/* ==========================================================================
   Latte Design System v2.0  ——  Latte Glass
   全站现代化视觉基座：设计令牌 · 氛围背景 · 玻璃组件 · 流式响应式
   皮肤通过覆盖 --skin-* 令牌换肤，无需再逐元素写内联样式。
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. 设计令牌（默认皮肤「舒服细致」）
   -------------------------------------------------------------------------- */
:root {
    /* 字体 */
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", Roboto, sans-serif;
    --font-mono: "SF Mono", "JetBrains Mono", Consolas, monospace;

    /* 皮肤令牌：背景与氛围 */
    --skin-bg: linear-gradient(135deg, #5b6ee1 0%, #7c5cc4 26%, #d96bd3 52%, #ef5f86 74%, #46a6e8 100%);
    --skin-bg-size: 400% 400%;
    --skin-bg-animation: gradientShift 20s ease-in-out infinite;
    --skin-ambient: radial-gradient(60rem 40rem at 12% -10%, rgba(255, 255, 255, 0.22), transparent 60%),
                    radial-gradient(50rem 36rem at 105% 15%, rgba(255, 214, 236, 0.20), transparent 60%),
                    radial-gradient(56rem 44rem at 50% 118%, rgba(120, 200, 255, 0.20), transparent 62%);

    /* 皮肤令牌：文字 */
    --skin-font: var(--font-sans);
    --skin-text: rgba(255, 255, 255, 0.92);
    --skin-text-strong: #1e2433;
    --skin-text-muted: rgba(30, 36, 51, 0.62);

    /* 皮肤令牌：玻璃表面 */
    --skin-surface: rgba(255, 255, 255, 0.14);
    --skin-surface-strong: rgba(255, 255, 255, 0.55);
    --skin-surface-hover: rgba(255, 255, 255, 0.68);
    --skin-border: rgba(255, 255, 255, 0.34);
    --skin-border-strong: rgba(255, 255, 255, 0.55);
    --skin-radius-lg: 26px;
    --skin-radius-md: 18px;
    --skin-radius-sm: 12px;
    --skin-shadow: 0 24px 70px -18px rgba(31, 38, 72, 0.45), 0 2px 6px rgba(31, 38, 72, 0.12);
    --skin-shadow-soft: 0 10px 34px -12px rgba(31, 38, 72, 0.35);
    --skin-blur: 26px;

    /* 皮肤令牌：强调色 */
    --skin-accent: #34c78e;
    --skin-accent-strong: #1fa976;
    --skin-accent-contrast: #ffffff;
    --skin-accent-soft: rgba(52, 199, 142, 0.16);

    /* 皮肤令牌：标题 / 头像 */
    --skin-title-color: #ffffff;
    --skin-title-glow: 0 6px 26px rgba(31, 38, 72, 0.35);
    --skin-avatar-ring: rgba(255, 255, 255, 0.75);
    --skin-avatar-shadow: 0 18px 44px -12px rgba(31, 38, 72, 0.5);

    /* 皮肤令牌：按钮 */
    --skin-btn-bg: rgba(255, 255, 255, 0.92);
    --skin-btn-text: #232a3d;
    --skin-btn-border: rgba(255, 255, 255, 0.65);
    --skin-btn-shadow: 0 8px 22px -10px rgba(31, 38, 72, 0.45);
    --skin-btn-hover-bg: #ffffff;
    --skin-btn-hover-text: #141a2b;
    --skin-btn-hover-border: rgba(255, 255, 255, 0.9);
    --skin-btn-hover-shadow: 0 16px 34px -12px rgba(31, 38, 72, 0.5), 0 0 0 4px var(--skin-accent-soft);
    --skin-btn-radius: 16px;

    /* 皮肤令牌：输入框 / 分隔线 */
    --skin-input-bg: rgba(255, 255, 255, 0.82);
    --skin-input-text: #232a3d;
    --skin-input-border: rgba(255, 255, 255, 0.7);
    --skin-divider: linear-gradient(90deg, transparent, var(--skin-accent) 55%, transparent);

    /* 布局尺度 */
    --rail-width: 308px;
    --content-width: 880px;
    --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
    --ease-spring: cubic-bezier(0.34, 1.4, 0.5, 1);
}

/* --------------------------------------------------------------------------
   2. 基础重置与排版
   -------------------------------------------------------------------------- */
* { box-sizing: border-box; }

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

body {
    font-family: var(--skin-font, var(--font-sans));
    color: var(--skin-text);
    background: var(--skin-bg);
    background-size: var(--skin-bg-size);
    animation: var(--skin-bg-animation);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

/* 氛围光层：所有页面共享的固定背景 */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    background: var(--skin-ambient);
    transition: background 0.6s ease;
}

::selection { background: var(--skin-accent); color: var(--skin-accent-contrast); }

:focus-visible {
    outline: 3px solid color-mix(in srgb, var(--skin-accent) 55%, transparent);
    outline-offset: 2px;
    border-radius: 6px;
}

img { max-width: 100%; }

/* 细滚动条 */
*::-webkit-scrollbar { width: 8px; height: 8px; }
*::-webkit-scrollbar-thumb {
    background: color-mix(in srgb, var(--skin-accent) 38%, rgba(255,255,255,0.25));
    border-radius: 99px;
}
*::-webkit-scrollbar-track { background: transparent; }

/* --------------------------------------------------------------------------
   3. 首页三栏流式布局（任意窗口尺寸均可用，不再按竖屏/机型隐藏内容）
   -------------------------------------------------------------------------- */
body.home {
    margin: 0;
    min-height: 100vh;
    display: grid;
    gap: 22px;
    padding: 22px 18px 56px;
    overflow-x: hidden;
}

.left-sidebar   { grid-area: rail-left; }
.main-container { grid-area: main; }
.right-rail     { grid-area: rail-right; }

/* 超宽桌面：三栏并存 */
@media (min-width: 1340px) {
    body.home {
        grid-template-columns: var(--rail-width) minmax(0, var(--content-width)) var(--rail-width);
        grid-template-areas: "rail-left main rail-right";
        justify-content: center;
        align-items: start;
        gap: 26px;
        padding-top: 28px;
    }
    body.home .left-sidebar,
    body.home .right-rail {
        position: static;
        /* 给左下角固定徽标留出避让空间 */
        padding-bottom: 48px;
    }
}

/* 中等窗口：主内容优先，左右栏依次下移；广告变为横向滑动卡片条 */
@media (max-width: 1339px) {
    body.home {
        grid-template-columns: minmax(0, 820px);
        grid-template-areas:
            "main"
            "rail-left"
            "rail-right";
        justify-content: center;
        justify-items: center;
    }
    body.home .main-container { width: 100%; }
    body.home .left-sidebar {
        width: 100%;
        display: grid;
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 14px;
        align-items: start;
    }
    body.home .right-rail {
        width: 100%;
        flex-direction: row;
        gap: 12px;
        overflow-x: auto;
        overflow-y: hidden;
        padding: 4px 4px 12px;
        scroll-snap-type: x mandatory;
        -webkit-overflow-scrolling: touch;
        position: relative;
        top: auto;
        max-height: none;
        align-self: stretch;
        scrollbar-width: none;
    }
    body.home .right-rail::-webkit-scrollbar { display: none; }
    body.home .right-rail > * {
        flex: 0 0 286px;
        scroll-snap-align: start;
    }
    body.home .right-rail .ad-row-container { flex: 0 0 300px; }
}

/* 平板 / 大手机：左栏组件纵向堆叠 */
@media (max-width: 820px) {
    body.home { padding: 14px 12px 48px; gap: 16px; }
    body.home .left-sidebar { grid-template-columns: minmax(0, 1fr); gap: 12px; }
}

/* 小手机：广告卡片更窄，留出横向浏览空间 */
@media (max-width: 420px) {
    body.home .right-rail > * { flex-basis: 248px; }
    body.home .right-rail .ad-row-container { flex-basis: 262px; }
}

/* --------------------------------------------------------------------------
   4. 主容器 / 头像 / 标题
   -------------------------------------------------------------------------- */
.main-container {
    background: var(--skin-surface);
    backdrop-filter: blur(var(--skin-blur)) saturate(150%);
    -webkit-backdrop-filter: blur(var(--skin-blur)) saturate(150%);
    border: 1px solid var(--skin-border);
    border-radius: var(--skin-radius-lg);
    box-shadow: var(--skin-shadow);
    padding: clamp(1.6rem, 4vw, 3rem) clamp(1.2rem, 4vw, 2.6rem);
    margin: 0 auto;
    width: 100%;
    max-width: var(--content-width);
    position: relative;
    z-index: 1;
    transition: box-shadow 0.4s var(--ease-out), border-color 0.4s ease, background 0.4s ease;
}

.main-container::after {
    /* 顶部高光线，强化玻璃质感 */
    content: "";
    position: absolute;
    inset: 0 0 auto 0;
    height: 1px;
    border-radius: var(--skin-radius-lg) var(--skin-radius-lg) 0 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.7), transparent);
    pointer-events: none;
}

.avatar {
    width: 188px;
    max-width: 52vw;
    height: auto;
    border-radius: 50%;
    border: 3px solid var(--skin-avatar-ring);
    box-shadow: var(--skin-avatar-shadow), 0 0 0 8px rgba(255, 255, 255, 0.10);
    transition: transform 0.45s var(--ease-spring), box-shadow 0.45s var(--ease-out);
    cursor: pointer;
}
.avatar:hover {
    transform: translateY(-4px) scale(1.04);
    box-shadow: 0 26px 60px -14px rgba(31, 38, 72, 0.55), 0 0 0 10px color-mix(in srgb, var(--skin-accent) 22%, transparent);
}

.title {
    font-size: clamp(2rem, 6vw, 3.4rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--skin-title-color);
    text-shadow: var(--skin-title-glow);
    margin: 1.1em 0 0.7em;
    cursor: pointer;
    line-height: 1.15;
}

.divider {
    width: min(220px, 70%);
    height: 3px;
    border: 0;
    border-radius: 99px;
    background: var(--skin-divider);
    margin: 26px auto;
    box-shadow: 0 0 18px -2px var(--skin-accent);
}

/* --------------------------------------------------------------------------
   5. 搜索区
   -------------------------------------------------------------------------- */
.search-container { margin: 18px 0 8px; }

.search-wrapper { width: 100%; max-width: 560px; }

.search-input {
    width: 100%;
    padding: 15px 58px 15px 22px;
    font-size: 16px;
    color: var(--skin-input-text);
    background: var(--skin-input-bg);
    border: 1px solid var(--skin-input-border);
    border-radius: 999px;
    box-shadow: 0 8px 24px -14px rgba(31, 38, 72, 0.5);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    transition: border-color 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
}
.search-input::placeholder { color: color-mix(in srgb, var(--skin-input-text) 52%, transparent); }
.search-input:focus {
    outline: none;
    background: #fff;
    border-color: color-mix(in srgb, var(--skin-accent) 70%, #fff);
    box-shadow: 0 0 0 4px var(--skin-accent-soft), 0 12px 30px -14px rgba(31, 38, 72, 0.55);
}

.search-button {
    position: absolute;
    top: 5px;
    right: 5px;
    width: 44px;
    height: 44px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 0;
    border-radius: 50%;
    font-size: 17px;
    line-height: 1;
    color: var(--skin-accent-contrast);
    background: linear-gradient(135deg, var(--skin-accent), var(--skin-accent-strong));
    cursor: pointer;
    box-shadow: 0 8px 18px -8px var(--skin-accent-strong);
    transition: transform 0.25s var(--ease-spring), filter 0.25s ease;
}
.search-button svg { display: block; width: 18px; height: 18px; }
.search-button:hover { transform: scale(1.08); filter: brightness(1.06); }
.search-button:active { transform: scale(0.95); }

.search-suggestions {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    min-width: 0;
    max-width: none;
    width: auto;
    z-index: 60;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border: 1px solid rgba(255, 255, 255, 0.7);
    border-radius: 18px;
    box-shadow: 0 24px 60px -18px rgba(31, 38, 72, 0.5);
    overflow: hidden;
    text-align: left;
}
.search-suggestion-item {
    padding: 11px 18px;
    color: #2a3146;
    cursor: pointer;
    font-size: 15px;
    transition: background 0.18s ease;
}
.search-suggestion-item:hover { background: var(--skin-accent-soft); }

/* --------------------------------------------------------------------------
   6. 按钮体系
   -------------------------------------------------------------------------- */
.buttons-container {
    display: block;
    width: 100%;
    margin-top: 10px;
}

.main-buttons {
    width: 100%;
    max-width: none;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
}
.main-buttons .btn { flex: 0 0 auto; }

.btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 50px;
    padding: 13px 20px;
    font-size: 15px;
    font-weight: 650;
    line-height: 1.25;
    text-decoration: none;
    white-space: nowrap;
    color: var(--skin-btn-text);
    background: var(--skin-btn-bg);
    border: 1px solid var(--skin-btn-border);
    border-radius: var(--skin-btn-radius);
    box-shadow: var(--skin-btn-shadow);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    cursor: pointer;
    transition: transform 0.28s var(--ease-out), box-shadow 0.28s var(--ease-out),
                background 0.28s ease, color 0.28s ease, border-color 0.28s ease;
}
.btn:hover {
    color: var(--skin-btn-hover-text);
    background: var(--skin-btn-hover-bg);
    border-color: var(--skin-btn-hover-border);
    box-shadow: var(--skin-btn-hover-shadow);
    transform: translateY(-3px);
}
.btn:active { transform: translateY(-1px) scale(0.99); }

.more-options-section { margin-top: 18px; width: 100%; }

.more-btn {
    width: 100%;
    min-height: 52px;
    padding: 14px 22px;
    font-size: 16px;
    font-weight: 700;
    color: var(--skin-btn-text);
    background: color-mix(in srgb, var(--skin-btn-bg) 82%, transparent);
    border: 1px dashed var(--skin-border-strong);
    border-radius: var(--skin-btn-radius);
    cursor: pointer;
    transition: transform 0.28s var(--ease-out), border-color 0.28s ease, background 0.28s ease;
}
.more-btn:hover {
    transform: translateY(-2px);
    border-color: var(--skin-accent);
    border-style: solid;
    background: var(--skin-btn-hover-bg);
}

.advanced-buttons {
    width: 100%;
    max-width: none;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transform: translateY(-6px);
    transition: max-height 0.5s var(--ease-out), opacity 0.4s ease, transform 0.4s ease, margin 0.4s ease;
    margin-top: 0;
}
.advanced-buttons.show {
    max-height: 600px;
    opacity: 1;
    transform: translateY(0);
    margin-top: 14px;
}
.advanced-btn { min-height: 44px; font-size: 14px; }

/* --------------------------------------------------------------------------
   7. 左栏玻璃组件（诗词 / 公告 / 友链）
   -------------------------------------------------------------------------- */
.left-sidebar {
    position: relative;
    top: auto;
    left: auto;
    display: flex;
    flex-direction: column;
    gap: 14px;
    width: 100%;
    max-width: none;
    z-index: 2;
}

.poetry-container,
.news-container,
.friend-links-container {
    background: var(--skin-surface-strong);
    backdrop-filter: blur(22px) saturate(150%);
    -webkit-backdrop-filter: blur(22px) saturate(150%);
    border: 1px solid var(--skin-border);
    border-radius: var(--skin-radius-md);
    box-shadow: var(--skin-shadow-soft);
    padding: 16px 18px;
    transition: transform 0.35s var(--ease-out), box-shadow 0.35s var(--ease-out), background 0.35s ease;
}
.poetry-container:hover,
.news-container:hover,
.friend-links-container:hover {
    transform: translateY(-3px);
    background: var(--skin-surface-hover);
    box-shadow: 0 20px 44px -16px rgba(31, 38, 72, 0.45);
}

.poetry-sentence {
    font-size: 17px;
    font-weight: 700;
    line-height: 1.5;
    color: var(--skin-text-strong);
    text-align: center;
    margin-bottom: 8px;
}
.poetry-info {
    font-size: 12px;
    text-align: center;
    color: var(--skin-text-muted);
}

.news-title, #newsTitle {
    font-size: 15px !important;
    font-weight: 800 !important;
    color: var(--skin-text-strong) !important;
    background: none !important;
    border: 0 !important;
    padding: 0 !important;
    margin: 0 0 8px !important;
    text-shadow: none !important;
    box-shadow: none !important;
    display: block !important;
    line-height: 1.3 !important;
}
.news-scroll { padding-right: 4px; }
.news-item {
    padding: 8px 2px;
    font-size: 12.5px;
    line-height: 1.45;
    color: color-mix(in srgb, var(--skin-text-strong) 82%, #000);
    border-bottom: 1px dashed rgba(30, 36, 51, 0.12);
    cursor: pointer;
    transition: color 0.2s ease;
}
.news-item:last-child { border-bottom: 0; }
.news-item:hover { color: var(--skin-accent-strong); }
.news-item .date {
    display: block;
    font-size: 10.5px;
    color: var(--skin-text-muted);
    margin-bottom: 2px;
}

.friend-links-title {
    font-size: 15px;
    font-weight: 800;
    color: var(--skin-text-strong);
    margin: 0 0 10px;
    text-align: center;
}
.friend-links { display: flex; flex-direction: column; gap: 8px; }
.friend-link-item {
    display: block;
    padding: 9px 14px;
    font-size: 13.5px;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    color: var(--skin-text-strong);
    background: rgba(255, 255, 255, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.55);
    border-radius: 12px;
    transition: transform 0.25s var(--ease-out), background 0.25s ease, color 0.25s ease, box-shadow 0.25s ease;
}
.friend-link-item:hover {
    transform: translateX(3px);
    color: var(--skin-accent-strong);
    background: rgba(255, 255, 255, 0.82);
    box-shadow: 0 8px 20px -12px rgba(31, 38, 72, 0.5);
}

/* --------------------------------------------------------------------------
   8. 右栏广告卡片（窄窗口下不再被主区域遮挡）
   -------------------------------------------------------------------------- */
.right-rail {
    display: flex;
    flex-direction: column;
    gap: 12px;
    width: 100%;
    z-index: 2;
}

/* 广告与播放器在被装配进右栏前先隐藏，避免解析期闪烁/错位 */
body.home .ad-window,
body.home .ad-row-container,
body.home .music-player { visibility: hidden; }
body.shell-ready .ad-window,
body.shell-ready .ad-row-container,
body.shell-ready .music-player { visibility: visible; }

.ad-window,
.ad-row-container {
    position: relative !important;
    top: auto !important;
    right: auto !important;
    bottom: auto !important;
    left: auto !important;
    width: 100% !important;
    max-width: none !important;
    flex: 0 0 auto;
    background: var(--skin-surface-strong);
    backdrop-filter: blur(22px) saturate(150%);
    -webkit-backdrop-filter: blur(22px) saturate(150%);
    border: 1px solid var(--skin-border);
    border-radius: var(--skin-radius-md);
    box-shadow: var(--skin-shadow-soft);
    overflow: hidden;
    transition: transform 0.32s var(--ease-out), box-shadow 0.32s var(--ease-out), background 0.32s ease;
}
.ad-window:hover {
    transform: translateY(-3px);
    background: var(--skin-surface-hover);
    box-shadow: 0 20px 44px -16px rgba(31, 38, 72, 0.45);
}
.ad-row-container {
    display: flex;
    gap: 10px;
    background: transparent !important;
    border: 0 !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    box-shadow: none !important;
    border-radius: 0 !important;
}
.ad-row-container .ad-half {
    position: relative;
    flex: 1 1 0;
    min-width: 0;
}
.ad-content {
    display: flex;
    align-items: center;
    gap: 13px;
    padding: 14px 16px;
    height: 100%;
}
.ad-logo {
    width: 54px;
    height: 54px;
    flex: 0 0 54px;
    border-radius: 15px;
    object-fit: cover;
    border: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: 0 6px 16px -8px rgba(31, 38, 72, 0.4);
}
.mcd-logo {
    width: 54px;
    height: 54px;
    flex: 0 0 54px;
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    background: rgba(255, 193, 7, 0.22);
    border: 1px solid rgba(255, 193, 7, 0.45);
}
.ad-text {
    font-size: 14.5px;
    font-weight: 700;
    line-height: 1.45;
    color: var(--skin-text-strong);
    min-width: 0;
}
.badge-open-source, .badge-science {
    font-size: 11px;
    font-weight: 700;
    padding: 3px 8px;
    border-radius: 99px;
    color: #fff;
    backdrop-filter: blur(8px);
}
.badge-open-source { background: linear-gradient(135deg, #34c78e, #1fa976); }
.badge-science { background: linear-gradient(135deg, #ff7a45, #e0552b); }

/* --------------------------------------------------------------------------
   9. 音乐播放器（进入右栏，跟随栅格）
   -------------------------------------------------------------------------- */
.music-player {
    position: relative !important;
    top: auto !important;
    right: auto !important;
    bottom: auto !important;
    left: auto !important;
    width: 100% !important;
    max-width: none !important;
    background: var(--skin-surface-strong);
    backdrop-filter: blur(22px) saturate(150%);
    -webkit-backdrop-filter: blur(22px) saturate(150%);
    border: 1px solid var(--skin-border);
    border-radius: var(--skin-radius-md) !important;
    box-shadow: var(--skin-shadow-soft);
    margin: 0;
    flex: 0 0 auto;
}
.music-player:hover { transform: none; background: var(--skin-surface-strong); }
.player-toggle { color: var(--skin-text-strong); }
.player-toggle:hover { color: var(--skin-accent-strong); }
.player-title, .current-song { color: var(--skin-text-strong); }
.control-btn {
    background: rgba(255, 255, 255, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.6);
}
.control-btn:hover { background: #fff; transform: translateY(-2px); }
.song-list li {
    color: var(--skin-text-strong);
    border-radius: 10px;
    transition: background 0.2s ease;
}
.song-list li:hover { background: var(--skin-accent-soft); }

/* --------------------------------------------------------------------------
   10. 弹窗（皮肤 / 密码 / 表单）
   -------------------------------------------------------------------------- */
.skin-modal,
.password-modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: rgba(20, 24, 40, 0.45);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}
.skin-modal.show,
.password-modal.show {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}
.skin-modal-content,
.password-modal-content {
    width: 100%;
    max-width: 520px;
    max-height: min(86vh, 720px);
    overflow-y: auto;
    padding: clamp(1.4rem, 4vw, 2.2rem);
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(30px) saturate(160%);
    -webkit-backdrop-filter: blur(30px) saturate(160%);
    border: 1px solid rgba(255, 255, 255, 0.8);
    border-radius: 24px;
    box-shadow: 0 40px 90px -30px rgba(15, 20, 40, 0.65);
    color: #262d42;
    transform: translateY(18px) scale(0.97);
    transition: transform 0.4s var(--ease-out);
}
.skin-modal.show .skin-modal-content,
.password-modal.show .password-modal-content { transform: translateY(0) scale(1); }
.skin-modal h2, .password-modal h3 {
    margin: 0 0 14px;
    color: #1b2236;
    font-size: 1.35rem;
}
.skin-info {
    background: rgba(120, 130, 160, 0.08);
    border-radius: 14px;
    padding: 12px 16px;
    margin-bottom: 14px;
    font-size: 14px;
}
.skin-info h3 { font-size: 15px; margin-bottom: 6px; }
.skin-info p { margin: 3px 0; color: #55607a; }
.skin-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 10px;
    margin-bottom: 14px;
}
.skin-btn,
.footer-btn,
.password-btn {
    padding: 12px 18px;
    font-size: 14.5px;
    font-weight: 650;
    border-radius: 13px;
    border: 1px solid rgba(30, 36, 51, 0.12);
    background: #fff;
    color: #2b3350;
    cursor: pointer;
    text-decoration: none;
    text-align: center;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    transition: transform 0.22s var(--ease-out), box-shadow 0.22s ease, background 0.22s ease, border-color 0.22s ease;
}
.skin-btn:hover,
.footer-btn:hover,
.password-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 26px -14px rgba(31, 38, 72, 0.55);
    border-color: var(--skin-accent);
}
.skin-btn.danger, .footer-btn.cancel {
    color: #d43d5a;
    border-color: rgba(212, 61, 90, 0.3);
}
.skin-btn.secondary {
    background: rgba(30, 36, 51, 0.05);
}
.skin-modal-footer,
.password-buttons {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 16px;
    flex-wrap: wrap;
}
.footer-btn.apply,
.password-btn.confirm {
    background: linear-gradient(135deg, var(--skin-accent), var(--skin-accent-strong));
    color: var(--skin-accent-contrast);
    border-color: transparent;
}
.password-input,
.form-input {
    width: 100%;
    padding: 13px 16px;
    font-size: 15px;
    color: #232a3d;
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid rgba(30, 36, 51, 0.16);
    border-radius: 13px;
    transition: border-color 0.25s ease, box-shadow 0.25s ease;
}
.password-input:focus,
.form-input:focus {
    outline: none;
    border-color: var(--skin-accent);
    box-shadow: 0 0 0 4px var(--skin-accent-soft);
}
.password-buttons { justify-content: stretch; }
.password-buttons .password-btn { flex: 1; }
.error-message { color: #d43d5a; font-size: 13px; min-height: 18px; }
.security-warning {
    border-radius: 14px;
    padding: 12px 16px;
    background: rgba(255, 176, 32, 0.12);
    border: 1px solid rgba(255, 176, 32, 0.35);
    color: #7a5a12;
    font-size: 13px;
}
.security-warning h4 { margin: 0 0 6px; font-size: 14px; }
.security-warning p { margin: 3px 0; }
.file-input { display: none; }
.file-input-label {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 18px;
    font-size: 14.5px;
    font-weight: 650;
    border-radius: 13px;
    border: 1px solid rgba(30, 36, 51, 0.12);
    background: #fff;
    color: #2b3350;
    cursor: pointer;
    text-align: center;
    transition: transform 0.22s var(--ease-out), border-color 0.22s ease;
}
.file-input-label:hover { transform: translateY(-2px); border-color: var(--skin-accent); }
.form-group { margin-bottom: 14px; }
.form-group label { display: block; font-weight: 650; font-size: 14px; margin-bottom: 6px; color: #333c58; }

/* 当前外部皮肤提示条 */
.current-skin-info {
    position: fixed;
    left: 16px;
    bottom: 16px;
    z-index: 900;
    max-width: min(300px, calc(100vw - 32px));
    padding: 10px 14px;
    font-size: 12.5px;
    line-height: 1.5;
    color: #5a4310;
    background: rgba(255, 244, 214, 0.92);
    border: 1px solid rgba(255, 176, 32, 0.5);
    border-radius: 13px;
    box-shadow: 0 12px 30px -14px rgba(31, 38, 72, 0.5);
    backdrop-filter: blur(14px);
}
.current-skin-info .warning { color: #c2570a; font-weight: 700; }

/* --------------------------------------------------------------------------
   11. 顶部登录按钮 / 页脚信息
   -------------------------------------------------------------------------- */
.auth-buttons {
    position: fixed;
    top: 16px;
    left: 16px;
    z-index: 800;
    display: flex;
    gap: 8px;
}
.auth-btn {
    padding: 9px 16px;
    font-size: 13.5px;
    font-weight: 700;
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.35);
    border-radius: 999px;
    text-decoration: none;
    backdrop-filter: blur(12px);
    background: rgba(255, 255, 255, 0.16);
    transition: transform 0.25s var(--ease-out), background 0.25s ease;
}
.auth-btn:hover { transform: translateY(-2px); background: rgba(255, 255, 255, 0.28); }
.auth-btn.login { background: color-mix(in srgb, var(--skin-accent) 80%, transparent); border-color: transparent; }
.auth-btn.register { background: rgba(124, 92, 196, 0.75); border-color: transparent; }

.site-footer-chip {
    position: fixed;
    left: 14px;
    bottom: 14px;
    z-index: 800;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.85);
    background: rgba(20, 26, 44, 0.32);
    border: 1px solid rgba(255, 255, 255, 0.18);
    backdrop-filter: blur(12px);
    padding: 7px 12px;
    border-radius: 11px;
    pointer-events: none;
}
.site-footer-chip #uidDisplay { font-weight: 700; color: #b9ffd9; margin-top: 2px; }

/* --------------------------------------------------------------------------
   12. 通用共享组件（皮肤中心 / 抽奖页复用）
   -------------------------------------------------------------------------- */
.latte-card {
    background: rgba(255, 255, 255, 0.13);
    border: 1px solid rgba(255, 255, 255, 0.28);
    border-radius: var(--skin-radius-lg);
    backdrop-filter: blur(var(--skin-blur)) saturate(150%);
    -webkit-backdrop-filter: blur(var(--skin-blur)) saturate(150%);
    box-shadow: var(--skin-shadow);
}
.latte-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 13px 22px;
    font-size: 15px;
    font-weight: 700;
    color: var(--skin-accent-contrast);
    background: linear-gradient(135deg, var(--skin-accent), var(--skin-accent-strong));
    border: 0;
    border-radius: 999px;
    cursor: pointer;
    text-decoration: none;
    box-shadow: 0 14px 30px -12px var(--skin-accent-strong);
    transition: transform 0.25s var(--ease-out), filter 0.25s ease, box-shadow 0.25s ease;
}
.latte-btn:hover { transform: translateY(-2px); filter: brightness(1.07); }
.latte-btn:active { transform: translateY(0) scale(0.98); }
.latte-btn:disabled { opacity: 0.55; cursor: not-allowed; transform: none; filter: none; }
.latte-btn.ghost {
    color: #fff;
    background: rgba(255, 255, 255, 0.14);
    border: 1px solid rgba(255, 255, 255, 0.35);
    box-shadow: none;
}
.latte-btn.ghost:hover { background: rgba(255, 255, 255, 0.24); }

/* --------------------------------------------------------------------------
   12.5 小屏手机：按钮两列、文字可换行、固定徽标转为文档流
   -------------------------------------------------------------------------- */
@media (max-width: 560px) {
    .main-buttons { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
    .advanced-buttons { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .btn {
        padding: 12px 12px;
        font-size: 13.5px;
        min-height: 52px;
        white-space: normal;
        line-height: 1.3;
    }
    .site-footer-chip {
        position: static;
        width: fit-content;
        margin: 18px auto 0;
        pointer-events: auto;
        grid-column: 1 / -1;
    }
    .current-skin-info {
        position: static;
        max-width: none;
        width: 100%;
        margin-top: 14px;
        grid-column: 1 / -1;
    }
    .auth-buttons { top: 10px; right: 10px; left: auto; }
}

@media (max-width: 380px) {
    .main-buttons, .advanced-buttons { grid-template-columns: minmax(0, 1fr); }
}

/* --------------------------------------------------------------------------
   13. 无障碍与降级
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
    body, * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important;
               transition-duration: 0.08ms !important; scroll-behavior: auto !important; }
}

@supports not (backdrop-filter: blur(2px)) {
    .main-container, .poetry-container, .news-container, .friend-links-container,
    .ad-window, .music-player, .latte-card {
        background: rgba(255, 255, 255, 0.86);
    }
}