/* 钓鱼钓鱼 · 新版官网（独立样式，不影响旧 index） */

:root {
    /* 品牌撞色基色 */
    --oh-brand-gold: #d2b116;
    --oh-brand-green: #789262;
    --oh-brand-green-deep: #4a5c40;
    --oh-brand-gold-deep: #9a8210;
    /* 页底透出用浅色（渐变末端透明后落在此色上） */
    --oh-bg: #f5f4ef;
    --oh-bg2: #eeede6;
    --oh-surface: rgba(255, 255, 255, 0.72);
    --oh-surface-strong: rgba(255, 255, 255, 0.9);
    --oh-ink: #3d4f4a;
    --oh-ink-soft: #5c6e68;
    --oh-accent: #7eb8a8;
    --oh-accent2: #e8a598;
    --oh-line: rgba(61, 79, 74, 0.12);
    --oh-shadow: 0 12px 40px rgba(45, 74, 68, 0.08);
    --oh-radius: 16px;
    --oh-font: "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    /* 顶栏与主内容区左右对齐（与 .oh-main 一致） */
    --oh-page-gutter: clamp(12px, 3.5vw, 20px);
}

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

html {
    scroll-behavior: smooth;
    /* 避免「有/无纵向滚动条」时 100vw/92vw 与可用宽度不一致，导致顶栏与子页错位几个像素 */
    scrollbar-gutter: stable;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: var(--oh-font);
    color: var(--oh-ink);
    /* 整页大背景：撞色、自上而下的深 → 浅 → 透明（透明处透出 background-color） */
    background-color: var(--oh-bg);
    /* 中段少黄、偏绿灰过渡（左上金光保持 body::before 原版强度） */
    background-image: linear-gradient(
        180deg,
        #2e3829 0%,
        var(--oh-brand-green-deep) 6%,
        rgba(74, 92, 64, 0.92) 14%,
        rgba(90, 108, 72, 0.72) 24%,
        rgba(120, 146, 98, 0.52) 38%,
        rgba(105, 122, 92, 0.38) 50%,
        rgba(130, 142, 118, 0.22) 62%,
        rgba(225, 223, 214, 0.35) 76%,
        rgba(245, 244, 239, 0.12) 90%,
        transparent 100%
    );
    background-repeat: no-repeat;
    background-size: 100% 100%;
    background-attachment: fixed;
    position: relative;
    overflow-x: hidden;
}

body::before {
    content: "";
    position: fixed;
    inset: -20% -10%;
    /* 与品牌色呼应的柔光，不破坏主纵向渐变 */
    background:
        radial-gradient(ellipse 55% 42% at 18% 8%, rgba(210, 177, 22, 0.2), transparent 52%),
        radial-gradient(ellipse 48% 38% at 82% 12%, rgba(120, 146, 98, 0.22), transparent 48%),
        radial-gradient(ellipse 70% 50% at 50% 0%, rgba(46, 56, 41, 0.35), transparent 55%),
        radial-gradient(ellipse 65% 55% at 50% 100%, rgba(255, 255, 255, 0.14), transparent 45%);
    animation: oh-bg-drift 28s ease-in-out infinite alternate;
    pointer-events: none;
    z-index: 0;
}

@keyframes oh-bg-drift {
    0% { transform: translate3d(0, 0, 0) scale(1); }
    100% { transform: translate3d(-2%, 1%, 0) scale(1.03); }
}

.oh-sheen {
    position: fixed;
    inset: 0;
    /* 扫光改偏中性，减少画面中部「一片黄」 */
    background: linear-gradient(
        120deg,
        transparent 38%,
        rgba(255, 255, 255, 0.14) 48%,
        rgba(255, 255, 255, 0.2) 52%,
        transparent 62%
    );
    background-size: 200% 200%;
    animation: oh-sheen-move 12s ease-in-out infinite;
    pointer-events: none;
    z-index: 0;
    opacity: 0.28;
}

@keyframes oh-sheen-move {
    0% { background-position: 0% 50%; }
    100% { background-position: 100% 50%; }
}

.oh-deco {
    position: fixed;
    pointer-events: none;
    z-index: 0;
    opacity: 0.45;
}

.oh-deco--fish {
    width: 48px;
    height: 22px;
    left: 8%;
    top: 22%;
    border-radius: 50% 60% 60% 50% / 50% 50% 55% 55%;
    background: linear-gradient(90deg, rgba(120, 146, 98, 0.55), rgba(210, 177, 22, 0.2));
    box-shadow: inset -4px 0 0 rgba(255, 255, 255, 0.35);
    animation: oh-swim 14s ease-in-out infinite;
}

.oh-deco--fish::after {
    content: "";
    position: absolute;
    right: -10px;
    top: 4px;
    border: 8px solid transparent;
    border-left: 12px solid rgba(120, 146, 98, 0.5);
}

.oh-deco--fish2 {
    left: auto;
    right: 12%;
    top: 38%;
    transform: scaleX(-1);
    animation-duration: 18s;
    animation-delay: -4s;
    opacity: 0.35;
}

.oh-deco--bubble {
    width: 120px;
    height: 120px;
    right: 18%;
    bottom: 12%;
    border: 1px solid rgba(120, 146, 98, 0.28);
    border-radius: 50%;
    animation: oh-float 9s ease-in-out infinite;
}

.oh-deco--bubble::before,
.oh-deco--bubble::after {
    content: "";
    position: absolute;
    border: 1px solid rgba(210, 177, 22, 0.18);
    border-radius: 50%;
    inset: 18%;
    animation: oh-float 11s ease-in-out infinite reverse;
}

@keyframes oh-swim {
    0%, 100% { transform: translate3d(0, 0, 0); }
    50% { transform: translate3d(18vw, 6px, 0); }
}

@keyframes oh-float {
    0%, 100% { transform: translate3d(0, 0, 0); opacity: 0.35; }
    50% { transform: translate3d(0, -12px, 0); opacity: 0.55; }
}

.oh-app {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* 顶栏以下主区域：承载适龄提示定位 + 正文；flex 撑满使封底贴底 */
.oh-body-surface {
    position: relative;
    flex: 1 0 auto;
    min-height: 50vh;
}

/* CADPA 适龄提示：主内容区右上（大致对应你标的红框区域） */
.oh-age-badge {
    position: absolute;
    top: 0.75rem;
    right: clamp(10px, 3.5vw, 28px);
    z-index: 2;
    margin: 0;
    padding: 0;
    line-height: 0;
    pointer-events: none;
}

.oh-age-badge__img {
    display: block;
    width: auto;
    height: auto;
    /* 控制展示尺寸：像素远小于原图时带宽仍只传这一份文件，由浏览器缩放 */
    max-height: clamp(96px, 26vw, 132px);
    max-width: min(104px, 28vw);
    object-fit: contain;
    /* 不用圆角：避免裁到 PNG 自带黑边；不用向下 box-shadow，易看成「底下多了一块台子」 */
    border-radius: 0;
    box-shadow: none;
}

@media (max-width: 860px) {
    .oh-age-badge {
        top: 0.5rem;
        right: clamp(8px, 2.5vw, 16px);
    }

    .oh-age-badge__img {
        max-height: clamp(88px, 30vw, 120px);
        max-width: min(92px, 32vw);
    }
}

/* 首页主栏：顶部大横幅 + 公告栏 */
.oh-main {
    min-height: 50vh;
    width: 100%;
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 var(--oh-page-gutter) 2rem;
    box-sizing: border-box;
}

/* —— 全宽大横幅（参考：风景底图 + 暗遮罩 + 居中白字 + 双按钮） */
.oh-hero-banner {
    position: relative;
    width: 100vw;
    max-width: 100vw;
    margin-left: calc(50% - 50vw);
    margin-right: calc(50% - 50vw);
    min-height: clamp(15rem, 42vh, 26rem);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(20, 35, 45, 0.18);
}

/* 横幅顶部锚点（official-home.html#oh-download），避免与「立即下载」按钮 id 冲突 */
.oh-hash-anchor {
    position: absolute;
    left: 0;
    top: 0;
    width: 0;
    height: 0;
    scroll-margin-top: 5rem;
    pointer-events: none;
}

.oh-hero-banner__media {
    position: absolute;
    inset: 0;
    background-color: #143d4a;
    background-image: linear-gradient(
        125deg,
        #0c3540 0%,
        #1a5f6e 38%,
        #2a8a9e 62%,
        #1e4a55 100%
    );
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
}

.oh-hero-banner__scrim {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        180deg,
        rgba(12, 22, 28, 0.38) 0%,
        rgba(10, 18, 26, 0.58) 45%,
        rgba(8, 14, 22, 0.68) 100%
    );
    pointer-events: none;
}

.oh-hero-banner__inner {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 1120px;
    margin: 0 auto;
    padding: clamp(1.75rem, 5vw, 2.75rem) clamp(1rem, 4vw, 1.5rem);
    text-align: center;
    box-sizing: border-box;
}

.oh-hero-banner__title {
    margin: 0 0 0.65rem;
    font-size: clamp(1.35rem, 4.2vw, 2.15rem);
    font-weight: 800;
    line-height: 1.25;
    letter-spacing: 0.02em;
    color: #fff;
    text-shadow: 0 2px 24px rgba(0, 0, 0, 0.35);
}

.oh-hero-banner__sub {
    margin: 0 auto 1.35rem;
    max-width: 36rem;
    font-size: clamp(0.9rem, 2.2vw, 1.05rem);
    font-weight: 500;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.92);
    text-shadow: 0 1px 12px rgba(0, 0, 0, 0.3);
}

.oh-hero-banner__cta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0.65rem 0.85rem;
}

.oh-hero-banner__btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 2.65rem;
    padding: 0 1.35rem;
    font-size: 0.92rem;
    font-weight: 700;
    text-decoration: none;
    border-radius: 999px;
    transition:
        transform 0.2s ease,
        box-shadow 0.2s ease,
        background 0.2s ease,
        color 0.2s ease,
        border-color 0.2s ease;
}

.oh-hero-banner__btn--primary {
    color: #fff;
    background: linear-gradient(180deg, #3b82f6 0%, #2563eb 100%);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 4px 18px rgba(37, 99, 235, 0.45);
}

.oh-hero-banner__btn--primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 22px rgba(37, 99, 235, 0.55);
}

.oh-hero-banner__btn--ghost {
    color: #e0f2fe;
    background: rgba(255, 255, 255, 0.14);
    border: 1px solid rgba(255, 255, 255, 0.45);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.oh-hero-banner__btn--ghost:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.22);
    border-color: rgba(255, 255, 255, 0.65);
    transform: translateY(-1px);
}

.oh-hero-banner__btn:focus-visible {
    outline: 2px solid #fff;
    outline-offset: 3px;
}

.oh-hero-banner + .oh-main-boards {
    margin-top: 1rem;
}

/* —— 下载页 · 下载中心（参考：白卡顶圆角 + 标题/DOWNLOAD + 浅蓝下载条） —— */
.oh-hero-banner + .oh-download-center {
    margin-top: clamp(-1.5rem, -3vw, -0.75rem);
    position: relative;
    z-index: 2;
}

.oh-download-center {
    width: 100%;
    max-width: 1120px;
    margin-left: auto;
    margin-right: auto;
    padding: 0 var(--oh-page-gutter) clamp(2rem, 4vw, 3rem);
    box-sizing: border-box;
}

.oh-download-center__card {
    background: #fff;
    border-radius: 20px 20px 0 0;
    box-shadow:
        0 -6px 32px rgba(20, 35, 45, 0.12),
        0 4px 24px rgba(20, 35, 45, 0.06);
    overflow: hidden;
}

.oh-download-center__head {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 0.5rem 1rem;
    padding: clamp(1.1rem, 2.8vw, 1.5rem) clamp(1.25rem, 3vw, 1.75rem) 0.75rem;
}

.oh-download-center__title {
    margin: 0;
    font-size: clamp(1.4rem, 3.4vw, 1.85rem);
    font-weight: 800;
    letter-spacing: 0.04em;
    color: #2a2f2e;
    line-height: 1.2;
}

.oh-download-center__en {
    font-family: Georgia, "Times New Roman", "Songti SC", serif;
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    color: #c5c9d0;
    line-height: 1;
}

.oh-download-center__action-bar {
    display: flex;
    align-items: center;
    gap: 0.65rem 0.85rem;
    margin: 0;
    padding: clamp(0.85rem, 2.2vw, 1.05rem) clamp(1.25rem, 3vw, 1.75rem);
    background: #f0f4ff;
    border-top: 1px solid #d0daff;
    border-bottom: 1px solid #d0daff;
    color: #3b5998;
    font-size: clamp(0.9rem, 2vw, 0.98rem);
    font-weight: 700;
}

.oh-download-center__action-icon {
    display: flex;
    flex-shrink: 0;
    color: #3b5998;
}

.oh-download-center__action-icon svg {
    display: block;
}

.oh-download-center__action-text {
    line-height: 1.35;
}

.oh-download-center__body {
    padding: clamp(1.1rem, 2.8vw, 1.5rem) clamp(1.25rem, 3vw, 1.75rem) clamp(1.35rem, 3vw, 1.85rem);
    color: var(--oh-ink, #3d4f4a);
}

.oh-download-center__lead {
    margin: 0 0 1.25rem;
    max-width: 40rem;
    font-size: 0.98rem;
    line-height: 1.7;
    color: #000;
}

/* 三列网格：略偏左的中缝放「红框」位二维码；右侧对话框+鸟人 */
.oh-download-center__row {
    display: grid;
    grid-template-columns: minmax(0, 0.6fr) auto minmax(0, 1.4fr);
    align-items: end;
    column-gap: clamp(1rem, 3vw, 2rem);
    margin: 0 0 clamp(1.5rem, 3vw, 2rem);
    min-height: min(260px, 48vw);
    min-width: 0;
}

/* 竖向占位区：与示意红框相近（窄而高），图在区内水平居中、沉底与右侧角色对齐 */
.oh-download-center__qrcode {
    grid-column: 2;
    justify-self: center;
    align-self: end;
    margin: 0;
    padding: 0;
    width: min(200px, 40vw);
    max-width: 100%;
    min-height: min(260px, 52vw);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    box-sizing: border-box;
}

.oh-download-center__qrcode img {
    display: block;
    max-width: 100%;
    width: auto;
    height: auto;
    max-height: min(300px, 58vw);
    object-fit: contain;
    object-position: center bottom;
    border-radius: 12px;
    border: 1px solid rgba(61, 79, 74, 0.12);
    box-shadow: 0 8px 28px rgba(45, 74, 68, 0.1);
    background: #fff;
}

/* 右侧列：对话框+鸟人靠右成组；底对齐 */
.oh-download-center__promo {
    grid-column: 3;
    justify-self: end;
    align-self: end;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: flex-end;
    justify-content: flex-end;
    gap: clamp(0.5rem, 2vw, 1.25rem);
    min-width: 0;
    min-height: min(248px, 46vw);
}

.oh-download-center__mascot {
    flex-shrink: 0;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    align-self: flex-end;
}

.oh-download-center__bubble {
    position: relative;
    margin: 0;
    padding: 0.75rem 1rem;
    max-width: min(17rem, 100%);
    background: #fff;
    border: 2px solid rgba(61, 79, 74, 0.14);
    border-radius: 14px;
    box-shadow: 0 6px 20px rgba(45, 74, 68, 0.1);
    align-self: flex-start;
    margin-top: 0;
}

/* 三角在右侧，指向鸟人（略偏上对准缩小后的头部区域） */
.oh-download-center__bubble::after {
    content: "";
    position: absolute;
    right: -8px;
    left: auto;
    top: 50%;
    width: 13px;
    height: 13px;
    margin-top: -7px;
    background: #fff;
    border-right: 2px solid rgba(61, 79, 74, 0.14);
    border-top: 2px solid rgba(61, 79, 74, 0.14);
    transform: rotate(45deg);
    box-sizing: border-box;
}

.oh-download-center__bubble-text {
    margin: 0;
    font-size: 0.9rem;
    font-weight: 600;
    line-height: 1.55;
    color: #000;
    text-align: left;
}

.oh-download-center__mascot-img {
    display: block;
    width: auto;
    max-width: min(195px, 39vw);
    height: auto;
    max-height: 208px;
    object-fit: contain;
    object-position: center center;
    filter: drop-shadow(0 6px 16px rgba(0, 0, 0, 0.12));
}

@media (max-width: 720px) {
    .oh-download-center__row {
        display: grid;
        grid-template-columns: 1fr;
        column-gap: 0;
        row-gap: clamp(1rem, 3vw, 1.5rem);
        min-height: 0;
    }

    .oh-download-center__qrcode {
        grid-column: 1;
        justify-self: center;
        width: auto;
        min-height: 0;
        display: block;
    }

    .oh-download-center__qrcode img {
        max-height: none;
        max-width: min(260px, 88vw);
    }

    .oh-download-center__promo {
        grid-column: 1;
        justify-self: end;
        width: 100%;
        justify-content: flex-end;
        flex-direction: column;
        flex-wrap: wrap;
        align-items: flex-end;
        min-height: 0;
    }

    /* 窄屏：先文字框（绿）再鸟人（蓝），三角朝下指向鸟人 */
    .oh-download-center__bubble {
        order: 1;
        max-width: min(17rem, 92vw);
        align-self: flex-end;
        margin-top: 0;
    }

    .oh-download-center__mascot {
        order: 2;
    }

    .oh-download-center__bubble::after {
        left: 50%;
        right: auto;
        top: auto;
        bottom: -8px;
        margin-left: -7px;
        margin-top: 0;
        border-right: 2px solid rgba(61, 79, 74, 0.14);
        border-bottom: 2px solid rgba(61, 79, 74, 0.14);
        border-left: none;
        border-top: none;
    }

    .oh-download-center__mascot-img {
        max-width: min(195px, 54vw);
        max-height: 208px;
    }
}

.oh-download-center__specs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(1rem, 3vw, 2rem);
    align-items: start;
}

@media (max-width: 640px) {
    .oh-download-center__specs {
        grid-template-columns: 1fr;
    }
}

.oh-download-center__spec-heading {
    margin: 0 0 0.65rem;
    font-size: 1.05rem;
    font-weight: 800;
    color: var(--oh-brand-green-deep, #4a5c40);
    padding-bottom: 0.35rem;
    border-bottom: 2px solid rgba(210, 177, 22, 0.45);
}

.oh-download-center__spec-list {
    margin: 0;
    padding: 0;
    list-style: none;
    font-size: 0.92rem;
    line-height: 1.65;
    color: var(--oh-ink, #3d4f4a);
}

.oh-download-center__spec-list li {
    margin: 0 0 0.4rem;
    padding-left: 0;
}

.oh-download-center__spec-k {
    display: inline-block;
    min-width: 6.5rem;
    font-weight: 700;
    color: var(--oh-ink-soft, #5c6e68);
}

.oh-download-center__spec-k::after {
    content: "：";
}

/* 公告栏 + 新闻栏 并列 */
.oh-main-boards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(0.65rem, 1.8vw, 1.1rem);
    align-items: start;
    width: 100%;
}

@media (max-width: 768px) {
    .oh-main-boards {
        grid-template-columns: 1fr;
    }
}

/* —— 公告栏 / 新闻栏：热点日历式白底卡 + 淡色子卡 + 左侧色条（新闻栏复用 __shell 等类名） */
.oh-notice-board,
.oh-news-board {
    min-width: 0;
    width: 100%;
    margin: 0;
}

.oh-notice-board__shell {
    background: #fff;
    border-radius: 16px;
    padding: 1.1rem 1.15rem 1.2rem;
    border: 1px solid rgba(45, 55, 45, 0.08);
    box-shadow:
        0 4px 24px rgba(35, 50, 40, 0.08),
        0 1px 3px rgba(0, 0, 0, 0.04);
}

.oh-notice-board__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    margin-bottom: 0.85rem;
    padding-bottom: 0.65rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.oh-notice-board__title {
    margin: 0;
    font-size: 1.05rem;
    font-weight: 800;
    letter-spacing: 0.04em;
    color: #2c332d;
}

.oh-notice-board__more {
    flex-shrink: 0;
    font-size: 0.8rem;
    font-weight: 600;
    color: #5a7a56;
    text-decoration: none;
    white-space: nowrap;
    transition: color 0.2s ease;
}

.oh-notice-board__more:hover {
    color: var(--oh-brand-gold-deep);
}

.oh-notice-board__more.is-muted {
    pointer-events: none;
    color: #9ca3af;
}

.oh-notice-board__list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
}

.oh-notice-board__item {
    margin: 0;
}

/* 子卡：淡底 + 左边竖条 + 角部装饰 */
.oh-notice-board__card {
    position: relative;
    display: flex;
    align-items: stretch;
    gap: 0;
    min-height: 3.35rem;
    padding: 0.65rem 0.85rem 0.65rem 0;
    border-radius: 12px;
    border: 1px solid rgba(0, 0, 0, 0.06);
    text-decoration: none;
    color: inherit;
    overflow: hidden;
    transition: box-shadow 0.2s ease, transform 0.2s ease;
}

a.oh-notice-board__card:hover {
    box-shadow: 0 6px 20px rgba(35, 55, 45, 0.1);
    transform: translateY(-1px);
}

.oh-notice-board__accent {
    flex-shrink: 0;
    width: 4px;
    margin-right: 0.7rem;
    border-radius: 0 3px 3px 0;
    align-self: stretch;
    min-height: 2.4rem;
}

.oh-notice-board__card-main {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 0.25rem;
    padding-right: 3rem;
    z-index: 1;
}

.oh-notice-board__card-title {
    font-size: 0.92rem;
    font-weight: 700;
    color: #1f2937;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.oh-notice-board__meta {
    font-size: 0.78rem;
    font-weight: 500;
    color: #6b7280;
    font-variant-numeric: tabular-nums;
}

.oh-notice-board__meta time {
    color: inherit;
}

/* 右上角淡色圆形装饰 */
.oh-notice-board__deco {
    position: absolute;
    right: -1.25rem;
    top: -1.25rem;
    width: 5rem;
    height: 5rem;
    border-radius: 50%;
    opacity: 0.22;
    pointer-events: none;
    z-index: 0;
}

/* 四色主题轮换（橙 / 青 / 紫 / 蓝） */
.oh-notice-board__item--a .oh-notice-board__card {
    background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 100%);
}

.oh-notice-board__item--a .oh-notice-board__accent {
    background: linear-gradient(180deg, #f59e0b, #ea580c);
}

.oh-notice-board__item--a .oh-notice-board__deco {
    background: radial-gradient(circle, #f59e0b 0%, transparent 70%);
}

.oh-notice-board__item--b .oh-notice-board__card {
    background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 100%);
}

.oh-notice-board__item--b .oh-notice-board__accent {
    background: linear-gradient(180deg, #2dd4bf, #0d9488);
}

.oh-notice-board__item--b .oh-notice-board__deco {
    background: radial-gradient(circle, #14b8a6 0%, transparent 70%);
}

.oh-notice-board__item--c .oh-notice-board__card {
    background: linear-gradient(135deg, #f5f3ff 0%, #ede9fe 100%);
}

.oh-notice-board__item--c .oh-notice-board__accent {
    background: linear-gradient(180deg, #a78bfa, #7c3aed);
}

.oh-notice-board__item--c .oh-notice-board__deco {
    background: radial-gradient(circle, #8b5cf6 0%, transparent 70%);
}

.oh-notice-board__item--d .oh-notice-board__card {
    background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
}

.oh-notice-board__item--d .oh-notice-board__accent {
    background: linear-gradient(180deg, #60a5fa, #2563eb);
}

.oh-notice-board__item--d .oh-notice-board__deco {
    background: radial-gradient(circle, #3b82f6 0%, transparent 70%);
}

/* 空状态 */
.oh-notice-board__item--empty .oh-notice-board__card {
    background: #f9fafb;
    cursor: default;
    pointer-events: none;
}

.oh-notice-board__item--empty .oh-notice-board__accent {
    background: #d1d5db;
}

.oh-notice-board__item--empty .oh-notice-board__deco {
    display: none;
}

@media (max-width: 520px) {
    .oh-notice-board__shell {
        padding: 0.95rem 1rem 1.05rem;
    }

    .oh-notice-board__title {
        font-size: 0.98rem;
    }
}

.oh-loading {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.125rem;
    color: var(--oh-ink-soft);
    background: rgba(255, 255, 255, 0.75);
    z-index: 50;
}

.oh-wrap {
    width: 100%;
    max-width: 1120px;
    margin: 0 auto;
}

/* Header — 深色条 + 导航白字 + 中英双行 */
.oh-header {
    position: sticky;
    top: 0;
    z-index: 40;
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    background: rgba(35, 44, 32, 0.88);
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    color: #fff;
}

.oh-header__inner {
    width: 100%;
    max-width: 1120px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.55rem var(--oh-page-gutter);
    min-height: 76px;
}

.oh-brand {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: #fff;
    flex-shrink: 0;
}

.oh-brand img {
    display: block;
    max-height: 56px;
    width: auto;
    object-fit: contain;
}

.oh-brand__placeholder {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 120px;
    height: 48px;
    padding: 0 12px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #fff;
    font-weight: 600;
    font-size: 0.9rem;
}

.oh-nav-toggle {
    display: none;
    margin-left: auto;
    border: 1px solid rgba(255, 255, 255, 0.35);
    background: rgba(255, 255, 255, 0.08);
    border-radius: 10px;
    padding: 0.45rem 0.75rem;
    font-size: 0.875rem;
    cursor: pointer;
    color: #fff;
}

.oh-nav {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.25rem 0.75rem;
    flex: 1;
    justify-content: center;
}

.oh-nav__link {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.12rem;
    color: #fff;
    text-decoration: none;
    font-weight: 600;
    padding: 0.35rem 0.6rem;
    border-radius: 10px;
    transition: color 0.2s ease, background 0.2s ease;
}

.oh-nav__zh {
    font-size: 0.92rem;
    line-height: 1.2;
    letter-spacing: 0.04em;
}

.oh-nav__en {
    font-size: 0.62rem;
    font-weight: 600;
    line-height: 1;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.72);
}

.oh-nav__link:hover {
    color: #fff;
    background: rgba(210, 177, 22, 0.22);
}

.oh-nav__link:hover .oh-nav__en {
    color: rgba(255, 255, 255, 0.92);
}

/* 当前页导航高亮（全站共用，勿仅写在公告/新闻子样式表中） */
.oh-nav__link.is-active {
    background: rgba(240, 214, 90, 0.2);
    color: #fff;
}

.oh-nav__link.is-active .oh-nav__en {
    color: rgba(255, 255, 255, 0.92);
}

/* 保证顶栏右侧操作区在 flex 布局中盖住中间导航可能延伸的透明命中区 */
.oh-header__actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
    position: relative;
    z-index: 10;
}

/* 顶栏：未登录（登录/注册）与已登录（用户名 + 状态 + 登出） */
.oh-header__guest,
.oh-header__user {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
}

/* HTML hidden 默认 display:none 会被上面的 flex 覆盖，必须显式隐藏 */
.oh-header__guest[hidden],
.oh-header__user[hidden] {
    display: none !important;
}

.oh-header__username {
    max-width: 9rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: #fff;
    font-weight: 700;
    font-size: 0.9rem;
    line-height: 1.2;
}

.oh-header__profile-btn {
    font: inherit;
    font-weight: 700;
    cursor: pointer;
}

/* 顶栏内按钮：与深色条协调 */
.oh-header__actions .oh-btn--ghost {
    background: transparent;
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.45);
}

.oh-header__actions .oh-btn--ghost:hover {
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
}

.oh-header__actions .oh-btn--primary {
    background: linear-gradient(135deg, #e8c82a, var(--oh-brand-gold));
    color: #2a3228;
    border: 1px solid rgba(255, 255, 255, 0.25);
}

.oh-header__actions .oh-btn--primary:hover {
    color: #1a2018;
    filter: brightness(1.05);
}

/* Buttons */
.oh-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    border-radius: 999px;
    padding: 0.5rem 1.1rem;
    font-weight: 700;
    font-size: 0.9rem;
    border: none;
    cursor: pointer;
    transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease, color 0.25s ease;
}

.oh-btn--primary {
    background: linear-gradient(135deg, #8ec9b8, #6aa898);
    color: #fff;
    box-shadow: 0 8px 24px rgba(106, 168, 152, 0.28);
}

.oh-btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(106, 168, 152, 0.35);
}

.oh-btn--ghost {
    background: transparent;
    color: var(--oh-ink);
    border: 1px solid var(--oh-line);
}

.oh-btn--ghost:hover {
    background: rgba(255, 255, 255, 0.65);
}

.oh-btn--soft {
    background: rgba(255, 255, 255, 0.85);
    color: var(--oh-ink);
    border: 1px solid var(--oh-line);
}

.oh-btn--soft:hover {
    transform: translateY(-2px);
    box-shadow: var(--oh-shadow);
}

.oh-btn--accent {
    background: linear-gradient(135deg, #f0b5a8, #e8a598);
    color: #fff;
    box-shadow: 0 8px 24px rgba(232, 165, 152, 0.3);
}

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

.oh-btn--lg {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
}

/* Hero — 高饱和柔光 + 幻彩旋转 + 扫光 / 漂浮点（更动、更花） */
.oh-hero {
    position: relative;
    overflow: hidden;
    padding: clamp(2.5rem, 6vw, 4.5rem) 0 clamp(2rem, 4vw, 3rem);
    border-radius: 0 0 clamp(18px, 3.5vw, 28px) clamp(18px, 3.5vw, 28px);
    margin: 0 clamp(0px, 2vw, 12px);
    box-shadow: 0 24px 56px rgba(55, 75, 120, 0.12);
}

.oh-hero__backdrop {
    position: absolute;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    border-radius: inherit;
}

/* 基底：更丰富的色块（青绿 / 天蓝 / 杏黄 / 丁香） */
.oh-hero__mesh {
    position: absolute;
    inset: -12%;
    border-radius: inherit;
    background:
        radial-gradient(ellipse 70% 50% at 12% 25%, rgba(120, 210, 255, 0.55) 0%, transparent 55%),
        radial-gradient(ellipse 65% 48% at 92% 20%, rgba(255, 190, 220, 0.45) 0%, transparent 52%),
        radial-gradient(ellipse 80% 55% at 75% 75%, rgba(255, 220, 140, 0.4) 0%, transparent 58%),
        radial-gradient(ellipse 90% 60% at 20% 85%, rgba(100, 230, 180, 0.38) 0%, transparent 55%),
        radial-gradient(ellipse 55% 45% at 50% 50%, rgba(200, 170, 255, 0.22) 0%, transparent 50%),
        linear-gradient(155deg, #e8f4fc 0%, #dceef5 28%, #e5f5ec 55%, #f2ebe8 82%, #e8e4f7 100%);
    animation: oh-hero-mesh-drift 10s ease-in-out infinite alternate;
}

@keyframes oh-hero-mesh-drift {
    0% { transform: translate3d(0, 0, 0) scale(1) rotate(0deg); }
    100% { transform: translate3d(-2.5%, 2%, 0) scale(1.04) rotate(0.8deg); }
}

/* 旋转幻彩层（锥形渐变 + 混合模式） */
.oh-hero__chromatic {
    position: absolute;
    left: 50%;
    top: 45%;
    width: 180%;
    height: 180%;
    margin-left: -90%;
    margin-top: -90%;
    border-radius: inherit;
    background: conic-gradient(
        from 220deg at 50% 50%,
        rgba(255, 140, 160, 0.35) 0deg,
        rgba(255, 210, 120, 0.32) 55deg,
        rgba(120, 235, 200, 0.34) 115deg,
        rgba(110, 190, 255, 0.38) 175deg,
        rgba(180, 150, 255, 0.32) 235deg,
        rgba(255, 160, 200, 0.3) 295deg,
        rgba(255, 140, 160, 0.35) 360deg
    );
    animation: oh-hero-chrome-spin 14s linear infinite;
    mix-blend-mode: soft-light;
    opacity: 0.78;
}

@keyframes oh-hero-chrome-spin {
    to { transform: rotate(360deg); }
}

/* 大块色光：更快、轨迹更大 */
.oh-hero__glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(48px);
    opacity: 0.62;
    animation: oh-hero-glow-float 9s ease-in-out infinite;
}

.oh-hero__glow--a {
    width: min(62vw, 540px);
    height: min(62vw, 540px);
    left: -15%;
    top: -22%;
    background: rgba(80, 200, 255, 0.55);
    animation-delay: 0s;
}

.oh-hero__glow--b {
    width: min(52vw, 460px);
    height: min(52vw, 460px);
    right: -12%;
    bottom: -18%;
    background: rgba(255, 130, 160, 0.45);
    animation-delay: -3s;
    animation-duration: 11s;
    opacity: 0.55;
}

.oh-hero__glow--c {
    width: min(44vw, 380px);
    height: min(44vw, 380px);
    left: 35%;
    bottom: -8%;
    background: rgba(140, 255, 190, 0.42);
    animation-delay: -5s;
    animation-duration: 8s;
    filter: blur(40px);
    opacity: 0.5;
}

.oh-hero__glow--d {
    width: min(36vw, 320px);
    height: min(36vw, 320px);
    right: 25%;
    top: -5%;
    background: rgba(255, 210, 100, 0.48);
    animation-delay: -2s;
    animation-duration: 7s;
    filter: blur(44px);
    opacity: 0.48;
}

@keyframes oh-hero-glow-float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(8%, -5%) scale(1.12); }
    50% { transform: translate(-4%, 10%) scale(0.94); }
    75% { transform: translate(6%, 6%) scale(1.08); }
}

/* 斜向扫光带 */
.oh-hero__sweep {
    position: absolute;
    inset: -40% -60%;
    background: linear-gradient(
        105deg,
        transparent 0%,
        transparent 38%,
        rgba(255, 255, 255, 0.45) 48%,
        rgba(255, 255, 255, 0.08) 52%,
        transparent 62%,
        transparent 100%
    );
    background-size: 200% 200%;
    animation: oh-hero-sweep 5.5s ease-in-out infinite;
    mix-blend-mode: soft-light;
    opacity: 0.85;
}

@keyframes oh-hero-sweep {
    0% { background-position: 120% 50%; }
    100% { background-position: -20% 50%; }
}

/* 小光斑漂浮 */
.oh-hero__bokeh {
    position: absolute;
    inset: 0;
    border-radius: inherit;
    overflow: hidden;
}

.oh-hero__dot {
    position: absolute;
    border-radius: 50%;
    filter: blur(2px);
    opacity: 0.65;
    animation: oh-hero-dot 6s ease-in-out infinite;
}

.oh-hero__dot--1 {
    width: 14px;
    height: 14px;
    left: 18%;
    top: 28%;
    background: #fff;
    box-shadow: 0 0 24px 6px rgba(255, 255, 255, 0.7);
    animation-duration: 5s;
    animation-delay: 0s;
}

.oh-hero__dot--2 {
    width: 10px;
    height: 10px;
    right: 22%;
    top: 35%;
    background: #b8fff0;
    box-shadow: 0 0 20px 5px rgba(120, 255, 230, 0.65);
    animation-duration: 7s;
    animation-delay: -2s;
}

.oh-hero__dot--3 {
    width: 12px;
    height: 12px;
    left: 42%;
    bottom: 26%;
    background: #ffd4e8;
    box-shadow: 0 0 22px 5px rgba(255, 180, 220, 0.6);
    animation-duration: 6.5s;
    animation-delay: -4s;
}

.oh-hero__dot--4 {
    width: 9px;
    height: 9px;
    right: 38%;
    bottom: 32%;
    background: #ffe566;
    box-shadow: 0 0 18px 4px rgba(255, 220, 100, 0.55);
    animation-duration: 5.5s;
    animation-delay: -1s;
}

@keyframes oh-hero-dot {
    0%, 100% { transform: translate(0, 0) scale(1); opacity: 0.5; }
    50% { transform: translate(12px, -18px) scale(1.15); opacity: 0.95; }
}

/* 天际线：渐变随时间变色 */
.oh-hero__horizon {
    position: absolute;
    left: -15%;
    right: -15%;
    bottom: 14%;
    height: 3px;
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(255, 140, 180, 0.45) 15%,
        rgba(120, 210, 255, 0.5) 40%,
        rgba(130, 255, 200, 0.45) 65%,
        rgba(255, 200, 120, 0.4) 85%,
        transparent 100%
    );
    background-size: 200% 100%;
    box-shadow:
        0 0 40px 6px rgba(130, 200, 255, 0.25),
        0 0 60px 10px rgba(255, 180, 200, 0.15);
    animation: oh-hero-horizon 5s ease-in-out infinite alternate, oh-hero-horizon-hue 8s linear infinite;
}

@keyframes oh-hero-horizon {
    0% { opacity: 0.65; transform: scaleX(0.96); }
    100% { opacity: 1; transform: scaleX(1.02); }
}

@keyframes oh-hero-horizon-hue {
    0% { background-position: 0% 50%; }
    100% { background-position: 100% 50%; }
}

/* 极轻噪点 */
.oh-hero__grain {
    position: absolute;
    inset: 0;
    border-radius: inherit;
    opacity: 0.035;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
    mix-blend-mode: overlay;
}

.oh-hero__content {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 1120px;
    margin: 0 auto;
    text-align: center;
    padding: clamp(0.75rem, 2vw, 1.25rem) clamp(1rem, 3vw, 1.75rem);
    border-radius: clamp(16px, 3vw, 24px);
    background: rgba(255, 255, 255, 0.22);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 8px 40px rgba(60, 100, 130, 0.08);
}

@media (prefers-reduced-motion: reduce) {
    .oh-hero__mesh,
    .oh-hero__chromatic,
    .oh-hero__glow,
    .oh-hero__sweep,
    .oh-hero__dot,
    .oh-hero__horizon {
        animation: none !important;
    }

    .oh-hero__chromatic {
        transform: none;
        opacity: 0.4;
    }

    .oh-hero__horizon {
        opacity: 0.8;
    }

    .oh-hero__sweep {
        opacity: 0.25;
    }
}

.oh-eyebrow {
    margin: 0 0 0.5rem;
    font-size: 0.95rem;
    letter-spacing: 0.08em;
    color: var(--oh-accent);
    text-transform: none;
    font-weight: 600;
}

/* Hero 内眉题：浅雾底上略加深（同色系，非换色） */
.oh-hero .oh-eyebrow {
    color: #4a7569;
    text-shadow:
        0 1px 0 rgba(255, 255, 255, 0.85),
        0 1px 3px rgba(45, 72, 65, 0.1);
}

.oh-hero__title {
    margin: 0;
    font-size: clamp(2rem, 5vw, 2.75rem);
    font-weight: 800;
    letter-spacing: 0.04em;
    color: var(--oh-ink);
    text-shadow: 0 1px 2px rgba(255, 255, 255, 0.75);
}

.oh-hero__sub {
    margin: 0.75rem 0 0;
    color: var(--oh-ink-soft);
    font-size: 1.05rem;
    text-shadow: 0 1px 1px rgba(255, 255, 255, 0.6);
}

.oh-hero__cta {
    margin-top: 1.75rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
}

/* Sections */
.oh-section {
    padding: clamp(2rem, 4vw, 3rem) 0;
}

.oh-section--tint {
    background: rgba(255, 255, 255, 0.35);
    border-top: 1px solid var(--oh-line);
    border-bottom: 1px solid var(--oh-line);
}

.oh-section__title {
    margin: 0 0 0.5rem;
    font-size: clamp(1.35rem, 3vw, 1.6rem);
    font-weight: 800;
    color: var(--oh-ink);
}

.oh-section__lead {
    margin: 0 0 1.25rem;
    color: var(--oh-ink-soft);
    max-width: 52ch;
    line-height: 1.6;
}

/* CTA row */
.oh-cta-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1.25rem;
}

.oh-cta-row__buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

/* Announcements */
.oh-announce {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
}

.oh-announce__item {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 0.5rem 1rem;
    padding: 0.85rem 1rem;
    border-radius: 12px;
    background: var(--oh-surface);
    border: 1px solid var(--oh-line);
    box-shadow: 0 6px 20px rgba(45, 74, 68, 0.05);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.oh-announce__item:hover {
    transform: translateY(-2px);
    box-shadow: var(--oh-shadow);
}

.oh-announce__title-row {
    flex: 1;
    min-width: 200px;
}

.oh-announce__title-row a {
    text-decoration: none;
    color: inherit;
    font-weight: 600;
}

.oh-announce__item.is-announce-focus {
    outline: 2px solid rgba(126, 184, 168, 0.65);
    outline-offset: 2px;
    background: rgba(255, 255, 255, 0.95);
}

.oh-announce__body {
    flex: 1 1 100%;
    width: 100%;
    margin-top: 0.65rem;
    padding-top: 0.65rem;
    border-top: 1px dashed var(--oh-line);
    font-size: 0.92rem;
    color: var(--oh-ink-soft);
    line-height: 1.6;
}

.oh-announce__text {
    white-space: pre-wrap;
}

.oh-announce__figure {
    margin-bottom: 0.65rem;
}

.oh-announce__figure img {
    display: block;
    max-width: 100%;
    max-height: 360px;
    object-fit: contain;
    border-radius: 10px;
    box-shadow: 0 6px 20px rgba(45, 74, 68, 0.08);
}

.oh-announce__date {
    font-size: 0.85rem;
    color: var(--oh-ink-soft);
    font-variant-numeric: tabular-nums;
}

/* Roadmap */
.oh-roadmap {
    list-style: none;
    margin: 0;
    padding: 0;
    border-left: 2px solid rgba(126, 184, 168, 0.35);
    margin-left: 0.5rem;
}

.oh-roadmap__item {
    position: relative;
    padding: 0 0 1.25rem 1.25rem;
}

.oh-roadmap__item::before {
    content: "";
    position: absolute;
    left: -0.55rem;
    top: 0.35rem;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #fff;
    border: 2px solid var(--oh-accent);
    box-shadow: 0 0 0 4px rgba(126, 184, 168, 0.15);
}

.oh-roadmap__badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.2rem 0.55rem;
    border-radius: 999px;
    margin-bottom: 0.35rem;
    background: rgba(126, 184, 168, 0.18);
    color: var(--oh-ink);
}

.oh-roadmap__badge--done {
    background: rgba(126, 184, 168, 0.28);
}

.oh-roadmap__badge--wip {
    background: rgba(232, 165, 152, 0.25);
}

.oh-roadmap__badge--plan {
    background: rgba(200, 200, 210, 0.35);
}

.oh-roadmap__title {
    margin: 0 0 0.25rem;
    font-size: 1.05rem;
    font-weight: 700;
}

.oh-roadmap__detail {
    margin: 0;
    color: var(--oh-ink-soft);
    line-height: 1.55;
    font-size: 0.95rem;
}

/* 独立路线图页：与时间轴左线留出边距 */
.oh-roadmap--page {
    margin-top: 0.5rem;
}

/* News */
.oh-news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

@media (max-width: 900px) {
    .oh-news-grid {
        grid-template-columns: 1fr;
    }
}

.oh-news-card {
    border-radius: var(--oh-radius);
    overflow: hidden;
    background: var(--oh-surface);
    border: 1px solid var(--oh-line);
    box-shadow: 0 8px 28px rgba(45, 74, 68, 0.06);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.oh-news-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--oh-shadow);
}

.oh-news-card a {
    text-decoration: none;
    color: inherit;
    display: block;
    height: 100%;
}

.oh-news-card__thumb {
    aspect-ratio: 16 / 9;
    background: linear-gradient(145deg, rgba(126, 184, 168, 0.2), rgba(232, 165, 152, 0.15));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--oh-ink-soft);
    font-weight: 600;
    font-size: 0.9rem;
}

.oh-news-card__thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.oh-news-card__body {
    padding: 1rem 1.1rem 1.15rem;
}

.oh-news-card__meta {
    font-size: 0.8rem;
    color: var(--oh-ink-soft);
    margin-bottom: 0.35rem;
}

.oh-news-card__title {
    margin: 0 0 0.4rem;
    font-size: 1.05rem;
    font-weight: 800;
    line-height: 1.35;
}

.oh-news-card__summary {
    margin: 0;
    font-size: 0.92rem;
    color: var(--oh-ink-soft);
    line-height: 1.55;
}

/* Footer — 封底：与顶栏同系的深色收束 */
.oh-footer {
    margin-top: auto;
    padding: 1.35rem 0 1.6rem;
    border-top: 1px solid rgba(210, 177, 22, 0.28);
    background: rgba(28, 36, 26, 0.94);
    color: rgba(255, 255, 255, 0.82);
}

.oh-footer .oh-wrap {
    padding-left: var(--oh-page-gutter);
    padding-right: var(--oh-page-gutter);
}

.oh-footer__inner {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    align-items: center;
    justify-content: space-between;
}

.oh-footer__note {
    margin: 0;
    color: rgba(255, 255, 255, 0.72);
    font-size: 0.88rem;
    letter-spacing: 0.02em;
}

.oh-footer__links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem 1.25rem;
}

.oh-footer__links a {
    color: rgba(255, 255, 255, 0.78);
    font-size: 0.88rem;
    font-weight: 600;
    text-decoration: none;
    transition: color 0.2s ease;
}

.oh-footer__links a:hover {
    color: #f0d65a;
    text-decoration: underline;
    text-underline-offset: 3px;
}

/* Reveal */
.oh-reveal {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.oh-reveal.is-visible {
    opacity: 1;
    transform: none;
}

/* Mobile nav */
@media (max-width: 860px) {
    .oh-nav-toggle {
        display: inline-flex;
    }

    .oh-header__inner {
        flex-wrap: wrap;
    }

    .oh-nav {
        display: none;
        width: 100%;
        order: 10;
        flex-direction: column;
        align-items: stretch;
        padding: 0.5rem 0 0;
        border-top: 1px solid rgba(255, 255, 255, 0.15);
        margin-top: 0.5rem;
        gap: 0.15rem;
    }

    .oh-nav__link {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.2rem;
        padding: 0.55rem 0.75rem;
    }

    .oh-nav__en {
        font-size: 0.65rem;
    }

    .oh-nav.is-open {
        display: flex;
    }

    .oh-header__actions {
        margin-left: 0;
    }
}

@media (max-width: 520px) {
    .oh-header__actions .oh-btn {
        padding: 0.45rem 0.75rem;
        font-size: 0.82rem;
    }

    .oh-header__username {
        max-width: 5.5rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    body::before,
    .oh-sheen,
    .oh-deco--fish,
    .oh-deco--fish2,
    .oh-deco--bubble,
    .oh-deco--bubble::before,
    .oh-deco--bubble::after {
        animation: none !important;
    }

    .oh-reveal {
        opacity: 1 !important;
        transform: none !important;
        transition: none !important;
    }
}