/* === 全局变量 === */
:root {
    --primary: #e88aa8;
    --primary-dark: #c56a89;
    --primary-light: #f8d6e0;
    --primary-soft: #fce8ee;
    --accent: #f4a261;
    --accent-dark: #e08c4e;
    --green: #6cbf84;
    --blue: #6ba8c5;
    --yellow: #f5c842;
    --text: #2a2a2a;
    --text-soft: #5a5a5a;
    --text-light: #8a8a8a;
    --border: #ebe4e8;
    --bg: #fff9fb;
    --bg-card: #ffffff;
    --bg-soft: #fdeef3;
    --white: #ffffff;
    --shadow-sm: 0 2px 8px rgba(232,138,168,0.08);
    --shadow-md: 0 8px 24px rgba(232,138,168,0.12);
    --shadow-lg: 0 16px 40px rgba(232,138,168,0.18);
    --radius: 12px;
    --radius-lg: 16px;
    --max-width: 1000px;
    --safe-bottom: env(safe-area-inset-bottom, 0px);
    --transition: 0.25s ease;
}

/* === Reset === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; overflow-x: hidden; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "微软雅黑", sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.65;
    font-size: 15px;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -webkit-tap-highlight-color: transparent;
}
/* 移动菜单展开时锁定背景滚动 */
body.menu-open { overflow: hidden; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary-dark); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary); }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

/* === Container === */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

/* === 顶部导航 === */
.site-header {
    position: sticky; top: 0; z-index: 100;
    background: rgba(255,255,255,0.96);
    backdrop-filter: saturate(180%) blur(8px);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}
.nav-wrap {
    display: flex; align-items: center; justify-content: space-between;
    gap: 24px; height: 64px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; color: var(--text); font-size: 18px; flex-shrink: 0; }
.brand-logo { width: 32px; height: 32px; border-radius: 8px; }
.nav-menu { display: flex; align-items: center; gap: 24px; flex: 1; justify-content: flex-end; }
.nav-menu ul { display: flex; align-items: center; gap: 22px; }
.nav-menu ul a { color: var(--text-soft); font-size: 14px; font-weight: 500; padding: 6px 0; position: relative; }
.nav-menu ul a:hover { color: var(--primary-dark); }
.nav-menu ul a::after { content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px; background: var(--primary); transition: width var(--transition); }
.nav-menu ul a:hover::after { width: 100%; }
.mobile-menu-toggle { display: none; width: 44px; height: 44px; flex-direction: column; justify-content: center; align-items: center; gap: 5px; }
.mobile-menu-toggle span { display: block; width: 24px; height: 2px; background: var(--text); border-radius: 2px; transition: var(--transition); }
.mobile-menu-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.mobile-menu-toggle.active span:nth-child(2) { opacity: 0; }
.mobile-menu-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* === 按钮 === */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 12px 28px; font-size: 15px; font-weight: 700;
    border-radius: 999px; transition: all var(--transition);
    min-height: 44px; cursor: pointer; text-align: center;
}
.btn-primary, .btn-hero {
    background: var(--primary); color: var(--white);
    box-shadow: 0 6px 16px rgba(232,138,168,0.35);
}
.btn-primary:hover, .btn-hero:hover {
    background: var(--primary-dark); color: var(--white);
    transform: translateY(-2px); box-shadow: 0 10px 24px rgba(232,138,168,0.45);
}
.btn-ghost { background: rgba(255,255,255,0.15); color: var(--white); border: 2px solid rgba(255,255,255,0.6); }
.btn-ghost:hover { background: rgba(255,255,255,0.25); color: var(--white); }
.btn-ghost-light { background: transparent; color: var(--primary-dark); border: 2px solid var(--primary); }
.btn-ghost-light:hover { background: var(--primary-soft); color: var(--primary-dark); }
.nav-download { padding: 8px 22px; font-size: 14px; }

/* === 面包屑 === */
.breadcrumb { display: flex; align-items: center; gap: 8px; padding: 12px 0; font-size: 12px; color: var(--text-light); }
.breadcrumb a { color: var(--text-soft); }
.breadcrumb .sep { color: var(--border); }
.breadcrumb .current { color: var(--primary-dark); font-weight: 600; }

/* === Hero === */
.hero {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    padding: 56px 0 64px;
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: ''; position: absolute; top: -50px; right: -50px;
    width: 280px; height: 280px; border-radius: 50%;
    background: rgba(255,255,255,0.08);
}
.hero::after {
    content: ''; position: absolute; bottom: -60px; left: -60px;
    width: 200px; height: 200px; border-radius: 50%;
    background: rgba(255,255,255,0.06);
}
.hero-inner {
    display: grid; grid-template-columns: 1fr 280px;
    gap: 56px; align-items: center; position: relative; z-index: 1;
}
.hero-tag {
    display: inline-block; padding: 6px 14px; font-size: 11px; font-weight: 700;
    background: rgba(255,255,255,0.2); color: var(--white);
    border-radius: 999px; letter-spacing: 0.5px; margin-bottom: 16px;
}
.hero h1 { font-size: 2.8rem; font-weight: 900; margin-bottom: 14px; letter-spacing: -1px; }
.hero-sub { font-size: 16px; line-height: 1.7; color: rgba(255,255,255,0.95); margin-bottom: 22px; max-width: 480px; }
.hero-rating { display: flex; align-items: center; gap: 12px; margin-bottom: 22px; flex-wrap: wrap; }
.hero-stars { color: var(--yellow); font-size: 20px; letter-spacing: 2px; }
.hero-rating-text { font-size: 14px; color: rgba(255,255,255,0.95); }
.hero-rating-text b { color: var(--white); font-weight: 900; font-size: 16px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 28px; }
.hero-trust { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 18px; }
.hero-trust li { font-size: 13px; color: rgba(255,255,255,0.95); display: flex; align-items: center; gap: 8px; }
.hero-trust li b { color: var(--yellow); font-size: 15px; flex-shrink: 0; }
.hero-trust li b:last-child { color: var(--white); }
.hero-visual { display: flex; justify-content: center; align-items: center; }
.hero-phone {
    width: 100%; max-width: 260px;
    aspect-ratio: 9 / 16;
    object-fit: cover; object-position: top;
    border-radius: 22px;
    box-shadow: 0 24px 56px rgba(0,0,0,0.3), 0 8px 16px rgba(0,0,0,0.2);
    animation: heroFloat 3.2s ease-in-out infinite;
}
@keyframes heroFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-14px); }
}
@media (prefers-reduced-motion: reduce) {
    .hero-phone { animation: none; }
}

/* === 通用 section === */
section { padding: 56px 0; }
.section-head { text-align: center; margin-bottom: 40px; }
.section-eyebrow { display: inline-block; font-size: 11px; font-weight: 800; letter-spacing: 1.5px; color: var(--primary); margin-bottom: 10px; }
.section-head h2 { font-size: 1.85rem; font-weight: 800; color: var(--text); letter-spacing: -0.5px; }
.section-sub { color: var(--text-soft); margin-top: 8px; font-size: 14px; }

/* === 界面预览 === */
.preview { background: var(--bg-card); }
.preview-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.preview-card { text-align: center; }
.preview-card img {
    width: 100%; aspect-ratio: 210/375; object-fit: cover; object-position: top;
    border-radius: 14px; box-shadow: var(--shadow-md);
    border: 1px solid var(--border); transition: transform var(--transition);
}
.preview-card:hover img { transform: translateY(-4px); }
.preview-card figcaption { margin-top: 10px; font-size: 13px; color: var(--text-soft); font-weight: 500; }

/* === 核心功能 === */
.features { background: var(--bg-soft); }
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.feature-card {
    background: var(--bg-card); padding: 28px 24px; border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm); border: 1px solid var(--border);
    transition: all var(--transition);
}
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--primary-light); }
.feature-icon {
    width: 52px; height: 52px; border-radius: 14px;
    background: linear-gradient(135deg, var(--primary-soft), var(--primary-light));
    display: flex; align-items: center; justify-content: center; font-size: 26px;
    margin-bottom: 14px;
}
.feature-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 10px; color: var(--text); }
.feature-card p { font-size: 13.5px; color: var(--text-soft); line-height: 1.7; }

/* === 版本日志 === */
.changelog { background: var(--bg-card); }
.version-list { display: flex; flex-direction: column; gap: 16px; max-width: 760px; margin: 0 auto; }
.version-item {
    display: grid; grid-template-columns: 160px 1fr; gap: 24px;
    padding: 22px 24px; border-radius: var(--radius-lg);
    background: var(--bg-soft); border: 1px solid var(--border);
    transition: all var(--transition);
}
.version-item:hover { border-color: var(--primary-light); box-shadow: var(--shadow-sm); }
.version-current { background: linear-gradient(135deg, var(--primary-soft), #fff); border-color: var(--primary-light); }
.version-num { display: flex; flex-direction: column; gap: 4px; }
.version-tag { display: inline-block; padding: 3px 10px; font-size: 10px; font-weight: 800; background: var(--text-light); color: var(--white); border-radius: 999px; width: fit-content; letter-spacing: 0.5px; }
.version-current .version-tag { background: var(--primary); }
.version-num strong { font-size: 18px; font-weight: 800; color: var(--text); }
.version-num em { font-size: 12px; color: var(--text-soft); font-style: normal; }
.version-body ul { display: flex; flex-direction: column; gap: 6px; margin-bottom: 10px; }
.version-body ul li { font-size: 13px; color: var(--text-soft); padding-left: 16px; position: relative; line-height: 1.7; }
.version-body ul li::before { content: '•'; position: absolute; left: 4px; color: var(--primary); font-weight: 900; }
.version-body time { font-size: 11px; color: var(--text-light); }

/* === 对比 === */
.compare { background: var(--bg-soft); }
.compare-table-wrap { overflow-x: auto; border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); background: var(--white); }
.compare-table { width: 100%; border-collapse: collapse; min-width: 480px; }
.compare-table th, .compare-table td { padding: 14px 16px; text-align: center; font-size: 13.5px; border-bottom: 1px solid var(--border); }
.compare-table th { background: var(--bg-soft); font-weight: 700; color: var(--text); }
.compare-table th.col-highlight, .compare-table td.col-highlight { background: var(--primary-soft); color: var(--primary-dark); font-weight: 700; }
.compare-table td:first-child { text-align: left; font-weight: 600; color: var(--text); }
.compare-table tr:last-child td { border-bottom: none; }

/* === 使用教程 === */
.tutorial { background: var(--bg-card); }
.tutorial-list { display: flex; flex-direction: column; gap: 20px; max-width: 800px; margin: 0 auto; }
.tutorial-step {
    display: grid; grid-template-columns: 56px 1fr; gap: 20px;
    padding: 22px 24px; border-radius: var(--radius-lg);
    background: var(--bg-soft); border: 1px solid var(--border);
}
.step-num {
    width: 48px; height: 48px; border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white); display: flex; align-items: center; justify-content: center;
    font-size: 22px; font-weight: 900; flex-shrink: 0;
}
.step-body h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; color: var(--text); }
.step-body p { font-size: 13.5px; color: var(--text-soft); line-height: 1.75; }
.step-body p strong { color: var(--primary-dark); }

/* === 下载专区 === */
.download {
    background: linear-gradient(135deg, var(--primary-soft), var(--primary-light));
    text-align: center;
}
.download-cta { padding: 48px 24px; }
.download-cta h2 { font-size: 1.85rem; font-weight: 800; color: var(--text); margin-bottom: 8px; }
.download-sub { color: var(--text-soft); margin-bottom: 28px; font-size: 14px; }
.download-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 16px; }
.download-meta { font-size: 12px; color: var(--text-light); }

/* === FAQ === */
.faq { background: var(--bg-card); }
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
    border: 1px solid var(--border); border-radius: var(--radius);
    background: var(--white); overflow: hidden; transition: all var(--transition);
}
.faq-item.active { border-color: var(--primary-light); box-shadow: var(--shadow-sm); }
.faq-question {
    display: flex; align-items: center; gap: 12px;
    padding: 16px 20px; cursor: pointer;
    user-select: none;
}
.faq-question:focus-visible { outline: 2px solid var(--primary); outline-offset: -2px; border-radius: var(--radius); }
.faq-q-num { font-size: 12px; font-weight: 800; color: var(--primary); flex-shrink: 0; min-width: 28px; }
.faq-question h3 { flex: 1; font-size: 15px; font-weight: 600; color: var(--text); line-height: 1.5; }
.faq-toggle { font-size: 22px; color: var(--primary); flex-shrink: 0; transition: transform var(--transition); font-weight: 300; }
.faq-item.active .faq-toggle { transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height var(--transition); }
.faq-item.active .faq-answer { max-height: 600px; }
.faq-answer-inner { padding: 0 20px 18px 60px; font-size: 13.5px; color: var(--text-soft); line-height: 1.75; }
.faq-answer-inner p, .faq-answer-inner ol, .faq-answer-inner ul { margin-bottom: 8px; }
.faq-answer-inner ol { padding-left: 18px; }
.faq-answer-inner ol li { list-style: decimal; margin-bottom: 4px; }

/* === 用户评价 === */
.reviews { background: var(--bg-soft); }
.reviews-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.review-card {
    background: var(--white); padding: 22px 20px; border-radius: var(--radius-lg);
    border: 1px solid var(--border); box-shadow: var(--shadow-sm);
    display: grid; grid-template-columns: 40px 1fr; gap: 14px;
    transition: all var(--transition);
}
.review-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.review-num { font-size: 26px; font-weight: 900; color: var(--primary); line-height: 1; }
.review-text { font-size: 13px; color: var(--text-soft); line-height: 1.7; margin-bottom: 10px; }
.review-meta { font-size: 12px; color: var(--text-light); }
.review-meta strong { color: var(--text); }

/* === 长尾词导航 === */
.keyword-nav { background: var(--bg-card); padding: 48px 0; }
.keyword-group-title { font-size: 14px; font-weight: 700; color: var(--text); margin: 20px 0 12px; padding-left: 12px; border-left: 3px solid var(--primary); }
.keyword-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; margin-bottom: 8px; }
.keyword-grid a {
    display: flex; align-items: center; justify-content: center; text-align: center;
    padding: 12px 8px; font-size: 13px; font-weight: 500; color: var(--text-soft);
    background: var(--bg-soft); border-radius: var(--radius);
    border: 1px solid var(--border); transition: all var(--transition);
    min-height: 48px;
}
.keyword-grid a:hover { background: var(--primary-soft); color: var(--primary-dark); border-color: var(--primary-light); transform: translateY(-2px); }

/* === SEO 长文 === */
.seo-content { background: var(--bg-soft); padding: 48px 0; }
.seo-article { max-width: 760px; margin: 0 auto; font-size: 14px; color: var(--text-soft); line-height: 1.85; }
.seo-article h2 { font-size: 1.6rem; font-weight: 800; color: var(--text); margin-bottom: 16px; }
.seo-article h3 { font-size: 1.15rem; font-weight: 700; color: var(--text); margin: 24px 0 12px; }
.seo-article p { margin-bottom: 14px; }
.seo-article strong { color: var(--primary-dark); font-weight: 600; }
.seo-article ul, .seo-article ol { margin: 12px 0 14px 20px; }
.seo-article ul li, .seo-article ol li { margin-bottom: 6px; list-style: disc; }
.seo-article ol li { list-style: decimal; }

/* === 页脚 === */
.site-footer { background: var(--text); color: rgba(255,255,255,0.7); padding: 48px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 32px; margin-bottom: 32px; }
.footer-logo { border-radius: 12px; margin-bottom: 12px; }
.footer-col h3 { color: var(--white); font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.footer-col h4 { color: var(--white); font-size: 14px; font-weight: 600; margin-bottom: 12px; }
.footer-col p { font-size: 13px; line-height: 1.7; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a { color: rgba(255,255,255,0.7); font-size: 13px; }
.footer-col ul li a:hover { color: var(--primary-light); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 20px; text-align: center; font-size: 12px; }
.footer-bottom p { margin-bottom: 6px; }
.footer-seo a { color: rgba(255,255,255,0.5); }
.footer-seo a:hover { color: var(--primary-light); }

/* === 浮动按钮 === */
.btn-float {
    position: fixed; bottom: calc(20px + var(--safe-bottom)); right: 20px;
    display: inline-flex; align-items: center; gap: 6px;
    padding: 12px 22px; font-size: 14px; font-weight: 700;
    background: var(--primary); color: var(--white);
    border-radius: 999px; box-shadow: 0 8px 24px rgba(232,138,168,0.4);
    z-index: 90; transition: all var(--transition);
}
.btn-float:hover { background: var(--primary-dark); color: var(--white); transform: translateY(-2px); }
.float-icon { font-size: 18px; font-weight: 900; }

.back-to-top {
    position: fixed; bottom: calc(20px + var(--safe-bottom)); left: 20px;
    width: 44px; height: 44px; border-radius: 50%;
    background: var(--text); color: var(--white); font-size: 20px; font-weight: 700;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2); z-index: 90;
    opacity: 0; visibility: hidden; transition: all var(--transition);
}
.back-to-top.visible { opacity: 1; visibility: visible; }
.back-to-top:hover { background: var(--primary-dark); }

/* === 移动端断点 === */
@media (max-width: 1020px) {
    .nav-menu {
        position: fixed; top: 64px; left: 0; right: 0;
        background: var(--white); flex-direction: column;
        padding: 20px 24px; gap: 20px; align-items: stretch;
        box-shadow: var(--shadow-lg); border-bottom: 1px solid var(--border);
        transform: translateY(-130%); visibility: hidden;
        transition: transform 0.35s ease, visibility 0.35s;
        max-height: calc(100vh - 64px); overflow-y: auto;
        overscroll-behavior: contain;
        -webkit-overflow-scrolling: touch;
    }
    .nav-menu.active { transform: translateY(0); visibility: visible; }
    .nav-menu ul { flex-direction: column; gap: 4px; align-items: stretch; }
    .nav-menu ul li a { display: block; padding: 14px 4px; font-size: 15px; min-height: 48px; border-radius: 8px; }
    .nav-menu ul li a:active { background: var(--primary-soft); }
    .nav-menu ul li a::after { display: none; }
    .nav-download { width: 100%; }
    .mobile-menu-toggle { display: flex; }

    .hero { padding: 40px 0 48px; }
    .hero-inner { grid-template-columns: 1fr; gap: 32px; text-align: center; justify-items: center; }
    .hero-sub { margin-left: auto; margin-right: auto; }
    .hero-cta { justify-content: center; }
    .hero-rating { justify-content: center; }
    .hero-trust { grid-template-columns: 1fr 1fr; max-width: 100%; gap: 8px 16px; }
    .hero-phone { max-width: 220px; }
    .hero h1 { font-size: 2.2rem; }

    section { padding: 40px 0; }
    .section-head { margin-bottom: 28px; }
    .section-head h2 { font-size: 1.55rem; }
    .preview-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
    .features-grid { grid-template-columns: 1fr; gap: 14px; }
    .feature-card { padding: 22px 20px; }
    .version-item { grid-template-columns: 1fr; gap: 12px; padding: 18px 18px; }
    .tutorial-step { grid-template-columns: 1fr; gap: 12px; padding: 18px 18px; text-align: left; }
    .step-num { width: 40px; height: 40px; font-size: 18px; }
    .reviews-grid { grid-template-columns: 1fr; }
    .keyword-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr; gap: 24px; }
    .faq-answer-inner { padding-left: 20px; }
    .compare-table th, .compare-table td { padding: 10px 8px; font-size: 12px; }
    .keyword-nav, .seo-content { padding: 40px 0; }
    body { padding-bottom: calc(80px + var(--safe-bottom)); }
}

/* 平板断点（768-1020px）keyword-grid 用 3 列避免过长 */
@media (max-width: 1020px) and (min-width: 769px) {
    .keyword-grid { grid-template-columns: repeat(3, 1fr); }
    .preview-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 430px) {
    .container { padding: 0 16px; }
    .hero h1 { font-size: 1.9rem; }
    .hero-sub { font-size: 14px; }
    .hero-trust li { font-size: 12px; }
    .section-head h2 { font-size: 1.4rem; }
    .preview-grid { gap: 10px; }
    .feature-card { padding: 18px 16px; }
    .feature-card h3 { font-size: 16px; }
    .btn { padding: 10px 22px; font-size: 14px; min-height: 42px; }
    /* 浮动下载按钮收为圆形图标，与回到顶部按钮对称 */
    .btn-float {
        width: 48px; height: 48px; padding: 0;
        border-radius: 50%; font-size: 22px; gap: 0;
    }
    .float-text { display: none; }
    .float-icon { font-size: 22px; }
    .faq-question { padding: 14px 16px; }
    .faq-question h3 { font-size: 14px; }
    .faq-answer-inner { padding: 0 16px 16px 16px; font-size: 13px; }
    .keyword-grid a { font-size: 12px; padding: 10px 6px; min-height: 44px; }
}

@media (max-width: 375px) {
    .container { padding: 0 14px; }
    .hero { padding: 32px 0 40px; }
    .hero h1 { font-size: 1.7rem; }
    .hero-tag { font-size: 10px; padding: 4px 10px; }
    .hero-sub { font-size: 13px; }
    .hero-cta { flex-direction: column; width: 100%; }
    .hero-cta .btn { width: 100%; }
    .hero-trust { grid-template-columns: 1fr; }
    .hero-phone { max-width: 180px; }
    section { padding: 32px 0; }
    .section-head { margin-bottom: 20px; }
    .section-head h2 { font-size: 1.3rem; }
    .section-eyebrow { font-size: 10px; }
    .breadcrumb { font-size: 11px; padding: 8px 0; }
    .feature-card { padding: 16px 14px; }
    .feature-card h3 { font-size: 15px; }
    .version-item, .tutorial-step { padding: 16px 14px; }
    .faq-question { padding: 12px 14px; }
    .faq-question h3 { font-size: 13px; }
    .faq-answer-inner { padding: 0 14px 14px 14px; font-size: 12.5px; }
    .keyword-grid a { font-size: 11.5px; padding: 8px 4px; min-height: 40px; }
    .btn-float, .back-to-top { width: 44px; height: 44px; bottom: calc(16px + var(--safe-bottom)); }
    .btn-float { right: 14px; }
    .back-to-top { left: 14px; }
}