/* ==========================================================================
   StreamPlay 流影 - 样式表
   说明：全站零外部 CDN 依赖，样式全部本地化
   ========================================================================== */

:root {
    --primary: #0e90d2;
    --primary-dark: #0b76ae;
    --primary-light: #e8f5fc;
    --text: #222222;
    --text-muted: #6b7280;
    --border: #dfe3e8;
    --bg: #ffffff;
    --bg-soft: #f7f9fb;
    --radius: 10px;
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
    width: 100%;
    min-height: 100%;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
    font-size: 15px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--primary);
}

/* ---------------------------------------------------------------- 顶部导航 */
.hd {
    width: 100%;
    background-color: var(--primary);
}

.hd .link-list {
    padding: 0 16px;
    height: 56px;
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 24px;
}

.hd .brand {
    display: flex;
    align-items: center;
    gap: 9px;
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    text-decoration: none;
    letter-spacing: 0.3px;
    white-space: nowrap;
}

.hd .brand img {
    width: 26px;
    height: 26px;
    display: block;
    border-radius: 5px;
    background: #fff;
    object-fit: contain;
}

.hd nav {
    display: flex;
    gap: 22px;
    margin-left: auto;
}

.hd nav a {
    font-size: 15px;
    color: #fff;
    text-decoration: none;
    cursor: pointer;
    opacity: 0.92;
    transition: opacity 0.15s ease;
}

.hd nav a:hover,
.hd nav a[aria-current="page"] {
    opacity: 1;
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 4px;
}

/* ---------------------------------------------------------------- 主体布局 */
.main {
    padding: 24px 16px 48px;
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
}

.main h1 {
    text-align: center;
    font-size: 30px;
    color: var(--primary);
    font-weight: 800;
    margin: 8px 0 6px;
    letter-spacing: 0.5px;
}

.main .subtitle {
    text-align: center;
    color: var(--text-muted);
    font-size: 14px;
    margin: 0 0 24px;
}

/* ---------------------------------------------------------------- 地址输入 */
.main .form {
    width: 100%;
    display: flex;
    flex-direction: row;
    margin-bottom: 8px;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(14, 144, 210, 0.12);
}

.main .form input {
    flex: 1;
    min-width: 0;
    height: 44px;
    font-size: 15px;
    color: var(--text);
    border: 1px solid var(--primary);
    border-right: 0;
    padding: 0 12px;
    border-radius: var(--radius) 0 0 var(--radius);
    background: #fff;
}

.main .form input:focus {
    outline: 2px solid var(--primary-light);
    outline-offset: -1px;
}

.main .form button {
    width: 96px;
    height: 44px;
    border: 0;
    padding: 0;
    background: var(--primary);
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    border-radius: 0 var(--radius) var(--radius) 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    transition: background 0.15s ease;
}

.main .form button:hover {
    background: var(--primary-dark);
}

.main .form button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.main .form button img {
    width: 20px;
    height: 20px;
    display: block;
}

/* 移动端：按钮收窄为图标 */
@media screen and (max-width: 640px) {
    .main .form button {
        width: 52px;
    }

    .main .form button span {
        display: none;
    }
}

/* ---------------------------------------------------------------- 提示条 */
.tip {
    display: none;
    font-size: 13px;
    line-height: 1.6;
    padding: 8px 12px;
    border-radius: 8px;
    margin-bottom: 16px;
    word-break: break-all;
}

.tip.is-visible {
    display: block;
}

.tip.is-info {
    background: var(--primary-light);
    color: var(--primary-dark);
}

.tip.is-warn {
    background: #fff7e6;
    color: #a15c00;
}

.tip.is-error {
    background: #fdecec;
    color: #b3261e;
}

/* ---------------------------------------------------------------- 播放器 */
.player-wrap {
    width: 100%;
    background: #000;
    border-radius: var(--radius);
    overflow: hidden;
    margin-bottom: 24px;
    aspect-ratio: 16 / 9;
    min-height: 200px;
}

.player-wrap video {
    width: 100%;
    height: 100%;
    display: block;
    background: #000;
}

/* ---------------------------------------------------------------- 内容区 */
.card {
    background: var(--bg-soft);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px 18px;
    margin-bottom: 24px;
}

.card>p:first-child {
    margin-top: 0;
}

.card>p:last-child {
    margin-bottom: 0;
}

.card pre {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 10px 12px;
    margin: 8px 0 0;
    overflow-x: auto;
    font-size: 13px;
    font-family: Consolas, Monaco, "Courier New", monospace;
    color: #374151;
}

.card h2 {
    font-size: 16px;
    font-weight: 700;
    margin: 18px 0 6px;
    color: var(--text);
}

.card p {
    font-size: 15px;
    color: #374151;
}

/* ---------------------------------------------------------------- 播放引导 */
.hint {
    font-size: 14px;
    color: var(--text-muted);
    margin: 0 0 14px;
    line-height: 1.7;
}

.hint strong {
    color: var(--primary-dark);
}

.demo-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
}

.demo-label {
    font-size: 13px;
    color: var(--text-muted);
}

.demo-btn {
    font-family: inherit;
    font-size: 13px;
    line-height: 1;
    padding: 7px 11px;
    border: 1px solid var(--primary);
    border-radius: 999px;
    background: #fff;
    color: var(--primary);
    cursor: pointer;
    transition: background 0.15s ease, color 0.15s ease;
}

.demo-btn:hover {
    background: var(--primary);
    color: #fff;
}

/* ---------------------------------------------------------------- 使用说明 */
.steps {
    margin: 8px 0 12px;
    padding-left: 22px;
    color: #374151;
}

.steps li {
    margin-bottom: 8px;
    font-size: 15px;
    line-height: 1.7;
}

.steps strong {
    color: var(--text);
}

.card kbd {
    display: inline-block;
    padding: 1px 6px;
    font-family: Consolas, Monaco, "Courier New", monospace;
    font-size: 12px;
    color: #374151;
    background: #fff;
    border: 1px solid var(--border);
    border-bottom-width: 2px;
    border-radius: 4px;
}

.card .note {
    font-size: 13px;
    color: var(--text-muted);
    background: #fff;
    border-left: 3px solid var(--primary);
    padding: 8px 12px;
    border-radius: 0 6px 6px 0;
    margin-bottom: 0;
}

.tag {
    display: inline-block;
    margin-left: 8px;
    padding: 2px 8px;
    font-size: 12px;
    font-weight: 500;
    color: #fff;
    background: var(--text-muted);
    border-radius: 999px;
    vertical-align: middle;
}

.dev-card {
    background: #fff;
    border-style: dashed;
}

/* ---------------------------------------------------------------- 页脚 */
.footer {
    border-top: 1px solid var(--border);
    padding-top: 16px;
    color: var(--text-muted);
    font-size: 13px;
}

.footer p {
    margin: 0 0 6px;
}

.footer .links a {
    color: var(--primary);
    text-decoration: none;
}

.footer .links a:hover {
    text-decoration: underline;
}

/* ---------------------------------------------------------------- 关于页 */
.about h1 {
    font-size: 26px;
    margin-bottom: 18px;
}

.about h2 {
    font-size: 17px;
    font-weight: 700;
    margin: 26px 0 8px;
    padding-left: 10px;
    border-left: 3px solid var(--primary);
}

.about ul {
    padding-left: 20px;
    color: #374151;
}

.about li {
    margin-bottom: 6px;
}

.about table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
    margin: 10px 0;
}

.about th,
.about td {
    border: 1px solid var(--border);
    padding: 8px 10px;
    text-align: left;
    vertical-align: top;
}

.about th {
    background: var(--primary-light);
    color: var(--primary-dark);
    font-weight: 600;
    width: 34%;
}