/* ==========================================================================
   寻天XT 统一视觉规范（Design Tokens + 基础主题）
   主色取自公司 Logo：XT.png（#7C0D85）
   ========================================================================== */

:root {
    /* 品牌主色（紫） */
    --xt-primary: #7c0d85;
    --xt-primary-600: #67076f;
    --xt-primary-700: #51045a;
    --xt-primary-050: #f8ebf9;
    --xt-accent: #c026d3;
    --xt-accent-soft: #f0b3f5;

    /* 语义色 */
    --xt-success: #12a150;
    --xt-warning: #e08a00;
    --xt-danger: #d93f45;
    --xt-info: #0d8296;

    /* 中性色 */
    --xt-ink: #1e1224;
    --xt-ink-2: #463a4d;
    --xt-muted: #76697d;
    --xt-line: #ede4f0;
    --xt-surface: #ffffff;
    --xt-bg: #faf8fc;
    --xt-bg-deep: #1a0b1f;

    /* 渐变 */
    --xt-gradient-hero: linear-gradient(135deg, #22052a 0%, #5c0a63 52%, #a21caf 100%);
    --xt-gradient-brand: linear-gradient(135deg, #7c0d85 0%, #51045a 100%);
    --xt-gradient-accent: linear-gradient(90deg, #7c0d85 0%, #c026d3 100%);

    /* 圆角 / 阴影 / 尺寸 */
    --xt-radius-sm: 8px;
    --xt-radius: 14px;
    --xt-radius-lg: 20px;
    --xt-shadow-sm: 0 2px 8px rgba(30, 18, 36, 0.06);
    --xt-shadow: 0 10px 30px rgba(30, 18, 36, 0.08);
    --xt-shadow-lg: 0 24px 60px rgba(30, 18, 36, 0.14);
    --xt-nav-h: 72px;
    --xt-font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

/* --------------------------------------------------------------------------
   基础排版
   -------------------------------------------------------------------------- */
html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--xt-font-sans);
    color: var(--xt-ink);
    background-color: var(--xt-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--xt-ink);
    font-weight: 700;
    letter-spacing: -0.01em;
}

p {
    color: var(--xt-ink-2);
}

.lead {
    color: var(--xt-ink-2);
}

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

a:hover {
    color: var(--xt-primary-600);
}

::selection {
    background: rgba(192, 38, 211, 0.22);
}

/* --------------------------------------------------------------------------
   Bootstrap 主题映射：让内置工具类跟随品牌色板
   -------------------------------------------------------------------------- */
.text-primary {
    color: var(--xt-primary) !important;
}

.bg-primary {
    background-color: var(--xt-primary) !important;
    color: #fff;
}

.bg-primary a {
    color: #fff;
}

.badge.bg-primary {
    background-color: var(--xt-primary) !important;
}

/* 徽章统一白字（黄/浅底除外，保持深色字） */
.badge {
    color: #fff;
}

.badge.bg-warning,
.badge.bg-light {
    color: var(--xt-ink);
}

/* 紫色渐变卡片头部：标题与正文统一白色（覆盖全局深色文字） */
.case-header,
.job-header,
.feedback-header {
    color: #fff;
}

.case-header h1, .case-header h2, .case-header h3,
.case-header h4, .case-header h5, .case-header h6,
.job-header h1, .job-header h2, .job-header h3,
.job-header h4, .job-header h5, .job-header h6,
.feedback-header h1, .feedback-header h2, .feedback-header h3,
.feedback-header h4, .feedback-header h5, .feedback-header h6 {
    color: #fff;
}

.case-header p,
.job-header p,
.feedback-header p,
.case-header .case-tag,
.job-header .job-type {
    color: rgba(255, 255, 255, 0.85);
}

.btn-primary {
    --bs-btn-color: #fff;
    --bs-btn-bg: var(--xt-primary);
    --bs-btn-border-color: var(--xt-primary);
    --bs-btn-hover-color: #fff;
    --bs-btn-hover-bg: var(--xt-primary-600);
    --bs-btn-hover-border-color: var(--xt-primary-600);
    --bs-btn-active-color: #fff;
    --bs-btn-active-bg: var(--xt-primary-700);
    --bs-btn-active-border-color: var(--xt-primary-700);
    --bs-btn-disabled-bg: var(--xt-primary);
    --bs-btn-disabled-border-color: var(--xt-primary);
}

.btn {
    border-radius: 10px;
    font-weight: 600;
    padding: 0.55rem 1.15rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

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

.btn-lg {
    padding: 0.75rem 1.6rem;
    border-radius: 12px;
}

/* --------------------------------------------------------------------------
   卡片
   -------------------------------------------------------------------------- */
.card {
    border: 1px solid var(--xt-line);
    border-radius: var(--xt-radius);
    background-color: var(--xt-surface);
    box-shadow: var(--xt-shadow-sm);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.card-header {
    border-bottom: 1px solid var(--xt-line);
    background-color: var(--xt-surface);
    font-weight: 600;
}

.feature-card {
    border: 1px solid var(--xt-line);
    border-radius: var(--xt-radius);
    box-shadow: var(--xt-shadow-sm);
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--xt-shadow);
}

/* 快速链接卡片：按钮统一贴底对齐 */
.quick-link .card-body {
    display: flex;
    flex-direction: column;
    align-items: center;
    height: 100%;
}

.quick-link .card-body > .btn {
    margin-top: auto;
}

/* --------------------------------------------------------------------------
   区块标题
   -------------------------------------------------------------------------- */
.section-title {
    position: relative;
    font-size: clamp(1.5rem, 1.15rem + 1.1vw, 2rem);
    color: var(--xt-ink);
    margin-bottom: 2rem;
    padding-bottom: 0.75rem;
    border-bottom: 0;
}

.section-title::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 64px;
    height: 4px;
    border-radius: 4px;
    background: var(--xt-gradient-accent);
}

.section-title.text-center::after {
    left: 50%;
    transform: translateX(-50%);
}

/* --------------------------------------------------------------------------
   首页 Hero
   -------------------------------------------------------------------------- */
.hero-section {
    position: relative;
    overflow: hidden;
    background: var(--xt-gradient-hero);
    color: #fff;
    padding: clamp(4rem, 8vw, 7rem) 0;
    margin-bottom: 3rem;
}

.hero-section::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(circle at 50% 0%, #000 0%, transparent 78%);
    -webkit-mask-image: radial-gradient(circle at 50% 0%, #000 0%, transparent 78%);
    pointer-events: none;
}

.hero-section::after {
    content: "";
    position: absolute;
    right: -10%;
    bottom: -55%;
    width: 60vw;
    height: 60vw;
    max-width: 720px;
    max-height: 720px;
    background: radial-gradient(closest-side, rgba(192, 38, 211, 0.38), transparent 72%);
    pointer-events: none;
}

.hero-section .container {
    position: relative;
    z-index: 1;
}

.hero-section .display-4 {
    color: #fff;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.hero-section p,
.hero-section .lead {
    color: rgba(255, 255, 255, 0.85);
}

.hero-section strong {
    color: #fff;
}

/* --------------------------------------------------------------------------
   导航栏
   -------------------------------------------------------------------------- */
.xt-navbar {
    position: sticky;
    top: 0;
    z-index: 1030;
    min-height: var(--xt-nav-h);
    padding: 0.55rem 0;
    background: rgba(255, 255, 255, 0.82);
    backdrop-filter: blur(14px) saturate(160%);
    -webkit-backdrop-filter: blur(14px) saturate(160%);
    border-bottom: 1px solid rgba(30, 18, 36, 0.08);
}

.xt-navbar .navbar-brand {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--xt-ink);
    letter-spacing: 0.01em;
}

.xt-navbar .xt-logo {
    width: 34px;
    height: 34px;
    object-fit: contain;
}

.xt-navbar .nav-link {
    color: var(--xt-ink-2);
    font-weight: 600;
    padding: 0.55rem 0.9rem;
    border-radius: 10px;
    transition: color 0.2s ease, background-color 0.2s ease;
}

.xt-navbar .nav-link:hover,
.xt-navbar .nav-link.active {
    color: var(--xt-primary);
    background-color: var(--xt-primary-050);
}

.xt-navbar .dropdown-menu {
    margin-top: 0.5rem;
    padding: 0.5rem;
    border: 1px solid var(--xt-line);
    border-radius: 12px;
    box-shadow: var(--xt-shadow);
}

.xt-navbar .dropdown-item {
    padding: 0.5rem 0.75rem;
    border-radius: 8px;
    font-size: 0.95rem;
    color: var(--xt-ink-2);
}

.xt-navbar .dropdown-item:hover,
.xt-navbar .dropdown-item:focus {
    background-color: var(--xt-primary-050);
    color: var(--xt-primary);
}

/* --------------------------------------------------------------------------
   页脚
   -------------------------------------------------------------------------- */
.xt-footer {
    margin-top: 5rem;
    padding: 3.5rem 0 1.75rem;
    background: var(--xt-bg-deep);
    color: rgba(255, 255, 255, 0.72);
}

.xt-footer h5 {
    margin-bottom: 1.1rem;
    font-size: 1.05rem;
    color: #fff;
    letter-spacing: 0.02em;
}

.xt-footer p {
    color: rgba(255, 255, 255, 0.66);
}

.xt-footer a {
    color: rgba(255, 255, 255, 0.72);
    text-decoration: none;
    transition: color 0.2s ease;
}

.xt-footer a:hover {
    color: var(--xt-accent-soft);
}

.xt-footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    margin-bottom: 0;
}

.xt-footer-links li {
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
    font-size: 0.95rem;
}

.xt-footer-links i {
    margin-top: 0.2rem;
    color: var(--xt-accent);
}

.xt-footer-divider {
    margin: 2.25rem 0 1.25rem;
    border-color: rgba(255, 255, 255, 0.12);
    opacity: 1;
}

.xt-footer-bottom {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.55);
}

/* --------------------------------------------------------------------------
   表单与折叠面板
   -------------------------------------------------------------------------- */
.form-label {
    font-weight: 600;
    color: var(--xt-ink-2);
}

.form-control,
.form-select {
    padding: 0.6rem 0.85rem;
    border-color: var(--xt-line);
    border-radius: 10px;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--xt-primary);
    box-shadow: 0 0 0 0.2rem rgba(124, 13, 133, 0.15);
}

.accordion-item {
    border-color: var(--xt-line);
    border-radius: var(--xt-radius-sm);
    overflow: hidden;
}

.accordion-button:not(.collapsed) {
    color: var(--xt-primary);
    background-color: var(--xt-primary-050);
}

.accordion-button:focus {
    box-shadow: 0 0 0 0.2rem rgba(124, 13, 133, 0.15);
}

/* --------------------------------------------------------------------------
   响应式微调
   -------------------------------------------------------------------------- */
@media (max-width: 991.98px) {
    .xt-navbar .navbar-brand {
        font-size: 1rem;
    }

    .xt-navbar .navbar-nav {
        padding-top: 0.5rem;
    }

    .xt-navbar .nav-link {
        padding: 0.6rem 0.5rem;
    }
}

/* ==========================================================================
   视觉升级层（Visual Polish）
   ========================================================================== */

/* 页面氛围：顶部与两侧紫色光斑 + 自定义滚动条 */
body {
    background-image:
        radial-gradient(620px 320px at 8% -4%, rgba(124, 13, 133, 0.07), transparent 62%),
        radial-gradient(760px 380px at 96% 12%, rgba(192, 38, 211, 0.06), transparent 60%);
    background-repeat: no-repeat;
}

::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--xt-bg);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(var(--xt-primary), var(--xt-primary-700));
    border-radius: 8px;
    border: 2px solid var(--xt-bg);
}

::selection {
    background: rgba(124, 13, 133, 0.18);
}

/* 内页统一页头 */
.page-hero {
    position: relative;
    overflow: hidden;
    margin-top: 2.5rem;
    margin-bottom: 2.5rem;
    padding: clamp(2.2rem, 5vw, 3.4rem) clamp(1.25rem, 4vw, 3rem);
    border-radius: var(--xt-radius-lg);
    background:
        radial-gradient(480px 200px at 88% -30%, rgba(192, 38, 211, 0.22), transparent 65%),
        linear-gradient(135deg, #f4e7f6 0%, #faf3fb 55%, #f7edfa 100%);
    border: 1px solid rgba(124, 13, 133, 0.12);
    box-shadow: var(--xt-shadow-sm);
}

.page-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(124, 13, 133, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(124, 13, 133, 0.05) 1px, transparent 1px);
    background-size: 36px 36px;
    mask-image: linear-gradient(to bottom right, #000 0%, transparent 72%);
    -webkit-mask-image: linear-gradient(to bottom right, #000 0%, transparent 72%);
    pointer-events: none;
}

.page-hero h1 {
    position: relative;
    margin-bottom: 0;
    font-size: clamp(1.6rem, 1.2rem + 1.4vw, 2.2rem);
    font-weight: 800;
    color: var(--xt-primary-700);
    letter-spacing: -0.01em;
}

.page-hero p {
    position: relative;
    margin-top: 0.6rem;
    margin-bottom: 0;
    color: var(--xt-ink-2);
}

/* 眉题小标签 */
.section-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.3rem 0.9rem;
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    color: var(--xt-primary);
    background: rgba(255, 255, 255, 0.14);
    border: 1px solid rgba(255, 255, 255, 0.35);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    margin-bottom: 1.1rem;
}

.section-eyebrow::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--xt-accent-soft);
    box-shadow: 0 0 8px rgba(240, 179, 245, 0.9);
}

/* 图标容器：渐变紫底白字圆角方块 */
.icon-box {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    border-radius: 14px;
    color: #fff;
    font-size: 1.25rem;
    background: var(--xt-gradient-brand);
    box-shadow: 0 8px 20px rgba(124, 13, 133, 0.28);
}

.icon-box-lg {
    width: 64px;
    height: 64px;
    border-radius: 18px;
    font-size: 1.6rem;
}

.icon-box-soft {
    color: var(--xt-primary);
    background: var(--xt-primary-050);
    box-shadow: none;
}

/* 渐变主按钮 */
.btn-gradient {
    color: #fff;
    border: 0;
    background: var(--xt-gradient-accent);
    box-shadow: 0 8px 22px rgba(124, 13, 133, 0.32);
}

.btn-gradient:hover,
.btn-gradient:focus {
    color: #fff;
    filter: brightness(1.08);
    box-shadow: 0 12px 28px rgba(124, 13, 133, 0.4);
}

/* 特性卡片：顶部渐变细线，hover 显现并上浮 */
.feature-card {
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--xt-gradient-accent);
    opacity: 0;
    transition: opacity 0.25s ease;
}

.feature-card:hover::before {
    opacity: 1;
}

/* 统计数字 */
.stat-value {
    font-size: clamp(1.6rem, 1.3rem + 1vw, 2.2rem);
    font-weight: 800;
    color: var(--xt-primary);
    line-height: 1.1;
}

.stat-label {
    color: var(--xt-muted);
    font-size: 0.9rem;
}

/* 表格美化 */
.table > thead th {
    color: var(--xt-primary-700);
    background: var(--xt-primary-050);
    border-bottom: 1px solid rgba(124, 13, 133, 0.15);
    font-weight: 700;
    white-space: nowrap;
}

.table > :not(caption) > * > * {
    padding: 0.7rem 0.9rem;
}

.table-hover > tbody > tr:hover > * {
    --bs-table-accent-bg: rgba(124, 13, 133, 0.04);
}

/* 面包屑（可选使用） */
.xt-breadcrumb {
    font-size: 0.9rem;
    color: var(--xt-muted);
    margin-bottom: 0.35rem;
}

.xt-breadcrumb a {
    color: var(--xt-muted);
    text-decoration: none;
}

.xt-breadcrumb a:hover {
    color: var(--xt-primary);
}