/* 橙色复古风色调 */
:root {
    --orange-cream: #FFF5E6;
    --orange-light: #FFE4B5;
    --orange-sand: #FFD39B;
    --orange-medium: #FFA726;
    --orange-dark: #FF8C00;
    --orange-burnt: #FF6B35;
    --orange-deep: #E65100;
    --orange-peach: #FFDAB9;
    --orange-accent: #FF9F40;
    --orange-text: #4A2C2A;
    --retro-teal: #5DADE2;
    --retro-mustard: #F4D03F;
    --shadow-light: rgba(255, 255, 255, 0.95);
    --shadow-dark: rgba(255, 107, 53, 0.15);
}

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@100..900&display=swap');

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-variation-settings: 'wght' 400;
}

html {
    scroll-behavior: smooth;
    height: 100%;
    width: 100%;
}

body {
    background: linear-gradient(135deg, var(--orange-cream) 0%, var(--orange-peach) 100%);
    color: var(--orange-text);
    overflow-x: hidden;
    line-height: 1.6;
}

/* 新拟态导航栏 - 无边界画布 */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 30px 0;
    background: rgba(255, 245, 230, 0.85);
    backdrop-filter: blur(20px);
    box-shadow: 0 8px 32px var(--shadow-dark);
    border-bottom: 1px solid rgba(255, 107, 53, 0.1);
}

.nav-container {
    width: 100%;
    margin: 0;
    padding: 0 5vw;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 24px;
    font-weight: 800;
    color: var(--orange-deep);
    text-decoration: none;
    display: flex;
    align-items: center;
    padding: 12px 24px;
    border-radius: 50px;
    background: var(--orange-cream);
    box-shadow: 8px 8px 16px var(--shadow-dark),
                -8px -8px 16px var(--shadow-light);
}

.logo span {
    color: var(--orange-burnt);
}

.logo i {
    margin-right: 10px;
    font-size: 28px;
    color: var(--orange-accent);
}

nav ul {
    display: flex;
    list-style: none;
    gap: 15px;
}

nav ul li a {
    text-decoration: none;
    color: var(--orange-text);
    font-variation-settings: 'wght' 600;
    padding: 12px 24px;
    border-radius: 25px;
    background: var(--orange-cream);
    box-shadow: 6px 6px 12px var(--shadow-dark),
                -6px -6px 12px var(--shadow-light);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: block;
    transform-style: preserve-3d;
}

nav ul li a:hover,
nav ul li a.active {
    box-shadow: inset 4px 4px 8px var(--shadow-dark),
                inset -4px -4px 8px var(--shadow-light);
    color: var(--orange-burnt);
    font-variation-settings: 'wght' 700;
    transform: translateZ(5px);
    background: linear-gradient(135deg, var(--orange-light), var(--orange-peach));
}

/* 边栏 - 拟物化果冻按钮 */
.sidebar-toggle {
    display: none;
    background: linear-gradient(180deg, rgba(255, 211, 155, 0.9) 0%, rgba(255, 167, 38, 0.85) 50%, rgba(255, 140, 0, 0.9) 100%);
    border: 2px solid rgba(230, 81, 0, 0.6);
    font-size: 24px;
    cursor: pointer;
    color: white;
    padding: 12px 20px;
    border-radius: 15px;
    box-shadow: 
        0 6px 0 rgba(216, 67, 21, 0.7),
        0 8px 4px rgba(0, 0, 0, 0.25),
        inset 0 2px 0 rgba(255, 255, 255, 0.4),
        inset 0 -2px 6px rgba(0, 0, 0, 0.15);
    position: relative;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    transition: all 0.2s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    backdrop-filter: blur(10px);
}

.sidebar-toggle::before {
    content: '';
    position: absolute;
    top: -1px;
    left: 15%;
    right: 15%;
    height: 3px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.7), transparent);
    border-radius: 50%;
    filter: blur(1px);
}

.sidebar-toggle::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.3), transparent 50%);
    border-radius: 15px;
    pointer-events: none;
}

.sidebar-toggle:hover {
    background: linear-gradient(180deg, rgba(255, 228, 181, 0.95) 0%, rgba(255, 183, 77, 0.9) 50%, rgba(255, 152, 0, 0.95) 100%);
    transform: translateY(2px) scale(1.05);
    box-shadow: 
        0 4px 0 rgba(216, 67, 21, 0.7),
        0 6px 3px rgba(0, 0, 0, 0.2),
        inset 0 2px 0 rgba(255, 255, 255, 0.5),
        inset 0 -2px 6px rgba(0, 0, 0, 0.1);
    animation: jelly 0.5s ease-in-out;
}

.sidebar-toggle:active {
    transform: translateY(6px) scale(0.98);
    box-shadow: 
        0 0 0 rgba(216, 67, 21, 0.7),
        0 2px 2px rgba(0, 0, 0, 0.15),
        inset 0 2px 4px rgba(0, 0, 0, 0.25);
    animation: jellySquish 0.3s ease-in-out;
}

@keyframes jelly {
    0%, 100% { transform: translateY(2px) scale(1.05); }
    25% { transform: translateY(2px) scale(1.08, 0.95); }
    50% { transform: translateY(2px) scale(0.95, 1.08); }
    75% { transform: translateY(2px) scale(1.05, 0.98); }
}

@keyframes jellySquish {
    0%, 100% { transform: translateY(6px) scale(0.98); }
    50% { transform: translateY(6px) scale(1.02, 0.92); }
}

.sidebar {
    position: fixed;
    top: 0;
    right: -320px;
    width: 320px;
    height: 100%;
    background: linear-gradient(180deg, var(--orange-cream) 0%, var(--orange-light) 100%);
    box-shadow: -5px 0 25px var(--shadow-dark);
    transition: all 0.4s ease;
    z-index: 1001;
    padding: 80px 30px 30px;
}

.sidebar.active {
    right: 0;
}

.sidebar-close {
    position: absolute;
    top: 25px;
    right: 25px;
    background: linear-gradient(180deg, rgba(255, 159, 64, 0.9) 0%, rgba(255, 107, 53, 0.85) 50%, rgba(230, 81, 0, 0.9) 100%);
    border: 2px solid rgba(191, 54, 12, 0.6);
    font-size: 24px;
    cursor: pointer;
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    box-shadow: 
        0 6px 0 rgba(191, 54, 12, 0.7),
        0 8px 4px rgba(0, 0, 0, 0.3),
        inset 0 2px 0 rgba(255, 255, 255, 0.4),
        inset 0 -2px 6px rgba(0, 0, 0, 0.2);
    position: relative;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
    transition: all 0.2s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
}

.sidebar-close::before {
    content: '';
    position: absolute;
    top: -1px;
    left: 20%;
    right: 20%;
    height: 4px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.7), transparent);
    border-radius: 50%;
    filter: blur(1px);
}

.sidebar-close::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 35% 35%, rgba(255, 255, 255, 0.35), transparent 60%);
    border-radius: 50%;
    pointer-events: none;
}

.sidebar-close:hover {
    background: linear-gradient(180deg, rgba(255, 183, 77, 0.95) 0%, rgba(255, 112, 67, 0.9) 50%, rgba(244, 81, 30, 0.95) 100%);
    transform: translateY(2px) scale(1.1);
    box-shadow: 
        0 4px 0 rgba(191, 54, 12, 0.7),
        0 6px 3px rgba(0, 0, 0, 0.25),
        inset 0 2px 0 rgba(255, 255, 255, 0.5),
        inset 0 -2px 6px rgba(0, 0, 0, 0.15);
    animation: jelly 0.5s ease-in-out;
}

.sidebar-close:active {
    transform: translateY(6px) scale(1.05);
    box-shadow: 
        0 0 0 rgba(191, 54, 12, 0.7),
        0 2px 2px rgba(0, 0, 0, 0.2),
        inset 0 2px 5px rgba(0, 0, 0, 0.3);
    animation: jellySquish 0.3s ease-in-out;
}

.sidebar-nav {
    list-style: none;
}

.sidebar-nav li {
    margin-bottom: 20px;
}

.sidebar-nav li a {
    text-decoration: none;
    color: white;
    font-size: 18px;
    font-weight: 600;
    display: block;
    padding: 18px 25px;
    border-radius: 20px;
    background: linear-gradient(180deg, rgba(255, 211, 155, 0.85) 0%, rgba(255, 167, 38, 0.8) 50%, rgba(255, 140, 0, 0.85) 100%);
    border: 2px solid rgba(230, 81, 0, 0.5);
    box-shadow: 
        0 5px 0 rgba(216, 67, 21, 0.6),
        0 6px 3px rgba(0, 0, 0, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.3),
        inset 0 -1px 4px rgba(0, 0, 0, 0.1);
    transition: all 0.2s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    position: relative;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(8px);
}

.sidebar-nav li a::before {
    content: '';
    position: absolute;
    top: -1px;
    left: 20%;
    right: 20%;
    height: 3px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.6), transparent);
    border-radius: 50%;
    filter: blur(1px);
}

.sidebar-nav li a::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.25), transparent 50%);
    border-radius: 20px;
    pointer-events: none;
}

.sidebar-nav li a:hover {
    background: linear-gradient(180deg, rgba(255, 228, 181, 0.9) 0%, rgba(255, 183, 77, 0.85) 50%, rgba(255, 152, 0, 0.9) 100%);
    transform: translateY(2px) scale(1.02);
    box-shadow: 
        0 3px 0 rgba(216, 67, 21, 0.6),
        0 4px 2px rgba(0, 0, 0, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.4),
        inset 0 -1px 4px rgba(0, 0, 0, 0.05);
    animation: jelly 0.5s ease-in-out;
}

.sidebar-nav li a:active {
    transform: translateY(5px) scale(1);
    box-shadow: 
        0 0 0 rgba(216, 67, 21, 0.6),
        0 1px 1px rgba(0, 0, 0, 0.1),
        inset 0 1px 3px rgba(0, 0, 0, 0.2);
    animation: jellySquish 0.3s ease-in-out;
}

.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s ease;
    z-index: 1000;
}

.overlay.active {
    opacity: 1;
    visibility: visible;
}

/* 主内容区域 - 无边界画布布局 */
main {
    position: relative;
}

.section {
    min-height: 100vh;
    padding: 120px 0 80px;
    display: flex;
    align-items: center;
    position: relative;
    overflow: visible;
    perspective: 2000px;
    transform-style: preserve-3d;
}

.section-container {
    width: 100%;
    position: relative;
    z-index: 2;
    padding: 0 5vw;
}

/* 抽象有机形态背景 - 无边界画布 */
.organic-shape {
    position: fixed;
    border-radius: 63% 37% 54% 46% / 55% 48% 52% 45%;
    opacity: 0.15;
    z-index: 0;
    animation: morph 20s infinite ease-in-out, float 15s infinite ease-in-out;
    filter: blur(40px);
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.1); }
    66% { transform: translate(-30px, 30px) scale(0.9); }
}

@keyframes morph {
    0%, 100% { border-radius: 63% 37% 54% 46% / 55% 48% 52% 45%; }
    25% { border-radius: 40% 60% 70% 30% / 50% 60% 40% 50%; }
    50% { border-radius: 54% 46% 38% 62% / 49% 70% 30% 51%; }
    75% { border-radius: 70% 30% 50% 50% / 30% 54% 46% 70%; }
}

/* 非对称网格系统 - 无边界画布 */
.grid-system {
    display: grid;
    grid-template-columns: 2fr 1fr 1.5fr 1fr 2.5fr;
    grid-auto-rows: minmax(150px, auto);
    gap: 40px;
    margin-top: 50px;
    width: 100%;
}

.grid-system.asymmetric-layout {
    grid-template-columns: 1.2fr 0.8fr 1.5fr 0.9fr 1.6fr;
    grid-template-rows: repeat(auto-fit, minmax(180px, auto));
}

.grid-item {
    background: transparent;
    border-radius: 40px;
    padding: 50px;
    box-shadow: none;
    transition: all 0.4s ease;
    position: relative;
    backdrop-filter: blur(10px);
    transform-style: preserve-3d;
    perspective: 1000px;
}

.grid-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--orange-cream) 0%, var(--orange-light) 100%);
    border-radius: 40px;
    opacity: 0.7;
    z-index: -1;
    transition: all 0.4s ease;
}

.grid-item:hover {
    transform: translateY(-8px) translateZ(50px) scale(1.02);
}

.grid-item:hover::before {
    opacity: 0.95;
    box-shadow: 20px 20px 40px var(--shadow-dark),
                -20px -20px 40px var(--shadow-light);
    background: linear-gradient(135deg, var(--orange-light) 0%, var(--orange-sand) 100%);
}

.grid-item.col-12 { grid-column: span 12; }
.grid-item.col-8 { grid-column: span 8; }
.grid-item.col-6 { grid-column: span 6; }
.grid-item.col-4 { grid-column: span 4; }
.grid-item.col-3 { grid-column: span 3; }

.grid-item.row-2 { grid-row: span 2; }

/* 新拟态图标容器 */
.icon-container {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--orange-cream), var(--orange-peach));
    box-shadow: inset 6px 6px 12px var(--shadow-dark),
                inset -6px -6px 12px var(--shadow-light);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
}

.icon-container i {
    font-size: 36px;
    color: var(--orange-burnt);
}

/* 标题样式 */
h1 {
    font-size: 58px;
    margin-bottom: 25px;
    line-height: 1.2;
    color: var(--orange-deep);
    font-variation-settings: 'wght' 800;
    text-shadow: 2px 2px 4px rgba(255, 107, 53, 0.2);
    transition: font-variation-settings 0.3s ease;
}

h1:hover {
    font-variation-settings: 'wght' 900;
    color: var(--orange-burnt);
}

h2 {
    font-size: 48px;
    margin-bottom: 30px;
    color: var(--orange-dark);
    font-variation-settings: 'wght' 700;
    transition: font-variation-settings 0.3s ease;
}

h2:hover {
    font-variation-settings: 'wght' 800;
    color: var(--orange-burnt);
}

h3 {
    font-size: 24px;
    margin-bottom: 15px;
    color: var(--orange-medium);
    font-variation-settings: 'wght' 700;
    transition: font-variation-settings 0.3s ease;
}

h3:hover {
    font-variation-settings: 'wght' 750;
    color: var(--orange-dark);
}

.section-subtitle {
    font-size: 14px;
    color: var(--orange-accent);
    margin-bottom: 15px;
    text-transform: uppercase;
    letter-spacing: 3px;
    font-weight: 700;
}

p {
    margin-bottom: 20px;
    color: var(--orange-text);
    line-height: 1.8;
    font-size: 16px;
    font-variation-settings: 'wght' 400;
    transition: font-variation-settings 0.2s ease;
}

p:hover {
    font-variation-settings: 'wght' 450;
    color: #3A1F1D;
}

/* 拟物化按钮设计 */
.btn {
    display: inline-block;
    background: linear-gradient(180deg, #FFD39B 0%, #FFA726 50%, #FF8C00 100%);
    color: white;
    padding: 18px 45px;
    border: 3px solid #E65100;
    border-radius: 12px;
    font-size: 16px;
    font-variation-settings: 'wght' 700;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    box-shadow: 
        0 8px 0 #D84315,
        0 10px 4px rgba(0, 0, 0, 0.3),
        inset 0 2px 0 rgba(255, 255, 255, 0.5),
        inset 0 -2px 8px rgba(0, 0, 0, 0.2);
    margin-top: 20px;
    position: relative;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    transform-style: preserve-3d;
}

.btn::before {
    content: '';
    position: absolute;
    top: -2px;
    left: 10%;
    right: 10%;
    height: 4px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.6), transparent);
    border-radius: 50%;
    filter: blur(2px);
}

.btn:hover {
    background: linear-gradient(180deg, #FFE4B5 0%, #FFB74D 50%, #FF9800 100%);
    transform: translateY(2px);
    box-shadow: 
        0 6px 0 #D84315,
        0 8px 3px rgba(0, 0, 0, 0.25),
        inset 0 2px 0 rgba(255, 255, 255, 0.6),
        inset 0 -2px 8px rgba(0, 0, 0, 0.15);
}

.btn:active {
    transform: translateY(8px);
    box-shadow: 
        0 0 0 #D84315,
        0 2px 2px rgba(0, 0, 0, 0.2),
        inset 0 2px 6px rgba(0, 0, 0, 0.3);
}

.btn-accent {
    background: linear-gradient(180deg, #FF9F40 0%, #FF6B35 50%, #E65100 100%);
    border-color: #BF360C;
    color: white;
    box-shadow: 
        0 10px 0 #BF360C,
        0 12px 5px rgba(0, 0, 0, 0.4),
        inset 0 2px 0 rgba(255, 255, 255, 0.4),
        inset 0 -2px 10px rgba(0, 0, 0, 0.3);
}

.btn-accent::before {
    background: linear-gradient(90deg, transparent, rgba(255, 200, 150, 0.7), transparent);
}

.btn-accent:hover {
    background: linear-gradient(180deg, #FFB74D 0%, #FF7043 50%, #F4511E 100%);
    transform: translateY(3px);
    box-shadow: 
        0 7px 0 #BF360C,
        0 9px 4px rgba(0, 0, 0, 0.35),
        inset 0 2px 0 rgba(255, 255, 255, 0.5),
        inset 0 -2px 10px rgba(0, 0, 0, 0.25);
}

.btn-accent:active {
    transform: translateY(10px);
    box-shadow: 
        0 0 0 #BF360C,
        0 2px 3px rgba(0, 0, 0, 0.3),
        inset 0 2px 8px rgba(0, 0, 0, 0.4);
}

/* 首页样式 - 无边界画布 */
#home {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    padding: 120px 5vw 80px;
}

.home-content {
    max-width: none;
    width: 100%;
    z-index: 2;
    padding: 80px 10vw;
    border-radius: 0;
    background: radial-gradient(circle at center, rgba(255, 245, 230, 0.6), transparent);
    box-shadow: none;
}

/* 径向布局（有机形态） */
.radial-container {
    position: relative;
    height: 600px;
    margin: 60px 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.radial-center {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--orange-medium), var(--orange-burnt));
    box-shadow: inset 8px 8px 16px rgba(230, 81, 0, 0.3),
                inset -8px -8px 16px rgba(255, 255, 255, 0.8),
                12px 12px 24px var(--shadow-dark),
                -12px -12px 24px var(--shadow-light);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3;
}

.radial-center i {
    font-size: 60px;
    color: white;
}

.radial-orbit {
    position: absolute;
    width: 160px;
    height: 160px;
    background: linear-gradient(135deg, var(--orange-cream), var(--orange-light));
    border-radius: 40% 60% 70% 30% / 50% 60% 40% 50%;
    box-shadow: 10px 10px 20px var(--shadow-dark),
                -10px -10px 20px var(--shadow-light);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
    text-align: center;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    animation: morph 15s infinite ease-in-out;
    transform-style: preserve-3d;
}

.radial-orbit:nth-child(odd) {
    animation-delay: -5s;
}

.radial-orbit:nth-child(even) {
    animation-delay: -10s;
}

.radial-orbit:hover {
    transform: scale(1.1) translateZ(80px);
    box-shadow: 14px 14px 28px var(--shadow-dark),
                -14px -14px 28px var(--shadow-light);
    background: linear-gradient(135deg, var(--orange-light), var(--orange-sand));
}

.radial-orbit:nth-child(2n):hover {
    transform: scale(1.1) translateZ(80px) rotateX(10deg);
}

.radial-orbit:nth-child(2n+1):hover {
    transform: scale(1.1) translateZ(80px) rotateY(10deg);
}

.radial-orbit i {
    font-size: 32px;
    color: var(--orange-burnt);
    margin-bottom: 10px;
}

.radial-orbit h4 {
    font-size: 14px;
    color: var(--orange-dark);
    font-weight: 700;
}

/* 联系表单 */
.contact-form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
    margin-top: 40px;
}

.form-group {
    margin-bottom: 0;
}

.form-group.full-width {
    grid-column: 1 / 3;
}

label {
    display: block;
    margin-bottom: 10px;
    font-weight: 600;
    color: var(--orange-dark);
    font-size: 14px;
}

input, textarea {
    width: 100%;
    padding: 16px 20px;
    background: var(--orange-cream);
    border: none;
    border-radius: 20px;
    font-size: 15px;
    color: var(--orange-text);
    box-shadow: inset 6px 6px 12px var(--shadow-dark),
                inset -6px -6px 12px var(--shadow-light);
    transition: all 0.3s ease;
}

input:focus, textarea:focus {
    outline: none;
    box-shadow: inset 8px 8px 16px var(--shadow-dark),
                inset -8px -8px 16px var(--shadow-light);
    background: linear-gradient(135deg, var(--orange-cream), var(--orange-peach));
}

textarea {
    min-height: 150px;
    resize: vertical;
}

/* FAQ样式 - 无边界画布 */
.faq-item {
    margin-bottom: 30px;
    background: transparent;
    border-radius: 30px;
    padding: 35px;
    box-shadow: none;
    position: relative;
    transform-style: preserve-3d;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--orange-cream), var(--orange-light));
    border-radius: 30px;
    opacity: 0.6;
    z-index: -1;
    transition: all 0.3s ease;
}

.faq-item:hover {
    transform: translateZ(30px);
}

.faq-item:hover::before {
    opacity: 0.9;
    box-shadow: 12px 12px 24px var(--shadow-dark),
                -12px -12px 24px var(--shadow-light);
    background: linear-gradient(135deg, var(--orange-light), var(--orange-sand));
}

.faq-question {
    font-weight: 700;
    font-size: 18px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--orange-dark);
}

.faq-question:hover {
    color: var(--orange-burnt);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
    padding-top: 0;
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding-top: 15px;
}

.faq-toggle {
    width: 35px;
    height: 35px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--orange-light), var(--orange-sand));
    box-shadow: inset 3px 3px 6px var(--shadow-dark),
                inset -3px -3px 6px var(--shadow-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--orange-burnt);
    transition: all 0.3s ease;


/* 环绕式布局 - 非对称网格 */
.wrap-layout {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
    margin-top: 50px;
    width: 100%;
}

.wrap-item {
    background: transparent;
    border-radius: 35px;
    padding: 45px;
    box-shadow: none;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    transform-style: preserve-3d;
}

.wrap-item:nth-child(6n+1) { grid-column: span 2; }
.wrap-item:nth-child(6n+3) { grid-row: span 2; }
.wrap-item:nth-child(6n+5) { 
    grid-column: span 2; 
    grid-row: span 1;
}

.wrap-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--orange-cream), var(--orange-light));
    border-radius: 35px;
    opacity: 0.6;
    z-index: -1;
    transition: all 0.4s ease;
}

.wrap-item:hover {
    transform: translateY(-10px) translateZ(60px) rotate(2deg);
}

.wrap-item:nth-child(odd):hover {
    transform: translateY(-10px) translateZ(60px) rotateY(5deg);
}

.wrap-item:nth-child(even):hover {
    transform: translateY(-10px) translateZ(60px) rotateY(-5deg);
}

.wrap-item:hover::before {
    opacity: 0.9;
    box-shadow: 18px 18px 36px var(--shadow-dark),
                -18px -18px 36px var(--shadow-light);
    background: linear-gradient(135deg, var(--orange-light), var(--orange-sand));
}

/* 环形文本环绕 */
.circular-text-wrap {
    position: relative;
    width: 100%;
    max-width: 800px;
    margin: 80px auto;
    padding: 60px;
}

.circular-center-content {
    position: relative;
    z-index: 10;
    text-align: center;
    background: linear-gradient(135deg, var(--orange-medium), var(--orange-burnt));
    border-radius: 50%;
    width: 300px;
    height: 300px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    box-shadow: 15px 15px 30px var(--shadow-dark),
                -15px -15px 30px var(--shadow-light);
    transform-style: preserve-3d;
    transition: all 0.4s ease;
}

.circular-center-content:hover {
    transform: translateZ(50px) scale(1.05);
    background: linear-gradient(135deg, var(--orange-burnt), var(--orange-deep));
}

.surrounding-items {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
}

.surrounding-item {
    position: absolute;
    background: linear-gradient(135deg, var(--orange-cream), var(--orange-light));
    padding: 20px 30px;
    border-radius: 25px;
    box-shadow: 8px 8px 16px var(--shadow-dark),
                -8px -8px 16px var(--shadow-light);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    transform-style: preserve-3d;
}

.surrounding-item:hover {
    transform: scale(1.1) translateZ(40px);
    box-shadow: 12px 12px 24px var(--shadow-dark),
                -12px -12px 24px var(--shadow-light);
    background: linear-gradient(135deg, var(--orange-light), var(--orange-sand));
}

.surrounding-item:nth-child(odd):hover {
    transform: scale(1.1) translateZ(40px) rotateZ(5deg);
}

.surrounding-item:nth-child(even):hover {
    transform: scale(1.1) translateZ(40px) rotateZ(-5deg);
}

.surrounding-item:nth-child(1) { top: 0; left: 50%; transform: translateX(-50%); }
.surrounding-item:nth-child(2) { top: 15%; right: 10%; }
.surrounding-item:nth-child(3) { top: 50%; right: 0; transform: translateY(-50%); }
.surrounding-item:nth-child(4) { bottom: 15%; right: 10%; }
.surrounding-item:nth-child(5) { bottom: 0; left: 50%; transform: translateX(-50%); }
.surrounding-item:nth-child(6) { bottom: 15%; left: 10%; }
.surrounding-item:nth-child(7) { top: 50%; left: 0; transform: translateY(-50%); }
.surrounding-item:nth-child(8) { top: 15%; left: 10%; }

@media (max-width: 768px) {
    .wrap-item {
        grid-column: span 1 !important;
        grid-row: span 1 !important;
    }
    
    .grid-system {
        grid-template-columns: 1fr;
    }
    
    .grid-system.asymmetric-layout {
        grid-template-columns: 1fr;
    }

    .circular-text-wrap {
        padding: 40px 20px;
    }

    .surrounding-items {
        width: 400px;
        height: 400px;
    }

    .circular-center-content {
        width: 200px;
        height: 200px;
    }
}

}

.faq-item.active .faq-toggle {
    transform: rotate(45deg);
}

/* 页脚 - 无边界画布 */
footer {
    background: transparent;
    padding: 80px 0 40px;
    margin-top: 0;
    position: relative;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--orange-dark), var(--orange-burnt));
    opacity: 0.95;
    z-index: -1;
}

.footer-content {
    width: 100%;
    margin: 0;
    padding: 0 5vw;
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 50px;
    margin-bottom: 40px;
}

.footer-info h3, .footer-contact h4 {
    color: white;
    margin-bottom: 20px;
}

.footer-info p, .footer-contact p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 10px;
}

.footer-bottom {
    text-align: center;
    padding-top: 25px;
    border-top: 2px solid rgba(255, 255, 255, 0.3);
    max-width: 1400px;
    margin: 0 auto;
    padding: 25px 40px 0;
    color: white;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .grid-item.col-8 { grid-column: span 12; }
    .grid-item.col-6 { grid-column: span 6; }
    .grid-item.col-4 { grid-column: span 6; }
    .grid-item.col-3 { grid-column: span 6; }
}

@media (max-width: 992px) {
    h1 { font-size: 42px; }
    h2 { font-size: 36px; }

    .grid-item.col-6, .grid-item.col-4, .grid-item.col-3 {
        grid-column: span 12;
    }

    .contact-form {
        grid-template-columns: 1fr;
    }

    .form-group.full-width {
        grid-column: 1;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }

    .radial-container {
        height: 500px;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 100px 0 60px;
    }

    .section-container {
        padding: 0 4vw;
    }

    nav ul {
        display: none;
    }

    .sidebar-toggle {
        display: block;
    }

    h1 { font-size: 32px; }
    h2 { font-size: 28px; }

    .home-content {
        padding: 60px 8vw;
    }

    #home {
        padding: 100px 4vw 60px;
    }

    .radial-container {
        height: 400px;
    }

    .radial-orbit {
        width: 120px;
        height: 120px;
    }

    .wrap-item {
        flex: 1 1 100%;
    }

    .nav-container,
    .footer-content {
        padding: 0 4vw;
    }
}