/* ==========================================================================
   快连 LetsVPN 官方网站 - 扁平化呈现 & 紫外光色色彩 & 破格越界版式 & 全球节点地图视觉
   版本：快连49_final
   ========================================================================== */

:root {
    /* 紫外光色色彩体系 (Ultra Violet & Deep Obsidian Palette) */
    --c-uv-bg: #0A0612;              /* 极夜曜黑紫底 */
    --c-uv-surface: #140C24;         /* 紫外承载面 */
    --c-uv-card: rgba(22, 14, 39, 0.92); /* 扁平半透明紫外卡片 */
    --c-uv-card-hover: rgba(32, 20, 56, 0.98);
    --c-uv-elevated: #1F1338;        /* 高位色块 */

    /* 紫外光主色与霓虹强调色 (Pantone Ultra Violet Inspired) */
    --c-uv-primary: #9D4EDD;         /* 紫外核心色 */
    --c-uv-neon: #C77DFF;            /* 紫外荧光浅紫 */
    --c-uv-light: #E0AAFF;           /* 紫外淡雾粉紫 */
    --c-uv-deep: #5A189A;            /* 深紫外暗紫 */
    --c-uv-pulse: #7B2CBF;           /* 脉冲深紫 */

    /* 破格互补高亮色 (Electric Cyan & Neon Gold Accent) */
    --c-accent-cyan: #00F5D4;        /* 节点光流青 */
    --c-accent-gold: #FFD166;        /* 关键节点金 */
    --c-accent-pink: #FF477E;        /* 警报或对比红 */

    /* 文字色彩 */
    --c-text-primary: #F7F4FB;       /* 高清明亮白 */
    --c-text-secondary: #D4C9E8;     /* 浅紫灰副文 */
    --c-text-muted: #9E8EB8;         /* 柔和暗紫灰 */

    /* 扁平化微阴影与紫外光晕 */
    --shadow-flat-border: 1.5px solid rgba(157, 78, 221, 0.35);
    --shadow-flat-hover: 1.5px solid var(--c-uv-neon);
    --shadow-uv-glow: 0 12px 30px rgba(157, 78, 221, 0.25);
    --shadow-breakout: -12px 20px 40px rgba(0, 0, 0, 0.65), 0 0 25px rgba(157, 78, 221, 0.2);

    /* 几何圆角与间距 */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-pill: 9999px;
    --container-max: 1200px;
    --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

/* 全局重置 */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-base);
    background-color: var(--c-uv-bg);
    color: var(--c-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
}

/* 紫外全球经纬网底纹 */
.uv-grid-bg {
    position: relative;
    background-color: var(--c-uv-bg);
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(157, 78, 221, 0.16) 0%, transparent 45%),
        radial-gradient(circle at 90% 40%, rgba(0, 245, 212, 0.12) 0%, transparent 50%),
        radial-gradient(circle at 50% 80%, rgba(90, 24, 154, 0.25) 0%, transparent 60%),
        linear-gradient(to right, rgba(157, 78, 221, 0.04) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(157, 78, 221, 0.04) 1px, transparent 1px);
    background-size: 100% 100%, 100% 100%, 100% 100%, 40px 40px, 40px 40px;
    background-attachment: fixed;
}

/* 1. 通栏公告条 */
.top-notice-bar {
    background: linear-gradient(90deg, #160D27 0%, #291547 50%, #160D27 100%);
    border-bottom: 1.5px solid rgba(157, 78, 221, 0.35);
    padding: 8px 16px;
    font-size: 13.5px;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    z-index: 1001;
    color: var(--c-text-primary);
}

.notice-content {
    display: flex;
    align-items: center;
    gap: 10px;
    text-align: center;
}

.notice-tag {
    background: var(--c-uv-neon);
    color: #0A0612;
    font-weight: 850;
    font-size: 11px;
    padding: 2px 8px;
    border-radius: var(--radius-pill);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.notice-close-btn {
    position: absolute;
    right: 18px;
    background: none;
    border: none;
    color: var(--c-text-muted);
    font-size: 18px;
    cursor: pointer;
    line-height: 1;
    padding: 4px;
    transition: color 0.2s ease;
}

.notice-close-btn:hover {
    color: var(--c-uv-neon);
}

/* 2. 粘性顶栏 */
header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(10, 6, 18, 0.92);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1.5px solid rgba(157, 78, 221, 0.28);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 28px;
}

.logo-wrap a {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--c-text-primary);
}

.logo-badge {
    width: 38px;
    height: 38px;
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, #241340, #140C24);
    border: 1.5px solid var(--c-uv-neon);
    box-shadow: 0 0 12px rgba(157, 78, 221, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-text {
    font-size: 20px;
    font-weight: 900;
    letter-spacing: -0.5px;
    color: var(--c-text-primary);
}

.logo-text span {
    color: var(--c-uv-neon);
    font-size: 17px;
    font-weight: 700;
    margin-left: 2px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 22px;
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: var(--c-text-secondary);
    font-size: 14.5px;
    font-weight: 600;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    transition: all 0.25s ease;
}

.nav-link:hover, .nav-link.active {
    color: var(--c-uv-neon);
    background: rgba(157, 78, 221, 0.12);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 14px;
}

.lang-switch {
    font-size: 12.5px;
    font-weight: 700;
    color: var(--c-text-muted);
    border: 1px solid rgba(157, 78, 221, 0.3);
    padding: 4px 10px;
    border-radius: var(--radius-pill);
}

.btn-header-login {
    text-decoration: none;
    font-size: 14px;
    font-weight: 700;
    color: var(--c-text-primary);
    padding: 7px 16px;
    border-radius: var(--radius-pill);
    border: 1.5px solid rgba(157, 78, 221, 0.4);
    transition: all 0.25s ease;
}

.btn-header-login:hover {
    color: #0A0612;
    background: var(--c-uv-neon);
    box-shadow: 0 0 16px rgba(199, 125, 255, 0.5);
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 11px 24px;
    font-size: 15px;
    font-weight: 850;
    color: #0A0612;
    text-decoration: none;
    border-radius: var(--radius-pill);
    background: linear-gradient(135deg, var(--c-uv-neon) 0%, #9D4EDD 50%, var(--c-accent-cyan) 100%);
    border: 1.5px solid #FFFFFF;
    box-shadow: 0 4px 20px rgba(157, 78, 221, 0.5);
    cursor: pointer;
    transition: all 0.25s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(199, 125, 255, 0.65);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 22px;
    font-size: 15px;
    font-weight: 700;
    color: var(--c-text-primary);
    text-decoration: none;
    border-radius: var(--radius-pill);
    background: rgba(31, 19, 56, 0.85);
    border: 1.5px solid rgba(157, 78, 221, 0.45);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    cursor: pointer;
    transition: all 0.25s ease;
}

.btn-secondary:hover {
    background: rgba(45, 28, 80, 0.95);
    border-color: var(--c-uv-neon);
    color: var(--c-uv-neon);
    transform: translateY(-2px);
}

.hamburger-btn {
    display: none;
    background: none;
    border: 1.5px solid var(--c-uv-neon);
    color: var(--c-uv-neon);
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-size: 18px;
    cursor: pointer;
}

/* 核心容器与板块 */
.section-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
}

.section-full {
    padding: 85px 0;
    position: relative;
    border-bottom: 1.5px solid rgba(157, 78, 221, 0.16);
}

/* 破格越界版式修饰 (Broken Grid Overlap Utilities) */
.breakout-overlap-right {
    margin-right: -40px;
    position: relative;
    z-index: 5;
}

.breakout-overlap-left {
    margin-left: -30px;
    position: relative;
    z-index: 5;
}

.breakout-tag-anchor {
    position: absolute;
    top: -16px;
    left: 24px;
    z-index: 10;
}

.uv-capsule {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 16px;
    font-size: 12.5px;
    font-weight: 800;
    letter-spacing: 0.8px;
    color: #0A0612;
    background: linear-gradient(135deg, var(--c-uv-neon), var(--c-accent-cyan));
    border-radius: var(--radius-pill);
    box-shadow: 0 0 15px rgba(157, 78, 221, 0.4);
    margin-bottom: 18px;
    text-transform: uppercase;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
    position: relative;
}

.section-title {
    font-size: 34px;
    font-weight: 900;
    letter-spacing: -0.5px;
    margin-bottom: 14px;
    color: var(--c-text-primary);
    line-height: 1.25;
}

.section-desc {
    font-size: 16px;
    color: var(--c-text-secondary);
    max-width: 680px;
    margin: 0 auto;
    line-height: 1.7;
}

/* ==========================================================================
   板块 3：首屏 HERO（左文右图 + 破格全球节点地图视觉 + 3 张浮卡）
   ========================================================================== */
.hero-section {
    padding: 70px 0 90px;
    min-height: calc(100vh - 120px);
    display: flex;
    align-items: center;
    position: relative;
    overflow: visible;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 40px;
    align-items: center;
}

.hero-left {
    position: relative;
    z-index: 2;
}

.hero-h1 {
    font-size: 46px;
    font-weight: 950;
    line-height: 1.18;
    margin-bottom: 20px;
    letter-spacing: -1px;
    color: #FFFFFF;
}

.gradient-text-uv {
    background: linear-gradient(135deg, #FFFFFF 0%, var(--c-uv-neon) 45%, var(--c-accent-cyan) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
    filter: drop-shadow(0 2px 10px rgba(157, 78, 221, 0.4));
}

.hero-selling-points {
    margin-bottom: 28px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.selling-point-row {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 16px;
    color: var(--c-text-secondary);
    font-weight: 500;
}

.selling-point-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: rgba(157, 78, 221, 0.2);
    border: 1.5px solid var(--c-uv-neon);
    color: var(--c-uv-neon);
    font-size: 12px;
    font-weight: 900;
}

.hero-cta-group {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 30px;
}

.hero-badges-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
}

.hero-badge-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border-radius: var(--radius-pill);
    background: rgba(22, 14, 39, 0.8);
    border: 1.5px solid rgba(157, 78, 221, 0.35);
    font-size: 13px;
    color: var(--c-text-secondary);
    font-weight: 600;
}

/* 首屏右侧：破格越界全球节点地图视觉 */
.hero-right-map-wrap {
    position: relative;
    width: 100%;
    max-width: 520px;
    height: 500px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.node-map-board {
    position: relative;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(26, 16, 46, 0.88), rgba(14, 8, 26, 0.95));
    border: 2px solid var(--c-uv-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-breakout);
    overflow: visible;
    padding: 20px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

/* 扁平矢量全球节点地图 SVG */
.global-map-svg {
    width: 100%;
    height: auto;
    max-height: 380px;
}

/* 破格悬挂的 3 张核心指标浮卡 */
.map-float-card {
    position: absolute;
    background: rgba(18, 11, 32, 0.94);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1.5px solid var(--c-uv-neon);
    border-radius: var(--radius-md);
    padding: 11px 16px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.6), 0 0 18px rgba(157, 78, 221, 0.3);
    z-index: 10;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: all 0.3s ease;
}

.map-float-card:hover {
    transform: translateY(-4px) scale(1.04);
    box-shadow: 0 16px 35px rgba(157, 78, 221, 0.45);
}

.float-pos-top {
    top: -18px;
    left: -20px;
}

.float-pos-bottom {
    bottom: -18px;
    right: -25px;
}

.float-pos-mid {
    top: 55%;
    left: -35px;
}

.float-card-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    background: rgba(157, 78, 221, 0.2);
    border: 1px solid var(--c-uv-neon);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 17px;
}

.float-card-label {
    font-size: 11px;
    color: var(--c-text-muted);
    font-weight: 700;
}

.float-card-val {
    font-size: 15.5px;
    font-weight: 850;
    color: var(--c-accent-cyan);
}

/* ==========================================================================
   板块 4：信任条 (4 个 KPI)
   ========================================================================== */
.trust-kpi-bar {
    background: #110B1F;
    border-top: 1.5px solid rgba(157, 78, 221, 0.25);
    border-bottom: 1.5px solid rgba(157, 78, 221, 0.25);
    padding: 36px 0;
}

.kpi-grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    text-align: center;
}

.kpi-item {
    position: relative;
    padding: 10px 16px;
}

.kpi-item:not(:last-child)::after {
    content: "";
    position: absolute;
    right: 0;
    top: 20%;
    bottom: 20%;
    width: 1px;
    background: linear-gradient(180deg, transparent, rgba(157, 78, 221, 0.4), transparent);
}

.kpi-num {
    font-size: 38px;
    font-weight: 950;
    color: #FFFFFF;
    line-height: 1.1;
    margin-bottom: 6px;
    letter-spacing: -1px;
}

.kpi-num span {
    color: var(--c-uv-neon);
    font-size: 26px;
    margin-left: 2px;
}

.kpi-label {
    font-size: 14px;
    color: var(--c-text-muted);
    font-weight: 600;
}

/* ==========================================================================
   板块 5：功能 (3×2 卡片，扁平高饱和几何边框)
   ========================================================================== */
.features-3x2-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.flat-feature-card {
    background: var(--c-uv-card);
    border: var(--shadow-flat-border);
    border-radius: var(--radius-lg);
    padding: 32px 26px;
    position: relative;
    transition: all 0.3s ease;
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.4);
    display: flex;
    flex-direction: column;
}

.flat-feature-card:hover {
    transform: translateY(-6px);
    border-color: var(--c-uv-neon);
    background: var(--c-uv-card-hover);
    box-shadow: var(--shadow-uv-glow);
}

.flat-feature-icon {
    width: 58px;
    height: 58px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, rgba(157, 78, 221, 0.25), rgba(0, 245, 212, 0.15));
    border: 1.5px solid var(--c-uv-neon);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    margin-bottom: 20px;
    box-shadow: 0 0 16px rgba(157, 78, 221, 0.3);
}

.flat-feature-card h3 {
    font-size: 19px;
    font-weight: 800;
    margin-bottom: 12px;
    color: var(--c-text-primary);
}

.flat-feature-card p {
    font-size: 14px;
    color: var(--c-text-secondary);
    line-height: 1.65;
    flex: 1;
    margin-bottom: 20px;
}

.feature-link-anchor {
    font-size: 14px;
    font-weight: 700;
    color: var(--c-uv-neon);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap 0.2s ease;
}

.feature-link-anchor:hover {
    gap: 10px;
    color: #FFFFFF;
}

/* ==========================================================================
   板块 6：证明 A (2 列：大视觉 2.webp + 核心区域概览列表，破格越界)
   ========================================================================== */
.proof-a-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 44px;
    align-items: center;
}

.proof-visual-col {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 2px solid var(--c-uv-primary);
    box-shadow: var(--shadow-breakout);
}

.proof-visual-col img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.proof-visual-col:hover img {
    transform: scale(1.03);
}

.proof-overview-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.proof-overview-item {
    background: var(--c-uv-card);
    border: 1.5px solid rgba(157, 78, 221, 0.3);
    border-radius: var(--radius-md);
    padding: 18px 22px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.25s ease;
}

.proof-overview-item:hover {
    border-color: var(--c-uv-neon);
    background: rgba(36, 22, 60, 0.95);
    transform: translateX(4px);
}

.region-title {
    font-size: 16px;
    font-weight: 800;
    color: var(--c-text-primary);
    margin-bottom: 4px;
}

.region-sub {
    font-size: 12.5px;
    color: var(--c-text-muted);
}

.region-badge {
    background: rgba(157, 78, 221, 0.2);
    border: 1px solid var(--c-uv-neon);
    color: var(--c-uv-neon);
    padding: 5px 12px;
    border-radius: var(--radius-pill);
    font-size: 12.5px;
    font-weight: 700;
}

/* ==========================================================================
   板块 7：场景 (Tab 4 个身份 + 左痛点/右方案)
   ========================================================================== */
.scene-tabs-bar {
    display: flex;
    justify-content: center;
    gap: 14px;
    margin-bottom: 36px;
    flex-wrap: wrap;
}

.scene-tab-btn {
    background: rgba(22, 14, 39, 0.7);
    border: 1.5px solid rgba(157, 78, 221, 0.35);
    color: var(--c-text-secondary);
    padding: 10px 22px;
    border-radius: var(--radius-pill);
    font-size: 14.5px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.25s ease;
}

.scene-tab-btn.active, .scene-tab-btn:hover {
    background: var(--c-uv-neon);
    color: #0A0612;
    border-color: #FFFFFF;
    box-shadow: 0 0 18px rgba(199, 125, 255, 0.5);
}

.scene-split-box {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    background: var(--c-uv-card);
    border: 2px solid rgba(157, 78, 221, 0.35);
    border-radius: var(--radius-lg);
    padding: 38px 42px;
    box-shadow: var(--shadow-breakout);
}

.scene-pain-col {
    border-right: 1.5px solid rgba(157, 78, 221, 0.2);
    padding-right: 32px;
}

.scene-sol-col {
    padding-left: 8px;
}

.scene-tag-label {
    display: inline-block;
    padding: 4px 12px;
    font-size: 12px;
    font-weight: 800;
    border-radius: var(--radius-pill);
    margin-bottom: 16px;
}

.pain-tag {
    background: rgba(255, 71, 126, 0.18);
    color: #FF758F;
    border: 1px solid #FF477E;
}

.sol-tag {
    background: rgba(0, 245, 212, 0.15);
    color: var(--c-accent-cyan);
    border: 1px solid var(--c-accent-cyan);
}

.scene-split-box h3 {
    font-size: 20px;
    font-weight: 850;
    margin-bottom: 14px;
    color: #FFFFFF;
}

.scene-split-box p {
    font-size: 14.5px;
    color: var(--c-text-secondary);
    line-height: 1.7;
}

/* ==========================================================================
   板块 8：证明 B (3 组对比条)
   ========================================================================== */
.proof-b-cards {
    display: flex;
    flex-direction: column;
    gap: 20px;
    max-width: 900px;
    margin: 0 auto;
}

.proof-compare-row {
    background: var(--c-uv-card);
    border: 1.5px solid rgba(157, 78, 221, 0.3);
    border-radius: var(--radius-md);
    padding: 24px 28px;
    display: grid;
    grid-template-columns: 180px 1fr 1fr;
    gap: 24px;
    align-items: center;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
}

.compare-metric-title {
    font-size: 16px;
    font-weight: 800;
    color: var(--c-text-primary);
}

.compare-box-bad {
    background: rgba(255, 71, 126, 0.1);
    border: 1px solid rgba(255, 71, 126, 0.35);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    font-size: 13.5px;
    color: #FFB3C1;
}

.compare-box-good {
    background: rgba(0, 245, 212, 0.1);
    border: 1.5px solid var(--c-accent-cyan);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    font-size: 13.5px;
    color: var(--c-accent-cyan);
    font-weight: 750;
}

/* ==========================================================================
   板块 9：定价 (周期切换 + 3 档套餐，中间档描边强调)
   ========================================================================== */
.billing-cycle-switch {
    display: inline-flex;
    background: rgba(26, 16, 46, 0.9);
    padding: 6px;
    border-radius: var(--radius-pill);
    border: 1.5px solid rgba(157, 78, 221, 0.45);
    margin-bottom: 40px;
}

.cycle-btn {
    background: none;
    border: none;
    color: var(--c-text-secondary);
    padding: 9px 24px;
    font-size: 14.5px;
    font-weight: 700;
    border-radius: var(--radius-pill);
    cursor: pointer;
    transition: all 0.25s ease;
}

.cycle-btn.active {
    background: var(--c-uv-neon);
    color: #0A0612;
    font-weight: 850;
    box-shadow: 0 0 16px rgba(199, 125, 255, 0.5);
}

.pricing-cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    align-items: stretch;
}

.pricing-card {
    background: var(--c-uv-card);
    border: var(--shadow-flat-border);
    border-radius: var(--radius-lg);
    padding: 38px 30px;
    display: flex;
    flex-direction: column;
    position: relative;
    box-shadow: var(--shadow-breakout);
    transition: all 0.3s ease;
}

.pricing-card:hover {
    transform: translateY(-6px);
    border-color: var(--c-uv-neon);
}

.pricing-card.featured-plan {
    background: linear-gradient(180deg, rgba(38, 22, 66, 0.96) 0%, rgba(22, 14, 39, 0.98) 100%);
    border: 2.5px solid var(--c-uv-neon);
    box-shadow: 0 20px 45px rgba(0, 0, 0, 0.7), 0 0 35px rgba(157, 78, 221, 0.4);
    transform: scale(1.04);
    z-index: 2;
}

.pricing-card.featured-plan:hover {
    transform: scale(1.06) translateY(-6px);
}

.popular-ribbon {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--c-accent-cyan), #00B4D8);
    color: #0A0612;
    font-size: 12px;
    font-weight: 900;
    padding: 4px 18px;
    border-radius: var(--radius-pill);
    box-shadow: 0 4px 15px rgba(0, 245, 212, 0.45);
    white-space: nowrap;
    text-transform: uppercase;
}

.plan-title {
    font-size: 22px;
    font-weight: 900;
    margin-bottom: 8px;
    color: #FFFFFF;
}

.plan-subtitle {
    font-size: 13px;
    color: var(--c-text-muted);
    margin-bottom: 24px;
}

.plan-price-box {
    display: flex;
    align-items: baseline;
    gap: 4px;
    margin-bottom: 26px;
    padding-bottom: 24px;
    border-bottom: 1.5px solid rgba(157, 78, 221, 0.2);
}

.price-currency {
    font-size: 22px;
    font-weight: 800;
    color: var(--c-uv-neon);
}

.price-amount {
    font-size: 46px;
    font-weight: 950;
    color: #FFFFFF;
    line-height: 1;
}

.price-period {
    font-size: 13.5px;
    color: var(--c-text-muted);
    font-weight: 600;
}

.plan-feature-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-bottom: 32px;
    flex: 1;
}

.plan-feature-list li {
    font-size: 14px;
    color: var(--c-text-secondary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.plan-feature-list li::before {
    content: "✓";
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: rgba(157, 78, 221, 0.2);
    border: 1.5px solid var(--c-uv-neon);
    color: var(--c-uv-neon);
    font-size: 11px;
    font-weight: 900;
    flex-shrink: 0;
}

/* ==========================================================================
   板块 10：获取 (3×2 下载卡 + 移动端说明)
   ========================================================================== */
.download-3x2-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 26px;
    margin-bottom: 36px;
}

.download-app-card {
    background: var(--c-uv-card);
    border: var(--shadow-flat-border);
    border-radius: var(--radius-lg);
    padding: 26px 22px;
    display: flex;
    align-items: center;
    gap: 18px;
    transition: all 0.3s ease;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.download-app-card:hover {
    transform: translateY(-5px);
    border-color: var(--c-uv-neon);
    background: var(--c-uv-card-hover);
}

.app-platform-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, rgba(157, 78, 221, 0.25), rgba(0, 245, 212, 0.2));
    border: 1.5px solid var(--c-uv-neon);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    flex-shrink: 0;
}

.app-info-col h3 {
    font-size: 17px;
    font-weight: 800;
    margin-bottom: 4px;
    color: var(--c-text-primary);
}

.app-info-col p {
    font-size: 12.5px;
    color: var(--c-text-muted);
    margin-bottom: 10px;
}

.app-download-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 750;
    color: var(--c-uv-neon);
    text-decoration: none;
    border: 1.5px solid rgba(157, 78, 221, 0.4);
    padding: 4px 14px;
    border-radius: var(--radius-pill);
    transition: all 0.2s ease;
}

.app-download-btn:hover {
    background: var(--c-uv-neon);
    color: #0A0612;
}

.mobile-note-banner {
    background: rgba(26, 16, 46, 0.8);
    border: 1.5px dashed var(--c-uv-neon);
    border-radius: var(--radius-md);
    padding: 18px 26px;
    text-align: center;
    font-size: 14px;
    color: var(--c-text-secondary);
}

.mobile-note-banner strong {
    color: var(--c-accent-cyan);
}

/* ==========================================================================
   板块 11：口碑 (3 列引用卡)
   ========================================================================== */
.reviews-3col-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.review-card {
    background: var(--c-uv-card);
    border: 1.5px solid rgba(157, 78, 221, 0.3);
    border-radius: var(--radius-lg);
    padding: 30px 26px;
    box-shadow: var(--shadow-breakout);
    display: flex;
    flex-direction: column;
}

.review-stars {
    color: var(--c-accent-gold);
    font-size: 16px;
    margin-bottom: 14px;
    letter-spacing: 2px;
}

.review-quote {
    font-size: 14.5px;
    color: var(--c-text-secondary);
    line-height: 1.7;
    margin-bottom: 22px;
    flex: 1;
    font-style: italic;
}

.review-user-info {
    display: flex;
    align-items: center;
    gap: 14px;
}

.review-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--c-uv-neon), var(--c-accent-cyan));
    border: 2px solid #FFFFFF;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 850;
    color: #0A0612;
}

.user-name {
    font-size: 15px;
    font-weight: 800;
    color: #FFFFFF;
}

.user-title {
    font-size: 12px;
    color: var(--c-text-muted);
}

/* ==========================================================================
   板块 12：FAQ (分类手风琴，默认全部折叠)
   ========================================================================== */
.faq-category-bar {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.faq-cat-btn {
    background: rgba(22, 14, 39, 0.8);
    border: 1.5px solid rgba(157, 78, 221, 0.35);
    color: var(--c-text-secondary);
    padding: 8px 18px;
    border-radius: var(--radius-pill);
    font-size: 13.5px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
}

.faq-cat-btn.active, .faq-cat-btn:hover {
    background: var(--c-uv-neon);
    color: #0A0612;
    border-color: #FFFFFF;
}

.faq-accordion-wrap {
    max-width: 860px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.faq-item-card {
    background: var(--c-uv-card);
    border: 1.5px solid rgba(157, 78, 221, 0.3);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: border-color 0.25s ease;
}

.faq-item-card:hover {
    border-color: var(--c-uv-neon);
}

.faq-header-bar {
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-size: 16px;
    font-weight: 800;
    color: var(--c-text-primary);
    user-select: none;
}

.faq-icon-toggle {
    font-size: 20px;
    font-weight: 700;
    color: var(--c-uv-neon);
    transition: transform 0.3s ease;
}

.faq-item-card.open .faq-icon-toggle {
    transform: rotate(45deg);
}

.faq-answer-body {
    display: none;
    padding: 0 24px 22px;
    font-size: 14.5px;
    color: var(--c-text-secondary);
    line-height: 1.75;
    border-top: 1px solid rgba(157, 78, 221, 0.2);
    margin-top: -6px;
    padding-top: 16px;
}

.faq-item-card.open .faq-answer-body {
    display: block;
}

/* ==========================================================================
   板块 13：收口 (居中价值句 + 主/次 CTA + 3.webp)
   ========================================================================== */
.closure-card-box {
    background: linear-gradient(180deg, #1C1032 0%, #0F081C 100%);
    border: 2.5px solid var(--c-uv-neon);
    border-radius: var(--radius-lg);
    padding: 60px 40px;
    text-align: center;
    box-shadow: var(--shadow-breakout);
    position: relative;
    overflow: hidden;
}

.closure-title {
    font-size: 34px;
    font-weight: 950;
    margin-bottom: 16px;
    color: #FFFFFF;
}

.closure-desc {
    font-size: 16px;
    color: var(--c-text-secondary);
    max-width: 650px;
    margin: 0 auto 32px;
    line-height: 1.7;
}

.closure-cta-row {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 18px;
    margin-bottom: 40px;
}

.closure-visual-wrap {
    max-width: 800px;
    margin: 0 auto;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 2px solid rgba(157, 78, 221, 0.4);
    box-shadow: var(--shadow-breakout);
}

.closure-visual-wrap img {
    width: 100%;
    height: auto;
    display: block;
}

/* ==========================================================================
   板块 14：页脚 (品牌简介 + 4 组链接 + 合规/备案)
   ========================================================================== */
footer {
    background: #08040E;
    border-top: 2px solid var(--c-uv-primary);
    padding: 70px 0 35px;
    position: relative;
}

.footer-top-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 50px;
}

.footer-col h4 {
    font-size: 15px;
    font-weight: 850;
    color: #FFFFFF;
    margin-bottom: 18px;
    letter-spacing: 0.5px;
}

.footer-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-col ul a {
    text-decoration: none;
    color: var(--c-text-muted);
    font-size: 13.5px;
    transition: color 0.2s ease;
}

.footer-col ul a:hover {
    color: var(--c-uv-neon);
}

.footer-bottom-row {
    border-top: 1px solid rgba(157, 78, 221, 0.2);
    padding-top: 26px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    color: var(--c-text-muted);
}

.footer-bottom-row a {
    color: var(--c-text-muted);
    text-decoration: none;
    margin-left: 18px;
    transition: color 0.2s ease;
}

.footer-bottom-row a:hover {
    color: var(--c-uv-neon);
}

/* 悬浮操作按钮 */
.fixed-floating-actions {
    position: fixed;
    right: 24px;
    bottom: 30px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 999;
}

.float-btn {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    font-weight: 800;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.25s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
}

.float-btn-primary {
    background: linear-gradient(135deg, var(--c-uv-neon), var(--c-accent-cyan));
    color: #0A0612;
    border: 1.5px solid #FFFFFF;
}

.float-btn-primary:hover {
    transform: scale(1.1);
    box-shadow: 0 0 20px rgba(199, 125, 255, 0.7);
}

.float-btn-secondary {
    background: rgba(22, 14, 39, 0.9);
    color: var(--c-uv-neon);
    border: 1.5px solid var(--c-uv-neon);
}

.float-btn-secondary:hover {
    background: var(--c-uv-neon);
    color: #0A0612;
    transform: translateY(-3px);
}

/* 子页面顶部横幅 */
.page-header-banner {
    padding: 70px 0 50px;
    text-align: center;
    background: linear-gradient(180deg, #180D2B 0%, #0A0612 100%);
    border-bottom: 1.5px solid rgba(157, 78, 221, 0.25);
}

.page-header-title {
    font-size: 38px;
    font-weight: 950;
    color: #FFFFFF;
    margin-bottom: 14px;
}

.page-header-desc {
    font-size: 16px;
    color: var(--c-text-secondary);
    max-width: 650px;
    margin: 0 auto;
    line-height: 1.7;
}

/* 响应式断点适配 */
@media (max-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 50px;
    }
    .hero-right-map-wrap {
        order: -1;
    }
    .breakout-overlap-right, .breakout-overlap-left {
        margin: 0;
    }
    .proof-a-grid {
        grid-template-columns: 1fr;
    }
    .footer-top-grid {
        grid-template-columns: 1fr 1fr;
    }
    .pricing-cards-grid {
        grid-template-columns: 1fr;
    }
    .pricing-card.featured-plan {
        transform: none;
    }
    .pricing-card.featured-plan:hover {
        transform: translateY(-6px);
    }
}

@media (max-width: 768px) {
    .hamburger-btn {
        display: block;
    }
    #mainNav {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: #110B1F;
        border-bottom: 2px solid var(--c-uv-neon);
        padding: 20px;
    }
    #mainNav.nav-open {
        display: block;
    }
    .nav-links {
        flex-direction: column;
        gap: 16px;
    }
    .kpi-grid-4 {
        grid-template-columns: 1fr 1fr;
        gap: 20px;
    }
    .features-3x2-grid, .download-3x2-grid, .reviews-3col-grid {
        grid-template-columns: 1fr;
    }
    .scene-split-box {
        grid-template-columns: 1fr;
    }
    .scene-pain-col {
        border-right: none;
        border-bottom: 1.5px solid rgba(157, 78, 221, 0.2);
        padding-right: 0;
        padding-bottom: 24px;
    }
    .proof-compare-row {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    .hero-h1 {
        font-size: 32px;
    }
    .footer-top-grid {
        grid-template-columns: 1fr;
    }
    .footer-bottom-row {
        flex-direction: column;
        gap: 14px;
        text-align: center;
    }
}