/* ========================================
   Peach Lover - Main Stylesheet
   Mobile-First Responsive Design
   Version: 2026032001
   ======================================== */

/* CSS Variables */
:root {
    /* Colors - 樱花粉渐变系 */
    --color-primary: #FFB7C5;           /* 樱花粉 */
    --color-primary-light: #FFD1DC;     /* 浅粉 */
    --color-primary-dark: #FF6989;      /* 深粉 */
    --color-gradient-start: #FFFFFF;    /* 渐变起始 - 白色 */
    --color-gradient-mid: #FFD1DC;      /* 渐变中间 - 浅粉 */
    --color-gradient-end: #FFB7C5;      /* 渐变结束 - 深粉 */
    --color-accent: #D4AF37;            /* 金色点缀 */
    --color-text: #2D3436;
    --color-text-strong: #1F2331;
    --color-text-light: #636E72;
    --color-bg: #FFFFFF;
    --color-bg-alt: #FFF5F7;            /* 淡粉背景 */
    --color-border: #F0E4E8;            /* 粉色边框 */
    --color-surface: rgba(255, 255, 255, 0.82);
    --color-surface-soft: rgba(255, 245, 247, 0.76);
    --color-surface-elevated: rgba(255, 255, 255, 0.96);
    --color-success: #27AE60;           /* 成功色 */
    --color-warning: #F39C12;           /* 警告色 */
    --color-error: #E74C3C;             /* 错误色 */
    --gradient-brand: linear-gradient(135deg, #FF8BAA 0%, #FF6F95 45%, #FFC2CF 100%);
    --gradient-surface: linear-gradient(180deg, rgba(255,255,255,0.98) 0%, rgba(255,246,248,0.9) 100%);
    --gradient-page:
        radial-gradient(circle at top right, rgba(255, 183, 197, 0.18), transparent 24%),
        radial-gradient(circle at bottom left, rgba(212, 175, 55, 0.08), transparent 22%),
        linear-gradient(180deg, #fffdfd 0%, #fff7f9 100%);

    /* Typography - 圆润字体 */
    --font-family: 'Varela Round', 'Nunito', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.6;

    /* Spacing - 大间距 */
    --spacing-xs: 0.75rem;
    --spacing-sm: 1.25rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    --spacing-xxl: 6rem;

    /* Border Radius - 小圆角精致风格 */
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 10px;
    --radius-xl: 20px;
    --radius-2xl: 28px;
    --radius-full: 9999px;

    /* Shadows - 中等阴影层次感 */
    --shadow-sm: 0 2px 8px rgba(255, 105, 135, 0.1);
    --shadow-md: 0 4px 16px rgba(255, 105, 135, 0.15);
    --shadow-lg: 0 8px 32px rgba(255, 105, 135, 0.2);
    --shadow-soft: 0 10px 28px rgba(255, 105, 135, 0.08);
    --shadow-card: 0 18px 48px rgba(255, 105, 135, 0.12);
    --shadow-floating: 0 24px 64px rgba(255, 105, 135, 0.18);
    --shadow-inner: inset 0 1px 0 rgba(255,255,255,0.72);

    /* Transitions - 优化响应速度 */
    --transition-fast: 200ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;

    --content-max: 1240px;

    /* 噪点纹理 - 防止渐变色带 */
    --noise-texture: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
}

/* 超宽屏 (≥1440px) 全局渐变优化 */
@media (min-width: 1440px) {
    /* 噪点纹理混合 */
    .hero-bg::after,
    [class*="gradient"]::after {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        pointer-events: none;
        background: var(--noise-texture);
        z-index: 1;
    }
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 1rem;
    line-height: var(--line-height-base);
    color: var(--color-text);
    background-color: var(--color-bg);
    background-image: var(--gradient-page);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    min-height: 100vh;
    overflow-x: hidden;
}

::selection {
    background: rgba(255, 111, 149, 0.22);
    color: var(--color-text-strong);
}

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

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

ul, ol {
    list-style: none;
}

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

input, textarea {
    font-family: inherit;
    font-size: 1rem;
}

/* 可访问性 - 焦点状态 */
:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

:focus:not(:focus-visible) {
    outline: none;
}

:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* 跳过链接（键盘导航） */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: white;
    padding: 8px 16px;
    z-index: 10000;
    transition: top 0.3s;
}

.skip-link:focus {
    top: 0;
}

/* Container */
.container {
    width: 100%;
    max-width: var(--content-max);
    margin: 0 auto;
    padding: 0 1.25rem;
}

/* Section Title */
.section-title {
    font-size: 1.95rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: calc(var(--spacing-xl) - 0.5rem);
    color: var(--color-text-strong);
    position: relative;
    letter-spacing: -0.04em;
    line-height: 1.08;
}

.section-title::after {
    content: '';
    display: block;
    width: 96px;
    height: 4px;
    background: var(--gradient-brand);
    margin: 1rem auto 0;
    border-radius: var(--radius-full);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.55rem;
    min-height: 52px;
    padding: 0.95rem 1.8rem;
    font-size: 0.97rem;
    font-weight: 700;
    text-align: center;
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    white-space: nowrap;
    cursor: pointer;
    border: 1px solid transparent;
    letter-spacing: 0.01em;
    box-shadow: var(--shadow-soft);
}

.btn-primary {
    background: var(--gradient-brand);
    color: white;
    box-shadow: 0 16px 34px rgba(255, 105, 137, 0.22);
    position: relative;
    overflow: hidden;
    border-color: rgba(255, 255, 255, 0.35);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left var(--transition-slow);
}

.btn-primary:hover {
    transform: translateY(-4px) scale(1.01);
    box-shadow: var(--shadow-floating);
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:active {
    transform: translateY(-1px);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* 加载状态 */
.btn-loading {
    position: relative;
    color: transparent !important;
    pointer-events: none;
}

.btn-loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    top: 50%;
    left: 50%;
    margin-left: -10px;
    margin-top: -10px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.btn-secondary {
    background: rgba(255, 255, 255, 0.82);
    color: var(--color-primary-dark);
    border: 1px solid rgba(255, 105, 137, 0.2);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.96);
    border-color: rgba(255, 105, 137, 0.34);
    color: var(--color-primary-dark);
    transform: translateY(-3px);
    box-shadow: var(--shadow-card);
}

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

/* ========================================
   Header & Navigation
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: linear-gradient(135deg,
        rgba(255, 255, 255, 0.8),
        rgba(255, 245, 247, 0.78),
        rgba(255, 232, 238, 0.8));
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 10px 32px rgba(255, 105, 135, 0.08);
    border-bottom: 1px solid rgba(255, 255, 255, 0.65);
    transition: background var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.header.header-scrolled {
    background: linear-gradient(135deg,
        rgba(255, 255, 255, 0.94),
        rgba(255, 243, 246, 0.92),
        rgba(255, 224, 233, 0.94));
    box-shadow: 0 16px 40px rgba(255, 105, 135, 0.14);
    border-bottom-color: rgba(255, 183, 197, 0.28);
}

.nav-container {
    max-width: var(--content-max);
    margin: 0 auto;
    padding: 0 1.25rem;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    height: 72px;
    position: relative;
}

/* 超宽屏 (≥1440px) 导航栏优化 */
@media (min-width: 1440px) {
    .nav-container {
        max-width: 1200px;
    }
}

.logo {
    margin-right: auto;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #ff6f95, #ffb0c2 92%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 0.02em;
    transition: transform var(--transition-base);
}

.logo:hover {
    transform: scale(1.05);
}

.logo-icon {
    font-size: 2rem;
    filter: drop-shadow(0 2px 4px rgba(255, 105, 137, 0.3));
}

.nav-toggle {
    display: block;
    width: 40px;
    height: 40px;
    position: relative;
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    transition: var(--transition-base);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    left: 0;
    transition: var(--transition-base);
}

.hamburger::before {
    top: -8px;
}

.hamburger::after {
    top: 8px;
}

.nav-toggle[aria-expanded="true"] .hamburger {
    background: transparent;
}

.nav-toggle[aria-expanded="true"] .hamburger::before {
    transform: rotate(45deg);
    top: 0;
}

.nav-toggle[aria-expanded="true"] .hamburger::after {
    transform: rotate(-45deg);
    top: 0;
}

.nav-menu {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: linear-gradient(135deg,
        rgba(255, 255, 255, 0.97),
        rgba(255, 247, 249, 0.97));
    backdrop-filter: blur(22px);
    padding: var(--spacing-md);
    box-shadow: 0 24px 54px rgba(255, 105, 135, 0.14);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    max-height: calc(100vh - 72px);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch; /* iOS 平滑滚动 */
    border-bottom: 1px solid rgba(255, 183, 197, 0.18);
}

.nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}

.nav-menu li {
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.nav-link {
    display: inline-block;
    padding: 0.8rem 1.15rem;
    color: var(--color-text-strong);
    font-weight: 600;
    font-size: 0.96rem;
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    border: 1px solid transparent;
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-dark));
    transition: width var(--transition-base);
}

.nav-link:hover::before,
.nav-link.active::before {
    width: 80%;
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-primary-dark);
    background: rgba(255, 255, 255, 0.72);
    border-color: rgba(255, 105, 137, 0.14);
    box-shadow: 0 12px 24px rgba(255, 105, 135, 0.08);
}

/* Search Icon in Nav */
.nav-link.search-icon {
    font-size: 1.25rem;
    padding: 0.5rem 0.75rem;
}

.nav-link.search-icon:hover,
.nav-link.search-icon.active {
    background: rgba(255, 183, 197, 0.25);
}

.blog-subnav {
    position: relative;
    z-index: 100;
    margin-top: 72px;
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(255, 183, 197, 0.2);
}

.blog-subnav .container {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    overflow-x: auto;
    padding: 0.85rem 1rem;
    scrollbar-width: none;
}

.blog-subnav .container::-webkit-scrollbar {
    display: none;
}

.blog-subnav-link {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    white-space: nowrap;
    padding: 0.6rem 1rem;
    border-radius: 999px;
    border: 1px solid rgba(255, 183, 197, 0.22);
    background: rgba(255, 255, 255, 0.7);
    color: var(--color-text-light);
    font-size: 0.9375rem;
    font-weight: 600;
    transition: all var(--transition-base);
}

.blog-subnav-link:hover,
.blog-subnav-link.active {
    color: var(--color-primary-dark);
    border-color: rgba(255, 107, 157, 0.28);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(255, 245, 247, 0.95));
    box-shadow: 0 10px 24px rgba(255, 183, 197, 0.18);
}

@media (max-width: 767px) {
    .blog-subnav {
        margin-top: 58px;
    }

    .blog-subnav .container {
        gap: 0.5rem;
        padding: 0.75rem;
    }

    .blog-subnav-link {
        padding: 0.55rem 0.9rem;
        font-size: 0.875rem;
    }
}

/* ========================================
   Hero Section
   ======================================== */
/* ========================================
   NEW Hero Section - Full Width Design
   ======================================== */

.hero {
    padding: 72px 0 0;
    min-height: 100vh;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

/* 全宽渐变背景 */
.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg,
        #FFFFFF 0%,
        #FFF5F7 25%,
        #FFE4EC 50%,
        #FFD1DC 75%,
        #FFB7C5 100%);
    z-index: 0;
}

/* 装饰性几何图形 */
.hero-bg::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 150%;
    background: radial-gradient(ellipse, rgba(255,255,255,0.8) 0%, transparent 70%);
    pointer-events: none;
}

.hero-bg::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -30%;
    width: 80%;
    height: 100%;
    background: radial-gradient(circle, rgba(255,183,197,0.4) 0%, transparent 60%);
    pointer-events: none;
}

/* 浮动装饰元素 */
.hero-decor {
    position: absolute;
    pointer-events: none;
    z-index: 1;
}

.hero-decor-1 {
    top: 15%;
    right: 15%;
    width: 120px;
    height: 120px;
    background: linear-gradient(135deg, rgba(255,183,197,0.6), rgba(255,143,171,0.3));
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    animation: decorFloat 6s ease-in-out infinite;
}

.hero-decor-2 {
    top: 40%;
    left: 8%;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, rgba(212,175,55,0.4), rgba(212,175,55,0.2));
    border-radius: 50%;
    animation: decorFloat 8s ease-in-out infinite reverse;
}

.hero-decor-3 {
    bottom: 25%;
    right: 20%;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, rgba(255,107,107,0.3), rgba(255,143,171,0.2));
    border-radius: 50% 50% 50% 50% / 60% 40% 60% 40%;
    animation: decorFloat 7s ease-in-out infinite;
}

@keyframes decorFloat {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(10deg); }
}

/* 主内容区域 */
.hero-main {
    position: relative;
    z-index: 2;
    flex: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    max-width: 1280px;
    margin: 0 auto;
    padding: 60px 60px 40px;
    align-items: center;
    width: 100%;
}

.hero-content {
    text-align: left;
    padding-right: 40px;
}

.hero-badge {
    display: inline-block;
    padding: 0.65rem 1.1rem;
    background: rgba(255, 255, 255, 0.84);
    border-radius: 30px;
    font-size: 0.84rem;
    color: #FF6989;
    margin-bottom: 24px;
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 183, 197, 0.42);
    box-shadow: 0 10px 28px rgba(255, 183, 197, 0.14);
    letter-spacing: 0.05em;
    font-weight: 700;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    background: linear-gradient(135deg, #FF6989 0%, #FF8FAB 50%, #FFB7C5 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -2px;
    text-shadow: 0 4px 30px rgba(255, 105, 137, 0.3);
}

.hero-title .highlight {
    position: relative;
    display: inline-block;
}

.hero-title .highlight::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 0;
    right: 0;
    height: 20px;
    background: linear-gradient(90deg,
        rgba(255, 183, 197, 0.6),
        rgba(212, 175, 55, 0.4));
    z-index: -1;
    border-radius: 4px;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--color-text);
    margin-bottom: 36px;
    line-height: 1.9;
    font-weight: 400;
    max-width: 560px;
    opacity: 0.78;
}

.hero-cta {
    display: flex;
    gap: 18px;
    flex-wrap: wrap;
}

.hero-cta .btn {
    padding: 16px 32px;
    font-size: 1rem;
    border-radius: 50px;
    font-weight: 600;
}

.hero-stats {
    display: flex;
    gap: 1.4rem;
    margin-top: 44px;
    padding: 1.15rem 1.35rem;
    border: 1px solid rgba(255, 255, 255, 0.58);
    border-radius: 26px;
    background: rgba(255, 255, 255, 0.44);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    box-shadow: 0 18px 40px rgba(255, 105, 135, 0.08);
    width: fit-content;
    max-width: 100%;
}

.hero-stat {
    display: flex;
    flex-direction: column;
    min-width: 110px;
    position: relative;
}

.hero-stat:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 50%;
    right: -0.7rem;
    width: 1px;
    height: 32px;
    background: rgba(255, 105, 137, 0.16);
    transform: translateY(-50%);
}

.hero-stat .stat-num {
    font-size: 2.2rem;
    font-weight: 800;
    background: linear-gradient(135deg, #FF6989, #FFB7C5);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-stat .stat-desc {
    font-size: 0.85rem;
    color: #636E72;
    margin-top: 4px;
}

/* 右侧头像区域 */
.hero-image {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.hero-avatar {
    position: relative;
    width: 380px;
    height: 380px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.avatar-inner {
    position: relative;
    z-index: 2;
    width: 240px;
    height: 240px;
    background: linear-gradient(135deg, rgba(255,255,255,0.95) 0%, rgba(255,243,240,0.95) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow:
        0 20px 60px rgba(255, 143, 171, 0.4),
        0 0 0 8px rgba(255, 255, 255, 0.8),
        inset 0 -10px 30px rgba(255, 183, 197, 0.2);
}

.avatar-emoji {
    font-size: 8rem;
    z-index: 2;
    animation: avatarFloat 3s ease-in-out infinite;
    filter: drop-shadow(0 10px 20px rgba(0,0,0,0.1));
}

.avatar-ring {
    position: absolute;
    width: 280px;
    height: 280px;
    border-radius: 50%;
    border: 3px solid rgba(255, 183, 197, 0.5);
    animation: avatarRotate 10s linear infinite;
}

.avatar-ring-2 {
    position: absolute;
    width: 340px;
    height: 340px;
    border-radius: 50%;
    border: 2px solid rgba(255, 105, 137, 0.3);
    animation: avatarRotate 15s linear infinite reverse;
}

/* 头像光晕 */
.hero-avatar::before {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255,183,197,0.4) 0%, transparent 70%);
    border-radius: 50%;
    animation: avatarPulse 4s ease-in-out infinite;
}

@keyframes avatarPulse {
    0%, 100% { transform: scale(1); opacity: 0.6; }
    50% { transform: scale(1.1); opacity: 0.3; }
}

@keyframes avatarFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

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

/* 底部波浪分隔 */
.hero-wave {
    position: relative;
    z-index: 2;
    margin-top: auto;
}

.hero-wave svg {
    display: block;
    width: 100%;
    height: 80px;
}

/* ========================================
   Features Section
   ======================================== */
.features {
    padding: var(--spacing-xxl) 0;
    background: var(--color-bg);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
}

.feature-card {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--gradient-surface);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 183, 197, 0.24);
    box-shadow: var(--shadow-soft);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-floating);
    border-color: rgba(255, 105, 137, 0.34);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-strong);
}

.feature-card p {
    color: var(--color-text-light);
    line-height: 1.8;
}

/* ========================================
   Blog Section
   ======================================== */
.blog {
    padding: var(--spacing-xxl) 0;
    background: var(--color-bg-alt);
}

.section-desc {
    text-align: center;
    color: var(--color-text-light);
    font-size: 1.125rem;
    margin-top: calc(-1 * var(--spacing-lg));
    margin-bottom: var(--spacing-xl);
    font-weight: 400;
}

/* Utility - Blog Section */
.blog .text-center {
    text-align: center;
}

.blog .mt-3 {
    margin-top: var(--spacing-lg);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

/* ========================================
   Apps Section
   ======================================== */
.apps {
    padding: var(--spacing-xxl) 0;
    background: linear-gradient(180deg, var(--color-bg) 0%, rgba(255, 183, 197, 0.1) 100%);
}

.apps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.app-card {
    background: linear-gradient(180deg, rgba(255, 251, 252, 0.98), rgba(255, 243, 246, 0.92));
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    text-align: center;
    box-shadow: var(--shadow-soft);
    transition: all var(--transition-base);
    border: 1px solid rgba(255, 183, 197, 0.24);
}

.app-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-floating);
    border-color: rgba(255, 105, 137, 0.34);
}

.app-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
}

.app-name {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-strong);
}

.app-desc {
    color: var(--color-text-light);
    font-size: 0.9375rem;
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.app-tags {
    display: flex;
    gap: var(--spacing-xs);
    justify-content: flex-start;
    flex-wrap: wrap;
}

/* ========================================
   Products Section (Legacy - 保留兼容性)
   ======================================== */
.products {
    padding: var(--spacing-xxl) 0;
    background: var(--color-bg-alt);
}

.products-grid {
    display: grid;
    gap: var(--spacing-lg);
}

.product-card {
    background: var(--gradient-surface);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    text-align: center;
    position: relative;
    border: 1px solid rgba(255, 183, 197, 0.24);
    box-shadow: var(--shadow-soft);
    transition: all var(--transition-base);
    overflow: hidden;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-floating);
    border-color: rgba(255, 105, 137, 0.34);
}

.product-badge {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: white;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: var(--radius-full);
}

.product-image {
    font-size: 5rem;
    margin-bottom: var(--spacing-md);
}

.product-name {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.product-desc {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
}

.product-price {
    margin-bottom: var(--spacing-md);
}

.price-current {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

.price-unit {
    color: var(--color-text-light);
    font-size: 0.875rem;
}

/* ========================================
   Story Section
   ======================================== */
.story {
    padding: var(--spacing-xxl) 0;
    background: var(--color-bg);
}

.story-content {
    max-width: 800px;
    margin: 0 auto var(--spacing-xl);
    text-align: center;
}

.story-text {
    color: var(--color-text-light);
    line-height: 1.95;
    margin-bottom: var(--spacing-md);
    font-size: 1.02rem;
}

.story-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    max-width: 600px;
    margin: 0 auto;
}

.stat-item {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--gradient-surface);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 183, 197, 0.18);
    box-shadow: var(--shadow-soft);
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    color: var(--color-text-light);
    font-size: 0.875rem;
}

/* ========================================
   Reviews Section
   ======================================== */
.reviews {
    padding: var(--spacing-xxl) 0;
    background: var(--color-bg-alt);
}

.reviews-grid {
    display: grid;
    gap: var(--spacing-lg);
}

.review-card {
    background: var(--color-bg);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.review-stars {
    color: #FFD700;
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
    letter-spacing: 2px;
}

.review-text {
    color: var(--color-text);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
    font-style: italic;
}

.review-author {
    color: var(--color-text-light);
    font-size: 0.875rem;
}

/* ========================================
   Contact Section
   ======================================== */
.contact {
    padding: var(--spacing-xxl) 0;
    background: var(--color-bg);
}

.contact-content {
    display: grid;
    gap: var(--spacing-xl);
}

.contact-info {
    display: grid;
    gap: var(--spacing-md);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text);
}

.contact-icon {
    font-size: 1.25rem;
}

.contact-form {
    display: grid;
    gap: var(--spacing-md);
}

.form-group {
    display: grid;
    gap: var(--spacing-xs);
}

.form-group label {
    font-weight: 700;
    color: var(--color-text-strong);
    font-size: 0.94rem;
    letter-spacing: 0.01em;
}

.form-group input,
.form-group textarea {
    padding: 1rem 1.1rem;
    border: 1.5px solid rgba(255, 183, 197, 0.34);
    border-radius: 18px;
    transition: all var(--transition-fast);
    background: linear-gradient(180deg, rgba(255,255,255,0.96), rgba(255,248,250,0.92));
    width: 100%;
    box-shadow: var(--shadow-inner);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(255, 183, 197, 0.2);
    background: var(--color-bg);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #A0AEC0;
}

.form-group input:invalid:not(:placeholder-shown) {
    border-color: var(--color-error);
}

.form-group input:valid:not(:placeholder-shown) {
    border-color: var(--color-success);
}

.form-group textarea {
    resize: vertical;
    min-height: 140px;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: linear-gradient(180deg, #1E2231 0%, #171B27 100%);
    color: white;
    padding: var(--spacing-xxl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-brand {
    text-align: center;
}

.footer-brand .logo-icon {
    font-size: 2rem;
}

.footer-brand .logo-text {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    margin: var(--spacing-sm) 0;
}

.footer-brand p {
    color: rgba(255,255,255,0.7);
}

.footer-links h4,
.footer-social h4 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
}

.footer-links ul {
    display: grid;
    gap: var(--spacing-sm);
}

.footer-links a {
    color: rgba(255,255,255,0.7);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: white;
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    justify-content: flex-start;
}

.social-link {
    padding: 0.5rem 1rem;
    background: rgba(255,255,255,0.1);
    border-radius: var(--radius-full);
    color: white;
    transition: all var(--transition-fast);
}

.social-link:hover {
    background: var(--color-primary);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255,255,255,0.1);
}

.footer-bottom p {
    color: rgba(255,255,255,0.5);
    font-size: 0.875rem;
}

.footer-bottom a {
    color: rgba(255,255,255,0.5);
}

.footer-bottom a:hover {
    color: white;
}

/* ========================================
   Tablet Breakpoint (768px)
   ======================================== */
@media (min-width: 768px) {
    .hero {
        grid-template-columns: 1fr 1fr;
        text-align: left;
    }

    .hero-content {
        text-align: left;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-cta {
        flex-direction: row;
        justify-content: flex-start;
    }

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

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

    .footer-content {
        grid-template-columns: repeat(3, 1fr);
        text-align: left;
    }

    .footer-brand {
        text-align: left;
    }

    .social-links {
        justify-content: flex-start;
    }
}

/* ========================================
   Desktop Breakpoint (1024px)
   ======================================== */
@media (min-width: 1024px) {
    .nav-toggle {
        display: none;
    }

    .nav-menu {
        position: static;
        display: flex;
        gap: var(--spacing-xs);
        transform: none;
        opacity: 1;
        visibility: visible;
        padding: 0;
        box-shadow: none;
        background: transparent;
        justify-content: flex-end;
    }

    .nav-menu li {
        margin-bottom: 0;
    }

    .nav-link {
        padding: 10px 14px;
    }

    .features-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .products-grid,
    .apps-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .hero-title {
        font-size: 3.5rem;
    }

    .section-title {
        font-size: 2.25rem;
    }
}

@media (max-width: 767px) {
    .container {
        padding: 0 1rem;
    }

    .hero-stats {
        width: 100%;
        padding: 1rem;
        gap: 0.85rem;
    }

    .hero-stat {
        min-width: 0;
    }

    .hero-stat:not(:last-child)::after {
        display: none;
    }

    .feature-card,
    .product-card,
    .app-card,
    .stat-item {
        border-radius: 18px;
    }
}

/* ========================================
   Animations
   ======================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
    animation: fadeInUp var(--transition-base) ease forwards;
}

/* 元素渐入动画类 */
.fade-in-up {
    animation: fadeInUp var(--transition-base) ease forwards;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }

/* ========================================
   Utility Classes
   ======================================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }

/* ========================================
   Print Styles
   ======================================== */
@media print {
    .header,
    .hero-cta,
    .contact-form,
    .footer-social {
        display: none;
    }

    body {
        font-size: 12pt;
        line-height: 1.5;
    }

    .container {
        max-width: 100%;
    }
}