/* ========== 基础重置 ========== */
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: #333;
    background: #fff;
    -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
img { display: block; max-width: 100%; border: 0; }
button, input, textarea, select { font-family: inherit; outline: none; }
.container { max-width: 1300px; margin: 0 auto; padding: 0 5px; }

/* ========== 主色调 ========== */
:root {
    --primary: #0157C6;
    --primary-dark: #013E8F;
    --primary-deep: #012A5E;
    --primary-light: #E8F0FE;
    --gold: #C9A84C;
    --gold-light: #E8CE94;
    --soft-bg: #F5F9FF;
    --soft-bg2: #EEF4FE;
    --line: #E6EEFA;
    --radius: 10px;
    --shadow-sm: 0 2px 10px rgba(1, 60, 140, .05);
    --shadow-md: 0 10px 34px rgba(1, 60, 140, .09);
    --shadow-lg: 0 18px 48px rgba(1, 60, 140, .16);
    --red: #D03030;
    --green: #1E9E58;
}

/* ========== 顶部辅助条 ========== */
.topbar {
    height: 36px; line-height: 36px;
    background: var(--soft-bg2);
    font-size: 12px; color: #555;
}
.topbar .container { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.topbar-text { color: #6E80A0; letter-spacing: .5px; }
.topbar-links { display: flex; align-items: center; flex-wrap: wrap; }
.topbar-links a { color: #555; padding: 0 8px; transition: color .2s; }
.topbar-links a:hover { color: var(--primary); }
.topbar-links a.on { color: var(--primary); font-weight: 700; }
.topbar-links .sep { display: inline-block; width: 1px; height: 12px; background: #C5D4E8; margin: 0 4px; }

/* ========== 头部标识区 ========== */
.header {
    position: relative;
    padding: 18px 0;
    background: linear-gradient(120deg, #F4F8FF 0%, #E8F0FE 45%, #DCE8FB 100%);
    overflow: hidden;
}
.header::before {
    content: ""; position: absolute; inset: 0;
    background:
        radial-gradient(50% 120% at 88% 15%, rgba(1, 87, 198, .08) 0%, transparent 65%),
        radial-gradient(40% 120% at 5% 90%, rgba(201, 168, 76, .07) 0%, transparent 65%);
    pointer-events: none;
}
.header::after {
    content: ""; position: absolute; inset: 0;
    background-image:
        linear-gradient(90deg, rgba(1,87,198,.03) 1px, transparent 1px),
        linear-gradient(0deg, rgba(1,87,198,.03) 1px, transparent 1px);
    background-size: 42px 42px;
    pointer-events: none;
    mask-image: linear-gradient(90deg, transparent 0%, #000 30%, #000 70%, transparent 100%);
    -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 30%, #000 70%, transparent 100%);
}
.header .container {
    position: relative; z-index: 2;
    display: flex; align-items: center; justify-content: space-between;
    flex-wrap: wrap; gap: 16px;
}
.brand { display: flex; align-items: center; gap: 18px; flex-shrink: 0; }
.brand .logo-img {
    max-height: 88px; width: auto; max-width: 480px;
    object-fit: contain; display: block; transition: opacity .2s;
}
.brand .logo-img:hover { opacity: .88; }
.brand .logo-img.mobile-logo { display: none; }
.brand .logo-img.pc-logo { display: block; }

.header-right { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.search {
    display: flex; align-items: center; height: 44px;
    border-radius: 22px; overflow: hidden;
    background: #fff; box-shadow: var(--shadow-sm);
    transition: box-shadow .25s; min-width: 240px;
}
.search:focus-within { box-shadow: 0 0 0 3px rgba(1, 87, 198, .14), var(--shadow-md); }
.search input {
    width: 240px; height: 100%; border: none;
    padding: 0 8px 0 20px; font-size: 13.5px; color: #333;
    background: transparent;
}
.search input::placeholder { color: #A8B8D0; }
.search button {
    width: 58px; height: 100%; border: none;
    background: var(--primary); color: #fff;
    cursor: pointer; display: flex; align-items: center; justify-content: center;
    transition: background .2s;
}
.search button:hover { background: var(--primary-dark); }

.auth-buttons { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.auth-btn {
    display: inline-flex; align-items: center; justify-content: center;
    height: 40px; padding: 0 20px; border-radius: 22px;
    font-size: 13.5px; font-weight: 600; letter-spacing: .5px;
    transition: all .25s ease; white-space: nowrap;
    cursor: pointer; border: none; text-decoration: none;
}
.auth-btn-login {
    background: transparent; color: var(--primary);
    border: 1.5px solid var(--primary);
}
.auth-btn-login:hover { background: var(--primary-light); transform: translateY(-1px); }
.auth-btn-register {
    background: var(--primary); color: #fff;
    box-shadow: 0 6px 16px rgba(1, 87, 198, .22);
}
.auth-btn-register:hover {
    background: var(--primary-dark); transform: translateY(-1px);
    box-shadow: 0 8px 22px rgba(1, 87, 198, .3);
}

.mobile-more {
    display: none; align-items: center; gap: 6px;
    padding: 8px 16px; background: var(--primary); color: #fff;
    border: none; border-radius: 22px;
    font-size: 14px; font-weight: 600; letter-spacing: .5px;
    cursor: pointer; transition: background .2s; white-space: nowrap;
}
.mobile-more:hover { background: var(--primary-dark); }
.mobile-more .more-icon { display: flex; flex-direction: column; gap: 3px; }
.mobile-more .more-icon i { display: block; width: 16px; height: 2px; background: #fff; border-radius: 1px; }

/* ========== 频道导航 ========== */
.nav {
    background: var(--primary);
    box-shadow: 0 8px 22px rgba(1, 60, 140, .18);
    position: relative; z-index: 100;
}
.nav .container { display: flex; align-items: stretch; padding: 0; position: relative; }
.nav-toggle { display: none; }
.nav-menu { display: flex; flex: 1; align-items: stretch; }
.nav-item {
    position: relative; flex: 1 1 0; display: flex;
    align-items: stretch; min-width: 0;
}
.nav-item > a {
    position: relative; display: flex; align-items: center; justify-content: center;
    gap: 5px; width: 100%; min-height: 56px; padding: 0 6px;
    color: #fff; font-size: 14.5px; letter-spacing: .5px;
    white-space: nowrap; transition: background .2s;
}
.nav-item > a .caret {
    display: inline-block; width: 0; height: 0;
    border-left: 4px solid transparent; border-right: 4px solid transparent;
    border-top: 5px solid rgba(255,255,255,.75);
    transition: transform .25s; flex-shrink: 0;
}
.nav-item:hover > a .caret { transform: rotate(180deg); }
.nav-item > a::after {
    content: ""; position: absolute; left: 50%; bottom: 0;
    width: 100%; height: 3px; background: var(--gold);
    transform: translateX(-50%) scaleX(0);
    transition: transform .25s ease;
}
.nav-item:hover > a { background: rgba(0, 0, 0, .14); }
.nav-item:hover > a::after,
.nav-item > a.active::after { transform: translateX(-50%) scaleX(1); }
.nav-item > a.active { background: rgba(0, 0, 0, .14); font-weight: 700; }

.dropdown {
    position: absolute; top: 100%; left: 50%;
    transform: translateX(-50%) translateY(10px);
    min-width: 130px; background: #fff;
    border-radius: 0 0 var(--radius) var(--radius);
    box-shadow: var(--shadow-lg); padding: 8px 0;
    opacity: 0; visibility: hidden;
    transition: opacity .24s ease, transform .24s ease, visibility .24s;
    z-index: 200; overflow: hidden;
}
.dropdown::before {
    content: ""; position: absolute; top: 0; left: 0; right: 0;
    height: 3px; background: linear-gradient(90deg, var(--gold), var(--primary));
}
.nav-item:hover .dropdown { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.dropdown li a {
    display: block; padding: 9px 22px; font-size: 13.5px; color: #445;
    white-space: nowrap;
    transition: background .18s, color .18s, padding-left .18s;
}
.dropdown li a:hover { background: var(--primary-light); color: var(--primary); padding-left: 27px; }

/* ========== 面包屑 ========== */
.breadcrumb-bar { background: #fff; border-bottom: 1px solid var(--line); }
.breadcrumb-bar .container {
    display: flex; align-items: center; height: 52px;
    font-size: 13.5px; color: #8A9BB8; gap: 6px;
    flex-wrap: wrap; padding-left: 5px;
}
.breadcrumb-bar a { color: #6A7A94; transition: color .2s; }
.breadcrumb-bar a:hover { color: var(--primary); }
.breadcrumb-bar .bc-sep { color: #C5D4E8; margin: 0 2px; }
.breadcrumb-bar .bc-current { color: var(--primary); font-weight: 600; }

/* ========== 主内容布局 ========== */
.main-wrap { background: var(--soft-bg); padding: 34px 0 50px; }
.main-layout {
    display: grid; grid-template-columns: 260px 1fr;
    gap: 30px; align-items: start;
}

/* ========== 左侧子导航 ========== */
.sidebar-nav {
    background: #fff; border-radius: 16px;
    box-shadow: var(--shadow-sm); overflow: hidden;
    position: sticky; top: 20px;
}
.sidebar-nav-head {
    padding: 22px 24px 18px;
    background: linear-gradient(120deg, #076CE5 0%, #0770F6 100%);
    color: #fff; position: relative; overflow: hidden;
}
.sidebar-nav-head::before {
    content: ""; position: absolute; inset: 0;
    background:
        radial-gradient(60% 120% at 88% 10%, rgba(201,168,76,.22), transparent 62%),
        repeating-linear-gradient(90deg, rgba(255,255,255,.05) 0 1px, transparent 1px 40px);
    pointer-events: none;
}
.sidebar-nav-head h2 {
    position: relative; z-index: 2;
    font-family: "Source Han Serif SC", "Noto Serif SC", SimSun, serif;
    font-size: 22px; font-weight: 700; letter-spacing: 3px;
    line-height: 1.4; margin-bottom: 6px;
}
.sidebar-nav-head .en {
    position: relative; z-index: 2;
    font-size: 11px; letter-spacing: 1.5px;
    color: rgba(255,255,255,.55); text-transform: uppercase;
}
.sidebar-menu { padding: 10px 0 14px; }
.sidebar-menu li { position: relative; }
.sidebar-menu li a {
    position: relative; display: flex; align-items: center;
    justify-content: space-between; gap: 8px;
    padding: 14px 24px; font-size: 15px; color: #445;
    letter-spacing: .5px; transition: all .22s ease;
}
.sidebar-menu li a::before {
    content: ""; position: absolute; left: 0; top: 50%;
    transform: translateY(-50%) scaleY(0);
    width: 3px; height: 18px;
    background: linear-gradient(180deg, var(--gold), var(--primary));
    border-radius: 0 2px 2px 0; transition: transform .22s ease;
}
.sidebar-menu li a:hover { background: var(--soft-bg); color: var(--primary); padding-left: 30px; }
.sidebar-menu li a:hover::before { transform: translateY(-50%) scaleY(1); }
.sidebar-menu li a.active {
    background: var(--primary-light); color: var(--primary);
    font-weight: 700; padding-left: 30px;
}
.sidebar-menu li a.active::before { transform: translateY(-50%) scaleY(1); }
.sidebar-menu li a .arrow {
    font-size: 12px; color: #B0C0D8;
    transition: transform .22s ease, color .22s;
}
.sidebar-menu li a:hover .arrow { transform: translateX(3px); color: var(--primary); }
.sidebar-menu li a.active .arrow { color: var(--primary); }

.sidebar-contact {
    margin: 4px 16px 18px; padding: 18px;
    border-radius: 12px;
    background: linear-gradient(135deg, #F4F8FF 0%, #EAF1FE 100%);
    border: 1px solid var(--line);
}
.sidebar-contact .sc-title {
    font-size: 13px; font-weight: 700; color: var(--primary-dark);
    letter-spacing: 1px; margin-bottom: 10px;
    display: flex; align-items: center; gap: 6px;
}
.sidebar-contact .sc-title svg { width: 15px; height: 15px; }
.sidebar-contact p { font-size: 12.5px; line-height: 1.9; color: #6A7A94; }
.sidebar-contact p b { color: var(--primary-dark); font-weight: 600; }

/* ========== 右侧内容区 ========== */
.content-panel {
    background: #fff; border-radius: 16px;
    box-shadow: var(--shadow-sm); overflow: hidden; min-width: 0;
}
.content-head {
    padding: 26px 36px 22px;
    border-bottom: 1px solid var(--line);
    position: relative;
}
.content-head::before {
    content: ""; position: absolute; left: 36px; bottom: -1px;
    width: 56px; height: 3px;
    background: linear-gradient(90deg, var(--gold), var(--primary));
    border-radius: 2px;
}
.content-head h1 {
    font-family: "Source Han Serif SC", "Noto Serif SC", SimSun, serif;
    font-size: 26px; font-weight: 700; letter-spacing: 2px;
    color: var(--primary-dark); line-height: 1.4; margin-bottom: 8px;
}
.content-head .content-sub {
    font-size: 13.5px; color: #8A9BB8; letter-spacing: .5px;
    display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
}
.content-head .content-sub .tag {
    display: inline-block; padding: 2px 10px;
    background: var(--primary-light); color: var(--primary);
    font-size: 12px; font-weight: 600; border-radius: 3px;
    letter-spacing: .5px;
}
.content-body { padding: 30px 36px 40px; }

.rich-text p {
    font-size: 15px; line-height: 2.05; color: #445;
    margin-bottom: 18px; text-align: justify;
    text-justify: inter-ideograph; letter-spacing: .2px;
}
.rich-text p:last-child { margin-bottom: 0; }
.rich-text .lead {
    font-size: 16px; color: #2A3A54; font-weight: 500;
    padding-left: 18px; border-left: 4px solid var(--gold);
    background: linear-gradient(90deg, #FBF8F0 0%, transparent 90%);
    padding-top: 4px; padding-bottom: 4px;
    margin-bottom: 24px; line-height: 1.9;
}

/* ========== 白皮书信息卡片 ========== */
.whitepaper-hero {
    position: relative;
    display: flex; gap: 26px;
    padding: 26px 28px;
    border-radius: 14px;
    background: linear-gradient(135deg, #F2F8FF 0%, #E6F0FE 100%);
    border: 1px solid #DCE9FB;
    margin-bottom: 26px;
    overflow: hidden;
}
.whitepaper-hero::before {
    content: ""; position: absolute; right: -40px; top: -40px;
    width: 180px; height: 180px; border-radius: 50%;
    background: radial-gradient(circle, rgba(1,87,198,.08) 0%, transparent 70%);
    pointer-events: none;
}
.whitepaper-hero .wh-icon {
    flex-shrink: 0;
    width: 64px; height: 64px;
    border-radius: 16px;
    background: linear-gradient(140deg, var(--primary) 0%, #1E7BF0 100%);
    color: #fff;
    display: flex; align-items: center; justify-content: center;
    box-shadow: 0 10px 24px rgba(1, 87, 198, .28);
}
.whitepaper-hero .wh-icon svg { width: 30px; height: 30px; }
.whitepaper-hero .wh-info { min-width: 0; }
.whitepaper-hero .wh-info h2 {
    font-family: "Source Han Serif SC", "Noto Serif SC", SimSun, serif;
    font-size: 21px; font-weight: 700; letter-spacing: 1px;
    color: var(--primary-dark); margin-bottom: 8px; line-height: 1.4;
}
.whitepaper-hero .wh-info .wh-meta {
    display: flex; flex-wrap: wrap; gap: 8px 18px;
    font-size: 13px; color: #6A7A94;
}
.whitepaper-hero .wh-info .wh-meta span {
    display: inline-flex; align-items: center; gap: 5px;
}
.whitepaper-hero .wh-info .wh-meta svg { width: 14px; height: 14px; color: var(--primary); }

/* ========== 内容板块通用 ========== */
.block-title {
    position: relative;
    padding-left: 16px;
    font-family: "Source Han Serif SC", "Noto Serif SC", SimSun, serif;
    font-size: 19px; font-weight: 700; letter-spacing: 1px;
    color: var(--primary-dark);
    margin: 34px 0 16px;
}
.block-title::before {
    content: ""; position: absolute; left: 0; top: 50%;
    transform: translateY(-50%);
    width: 4px; height: 18px;
    background: linear-gradient(180deg, var(--gold), var(--primary));
    border-radius: 2px;
}
.block-title:first-child { margin-top: 0; }

/* 核心内容列表 */
.core-list { display: flex; flex-direction: column; gap: 12px; margin: 8px 0 6px; }
.core-item {
    display: flex; gap: 16px; align-items: flex-start;
    padding: 18px 22px;
    background: linear-gradient(160deg, #FFFFFF 0%, #F8FBFF 100%);
    border-radius: 12px;
    border: 1px solid #EDF3FC;
    transition: border-color .25s, box-shadow .25s, transform .25s;
}
.core-item:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-sm);
    transform: translateY(-2px);
}
.core-item .ci-num {
    flex-shrink: 0;
    width: 38px; height: 38px;
    border-radius: 10px;
    background: var(--primary-light);
    color: var(--primary);
    display: flex; align-items: center; justify-content: center;
    font-family: Georgia, "Times New Roman", serif;
    font-style: italic;
    font-size: 18px; font-weight: 700;
    transition: background .25s, color .25s;
}
.core-item:hover .ci-num { background: var(--primary); color: #fff; }
.core-item .ci-text { min-width: 0; }
.core-item .ci-text b {
    display: block; font-size: 15px; font-weight: 700;
    color: #1A2A44; margin-bottom: 4px; letter-spacing: .3px;
}
.core-item .ci-text p { font-size: 13.5px; line-height: 1.8; color: #6A7A94; margin: 0; }

/* 参与方标签 */
.partner-tags { display: flex; flex-wrap: wrap; gap: 10px; margin: 8px 0 6px; }
.partner-tags span {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 7px 16px;
    border-radius: 20px;
    background: var(--soft-bg);
    border: 1px solid var(--line);
    font-size: 13px; color: #5A6A84;
    transition: background .22s, border-color .22s, color .22s;
}
.partner-tags span:hover {
    background: var(--primary-light);
    border-color: var(--primary-light);
    color: var(--primary);
}
.partner-tags span::before {
    content: ""; width: 5px; height: 5px;
    border-radius: 50%; background: var(--gold);
    flex-shrink: 0;
}

/* 申请事项强调框 */
.apply-box {
    margin-top: 28px;
    padding: 24px 28px;
    border-radius: 14px;
    background: linear-gradient(120deg, #FBF8F0 0%, #FDFBF5 100%);
    border-left: 4px solid var(--gold);
    border-top: 1px solid #F0E8D4;
    border-right: 1px solid #F0E8D4;
    border-bottom: 1px solid #F0E8D4;
    position: relative;
}
.apply-box::before {
    content: ""; position: absolute; left: 28px; top: 0;
    width: 46px; height: 3px;
    background: var(--gold);
    border-radius: 0 0 2px 2px;
}
.apply-box .ab-title {
    display: flex; align-items: center; gap: 8px;
    font-family: "Source Han Serif SC", "Noto Serif SC", SimSun, serif;
    font-size: 17px; font-weight: 700; color: #8A6A20;
    letter-spacing: 1px; margin-bottom: 12px;
}
.apply-box .ab-title svg { width: 20px; height: 20px; color: var(--gold); }
.apply-box p {
    font-size: 14px; line-height: 1.95; color: #7A6A40;
    margin-bottom: 10px; text-align: justify;
}
.apply-box p:last-child { margin-bottom: 0; }
.apply-box .ab-sign {
    margin-top: 16px;
    font-size: 13.5px; color: #8A7A50;
    line-height: 1.9;
}
.apply-box .ab-sign b { color: #6A5A30; }

/* 申请信息表格 */
.apply-table-wrap { overflow-x: auto; margin: 12px 0 6px; }
.apply-table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.apply-table th {
    padding: 13px 18px; text-align: left;
    font-weight: 700; color: var(--primary-dark);
    background: var(--soft-bg);
    letter-spacing: .5px; border-bottom: 1px solid var(--line);
    white-space: nowrap; font-size: 13px;
}
.apply-table td {
    padding: 14px 18px; color: #4A5A74;
    border-bottom: 1px solid #F0F5FC;
    line-height: 1.7;
}
.apply-table tbody tr:last-child td { border-bottom: none; }
.apply-table tbody tr:hover { background: #F8FBFF; }
.apply-table td:first-child {
    font-weight: 600; color: #1A2A44; white-space: nowrap;
}

/* 信息提示 */
.info-note {
    display: flex; align-items: flex-start; gap: 10px;
    margin-top: 28px; padding: 16px 20px;
    border-radius: 10px;
    background: linear-gradient(90deg, #FBF8F0 0%, #FDFBF5 100%);
    border-left: 4px solid var(--gold);
    font-size: 13.5px; line-height: 1.8; color: #7A6A40;
}
.info-note svg { flex-shrink: 0; width: 18px; height: 18px; margin-top: 2px; color: var(--gold); }

.content-section { display: none; animation: fadeIn .3s ease; }
.content-section.active { display: block; }
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ========== 返回顶部 ========== */
.to-top {
    position: fixed; right: 26px; bottom: 30px; z-index: 400;
    width: 46px; height: 46px; border: none; border-radius: 50%;
    background: var(--primary); color: #fff; font-size: 20px;
    cursor: pointer; display: flex; align-items: center; justify-content: center;
    box-shadow: 0 10px 26px rgba(1, 60, 140, .3);
    opacity: 0; visibility: hidden; transform: translateY(12px);
    transition: opacity .3s, visibility .3s, transform .3s, background .3s;
}
.to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { background: var(--primary-dark); }

/* ========== 页脚 ========== */
.footer { background: var(--primary); color: #DCE9FB; border-top: 3px solid var(--gold); }
.footer-main { padding: 46px 0 36px; box-shadow: inset 0 -1px 0 rgba(255,255,255,.22); }
.footer-cols { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr 1.2fr; gap: 32px; }
.footer-brand { display: flex; flex-direction: column; gap: 14px; }
.footer-brand .fb-logo { display: flex; align-items: center; gap: 12px; }
.footer-brand .fb-logo img.logo-img {
    max-height: 46px; width: auto; max-width: 260px; object-fit: contain;
}
.footer-brand .fb-desc { font-size: 13.5px; line-height: 1.9; color: #DCE9FB; text-align: justify; }
.footer-brand .fb-qr { display: flex; align-items: center; gap: 12px; margin-top: 4px; }
.footer-brand .fb-qr .qr-box {
    width: 72px; height: 72px; padding: 4px;
    background: #fff; border-radius: 6px; flex-shrink: 0;
}
.footer-brand .fb-qr .qr-box i {
    display: block; width: 100%; height: 100%;
    background-color: #fff;
    background-image:
        linear-gradient(45deg, #1A2A44 25%, transparent 25%, transparent 75%, #1A2A44 75%),
        linear-gradient(45deg, #1A2A44 25%, transparent 25%, transparent 75%, #1A2A44 75%);
    background-size: 9px 9px;
    background-position: 0 0, 4.5px 4.5px;
    opacity: .85;
}
.footer-brand .fb-qr .qr-text { font-size: 13px; line-height: 1.7; color: #DCE9FB; }
.footer-brand .fb-qr .qr-text strong { display: block; color: #fff; font-size: 13.5px; margin-bottom: 2px; }

.footer-col h4 {
    font-size: 15px; font-weight: 700; color: #fff;
    letter-spacing: 1px; margin-bottom: 16px;
    padding-bottom: 10px; border-bottom: 1px solid rgba(255,255,255,.25);
}
.footer-col ul li { margin-bottom: 9px; }
.footer-col ul li a {
    font-size: 13.5px; color: #DCE9FB;
    transition: color .2s, padding-left .2s; display: inline-block;
}
.footer-col ul li a:hover { color: var(--gold-light); padding-left: 4px; }

.footer-contact li {
    display: flex; gap: 8px; font-size: 13.5px; color: #DCE9FB;
    margin-bottom: 12px; line-height: 1.7;
}
.footer-contact li .fc-icon {
    flex-shrink: 0; width: 16px; height: 16px;
    margin-top: 2px; color: var(--gold);
}
.footer-contact li .fc-icon svg { width: 100%; height: 100%; }

.footer-bottom { padding: 26px 0 28px; text-align: center; }
.footer-bottom .fb-line { font-size: 14px; line-height: 2.1; color: #EAF2FF; }
.footer-bottom .fb-line a { color: #EAF2FF; transition: color .2s; }
.footer-bottom .fb-line a:hover { color: var(--gold-light); }
.footer-bottom .sep { margin: 0 12px; color: rgba(255,255,255,.45); }
.footer-badges {
    display: flex; align-items: center; justify-content: center;
    flex-wrap: wrap; gap: 14px; margin-top: 18px;
}
.footer-badges .badge {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 6px 16px; border-radius: 20px;
    background: rgba(255,255,255,.14);
    font-size: 13.5px; color: #EAF2FF; transition: all .2s;
}
.footer-badges .badge:hover { background: rgba(201,168,76,.2); color: var(--gold-light); }
.footer-copyright {
    margin-top: 20px; padding-top: 18px;
    box-shadow: inset 0 1px 0 rgba(255,255,255,.22);
    font-size: 14px; color: #DCE9FB; line-height: 2;
}
.footer-copyright .highlight { color: #fff; font-weight: 600; }

/* ============================================================
   响应式布局
   ============================================================ */
@media (max-width: 1340px) { .container { max-width: 100%; } }

@media (max-width: 1024px) {
    .main-layout { grid-template-columns: 1fr; gap: 20px; }
    .sidebar-nav { position: static; border-radius: 14px; }
    .sidebar-nav-head { padding: 18px 20px 14px; }
    .sidebar-nav-head h2 { font-size: 19px; letter-spacing: 2px; }
    .sidebar-contact { display: none; }

    .content-head { padding: 22px 24px 18px; }
    .content-head::before { left: 24px; }
    .content-head h1 { font-size: 22px; }
    .content-body { padding: 24px 24px 32px; }

    .nav .container { flex-direction: column; align-items: stretch; padding: 0; }
    .nav-menu { display: none; flex-direction: column; background: #fff; }
    .nav-menu.open { display: flex; }
    .nav-item { flex: none; width: 100%; display: block; }
    .nav-item > a {
        justify-content: space-between; min-height: 0;
        padding: 14px 20px; color: #25324A;
        font-size: 15.5px; font-weight: 600;
        text-align: left; box-shadow: inset 0 -1px 0 var(--line);
    }
    .nav-item > a::after { display: none; }
    .nav-item:hover > a { background: #F2F7FF; }
    .nav-item > a.active { background: #F2F7FF; color: var(--primary); }
    .nav-item > a .caret { border-top-color: #8A9BB8; }
    .nav-item.open > a .caret { transform: rotate(180deg); }

    .dropdown {
        position: static; transform: none;
        opacity: 1; visibility: visible; display: none;
        width: 100%; min-width: 0; border-radius: 0;
        box-shadow: none; background: var(--soft-bg);
        padding: 0; overflow: visible;
    }
    .dropdown::before { display: none; }
    .nav-item.open .dropdown { display: block; }
    .dropdown li a { padding: 12px 34px; box-shadow: inset 0 -1px 0 var(--line); }
    .dropdown li:last-child a { box-shadow: none; }
    .dropdown li a:hover { padding-left: 38px; }
    .nav-item:hover .dropdown { transform: none; }

    .sidebar-nav { border-radius: 14px; overflow: visible; background: #fff; box-shadow: var(--shadow-sm); }
    .sidebar-nav-head {
        border-radius: 14px 14px 0 0;
        padding: 16px 18px 12px;
        background: linear-gradient(120deg, #0970EC 0%, #0964DA 100%);
    }
    .sidebar-nav-head h2 { font-size: 18px; letter-spacing: 2px; margin-bottom: 4px; }
    .sidebar-nav-head .en { font-size: 10px; }

    .sidebar-menu {
        display: grid !important;
        grid-template-columns: repeat(2, 1fr);
        gap: 8px; padding: 12px;
        border-bottom: 1px solid var(--line);
        background: #fff;
    }
    .sidebar-menu li { position: relative; }
    .sidebar-menu li a {
        display: flex; align-items: center; justify-content: center;
        text-align: center; padding: 11px 8px;
        font-size: 14px; font-weight: 500; color: #5A6A84;
        background: #F4F8FF; border-radius: 10px;
        border: 1px solid transparent;
        transition: all .22s ease;
        white-space: nowrap; overflow: hidden;
        text-overflow: ellipsis; min-height: 44px;
    }
    .sidebar-menu li a::before { display: none; }
    .sidebar-menu li a .arrow { display: none; }
    .sidebar-menu li a:hover {
        background: var(--primary-light); color: var(--primary);
        padding-left: 8px; border-color: var(--primary-light);
    }
    .sidebar-menu li a.active {
        background: var(--primary); color: #fff;
        font-weight: 600;
        box-shadow: 0 4px 12px rgba(1, 87, 198, .25);
        padding-left: 8px; border-color: var(--primary);
    }
}

@media (max-width: 768px) {
    .topbar { display: none; }

    .header {
        padding: 10px 0;
        background: #075ECF;
        border-bottom: 1px solid var(--line);
        overflow: visible;
    }
    .header::before, .header::after { display: none; }
    .header .container {
        display: flex; align-items: center;
        justify-content: space-between; flex-wrap: nowrap; gap: 10px;
    }
    .brand { gap: 0; flex: 1; min-width: 0; }
    .brand .logo-img {
        max-height: 56px; max-width: 200px;
        width: auto; height: auto; object-fit: contain;
    }
    .brand .logo-img.pc-logo { display: none; }
    .brand .logo-img.mobile-logo { display: block; }

    .header-right { display: flex; align-items: center; gap: 0; flex-shrink: 0; }
    .header-right .search { display: none; }
    .header-right .auth-buttons { display: none; }
    .mobile-more { display: flex; }

    .nav { position: relative; box-shadow: none; background: transparent; }
    .nav .container { padding: 0; }
    .nav-toggle { display: none; }
    .nav-menu {
        display: none; position: absolute;
        top: 100%; left: 0; right: 0; z-index: 300;
        flex-direction: column; background: #fff;
        box-shadow: 0 10px 24px rgba(0,0,0,.1);
        max-height: 80vh; overflow-y: auto;
        border-top: 1px solid var(--line);
    }
    .nav-menu.open { display: flex; }
    .nav-item { flex: none; width: 100%; display: block; }
    .nav-item > a {
        justify-content: space-between; min-height: 0;
        padding: 14px 20px; color: #25324A;
        font-size: 15.5px; font-weight: 600;
        text-align: left; box-shadow: inset 0 -1px 0 var(--line);
    }
    .nav-item > a::after { display: none; }
    .nav-item:hover > a { background: #F2F7FF; }
    .nav-item > a.active { background: #F2F7FF; color: var(--primary); }
    .nav-item > a .caret { border-top-color: #8A9BB8; }
    .nav-item.open > a .caret { transform: rotate(180deg); }
    .dropdown {
        position: static; transform: none;
        opacity: 1; visibility: visible; display: none;
        width: 100%; min-width: 0; border-radius: 0;
        box-shadow: none; background: var(--soft-bg);
        padding: 0; overflow: visible;
    }
    .dropdown::before { display: none; }
    .nav-item.open .dropdown { display: block; }
    .dropdown li a { padding: 12px 34px; box-shadow: inset 0 -1px 0 var(--line); }
    .dropdown li:last-child a { box-shadow: none; }
    .dropdown li a:hover { padding-left: 38px; }
    .nav-item:hover .dropdown { transform: none; }

    .breadcrumb-bar .container {
        height: auto; padding: 12px 0 12px 12px;
        font-size: 12.5px;
    }

    .main-wrap { padding: 16px 0 36px; }

    .content-head { padding: 18px 16px 16px; }
    .content-head::before { left: 16px; width: 46px; }
    .content-head h1 { font-size: 19px; letter-spacing: 1px; }
    .content-head .content-sub { font-size: 12.5px; }

    .content-body { padding: 20px 16px 28px; }

    .rich-text p { font-size: 14px; line-height: 1.95; margin-bottom: 14px; }
    .rich-text .lead { font-size: 14.5px; padding-left: 14px; margin-bottom: 18px; }

    .block-title { font-size: 17px; margin: 26px 0 14px; }
    .block-title::before { height: 17px; }

    .whitepaper-hero { flex-direction: column; gap: 16px; padding: 20px 20px; }
    .whitepaper-hero .wh-icon { width: 52px; height: 52px; border-radius: 13px; }
    .whitepaper-hero .wh-icon svg { width: 24px; height: 24px; }
    .whitepaper-hero .wh-info h2 { font-size: 18px; }
    .whitepaper-hero .wh-info .wh-meta { font-size: 12px; gap: 6px 14px; }

    .core-item { padding: 15px 16px; gap: 12px; }
    .core-item .ci-num { width: 32px; height: 32px; border-radius: 8px; font-size: 15px; }
    .core-item .ci-text b { font-size: 14px; }
    .core-item .ci-text p { font-size: 13px; }

    .partner-tags span { padding: 6px 13px; font-size: 12.5px; }

    .apply-box { padding: 20px 20px; }
    .apply-box .ab-title { font-size: 16px; }
    .apply-box p { font-size: 13.5px; }

    .apply-table th { padding: 11px 14px; font-size: 12.5px; }
    .apply-table td { padding: 12px 14px; font-size: 13px; }

    .info-note { font-size: 12.5px; padding: 14px 16px; margin-top: 22px; }

    .footer-cols { grid-template-columns: 1fr 1fr; gap: 24px; }
    .footer-brand { grid-column: 1 / -1; }
    .footer-main { padding: 32px 0 24px; }
}

@media (max-width: 480px) {
    .container { padding: 0 14px; }
    .content-head h1 { font-size: 17px; }
    .sidebar-menu { grid-template-columns: repeat(2, 1fr); }
    .apply-table-wrap { margin: 0 -16px; padding: 0 16px; }
    .footer-cols { grid-template-columns: 1fr; }
    .to-top { right: 16px; bottom: 18px; }
}