/* 情侣空间 · 纪念日：粉色系（#FFF3F3 / #F6E8E7 / #FFF6ED），印章 #FB6571 */
/* 挂载在 #app 内，与 couple-space 一致，不铺满整窗浏览器 */

.cs-anniv-overlay {
    position: absolute;
    inset: 0;
    z-index: 100200;
    display: flex;
    align-items: stretch;
    justify-content: center;
    background: #fff3f3;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.22s ease;
    box-sizing: border-box;
    min-height: 0;
}

html[data-appearance="dark"] .cs-anniv-overlay {
    background: linear-gradient(180deg, #151518 0%, #1f2024 100%);
}

html[data-appearance="dark"] .cs-anniv-header,
html[data-appearance="dark"] .cs-anniv-cal-card,
html[data-appearance="dark"] .cs-anniv-card,
html[data-appearance="dark"] .cs-anniv-empty,
html[data-appearance="dark"] .cs-anniv-form,
html[data-appearance="dark"] .cs-anniv-modal-card {
    background: rgba(44, 44, 46, 0.94);
    color: #f5f5f7;
    border-color: rgba(255, 255, 255, 0.08);
}

html[data-appearance="dark"] .cs-anniv-title,
html[data-appearance="dark"] .cs-anniv-cal-month,
html[data-appearance="dark"] .cs-anniv-cell-num,
html[data-appearance="dark"] .cs-anniv-countdown-heading,
html[data-appearance="dark"] .cs-anniv-card-title,
html[data-appearance="dark"] .cs-anniv-form-title {
    color: #f5f5f7;
}

html[data-appearance="dark"] .cs-anniv-weekdays,
html[data-appearance="dark"] .cs-anniv-card-sub,
html[data-appearance="dark"] .cs-anniv-countdown-copy,
html[data-appearance="dark"] .cs-anniv-form-hint {
    color: rgba(235, 235, 245, 0.66);
}

html[data-appearance="dark"] .cs-anniv-cell {
    background: rgba(58, 58, 60, 0.86);
}

html[data-appearance="dark"] .cs-anniv-back,
html[data-appearance="dark"] .cs-anniv-add,
html[data-appearance="dark"] .cs-anniv-cal-arrow {
    background: rgba(58, 58, 60, 0.92);
    color: #f5f5f7;
}

/* 极端情况无 #app 时回退整窗 */
.cs-anniv-overlay--root {
    position: fixed;
    z-index: 12020;
}

.cs-anniv-overlay.is-open {
    opacity: 1;
    pointer-events: auto;
}

.cs-anniv-shell {
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
    height: 100%;
    max-height: 100%;
    box-sizing: border-box;
}

.cs-anniv-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    background: #fff6ed;
    border-bottom: 1px solid rgba(240, 234, 234, 0.95);
    flex-shrink: 0;
}

.cs-anniv-back,
.cs-anniv-add {
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 12px;
    background: #f6e8e7;
    color: #6a4c56;
    font-size: 22px;
    line-height: 1;
    cursor: pointer;
}

.cs-anniv-back:active,
.cs-anniv-add:active {
    opacity: 0.85;
}

.cs-anniv-title {
    margin: 0;
    font-size: 17px;
    font-weight: 600;
    color: #6a4c56;
}

.cs-anniv-body {
    flex: 1;
    overflow: auto;
    padding: 12px 12px 20px;
    -webkit-overflow-scrolling: touch;
    -ms-overflow-style: none;
    scrollbar-width: none;
}

.cs-anniv-body::-webkit-scrollbar,
.cs-anniv-sheet-panel::-webkit-scrollbar,
.cs-anniv-letter-body::-webkit-scrollbar,
.cs-anniv-collection-body::-webkit-scrollbar {
    display: none;
    width: 0;
    height: 0;
}

.cs-anniv-cal-card {
    background: #f6e8e7;
    border-radius: 16px;
    padding: 12px 10px 14px;
    box-shadow: 0 8px 24px rgba(106, 76, 86, 0.06);
}

.cs-anniv-cal-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
}

.cs-anniv-cal-arrow {
    border: none;
    background: #fff6ed;
    color: #6a4c56;
    width: 36px;
    height: 36px;
    border-radius: 10px;
    font-size: 20px;
    cursor: pointer;
}

.cs-anniv-cal-month {
    font-size: 16px;
    font-weight: 600;
    color: #6a4c56;
}

.cs-anniv-weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 4px;
    margin-bottom: 6px;
    text-align: center;
    font-size: 11px;
    color: #9a7c85;
}

.cs-anniv-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 6px;
}

.cs-anniv-cell {
    position: relative;
    min-height: 44px;
    border-radius: 10px;
    background: #fff3f3;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding: 4px 2px 6px;
    cursor: pointer;
    box-sizing: border-box;
}

.cs-anniv-cell.is-selected {
    outline: 2px solid #fb6571;
    box-shadow: 0 0 0 3px rgba(251, 101, 113, 0.16);
}

.cs-anniv-cell--empty {
    background: transparent;
    cursor: default;
    min-height: 12px;
}

.cs-anniv-cell-num {
    font-size: 13px;
    font-weight: 600;
    color: #6a4c56;
}

.cs-anniv-stamp {
    display: block;
    margin-top: 2px;
    line-height: 0;
}

.cs-anniv-stamp img {
    display: block;
    width: 22px;
    height: 22px;
    object-fit: contain;
    filter: drop-shadow(0 0 5px rgba(251, 101, 113, 0.55)) drop-shadow(0 2px 4px rgba(251, 101, 113, 0.35));
}

.cs-anniv-countdown-block {
    margin-top: 16px;
    border: 1px solid rgba(231, 197, 202, 0.78);
    border-radius: 15px;
    background: rgba(255, 246, 237, 0.76);
    overflow: hidden;
    box-shadow: 0 5px 16px rgba(106, 76, 86, 0.035);
}

.cs-anniv-countdown-toggle {
    display: flex;
    align-items: center;
    width: 100%;
    min-height: 52px;
    box-sizing: border-box;
    padding: 10px 12px;
    border: 0;
    background: transparent;
    color: #9a7c85;
    cursor: pointer;
    text-align: left;
    -webkit-tap-highlight-color: rgba(251, 101, 113, 0.1);
}

.cs-anniv-countdown-toggle-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    margin-right: 9px;
    border-radius: 50%;
    color: #fb6571;
    background: rgba(251, 101, 113, 0.1);
    font-size: 17px;
    flex-shrink: 0;
}

.cs-anniv-countdown-heading {
    margin: 0;
    font-size: 15px;
    font-weight: 650;
    color: #6a4c56;
    flex: 1;
}

.cs-anniv-countdown-count {
    min-width: 20px;
    height: 20px;
    padding: 0 6px;
    box-sizing: border-box;
    border-radius: 10px;
    background: rgba(251, 101, 113, 0.11);
    color: #b98790;
    font-size: 11px;
    line-height: 20px;
    text-align: center;
}

.cs-anniv-countdown-count:empty {
    display: none;
}

.cs-anniv-countdown-chevron {
    margin-left: 9px;
    color: #b98790;
    font-size: 19px;
    line-height: 1;
    transform: rotate(0deg);
    transition: transform 0.2s ease;
}

.cs-anniv-countdown-block.is-expanded .cs-anniv-countdown-chevron {
    transform: rotate(180deg);
}

.cs-anniv-countdown-panel[hidden] {
    display: none !important;
}

.cs-anniv-countdown-panel {
    padding: 0 9px 8px;
    border-top: 1px dashed rgba(231, 197, 202, 0.72);
}

.cs-anniv-countdown-list {
    list-style: none;
    margin: 9px 0 0;
    padding: 0;
}

.cs-anniv-countdown-row {
    display: flex;
    align-items: flex-start;
    padding: 10px 12px;
    border-radius: 12px;
    background: #fff6ed;
    margin-bottom: 8px;
    border: 1px solid rgba(240, 234, 234, 0.9);
    cursor: pointer;
    transition: transform 0.12s ease, border-color 0.12s ease;
}

.cs-anniv-countdown-row:last-child {
    margin-bottom: 0;
}

.cs-anniv-countdown-row:active {
    transform: scale(0.99);
    border-color: rgba(251, 101, 113, 0.45);
}

.cs-anniv-countdown-main {
    flex: 1;
}

.cs-anniv-countdown-title {
    font-size: 15px;
    font-weight: 600;
    color: #6a4c56;
}

.cs-anniv-countdown-sub {
    margin-top: 4px;
    font-size: 12px;
    color: #9a7c85;
}

.cs-anniv-countdown-empty {
    padding: 12px;
    font-size: 13px;
    color: #9a7c85;
    text-align: center;
}

/* 恋念信收藏入口 */
.cs-anniv-letter-entry {
    display: flex;
    align-items: center;
    width: 100%;
    min-height: 64px;
    margin-top: 11px;
    padding: 10px 12px;
    box-sizing: border-box;
    border: 1px solid rgba(231, 197, 202, 0.78);
    border-radius: 15px;
    background:
        radial-gradient(circle at 88% 20%, rgba(255, 255, 255, 0.88) 0 3px, transparent 4px),
        linear-gradient(145deg, #fff7f4 0%, #ffedf1 100%);
    color: #6a4c56;
    cursor: pointer;
    box-shadow: 0 6px 18px rgba(106, 76, 86, 0.05);
    text-align: left;
    -webkit-tap-highlight-color: rgba(251, 101, 113, 0.1);
}

.cs-anniv-letter-entry:active {
    transform: scale(0.992);
}

.cs-anniv-letter-entry-seal {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    margin-right: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.72);
    box-shadow: inset 0 0 0 1px rgba(251, 101, 113, 0.14);
    font-size: 18px;
    flex-shrink: 0;
}

.cs-anniv-letter-entry-copy {
    display: flex;
    flex: 1;
    min-width: 0;
    flex-direction: column;
}

.cs-anniv-letter-entry-copy strong {
    font-size: 15px;
    line-height: 1.4;
}

.cs-anniv-letter-entry-copy small {
    margin-top: 2px;
    color: #a98a93;
    font-size: 11px;
    line-height: 1.35;
}

.cs-anniv-letter-entry-count {
    min-width: 24px;
    height: 24px;
    padding: 0 7px;
    box-sizing: border-box;
    border-radius: 12px;
    background: rgba(251, 101, 113, 0.11);
    color: #c37683;
    font-size: 12px;
    line-height: 24px;
    text-align: center;
}

.cs-anniv-letter-entry-arrow {
    margin-left: 8px;
    color: #b98790;
    font-size: 22px;
}

/* 底部抽屉（相对于 #app，不用 vh 以免超出小手机可视区） */
.cs-anniv-sheet {
    position: absolute;
    inset: 0;
    z-index: 100210;
    background: rgba(58, 42, 48, 0.35);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    box-sizing: border-box;
    padding: 8px 8px max(10px, var(--safe-area-inset-bottom, env(safe-area-inset-bottom, 10px)));
    min-height: 0;
}

.cs-anniv-sheet.is-open {
    opacity: 1;
    pointer-events: auto;
}

.cs-anniv-sheet-panel {
    width: 100%;
    max-width: 100%;
    background: #fff3f3;
    border-radius: 18px 18px 0 0;
    padding: 14px 16px max(16px, var(--safe-area-inset-bottom, env(safe-area-inset-bottom, 0px)));
    /* 父级为纪念日全屏层（=小手机高度），用百分比避免底部被裁切 */
    max-height: calc(100% - 16px);
    overflow: auto;
    -webkit-overflow-scrolling: touch;
    -ms-overflow-style: none;
    scrollbar-width: none;
    box-sizing: border-box;
}

.cs-anniv-sheet-panel--edit {
    max-height: min(calc(100% - 16px), 85vh);
}

.cs-anniv-sheet-close {
    display: block;
    margin-left: auto;
    margin-bottom: 8px;
    border: none;
    background: #f6e8e7;
    color: #6a4c56;
    padding: 6px 12px;
    border-radius: 10px;
    cursor: pointer;
    font-size: 13px;
}

.cs-anniv-sheet-kicker {
    font-size: 13px;
    color: #9a7c85;
    margin-bottom: 10px;
}

.cs-anniv-sheet-empty {
    margin: 0;
    font-size: 14px;
    color: #9a7c85;
}

.cs-anniv-sheet-row {
    padding: 8px 0;
    border-bottom: 1px solid #f0eaea;
    font-size: 15px;
    color: #6a4c56;
}

.cs-anniv-sheet-row:last-child {
    border-bottom: none;
}

.cs-anniv-edit-title {
    font-size: 16px;
    font-weight: 600;
    color: #6a4c56;
    margin-bottom: 12px;
}

.cs-anniv-field {
    display: block;
    margin-bottom: 10px;
    font-size: 12px;
    color: #9a7c85;
}

.cs-anniv-select,
.cs-anniv-input {
    display: block;
    width: 100%;
    margin-top: 6px;
    padding: 10px 12px;
    border-radius: 10px;
    border: 1px solid #f0eaea;
    background: #fff6ed;
    font-size: 15px;
    color: #6a4c56;
    box-sizing: border-box;
}

.cs-anniv-edit-actions {
    display: flex;
    gap: 10px;
    margin-top: 14px;
    justify-content: flex-end;
}

.cs-anniv-btn {
    border: none;
    border-radius: 12px;
    padding: 10px 18px;
    font-size: 15px;
    cursor: pointer;
}

.cs-anniv-btn--ghost {
    background: #f6e8e7;
    color: #6a4c56;
}

.cs-anniv-btn--primary {
    background: #fb6571;
    color: #fff;
}

.cs-anniv-btn--primary:active {
    opacity: 0.92;
}

/* 全局提醒弹窗（挂载 #app 内） */
.cs-anniv-alert-root {
    position: absolute;
    inset: 0;
    z-index: 100220;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: max(16px, var(--safe-area-inset-top, env(safe-area-inset-top, 0px))) 16px max(16px, var(--safe-area-inset-bottom, env(safe-area-inset-bottom, 0px)));
    background: rgba(58, 42, 48, 0.4);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
    box-sizing: border-box;
}

.cs-anniv-alert-root--root {
    position: fixed;
    z-index: 13000;
}

.cs-anniv-alert-root.is-open {
    opacity: 1;
    pointer-events: auto;
}

.cs-anniv-alert-root .cs-anniv-modal {
    width: 100%;
    max-width: 320px;
}

.cs-anniv-modal-panel {
    background: #fff3f3;
    border-radius: 16px;
    padding: 18px 16px 16px;
    border: 1px solid #f0eaea;
    box-shadow: 0 12px 40px rgba(106, 76, 86, 0.12);
}

.cs-anniv-modal-title {
    font-size: 16px;
    font-weight: 600;
    color: #6a4c56;
    margin-bottom: 8px;
}

.cs-anniv-modal-text {
    margin: 0 0 14px;
    font-size: 14px;
    line-height: 1.5;
    color: #9a7c85;
}

.cs-anniv-modal-ok {
    width: 100%;
}

/* ============ v1.1 自动纪念日 & 恋念信 ============ */

/* 日历：恋念信标记 & 自动纪念日圆点 */
.cs-anniv-letter-mark {
    display: block;
    margin-top: 2px;
    font-size: 14px;
    line-height: 1;
    filter: drop-shadow(0 1px 3px rgba(251, 101, 113, 0.4));
}

.cs-anniv-auto-dot {
    display: block;
    margin-top: 5px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #fb6571;
    opacity: 0.75;
}

/* 「重要日子」自动纪念日行 */
.cs-anniv-countdown-row--auto {
    background: #fff3f3;
    border-color: rgba(251, 101, 113, 0.22);
}

html[data-appearance="dark"] .cs-anniv-countdown-row--auto {
    background: rgba(58, 58, 60, 0.86);
    border-color: rgba(251, 101, 113, 0.3);
}

/* 日期抽屉：恋念信行 */
.cs-anniv-sheet-row--letter {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.cs-anniv-sheet-row--letter:active {
    opacity: 0.8;
}

.cs-anniv-sheet-letter-ic {
    font-size: 18px;
    line-height: 1;
    flex-shrink: 0;
}

.cs-anniv-sheet-letter-main {
    flex: 1;
    min-width: 0;
}

.cs-anniv-sheet-letter-title {
    display: block;
    font-size: 13px;
    color: #9a7c85;
    margin-top: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.cs-anniv-sheet-letter-open {
    flex-shrink: 0;
    font-size: 13px;
    color: #fb6571;
}

/* 聊天窗口：恋念信卡片 */
.chat-message-bubble--anniv-letter {
    background: transparent !important;
    padding: 0 !important;
    border: 0 !important;
    box-shadow: none !important;
    max-width: 272px;
    overflow: visible !important;
}

.cs-anniv-letter-card {
    position: relative;
    display: block;
    width: 246px;
    max-width: 100%;
    min-height: 166px;
    box-sizing: border-box;
    margin: 0;
    padding: 14px 16px 12px;
    border: 1px solid rgba(202, 143, 151, 0.5);
    border-radius: 17px;
    background:
        radial-gradient(circle at 13% 25%, rgba(255, 255, 255, 0.62) 0 1px, transparent 1.8px),
        radial-gradient(circle at 84% 77%, rgba(176, 121, 130, 0.1) 0 1px, transparent 1.7px),
        linear-gradient(145deg, rgba(255, 255, 255, 0.62), transparent 42%),
        linear-gradient(180deg, #fff7ef 0%, #f9e1dc 58%, #f2cdd0 100%);
    background-size: 23px 23px, 27px 27px, auto, auto;
    box-shadow:
        0 10px 22px rgba(133, 91, 99, 0.14),
        inset 0 0 0 3px rgba(255, 250, 245, 0.76),
        inset 0 0 0 4px rgba(211, 160, 168, 0.2);
    color: inherit;
    font-family: inherit;
    text-align: left;
    cursor: pointer;
    overflow: hidden;
    -webkit-tap-highlight-color: rgba(251, 101, 113, 0.12);
    transition: transform 0.16s ease, box-shadow 0.16s ease;
}

.cs-anniv-letter-card::before,
.cs-anniv-letter-card::after {
    content: "";
    position: absolute;
    z-index: 1;
    bottom: -27px;
    width: 72%;
    height: 105px;
    background: rgba(255, 239, 233, 0.5);
    border-top: 1px solid rgba(202, 143, 151, 0.2);
    pointer-events: none;
}

.cs-anniv-letter-card::before {
    left: -25%;
    transform: rotate(31deg);
}

.cs-anniv-letter-card::after {
    right: -25%;
    transform: rotate(-31deg);
}

.cs-anniv-letter-card:active {
    transform: scale(0.975);
    box-shadow:
        0 5px 12px rgba(133, 91, 99, 0.12),
        inset 0 0 0 3px rgba(255, 250, 245, 0.76);
}

.cs-anniv-letter-card-flap {
    position: absolute;
    z-index: 2;
    top: -1px;
    left: -1px;
    right: -1px;
    height: 91px;
    background:
        linear-gradient(155deg, rgba(255, 255, 255, 0.75), transparent 48%),
        linear-gradient(180deg, #fff9f2, #f7dcd8);
    border-bottom: 1px solid rgba(202, 143, 151, 0.32);
    clip-path: polygon(0 0, 100% 0, 50% 91%);
    -webkit-clip-path: polygon(0 0, 100% 0, 50% 91%);
    filter: drop-shadow(0 3px 3px rgba(119, 70, 84, 0.07));
    pointer-events: none;
}

.cs-anniv-letter-card-lace {
    position: absolute;
    z-index: 4;
    inset: 5px;
    border: 1px dashed rgba(194, 137, 146, 0.42);
    border-radius: 13px;
    background:
        radial-gradient(circle at 7px 0, transparent 5px, rgba(255, 253, 247, 0.98) 5.5px 7px, transparent 7.5px)
            0 0 / 14px 14px repeat-x,
        radial-gradient(circle at 7px 14px, transparent 5px, rgba(255, 253, 247, 0.98) 5.5px 7px, transparent 7.5px)
            0 100% / 14px 14px repeat-x;
    pointer-events: none;
}

.cs-anniv-letter-card-sprinkles {
    position: absolute;
    z-index: 5;
    inset: 0;
    color: rgba(184, 122, 135, 0.62);
    font-family: Georgia, "Times New Roman", serif;
    pointer-events: none;
}

.cs-anniv-letter-card-sprinkles i {
    position: absolute;
    font-style: normal;
    line-height: 1;
    text-shadow: 0 1px rgba(255, 255, 255, 0.76);
}

.cs-anniv-letter-card-sprinkles i:nth-child(1) { left: 14px; top: 81px; font-size: 12px; }
.cs-anniv-letter-card-sprinkles i:nth-child(2) { right: 17px; top: 35px; font-size: 10px; }
.cs-anniv-letter-card-sprinkles i:nth-child(3) { right: 24px; top: 96px; font-size: 11px; }
.cs-anniv-letter-card-sprinkles i:nth-child(4) { left: 31px; top: 102px; font-size: 15px; }

.cs-anniv-letter-card-seal {
    position: absolute;
    z-index: 7;
    top: 55px;
    right: 17px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 39px;
    height: 39px;
    border: 1px solid rgba(168, 92, 108, 0.38);
    border-radius: 50%;
    background:
        radial-gradient(circle at 35% 28%, rgba(255, 238, 234, 0.72), transparent 25%),
        linear-gradient(145deg, #dca1aa, #b96f80);
    box-shadow:
        0 4px 9px rgba(119, 70, 84, 0.18),
        inset 0 0 0 3px rgba(255, 225, 222, 0.18),
        inset 0 0 0 4px rgba(126, 66, 79, 0.12);
    overflow: hidden;
    pointer-events: none;
}

.cs-anniv-letter-card-seal img {
    display: block;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    opacity: 0.66;
    filter: sepia(1) saturate(0.55) hue-rotate(300deg) brightness(1.38) contrast(0.76);
    mix-blend-mode: screen;
    transform: scale(0.82);
}

.cs-anniv-letter-card-top {
    position: relative;
    z-index: 6;
    display: flex;
    align-items: center;
    gap: 6px;
    min-height: 22px;
    margin-bottom: 39px;
}

.cs-anniv-letter-card-icon {
    color: #bd7f8d;
    font-family: Georgia, serif;
    font-size: 15px;
    line-height: 1;
}

.cs-anniv-letter-card-brand {
    font-size: 12px;
    font-weight: 700;
    color: #9b6973;
    letter-spacing: 1.2px;
}

.cs-anniv-letter-card-label {
    margin-left: auto;
    max-width: 105px;
    padding: 2px 7px;
    border: 1px solid rgba(202, 143, 151, 0.19);
    border-radius: 9px;
    background: rgba(255, 250, 246, 0.7);
    color: #9b6f78;
    font-size: 11px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.cs-anniv-letter-card-title {
    position: relative;
    z-index: 6;
    padding-right: 45px;
    color: #674a53;
    font-family: "Songti SC", "STSong", Georgia, serif;
    font-size: 16.5px;
    font-weight: 700;
    line-height: 1.38;
    word-break: break-word;
}

.cs-anniv-letter-card-date {
    position: relative;
    z-index: 6;
    margin-top: 4px;
    color: #a77780;
    font-family: Georgia, "Times New Roman", serif;
    font-size: 11px;
}

.cs-anniv-letter-card-hint {
    position: relative;
    z-index: 6;
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px dashed rgba(183, 125, 137, 0.35);
    color: #a36d79;
    font-size: 12px;
}

html[data-appearance="dark"] .cs-anniv-letter-card {
    background:
        radial-gradient(circle at 13% 25%, rgba(255, 255, 255, 0.08) 0 1px, transparent 1.8px),
        linear-gradient(160deg, #382c2f 0%, #432d33 100%);
    border-color: rgba(218, 154, 167, 0.32);
    box-shadow:
        0 10px 22px rgba(0, 0, 0, 0.24),
        inset 0 0 0 3px rgba(255, 255, 255, 0.035);
}

html[data-appearance="dark"] .cs-anniv-letter-card-flap {
    background: linear-gradient(180deg, #47373a, #3b2c31);
    border-bottom-color: rgba(218, 154, 167, 0.25);
}

html[data-appearance="dark"] .cs-anniv-letter-card-lace {
    border-color: rgba(228, 178, 188, 0.28);
    opacity: 0.58;
}

html[data-appearance="dark"] .cs-anniv-letter-card-title {
    color: #f1dfe2;
}

html[data-appearance="dark"] .cs-anniv-letter-card-label {
    background: rgba(255, 255, 255, 0.07);
    border-color: rgba(255, 255, 255, 0.06);
    color: #d9b3bb;
}

html[data-appearance="dark"] .cs-anniv-letter-card-brand,
html[data-appearance="dark"] .cs-anniv-letter-card-date,
html[data-appearance="dark"] .cs-anniv-letter-card-hint {
    color: #d2a7b0;
}

/* 恋念信收藏页：梦幻甜美、轻复古蕾丝信封拼贴 */
.cs-anniv-letter-collection {
    position: absolute;
    inset: 0;
    z-index: 100205;
    display: flex;
    flex-direction: column;
    min-width: 0;
    min-height: 0;
    background:
        radial-gradient(circle at 12% 8%, rgba(255, 255, 255, 0.9) 0 2px, transparent 3px),
        radial-gradient(circle at 86% 19%, rgba(251, 101, 113, 0.12) 0 3px, transparent 4px),
        radial-gradient(circle at 24% 76%, rgba(255, 255, 255, 0.78) 0 4px, transparent 5px),
        linear-gradient(180deg, #fff7f5 0%, #fdebef 54%, #f9e5eb 100%);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateX(16px);
    transition: opacity 0.2s ease, transform 0.24s ease, visibility 0s linear 0.24s;
    box-sizing: border-box;
}

.cs-anniv-letter-collection.is-open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateX(0);
    transition-delay: 0s;
}

.cs-anniv-collection-header {
    display: flex;
    align-items: center;
    min-height: 68px;
    padding: max(8px, var(--safe-area-inset-top, env(safe-area-inset-top, 0px))) 12px 8px;
    box-sizing: border-box;
    flex-shrink: 0;
    border-bottom: 1px solid rgba(231, 197, 202, 0.58);
    background: rgba(255, 248, 244, 0.88);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
}

.cs-anniv-collection-back,
.cs-anniv-collection-header-spacer {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
}

.cs-anniv-collection-back {
    border: 0;
    border-radius: 12px;
    background: #f6e8e7;
    color: #6a4c56;
    font-size: 23px;
    line-height: 1;
    cursor: pointer;
}

.cs-anniv-collection-heading {
    flex: 1;
    min-width: 0;
    text-align: center;
}

.cs-anniv-collection-heading h2 {
    margin: 0;
    color: #6a4c56;
    font-size: 17px;
    line-height: 1.35;
}

.cs-anniv-collection-heading p {
    margin: 2px 0 0;
    color: #a98a93;
    font-size: 10px;
    line-height: 1.3;
}

.cs-anniv-collection-body {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    -ms-overflow-style: none;
    scrollbar-width: none;
    padding-bottom: max(24px, var(--safe-area-inset-bottom, env(safe-area-inset-bottom, 0px)));
}

.cs-anniv-collection-intro {
    margin: 15px 18px 3px;
    color: #a77d89;
    font-family: Georgia, "Times New Roman", "Songti SC", serif;
    font-size: 12px;
    line-height: 1.5;
    text-align: center;
    letter-spacing: 0.3px;
}

.cs-anniv-collection-intro span {
    color: #d58b9a;
    font-size: 15px;
}

.cs-anniv-envelope-collage {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
    gap: 24px 6px;
    padding: 22px 9px 58px;
    box-sizing: border-box;
}

.cs-anniv-envelope {
    --envelope-bg: #f4cfd0;
    --envelope-light: #fff4ed;
    --envelope-deep: #d99da7;
    --envelope-ink: #9b6973;
    position: relative;
    display: block;
    width: calc(100% - 12px);
    max-width: 190px;
    height: 132px;
    margin: 0 auto;
    padding: 0;
    border: 1px solid rgba(202, 143, 151, 0.48);
    border-radius: 16px;
    background:
        radial-gradient(circle at 16% 20%, rgba(255, 255, 255, 0.55) 0 1px, transparent 1.8px),
        radial-gradient(circle at 80% 74%, rgba(176, 121, 130, 0.1) 0 1px, transparent 1.7px),
        linear-gradient(145deg, rgba(255, 255, 255, 0.58), transparent 42%),
        linear-gradient(180deg, var(--envelope-light) 0%, #f9dfd9 58%, var(--envelope-bg) 100%);
    background-size: 23px 23px, 27px 27px, auto, auto;
    box-shadow:
        0 10px 22px rgba(133, 91, 99, 0.13),
        inset 0 0 0 3px rgba(255, 250, 245, 0.72),
        inset 0 0 0 4px rgba(211, 160, 168, 0.2);
    transform:
        translateX(var(--envelope-shift, 0))
        translateY(var(--envelope-rise, 0))
        rotate(var(--envelope-tilt, 0deg));
    transform-origin: center center;
    cursor: pointer;
    overflow: hidden;
    -webkit-tap-highlight-color: rgba(251, 101, 113, 0.12);
    transition: transform 0.16s ease, box-shadow 0.16s ease;
}

.cs-anniv-envelope:nth-child(even) {
    margin-top: 15px;
}

.cs-anniv-envelope:active {
    transform:
        translateX(var(--envelope-shift, 0))
        translateY(var(--envelope-rise, 0))
        rotate(var(--envelope-tilt, 0deg))
        scale(0.97);
    box-shadow: 0 5px 12px rgba(119, 70, 84, 0.12);
}

.cs-anniv-envelope--2 {
    --envelope-bg: #efd0d2;
    --envelope-light: #fff7ef;
    --envelope-deep: #d5a0a9;
    --envelope-ink: #956b75;
}

.cs-anniv-envelope--3 {
    --envelope-bg: #f6d8d1;
    --envelope-light: #fff8f0;
    --envelope-deep: #dfa8aa;
    --envelope-ink: #9b6d72;
}

.cs-anniv-envelope--4 {
    --envelope-bg: #edc8ce;
    --envelope-light: #fff3ee;
    --envelope-deep: #cf929f;
    --envelope-ink: #91636f;
}

.cs-anniv-envelope-flap {
    position: absolute;
    z-index: 2;
    left: -1px;
    right: -1px;
    top: -1px;
    height: 78px;
    background:
        linear-gradient(155deg, rgba(255, 255, 255, 0.72), transparent 48%),
        linear-gradient(180deg, #fff8f1, #f8ddd9);
    border-bottom: 1px solid rgba(202, 143, 151, 0.34);
    clip-path: polygon(0 0, 100% 0, 50% 91%);
    -webkit-clip-path: polygon(0 0, 100% 0, 50% 91%);
    filter: drop-shadow(0 3px 3px rgba(119, 70, 84, 0.07));
}

.cs-anniv-envelope::before,
.cs-anniv-envelope::after {
    content: "";
    position: absolute;
    z-index: 1;
    bottom: -19px;
    width: 72%;
    height: 92px;
    background: rgba(255, 238, 232, 0.54);
    border-top: 1px solid rgba(202, 143, 151, 0.2);
}

.cs-anniv-envelope::before {
    left: -23%;
    transform: rotate(31deg);
}

.cs-anniv-envelope::after {
    right: -23%;
    transform: rotate(-31deg);
}

.cs-anniv-envelope-lace {
    position: absolute;
    z-index: 4;
    inset: 5px;
    border: 1px dashed rgba(194, 137, 146, 0.42);
    border-radius: 12px;
    opacity: 0.9;
    background:
        radial-gradient(circle at 7px 0, transparent 5px, rgba(255, 253, 247, 0.98) 5.5px 7px, transparent 7.5px)
            0 0 / 14px 14px repeat-x,
        radial-gradient(circle at 7px 14px, transparent 5px, rgba(255, 253, 247, 0.98) 5.5px 7px, transparent 7.5px)
            0 100% / 14px 14px repeat-x;
    pointer-events: none;
}

.cs-anniv-envelope-sprinkles {
    position: absolute;
    z-index: 5;
    inset: 0;
    color: rgba(184, 122, 135, 0.62);
    font-family: Georgia, "Times New Roman", serif;
    pointer-events: none;
}

.cs-anniv-envelope-sprinkles i {
    position: absolute;
    font-style: normal;
    line-height: 1;
    text-shadow: 0 1px rgba(255, 255, 255, 0.75);
}

.cs-anniv-envelope-sprinkles i:nth-child(1) { left: 14px; top: 74px; font-size: 12px; }
.cs-anniv-envelope-sprinkles i:nth-child(2) { right: 16px; top: 25px; font-size: 10px; }
.cs-anniv-envelope-sprinkles i:nth-child(3) { left: 29px; top: 91px; font-size: 15px; }
.cs-anniv-envelope-sprinkles i:nth-child(4) { right: 23px; top: 82px; font-size: 11px; }
.cs-anniv-envelope-sprinkles i:nth-child(5) { right: 47px; top: 99px; font-size: 9px; }

.cs-anniv-envelope-seal {
    position: absolute;
    z-index: 6;
    left: 50%;
    top: 51px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    margin-left: -19px;
    border: 1px solid rgba(168, 92, 108, 0.38);
    border-radius: 50%;
    background:
        radial-gradient(circle at 35% 28%, rgba(255, 238, 234, 0.7), transparent 25%),
        linear-gradient(145deg, #dca1aa, #b96f80);
    box-shadow:
        0 4px 9px rgba(119, 70, 84, 0.18),
        inset 0 0 0 3px rgba(255, 225, 222, 0.18),
        inset 0 0 0 4px rgba(126, 66, 79, 0.12);
    overflow: hidden;
}

.cs-anniv-envelope-seal img {
    display: block;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    opacity: 0.66;
    filter: sepia(1) saturate(0.55) hue-rotate(300deg) brightness(1.38) contrast(0.76);
    mix-blend-mode: screen;
    transform: scale(0.82);
}

.cs-anniv-envelope-date {
    position: absolute;
    z-index: 5;
    left: 16px;
    top: 25px;
    display: flex;
    flex-direction: column;
    color: var(--envelope-ink);
    font-family: Georgia, "Times New Roman", serif;
    text-align: left;
    text-shadow: 0 1px rgba(255, 255, 255, 0.45);
}

.cs-anniv-envelope-date strong {
    font-size: 15px;
    font-weight: 600;
    line-height: 1.1;
    letter-spacing: 0.8px;
}

.cs-anniv-envelope-date span {
    margin-top: 2px;
    font-size: 10px;
    line-height: 1.2;
}

.cs-anniv-envelope-label {
    position: absolute;
    z-index: 5;
    left: 12px;
    right: 12px;
    bottom: 11px;
    color: var(--envelope-ink);
    font-family: "Songti SC", Georgia, serif;
    font-size: 10.5px;
    line-height: 1.25;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.cs-anniv-collection-empty {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 48px 20px 0;
    padding: 30px 22px;
    border: 1px dashed rgba(213, 139, 154, 0.46);
    border-radius: 22px;
    background: rgba(255, 255, 255, 0.36);
    color: #9f7580;
    text-align: center;
}

.cs-anniv-collection-empty-envelope {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 46px;
    margin-bottom: 14px;
    border: 1px solid rgba(213, 139, 154, 0.5);
    border-radius: 8px;
    background: linear-gradient(160deg, #ffe8ee, #f5afbf);
    color: #bd657a;
    font-size: 23px;
    box-shadow: 0 7px 16px rgba(119, 70, 84, 0.12);
}

.cs-anniv-collection-empty strong {
    font-size: 15px;
}

.cs-anniv-collection-empty p {
    margin: 8px 0 0;
    font-size: 12px;
    line-height: 1.65;
}

html[data-appearance="dark"] .cs-anniv-countdown-block,
html[data-appearance="dark"] .cs-anniv-letter-entry {
    background: rgba(44, 44, 46, 0.94);
    border-color: rgba(255, 255, 255, 0.09);
}

html[data-appearance="dark"] .cs-anniv-countdown-heading,
html[data-appearance="dark"] .cs-anniv-letter-entry {
    color: #f5f5f7;
}

html[data-appearance="dark"] .cs-anniv-letter-collection {
    background:
        radial-gradient(circle at 86% 19%, rgba(251, 101, 113, 0.11) 0 3px, transparent 4px),
        linear-gradient(180deg, #1d191b 0%, #2a1e23 100%);
}

html[data-appearance="dark"] .cs-anniv-collection-header {
    background: rgba(35, 29, 31, 0.9);
    border-bottom-color: rgba(255, 255, 255, 0.08);
}

html[data-appearance="dark"] .cs-anniv-collection-heading h2 {
    color: #f5f5f7;
}

html[data-appearance="dark"] .cs-anniv-collection-intro,
html[data-appearance="dark"] .cs-anniv-collection-heading p {
    color: #c7a6ae;
}

html[data-appearance="dark"] .cs-anniv-collection-empty {
    background: rgba(255, 255, 255, 0.04);
    color: #d6b9c0;
}

/* 全屏恋念信阅读器（挂 #app 内；无 #app 时回退整窗） */
.cs-anniv-letter-viewer {
    position: absolute;
    inset: 0;
    z-index: 100240;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: max(18px, var(--safe-area-inset-top, env(safe-area-inset-top, 0px))) 14px max(18px, var(--safe-area-inset-bottom, env(safe-area-inset-bottom, 0px)));
    background: rgba(58, 42, 48, 0.5);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.22s ease;
    box-sizing: border-box;
}

.cs-anniv-letter-viewer--root {
    position: fixed;
    z-index: 13100;
}

.cs-anniv-letter-viewer.is-open {
    opacity: 1;
    pointer-events: auto;
}

.cs-anniv-letter-paper {
    position: relative;
    width: 100%;
    max-width: 420px;
    max-height: 100%;
    display: flex;
    flex-direction: column;
    box-sizing: border-box;
    background:
        linear-gradient(180deg, #fffdf8 0%, #fff6ee 100%);
    border: 1px solid rgba(214, 178, 148, 0.5);
    border-radius: 14px;
    box-shadow: 0 18px 60px rgba(58, 42, 48, 0.3);
    padding: 20px 18px 18px;
}

.cs-anniv-letter-close {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 50%;
    background: rgba(106, 76, 86, 0.08);
    color: #6a4c56;
    font-size: 15px;
    line-height: 1;
    cursor: pointer;
}

.cs-anniv-letter-close:active {
    opacity: 0.75;
}

.cs-anniv-letter-refresh {
    position: absolute;
    top: 10px;
    right: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    padding: 0;
    border: 1px solid rgba(185, 135, 144, 0.2);
    border-radius: 50%;
    background: rgba(255, 245, 240, 0.9);
    color: #9f6f79;
    font-size: 14px;
    line-height: 1;
    cursor: pointer;
    box-shadow: 0 2px 7px rgba(106, 76, 86, 0.06);
    -webkit-tap-highlight-color: rgba(251, 101, 113, 0.12);
}

.cs-anniv-letter-refresh:active {
    transform: scale(0.94);
}

.cs-anniv-letter-refresh:disabled {
    cursor: wait;
    opacity: 0.62;
}

.cs-anniv-letter-refresh.is-loading span {
    animation: cs-anniv-tool-turn 1.15s linear infinite;
}

@keyframes cs-anniv-tool-turn {
    to { transform: rotate(360deg); }
}

.cs-anniv-letter-kicker {
    font-size: 12px;
    color: #b98790;
    margin-bottom: 8px;
    padding-right: 76px;
}

.cs-anniv-letter-title {
    margin: 0 0 12px;
    font-size: 19px;
    font-weight: 700;
    color: #5c3f49;
    line-height: 1.4;
    padding-bottom: 10px;
    border-bottom: 1px dashed rgba(185, 135, 144, 0.45);
    word-break: break-word;
}

.cs-anniv-letter-refresh-status {
    display: none;
    flex-shrink: 0;
    margin: -4px 0 10px;
    padding: 7px 9px;
    border-radius: 8px;
    font-size: 11px;
    line-height: 1.45;
}

.cs-anniv-letter-refresh-status:not(:empty) {
    display: block;
}

.cs-anniv-letter-refresh-status.is-loading {
    background: #fff5e8;
    color: #9b7148;
}

.cs-anniv-letter-refresh-status.is-success {
    background: #edf7ef;
    color: #55785b;
}

.cs-anniv-letter-refresh-status.is-error {
    background: #fff0f2;
    color: #a45967;
}

.cs-anniv-letter-body {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    -ms-overflow-style: none;
    scrollbar-width: none;
    font-size: 15px;
    line-height: 1.9;
    color: #4c3640;
    white-space: pre-wrap;
    word-break: break-word;
    padding-right: 2px;
}

/* ===== 恋念记录折叠卡（信件阅读器底部） ===== */

.cs-anniv-letter-postchat {
    flex-shrink: 0;
    margin-top: 12px;
    border: 1px solid rgba(231, 197, 202, 0.85);
    border-radius: 12px;
    background: rgba(255, 245, 240, 0.85);
    overflow: hidden;
}

.cs-anniv-letter-postchat[hidden] {
    display: none !important;
}

.cs-anniv-letter-postchat-toggle {
    display: flex;
    align-items: center;
    gap: 7px;
    width: 100%;
    min-height: 44px;
    box-sizing: border-box;
    padding: 9px 12px;
    border: 0;
    background: transparent;
    color: #9a7c85;
    font-size: 13px;
    cursor: pointer;
    text-align: left;
    -webkit-tap-highlight-color: rgba(251, 101, 113, 0.1);
}

.cs-anniv-letter-postchat-icon {
    font-size: 14px;
}

.cs-anniv-letter-postchat-text {
    flex: 1;
    min-width: 0;
    font-weight: 600;
    color: #7c5b65;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.cs-anniv-letter-postchat-chevron {
    font-size: 12px;
    color: #c39aa3;
    transition: transform 0.22s ease;
}

.cs-anniv-letter-postchat.is-expanded .cs-anniv-letter-postchat-chevron {
    transform: rotate(180deg);
}

.cs-anniv-letter-postchat-panel {
    max-height: 32vh;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    -ms-overflow-style: none;
    scrollbar-width: none;
    padding: 4px 12px 11px;
    border-top: 1px dashed rgba(231, 197, 202, 0.8);
}

.cs-anniv-letter-postchat-panel::-webkit-scrollbar {
    display: none;
    width: 0;
    height: 0;
}

.cs-anniv-letter-postchat-panel[hidden] {
    display: none !important;
}

.cs-anniv-letter-postchat-line {
    display: flex;
    align-items: baseline;
    gap: 6px;
    padding: 5px 0;
    font-size: 12.5px;
    line-height: 1.6;
    border-bottom: 1px dotted rgba(231, 197, 202, 0.5);
}

.cs-anniv-letter-postchat-line:last-child {
    border-bottom: 0;
}

.cs-anniv-letter-postchat-name {
    flex-shrink: 0;
    max-width: 92px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-weight: 600;
    color: #b06a78;
}

.cs-anniv-letter-postchat-msg {
    flex: 1;
    min-width: 0;
    color: #5c4650;
    word-break: break-word;
}

html[data-appearance="dark"] .cs-anniv-letter-postchat {
    background: rgba(48, 39, 42, 0.85);
    border-color: rgba(214, 178, 148, 0.22);
}

html[data-appearance="dark"] .cs-anniv-letter-postchat-text {
    color: #e3cdd3;
}

html[data-appearance="dark"] .cs-anniv-letter-postchat-panel {
    border-top-color: rgba(214, 178, 148, 0.28);
}

html[data-appearance="dark"] .cs-anniv-letter-postchat-line {
    border-bottom-color: rgba(214, 178, 148, 0.18);
}

html[data-appearance="dark"] .cs-anniv-letter-postchat-name {
    color: #d99aa8;
}

html[data-appearance="dark"] .cs-anniv-letter-postchat-msg {
    color: #cdbcc2;
}

html[data-appearance="dark"] .cs-anniv-letter-paper {
    background: linear-gradient(180deg, #26211e 0%, #2b2320 100%);
    border-color: rgba(214, 178, 148, 0.24);
}

html[data-appearance="dark"] .cs-anniv-letter-title {
    color: #f0e6e0;
    border-bottom-color: rgba(214, 178, 148, 0.3);
}

html[data-appearance="dark"] .cs-anniv-letter-body {
    color: #ddcfc9;
}

html[data-appearance="dark"] .cs-anniv-letter-close {
    background: rgba(255, 255, 255, 0.1);
    color: #f0e6e0;
}

html[data-appearance="dark"] .cs-anniv-letter-refresh {
    background: rgba(255, 255, 255, 0.09);
    border-color: rgba(255, 255, 255, 0.08);
    color: #e5cbd1;
}

html[data-appearance="dark"] .cs-anniv-letter-refresh-status.is-loading {
    background: rgba(156, 111, 57, 0.18);
    color: #dfbe91;
}

html[data-appearance="dark"] .cs-anniv-letter-refresh-status.is-success {
    background: rgba(73, 128, 82, 0.18);
    color: #a9d1ae;
}

html[data-appearance="dark"] .cs-anniv-letter-refresh-status.is-error {
    background: rgba(164, 89, 103, 0.18);
    color: #e3aab4;
}