/* =============================================
   诺聚传媒 NUOJU MEDIA - 主样式
   设计系统：紫橙双色 · 现代专业
   ============================================= */

/* === 设计变量 === */
:root {
    /* 主色 - 深紫蓝（来自logo） */
    --primary: #1A1B5C;
    --primary-light: #2D2A6E;
    --primary-deep: #0F0F3D;

    /* 辅色 - 紫色（logo 渐变） */
    --purple: #4B1D7C;
    --purple-light: #6B2DA0;

    /* 强调 - 橙色（logo 箭头） */
    --accent: #F5A623;
    --accent-light: #F7C948;
    --accent-deep: #E89216;

    /* 中性色 */
    --bg: #FFFFFF;
    --bg-soft: #F7F7FA;
    --bg-dark: #0A0A2E;
    --text: #1D1D1F;
    --text-soft: #4A4A52;
    --text-light: #8A8A92;
    --border: #E8E8EC;

    /* 渐变 */
    --grad-primary: linear-gradient(135deg, #1A1B5C 0%, #4B1D7C 100%);
    --grad-accent: linear-gradient(135deg, #F5A623 0%, #F7C948 100%);
    --grad-mix: linear-gradient(135deg, #1A1B5C 0%, #4B1D7C 50%, #F5A623 100%);

    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(26, 27, 92, 0.06);
    --shadow-md: 0 8px 24px rgba(26, 27, 92, 0.1);
    --shadow-lg: 0 20px 60px rgba(26, 27, 92, 0.15);
    --shadow-accent: 0 12px 32px rgba(245, 166, 35, 0.25);

    /* 字体 */
    --font-cn: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'PingFang SC', sans-serif;
    --font-en: 'Inter', -apple-system, sans-serif;

    /* 圆角 */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;

    /* 过渡 */
    --t-fast: 0.2s ease;
    --t-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --t-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* === 基础重置 === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-cn);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg);
    overflow-x: hidden;
}

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

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--t-fast);
}

ul {
    list-style: none;
}

button {
    border: none;
    background: none;
    font-family: inherit;
    cursor: pointer;
}

input, select, textarea {
    font-family: inherit;
    font-size: inherit;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 32px;
}

.section {
    padding: 120px 0;
    position: relative;
}

/* === 按钮 === */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: 100px;
    font-size: 15px;
    font-weight: 500;
    letter-spacing: 0.02em;
    transition: all var(--t-base);
    cursor: pointer;
    white-space: nowrap;
}

.btn-primary {
    background: var(--grad-primary);
    color: #fff;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, #2D2A6E 0%, #6B2DA0 100%);
}

.btn-primary svg {
    transition: transform var(--t-base);
}

.btn-primary:hover svg {
    transform: translateX(4px);
}

.btn-ghost {
    background: transparent;
    color: var(--primary);
    border: 1.5px solid var(--border);
}

.btn-ghost:hover {
    border-color: var(--primary);
    background: var(--bg-soft);
}

/* === 导航 === */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 18px 0;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    transition: all var(--t-base);
    border-bottom: 1px solid transparent;
}

.navbar.scrolled {
    padding: 12px 0;
    background: rgba(255, 255, 255, 0.95);
    border-bottom-color: var(--border);
    box-shadow: var(--shadow-sm);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
}

.logo-link {
    flex-shrink: 0;
}

.logo-img {
    height: 44px;
    width: auto;
    transition: transform var(--t-base);
}

.logo-img:hover {
    transform: scale(1.03);
}

.nav-menu {
    display: flex;
    gap: 4px;
    align-items: center;
}

.nav-link {
    position: relative;
    padding: 8px 16px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-soft);
    transition: color var(--t-fast);
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--grad-accent);
    transition: width var(--t-base);
    border-radius: 2px;
}

.nav-link:hover::after, .nav-link.active::after {
    width: 24px;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.lang-tag {
    font-family: var(--font-en);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.1em;
    color: var(--text-light);
    padding: 4px 10px;
    border: 1px solid var(--border);
    border-radius: 100px;
}

.menu-toggle {
    display: none;
    width: 36px;
    height: 36px;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 4px;
}

.menu-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
    transition: all var(--t-base);
}

.menu-toggle.open span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}

.menu-toggle.open span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.open span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}

/* === Hero === */
.hero {
    position: relative;
    min-height: 100vh;
    padding: 140px 0 80px;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: linear-gradient(180deg, #FAFAFC 0%, #FFFFFF 100%);
}

.hero-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

.hero-shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
}

.shape-1 {
    width: 480px;
    height: 480px;
    top: -120px;
    right: -100px;
    background: var(--accent);
    animation: float 12s ease-in-out infinite;
}

.shape-2 {
    width: 380px;
    height: 380px;
    bottom: -80px;
    left: -100px;
    background: var(--purple);
    animation: float 14s ease-in-out infinite reverse;
}

.shape-3 {
    width: 300px;
    height: 300px;
    top: 40%;
    left: 40%;
    background: var(--primary);
    opacity: 0.2;
    animation: float 16s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(40px, -30px) scale(1.05); }
    66% { transform: translate(-30px, 40px) scale(0.95); }
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(26, 27, 92, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(26, 27, 92, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
}

.hero-content {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 80px;
    align-items: center;
}

.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(26, 27, 92, 0.05);
    border: 1px solid rgba(26, 27, 92, 0.1);
    border-radius: 100px;
    font-family: var(--font-en);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.15em;
    color: var(--primary);
    margin-bottom: 28px;
}

.tag-dot {
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 0 4px rgba(245, 166, 35, 0.2);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 4px rgba(245, 166, 35, 0.2); }
    50% { box-shadow: 0 0 0 8px rgba(245, 166, 35, 0); }
}

.hero-title {
    font-size: clamp(40px, 5.5vw, 76px);
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -0.02em;
    color: var(--primary);
    margin-bottom: 28px;
}

.title-line {
    display: block;
}

.title-accent {
    background: var(--grad-mix);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

.hero-subtitle {
    font-size: 17px;
    line-height: 1.8;
    color: var(--text-soft);
    margin-bottom: 40px;
    max-width: 540px;
}

.hero-subtitle strong {
    color: var(--primary);
    font-weight: 600;
}

.hero-cta {
    display: flex;
    gap: 16px;
    margin-bottom: 64px;
    flex-wrap: wrap;
}

/* Hero 视觉区 */
.hero-visual {
    position: relative;
    height: 540px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.visual-card {
    position: absolute;
    border-radius: var(--radius-lg);
    background: #fff;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--t-slow);
}

.card-main {
    width: 320px;
    height: 320px;
    background: var(--grad-primary);
    padding: 60px;
    animation: floatMain 8s ease-in-out infinite;
    z-index: 2;
    position: relative;
}

.card-main::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-lg);
    background: var(--grad-mix);
    opacity: 0;
    transition: opacity var(--t-slow);
    z-index: -1;
}

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

.card-main img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: #fff;
    border-radius: 16px;
    padding: 20px;
}

@keyframes floatMain {
    0%, 100% { transform: translateY(0) rotate(0); }
    50% { transform: translateY(-20px) rotate(2deg); }
}

.card-float {
    width: 110px;
    height: 110px;
    flex-direction: column;
    gap: 8px;
    font-family: var(--font-en);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--primary);
    z-index: 3;
}

.card-1 {
    top: 8%;
    right: 0;
    background: var(--grad-accent);
    color: var(--primary);
    animation: floatCard 6s ease-in-out infinite;
}

.card-2 {
    bottom: 10%;
    left: 0;
    animation: floatCard 7s ease-in-out infinite 0.5s;
}

.card-3 {
    top: 50%;
    right: 5%;
    background: var(--primary);
    color: #fff;
    animation: floatCard 8s ease-in-out infinite 1s;
}

.card-3 .float-icon {
    color: var(--accent);
}

@keyframes floatCard {
    0%, 100% { transform: translateY(0) rotate(-4deg); }
    50% { transform: translateY(-15px) rotate(4deg); }
}

.float-icon {
    font-size: 32px;
    line-height: 1;
    color: var(--primary);
}

.scroll-hint {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    font-family: var(--font-en);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.2em;
    color: var(--text-light);
    z-index: 2;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(180deg, var(--primary) 0%, transparent 100%);
    animation: scrollDown 2s ease-in-out infinite;
}

@keyframes scrollDown {
    0% { transform: scaleY(0); transform-origin: top; }
    50% { transform: scaleY(1); transform-origin: top; }
    51% { transform: scaleY(1); transform-origin: bottom; }
    100% { transform: scaleY(0); transform-origin: bottom; }
}

/* === Section 通用 === */
.section-head {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 80px;
}

.section-eyebrow {
    display: inline-block;
    font-family: var(--font-en);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.2em;
    color: var(--accent-deep);
    margin-bottom: 16px;
    padding: 4px 0;
    position: relative;
}

.section-eyebrow::before, .section-eyebrow::after {
    content: '';
    display: inline-block;
    width: 24px;
    height: 1px;
    background: var(--accent);
    vertical-align: middle;
    margin: 0 12px;
}

.section-eyebrow.light {
    color: var(--accent-light);
}

.section-eyebrow.light::before, .section-eyebrow.light::after {
    background: var(--accent-light);
}

.section-title {
    font-size: clamp(32px, 4vw, 48px);
    font-weight: 800;
    line-height: 1.2;
    color: var(--primary);
    margin-bottom: 20px;
    letter-spacing: -0.01em;
}

.section-desc {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-soft);
}

.section-desc strong {
    color: var(--primary);
    font-weight: 600;
}

/* === About === */
.about {
    background: var(--bg-soft);
}

.about-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 20px;
    min-height: 540px;
}

.about-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 36px;
    border: 1px solid var(--border);
    transition: all var(--t-base);
}

.about-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: rgba(245, 166, 35, 0.3);
}

.about-main {
    grid-row: 1 / 3;
    background: var(--grad-primary);
    color: #fff;
    border: none;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
}

.about-main::before {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    background: var(--accent);
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
    bottom: -100px;
    right: -100px;
}

.about-main:hover {
    transform: translateY(-4px);
}

.about-quote {
    position: relative;
    z-index: 1;
}

.quote-mark {
    font-family: var(--font-en);
    font-size: 80px;
    line-height: 0.5;
    color: var(--accent);
    margin-bottom: 12px;
    font-weight: 800;
}

.about-quote p {
    font-size: 20px;
    line-height: 1.7;
    font-weight: 400;
}

.about-quote strong {
    color: var(--accent);
    font-weight: 700;
}

.about-meta {
    position: relative;
    z-index: 1;
    display: flex;
    gap: 32px;
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    flex-wrap: wrap;
}

.meta-label {
    font-family: var(--font-en);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.15em;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 6px;
    text-transform: uppercase;
}

.meta-value {
    font-size: 16px;
    font-weight: 600;
    color: #fff;
}

.about-side {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.side-num {
    font-family: var(--font-en);
    font-size: 32px;
    font-weight: 800;
    color: var(--accent);
    line-height: 1;
    margin-bottom: 16px;
}

.about-side h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 12px;
}

.about-side p {
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-soft);
}

/* === Services === */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.service-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    transition: all var(--t-base);
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--grad-mix);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--t-base);
}

.service-card:hover {
    transform: translateY(-8px);
    border-color: transparent;
    box-shadow: var(--shadow-lg);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-num {
    font-family: var(--font-en);
    font-size: 14px;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 0.1em;
    margin-bottom: 24px;
}

.service-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, rgba(26, 27, 92, 0.05) 0%, rgba(75, 29, 124, 0.08) 100%);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    transition: all var(--t-base);
}

.service-card:hover .service-icon {
    background: var(--grad-primary);
    color: var(--accent);
    transform: rotate(-5deg) scale(1.05);
}

.service-icon svg {
    width: 32px;
    height: 32px;
}

.service-card h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 12px;
}

.service-card > p {
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-soft);
    margin-bottom: 20px;
}

.service-list {
    padding-top: 20px;
    border-top: 1px solid var(--border);
}

.service-list li {
    font-size: 13px;
    color: var(--text-soft);
    padding: 6px 0 6px 18px;
    position: relative;
}

.service-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 14px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
}

/* === Process === */
.process {
    background: var(--bg-soft);
    position: relative;
    overflow: hidden;
}

.process::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, var(--border) 20%, var(--border) 80%, transparent 100%);
}

.process-timeline {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    position: relative;
}

.process-step {
    text-align: center;
    position: relative;
}

.step-circle {
    width: 88px;
    height: 88px;
    margin: 0 auto 28px;
    background: #fff;
    border: 2px solid var(--border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-en);
    font-size: 24px;
    font-weight: 800;
    color: var(--primary);
    position: relative;
    transition: all var(--t-base);
    box-shadow: 0 0 0 8px var(--bg-soft);
}

.step-circle::after {
    content: '';
    position: absolute;
    inset: -10px;
    border: 2px dashed var(--accent);
    border-radius: 50%;
    opacity: 0;
    transition: opacity var(--t-base);
    animation: rotate 20s linear infinite;
}

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

.process-step:hover .step-circle {
    background: var(--grad-primary);
    color: var(--accent);
    border-color: var(--primary);
    transform: scale(1.05);
}

.process-step:hover .step-circle::after {
    opacity: 0.5;
}

.step-content h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 12px;
}

.step-content p {
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-soft);
    margin-bottom: 16px;
}

.step-tags {
    display: flex;
    gap: 6px;
    justify-content: center;
    flex-wrap: wrap;
}

.step-tags span {
    font-size: 12px;
    color: var(--primary);
    background: rgba(26, 27, 92, 0.06);
    padding: 4px 10px;
    border-radius: 100px;
}

/* === Cases === */
.cases-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 24px;
    min-height: 720px;
}

.case-card {
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border);
    transition: all var(--t-base);
    cursor: pointer;
    display: flex;
    flex-direction: column;
}

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

.case-large {
    grid-row: 1 / 3;
}

.case-visual {
    flex: 1;
    position: relative;
    overflow: hidden;
    min-height: 200px;
}

.case-1 {
    background: linear-gradient(135deg, #1A1B5C 0%, #4B1D7C 60%, #F5A623 100%);
    min-height: 100%;
    flex: 1;
}

.case-1::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60%;
    height: 60%;
    background:
        radial-gradient(circle at 30% 40%, rgba(255,255,255,0.15) 0%, transparent 50%),
        radial-gradient(circle at 70% 60%, rgba(245,166,35,0.2) 0%, transparent 50%);
    border-radius: 50%;
    animation: pulse 4s ease-in-out infinite;
}

.case-2 {
    background: linear-gradient(135deg, #F5A623 0%, #F7C948 100%);
    position: relative;
}

.case-2::before {
    content: '◆';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 80px;
    color: rgba(26, 27, 92, 0.4);
}

.case-3 {
    background: linear-gradient(135deg, #4B1D7C 0%, #1A1B5C 100%);
    position: relative;
}

.case-3::before {
    content: '●';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 80px;
    color: rgba(245, 166, 35, 0.5);
}

.case-4 {
    background: linear-gradient(135deg, #0F0F3D 0%, #2D2A6E 100%);
    position: relative;
}

.case-4::before {
    content: '</>';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-family: var(--font-en);
    font-size: 48px;
    font-weight: 800;
    color: rgba(245, 166, 35, 0.6);
}

.case-5 {
    background: linear-gradient(135deg, #FFFFFF 0%, #F7F7FA 100%);
    position: relative;
    border-bottom: 1px solid var(--border);
}

.case-5::before {
    content: '▤';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 80px;
    color: rgba(26, 27, 92, 0.3);
}

.case-badge {
    position: absolute;
    top: 20px;
    left: 20px;
    background: rgba(255, 255, 255, 0.95);
    color: var(--primary);
    font-family: var(--font-en);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.1em;
    padding: 6px 12px;
    border-radius: 100px;
    z-index: 2;
    backdrop-filter: blur(8px);
}

.case-info {
    padding: 24px;
}

.case-meta {
    display: flex;
    justify-content: space-between;
    font-family: var(--font-en);
    font-size: 12px;
    color: var(--text-light);
    margin-bottom: 12px;
    letter-spacing: 0.05em;
}

.case-info h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
    line-height: 1.4;
}

.case-large .case-info h3 {
    font-size: 24px;
}

.case-info p {
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-soft);
}

.case-large .case-info p {
    font-size: 15px;
    line-height: 1.7;
}

/* === Contact === */
.contact {
    background: var(--bg-dark);
    background-image:
        radial-gradient(circle at 80% 20%, rgba(75, 29, 124, 0.4) 0%, transparent 50%),
        radial-gradient(circle at 20% 80%, rgba(245, 166, 35, 0.15) 0%, transparent 50%);
    color: #fff;
    position: relative;
    overflow: hidden;
}

.contact::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
}

.contact-wrap {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 80px;
    align-items: start;
    position: relative;
    z-index: 1;
}

.contact-title {
    font-size: clamp(36px, 4.5vw, 56px);
    font-weight: 800;
    line-height: 1.2;
    color: #fff;
    margin: 20px 0 24px;
    letter-spacing: -0.01em;
}

.contact-desc {
    font-size: 16px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 48px;
}

.contact-items {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 20px;
}

.contact-icon {
    width: 52px;
    height: 52px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: var(--accent);
    flex-shrink: 0;
}

.contact-label {
    font-family: var(--font-en);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.15em;
    color: rgba(255, 255, 255, 0.5);
    text-transform: uppercase;
    margin-bottom: 4px;
}

.contact-value {
    font-size: 16px;
    font-weight: 500;
    color: #fff;
}

/* === Footer === */
.footer {
    background: #050518;
    color: rgba(255, 255, 255, 0.7);
    padding: 80px 0 32px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 64px;
    margin-bottom: 64px;
}

.footer-logo {
    height: 56px;
    width: auto;
    margin-bottom: 20px;
    background: #fff;
    border-radius: 12px;
    padding: 8px;
}

.footer-brand p {
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 8px;
}

.footer-tagline {
    color: var(--accent);
    font-weight: 500;
    font-size: 14px;
    margin-top: 12px;
}

.footer-col h4 {
    font-size: 15px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 20px;
    letter-spacing: 0.02em;
}

.footer-col ul li {
    font-size: 14px;
    padding: 6px 0;
    color: rgba(255, 255, 255, 0.6);
    transition: color var(--t-fast);
}

.footer-col ul li a:hover {
    color: var(--accent);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    font-size: 13px;
    color: rgba(255, 255, 255, 0.4);
    flex-wrap: wrap;
    gap: 16px;
}

.footer-icp {
    font-family: var(--font-en);
    letter-spacing: 0.05em;
}

/* === 滚动动画 === */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* === 响应式 === */
@media (max-width: 1024px) {
    .container { padding: 0 24px; }
    .section { padding: 80px 0; }

    .hero-content {
        grid-template-columns: 1fr;
        gap: 60px;
    }

    .hero-visual {
        height: 400px;
    }

    .card-main { width: 260px; height: 260px; padding: 50px; }

    .about-grid {
        grid-template-columns: 1fr 1fr;
        grid-template-rows: auto auto auto;
    }

    .about-main { grid-row: auto; }

    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .process-timeline {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px 32px;
    }

    .process::before { display: none; }

    .cases-grid {
        grid-template-columns: 1fr 1fr;
        grid-template-rows: auto;
        min-height: auto;
    }

    .case-large { grid-row: auto; grid-column: 1 / 3; }
    .case-large .case-visual { min-height: 280px; }

    .contact-wrap {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        right: 0;
        bottom: 0;
        width: 280px;
        background: #fff;
        flex-direction: column;
        align-items: flex-start;
        padding: 32px 24px;
        gap: 0;
        transform: translateX(100%);
        transition: transform var(--t-base);
        border-left: 1px solid var(--border);
        box-shadow: var(--shadow-lg);
    }

    .nav-menu.open { transform: translateX(0); }

    .nav-link {
        width: 100%;
        padding: 14px 0;
        border-bottom: 1px solid var(--border);
        font-size: 16px;
    }

    .menu-toggle { display: flex; }

    .lang-tag { display: none; }

    .hero { padding: 120px 0 60px; }

    .hero-visual { height: 320px; }
    .card-main { width: 200px; height: 200px; padding: 40px; }
    .card-float { width: 80px; height: 80px; font-size: 11px; }
    .float-icon { font-size: 24px; }

    .about-grid {
        grid-template-columns: 1fr;
    }

    .about-meta { gap: 20px; }
    .meta-item { flex: 1; min-width: 120px; }

    .services-grid { grid-template-columns: 1fr; }

    .process-timeline { grid-template-columns: 1fr; }

    .cases-grid { grid-template-columns: 1fr; }
    .case-large { grid-column: auto; }

    .footer-grid { grid-template-columns: 1fr; gap: 32px; }

    .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
    .container { padding: 0 20px; }
    .section { padding: 60px 0; }

    .hero-title { font-size: 36px; }
    .hero-subtitle { font-size: 15px; }

    .hero-cta { flex-direction: column; width: 100%; }
    .btn { width: 100%; justify-content: center; }

    .contact-item { gap: 14px; }
    .contact-icon { width: 44px; height: 44px; font-size: 18px; }
}