.guestbook-container {
    max-width:900px;
    margin:0 auto;
    padding:2rem 2rem 4rem;
    position:relative;
    z-index:20;
}
.guestbook-header {
    text-align:center;
    margin-bottom:2rem;
}
.form-card {
    background:rgba(255,250,252,0.88);
    backdrop-filter:blur(3px);
    border-radius:2rem;
    padding:1.8rem 2rem;
    margin-bottom:2rem;
    box-shadow:0 12px 28px -8px rgba(233,130,156,0.2);
    border:1px solid #ffe2ec;
}
.form-title {
    font-size:1.5rem;
    font-weight:600;
    font-family:'Noto Serif SC',serif;
    color:#4f2f39;
    margin-bottom:0.5rem;
    display:flex;
    align-items:center;
    gap:10px;
}
.form-title i {
    color:#e982a2;
    font-size:1.6rem;
}
.form-desc {
    font-size:0.85rem;
    color:#b27b88;
    margin-bottom:1.5rem;
    border-left:3px solid #f6a5c0;
    padding-left:0.8rem;
}
.input-group {
    margin-bottom:1.2rem;
}
.input-group label {
    display:block;
    font-size:0.85rem;
    font-weight:500;
    color:#ac5d76;
    margin-bottom:0.4rem;
}
.input-group label i {
    margin-right:5px;
    color:#e189a4;
}
.input-group input,.input-group textarea {
    width:100%;
    padding:0.8rem 1rem;
    border:2px solid #ffe0e8;
    border-radius:1.5rem;
    font-family:'Inter',sans-serif;
    font-size:0.9rem;
    background:#fffefb;
    transition:all var(--d-2);
    resize:vertical;
}
.input-group input:focus,.input-group textarea:focus {
    outline:none;
    border-color:#f6a5c0;
    box-shadow:0 0 0 3px #ffd9e4;
}
.submit-btn:hover {
    background:#ffdfe8;
    color:#9c405e;
    translate:0 -2px;
    box-shadow:0 5px 12px rgba(231,118,142,0.2);
}
.messages-section {
    margin-top:1rem;
}
.section-header {
    display:flex;
    align-items:baseline;
    justify-content:space-between;
    flex-wrap:wrap;
    margin-bottom:1.2rem;
    gap:12px;
}
.section-header h3 {
    font-size:1.4rem;
    font-weight:600;
    font-family:'Noto Serif SC',serif;
    color:#4f2f39;
}
.message-count {
    background:#ffe4ec;
    padding:0.2rem 0.8rem;
    border-radius:30px;
    font-size:0.75rem;
    color:#c76f8b;
}
.message-card {
    background:rgba(255,248,250,0.85);
    backdrop-filter:blur(2px);
    border-radius:1.5rem;
    padding:1.3rem 1.5rem;
    margin-bottom:1.2rem;
    border:1px solid #ffe2ec;
    transition:all var(--d-2);
}
.message-card:hover {
    background:#ffe4ec;
    translate:0 -2px;
    box-shadow:0 6px 16px rgba(233,130,156,0.18);
}
/* ============================================================
   留言卡片内部结构（重建块）
   ------------------------------------------------------------
   注意：这一整块是从仓库里**丢失后重建**的。
   本文件原先这里是句字面的 "... (line truncated to 2000 chars)"，
   从初始提交 88a2cc6 起就是这样 —— 原始内容是在别处被截断后才提交的，
   git 历史追不回来。这里按「markup + JS 实际引用到的类名」反推补齐：
     · js/Guestbook.js 的 renderMessages 模板（message-header / message-name /
       message-date / message-content / message-footer / reply-name /
       delete-btn / copy-msg-btn / empty-message）
     · css/app.css 的 #gbView 覆盖块（msg-name / msg-time / msg-content 等价类）
     · css/mobile.css 的触控与安全区规则（emoji-item / mood 那批）
   只补缺失，不重写本文件已有的规则（.message-card / .section-header /
   .message-count / .sort-btn / .message-avatar 全部原样保留）。 */

/* ---- 卡片内部排版 ---- */
.message-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: 0.75rem;
}
.message-name {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    min-width: 0;
    font-weight: 600;
    color: #a14563;
}
.message-date {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.7rem;
    color: #bb8ea0;
    white-space: nowrap;
}
.message-date i {
    color: #e0a0b4;
}
.message-content {
    font-size: 0.85rem;
    color: #7a4a58;
    line-height: 1.75;
    word-break: break-word;
    overflow-wrap: anywhere;
}
.message-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
    margin-top: 0.6rem;
}
.message-footer:empty {
    display: none;
}

/* ---- 昵称 / 删除 / 复制 ---- */
.reply-name {
    cursor: pointer;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.reply-name:hover {
    color: #e06a8f;
    text-decoration: underline;
}
.delete-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 0.25rem 0.7rem;
    border: 1px solid #ffc2d4;
    border-radius: 30px;
    background: #fff0f3;
    color: #c2557a;
    font-size: 0.72rem;
    cursor: pointer;
    transition: all var(--d-2);
}
.delete-btn:hover {
    background: #ffe0e8;
    color: #9c405e;
    border-color: #f6a5c0;
}
.copy-msg-btn {
    border: none;
    background: transparent;
    color: #c9a3b1;
    font-size: 0.72rem;
    padding: 0 2px;
    cursor: pointer;
    transition: color var(--d-2);
}
.copy-msg-btn:hover {
    color: #e06a8f;
}

/* ---- 空态 / 加载态 ---- */
.empty-message {
    text-align: center;
    padding: 2.5rem 1rem;
    color: #bb8ea0;
    font-size: 0.85rem;
}
.empty-message i {
    color: #e6b3c4;
    opacity: 0.6;
}
.empty-message p {
    margin-top: 8px;
}

/* ---- 字数统计与表情行 ---- */
.char-count {
    margin-top: 0.4rem;
    font-size: 0.72rem;
    color: #b5768c;
    text-align: right;
}
.emoji-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    margin-top: 0.5rem;
}
.emoji-item {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 34px;
    min-height: 34px;
    border-radius: 10px;
    background: #fff4f7;
    border: 1px solid #ffe2ec;
    font-size: 1.05rem;
    line-height: 1;
    cursor: pointer;
    user-select: none;
    transition: all var(--d-2) var(--e-out);
}
.emoji-item:hover {
    background: #ffe4ec;
    border-color: #f6a5c0;
    translate: 0 -1px;
}

/* ---- 访客定位 / 今日寄语 ---- */
.visitor-location {
    margin: 0.6rem 0 0.9rem;
    font-size: 0.72rem;
    color: #b5768c;
}
.visitor-location i {
    color: #e0a0b4;
}
.guest-quote {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    margin-bottom: 1.5rem;
    padding: 0.5rem 1rem;
    border-radius: 40px;
    background: #fff4f7;
    border: 1px dashed #ffcdda;
    font-size: 0.78rem;
    color: #a14563;
}
.guest-quote i {
    color: #e0a0b4;
}

/* ---- 人机验证容器 ---- */
.turnstile-wrap {
    display: flex;
    justify-content: center;
}

/* ---- 小屏：日期换行、表情按钮收一点 ---- */
@media (max-width: 480px) {
    .message-header {
        align-items: flex-start;
    }
    .emoji-item {
        min-width: 32px;
        min-height: 32px;
    }
}

/* ===== giscus 论坛容器 · 樱花粉卡片 ===== */
.forum-section {
    margin:1.5rem 0 0.5rem;
}
.forum-header {
    display:flex;
    align-items:center;
    gap:0.5rem;
    color:#b34e6b;
    font-weight:600;
    margin-bottom:0.6rem;
}
.forum-header i {
    color:#e6728f;
}
.forum-badge {
    background:#fff0f3;
    color:#c2557a;
    border:1px solid #ffd2df;
    border-radius:40px;
    padding:0.15rem 0.65rem;
    font-size:0.75rem;
    font-weight:500;
}
.giscus-wrapper {
    background:rgba(255,252,250,0.92);
    border:1px solid #ffd2df;
    border-radius:16px;
    padding:1rem 1.25rem 0.6rem;
    box-shadow:0 6px 24px rgba(230,114,143,0.12);
    backdrop-filter:blur(6px);
    -webkit-backdrop-filter:blur(6px);
}
#giscusPending {
    color:#b88a98;
    font-size:0.85rem;
    text-align:center;
    padding:1rem 0;
}
.message-avatar {
    width:44px !important;
    height:44px !important;
    border-radius:50% !important;
    object-fit:cover !important;
    flex-shrink:0;
    display:inline-block;
    vertical-align:middle;
    transition:transform var(--d-2) var(--e-out),box-shadow var(--d-2) var(--e-out);
}
.message-avatar:hover {
    border-radius:50% !important;
    translate:0 -3px;
    box-shadow:0 6px 12px rgba(233,131,160,0.35);
}
.sort-bar {
    margin-left:auto;
    order:3;
}
.sort-btn {
    background:linear-gradient(135deg,#fff0f4,#ffe6ee);
    color:#c2557a;
    border:1px solid #ffd2df;
    border-radius:30px;
    padding:.35rem .95rem;
    font-size:.85rem;
    font-weight:500;
    cursor:pointer;
    transition:all var(--d-2) var(--e-out);
    box-shadow:0 2px 6px rgba(230,114,143,.12);
}
.sort-btn:hover {
    background:#ffdbe6;
    color:#a84562;
    translate:0 -1px;
    box-shadow:0 4px 10px rgba(230,114,143,.25);
}
.sort-btn.active {
    background:#f78fb0;
    color:#fff;
    border-color:#f78fb0;
    box-shadow:0 3px 8px rgba(247,143,176,.4);
}