #7a879a; font-size: 14px; transition: color .2s ease; }
.section-more span { display: inline-block; margin-left: 4px; transition: transform .2s ease; }
.section-more:hover { color: var(--blue); }
.section-more:hover span { transform: translateX(4px); }
.scene-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.scene-card { position: relative; min-height: 142px; padding: 26px 24px; display: flex; align-items: center; gap: 18px; overflow: hidden; border: 1px solid #e8eef6; border-radius: var(--radius); background: #fff; transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease; }
.scene-card::after { content: ""; position: absolute; width: 90px; height: 90px; right: -42px; bottom: -46px; border-radius: 50%; background: rgba(68,132,255,.05); transition: transform .25s ease; }
.scene-card:hover { transform: translateY(-4px); border-color: rgba(40,120,255,.28); box-shadow: var(--shadow); }
.scene-card:hover::after { transform: scale(1.35); }
.scene-icon { width: 54px; height: 54px; flex: 0 0 auto; display: grid; place-items: center; border-radius: 14px; color: var(--blue); background: #edf5ff; }
.scene-icon svg { width: 30px; height: 30px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.scene-windows { color: #357bed; background: #eef5ff; }
.scene-android { color: #27a875; background: #eaf9f3; }
.scene-ios { color: #69758a; background: #f0f2f5; }
.scene-mac { color: #805be7; background: #f3efff; }
.scene-help { color: #ee8a2f; background: #fff3e8; }
.scene-copy { min-width: 0; display: flex; flex-direction: column; }
.scene-copy strong { color: #1a2a44; font-size: 17px; line-height: 1.45; }
.scene-copy small { margin-top: 7px; color: #8793a5; font-size: 13px; line-height: 1.55; }
.card-arrow { position: absolute; top: 19px; right: 19px; color: #b5bfcd; font-size: 18px; transition: color .2s ease, transform .2s ease; }
.scene-card:hover .card-arrow { color: var(--blue); transform: translateX(3px); }

.download-section { position: relative; overflow: hidden; background: linear-gradient(180deg, #f5f9ff 0%, #eef5ff 100%); }
.download-section::before { content: ""; position: absolute; width: 420px; height: 420px; right: -210px; top: -180px; border-radius: 50%; background: radial-gradient(circle, rgba(65,144,255,.14), rgba(65,144,255,0) 70%); }
.download-section .home-shell { position: relative; z-index: 1; }
.download-heading { align-items: center; }
.download-heading h2 { margin-bottom: 7px; }
.download-heading p { margin: 0; color: #7a879a; font-size: 14px; }
.download-security-note { margin-top: 16px; padding: 8px 12px; display: inline-flex; align-items: center; gap: 7px; border: 1px solid rgba(40,120,255,.16); border-radius: 20px; color: #5f7595; background: rgba(255,255,255,.72); font-size: 12px; }
.download-security-note svg { width: 17px; height: 17px; fill: none; stroke: var(--blue); stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.client-download-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.client-download-card { min-width: 0; min-height: 274px; padding: 22px; display: flex; flex-direction: column; border: 1px solid rgba(218,228,241,.92); border-radius: 14px; background: rgba(255,255,255,.94); box-shadow: 0 12px 34px rgba(36,75,126,.06); transition: transform .24s ease, border-color .24s ease, box-shadow .24s ease; }
.client-download-card:hover { transform: translateY(-4px); border-color: rgba(40,120,255,.28); box-shadow: 0 17px 42px rgba(36,75,126,.11); }
.client-card-top { display: flex; align-items: flex-start; justify-content: space-between; }
.client-platform-icon { width: 52px; height: 52px; display: grid; place-items: center; border-radius: 14px; color: #fff; background: linear-gradient(145deg, #348bff, #1464e6); box-shadow: 0 10px 22px rgba(30,105,226,.22); }
.client-platform-icon svg { width: 29px; height: 29px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.client-windows .client-platform-icon svg { fill: currentColor; stroke: none; }
.client-android .client-platform-icon { background: linear-gradient(145deg, #25bd83, #109d69); box-shadow: 0 10px 22px rgba(16,157,105,.2); }
.client-mac-arm .client-platform-icon { background: linear-gradient(145deg, #805ff1, #6041cf); box-shadow: 0 10px 22px rgba(96,65,207,.2); }
.client-mac-intel .client-platform-icon { background: linear-gradient(145deg, #5d6e89, #394a65); box-shadow: 0 10px 22px rgba(57,74,101,.2); }
.client-platform-tag { padding: 5px 9px; border-radius: 12px; color: #73829a; background: #f0f4f9; font-size: 10px; line-height: 1.3; }
.client-download-card h3 { margin: 19px 0 3px; color: #1b2b44; font-size: 19px; line-height: 1.4; }
.client-download-card > p { margin: 0; color: #8491a4; font-size: 12px; line-height: 1.6; }
.client-card-actions { margin-top: auto; padding-top: 20px; }
.client-download-button { min-height: 43px; padding: 0 14px; display: flex; align-items: center; justify-content: center; gap: 8px; border-radius: 9px; color: #fff; background: linear-gradient(135deg, #3184ff, #1766e5); box-shadow: 0 8px 18px rgba(23,102,229,.18); font-size: 13px; font-weight: 650; transition: transform .2s ease, box-shadow .2s ease; }
.client-download-button:hover { transform: translateY(-1px); box-shadow: 0 11px 23px rgba(23,102,229,.25); }
.client-download-button span { font-size: 16px; line-height: 1; }
.client-tutorial-link { margin-top: 11px; display: block; text-align: center; color: #748399; font-size: 12px; transition: color .2s ease; }
.client-tutorial-link:hover { color: var(--blue); }
.download-footnote { margin: 18px 0 0; color: #8491a4; font-size: 12px; text-align: center; }

.smart-download-layout { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(320px, .85fr); gap: 20px; align-items: stretch; }
.smart-download-main { position: relative; min-height: 430px; padding: 24px; overflow: hidden; border: 1px solid rgba(207,221,239,.92); border-radius: 17px; background: rgba(255,255,255,.96); box-shadow: 0 16px 42px rgba(34,74,127,.08); }
.smart-download-main::after { content: ""; position: absolute; width: 260px; height: 260px; right: -120px; bottom: -145px; border-radius: 50%; background: radial-gradient(circle, rgba(55,137,255,.12), rgba(55,137,255,0) 70%); pointer-events: none; }
.device-detection { width: fit-content; min-height: 32px; padding: 0 11px; display: flex; align-items: center; gap: 8px; border: 1px solid #dce8f8; border-radius: 17px; color: #62748f; background: #f5f9ff; font-size: 12px; }
.device-detection-dot { position: relative; width: 7px; height: 7px; border-radius: 50%; background: #20b67a; box-shadow: 0 0 0 4px rgba(32,182,122,.11); }
.smart-download-panel { display: none; padding: 36px 12px 4px; }
.smart-download-layout[data-detected-device="windows"] .smart-panel-windows,
.smart-download-layout[data-detected-device="mac"] .smart-panel-mac,
.smart-download-layout[data-detected-device="android"] .smart-panel-android,
.smart-download-layout[data-detected-device="ios"] .smart-panel-ios,
.smart-download-layout[data-detected-device="other"] .smart-panel-default { display: block; }
.smart-panel-content { display: flex; align-items: center; gap: 20px; }
.smart-panel-content .client-platform-icon { width: 68px; height: 68px; flex: 0 0 auto; border-radius: 18px; }
.smart-panel-content .client-platform-icon svg { width: 37px; height: 37px; }
.smart-panel-windows .client-platform-icon svg { fill: currentColor; stroke: none; }
.smart-panel-mac .client-platform-icon { background: linear-gradient(145deg, #805ff1, #6041cf); box-shadow: 0 10px 22px rgba(96,65,207,.2); }
.smart-panel-android .client-platform-icon { background: linear-gradient(145deg, #25bd83, #109d69); box-shadow: 0 10px 22px rgba(16,157,105,.2); }
.smart-panel-ios .client-platform-icon { background: linear-gradient(145deg, #475569, #1f2937); box-shadow: 0 10px 22px rgba(31,41,55,.2); }
.smart-recommended-tag { display: block; margin-bottom: 5px; color: var(--blue); font-size: 11px; line-height: 1.3; font-weight: 700; letter-spacing: .06em; }
.smart-panel-content h3 { margin: 0; color: #172943; font-size: 26px; line-height: 1.35; }
.smart-panel-content p { margin: 6px 0 0; color: #7b899d; font-size: 13px; }
.smart-panel-actions { margin-top: 28px; display: flex; align-items: center; gap: 18px; }
.smart-primary-download { min-height: 50px; padding: 0 24px; display: inline-flex; align-items: center; justify-content: center; gap: 9px; border-radius: 10px; color: #fff; background: linear-gradient(135deg, #3184ff, #1766e5); box-shadow: 0 10px 22px rgba(23,102,229,.22); font-size: 14px; font-weight: 650; transition: transform .2s ease, box-shadow .2s ease; }
.smart-primary-download:hover { transform: translateY(-2px); box-shadow: 0 13px 27px rgba(23,102,229,.28); }
.smart-primary-download span { font-size: 17px; }
.smart-primary-download.is-secondary { color: #315fbe; background: #eef4ff; box-shadow: none; }
.smart-primary-download.is-secondary:hover { background: #e3edff; box-shadow: none; }
.smart-mac-actions { flex-wrap: wrap; gap: 10px; }
.smart-tutorial-link { color: #6d7e95; font-size: 13px; transition: color .2s ease; }
.smart-tutorial-link:hover { color: var(--blue); }
.mac-intel-alternative { margin-top: 28px; padding: 15px 17px; display: flex; align-items: center; justify-content: space-between; gap: 18px; border: 1px solid #e2e9f2; border-radius: 11px; background: #f8fafc; }
.mac-intel-alternative > div { display: flex; flex-direction: column; }
.mac-intel-alternative strong { color: #39495f; font-size: 13px; }
.mac-intel-alternative span { margin-top: 2px; color: #8b97a8; font-size: 11px; }
.mac-intel-alternative a { flex: 0 0 auto; color: var(--blue); font-size: 12px; font-weight: 600; }
.smart-panel-default { padding-top: 48px; text-align: center; }
.smart-default-icon { width: 62px; height: 62px; margin: 0 auto 16px; display: grid; place-items: center; border-radius: 18px; color: #77869b; background: #eef3f9; }
.smart-default-icon svg { width: 31px; height: 31px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.smart-panel-default h3 { margin: 0; color: #26374f; font-size: 22px; }
.smart-panel-default p { max-width: 440px; margin: 10px auto 0; color: #7c899c; font-size: 13px; line-height: 1.75; }

.other-device-downloads { padding: 24px; border: 1px solid rgba(207,221,239,.92); border-radius: 17px; background: rgba(255,255,255,.9); box-shadow: 0 16px 42px rgba(34,74,127,.06); }
.other-device-heading > span { color: var(--blue); font-size: 10px; line-height: 1.2; font-weight: 700; letter-spacing: .1em; }
.other-device-heading h3 { margin: 4px 0 3px; color: #21334d; font-size: 19px; }
.other-device-heading p { margin: 0; color: #8995a6; font-size: 11px; }
.other-device-list { margin-top: 17px; display: grid; gap: 8px; }
.other-device-option { min-height: 65px; padding: 10px 11px; display: grid; grid-template-columns: 38px minmax(0, 1fr) auto; align-items: center; gap: 10px; border: 1px solid #e7edf5; border-radius: 10px; background: #fff; transition: border-color .2s ease, transform .2s ease, box-shadow .2s ease; }
.other-device-option:hover { transform: translateX(2px); border-color: rgba(40,120,255,.28); box-shadow: 0 7px 18px rgba(33,70,119,.06); }
.other-device-option.is-current { border-color: rgba(40,120,255,.32); background: #f5f9ff; }
.other-device-icon { width: 38px; height: 38px; display: grid; place-items: center; border-radius: 10px; color: #fff; background: linear-gradient(145deg, #3389ff, #1967e5); font-size: 13px; font-weight: 700; }
.option-mac .other-device-icon { background: linear-gradient(145deg, #805ff1, #6041cf); }
.option-android .other-device-icon { background: linear-gradient(145deg, #25bd83, #109d69); }
.option-ios .other-device-icon { background: linear-gradient(145deg, #475569, #1f2937); font-size: 11px; }
.other-device-option > span:nth-child(2) { min-width: 0; display: flex; flex-direction: column; }
.other-device-option strong { color: #34445b; font-size: 13px; }
.other-device-option small { margin-top: 1px; overflow: hidden; color: #8c98a9; font-size: 10px; text-overflow: ellipsis; white-space: nowrap; }
.other-device-option b { color: #8794a6; font-size: 11px; font-weight: 500; }
.other-device-option:hover b, .other-device-option.is-current b { color: var(--blue); }
.mac-version-links { display: flex; gap: 5px; }
.mac-version-links a { min-width: 43px; padding: 6px 7px; border-radius: 7px; color: #53657d; background: #f1f4f8; font-size: 10px; font-weight: 700; text-align: center; }
.mac-version-links a:hover { color: #fff; background: var(--blue); }
.download-judgement-tip { margin-top: 17px; padding: 14px 17px; display: flex; align-items: flex-start; gap: 11px; border: 1px solid #eadfca; border-radius: 11px; color: #7d6a4c; background: rgba(255,249,239,.8); }
.download-judgement-tip svg { width: 20px; height: 20px; flex: 0 0 auto; fill: none; stroke: #d68c24; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.download-judgement-tip > div { display: flex; flex-direction: column; }
.download-judgement-tip strong { color: #6d5839; font-size: 12px; }
.download-judgement-tip span { margin-top: 2px; font-size: 11px; line-height: 1.65; }

.client-modal { position: fixed; inset: 0; z-index: 1600; display: flex; align-items: center; justify-content: center; visibility: hidden; opacity: 0; transition: visibility .2s ease, opacity .2s ease; }
.client-modal.open { visibility: visible; opacity: 1; }
.client-modal-backdrop { position: absolute; inset: 0; background: rgba(17,31,53,.5); backdrop-filter: blur(3px); }
.client-modal-dialog { position: relative; z-index: 1; width: min(420px, calc(100% - 32px)); padding: 30px; border: 1px solid #e3eaf3; border-radius: 16px; background: #fff; box-shadow: 0 24px 70px rgba(16,37,69,.22); transform: translateY(10px) scale(.98); transition: transform .2s ease; }
.client-modal.open .client-modal-dialog { transform: translateY(0) scale(1); }
.client-modal-close { position: absolute; right: 13px; top: 10px; width: 36px; height: 36px; border: 0; background: transparent; color: #8995a7; font-size: 26px; cursor: pointer; }
.client-modal-icon { width: 46px; height: 46px; display: grid; place-items: center; border-radius: 13px; color: #f09a2c; background: #fff4e7; }
.client-modal-icon svg { width: 25px; height: 25px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.client-modal-dialog h3 { margin: 18px 0 8px; color: #1d2d46; font-size: 20px; }
.client-modal-dialog p { margin: 0; color: #728096; font-size: 14px; line-height: 1.75; }
.client-modal-device-check { margin-top: 18px; padding: 13px 14px; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; border-radius: 10px; background: #f5f8fc; }
.client-modal-device-check > div { min-width: 0; display: flex; flex-direction: column; }
.client-modal-device-check span { color: #98a3b2; font-size: 10px; }
.client-modal-device-check strong { margin-top: 3px; overflow: hidden; color: #3c4d64; font-size: 12px; text-overflow: ellipsis; white-space: nowrap; }
.client-modal-actions { margin-top: 24px; display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.client-modal-actions > * { min-height: 44px; display: inline-flex; align-items: center; justify-content: center; border-radius: 9px; font-size: 14px; cursor: pointer; }
.client-modal-actions > *[hidden] { display: none; }
.client-modal-cancel { border: 1px solid #dce4ef; color: #66758a; background: #fff; }
.client-modal-help { padding: 0 12px; border: 1px solid #cbd9ee; color: #42618d; background: #f7faff; text-align: center; }
.client-modal-continue { color: #fff; background: var(--blue); box-shadow: 0 8px 18px rgba(40,120,255,.2); }
.client-modal-continue:hover { background: var(--blue-dark); }
.client-modal.ios-prompt .client-modal-device-check { display: none; }
body.client-modal-open { overflow: hidden; }

.popular-layout { display: grid; grid-template-columns: minmax(0, 1fr) 345px; gap: 24px; align-items: start; }
.popular-list { overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
.popular-item { min-height: 66px; padding: 0 24px; display: flex; align-items: center; border-bottom: 1px solid #edf1f6; transition: background .2s ease; }
.popular-item:last-child { border-bottom: 0; }
.popular-item:hover { background: #f7faff; }
.question-number { width: 46px; flex: 0 0 auto; color: #a4afbe; font-size: 13px; font-variant-numeric: tabular-nums; }
.question-title { min-width: 0; flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: #344258; font-size: 15px; transition: color .2s ease; }
.question-arrow { margin-left: 18px; color: #b3bdca; transition: transform .2s ease, color .2s ease; }
.popular-item:hover .question-title, .popular-item:hover .question-arrow { color: var(--blue); }
.popular-item:hover .question-arrow { transform: translateX(4px); }
.support-cards { display: grid; gap: 14px; }
.support-card { min-height: 116px; padding: 22px; display: flex; align-items: center; gap: 16px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease; }
.support-card:hover { transform: translateY(-3px); border-color: rgba(40,120,255,.26); box-shadow: 0 12px 30px rgba(32,73,123,.07); }
.support-primary { color: #fff; border-color: transparent; background: linear-gradient(135deg, #3989ff, #216ce9); box-shadow: 0 14px 30px rgba(33,108,233,.2); }
.support-primary:hover { border-color: transparent; box-shadow: 0 18px 36px rgba(33,108,233,.26); }
.support-icon { width: 46px; height: 46px; flex: 0 0 auto; display: grid; place-items: center; border-radius: 12px; color: var(--blue); background: var(--blue-soft); }
.support-primary .support-icon { color: #fff; background: rgba(255,255,255,.16); }
.support-icon svg { width: 27px; height: 27px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.support-card > span:last-child { display: flex; min-width: 0; flex-direction: column; }
.support-card strong { color: #25354d; font-size: 15px; line-height: 1.45; }
.support-card small { margin-top: 4px; color: #8a96a7; font-size: 12px; }
.support-primary strong, .support-primary small { color: #fff; }
.support-primary small { opacity: .78; }

.site-footer { padding: 40px 0; border-top: 1px solid #e8edf4; background: #fff; color: #8792a3; }
.footer-inner { width: min(var(--shell), calc(100% - 40px)); margin: 0 auto; display: grid; grid-template-columns: 1fr auto auto; align-items: center; gap: 48px; }
.footer-brand { color: #344158; font-size: 15px; font-weight: 700; }
.footer-inner p { margin: 4px 0 0; font-size: 12px; }
.footer-links { display: flex; gap: 26px; font-size: 13px; }
.footer-links a:hover { color: var(--blue); }
.copyright { white-space: nowrap; }
.back-to-top { position: fixed; right: 28px; bottom: 28px; z-index: 700; width: 42px; height: 42px; padding: 0; display: grid; place-items: center; visibility: hidden; opacity: 0; transform: translateY(8px); border: 1px solid #dfe6f0; border-radius: 50%; background: #fff; color: #68768b; box-shadow: 0 8px 25px rgba(31,51,85,.12); cursor: pointer; transition: .2s ease; }
.back-to-top.visible { visibility: visible; opacity: 1; transform: translateY(0); }
.back-to-top:hover { color: #fff; border-color: var(--blue); background: var(--blue); }
.back-to-top svg { width: 21px; fill: none; stroke: currentColor; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; }

/* 文档、文章和搜索结果 */
.docs-container { width: min(1240px, calc(100% - 40px)); min-height: calc(100vh - 210px); margin: 0 auto; display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 48px; }
.docs-sidebar { position: sticky; top: 68px; height: calc(100vh - 68px); padding: 34px 22px 40px 0; overflow: auto; border-right: 1px solid var(--line); }
.sidebar-mobile-head { display: none; }
.sidebar-home { margin-bottom: 28px; padding: 9px 12px; display: flex; align-items: center; gap: 10px; border-radius: 8px; color: #4d5c72; font-size: 14px; font-weight: 500; }
.sidebar-home:hover { color: var(--blue); background: #f3f7fc; }
.sidebar-home svg { width: 18px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linejoin: round; }
.sidebar-title { margin: 0 12px 10px; color: #9aa5b5; font-size: 12px; line-height: 1.4; letter-spacing: .08em; font-weight: 600; }
.category-list, .sidebar-posts { margin: 0; padding: 0; list-style: none; }
.category-link { min-height: 42px; padding: 9px 11px; display: flex; align-items: center; justify-content: space-between; border-radius: 8px; color: #344258; font-size: 14px; font-weight: 600; }
.category-link:hover, .category-link.active { color: var(--blue); background: #f2f7ff; }
.category-link small { min-width: 22px; height: 19px; padding: 0 6px; display: inline-flex; align-items: center; justify-content: center; border-radius: 10px; color: #8793a5; background: #eef2f6; font-size: 11px; font-weight: 500; }
.sidebar-posts { margin: 3px 0 14px; }
.sidebar-posts a { position: relative; padding: 8px 10px 8px 25px; display: block; overflow: hidden; border-radius: 7px; color: #738096; font-size: 13px; line-height: 1.45; text-overflow: ellipsis; white-space: nowrap; }
.sidebar-posts a::before { content: ""; position: absolute; left: 12px; top: 16px; width: 4px; height: 4px; border-radius: 50%; background: #c1cad7; }
.sidebar-posts a:hover, .sidebar-posts a.active { color: var(--blue); background: #f6f9fd; }
.sidebar-posts a.active::before { background: var(--blue); }
.docs-main { min-width: 0; padding: 50px 0 80px; }
.docs-content { max-width: 900px; }
.sidebar-open-button { display: none; }
.post { background: #f7f9fc; }
.post .site-header, .post .docs-sidebar, .post .site-footer { background: #fff; }
.post .docs-container { grid-template-columns: 260px minmax(0, 1fr); gap: 34px; }
.post .docs-main { padding-top: 34px; }
.post .docs-content { max-width: 930px; }
.docs-article { padding: 38px 44px 42px; border: 1px solid #e7edf5; border-radius: 16px; background: #fff; box-shadow: 0 14px 42px rgba(32,73,123,.06); }
.article-breadcrumb { margin-bottom: 25px; display: flex; align-items: center; gap: 6px; color: #9aa5b4; font-size: 12px; }
.article-breadcrumb a { color: #748196; transition: color .2s ease; }
.article-breadcrumb a:hover { color: var(--blue); }
.article-breadcrumb svg { width: 14px; height: 14px; fill: none; stroke: #b8c1ce; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.article-label { margin-bottom: 9px; color: var(--blue); font-size: 12px; line-height: 1; font-weight: 700; letter-spacing: .1em; }
.article-header, .page-header, .archive-header { margin-bottom: 34px; padding-bottom: 25px; border-bottom: 1px solid var(--line); }
.article-title, .page-title, .archive-title { margin: 0; color: #182842; font-size: clamp(28px, 3vw, 36px); line-height: 1.35; letter-spacing: -.025em; }
.post .article-title { font-size: clamp(30px, 3.2vw, 40px); line-height: 1.28; }
.article-meta, .page-meta, .archive-meta, .item-meta { margin-top: 13px; display: flex; align-items: center; flex-wrap: wrap; gap: 9px 18px; color: #96a1b1; font-size: 12px; }
.meta-item { display: inline-flex; align-items: center; gap: 6px; }
.meta-icon { color: #a8b2c0; }
.article-category, .item-category { color: #748196; }
.article-category:hover, .item-category:hover { color: var(--blue); }
.article-content, .page-content { color: #39475d; font-size: 15.5px; line-height: 1.9; word-break: break-word; }
.post .article-content { color: #35445a; font-size: 16px; line-height: 1.95; }
.article-content h2, .page-content h2 { margin: 2.1em 0 .8em; padding-bottom: .5em; border-bottom: 1px solid var(--line); color: #1d2d47; font-size: 25px; line-height: 1.4; }
.post .article-content h2 { position: relative; padding: 0 0 0 14px; border: 0; }
.post .article-content h2::before { content: ""; position: absolute; left: 0; top: .25em; width: 4px; height: 1.05em; border-radius: 3px; background: linear-gradient(to bottom, #3c8dff, #1d67e7); }
.article-content h3, .page-content h3 { margin: 1.8em 0 .7em; color: #25354e; font-size: 20px; line-height: 1.45; }
.article-content h4, .page-content h4 { margin: 1.6em 0 .6em; color: #344258; font-size: 17px; }
.article-content p, .page-content p { margin: 1em 0; }
.article-content > p { white-space: pre-line; }
.article-content > p.is-empty { display: none; }
.article-content > .article-step-block { margin: 28px 0 16px; padding: 18px 20px; border: 1px solid #e3ecfa; border-left: 4px solid var(--blue); border-radius: 10px; background: linear-gradient(100deg, #f5f9ff, #fbfdff); color: #30415a; }
.article-content > .article-step-block:first-child { margin-top: 0; }
.article-content a, .page-content a { color: var(--blue); border-bottom: 1px solid rgba(40,120,255,.25); }
.article-content a:hover, .page-content a:hover { border-bottom-color: var(--blue); }
.article-content img, .page-content img { display: block; margin: 22px auto; border: 1px solid #edf1f6; border-radius: 10px; box-shadow: 0 8px 25px rgba(35,63,102,.07); }
.article-content details { margin: 14px 0; overflow: hidden; border: 1px solid #e4ebf4; border-radius: 11px; background: #fff; transition: border-color .2s ease, box-shadow .2s ease; }
.article-content details[open] { border-color: rgba(40,120,255,.28); box-shadow: 0 12px 30px rgba(39,78,132,.07); }
.article-content details > summary { position: relative; min-height: 58px; padding: 15px 54px 15px 20px; display: flex; align-items: center; color: #2e3e56; background: #fbfcfe; cursor: pointer; font-weight: 650; list-style: none; transition: color .2s ease, background .2s ease; }
.article-content details > summary::-webkit-details-marker { display: none; }
.article-content details > summary::after { content: ""; position: absolute; right: 20px; top: 50%; width: 9px; height: 9px; transform: translateY(-65%) rotate(45deg); border-right: 2px solid #8c99ab; border-bottom: 2px solid #8c99ab; transition: transform .2s ease, border-color .2s ease; }
.article-content details > summary:hover { color: var(--blue); background: #f6f9ff; }
.article-content details > summary:hover::after { border-color: var(--blue); }
.article-content details[open] > summary { color: var(--blue); border-bottom: 1px solid #e9eff7; background: #f4f8ff; }
.article-content details[open] > summary::after { transform: translateY(-35%) rotate(225deg); }
.article-content details > :not(summary) { margin-left: 22px; margin-right: 22px; }
.article-content details > img { max-width: calc(100% - 44px); }
.article-content hr { height: 1px; margin: 30px 0; border: 0; background: linear-gradient(to right, transparent, #dce5f0 8%, #dce5f0 92%, transparent); }
.article-content blockquote, .page-content blockquote { margin: 22px 0; padding: 13px 18px; border-left: 4px solid var(--blue); border-radius: 0 8px 8px 0; background: #f4f8ff; color: #53627a; }
.article-content code, .page-content code { padding: 2px 6px; border-radius: 4px; color: #d84d71; background: #f5f7fa; font-family: SFMono-Regular, Consolas, monospace; font-size: .9em; }
.article-content pre, .page-content pre { padding: 18px; overflow: auto; border-radius: 10px; background: #172033; color: #e6edf7; }
.article-content pre code, .page-content pre code { padding: 0; color: inherit; background: none; }
.article-content table, .page-content table { width: 100%; margin: 20px 0; border-collapse: collapse; overflow: hidden; border-radius: 8px; font-size: 14px; }
.article-content th, .article-content td, .page-content th, .page-content td { padding: 10px 13px; border: 1px solid #e3e9f1; text-align: left; }
.article-content th, .page-content th { background: #f5f8fc; }
.article-help-panel { margin-top: 44px; padding: 20px 22px; display: flex; align-items: center; justify-content: space-between; gap: 20px; border-radius: 11px; background: #f4f8ff; }
.article-help-panel > div { min-width: 0; display: flex; flex-direction: column; }
.article-help-panel strong { color: #253750; font-size: 15px; }
.article-help-panel span { margin-top: 3px; color: #8491a4; font-size: 12px; }
.article-help-panel a { flex: 0 0 auto; padding: 9px 15px; border-radius: 8px; color: #fff; background: var(--blue); font-size: 13px; font-weight: 600; box-shadow: 0 7px 16px rgba(40,120,255,.18); }
.article-help-panel a:hover { background: var(--blue-dark); }
.article-footer, .page-footer { margin-top: 28px; padding-top: 26px; border-top: 1px solid var(--line); }
.article-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.article-nav .nav-link { height: 100%; min-height: 88px; padding: 15px 18px; display: flex; align-items: center; gap: 12px; border: 1px solid var(--line); border-radius: 10px; transition: .2s ease; }
.article-nav .nav-link:hover { border-color: rgba(40,120,255,.3); box-shadow: 0 8px 24px rgba(32,73,123,.06); }
.nav-next .nav-link { justify-content: flex-end; text-align: right; }
.nav-icon { flex: 0 0 auto; color: #9ca7b7; }
.nav-text { min-width: 0; display: flex; flex-direction: column; }
.nav-label { color: #9ca7b7; font-size: 11px; }
.nav-title { margin-top: 3px; overflow: hidden; color: #435169; font-size: 13px; text-overflow: ellipsis; white-space: nowrap; }
.article-edit, .page-edit { margin-top: 16px; text-align: right; }
.edit-link { color: #8a96a8; font-size: 12px; }
.archive-list { display: grid; gap: 14px; }
.archive-item { padding: 24px; border: 1px solid var(--line); border-radius: 11px; background: #fff; transition: .2s ease; }
.archive-item:hover { transform: translateY(-2px); border-color: rgba(40,120,255,.28); box-shadow: 0 10px 28px rgba(32,73,123,.06); }
.item-header { margin: 0; }
.item-title { margin: 0; font-size: 19px; line-height: 1.45; }
.item-link { color: #26364e; }
.item-link:hover { color: var(--blue); }
.item-excerpt { margin-top: 12px; color: #7b8799; font-size: 13px; line-height: 1.75; }
.item-footer { margin-top: 12px; }
.tag { margin-right: 7px; color: #8a96a8; font-size: 11px; }
.archive-pagination { margin-top: 32px; }
.pagination { display: flex; gap: 8px; margin: 0; padding: 0; list-style: none; }
.pagination a { min-width: 36px; height: 36px; padding: 0 10px; display: inline-flex; align-items: center; justify-content: center; border: 1px solid var(--line); border-radius: 7px; color: #68758a; font-size: 13px; }
.pagination a:hover, .pagination .active a { color: #fff; border-color: var(--blue); background: var(--blue); }
.archive-empty, .docs-empty { padding: 90px 20px; text-align: center; color: #8a96a7; }
.empty-icon { color: #c7d2df; }
.archive-empty .empty-icon svg { margin: auto; }
.empty-title { color: #344158; }
.empty-link { display: inline-flex; margin-top: 15px; padding: 9px 18px; border-radius: 7px; color: #fff; background: var(--blue); }
.reading-progress { position: fixed; left: 0; right: 0; top: 68px; z-index: 999; height: 3px; pointer-events: none; }
.reading-progress span { display: block; width: 100%; height: 100%; transform: scaleX(0); transform-origin: left center; background: linear-gradient(90deg, #2f83ff, #57b4ff); box-shadow: 0 0 8px rgba(40,120,255,.35); will-change: transform; }

@media (max-width: 900px) {
    body.menu-open, body.sidebar-open { overflow: hidden; }
    .site-header { height: 62px; }
    .header-inner { width: min(100% - 30px, var(--shell)); }
    .brand-mark, .brand-mark svg { width: 30px; height: 30px; }
    .brand-name { font-size: 15px; }
    .brand-divider { margin: 0 9px; }
    .brand-subtitle { font-size: 14px; }
    .header-menu-button { display: block; }
    .header-menu { position: fixed; left: 0; right: 0; top: 62px; z-index: 900; height: auto; padding: 12px 20px 20px; display: block; visibility: hidden; opacity: 0; transform: translateY(-8px); background: #fff; box-shadow: 0 15px 30px rgba(21,42,76,.12); transition: .2s ease; }
    .menu-open .header-menu { visibility: visible; opacity: 1; transform: translateY(0); }
    .header-menu > a { height: 46px; display: flex; border-bottom: 1px solid #f0f3f7; }
    .header-menu > a.active::after { display: none; }
    .header-search { width: 100%; margin-top: 14px; }
    .header-search:focus-within { width: 100%; }
    .menu-open .header-menu-button span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .menu-open .header-menu-button span:nth-child(2) { opacity: 0; }
    .menu-open .header-menu-button span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
    .menu-open .mobile-backdrop, .sidebar-open .mobile-backdrop { visibility: visible; opacity: 1; }
    .help-hero { min-height: 400px; padding: 72px 0 66px; }
    .scene-grid { grid-template-columns: repeat(2, 1fr); }
    .client-download-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .smart-download-layout { grid-template-columns: 1fr; }
    .smart-download-main { min-height: 400px; }
    .other-device-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .popular-layout { grid-template-columns: 1fr; }
    .support-cards { grid-template-columns: repeat(3, 1fr); }
    .support-card { min-height: 148px; align-items: flex-start; flex-direction: column; }
    .footer-inner { grid-template-columns: 1fr auto; }
    .copyright { grid-column: 1 / -1; }
    .docs-container { width: min(100% - 32px, 900px); display: block; }
    .docs-sidebar { position: fixed; left: 0; top: 0; bottom: 0; z-index: 1100; width: min(82vw, 320px); height: 100vh; padding: 0 18px 30px; transform: translateX(-105%); border: 0; background: #fff; box-shadow: 10px 0 35px rgba(16,34,64,.18); transition: transform .25s ease; }
    .sidebar-open .docs-sidebar { transform: translateX(0); }
    .sidebar-mobile-head { position: sticky; top: 0; z-index: 1; height: 62px; margin: 0 -18px 18px; padding: 0 18px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); background: #fff; }
    .sidebar-close { width: 38px; height: 38px; border: 0; background: transparent; color: #6e7b90; font-size: 28px; cursor: pointer; }
    .docs-main { padding: 24px 0 65px; }
    .post .docs-main { padding-top: 22px; }
    .docs-article { padding: 30px 28px 34px; }
    .sidebar-open-button { height: 40px; margin-bottom: 24px; padding: 0 13px; display: inline-flex; align-items: center; gap: 7px; border: 1px solid var(--line); border-radius: 8px; background: #fff; color: #59677c; font-size: 13px; cursor: pointer; }
    .sidebar-open-button svg { width: 17px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; }
    .reading-progress { top: 62px; }
}

@media (max-width: 640px) {
    .home-shell { width: calc(100% - 30px); }
    .help-hero { min-height: 374px; padding: 61px 0 55px; }
    .hero-eyebrow { font-size: 10px; }
    .hero-content h1 { font-size: 30px; }
    .hero-intro { margin: 10px 0 24px; font-size: 14px; }
    .hero-search { height: 56px; padding: 6px 6px 6px 16px; gap: 8px; }
    .hero-search-icon { width: 20px; }
    .hero-search input { font-size: 14px; }
    .hero-search button { width: 72px; height: 44px; font-size: 14px; }
    .hot-searches { gap: 7px 14px; font-size: 12px; }
    .hot-searches span { width: 100%; }
    .home-section { padding: 54px 0; }
    .scene-section { padding-top: 48px; }
    .section-heading { margin-bottom: 20px; align-items: center; }
    .section-heading h2 { font-size: 23px; }
    .section-more { font-size: 12px; }
    .scene-grid { grid-template-columns: 1fr; gap: 12px; }
    .scene-card { min-height: 112px; padding: 20px; }
    .scene-icon { width: 48px; height: 48px; }
    .scene-icon svg { width: 27px; height: 27px; }
    .scene-copy strong { font-size: 16px; }
    .scene-copy small { margin-top: 4px; }
    .download-heading { align-items: flex-start; }
    .download-security-note { display: none; }
    .smart-download-layout { gap: 13px; }
    .smart-download-main, .other-device-downloads { padding: 17px; border-radius: 14px; }
    .smart-download-main { min-height: 0; }
    .smart-download-panel { padding: 27px 0 2px; }
    .smart-panel-content { align-items: flex-start; gap: 13px; }
    .smart-panel-content .client-platform-icon { width: 54px; height: 54px; border-radius: 14px; }
    .smart-panel-content .client-platform-icon svg { width: 30px; height: 30px; }
    .smart-panel-content h3 { font-size: 21px; }
    .smart-panel-content p { font-size: 11px; }
    .smart-panel-actions { margin-top: 22px; align-items: stretch; flex-direction: column; gap: 12px; }
    .smart-primary-download { width: 100%; min-height: 48px; padding: 0 15px; }
    .smart-tutorial-link { text-align: center; }
    .mac-intel-alternative { margin-top: 20px; padding: 14px; align-items: flex-start; flex-direction: column; gap: 9px; }
    .mac-intel-alternative a { width: 100%; padding: 9px 10px; border-radius: 8px; background: #eef4ff; text-align: center; }
    .smart-panel-default { padding: 34px 8px 20px; }
    .other-device-list { grid-template-columns: 1fr; }
    .other-device-option { min-height: 62px; }
    .download-judgement-tip { padding: 13px 14px; }
    .client-download-grid { grid-template-columns: 1fr; gap: 12px; }
    .client-download-card { min-height: 0; padding: 19px; display: grid; grid-template-columns: 54px minmax(0, 1fr); column-gap: 14px; }
    .client-card-top { grid-row: 1 / span 2; display: block; }
    .client-platform-icon { width: 50px; height: 50px; }
    .client-platform-tag { display: none; }
    .client-download-card h3 { margin: 2px 0 2px; }
    .client-download-card > p { grid-column: 2; }
    .client-card-actions { grid-column: 1 / -1; padding-top: 17px; display: grid; grid-template-columns: minmax(0, 1fr) 96px; align-items: center; gap: 9px; }
    .client-tutorial-link { margin: 0; }
    .download-footnote { text-align: left; line-height: 1.7; }
    .client-modal-dialog { padding: 25px 21px 21px; }
    .popular-item { min-height: 62px; padding: 0 16px; }
    .question-number { width: 37px; }
    .support-cards { grid-template-columns: 1fr; }
    .support-card { min-height: 100px; padding: 18px; align-items: center; flex-direction: row; }
    .site-footer { padding: 34px 0; }
    .footer-inner { grid-template-columns: 1fr; gap: 22px; }
    .footer-links { gap: 20px; }
    .copyright { grid-column: auto; }
    .back-to-top { right: 16px; bottom: 16px; }
    .docs-container { width: calc(100% - 30px); }
    .post .docs-container { width: 100%; }
    .post .docs-main { padding: 16px 12px 50px; }
    .docs-article { padding: 23px 18px 27px; border-radius: 13px; }
    .article-breadcrumb { margin-bottom: 20px; overflow: hidden; white-space: nowrap; }
    .article-breadcrumb span { overflow: hidden; text-overflow: ellipsis; }
    .article-header, .page-header, .archive-header { margin-bottom: 26px; padding-bottom: 20px; }
    .article-title, .page-title, .archive-title { font-size: 27px; }
    .article-content, .page-content { font-size: 15px; line-height: 1.82; }
    .article-content h2, .page-content h2 { font-size: 22px; }
    .article-content h3, .page-content h3 { font-size: 19px; }
    .article-content > .article-step-block { margin: 22px 0 14px; padding: 15px 16px; }
    .article-content details > summary { min-height: 54px; padding: 13px 46px 13px 16px; }
    .article-content details > summary::after { right: 17px; }
    .article-content details > :not(summary) { margin-left: 14px; margin-right: 14px; }
    .article-content details > img { max-width: calc(100% - 28px); }
    .article-help-panel { margin-top: 32px; padding: 18px; align-items: flex-start; flex-direction: column; }
    .article-help-panel a { width: 100%; text-align: center; }
    .article-nav { grid-template-columns: 1fr; }
    .archive-item { padding: 19px; }
}

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