* {scrollbar-width: none;margin: 0;padding: 0;box-sizing: border-box;}
:root.light body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
    background:
        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 320'%3E%3Cpath fill='%234B5563' fill-opacity='1' d='M0,256L80,245.3C160,235,320,213,480,218.7C640,224,800,256,960,261.3C1120,267,1280,245,1360,234.7L1440,224L1440,320L0,320Z' /%3E%3C/svg%3E"),
        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 320'%3E%3Cpath fill='%236B7280' fill-opacity='0.6' d='M0,160L48,144C96,128,192,96,288,106.7C384,117,480,171,576,186.7C672,203,768,181,864,165.3C960,149,1056,139,1152,149.3C1248,160,1344,192,1392,208L1440,224L1440,320L0,320Z' /%3E%3C/svg%3E"),
        radial-gradient(ellipse 80% 80% at 10% 10%, rgba(120, 90, 200, 0.17), transparent 70%),
        radial-gradient(ellipse 180% 120% at 75% 75%, rgba(80, 150, 220, 0.16), transparent 72%),
        radial-gradient(ellipse 110% 80% at 50% 50%, rgba(14, 55, 87, 0.16), transparent 60%),
        radial-gradient(ellipse 130% 150% at 100% 10%, rgba(80, 230, 255, 0.19), transparent 70%),
        radial-gradient(ellipse 150% 60% at 90% 90%, rgba(255, 100, 200, 0.18), transparent 55%),
        radial-gradient(ellipse 150% 90% at 10% 90%, rgba(140, 255, 180, 0.18), transparent 60%),
        #fff; /* 纯白底色 */

    /* 背景控制：太阳不重复，山水底部水平重复，天空不重复 */
    background-repeat: no-repeat, no-repeat, no-repeat, no-repeat, no-repeat, no-repeat;
    /* 位置控制：太阳左上，山水底部对齐 */
    background-position:bottom left, bottom left, bottom left, center, center, center, center, center, center;
    /* 尺寸控制：山水高度自适应，宽度铺满 */
    background-size: auto, 100% auto, 100% auto, 100% auto, cover, cover, cover, cover, cover, cover;

    z-index: -1;
}
:root body {
    background:
        radial-gradient(ellipse 80% 80% at 10% 10%, rgba(120, 90, 200, 0.12), transparent 70%),
        radial-gradient(ellipse 180% 120% at 75% 75%, rgba(80, 150, 220, 0.12), transparent 72%),
        radial-gradient(ellipse 110% 80% at 50% 50%, rgba(14, 55, 87, 0.06), transparent 60%),
        radial-gradient(ellipse 130% 150% at 100% 10%, rgba(80, 230, 255, 0.11), transparent 70%),
        radial-gradient(ellipse 150% 60% at 90% 90%, rgba(255, 100, 200, 0.12), transparent 55%),
        radial-gradient(ellipse 150% 90% at 10% 90%, rgba(140, 255, 180, 0.10), transparent 60%),
        #000000;
    z-index: -1;
}
.container {
    width: 100%;
    margin: 0 auto;
}

/* 导航 */
nav {
    width: 100%;
    background: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
    padding: 16px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}
nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 36px;
}
nav .logo-area {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    cursor: pointer;
}
nav .logo-text {
    font-family: 'LogoFont', sans-serif;
    font-size: 22px;
    font-weight: 600;
    color: var(--text-color-heading);
}
nav .nav-links {
    display: flex;
    align-items: center;
    gap: 0;
}
nav .nav-links a {
    color: var(--text-color-secondary);
    text-decoration: none;
    margin-left: 24px;
    font-size: 14px;
    transition: color .2s;
}
nav .nav-links a:hover { color: var(--text-color-heading); }

.btn {
    display: inline-block;
    padding: 8px 20px;
    border-radius: 6px;
    border: none;
    cursor: pointer;
    font-size: 14px;
    text-decoration: none;
    transition: all .2s;
}
.btn-primary {
    background: var(--btn-primary-bg);
    color: var(--btn-primary-text);
}
.btn-primary:hover { background: var(--btn-primary-hover); }
.btn-outline {
    background: transparent;
    border: 1px solid var(--btn-outline-border);
    color: var(--btn-outline-text);
}
.btn-outline:hover { border-color: var(--btn-outline-hover-border); color: var(--text-color-heading); }

/* 页面区域 */
.page {
    display: none;
}
.page.active {
    display: block;
}

/* 首页 Hero */
.hero {
    text-align: center;
    padding: 80px 0 60px;
}
.hero h1 {
    font-family: 'LogoFont', sans-serif;
    font-size: 36px;
    color: var(--text-color-heading);
    margin-bottom: 16px;
    font-weight: 700;
}
.hero p {
    font-size: 16px;
    color: var(--text-color-secondary);
    max-width: 600px;
    margin: 0 auto 32px;
}
.hero .actions { display: flex; gap: 12px; justify-content: center; }

/* 功能卡片 */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    padding: 40px 36px;
}
.feature-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: var(--surface-color);
    border-radius: 12px;
    padding: 28px 24px;
    border: 1px solid var(--border-color);
    transition: border-color 0.2s;
}
.feature-card:hover {
    border-color: var(--border-color-strong);
}
.feature-card h3 {
    font-size: 18px;
    margin-bottom: 8px;
    color: var(--text-color-heading);
}
.feature-card p { font-size: 14px; color: var(--text-color-muted); }

/* 说明区 */
.info-section {
    padding: 40px 36px;
    text-align: center;
}
.info-section h2 {
    font-size: 24px;
    margin-bottom: 12px;
    color: var(--text-color-heading);
}
.info-section p { color: var(--text-color-muted); font-size: 14px; margin-bottom: 24px; }
.info-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}
.step {
background: var(--surface-color);
    border-radius: 12px;
    padding: 28px 24px;
    border: 1px solid var(--border-color);
    transition: border-color 0.2s;
}
.step .num {
    display: inline-block;
    width: 32px;
    height: 32px;
    line-height: 32px;
    border-radius: 50%;
    background: var(--step-num-bg);
    color: var(--step-num-text);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 12px;
}
.step h4 { font-size: 15px; margin-bottom: 6px; color: var(--text-color); }
.step p { font-size: 13px; color: var(--text-color-muted); }

/* 表单 */
.form-page {
    height: calc(100vh - 120px);
    padding: 60px 0;
    display: flex;
    justify-content: center;
}
.form-box {
    background: var(--surface-color);
    border-radius: 12px;
    padding: 40px;
    width: 100%;
    max-width: 420px;
    border: 1px solid var(--border-color);
}
.form-box h2 {
    font-size: 22px;
    margin-bottom: 24px;
    color: var(--text-color-heading);
    text-align: center;
}
.form-group { margin-bottom: 16px; }
.form-group label {
    display: block;
    font-size: 13px;
    color: var(--text-color-secondary);
    margin-bottom: 6px;
}
.form-group input {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--input-border);
    border-radius: 8px;
    font-size: 14px;
    outline: none;
    transition: border-color .2s;
    background: var(--input-bg);
    color: var(--input-text);
}
.form-group input:focus { border-color: var(--input-focus-border); }
.form-actions { margin-top: 24px; }
.form-actions .btn { width: 100%; padding: 12px; font-size: 15px; }
.form-footer {
    text-align: center;
    margin-top: 16px;
    font-size: 13px;
    color: var(--text-color-muted);
}
.form-footer a { color: var(--link-color); text-decoration: none; }
.code-row { display: flex; gap: 8px; }
.code-row input { flex: 1; }
.code-row .btn { white-space: nowrap; padding: 10px 16px; }
.msg {
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 13px;
    margin-bottom: 16px;
    display: none;
}
.msg.error { background: var(--msg-error-bg); color: var(--msg-error-text); border: 1px solid var(--msg-error-border); display: block; }
.msg.success { background: var(--msg-success-bg); color: var(--msg-success-text); border: 1px solid var(--msg-success-border); display: block; }

/* 控制台 */
.dashboard {
    height: calc(100vh - 120px);
    padding: 40px 36px;
}
.dashboard h2 {
    font-size: 22px;
    margin-bottom: 24px;
    color: var(--text-color-heading);
}
.dashboard h3 {
    color: var(--text-color-muted);
}
.dash-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}
.dash-card {
    background: var(--surface-color);
    border-radius: 12px;
    padding: 24px;
    border: 1px solid var(--border-color);
}
.dash-card h3 {
    font-size: 15px;
    color: var(--text-color-muted);
    margin-bottom: 12px;
    font-weight: 500;
}
.dash-card .value {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-color-heading);
}
.dash-card .sub { font-size: 13px; color: var(--text-color-muted); margin-top: 4px; }
.dash-card .price { font-size: 13px; color: var(--primary-color); margin-top: 8px; }
.dash-card .price a { color: var(--link-color); text-decoration: underline; }
.status-active { color: var(--success-color); }
.status-expired { color: var(--error-color); }
.key-display {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 8px;
}
.key-display code {
    background: var(--bg-color-tertiary);
    padding: 8px 14px;
    border-radius: 6px;
    font-size: 14px;
    flex: 1;
    word-break: break-all;
    color: var(--text-color);
}
.log-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}
.log-table th, .log-table td {
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-color);
}
.log-table th { color: var(--text-color-muted); font-weight: 500; }

/* MCP 说明 */
.mcp-guide {padding: 40px 36px;}
.mcp-guide h2 { font-size: 22px; margin-bottom: 16px; color: var(--text-color-heading); }
.mcp-guide h3 { font-size: 16px; margin: 24px 0 8px; color: var(--text-color); }
.mcp-guide p { font-size: 14px; color: var(--text-color-secondary); margin-bottom: 8px; }
.code-block {
    background: var(--code-bg);
    color: var(--code-text);
    padding: 16px 20px;
    border-radius: 8px;
    font-family: "SF Mono", Monaco, monospace;
    font-size: 13px;
    overflow-x: auto;
    margin: 12px 0 20px;
    position: relative;
    border: 1px solid var(--border-color);
}
.code-block .copy-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    background: rgba(255,255,255,.1);
    border: none;
    color: #ccc;
    padding: 4px 10px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
}
.code-block .copy-btn:hover { background: rgba(255,255,255,.2); }

.faq-item { margin-bottom: 16px; }
.faq-item h4 { font-size: 14px; color: var(--text-color); margin-bottom: 4px; }
.faq-item p { font-size: 13px; color: var(--text-color-muted); }

.contact-link {
    display: inline-block;
    padding: 8px 20px;
    background: var(--btn-primary-bg);
    color: var(--btn-primary-text);
    text-decoration: none;
    border-radius: 6px;
    font-size: 14px;
    margin-top: 8px;
    transition: background .2s;
}
.contact-link:hover { background: var(--btn-primary-hover); }


footer {
    /*position: fixed;*/
    text-align: center;
    color: var(--footer-text);
    bottom: 0;
    width: 100%;
    height: 40px;
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    justify-content: center;
}