/* 三峡旅游网 · 门户国风外观（阶段2）
   仅覆盖 seo.php 服务端渲染的现有结构：legacy-header/nav/footer + home-* + cms-list-card。
   在 site.css 之后加载以覆盖旧旅行社紫色外观。
   主色 --brand 由 seo.php 依系统设置 site_theme_color 注入（执行标准 §11）。 */

:root {
    /* 国风设计令牌（取自墨刀原型 portal-home.css） */
    --gf-paper: #f7f1e5;        /* 宣纸底 */
    --gf-paper-soft: #fbf8f1;
    --gf-ink: #202018;          /* 主文字（暖墨） */
    --gf-muted: #706a5b;        /* 次文字 */
    --gf-line: #e3d7c0;         /* 暖描边 */
    --gf-jade: #206b5d;         /* 玉青（主色回退） */
    --gf-jade-dark: #15483f;
    --gf-gold: #b6873f;         /* 赭金强调 */
    --gf-gold-soft: #ead9b6;
    --gf-red: #a83a25;          /* 价格砖红 */
    --gf-shadow: 0 20px 48px rgba(59, 48, 28, .14);
    --gf-shadow-sm: 0 8px 22px rgba(59, 48, 28, .10);
    --gf-shell: 1250px;         /* 与 legacy-container 对齐 */
    --gf-kai: "STKaiti", "KaiTi", "楷体", serif;
    /* --brand 若 seo.php 未注入则回退玉青 */
    --brand: var(--gf-jade);
}

/* 页面底：宣纸渐层 */
body {
    background:
        radial-gradient(1200px 480px at 12% -6%, rgba(182, 135, 63, .10), transparent 60%),
        linear-gradient(180deg, #fbf7ed 0%, var(--gf-paper) 42%, #f5eddd 100%);
    color: var(--gf-ink);
    font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", Arial, sans-serif;
}

.home-page {
    background: transparent;
}

/* ---------- 头部 + 导航 ---------- */
.legacy-header {
    background: rgba(251, 248, 241, .92);
    backdrop-filter: saturate(1.05) blur(6px);
    border-bottom: 1px solid var(--gf-line);
    box-shadow: none;
    position: sticky;
    top: 0;
    z-index: 30;
}

.legacy-top-main {
    background: transparent;
    padding: 14px 0;
}

.legacy-logo {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
}

.legacy-logo-text {
    font-family: var(--gf-kai);
    font-size: 26px;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--brand);
    line-height: 1;
}

.legacy-nav {
    background: transparent;
    border-top: 1px solid var(--gf-line);
}

.legacy-nav-inner {
    display: flex;
    gap: 6px;
    align-items: stretch;
    flex-wrap: wrap;
}

.legacy-nav-inner a {
    position: relative;
    padding: 14px 18px;
    color: var(--gf-ink);
    text-decoration: none;
    font-size: 16px;
    transition: color .18s ease;
}

.legacy-nav-inner a::after {
    content: "";
    position: absolute;
    left: 18px;
    right: 18px;
    bottom: 8px;
    height: 2px;
    background: var(--gf-gold);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform .2s ease;
}

.legacy-nav-inner a:hover {
    color: var(--brand);
}

.legacy-nav-inner a.active {
    color: var(--brand);
    font-weight: 700;
}

.legacy-nav-inner a.active::after,
.legacy-nav-inner a:hover::after {
    transform: scaleX(1);
}

/* ---------- 首页 Hero ---------- */
.home-hero {
    position: relative;
    padding: 72px 0 64px;
    background:
        radial-gradient(760px 320px at 82% 10%, rgba(32, 107, 93, .10), transparent 62%),
        linear-gradient(180deg, var(--gf-paper-soft) 0%, rgba(247, 241, 229, .35) 100%);
    border-bottom: 1px solid var(--gf-line);
    overflow: hidden;
}

.home-hero::before {
    content: "三峡";
    position: absolute;
    right: 4%;
    top: 50%;
    transform: translateY(-50%);
    font-family: var(--gf-kai);
    font-size: 168px;
    line-height: 1;
    color: rgba(32, 107, 93, .06);
    letter-spacing: 8px;
    pointer-events: none;
    user-select: none;
}

.home-hero-inner {
    position: relative;
    z-index: 1;
}

.home-hero .seo-h1 {
    font-family: var(--gf-kai);
    font-size: 44px;
    line-height: 1.2;
    color: var(--gf-ink);
    margin: 0 0 14px;
    letter-spacing: 2px;
}

.home-hero .seo-h1::after {
    content: "";
    display: block;
    width: 64px;
    height: 3px;
    margin-top: 16px;
    background: linear-gradient(90deg, var(--gf-gold), transparent);
}

.home-hero-sub {
    max-width: 640px;
    font-size: 17px;
    line-height: 1.9;
    color: var(--gf-muted);
    margin: 0;
}

/* ---------- 通用区块 ---------- */
.home-section {
    padding: 60px 0;
    background: transparent;
}

.home-section + .home-section {
    border-top: 1px solid rgba(227, 215, 192, .6);
}

.home-section-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 30px;
}

.home-section-head h2 {
    position: relative;
    font-family: var(--gf-kai);
    font-size: 28px;
    color: var(--gf-ink);
    margin: 0;
    padding-left: 16px;
    letter-spacing: 2px;
}

.home-section-head h2::before {
    content: "";
    position: absolute;
    left: 0;
    top: 6px;
    bottom: 6px;
    width: 4px;
    border-radius: 2px;
    background: linear-gradient(180deg, var(--brand), var(--gf-gold));
}

.home-more {
    flex: none;
    font-size: 14px;
    color: var(--brand);
    text-decoration: none;
    padding-bottom: 4px;
    border-bottom: 1px solid transparent;
    transition: border-color .18s ease;
}

.home-more:hover {
    border-bottom-color: var(--gf-gold);
}

/* hero 带照片：右侧照片、左侧宣纸罩确保暗色标题可读（对比度 >= 4.5:1） */
.home-hero--photo {
    background-size: cover;
    background-position: center right;
    background-repeat: no-repeat;
}

.home-hero--photo::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(
        100deg,
        rgba(250, 246, 238, .97) 0%,
        rgba(250, 246, 238, .90) 34%,
        rgba(250, 246, 238, .55) 58%,
        rgba(250, 246, 238, .12) 100%);
    z-index: 0;
}

.home-hero--photo .home-hero::before,
.home-hero--photo::before {
    display: none;
}

/* ---------- 产品：跟团游卡片 ---------- */
.home-product-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.home-product-card {
    display: flex;
    flex-direction: column;
    background: var(--gf-paper-soft);
    border: 1px solid var(--gf-line);
    border-radius: 14px;
    overflow: hidden;
    box-shadow: var(--gf-shadow-sm);
    transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}

.home-product-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--gf-shadow);
    border-color: var(--gf-gold-soft);
}

.home-product-media {
    display: block;
    aspect-ratio: 4 / 3;
    background: linear-gradient(135deg, #efe6d2, #e3d7c0);
    overflow: hidden;
}

.home-product-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform .35s ease;
}

.home-product-card:hover .home-product-media img {
    transform: scale(1.04);
}

.home-product-copy {
    padding: 16px 18px 18px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex: 1;
}

.home-product-copy h3 {
    font-size: 17px;
    line-height: 1.5;
    margin: 0;
    color: var(--gf-ink);
}

.home-product-copy h3 a {
    color: inherit;
    text-decoration: none;
}

.home-product-copy h3 a:hover {
    color: var(--brand);
}

.home-product-price {
    margin: auto 0 0;
    color: var(--gf-muted);
    font-size: 13px;
    display: flex;
    align-items: baseline;
    gap: 4px;
}

.home-product-price strong {
    color: var(--gf-red);
    font-size: 22px;
    font-weight: 700;
}

/* ---------- 资讯 / 攻略：图文列表卡 ---------- */
.home-articles .cms-list-stack {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 22px;
}

.home-articles .cms-list-card {
    display: flex;
    gap: 16px;
    background: var(--gf-paper-soft);
    border: 1px solid var(--gf-line);
    border-radius: 14px;
    padding: 14px;
    box-shadow: var(--gf-shadow-sm);
    transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}

.home-articles .cms-list-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--gf-shadow);
    border-color: var(--gf-gold-soft);
}

.home-articles .cms-list-media {
    flex: 0 0 140px;
    width: 140px;
    aspect-ratio: 4 / 3;
    border-radius: 10px;
    overflow: hidden;
    background: linear-gradient(135deg, #efe6d2, #e3d7c0);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gf-muted);
    font-family: var(--gf-kai);
    text-decoration: none;
}

.home-articles .cms-list-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.home-articles .cms-list-copy {
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-width: 0;
}

.home-articles .cms-list-meta {
    display: flex;
    gap: 12px;
    font-size: 12px;
    color: var(--gf-muted);
}

.home-articles .cms-list-meta span {
    color: var(--brand);
}

.home-articles .cms-list-copy h2 {
    font-size: 17px;
    line-height: 1.5;
    margin: 0;
}

.home-articles .cms-list-copy h2 a {
    color: var(--gf-ink);
    text-decoration: none;
}

.home-articles .cms-list-copy h2 a:hover {
    color: var(--brand);
}

.home-articles .cms-list-copy p {
    margin: 0;
    font-size: 13px;
    line-height: 1.7;
    color: var(--gf-muted);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ---------- 服务入口 ---------- */
.home-service-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.home-service-card {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 96px;
    padding: 20px;
    border-radius: 14px;
    text-decoration: none;
    background:
        linear-gradient(135deg, rgba(32, 107, 93, .05), rgba(182, 135, 63, .05)),
        var(--gf-paper-soft);
    border: 1px solid var(--gf-line);
    box-shadow: var(--gf-shadow-sm);
    transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}

.home-service-card::before {
    content: "";
    position: absolute;
    left: 0;
    top: 16px;
    bottom: 16px;
    width: 3px;
    border-radius: 2px;
    background: linear-gradient(180deg, var(--brand), var(--gf-gold));
}

.home-service-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--gf-shadow);
    border-color: var(--gf-gold-soft);
}

.home-service-card h3 {
    margin: 0;
    font-family: var(--gf-kai);
    font-size: 20px;
    letter-spacing: 3px;
    color: var(--gf-ink);
}

.home-service-card:hover h3 {
    color: var(--brand);
}

/* ---------- 页脚 ---------- */
.legacy-footer {
    margin-top: 8px;
    background:
        radial-gradient(900px 300px at 85% 0%, rgba(182, 135, 63, .14), transparent 60%),
        linear-gradient(180deg, var(--gf-jade-dark) 0%, #10362f 100%);
    color: rgba(247, 241, 229, .82);
    border-top: 3px solid var(--gf-gold);
    padding: 44px 0 32px;
}

.legacy-footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr auto;
    gap: 32px 40px;
    align-items: start;
}

.legacy-footer-friends {
    grid-column: 1 / -1;
    border-top: 1px solid rgba(247, 241, 229, .14);
    padding-top: 20px;
    margin-top: 4px;
}

.legacy-footer-brand-name {
    display: block;
    font-family: var(--gf-kai);
    font-size: 24px;
    letter-spacing: 3px;
    color: #fff;
    margin-bottom: 10px;
}

.legacy-footer-brand p {
    margin: 0;
    line-height: 1.9;
    color: rgba(247, 241, 229, .72);
}

.legacy-footer h2 {
    font-size: 16px;
    color: var(--gf-gold-soft);
    margin: 0 0 14px;
    font-weight: 600;
    letter-spacing: 1px;
}

.legacy-footer ul {
    list-style: none;
    margin: 0;
    padding: 0;
    line-height: 2;
}

.legacy-footer a {
    color: rgba(247, 241, 229, .82);
    text-decoration: none;
}

.legacy-footer a:hover {
    color: #fff;
}

.legacy-footer-friend-list {
    display: flex;
    flex-wrap: wrap;
    gap: 6px 20px;
    line-height: 1.8;
}

.legacy-footer-friend-list li {
    position: relative;
    padding-right: 20px;
}

.legacy-footer-friend-list li:not(:last-child)::after {
    content: "";
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 1px;
    height: 12px;
    background: rgba(247, 241, 229, .28);
}

.legacy-footer-qr {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.legacy-footer-qr-item {
    margin: 0;
    text-align: center;
}

.legacy-footer-qr-item img {
    width: 96px;
    height: 96px;
    object-fit: cover;
    border-radius: 8px;
    background: #fff;
    padding: 4px;
}

.legacy-footer-qr-item figcaption {
    margin-top: 8px;
    font-size: 13px;
    color: rgba(247, 241, 229, .72);
}

/* ---------- 专题列表 ---------- */
.topic-list-page .home-section-head .seo-h1 {
    font-family: var(--gf-kai);
    font-size: 30px;
    margin: 0;
    color: var(--gf-ink);
    letter-spacing: 3px;
}

.topic-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.topic-card {
    display: flex;
    flex-direction: column;
    background: var(--gf-paper-soft);
    border: 1px solid var(--gf-line);
    border-radius: 14px;
    overflow: hidden;
    box-shadow: var(--gf-shadow-sm);
    transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}

.topic-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--gf-shadow);
    border-color: var(--gf-gold-soft);
}

.topic-card-media {
    display: block;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: linear-gradient(135deg, #efe6d2, #e3d7c0);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gf-muted);
    font-family: var(--gf-kai);
    text-decoration: none;
}

.topic-card-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .35s ease;
}

.topic-card:hover .topic-card-media img {
    transform: scale(1.04);
}

.topic-card-copy {
    padding: 16px 18px 18px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.topic-card-copy h2 {
    font-family: var(--gf-kai);
    font-size: 19px;
    margin: 0;
    letter-spacing: 1px;
}

.topic-card-copy h2 a {
    color: var(--gf-ink);
    text-decoration: none;
}

.topic-card-copy h2 a:hover {
    color: var(--brand);
}

.topic-card-copy p {
    margin: 0;
    font-size: 13px;
    line-height: 1.7;
    color: var(--gf-muted);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.topic-empty {
    padding: 48px 0;
    text-align: center;
    color: var(--gf-muted);
    font-size: 15px;
}

/* ---------- 专题详情（装修画布） ---------- */
.topic-detail-page {
    padding: 40px 0 56px;
}

.topic-detail-title {
    font-family: var(--gf-kai);
    font-size: 34px;
    letter-spacing: 3px;
    color: var(--gf-ink);
    margin: 0 0 24px;
    text-align: center;
}

.topic-canvas {
    display: flex;
    flex-direction: column;
    gap: 16px;
    max-width: 1000px;
    margin: 0 auto;
}

.topic-poster {
    position: relative;
    width: 100%;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--gf-shadow-sm);
}

.topic-poster-bg {
    display: block;
    width: 100%;
    height: auto;
}

.topic-layer {
    position: absolute;
    box-sizing: border-box;
    overflow: hidden;
}

.topic-layer-text {
    padding: 6px 10px;
    display: block;
    text-decoration: none;
    white-space: pre-line;
}

.topic-layer-image img,
.topic-layer-video video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.topic-layer-link {
    display: block;
}

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
    .topic-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .home-articles .cms-list-stack {
        grid-template-columns: 1fr;
    }

    .home-service-grid {
        grid-template-columns: 1fr;
    }

    .legacy-footer-grid {
        grid-template-columns: 1fr;
    }

    .home-hero .seo-h1 {
        font-size: 34px;
    }

    .home-hero::before {
        font-size: 108px;
    }
}

@media (max-width: 600px) {
    .home-section {
        padding: 40px 0;
    }

    .topic-grid {
        grid-template-columns: 1fr;
    }

    .home-hero {
        padding: 52px 0 44px;
    }

    .home-product-grid {
        grid-template-columns: 1fr;
    }

    .home-articles .cms-list-card {
        flex-direction: column;
    }

    .home-articles .cms-list-media {
        flex-basis: auto;
        width: 100%;
        aspect-ratio: 16 / 9;
    }

    .home-hero--photo::after {
        background: linear-gradient(
            180deg,
            rgba(250, 246, 238, .92) 0%,
            rgba(250, 246, 238, .82) 60%,
            rgba(250, 246, 238, .55) 100%);
    }
}