/* ==========================================================================
   米兰体育 App下载中心 - style.css
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

:root {
  --deep-nav: #081a2c;
  --deep-panel: #0e2c4a;
  --deep-card: #123a5e;
  --brand-blue: #125fc4;
  --sport-blue: #2583e8;
  --accent-red: #e84646;
  --accent-orange: #f0802f;
  --update-green: #18a66a;
  --light-bg: #f2f5f8;
  --card-bg: #ffffff;
  --text-dark: #202938;
  --text-secondary: #687386;
  --border-soft: #dce4ed;
  --max-width: 1200px;
  --nav-height: 70px;
}

body {
  background: var(--light-bg); color: var(--text-dark);
  font-family: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", "Segoe UI", sans-serif;
  line-height: 1.7; font-size: 15px; overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
table { border-collapse: collapse; width: 100%; }

.container { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.zone { padding: 58px 0; }
.zone-deep { background: var(--deep-nav); color: #e6ecf5; }
.zone-light { background: var(--light-bg); }
.zone-card { background: var(--card-bg); }

.zone-head { display: flex; flex-direction: column; gap: 8px; margin-bottom: 30px; }
.zone-eyebrow { font-size: 12.5px; font-weight: 800; letter-spacing: 2px; color: var(--accent-orange); text-transform: uppercase; }
.zone-title { font-size: 26px; font-weight: 800; }
.zone-deep .zone-title { color: #fff; }
.zone-light .zone-title, .zone-card .zone-title { color: var(--text-dark); }
.zone-desc { font-size: 14px; color: var(--text-secondary); max-width: 720px; }
.zone-deep .zone-desc { color: #8fb3e0; }

.notice-strip {
  background: rgba(24,166,106,0.1); border: 1px solid rgba(24,166,106,0.35); border-left: 4px solid var(--update-green);
  border-radius: 10px; padding: 13px 18px; font-size: 13px; margin-bottom: 24px; color: #0d6b45;
}
.zone-deep .notice-strip { color: #7be0b6; background: rgba(24,166,106,0.14); }

/* ---------- 顶部导航 ---------- */
.site-header { position: sticky; top: 0; z-index: 500; height: var(--nav-height); background: rgba(8,26,44,0.96); border-bottom: 1px solid rgba(255,255,255,0.06); }
.nav-inner { max-width: var(--max-width); margin: 0 auto; height: var(--nav-height); padding: 0 24px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.nav-logo img { height: 42px; width: auto; }
.nav-menu { display: flex; align-items: center; gap: 2px; }
.nav-menu a { padding: 8px 12px; border-radius: 999px; font-size: 13px; color: #a9c2de; transition: color 0.2s, background 0.2s; white-space: nowrap; }
.nav-menu a:hover { color: #fff; }
.nav-menu a.active { color: #081a2c; background: var(--sport-blue); font-weight: 700; }
.nav-cta { display: inline-block; padding: 10px 18px; border-radius: 999px; background: linear-gradient(135deg, var(--brand-blue), var(--sport-blue)); color: #fff; font-weight: 700; font-size: 12.5px; white-space: nowrap; }
.nav-toggle { display: none; flex-direction: column; gap: 4px; padding: 8px; }
.nav-toggle span { width: 22px; height: 2px; background: #fff; border-radius: 2px; }

/* ---------- 按钮 ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 14px 28px; border-radius: 999px; font-size: 14.5px; font-weight: 700; transition: transform 0.2s, background 0.2s, border-color 0.2s; }
.btn-primary { background: linear-gradient(135deg, var(--brand-blue), var(--sport-blue)); color: #fff; box-shadow: 0 10px 26px rgba(18,95,196,0.35); }
.btn-primary:hover { transform: translateY(-2px); }
.btn-outline { border: 1px solid rgba(255,255,255,0.25); color: #fff; background: rgba(255,255,255,0.05); }
.zone-light .btn-outline, .zone-card .btn-outline { border-color: var(--border-soft); color: var(--text-dark); background: #fff; }
.btn-outline:hover { border-color: var(--sport-blue); color: var(--sport-blue); }
.btn-sm { padding: 9px 16px; font-size: 12.5px; }
.btn-block { width: 100%; }
.btn-big { padding: 17px 34px; font-size: 16px; }

/* ---------- App发布首屏 ---------- */
.hero-zone { padding: 54px 0 0; }
.hero-badge-row { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; flex-wrap: wrap; }
.new-badge { display: inline-block; padding: 6px 16px; border-radius: 999px; background: var(--accent-red); color: #fff; font-weight: 800; font-size: 13px; }
.hero-tagline { font-size: 12.5px; color: #8fb3e0; }
.hero-h1 { font-size: 32px; line-height: 1.4; font-weight: 800; color: #fff; margin-bottom: 10px; max-width: 760px; }
.hero-h1 span { color: var(--accent-orange); }
.hero-sub { font-size: 15px; color: #8fb3e0; margin-bottom: 16px; }
.hero-desc { font-size: 14px; color: #a9c2de; max-width: 680px; margin-bottom: 26px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 30px; }
.hero-visual { display: flex; justify-content: center; margin-bottom: -60px; }
.hero-visual img { max-width: 680px; border-radius: 24px; box-shadow: 0 30px 70px rgba(0,0,0,0.4); }

.hero-status-strip { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 1px; background: rgba(255,255,255,0.08); border-radius: 14px; overflow: hidden; border: 1px solid rgba(255,255,255,0.1); position: relative; z-index: 2; margin-top: 40px; transform: translateY(60px); }
.hero-status-strip .cell { background: var(--deep-panel); padding: 16px; text-align: center; }
.hero-status-strip .cell .v { font-size: 17px; font-weight: 800; color: var(--accent-orange); margin-bottom: 4px; }
.hero-status-strip .cell .l { font-size: 11px; color: #8fb3e0; }

/* ---------- 快速下载控制台 ---------- */
.console-zone { padding-top: 120px; }
.download-console { background: var(--card-bg); border-radius: 24px; border: 1px solid var(--border-soft); box-shadow: 0 24px 60px rgba(8,26,44,0.12); overflow: hidden; }
.console-left { background: var(--deep-nav); color: #fff; padding: 26px; }
.console-left img { border-radius: 14px; margin-bottom: 14px; }
.console-left .status-line { display: flex; justify-content: space-between; font-size: 12px; color: #8fb3e0; padding: 6px 0; border-bottom: 1px solid rgba(255,255,255,0.08); }
.console-left .status-line b { color: #fff; }

.console-body { display: grid; grid-template-columns: 320px 1fr; }
.console-tabs { display: flex; flex-direction: column; background: var(--light-bg); border-right: 1px solid var(--border-soft); }
.console-tab { text-align: left; padding: 18px 22px; border-bottom: 1px solid var(--border-soft); font-size: 14px; color: var(--text-secondary); }
.console-tab .num { font-size: 11px; color: var(--sport-blue); display: block; margin-bottom: 3px; }
.console-tab.active { background: #fff; color: var(--text-dark); font-weight: 700; border-left: 4px solid var(--brand-blue); }

.console-panels { padding: 26px 30px; }
.console-panel { display: none; }
.console-panel.active { display: block; }
.console-panel h4 { font-size: 19px; margin-bottom: 12px; color: var(--text-dark); }
.console-meta-row { display: flex; flex-wrap: wrap; gap: 8px 20px; font-size: 12.5px; color: var(--text-secondary); margin-bottom: 14px; }
.console-meta-row b { color: var(--text-dark); }
.console-panel .desc { font-size: 13.5px; color: var(--text-secondary); margin-bottom: 8px; }
.console-list { display: flex; flex-direction: column; gap: 8px; margin: 14px 0; }
.console-list li { font-size: 12.5px; color: var(--text-secondary); padding-left: 18px; position: relative; }
.console-list li::before { content: "✓"; position: absolute; left: 0; color: var(--update-green); font-weight: 800; }
.console-note { background: var(--light-bg); border-radius: 10px; padding: 12px 14px; font-size: 12px; color: var(--text-secondary); margin-bottom: 18px; }

.console-extra { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; padding: 0 30px 30px; }
.qr-panel { background: var(--light-bg); border: 1px solid var(--border-soft); border-radius: 14px; padding: 18px; display: flex; align-items: center; gap: 14px; }
.qr-panel img { border-radius: 8px; background: #fff; padding: 6px; border: 1px solid var(--border-soft); }
.qr-panel p { font-size: 12px; color: var(--text-secondary); }

/* ---------- 版本选择助手 ---------- */
.advisor-box { background: var(--card-bg); border-radius: 20px; border: 1px solid var(--border-soft); box-shadow: 0 16px 40px rgba(8,26,44,0.08); padding: 26px; }
.advisor-steps { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 14px; margin-bottom: 20px; }
.advisor-q { background: var(--light-bg); border-radius: 12px; padding: 14px; }
.advisor-q .qn { font-size: 11px; color: var(--sport-blue); font-weight: 700; margin-bottom: 6px; display: block; }
.advisor-q p { font-size: 12.5px; color: var(--text-dark); margin-bottom: 10px; }
.advisor-q .opts { display: flex; flex-wrap: wrap; gap: 6px; }
.advisor-q .opts button { font-size: 11.5px; padding: 6px 10px; border-radius: 999px; border: 1px solid var(--border-soft); background: #fff; color: var(--text-secondary); }
.advisor-q .opts button.picked { background: var(--brand-blue); color: #fff; border-color: var(--brand-blue); }
.advisor-result { background: var(--deep-nav); color: #fff; border-radius: 14px; padding: 18px 22px; }
.advisor-result .r-label { font-size: 12px; color: #8fb3e0; margin-bottom: 6px; }
.advisor-result .r-value { font-size: 19px; font-weight: 800; color: var(--accent-orange); }

.compare-table-wrap { overflow-x: auto; margin-top: 24px; border-radius: 14px; border: 1px solid var(--border-soft); }
.compare-table { min-width: 640px; }
.compare-table th, .compare-table td { padding: 12px 14px; text-align: left; font-size: 12.5px; border-bottom: 1px solid var(--border-soft); white-space: nowrap; }
.compare-table th { background: var(--deep-nav); color: #fff; font-weight: 700; }
.compare-table tr:nth-child(even) td { background: var(--light-bg); }
.compare-table td:first-child, .compare-table th:first-child { font-weight: 700; }

/* ---------- 当前版本重点内容 ---------- */
.current-version-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 18px; }
.cv-card { background: var(--card-bg); border-radius: 16px; border: 1px solid var(--border-soft); padding: 20px; display: flex; gap: 14px; box-shadow: 0 8px 22px rgba(8,26,44,0.05); }
.cv-icon { width: 44px; height: 44px; flex-shrink: 0; border-radius: 10px; background: var(--light-bg); display: flex; align-items: center; justify-content: center; }
.cv-icon svg { width: 26px; height: 26px; }
.cv-card h4 { font-size: 15px; margin-bottom: 4px; }
.cv-type { font-size: 11px; color: var(--brand-blue); font-weight: 700; display: block; margin-bottom: 6px; }
.cv-card p { font-size: 12.5px; color: var(--text-secondary); margin-bottom: 8px; }
.cv-diff { font-size: 11.5px; color: var(--update-green); }
.cv-device { font-size: 11px; color: var(--text-secondary); }

/* ---------- 最近内容更新 ---------- */
.latest-layout { display: grid; grid-template-columns: 1.4fr 1fr; gap: 20px; margin-bottom: 20px; }
.latest-focus { background: var(--card-bg); border-radius: 18px; overflow: hidden; border: 1px solid var(--border-soft); box-shadow: 0 14px 36px rgba(8,26,44,0.07); }
.latest-focus img { width: 100%; height: 220px; object-fit: cover; }
.latest-focus-body { padding: 20px; }
.latest-focus-body .tag { font-size: 11px; font-weight: 700; color: var(--accent-red); background: rgba(232,70,70,0.08); padding: 3px 9px; border-radius: 6px; }
.latest-focus-body h3 { font-size: 18px; margin: 8px 0; }
.latest-focus-body p { font-size: 13px; color: var(--text-secondary); margin-bottom: 10px; }

.latest-side-list { display: flex; flex-direction: column; gap: 12px; }
.latest-side-item { background: var(--card-bg); border: 1px solid var(--border-soft); border-radius: 12px; padding: 14px; box-shadow: 0 6px 18px rgba(8,26,44,0.04); }
.latest-side-item .meta-row { display: flex; justify-content: space-between; font-size: 11px; color: var(--text-secondary); margin-bottom: 6px; }
.latest-side-item h4 { font-size: 13.5px; margin-bottom: 4px; }
.latest-side-item p { font-size: 11.5px; color: var(--text-secondary); }

.latest-compact-filter { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; }
.latest-compact-filter button { padding: 7px 14px; border-radius: 999px; border: 1px solid var(--border-soft); font-size: 12px; color: var(--text-secondary); background: var(--card-bg); }
.latest-compact-filter button.active, .latest-compact-filter button:hover { border-color: var(--brand-blue); color: var(--brand-blue); }

.latest-compact-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 14px; }
.latest-compact { background: var(--card-bg); border: 1px solid var(--border-soft); border-radius: 12px; padding: 14px; box-shadow: 0 6px 16px rgba(8,26,44,0.04); }
.latest-compact .meta-row { display: flex; justify-content: space-between; font-size: 11px; color: var(--text-secondary); margin-bottom: 6px; }
.latest-compact h4 { font-size: 13px; margin-bottom: 6px; }
.latest-compact p { font-size: 11.5px; color: var(--text-secondary); }

/* ---------- 历史版本记录 ---------- */
.version-archive { display: grid; grid-template-columns: 220px 1fr; gap: 0; border-radius: 18px; overflow: hidden; border: 1px solid var(--border-soft); box-shadow: 0 14px 36px rgba(8,26,44,0.06); }
.archive-rail { background: var(--deep-nav); display: flex; flex-direction: column; }
.archive-rail button { text-align: left; padding: 16px 18px; color: #a9c2de; font-size: 13px; border-bottom: 1px solid rgba(255,255,255,0.06); }
.archive-rail button b { display: block; font-size: 14px; color: #fff; }
.archive-rail button.active { background: var(--deep-panel); color: #fff; border-left: 3px solid var(--accent-orange); }
.archive-panels { background: var(--card-bg); padding: 26px 30px; }
.archive-panel { display: none; }
.archive-panel.active { display: block; }
.archive-panel h4 { font-size: 18px; margin-bottom: 6px; }
.archive-panel .a-meta { font-size: 12px; color: var(--text-secondary); margin-bottom: 12px; }
.archive-panel p { font-size: 13.5px; color: var(--text-secondary); margin-bottom: 12px; }
.archive-panel ul { display: flex; flex-direction: column; gap: 6px; margin-bottom: 12px; }
.archive-panel li { font-size: 12.5px; color: var(--text-secondary); padding-left: 16px; position: relative; }
.archive-panel li::before { content: "▸"; position: absolute; left: 0; color: var(--accent-orange); }
.archive-device { font-size: 11.5px; color: var(--brand-blue); }

/* ---------- App功能介绍 ---------- */
.feature-major-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 18px; margin-bottom: 18px; }
.feature-major { background: var(--deep-nav); border-radius: 18px; overflow: hidden; color: #fff; box-shadow: 0 14px 36px rgba(8,26,44,0.2); }
.feature-major img { width: 100%; height: 180px; object-fit: cover; }
.feature-major-body { padding: 20px; }
.feature-major-body .badge { font-size: 11px; font-weight: 700; color: var(--deep-nav); background: var(--accent-orange); padding: 3px 9px; border-radius: 6px; }
.feature-major-body h3 { font-size: 17px; margin: 8px 0; }
.feature-major-body p { font-size: 12.5px; color: #a9c2de; }

.feature-row-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 16px; margin-bottom: 18px; }
.feature-row { background: var(--card-bg); border-radius: 14px; border: 1px solid var(--border-soft); padding: 18px; display: flex; gap: 12px; box-shadow: 0 8px 20px rgba(8,26,44,0.05); }
.feature-row .icon { width: 40px; height: 40px; flex-shrink: 0; border-radius: 9px; background: var(--light-bg); display: flex; align-items: center; justify-content: center; }
.feature-row .icon svg { width: 24px; height: 24px; }
.feature-row h4 { font-size: 14px; margin-bottom: 4px; }
.feature-row p { font-size: 12px; color: var(--text-secondary); }

.feature-compact-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 14px; }
.feature-compact { background: var(--light-bg); border: 1px solid var(--border-soft); border-radius: 12px; padding: 14px; }
.feature-compact h4 { font-size: 13px; margin-bottom: 4px; }
.feature-compact p { font-size: 11.5px; color: var(--text-secondary); }

/* ---------- 移动端界面展示 ---------- */
.ui-showcase-grid { display: grid; grid-template-columns: repeat(5, minmax(0,1fr)); gap: 14px; }
.ui-frame { background: var(--card-bg); border-radius: 14px; overflow: hidden; border: 1px solid var(--border-soft); box-shadow: 0 8px 20px rgba(8,26,44,0.06); }
.ui-frame img { width: 100%; height: 180px; object-fit: cover; }
.ui-frame .cap { padding: 10px 12px; font-size: 11.5px; color: var(--text-secondary); }

/* ---------- 体育内容预览 ---------- */
.content-preview-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 16px; }
.content-card { background: var(--card-bg); border-radius: 14px; overflow: hidden; border: 1px solid var(--border-soft); box-shadow: 0 8px 20px rgba(8,26,44,0.05); }
.content-card img { width: 100%; height: 130px; object-fit: cover; }
.content-card-body { padding: 14px; }
.content-card-body h4 { font-size: 13.5px; margin-bottom: 6px; }
.content-card-body p { font-size: 11.5px; color: var(--text-secondary); margin-bottom: 8px; }
.content-tags { display: flex; gap: 5px; flex-wrap: wrap; margin-bottom: 8px; }
.content-tags span { font-size: 10px; background: var(--light-bg); border: 1px solid var(--border-soft); padding: 2px 7px; border-radius: 5px; color: var(--text-secondary); }
.content-time { font-size: 10.5px; color: var(--update-green); }

/* ---------- 安装教程 ---------- */
.install-routes { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 18px; margin-bottom: 24px; }
.route-card { border-radius: 16px; padding: 20px; color: #fff; }
.route-android { background: linear-gradient(160deg, #18a66a, #0d6b45); }
.route-ios { background: linear-gradient(160deg, #2583e8, #125fc4); }
.route-web { background: linear-gradient(160deg, #f0802f, #c85f18); }
.route-card h4 { font-size: 15px; margin-bottom: 10px; }
.route-step { font-size: 12.5px; padding: 6px 0; border-bottom: 1px solid rgba(255,255,255,0.16); }
.route-step:last-child { border-bottom: none; }

.trouble-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 12px; }
.trouble-item { background: var(--card-bg); border: 1px solid var(--border-soft); border-radius: 10px; padding: 14px 16px; }
.trouble-item h4 { font-size: 13px; color: var(--accent-red); margin-bottom: 4px; }
.trouble-item p { font-size: 12px; color: var(--text-secondary); }
.trouble-order { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.trouble-order span { font-size: 11.5px; background: var(--light-bg); border: 1px solid var(--border-soft); padding: 5px 12px; border-radius: 999px; color: var(--text-secondary); }

/* ---------- 用户反馈 ---------- */
.review-wall { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 16px; }
.review-note { background: var(--card-bg); border-radius: 14px; border: 1px solid var(--border-soft); padding: 18px; box-shadow: 0 8px 20px rgba(8,26,44,0.05); }
.review-note p { font-size: 13px; color: var(--text-dark); margin-bottom: 12px; }
.review-note .who { display: flex; align-items: center; gap: 10px; }
.review-avatar { width: 32px; height: 32px; border-radius: 50%; background: linear-gradient(135deg, var(--brand-blue), var(--accent-orange)); display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 700; color: #fff; }
.review-note .name { font-size: 12px; color: var(--text-secondary); }

/* ---------- FAQ ---------- */
.faq-list { display: flex; flex-direction: column; gap: 10px; max-width: 900px; }
.faq-item { background: var(--card-bg); border: 1px solid var(--border-soft); border-radius: 10px; overflow: hidden; }
.faq-question { width: 100%; display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 15px 18px; font-size: 13.5px; font-weight: 700; text-align: left; color: var(--text-dark); }
.faq-question .plus { flex-shrink: 0; width: 20px; height: 20px; border-radius: 50%; border: 1px solid var(--border-soft); display: flex; align-items: center; justify-content: center; font-size: 14px; color: var(--sport-blue); transition: transform 0.2s; }
.faq-item.open .faq-question .plus { transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.25s ease; }
.faq-answer p { padding: 0 18px 16px; font-size: 12.5px; color: var(--text-secondary); }
.faq-item.open .faq-answer { max-height: 260px; }

/* ---------- Footer ---------- */
.site-footer { background: var(--deep-nav); color: #a9c2de; padding: 50px 0 22px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 28px; margin-bottom: 22px; }
.footer-brand p { color: #8494a8; font-size: 13px; max-width: 320px; margin-top: 12px; }
.footer-col h4 { font-size: 13.5px; margin-bottom: 12px; color: #fff; }
.footer-col ul { display: flex; flex-direction: column; gap: 8px; }
.footer-col a, .footer-col li { font-size: 12.5px; color: #8494a8; }
.footer-col a:hover { color: var(--accent-orange); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 16px; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 11.5px; color: #667085; }

/* ---------- 返回顶部 ---------- */
.back-top { position: fixed; right: 22px; bottom: 22px; width: 44px; height: 44px; border-radius: 50%; background: linear-gradient(135deg, var(--brand-blue), var(--sport-blue)); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 18px; font-weight: 800; box-shadow: 0 8px 22px rgba(8,26,44,0.35); opacity: 0; pointer-events: none; transform: translateY(10px); transition: opacity 0.2s, transform 0.2s; z-index: 400; }
.back-top.visible { opacity: 1; pointer-events: auto; transform: translateY(0); }

/* ---------- 响应式 ---------- */
@media (max-width: 1200px) { .container { padding: 0 20px; } }

@media (max-width: 992px) {
  .console-body { grid-template-columns: 1fr; }
  .console-tabs { flex-direction: row; overflow-x: auto; }
  .console-tab { border-bottom: none; border-right: 1px solid var(--border-soft); flex-shrink: 0; }
  .console-extra { grid-template-columns: 1fr; }
  .advisor-steps { grid-template-columns: 1fr 1fr; }
  .current-version-grid { grid-template-columns: 1fr; }
  .latest-layout { grid-template-columns: 1fr; }
  .latest-compact-grid { grid-template-columns: 1fr 1fr; }
  .version-archive { grid-template-columns: 1fr; }
  .archive-rail { flex-direction: row; overflow-x: auto; }
  .archive-rail button { flex-shrink: 0; border-bottom: none; border-right: 1px solid rgba(255,255,255,0.08); }
  .feature-major-grid { grid-template-columns: 1fr; }
  .feature-row-grid { grid-template-columns: 1fr 1fr; }
  .feature-compact-grid { grid-template-columns: 1fr 1fr; }
  .ui-showcase-grid { grid-template-columns: repeat(3, minmax(0,1fr)); }
  .content-preview-grid { grid-template-columns: 1fr 1fr; }
  .install-routes { grid-template-columns: 1fr; }
  .trouble-grid { grid-template-columns: 1fr; }
  .review-wall { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero-status-strip { grid-template-columns: 1fr 1fr; transform: translateY(40px); }
}

@media (max-width: 768px) {
  .nav-menu { position: fixed; top: var(--nav-height); left: 0; right: 0; background: var(--deep-nav); border-bottom: 1px solid rgba(255,255,255,0.08); flex-direction: column; align-items: stretch; padding: 10px 20px 20px; gap: 4px; transform: translateY(-120%); opacity: 0; transition: transform 0.25s, opacity 0.25s; }
  .nav-menu.open { transform: translateY(0); opacity: 1; }
  .nav-menu a { padding: 12px 10px; border-radius: 8px; }
  .nav-toggle { display: flex; }
  .hero-h1 { font-size: 25px; }
  .hero-status-strip { grid-template-columns: 1fr 1fr; transform: translateY(30px); }
  .console-zone { padding-top: 90px; }
  .advisor-steps { grid-template-columns: 1fr; }
  .latest-compact-grid { grid-template-columns: 1fr; }
  .feature-row-grid { grid-template-columns: 1fr; }
  .feature-compact-grid { grid-template-columns: 1fr; }
  .ui-showcase-grid { grid-template-columns: 1fr 1fr; }
  .content-preview-grid { grid-template-columns: 1fr; }
  .review-wall { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .zone { padding: 42px 0; }
}

@media (max-width: 560px) {
  .zone-title { font-size: 20px; }
  .back-top { right: 14px; bottom: 14px; width: 40px; height: 40px; }
  .ui-showcase-grid { grid-template-columns: 1fr; }
  .hero-status-strip { grid-template-columns: 1fr; }
}