/* ============================================================
   template_008: 青蓝清新数码科技风格
   ============================================================ */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --tech-blue: #00D4FF;
    --tech-blue-dark: #0066FF;
    --tech-blue-light: #E6F9FF;
    --tech-cyan: #00E5CC;
    --tech-bg: #F8FAFC;
    --tech-white: #FFFFFF;
    --tech-gray-50: #F1F5F9;
    --tech-gray-100: #E2E8F0;
    --tech-gray-200: #CBD5E1;
    --tech-gray-400: #94A3B8;
    --tech-gray-600: #475569;
    --tech-gray-800: #1E293B;
    --tech-gray-900: #0F172A;
    --tech-success: #10B981;
    --tech-warning: #F59E0B;
    --tech-danger: #EF4444;
    --font-tech: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

html { scroll-behavior: smooth; }
body {
    font-family: var(--font-tech);
    background: var(--tech-bg);
    color: var(--tech-gray-800);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
button { border: none; background: none; cursor: pointer; font-family: inherit; color: inherit; }
ul, ol { list-style: none; }

.tech-container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ========== 导航 ========== */
.tech-header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--tech-gray-100);
}
.tech-nav-inner {
    height: 68px;
    display: flex; align-items: center; justify-content: space-between;
}
.tech-logo {
    display: flex; align-items: center; gap: 10px;
    font-size: 1.3rem; font-weight: 800; color: var(--tech-gray-900);
}
.tech-nav { display: flex; gap: 8px; }
.tech-link {
    padding: 8px 16px; border-radius: 8px;
    font-size: 0.92rem; font-weight: 500; color: var(--tech-gray-600);
    transition: all 0.2s;
}
.tech-link:hover { background: var(--tech-blue-light); color: var(--tech-blue-dark); }
.tech-link.active {
    background: linear-gradient(135deg, var(--tech-blue), var(--tech-blue-dark));
    color: white;
}
.tech-header-right { display: flex; align-items: center; gap: 16px; }
.tech-tel {
    display: flex; align-items: center; gap: 8px;
    padding: 9px 20px;
    background: linear-gradient(135deg, var(--tech-blue), var(--tech-blue-dark));
    color: white; border-radius: 50px;
    font-size: 0.9rem; font-weight: 600;
    transition: transform 0.2s, box-shadow 0.2s;
}
.tech-tel:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 212, 255, 0.3);
}
.tech-menu-toggle {
    display: none; flex-direction: column; gap: 5px;
    width: 32px; height: 32px;
    align-items: center; justify-content: center;
}
.tech-menu-toggle span {
    display: block; width: 22px; height: 2px;
    background: var(--tech-gray-800); border-radius: 2px;
    transition: all 0.3s;
}
.tech-menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.tech-menu-toggle.active span:nth-child(2) { opacity: 0; }
.tech-menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }
.tech-mobile-menu {
    display: none; position: fixed; top: 68px; left: 0; right: 0;
    background: var(--tech-white);
    border-bottom: 1px solid var(--tech-gray-100);
    padding: 16px; flex-direction: column; gap: 4px;
    z-index: 999; box-shadow: 0 10px 30px rgba(0,0,0,0.08);
}
.tech-mobile-menu.open { display: flex; }
.tm-link {
    padding: 14px 16px; border-radius: 10px;
    font-weight: 500; color: var(--tech-gray-600);
    transition: background 0.2s, color 0.2s;
}
.tm-link:hover, .tm-link.active {
    background: var(--tech-blue-light); color: var(--tech-blue-dark);
}
.tm-tel {
    margin-top: 8px; text-align: center;
    background: linear-gradient(135deg, var(--tech-blue), var(--tech-blue-dark));
    color: white !important; border-radius: 12px !important;
}
.tech-main { padding-top: 68px; min-height: 80vh; }

/* ========== Hero ========== */
.tech-hero {
    position: relative; padding: 80px 0 100px;
    background: linear-gradient(135deg, #F0FDFF 0%, #E6F9FF 50%, #E0F2FE 100%);
    overflow: hidden;
}
.tech-hero-grid {
    position: absolute; inset: 0;
    background-image: 
        linear-gradient(rgba(0,212,255,0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,212,255,0.05) 1px, transparent 1px);
    background-size: 40px 40px;
    mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
}
.th-inner {
    display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center;
    position: relative; z-index: 1;
}
.th-tag {
    display: inline-block;
    padding: 6px 16px;
    background: var(--tech-white);
    border: 1px solid rgba(0,212,255,0.3);
    border-radius: 50px;
    font-size: 0.78rem; font-weight: 700; letter-spacing: 0.08em;
    color: var(--tech-blue-dark);
    margin-bottom: 24px;
    box-shadow: 0 4px 15px rgba(0,212,255,0.1);
}
.th-title {
    font-size: 3.2rem; font-weight: 900; line-height: 1.15;
    color: var(--tech-gray-900); margin-bottom: 20px;
}
.th-highlight {
    background: linear-gradient(135deg, var(--tech-blue), var(--tech-blue-dark));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}
.th-desc {
    font-size: 1.05rem; line-height: 1.8;
    color: var(--tech-gray-600); margin-bottom: 32px; max-width: 520px;
}
.th-btns { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 28px; }
.t-btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 13px 28px;
    border-radius: 50px;
    font-weight: 600; font-size: 0.95rem;
    transition: all 0.25s ease;
}
.t-btn-primary {
    background: linear-gradient(135deg, var(--tech-blue), var(--tech-blue-dark));
    color: white;
    box-shadow: 0 4px 15px rgba(0,212,255,0.3);
}
.t-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0,212,255,0.4);
}
.t-btn-line {
    border: 2px solid var(--tech-gray-200);
    color: var(--tech-gray-700);
}
.t-btn-line:hover {
    border-color: var(--tech-blue);
    color: var(--tech-blue-dark);
    background: var(--tech-white);
}
.t-btn-light {
    background: var(--tech-white);
    color: var(--tech-blue-dark);
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
}
.t-btn-light:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,0,0,0.1); }
.t-btn-full { width: 100%; justify-content: center; }
.th-chips { display: flex; gap: 10px; flex-wrap: wrap; }
.th-chips span {
    padding: 6px 14px;
    background: var(--tech-white);
    border-radius: 20px;
    font-size: 0.82rem; font-weight: 500;
    color: var(--tech-gray-600);
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}
.th-banner {
    position: relative;
}
.th-banner img {
    width: 100%; border-radius: 20px;
    box-shadow: 0 25px 60px rgba(0,102,255,0.15);
}
.th-float {
    position: absolute;
    display: flex; align-items: center; gap: 12px;
    padding: 14px 20px;
    background: var(--tech-white);
    border-radius: 14px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
}
.th-float-1 { bottom: 30px; left: -30px; animation: float1 4s ease-in-out infinite; }
.th-float-2 { top: 30px; right: -20px; animation: float2 4s ease-in-out infinite; }
@keyframes float1 {
    0%,100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}
@keyframes float2 {
    0%,100% { transform: translateY(0); }
    50% { transform: translateY(10px); }
}
.tf-icon { font-size: 1.6rem; }
.th-float strong { display: block; font-size: 0.9rem; color: var(--tech-gray-900); }
.th-float small { font-size: 0.75rem; color: var(--tech-gray-400); }

/* ========== 区块通用 ========== */
.tech-section { padding: 90px 0; }
.tech-section-alt { background: var(--tech-white); }
.sec-head {
    display: flex; align-items: flex-start; gap: 24px;
    margin-bottom: 50px;
}
.sec-index {
    font-size: 3rem; font-weight: 900; line-height: 1;
    background: linear-gradient(135deg, var(--tech-blue), var(--tech-blue-dark));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text; opacity: 0.6;
    flex-shrink: 0;
}
.sec-head h2 {
    font-size: 2rem; font-weight: 800; color: var(--tech-gray-900);
    margin-bottom: 8px;
}
.sec-head p { font-size: 1rem; color: var(--tech-gray-500); }

/* ========== 平台卡片 ========== */
.tech-platform-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
}
.tp-card {
    display: flex; align-items: center; gap: 16px;
    padding: 24px;
    background: var(--tech-white);
    border: 1px solid var(--tech-gray-100);
    border-radius: 16px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}
.tp-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px;
    transform: scaleX(0); transform-origin: left;
    transition: transform 0.3s;
}
.tp-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.08);
    border-color: transparent;
}
.tp-card:hover::before { transform: scaleX(1); }
.tp-tencent::before { background: linear-gradient(90deg, #00a4ff, #0077cc); }
.tp-iqiyi::before { background: linear-gradient(90deg, #00be06, #009604); }
.tp-youku::before { background: linear-gradient(90deg, #12b7f5, #0d8fc4); }
.tp-mgtv::before { background: linear-gradient(90deg, #ff5c8d, #d83a6a); }
.tp-bili::before { background: linear-gradient(90deg, #fb7299, #e85680); }
.tp-more::before { background: linear-gradient(90deg, var(--tech-blue), var(--tech-blue-dark)); }

.tp-logo-wrap {
    width: 56px; height: 56px; border-radius: 14px;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
}
.tp-tencent .tp-logo-wrap { background: linear-gradient(135deg, #00a4ff20, #0077cc20); }
.tp-iqiyi .tp-logo-wrap { background: linear-gradient(135deg, #00be0620, #00960420); }
.tp-youku .tp-logo-wrap { background: linear-gradient(135deg, #12b7f520, #0d8fc420); }
.tp-mgtv .tp-logo-wrap { background: linear-gradient(135deg, #ff5c8d20, #d83a6a20); }
.tp-bili .tp-logo-wrap { background: linear-gradient(135deg, #fb729920, #e8568020); }
.tp-more .tp-logo-wrap { background: linear-gradient(135deg, rgba(0,212,255,0.15), rgba(0,102,255,0.15)); }
.tp-letter {
    font-size: 1.5rem; font-weight: 900;
}
.tp-tencent .tp-letter { color: #00a4ff; }
.tp-iqiyi .tp-letter { color: #00be06; }
.tp-youku .tp-letter { color: #12b7f5; }
.tp-mgtv .tp-letter { color: #ff5c8d; }
.tp-bili .tp-letter { color: #fb7299; }
.tp-more .tp-letter { color: var(--tech-blue-dark); }
.tp-info { flex: 1; min-width: 0; }
.tp-info h3 { font-size: 1.1rem; font-weight: 700; color: var(--tech-gray-900); margin-bottom: 4px; }
.tp-info p { font-size: 0.85rem; color: var(--tech-gray-500); margin-bottom: 8px; }
.tp-devices { display: flex; gap: 4px; flex-wrap: wrap; }
.tp-devices span {
    padding: 2px 8px;
    background: var(--tech-gray-50);
    border-radius: 4px;
    font-size: 0.7rem; color: var(--tech-gray-500); font-weight: 500;
}
.tp-arrow {
    font-size: 1.3rem; color: var(--tech-gray-300);
    transition: all 0.3s;
}
.tp-card:hover .tp-arrow {
    color: var(--tech-blue);
    transform: translateX(5px);
}

/* ========== 设备卡片 ========== */
.tech-device-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
}
.td-card {
    padding: 28px;
    background: var(--tech-bg);
    border: 1px solid var(--tech-gray-100);
    border-radius: 20px;
    transition: all 0.3s;
}
.td-card:hover {
    transform: translateY(-5px);
    border-color: var(--tech-blue);
    box-shadow: 0 15px 40px rgba(0,212,255,0.12);
    background: var(--tech-white);
}
.td-icon {
    width: 64px; height: 64px; border-radius: 16px;
    background: linear-gradient(135deg, rgba(0,212,255,0.1), rgba(0,102,255,0.1));
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 20px;
}
.td-card h3 { font-size: 1.2rem; font-weight: 700; color: var(--tech-gray-900); margin-bottom: 8px; }
.td-sys { font-size: 0.82rem; color: var(--tech-blue-dark); font-weight: 500; margin-bottom: 12px; }
.td-desc { font-size: 0.9rem; color: var(--tech-gray-600); line-height: 1.7; margin-bottom: 16px; }
.td-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 20px; }
.td-tags span {
    padding: 4px 10px;
    background: var(--tech-blue-light);
    color: var(--tech-blue-dark);
    border-radius: 6px;
    font-size: 0.75rem; font-weight: 500;
}
.td-btn {
    display: inline-flex; align-items: center; gap: 4px;
    font-size: 0.9rem; font-weight: 600; color: var(--tech-blue-dark);
    transition: gap 0.2s;
}
.td-btn:hover { gap: 8px; }

/* ========== 安全横幅 ========== */
.tech-safe-banner {
    background: linear-gradient(135deg, var(--tech-blue), var(--tech-blue-dark));
    padding: 32px 0;
}
.tsb-inner {
    display: flex; align-items: center; justify-content: space-between;
    gap: 40px; flex-wrap: wrap;
}
.tsb-left { display: flex; align-items: flex-start; gap: 16px; flex: 1; min-width: 280px; }
.tsb-icon { font-size: 2rem; }
.tsb-left h3 { font-size: 1.2rem; font-weight: 700; color: white; margin-bottom: 6px; }
.tsb-left p { font-size: 0.92rem; color: rgba(255,255,255,0.85); line-height: 1.7; }

/* ========== 步骤流程 ========== */
.tech-steps-wrap { position: relative; }
.t-step {
    display: flex; gap: 32px;
    padding: 32px;
    background: var(--tech-white);
    border: 1px solid var(--tech-gray-100);
    border-radius: 16px;
    margin-bottom: 16px;
    position: relative;
    transition: all 0.3s;
}
.t-step:hover {
    border-color: var(--tech-blue);
    box-shadow: 0 10px 30px rgba(0,212,255,0.1);
}
.t-step::before {
    content: ''; position: absolute; left: 48px; bottom: -17px;
    width: 2px; height: 17px;
    background: var(--tech-gray-200);
}
.t-step-last::before { display: none; }
.ts-num {
    width: 36px; height: 36px; border-radius: 50%;
    background: linear-gradient(135deg, var(--tech-blue), var(--tech-blue-dark));
    color: white; font-weight: 800; font-size: 1rem;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
}
.ts-body h3 { font-size: 1.15rem; font-weight: 700; color: var(--tech-gray-900); margin-bottom: 10px; }
.ts-body p { font-size: 0.92rem; color: var(--tech-gray-600); line-height: 1.7; margin-bottom: 12px; }
.ts-body ul { padding-left: 0; }
.ts-body li {
    position: relative; padding-left: 20px;
    font-size: 0.88rem; color: var(--tech-gray-600); margin-bottom: 6px;
}
.ts-body li::before {
    content: '✓'; position: absolute; left: 0;
    color: var(--tech-success); font-weight: 700;
}

/* ========== 功能介绍 ========== */
.tech-features-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
}
.tf-card {
    padding: 24px;
    background: var(--tech-bg);
    border-radius: 14px;
    border: 1px solid transparent;
    transition: all 0.3s;
}
.tf-card:hover {
    background: var(--tech-white);
    border-color: var(--tech-blue);
    box-shadow: 0 10px 30px rgba(0,212,255,0.1);
    transform: translateY(-3px);
}
.tf-card-icon { font-size: 2rem; margin-bottom: 14px; }
.tf-card h3 { font-size: 1rem; font-weight: 700; color: var(--tech-gray-900); margin-bottom: 8px; }
.tf-card p { font-size: 0.85rem; color: var(--tech-gray-600); line-height: 1.6; }

/* ========== 安全中心 ========== */
.safe-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.safe-card {
    padding: 28px;
    border-radius: 16px;
}
.safe-good {
    background: linear-gradient(135deg, rgba(16,185,129,0.08), rgba(16,185,129,0.03));
    border: 1px solid rgba(16,185,129,0.2);
}
.safe-bad {
    background: linear-gradient(135deg, rgba(239,68,68,0.08), rgba(239,68,68,0.03));
    border: 1px solid rgba(239,68,68,0.2);
}
.safe-card h4 {
    font-size: 1.1rem; font-weight: 700; margin-bottom: 18px;
}
.safe-good h4 { color: var(--tech-success); }
.safe-bad h4 { color: var(--tech-danger); }
.safe-card li {
    position: relative; padding-left: 24px;
    font-size: 0.9rem; line-height: 1.7; margin-bottom: 10px;
}
.safe-good li::before { content: '✓'; position: absolute; left: 0; color: var(--tech-success); font-weight: 700; }
.safe-bad li::before { content: '✗'; position: absolute; left: 0; color: var(--tech-danger); font-weight: 700; }

/* ========== 资讯区域 ========== */
ul.article-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
    list-style: none; margin: 0; padding: 0;
    width: 100%; box-sizing: border-box;
}
ul.article-cards > li.article-card {
    min-width: 0; width: auto; max-width: none;
    margin: 0; float: none; box-sizing: border-box;
    background: var(--tech-bg);
    border-radius: 14px;
    overflow: hidden;
    border: 1px solid var(--tech-gray-100);
    transition: all 0.3s ease;
}
ul.article-cards > li.article-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(0,0,0,0.08);
    border-color: var(--tech-blue);
}
.article-card .card-thumb { width: 100%; overflow: hidden; aspect-ratio: 16/10; }
.article-card .card-thumb img {
    display: block; width: 100%; max-width: 100%; height: 100%; object-fit: cover;
    transition: transform 0.4s;
}
.article-card:hover .card-thumb img { transform: scale(1.05); }
.article-card .card-body { padding: 18px; }
.article-card .card-date {
    display: block; font-size: 0.78rem; color: var(--tech-blue-dark);
    font-weight: 500; margin-bottom: 8px;
}
.article-card .card-title {
    overflow-wrap: anywhere;
    font-size: 0.98rem; font-weight: 700; color: var(--tech-gray-900);
    line-height: 1.5; margin-bottom: 8px;
}
.article-card .card-summary {
    overflow-wrap: anywhere;
    font-size: 0.84rem; color: var(--tech-gray-500); line-height: 1.6;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ========== FAQ ========== */
.tech-faq-wrap { max-width: 800px; margin: 0 auto; }
.tfq-item {
    background: var(--tech-white);
    border: 1px solid var(--tech-gray-100);
    border-radius: 14px;
    margin-bottom: 12px;
    overflow: hidden;
    transition: border-color 0.3s;
}
.tfq-item.active { border-color: var(--tech-blue); }
.tfq-q {
    display: flex; align-items: center; justify-content: space-between;
    padding: 20px 24px; cursor: pointer;
}
.tfq-q h3 { font-size: 1rem; font-weight: 600; color: var(--tech-gray-800); }
.tfq-icon {
    width: 28px; height: 28px; border-radius: 50%;
    background: var(--tech-blue-light); color: var(--tech-blue-dark);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.2rem; font-weight: 700;
    flex-shrink: 0; margin-left: 16px;
    transition: all 0.3s;
}
.tfq-item.active .tfq-icon {
    background: linear-gradient(135deg, var(--tech-blue), var(--tech-blue-dark));
    color: white; transform: rotate(180deg);
}
.tfq-a {
    max-height: 0; overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}
.tfq-item.active .tfq-a {
    max-height: 300px; padding: 0 24px 20px;
}
.tfq-a p { font-size: 0.9rem; color: var(--tech-gray-600); line-height: 1.8; }

/* ========== 关于我们 ========== */
.about-wrap {
    display: grid; grid-template-columns: 1fr 1fr; gap: 60px;
}
.about-left .sec-index { margin-bottom: 12px; display: block; }
.about-left h2 { font-size: 2rem; font-weight: 800; color: var(--tech-gray-900); margin-bottom: 16px; }
.about-desc { font-size: 1rem; color: var(--tech-gray-600); line-height: 1.8; margin-bottom: 32px; }
.al-item {
    display: flex; gap: 16px;
    padding: 20px;
    background: var(--tech-bg);
    border-radius: 12px;
    margin-bottom: 12px;
}
.al-icon { font-size: 1.5rem; flex-shrink: 0; }
.al-item h4 { font-size: 1rem; font-weight: 700; color: var(--tech-gray-900); margin-bottom: 4px; }
.al-item p { font-size: 0.88rem; color: var(--tech-gray-600); line-height: 1.6; }
.disclaimer-box {
    padding: 28px;
    background: var(--tech-bg);
    border: 1px solid var(--tech-gray-200);
    border-radius: 16px;
    position: sticky; top: 100px;
}
.disclaimer-box h4 { font-size: 1.1rem; font-weight: 700; color: var(--tech-warning); margin-bottom: 16px; }
.disclaimer-box p {
    font-size: 0.88rem; color: var(--tech-gray-600); line-height: 1.8;
    margin-bottom: 12px;
}
.disclaimer-box p:last-child { margin-bottom: 0; }

/* ========== 联系方式 ========== */
.contact-wrap {
    display: grid; grid-template-columns: 1fr 1fr; gap: 60px;
}
.contact-info .sec-index { display: block; margin-bottom: 12px; }
.contact-info h2 { font-size: 2rem; font-weight: 800; color: var(--tech-gray-900); margin-bottom: 16px; }
.contact-info > p { font-size: 1rem; color: var(--tech-gray-600); line-height: 1.8; margin-bottom: 28px; }
.contact-tel-card {
    display: block;
    padding: 28px;
    background: linear-gradient(135deg, #F0FDFF, #E0F2FE);
    border: 1px solid rgba(0,212,255,0.3);
    border-radius: 16px;
    margin-bottom: 20px;
    transition: transform 0.3s;
}
.contact-tel-card:hover { transform: translateY(-3px); }
.ctc-label { display: block; font-size: 0.85rem; color: var(--tech-blue-dark); font-weight: 600; margin-bottom: 8px; }
.ctc-num { display: block; font-size: 1.8rem; font-weight: 900; color: var(--tech-gray-900); margin-bottom: 4px; }
.ctc-note { font-size: 0.8rem; color: var(--tech-gray-500); }
.contact-notice {
    padding: 20px;
    background: #FFFBEB;
    border: 1px solid #FDE68A;
    border-radius: 12px;
}
.contact-notice p { font-size: 0.88rem; color: #92400E; line-height: 1.7; }
.contact-form-box {
    padding: 32px;
    background: var(--tech-white);
    border: 1px solid var(--tech-gray-100);
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.05);
}
.contact-form-box h3 { font-size: 1.2rem; font-weight: 700; color: var(--tech-gray-900); margin-bottom: 6px; }
.cf-note { font-size: 0.8rem; color: var(--tech-danger); margin-bottom: 24px; }
.tech-form input,
.tech-form select,
.tech-form textarea {
    width: 100%;
    padding: 13px 16px;
    background: var(--tech-bg);
    border: 1px solid var(--tech-gray-200);
    border-radius: 10px;
    font-family: inherit; font-size: 0.9rem; color: var(--tech-gray-800);
    margin-bottom: 12px;
    transition: border-color 0.2s, background 0.2s;
}
.tech-form input:focus,
.tech-form select:focus,
.tech-form textarea:focus {
    outline: none; border-color: var(--tech-blue); background: var(--tech-white);
}
.tech-form textarea { resize: vertical; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-row input { margin-bottom: 0; }

/* ========== 页脚 ========== */
.tech-footer {
    background: var(--tech-gray-900);
    color: var(--tech-gray-400);
    padding: 60px 0 24px;
}
.tf-grid {
    display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}
.tf-logo {
    font-size: 1.4rem; font-weight: 800;
    background: linear-gradient(135deg, var(--tech-blue), var(--tech-cyan));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
}
.tf-desc { font-size: 0.9rem; line-height: 1.8; margin-bottom: 12px; }
.tf-note { font-size: 0.82rem; color: var(--tech-gray-600); }
.tf-col h4 { font-size: 0.95rem; font-weight: 600; color: var(--tech-white); margin-bottom: 16px; }
.tf-col a {
    display: block; font-size: 0.88rem; color: var(--tech-gray-400);
    margin-bottom: 10px; transition: color 0.2s;
}
.tf-col a:hover { color: var(--tech-blue-light); }
.tf-bottom { padding-top: 24px; text-align: center; }
.tf-bottom p { font-size: 0.85rem; }

/* ========== 文章详情 ========== */
.tech-article-page { padding: 40px 0 80px; background: var(--tech-bg); }
.article-container {
    max-width: 780px; margin: 0 auto;
    background: var(--tech-white);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 4px 30px rgba(0,0,0,0.04);
}
.article-container > .breadcrumb,
.article-container > a[href] {
    font-size: 0.88rem; color: var(--tech-gray-500);
    margin-bottom: 28px; display: block;
}
.article-header { margin-bottom: 28px; }
.article-header h1 {
    font-size: 2rem; font-weight: 800; color: var(--tech-gray-900);
    line-height: 1.35; margin-bottom: 16px;
}
.article-meta { display: flex; gap: 20px; margin-bottom: 20px; font-size: 0.88rem; color: var(--tech-gray-500); }
.am-tel { color: var(--tech-blue-dark); font-weight: 600; }
.article-summary {
    padding: 20px 24px;
    background: linear-gradient(135deg, #F0FDFF, #E6F9FF);
    border-left: 4px solid var(--tech-blue);
    border-radius: 0 12px 12px 0;
    font-size: 1rem; color: var(--tech-gray-700); line-height: 1.8;
}
.article-cover { margin-bottom: 32px; border-radius: 12px; overflow: hidden; }
.article-cover img { width: 100%; height: auto; }
.article-body {
    font-size: 1rem; line-height: 1.9; color: var(--tech-gray-700);
    margin-bottom: 40px;
}
.article-body h2, .article-body h3 {
    margin: 28px 0 14px; font-weight: 700; color: var(--tech-gray-900);
}
.article-body h2 { font-size: 1.5rem; }
.article-body h3 { font-size: 1.25rem; }
.article-body p { margin-bottom: 16px; }
.article-body img {
    max-width: 100%; border-radius: 10px; margin: 20px 0;
}
.article-body ul, .article-body ol { margin: 16px 0; padding-left: 24px; }
.article-body li { margin-bottom: 8px; }
.article-actions { margin-bottom: 40px; }
.article-actions h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 16px; color: var(--tech-gray-900); }
.aa-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.aa-item {
    padding: 12px; text-align: center;
    background: var(--tech-bg);
    border: 1px solid var(--tech-gray-100);
    border-radius: 10px;
    font-size: 0.88rem; color: var(--tech-gray-600);
    transition: all 0.2s;
}
.aa-item:hover { border-color: var(--tech-blue); color: var(--tech-blue-dark); background: var(--tech-blue-light); }
.article-cta {
    padding: 36px;
    background: linear-gradient(135deg, #F0FDFF, #E6F9FF);
    border-radius: 16px;
    text-align: center;
}
.article-cta h3 { font-size: 1.3rem; font-weight: 700; color: var(--tech-gray-900); margin-bottom: 10px; }
.article-cta p { color: var(--tech-gray-600); margin-bottom: 20px; }
.cta-btns { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
    .th-inner { grid-template-columns: 1fr; gap: 50px; }
    .th-right { order: -1; max-width: 500px; margin: 0 auto; }
    .tech-platform-grid { grid-template-columns: repeat(2, 1fr); }
    .tech-device-grid { grid-template-columns: repeat(2, 1fr); }
    .tech-features-grid { grid-template-columns: repeat(2, 1fr); }
    .safe-grid { grid-template-columns: 1fr; }
    .about-wrap { grid-template-columns: 1fr; gap: 40px; }
    .disclaimer-box { position: static; }
    .contact-wrap { grid-template-columns: 1fr; gap: 40px; }
    .tf-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
}

@media (max-width: 768px) {
    .tech-nav { display: none; }
    .tech-tel { display: none; }
    .tech-menu-toggle { display: flex; }
    .tech-hero { padding: 50px 0 60px; }
    .th-title { font-size: 2.2rem; }
    .th-float { display: none; }
    .th-chips span { font-size: 0.78rem; }
    .tech-section { padding: 60px 0; }
    .sec-head { flex-direction: column; gap: 12px; margin-bottom: 32px; }
    .sec-index { font-size: 2rem; }
    .sec-head h2 { font-size: 1.6rem; }
    .tech-platform-grid { grid-template-columns: 1fr; }
    .tech-device-grid { grid-template-columns: 1fr; }
    .tech-features-grid { grid-template-columns: 1fr; }
    .t-step { flex-direction: column; gap: 16px; padding: 24px; }
    .t-step::before { display: none; }
    .form-row { grid-template-columns: 1fr; }
    .aa-grid { grid-template-columns: repeat(2, 1fr); }
    .cta-btns { flex-direction: column; }
    .cta-btns .t-btn { justify-content: center; }
    .article-container { padding: 24px; }
    .article-header h1 { font-size: 1.5rem; }
    .tf-grid { grid-template-columns: 1fr; }
    .tsb-inner { flex-direction: column; text-align: center; }
    .tsb-left { flex-direction: column; align-items: center; text-align: center; }
}

/* ========== 动画 ========== */
.fade-in {
    opacity: 0; transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    .th-float { animation: none !important; }
}