/*
 * 龙八国际体育彩票 · 体育赛事数据中心
 * 站点样式表 style.css
 * 设计方向:Sports Data Intelligence
 * 配色:浅色底 #F4F7FB / 深蓝 #10325C / 冰白 / 信号绿 #37E07F / 石墨 #2A2F36
 * 数字统一使用等宽字体(system mono)
 * 断点:375px / 768px / 1440px
 */

/* ---------- 设计变量 ---------- */
:root {
    --sd-bg: #F4F7FB;
    --sd-navy: #10325C;
    --sd-navy-deep: #0B2342;
    --sd-navy-soft: #173F73;
    --sd-ice: #FFFFFF;
    --sd-signal: #37E07F;
    --sd-signal-ink: #0E3D23;
    --sd-graphite: #2A2F36;
    --sd-muted: #5C6672;
    --sd-faint: #8A94A3;
    --sd-line: #DCE3EC;
    --sd-line-soft: #E8EDF4;
    --sd-mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
    --sd-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
    --sd-radius: 14px;
    --sd-shadow: 0 10px 30px rgba(16, 50, 92, 0.08);
}

/* ---------- 基础 ---------- */
* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--sd-bg);
    color: var(--sd-graphite);
    font-family: var(--sd-sans);
    font-size: 15px;
    line-height: 1.7;
}

.sd-main {
    display: block;
}

.sd-container {
    max-width: 1280px;
    margin: 0 auto;
    padding-left: 20px;
    padding-right: 20px;
}

a {
    color: var(--sd-navy);
}

img {
    max-width: 100%;
}

/* ---------- 顶部导航 sports-data-nav ---------- */
.sd-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: var(--sd-ice);
    border-bottom: 1px solid var(--sd-line-soft);
}

.sd-topbar {
    background: var(--sd-navy);
}

.sd-topbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
    min-height: 38px;
}

.sd-league-switch {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
}

.sd-league-switch-label {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.72);
    margin-right: 2px;
}

.sd-league-pill {
    border: 1px solid rgba(255, 255, 255, 0.35);
    background: transparent;
    color: rgba(255, 255, 255, 0.9);
    font-size: 12px;
    padding: 3px 10px;
    border-radius: 999px;
    cursor: pointer;
    transition: background 0.2s ease, color 0.2s ease;
}

.sd-league-pill:hover {
    border-color: var(--sd-signal);
    color: var(--sd-signal);
}

.sd-league-pill.sd-active {
    background: var(--sd-signal);
    border-color: var(--sd-signal);
    color: var(--sd-signal-ink);
    font-weight: 700;
}

.sd-topbar-meta {
    display: flex;
    gap: 14px;
}

.sd-topbar-link {
    color: rgba(255, 255, 255, 0.78);
    font-size: 12px;
    text-decoration: none;
}

.sd-topbar-link:hover {
    color: var(--sd-signal);
}

.sd-navbar {
    background: var(--sd-ice);
}

.sd-navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    min-height: 64px;
}

.sd-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.sd-brand-mark {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: var(--sd-navy);
    color: var(--sd-signal);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
}

.sd-brand-text {
    font-size: 18px;
    font-weight: 800;
    color: var(--sd-navy);
    letter-spacing: 0.5px;
}

.sd-nav {
    display: none;
    align-items: center;
    gap: 20px;
}

.sd-nav a {
    color: var(--sd-graphite);
    text-decoration: none;
    font-size: 14px;
    white-space: nowrap;
}

.sd-nav a:hover {
    color: var(--sd-navy);
    font-weight: 700;
}

.sd-nav-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 1px solid var(--sd-line);
    border-radius: 10px;
    background: transparent;
    color: var(--sd-navy);
    font-size: 18px;
    cursor: pointer;
}

.sd-nav.sd-open {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
    padding: 6px 0 14px;
    gap: 14px;
    border-top: 1px solid var(--sd-line-soft);
}

/* ---------- Hero analytics-score-hero ---------- */
.sd-hero {
    background: linear-gradient(180deg, var(--sd-ice) 0%, var(--sd-bg) 100%);
    padding: 46px 0 0;
}

.sd-hero-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
    align-items: center;
}

.sd-kicker {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--sd-navy);
    font-weight: 700;
    background: rgba(16, 50, 92, 0.08);
    padding: 6px 12px;
    border-radius: 999px;
}

.sd-kicker i {
    color: var(--sd-navy);
}

.sd-hero-title {
    font-size: 32px;
    line-height: 1.3;
    color: var(--sd-navy);
    margin: 16px 0 14px;
    font-weight: 800;
}

.sd-hero-sub {
    color: var(--sd-muted);
    font-size: 16px;
    line-height: 1.9;
    max-width: 560px;
    margin: 0;
}

.cover-topics {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 20px 0 22px;
}

.cover-topics span {
    font-size: 13px;
    color: var(--sd-navy);
    background: var(--sd-ice);
    border: 1px solid var(--sd-line);
    padding: 6px 14px;
    border-radius: 999px;
}

.sd-hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
}

.sd-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 22px;
    border-radius: 12px;
    font-size: 15px;
    font-weight: 700;
    text-decoration: none;
    border: 1px solid transparent;
    transition: transform 0.2s ease, background 0.2s ease;
}

.sd-btn:hover {
    transform: translateY(-2px);
}

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

.sd-btn-primary:hover {
    background: var(--sd-navy-soft);
}

.sd-btn-ghost {
    background: transparent;
    color: var(--sd-navy);
    border-color: var(--sd-navy);
}

.sd-btn-ghost:hover {
    background: rgba(16, 50, 92, 0.06);
}

.sd-btn-signal {
    background: var(--sd-signal);
    color: var(--sd-signal-ink);
}

.sd-btn-light {
    background: #fff;
    color: var(--sd-navy);
}

/* Hero 右栏配图与叠加面板 */
.sd-hero-visual {
    position: relative;
}

.sd-hero-figure {
    margin: 0;
    border-radius: var(--sd-radius);
    overflow: hidden;
    box-shadow: var(--sd-shadow);
}

.sd-hero-figure img {
    width: 100%;
    height: auto;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    display: block;
}

.sd-panel {
    position: absolute;
    background: var(--sd-ice);
    border: 1px solid var(--sd-line-soft);
    border-radius: 12px;
    box-shadow: var(--sd-shadow);
    padding: 14px 16px;
}

.sd-panel-trend {
    top: 14px;
    left: 14px;
    width: 46%;
}

.sd-panel-live {
    bottom: 14px;
    right: 14px;
}

.sd-panel-title {
    font-size: 12px;
    color: var(--sd-faint);
    margin: 0 0 10px;
    letter-spacing: 0.5px;
}

.sd-bars {
    display: flex;
    align-items: flex-end;
    gap: 5px;
    height: 64px;
}

.sd-bar {
    flex: 1;
    background: var(--sd-signal);
    border-radius: 3px 3px 0 0;
    height: var(--sd-h, 40%);
    min-height: 8px;
}

.sd-bar.sd-bar-soft {
    background: rgba(55, 224, 127, 0.35);
}

.sd-live-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--sd-signal);
    margin-right: 6px;
}

.sd-live-line {
    font-family: var(--sd-mono);
    font-size: 13px;
    color: var(--sd-graphite);
    margin: 0;
    white-space: nowrap;
}

.sd-live-line b {
    color: var(--sd-navy);
}

/* 热门赛事横条 */
.sd-hotstrip {
    margin-top: 26px;
    background: var(--sd-ice);
    border: 1px solid var(--sd-line-soft);
    border-radius: var(--sd-radius);
    padding: 8px 6px;
    box-shadow: var(--sd-shadow);
    overflow-x: auto;
}

.sd-hotstrip-track {
    display: flex;
    min-width: 880px;
}

.sd-hot-item {
    flex: 1;
    min-width: 210px;
    padding: 10px 14px;
    border-right: 1px solid var(--sd-line-soft);
}

.sd-hot-item:last-child {
    border-right: none;
}

.sd-hot-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}

.sd-hot-league {
    font-size: 11px;
    color: var(--sd-navy);
    background: rgba(16, 50, 92, 0.08);
    padding: 3px 8px;
    border-radius: 999px;
}

.sd-hot-trend {
    font-size: 12px;
    color: var(--sd-signal-ink);
}

.sd-hot-teams {
    display: block;
    font-size: 14px;
    font-weight: 700;
    color: var(--sd-graphite);
    margin-top: 6px;
}

.sd-hot-meta {
    font-size: 12px;
    color: var(--sd-muted);
    margin-top: 2px;
}

.sd-hot-odds {
    font-family: var(--sd-mono);
    font-size: 13px;
    color: var(--sd-navy);
    font-weight: 700;
}

/* ---------- 通用 section ---------- */
.sd-section {
    padding: 56px 0;
}

.sd-section-alt {
    background: var(--sd-ice);
}

.sd-section-navy {
    background: var(--sd-navy);
}

.sd-section-head {
    max-width: 760px;
    margin-bottom: 28px;
}

.sd-section-head h2 {
    font-size: 26px;
    color: var(--sd-navy);
    margin: 0 0 10px;
    font-weight: 800;
}

.sd-section-navy .sd-section-head h2 {
    color: #fff;
}

.sd-section-head p {
    color: var(--sd-muted);
    line-height: 1.9;
    font-size: 15px;
    margin: 0;
}

.sd-section-navy .sd-section-head p {
    color: rgba(255, 255, 255, 0.8);
}

/* ---------- 比赛中心:筛选与数据表 ---------- */
.sd-filterbar {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 18px;
}

.sd-filter-btn {
    border: 1px solid var(--sd-line);
    background: var(--sd-ice);
    color: var(--sd-muted);
    font-size: 13px;
    padding: 7px 16px;
    border-radius: 999px;
    cursor: pointer;
}

.sd-filter-btn.sd-active {
    background: var(--sd-navy);
    border-color: var(--sd-navy);
    color: #fff;
    font-weight: 700;
}

.sd-table-wrap {
    overflow-x: auto;
    background: var(--sd-ice);
    border: 1px solid var(--sd-line-soft);
    border-radius: var(--sd-radius);
    box-shadow: var(--sd-shadow);
}

.sd-table {
    width: 100%;
    min-width: 760px;
    border-collapse: collapse;
    font-size: 14px;
}

.sd-table th {
    text-align: left;
    padding: 12px 16px;
    font-size: 12px;
    color: var(--sd-faint);
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--sd-line-soft);
    white-space: nowrap;
}

.sd-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--sd-line-soft);
    white-space: nowrap;
    color: var(--sd-graphite);
}

.sd-table tbody tr:last-child td {
    border-bottom: none;
}

.sd-table tbody tr:hover {
    background: rgba(16, 50, 92, 0.04);
}

.sd-table .sd-num {
    font-family: var(--sd-mono);
    color: var(--sd-navy);
    font-weight: 700;
}

.sd-table .sd-league-tag {
    font-size: 11px;
    color: var(--sd-navy);
    background: rgba(16, 50, 92, 0.08);
    padding: 3px 8px;
    border-radius: 999px;
}

.sd-table tr.sd-hidden {
    display: none;
}

/* ---------- 联赛总览 ---------- */
.sd-league-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

.sd-league-card {
    background: var(--sd-ice);
    border: 1px solid var(--sd-line-soft);
    border-radius: var(--sd-radius);
    padding: 20px;
    box-shadow: var(--sd-shadow);
}

.sd-league-card-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
}

.sd-league-name {
    font-size: 17px;
    font-weight: 800;
    color: var(--sd-navy);
}

.sd-league-badge {
    font-size: 11px;
    color: var(--sd-signal-ink);
    background: var(--sd-signal);
    padding: 3px 10px;
    border-radius: 999px;
    font-weight: 700;
}

.sd-league-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}

.sd-league-stat {
    border-top: 1px solid var(--sd-line-soft);
    padding-top: 10px;
}

.sd-league-stat b {
    display: block;
    font-family: var(--sd-mono);
    font-size: 18px;
    color: var(--sd-navy);
}

.sd-league-stat span {
    font-size: 12px;
    color: var(--sd-faint);
}

/* ---------- 足球情报 ---------- */
.sd-intel-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    align-items: center;
}

.sd-intel-list {
    display: grid;
    gap: 12px;
    margin-top: 18px;
}

.sd-intel-item {
    background: var(--sd-ice);
    border: 1px solid var(--sd-line-soft);
    border-radius: 12px;
    padding: 14px 16px;
}

.sd-intel-item h3 {
    margin: 0 0 6px;
    font-size: 15px;
    color: var(--sd-navy);
    display: flex;
    align-items: center;
    gap: 8px;
}

.sd-intel-item h3 i {
    color: var(--sd-signal-ink);
    font-size: 13px;
}

.sd-intel-item p {
    margin: 0;
    font-size: 14px;
    color: var(--sd-muted);
    line-height: 1.8;
}

.sd-intel-figure {
    margin: 0;
    border-radius: var(--sd-radius);
    overflow: hidden;
    box-shadow: var(--sd-shadow);
    position: relative;
}

.sd-intel-figure img {
    width: 100%;
    display: block;
    aspect-ratio: 16 / 10;
    object-fit: cover;
}

.sd-figure-note {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(11, 35, 66, 0.85);
    color: #fff;
    font-size: 12px;
    padding: 10px 14px;
    margin: 0;
    line-height: 1.7;
}

/* ---------- 数据洞察 ---------- */
.sd-stat-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.sd-stat-card {
    background: var(--sd-ice);
    border: 1px solid var(--sd-line-soft);
    border-radius: var(--sd-radius);
    padding: 18px;
    box-shadow: var(--sd-shadow);
}

.sd-stat-icon {
    width: 34px;
    height: 34px;
    border-radius: 10px;
    background: rgba(55, 224, 127, 0.18);
    color: var(--sd-signal-ink);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 12px;
    font-size: 15px;
}

.sd-stat-num {
    font-family: var(--sd-mono);
    font-size: 26px;
    font-weight: 800;
    color: var(--sd-navy);
    line-height: 1.2;
}

.sd-stat-num small {
    font-size: 13px;
    font-weight: 700;
    color: var(--sd-muted);
}

.sd-stat-label {
    font-size: 13px;
    color: var(--sd-muted);
    margin-top: 4px;
}

.sd-insight-split {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    margin-top: 24px;
}

.sd-trend-card {
    background: var(--sd-navy);
    border-radius: var(--sd-radius);
    padding: 22px;
    color: #fff;
}

.sd-trend-card h3 {
    margin: 0 0 16px;
    font-size: 16px;
}

.sd-trend-legend {
    display: flex;
    gap: 14px;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: 12px;
}

.sd-trend-legend i {
    color: var(--sd-signal);
    margin-right: 4px;
}

.sd-trend-note {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.75);
    line-height: 1.8;
    margin: 12px 0 0;
}

.sd-insight-figure {
    margin: 0;
    border-radius: var(--sd-radius);
    overflow: hidden;
    box-shadow: var(--sd-shadow);
}

.sd-insight-figure img {
    width: 100%;
    display: block;
    height: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
}

/* ---------- 体育项目 chips ---------- */
.sd-chip-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.sd-chip-card {
    background: var(--sd-ice);
    border: 1px solid var(--sd-line-soft);
    border-radius: 12px;
    padding: 14px 12px;
    text-align: center;
}

.sd-chip-card i {
    color: var(--sd-navy);
    font-size: 20px;
}

.sd-chip-name {
    display: block;
    margin-top: 8px;
    font-size: 14px;
    font-weight: 700;
    color: var(--sd-graphite);
}

.sd-chip-meta {
    display: block;
    margin-top: 4px;
    font-size: 12px;
    color: var(--sd-faint);
}

/* ---------- 平台工具 ---------- */
.sd-tool-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
}

.sd-tool-card {
    background: var(--sd-ice);
    border: 1px solid var(--sd-line-soft);
    border-radius: var(--sd-radius);
    padding: 20px;
    box-shadow: var(--sd-shadow);
}

.sd-tool-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: var(--sd-navy);
    color: var(--sd-signal);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 14px;
    font-size: 18px;
}

.sd-tool-card h3 {
    margin: 0 0 8px;
    font-size: 16px;
    color: var(--sd-navy);
}

.sd-tool-card p {
    margin: 0;
    font-size: 14px;
    color: var(--sd-muted);
    line-height: 1.8;
}

.sd-tool-link {
    display: inline-flex;
    margin-top: 12px;
    font-size: 13px;
    font-weight: 700;
    color: var(--sd-navy);
    text-decoration: none;
}

.sd-tool-link:hover {
    color: var(--sd-navy-soft);
}

/* ---------- 移动接入 ---------- */
.sd-mobile-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    align-items: center;
}

.sd-mobile-figure {
    margin: 0;
    border-radius: var(--sd-radius);
    overflow: hidden;
    box-shadow: var(--sd-shadow);
}

.sd-mobile-figure img {
    width: 100%;
    display: block;
    aspect-ratio: 4 / 5;
    object-fit: cover;
}

.sd-mobile-rows {
    display: grid;
    gap: 10px;
    margin-top: 18px;
}

.sd-mobile-row {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    background: var(--sd-ice);
    border: 1px solid var(--sd-line-soft);
    border-radius: 12px;
    padding: 12px 14px;
}

.sd-mobile-row i {
    color: var(--sd-signal-ink);
    background: rgba(55, 224, 127, 0.18);
    border-radius: 8px;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    flex: none;
}

.sd-mobile-row b {
    display: block;
    font-size: 14px;
    color: var(--sd-navy);
}

.sd-mobile-row span {
    font-size: 13px;
    color: var(--sd-muted);
    line-height: 1.7;
}

/* ---------- 用户札记 ---------- */
.sd-notes-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
}

.sd-note-card {
    background: var(--sd-ice);
    border: 1px solid var(--sd-line-soft);
    border-radius: var(--sd-radius);
    padding: 20px;
    box-shadow: var(--sd-shadow);
}

.sd-note-quote {
    margin: 0;
    font-size: 14px;
    line-height: 1.9;
    color: var(--sd-graphite);
}

.sd-note-author {
    margin-top: 12px;
    font-size: 12px;
    color: var(--sd-faint);
}

/* ---------- FAQ 九宫格 data-faq-grid ---------- */
.sd-faq-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
}

.sd-faq-item {
    background: var(--sd-ice);
    border: 1px solid var(--sd-line-soft);
    border-radius: 12px;
    overflow: hidden;
}

.sd-faq-q {
    width: 100%;
    text-align: left;
    border: none;
    background: transparent;
    padding: 14px 16px;
    font-size: 14px;
    font-weight: 700;
    color: var(--sd-navy);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
    font-family: var(--sd-sans);
}

.sd-faq-q i {
    color: var(--sd-faint);
    font-size: 12px;
    transition: transform 0.25s ease;
}

.sd-faq-item.sd-open .sd-faq-q i {
    transform: rotate(180deg);
    color: var(--sd-navy);
}

.sd-faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.sd-faq-a p {
    margin: 0;
    padding: 0 16px 14px;
    font-size: 13px;
    line-height: 1.9;
    color: var(--sd-muted);
}

.sd-faq-item.sd-open .sd-faq-a {
    max-height: 240px;
}

/* ---------- 底部控制台 final-cta ---------- */
.sd-final {
    background: linear-gradient(135deg, var(--sd-navy-deep), var(--sd-navy));
    color: #fff;
    padding: 56px 0;
}

.sd-final-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    align-items: center;
}

.sd-final h2 {
    font-size: 26px;
    margin: 0 0 12px;
    font-weight: 800;
}

.sd-final p {
    color: rgba(255, 255, 255, 0.82);
    line-height: 1.9;
    margin: 0;
    max-width: 560px;
}

.sd-final-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 20px;
}

.sd-final-figure {
    margin: 0;
    border-radius: var(--sd-radius);
    overflow: hidden;
    box-shadow: var(--sd-shadow);
}

.sd-final-figure img {
    width: 100%;
    display: block;
    aspect-ratio: 16 / 9;
    object-fit: cover;
}

/* ---------- Footer sports-telemetry-footer ---------- */
.sd-footer {
    background: var(--sd-navy-deep);
    color: rgba(255, 255, 255, 0.78);
    padding: 44px 0 24px;
}

.sd-footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

.sd-footer-brand a {
    color: #fff;
    font-size: 18px;
    font-weight: 800;
    text-decoration: none;
}

.sd-footer-brand p {
    font-size: 13px;
    line-height: 1.8;
    margin: 10px 0 0;
    color: rgba(255, 255, 255, 0.6);
}

.sd-footer-col h3 {
    font-size: 13px;
    color: var(--sd-signal);
    margin: 0 0 12px;
    font-weight: 700;
}

.sd-footer-col a {
    display: block;
    color: rgba(255, 255, 255, 0.78);
    text-decoration: none;
    font-size: 13px;
    margin-bottom: 8px;
}

.sd-footer-col a:hover {
    color: var(--sd-signal);
}

.sd-footer-note {
    font-size: 12px;
    line-height: 1.9;
    color: rgba(255, 255, 255, 0.55);
    margin: 0;
}

.sd-footer-bottom {
    margin-top: 28px;
    padding-top: 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: space-between;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.45);
}

/* ---------- 内页:页头与通用 ---------- */
.sd-page-hero {
    background: var(--sd-navy);
    color: #fff;
    padding: 46px 0;
}

.sd-page-hero-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 22px;
    align-items: center;
}

.sd-breadcrumb {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.7);
}

.sd-breadcrumb a {
    color: var(--sd-signal);
    text-decoration: none;
}

.sd-page-hero h2 {
    margin: 12px 0 12px;
    font-size: 28px;
    font-weight: 800;
    line-height: 1.35;
}

.sd-page-hero p {
    color: rgba(255, 255, 255, 0.82);
    line-height: 1.9;
    font-size: 15px;
    max-width: 620px;
    margin: 0;
}

.sd-page-hero-figure {
    margin: 0;
    border-radius: var(--sd-radius);
    overflow: hidden;
    box-shadow: var(--sd-shadow);
}

.sd-page-hero-figure img {
    width: 100%;
    display: block;
    aspect-ratio: 16 / 9;
    object-fit: cover;
}

.sd-prose h2 {
    font-size: 22px;
    color: var(--sd-navy);
    margin: 0 0 10px;
    font-weight: 800;
}

.sd-prose h3 {
    font-size: 18px;
    color: var(--sd-navy);
    margin: 0 0 8px;
}

.sd-prose p {
    color: var(--sd-muted);
    line-height: 1.9;
    font-size: 15px;
    margin: 0 0 14px;
}

/* ---------- 内页:about 流程与口径 ---------- */
.sd-about-intro-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    align-items: start;
}

.sd-pill-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.sd-pill {
    font-size: 12px;
    color: var(--sd-navy);
    background: rgba(16, 50, 92, 0.08);
    padding: 5px 12px;
    border-radius: 999px;
}

.sd-step-track {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
}

.sd-step {
    background: var(--sd-ice);
    border: 1px solid var(--sd-line-soft);
    border-radius: 12px;
    padding: 16px;
    box-shadow: var(--sd-shadow);
}

.sd-step-num {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--sd-navy);
    color: var(--sd-signal);
    font-family: var(--sd-mono);
    font-size: 13px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

.sd-step h4 {
    margin: 10px 0 6px;
    font-size: 15px;
    color: var(--sd-navy);
}

.sd-step p {
    margin: 0;
    font-size: 13px;
    line-height: 1.8;
    color: var(--sd-muted);
}

.sd-spec-list {
    background: var(--sd-ice);
    border: 1px solid var(--sd-line-soft);
    border-radius: var(--sd-radius);
    box-shadow: var(--sd-shadow);
    overflow: hidden;
}

.sd-spec-row {
    display: grid;
    grid-template-columns: 150px 1fr;
    gap: 16px;
    padding: 14px 18px;
    border-bottom: 1px solid var(--sd-line-soft);
}

.sd-spec-row:last-child {
    border-bottom: none;
}

.sd-spec-row dt {
    font-family: var(--sd-mono);
    font-size: 13px;
    font-weight: 700;
    color: var(--sd-navy);
}

.sd-spec-row dd {
    margin: 0;
    font-size: 14px;
    color: var(--sd-muted);
    line-height: 1.8;
}

.sd-boundary-list {
    display: grid;
    gap: 10px;
    margin-top: 18px;
}

.sd-boundary-item {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    background: var(--sd-ice);
    border: 1px solid var(--sd-line-soft);
    border-radius: 12px;
    padding: 14px 16px;
}

.sd-boundary-item i {
    color: var(--sd-signal-ink);
    background: rgba(55, 224, 127, 0.18);
    border-radius: 8px;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    flex: none;
}

.sd-boundary-item b {
    display: block;
    font-size: 14px;
    color: var(--sd-navy);
    margin-bottom: 2px;
}

.sd-boundary-item span {
    font-size: 13px;
    color: var(--sd-muted);
    line-height: 1.8;
}

/* ---------- 内页:product 矩阵与分组 ---------- */
.sd-matrix-wrap {
    overflow-x: auto;
    background: var(--sd-ice);
    border: 1px solid var(--sd-line-soft);
    border-radius: var(--sd-radius);
    box-shadow: var(--sd-shadow);
}

.sd-matrix {
    width: 100%;
    min-width: 720px;
    border-collapse: collapse;
    font-size: 14px;
}

.sd-matrix th,
.sd-matrix td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--sd-line-soft);
    white-space: nowrap;
}

.sd-matrix th {
    font-size: 12px;
    color: var(--sd-faint);
}

.sd-matrix td {
    color: var(--sd-graphite);
}

.sd-matrix tr:last-child td {
    border-bottom: none;
}

.sd-matrix .sd-num {
    font-family: var(--sd-mono);
    color: var(--sd-navy);
    font-weight: 700;
}

.sd-zone-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
}

.sd-zone-card {
    background: var(--sd-ice);
    border: 1px solid var(--sd-line-soft);
    border-radius: var(--sd-radius);
    padding: 20px;
    box-shadow: var(--sd-shadow);
}

.sd-zone-card h3 {
    margin: 0 0 8px;
    font-size: 16px;
    color: var(--sd-navy);
}

.sd-zone-card p {
    margin: 0;
    font-size: 14px;
    color: var(--sd-muted);
    line-height: 1.8;
}

.sd-zone-figure {
    margin: 14px 0 0;
    border-radius: 12px;
    overflow: hidden;
}

.sd-zone-figure img {
    width: 100%;
    display: block;
    aspect-ratio: 16 / 9;
    object-fit: cover;
}

.sd-steps-list {
    display: grid;
    gap: 10px;
    margin-top: 18px;
    counter-reset: sdstep;
    list-style: none;
    padding: 0;
}

.sd-steps-list li {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    background: var(--sd-ice);
    border: 1px solid var(--sd-line-soft);
    border-radius: 12px;
    padding: 14px 16px;
}

.sd-steps-list li::before {
    counter-increment: sdstep;
    content: counter(sdstep);
    font-family: var(--sd-mono);
    font-weight: 800;
    color: var(--sd-navy);
    background: rgba(16, 50, 92, 0.08);
    border-radius: 8px;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex: none;
    font-size: 13px;
}

.sd-version-band {
    background: var(--sd-navy);
    color: #fff;
    border-radius: var(--sd-radius);
    padding: 22px;
}

.sd-version-band h3 {
    margin: 0 0 8px;
    font-size: 16px;
    color: var(--sd-signal);
}

.sd-version-band p {
    margin: 0;
    color: rgba(255, 255, 255, 0.82);
    line-height: 1.9;
    font-size: 14px;
}

/* ---------- 内页:news 观察与专题 ---------- */
.sd-obs-list {
    display: grid;
    gap: 12px;
}

.sd-obs-item {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
    background: var(--sd-ice);
    border: 1px solid var(--sd-line-soft);
    border-radius: 12px;
    padding: 16px 18px;
}

.sd-obs-date {
    font-family: var(--sd-mono);
    font-size: 13px;
    color: var(--sd-faint);
    white-space: nowrap;
}

.sd-obs-tag {
    display: inline-block;
    font-size: 11px;
    color: var(--sd-navy);
    background: rgba(16, 50, 92, 0.08);
    padding: 3px 10px;
    border-radius: 999px;
    margin-bottom: 6px;
}

.sd-obs-item h3 {
    margin: 4px 0 6px;
    font-size: 16px;
    color: var(--sd-navy);
}

.sd-obs-item p {
    margin: 0;
    font-size: 14px;
    color: var(--sd-muted);
    line-height: 1.9;
}

.sd-feature-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
}

.sd-feature-card {
    background: var(--sd-ice);
    border: 1px solid var(--sd-line-soft);
    border-radius: var(--sd-radius);
    overflow: hidden;
    box-shadow: var(--sd-shadow);
}

.sd-feature-card img {
    width: 100%;
    display: block;
    aspect-ratio: 16 / 10;
    object-fit: cover;
}

.sd-feature-body {
    padding: 16px;
}

.sd-feature-body h3 {
    margin: 0 0 6px;
    font-size: 16px;
    color: var(--sd-navy);
}

.sd-feature-body p {
    margin: 0;
    font-size: 14px;
    color: var(--sd-muted);
    line-height: 1.8;
}

.sd-rank-split {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
}

.sd-rank-list {
    background: var(--sd-ice);
    border: 1px solid var(--sd-line-soft);
    border-radius: var(--sd-radius);
    box-shadow: var(--sd-shadow);
    overflow: hidden;
}

.sd-rank-head {
    padding: 12px 16px;
    font-size: 13px;
    font-weight: 700;
    color: var(--sd-navy);
    border-bottom: 1px solid var(--sd-line-soft);
    background: rgba(16, 50, 92, 0.04);
}

.sd-rank-row {
    display: grid;
    grid-template-columns: 44px 1fr auto;
    gap: 12px;
    align-items: center;
    padding: 12px 16px;
    border-bottom: 1px solid var(--sd-line-soft);
}

.sd-rank-row:last-child {
    border-bottom: none;
}

.sd-rank-no {
    font-family: var(--sd-mono);
    color: var(--sd-navy);
    font-weight: 800;
}

.sd-rank-val {
    font-family: var(--sd-mono);
    color: var(--sd-navy);
    font-weight: 700;
}

.sd-summary-list {
    display: grid;
    gap: 10px;
}

.sd-summary-item {
    display: flex;
    gap: 12px;
    align-items: center;
    background: var(--sd-ice);
    border: 1px solid var(--sd-line-soft);
    border-radius: 12px;
    padding: 12px 16px;
    font-size: 14px;
    color: var(--sd-graphite);
}

.sd-summary-item i {
    color: var(--sd-navy);
    flex: none;
}

.sd-archive-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.sd-archive-chip {
    font-size: 13px;
    color: var(--sd-navy);
    background: var(--sd-ice);
    border: 1px solid var(--sd-line);
    padding: 6px 14px;
    border-radius: 999px;
}

/* ---------- 内页:contact 分类路由 ---------- */
.sd-route-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
}

.sd-route-card {
    background: var(--sd-ice);
    border: 1px solid var(--sd-line-soft);
    border-radius: var(--sd-radius);
    padding: 20px;
    box-shadow: var(--sd-shadow);
}

.sd-route-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: var(--sd-navy);
    color: var(--sd-signal);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

.sd-route-card h3 {
    margin: 12px 0 8px;
    font-size: 16px;
    color: var(--sd-navy);
}

.sd-route-card p {
    margin: 0;
    font-size: 14px;
    color: var(--sd-muted);
    line-height: 1.8;
}

.sd-self-tools {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
}

.sd-self-tool {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--sd-ice);
    border: 1px solid var(--sd-line-soft);
    border-radius: 12px;
    padding: 16px;
    text-decoration: none;
    color: var(--sd-navy);
    font-weight: 700;
    box-shadow: var(--sd-shadow);
}

.sd-self-tool i {
    color: var(--sd-signal-ink);
    background: rgba(55, 224, 127, 0.18);
    border-radius: 10px;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex: none;
}

.sd-rule-list {
    display: grid;
    gap: 10px;
    margin-top: 18px;
}

.sd-rule-item {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    background: var(--sd-ice);
    border: 1px solid var(--sd-line-soft);
    border-radius: 12px;
    padding: 14px 16px;
    font-size: 14px;
    color: var(--sd-muted);
    line-height: 1.8;
}

.sd-rule-item i {
    color: var(--sd-navy);
    margin-top: 4px;
    flex: none;
}

/* ---------- 区块淡入 ---------- */
.sd-js .sd-reveal {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.55s ease, transform 0.55s ease;
}

.sd-js .sd-reveal.sd-in {
    opacity: 1;
    transform: none;
}

/* ---------- 响应式断点 ---------- */
@media (max-width: 767px) {
    .sd-hero {
        padding: 32px 0 0;
    }

    .sd-hero-title {
        font-size: 26px;
    }

    .sd-section {
        padding: 40px 0;
    }

    .sd-final {
        padding: 40px 0;
    }

    .sd-panel-trend {
        width: 54%;
    }

    .sd-spec-row {
        grid-template-columns: 1fr;
        gap: 4px;
    }

    .sd-topbar-meta {
        display: none;
    }

    .sd-brand-text {
        font-size: 16px;
    }

    .sd-stat-grid {
        grid-template-columns: 1fr 1fr;
    }

    .sd-stat-num {
        font-size: 22px;
    }
}

@media (min-width: 768px) {
    .sd-nav {
        display: flex;
    }

    .sd-nav-toggle {
        display: none;
    }

    .sd-hero-grid {
        grid-template-columns: 1fr 1fr;
    }

    .sd-hero-title {
        font-size: 38px;
    }

    .sd-league-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .sd-intel-grid {
        grid-template-columns: 1fr 1fr;
    }

    .sd-stat-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .sd-insight-split {
        grid-template-columns: 1.2fr 1fr;
    }

    .sd-chip-grid {
        grid-template-columns: repeat(5, 1fr);
    }

    .sd-tool-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .sd-mobile-grid {
        grid-template-columns: 320px 1fr;
    }

    .sd-notes-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .sd-faq-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .sd-final-grid {
        grid-template-columns: 1.1fr 1fr;
    }

    .sd-footer-grid {
        grid-template-columns: 1.4fr 1fr 1fr 1.6fr;
    }

    .sd-page-hero-grid {
        grid-template-columns: 1.2fr 1fr;
    }

    .sd-about-intro-grid {
        grid-template-columns: 1.1fr 1fr;
    }

    .sd-step-track {
        grid-template-columns: repeat(3, 1fr);
    }

    .sd-zone-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .sd-obs-item {
        grid-template-columns: 150px 1fr;
    }

    .sd-feature-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .sd-rank-split {
        grid-template-columns: 1fr 1fr;
    }

    .sd-route-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .sd-self-tools {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1440px) {
    .sd-container {
        max-width: 1320px;
    }

    .sd-hero-title {
        font-size: 44px;
    }

    .sd-section-head h2 {
        font-size: 30px;
    }

    .sd-league-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .sd-faq-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .sd-step-track {
        grid-template-columns: repeat(6, 1fr);
    }

    .sd-page-hero h2 {
        font-size: 32px;
    }
}