/* =========================================================
   wcp_web3 — 编辑出版物风格
   设计语言：超大标题字 · 粗细分隔线 · 编号标记 · 杂志网格
   主色：rgba(0,92,151) 点缀：暗金
   ========================================================= */

:root {
    --w3-blue: rgb(0, 92, 151);
    --w3-blue-dark: rgb(0, 62, 105);
    --w3-blue-darker: rgb(0, 40, 70);
    --w3-blue-light: rgb(26, 118, 182);
    --w3-blue-bg: rgb(238, 244, 250);
    --w3-gold: rgb(190, 148, 60);
    --w3-gold-light: rgb(212, 172, 90);
    --w3-text: rgb(30, 42, 56);
    --w3-text-mid: rgb(80, 98, 118);
    --w3-text-light: rgb(140, 155, 172);
    --w3-border: rgb(218, 226, 236);
    --w3-bg: rgb(255, 255, 255);
    --w3-bg-grey: rgb(247, 249, 251);
    --w3-font-serif: Georgia, "Times New Roman", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", serif;
    --w3-font-sans: "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
}

/* ===== 基础 ===== */
*, *::before, *::after { box-sizing: border-box; }
body.w3-body {
    font-family: var(--w3-font-sans);
    color: var(--w3-text);
    background: var(--w3-bg);
    font-size: 15px;
    line-height: 1.8;
    overflow-x: hidden;
}
a { color: var(--w3-blue); transition: color 0.22s ease; }
a:hover, a:focus { color: var(--w3-blue-dark); text-decoration: none; }
img { max-width: 100%; display: block; }
ul, ol { margin: 0; padding: 0; list-style: none; }

/* ===== 布局容器 ===== */
.w3-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}
@media (min-width: 1400px) {
    .w3-container { max-width: 1320px; }
}

/* ===== 顶部工具条 ===== */
.w3-utility {
    background: var(--w3-blue-darker);
    color: rgba(255,255,255,0.75);
    font-size: 12px;
    padding: 7px 0;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}
.w3-utility .w3-container { display: flex; justify-content: space-between; align-items: center; }
.w3-utility-left i { color: var(--w3-gold-light); margin-right: 6px; }
.w3-utility-right { display: flex; align-items: center; gap: 20px; }
.w3-utility-item {
    color: rgba(255,255,255,0.75);
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 12px;
    transition: color 0.2s;
}
.w3-utility-item:hover { color: var(--w3-gold-light); }
.w3-utility-item i { color: var(--w3-gold); }

/* ===== 主导航 ===== */
.w3-header {
    background: #fff;
    border-bottom: 1px solid var(--w3-border);
    position: sticky;
    top: 0;
    z-index: 999;
    box-shadow: 0 1px 8px rgba(0, 40, 70, 0.06);
}
.w3-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 76px;
}
.w3-logo img { height: 44px; width: auto; }

/* 桌面导航 */
.w3-nav-list { display: flex; align-items: center; gap: 4px; }
.w3-nav-item { position: relative; }
.w3-nav-link {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 28px 18px;
    font-size: 15px;
    font-weight: 500;
    color: var(--w3-text);
    position: relative;
    transition: color 0.2s;
}
.w3-nav-link::after {
    content: '';
    position: absolute;
    bottom: 0; left: 18px; right: 18px;
    height: 3px;
    background: var(--w3-gold);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.28s ease;
}
.w3-nav-item:hover > .w3-nav-link,
.w3-nav-item.is-active > .w3-nav-link { color: var(--w3-blue); }
.w3-nav-item:hover > .w3-nav-link::after,
.w3-nav-item.is-active > .w3-nav-link::after { transform: scaleX(1); }
.w3-nav-link i { font-size: 12px; color: var(--w3-text-light); transition: transform 0.2s; }
.w3-nav-item:hover .w3-nav-link i { transform: rotate(180deg); }

/* 下拉子菜单 */
.w3-subnav {
    display: none;
    position: absolute;
    top: 100%; left: 0;
    min-width: 200px;
    background: #fff;
    border: 1px solid var(--w3-border);
    border-top: 3px solid var(--w3-gold);
    box-shadow: 0 8px 24px rgba(0, 40, 70, 0.12);
    z-index: 100;
    padding: 6px 0;
}
.w3-nav-item:hover .w3-subnav { display: block; }
.w3-subnav-link {
    display: block;
    padding: 10px 20px;
    font-size: 14px;
    color: var(--w3-text);
    border-left: 3px solid transparent;
    transition: all 0.18s;
}
.w3-subnav-link:hover,
.w3-subnav-link.is-active {
    background: var(--w3-blue-bg);
    color: var(--w3-blue);
    border-left-color: var(--w3-gold);
}

/* 搜索 */
.w3-search { display: flex; align-items: center; }
.w3-search-input {
    border: 1px solid var(--w3-border);
    border-right: none;
    height: 38px;
    padding: 0 14px;
    font-size: 13px;
    width: 180px;
    outline: none;
    color: var(--w3-text);
    background: var(--w3-bg-grey);
    transition: all 0.25s;
}
.w3-search-input:focus { border-color: var(--w3-blue); background: #fff; width: 220px; }
.w3-search-btn {
    height: 38px;
    width: 42px;
    background: var(--w3-blue);
    border: none;
    color: #fff;
    font-size: 15px;
    cursor: pointer;
    transition: background 0.2s;
}
.w3-search-btn:hover { background: var(--w3-blue-dark); }

/* 汉堡按钮 */
.w3-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    padding: 6px;
    cursor: pointer;
}
.w3-toggle span {
    display: block;
    width: 26px; height: 2px;
    background: var(--w3-text);
    transition: all 0.25s;
}
.w3-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.w3-toggle.is-open span:nth-child(2) { opacity: 0; }
.w3-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 移动端抽屉 */
.w3-mobile-nav {
    display: none;
    border-top: 1px solid var(--w3-border);
    background: #fff;
    padding: 12px 24px 20px;
}
.w3-mobile-nav.is-open { display: block; }
.w3-mobile-nav-list li a {
    display: block;
    padding: 12px 0;
    font-size: 15px;
    font-weight: 500;
    color: var(--w3-text);
    border-bottom: 1px solid var(--w3-border);
    transition: color 0.2s;
}
.w3-mobile-nav-list li a.is-active,
.w3-mobile-nav-list li a:hover { color: var(--w3-blue); }
.w3-mobile-sub { padding-left: 16px; }
.w3-mobile-sub li a { font-size: 14px; color: var(--w3-text-mid); padding: 9px 0; }
.w3-mobile-search { display: flex; margin-top: 14px; }
.w3-mobile-search input {
    flex: 1;
    border: 1px solid var(--w3-border);
    border-right: none;
    height: 40px;
    padding: 0 14px;
    font-size: 14px;
    outline: none;
}
.w3-mobile-search button {
    height: 40px; width: 46px;
    background: var(--w3-blue);
    border: none; color: #fff;
    cursor: pointer;
}

/* ===== Hero 头版 ===== */
.w3-hero { position: relative; }
.w3-hero-slider { height: 600px; }
.w3-hero-slide {
    height: 600px;
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    position: relative;
}
.w3-hero-slide--default {
    background: linear-gradient(160deg, #001e35 0%, #003a63 45%, #005c97 100%);
}
.w3-hero-mask {
    position: absolute;
    inset: 0;
    background: linear-gradient(to right, rgba(0,30,53,0.82) 0%, rgba(0,58,99,0.55) 60%, rgba(0,92,151,0.25) 100%);
}
.w3-hero-body {
    position: relative;
    z-index: 2;
    max-width: 680px;
    padding: 80px 0;
}
.w3-hero-eyebrow {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 24px;
    color: var(--w3-gold-light);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
}
.w3-hero-rule {
    display: inline-block;
    width: 48px; height: 2px;
    background: var(--w3-gold);
}
.w3-hero-title {
    font-family: var(--w3-font-serif);
    font-size: 58px;
    font-weight: 700;
    line-height: 1.15;
    color: #fff;
    margin-bottom: 24px;
    text-shadow: 0 2px 16px rgba(0, 20, 40, 0.4);
}
.w3-hero-sub {
    font-size: 17px;
    color: rgba(255,255,255,0.82);
    line-height: 1.8;
    margin-bottom: 40px;
    max-width: 520px;
}
.w3-btn-hero {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 36px;
    background: var(--w3-gold);
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 1px;
    border: 2px solid var(--w3-gold);
    transition: all 0.3s;
}
.w3-btn-hero:hover {
    background: transparent;
    color: var(--w3-gold-light);
    border-color: var(--w3-gold-light);
}
.w3-btn-hero i { transition: transform 0.3s; }
.w3-btn-hero:hover i { transform: translateX(5px); }

/* Hero 分页器 */
.w3-hero-pagination {
    position: absolute;
    bottom: 36px; left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 10;
}
.w3-hero-pagination .swiper-pagination-bullet {
    width: 40px; height: 3px;
    border-radius: 0;
    background: rgba(255,255,255,0.35);
    opacity: 1;
    transition: all 0.3s;
}
.w3-hero-pagination .swiper-pagination-bullet-active { background: var(--w3-gold); width: 64px; }

/* 滚动提示 */
.w3-hero-scrolltip {
    position: absolute;
    bottom: 36px; right: 40px;
    z-index: 10;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255,255,255,0.5);
}
.w3-hero-scrolltip-line {
    width: 1px; height: 48px;
    background: rgba(255,255,255,0.3);
}
.w3-hero-scrolltip-text {
    font-size: 11px;
    letter-spacing: 2px;
    text-transform: uppercase;
}

/* ===== 数据指标带 ===== */
.w3-metrics {
    background: var(--w3-blue-darker);
    border-top: 3px solid var(--w3-gold);
    padding: 40px 0;
}
.w3-metrics-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
}
.w3-metric {
    text-align: center;
    padding: 10px 24px;
    border-right: 1px solid rgba(255,255,255,0.1);
}
.w3-metric:last-child { border-right: none; }
.w3-metric-num {
    display: block;
    font-family: var(--w3-font-serif);
    font-size: 52px;
    font-weight: 700;
    color: #fff;
    line-height: 1;
    margin-bottom: 8px;
}
.w3-metric-num em {
    font-style: normal;
    font-size: 20px;
    color: var(--w3-gold-light);
    margin-left: 4px;
}
.w3-metric-label {
    display: block;
    font-size: 13px;
    color: rgba(255,255,255,0.6);
    letter-spacing: 1px;
}

/* ===== 通用 Section 头 ===== */
.w3-sec-head {
    text-align: center;
    margin-bottom: 56px;
}
.w3-sec-head--left { text-align: left; margin-bottom: 32px; }
.w3-sec-eyebrow {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--w3-gold);
    margin-bottom: 12px;
}
.w3-sec-title {
    font-family: var(--w3-font-serif);
    font-size: 38px;
    font-weight: 700;
    color: var(--w3-text);
    line-height: 1.25;
    margin: 0;
}
/* 标题下方粗线 */
.w3-sec-head::after {
    content: '';
    display: block;
    width: 48px; height: 3px;
    background: var(--w3-blue);
    margin: 20px auto 0;
}
.w3-sec-head--left::after { margin: 20px 0 0; }

/* ===== 按钮 ===== */
.w3-btn-main {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 13px 32px;
    background: var(--w3-blue);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    border: 2px solid var(--w3-blue);
    transition: all 0.28s;
    cursor: pointer;
    letter-spacing: 0.5px;
}
.w3-btn-main:hover {
    background: var(--w3-blue-dark);
    border-color: var(--w3-blue-dark);
    color: #fff;
}
.w3-btn-ghost {
    display: inline-flex;
    align-items: center;
    padding: 13px 32px;
    background: transparent;
    color: var(--w3-blue);
    font-size: 14px;
    font-weight: 600;
    border: 2px solid var(--w3-blue);
    transition: all 0.28s;
    cursor: pointer;
}
.w3-btn-ghost:hover { background: var(--w3-blue); color: #fff; }
.w3-btn-white {
    display: inline-flex;
    align-items: center;
    padding: 13px 32px;
    background: #fff;
    color: var(--w3-blue);
    font-size: 14px;
    font-weight: 600;
    border: 2px solid #fff;
    transition: all 0.28s;
}
.w3-btn-white:hover { background: transparent; color: #fff; }
.w3-btn-outline-w {
    display: inline-flex;
    align-items: center;
    padding: 13px 32px;
    background: transparent;
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    border: 2px solid rgba(255,255,255,0.6);
    transition: all 0.28s;
}
.w3-btn-outline-w:hover { border-color: #fff; background: rgba(255,255,255,0.1); color: #fff; }
.w3-btn-block { width: 100%; justify-content: center; }

/* ===== 关于我们 ===== */
.w3-about { padding: 90px 0; background: var(--w3-bg-grey); }
.w3-about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}
.w3-about-visual { position: relative; }
.w3-about-frame {
    border: 8px solid #fff;
    box-shadow: 0 20px 60px rgba(0, 40, 70, 0.15);
    overflow: hidden;
}
.w3-about-frame img { width: 100%; height: 400px; object-fit: cover; }
.w3-about-years {
    position: absolute;
    bottom: -24px; right: -24px;
    background: var(--w3-blue);
    color: #fff;
    padding: 24px 28px;
    text-align: center;
    box-shadow: 0 12px 32px rgba(0, 92, 151, 0.35);
}
.w3-about-years-num {
    display: block;
    font-family: var(--w3-font-serif);
    font-size: 56px;
    font-weight: 700;
    line-height: 1;
}
.w3-about-years-text { display: block; font-size: 13px; opacity: 0.8; margin-top: 6px; }
.w3-about-lead {
    font-size: 16px;
    color: var(--w3-text-mid);
    line-height: 1.9;
    margin-bottom: 24px;
}
.w3-about-points {
    margin-bottom: 36px;
}
.w3-about-points li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 14px;
    color: var(--w3-text);
    margin-bottom: 12px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--w3-border);
}
.w3-about-points li::before {
    content: '';
    width: 6px; height: 6px;
    background: var(--w3-gold);
    border-radius: 50%;
    margin-top: 8px;
    flex-shrink: 0;
}
.w3-about-points li:last-child { border-bottom: none; }
.w3-about-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ===== 核心业务：编号列表 ===== */
.w3-business { padding: 90px 0; background: #fff; }
.w3-biz-list { border-top: 2px solid var(--w3-border); }
.w3-biz-item {
    display: grid;
    grid-template-columns: 72px 1fr 80px 48px;
    align-items: center;
    gap: 32px;
    padding: 32px 0;
    border-bottom: 1px solid var(--w3-border);
    transition: all 0.28s;
    cursor: pointer;
}
.w3-biz-item:hover { background: var(--w3-blue-bg); padding-left: 20px; padding-right: 20px; margin: 0 -20px; }
.w3-biz-num {
    font-family: var(--w3-font-serif);
    font-size: 48px;
    font-weight: 700;
    color: var(--w3-border);
    line-height: 1;
    transition: color 0.28s;
}
.w3-biz-item:hover .w3-biz-num { color: var(--w3-gold); }
.w3-biz-title {
    font-family: var(--w3-font-serif);
    font-size: 22px;
    font-weight: 700;
    color: var(--w3-text);
    margin-bottom: 8px;
}
.w3-biz-desc {
    font-size: 14px;
    color: var(--w3-text-mid);
    line-height: 1.7;
    margin: 0;
}
.w3-biz-icon {
    width: 64px; height: 64px;
    border: 2px solid var(--w3-border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--w3-blue);
    transition: all 0.28s;
}
.w3-biz-item:hover .w3-biz-icon {
    background: var(--w3-blue);
    border-color: var(--w3-blue);
    color: #fff;
}
.w3-biz-arrow {
    font-size: 20px;
    color: var(--w3-border);
    transition: all 0.28s;
}
.w3-biz-item:hover .w3-biz-arrow { color: var(--w3-blue); transform: translateX(6px); }

/* ===== 产品展示 ===== */
.w3-products { padding: 90px 0; background: var(--w3-bg-grey); }
.w3-product-showcase {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-bottom: 48px;
}
.w3-product-item {
    background: #fff;
    border-top: 4px solid var(--w3-blue);
    box-shadow: 0 2px 16px rgba(0, 40, 70, 0.07);
    transition: all 0.3s;
    overflow: hidden;
}
.w3-product-item:hover { transform: translateY(-6px); box-shadow: 0 16px 40px rgba(0, 40, 70, 0.14); }
.w3-product-imgwrap {
    position: relative;
    overflow: hidden;
    height: 220px;
}
.w3-product-imgwrap img {
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}
.w3-product-item:hover .w3-product-imgwrap img { transform: scale(1.06); }
.w3-product-flag {
    position: absolute;
    top: 16px; left: 16px;
    background: var(--w3-gold);
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    padding: 4px 12px;
    letter-spacing: 1px;
}
.w3-product-info { padding: 26px 28px; }
.w3-product-name {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
}
.w3-product-name a { color: var(--w3-text); }
.w3-product-name a:hover { color: var(--w3-blue); }
.w3-product-desc {
    font-size: 13px;
    color: var(--w3-text-mid);
    line-height: 1.7;
    margin-bottom: 18px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.w3-product-link {
    font-size: 13px;
    font-weight: 600;
    color: var(--w3-blue);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap 0.25s;
}
.w3-product-link:hover { gap: 12px; color: var(--w3-blue-dark); }
.w3-products-more { text-align: center; }

/* ===== 新闻动态 ===== */
.w3-news { padding: 90px 0; background: #fff; }
.w3-news-grid {
    display: grid;
    grid-template-columns: 1fr 360px;
    gap: 56px;
    align-items: start;
}
.w3-news-feature-img {
    display: block;
    overflow: hidden;
    margin-bottom: 24px;
}
.w3-news-feature-img img { width: 100%; height: 320px; object-fit: cover; transition: transform 0.5s; }
.w3-news-feature:hover .w3-news-feature-img img { transform: scale(1.04); }
.w3-news-date {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--w3-gold);
    text-transform: uppercase;
    margin-bottom: 10px;
}
.w3-news-date i { margin-right: 6px; }
.w3-news-feature-title {
    font-family: var(--w3-font-serif);
    font-size: 24px;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 14px;
}
.w3-news-feature-title a { color: var(--w3-text); }
.w3-news-feature-title a:hover { color: var(--w3-blue); }
.w3-news-feature-desc {
    font-size: 14px;
    color: var(--w3-text-mid);
    line-height: 1.8;
    margin-bottom: 18px;
}
.w3-news-more {
    font-size: 13px;
    font-weight: 600;
    color: var(--w3-blue);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.w3-news-more:hover { gap: 12px; }

.w3-news-index {
    border-left: 1px solid var(--w3-border);
    padding-left: 40px;
}
.w3-news-index-title {
    font-family: var(--w3-font-serif);
    font-size: 20px;
    font-weight: 700;
    color: var(--w3-text);
    padding-bottom: 16px;
    border-bottom: 3px solid var(--w3-blue);
    margin-bottom: 20px;
}
.w3-news-index-list li { margin-bottom: 16px; }
.w3-news-index-list a {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    color: var(--w3-text-mid);
    font-size: 14px;
    line-height: 1.5;
    transition: color 0.2s;
}
.w3-news-index-list a:hover { color: var(--w3-blue); }
.w3-news-index-date {
    flex-shrink: 0;
    font-size: 12px;
    font-weight: 700;
    color: var(--w3-gold);
    margin-top: 2px;
    min-width: 36px;
}

/* ===== CTA 横幅 ===== */
.w3-cta {
    background: var(--w3-blue-darker);
    padding: 70px 0;
    border-top: 4px solid var(--w3-gold);
}
.w3-cta-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    flex-wrap: wrap;
}
.w3-cta-text h2 {
    font-family: var(--w3-font-serif);
    font-size: 30px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 10px;
}
.w3-cta-text p { font-size: 15px; color: rgba(255,255,255,0.65); margin: 0; }
.w3-cta-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ===== 页脚 ===== */
.w3-footer {
    background: var(--w3-blue-darker);
    color: rgba(255,255,255,0.65);
    border-top: 1px solid rgba(255,255,255,0.1);
}
.w3-footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.2fr;
    gap: 48px;
    padding: 64px 0 48px;
}
.w3-footer-logo { height: 38px; margin-bottom: 18px; }
.w3-footer-desc { font-size: 13px; line-height: 1.8; margin-bottom: 20px; }
.w3-footer-badges { display: flex; flex-wrap: wrap; gap: 8px; }
.w3-footer-badge {
    border: 1px solid rgba(255,255,255,0.25);
    color: rgba(255,255,255,0.6);
    font-size: 12px;
    padding: 3px 10px;
    letter-spacing: 1px;
}
.w3-footer-heading {
    font-size: 15px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 18px;
    padding-bottom: 12px;
    border-bottom: 2px solid rgba(255,255,255,0.12);
    position: relative;
}
.w3-footer-heading::after {
    content: '';
    position: absolute;
    bottom: -2px; left: 0;
    width: 28px; height: 2px;
    background: var(--w3-gold);
}
.w3-footer-links li { margin-bottom: 10px; }
.w3-footer-links a {
    color: rgba(255,255,255,0.55);
    font-size: 13px;
    transition: color 0.2s;
}
.w3-footer-links a:hover { color: #fff; }
.w3-footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 13px;
    margin-bottom: 12px;
    color: rgba(255,255,255,0.55);
}
.w3-footer-contact i { color: var(--w3-gold); margin-top: 3px; flex-shrink: 0; }
.w3-footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    border-top: 1px solid rgba(255,255,255,0.08);
    font-size: 12px;
    color: rgba(255,255,255,0.4);
    flex-wrap: wrap;
    gap: 8px;
}

/* ===== 返回顶部 ===== */
.w3-backtop {
    position: fixed;
    bottom: 48px; right: 32px;
    width: 44px; height: 44px;
    background: var(--w3-blue);
    color: #fff;
    border: none;
    font-size: 18px;
    cursor: pointer;
    opacity: 0;
    transform: translateY(16px);
    transition: all 0.3s;
    z-index: 999;
    box-shadow: 0 4px 16px rgba(0, 92, 151, 0.35);
}
.w3-backtop.is-visible { opacity: 1; transform: translateY(0); }
.w3-backtop:hover { background: var(--w3-blue-dark); }

/* ===== 内页头版 ===== */
.w3-pagehead {
    background: linear-gradient(160deg, var(--w3-blue-darker) 0%, var(--w3-blue-dark) 55%, var(--w3-blue) 100%);
    padding: 56px 0 48px;
    border-bottom: 3px solid var(--w3-gold);
}
.w3-pagehead-title {
    font-family: var(--w3-font-serif);
    font-size: 38px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 16px;
}

/* 面包屑 */
.w3-breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 13px;
    color: rgba(255,255,255,0.55);
}
.w3-breadcrumb a { color: rgba(255,255,255,0.65); }
.w3-breadcrumb a:hover { color: var(--w3-gold-light); }
.w3-breadcrumb-sep { color: rgba(255,255,255,0.3); }
.w3-breadcrumb-current { color: var(--w3-gold-light); }
.w3-breadcrumb i { margin-right: 4px; }

/* ===== 详情页头版 ===== */
.w3-detailhead {
    background: linear-gradient(160deg, var(--w3-blue-darker) 0%, var(--w3-blue-dark) 55%, var(--w3-blue) 100%);
    padding: 56px 0 48px;
    border-bottom: 3px solid var(--w3-gold);
}
.w3-detailhead-meta {
    display: flex;
    align-items: center;
    gap: 24px;
    font-size: 13px;
    color: rgba(255,255,255,0.55);
    margin-bottom: 16px;
    flex-wrap: wrap;
}
.w3-detailhead-meta i { margin-right: 5px; color: var(--w3-gold-light); }
.w3-detailhead-title {
    font-family: var(--w3-font-serif);
    font-size: 36px;
    font-weight: 700;
    color: #fff;
    line-height: 1.35;
    margin-bottom: 18px;
}

/* ===== 专题头版 ===== */
.w3-specialhead {
    position: relative;
    background-size: cover;
    background-position: center;
    padding: 80px 0;
}
.w3-specialhead-mask {
    position: absolute;
    inset: 0;
    background: linear-gradient(160deg, rgba(0,40,70,0.85) 0%, rgba(0,92,151,0.6) 100%);
}
.w3-specialhead .w3-container { position: relative; z-index: 1; }
.w3-specialhead-title {
    font-family: var(--w3-font-serif);
    font-size: 42px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 14px;
}
.w3-specialhead-desc {
    font-size: 16px;
    color: rgba(255,255,255,0.75);
    max-width: 640px;
}

/* ===== 内容网格 ===== */
.w3-content-grid {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 56px;
    padding: 56px 0;
    align-items: start;
}
.w3-content-grid--full { grid-template-columns: 1fr; }

/* ===== 左右分栏布局（左侧导航 + 右侧内容） ===== */
.w3-content-row {
    display: flex;
    gap: 48px;
    padding: 48px 0;
    align-items: flex-start;
}
.w3-col-side {
    flex-shrink: 0;
    width: 260px;
    min-width: 260px;
}
.w3-col-main {
    flex: 1;
    min-width: 0;
}
.w3-channel-group {
    margin-bottom: 36px;
}
.w3-channel-group-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--w3-text);
    padding-bottom: 12px;
    border-bottom: 2px solid var(--w3-border);
    margin-bottom: 20px;
    position: relative;
}
.w3-channel-group-title::after {
    content: '';
    position: absolute;
    bottom: -2px; left: 0;
    width: 36px; height: 2px;
    background: var(--w3-gold);
}
.w3-channel-group-title a { color: var(--w3-text); }
.w3-channel-group-title a:hover { color: var(--w3-blue); }
.w3-empty {
    text-align: center;
    padding: 60px 20px;
    color: var(--w3-text-light);
    font-size: 15px;
}

/* ===== 文章列表项 ===== */
.w3-list .w3-item { margin-bottom: 0; }
.w3-item {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 28px;
    padding: 28px 0;
    border-bottom: 1px solid var(--w3-border);
    transition: background 0.2s;
}
.w3-item:hover { background: var(--w3-bg-grey); }
.w3-item--noimg { grid-template-columns: 1fr; }
.w3-item-img {
    display: block;
    overflow: hidden;
    height: 160px;
}
.w3-item-img img {
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform 0.4s;
}
.w3-item:hover .w3-item-img img { transform: scale(1.05); }
.w3-item-body { display: flex; flex-direction: column; }
.w3-item-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 10px;
    font-size: 12px;
    color: var(--w3-text-light);
    flex-wrap: wrap;
}
.w3-item-cat {
    background: var(--w3-blue-bg);
    color: var(--w3-blue);
    font-size: 11px;
    font-weight: 700;
    padding: 2px 10px;
    letter-spacing: 1px;
    text-transform: uppercase;
}
.w3-item-meta i { margin-right: 4px; }
.w3-item-title {
    font-size: 19px;
    font-weight: 700;
    line-height: 1.45;
    margin-bottom: 10px;
}
.w3-item-title a { color: var(--w3-text); }
.w3-item-title a:hover { color: var(--w3-blue); }
.w3-item-desc {
    font-size: 14px;
    color: var(--w3-text-mid);
    line-height: 1.7;
    margin-bottom: 14px;
    flex: 1;
}
.w3-item-link {
    font-size: 13px;
    font-weight: 600;
    color: var(--w3-blue);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    align-self: flex-start;
    transition: gap 0.25s;
}
.w3-item-link:hover { gap: 12px; color: var(--w3-blue-dark); }

/* ===== 产品卡片网格 ===== */
.w3-pcard-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.w3-pcard {
    background: #fff;
    border-top: 4px solid var(--w3-blue);
    box-shadow: 0 2px 12px rgba(0, 40, 70, 0.07);
    overflow: hidden;
    transition: all 0.3s;
}
.w3-pcard:hover { transform: translateY(-5px); box-shadow: 0 12px 32px rgba(0, 40, 70, 0.13); }
.w3-pcard-img {
    display: block;
    position: relative;
    overflow: hidden;
    height: 200px;
}
.w3-pcard-img img {
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform 0.4s;
}
.w3-pcard:hover .w3-pcard-img img { transform: scale(1.07); }
.w3-pcard-flag {
    position: absolute;
    top: 14px; left: 14px;
    background: var(--w3-gold);
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    padding: 3px 10px;
    letter-spacing: 1px;
}
.w3-pcard-body { padding: 22px 24px; }
.w3-pcard-name {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 8px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.w3-pcard-name a { color: var(--w3-text); }
.w3-pcard-name a:hover { color: var(--w3-blue); }
.w3-pcard-desc {
    font-size: 13px;
    color: var(--w3-text-mid);
    line-height: 1.65;
    margin-bottom: 14px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.w3-pcard-link {
    font-size: 13px;
    font-weight: 600;
    color: var(--w3-blue);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.w3-pcard-link:hover { gap: 12px; }

/* ===== 下载列表 ===== */
.w3-dl-list .w3-dl-item { margin-bottom: 0; }
.w3-dl-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 22px 0;
    border-bottom: 1px solid var(--w3-border);
    transition: background 0.2s;
}
.w3-dl-item:hover { background: var(--w3-bg-grey); }
.w3-dl-icon {
    width: 52px; height: 52px;
    background: var(--w3-blue-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--w3-blue);
    flex-shrink: 0;
}
.w3-dl-body { flex: 1; }
.w3-dl-name { font-size: 16px; font-weight: 700; margin-bottom: 4px; }
.w3-dl-name a { color: var(--w3-text); }
.w3-dl-name a:hover { color: var(--w3-blue); }
.w3-dl-desc { font-size: 13px; color: var(--w3-text-mid); margin: 0; }
.w3-dl-btn {
    padding: 9px 22px;
    background: var(--w3-blue);
    color: #fff;
    font-size: 13px;
    font-weight: 600;
    white-space: nowrap;
    transition: background 0.2s;
}
.w3-dl-btn:hover { background: var(--w3-blue-dark); color: #fff; }

/* ===== 详情文章 ===== */
.w3-article {
    background: #fff;
    padding-bottom: 40px;
}
.w3-article-cover {
    margin-bottom: 32px;
    overflow: hidden;
}
.w3-article-cover img { width: 100%; max-height: 480px; object-fit: cover; }
.w3-article-content {
    font-size: 15px;
    line-height: 1.9;
    color: var(--w3-text);
}
.w3-article-content img { max-width: 100%; margin: 20px 0; }
.w3-article-content h2,
.w3-article-content h3,
.w3-article-content h4 {
    font-family: var(--w3-font-serif);
    color: var(--w3-blue-dark);
    font-weight: 700;
    margin: 32px 0 14px;
}
.w3-article-content h2 { font-size: 24px; }
.w3-article-content h3 { font-size: 20px; }
.w3-article-content h4 { font-size: 17px; }
.w3-article-content p { margin-bottom: 18px; }
.w3-article-content blockquote {
    border-left: 4px solid var(--w3-gold);
    background: var(--w3-blue-bg);
    padding: 16px 22px;
    margin: 24px 0;
    font-style: italic;
    color: var(--w3-text-mid);
}
.w3-article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    font-size: 14px;
}
.w3-article-content th {
    background: var(--w3-blue);
    color: #fff;
    padding: 12px 16px;
    font-weight: 600;
    text-align: left;
}
.w3-article-content td {
    padding: 11px 16px;
    border: 1px solid var(--w3-border);
}
.w3-article-content tr:nth-child(even) td { background: var(--w3-bg-grey); }

/* 频道描述 */
.w3-channel-desc {
    font-size: 15px;
    color: var(--w3-text-mid);
    line-height: 1.9;
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--w3-border);
}

/* 分享 */
.w3-share {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 20px 0;
    border-top: 1px solid var(--w3-border);
    margin-top: 32px;
    font-size: 14px;
    color: var(--w3-text-mid);
}

/* 元信息（标签/上一篇下一篇） */
.w3-metainfo { margin-top: 8px; }
.w3-metainfo-tags {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    padding: 16px 0;
    border-top: 1px solid var(--w3-border);
    font-size: 14px;
}
.w3-metainfo-label { color: var(--w3-text-mid); }
.w3-metainfo-label i { margin-right: 4px; color: var(--w3-gold); }
.w3-tag-item {
    padding: 4px 14px;
    border: 1px solid var(--w3-border);
    color: var(--w3-text-mid);
    font-size: 13px;
    transition: all 0.2s;
}
.w3-tag-item:hover {
    background: var(--w3-blue);
    border-color: var(--w3-blue);
    color: #fff;
}
.w3-metainfo-nav {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    margin-top: 8px;
    padding-top: 20px;
    border-top: 1px solid var(--w3-border);
}
.w3-metainfo-prev,
.w3-metainfo-next {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--w3-text-mid);
    max-width: 48%;
    padding: 12px 16px;
    background: var(--w3-bg-grey);
    transition: all 0.22s;
}
.w3-metainfo-prev:hover,
.w3-metainfo-next:hover { background: var(--w3-blue-bg); color: var(--w3-blue); }
.w3-metainfo-next { margin-left: auto; }

/* 相关推荐 */
.w3-related { margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--w3-border); }
.w3-related-title {
    font-family: var(--w3-font-serif);
    font-size: 20px;
    font-weight: 700;
    color: var(--w3-text);
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 3px solid var(--w3-blue);
    display: inline-block;
}
.w3-related-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}
.w3-related-item {
    display: flex;
    flex-direction: column;
    gap: 10px;
    transition: all 0.22s;
}
.w3-related-item:hover .w3-related-name { color: var(--w3-blue); }
.w3-related-img {
    overflow: hidden;
    height: 120px;
}
.w3-related-img img {
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform 0.4s;
}
.w3-related-item:hover .w3-related-img img { transform: scale(1.06); }
.w3-related-name {
    font-size: 13px;
    color: var(--w3-text-mid);
    line-height: 1.5;
    transition: color 0.2s;
}

/* 产品详情布局 */
.w3-product-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    margin-bottom: 40px;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--w3-border);
}
.w3-product-mainimg {
    overflow: hidden;
    border: 1px solid var(--w3-border);
}
.w3-product-mainimg img { width: 100%; height: 340px; object-fit: cover; }
.w3-product-thumbs {
    display: flex;
    gap: 10px;
    margin-top: 12px;
    flex-wrap: wrap;
}
.w3-thumb-item {
    width: 72px; height: 72px;
    overflow: hidden;
    border: 2px solid var(--w3-border);
    cursor: pointer;
    transition: border-color 0.2s;
}
.w3-thumb-item.is-active,
.w3-thumb-item:hover { border-color: var(--w3-blue); }
.w3-thumb-item img { width: 100%; height: 100%; object-fit: cover; }
.w3-product-meta {
    display: flex;
    gap: 20px;
    font-size: 13px;
    color: var(--w3-text-light);
    margin-bottom: 20px;
    flex-wrap: wrap;
}
.w3-product-meta i { margin-right: 4px; }
.w3-product-summary h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--w3-text);
    margin-bottom: 10px;
}
.w3-product-summary p {
    font-size: 14px;
    color: var(--w3-text-mid);
    line-height: 1.8;
    margin-bottom: 24px;
}

/* 下载地址框 */
.w3-download-box {
    margin-top: 32px;
    padding: 24px 28px;
    background: var(--w3-blue-bg);
    border-left: 4px solid var(--w3-blue);
}
.w3-download-box-title {
    font-size: 17px;
    font-weight: 700;
    color: var(--w3-blue-dark);
    margin-bottom: 16px;
}
.w3-download-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 22px;
    background: var(--w3-blue);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    margin-right: 12px;
    margin-bottom: 10px;
    transition: background 0.2s;
}
.w3-download-btn:hover { background: var(--w3-blue-dark); color: #fff; }
.w3-download-btn em { font-style: normal; font-size: 12px; opacity: 0.8; }

/* ===== 侧边栏 ===== */
.w3-sidebar .w3-widget {
    background: #fff;
    border: 1px solid var(--w3-border);
    padding: 26px;
    margin-bottom: 24px;
}
.w3-widget-title {
    font-family: var(--w3-font-serif);
    font-size: 17px;
    font-weight: 700;
    color: var(--w3-text);
    padding-bottom: 14px;
    border-bottom: 2px solid var(--w3-border);
    margin-bottom: 18px;
    position: relative;
}
.w3-widget-title::after {
    content: '';
    position: absolute;
    bottom: -2px; left: 0;
    width: 32px; height: 2px;
    background: var(--w3-gold);
}
.w3-widget-nav li { margin-bottom: 2px; }
.w3-widget-nav a {
    display: block;
    padding: 10px 14px;
    font-size: 14px;
    color: var(--w3-text-mid);
    border-left: 3px solid transparent;
    transition: all 0.2s;
}
.w3-widget-nav a:hover,
.w3-widget-nav li.is-active a {
    background: var(--w3-blue-bg);
    color: var(--w3-blue);
    border-left-color: var(--w3-gold);
}
.w3-widget-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 10px 0;
    border-bottom: 1px solid var(--w3-border);
}
.w3-widget-list li:last-child { border-bottom: none; padding-bottom: 0; }
.w3-widget-rank {
    flex-shrink: 0;
    width: 24px; height: 24px;
    background: var(--w3-bg-grey);
    color: var(--w3-text-light);
    font-size: 12px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 1px;
}
.w3-widget-list li:nth-child(-n+3) .w3-widget-rank {
    background: var(--w3-blue);
    color: #fff;
}
.w3-widget-list a {
    font-size: 14px;
    color: var(--w3-text-mid);
    line-height: 1.5;
    transition: color 0.2s;
    flex: 1;
}
.w3-widget-list a:hover { color: var(--w3-blue); }
.w3-widget-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.w3-widget-tags a {
    padding: 4px 14px;
    border: 1px solid var(--w3-border);
    font-size: 13px;
    color: var(--w3-text-mid);
    transition: all 0.2s;
}
.w3-widget-tags a:hover {
    background: var(--w3-blue);
    border-color: var(--w3-blue);
    color: #fff;
}

/* ===== 分页 ===== */
.w3-pager { margin-top: 48px; text-align: center; }
.w3-pager .pagination { display: inline-flex; gap: 6px; }
.w3-pager .pagination > li > a,
.w3-pager .pagination > li > span {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px; height: 40px;
    padding: 0 14px;
    border: 1px solid var(--w3-border);
    color: var(--w3-text-mid);
    font-size: 14px;
    border-radius: 0 !important;
    background: #fff;
    transition: all 0.2s;
}
.w3-pager .pagination > li > a:hover {
    background: var(--w3-blue);
    border-color: var(--w3-blue);
    color: #fff;
}
.w3-pager .pagination > li.active > a,
.w3-pager .pagination > li.active > span {
    background: var(--w3-blue);
    border-color: var(--w3-blue);
    color: #fff;
    font-weight: 700;
}

/* ===== 搜索页 ===== */
.w3-searchbar {
    display: flex;
    gap: 0;
    margin-bottom: 28px;
}
.w3-searchbar-input {
    flex: 1;
    border: 2px solid var(--w3-border);
    border-right: none;
    height: 48px;
    padding: 0 18px;
    font-size: 15px;
    outline: none;
    color: var(--w3-text);
    transition: border-color 0.2s;
}
.w3-searchbar-input:focus { border-color: var(--w3-blue); }
.w3-searchbar .w3-btn-main { height: 48px; padding: 0 28px; border-width: 2px; }
.w3-search-result-info {
    background: var(--w3-blue-bg);
    border-left: 4px solid var(--w3-blue);
    padding: 14px 20px;
    font-size: 14px;
    color: var(--w3-text-mid);
    margin-bottom: 28px;
}
.w3-search-result-info strong { color: var(--w3-blue); }

/* ===== 自定义表单（扩展） ===== */
.w3-item-status {
    background: #e53e3e;
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    padding: 2px 8px;
    letter-spacing: 1px;
}
.w3-item-imgs {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 12px;
}
.w3-item-imgs a { display: block; overflow: hidden; }
.w3-item-imgs img {
    width: 90px; height: 90px;
    object-fit: cover;
    transition: transform 0.3s;
}
.w3-item-imgs a:hover img { transform: scale(1.06); }
.w3-filter-group {
    background: var(--w3-bg-grey);
    border: 1px solid var(--w3-border);
    padding: 20px 24px;
    margin-bottom: 28px;
}
.w3-filter-group-row {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 14px;
    flex-wrap: wrap;
}
.w3-filter-group-row:last-child { margin-bottom: 0; }
.w3-filter-group-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--w3-text);
    white-space: nowrap;
    padding-top: 2px;
}
.w3-filter-group-items {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.w3-filter-group-items li a {
    display: inline-block;
    padding: 4px 14px;
    font-size: 13px;
    color: var(--w3-text-mid);
    border: 1px solid var(--w3-border);
    background: #fff;
    transition: all 0.2s;
}
.w3-filter-group-items li.is-active a,
.w3-filter-group-items li a:hover {
    background: var(--w3-blue);
    border-color: var(--w3-blue);
    color: #fff;
}
.w3-diy-show-field {
    display: flex;
    gap: 16px;
    padding: 14px 0;
    border-bottom: 1px solid var(--w3-border);
    align-items: flex-start;
}
.w3-diy-show-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--w3-text-mid);
    white-space: nowrap;
    min-width: 90px;
}
.w3-diy-show-value {
    font-size: 14px;
    color: var(--w3-text);
    flex: 1;
    line-height: 1.7;
}
.w3-diy-show-imgs {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}
.w3-diy-show-imgs img {
    width: 120px; height: 120px;
    object-fit: cover;
    transition: transform 0.3s;
}
.w3-diy-show-imgs a:hover img { transform: scale(1.04); }
.w3-diy-show-actions {
    display: flex;
    gap: 14px;
    margin-top: 28px;
    padding-top: 24px;
    border-top: 1px solid var(--w3-border);
    flex-wrap: wrap;
}

/* ===== 自定义表单（原有） ===== */
.w3-diyform-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 28px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--w3-border);
    flex-wrap: wrap;
}
.w3-diyform-desc { font-size: 14px; color: var(--w3-text-mid); margin: 0; }
.w3-filterbar {
    display: flex;
    gap: 10px;
    margin-bottom: 28px;
    flex-wrap: wrap;
}
.w3-filterbar-input {
    border: 1px solid var(--w3-border);
    height: 42px;
    padding: 0 14px;
    font-size: 14px;
    outline: none;
    color: var(--w3-text);
    flex: 1;
    min-width: 200px;
    transition: border-color 0.2s;
}
.w3-filterbar-input:focus { border-color: var(--w3-blue); }
.w3-formcard {
    background: #fff;
    border: 1px solid var(--w3-border);
    border-top: 4px solid var(--w3-blue);
    padding: 40px 44px;
}
.w3-formcard-desc {
    font-size: 14px;
    color: var(--w3-text-mid);
    margin-bottom: 28px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--w3-border);
}
.w3-form-group { margin-bottom: 22px; }
.w3-form-label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--w3-text);
    margin-bottom: 8px;
}
.w3-required { color: #e53e3e; font-style: normal; margin-left: 3px; }
.w3-form-group .form-control {
    width: 100%;
    border: 1px solid var(--w3-border);
    height: 44px;
    padding: 0 14px;
    font-size: 14px;
    color: var(--w3-text);
    outline: none;
    transition: border-color 0.2s;
    border-radius: 0;
    box-shadow: none;
}
.w3-form-group textarea.form-control { height: auto; padding: 10px 14px; }
.w3-form-group .form-control:focus { border-color: var(--w3-blue); }
.w3-diy-show-field {
    display: flex;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--w3-border);
    font-size: 14px;
}
.w3-diy-show-label { color: var(--w3-text-mid); white-space: nowrap; }
.w3-diy-show-value { color: var(--w3-text); }
.w3-diy-show-meta {
    margin-top: 20px;
    font-size: 13px;
    color: var(--w3-text-light);
}
.w3-diy-show-meta i { margin-right: 5px; }

/* ===== 评论区 ===== */
.w3-comment-empty {
    text-align: center;
    padding: 32px 16px;
    color: var(--w3-text-light);
    font-size: 14px;
    border-bottom: 1px solid var(--w3-border);
}
.w3-comment-pager { margin: 20px 0; }
.w3-comment-loginbtns { display: flex; gap: 12px; }
.w3-comment-actions { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
.w3-comment-subscribe { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--w3-text-mid); cursor: pointer; }
.w3-comment-cancelreply small { font-size: 12px; color: var(--w3-text-light); margin-left: 8px; }
.w3-comment-cancelreply:hover small { color: var(--w3-blue); }

/* ===== 单页元信息 ===== */
.w3-page-metas {
    display: flex;
    align-items: center;
    gap: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--w3-border);
    margin-bottom: 28px;
    font-size: 13px;
    color: var(--w3-text-light);
    flex-wrap: wrap;
}
.w3-page-metas i { margin-right: 5px; color: var(--w3-gold); }
.w3-page-like {
    text-align: center;
    margin-top: 36px;
    padding-top: 28px;
    border-top: 1px solid var(--w3-border);
}

/* ===== 评论区（原有） ===== */
.w3-comments {
    margin-top: 40px;
    border-top: 2px solid var(--w3-border);
    padding-top: 32px;
}
.w3-comments-title {
    font-family: var(--w3-font-serif);
    font-size: 20px;
    font-weight: 700;
    color: var(--w3-text);
    margin-bottom: 24px;
}
.w3-comments-title small { font-size: 14px; color: var(--w3-text-light); font-weight: 400; }
.w3-comment-formbox { margin-bottom: 28px; }
.w3-comment-textarea {
    width: 100%;
    border: 1px solid var(--w3-border);
    padding: 14px;
    font-size: 14px;
    color: var(--w3-text);
    resize: vertical;
    outline: none;
    margin-bottom: 12px;
    transition: border-color 0.2s;
}
.w3-comment-textarea:focus { border-color: var(--w3-blue); }
.w3-comment-tip { font-size: 14px; color: var(--w3-text-mid); }
.w3-comment-tip a { color: var(--w3-blue); }
.w3-comment-item {
    display: flex;
    gap: 14px;
    padding: 18px 0;
    border-bottom: 1px solid var(--w3-border);
}
.w3-comment-item:last-child { border-bottom: none; }
.w3-comment-avatar {
    width: 42px; height: 42px;
    border-radius: 50%;
    overflow: hidden;
    flex-shrink: 0;
    background: var(--w3-blue-bg);
}
.w3-comment-avatar img { width: 100%; height: 100%; object-fit: cover; }
.w3-comment-author { font-size: 14px; font-weight: 700; color: var(--w3-text); margin-bottom: 4px; }
.w3-comment-content { font-size: 14px; color: var(--w3-text-mid); line-height: 1.7; }
.w3-comment-meta {
    display: flex;
    gap: 16px;
    font-size: 12px;
    color: var(--w3-text-light);
    margin-top: 8px;
}
.w3-comment-meta a { color: var(--w3-blue); }

/* ===== 响应式 ===== */
@media (max-width: 1199px) {
    .w3-hero-slider, .w3-hero-slide { height: 520px; }
    .w3-hero-title { font-size: 46px; }
    .w3-metrics-row { grid-template-columns: repeat(4, 1fr); }
    .w3-metric-num { font-size: 42px; }
    .w3-about-grid { gap: 48px; }
    .w3-biz-item { grid-template-columns: 60px 1fr 72px 40px; gap: 20px; }
    .w3-biz-num { font-size: 38px; }
    .w3-footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
}

@media (max-width: 991px) {
    .w3-hero-slider, .w3-hero-slide { height: 480px; }
    .w3-hero-title { font-size: 38px; }
    .w3-hero-sub { font-size: 15px; }
    .w3-metric-num { font-size: 36px; }
    .w3-metrics-row { grid-template-columns: repeat(2, 1fr); }
    .w3-metric { border-right: none; border-bottom: 1px solid rgba(255,255,255,0.1); padding: 16px 20px; }
    .w3-metric:nth-child(odd) { border-right: 1px solid rgba(255,255,255,0.1); }
    .w3-metric:nth-child(n+3) { border-bottom: none; }

    .w3-about-grid { grid-template-columns: 1fr; gap: 48px; }
    .w3-about-frame img { height: 300px; }
    .w3-about-years { right: 0; }

    .w3-biz-item { grid-template-columns: 48px 1fr 48px 36px; gap: 16px; }
    .w3-biz-num { font-size: 30px; }
    .w3-biz-icon { width: 48px; height: 48px; font-size: 20px; }

    .w3-product-showcase { grid-template-columns: 1fr 1fr; }
    .w3-news-grid { grid-template-columns: 1fr; gap: 40px; }
    .w3-news-index { border-left: none; padding-left: 0; border-top: 1px solid var(--w3-border); padding-top: 32px; }

    .w3-content-grid { grid-template-columns: 1fr; gap: 40px; }
    .w3-content-aside { display: none; }

    .w3-cta-inner { flex-direction: column; align-items: flex-start; }
    .w3-footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }

    .w3-product-layout { grid-template-columns: 1fr; gap: 28px; }
    .w3-related-grid { grid-template-columns: repeat(2, 1fr); }
    .w3-pcard-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 767px) {
    .w3-container { padding: 0 16px; }
    .w3-utility { display: none; }
    .w3-header-inner { height: 64px; }
    .w3-logo img { height: 36px; }
    .w3-search { display: none; }

    .w3-hero-slider, .w3-hero-slide { height: 420px; }
    .w3-hero-title { font-size: 30px; }
    .w3-hero-sub { font-size: 14px; margin-bottom: 28px; }
    .w3-hero-scrolltip { display: none; }
    .w3-hero-body { padding: 40px 0; }

    .w3-metrics { padding: 28px 0; }
    .w3-metric-num { font-size: 30px; }
    .w3-metric-label { font-size: 12px; }

    .w3-sec-title { font-size: 26px; }
    .w3-sec-head { margin-bottom: 36px; }

    .w3-about, .w3-business, .w3-products, .w3-news { padding: 56px 0; }
    .w3-about-frame img { height: 220px; }
    .w3-about-years { padding: 16px 20px; }
    .w3-about-years-num { font-size: 40px; }

    .w3-biz-item { grid-template-columns: 40px 1fr 36px; padding: 20px 0; }
    .w3-biz-icon { display: none; }
    .w3-biz-num { font-size: 26px; }
    .w3-biz-title { font-size: 17px; }
    .w3-biz-desc { font-size: 13px; }

    .w3-product-showcase { grid-template-columns: 1fr; }
    .w3-pcard-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
    .w3-pcard-body { padding: 16px; }

    .w3-item { grid-template-columns: 1fr; gap: 14px; padding: 20px 0; }
    .w3-item-img { height: 180px; }
    .w3-item-title { font-size: 17px; }

    .w3-pagehead { padding: 36px 0 32px; }
    .w3-pagehead-title { font-size: 26px; }
    .w3-detailhead-title { font-size: 24px; }
    .w3-detailhead { padding: 36px 0 32px; }
    .w3-specialhead { padding: 48px 0; }
    .w3-specialhead-title { font-size: 28px; }

    .w3-content-grid { padding: 36px 0; }
    .w3-content-row { padding: 36px 0; }
    .w3-col-side { width: 100%; min-width: 0; }

    .w3-formcard { padding: 28px 20px; }
    .w3-metainfo-nav { flex-direction: column; }
    .w3-metainfo-prev, .w3-metainfo-next { max-width: 100%; }
    .w3-related-grid { grid-template-columns: repeat(2, 1fr); }

    .w3-footer-grid { grid-template-columns: 1fr; gap: 28px; padding: 40px 0 28px; }
    .w3-footer-bottom { flex-direction: column; gap: 4px; text-align: center; }

    .w3-backtop { right: 16px; bottom: 24px; width: 38px; height: 38px; }
    .w3-dl-item { flex-wrap: wrap; gap: 12px; }
    .w3-dl-btn { width: 100%; text-align: center; justify-content: center; }
    .w3-comment-item { gap: 10px; }
}

@media (max-width: 480px) {
    .w3-hero-title { font-size: 24px; }
    .w3-metric-num { font-size: 24px; }
    .w3-sec-title { font-size: 22px; }
    .w3-product-showcase { grid-template-columns: 1fr; }
    .w3-pcard-grid { grid-template-columns: 1fr; }
    .w3-related-grid { grid-template-columns: 1fr; }
}