:root {
    --bg-deep: #0a0e17;
    --bg-card: #111827;
    --bg-card-hover: #1a2332;
    --accent: #00b4d8;
    --accent2: #0077b6;
    --accent-glow: #48cae4;
    --gold: #c9a84c;
    --gold-light: #e4c76b;
    --text: #e0e1e6;
    --text-secondary: #a8abb6;
    --text-muted: #7b7f8c;
    --border: #1e293b;
    --border-glow: #1a3a4a;
    --input-bg: #151d2b;
    --input-border: #2a3343;
    --input-focus: #00b4d8;
    --gradient-blue: linear-gradient(135deg, #0a1628 0%, #0f1f35 30%, #0a1830 60%, #0d1124 100%);
    --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
    --font-body: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
    --radius-sm: 6px;
    --radius: 10px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4), 0 1px 3px rgba(0, 180, 216, 0.06);
    --shadow-glow: 0 0 40px rgba(0, 180, 216, 0.15), 0 0 80px rgba(0, 119, 182, 0.08);
    --shadow-gold: 0 0 30px rgba(201, 168, 76, 0.12);
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background: var(--bg-deep);
    color: var(--text);
    line-height: 1.7;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============ 科技感背景层 ============ */
.bg-layer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

/* 网格线 - 建筑蓝图感 */
.bg-grid {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(0, 180, 216, 0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 180, 216, 0.025) 1px, transparent 1px);
    background-size: 48px 48px;
    background-position: center center;
    animation: gridShift 20s linear infinite;
}

@keyframes gridShift {
    0% {
        background-position: 0 0;
    }
    100% {
        background-position: 48px 48px;
    }
}

/* 大网格 */
.bg-grid-large {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(0, 180, 216, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 180, 216, 0.04) 1px, transparent 1px);
    background-size: 144px 144px;
    background-position: center;
}

/* 发光粒子 */
.particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}
.particle {
    position: absolute;
    border-radius: 50%;
    background: var(--accent);
    opacity: 0;
    animation: floatUp 8s ease-in infinite;
    pointer-events: none;
}
.particle:nth-child(1) {
    width: 2px;
    height: 2px;
    left: 15%;
    top: 70%;
    animation-delay: 0s;
}
.particle:nth-child(2) {
    width: 3px;
    height: 3px;
    left: 28%;
    top: 60%;
    animation-delay: 1.5s;
}
.particle:nth-child(3) {
    width: 1.5px;
    height: 1.5px;
    left: 55%;
    top: 75%;
    animation-delay: 3s;
}
.particle:nth-child(4) {
    width: 2.5px;
    height: 2.5px;
    left: 72%;
    top: 65%;
    animation-delay: 4.5s;
}
.particle:nth-child(5) {
    width: 1.8px;
    height: 1.8px;
    left: 85%;
    top: 55%;
    animation-delay: 6s;
}
.particle:nth-child(6) {
    width: 2px;
    height: 2px;
    left: 40%;
    top: 80%;
    animation-delay: 2s;
}
.particle:nth-child(7) {
    width: 3px;
    height: 3px;
    left: 90%;
    top: 70%;
    animation-delay: 5s;
}
.particle:nth-child(8) {
    width: 1.5px;
    height: 1.5px;
    left: 8%;
    top: 50%;
    animation-delay: 3.5s;
}
@keyframes floatUp {
    0% {
        transform: translateY(0) scale(1);
        opacity: 0;
    }
    10% {
        opacity: 0.7;
    }
    50% {
        opacity: 0.3;
    }
    100% {
        transform: translateY(-400px) scale(0.2);
        opacity: 0;
    }
}

/* 广州城市景观 */
.guangzhou-skyline {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 600px;
    pointer-events: none;
    overflow: hidden;
}

/* 广州塔 */
.canton-tower {
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 140px;
    height: 550px;
    z-index: 2;
    animation: cantonTowerGlow 10s ease-in-out infinite alternate;
}

.canton-tower svg {
    width: 100%;
    height: 100%;
    filter: drop-shadow(0 0 30px rgba(0, 180, 216, 0.3));
}

@keyframes cantonTowerGlow {
    0% {
        opacity: 0.7;
        transform: translateX(-50%) translateY(0);
        filter: drop-shadow(0 0 20px rgba(0, 180, 216, 0.2));
    }
    100% {
        opacity: 1;
        transform: translateX(-50%) translateY(-10px);
        filter: drop-shadow(0 0 40px rgba(0, 180, 216, 0.4));
    }
}

/* 广州城市建筑群 */
.city-buildings {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 450px;
    z-index: 1;
}

.city-buildings .building {
    position: absolute;
    bottom: 0;
    animation: buildingFloat 12s ease-in-out infinite alternate;
}

.city-buildings .building svg {
    width: 100%;
    height: 100%;
    filter: drop-shadow(0 0 20px rgba(0, 180, 216, 0.2));
}

/* 东塔 */
.building-east {
    width: 150px;
    height: 480px;
    left: 25%;
    transform: translateX(-50%);
    animation-delay: 0s;
}

/* 西塔 */
.building-west {
    width: 120px;
    height: 400px;
    right: 25%;
    transform: translateX(50%);
    animation-delay: 3s;
}

/* 其他建筑 */
.building-1 {
    width: 80px;
    height: 350px;
    left: 15%;
    animation-delay: 1.5s;
}

.building-2 {
    width: 100px;
    height: 400px;
    right: 15%;
    animation-delay: 4.5s;
}

@keyframes buildingFloat {
    0% {
        opacity: 0.6;
        transform: translateY(0);
        filter: drop-shadow(0 0 15px rgba(0, 180, 216, 0.15));
    }
    100% {
        opacity: 0.9;
        transform: translateY(-8px);
        filter: drop-shadow(0 0 30px rgba(0, 180, 216, 0.3));
    }
}

/* 建筑蓝图线条 */
.architectural-lines {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    opacity: 0.15;
    animation: blueprintFloat 15s ease-in-out infinite;
}

.architectural-lines svg {
    width: 100%;
    height: 100%;
    filter: drop-shadow(0 0 20px rgba(0, 180, 216, 0.3));
}

@keyframes blueprintFloat {
    0%, 100% {
        transform: translateY(0) scale(1);
        opacity: 0.15;
    }
    50% {
        transform: translateY(-10px) scale(1.02);
        opacity: 0.2;
    }
}

/* 光晕 */
.glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    pointer-events: none;
    animation: orbPulse 10s ease-in-out infinite;
}
.glow-orb.orb1 {
    width: 500px;
    height: 500px;
    background: rgba(0, 180, 216, 0.07);
    top: -150px;
    right: -100px;
    animation-delay: 0s;
}
.glow-orb.orb2 {
    width: 400px;
    height: 400px;
    background: rgba(0, 119, 182, 0.05);
    bottom: -100px;
    left: -80px;
    animation-delay: 4s;
}
.glow-orb.orb3 {
    width: 300px;
    height: 300px;
    background: rgba(201, 168, 76, 0.04);
    top: 40%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: 7s;
}
@keyframes orbPulse {
    0%,
    100% {
        transform: scale(1);
        opacity: 0.7;
    }
    50% {
        transform: scale(1.2);
        opacity: 1;
    }
}

/* ============ 主容器 ============ */
.main-container {
    position: relative;
    z-index: 1;
    max-width: 1300px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ============ 导航栏 ============ */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(10, 14, 23, 0.78);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(30, 41, 59, 0.6);
    padding: 0 24px;
    transition: var(--transition);
}
.navbar-inner {
    max-width: 1300px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
}
.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.3rem;
    letter-spacing: 0.5px;
}
.nav-logo .logo-icon {
    width: 38px;
    height: 38px;
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    font-size: 1.1rem;
    color: #fff;
    box-shadow: 0 0 20px rgba(0, 180, 216, 0.35);
    position: relative;
}
.nav-logo .logo-icon::after {
    content: '';
    position: absolute;
    inset: -3px;
    border-radius: 9px;
    border: 1px solid rgba(0, 180, 216, 0.3);
    animation: logoPulse 2.5s ease-in-out infinite;
}
@keyframes logoPulse {
    0%,
    100% {
        opacity: 0.4;
        transform: scale(1);
    }
    50% {
        opacity: 0.9;
        transform: scale(1.06);
    }
}
.nav-logo .logo-text-accent {
    color: var(--accent-glow);
}
.nav-cta {
    background: transparent;
    border: 1px solid var(--accent);
    color: var(--accent-glow);
    padding: 9px 20px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
    text-decoration: none;
    letter-spacing: 0.3px;
}
.nav-cta:hover {
    background: rgba(0, 180, 216, 0.1);
    box-shadow: 0 0 25px rgba(0, 180, 216, 0.2);
    border-color: var(--accent-glow);
}

/* ============ Hero区域 ============ */
.hero-section {
    padding: 60px 0 30px;
    text-align: center;
    position: relative;
}
.hero-badge {
    display: inline-block;
    background: rgba(0, 180, 216, 0.08);
    border: 1px solid rgba(0, 180, 216, 0.2);
    color: var(--accent-glow);
    padding: 6px 18px;
    border-radius: 20px;
    font-size: 0.85rem;
    letter-spacing: 1.5px;
    margin-bottom: 20px;
    backdrop-filter: blur(4px);
}
.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(2.2rem, 4.5vw, 3.5rem);
    font-weight: 800;
    line-height: 1.25;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
    background: linear-gradient(180deg, #ffffff 0%, #c8d6e5 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-title .highlight {
    background: linear-gradient(135deg, var(--accent-glow) 0%, #38bdf8 60%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}
.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 10px;
    letter-spacing: 0.3px;
}
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
    margin-top: 20px;
}
.hero-stat {
    text-align: center;
}
.hero-stat .stat-number {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--accent-glow);
    font-family: var(--font-heading);
    line-height: 1;
}
.hero-stat .stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    letter-spacing: 0.5px;
    margin-top: 4px;
}
.hero-stat .stat-plus {
    color: var(--gold-light);
    font-weight: 700;
}

/* ============ 服务卡片区域 ============ */
.services-section {
    padding: 30px 0 20px;
}
.section-label {
    text-align: center;
    color: var(--accent-glow);
    font-size: 0.8rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 6px;
    font-weight: 500;
}
.section-title {
    text-align: center;
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 28px;
    letter-spacing: 0.3px;
    color: #fff;
}
.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
    margin-bottom: 30px;
}
.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px 20px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    cursor: default;
    box-shadow: var(--shadow-card);
}
.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0;
    transition: var(--transition);
}
.service-card:hover {
    border-color: var(--border-glow);
    box-shadow: var(--shadow-glow), var(--shadow-card);
    transform: translateY(-2px);
    background: var(--bg-card-hover);
}
.service-card:hover::before {
    opacity: 1;
}
.service-card .card-icon {
    width: 42px;
    height: 42px;
    border-radius: var(--radius);
    background: rgba(0, 180, 216, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 14px;
    font-size: 1.3rem;
    color: var(--accent-glow);
    border: 1px solid rgba(0, 180, 216, 0.2);
}
.service-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 6px;
    color: #e8e9ef;
    letter-spacing: 0.3px;
}
.service-card p {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.6;
}
.service-card .card-tag {
    display: inline-block;
    background: rgba(201, 168, 76, 0.1);
    color: var(--gold-light);
    font-size: 0.7rem;
    padding: 3px 10px;
    border-radius: 12px;
    margin-top: 10px;
    letter-spacing: 0.5px;
    border: 1px solid rgba(201, 168, 76, 0.2);
}

/* ============ 公司简介 ============ */
.about-section {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 32px 30px 28px;
    box-shadow: var(--shadow-card);
    margin-bottom: 30px;
    position: relative;
    overflow: hidden;
}
.about-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent2), var(--accent), var(--accent-glow));
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}
.about-header {
    text-align: center;
    margin-bottom: 24px;
}
.about-badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 2px;
    color: var(--accent);
    background: rgba(0, 180, 216, 0.08);
    border: 1px solid rgba(0, 180, 216, 0.2);
    border-radius: 20px;
    padding: 4px 16px;
    margin-bottom: 12px;
}
.about-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 8px;
}
.about-tagline {
    font-size: 0.85rem;
    color: var(--text-muted);
    letter-spacing: 3px;
}
.about-body {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 30px;
    align-items: center;
    margin-bottom: 20px;
}
.about-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.8;
}
.about-desc p {
    margin-bottom: 10px;
}
.about-desc p:last-child {
    margin-bottom: 0;
}
.about-highlight {
    color: var(--accent-glow);
    font-weight: 600;
}
.about-stats {
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding-left: 28px;
    border-left: 1px solid var(--border);
    flex-shrink: 0;
}
.about-stat-item {
    text-align: center;
    padding: 8px 16px;
    background: rgba(0, 180, 216, 0.04);
    border-radius: var(--radius);
    border: 1px solid rgba(0, 180, 216, 0.1);
    min-width: 110px;
}
.about-stat-num {
    display: block;
    font-size: 1.5rem;
    font-weight: 800;
    color: #fff;
    font-family: var(--font-heading);
    line-height: 1.2;
}
.about-stat-suffix {
    font-size: 1rem;
    color: var(--accent);
}
.about-stat-label {
    display: block;
    font-size: 0.72rem;
    color: var(--text-muted);
    margin-top: 2px;
    letter-spacing: 1px;
}
.about-address {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    color: var(--text-muted);
    padding: 12px 16px;
    background: rgba(0, 180, 216, 0.03);
    border-radius: var(--radius);
    border: 1px solid var(--border);
}
.about-address-icon {
    font-size: 1rem;
    flex-shrink: 0;
}

@media (max-width: 900px) {
    .about-body {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    .about-stats {
        flex-direction: row;
        justify-content: center;
        padding-left: 0;
        padding-top: 18px;
        border-left: none;
        border-top: 1px solid var(--border);
    }
}
@media (max-width: 480px) {
    .about-section {
        padding: 24px 16px 20px;
    }
    .about-title {
        font-size: 1.25rem;
    }
    .about-stat-item {
        min-width: 90px;
        padding: 6px 10px;
    }
    .about-stat-num {
        font-size: 1.2rem;
    }
}

/* ============ 底部双栏：表单 + 信息 ============ */
.bottom-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    padding: 30px 0 50px;
    align-items: stretch;
}

/* 左侧信息 */
.info-panel {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 30px 28px;
    box-shadow: var(--shadow-card);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}
.info-panel::after {
    content: '';
    position: absolute;
    top: -40px;
    right: -40px;
    width: 150px;
    height: 150px;
    border-radius: 50%;
    border: 1px solid rgba(0, 180, 216, 0.08);
    pointer-events: none;
}
.info-panel .info-title {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 6px;
    color: #fff;
}
.info-panel .info-subtitle {
    color: var(--accent-glow);
    font-size: 0.85rem;
    letter-spacing: 1px;
    margin-bottom: 20px;
}
.info-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex: 1;
}
.info-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
    padding: 10px 12px;
    border-radius: var(--radius);
    transition: var(--transition);
    border-left: 2px solid transparent;
}
.info-list li:hover {
    background: rgba(0, 180, 216, 0.03);
    border-left-color: var(--accent);
    color: #d0d3db;
}
.info-list li .li-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--accent);
    flex-shrink: 0;
    margin-top: 6px;
    box-shadow: 0 0 8px rgba(0, 180, 216, 0.5);
}
.info-highlight-box {
    margin-top: auto;
    background: rgba(0, 180, 216, 0.04);
    border: 1px solid rgba(0, 180, 216, 0.15);
    border-radius: var(--radius);
    padding: 16px 18px;
    display: flex;
    align-items: center;
    gap: 12px;
}
.info-highlight-box .highlight-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent2), var(--accent));
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: #fff;
    font-size: 0.9rem;
    flex-shrink: 0;
}
.info-highlight-box .highlight-text strong {
    color: #fff;
    font-size: 0.95rem;
}
.info-highlight-box .highlight-text span {
    color: var(--text-muted);
    font-size: 0.8rem;
}
.info-highlight-box .wechat-card-img {
    height: 60px;
    width: auto;
    margin-left: auto;
    border-radius: 6px;
    border: 1px solid var(--border);
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    flex-shrink: 0;
    object-fit: contain;
}
.info-highlight-box .wechat-card-img:hover {
    transform: scale(1.05);
    box-shadow: 0 2px 12px rgba(0,180,216,0.2);
}
.wechat-preview-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.7);
    z-index: 9999;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    animation: overlayFadeIn 0.2s ease;
}
.wechat-preview-overlay.active {
    display: flex;
}
.wechat-preview-overlay img {
    max-width: 90vw;
    max-height: 85vh;
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 40px rgba(0,0,0,0.4);
    animation: imgZoomIn 0.25s ease;
}
@keyframes overlayFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
@keyframes imgZoomIn {
    from { transform: scale(0.85); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

/* 右侧表单 */
.form-panel {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 30px 28px;
    box-shadow: var(--shadow-card);
    position: relative;
    overflow: hidden;
}
.form-panel::before {
    content: '';
    position: absolute;
    top: -60px;
    left: -60px;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    border: 1px solid rgba(0, 180, 216, 0.06);
    pointer-events: none;
}
.form-panel .form-title {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 4px;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 8px;
}
.form-panel .form-title .form-badge {
    font-size: 0.7rem;
    background: rgba(0, 180, 216, 0.15);
    color: var(--accent-glow);
    padding: 3px 10px;
    border-radius: 12px;
    letter-spacing: 1px;
    font-weight: 500;
}
.form-panel .form-subtitle {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: 22px;
}
.form-group {
    margin-bottom: 16px;
}
.form-group label {
    display: block;
    font-size: 0.82rem;
    color: var(--text-secondary);
    margin-bottom: 6px;
    letter-spacing: 0.3px;
    font-weight: 500;
}
.form-group label .required {
    color: #e74c3c;
    margin-left: 2px;
}
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: var(--radius);
    color: #e0e1e6;
    font-size: 0.9rem;
    font-family: var(--font-body);
    transition: var(--transition);
    outline: none;
    letter-spacing: 0.3px;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--input-focus);
    box-shadow: 0 0 0 3px rgba(0, 180, 216, 0.1), 0 0 20px rgba(0, 180, 216, 0.08);
    background: #181f2d;
}
.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #5a6070;
}
.form-group select {
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M6 8L1 3h10z' fill='%237b7f8c'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 40px;
    cursor: pointer;
}
.form-group select option {
    background: var(--bg-card);
    color: #e0e1e6;
    padding: 10px;
}
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}
.btn-submit {
    width: 100%;
    padding: 13px 20px;
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    border: none;
    border-radius: var(--radius);
    color: #fff;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    letter-spacing: 1px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    font-family: var(--font-heading);
    box-shadow: 0 4px 20px rgba(0, 180, 216, 0.25);
}
.btn-submit:hover {
    box-shadow: 0 6px 30px rgba(0, 180, 216, 0.4);
    transform: translateY(-1px);
    background: linear-gradient(135deg, #00c6e8, #0088c8);
}
.btn-submit:active {
    transform: scale(0.98);
}
.btn-submit .btn-shimmer {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
    animation: shimmer 2.5s infinite;
}
@keyframes shimmer {
    0% {
        left: -100%;
    }
    100% {
        left: 100%;
    }
}
.form-note {
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 10px;
    letter-spacing: 0.3px;
}

/* Toast消息 */
.toast {
    position: fixed;
    top: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(-200%);
    opacity: 0;
    visibility: hidden;
    background: #0d2818;
    border: 1px solid #2ecc71;
    color: #2ecc71;
    padding: 14px 28px;
    border-radius: 30px;
    font-weight: 600;
    z-index: 9999;
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275),
                opacity 0.4s ease,
                visibility 0.4s ease;
    box-shadow: 0 8px 30px rgba(46, 204, 113, 0.2);
    letter-spacing: 0.5px;
    max-width: 90vw;
    white-space: normal;
    text-align: center;
    word-break: break-word;
}
.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
    visibility: visible;
}
@media (max-width: 480px) {
    .toast {
        top: 16px;
        padding: 10px 16px;
        font-size: 0.82rem;
        border-radius: 20px;
        max-width: 88vw;
    }
}

/* 页脚 */
.footer {
    text-align: center;
    padding: 20px 0 30px;
    color: var(--text-muted);
    font-size: 0.78rem;
    letter-spacing: 0.5px;
    border-top: 1px solid var(--border);
    margin-top: 10px;
}
.footer .footer-brand {
    color: var(--accent-glow);
    font-weight: 600;
}
.footer .icp-link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.7rem;
    margin-top: 8px;
    display: inline-block;
    transition: color var(--transition);
}
.footer .icp-link:hover {
    color: var(--accent);
    text-decoration: underline;
}

/* ============ 响应式 ============ */
@media (max-width: 900px) {
    .bottom-section {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    .hero-stats {
        gap: 20px;
    }
    .hero-stat .stat-number {
        font-size: 1.6rem;
    }
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    .form-row {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    .navbar-inner {
        height: 52px;
    }
    .nav-logo {
        font-size: 1.1rem;
    }
    .nav-logo .logo-icon {
        width: 30px;
        height: 30px;
        font-size: 0.9rem;
    }
    .hero-title {
        font-size: 1.8rem;
    }
    .section-title {
        font-size: 1.4rem;
    }
}
@media (max-width: 480px) {
    .main-container {
        padding: 0 12px;
    }
    .hero-section {
        padding: 40px 0 20px;
    }
    .hero-stats {
        gap: 14px;
    }
    .hero-stat .stat-number {
        font-size: 1.3rem;
    }
    .services-grid {
        grid-template-columns: 1fr 1fr;
        gap: 8px;
    }
    .service-card {
        padding: 16px 12px;
    }
    .service-card h3 {
        font-size: 0.9rem;
    }
    .service-card p {
        font-size: 0.75rem;
    }
    .info-panel,
    .form-panel {
        padding: 20px 16px;
    }
}