:root {
    --apple-bg: #f5f5f7;
    --apple-bg-raised: #fbfbfd;
    --apple-card: rgba(255, 255, 255, 0.86);
    --apple-card-solid: #ffffff;
    --apple-text: #1d1d1f;
    --apple-muted: #6e6e73;
    --apple-subtle: #86868b;
    --apple-line: rgba(29, 29, 31, 0.1);
    --apple-line-soft: rgba(29, 29, 31, 0.06);
    --apple-blue: #0071e3;
    --apple-blue-pressed: #0077ed;
    --apple-green: #34c759;
    --apple-teal: #00a6a6;
    --apple-orange: #ff9f0a;
    --apple-red: #ff3b30;
    --apple-radius-sm: 14px;
    --apple-radius-md: 22px;
    --apple-radius-lg: 30px;
    --apple-radius-xl: 38px;
    --apple-shadow-soft: 0 18px 50px rgba(0, 0, 0, 0.06);
    --apple-shadow-card: 0 26px 80px rgba(0, 0, 0, 0.08);
    --apple-blur-bg: rgba(255, 255, 255, 0.74);
    --apple-ease: cubic-bezier(0.2, 0.72, 0.24, 1);
}

body.apple-ui {
    background:
        linear-gradient(180deg, #fbfbfd 0%, var(--apple-bg) 46%, #f8f8fb 100%);
    color: var(--apple-text);
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
}

body.apple-ui a {
    color: inherit;
}

body.apple-ui .btn,
body.apple-ui .auth-feedback-btn,
body.apple-ui .dashboard-primary-link,
body.apple-ui .dashboard-secondary-link,
body.apple-ui .course-link,
body.apple-ui .course-price-link,
body.apple-ui .words-add-btn,
body.apple-ui .vocab-ai-generate-btn,
body.apple-ui .vocab-add-primary,
body.apple-ui .vocab-add-secondary {
    min-height: 42px;
    border-radius: 999px;
    font-weight: 650;
    letter-spacing: 0;
    transition:
        transform 0.18s var(--apple-ease),
        box-shadow 0.18s ease,
        background 0.18s ease,
        border-color 0.18s ease,
        color 0.18s ease;
}

body.apple-ui .btn-login,
body.apple-ui .auth-feedback-btn,
body.apple-ui .dashboard-secondary-link,
body.apple-ui .course-price-link,
body.apple-ui .vocab-add-secondary {
    border: 1px solid var(--apple-line);
    background: rgba(255, 255, 255, 0.74);
    color: var(--apple-text);
    box-shadow: none;
}

body.apple-ui .btn-register,
body.apple-ui .btn-primary,
body.apple-ui .dashboard-primary-link,
body.apple-ui .course-link,
body.apple-ui .vocab-ai-generate-btn,
body.apple-ui .vocab-add-primary {
    border: 1px solid transparent;
    background: var(--apple-blue);
    color: #fff;
    box-shadow: 0 12px 28px rgba(0, 113, 227, 0.18);
}

body.apple-ui .btn:hover,
body.apple-ui .auth-feedback-btn:hover,
body.apple-ui .dashboard-primary-link:hover,
body.apple-ui .dashboard-secondary-link:hover,
body.apple-ui .course-link:hover,
body.apple-ui .course-price-link:hover,
body.apple-ui .words-add-btn:hover,
body.apple-ui .vocab-ai-generate-btn:hover,
body.apple-ui .vocab-add-primary:hover,
body.apple-ui .vocab-add-secondary:hover {
    transform: translateY(-1px);
}

body.apple-ui .btn-register:hover,
body.apple-ui .btn-primary:hover,
body.apple-ui .dashboard-primary-link:hover,
body.apple-ui .course-link:hover,
body.apple-ui .vocab-ai-generate-btn:hover,
body.apple-ui .vocab-add-primary:hover {
    background: var(--apple-blue-pressed);
    box-shadow: 0 16px 36px rgba(0, 113, 227, 0.22);
}

body.apple-ui .page-shell {
    --sidebar-width: 220px;
    width: min(1220px, calc(100% - 48px));
    max-width: none;
    margin: 36px auto 84px;
    padding: 0;
    grid-template-columns: var(--sidebar-width) 10px minmax(0, 1fr);
    gap: 18px;
}

body.apple-ui .sidebar {
    top: 84px;
    padding: 8px;
    border: 1px solid var(--apple-line);
    border-radius: 24px;
    background: var(--apple-blur-bg);
    box-shadow: 0 18px 44px rgba(0, 0, 0, 0.05);
    backdrop-filter: saturate(180%) blur(24px);
    -webkit-backdrop-filter: saturate(180%) blur(24px);
}

body.apple-ui .resize-handle {
    top: 84px;
}

body.apple-ui .resize-handle::before {
    background: rgba(29, 29, 31, 0.12);
}

body.apple-ui .resize-handle:hover::before,
body.apple-ui.is-resizing .resize-handle::before {
    background: var(--apple-blue);
}

body.apple-ui .side-nav {
    gap: 3px;
}

body.apple-ui .side-nav-item {
    min-height: 42px;
    margin: 0;
    padding: 0 14px;
    border-radius: 16px;
    color: #3f3f46;
    display: flex;
    align-items: center;
    font-size: 15px;
    font-weight: 650;
}

body.apple-ui .side-nav-item:hover {
    background: rgba(29, 29, 31, 0.05);
    color: var(--apple-text);
}

body.apple-ui .side-nav-item.active {
    background: #1d1d1f;
    color: #fff;
    box-shadow: none;
    transform: none;
}

body.apple-ui .page-panel {
    opacity: 0;
    transform: translateY(10px);
}

body.apple-ui .page-panel.active {
    animation: appleFadeUp 0.32s var(--apple-ease) forwards;
}

@keyframes appleFadeUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes applePanelFadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

body.apple-ui .home-panel,
body.apple-ui .course-panel,
body.apple-ui #words,
body.apple-ui #rank {
    min-height: 0;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
    overflow: visible;
}

body.apple-ui .course-eyebrow,
body.apple-ui .dashboard-section-kicker,
body.apple-ui .word-source,
body.apple-ui .word-details dt {
    color: var(--apple-subtle);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0;
    text-transform: uppercase;
}

body.apple-ui .course-header,
body.apple-ui .words-page-head,
body.apple-ui .rank-hero {
    max-width: 780px;
    margin: 0 auto 28px;
    text-align: center;
}

body.apple-ui .course-header h1,
body.apple-ui .words-page-head h1,
body.apple-ui .rank-hero h1 {
    margin: 8px 0 0;
    color: var(--apple-text);
    font-size: 52px;
    line-height: 1.05;
    font-weight: 760;
    letter-spacing: 0;
}

body.apple-ui .course-header p,
body.apple-ui .words-page-head p:last-child,
body.apple-ui .rank-hero p:last-child {
    max-width: 680px;
    margin: 14px auto 0;
    color: var(--apple-muted);
    font-size: 18px;
    line-height: 1.72;
}

/* Guest homepage */
body.apple-ui.is-guest-home {
    background:
        linear-gradient(180deg, #ffffff 0%, #f5f5f7 50%, #fbfbfd 100%);
}

body.apple-ui.is-guest-home .page-shell {
    width: min(1180px, calc(100% - 40px));
    margin: 0 auto;
    padding: 28px 0 76px;
    display: block;
}

body.apple-ui.is-guest-home .sidebar,
body.apple-ui.is-guest-home .resize-handle,
body.apple-ui.is-guest-home .app-side-nav,
body.apple-ui.is-guest-home .guest-side-nav {
    display: none;
}

body.apple-ui.is-guest-home .home-marketing {
    display: block;
}

body.apple-ui.is-guest-home .home-marketing h1,
body.apple-ui.is-guest-home .home-marketing h2,
body.apple-ui.is-guest-home .home-marketing h3,
body.apple-ui.is-guest-home .home-marketing p {
    margin: 0;
    letter-spacing: 0;
}

body.apple-ui.is-guest-home .home-marketing .hero {
    min-height: 0;
    padding: 72px 0 34px;
    display: block;
    text-align: center;
}

body.apple-ui.is-guest-home .home-marketing .hero-copy {
    max-width: 800px;
    margin: 0 auto;
}

body.apple-ui.is-guest-home .home-marketing .hero-badge {
    width: fit-content;
    margin: 0 auto 18px;
    padding: 8px 14px;
    border: 1px solid rgba(0, 113, 227, 0.14);
    border-radius: 999px;
    color: #1264b8;
    background: rgba(255, 255, 255, 0.72);
    box-shadow: 0 10px 26px rgba(0, 0, 0, 0.04);
    font-size: 13px;
    font-weight: 650;
}

body.apple-ui.is-guest-home .home-marketing .eyebrow {
    color: var(--apple-subtle);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0;
    text-transform: uppercase;
}

body.apple-ui.is-guest-home .home-marketing .hero h1 {
    max-width: 820px;
    margin: 14px auto 0;
    color: var(--apple-text);
    font-size: 64px;
    line-height: 1.03;
    font-weight: 780;
}

body.apple-ui.is-guest-home .home-marketing .hero-subtitle {
    max-width: 660px;
    margin: 22px auto 0;
    color: var(--apple-muted);
    font-size: 21px;
    line-height: 1.65;
}

body.apple-ui.is-guest-home .home-marketing .hero-actions {
    margin-top: 30px;
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

body.apple-ui.is-guest-home .home-marketing .btn {
    min-height: 46px;
    height: auto;
    padding: 0 22px;
    border-radius: 999px;
    border: 1px solid transparent;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    white-space: nowrap;
}

body.apple-ui.is-guest-home .home-marketing .btn-primary {
    color: #fff;
    background: var(--apple-blue);
}

body.apple-ui.is-guest-home .home-marketing .btn-ghost,
body.apple-ui.is-guest-home .home-marketing .btn-light {
    color: var(--apple-blue);
    background: transparent;
    border-color: transparent;
    box-shadow: none;
}

body.apple-ui.is-guest-home .home-marketing .btn-ghost:hover,
body.apple-ui.is-guest-home .home-marketing .btn-light:hover {
    background: rgba(0, 113, 227, 0.07);
}

body.apple-ui.is-guest-home .home-marketing .demo-stage {
    width: min(100%, 930px);
    margin: 38px auto 0;
    padding: 14px;
    border: 1px solid rgba(29, 29, 31, 0.08);
    border-radius: 36px;
    background: rgba(255, 255, 255, 0.72);
    box-shadow: var(--apple-shadow-card);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    text-align: left;
}

body.apple-ui.is-guest-home .home-marketing .learning-preview {
    overflow: hidden;
    border-radius: 28px;
    padding: 24px;
    background: linear-gradient(180deg, #ffffff 0%, #f5f7fb 100%);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

body.apple-ui.is-guest-home .home-marketing .preview-panel-top,
body.apple-ui.is-guest-home .home-marketing .preview-main,
body.apple-ui.is-guest-home .home-marketing .preview-step-list {
    display: grid;
    gap: 16px;
}

body.apple-ui.is-guest-home .home-marketing .preview-panel-top {
    grid-template-columns: 1fr auto;
    align-items: center;
    margin-bottom: 16px;
}

body.apple-ui.is-guest-home .home-marketing .preview-main {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
}

body.apple-ui.is-guest-home .home-marketing .preview-pill,
body.apple-ui.is-guest-home .home-marketing .preview-status {
    width: fit-content;
    min-height: 32px;
    padding: 0 12px;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    color: var(--apple-blue);
    background: rgba(0, 113, 227, 0.08);
    font-size: 13px;
    font-weight: 650;
}

body.apple-ui.is-guest-home .home-marketing .preview-status {
    justify-self: end;
    color: var(--apple-muted);
    background: rgba(29, 29, 31, 0.05);
}

body.apple-ui.is-guest-home .home-marketing .preview-video-card,
body.apple-ui.is-guest-home .home-marketing .preview-training-card,
body.apple-ui.is-guest-home .home-marketing .preview-step-list span {
    border: 1px solid var(--apple-line-soft);
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.86);
    box-shadow: 0 14px 36px rgba(0, 0, 0, 0.045);
}

body.apple-ui.is-guest-home .home-marketing .preview-video-card {
    overflow: hidden;
}

body.apple-ui.is-guest-home .home-marketing .preview-video-card img {
    width: 100%;
    aspect-ratio: 16 / 10;
    display: block;
    object-fit: cover;
    object-position: center;
}

body.apple-ui.is-guest-home .home-marketing .preview-video-card div {
    padding: 18px 20px 20px;
}

body.apple-ui.is-guest-home .home-marketing .preview-video-card strong,
body.apple-ui.is-guest-home .home-marketing .preview-training-card h3 {
    color: var(--apple-text);
}

body.apple-ui.is-guest-home .home-marketing .preview-video-card strong {
    display: block;
    font-size: 18px;
    line-height: 1.24;
}

body.apple-ui.is-guest-home .home-marketing .preview-video-card span {
    display: block;
    margin-top: 7px;
    color: var(--apple-muted);
    font-size: 14px;
    line-height: 1.45;
}

body.apple-ui.is-guest-home .home-marketing .preview-training-card {
    padding: 28px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

body.apple-ui.is-guest-home .home-marketing .preview-training-card p {
    color: var(--apple-teal);
    font-size: 13px;
    line-height: 1.2;
    font-weight: 700;
}

body.apple-ui.is-guest-home .home-marketing .preview-training-card h3 {
    margin-top: 10px;
    font-size: 30px;
    line-height: 1.16;
    font-weight: 760;
}

body.apple-ui.is-guest-home .home-marketing .preview-meter {
    height: 8px;
    margin: 22px 0 18px;
    overflow: hidden;
    border-radius: 999px;
    background: rgba(29, 29, 31, 0.08);
}

body.apple-ui.is-guest-home .home-marketing .preview-meter span {
    width: 68%;
    height: 100%;
    display: block;
    border-radius: inherit;
    background: var(--apple-green);
}

body.apple-ui.is-guest-home .home-marketing .preview-note {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 10px;
    color: var(--apple-muted);
    font-size: 14px;
    line-height: 1.55;
}

body.apple-ui.is-guest-home .home-marketing .preview-note b {
    color: var(--apple-teal);
    font-size: 13px;
    white-space: nowrap;
}

body.apple-ui.is-guest-home .home-marketing .preview-step-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin-top: 16px;
}

body.apple-ui.is-guest-home .home-marketing .preview-step-list span {
    min-height: 56px;
    padding: 12px 13px;
    display: flex;
    align-items: center;
    gap: 8px;
    color: #3f3f46;
    font-size: 14px;
    font-weight: 650;
}

body.apple-ui.is-guest-home .home-marketing .preview-step-list b {
    color: var(--apple-blue);
    font-size: 12px;
}

body.apple-ui.is-guest-home .home-marketing .stats-strip {
    width: min(100%, 1000px);
    margin: 30px auto 42px;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
}

body.apple-ui.is-guest-home .home-marketing .stats-strip .stat,
body.apple-ui.is-guest-home .home-marketing .feature-row,
body.apple-ui.is-guest-home .home-marketing .flow-step {
    border: 1px solid var(--apple-line-soft);
    background: var(--apple-card);
    box-shadow: var(--apple-shadow-soft);
    backdrop-filter: blur(22px) saturate(180%);
    -webkit-backdrop-filter: blur(22px) saturate(180%);
}

body.apple-ui.is-guest-home .home-marketing .stats-strip .stat {
    min-height: 114px;
    padding: 20px 18px;
    border-radius: 24px;
    display: grid;
    grid-template-columns: 48px minmax(0, 1fr);
    gap: 14px;
    align-items: center;
    text-align: left;
}

body.apple-ui.is-guest-home .home-marketing .stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 16px;
    display: grid;
    place-items: center;
    color: var(--stat-accent, var(--apple-blue));
    background: rgba(29, 29, 31, 0.04);
}

body.apple-ui.is-guest-home .home-marketing .stat-icon svg {
    width: 27px;
    height: 27px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.9;
    stroke-linecap: round;
    stroke-linejoin: round;
}

body.apple-ui.is-guest-home .home-marketing .stat.is-plan {
    --stat-accent: var(--apple-blue);
}

body.apple-ui.is-guest-home .home-marketing .stat.is-access {
    --stat-accent: var(--apple-teal);
}

body.apple-ui.is-guest-home .home-marketing .stat.is-update {
    --stat-accent: var(--apple-orange);
}

body.apple-ui.is-guest-home .home-marketing .stat.is-device {
    --stat-accent: #af52de;
}

body.apple-ui.is-guest-home .home-marketing .stat-copy {
    min-width: 0;
    display: grid;
    gap: 6px;
}

body.apple-ui.is-guest-home .home-marketing .stat-copy strong {
    color: var(--apple-text);
    font-size: 19px;
    line-height: 1.15;
    font-weight: 720;
}

body.apple-ui.is-guest-home .home-marketing .stat-copy span {
    color: var(--apple-muted);
    font-size: 13px;
    line-height: 1.45;
}

body.apple-ui.is-guest-home .home-marketing .section {
    margin-top: 92px;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
}

body.apple-ui.is-guest-home .home-marketing .section-title-center {
    max-width: 760px;
    margin: 0 auto 58px;
    text-align: center;
}

body.apple-ui.is-guest-home .home-marketing .section-title-center h2,
body.apple-ui.is-guest-home .home-marketing .trial-section h2 {
    margin-top: 8px;
    color: var(--apple-text);
    font-size: 52px;
    line-height: 1.08;
    font-weight: 760;
}

body.apple-ui.is-guest-home .home-marketing .feature-stack {
    display: grid;
    gap: 28px;
}

body.apple-ui.is-guest-home .home-marketing .feature-row {
    min-height: 360px;
    padding: 28px;
    border-radius: 32px;
    display: grid;
    grid-template-columns: 0.86fr 1.14fr;
    gap: 30px;
    align-items: center;
}

body.apple-ui.is-guest-home .home-marketing .feature-row-reverse {
    grid-template-columns: 1.14fr 0.86fr;
}

body.apple-ui.is-guest-home .home-marketing .feature-row-reverse .feature-copy {
    order: 2;
}

body.apple-ui.is-guest-home .home-marketing .feature-copy h3 {
    color: var(--apple-text);
    font-size: 31px;
    line-height: 1.16;
    font-weight: 720;
}

body.apple-ui.is-guest-home .home-marketing .feature-copy p {
    margin-top: 16px;
    color: var(--apple-muted);
    font-size: 16px;
    line-height: 1.86;
}

body.apple-ui.is-guest-home .home-marketing .feature-media {
    min-width: 0;
    display: flex;
    justify-content: center;
    align-items: center;
}

body.apple-ui.is-guest-home .home-marketing .feature-media::before,
body.apple-ui.is-guest-home .home-marketing .feature-media::after {
    content: none;
}

body.apple-ui.is-guest-home .home-marketing .feature-media img {
    width: auto;
    max-width: 100%;
    max-height: 420px;
    display: block;
    object-fit: contain;
    object-position: center;
    padding: 10px;
    border: 1px solid var(--apple-line);
    border-radius: 26px;
    background: #fff;
    box-shadow: 0 18px 46px rgba(0, 0, 0, 0.08);
}

body.apple-ui.is-guest-home .home-marketing .learning-flow {
    position: relative;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
}

body.apple-ui.is-guest-home .home-marketing .learning-flow::before {
    content: none;
}

body.apple-ui.is-guest-home .home-marketing .flow-step {
    min-height: 174px;
    padding: 20px;
    border-radius: 26px;
    display: grid;
    grid-template-rows: auto auto 1fr;
    overflow: hidden;
    animation: none;
}

body.apple-ui.is-guest-home .home-marketing .flow-node {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #1d1d1f;
    color: #fff;
    display: grid;
    place-items: center;
    font-size: 13px;
    font-weight: 700;
}

body.apple-ui.is-guest-home .home-marketing .flow-icon {
    width: 50px;
    height: 50px;
    margin: 17px 0 15px;
    border-radius: 18px;
    background: rgba(0, 113, 227, 0.08);
    color: var(--apple-blue);
    display: grid;
    place-items: center;
}

body.apple-ui.is-guest-home .home-marketing .flow-icon svg {
    width: 27px;
    height: 27px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
}

body.apple-ui.is-guest-home .home-marketing .flow-step strong {
    color: var(--apple-text);
    font-size: 19px;
    line-height: 1.25;
    font-weight: 720;
}

body.apple-ui.is-guest-home .home-marketing .flow-step p {
    margin-top: 8px;
    color: var(--apple-muted);
    font-size: 14px;
    line-height: 1.6;
}

body.apple-ui.is-guest-home .home-marketing #faq {
    margin-top: 104px;
    padding: 96px 0 110px;
    background: #f5f5f7;
    box-shadow: 0 0 0 100vmax #f5f5f7;
    clip-path: inset(0 -100vmax);
}

body.apple-ui.is-guest-home .home-marketing .faq-title {
    margin-bottom: 48px;
}

body.apple-ui.is-guest-home .home-marketing .faq-list-modern {
    max-width: 880px;
    margin: 0 auto;
}

body.apple-ui.is-guest-home .home-marketing .faq-list-modern details {
    border-bottom: 1px solid rgba(29, 29, 31, 0.1);
}

body.apple-ui.is-guest-home .home-marketing .faq-list-modern details:first-child {
    border-top: 1px solid rgba(29, 29, 31, 0.1);
}

body.apple-ui.is-guest-home .home-marketing .faq-list-modern summary {
    min-height: 76px;
    padding: 0;
    color: var(--apple-text);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    cursor: pointer;
    list-style: none;
    font-size: 19px;
    line-height: 1.35;
    font-weight: 500;
}

body.apple-ui.is-guest-home .home-marketing .faq-list-modern summary::-webkit-details-marker {
    display: none;
}

body.apple-ui.is-guest-home .home-marketing .faq-list-modern summary b {
    color: var(--apple-subtle);
    font-size: 32px;
    line-height: 1;
    font-weight: 400;
    transition: transform 0.18s ease;
}

body.apple-ui.is-guest-home .home-marketing .faq-list-modern details[open] summary b {
    transform: rotate(90deg);
}

body.apple-ui.is-guest-home .home-marketing .faq-list-modern p {
    max-width: 720px;
    margin: -6px 0 26px;
    color: var(--apple-muted);
    font-size: 16px;
    line-height: 1.8;
}

body.apple-ui.is-guest-home .home-marketing .trial-section {
    margin-top: 92px;
    padding: 74px 0 60px;
    text-align: center;
}

body.apple-ui.is-guest-home .home-marketing .trial-button {
    width: fit-content;
    margin-top: 34px;
    padding: 0 26px;
}

/* Member homepage */
body.apple-ui:not(.is-guest-home) .home-dashboard {
    color: var(--apple-text);
}

body.apple-ui:not(.is-guest-home) .dashboard-shell {
    gap: 24px;
}

body.apple-ui:not(.is-guest-home) .dashboard-hero,
body.apple-ui:not(.is-guest-home) .dashboard-results-row,
body.apple-ui:not(.is-guest-home) .dashboard-grid {
    display: grid;
    gap: 22px;
}

body.apple-ui:not(.is-guest-home) .dashboard-hero {
    grid-template-columns: minmax(0, 1.25fr) minmax(320px, 0.75fr);
    margin-bottom: 0;
}

body.apple-ui:not(.is-guest-home) .dashboard-results-row {
    grid-template-columns: minmax(340px, 0.74fr) minmax(0, 1fr);
    margin-bottom: 0;
}

body.apple-ui:not(.is-guest-home) .dashboard-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

body.apple-ui:not(.is-guest-home) .dashboard-card,
body.apple-ui:not(.is-guest-home) .dashboard-continue-card,
body.apple-ui:not(.is-guest-home) .dashboard-today-card,
body.apple-ui:not(.is-guest-home) .dashboard-growth-card,
body.apple-ui:not(.is-guest-home) .dashboard-outcomes-card,
body.apple-ui:not(.is-guest-home) .dashboard-month-card,
body.apple-ui:not(.is-guest-home) .dashboard-review-card,
body.apple-ui:not(.is-guest-home) .dashboard-recent-card,
body.apple-ui:not(.is-guest-home) .dashboard-error-card {
    border: 1px solid var(--apple-line-soft);
    border-radius: var(--apple-radius-lg);
    background: var(--apple-card-solid);
    box-shadow: var(--apple-shadow-soft);
}

body.apple-ui:not(.is-guest-home) .dashboard-continue-card,
body.apple-ui:not(.is-guest-home) .dashboard-today-card,
body.apple-ui:not(.is-guest-home) .dashboard-growth-card,
body.apple-ui:not(.is-guest-home) .dashboard-outcomes-card,
body.apple-ui:not(.is-guest-home) .dashboard-month-card,
body.apple-ui:not(.is-guest-home) .dashboard-review-card,
body.apple-ui:not(.is-guest-home) .dashboard-recent-card,
body.apple-ui:not(.is-guest-home) .dashboard-error-card {
    padding: 28px;
}

body.apple-ui:not(.is-guest-home) .dashboard-today-card {
    background: #1d1d1f !important;
    color: #fff;
}

body.apple-ui:not(.is-guest-home) .dashboard-continue-card h2,
body.apple-ui:not(.is-guest-home) .dashboard-card h2 {
    color: var(--apple-text);
    letter-spacing: 0;
}

body.apple-ui:not(.is-guest-home) .dashboard-today-card h2,
body.apple-ui:not(.is-guest-home) .dashboard-today-card .dashboard-plan-item strong {
    color: #fff;
}

body.apple-ui:not(.is-guest-home) .dashboard-step {
    background: rgba(29, 29, 31, 0.05);
    color: #3f3f46;
}

body.apple-ui:not(.is-guest-home) .dashboard-step.is-done {
    background: rgba(52, 199, 89, 0.12);
    color: #248a3d;
}

body.apple-ui:not(.is-guest-home) .dashboard-progress-bar,
body.apple-ui .course-progress-track {
    height: 9px;
    border-radius: 999px;
    background: rgba(29, 29, 31, 0.08);
    overflow: hidden;
}

body.apple-ui:not(.is-guest-home) .dashboard-progress-bar span,
body.apple-ui .course-progress-track span {
    display: block;
    width: 0;
    height: 100%;
    border-radius: inherit;
    background: var(--apple-blue);
    transition: width 0.32s var(--apple-ease);
}

body.apple-ui:not(.is-guest-home) .dashboard-recent-card {
    grid-column: 1 / -1;
}

body.apple-ui:not(.is-guest-home) .dashboard-recent-item,
body.apple-ui:not(.is-guest-home) .dashboard-recent-empty {
    border: 1px solid var(--apple-line-soft);
    border-radius: 24px;
    background: #fbfbfd;
    box-shadow: none;
}

body.apple-ui:not(.is-guest-home) .dashboard-outcome-stat {
    border-radius: 18px;
}

/* Course package */
body.apple-ui .course-grid {
    margin-top: 30px;
    display: grid;
    grid-template-columns: minmax(0, 1fr);
}

body.apple-ui .course-card {
    display: grid;
    grid-template-columns: minmax(300px, 0.92fr) minmax(0, 1.08fr);
    overflow: hidden;
    border: 1px solid var(--apple-line-soft);
    border-radius: var(--apple-radius-xl);
    background: var(--apple-card-solid);
    box-shadow: var(--apple-shadow-card);
    transition:
        transform 0.22s var(--apple-ease),
        box-shadow 0.22s ease;
}

body.apple-ui .course-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 32px 92px rgba(0, 0, 0, 0.1);
}

body.apple-ui .course-cover {
    position: relative;
    min-height: 420px;
    background: linear-gradient(135deg, #eaf3ff 0%, #f6f9ff 100%);
}

body.apple-ui .course-cover img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: contain;
    object-position: center;
}

body.apple-ui .course-info {
    padding: 42px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
}

body.apple-ui .course-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

body.apple-ui .course-tag {
    min-height: 30px;
    padding: 0 11px;
    border-radius: 999px;
    background: rgba(0, 113, 227, 0.1);
    color: #0066cc;
    display: inline-flex;
    align-items: center;
    font-size: 13px;
    font-weight: 650;
}

body.apple-ui .course-tag.is-soft {
    background: rgba(29, 29, 31, 0.055);
    color: #515154;
}

body.apple-ui .course-info h2 {
    margin-top: 18px;
    color: var(--apple-text);
    font-size: 36px;
    line-height: 1.12;
    font-weight: 760;
    letter-spacing: 0;
}

body.apple-ui .course-info p {
    margin-top: 14px;
    color: var(--apple-muted);
    font-size: 16px;
    line-height: 1.75;
}

body.apple-ui .course-progress {
    width: 100%;
    margin-top: 26px;
    padding: 18px;
    border: 1px solid var(--apple-line-soft);
    border-radius: 24px;
    background: #f5f5f7;
}

body.apple-ui .course-progress-copy {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 16px;
}

body.apple-ui .course-progress-copy span {
    color: var(--apple-subtle);
    font-size: 13px;
    font-weight: 650;
}

body.apple-ui .course-progress-copy strong {
    color: var(--apple-text);
    font-size: 17px;
    font-weight: 700;
}

body.apple-ui .course-progress-track {
    margin-top: 12px;
}

body.apple-ui .course-progress p {
    margin: 10px 0 0;
    color: var(--apple-muted);
    font-size: 13px;
    line-height: 1.5;
}

body.apple-ui .course-actions {
    margin-top: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

body.apple-ui .course-link,
body.apple-ui .course-price-link {
    margin: 0;
    min-height: 44px;
    padding: 0 20px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    font-size: 15px;
}

body.apple-ui .course-price-link:hover {
    color: var(--apple-text);
    text-decoration: none;
}

/* Course library detail */
body.apple-ui .lesson-youtube-panel {
    gap: 26px;
    color: var(--apple-text);
}

body.apple-ui .page-panel.active.lesson-youtube-panel {
    display: grid;
}

body.apple-ui .lesson-youtube-panel .hero,
body.apple-ui .lesson-youtube-panel .intro-card,
body.apple-ui .lesson-youtube-panel .feature {
    border: 1px solid var(--apple-line-soft);
    background: var(--apple-card-solid);
    box-shadow: var(--apple-shadow-soft);
}

body.apple-ui .lesson-youtube-panel .hero {
    padding: 66px 36px;
    border-radius: var(--apple-radius-xl);
    text-align: center;
}

body.apple-ui .lesson-youtube-panel .badge {
    margin-bottom: 20px;
    padding: 8px 14px;
    border-radius: 999px;
    background: rgba(0, 113, 227, 0.08);
    color: #0066cc;
    font-size: 13px;
    font-weight: 650;
}

body.apple-ui .lesson-youtube-panel h1 {
    margin: 0 auto 20px;
    max-width: 760px;
    color: var(--apple-text);
    font-size: 58px;
    line-height: 1.04;
    font-weight: 780;
    letter-spacing: 0;
}

body.apple-ui .lesson-youtube-panel .gradient {
    color: var(--apple-blue);
    background: none;
    -webkit-text-fill-color: currentColor;
}

body.apple-ui .lesson-youtube-panel .subtitle {
    max-width: 820px;
    color: var(--apple-muted);
    font-size: 19px;
    line-height: 1.75;
}

body.apple-ui .lesson-youtube-panel .actions {
    margin-top: 30px;
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

body.apple-ui .lesson-youtube-panel .btn {
    min-height: 44px;
    padding: 0 20px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 650;
}

body.apple-ui .lesson-youtube-panel .intro-card {
    max-width: none;
    margin: 0;
    padding: 40px;
    border-radius: var(--apple-radius-lg);
}

body.apple-ui .lesson-youtube-panel .intro-card h2 {
    margin-bottom: 18px;
    color: var(--apple-text);
    font-size: 34px;
    line-height: 1.14;
    font-weight: 760;
    letter-spacing: 0;
}

body.apple-ui .lesson-youtube-panel .intro-card p {
    max-width: 920px;
    color: var(--apple-muted);
    font-size: 16px;
    line-height: 1.9;
}

body.apple-ui .lesson-youtube-panel .features {
    max-width: none;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
}

body.apple-ui .lesson-youtube-panel .feature {
    padding: 24px;
    border-radius: 26px;
}

body.apple-ui .lesson-youtube-panel .feature .icon {
    margin-bottom: 14px;
    font-size: 28px;
}

body.apple-ui .lesson-youtube-panel .feature h3 {
    margin-bottom: 10px;
    color: var(--apple-text);
    font-size: 20px;
    font-weight: 720;
}

body.apple-ui .lesson-youtube-panel .feature p {
    color: var(--apple-muted);
    line-height: 1.7;
    font-size: 15px;
}

body.apple-ui .lesson-youtube-panel .footer {
    padding: 18px 20px 10px;
    color: var(--apple-subtle);
    text-align: center;
}

/* Vocabulary */
body.apple-ui .words-page-head {
    margin-bottom: 24px;
}

body.apple-ui .words-empty {
    padding: 54px 28px 28px;
    border: 1px dashed rgba(29, 29, 31, 0.16);
    border-radius: var(--apple-radius-lg);
    background: var(--apple-card-solid);
    color: var(--apple-muted);
    box-shadow: var(--apple-shadow-soft);
}

body.apple-ui .words-empty-icon {
    width: 58px;
    height: 58px;
    margin-bottom: 18px;
    border: 1px solid var(--apple-line-soft);
    border-radius: 20px;
    background: #f5f5f7;
    color: var(--apple-text);
}

body.apple-ui .words-empty strong {
    color: var(--apple-text);
    font-size: 20px;
    font-weight: 720;
}

body.apple-ui .words-empty p {
    max-width: 560px;
    color: var(--apple-muted);
}

body.apple-ui .words-empty:not([hidden]) + .words-header {
    margin-top: -1px;
    padding: 0 0 26px;
    border: 0;
    border-radius: 0;
    background: transparent;
}

body.apple-ui .words-header {
    margin: 0 0 18px;
    display: flex;
    justify-content: flex-start;
}

body.apple-ui .words-add-btn {
    min-height: 42px;
    padding: 0 16px;
    border: 1px solid var(--apple-line);
    background: rgba(255, 255, 255, 0.78);
    color: var(--apple-blue);
    font-size: 15px;
    box-shadow: none;
}

body.apple-ui .words-add-btn::before {
    width: 20px;
    height: 20px;
    margin-right: 8px;
    background: rgba(0, 113, 227, 0.1);
    color: var(--apple-blue);
}

body.apple-ui .words-empty[hidden] + .words-header .words-add-btn {
    width: auto;
    height: auto;
    border-style: solid;
    border-color: var(--apple-line);
    background: rgba(255, 255, 255, 0.78);
    color: var(--apple-blue);
    font-size: 15px;
    box-shadow: none;
}

body.apple-ui .words-empty[hidden] + .words-header .words-add-btn::before {
    width: 20px;
    height: 20px;
    margin-right: 8px;
    font-size: 15px;
}

body.apple-ui .words-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

body.apple-ui .word-card {
    padding: 24px;
    border: 1px solid var(--apple-line-soft);
    border-radius: var(--apple-radius-lg);
    background: var(--apple-card-solid);
    box-shadow: var(--apple-shadow-soft);
    transition:
        transform 0.2s var(--apple-ease),
        box-shadow 0.2s ease;
}

body.apple-ui .word-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--apple-shadow-card);
}

body.apple-ui .word-card-head {
    margin-bottom: 20px;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 18px;
}

body.apple-ui .word-card h2 {
    color: var(--apple-text);
    font-size: 30px;
    line-height: 1.12;
    font-weight: 760;
    letter-spacing: 0;
    overflow-wrap: anywhere;
}

body.apple-ui .word-summary-zh {
    margin: -8px 0 16px;
    color: #5f6673;
    font-size: 16px;
    line-height: 1.6;
    overflow-wrap: anywhere;
}

body.apple-ui .word-card:has(.word-disclosure[open]) .word-summary-zh {
    display: none;
}

body.apple-ui .word-remove-btn {
    min-height: 36px;
    padding: 0 12px;
    border: 1px solid rgba(255, 59, 48, 0.18);
    border-radius: 999px;
    background: rgba(255, 59, 48, 0.06);
    color: #d70015;
    cursor: pointer;
    flex: 0 0 auto;
    font: inherit;
    font-size: 13px;
    font-weight: 650;
    transition: background 0.18s ease, transform 0.18s var(--apple-ease);
}

body.apple-ui .word-remove-btn:hover {
    background: rgba(255, 59, 48, 0.1);
    transform: translateY(-1px);
}

body.apple-ui .word-card > .word-source {
    color: var(--apple-subtle);
    font-weight: 700;
}

body.apple-ui .word-disclosure {
    display: grid;
    gap: 12px;
}

body.apple-ui .word-disclosure summary {
    width: fit-content;
    padding: 8px 12px;
    border: 1px solid rgba(0, 113, 227, 0.1);
    border-radius: 999px;
    background: rgba(232, 240, 255, 0.72);
    color: var(--apple-blue);
    cursor: pointer;
    list-style: none;
    font-size: 13px;
    font-weight: 760;
    line-height: 1;
}

body.apple-ui .word-disclosure summary::-webkit-details-marker {
    display: none;
}

body.apple-ui .word-disclosure summary::after {
    content: "↓";
    margin-left: 6px;
    font-size: 12px;
}

body.apple-ui .word-disclosure[open] summary::after {
    content: "↑";
}

body.apple-ui .word-more-close,
body.apple-ui .word-disclosure[open] .word-more-open {
    display: none;
}

body.apple-ui .word-disclosure[open] .word-more-close {
    display: inline;
}

body.apple-ui .word-details {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
}

body.apple-ui .word-details div {
    padding: 14px 16px;
    border-radius: 18px;
    background: #f5f5f7;
}

body.apple-ui .word-details dt {
    margin-bottom: 6px;
    color: var(--apple-subtle);
}

body.apple-ui .word-details dd {
    margin: 0;
    color: #3f3f46;
    line-height: 1.68;
    overflow-wrap: anywhere;
}

body.apple-ui .vocab-add-backdrop {
    background: rgba(29, 29, 31, 0.28);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
}

body.apple-ui .vocab-add-dialog {
    width: min(700px, 100%);
    padding: 30px;
    border: 1px solid var(--apple-line-soft);
    border-radius: var(--apple-radius-lg);
    background: rgba(255, 255, 255, 0.96);
    box-shadow: 0 34px 100px rgba(0, 0, 0, 0.18);
}

body.apple-ui .vocab-add-close {
    background: #f5f5f7;
    color: var(--apple-subtle);
}

body.apple-ui .vocab-add-head p {
    color: var(--apple-subtle);
}

body.apple-ui .vocab-add-head h2 {
    color: var(--apple-text);
    font-size: 32px;
    font-weight: 760;
    letter-spacing: 0;
}

body.apple-ui .vocab-add-tabs {
    border-radius: 999px;
    background: #f2f2f7;
}

body.apple-ui .vocab-add-tabs button {
    border-radius: 999px;
    color: var(--apple-muted);
    font-weight: 650;
}

body.apple-ui .vocab-add-tabs button.is-active {
    color: var(--apple-text);
    box-shadow: 0 8px 22px rgba(0, 0, 0, 0.07);
}

body.apple-ui .vocab-add-field span {
    color: #3f3f46;
    font-weight: 650;
}

body.apple-ui .vocab-add-field input,
body.apple-ui .vocab-add-field textarea {
    border: 1px solid var(--apple-line);
    border-radius: 16px;
    background: #fbfbfd;
    color: var(--apple-text);
}

body.apple-ui .vocab-add-field input:focus,
body.apple-ui .vocab-add-field textarea:focus {
    border-color: rgba(0, 113, 227, 0.6);
    box-shadow: 0 0 0 4px rgba(0, 113, 227, 0.12);
}

body.apple-ui .vocab-ai-tools {
    border: 1px solid rgba(0, 113, 227, 0.12);
    border-radius: 20px;
    background: rgba(0, 113, 227, 0.06);
}

body.apple-ui .vocab-ai-upgrade-link {
    color: var(--apple-blue);
}

/* Rank */
body.apple-ui #rank::after {
    content: none;
    display: none;
}

body.apple-ui .page-panel.active#rank {
    display: grid;
    gap: 18px;
}

body.apple-ui .rank-preview-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
}

body.apple-ui .rank-preview-card,
body.apple-ui .rank-empty-state {
    border: 1px solid var(--apple-line-soft);
    border-radius: var(--apple-radius-lg);
    background: var(--apple-card-solid);
    box-shadow: var(--apple-shadow-soft);
}

body.apple-ui .rank-preview-card {
    min-height: 170px;
    padding: 24px;
}

body.apple-ui .rank-preview-card span {
    color: var(--apple-subtle);
    font-size: 13px;
    font-weight: 650;
}

body.apple-ui .rank-preview-card strong {
    display: block;
    margin-top: 28px;
    color: var(--apple-text);
    font-size: 23px;
    line-height: 1.22;
    font-weight: 760;
}

body.apple-ui .rank-preview-card p {
    margin-top: 10px;
    color: var(--apple-muted);
    line-height: 1.65;
}

body.apple-ui .rank-empty-state {
    padding: 26px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
}

body.apple-ui .rank-empty-state strong {
    color: var(--apple-text);
    font-size: 21px;
    line-height: 1.25;
    font-weight: 760;
}

body.apple-ui .rank-empty-state p {
    max-width: 640px;
    margin-top: 8px;
    color: var(--apple-muted);
    line-height: 1.7;
}

body.apple-ui .rank-empty-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

@media (max-width: 1100px) {
    body.apple-ui .page-shell {
        width: min(100% - 36px, 1220px);
        grid-template-columns: 1fr;
        gap: 22px;
    }

    body.apple-ui .resize-handle {
        display: none;
    }

    body.apple-ui .sidebar {
        position: static;
        overflow-x: auto;
    }

    body.apple-ui .side-nav {
        flex-direction: row;
        min-width: max-content;
    }

    body.apple-ui .side-nav-item {
        white-space: nowrap;
    }

    body.apple-ui.is-guest-home .home-marketing .mobile-nav {
        margin: 0 0 14px;
        padding-bottom: 3px;
        display: flex !important;
        gap: 8px;
        overflow-x: auto;
    }

    body.apple-ui.is-guest-home .home-marketing .mobile-nav a {
        flex: 0 0 auto;
        padding: 10px 14px;
        border: 1px solid var(--apple-line);
        border-radius: 999px;
        color: #3f3f46;
        background: rgba(255, 255, 255, 0.78);
        font-size: 13px;
        font-weight: 650;
        text-decoration: none;
    }

    body.apple-ui.is-guest-home .home-marketing .mobile-nav a.active {
        color: #fff;
        background: #1d1d1f;
    }

    body.apple-ui.is-guest-home .home-marketing .stats-strip,
    body.apple-ui .lesson-youtube-panel .features {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    body.apple-ui.is-guest-home .home-marketing .feature-row,
    body.apple-ui.is-guest-home .home-marketing .feature-row-reverse,
    body.apple-ui .course-card,
    body.apple-ui:not(.is-guest-home) .dashboard-hero,
    body.apple-ui:not(.is-guest-home) .dashboard-results-row,
    body.apple-ui:not(.is-guest-home) .dashboard-grid {
        grid-template-columns: 1fr;
    }

    body.apple-ui.is-guest-home .home-marketing .feature-row-reverse .feature-copy {
        order: 0;
    }

    body.apple-ui .course-cover {
        min-height: 0;
        aspect-ratio: 16 / 10;
    }

    body.apple-ui .words-list {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 760px) {
    body.apple-ui .topbar {
        height: auto;
    }

    body.apple-ui .topbar-inner {
        height: auto;
        min-height: 58px;
        padding: 10px 18px;
        gap: 14px;
    }

    body.apple-ui .brand .brand-wordmark {
        font-size: 19px;
    }

    body.apple-ui .brand-logo {
        width: 30px;
        height: 30px;
    }

    body.apple-ui .auth {
        gap: 8px;
    }

    body.apple-ui .auth .btn {
        min-height: 36px;
        padding: 0 14px;
        font-size: 13px;
    }

    body.apple-ui .page-shell,
    body.apple-ui.is-guest-home .page-shell {
        width: min(100% - 28px, 1220px);
        margin-top: 20px;
        padding-bottom: 52px;
    }

    body.apple-ui .course-header h1,
    body.apple-ui .words-page-head h1,
    body.apple-ui .rank-hero h1,
    body.apple-ui.is-guest-home .home-marketing .section-title-center h2,
    body.apple-ui.is-guest-home .home-marketing .trial-section h2 {
        font-size: 38px;
    }

    body.apple-ui .course-header p,
    body.apple-ui .words-page-head p:last-child,
    body.apple-ui .rank-hero p:last-child {
        font-size: 16px;
    }

    body.apple-ui.is-guest-home .home-marketing .hero {
        padding: 34px 0 28px;
    }

    body.apple-ui.is-guest-home .home-marketing .hero h1 {
        font-size: 42px;
    }

    body.apple-ui.is-guest-home .home-marketing .hero-subtitle {
        font-size: 17px;
    }

    body.apple-ui.is-guest-home .home-marketing .hero-actions,
    body.apple-ui .lesson-youtube-panel .actions,
    body.apple-ui .course-actions,
    body.apple-ui .rank-empty-actions {
        display: grid;
        grid-template-columns: 1fr;
        width: 100%;
    }

    body.apple-ui.is-guest-home .home-marketing .btn,
    body.apple-ui .lesson-youtube-panel .btn,
    body.apple-ui .course-link,
    body.apple-ui .course-price-link,
    body.apple-ui .rank-empty-actions .dashboard-secondary-link {
        width: 100%;
    }

    body.apple-ui.is-guest-home .home-marketing .demo-stage {
        padding: 10px;
        border-radius: 28px;
    }

    body.apple-ui.is-guest-home .home-marketing .learning-preview {
        padding: 16px;
        border-radius: 22px;
    }

    body.apple-ui.is-guest-home .home-marketing .preview-panel-top,
    body.apple-ui.is-guest-home .home-marketing .preview-main,
    body.apple-ui.is-guest-home .home-marketing .preview-step-list,
    body.apple-ui.is-guest-home .home-marketing .stats-strip,
    body.apple-ui.is-guest-home .home-marketing .learning-flow,
    body.apple-ui .lesson-youtube-panel .features,
    body.apple-ui .rank-preview-grid {
        grid-template-columns: 1fr;
    }

    body.apple-ui.is-guest-home .home-marketing .preview-status {
        justify-self: start;
    }

    body.apple-ui.is-guest-home .home-marketing .feature-row {
        min-height: 0;
        padding: 22px;
        border-radius: 26px;
    }

    body.apple-ui.is-guest-home .home-marketing .feature-copy h3 {
        font-size: 25px;
    }

    body.apple-ui.is-guest-home .home-marketing .feature-media img {
        max-height: none;
    }

    body.apple-ui.is-guest-home .home-marketing .flow-step {
        min-height: 0;
        grid-template-columns: auto 1fr;
        grid-template-rows: auto auto;
        column-gap: 15px;
        padding: 18px;
    }

    body.apple-ui.is-guest-home .home-marketing .flow-node {
        grid-row: 1 / span 2;
    }

    body.apple-ui.is-guest-home .home-marketing .flow-icon {
        width: 42px;
        height: 42px;
        margin: 0 0 8px;
    }

    body.apple-ui .course-info,
    body.apple-ui .lesson-youtube-panel .intro-card {
        padding: 24px;
    }

    body.apple-ui .course-info h2,
    body.apple-ui .lesson-youtube-panel h1 {
        font-size: 36px;
    }

    body.apple-ui .course-progress-copy {
        align-items: flex-start;
        flex-direction: column;
        gap: 6px;
    }

    body.apple-ui .rank-empty-state {
        align-items: stretch;
        flex-direction: column;
    }

    body.apple-ui .word-card-head {
        align-items: flex-start;
        flex-direction: row;
        gap: 12px;
        margin-bottom: 12px;
    }

    body.apple-ui .word-remove-btn {
        width: auto;
        min-height: 32px;
        padding: 0 10px;
        font-size: 12px;
    }

    body.apple-ui .word-card {
        padding: 18px;
    }

    body.apple-ui .word-card h2 {
        font-size: 24px;
    }

    body.apple-ui .word-summary-zh {
        margin: -2px 0 12px;
        font-size: 15.5px;
        line-height: 1.55;
    }

    body.apple-ui .word-disclosure summary {
        padding: 7px 11px;
        font-size: 12.5px;
    }

    body.apple-ui .word-details div {
        padding: 11px 12px;
        border-radius: 16px;
    }

    body.apple-ui .vocab-add-dialog {
        padding: 22px;
        border-radius: 26px;
    }
}

@media (max-width: 520px) {
    body.apple-ui .topbar-inner {
        padding: 10px 14px;
    }

    body.apple-ui .auth .btn {
        padding: 0 12px;
    }

    body.apple-ui .page-shell,
    body.apple-ui.is-guest-home .page-shell {
        width: min(100% - 24px, 1220px);
    }

    body.apple-ui .sidebar {
        border-radius: 20px;
    }

    body.apple-ui.is-guest-home .home-marketing .hero h1 {
        font-size: 38px;
    }

    body.apple-ui .course-header h1,
    body.apple-ui .words-page-head h1,
    body.apple-ui .rank-hero h1,
    body.apple-ui.is-guest-home .home-marketing .section-title-center h2,
    body.apple-ui.is-guest-home .home-marketing .trial-section h2 {
        font-size: 34px;
    }

    body.apple-ui .course-info h2,
    body.apple-ui .lesson-youtube-panel h1 {
        font-size: 32px;
    }

    body.apple-ui .course-card,
    body.apple-ui .word-card,
    body.apple-ui .words-empty,
    body.apple-ui .rank-preview-card,
    body.apple-ui .rank-empty-state {
        border-radius: 26px;
    }

    body.apple-ui:not(.is-guest-home) .dashboard-outcome-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    body.apple-ui:not(.is-guest-home) .dashboard-recent-list {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 1100px) {
    body.apple-ui:not(.is-guest-home) .page-shell {
        gap: 18px;
    }

    body.apple-ui:not(.is-guest-home) .sidebar {
        position: sticky;
        top: 64px;
        z-index: 10;
        display: flex;
        margin: 0 calc((100vw - 100%) / -2);
        padding: 10px calc((100vw - 100%) / 2) 11px;
        overflow-x: auto;
        border-width: 1px 0;
        border-left: 0;
        border-right: 0;
        border-radius: 0;
        background: rgba(245, 245, 247, 0.84);
        box-shadow: 0 14px 30px rgba(0, 0, 0, 0.055);
        backdrop-filter: saturate(180%) blur(22px);
        -webkit-backdrop-filter: saturate(180%) blur(22px);
        scrollbar-width: none;
    }

    body.apple-ui:not(.is-guest-home) .sidebar::-webkit-scrollbar {
        display: none;
    }

    body.apple-ui:not(.is-guest-home) .app-side-nav {
        gap: 8px;
    }

    body.apple-ui:not(.is-guest-home) .side-nav-item {
        flex: 0 0 auto;
        min-height: 38px;
        margin: 0;
        padding: 0 14px;
        border: 1px solid rgba(29, 29, 31, 0.08);
        border-radius: 999px;
        background: rgba(255, 255, 255, 0.72);
        color: #3a3a3c;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.86);
        font-size: 13px;
        white-space: nowrap;
    }

    body.apple-ui:not(.is-guest-home) .side-nav-item.active {
        border-color: #1d1d1f;
        background: #1d1d1f;
        color: #fff;
        box-shadow: 0 10px 22px rgba(0, 0, 0, 0.16);
    }

    body.apple-ui:not(.is-guest-home) .page-panel {
        scroll-margin-top: 128px;
        transform: none;
    }

    body.apple-ui:not(.is-guest-home) .page-panel.active {
        animation: applePanelFadeIn 0.22s var(--apple-ease) forwards;
    }
}

@media (max-width: 520px) {
    body.apple-ui:not(.is-guest-home) .side-nav-item {
        padding: 0 13px;
    }
}

@media (prefers-reduced-motion: reduce) {
    body.apple-ui *,
    body.apple-ui *::before,
    body.apple-ui *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
        transition-duration: 0.001ms !important;
    }
}