/* ============================================================
 * WPS笔记官网 — Apple 风格设计系统
 * 设计来源：DESIGN.md (alpha / "Apple")
 *
 * 设计原则：
 *   - 单一 Action Blue (#0066cc) 承载所有交互意图，禁止第二 accent
 *   - 仅一种 box-shadow：产品图阴影；UI chrome 一律 flat
 *   - 大字号 SF Pro Display + negative letter-spacing，body 17/400
 *   - 全幅 tile 交替（白 / parchment / 深）作为分隔，无装饰边框
 * ============================================================ */

/* ── 设计令牌 ──────────────────────────────────────────────── */

:root {
    /* 主交互用黑色 pill；蓝色仅作二级 accent（编号、内文链接） */
    --color-primary: #1d1d1f;
    --color-primary-focus: #1d1d1f;
    --color-primary-on-dark: #2997ff;
    --color-accent: #0066cc;             /* 二级强调：内文链接、编号、eyebrow */
    --color-accent-on-dark: #2997ff;

    --color-ink: #1d1d1f;
    --color-ink-muted-80: #333333;
    --color-ink-muted-48: #7a7a7a;
    --color-body-muted: #cccccc;

    --color-canvas: #ffffff;
    --color-canvas-parchment: #f5f5f7;
    --color-surface-pearl: #fafafc;
    --color-surface-tile-1: #272729;
    --color-surface-tile-2: #2a2a2c;
    --color-surface-tile-3: #252527;
    --color-surface-black: #000000;
    --color-surface-chip-translucent: rgba(210, 210, 215, 0.64);

    --color-on-primary: #ffffff;
    --color-on-dark: #ffffff;

    --color-divider-soft: rgba(0, 0, 0, 0.04);
    --color-hairline: #e0e0e0;
    --color-hairline-on-dark: rgba(255, 255, 255, 0.08);

    /* 字体 — system stack 在 Apple 设备上直接命中 SF Pro，其他平台回退 Inter / system-ui */
    --font-display: "SF Pro Display", "PingFang SC", system-ui, -apple-system,
        BlinkMacSystemFont, "Segoe UI", "Inter", "Helvetica Neue", sans-serif;
    --font-text: "SF Pro Text", "PingFang SC", system-ui, -apple-system,
        BlinkMacSystemFont, "Segoe UI", "Inter", "Helvetica Neue", sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Monaco, Consolas, monospace;

    /* 间距 */
    --space-xxs: 4px;
    --space-xs: 8px;
    --space-sm: 12px;
    --space-md: 17px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-xxl: 48px;
    --space-section: 80px;

    /* 圆角 */
    --radius-xs: 5px;
    --radius-sm: 8px;
    --radius-md: 11px;
    --radius-lg: 18px;
    --radius-pill: 9999px;

    /* 唯一一组阴影 — 仅供产品图使用 */
    --shadow-product: rgba(0, 0, 0, 0.22) 3px 5px 30px 0;

    /* 系统级 active scale — 全站按钮统一 */
    --press-transform: scale(0.96);

    /* 布局 */
    --max-content: 980px;
    --max-content-wide: 1200px;
    --nav-height: 64px;
}

/* ── 基础 ──────────────────────────────────────────────────── */

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    -webkit-text-size-adjust: 100%;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    /* 始终预留滚动条空间，避免内容加载前后页面宽度跳变 */
    scrollbar-gutter: stable;
    overflow-y: scroll;
}

body {
    font-family: var(--font-text);
    font-size: 17px;
    font-weight: 400;
    line-height: 1.47;
    letter-spacing: -0.374px;
    color: var(--color-ink);
    min-height: 100svh;
    background: linear-gradient(180deg, #f4f7fe 0%, #ffffff 100%);
    background-attachment: fixed;
}

img {
    display: block;
    max-width: 100%;
    height: auto;
}

a {
    color: var(--color-accent);
    text-decoration: none;
}

button {
    font: inherit;
    color: inherit;
    background: none;
    border: none;
    cursor: pointer;
}

::selection {
    background: rgba(29, 29, 31, 0.22);
}

/* ── 页面容器 ─────────────────────────────────────────────── */

.page {
    display: flex;
    flex-direction: column;
    min-height: 100svh;
}

/* 二级页面（教程详情等）继续走限宽布局；首页则 edge-to-edge tile 流 */
.page--narrow,
.page--article {
    max-width: var(--max-content);
    margin: 0 auto;
    padding: calc(var(--nav-height) + var(--space-xxl)) var(--space-xl) var(--space-xxl);
    gap: var(--space-xl);
}

.page--home {
    padding-top: 0;
}

body[data-page="legal-detail"] .page--article {
    max-width: 1360px;
}

@media (max-width: 833px) {
    .page--narrow,
    .page--article {
        padding-left: var(--space-lg);
        padding-right: var(--space-lg);
    }
}

@media (max-width: 640px) {
    .page--narrow,
    .page--article {
        padding-left: var(--space-md);
        padding-right: var(--space-md);
        padding-top: calc(var(--nav-height) + var(--space-xl));
    }
}

/* ── 排版令牌 ─────────────────────────────────────────────── */

.t-hero-display {
    font-family: var(--font-display);
    font-size: 56px;
    font-weight: 600;
    line-height: 1.07;
    letter-spacing: -0.28px;
}

.t-display-lg {
    font-family: var(--font-display);
    font-size: 40px;
    font-weight: 600;
    line-height: 1.1;
    letter-spacing: 0;
}

.t-lead {
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 400;
    line-height: 1.3;
    letter-spacing: 0;
}

.t-tagline {
    font-family: var(--font-display);
    font-size: 21px;
    font-weight: 600;
    line-height: 1.19;
    letter-spacing: 0.231px;
}

/* ── 进场动画 ─────────────────────────────────────────────── */

.hero,
.nav-cards,
.content-area,
.back-nav,
.tut-header,
.article-card,
.tut-card,
.cl-page-card,
.download-hero,
.product-header,
.feature-row {
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.7s cubic-bezier(0.2, 0.8, 0.2, 1),
        transform 0.7s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.hero.is-visible,
.nav-cards.is-visible,
.content-area.is-visible,
.back-nav.is-visible,
.tut-header.is-visible,
.article-card.is-visible,
.tut-card.is-visible,
.cl-page-card.is-visible,
.download-hero.is-visible,
.product-header.is-visible,
.feature-row.is-visible {
    opacity: 1;
    transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0s !important;
        transition-duration: 0s !important;
    }
}

/* ── Site Nav (白色 + 当前页下划线) ─────────────────────── */

.site-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    height: var(--nav-height);
    background: transparent;
    color: var(--color-ink);
}

/* 滚动后，给 nav 加一层与背景同色的薄雾，避免与 tile 边界冲突；
   通过 backdrop-filter 透出下方内容色调，自动贴合各 tile */
.site-nav.is-scrolled {
    background: rgba(255, 255, 255, 0.72);
    -webkit-backdrop-filter: saturate(180%) blur(18px);
    backdrop-filter: saturate(180%) blur(18px);
    border-bottom: 1px solid var(--color-divider-soft);
}

.site-nav-inner {
    height: 100%;
    max-width: var(--max-content-wide);
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: flex;
    align-items: center;
    gap: 48px;
}

.site-nav-brand {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--color-ink);
    text-decoration: none;
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 600;
    line-height: 1;
    letter-spacing: 0;
}

.site-nav-brand-mark {
    height: 28px;
    width: auto;
}

.site-nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
    list-style: none;
    font-family: var(--font-text);
    font-size: 16px;
    line-height: 1;
    letter-spacing: 0;
}

.site-nav-link {
    position: relative;
    display: inline-flex;
    align-items: center;
    height: var(--nav-height);
    color: var(--color-ink-muted-48);
    text-decoration: none;
    transition: color 0.18s ease;
}

.site-nav-link:hover {
    color: var(--color-ink);
}

/* 当前页：黑色 + 下划线指示 */
.site-nav[data-nav-page="home"] .site-nav-link[data-nav-key="home"],
.site-nav[data-nav-page="download"] .site-nav-link[data-nav-key="download"],
.site-nav[data-nav-page="tutorial"] .site-nav-link[data-nav-key="tutorial"],
.site-nav[data-nav-page="changelog"] .site-nav-link[data-nav-key="changelog"] {
    color: var(--color-ink);
    font-weight: 600;
}

.site-nav[data-nav-page="home"] .site-nav-link[data-nav-key="home"]::after,
.site-nav[data-nav-page="download"] .site-nav-link[data-nav-key="download"]::after,
.site-nav[data-nav-page="tutorial"] .site-nav-link[data-nav-key="tutorial"]::after,
.site-nav[data-nav-page="changelog"] .site-nav-link[data-nav-key="changelog"]::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 14px;
    height: 2px;
    background: var(--color-ink);
    border-radius: var(--radius-pill);
}

@media (max-width: 640px) {
    .site-nav-inner {
        padding: 0 var(--space-md);
        gap: var(--space-lg);
    }
    .site-nav-links {
        gap: var(--space-lg);
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    .site-nav-inner {
        padding: 0 var(--space-sm);
        gap: var(--space-sm);
    }
    .site-nav-brand-title {
        display: none;
    }
    .site-nav-links {
        gap: var(--space-sm);
        font-size: 13px;
    }
}

/* ── Tile 系统 (full-bleed sections) ─────────────────────── */

.tile {
    width: 100%;
    padding: var(--space-section) var(--space-lg);
    color: var(--color-ink);
    background: transparent;
}

.tile--parchment,
.tile--dark,
.tile--dark-2,
.tile--dark-3 {
    background: transparent;
    color: var(--color-ink);
}

.tile--compact {
    padding-top: var(--space-xxl);
    padding-bottom: var(--space-xxl);
}

.tile-inner {
    max-width: var(--max-content);
    margin: 0 auto;
    width: 100%;
}

.tile-inner--wide {
    max-width: var(--max-content-wide);
}

#downloads,
#product {
    scroll-margin-top: calc(var(--nav-height) + var(--space-lg));
}

.tile-eyebrow {
    display: block;
    margin-bottom: var(--space-sm);
    font-family: var(--font-text);
    font-size: 14px;
    font-weight: 600;
    line-height: 1.29;
    letter-spacing: -0.224px;
    color: var(--color-accent);
}

.tile--dark .tile-eyebrow {
    color: var(--color-accent-on-dark);
}

.tile-headline {
    font-family: var(--font-display);
    font-size: 40px;
    font-weight: 600;
    line-height: 1.1;
    letter-spacing: 0;
    color: inherit;
}

.tile-headline--hero {
    font-size: 56px;
    line-height: 1.07;
    letter-spacing: -0.28px;
}

.tile-subhead {
    margin-top: var(--space-md);
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 400;
    line-height: 1.3;
    letter-spacing: 0;
    color: inherit;
}

.tile--dark .tile-subhead {
    color: var(--color-body-muted);
}

.tile-actions {
    margin-top: var(--space-xl);
    display: inline-flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
}

@media (max-width: 1068px) {
    .tile-headline--hero {
        font-size: 40px;
        letter-spacing: -0.2px;
    }
}

@media (max-width: 640px) {
    .tile {
        padding: var(--space-xxl) var(--space-md);
    }
    .tile-headline {
        font-size: 28px;
    }
    .tile-headline--hero {
        font-size: 34px;
        line-height: 1.1;
    }
    .tile-subhead {
        font-size: 19px;
    }
}

@media (max-width: 419px) {
    .tile-headline--hero {
        font-size: 28px;
    }
}

/* ── Section header (tile 内的小标题块) ─────────────────── */

.section-header {
    text-align: center;
    margin-bottom: var(--space-xxl);
}

.section-eyebrow {
    display: block;
    margin-bottom: var(--space-sm);
    font-family: var(--font-text);
    font-size: 14px;
    font-weight: 600;
    line-height: 1.29;
    letter-spacing: -0.224px;
    color: var(--color-accent);
    text-transform: uppercase;
}

.section-title {
    margin-bottom: 24px;
    font-family: var(--font-display);
    font-size: 42px;
    font-weight: 600;
    line-height: 1.2;
    color: rgba(13, 13, 13, 0.9);
}

.section-desc {
    max-width: 700px;
    margin: 0 auto 64px;
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 400;
    line-height: 1.6;
    color: rgba(13, 13, 13, 0.66);
}

@media (max-width: 640px) {
    .section-header {
        margin-bottom: var(--space-xl);
    }
    .section-title {
        font-size: 30px;
        margin-bottom: 16px;
    }
    .section-desc {
        font-size: 16px;
        margin-bottom: 40px;
    }
}

/* ── 按钮系统 ─────────────────────────────────────────────── */

.btn-primary,
.btn-secondary,
.btn-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    min-height: 44px;
    padding: 11px 22px;
    font-family: var(--font-text);
    font-size: 17px;
    font-weight: 400;
    line-height: 1.24;
    letter-spacing: -0.374px;
    text-decoration: none;
    white-space: nowrap;
    border-radius: var(--radius-pill);
    border: 1px solid transparent;
    transition: transform 0.12s ease, background-color 0.18s ease, color 0.18s ease,
        border-color 0.18s ease;
    cursor: pointer;
}

.btn-primary svg,
.btn-secondary svg,
.btn-ghost svg {
    width: 14px;
    height: 14px;
    flex: 0 0 14px;
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-on-primary);
}

.btn-primary:hover {
    background: #000;
}

.btn-primary:active {
    transform: var(--press-transform);
}

.btn-primary:focus-visible {
    outline: 2px solid var(--color-ink);
    outline-offset: 2px;
}

.btn-secondary {
    background: var(--color-canvas);
    color: var(--color-ink);
    border-color: var(--color-hairline);
}

.btn-secondary:hover {
    border-color: var(--color-ink);
}

.btn-secondary:active {
    transform: var(--press-transform);
}

.tile--dark .btn-secondary {
    background: transparent;
    color: var(--color-on-dark);
    border-color: rgba(255, 255, 255, 0.32);
}

.tile--dark .btn-secondary:hover {
    border-color: var(--color-on-dark);
}

.btn-ghost {
    background: var(--color-surface-pearl);
    color: var(--color-ink-muted-80);
    border-color: var(--color-divider-soft);
}

.btn-ghost:hover {
    background: #f0f0f4;
}

.btn-ghost:active {
    transform: var(--press-transform);
}

/* 禁用态 — 沿用 site.js 写入的 btn-disabled */
.btn-primary.btn-disabled,
.btn-disabled {
    background: var(--color-canvas-parchment);
    color: var(--color-ink-muted-48);
    cursor: not-allowed;
    pointer-events: none;
    border-color: transparent;
}

.tile--dark .btn-disabled {
    background: rgba(255, 255, 255, 0.06);
    color: rgba(255, 255, 255, 0.38);
}

/* 暗底文字链 */
.tile--dark a:not(.btn-primary):not(.btn-secondary):not(.btn-ghost):not(.tut-card) {
    color: var(--color-accent-on-dark);
}

/* ── Brand chip (顶部 logo + 标题) ───────────────────────── */

.brand-chip {
    display: inline-flex;
    align-items: center;
    gap: var(--space-md);
}

.brand-chip-mark {
    width: 44px;
    height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background: var(--color-canvas);
}

.brand-chip-logo {
    height: 28px;
    width: auto;
}

.brand-chip-title {
    font-family: var(--font-display);
    font-size: 21px;
    font-weight: 600;
    line-height: 1.19;
    letter-spacing: 0.231px;
    color: var(--color-ink);
}

/* ── 返回导航 ─────────────────────────────────────────────── */

.back-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xxs);
    color: var(--color-accent);
    font-size: 17px;
    line-height: 1.24;
    letter-spacing: -0.374px;
    text-decoration: none;
}

.back-link:hover {
    text-decoration: underline;
    text-underline-offset: 3px;
}

.back-link svg {
    width: 14px;
    height: 14px;
    flex: 0 0 14px;
}

/* ── Hero ────────────────────────────────────────────────── */

.hero {
    position: relative;
    text-align: center;
    min-height: calc(100svh - 24px);
    padding: calc(var(--nav-height) + 56px) 24px 96px;
    background: transparent;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.hero-content {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 32px;
}

.hero-title-group {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero-logo {
    width: 102px;
    height: 102px;
    margin-bottom: 34px;
}

.hero-title {
    margin-bottom: 18px;
    font-family: var(--font-display);
    font-size: 56px;
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: 0;
    color: var(--color-ink);
}

.hero-subtitle {
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 400;
    letter-spacing: 0;
    color: var(--color-ink);
}

.hero-actions {
    margin-top: 8px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-actions .btn-primary,
.hero-actions .btn-secondary {
    min-width: 204px;
    min-height: 58px;
    padding: 14px 34px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: 0;
}

.hero-actions .btn-primary {
    background: #0d0d0d;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.22);
}

.hero-actions .btn-primary:hover {
    background: #1a1a1a;
}

.hero-actions .btn-secondary {
    background: #ffffff;
    border-color: transparent;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.hero-actions .btn-secondary:hover {
    border-color: transparent;
    background: #ffffff;
}

/* 子页面 hero / brand-chip 残留样式 */
.hero-eyebrow {
    display: block;
    margin-bottom: var(--space-sm);
    font-family: var(--font-text);
    font-size: 14px;
    font-weight: 600;
    line-height: 1.29;
    letter-spacing: -0.224px;
    color: var(--color-accent);
    text-transform: uppercase;
}

.hero-desc {
    margin: var(--space-md) auto 0;
    max-width: 36em;
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 400;
    line-height: 1.3;
    color: var(--color-ink-muted-80);
}

.hero-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    margin-bottom: var(--space-lg);
    border-radius: var(--radius-lg);
    background: var(--color-canvas);
}

@media (max-width: 1068px) {
    .hero-title {
        font-size: 44px;
    }
}

@media (max-width: 640px) {
    .hero {
        min-height: calc(100svh - 16px);
        padding: calc(var(--nav-height) + 40px) 16px 72px;
    }
    .hero-logo {
        width: 88px;
        height: 88px;
        margin-bottom: 28px;
    }
    .hero-title {
        font-size: 40px;
        line-height: 1.15;
    }
    .hero-subtitle {
        font-size: 20px;
    }
    .hero-actions {
        margin-top: 0;
        width: 100%;
        max-width: 320px;
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }
    .hero-actions .btn-primary,
    .hero-actions .btn-secondary {
        width: 100%;
        min-width: 0;
        min-height: 52px;
    }
    .hero-mark {
        width: 64px;
        height: 64px;
    }
    .hero-desc {
        font-size: 19px;
    }
}

/* ── nav-cards (下载 / 教程切换) ─────────────────────────── */

.nav-cards {
    max-width: var(--max-content);
    margin: 0 auto var(--space-xl);
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.nav-card {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: var(--color-canvas);
    border: 1px solid var(--color-hairline);
    border-radius: var(--radius-lg);
    text-align: left;
    cursor: pointer;
    transition: border-color 0.18s ease, transform 0.12s ease;
}

.nav-card:hover {
    border-color: var(--color-ink);
}

.nav-card:active {
    transform: var(--press-transform);
}

.nav-card.is-active {
    border-color: var(--color-ink);
}

.nav-card-icon {
    flex: 0 0 36px;
    width: 36px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    background: var(--color-canvas-parchment);
    color: var(--color-ink);
}

.nav-card.is-active .nav-card-icon {
    background: var(--color-ink);
    color: var(--color-on-dark);
}

.nav-card-icon svg {
    width: 20px;
    height: 20px;
}

.nav-card-title {
    display: block;
    font-family: var(--font-text);
    font-size: 17px;
    font-weight: 600;
    line-height: 1.24;
    letter-spacing: -0.374px;
    color: var(--color-ink);
}

.nav-card-desc {
    display: block;
    margin-top: 2px;
    font-family: var(--font-text);
    font-size: 14px;
    line-height: 1.43;
    letter-spacing: -0.224px;
    color: var(--color-ink-muted-48);
}

@media (max-width: 640px) {
    .nav-cards {
        grid-template-columns: 1fr;
        gap: var(--space-sm);
        padding: 0 var(--space-md);
    }
}

/* ── content area + panels ───────────────────────────────── */

.content-area {
    max-width: var(--max-content);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.panel {
    display: none;
}

.panel.is-active {
    display: block;
}

/* 重置遗留的 .card 容器 — Apple 风用 tile，不需要内嵌卡片 */
.card {
    background: transparent;
    border: none;
    padding: 0;
}

/* ── 平台 tabs ───────────────────────────────────────────── */

.platform-tabs {
    display: flex;
    justify-content: center;
    gap: var(--space-xl);
    margin: 0 0 var(--space-xl);
    padding: 0;
    list-style: none;
    flex-wrap: wrap;
}

.platform-tab {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 10px 0;
    border: none;
    border-bottom: 2px solid transparent;
    border-radius: 0;
    background: transparent;
    color: var(--color-ink-muted-48);
    font-family: var(--font-text);
    font-size: 17px;
    font-weight: 400;
    line-height: 1.24;
    letter-spacing: -0.374px;
    cursor: pointer;
    transition: color 0.18s ease, border-color 0.18s ease;
}

.platform-tab:hover {
    color: var(--color-ink);
}

.platform-tab.is-active {
    color: var(--color-ink);
    border-bottom-color: var(--color-ink);
    font-weight: 600;
}

.platform-tab-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    flex: 0 0 22px;
}

/* 所有 platform icon 视觉重量校准 —— 都画在 viewBox 24x24 的内含 18x18 box 内 */
.platform-icon--windows,
.platform-icon--mac,
.platform-icon--ios,
.platform-icon--android {
    width: 20px;
    height: 20px;
    display: block;
}

.platform-panel {
    display: none;
}

.platform-panel.is-active {
    display: block;
}

/* 窄屏单行放不下 4 个 tab，改 2×2 网格避免 3+1 不均衡换行 */
@media (max-width: 640px) {
    .platform-tabs {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: var(--space-xs) var(--space-sm);
        justify-items: center;
    }
    .platform-tab {
        padding: 8px var(--space-sm);
        font-size: 15px;
    }
}

/* ── 下载二维码悬浮 ──────────────────────────────────────── */

.qr-pop {
    position: fixed;
    z-index: 150;
    transform: translate(-50%, calc(-100% - 14px));
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.16s ease, transform 0.16s ease;
}

.qr-pop.is-visible {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, calc(-100% - 10px));
}

.qr-pop-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 12px;
    background: #fff;
    border-radius: var(--radius-md);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.16);
}

.qr-pop-card svg {
    display: block;
    width: 132px;
    height: 132px;
}

.qr-pop-cap {
    font-family: var(--font-text);
    font-size: 13px;
    color: var(--color-ink-muted-48);
}

/* 指向按钮的小箭头 */
.qr-pop::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: -5px;
    width: 12px;
    height: 12px;
    background: #fff;
    transform: translateX(-50%) rotate(45deg);
    border-radius: 0 0 3px 0;
}

/* ── download row ────────────────────────────────────────── */

.download-row {
    display: flex;
    flex-direction: row-reverse;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-lg);
    padding: var(--space-md) 0;
    min-height: 64px;
}

.download-info p {
    font-family: var(--font-text);
    font-size: 17px;
    font-weight: 400;
    line-height: 1.47;
    letter-spacing: -0.374px;
    color: var(--color-ink-muted-80);
}

.download-actions-buttons {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
    justify-content: flex-end;
}

.mac-help {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xxs);
    margin-top: var(--space-sm);
    color: var(--color-accent);
    font-size: 14px;
    line-height: 1.43;
    letter-spacing: -0.224px;
    text-decoration: none;
}

.mac-help:hover {
    text-decoration: underline;
    text-underline-offset: 3px;
}

.mac-help svg {
    width: 14px;
    height: 14px;
    flex: 0 0 14px;
}

@media (max-width: 640px) {
    .download-row {
        flex-direction: column;
        align-items: stretch;
        gap: var(--space-md);
    }
    .download-actions-buttons {
        justify-content: flex-start;
    }
    .download-row .btn-primary,
    .download-actions-buttons .btn-primary {
        flex: 1 1 auto;
        justify-content: center;
    }
}

/* ── Changelog (首页内嵌) ────────────────────────────────── */

.changelog {
    display: none;
    margin-top: var(--space-xl);
}

.changelog.is-active {
    display: block;
}

.changelog-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.changelog-summary {
    display: flex;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 0 var(--space-xs);
    font-family: var(--font-text);
    font-size: 16px;
    line-height: 1.5;
    letter-spacing: -0.32px;
    color: var(--color-ink-muted-48);
}

.cl-version {
    color: var(--color-ink);
    font-weight: 600;
}

.cl-dot {
    color: var(--color-ink-muted-48);
}

.changelog-empty-copy {
    color: var(--color-ink-muted-48);
}

.changelog-history-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xxs);
    color: var(--color-accent);
    font-family: var(--font-text);
    font-size: 16px;
    line-height: 1.5;
    letter-spacing: -0.32px;
    text-decoration: none;
}

.changelog-history-link:hover {
    text-decoration: underline;
    text-underline-offset: 3px;
}

.changelog-history-link svg {
    width: 12px;
    height: 12px;
    flex: 0 0 12px;
}

.changelog-latest-body {
    margin-top: var(--space-sm);
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-ink-muted-80);
}

.changelog-latest-body:empty {
    display: none;
}

.changelog-latest-body ul {
    list-style: none;
    padding: 0;
}

.changelog-latest-body li {
    position: relative;
    padding-left: var(--space-md);
    line-height: 1.65;
}

.changelog-latest-body li::before {
    content: "";
    position: absolute;
    top: 0.7em;
    left: 0;
    width: 4px;
    height: 4px;
    border-radius: var(--radius-pill);
    background: var(--color-ink-muted-48);
}

/* ── Download page ──────────────────────────────────────── */

.page--download {
    padding-top: 0;
}

.download-hero {
    width: 100%;
    padding: calc(var(--nav-height) + 72px) var(--space-lg) var(--space-xl);
    text-align: center;
}

.download-hero-inner {
    max-width: var(--max-content);
    margin: 0 auto;
}

.download-hero-title {
    font-family: var(--font-display);
    font-size: 48px;
    font-weight: 600;
    line-height: 1.12;
    letter-spacing: 0;
    color: var(--color-ink);
}

.download-hero-desc {
    max-width: 36em;
    margin: var(--space-md) auto 0;
    font-family: var(--font-display);
    font-size: 21px;
    line-height: 1.4;
    letter-spacing: 0;
    color: var(--color-ink-muted-80);
}

@media (max-width: 640px) {
    .download-hero {
        padding: calc(var(--nav-height) + 48px) var(--space-md) var(--space-lg);
    }
    .download-hero-title {
        font-size: 32px;
    }
    .download-hero-desc {
        font-size: 17px;
    }
}

/* ── Product landing showcase ───────────────────────────── */

.product-showcase-section {
    padding-top: var(--space-xxl);
}

.product-header {
    margin-bottom: var(--space-xl);
}

.product-header .section-desc {
    margin-bottom: 0;
}

.feature-showcase {
    display: flex;
    flex-direction: column;
}

.feature-row {
    display: grid;
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    align-items: center;
    gap: 56px;
    padding: 56px 0;
    border-top: 1px solid var(--color-hairline);
}

.feature-row:first-child {
    border-top: none;
}

.feature-row:nth-child(even) {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
}

.feature-row:nth-child(even) .feature-media {
    order: -1;
}

.feature-text {
    min-width: 0;
}

.feature-text h3 {
    margin-bottom: var(--space-md);
    font-family: var(--font-display);
    font-size: 32px;
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: 0;
    color: var(--color-ink);
}

.feature-num {
    display: block;
    margin-bottom: var(--space-sm);
    font-family: var(--font-text);
    font-size: 14px;
    font-weight: 600;
    line-height: 1.29;
    letter-spacing: 0;
    color: var(--color-accent);
}

.feature-text p {
    max-width: 30em;
    font-family: var(--font-text);
    font-size: 17px;
    line-height: 1.7;
    letter-spacing: 0;
    color: var(--color-ink-muted-80);
}

.feature-media {
    position: relative;
    aspect-ratio: 16 / 10;
    min-height: 0;
    overflow: hidden;
    border-radius: var(--radius-sm);
    background: var(--color-surface-pearl);
    box-shadow: var(--shadow-product);
}

.feature-video {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    background: var(--color-surface-pearl);
}

.feature-row.is-active .feature-media {
    outline: 1px solid rgba(0, 102, 204, 0.18);
    outline-offset: 0;
}

@media (max-width: 833px) {
    .feature-row,
    .feature-row:nth-child(even) {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
        padding: 40px 0;
    }
    .feature-row:nth-child(even) .feature-media {
        order: 0;
    }
    .feature-text h3 {
        font-size: 28px;
    }
    .feature-text p {
        max-width: none;
    }
}

@media (max-width: 640px) {
    .product-showcase-section {
        padding-top: var(--space-xl);
    }
    .feature-row {
        padding: 32px 0;
    }
    .feature-text h3 {
        font-size: 24px;
    }
    .feature-text p {
        font-size: 15px;
    }
    .feature-media {
        aspect-ratio: 4 / 3;
        box-shadow: rgba(0, 0, 0, 0.18) 2px 4px 20px 0;
    }
}

/* ── Resources section (首页 resource-grid) ─────────────── */

.resource-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-top: 0;
}

.resource-card {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 32px;
    background: #f4f5f7;
    border-radius: 16px;
    color: var(--color-ink);
    text-decoration: none;
    transition: background-color 0.18s ease;
}

.resource-card:hover {
    background: #eef2f6;
}

.resource-card:hover .resource-arrow {
    transform: translateX(4px);
    color: var(--color-accent);
}

.resource-icon {
    flex: 0 0 64px;
    width: 64px;
    height: 64px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--color-canvas);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
}

.resource-text {
    flex: 1;
    min-width: 0;
}

.resource-text h3 {
    margin-bottom: 4px;
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 600;
    line-height: 1.4;
    letter-spacing: -0.18px;
    color: var(--color-ink);
}

.resource-text p {
    font-family: var(--font-text);
    font-size: 14px;
    line-height: 1.55;
    color: var(--color-ink-muted-80);
}

.resource-arrow {
    color: var(--color-ink-muted-48);
    transition: transform 0.3s ease, color 0.18s ease;
}

@media (max-width: 833px) {
    .resource-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .resource-card {
        padding: 24px;
        gap: 16px;
    }
    .resource-icon {
        flex-basis: 52px;
        width: 52px;
        height: 52px;
    }
    .resource-text h3 {
        font-size: 17px;
    }
}

/* ── Tutorial grid ───────────────────────────────────────── */

.tut-header {
    text-align: center;
}

.tut-header h1 {
    font-family: var(--font-display);
    font-size: 56px;
    font-weight: 600;
    line-height: 1.07;
    letter-spacing: -0.28px;
    color: var(--color-ink);
}

.tut-header p {
    margin: var(--space-md) auto 0;
    max-width: 36em;
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 400;
    line-height: 1.3;
    color: var(--color-ink-muted-80);
}

@media (max-width: 1068px) {
    .tut-header h1 {
        font-size: 40px;
    }
}

@media (max-width: 640px) {
    .tut-header h1 {
        font-size: 32px;
    }
    .tut-header p {
        font-size: 19px;
    }
}

.tut-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-lg);
}

.tut-grid--compact {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-md);
}

.tut-card {
    display: flex;
    flex-direction: column;
    padding: var(--space-lg);
    background: var(--color-canvas);
    border: 1px solid var(--color-hairline);
    border-radius: var(--radius-lg);
    color: var(--color-ink);
    text-decoration: none;
    transition: border-color 0.18s ease, transform 0.12s ease;
}

.tut-card:hover {
    border-color: var(--color-ink);
}

.tut-card:active {
    transform: var(--press-transform);
}

.tut-card-num {
    font-family: var(--font-text);
    font-size: 14px;
    font-weight: 600;
    line-height: 1.29;
    letter-spacing: -0.224px;
    color: var(--color-accent);
    margin-bottom: var(--space-sm);
}

.tut-card h3,
.tut-card h4 {
    font-family: var(--font-display);
    font-size: 21px;
    font-weight: 600;
    line-height: 1.19;
    letter-spacing: 0.231px;
    color: var(--color-ink);
    margin-bottom: var(--space-xs);
}

.tut-card p {
    flex: 1;
    font-family: var(--font-text);
    font-size: 14px;
    line-height: 1.43;
    letter-spacing: -0.224px;
    color: var(--color-ink-muted-80);
}

.tut-card-arrow {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xxs);
    margin-top: var(--space-md);
    color: var(--color-accent);
    font-family: var(--font-text);
    font-size: 14px;
    line-height: 1.43;
    letter-spacing: -0.224px;
}

.tut-card-arrow svg {
    width: 12px;
    height: 12px;
    flex: 0 0 12px;
    transition: transform 0.18s ease;
}

.tut-card:hover .tut-card-arrow svg {
    transform: translateX(2px);
}

.tut-more {
    margin-top: var(--space-xl);
    text-align: center;
}

@media (max-width: 833px) {
    .tut-grid--compact {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 640px) {
    .tut-grid,
    .tut-grid--compact {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }
}

/* ── Article (教程详情) ──────────────────────────────────── */

.article-card {
    background: transparent;
}

.article-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: var(--space-md);
    padding-bottom: var(--space-lg);
    margin-bottom: var(--space-xl);
    border-bottom: 1px solid var(--color-hairline);
    flex-wrap: wrap;
}

.article-kicker {
    display: block;
    margin-bottom: var(--space-xs);
    font-family: var(--font-text);
    font-size: 14px;
    font-weight: 600;
    line-height: 1.29;
    letter-spacing: -0.224px;
    color: var(--color-accent);
    text-transform: uppercase;
}

.article-title {
    font-family: var(--font-display);
    font-size: 40px;
    font-weight: 600;
    line-height: 1.1;
    letter-spacing: 0;
    color: var(--color-ink);
}

.article-meta {
    font-family: var(--font-text);
    font-size: 14px;
    line-height: 1.43;
    letter-spacing: -0.224px;
    color: var(--color-ink-muted-48);
}

.article-actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.copy-md-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xxs);
    min-height: 36px;
    padding: 8px 14px;
    background: var(--color-canvas);
    color: var(--color-ink-muted-80);
    border: 1px solid var(--color-hairline);
    border-radius: var(--radius-pill);
    font-family: var(--font-text);
    font-size: 14px;
    line-height: 1.29;
    letter-spacing: -0.224px;
    cursor: pointer;
    transition: border-color 0.18s ease, color 0.18s ease;
}

.copy-md-btn:hover {
    border-color: var(--color-ink);
    color: var(--color-ink);
}

.copy-md-btn:active {
    transform: var(--press-transform);
}

.copy-md-btn.is-copied {
    color: var(--color-accent);
    border-color: var(--color-accent);
}

.copy-md-btn svg {
    width: 12px;
    height: 12px;
    flex: 0 0 12px;
}

@media (max-width: 640px) {
    .article-title {
        font-size: 28px;
    }
    .article-header {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* ── Emergency ───────────────────────────────────────────── */

.emergency-hero {
    text-align: center;
    padding-top: var(--space-section);
}

.emergency-card {
    max-width: var(--max-content);
    margin: var(--space-xl) auto 0;
    padding: var(--space-xl);
    background: var(--color-canvas-parchment);
    border-radius: var(--radius-lg);
}

.emergency-badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    margin-bottom: var(--space-md);
    background: var(--color-canvas);
    color: var(--color-ink-muted-80);
    border-radius: var(--radius-pill);
    font-family: var(--font-text);
    font-size: 12px;
    line-height: 1.4;
    letter-spacing: -0.12px;
}

.emergency-detail {
    font-family: var(--font-text);
    font-size: 17px;
    line-height: 1.47;
    letter-spacing: -0.374px;
    color: var(--color-ink-muted-80);
}

/* ── Changelog 列表页 ────────────────────────────────────── */

.cl-page-card {
    width: 100%;
    max-width: var(--max-content);
    margin: 0 auto;
    padding: 0 var(--space-md);
    text-align: center;
}

.cl-page-card > .cl-page-list,
.cl-page-card > .cl-page-footer {
    text-align: left;
}

.cl-page-tabs {
    display: inline-flex;
    gap: var(--space-xs);
    padding: 4px;
    margin: 0 auto var(--space-xl);
    background: var(--color-canvas-parchment);
    border-radius: var(--radius-pill);
}

.cl-page-tab {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    min-height: 40px;
    padding: 8px var(--space-lg);
    border: none;
    border-radius: var(--radius-pill);
    background: transparent;
    color: var(--color-ink-muted-48);
    font-family: var(--font-text);
    font-size: 14px;
    font-weight: 400;
    line-height: 1;
    letter-spacing: -0.224px;
    cursor: pointer;
    transition: background 0.18s ease, color 0.18s ease;
}

.cl-page-tab:hover {
    color: var(--color-ink);
}

.cl-page-tab.is-active {
    background: var(--color-canvas);
    color: var(--color-ink);
    font-weight: 600;
}

.cl-page-tab svg {
    width: 16px;
    height: 16px;
}

/* 窄屏放不下 4 个带 icon 的胶囊 tab，铺满等分并隐藏 icon */
@media (max-width: 640px) {
    .cl-page-tabs {
        display: flex;
        width: 100%;
    }
    .cl-page-tab {
        flex: 1 1 0;
        padding: 8px 4px;
    }
    .cl-page-tab svg {
        display: none;
    }
}

.cl-page-list {
    display: grid;
    gap: var(--space-md);
    min-height: 320px;
}

.cl-page-loading,
.cl-page-empty {
    padding: var(--space-xl) 0;
    text-align: center;
    color: var(--color-ink-muted-48);
    font-family: var(--font-text);
    font-size: 14px;
    line-height: 1.43;
    letter-spacing: -0.224px;
}

.cl-page-loading-text {
    color: inherit;
}

.cl-page-footer {
    margin-top: var(--space-lg);
    text-align: center;
}

.cl-page-load-more {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xxs);
    min-height: 36px;
    padding: 8px var(--space-lg);
    background: var(--color-canvas);
    color: var(--color-accent);
    border: 1px solid var(--color-accent);
    border-radius: var(--radius-pill);
    font-family: var(--font-text);
    font-size: 14px;
    line-height: 1;
    letter-spacing: -0.224px;
    cursor: pointer;
    transition: background 0.18s ease;
}

.cl-page-load-more:hover {
    background: rgba(0, 102, 204, 0.06);
}

.cl-page-load-more:active {
    transform: var(--press-transform);
}

.cl-page-load-more svg {
    width: 12px;
    height: 12px;
}

.cl-page-load-more:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.changelog-entry {
    padding: var(--space-lg);
    background: var(--color-canvas);
    border: 1px solid var(--color-hairline);
    border-radius: var(--radius-lg);
}

.changelog-entry--latest {
    border-color: var(--color-ink);
}

.changelog-entry-head {
    display: flex;
    align-items: baseline;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
}

.cl-entry-label {
    display: inline-flex;
    align-items: center;
    padding: 2px 10px;
    border-radius: var(--radius-pill);
    background: rgba(0, 102, 204, 0.08);
    color: var(--color-accent);
    font-family: var(--font-text);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: -0.12px;
    line-height: 1.4;
}

.cl-ver-header {
    font-family: var(--font-display);
    font-size: 21px;
    font-weight: 600;
    line-height: 1.19;
    letter-spacing: 0.231px;
    color: var(--color-ink);
}

.cl-date-header {
    margin-left: auto;
    font-family: var(--font-text);
    font-size: 14px;
    line-height: 1.43;
    letter-spacing: -0.224px;
    color: var(--color-ink-muted-48);
}

.changelog-body {
    font-family: var(--font-text);
    font-size: 14px;
    line-height: 1.65;
    letter-spacing: -0.224px;
    color: var(--color-ink-muted-80);
}

.changelog-body ul,
.changelog-body ol {
    list-style: none;
    padding: 0;
}

.changelog-body li {
    position: relative;
    padding-left: var(--space-md);
    margin-top: var(--space-xxs);
}

.changelog-body li::before {
    content: "";
    position: absolute;
    top: 0.65em;
    left: 0;
    width: 4px;
    height: 4px;
    border-radius: var(--radius-pill);
    background: var(--color-ink-muted-48);
}

.changelog-body p + p {
    margin-top: var(--space-xs);
}

/* ── Site footer ─────────────────────────────────────────── */

.site-footer {
    margin-top: auto;
    background: #f5f5f5;
    padding: 48px 24px 36px;
    font-family: var(--font-text);
    font-size: 14px;
    color: var(--color-ink-muted-80);
}

.footer-inner {
    max-width: var(--max-content-wide);
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 0;
}

.footer-top {
    padding-bottom: 28px;
}

.footer-section-title {
    margin-bottom: 16px;
    font-family: var(--font-text);
    font-size: 15px;
    font-weight: 600;
    line-height: 1.4;
    color: var(--color-ink);
}

.footer-report {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-report-row {
    display: flex;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 4px;
    font-size: 13px;
    line-height: 1.6;
}

.footer-report-label {
    color: var(--color-ink-muted-80);
}

.footer-report-value {
    color: var(--color-ink);
    font-weight: 600;
    font-size: 14px;
}

.footer-report-link {
    color: var(--color-accent);
    font-weight: 500;
    text-decoration: none;
}

.footer-report-link:hover {
    text-decoration: underline;
    text-underline-offset: 3px;
}

.footer-col-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 9px 16px;
    border: 1px solid #e5e5e5;
    border-radius: 4px;
    background: #ffffff;
    font-family: var(--font-text);
    font-size: 14px;
    font-weight: 400;
    line-height: 1.4;
    color: rgba(13, 13, 13, 0.66);
    width: fit-content;
    margin-top: 6px;
    transition: background-color 0.2s ease, border-color 0.2s ease;
    cursor: pointer;
}

.footer-col-btn:hover {
    background: #fafafa;
    border-color: #d6d6d6;
}

.footer-col-btn-arrow {
    margin-left: 2px;
    flex: 0 0 12px;
}

.footer-report-dropdown {
    position: relative;
    display: inline-block;
}

.footer-dropdown-menu {
    display: none;
    position: absolute;
    bottom: 100%;
    left: 0;
    margin-bottom: 8px;
    background: #ffffff;
    border: 1px solid var(--color-hairline);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    min-width: 240px;
    z-index: 100;
    padding: 8px 0;
}

.footer-report-dropdown:hover .footer-dropdown-menu,
.footer-report-dropdown:focus-within .footer-dropdown-menu {
    display: block;
}

.footer-dropdown-menu a {
    display: block;
    padding: 8px 16px;
    color: var(--color-ink);
    font-size: 13px;
    text-decoration: none;
    white-space: nowrap;
    transition: background-color 0.18s ease, color 0.18s ease;
}

.footer-dropdown-menu a:hover {
    background: #f5f5f5;
    color: var(--color-accent);
}

.footer-divider {
    height: 1px;
    background: var(--color-hairline);
}

.footer-bottom {
    padding-top: 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-legal-row {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 12px;
    color: var(--color-ink-muted-48);
    line-height: 1.8;
}

.footer-legal-link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--color-ink-muted-80);
    text-decoration: none;
    transition: color 0.18s ease;
}

.footer-legal-link:hover {
    color: var(--color-accent);
}

.footer-legal-link svg {
    flex: 0 0 14px;
}

.footer-legal-sep {
    color: #d6d6d6;
    user-select: none;
}

.footer-legal-text {
    color: var(--color-ink-muted-80);
}

.footer-copyright {
    font-size: 12px;
    color: var(--color-ink-muted-48);
}

@media (max-width: 640px) {
    .site-footer {
        padding: 36px 16px 28px;
    }
    .footer-legal-row {
        gap: 6px 8px;
    }
    .footer-legal-sep {
        display: none;
    }
}