:root {
    --bg: #ffffff;
    --text: #1a1a1a;
    --subtext: #4d4d4d;
    --border: #e5e5e5;
    --shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    --shadow-heavy: 0 20px 48px rgba(0, 0, 0, 0.16);
    --overlay: rgba(0, 0, 0, 0.4);
    --accent: #0078d4;
    /* Windows 蓝 */
}

* {
    box-sizing: border-box;
}

html,
body {
    height: 100%;
}

body {
    margin: 0;
    background: linear-gradient(135deg, #f0f4f8 0%, #e8eef5 50%, #dfe7f0 100%);
    color: var(--text);
    font-family: "Noto Sans SC", Segoe UI, system-ui, -apple-system, Roboto, Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    overflow: hidden;
}

#popup-layer {
    position: fixed;
    inset: 0;
    pointer-events: none;
    /* 允许下层点击通过（初始 modal 期间被遮罩覆盖） */
}

/* 入场弹窗 */
.modal-backdrop {
    position: fixed;
    inset: 0;
    background: var(--overlay);
    display: grid;
    place-items: center;
    z-index: 9999;
}

.modal {
    width: min(92vw, 520px);
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: var(--shadow-heavy);
    text-align: left;
    overflow: hidden;
    animation: modal-appear 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

.modal .titlebar {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 14px;
    background: #f3f3f3;
    border-bottom: 1px solid var(--border);
}

.modal .titlebar .icon {
    font-size: 18px;
}

.modal .titlebar .title {
    font-weight: 700;
}

.modal .content {
    padding: 16px 16px 8px;
    color: var(--subtext);
}

.modal .actions {
    padding: 0 16px 16px;
    display: flex;
    gap: 10px;
    justify-content: flex-end;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 36px;
    padding: 0 14px;
    border-radius: 4px;
    border: 1px solid var(--border);
    cursor: pointer;
    font-weight: 600;
    letter-spacing: .2px;
    background: #f7f7f7;
}

.btn.primary {
    background: var(--accent);
    color: #fff;
    border-color: #0a6ecf;
}

.btn:hover {
    filter: brightness(0.98);
}

.btn.primary:hover {
    filter: brightness(1.05);
}

.btn:active {
    transform: translateY(1px);
}

/* 屏幕弹窗（温馨提示） */
.popup {
    position: absolute;
    width: 230px;
    color: var(--text);
    background: #ffffff;
    border-radius: 7px;
    border: 1px solid var(--border);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15), 0 8px 32px rgba(0, 0, 0, 0.08);
    font-size: 13px;
    line-height: 1.4;
    pointer-events: none;
    user-select: none;
    transform-origin: center;
    overflow: hidden;
}

.popup .header {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 3px 8px;
    background: #f3f3f3;
    border-bottom: 1px solid var(--border);
}

.popup .header .icon {
    font-size: 12px;
}

.popup .header .title {
    font-weight: 800;
    font-size: 11px;
}

.popup .content {
    padding: 6px 10px;
    color: var(--text);
    font-size: 18px;
    font-weight: 600;
    line-height: 1.25;
    text-align: center;
}

/* 不同颜色主题的弹窗背景 */
.popup.theme-blue .header {
    background: #e3f2fd;
    border-bottom-color: #bbdefb;
}

.popup.theme-blue .content {
    background: #f1f8ff;
}

.popup.theme-green .header {
    background: #e8f5e9;
    border-bottom-color: #c8e6c9;
}

.popup.theme-green .content {
    background: #f1f8f4;
}

.popup.theme-orange .header {
    background: #fff3e0;
    border-bottom-color: #ffe0b2;
}

.popup.theme-orange .content {
    background: #fffaf3;
}

.popup.theme-purple .header {
    background: #f3e5f5;
    border-bottom-color: #e1bee7;
}

.popup.theme-purple .content {
    background: #faf5fc;
}

.popup.theme-pink .header {
    background: #fce4ec;
    border-bottom-color: #f8bbd0;
}

.popup.theme-pink .content {
    background: #fff0f5;
}

.popup.theme-yellow .header {
    background: #fffde7;
    border-bottom-color: #fff9c4;
}

.popup.theme-yellow .content {
    background: #fffef7;
}

.popup.theme-cyan .header {
    background: #e0f7fa;
    border-bottom-color: #b2ebf2;
}

.popup.theme-cyan .content {
    background: #f0fcff;
}

.popup.theme-lime .header {
    background: #f9fbe7;
    border-bottom-color: #f0f4c3;
}

.popup.theme-lime .content {
    background: #fdfef8;
}

.popup.theme-red .header {
    background: #ffebee;
    border-bottom-color: #ffcdd2;
}

.popup.theme-red .content {
    background: #fff5f5;
}

.popup.theme-teal .header {
    background: #e0f2f1;
    border-bottom-color: #b2dfdb;
}

.popup.theme-teal .content {
    background: #f0faf9;
}

.popup.theme-indigo .header {
    background: #e8eaf6;
    border-bottom-color: #c5cae9;
}

.popup.theme-indigo .content {
    background: #f3f4fb;
}

.popup.theme-amber .header {
    background: #fff8e1;
    border-bottom-color: #ffecb3;
}

.popup.theme-amber .content {
    background: #fffef5;
}

.popup.theme-rose .header {
    background: #fce4ec;
    border-bottom-color: #f8bbd0;
}

.popup.theme-rose .content {
    background: #fef5f8;
}

.popup.theme-mint .header {
    background: #e8f8f5;
    border-bottom-color: #c8ebe3;
}

.popup.theme-mint .content {
    background: #f5fcfa;
}

.popup.theme-peach .header {
    background: #fff0e5;
    border-bottom-color: #ffe0c7;
}

.popup.theme-peach .content {
    background: #fffaf5;
}

.popup.theme-lavender .header {
    background: #f0ebf8;
    border-bottom-color: #ddd0f0;
}

.popup.theme-lavender .content {
    background: #f9f6fc;
}

.popup.theme-coral .header {
    background: #ffe4e1;
    border-bottom-color: #ffc4bd;
}

.popup.theme-coral .content {
    background: #fff7f6;
}

.popup.theme-sky .header {
    background: #e1f5fe;
    border-bottom-color: #b3e5fc;
}

.popup.theme-sky .content {
    background: #f0fbff;
}

.popup.theme-lemon .header {
    background: #fffef0;
    border-bottom-color: #fff9c8;
}

.popup.theme-lemon .content {
    background: #fffffa;
}

@media (max-width: 640px) {
    .popup {
        width: min(230px, 85vw);
        font-size: 13px;
    }

    .popup .content {
        font-size: 16px;
    }
}

/* 动画效果 */
@keyframes modal-appear {
    0% {
        opacity: 0;
        transform: scale(0.7) translateY(-20px);
    }

    100% {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

/* 从上方弹出 */
@keyframes popup-from-top {
    0% {
        opacity: 0;
        transform: scale(0.3) translateY(-60px);
    }

    60% {
        opacity: 1;
        transform: scale(1.08) translateY(0);
    }

    80% {
        transform: scale(0.95) translateY(0);
    }

    100% {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

/* 从下方弹出 */
@keyframes popup-from-bottom {
    0% {
        opacity: 0;
        transform: scale(0.3) translateY(60px);
    }

    60% {
        opacity: 1;
        transform: scale(1.08) translateY(0);
    }

    80% {
        transform: scale(0.95) translateY(0);
    }

    100% {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

/* 从左边弹出 */
@keyframes popup-from-left {
    0% {
        opacity: 0;
        transform: scale(0.3) translateX(-60px);
    }

    60% {
        opacity: 1;
        transform: scale(1.08) translateX(0);
    }

    80% {
        transform: scale(0.95) translateX(0);
    }

    100% {
        opacity: 1;
        transform: scale(1) translateX(0);
    }
}

/* 从右边弹出 */
@keyframes popup-from-right {
    0% {
        opacity: 0;
        transform: scale(0.3) translateX(60px);
    }

    60% {
        opacity: 1;
        transform: scale(1.08) translateX(0);
    }

    80% {
        transform: scale(0.95) translateX(0);
    }

    100% {
        opacity: 1;
        transform: scale(1) translateX(0);
    }
}

/* 从左上角弹出 */
@keyframes popup-from-topleft {
    0% {
        opacity: 0;
        transform: scale(0.3) translate(-50px, -50px);
    }

    60% {
        opacity: 1;
        transform: scale(1.08) translate(0, 0);
    }

    80% {
        transform: scale(0.95) translate(0, 0);
    }

    100% {
        opacity: 1;
        transform: scale(1) translate(0, 0);
    }
}

/* 从右上角弹出 */
@keyframes popup-from-topright {
    0% {
        opacity: 0;
        transform: scale(0.3) translate(50px, -50px);
    }

    60% {
        opacity: 1;
        transform: scale(1.08) translate(0, 0);
    }

    80% {
        transform: scale(0.95) translate(0, 0);
    }

    100% {
        opacity: 1;
        transform: scale(1) translate(0, 0);
    }
}

/* 从左下角弹出 */
@keyframes popup-from-bottomleft {
    0% {
        opacity: 0;
        transform: scale(0.3) translate(-50px, 50px);
    }

    60% {
        opacity: 1;
        transform: scale(1.08) translate(0, 0);
    }

    80% {
        transform: scale(0.95) translate(0, 0);
    }

    100% {
        opacity: 1;
        transform: scale(1) translate(0, 0);
    }
}

/* 从右下角弹出 */
@keyframes popup-from-bottomright {
    0% {
        opacity: 0;
        transform: scale(0.3) translate(50px, 50px);
    }

    60% {
        opacity: 1;
        transform: scale(1.08) translate(0, 0);
    }

    80% {
        transform: scale(0.95) translate(0, 0);
    }

    100% {
        opacity: 1;
        transform: scale(1) translate(0, 0);
    }
}

/* 动画类 */
.anim-top {
    animation: popup-from-top 0.55s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

.anim-bottom {
    animation: popup-from-bottom 0.55s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

.anim-left {
    animation: popup-from-left 0.55s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

.anim-right {
    animation: popup-from-right 0.55s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

.anim-topleft {
    animation: popup-from-topleft 0.55s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

.anim-topright {
    animation: popup-from-topright 0.55s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

.anim-bottomleft {
    animation: popup-from-bottomleft 0.55s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

.anim-bottomright {
    animation: popup-from-bottomright 0.55s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

/* 右下角透明小球 */
#float-balls {
    position: fixed;
    right: 30px;
    bottom: 30px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    z-index: 10000;
}

.float-ball {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    pointer-events: auto;
}

.float-ball span {
    color: #1a1a1a;
    font-size: 12px;
    font-weight: 600;
    text-align: center;
}

.float-ball:hover {
    background: rgba(255, 255, 255, 0.85);
    transform: scale(1.1);
    box-shadow: 0 6px 30px rgba(0, 0, 0, 0.25);
}

.float-ball:active {
    transform: scale(0.95);
}

/* 小球出现动画 */
@keyframes ball-appear {
    0% {
        opacity: 0;
        transform: scale(0) translateX(100px);
    }

    60% {
        opacity: 1;
        transform: scale(1.15) translateX(0);
    }

    80% {
        transform: scale(0.9) translateX(0);
    }

    100% {
        opacity: 1;
        transform: scale(1) translateX(0);
    }
}

#float-balls.show .float-ball {
    animation: ball-appear 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

#float-balls.show .float-ball:nth-child(2) {
    animation-delay: 0.15s;
}

@media (max-width: 640px) {
    #float-balls {
        right: 20px;
        bottom: 20px;
        gap: 10px;
    }

    .float-ball {
        width: 40px;
        height: 40px;
    }

    .float-ball span {
        font-size: 11px;
    }
}


#nwh {
    font-size: 66px;
}