/* ====================================================================
   万达云 (wandayun.help) 动漫绿色系沉浸式全局样式表
   设计风格：动漫翡翠薄荷绿、玻璃拟态、代码级矢量背景画、轻量微动效
   ==================================================================== */

:root {
    --bg-main: #f4fbf7;
    --bg-card: rgba(255, 255, 255, 0.92);
    --bg-card-muted: #e6f7ef;
    --text-primary: #064e3b;
    --text-secondary: #1e3a2f;
    --text-muted: #4b6358;
    --color-primary: #059669;
    --color-primary-hover: #047857;
    --color-primary-light: #ecfdf5;
    --color-accent: #10b981;
    --color-accent-mint: #34d399;
    --color-accent-glow: rgba(16, 185, 129, 0.28);
    --border-color: rgba(16, 185, 129, 0.18);
    --border-hover: rgba(16, 185, 129, 0.45);
    --shadow-sm: 0 2px 4px 0 rgba(6, 78, 59, 0.04);
    --shadow-md: 0 6px 16px -2px rgba(6, 78, 59, 0.07), 0 2px 6px -1px rgba(16, 185, 129, 0.05);
    --shadow-lg: 0 16px 32px -4px rgba(6, 78, 59, 0.1), 0 6px 12px -2px rgba(16, 185, 129, 0.08);
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    --max-width: 1200px;
    --header-height: 74px;
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-main);
    color: var(--text-secondary);
    line-height: 1.68;
    padding-bottom: 76px;
    overflow-x: hidden;
    position: relative;
}

@media (min-width: 769px) {
    body {
        padding-bottom: 0;
    }
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

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

a:focus-visible, button:focus-visible, summary:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

img, svg {
    display: block;
    max-width: 100%;
}

/* 动漫环境光晕画布层 (全代码生成，无需加载任何图片) */
.anime-ambient-layer {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 980px;
    overflow: hidden;
    z-index: -1;
    pointer-events: none;
}

.anime-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(70px);
    opacity: 0.6;
    animation: animeFloat 10s ease-in-out infinite alternate;
}

.orb-1 {
    width: 480px;
    height: 480px;
    background: radial-gradient(circle, rgba(52, 211, 153, 0.45) 0%, rgba(16, 185, 129, 0.05) 70%);
    top: -120px;
    left: -100px;
}

.orb-2 {
    width: 520px;
    height: 520px;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.35) 0%, rgba(5, 150, 105, 0.04) 70%);
    top: 180px;
    right: -150px;
    animation-delay: -5s;
}

.orb-3 {
    width: 380px;
    height: 380px;
    background: radial-gradient(circle, rgba(110, 231, 183, 0.4) 0%, rgba(16, 185, 129, 0) 70%);
    top: 500px;
    left: 25%;
    animation-delay: -2s;
}

@keyframes animeFloat {
    0% {
        transform: translate(0, 0) scale(1);
    }
    50% {
        transform: translate(30px, -25px) scale(1.08);
    }
    100% {
        transform: translate(-25px, 20px) scale(0.95);
    }
}

/* 布局容器 */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin-left: auto;
    margin-right: auto;
    padding-left: 20px;
    padding-right: 20px;
}

.section {
    padding: 68px 0;
    position: relative;
}

@media (min-width: 768px) {
    .section {
        padding: 92px 0;
    }
}

.section-header {
    text-align: center;
    max-width: 760px;
    margin: 0 auto 52px auto;
}

/* 非对称左右排版标题结构 (打破千篇一律的居中) */
.section-header-asymmetric {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 48px;
    text-align: left;
}

@media (min-width: 860px) {
    .section-header-asymmetric {
        flex-direction: row;
        align-items: flex-end;
        justify-content: space-between;
    }
    .section-header-asymmetric .header-left-col {
        max-width: 62%;
    }
    .section-header-asymmetric .header-right-col {
        max-width: 36%;
        text-align: right;
    }
}

.section-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-primary);
    background-color: var(--color-primary-light);
    padding: 3px 10px;
    border-radius: 6px;
    margin-bottom: 12px;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.section-title {
    font-size: 1.875rem;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1.3;
    margin-bottom: 14px;
    letter-spacing: -0.01em;
}

@media (min-width: 768px) {
    .section-title {
        font-size: 2.35rem;
    }
}

.section-subtitle {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.65;
}

/* 按钮规范 (触控目标 ≥ 44px，带有动漫流光微动效) */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.95rem;
    min-height: 44px;
    padding: 11px 26px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    border: 1px solid transparent;
    transition: all 0.25s ease;
    text-align: center;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(16, 185, 129, 0.35);
}

.btn-primary::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -60%;
    width: 40%;
    height: 200%;
    background: linear-gradient(to right, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0.3) 50%, rgba(255, 255, 255, 0) 100%);
    transform: rotate(25deg);
    animation: animeShimmer 4s ease-in-out infinite;
}

@keyframes animeShimmer {
    0%, 70% {
        left: -60%;
    }
    100% {
        left: 140%;
    }
}

.btn-primary:hover {
    background: linear-gradient(135deg, #059669 0%, #047857 100%);
    color: #ffffff;
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.45);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: rgba(255, 255, 255, 0.9);
    color: var(--text-primary);
    border-color: var(--border-color);
    backdrop-filter: blur(8px);
}

.btn-secondary:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background-color: var(--color-primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.btn-block {
    display: flex;
    width: 100%;
}

.btn-lg {
    min-height: 48px;
    padding: 13px 34px;
    font-size: 1.05rem;
    border-radius: var(--radius-md);
}

/* 头部导航 (动漫玻璃拟态) */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background-color: rgba(244, 251, 247, 0.88);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border-color);
    height: var(--header-height);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 11px;
    color: var(--text-primary);
    font-weight: 800;
    font-size: 1.3rem;
    letter-spacing: -0.01em;
}

.brand-logo:hover {
    color: var(--color-primary);
}

.logo-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: linear-gradient(135deg, #10b981 0%, #047857 100%);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    font-size: 1.15rem;
    box-shadow: 0 4px 10px rgba(16, 185, 129, 0.35);
}

.site-nav {
    display: none;
    align-items: center;
    gap: 26px;
}

@media (min-width: 900px) {
    .site-nav {
        display: flex;
    }
}

.nav-link {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.95rem;
    padding: 8px 0;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: width 0.25s ease;
}

.nav-link:hover::after, .nav-link.active::after {
    width: 100%;
}

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

.header-cta-group {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* 移动端汉堡菜单按钮 (≥ 44px) */
.menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: rgba(255, 255, 255, 0.8);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    cursor: pointer;
}

@media (min-width: 900px) {
    .menu-toggle {
        display: none;
    }
}

.menu-toggle svg {
    width: 24px;
    height: 24px;
}

/* 移动端下拉导航抽屉 */
.mobile-nav-drawer {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    padding: 20px 24px;
}

.mobile-nav-drawer.is-active {
    display: block;
}

.mobile-nav-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.mobile-nav-list a {
    display: block;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
}

/* 面包屑导航 */
.breadcrumb {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.breadcrumb a {
    color: var(--text-secondary);
}

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

.breadcrumb-separator {
    color: var(--text-muted);
}

/* Hero 主视觉区 (以纯代码动漫科技自然山水为全幅背景，带多层微动效) */
.hero-section {
    padding: 72px 0 96px 0;
    position: relative;
    overflow: hidden;
    background-color: #022c22;
}

@media (min-width: 768px) {
    .hero-section {
        padding: 92px 0 128px 0;
    }
}

/* 全景动漫风景画背景层 (100% 纯代码 SVG，扩展到背景，零外部图片加载) */
.hero-scenery-backdrop {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    overflow: hidden;
    pointer-events: none;
}

.hero-scenery-backdrop svg {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* 底部柔和淡出渐变层，无缝融入下方白绿主色调 */
.hero-scenery-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, 
        rgba(2, 44, 34, 0.45) 0%, 
        rgba(2, 44, 34, 0.25) 40%, 
        rgba(2, 44, 34, 0.72) 75%, 
        #f0fdf4 100%);
    pointer-events: none;
}

.hero-inner {
    text-align: center;
    max-width: 860px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(6, 78, 59, 0.8);
    border: 1px solid rgba(52, 211, 153, 0.5);
    color: #ecfdf5;
    font-size: 0.85rem;
    font-weight: 700;
    padding: 6px 16px;
    border-radius: 999px;
    margin-bottom: 22px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.hero-tag-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--color-accent);
    animation: pulseGlow 2s infinite;
}

@keyframes pulseGlow {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.6);
    }
    50% {
        transform: scale(1.2);
        box-shadow: 0 0 0 6px rgba(16, 185, 129, 0);
    }
}

.hero-title {
    font-size: 2.25rem;
    font-weight: 900;
    color: #ffffff;
    line-height: 1.25;
    letter-spacing: -0.025em;
    margin-bottom: 22px;
    text-shadow: 0 4px 24px rgba(0, 0, 0, 0.6);
}

@media (min-width: 768px) {
    .hero-title {
        font-size: 3.25rem;
    }
}

.hero-title-accent {
    color: #34d399;
    position: relative;
    display: inline-block;
    background: linear-gradient(135deg, #a7f3d0 0%, #34d399 50%, #10b981 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    padding: 0 4px;
    text-shadow: none;
    filter: drop-shadow(0 2px 10px rgba(16, 185, 129, 0.6));
}

.hero-title-accent::after {
    content: '';
    position: absolute;
    bottom: 3px;
    left: 0;
    right: 0;
    height: 8px;
    background: rgba(52, 211, 153, 0.35);
    z-index: -1;
    border-radius: 4px;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: #e2e8f0;
    line-height: 1.75;
    margin-bottom: 36px;
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.6);
}

@media (min-width: 768px) {
    .hero-subtitle {
        font-size: 1.3rem;
    }
}

.hero-actions {
    display: flex;
    flex-direction: column;
    gap: 16px;
    justify-content: center;
    align-items: center;
    margin-bottom: 44px;
}

@media (min-width: 540px) {
    .hero-actions {
        flex-direction: row;
        gap: 18px;
    }
}

.hero-actions .btn-secondary {
    background-color: rgba(255, 255, 255, 0.16);
    color: #ffffff;
    border-color: rgba(255, 255, 255, 0.35);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.25);
}

.hero-actions .btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.28);
    border-color: #ffffff;
    color: #ffffff;
    transform: translateY(-2px);
}

.hero-highlights {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
    padding-top: 28px;
    border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.925rem;
    font-weight: 600;
    color: #f1f5f9;
    background: rgba(6, 78, 59, 0.55);
    padding: 6px 16px;
    border-radius: 999px;
    border: 1px solid rgba(52, 211, 153, 0.3);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.6);
}

.highlight-icon {
    width: 18px;
    height: 18px;
    color: #34d399;
    flex-shrink: 0;
}

/* 动态微动效系统 (SVG 背景元素专属) */
@keyframes animeAurora {
    0% {
        transform: translateY(0) scaleY(1);
        opacity: 0.65;
    }
    50% {
        transform: translateY(-12px) scaleY(1.15);
        opacity: 0.95;
    }
    100% {
        transform: translateY(0) scaleY(1);
        opacity: 0.65;
    }
}

.anim-aurora {
    animation: animeAurora 8s ease-in-out infinite;
}

@keyframes starTwinkle1 {
    0%, 100% { opacity: 0.25; transform: scale(0.8); }
    50% { opacity: 1; transform: scale(1.4); }
}

@keyframes starTwinkle2 {
    0%, 100% { opacity: 0.95; transform: scale(1.2); }
    50% { opacity: 0.2; transform: scale(0.7); }
}

.anim-star-1 {
    animation: starTwinkle1 3s ease-in-out infinite;
    transform-box: fill-box;
    transform-origin: center;
}

.anim-star-2 {
    animation: starTwinkle2 4s ease-in-out infinite 1s;
    transform-box: fill-box;
    transform-origin: center;
}

.anim-star-3 {
    animation: starTwinkle1 2.5s ease-in-out infinite 0.7s;
    transform-box: fill-box;
    transform-origin: center;
}

@keyframes coreBreathing {
    0%, 100% {
        transform: scale(0.96);
        opacity: 0.85;
    }
    50% {
        transform: scale(1.06);
        opacity: 1;
    }
}

.anim-core {
    animation: coreBreathing 4.5s ease-in-out infinite;
    transform-box: fill-box;
    transform-origin: center;
}

@keyframes orbitRotateSlow {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

@keyframes orbitRotateReverse {
    from {
        transform: rotate(360deg);
    }
    to {
        transform: rotate(0deg);
    }
}

.anim-orbit-1 {
    animation: orbitRotateSlow 40s linear infinite;
    transform-box: fill-box;
    transform-origin: center;
}

.anim-orbit-2 {
    animation: orbitRotateReverse 55s linear infinite;
    transform-box: fill-box;
    transform-origin: center;
}

@keyframes beaconPulse {
    0% {
        r: 6;
        opacity: 1;
        stroke-width: 2;
    }
    100% {
        r: 36;
        opacity: 0;
        stroke-width: 0.5;
    }
}

.anim-beacon {
    animation: beaconPulse 2.8s cubic-bezier(0.2, 0.8, 0.4, 1) infinite;
    transform-box: fill-box;
    transform-origin: center;
}

@keyframes dataFlow {
    0% {
        stroke-dashoffset: 24;
        opacity: 0.3;
    }
    50% {
        opacity: 1;
    }
    100% {
        stroke-dashoffset: -24;
        opacity: 0.3;
    }
}

.anim-dataline {
    animation: dataFlow 2.5s linear infinite;
}

@keyframes mistWave {
    0%, 100% {
        transform: translateX(0);
    }
    50% {
        transform: translateX(-20px);
    }
}

.anim-mist {
    animation: mistWave 12s ease-in-out infinite;
}

/* 特性区 Bento Grid (便当盒非对称错落布局，彻底去重固有方块) */
.bento-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

@media (min-width: 680px) {
    .bento-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1040px) {
    .bento-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    /* Bento 跨列与非对称伸展 */
    .bento-card-wide-left {
        grid-column: span 2;
    }
    
    .bento-card-tall {
        grid-column: span 1;
    }
    
    .bento-card-wide-right {
        grid-column: span 2;
    }
}

.feature-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 30px 24px;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    backdrop-filter: blur(8px);
    position: relative;
    display: flex;
    flex-direction: column;
}

.feature-card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.feature-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 18px;
}

.feature-icon-box {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.15) 0%, rgba(5, 150, 105, 0.25) 100%);
    color: var(--color-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(16, 185, 129, 0.25);
}

.feature-pill-badge {
    font-size: 0.75rem;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: 999px;
    background-color: var(--color-primary-light);
    color: var(--color-primary-dark);
    border: 1px solid rgba(16, 185, 129, 0.3);
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 800;
    margin-bottom: 10px;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.feature-desc {
    font-size: 0.925rem;
    color: var(--text-secondary);
    line-height: 1.65;
}

/* Bento 大号实测指标模块 (字号跳跃与视觉冲击) */
.bento-metric-row {
    margin-top: auto;
    padding-top: 18px;
    border-top: 1px dashed var(--border-color);
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
}

.bento-metric-val {
    font-size: 2.25rem;
    font-weight: 900;
    color: var(--color-primary);
    line-height: 1;
    font-feature-settings: "tnum";
    letter-spacing: -0.02em;
}

.bento-metric-unit {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-left: 2px;
}

.bento-metric-note {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* Bento 紧凑设备矩阵标签 */
.bento-device-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: auto;
    padding-top: 16px;
}

.bento-chip {
    font-size: 0.775rem;
    font-weight: 600;
    padding: 3px 9px;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

/* 使用场景卡 (非对称高低错落排版 + 不规则微圆角) */
.usecase-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 28px;
}

@media (min-width: 900px) {
    .usecase-grid {
        grid-template-columns: 1fr 1.06fr 1fr;
        align-items: center;
    }
}

.usecase-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 32px 26px;
    display: flex;
    flex-direction: column;
    position: relative;
    backdrop-filter: blur(8px);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.usecase-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border-hover);
}

/* 中间重点卡片突起错落 (Staggered Elevation) */
@media (min-width: 900px) {
    .usecase-card.stagger-elevated {
        transform: translateY(-14px);
        border: 2px solid var(--color-primary);
        box-shadow: 0 16px 36px rgba(16, 185, 129, 0.18);
        background: linear-gradient(180deg, #ffffff 0%, #f7fdfa 100%);
    }
    .usecase-card.stagger-elevated:hover {
        transform: translateY(-20px);
    }
}

/* 不规则圆角 (打破千篇一律的对称圆角) */
.irregular-radius-1 {
    border-radius: 28px 8px 28px 8px;
    border-top: 4px solid var(--color-primary);
}

.irregular-radius-2 {
    border-radius: 8px 28px 8px 28px;
    border-top: 4px solid #059669;
}

.irregular-radius-3 {
    border-radius: 24px 24px 8px 24px;
    border-top: 4px solid #34d399;
}

.usecase-tag {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--color-primary-dark);
    background-color: var(--color-primary-light);
    padding: 4px 12px;
    border-radius: 999px;
    align-self: flex-start;
    margin-bottom: 16px;
    border: 1px solid rgba(16, 185, 129, 0.25);
}

.usecase-tag.tag-floating-right {
    align-self: flex-end;
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: #ffffff;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
    border: none;
}

.usecase-title {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 12px;
    letter-spacing: -0.01em;
}

.usecase-meta {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 14px;
    padding-bottom: 14px;
    border-bottom: 1px dashed var(--border-color);
}

.usecase-meta strong {
    color: var(--text-secondary);
}

.usecase-desc {
    font-size: 0.925rem;
    color: var(--text-secondary);
    line-height: 1.65;
    flex-grow: 1;
}

/* 流媒体与 AI 支持模块 (非对半分栏 58/42 + 动态字号标签池) */
.media-ai-box {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 38px 26px;
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(10px);
}

@media (min-width: 768px) {
    .media-ai-box {
        padding: 48px;
    }
}

.media-ai-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
}

@media (min-width: 960px) {
    .media-ai-grid {
        grid-template-columns: 1.16fr 0.84fr;
        gap: 48px;
    }
}

.support-category h3 {
    font-size: 1.3rem;
    font-weight: 800;
    margin-bottom: 12px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.support-category p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 20px;
}

.tag-list {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
}

.tag-pill {
    background-color: #ffffff;
    border: 1px solid var(--border-color);
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    transition: all 0.2s ease;
}

.tag-pill:hover {
    border-color: var(--color-primary);
    background-color: var(--color-primary-light);
}

/* 核心服务强化大号标签 */
.tag-pill-lg {
    font-size: 0.95rem;
    font-weight: 700;
    padding: 8px 18px;
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.12) 0%, rgba(5, 150, 105, 0.2) 100%);
    border: 1px solid var(--color-primary);
    color: var(--color-primary-dark);
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.15);
}

/* 辅助轻量小标签 */
.tag-pill-sm {
    font-size: 0.8rem;
    padding: 5px 12px;
    opacity: 0.88;
}

/* 核心优势 Benefits */
.benefits-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

@media (min-width: 768px) {
    .benefits-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.benefit-item {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 30px 24px;
    backdrop-filter: blur(8px);
    transition: all 0.3s ease;
}

.benefit-item:hover {
    transform: translateY(-3px);
    border-color: var(--border-hover);
    box-shadow: var(--shadow-md);
}

.benefit-item h3 {
    font-size: 1.18rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.benefit-item p {
    font-size: 0.925rem;
    color: var(--text-secondary);
    line-height: 1.65;
}

/* 定价区 Pricing (3 档位) */
.pricing-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    align-items: stretch;
}

@media (min-width: 900px) {
    .pricing-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.pricing-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 34px 26px;
    display: flex;
    flex-direction: column;
    position: relative;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.pricing-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--border-hover);
    transform: translateY(-4px);
}

.pricing-card.featured {
    border: 2px solid var(--color-primary);
    box-shadow: 0 12px 30px rgba(16, 185, 129, 0.18);
    background: linear-gradient(180deg, #ffffff 0%, #fafffc 100%);
}

.featured-badge {
    position: absolute;
    top: -13px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: #ffffff;
    font-size: 0.8rem;
    font-weight: 800;
    padding: 4px 16px;
    border-radius: 999px;
    letter-spacing: 0.03em;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.4);
}

.plan-header {
    margin-bottom: 24px;
    text-align: center;
}

.plan-name {
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.plan-target {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.plan-price-box {
    margin: 20px 0;
}

.plan-price {
    font-size: 2.35rem;
    font-weight: 900;
    color: var(--color-primary);
    line-height: 1;
}

.plan-currency {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-secondary);
}

.plan-period {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 400;
}

.plan-features {
    list-style: none;
    margin: 0 0 30px 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex-grow: 1;
}

.plan-features li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 0.925rem;
    color: var(--text-secondary);
}

.plan-features .check-icon {
    width: 18px;
    height: 18px;
    color: var(--color-primary);
    flex-shrink: 0;
    margin-top: 2px;
}

/* 常见问题 FAQ (原生 details/summary 手风琴) */
.faq-list {
    max-width: 840px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all 0.25s ease;
    backdrop-filter: blur(8px);
}

.faq-item:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-sm);
}

.faq-item details summary {
    padding: 18px 24px;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    user-select: none;
    min-height: 52px;
}

.faq-item details summary::-webkit-details-marker {
    display: none;
}

.faq-summary-left {
    display: flex;
    align-items: center;
    gap: 14px;
}

.faq-number {
    font-size: 0.875rem;
    font-weight: 900;
    color: var(--color-primary);
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.12) 0%, rgba(5, 150, 105, 0.2) 100%);
    width: 32px;
    height: 32px;
    border-radius: 8px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-feature-settings: "tnum";
    border: 1px solid rgba(16, 185, 129, 0.25);
}

.faq-toggle-icon {
    width: 20px;
    height: 20px;
    color: var(--color-primary);
    transition: transform 0.25s ease;
    flex-shrink: 0;
    margin-left: 12px;
}

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

.faq-answer {
    padding: 0 24px 22px 70px;
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

@media (max-width: 640px) {
    .faq-answer {
        padding-left: 24px;
    }
}

/* Final CTA 底部转化区 */
.final-cta-section {
    padding: 68px 0;
    background: linear-gradient(180deg, #ffffff 0%, var(--bg-main) 100%);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.final-cta-inner {
    text-align: center;
    max-width: 680px;
    margin: 0 auto;
}

.final-cta-title {
    font-size: 1.95rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 14px;
}

.final-cta-desc {
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-bottom: 30px;
}

/* 页脚 Footer (仅放导航、版权与联盟披露，绝不放文章列表) */
.site-footer {
    background-color: #ffffff;
    color: var(--text-secondary);
    padding: 48px 0 28px 0;
    border-top: 1px solid var(--border-color);
    font-size: 0.875rem;
}

.footer-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 20px;
}

.footer-nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 18px;
}

.footer-nav a {
    color: var(--text-secondary);
    font-weight: 600;
}

.footer-nav a:hover {
    color: var(--color-primary);
}

.footer-disclosure {
    font-size: 0.825rem;
    color: var(--text-muted);
    max-width: 600px;
    line-height: 1.5;
}

.footer-copyright {
    color: var(--text-muted);
    font-size: 0.825rem;
}

/* 移动端吸底 CTA 栏 (滚动超过首屏后出现，带呼吸光点) */
.mobile-sticky-cta {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background-color: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-top: 1px solid var(--border-color);
    padding: 10px 16px;
    box-shadow: 0 -4px 16px rgba(6, 78, 59, 0.08);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    transform: translateY(100%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.mobile-sticky-cta.visible {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
}

@media (min-width: 769px) {
    .mobile-sticky-cta {
        display: none !important;
    }
}

.mobile-cta-info {
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.mobile-cta-pulse-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--color-accent);
    animation: pulseGlow 2s infinite;
    flex-shrink: 0;
}

.mobile-cta-title {
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.3;
}

.mobile-cta-desc {
    color: var(--text-muted);
    font-size: 0.75rem;
}

/* 指南页卡片图标与布局 */
.guide-card-thumb {
    width: 100%;
    height: 140px;
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1) 0%, rgba(5, 150, 105, 0.18) 100%);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    color: var(--color-primary);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.guide-card-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 8px;
}

/* 文章详情页与内容页排版 */
.article-header {
    margin-bottom: 36px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border-color);
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 16px;
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: 12px;
}

.article-body {
    font-size: 1.05rem;
    line-height: 1.82;
    color: var(--text-secondary);
    max-width: 820px;
    margin: 0 auto;
}

.article-body h2 {
    font-size: 1.55rem;
    font-weight: 800;
    margin: 40px 0 16px 0;
    color: var(--text-primary);
    line-height: 1.35;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-color);
}

.article-body h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 28px 0 12px 0;
    color: var(--text-primary);
}

.article-body p {
    margin-bottom: 20px;
}

.article-body ul, .article-body ol {
    margin-bottom: 20px;
    padding-left: 24px;
}

.article-body li {
    margin-bottom: 8px;
}

.article-callout {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.08) 0%, rgba(5, 150, 105, 0.14) 100%);
    border-left: 5px solid var(--color-primary);
    padding: 20px 24px;
    border-radius: 4px 20px 4px 20px;
    margin: 28px 0;
    font-size: 0.95rem;
    color: var(--text-primary);
    box-shadow: 0 4px 14px rgba(6, 78, 59, 0.05);
}

.article-cta-box {
    background-color: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 34px 26px;
    margin: 40px 0;
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.article-cta-box h3 {
    font-size: 1.35rem;
    font-weight: 800;
    margin-bottom: 10px;
    color: var(--text-primary);
    border: none;
    padding: 0;
}

.article-cta-box p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.related-posts {
    margin-top: 56px;
    padding-top: 32px;
    border-top: 1px solid var(--border-color);
}

.related-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
    margin-top: 20px;
}

@media (min-width: 640px) {
    .related-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.related-card {
    background-color: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 18px;
    transition: all 0.25s ease;
}

.related-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.related-card h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 6px;
    line-height: 1.4;
}

.related-card span {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* 法律合规页面排版 */
.legal-content {
    max-width: 820px;
    margin: 0 auto;
    background-color: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 32px 24px;
    box-shadow: var(--shadow-sm);
}

@media (min-width: 768px) {
    .legal-content {
        padding: 48px;
    }
}

.legal-content h1 {
    font-size: 1.85rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.legal-content h2 {
    font-size: 1.35rem;
    font-weight: 700;
    margin: 32px 0 12px 0;
    color: var(--text-primary);
}

.legal-content p, .legal-content ul {
    margin-bottom: 16px;
    color: var(--text-secondary);
}

.legal-content ul {
    padding-left: 20px;
}

.legal-content li {
    margin-bottom: 8px;
}

.sitemap-group {
    margin-bottom: 32px;
}

.sitemap-group h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 14px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

.sitemap-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding-left: 8px;
}

.sitemap-links a {
    color: var(--text-primary);
    font-weight: 500;
}

.sitemap-links a:hover {
    color: var(--color-primary);
}

/* 支持 prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}