:root {
    --left-bg: #0a0a0a;
    /* 深黑 */
    --left-text: #ffffff;
    --left-accent: #2de2e6;
    /* 赛博青 */

    --right-bg: #f0f0f0;
    /* 纯白/灰白 */
    --right-text: #1a1a1a;
    --right-accent: #ff2a6d;
    /* 霓虹红 */

    --footer-bg: #050505;
    /* 页脚背景色 */

    /* 显式定义 MiSans */
    --font-primary: 'MiSans', sans-serif;
    --font-serif: 'Noto Serif SC', serif;

    --ease-spring: cubic-bezier(0.175, 0.885, 0.32, 1.275);
    /* 弹性缓动 */
    --ease-smooth: cubic-bezier(0.65, 0, 0.35, 1);
    /* 丝滑缓动 */

    /* Loading 页面变量 */
    --bg-color: #050505;
    --accent-glow: linear-gradient(135deg, #00C6FB 0%, #005BEA 100%);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    /* font-family: 'MiSans', sans-serif;  - Tailwind overrides this, handled in body */
}

html,
body {
    width: 100%;
    /* overflow-x: hidden; */
    /* Let loading screen handle overflow */
}

body {
    /* background-color: var(--left-bg); */
    /* Handled by specific sections */
    font-family: 'MiSans', sans-serif;
    /* Default for the main app */
}

/* =========================================
   PART 1: LOADING SCREEN STYLES
   ========================================= */

#loading-screen {
    font-family: 'Space Grotesk', sans-serif;
    background-color: var(--bg-color);
    color: #fff;
    /* overflow: hidden; */
    /* Controlled by container */
}

/* 1. 胶片噪点质感 (Film Grain) */
.noise-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 50;
    opacity: 0.07;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

/* 2. 液态光球 (Liquid Orb) */
.orb-wrapper {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 300px;
    height: 300px;
    z-index: 0;
    animation: rotate 20s linear infinite;
}

.liquid-orb {
    width: 100%;
    height: 100%;
    background: conic-gradient(from 180deg at 50% 50%, #FF2E63 0deg, #08D9D6 72deg, #252A34 144deg, #EAEAEA 216deg, #FF2E63 360deg);
    background: linear-gradient(45deg, #4158D0 0%, #C850C0 46%, #FFCC70 100%);
    filter: blur(60px);
    border-radius: 40% 60% 70% 30% / 40% 50% 60% 50%;
    animation: morph 8s ease-in-out infinite alternate, breathe 5s ease-in-out infinite alternate;
    opacity: 0.8;
}

@keyframes morph {
    0% {
        border-radius: 40% 60% 60% 40% / 60% 30% 70% 40%;
    }

    100% {
        border-radius: 40% 60%;
    }
}

@keyframes rotate {
    from {
        transform: translate(-50%, -50%) rotate(0deg);
    }

    to {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

@keyframes breathe {
    0% {
        transform: scale(0.95);
        opacity: 0.7;
        filter: blur(55px);
    }

    100% {
        transform: scale(1.25);
        opacity: 0.9;
        filter: blur(65px);
    }
}

/* 3. 前景磨砂玻璃 (Frosted Glass) */
.glass-foreground {
    position: relative;
    z-index: 10;
    background: rgba(5, 5, 5, 0.4);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.05);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

/* 4. 进度条动画 */
.progress-line {
    width: 0%;
    transition: width 0.1s ease-out;
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.5);
}

/* 5. Logo 高级处理 */
.sponsor-img {
    opacity: 0.85;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    filter: brightness(1.1);
}

.sponsor-group:hover .sponsor-img {
    opacity: 1;
    transform: scale(1.05);
    filter: brightness(1.2) drop-shadow(0 0 10px rgba(255, 255, 255, 0.2));
}

/* 文字出现动画 */
.reveal-text {
    animation: reveal 1s cubic-bezier(0.77, 0, 0.175, 1) forwards;
    transform: translateY(100%);
    opacity: 0;
}

@keyframes reveal {
    to {
        transform: translateY(0);
        opacity: 1;
    }
}


/* =========================================
   PART 2: MAIN APP ORIGINAL STYLES
   ========================================= */

/* Use #main-app-container to scope if necessary, but original selector specificity is high */

/* 首屏容器：占满一屏 */
.container {
    position: relative;
    width: 100%;
    height: 100vh;
    /* 强制占满视口高度 */
    display: flex;
    transition: filter 0.5s ease;
}


/* 分屏基础样式 */
.split {
    position: relative;
    width: 50%;
    height: 100%;
    overflow: hidden;
    transition: width 0.8s var(--ease-smooth);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 0 10%;
}

.left {
    background-color: var(--left-bg);
    color: var(--left-text);
}

.left .title .dot {
    color: var(--left-accent);
}

.left .btn {
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #fff;
}

.left .btn:hover {
    background: #fff;
    color: #000;
    border-color: #fff;
}

.right {
    background-color: var(--right-bg);
    color: var(--right-text);
}

.right .title .dot {
    color: var(--right-accent);
}

.right .btn {
    border: 1px solid rgba(0, 0, 0, 0.2);
    color: #000;
}

.right .btn:hover {
    background: #000;
    color: #fff;
    border-color: #000;
}

.container:hover .split {
    width: 40%;
    opacity: 0.7;
    filter: blur(2px);
}

.container .split:hover {
    width: 60%;
    opacity: 1;
    filter: blur(0);
}

.content {
    position: relative;
    z-index: 10;
    max-width: 600px;
    transform: translateY(20px);
    transition: transform 0.8s var(--ease-smooth);
}

.split:hover .content {
    transform: translateY(0);
}

.label {
    font-weight: 400;
    font-size: 0.8rem;
    letter-spacing: 4px;
    text-transform: uppercase;
    opacity: 0.5;
    display: block;
    margin-bottom: 1rem;
}

.title {
    /* Note: Tailwind might override h1 sizes, check this */
    font-family: 'MiSans', sans-serif;
    font-size: 5rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    white-space: nowrap;
}

.description {
    font-weight: 400;
    font-size: 1.1rem;
    line-height: 1.6;
    opacity: 0.8;
    margin-bottom: 3rem;
}

.btn {
    padding: 1rem 2.5rem;
    font-size: 1rem;
    font-weight: 700;
    background: transparent;
    cursor: pointer;
    transition: all 0.4s ease;
    text-transform: uppercase;
    letter-spacing: 2px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    border-radius: 0;
    /* Reset tailwind if any */
}

.btn .arrow {
    transition: transform 0.3s ease;
}

.btn:hover .arrow {
    transform: translateX(5px);
}

.btn.small {
    padding: 0.75rem 1.5rem;
    font-size: 0.85rem;
    opacity: 0.8;
}

.btn.small:hover {
    opacity: 1;
}

/* Disabled Button Style */
.btn.is-disabled {
    opacity: 0.5;
    cursor: not-allowed;
    border-color: rgba(255, 255, 255, 0.1);
    background: transparent;
}

.btn.is-disabled:hover {
    background: transparent;
    color: #fff;
    border-color: rgba(255, 255, 255, 0.1);
    transform: none;
}

.btn.is-disabled .arrow {
    transform: none !important;
}

.bg-visual {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    overflow: hidden;
}

.shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
    transition: transform 1s var(--ease-smooth);
}

.shape-1 {
    width: 600px;
    height: 600px;
    background: var(--left-accent);
    bottom: -200px;
    left: -200px;
}

.shape-2 {
    width: 700px;
    height: 700px;
    background: var(--right-accent);
    top: -200px;
    right: -200px;
}

.split:hover .shape {
    transform: scale(1.2);
    opacity: 0.6;
}

#fireworks-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 5;
    pointer-events: none;
    mix-blend-mode: screen;
}

/* --- 全新页脚区域 (Page Footer) --- */
.page-footer {
    position: relative;
    width: 100%;
    background-color: var(--footer-bg);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 6rem 5%;
    color: #fff;
    font-size: 0.9rem;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    flex-wrap: wrap;
    gap: 3rem;
}

/* 左侧：技术规格组 */
.tech-spec {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    font-family: 'Courier New', Courier, monospace;
    /* 回退到等宽字体 */
    color: rgba(255, 255, 255, 0.4);
    font-size: 0.75rem;
    letter-spacing: 1px;
}

.spec-group {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    transition: color 0.3s ease;
}

.spec-group:hover {
    color: rgba(255, 255, 255, 0.9);
}

.spec-label {
    font-size: 0.6rem;
    font-weight: 700;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.2);
    margin-bottom: 2px;
}

.spec-value {
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 6px;
}

.code-font {
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
}

.spec-divider {
    width: 1px;
    height: 20px;
    background-color: rgba(255, 255, 255, 0.1);
    transform: rotate(15deg);
}

/* 状态呼吸灯 */
.status-dot {
    width: 6px;
    height: 6px;
    background-color: #00ff88;
    /* 极客绿 */
    border-radius: 50%;
    box-shadow: 0 0 8px #00ff88;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(0.95);
        opacity: 0.7;
    }

    50% {
        transform: scale(1.2);
        opacity: 1;
        box-shadow: 0 0 12px #00ff88;
    }

    100% {
        transform: scale(0.95);
        opacity: 0.7;
    }
}

/* 右侧：署名区块 */
.signature-block {
    text-align: right;
}

.made-by {
    font-size: 0.6rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.3);
    margin-bottom: 0.5rem;
}

.author-name {
    font-family: var(--font-serif);
    /* 使用衬线体营造高级感 */
    font-size: 1.5rem;
    font-weight: 300;
    letter-spacing: 1px;
    color: #fff;
    margin-bottom: 0.25rem;
    background: linear-gradient(90deg, #fff, #aaa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.copyright {
    font-size: 0.65rem;
    color: rgba(255, 255, 255, 0.2);
    letter-spacing: 1px;
}

/* 移动端适配 */
@media (max-width: 768px) {

    /* --- 首屏适配 --- */
    .container {
        flex-direction: column;
        height: 100vh;
    }

    .split {
        width: 100%;
        height: 50%;
        padding: 1.5rem;
    }

    .container:hover .split,
    .container .split:hover {
        height: 50%;
        width: 100%;
    }

    .title {
        font-size: 2.8rem;
        margin-bottom: 0.5rem;
    }

    .description {
        font-size: 1rem;
        margin-bottom: 2rem;
    }

    /* --- 页脚精细化适配 --- */
    .page-footer {
        padding: 4rem 2rem;
        /* 增加水平内边距 */
    }

    .footer-content {
        flex-direction: column;
        align-items: center;
        gap: 2.5rem;
        /* 略微收紧间距 */
        text-align: center;
        width: 100%;
    }

    /* 技术参数：移动端改为紧凑网格或流式布局 */
    .tech-spec {
        flex-direction: column;
        gap: 1.25rem;
        width: 100%;
        padding-bottom: 2.5rem;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        /* 增加极细分割线 */
    }

    .spec-group {
        align-items: center;
        /* 确保子元素居中 */
    }

    .spec-label {
        letter-spacing: 2px;
        margin-bottom: 4px;
    }

    .spec-value {
        font-size: 0.8rem;
        /* 略微放大字体以提升阅读体验 */
    }

    .spec-divider {
        display: none;
        /* 移动端不需要斜线分割 */
    }

    /* 署名区块 */
    .signature-block {
        text-align: center;
        width: 100%;
    }

    .author-name {
        font-size: 1.8rem;
        /* 移动端名字更醒目 */
    }
}

/* --- 灵动客服胶囊系统 (Dynamic Support Capsule) --- */

/* 1. 背景虚化遮罩 */
.support-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(0px);
    /* 初始无模糊 */
    -webkit-backdrop-filter: blur(0px);
    z-index: 998;
    opacity: 0;
    pointer-events: none;
    /* 初始不阻挡点击 */
    transition: all 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
    /* 更慢、更优雅的缓动 */
}

.support-backdrop.is-active {
    opacity: 1;
    backdrop-filter: blur(15px);
    /* 激活时深度模糊 */
    -webkit-backdrop-filter: blur(15px);
    pointer-events: auto;
}

/* 2. 胶囊容器 */
.support-widget {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 999;
    width: 140px;
    height: 48px;
    border-radius: 24px;
    background: rgba(20, 20, 20, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    cursor: pointer;
    overflow: hidden;
    transition: all 0.9s cubic-bezier(0.19, 1, 0.22, 1);
    /* 极致丝滑的旗舰级动效 */
    color: #fff;
}

.support-widget:hover {
    /* transform: scale(1.02);  Removed to prevent conflict with closing animation (translate vs scale interpolation) */
    border-color: rgba(255, 255, 255, 0.4);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
}

/* 3. 激活状态 (变为长胶囊/面板) */
.support-widget.is-expanded {
    width: 380px;
    height: 500px;
    border-radius: 20px;
    bottom: 50%;
    right: 50%;
    transform: translate(50%, 50%);
    /* 移动到屏幕中心 */
    background: #0f0f0f;
    border-color: rgba(255, 255, 255, 0.08);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5);
    cursor: default;
}

/* 4. 胶囊初始内容 (Trigger) */
.capsule-trigger {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: opacity 0.3s ease;
    pointer-events: none;
    /* 让点击穿透到父容器 */
}

.support-widget.is-expanded .capsule-trigger {
    opacity: 0;
    pointer-events: none;
}

.capsule-trigger .icon {
    color: #00ff88;
    font-size: 0.6rem;
    animation: blink 2s infinite;
}

/* 5. 展开后内容 (Content) */
.capsule-content {
    opacity: 0;
    visibility: hidden;
    display: flex;
    flex-direction: column;
    height: 100%;
    padding: 1.5rem;
    transition: all 0.5s ease 0.4s;
    /* 延迟 0.4s 显示，等待胶囊展开大部分 */
}

.support-widget.is-expanded .capsule-content {
    opacity: 1;
    visibility: visible;
}

/* 聊天界面样式 */
.chat-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.chat-header .status {
    font-size: 0.7rem;
    font-family: 'Consolas', monospace;
    color: #00ff88;
    letter-spacing: 1px;
}

.chat-header .close-btn {
    cursor: pointer;
    font-size: 1.5rem;
    line-height: 1;
    color: #666;
    transition: color 0.3s;
}

.chat-header .close-btn:hover {
    color: #fff;
}

.chat-body {
    flex: 1;
    overflow-y: auto;
}

.message.system {
    background: rgba(255, 255, 255, 0.03);
    padding: 1rem;
    border-radius: 12px;
    border-top-left-radius: 2px;
    font-size: 0.9rem;
    line-height: 1.6;
    color: #ccc;
    margin-bottom: 0.8rem;
    animation: messageSlideIn 0.3s ease;
}

/* 用户消息样式 */
.message.user {
    background: linear-gradient(135deg, #00ff88 0%, #00cc6a 100%);
    padding: 1rem;
    border-radius: 12px;
    border-top-right-radius: 2px;
    font-size: 0.9rem;
    line-height: 1.6;
    color: #000;
    margin-left: 20%;
    margin-bottom: 0.8rem;
    animation: messageSlideIn 0.3s ease;
}

/* 消息滑入动画 */
@keyframes messageSlideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 加载点动画 */
.message.loading {
    background: rgba(255, 255, 255, 0.02);
    padding: 1.2rem;
}

.loading-dots {
    display: flex;
    gap: 6px;
    align-items: center;
}

.loading-dots span {
    width: 8px;
    height: 8px;
    background: #00ff88;
    border-radius: 50%;
    animation: dotPulse 1.4s infinite;
}

.loading-dots span:nth-child(2) {
    animation-delay: 0.2s;
}

.loading-dots span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes dotPulse {

    0%,
    80%,
    100% {
        transform: scale(0.6);
        opacity: 0.4;
    }

    40% {
        transform: scale(1);
        opacity: 1;
    }
}

.chat-input-area {
    margin-top: 1rem;
    display: flex;
    gap: 10px;
    position: relative;
}

.chat-input-area input {
    flex: 1;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 0.8rem 1rem;
    color: #fff;
    outline: none;
    font-family: inherit;
    transition: border-color 0.3s;
}

.chat-input-area input:focus {
    border-color: rgba(255, 255, 255, 0.3);
}

.chat-input-area .send-btn {
    background: #fff;
    color: #000;
    border: none;
    width: 40px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: bold;
    transition: transform 0.2s;
}

.chat-input-area .send-btn:hover {
    transform: scale(1.05);
}

/* 移动端胶囊适配 */
@media (max-width: 768px) {
    .support-widget {
        right: 50%;
        transform: translateX(50%);
        /* 居中 */
        bottom: 1.5rem;
    }

    .support-widget.is-expanded {
        width: 90%;
        height: 60vh;
        bottom: 50%;
        right: 50%;
        transform: translate(50%, 50%);
    }
}