/* 欧易下载官方网站 — 潮流深色 + 电光橙主题 */
:root {
    --primary: #ff6b2c;
    --primary-dark: #e85a1a;
    --accent: #00d4ff;
    --accent-soft: rgba(0, 212, 255, 0.15);
    --bg-dark: #0c0f14;
    --bg-card: #151a22;
    --bg-elevated: #1c232d;
    --surface: #ffffff;
    --surface-muted: #f4f6f9;
    --text: #0f172a;
    --text-muted: #64748b;
    --text-on-dark: #e8edf5;
    --text-muted-dark: #94a3b8;
    --border: #e2e8f0;
    --border-dark: rgba(255, 255, 255, 0.08);
    --radius: 12px;
    --radius-lg: 16px;
    --radius-pill: 999px;
    --container: 1140px;
    --nav-h: 70px;
    --shadow: 0 6px 24px rgba(15, 23, 42, 0.07);
    --shadow-glow: 0 0 32px rgba(255, 107, 44, 0.18);
    --font: "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
    --gap: 1.15rem;
    --section-py: 4rem;
    --section-head-mb: 2.25rem;
    --card-pad: 1.25rem;
    --card-border: 1px solid var(--border);
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
    font-family: var(--font);
    color: var(--text);
    line-height: 1.65;
    background: var(--surface);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

body.z15e57inner {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --accent: #f59e0b;
    --page-bg: #eef2f8;
    --card-bg: #ffffff;
    background: var(--page-bg);
    color: #1e293b;
}

body.z15e57inner .z15e57navbar {
    background: rgba(255, 255, 255, 0.96);
    border-bottom-color: #dbe3ef;
}

body.z15e57inner .z15e57nav-link {
    color: #334155 !important;
}

body.z15e57inner .z15e57nav-link:hover,
body.z15e57inner .z15e57nav-item.active .z15e57nav-link {
    color: var(--primary) !important;
    background: #eff6ff;
}

body.z15e57inner .z15e57nav-toggle-btn span { background: var(--primary); }

body.z15e57inner .z15e57nav-cta {
    background: linear-gradient(135deg, var(--primary), #3b82f6) !important;
    color: #fff !important;
    box-shadow: 0 4px 16px rgba(37, 99, 235, 0.35);
}

body.z15e57inner .z15e57btn-primary {
    background: linear-gradient(135deg, var(--primary), #3b82f6);
    color: #fff;
    box-shadow: 0 4px 16px rgba(37, 99, 235, 0.3);
}

body.z15e57inner .z15e57btn-outline {
    border-color: var(--primary);
    color: var(--primary);
}

body.z15e57inner .z15e57card {
    background: var(--card-bg);
    border-color: #e2e8f0;
}

body.z15e57inner .z15e57page-header h1 { color: #0f172a; }

body.z15e57inner .z15e57sidebar h3 {
    color: var(--primary);
    border-bottom-color: var(--accent);
}

body.z15e57inner .z15e57footer {
    background: #1e293b;
}

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

a { color: var(--primary); text-decoration: none; transition: color 0.2s, opacity 0.2s; }
a:hover { color: var(--accent); }

body.z15e57inner a { color: var(--primary); }
body.z15e57inner a:hover { color: var(--primary-dark); }

.z15e57container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 1.25rem;
}

.z15e57hero-grid > div,
.z15e57split > div,
.z15e57bento-item,
.z15e57product-card,
.z15e57dl-card,
.z15e57dl-top > div:last-child,
.z15e57tl-item,
.z15e57safe-card,
.z15e57guide-card,
.z15e57faq,
.z15e57news-card,
.z15e57news-body,
.z15e57pill-item,
.z15e57metric {
    min-width: 0;
}

.z15e57section > .z15e57container,
.z15e57hero > .z15e57container {
    overflow: hidden;
}

/* —— 导航 —— */
.z15e57navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    height: var(--nav-h);
    background: rgba(12, 15, 20, 0.88);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-dark);
}

.z15e57navbar .z15e57container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    gap: 1rem;
    position: relative;
}

.z15e57navbar-brand img { height: 40px; width: auto; }

.z15e57navbar-nav {
    display: flex;
    align-items: center;
    gap: 0.1rem;
    list-style: none;
    flex-wrap: nowrap;
    max-width: calc(100% - 150px);
    justify-content: flex-end;
}

.z15e57nav-link {
    display: flex;
    align-items: center;
    min-height: 38px;
    padding: 0.38rem 0.6rem;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-muted-dark) !important;
    border-radius: var(--radius-pill);
    white-space: nowrap;
}

.z15e57nav-link:hover,
.z15e57nav-item.active .z15e57nav-link {
    color: #fff !important;
    background: rgba(255, 107, 44, 0.2);
}

.z15e57nav-cta {
    margin-left: 0.35rem;
    padding: 0.45rem 0.9rem !important;
    font-size: 0.8125rem !important;
    background: linear-gradient(135deg, var(--primary), #ff8f5a) !important;
    color: #fff !important;
    font-weight: 600;
    box-shadow: var(--shadow-glow);
}

.z15e57nav-cta:hover {
    opacity: 0.92;
    color: #fff !important;
}

.z15e57nav-toggle-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 42px;
    height: 42px;
    padding: 10px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-dark);
    border-radius: 10px;
    cursor: pointer;
    flex-shrink: 0;
}

.z15e57nav-toggle-btn span {
    display: block;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
}

body.z15e57nav-open { overflow: hidden; touch-action: none; }

.z15e57nav-item { flex-shrink: 0; }

@media (max-width: 991px) {
    .z15e57nav-item { width: 100%; flex-shrink: 1; }
}

/* —— 按钮 —— */
.z15e57btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.8rem 1.6rem;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-pill);
    border: none;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s, opacity 0.2s;
    text-align: center;
    line-height: 1.35;
}

.z15e57btn-primary {
    background: linear-gradient(135deg, var(--primary), #ff8f4d);
    color: #fff;
    box-shadow: var(--shadow-glow);
}

.z15e57btn-primary:hover { color: #fff; transform: translateY(-2px); }

.z15e57btn-ghost {
    background: transparent;
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.35);
}

.z15e57btn-ghost:hover { background: rgba(255, 255, 255, 0.1); color: #fff; }

.z15e57btn-dark {
    background: var(--bg-elevated);
    color: var(--text-on-dark);
    border: 1px solid var(--border-dark);
}

.z15e57btn-outline {
    background: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
}

body.z15e57inner .z15e57btn-outline {
    color: var(--primary);
    border-color: var(--primary);
}

.z15e57btn-sm { padding: 0.5rem 1rem; font-size: 0.85rem; }
.z15e57btn-block { width: 100%; max-width: 100%; }

/* —— 通用区块 —— */
.z15e57section { padding: var(--section-py) 0; }
.z15e57section-light { background: var(--surface-muted); }
.z15e57section-dark {
    background: var(--bg-dark);
    color: var(--text-on-dark);
    position: relative;
    overflow: hidden;
}

.z15e57section-dark::before {
    content: "";
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--accent-soft), transparent 65%);
    top: -200px;
    right: -100px;
    pointer-events: none;
}

.z15e57section-header {
    text-align: center;
    max-width: 620px;
    margin: 0 auto var(--section-head-mb);
    padding: 0 0.5rem;
    position: relative;
    z-index: 1;
}

.z15e57section-header h2 {
    font-size: clamp(1.65rem, 4vw, 2.15rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 0.65rem;
}

.z15e57section-header p { color: var(--text-muted); font-size: 1rem; }
.z15e57section-dark .z15e57section-header p { color: var(--text-muted-dark); }
.z15e57section-dark .z15e57section-header h2 { color: #fff; }

.z15e57label {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--primary);
    margin-bottom: 0.65rem;
}

.z15e57section-dark .z15e57label { color: var(--accent); }

/* —— Hero —— */
.z15e57hero {
    position: relative;
    padding: 3rem 0 4rem;
    background: var(--bg-dark);
    color: var(--text-on-dark);
    overflow: hidden;
}

.z15e57hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 50% at 20% 40%, rgba(255, 107, 44, 0.18), transparent),
        radial-gradient(ellipse 60% 40% at 80% 20%, rgba(0, 212, 255, 0.12), transparent);
    pointer-events: none;
}

.z15e57hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 2.5rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.z15e57hero h1 {
    font-size: clamp(2rem, 5.5vw, 3.1rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: 1rem;
}

.z15e57hero h1 span {
    background: linear-gradient(90deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.z15e57hero-desc {
    font-size: 1rem;
    color: var(--text-muted-dark);
    margin-bottom: 1rem;
    max-width: 100%;
    word-break: break-word;
}

.z15e57hero-box {
    padding: 0.9rem 1rem;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-dark);
    border-radius: var(--radius);
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 1.25rem;
    word-break: break-word;
}

.z15e57hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.z15e57hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.z15e57tag {
    font-size: 0.75rem;
    padding: 0.35rem 0.85rem;
    border-radius: var(--radius-pill);
    background: rgba(0, 212, 255, 0.12);
    color: var(--accent);
    border: 1px solid rgba(0, 212, 255, 0.25);
}

.z15e57hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.z15e57hero-frame {
    position: relative;
    padding: 0.75rem;
    background: linear-gradient(145deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02));
    border: 1px solid rgba(255, 107, 44, 0.25);
    border-radius: var(--radius-lg);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.35);
}

.z15e57hero-image {
    width: 100%;
    max-width: 280px;
    margin: 0 auto;
    border-radius: calc(var(--radius-lg) - 4px);
}

/* —— 数据条 —— */
.z15e57metrics {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--gap);
    position: relative;
    z-index: 1;
}

.z15e57metric {
    text-align: center;
    padding: 1rem 0.65rem;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-dark);
    border-radius: var(--radius);
}

.z15e57metric strong {
    display: block;
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 800;
    color: var(--accent);
    line-height: 1.2;
}

.z15e57metric span {
    font-size: 0.85rem;
    color: var(--text-muted-dark);
    margin-top: 0.25rem;
    display: block;
}

/* —— Bento 优势 —— */
.z15e57bento {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--gap);
}

.z15e57bento-item {
    grid-column: span 4;
    padding: var(--card-pad);
    background: var(--surface);
    border: var(--card-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    transition: transform 0.2s, box-shadow 0.2s;
    display: flex;
    flex-direction: column;
}

.z15e57bento-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(15, 23, 42, 0.1);
}

.z15e57bento-item.span-6 { grid-column: span 6; }
.z15e57bento-item.span-8 { grid-column: span 8; }
.z15e57bento-item.span-12 { grid-column: span 12; }

.z15e57bento-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    background: linear-gradient(135deg, rgba(255, 107, 44, 0.15), var(--accent-soft));
    border-radius: 12px;
    margin-bottom: 1rem;
}

.z15e57bento-item h3 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text);
}

.z15e57bento-item p {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.6;
    flex: 1;
    margin-bottom: 0;
}

/* —— 双栏叙事 —— */
.z15e57split {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 2.5rem;
    align-items: start;
}

.z15e57split h3 {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.z15e57split p {
    color: var(--text-muted);
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.z15e57pill-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.z15e57pill-item {
    display: flex;
    gap: 0.75rem;
    padding: var(--card-pad);
    background: var(--surface);
    border: var(--card-border);
    border-radius: var(--radius);
    align-items: flex-start;
}

.z15e57pill-num {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), #ff9a5c);
    color: #fff;
    border-radius: 8px;
}

.z15e57pill-item strong {
    display: block;
    font-size: 0.95rem;
    margin-bottom: 0.2rem;
}

.z15e57pill-item p {
    font-size: 0.85rem;
    margin: 0;
    color: var(--text-muted);
}

/* —— 产品条 —— */
.z15e57product-row {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--gap);
}

.z15e57product-card {
    padding: var(--card-pad);
    background: var(--bg-card);
    color: var(--text-on-dark);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-dark);
    position: relative;
    overflow: hidden;
    min-width: 0;
}

.z15e57product-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
}

.z15e57product-card h3 {
    font-size: 1.1rem;
    margin: 0.75rem 0 0.5rem;
}

.z15e57product-card p {
    font-size: 0.88rem;
    color: var(--text-muted-dark);
    line-height: 1.6;
}

.z15e57product-label {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--accent);
}

/* —— 下载 —— */
.z15e57dl-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--gap);
}

.z15e57dl-card {
    display: flex;
    flex-direction: column;
    padding: var(--card-pad);
    background: var(--surface);
    border: var(--card-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    height: 100%;
    transition: transform 0.2s, box-shadow 0.2s;
}

.z15e57dl-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 28px rgba(15, 23, 42, 0.1);
}

.z15e57dl-top {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    margin-bottom: 1rem;
}

.z15e57dl-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    flex-shrink: 0;
}

.z15e57dl-ios { background: linear-gradient(135deg, #6366f1, #4f46e5); }
.z15e57dl-android { background: linear-gradient(135deg, #22c55e, #15803d); }
.z15e57dl-win { background: linear-gradient(135deg, #0ea5e9, #0369a1); }

.z15e57dl-card h3 { font-size: 1rem; margin-bottom: 0.15rem; }
.z15e57dl-card .sub { font-size: 0.8rem; color: var(--text-muted); }

.z15e57dl-list {
    flex: 1;
    list-style: none;
    margin-bottom: 1rem;
    padding: 0.65rem 0.75rem;
    background: var(--surface-muted);
    border-radius: 8px;
    border: 1px solid rgba(226, 232, 240, 0.8);
}

.z15e57dl-list li {
    font-size: 0.84rem;
    color: var(--text-muted);
    padding: 0.35rem 0 0.35rem 1.1rem;
    position: relative;
}

.z15e57dl-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.65rem;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--primary);
}

/* —— 注册时间线 —— */
.z15e57timeline {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--gap);
    counter-reset: tl;
}

.z15e57tl-item {
    position: relative;
    padding: 1.1rem 0.85rem;
    background: var(--surface);
    border: var(--card-border);
    border-radius: var(--radius);
    text-align: center;
}

.z15e57tl-item::before {
    counter-increment: tl;
    content: counter(tl);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    margin: 0 auto 0.65rem;
    font-weight: 800;
    font-size: 0.85rem;
    color: #fff;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 50%;
}

.z15e57tl-item h4 { font-size: 0.92rem; margin-bottom: 0.35rem; }
.z15e57tl-item p { font-size: 0.8rem; color: var(--text-muted); }

.z15e57cta-center { text-align: center; margin-top: 2rem; }

/* —— 安全网格 —— */
.z15e57safe-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--gap);
}

.z15e57safe-card {
    padding: var(--card-pad);
    background: var(--surface);
    border: var(--card-border);
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
}

.z15e57safe-card h3 {
    font-size: 0.95rem;
    margin: 0.65rem 0 0.5rem;
    color: var(--text);
}

.z15e57safe-card ul {
    list-style: none;
    font-size: 0.82rem;
    color: var(--text-muted);
}

.z15e57safe-card li {
    padding: 0.3rem 0;
    border-bottom: 1px solid var(--border);
}

.z15e57safe-card li:last-child { border-bottom: none; }

.z15e57safe-emoji { font-size: 1.5rem; }

.z15e57awards {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--gap);
    margin-top: 2rem;
}

.z15e57award {
    text-align: center;
    padding: 1rem 0.85rem;
    background: var(--surface);
    border-radius: var(--radius);
    border: var(--card-border);
}

.z15e57award h4 { font-size: 0.9rem; color: var(--primary); margin-bottom: 0.25rem; }
.z15e57award p { font-size: 0.8rem; color: var(--text-muted); }

/* —— 指南卡片 —— */
.z15e57guide-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--gap);
}

.z15e57guide-card {
    padding: var(--card-pad);
    background: var(--bg-elevated);
    color: var(--text-on-dark);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-dark);
}

.z15e57guide-card h3 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
    color: #fff;
}

.z15e57guide-card p {
    font-size: 0.88rem;
    color: var(--text-muted-dark);
    line-height: 1.65;
}

/* —— FAQ —— */
.z15e57faq-list {
    max-width: 880px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.z15e57faq {
    padding: var(--card-pad);
    background: var(--surface);
    border: var(--card-border);
    border-radius: var(--radius);
}

.z15e57faq h4 {
    font-size: 0.98rem;
    font-weight: 700;
    margin-bottom: 0.4rem;
    color: var(--text);
}

.z15e57faq p {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.65;
}

/* —— 资讯 —— */
.z15e57news-head {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.75rem;
}

.z15e57news-head h2 {
    font-size: 1.65rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.z15e57news-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--gap);
}

@media (min-width: 992px) and (max-width: 1100px) {
    .z15e57news-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

.z15e57dl-card h3,
.z15e57dl-top > div:last-child {
    word-break: break-word;
    line-height: 1.35;
}

.z15e57safe-card ul { flex: 1; }

.z15e57news-card {
    background: var(--surface);
    border: var(--card-border);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.2s, box-shadow 0.2s;
    display: flex;
    flex-direction: column;
}

.z15e57news-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 28px rgba(15, 23, 42, 0.1);
}

.z15e57thumb-home {
    width: 100%;
    height: 108px;
    object-fit: cover;
}

.z15e57news-body {
    padding: 0.8rem 0.9rem 1rem;
    flex: 1;
}

.z15e57news-meta {
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-bottom: 0.4rem;
}

.z15e57news-card h3 {
    font-size: 0.88rem;
    line-height: 1.45;
    font-weight: 600;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.z15e57news-card h3 a { color: var(--text); }
.z15e57news-card h3 a:hover { color: var(--primary); }

/* —— 页脚 —— */
.z15e57footer {
    background: #080a0e;
    color: var(--text-muted-dark);
    padding: 3.5rem 0 1.5rem;
}

.z15e57footer-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.5fr) repeat(3, minmax(0, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.z15e57footer h5 {
    color: #fff;
    font-size: 0.95rem;
    margin-bottom: 0.85rem;
}

.z15e57footer ul { list-style: none; }
.z15e57footer li { margin-bottom: 0.45rem; }

.z15e57footer a {
    color: var(--text-muted-dark);
    font-size: 0.88rem;
}

.z15e57footer a:hover { color: var(--accent); }

.z15e57footer-desc {
    font-size: 0.88rem;
    margin-top: 0.85rem;
    line-height: 1.7;
    max-width: 320px;
}

.z15e57friend-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem 1rem;
    list-style: none;
}

.z15e57footer-bar {
    border-top: 1px solid var(--border-dark);
    padding-top: 1.25rem;
    text-align: center;
    font-size: 0.82rem;
}

.z15e57footer-bar p { margin-top: 0.4rem; }

/* —— 内页 —— */
.z15e57page-section { padding: 2.5rem 0 3.5rem; }

.z15e57page-header {
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--accent);
}

.z15e57page-header h1 {
    font-size: 1.65rem;
    font-weight: 800;
    margin-bottom: 0.4rem;
}

.z15e57page-header p { color: var(--text-muted); font-size: 0.95rem; }

body.z15e57inner .z15e57page-header {
    border-bottom-color: var(--primary);
}

.z15e57page-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 1.75rem;
    align-items: start;
}

.z15e57card {
    background: var(--surface);
    border: var(--card-border);
    border-radius: var(--radius-lg);
    padding: var(--card-pad);
    box-shadow: var(--shadow);
}

.z15e57card + .z15e57card { margin-top: 1rem; }

.listbox .e2 { list-style: none; }

.listbox .e2 li {
    padding-bottom: 1.15rem;
    margin-bottom: 1.15rem;
    border-bottom: 1px solid var(--border);
}

.listbox .e2 li:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }

.z15e57list-item {
    display: grid;
    grid-template-columns: 118px minmax(0, 1fr);
    gap: 1rem;
    align-items: start;
}

.z15e57thumb-list,
.z15e57thumb-related {
    width: 100%;
    height: 80px;
    object-fit: cover;
    border-radius: 10px;
}

.z15e57list-meta { font-size: 0.78rem; color: var(--text-muted); margin-bottom: 0.3rem; }

.listbox .e2 h2 { font-size: 1rem; margin-bottom: 0.3rem; }
.listbox .e2 h2 a { color: var(--text); font-weight: 600; }
.listbox .e2 p { font-size: 0.88rem; color: var(--text-muted); }

.z15e57sidebar h3 {
    font-size: 0.92rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    padding-bottom: 0.4rem;
    border-bottom: 2px solid var(--primary);
    color: var(--text);
}

body.z15e57inner .z15e57sidebar h3 { color: var(--primary); border-bottom-color: var(--accent); }

.z15e57sidebar ul { list-style: none; }
.z15e57sidebar li { margin-bottom: 0.45rem; }
.z15e57sidebar a { color: #475569; font-size: 0.88rem; }

.z15e57side-article {
    display: flex;
    gap: 0.65rem;
    margin-bottom: 0.75rem;
    align-items: flex-start;
}

.z15e57thumb-side {
    width: 68px;
    height: 50px;
    object-fit: cover;
    border-radius: 8px;
    flex-shrink: 0;
}

.z15e57article-content {
    line-height: 1.8;
    overflow-wrap: break-word;
    word-break: break-word;
}

.z15e57article-content img { max-width: 100%; margin: 1rem 0; border-radius: 10px; }

.z15e57article-content table,
.z15e57article-content pre { max-width: 100%; overflow-x: auto; display: block; }

.z15e57article-meta-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem 1.25rem;
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-bottom: 1.25rem;
    padding-bottom: 0.85rem;
    border-bottom: 1px solid var(--border);
}

.z15e57thumb-cover {
    width: 100%;
    max-height: 300px;
    object-fit: cover;
    border-radius: var(--radius);
    margin-bottom: 1.25rem;
}

.z15e57meta-tags {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
    margin-top: 1.25rem;
}

.z15e57tagitem a {
    display: inline-block;
    padding: 0.25rem 0.7rem;
    background: var(--surface-muted);
    border-radius: var(--radius-pill);
    font-size: 0.78rem;
}

.z15e57related-title {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 0.85rem;
}

.z15e57related-link { font-weight: 600; color: var(--text); }

.z15e57prenext { display: flex; flex-direction: column; gap: 0.65rem; }

.pagebar .pagelist {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
    list-style: none;
    padding: 0;
    margin-top: 1.25rem;
}

/* —— 响应式 —— */
@media (max-width: 1199px) {
    .z15e57navbar-nav { max-width: calc(100% - 140px); }
    .z15e57nav-link { padding: 0.35rem 0.5rem; font-size: 0.78rem; }

    .z15e57bento-item,
    .z15e57bento-item.span-6,
    .z15e57bento-item.span-8 { grid-column: span 6; }
    .z15e57bento-item.span-12 { grid-column: span 12; }
    .z15e57news-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .z15e57safe-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .z15e57dl-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .z15e57dl-grid .z15e57dl-card:last-child {
        grid-column: 1 / -1;
        max-width: 50%;
        margin-left: auto;
        margin-right: auto;
        width: 100%;
    }
}

@media (max-width: 991px) {
    :root {
        --nav-h: 64px;
        --section-py: 2.75rem;
        --section-head-mb: 1.75rem;
        --card-pad: 1.05rem;
    }

    .z15e57nav-toggle-btn { display: flex; }
    .z15e57navbar-brand { flex: 1; min-width: 0; }
    .z15e57navbar-brand img { height: 34px; max-width: 140px; object-fit: contain; }

    .z15e57navbar-nav {
        display: none;
        position: fixed;
        top: var(--nav-h);
        left: 0;
        right: 0;
        width: 100%;
        max-width: none;
        flex-direction: column;
        align-items: stretch;
        max-height: calc(100dvh - var(--nav-h));
        max-height: calc(100svh - var(--nav-h));
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        padding: 0.5rem 1rem calc(1rem + env(safe-area-inset-bottom, 0px));
        background: var(--bg-dark);
        border-bottom: 1px solid var(--border-dark);
        box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
        z-index: 999;
    }

    body.z15e57inner .z15e57navbar-nav {
        background: #fff;
        border-bottom-color: #e2e8f0;
        box-shadow: 0 8px 24px rgba(15, 23, 42, 0.12);
    }

    .z15e57navbar-nav.is-open { display: flex; }

    .z15e57nav-link {
        width: 100%;
        min-height: 46px;
        padding: 0.7rem 1rem;
        font-size: 0.92rem;
        white-space: normal;
        line-height: 1.4;
        border-radius: 10px;
        justify-content: flex-start;
    }

    .z15e57nav-cta {
        margin-left: 0;
        margin-top: 0.35rem;
        width: 100%;
        justify-content: center;
        text-align: center;
    }

    /* Hero 移动端 */
    .z15e57hero { padding: 1.75rem 0 2.5rem; }
    .z15e57hero-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        text-align: left;
    }
    .z15e57hero-visual { order: -1; }
    .z15e57hero h1 { font-size: clamp(1.65rem, 7vw, 2.15rem); }
    .z15e57hero-desc,
    .z15e57hero-box {
        max-width: 100%;
        text-align: left;
    }
    .z15e57hero-box { font-size: 0.88rem; line-height: 1.65; }
    .z15e57hero-image { max-width: min(260px, 78vw); }
    .z15e57hero-frame { padding: 0.6rem; }
    .z15e57hero-actions {
        flex-direction: column;
        align-items: stretch;
        width: 100%;
        gap: 0.6rem;
    }
    .z15e57hero-actions .z15e57btn {
        width: 100%;
        white-space: normal;
        padding: 0.85rem 1rem;
        font-size: 0.9rem;
    }
    .z15e57hero-tags {
        justify-content: flex-start;
        gap: 0.4rem;
    }
    .z15e57tag { font-size: 0.72rem; }

    .z15e57section-header h2 { font-size: 1.45rem; }
    .z15e57section-header p { font-size: 0.92rem; }

    .z15e57metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.75rem; }
    .z15e57split { grid-template-columns: 1fr; gap: 1.5rem; }
    .z15e57split h3 { font-size: 1.25rem; }

    .z15e57bento { grid-template-columns: 1fr; }
    .z15e57bento-item,
    .z15e57bento-item.span-6,
    .z15e57bento-item.span-8,
    .z15e57bento-item.span-12 { grid-column: 1 / -1; }

    .z15e57product-row,
    .z15e57dl-grid,
    .z15e57timeline,
    .z15e57safe-grid,
    .z15e57guide-grid,
    .z15e57awards { grid-template-columns: 1fr; }

    .z15e57dl-grid .z15e57dl-card:last-child {
        grid-column: auto;
        max-width: none;
        margin: 0;
    }

    .z15e57dl-top { align-items: flex-start; }
    .z15e57dl-card .z15e57btn { white-space: normal; }

    .z15e57news-grid { grid-template-columns: 1fr; }
    .z15e57news-head { flex-direction: column; align-items: stretch; }
    .z15e57news-head h2 { font-size: 1.35rem; }
    .z15e57news-head .z15e57btn { width: 100%; }

    .z15e57footer { padding: 2.5rem 0 1.25rem; }
    .z15e57footer-grid { grid-template-columns: 1fr; gap: 1.5rem; }
    .z15e57footer-desc { max-width: 100%; }
    .z15e57friend-links { gap: 0.5rem 0.75rem; }
    .z15e57footer-bar { font-size: 0.78rem; line-height: 1.65; padding-left: 0.5rem; padding-right: 0.5rem; }

    /* 内页移动端 */
    .z15e57page-section { padding: 1.75rem 0 2.5rem; }
    .z15e57page-header h1 { font-size: 1.35rem; line-height: 1.35; }
    .z15e57page-layout { grid-template-columns: 1fr; gap: 1.25rem; }
    .z15e57card { padding: var(--card-pad); }
    .z15e57sidebar .z15e57card + .z15e57card { margin-top: 0.85rem; }

    .z15e57btn { white-space: normal; }
    .z15e57btn:hover { transform: none; }
    .z15e57bento-item:hover,
    .z15e57dl-card:hover,
    .z15e57news-card:hover { transform: none; }
}

@media (max-width: 575px) {
    :root { --section-py: 2.15rem; --gap: 0.85rem; --card-pad: 1rem; }

    .z15e57container {
        padding-left: max(0.9rem, env(safe-area-inset-left));
        padding-right: max(0.9rem, env(safe-area-inset-right));
    }

    .z15e57section-header { margin-bottom: 1.35rem; }
    .z15e57section-header h2 { font-size: 1.3rem; }

    .z15e57metric { padding: 0.75rem 0.45rem; }
    .z15e57metric strong { font-size: 1.25rem; }
    .z15e57metric span { font-size: 0.78rem; }

    .z15e57pill-item { flex-direction: row; align-items: flex-start; }
    .z15e57pill-num { width: 26px; height: 26px; font-size: 0.75rem; }

    .z15e57faq { padding: 1rem; }
    .z15e57faq h4 { font-size: 0.92rem; }

    .z15e57list-item { grid-template-columns: 1fr; gap: 0.65rem; }
    .z15e57thumb-list,
    .z15e57thumb-related {
        height: auto;
        aspect-ratio: 16 / 9;
        max-height: 180px;
        border-radius: var(--radius);
    }
    .z15e57thumb-home { height: 140px; }
    .z15e57news-body { padding: 0.7rem 0.8rem 0.85rem; }

    .z15e57article-meta-bar {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.3rem;
    }
    .z15e57thumb-cover { max-height: 200px; }

    .z15e57side-article {
        flex-direction: column;
        gap: 0.45rem;
    }
    .z15e57side-article > a:last-child {
        font-size: 0.88rem;
        line-height: 1.45;
    }
    .z15e57thumb-side {
        width: 100%;
        height: auto;
        max-height: 110px;
        aspect-ratio: 16 / 9;
    }

    .z15e57hero-tags .z15e57tag { width: auto; max-width: 100%; }
    .z15e57cta-center { margin-top: 1.5rem; }
    .z15e57cta-center .z15e57btn { width: 100%; }

    .pagebar .pagelist { justify-content: center; gap: 0.35rem; }

    .z15e57awards { gap: 0.65rem; }
}

@media (max-width: 380px) {
    .z15e57metrics { grid-template-columns: 1fr; }
    .z15e57hero-actions .z15e57btn { font-size: 0.85rem; padding: 0.8rem 0.75rem; }
    .z15e57nav-link { font-size: 0.88rem; padding: 0.65rem 0.85rem; }
}

@media (min-width: 768px) {
    .z15e57prenext { flex-direction: row; justify-content: space-between; }
}