@charset "UTF-8";
/* =======================================================
   Bitpie 比特派官网 — 前台样式（大气简约 / 中性低饱和）
   ======================================================= */

:root {
    /* 中性色 */
    --bg: #F7F6F2;
    --surface: #FFFFFF;
    --surface-2: #F1EFE9;
    --surface-3: #EAF0F6;
    --ink: #17181B;
    --ink-2: #4E5359;
    --ink-3: #8B9096;
    --line: #E5E2DA;
    --line-strong: #D5D1C6;

    /* 品牌色 */
    --navy: #12395C;
    --navy-deep: #0E2A44;
    --navy-soft: #E8EEF5;
    --gold: #E6882B;
    --gold-deep: #C86B17;

    /* 深色页脚 */
    --footer-bg: #13161C;
    --footer-ink: #A9AEB6;
    --footer-ink-2: #6F7580;
    --footer-line: #262B34;

    --radius: 14px;
    --radius-lg: 20px;
    --header-h: 68px;
    --maxw: 1200px;

    --shadow-sm: 0 1px 2px rgba(23, 24, 27, .05);
    --shadow: 0 8px 24px rgba(23, 24, 27, .07);
    --shadow-lg: 0 18px 44px rgba(23, 24, 27, .1);

    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
            "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC",
            Helvetica, Arial, sans-serif;
}

/* ---------------- 基础 ---------------- */

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
    margin: 0;
    font-family: var(--font);
    background: var(--bg);
    color: var(--ink-2);
    font-size: 16px;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

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

a { color: var(--navy); text-decoration: none; }
a:hover { color: var(--navy-deep); }

h1, h2, h3, h4, h5, h6 {
    color: var(--ink);
    margin: 0 0 .5em;
    font-weight: 600;
    line-height: 1.3;
    letter-spacing: .01em;
}

p { margin: 0 0 1em; }

.container {
    width: 100%;
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 0 24px;
}

.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    background: var(--navy);
    color: #fff;
    padding: 10px 18px;
    border-radius: 0 0 8px 0;
    z-index: 100;
}
.skip-link:focus { left: 0; }

.sr-only {
    position: absolute;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
    border: 0;
}

/* ---------------- 按钮 ---------------- */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font: inherit;
    font-weight: 600;
    padding: 12px 26px;
    border-radius: 999px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: background-color .18s ease, border-color .18s ease, color .18s ease, transform .18s ease;
    white-space: nowrap;
}
.btn:hover { text-decoration: none; }

.btn--primary { background: var(--navy); color: #fff; }
.btn--primary:hover { background: var(--navy-deep); color: #fff; }

.btn--gold { background: var(--gold); color: var(--navy-deep); }
.btn--gold:hover { background: var(--gold-deep); color: #fff; }

.btn--ghost { background: transparent; border-color: var(--line-strong); color: var(--ink); }
.btn--ghost:hover { border-color: var(--navy); background: var(--navy-soft); }

.btn--outline { background: #fff; border-color: #fff; color: var(--navy-deep); }
.btn--outline:hover { background: var(--navy-soft); border-color: var(--navy-soft); color: var(--navy-deep); }

.btn--sm { padding: 8px 18px; font-size: 14px; }
.btn--lg { padding: 15px 34px; font-size: 17px; }
.btn--block { width: 100%; }

/* ---------------- 页头 ---------------- */

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(247, 246, 242, .92);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid transparent;
    transition: border-color .2s ease, background-color .2s ease;
}
.site-header.is-scrolled { border-color: var(--line); }

.site-header__inner {
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 0 24px;
    height: var(--header-h);
    display: flex;
    align-items: center;
    gap: 36px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 21px;
    color: var(--ink);
    letter-spacing: .01em;
}
.brand:hover { color: var(--ink); }
.brand .brand__tip { color: var(--ink-3); font-size: 14px; font-weight: 500; }

.nav { flex: 1; }
.nav__list {
    display: flex;
    align-items: center;
    gap: 4px;
    list-style: none;
    margin: 0;
    padding: 0;
}
.nav__link {
    display: block;
    padding: 8px 14px;
    border-radius: 8px;
    color: var(--ink-2);
    font-size: 15px;
    font-weight: 500;
}
.nav__link:hover { color: var(--ink); background: rgba(23, 24, 27, .045); }
.nav__link.is-active { color: var(--navy); font-weight: 600; }

.header__actions { display: flex; align-items: center; gap: 12px; }
.lang-switch {
    font-size: 13px;
    font-weight: 600;
    color: var(--ink-2);
    border: 1px solid var(--line-strong);
    border-radius: 999px;
    padding: 6px 13px;
    background: var(--surface);
    white-space: nowrap;
}
.lang-switch:hover { color: var(--navy); border-color: var(--navy); }

.burger {
    display: none;
    position: relative;
    width: 40px;
    height: 40px;
    background: transparent;
    border: 1px solid var(--line-strong);
    border-radius: 10px;
    cursor: pointer;
}
.burger span {
    position: absolute;
    left: 10px;
    right: 10px;
    height: 2px;
    background: var(--ink);
    border-radius: 2px;
    transition: opacity .18s ease, transform .18s ease;
}
.burger span:nth-child(1) { top: 13px; }
.burger span:nth-child(2) { top: 19px; }
.burger span:nth-child(3) { top: 25px; }
.burger.is-open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.burger.is-open span:nth-child(2) { opacity: 0; }
.burger.is-open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.mobile-menu {
    display: none;
    position: fixed;
    z-index: 49;
    top: var(--header-h);
    left: 0; right: 0;
    background: var(--surface);
    border-bottom: 1px solid var(--line);
    padding: 8px 24px 20px;
    box-shadow: var(--shadow);
}
.mobile-menu.is-open { display: block; }
.mobile-menu a {
    display: block;
    padding: 13px 4px;
    font-size: 16px;
    color: var(--ink);
    border-bottom: 1px solid var(--line);
}
.mobile-menu .btn { margin-top: 16px; }

/* ---------------- Hero ---------------- */

.hero { position: relative; overflow: hidden; }
.hero__inner {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    gap: 56px;
    align-items: center;
    padding: 88px 0 96px;
}
.hero__tag {
    display: inline-block;
    padding: 6px 14px;
    border-radius: 999px;
    background: var(--navy-soft);
    color: var(--navy);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 24px;
}
.hero__title {
    font-size: clamp(34px, 4.6vw, 52px);
    font-weight: 700;
    margin-bottom: 22px;
    letter-spacing: .01em;
}
.hero__sub {
    font-size: 17px;
    color: var(--ink-2);
    max-width: 34em;
    margin-bottom: 34px;
}
.hero__cta { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 36px; }
.hero__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 26px;
    color: var(--ink-3);
    font-size: 14px;
    border-top: 1px solid var(--line);
    padding-top: 22px;
}
.hero__meta b { color: var(--ink); font-weight: 600; }
.hero__media { display: flex; justify-content: center; }
.hero__media img { width: min(420px, 100%); }

/* ---------------- 通用 Section ---------------- */

.section { padding: 96px 0; }
.section--tight { padding: 64px 0; }
.section--tint { background: var(--surface-2); }
.section--flush { padding: 0; }

.section__head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 44px;
}
.section__title { font-size: clamp(24px, 3vw, 32px); margin-bottom: 12px; }
.section__sub { color: var(--ink-3); font-size: 16px; margin: 0 auto 44px; max-width: 40em; }
.section__center { text-align: center; margin-bottom: 48px; }
.section__center .section__title { margin-bottom: 12px; }
.section__more { color: var(--ink-2); font-size: 15px; white-space: nowrap; }
.section__more:hover { color: var(--navy); }

/* ---------------- 特性卡片 ---------------- */

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.feature {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 38px 34px;
}
.feature__num {
    display: inline-block;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: .14em;
    color: var(--gold-deep);
    margin-bottom: 18px;
    padding: 4px 12px;
    border: 1px solid var(--line-strong);
    border-radius: 999px;
}
.feature__title { font-size: 21px; margin-bottom: 10px; }
.feature__desc { margin: 0; }

/* ---------------- 引导段落 ---------------- */

.intro {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 64px;
    align-items: center;
}
.intro__eyebrow {
    font-size: 14px;
    font-weight: 700;
    letter-spacing: .18em;
    color: var(--gold-deep);
    text-transform: uppercase;
    margin-bottom: 18px;
}
.intro__text-col { min-width: 0; }
.intro__title { font-size: clamp(26px, 3.4vw, 38px); margin-bottom: 20px; }
.intro__text { margin-bottom: 0; font-size: 17px; }
.intro__media img { margin: 0 auto; }

/* ---------------- 交替图文 ---------------- */

.highlights { display: flex; flex-direction: column; gap: 96px; }
.highlight {
    display: grid;
    grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
    gap: 64px;
    align-items: center;
}
.highlight:nth-child(even) { grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); }
.highlight:nth-child(even) .highlight__text { order: 2; }
.highlight:nth-child(even) .highlight__img { order: 1; }
.highlight__badge {
    display: inline-block;
    font-size: 13px;
    font-weight: 700;
    color: var(--navy);
    background: var(--navy-soft);
    border-radius: 999px;
    padding: 5px 14px;
    margin-bottom: 20px;
}
.highlight__title { font-size: clamp(24px, 3vw, 30px); margin-bottom: 18px; }
.highlight__lines { margin: 0 0 0 0; padding: 0; list-style: none; }
.highlight__lines li { padding-left: 1.6em; position: relative; margin-bottom: 12px; }
.highlight__lines li::before {
    content: "";
    position: absolute;
    left: 0; top: .65em;
    width: 14px; height: 2px;
    background: var(--gold);
}
.highlight__img img { margin: 0 auto; }

/* ---------------- Tab 切换 ---------------- */

.tabs { border-top: 1px solid var(--line); }
.tabs__nav {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    list-style: none;
    padding: 0;
    margin: 0 0 36px;
}
.tabs__btn {
    font: inherit;
    font-size: 15px;
    font-weight: 600;
    padding: 10px 22px;
    border-radius: 999px;
    border: 1px solid var(--line-strong);
    background: var(--surface);
    color: var(--ink-2);
    cursor: pointer;
    transition: background-color .18s ease, color .18s ease, border-color .18s ease;
}
.tabs__btn:hover { color: var(--ink); border-color: var(--ink-3); }
.tabs__btn.is-active { background: var(--navy); border-color: var(--navy); color: #fff; }

.tabs__panel { display: none; max-width: 46em; }
.tabs__panel.is-active { display: block; }
.tabs__panel h3 { font-size: 22px; margin-bottom: 12px; }
.tabs__panel p { margin: 0; }

/* ---------------- 文章卡片 ---------------- */

.article-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.article-card {
    display: flex;
    flex-direction: column;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
    transition: box-shadow .2s ease, transform .2s ease;
}
.article-card:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.article-card img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    border-bottom: 1px solid var(--line);
}
.article-card__body { padding: 22px 24px 24px; display: flex; flex-direction: column; flex: 1; }
.article-card__tag {
    font-size: 13px;
    font-weight: 600;
    color: var(--navy);
    margin-bottom: 10px;
}
.article-card__title { font-size: 18px; line-height: 1.45; margin-bottom: 10px; }
.article-card__title a { color: var(--ink); }
.article-card__title a:hover { color: var(--navy); }
.article-card__desc {
    font-size: 14px;
    color: var(--ink-3);
    flex: 1;
    margin-bottom: 18px;
}
.article-card__foot {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--line);
    padding-top: 14px;
    font-size: 13px;
    color: var(--ink-3);
}

/* ---------------- 下载 CTA ---------------- */

.dl-cta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    flex-wrap: wrap;
    background: var(--navy);
    border-radius: var(--radius-lg);
    padding: 48px 56px;
    color: #fff;
}
.dl-cta h3 { color: #fff; font-size: 24px; margin-bottom: 8px; }
.dl-cta p { margin: 0; color: #B8C4D4; }
.dl-cta__actions { display: flex; flex-wrap: wrap; gap: 12px; }

.dl-cta__text { flex: 1 1 320px; min-width: 0; }
.hero__text { min-width: 0; }
.notice-card__body { min-width: 0; }

/* ---------------- 页面头 ---------------- */

.page-hero {
    background: var(--surface);
    border-bottom: 1px solid var(--line);
    padding: 64px 0 56px;
}
.page-hero .crumb {
    font-size: 14px;
    color: var(--ink-3);
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 22px;
}
.page-hero .crumb a { color: var(--ink-3); }
.page-hero .crumb a:hover { color: var(--navy); }
.page-hero h1 { font-size: clamp(28px, 3.6vw, 40px); margin-bottom: 14px; }
.page-hero p { margin: 0; color: var(--ink-3); max-width: 44em; }

/* ---------------- 筛选与分页 ---------------- */

.filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 40px;
}
.chip {
    display: inline-block;
    padding: 8px 18px;
    border-radius: 999px;
    border: 1px solid var(--line-strong);
    background: var(--surface);
    color: var(--ink-2);
    font-size: 14px;
    font-weight: 500;
}
.chip:hover { color: var(--ink); border-color: var(--ink-3); }
.chip.is-active { background: var(--navy); border-color: var(--navy); color: #fff; }

.pagination {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
    margin-top: 52px;
}
.page-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 14px;
    border-radius: 10px;
    border: 1px solid var(--line-strong);
    background: var(--surface);
    color: var(--ink-2);
    font-size: 14px;
}
.page-btn:hover { color: var(--navy); border-color: var(--navy); }
.page-btn.is-active { background: var(--navy); border-color: var(--navy); color: #fff; }

.empty-state {
    text-align: center;
    padding: 72px 24px;
    background: var(--surface);
    border: 1px dashed var(--line-strong);
    border-radius: var(--radius);
}
.empty-state h3 { margin-bottom: 8px; }
.empty-state p { color: var(--ink-3); margin-bottom: 4px; }

/* ---------------- 下载页 ---------------- */

.dl-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
}
.dl-tab {
    font: inherit;
    font-size: 15px;
    font-weight: 600;
    padding: 10px 24px;
    border-radius: 999px;
    border: 1px solid var(--line-strong);
    background: var(--surface);
    color: var(--ink-2);
    cursor: pointer;
}
.dl-tab.is-active { background: var(--navy); border-color: var(--navy); color: #fff; }

.dl-panel {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 40px 44px;
}
.dl-panel__head {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding-bottom: 28px;
    border-bottom: 1px solid var(--line);
    margin-bottom: 28px;
    flex-wrap: wrap;
}
.dl-panel__icon {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    background: var(--navy-soft);
    color: var(--navy);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    flex-shrink: 0;
}
.dl-panel__meta { flex: 1; min-width: 240px; }
.dl-panel__meta h2 { font-size: 22px; margin-bottom: 10px; }
.dl-panel__spec {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 28px;
    font-size: 14px;
    color: var(--ink-3);
}
.dl-panel__spec b { color: var(--ink); font-weight: 600; }
.dl-badge {
    font-size: 13px;
    font-weight: 700;
    color: var(--gold-deep);
    border: 1px solid var(--gold);
    border-radius: 999px;
    padding: 5px 14px;
    white-space: nowrap;
}
.dl-empty {
    color: var(--ink-3);
    text-align: center;
    padding: 24px 0;
}

.dl-source {
    display: flex;
    align-items: center;
    gap: 18px;
    padding: 20px 4px;
    border-bottom: 1px solid var(--line);
    flex-wrap: wrap;
}
.dl-source:last-of-type { border-bottom: none; }
.dl-source__icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    border: 1px solid var(--line);
    background: var(--surface-2);
    color: var(--ink);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
}
.dl-source__info { flex: 1; min-width: 180px; }
.dl-source__name { font-weight: 600; color: var(--ink); display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.dl-source__type {
    font-size: 12px;
    font-weight: 500;
    color: var(--ink-3);
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 2px 10px;
}
.dl-source__note { font-size: 13px; color: var(--ink-3); margin-top: 4px; }
.dl-source__act { display: flex; align-items: center; gap: 14px; }
.dl-pass {
    font-size: 13px;
    color: var(--ink-3);
    border: 1px dashed var(--line-strong);
    border-radius: 999px;
    padding: 6px 13px;
    cursor: pointer;
    user-select: none;
}
.dl-pass b { color: var(--ink); letter-spacing: .05em; }
.dl-pass.is-copied { border-style: solid; border-color: var(--gold); color: var(--gold-deep); }
.dl-note {
    margin-top: 18px;
    background: var(--surface-2);
    border-radius: 10px;
    padding: 14px 18px;
    font-size: 14px;
    color: var(--ink-3);
}

/* ---------------- 步骤 ---------------- */

.step-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.step {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 30px 26px;
}
.step__num {
    font-size: 13px;
    font-weight: 700;
    color: var(--gold-deep);
    letter-spacing: .12em;
    margin-bottom: 14px;
}
.step h3 { font-size: 18px; margin-bottom: 8px; }
.step p { font-size: 14px; margin: 0; }

/* ---------------- 表格 ---------------- */

.spec-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--surface);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}
.spec-table th, .spec-table td {
    text-align: left;
    padding: 15px 22px;
    border-bottom: 1px solid var(--line);
    font-size: 15px;
}
.spec-table thead th { background: var(--surface-2); color: var(--ink); font-weight: 600; }
.spec-table tbody th { color: var(--ink); font-weight: 600; white-space: nowrap; }
.spec-table tbody td { color: var(--ink-3); }
.spec-table tr:last-child th, .spec-table tr:last-child td { border-bottom: none; }

/* ---------------- FAQ ---------------- */

.faq-list {
    max-width: 860px;
    margin: 0 auto;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
}
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item:last-child { border-bottom: none; }
.faq-q {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    font: inherit;
    font-size: 16px;
    font-weight: 600;
    color: var(--ink);
    background: transparent;
    border: none;
    text-align: left;
    padding: 22px 26px;
    cursor: pointer;
}
.faq-q::after {
    content: "+";
    font-size: 20px;
    color: var(--ink-3);
    flex-shrink: 0;
    transition: transform .18s ease;
}
.faq-item.is-open .faq-q::after { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .24s ease; }
.faq-a p { margin: 0; padding: 2px 26px 22px; color: var(--ink-2); font-size: 15px; }

/* ---------------- 文章页 ---------------- */

.article-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 48px;
    align-items: start;
}
.article-main { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 40px 44px; }
.article-cover {
    width: 100%;
    aspect-ratio: 800 / 420;
    object-fit: cover;
    border-radius: var(--radius);
    margin-bottom: 32px;
    border: 1px solid var(--line);
}
.article-body { font-size: 16px; }
.article-body h2 {
    font-size: 22px;
    margin: 36px 0 16px;
    padding-top: 8px;
    border-top: 1px solid var(--line);
}
.article-body h3 { font-size: 18px; margin: 26px 0 12px; }
.article-body ul { margin: 0 0 1em; padding-left: 1.4em; }
.article-body li { margin-bottom: 6px; }
.article-body p { margin-bottom: 1.1em; }
.article-body strong { color: var(--ink); }

.article-dl {
    background: var(--surface-2);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    margin-top: 36px;
    padding: 26px 28px;
}
.article-dl__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 6px;
    flex-wrap: wrap;
}
.article-dl__head h3 { margin: 0; font-size: 18px; }
.article-dl__head span { font-size: 13px; color: var(--ink-3); }
.article-dl__body .dl-source__icon { background: var(--surface); }

.article-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 26px; }
.tag {
    font-size: 13px;
    color: var(--ink-2);
    border: 1px solid var(--line-strong);
    border-radius: 999px;
    padding: 5px 13px;
    background: var(--surface);
}
.tag:hover { color: var(--navy); border-color: var(--navy); }

.sidebar { display: flex; flex-direction: column; gap: 20px; }
.side-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 26px;
}
.side-card h4 { font-size: 16px; margin-bottom: 16px; }
.side-card p { font-size: 14px; color: var(--ink-3); margin-bottom: 18px; }
.side-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 9px 0;
    color: var(--ink-2);
    font-size: 14px;
    line-height: 1.45;
    border-bottom: 1px solid var(--line);
}
.side-link:last-child { border-bottom: none; }
.side-link:hover { color: var(--navy); }
.side-link img {
    width: 58px;
    height: 44px;
    border-radius: 8px;
    object-fit: cover;
    flex-shrink: 0;
    border: 1px solid var(--line);
}
.side-tags { display: flex; flex-wrap: wrap; gap: 8px; }

/* ---------------- 公告 ---------------- */

.notice-columns { display: grid; grid-template-columns: 420px minmax(0, 1fr); gap: 64px; align-items: start; }
.notice-filters { display: flex; flex-direction: column; gap: 30px; }
.notice-filters .notice-meta { font-size: 14px; color: var(--ink-3); }

.notice-list { display: flex; flex-direction: column; gap: 20px; }
.notice-card {
    display: grid;
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 22px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 26px 28px;
    transition: box-shadow .2s ease;
}
.notice-card:hover { box-shadow: var(--shadow); }
.notice-card__date {
    text-align: center;
    border-right: 1px solid var(--line);
    padding-right: 22px;
}
.notice-card__day {
    display: block;
    font-size: 30px;
    font-weight: 700;
    color: var(--navy);
    line-height: 1.1;
    margin-bottom: 2px;
}
.notice-card__month {
    font-size: 12px;
    color: var(--ink-3);
    letter-spacing: .1em;
    text-transform: uppercase;
}
.notice-card__cat {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: var(--gold-deep);
    background: rgba(192, 160, 98, .12);
    border-radius: 999px;
    padding: 3px 11px;
    margin-bottom: 10px;
}
.notice-card h3 {
    font-size: 19px;
    line-height: 1.45;
    margin-bottom: 8px;
}
.notice-card h3 a { color: var(--ink); }
.notice-card h3 a:hover { color: var(--navy); }
.notice-card p { font-size: 14px; color: var(--ink-3); margin-bottom: 12px; }
.notice-card__more { font-size: 14px; font-weight: 600; }

/* ---------------- 公告文章页 ---------------- */

.notice-body { max-width: 820px; margin: 0 auto; }
.notice-body article {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 48px 56px;
}
.notice-body__head { border-bottom: 1px solid var(--line); padding-bottom: 26px; margin-bottom: 30px; }
.notice-body__head h1 { font-size: clamp(24px, 3.2vw, 32px); margin-bottom: 14px; }
.notice-body__meta { font-size: 14px; color: var(--ink-3); display: flex; gap: 16px; flex-wrap: wrap; }
.notice-body__meta .notice-card__cat { margin-bottom: 0; }
.notice-body__content p { margin-bottom: 1.2em; }
.notice-body__content strong { color: var(--ink); }

/* ---------------- 联系页 ---------------- */

.contact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.contact-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 40px 34px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.contact-card__icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    background: var(--navy-soft);
    color: var(--navy);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 8px;
    font-size: 22px;
}
.contact-card h3 { font-size: 19px; margin: 0; }
.contact-card__note { font-size: 14px; color: var(--ink-3); margin: 0; }
.contact-card a.mail { font-size: 16px; font-weight: 600; word-break: break-all; }
.contact-card a.mail:hover { color: var(--navy-deep); }

.trust-banner {
    background: var(--surface-2);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 34px 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
}
.trust-banner h3 { font-size: 19px; margin-bottom: 6px; }
.trust-banner p { margin: 0; font-size: 14px; color: var(--ink-3); }
.trust-banner .btn { flex-shrink: 0; }

/* ---------------- 页脚 ---------------- */

.footer { background: var(--footer-bg); color: var(--footer-ink); font-size: 14px; padding: 72px 0 36px; margin-top: 0; }
.footer a { color: var(--footer-ink); }
.footer a:hover { color: #fff; }
.footer__grid {
    display: grid;
    grid-template-columns: minmax(0, 1.6fr) repeat(3, minmax(0, 1fr));
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid var(--footer-line);
}
.footer__brand { display: flex; align-items: center; gap: 10px; margin-bottom: 18px; }
.footer__brand img { width: 120px; height: auto; }
.footer__desc { margin: 0 0 20px; max-width: 34em; font-size: 14px; line-height: 1.8; color: var(--footer-ink-2); }
.footer h5 { color: #fff; font-size: 15px; margin: 6px 0 18px; }
.footer__col a { display: block; padding: 5px 0; }
.footer__list { list-style: none; margin: 0; padding: 0; }
.footer__list li { padding: 5px 0; color: var(--footer-ink-2); }
.footer__bottom {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding-top: 28px;
    font-size: 13px;
    color: var(--footer-ink-2);
}
.footer__bottom a { color: var(--footer-ink-2); }
.footer__bottom a:hover { color: #fff; }

/* ---------------- 响应式 ---------------- */

@media (max-width: 1024px) {
    .feature-grid, .article-grid { grid-template-columns: repeat(2, 1fr); }
    .step-grid { grid-template-columns: repeat(2, 1fr); }
    .contact-grid { grid-template-columns: 1fr; }
    .article-layout { grid-template-columns: 1fr; }
    .footer__grid { grid-template-columns: repeat(2, 1fr); }
    .notice-columns { grid-template-columns: 1fr; }
}

@media (max-width: 860px) {
    .hero__inner { grid-template-columns: 1fr; gap: 40px; padding: 64px 0 72px; }
    .hero__media { order: -1; }
    .hero__media img { width: min(300px, 72%); }
    .highlight, .highlight:nth-child(even) { grid-template-columns: 1fr; gap: 36px; }
    .highlight:nth-child(even) .highlight__text { order: 1; }
    .highlight:nth-child(even) .highlight__img { order: 2; }
    .intro { grid-template-columns: 1fr; gap: 40px; }
    .dl-cta { padding: 36px 32px; }
}

@media (max-width: 768px) {
    .nav { display: none; }
    .header__actions .btn--primary { display: none; }
    .burger { display: block; }
    .section { padding: 68px 0; }
    .feature-grid, .article-grid { grid-template-columns: 1fr; }
    .step-grid { grid-template-columns: 1fr; }
    .page-hero { padding: 44px 0 40px; }
    .dl-panel { padding: 28px 24px; }
    .article-main { padding: 26px 22px; }
    .notice-body article { padding: 30px 24px; }
    .notice-card { grid-template-columns: 1fr; padding: 22px; }
    .notice-card__date { border-right: none; border-bottom: 1px solid var(--line); padding: 0 0 14px; text-align: left; display: flex; gap: 8px; align-items: baseline; }
    .footer__grid { grid-template-columns: 1fr; gap: 36px; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .btn, .article-card, .faq-a, .tabs__btn, .dl-tab, .chip, .page-btn { transition: none; }
}