/* ================= 基础设置 ================= */
:root {
    /* 颜色系统 - 灵感来自 APP 截图的清新明亮色 */
    --color-primary: #D4F55A;       /* 主色 - 清新黄绿 */
    --color-primary-dark: #B8DC3E;  /* 主色加深 */
    --color-primary-light: #ECF8B8; /* 浅色主 */

    --color-mint: #9BE3CD;          /* 薄荷绿 */
    --color-mint-light: #D9F4EA;
    --color-orange: #FFB85C;        /* 暖橙 */
    --color-orange-light: #FFE5C2;
    --color-pink: #FFB5C2;          /* 樱粉 */
    --color-pink-light: #FFDDE4;
    --color-blue: #A4DBEF;          /* 浅蓝 */
    --color-blue-light: #DCF1F8;

    --color-bg: #FBF8EE;            /* 奶油背景 */
    --color-bg-warm: #F5EFDC;       /* 暖灰背景 */
    --color-card: #FFFFFF;
    --color-text: #1F1B16;          /* 主文字 */
    --color-text-2: #6B6964;        /* 次文字 */
    --color-text-3: #9C9890;        /* 辅助文字 */
    --color-border: #ECE6D4;        /* 边框 */

    /* 字体 */
    --font-zh: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --font-display: 'ZCOOL KuaiLe', 'Noto Serif SC', serif;

    /* 圆角 / 阴影 */
    --radius-sm: 12px;
    --radius-md: 20px;
    --radius-lg: 32px;
    --radius-xl: 48px;
    --shadow-sm: 0 4px 12px rgba(31, 27, 22, 0.06);
    --shadow-md: 0 8px 24px rgba(31, 27, 22, 0.08);
    --shadow-lg: 0 16px 48px rgba(31, 27, 22, 0.12);
    --shadow-xl: 0 24px 64px rgba(31, 27, 22, 0.16);

    /* 间距 */
    --gap-md: 16px;
    --gap-lg: 24px;
    --gap-xl: 48px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-zh);
    font-weight: 400;
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ================= 导航栏 ================= */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(251, 248, 238, 0.85);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    transition: all 0.3s ease;
    border-bottom: 1px solid transparent;
}

.navbar.scrolled {
    background: rgba(251, 248, 238, 0.95);
    border-bottom-color: var(--color-border);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 800;
    font-size: 22px;
}

.logo-icon {
    width: 32px;
    height: 32px;
    display: inline-flex;
    transition: transform 0.3s ease;
}

.logo:hover .logo-icon {
    transform: rotate(-15deg) scale(1.1);
}

.logo-text {
    font-family: var(--font-display);
    font-size: 24px;
    letter-spacing: 1px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    font-size: 15px;
    font-weight: 500;
    color: var(--color-text-2);
    transition: color 0.2s ease;
    position: relative;
}

.nav-links a:not(.btn-download-nav):hover {
    color: var(--color-text);
}

.nav-links a:not(.btn-download-nav)::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-text);
    transition: width 0.3s ease;
}

.nav-links a:not(.btn-download-nav):hover::after {
    width: 100%;
}

.btn-download-nav {
    padding: 8px 20px;
    background: var(--color-text);
    color: var(--color-bg) !important;
    border-radius: 100px;
    font-weight: 600;
    transition: all 0.2s ease;
}

.btn-download-nav:hover {
    background: var(--color-primary);
    color: var(--color-text) !important;
    transform: translateY(-2px);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
}

.menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.menu-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

.mobile-menu {
    display: none;
    flex-direction: column;
    gap: 20px;
    padding: 24px;
    background: var(--color-card);
    border-top: 1px solid var(--color-border);
    font-size: 18px;
    font-weight: 500;
}

.mobile-menu.active {
    display: flex;
}

/* ================= Hero 区 ================= */
.hero {
    position: relative;
    padding: 140px 0 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
    pointer-events: none;
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.6;
    animation: float 20s ease-in-out infinite;
}

.blob-1 {
    width: 400px;
    height: 400px;
    background: var(--color-primary-light);
    top: -100px;
    left: -100px;
}
.blob-2 {
    width: 350px;
    height: 350px;
    background: var(--color-mint-light);
    top: 200px;
    right: -100px;
    animation-delay: -7s;
}
.blob-3 {
    width: 300px;
    height: 300px;
    background: var(--color-pink-light);
    bottom: 0;
    left: 30%;
    animation-delay: -14s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(50px, -30px) scale(1.1); }
    66% { transform: translate(-30px, 40px) scale(0.9); }
}

.hero-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-tag {
    display: inline-block;
    padding: 6px 16px;
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: 100px;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 20px;
    box-shadow: var(--shadow-sm);
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(40px, 6vw, 72px);
    line-height: 1.15;
    letter-spacing: 2px;
    margin-bottom: 24px;
    color: var(--color-text);
}

.hero-title em {
    font-style: normal;
    background: linear-gradient(135deg, var(--color-primary), var(--color-mint));
    padding: 0 8px;
    border-radius: 8px;
    position: relative;
    display: inline-block;
}

.hero-subtitle {
    font-size: 17px;
    color: var(--color-text-2);
    line-height: 1.7;
    margin-bottom: 36px;
    max-width: 540px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    margin-bottom: 56px;
    flex-wrap: wrap;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    background: var(--color-text);
    color: var(--color-bg);
    border-radius: 100px;
    font-weight: 600;
    font-size: 15px;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    background: var(--color-primary);
    color: var(--color-text);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 14px 28px;
    background: transparent;
    color: var(--color-text);
    border: 1.5px solid var(--color-text);
    border-radius: 100px;
    font-weight: 600;
    font-size: 15px;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: var(--color-text);
    color: var(--color-bg);
    transform: translateY(-2px);
}

.btn-secondary svg {
    transition: transform 0.3s ease;
}
.btn-secondary:hover svg {
    transform: translateX(4px);
}

.hero-trust {
    display: flex;
    align-items: center;
    gap: 24px;
    flex-wrap: wrap;
}

.trust-item {
    display: flex;
    flex-direction: column;
}

.trust-num {
    font-family: var(--font-display);
    font-size: 28px;
    font-weight: 700;
    color: var(--color-text);
}

.trust-label {
    font-size: 13px;
    color: var(--color-text-2);
    margin-top: -2px;
}

.trust-divider {
    width: 1px;
    height: 30px;
    background: var(--color-border);
}

/* ================= 手机展示 ================= */
.hero-phone {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    perspective: 1200px;
}

.phone-frame {
    display: none;
}

/* 模拟 APP 头部 */
.app-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-top: 8px;
    margin-bottom: 14px;
    font-weight: 700;
}

.app-tab {
    font-size: 15px;
    color: var(--color-text-3);
    padding: 4px 2px;
}

.app-tab.active {
    color: var(--color-text);
    position: relative;
}

.app-tab.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--color-primary);
    border-radius: 2px;
}

.app-search {
    margin-left: auto;
    color: var(--color-text-3);
}

/* 模拟分类 */
.app-categories {
    display: flex;
    gap: 12px;
    margin-bottom: 12px;
    overflow: hidden;
    font-size: 13px;
}

.cat {
    color: var(--color-text-3);
    padding: 4px 10px;
    border-radius: 100px;
    white-space: nowrap;
}

.cat.active {
    background: var(--color-text);
    color: var(--color-bg);
}

/* 模拟商品卡片 */
.app-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    padding-bottom: 60px;
}

.app-card {
    background: var(--color-card);
    border-radius: 14px;
    overflow: hidden;
    position: relative;
    box-shadow: var(--shadow-sm);
}

.card-img {
    height: 110px;
    width: 100%;
}

.card-img-phone {
    background:
        radial-gradient(circle at 30% 50%, #FFD93D 0%, transparent 50%),
        linear-gradient(135deg, #FFE6B0, #FFC8DD);
    position: relative;
}

.card-img-phone::after {
    content: '🐨';
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
}

.card-img-bottle {
    background: linear-gradient(135deg, #E8F4F8, #B8DCE8);
    position: relative;
}

.card-img-bottle::after {
    content: '🥤';
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
}

.card-img-blind {
    background: linear-gradient(135deg, #A4DBEF, #D7E8F3);
    position: relative;
}

.card-img-blind::after {
    content: '📦';
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    filter: blur(2px);
}

.blind-tag {
    position: absolute;
    top: 6px;
    right: 6px;
    background: var(--color-blue);
    color: var(--color-text);
    font-size: 10px;
    padding: 2px 8px;
    border-radius: 100px;
    z-index: 1;
}

.card-info {
    padding: 6px 8px 8px;
}

.card-title {
    font-size: 11px;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 4px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-meta {
    font-size: 9px;
    color: var(--color-text-3);
    margin-bottom: 6px;
}

.card-bottom {
    display: flex;
    justify-content: space-between;
    font-size: 9px;
    color: var(--color-text-2);
}

.like {
    color: #FF6B6B;
}

.card-tag {
    position: absolute;
    top: 6px;
    left: 6px;
    background: var(--color-primary);
    color: var(--color-text);
    font-size: 10px;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 100px;
}

.tag-swap {
    background: var(--color-primary);
}
.tag-gift {
    background: var(--color-pink);
    color: var(--color-text);
}

/* 底部导航 */
.app-bottom-nav {
    position: absolute;
    bottom: 16px;
    left: 16px;
    right: 16px;
    display: flex;
    justify-content: space-around;
    align-items: center;
    background: var(--color-card);
    border-radius: 24px;
    padding: 8px 0;
    box-shadow: var(--shadow-md);
    font-size: 18px;
}

.fab-post {
    width: 36px;
    height: 36px;
    background: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 800;
    font-family: var(--font-display);
    color: var(--color-text);
    box-shadow: 0 6px 16px rgba(212, 245, 90, 0.6);
}

/* 飘浮装饰 */
.float-item {
    position: absolute;
    width: 60px;
    height: 60px;
    background: var(--color-card);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    box-shadow: var(--shadow-md);
    animation: float-up-down 4s ease-in-out infinite;
    z-index: 3;
}

.float-1 {
    top: 10%;
    left: 5%;
    animation-delay: 0s;
    background: var(--color-pink-light);
}
.float-2 {
    top: 30%;
    right: 0;
    animation-delay: -1s;
    background: var(--color-orange-light);
}
.float-3 {
    bottom: 25%;
    left: 0;
    animation-delay: -2s;
    background: var(--color-blue-light);
}
.float-4 {
    bottom: 8%;
    right: 10%;
    animation-delay: -3s;
    background: var(--color-primary-light);
}

@keyframes float-up-down {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-15px) rotate(8deg); }
}

/* ================= 数据统计 ================= */
.stats {
    padding: 60px 0;
    background: var(--color-card);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.stats .container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    text-align: center;
}

.stat-card {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-num {
    font-family: var(--font-display);
    font-size: 56px;
    font-weight: 700;
    color: var(--color-text);
    line-height: 1;
}

.stat-suffix {
    font-family: var(--font-display);
    font-size: 36px;
    font-weight: 700;
    color: var(--color-text);
    margin-left: 2px;
}

.stat-label {
    margin-top: 8px;
    font-size: 14px;
    color: var(--color-text-2);
}

/* ================= 通用 section ================= */
.section-head {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 60px;
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: var(--color-primary-light);
    color: var(--color-text);
    border-radius: 100px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 20px;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(32px, 4.5vw, 52px);
    line-height: 1.2;
    letter-spacing: 1.5px;
    margin-bottom: 16px;
}

.section-desc {
    font-size: 17px;
    color: var(--color-text-2);
}

/* ================= 玩法区 ================= */
.features {
    padding: 100px 0;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.feature-card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 40px;
    position: relative;
    overflow: hidden;
    transition: all 0.4s ease;
    cursor: default;
}

.feature-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--color-primary-light), transparent);
    opacity: 0;
    transition: opacity 0.4s ease;
}

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

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

.feature-card > * { position: relative; z-index: 1; }

.feature-icon {
    width: 64px;
    height: 64px;
    border-radius: 20px;
    background: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    margin-bottom: 24px;
    transition: transform 0.4s ease;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(-5deg);
}

.feature-1 .feature-icon { background: var(--color-orange-light); }
.feature-2 .feature-icon { background: var(--color-pink-light); }
.feature-3 .feature-icon { background: var(--color-blue-light); }
.feature-4 .feature-icon { background: var(--color-mint-light); }

.feature-card h3 {
    font-family: var(--font-display);
    font-size: 28px;
    margin-bottom: 12px;
    letter-spacing: 1px;
}

.feature-card > p {
    color: var(--color-text-2);
    margin-bottom: 24px;
    line-height: 1.7;
}

.feature-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.feature-list li {
    font-size: 14px;
    color: var(--color-text-2);
}

/* ================= 流程 ================= */
.how-it-works {
    padding: 100px 0;
    background: var(--color-bg-warm);
}

.steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
}

.step {
    flex: 1;
    min-width: 200px;
    max-width: 220px;
    background: var(--color-card);
    border-radius: var(--radius-md);
    padding: 32px 24px;
    text-align: center;
    position: relative;
    transition: all 0.3s ease;
    border: 1px solid var(--color-border);
}

.step:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
}

.step-num {
    font-family: var(--font-display);
    font-size: 36px;
    color: var(--color-primary-dark);
    line-height: 1;
    margin-bottom: 12px;
}

.step h4 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
}

.step p {
    font-size: 13px;
    color: var(--color-text-2);
    line-height: 1.6;
    margin-bottom: 16px;
}

.step-icon {
    font-size: 36px;
    display: block;
}

.step-arrow {
    font-size: 24px;
    color: var(--color-primary-dark);
    font-weight: 700;
}

/* ================= 故事 ================= */
.stories {
    padding: 100px 0;
}

.story-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.story-card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 32px;
    position: relative;
    transition: all 0.3s ease;
}

.story-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary);
}

.story-quote {
    font-family: serif;
    font-size: 80px;
    line-height: 0.5;
    color: var(--color-primary);
    margin-bottom: 16px;
    font-weight: 700;
}

.story-text {
    color: var(--color-text-2);
    line-height: 1.7;
    margin-bottom: 24px;
    font-size: 15px;
}

.story-user {
    display: flex;
    align-items: center;
    gap: 12px;
    padding-top: 20px;
    border-top: 1px dashed var(--color-border);
}

.avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    background: var(--color-primary-light);
    flex-shrink: 0;
}

.avatar-1 { background: var(--color-orange-light); }
.avatar-2 { background: var(--color-pink-light); }
.avatar-3 { background: var(--color-blue-light); }

.user-name {
    font-weight: 700;
    font-size: 15px;
}

.user-meta {
    font-size: 12px;
    color: var(--color-text-3);
}

/* ================= 产品展示 ================= */
.showcase {
    padding: 100px 0;
    background: var(--color-bg-warm);
}

.showcase-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 24px;
    min-height: 600px;
}

.showcase-card {
    background: var(--color-card);
    border-radius: var(--radius-md);
    padding: 32px;
    border: 1px solid var(--color-border);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.showcase-main {
    grid-row: span 2;
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-card));
}

.showcase-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary);
}

.showcase-card h3 {
    font-family: var(--font-display);
    font-size: 22px;
    margin: 16px 0 8px;
    letter-spacing: 1px;
}

.showcase-main h3 {
    font-size: 28px;
}

.showcase-card p {
    color: var(--color-text-2);
    font-size: 14px;
    line-height: 1.7;
}

.showcase-visual {
    height: 200px;
    margin-bottom: 16px;
    position: relative;
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.showcase-main .showcase-visual {
    height: 320px;
}

/* Posts 视觉 */
.visual-posts {
    background: var(--color-bg);
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 12px;
    padding: 20px;
}

.mini-card {
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: transform 0.3s ease;
}

.mini-card:hover { transform: translateY(-3px) rotate(2deg); }
.mc-1 { background: linear-gradient(135deg, #FFE6B0, #FFD93D); }
.mc-2 { background: linear-gradient(135deg, #FFC1CC, #FFB5C2); }
.mc-3 { background: linear-gradient(135deg, #A4DBEF, #DCF1F8); }
.mc-4 { background: linear-gradient(135deg, #9BE3CD, #D9F4EA); }

/* Match 视觉 */
.visual-match {
    background: var(--color-bg);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.match-line {
    position: absolute;
    width: 80%;
    height: 1px;
    background: repeating-linear-gradient(
        90deg,
        var(--color-text-2) 0,
        var(--color-text-2) 4px,
        transparent 4px,
        transparent 8px
    );
    top: 50%;
    left: 10%;
}

.match-dot {
    position: absolute;
    width: 50px;
    height: 50px;
    background: var(--color-card);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    box-shadow: var(--shadow-md);
    animation: pulse 2s ease-in-out infinite;
}

.md-1 { top: 10%; left: 10%; animation-delay: 0s; }
.md-2 { top: 50%; right: 10%; transform: translateY(-50%); animation-delay: -0.5s; }
.md-3 { bottom: 10%; left: 50%; transform: translateX(-50%); animation-delay: -1s; }

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

/* Safe 视觉 */
.visual-safe {
    background: linear-gradient(135deg, var(--color-mint-light), var(--color-bg));
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.safe-circle {
    width: 120px;
    height: 120px;
    background: var(--color-mint);
    border-radius: 50%;
    opacity: 0.3;
    position: absolute;
    animation: ripple 2s ease-out infinite;
}

.lock-icon {
    position: relative;
    font-size: 56px;
    z-index: 1;
}

@keyframes ripple {
    0% { transform: scale(1); opacity: 0.3; }
    100% { transform: scale(1.5); opacity: 0; }
}

/* Env 视觉 */
.visual-env {
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-card));
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
}

.leaf {
    font-size: 56px;
    animation: swing 3s ease-in-out infinite;
    display: inline-block;
}

.leaf.l2 {
    animation-delay: -1.5s;
}

@keyframes swing {
    0%, 100% { transform: rotate(-10deg); }
    50% { transform: rotate(10deg); }
}

/* ================= APP 截图展示 ================= */
.screenshot-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    max-width: 1080px;
    margin: 0 auto;
}

.screenshot-item {
    text-align: center;
}

.phone-mock {
    position: relative;
    width: 260px;
    margin: 0 auto 24px;
    background: linear-gradient(145deg, #2D2A26 0%, #4A4540 100%);
    border-radius: 36px;
    padding: 12px;
    box-shadow:
        0 30px 60px -20px rgba(0, 0, 0, 0.25),
        0 18px 36px -18px rgba(0, 0, 0, 0.15),
        inset 0 0 0 2px rgba(255, 255, 255, 0.06);
    transition: transform 0.4s ease;
}

.phone-mock::before {
    content: '';
    position: absolute;
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 18px;
    background: #1a1815;
    border-radius: 0 0 12px 12px;
    z-index: 2;
}

.phone-mock img {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 24px;
    background: #fff;
}

/* Hero 中的样机：更大、更醒目、轻微倾斜 */
.hero-phone .phone-mock {
    width: 300px;
    margin: 0;
    padding: 14px;
    border-radius: 42px;
    transform: rotate(-3deg);
    box-shadow:
        0 40px 80px -20px rgba(0, 0, 0, 0.28),
        0 22px 44px -18px rgba(0, 0, 0, 0.18),
        inset 0 0 0 2px rgba(255, 255, 255, 0.06);
    z-index: 2;
}

.hero-phone .phone-mock::before {
    width: 90px;
    height: 22px;
}

.hero-phone .phone-mock img {
    border-radius: 28px;
}

.hero-phone:hover .phone-mock {
    transform: rotate(0deg) scale(1.03);
}

.screenshot-item:nth-child(2) .phone-mock {
    transform: translateY(-16px);
}

.screenshot-item:hover .phone-mock {
    transform: translateY(-8px) scale(1.02);
}

.screenshot-item:nth-child(2):hover .phone-mock {
    transform: translateY(-24px) scale(1.02);
}

.screenshot-item h3 {
    font-family: var(--font-display);
    font-size: 22px;
    margin-bottom: 8px;
    letter-spacing: 1px;
}

.screenshot-item p {
    color: var(--color-text-2);
    font-size: 14px;
    line-height: 1.7;
    max-width: 260px;
    margin: 0 auto;
}

/* ================= 下载区 ================= */
.download {
    padding: 100px 0;
}

.download-card {
    background: var(--color-text);
    border-radius: var(--radius-xl);
    padding: 60px;
    color: var(--color-bg);
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.download-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--color-primary), transparent 60%);
    opacity: 0.3;
    border-radius: 50%;
}

.download-card::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--color-pink), transparent 60%);
    opacity: 0.2;
    border-radius: 50%;
}

.download-content { position: relative; z-index: 1; }

.download-content .section-tag {
    background: rgba(212, 245, 90, 0.2);
    color: var(--color-primary);
}

.download-content h2 {
    font-family: var(--font-display);
    font-size: clamp(28px, 3.5vw, 44px);
    line-height: 1.2;
    letter-spacing: 1.5px;
    margin-bottom: 16px;
}

.download-content > p {
    color: rgba(251, 248, 238, 0.7);
    font-size: 16px;
    margin-bottom: 32px;
}

.download-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.store-btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 14px;
    color: var(--color-bg);
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.store-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.store-icon {
    width: 28px;
    height: 28px;
    flex-shrink: 0;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
}

.store-ios .store-icon {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'%3E%3Cpath d='M17.05 20.28c-.98.95-2.05.8-3.08.35-1.09-.46-2.09-.48-3.24 0-1.44.62-2.2.44-3.06-.35C2.79 15.25 3.51 7.59 9.05 7.31c1.35.07 2.29.74 3.08.8 1.18-.24 2.31-.93 3.57-.84 1.51.12 2.65.72 3.4 1.8-3.12 1.87-2.38 5.98.48 7.13-.57 1.5-1.31 2.99-2.54 4.09zM12.03 7.25c-.15-2.23 1.66-4.07 3.74-4.25.29 2.58-2.34 4.5-3.74 4.25z'/%3E%3C/svg%3E");
}

.store-android .store-icon {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'%3E%3Cpath d='M17.523 15.3414c-.5511 0-.9993-.4486-.9993-.9997s.4482-.9993.9993-.9993c.5511 0 .9993.4482.9993.9993.0001.5511-.4482.9997-.9993.9997m-11.046 0c-.5511 0-.9993-.4486-.9993-.9997s.4482-.9993.9993-.9993c.5511 0 .9993.4482.9993.9993 0 .5511-.4482.9997-.9993.9997m11.4045-6.02l1.9973-3.4592a.4179.4179 0 00-.1521-.5717.4185.4185 0 00-.5715.1521l-2.0223 3.503C15.5902 8.2439 13.8533 7.8508 12 7.8508s-3.5902.3931-5.1367 1.0729L4.841 5.4207a.418.418 0 00-.5715-.1521.4179.4179 0 00-.1521.5717L6.1148 9.3214C2.6195 11.1832 0 14.0323 0 17.4297v1.5h24v-1.5c0-3.3974-2.6195-6.2465-6.1185-8.1083'/%3E%3C/svg%3E");
}

.store-btn small {
    display: block;
    font-size: 11px;
    opacity: 0.7;
}

.store-btn strong {
    display: block;
    font-size: 16px;
    font-weight: 700;
}

.download-tip {
    color: rgba(251, 248, 238, 0.6);
    font-size: 13px;
}

.download-qr {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    z-index: 1;
}

.qr-wrapper {
    text-align: center;
}

.qr {
    width: 200px;
    height: 200px;
    background: var(--color-bg);
    border-radius: 24px;
    padding: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    position: relative;
    display: grid;
    grid-template-columns: repeat(10, 1fr);
    grid-template-rows: repeat(10, 1fr);
    gap: 1px;
}

.qr-grid {
    position: absolute;
    inset: 16px;
    background-image:
        repeating-linear-gradient(0deg, var(--color-text) 0 4px, transparent 4px 8px),
        repeating-linear-gradient(90deg, var(--color-text) 0 4px, transparent 4px 8px);
    opacity: 0.4;
}

.qr-corner {
    position: absolute;
    width: 36px;
    height: 36px;
    background: var(--color-text);
    border-radius: 6px;
    z-index: 1;
}

.qr-corner::after {
    content: '';
    position: absolute;
    inset: 6px;
    background: var(--color-bg);
    border-radius: 3px;
}

.qr-corner::before {
    content: '';
    position: absolute;
    inset: 12px;
    background: var(--color-text);
    border-radius: 1px;
}

.qr-corner-tl { top: 16px; left: 16px; }
.qr-corner-tr { top: 16px; right: 16px; }
.qr-corner-bl { bottom: 16px; left: 16px; }

.qr-logo {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    background: var(--color-primary);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 800;
    color: var(--color-text);
    z-index: 2;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.qr-wrapper > p {
    color: rgba(251, 248, 238, 0.7);
    font-size: 14px;
    margin-top: 16px;
}

/* ================= 加入我们 ================= */
.join {
    padding: 100px 0;
    text-align: center;
}

.join-content {
    max-width: 720px;
    margin: 0 auto;
}

.join h2 {
    font-family: var(--font-display);
    font-size: clamp(28px, 4vw, 48px);
    line-height: 1.2;
    letter-spacing: 1.5px;
    margin: 20px 0 24px;
}

.join p {
    color: var(--color-text-2);
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 36px;
}

/* ================= 页脚 ================= */
.footer {
    background: var(--color-text);
    color: var(--color-bg);
    padding: 60px 0 30px;
}

.footer .container {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.footer-top {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(251, 248, 238, 0.1);
}

.footer-brand .logo { color: var(--color-bg); }
.footer-brand .logo-text { font-size: 24px; }

.footer-desc {
    margin-top: 16px;
    color: rgba(251, 248, 238, 0.6);
    font-size: 14px;
    line-height: 1.7;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.footer-links h5 {
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: 1px;
}

.footer-links a {
    display: block;
    color: rgba(251, 248, 238, 0.6);
    font-size: 14px;
    margin-bottom: 12px;
    transition: color 0.2s ease;
}

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

.footer-bottom {
    text-align: center;
    color: rgba(251, 248, 238, 0.4);
    font-size: 13px;
}

.env-tag {
    color: var(--color-primary);
}

.footer-bottom .icp-info {
    margin-top: 6px;
    font-size: 12px;
}

.footer-bottom .icp-info a {
    color: rgba(251, 248, 238, 0.5);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-bottom .icp-info a:hover {
    color: var(--color-primary);
}

/* ================= 社区互动 ================= */
.community {
    padding: 100px 0;
}

.community-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 56px;
}

.community-card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 32px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.community-card::after {
    content: '';
    position: absolute;
    width: 90px;
    height: 90px;
    border-radius: 50%;
    background: var(--color-primary-light);
    top: -30px;
    right: -30px;
    opacity: 0.5;
    transition: all 0.3s ease;
}

.community-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary);
}

.community-card:hover::after {
    transform: scale(1.3);
}

.community-icon {
    width: 56px;
    height: 56px;
    background: var(--color-bg);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
    transition: transform 0.3s ease;
}

.community-card:hover .community-icon {
    transform: scale(1.1) rotate(-6deg);
}

.community-card h3 {
    font-family: var(--font-display);
    font-size: 22px;
    margin-bottom: 8px;
    letter-spacing: 1px;
    position: relative;
    z-index: 1;
}

.community-card p {
    color: var(--color-text-2);
    font-size: 14px;
    line-height: 1.7;
    position: relative;
    z-index: 1;
}

/* 动态流面板 */
.feed-panel {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-sm);
    max-width: 860px;
    margin: 0 auto;
}

.feed-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 28px;
    font-family: var(--font-display);
    font-size: 20px;
    letter-spacing: 1px;
}

.feed-head a {
    font-family: var(--font-zh);
    font-size: 13px;
    color: var(--color-primary-dark);
    font-weight: 600;
}

.feed-head a:hover {
    text-decoration: underline;
}

.feed-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.feed-item {
    display: flex;
    gap: 16px;
    padding: 16px;
    border-radius: var(--radius-md);
    transition: background 0.3s ease;
}

.feed-item:hover {
    background: var(--color-bg);
}

.feed-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
}

.av-1 { background: var(--color-orange-light); }
.av-2 { background: var(--color-pink-light); }
.av-3 { background: var(--color-blue-light); }

.feed-body {
    flex: 1;
    min-width: 0;
}

.feed-top {
    display: flex;
    align-items: baseline;
    gap: 10px;
    margin-bottom: 4px;
}

.feed-name {
    font-weight: 700;
    font-size: 14px;
}

.feed-time {
    font-size: 12px;
    color: var(--color-text-3);
}

.feed-text {
    font-size: 14px;
    color: var(--color-text-2);
    line-height: 1.7;
    margin-bottom: 10px;
}

.feed-actions {
    display: flex;
    gap: 20px;
    font-size: 13px;
    color: var(--color-text-3);
}

/* ================= 滚动动画 ================= */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* ================= 响应式 ================= */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero-subtitle { margin-left: auto; margin-right: auto; }
    .hero-cta { justify-content: center; }
    .hero-trust { justify-content: center; }
    .hero-phone { order: -1; }
    .phone-frame { transform: rotate(0); }
    .feature-grid { grid-template-columns: 1fr; }
    .story-grid { grid-template-columns: 1fr; }
    .showcase-grid {
        grid-template-columns: 1fr 1fr;
        grid-template-rows: auto;
    }
    .showcase-main {
        grid-column: span 2;
        grid-row: span 1;
    }
    .showcase-main .showcase-visual { height: 220px; }
    .download-card {
        grid-template-columns: 1fr;
        text-align: center;
        padding: 40px 24px;
        gap: 32px;
    }
    .download-buttons { justify-content: center; }
    .footer-top { grid-template-columns: 1fr; gap: 32px; }
    .stats .container {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .menu-toggle { display: flex; }
    .hero { padding: 110px 0 60px; }
    .hero-title { font-size: 40px; }
    .hero-subtitle { font-size: 15px; }
    .steps {
        flex-direction: column;
    }
    .step-arrow { transform: rotate(90deg); }
    .showcase-grid {
        grid-template-columns: 1fr;
    }
    .showcase-main {
        grid-column: span 1;
    }
    .footer-links {
        grid-template-columns: 1fr 1fr;
        gap: 24px;
    }
}

@media (max-width: 480px) {
    .container { padding: 0 16px; }
    .hero-title { font-size: 32px; }
    .hero-cta { flex-direction: column; width: 100%; }
    .btn-primary, .btn-secondary { justify-content: center; }
    .feature-card { padding: 24px; }
    .feature-card h3 { font-size: 22px; }
    .stat-num { font-size: 40px; }
    .stat-suffix { font-size: 24px; }
    .download-card { padding: 32px 20px; }
    .store-btn { flex: 1; }
    .footer-links { grid-template-columns: 1fr; }
    .phone-frame { display: none; }
    .float-item { width: 50px; height: 50px; font-size: 22px; }
}

/* 社区模块响应式 */
@media (max-width: 1024px) {
    .community-grid { grid-template-columns: repeat(2, 1fr); }
    .screenshot-grid { grid-template-columns: 1fr; gap: 56px; }
    .screenshot-item:nth-child(2) .phone-mock { transform: none; }
    .screenshot-item:hover .phone-mock,
    .screenshot-item:nth-child(2):hover .phone-mock { transform: translateY(-6px) scale(1.01); }
}

@media (max-width: 768px) {
    .community-grid { grid-template-columns: 1fr; }
    .feed-panel { padding: 24px; }
}

@media (max-width: 480px) {
    .feed-actions { flex-wrap: wrap; gap: 12px; }
}