/* =========================================================================
   赛洛芙生物 · 官网设计系统 v2.0
   优化方向：
   1. 增加 Hero 变体与品牌卡片组件
   2. 统一阴影、圆角、间距层级
   3. 新增合规提示、产品迷你卡、组合卡等组件
   4. 强化响应式与视觉层次感
   ========================================================================= */

:root {
    /* 品牌色彩系统 */
    --color-primary: #6B4EAB;          /* 赛洛芙品牌紫 */
    --color-primary-light: #8E76C4;
    --color-primary-dark: #4A3580;
    --color-primary-soft: #F7F5FB;

    --color-accent: #C4A77D;            /* 古铜金 - 高端感 */
    --color-accent-light: #E0CDB0;
    --color-accent-dark: #9B825E;
    --color-accent-soft: #FAF7F2;

    --color-green: #5A9A7D;             /* 赛洛芙妍小绿瓶 */
    --color-green-light: #E3F1EA;
    --color-green-soft: #F0F8F4;

    --color-gold: #B8935F;              /* 美知研金 */
    --color-gold-light: #FFF5E0;
    --color-gold-soft: #FEF9EF;

    /* 中性色 */
    --color-ink: #1A1A1F;              /* 主文字色 */
    --color-ink-soft: #4A4A55;         /* 副文字色 */
    --color-ink-muted: #8A8A95;        /* 弱化文字 */
    --color-line: #E5E5EA;             /* 分隔线 */
    --color-bg: #FFFFFF;               /* 主背景 */
    --color-bg-soft: #F7F5FB;          /* 软背景 - 紫调 */
    --color-bg-warm: #FAF7F2;          /* 暖背景 - 金调 */

    /* 语义色 */
    --color-success: #2C7A6B;
    --color-warning: #C49B3F;
    --color-error: #B83C3C;

    /* 字体系统 */
    --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Source Han Sans CN", sans-serif;
    --font-serif: "Source Han Serif CN", "Songti SC", "STSong", serif;
    --font-mono: "SF Mono", "JetBrains Mono", Consolas, monospace;

    /* 字号系统 */
    --fs-display: 4.5rem;       /* 64px */
    --fs-h1: 3rem;              /* 48px */
    --fs-h2: 2.25rem;           /* 36px */
    --fs-h3: 1.625rem;          /* 26px */
    --fs-h4: 1.25rem;           /* 20px */
    --fs-body: 1rem;            /* 16px */
    --fs-body-lg: 1.125rem;     /* 18px */
    --fs-small: 0.875rem;       /* 14px */
    --fs-nano: 0.75rem;         /* 12px */

    /* 间距系统 - 8px 基准 */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.5rem;
    --space-6: 2rem;
    --space-7: 3rem;
    --space-8: 4rem;
    --space-9: 6rem;
    --space-10: 8rem;

    /* 圆角 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-2xl: 32px;
    --radius-full: 9999px;

    /* 阴影 */
    --shadow-sm: 0 1px 2px rgba(26, 26, 31, 0.04);
    --shadow-md: 0 4px 12px rgba(26, 26, 31, 0.06);
    --shadow-lg: 0 12px 32px rgba(26, 26, 31, 0.08);
    --shadow-xl: 0 24px 64px rgba(26, 26, 31, 0.12);
    --shadow-product: 0 20px 40px rgba(0, 0, 0, 0.12);
    --shadow-glow: 0 0 40px rgba(107, 78, 171, 0.15);

    /* 容器 */
    --container-max: 1200px;
    --container-narrow: 880px;
    --container-wide: 1400px;
}

/* =========================================================================
   重置 + 基础
   ========================================================================= */

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    font-size: var(--fs-body);
    line-height: 1.6;
    color: var(--color-ink);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img, picture, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font: inherit; cursor: pointer; border: none; background: none; }

/* =========================================================================
   排版
   ========================================================================= */

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.25;
    letter-spacing: -0.02em;
    color: var(--color-ink);
}

h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }
h4 { font-size: var(--fs-h4); font-weight: 500; }

p { color: var(--color-ink-soft); line-height: 1.7; }

.text-display { font-size: var(--fs-display); font-weight: 700; letter-spacing: -0.03em; }
.text-eyebrow {
    font-size: var(--fs-nano);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-primary);
}
.text-muted { color: var(--color-ink-muted); }
.text-soft { color: var(--color-ink-soft); }
.text-white { color: #fff; }
.text-center { text-align: center; }

.font-serif { font-family: var(--font-serif); }

/* =========================================================================
   布局
   ========================================================================= */

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-5);
}

.container-narrow {
    max-width: var(--container-narrow);
    margin: 0 auto;
    padding: 0 var(--space-5);
}

.container-wide {
    max-width: var(--container-wide);
    margin: 0 auto;
    padding: 0 var(--space-5);
}

.section { padding: var(--space-9) 0; }
.section-sm { padding: var(--space-7) 0; }
.section-lg { padding: var(--space-10) 0; }
.section-bg-soft { background: var(--color-bg-soft); }
.section-bg-warm { background: var(--color-bg-warm); }

.grid { display: grid; gap: var(--space-5); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-col { display: flex; flex-direction: column; }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-5 { gap: var(--space-5); }
.gap-6 { gap: var(--space-6); }

.mt-4 { margin-top: var(--space-4); }
.mt-5 { margin-top: var(--space-5); }
.mt-6 { margin-top: var(--space-6); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-5 { margin-bottom: var(--space-5); }
.mb-6 { margin-bottom: var(--space-6); }

/* =========================================================================
   组件
   ========================================================================= */

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius-full);
    font-size: var(--fs-body);
    font-weight: 500;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
}
.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: transparent;
    color: var(--color-ink);
    border: 1px solid var(--color-line);
}
.btn-secondary:hover {
    background: var(--color-bg-soft);
    border-color: var(--color-primary);
}

.btn-ghost {
    background: transparent;
    color: var(--color-primary);
    padding: 0.5rem 0;
}
.btn-ghost:hover { color: var(--color-primary-dark); }

.btn-white {
    background: #fff;
    color: var(--color-primary);
}
.btn-white:hover {
    background: var(--color-bg-soft);
    transform: translateY(-1px);
}

.btn-arrow::after {
    content: '→';
    transition: transform 0.2s;
}
.btn-arrow:hover::after { transform: translateX(4px); }

/* 卡片 */
.card {
    background: #fff;
    border: 1px solid var(--color-line);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    transition: all 0.3s ease;
}
.card:hover {
    border-color: var(--color-primary-light);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.card-elevated {
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-lg);
    background: #fff;
    transition: all 0.3s ease;
}
.card-elevated:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-3px);
    border-color: var(--color-primary-light);
}

.card-border-top { border-top: 4px solid var(--color-primary); }
.card-border-top-green { border-top: 4px solid var(--color-green); }
.card-border-top-gold { border-top: 4px solid var(--color-gold); }
.card-border-top-accent { border-top: 4px solid var(--color-accent); }

/* 徽章 */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: 0.375rem 0.875rem;
    border-radius: var(--radius-full);
    font-size: var(--fs-nano);
    font-weight: 500;
    background: var(--color-bg-soft);
    color: var(--color-primary);
    border: 1px solid rgba(107, 78, 171, 0.15);
}
.badge-gold {
    background: var(--color-bg-warm);
    color: var(--color-accent);
    border-color: rgba(196, 167, 125, 0.3);
}
.badge-green {
    background: var(--color-green-soft);
    color: var(--color-green);
    border-color: rgba(90, 154, 125, 0.2);
}

/* 标签 */
.tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    font-size: var(--fs-nano);
    font-weight: 500;
    border-radius: var(--radius-sm);
    background: var(--color-bg-soft);
    color: var(--color-primary);
    letter-spacing: 0.05em;
}

/* =========================================================================
   导航
   ========================================================================= */

.nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--color-line);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-weight: 600;
    font-size: 1.125rem;
    letter-spacing: -0.01em;
}

.nav-logo-mark {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 700;
    font-size: 0.875rem;
    font-family: var(--font-serif);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-7);
}

.nav-link {
    font-size: var(--fs-small);
    color: var(--color-ink-soft);
    font-weight: 500;
    transition: color 0.15s;
    position: relative;
}
.nav-link:hover { color: var(--color-primary); }
.nav-link.active { color: var(--color-ink); }
.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-primary);
    border-radius: 2px;
}

.nav-cta {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

/* =========================================================================
   Hero 区域
   ========================================================================= */

.hero {
    padding: var(--space-10) 0 var(--space-9);
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #faf8ff 0%, #fff 60%);
    text-align: center;
}

.hero > .container {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero::before {
    content: '';
    position: absolute;
    top: -20%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--color-bg-soft) 0%, transparent 70%);
    z-index: 0;
}

.hero > .container {
    position: relative;
    z-index: 1;
}

.hero-dark {
    background: linear-gradient(135deg, #2d1b4e 0%, #4a3580 50%, #6B4EAB 100%);
    color: #fff;
}
.hero-dark::before {
    background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 70%);
}
.hero-dark .hero-title,
.hero-dark .hero-subtitle,
.hero-dark h1,
.hero-dark h2,
.hero-dark p {
    color: #fff;
}
.hero-dark .text-eyebrow {
    color: var(--color-accent-light);
}

.hero-gradient-bone {
    background: linear-gradient(135deg, #ebe7f3 0%, #ddd6ed 40%, #cfc4e6 100%);
}
.hero-gradient-bone .hero-title,
.hero-gradient-bone .hero-subtitle {
    color: var(--color-ink);
}

.hero-gradient-skin {
    background: linear-gradient(135deg, #f7f5fb 0%, #ede9f8 50%, #e5dff2 100%);
}

.hero-gradient-beauty {
    background: linear-gradient(145deg, #f8f4ef 0%, #efe8dc 50%, #e8dfd0 100%);
}
.hero-gradient-beauty .hero-title,
.hero-gradient-beauty .hero-subtitle {
    color: #3d3020;
}

.hero-eyebrow {
    margin-bottom: var(--space-5);
    text-align: center;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    line-height: 1.1;
    letter-spacing: -0.03em;
    font-weight: 700;
    margin-bottom: var(--space-5);
    max-width: 100%;
    text-align: center;
    margin-left: auto;
    margin-right: auto;
}

.hero-title .accent {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.25rem;
    line-height: 1.6;
    color: var(--color-ink-soft);
    margin-bottom: var(--space-6);
    max-width: 720px;
    text-align: center;
    margin-left: auto;
    margin-right: auto;
}

.hero-h1 {
    font-size: clamp(1.75rem, 3.5vw, 2.75rem);
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin: 0 auto var(--space-6);
    max-width: 920px;
    text-align: center;
    color: #fff;
}

.hero-cta {
    display: flex;
    gap: var(--space-4);
    flex-wrap: wrap;
}

.hero-meta {
    display: flex;
    gap: var(--space-7);
    margin-top: var(--space-7);
    padding-top: var(--space-6);
    border-top: 1px solid rgba(255,255,255,0.2);
}

.hero-meta-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.hero-meta-num {
    font-size: 1.75rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: -0.02em;
}

.hero-meta-label {
    font-size: var(--fs-small);
    color: rgba(255,255,255,0.7);
}

/* Hero 品牌卡片（首页双品牌） */
.hero-brand-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-5);
    max-width: 840px;
    margin: 0 auto var(--space-8);
}

.hero-brand-card {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(12px);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    text-align: center;
    transition: all 0.3s ease;
}
.hero-brand-card:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

.hero-brand-card .brand-tag {
    font-size: var(--fs-nano);
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: var(--space-3);
    opacity: 0.85;
}

.hero-brand-card .brand-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: var(--space-2);
}

.hero-brand-card .brand-title span {
    color: var(--color-accent-light);
}

.hero-brand-card .brand-desc {
    font-size: var(--fs-small);
    opacity: 0.75;
    line-height: 1.6;
}

.hero-slogan-pill {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-full);
    font-size: var(--fs-h2);
    font-weight: 800;
    color: var(--color-primary);
    letter-spacing: 0.03em;
}

.hero-tagline-pill {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    background: rgba(107, 78, 171, 0.08);
    border-radius: var(--radius-full);
    font-size: var(--fs-body);
    font-weight: 600;
    color: var(--color-primary);
    letter-spacing: 0.03em;
}

/* =========================================================================
   板块标题
   ========================================================================= */

.section-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto var(--space-8);
}

.section-header-left {
    text-align: left;
    max-width: 720px;
    margin-bottom: var(--space-7);
}

.section-eyebrow {
    margin-bottom: var(--space-4);
}

.section-title {
    font-size: clamp(1.875rem, 3.5vw, 2.5rem);
    margin-bottom: var(--space-4);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-ink-soft);
    line-height: 1.6;
}

/* =========================================================================
   三个"真"区块
   ========================================================================= */

.pillars {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-5);
}

.pillar {
    padding: var(--space-7) var(--space-6);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-lg);
    background: #fff;
    position: relative;
    transition: all 0.3s ease;
}
.pillar:hover {
    border-color: var(--color-primary-light);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.pillar-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: var(--color-bg-soft);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-5);
    font-size: 1.5rem;
}

.pillar-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-3);
}

.pillar-text {
    color: var(--color-ink-soft);
    line-height: 1.7;
    font-size: var(--fs-small);
}

/* =========================================================================
   品牌卡
   ========================================================================= */

.brand-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--color-line);
}

.brand-card {
    padding: var(--space-8) var(--space-7);
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
}

.brand-card-skin {
    background: linear-gradient(180deg, #fff 0%, var(--color-bg-soft) 100%);
}

.brand-card-bone {
    background: linear-gradient(180deg, #fff 0%, #F5F3EE 100%);
}

.brand-eyebrow {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--fs-nano);
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-primary);
}

.brand-eyebrow-bone { color: var(--color-accent); }

.brand-name {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.brand-name-cn {
    font-size: 1.125rem;
    color: var(--color-ink-muted);
    margin-top: -8px;
    font-family: var(--font-serif);
}

.brand-tagline {
    font-size: 1.125rem;
    color: var(--color-ink-soft);
    line-height: 1.6;
}

.brand-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    margin-top: var(--space-4);
}

.brand-feature {
    display: flex;
    gap: var(--space-3);
    font-size: var(--fs-small);
    color: var(--color-ink-soft);
}

.brand-feature::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-primary);
    flex-shrink: 0;
    margin-top: 8px;
}

.brand-card-bone .brand-feature::before { background: var(--color-accent); }

.brand-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-primary);
    font-weight: 500;
    font-size: var(--fs-small);
    margin-top: auto;
    padding-top: var(--space-4);
}
.brand-card-bone .brand-link { color: var(--color-accent); }

.brand-link::after {
    content: '→';
    transition: transform 0.2s;
}
.brand-link:hover::after { transform: translateX(4px); }

/* =========================================================================
   资质区
   ========================================================================= */

.certifications {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
}

.cert-card {
    text-align: center;
    padding: var(--space-6) var(--space-5);
    background: #fff;
    border: 1px solid var(--color-line);
    border-radius: var(--radius-lg);
    transition: all 0.3s;
}

.cert-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.cert-image {
    width: 100%;
    max-width: 240px;
    height: 280px;
    object-fit: cover;
    border-radius: var(--radius-md);
    margin: 0 auto var(--space-4);
    border: 1px solid var(--color-line);
}

.cert-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--space-2);
}

.cert-desc {
    font-size: var(--fs-small);
    color: var(--color-ink-muted);
}

/* =========================================================================
   5S 时间线
   ========================================================================= */

.timeline {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--space-4);
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 30px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-line);
    z-index: 0;
}

.timeline-step {
    text-align: center;
    position: relative;
    z-index: 1;
}

.timeline-dot {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: #fff;
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-4);
    font-weight: 700;
    font-size: 1.125rem;
    font-family: var(--font-serif);
}

.timeline-label {
    font-size: var(--fs-nano);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-primary);
    margin-bottom: var(--space-2);
}

.timeline-name {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--space-2);
}

.timeline-desc {
    font-size: var(--fs-small);
    color: var(--color-ink-muted);
    line-height: 1.6;
}

/* =========================================================================
   产品卡（产品页用）
   ========================================================================= */

.product-hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
    align-items: center;
    margin-bottom: var(--space-8);
}

.product-image-frame {
    background: var(--color-bg-soft);
    border-radius: var(--radius-xl);
    padding: var(--space-7);
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.product-image-frame::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent 0%, rgba(107, 78, 171, 0.05) 100%);
}

.product-image {
    max-width: 80%;
    max-height: 80%;
    object-fit: contain;
    filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.15));
    position: relative;
    z-index: 1;
}

.product-info-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    margin: var(--space-5) 0;
}

.product-info-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--color-line);
    font-size: var(--fs-small);
}

.product-info-item:last-child { border-bottom: none; }

.product-info-label {
    color: var(--color-ink-muted);
    font-weight: 500;
}

.product-info-value {
    color: var(--color-ink);
    font-weight: 500;
    text-align: right;
}

/* =========================================================================
   数据/特性网格
   ========================================================================= */

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-5);
}

.feature-card {
    background: #fff;
    border: 1px solid var(--color-line);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    transition: all 0.3s;
}

.feature-card:hover {
    border-color: var(--color-primary-light);
    box-shadow: var(--shadow-md);
}

.feature-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: -0.02em;
    margin-bottom: var(--space-3);
    line-height: 1;
}

.feature-name {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--space-2);
}

.feature-text {
    font-size: var(--fs-small);
    color: var(--color-ink-soft);
    line-height: 1.6;
}

/* =========================================================================
   产品矩阵
   ========================================================================= */

.product-matrix {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-4);
}

.product-card {
    background: #fff;
    border: 1px solid var(--color-line);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    text-align: left;
    transition: all 0.3s;
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.product-card-badge {
    align-self: flex-start;
    margin-bottom: var(--space-4);
}

.product-card-name {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-2);
}

.product-card-spec {
    font-size: var(--fs-small);
    color: var(--color-ink-muted);
    margin-bottom: var(--space-4);
    font-family: var(--font-mono);
}

.product-card-text {
    font-size: var(--fs-small);
    color: var(--color-ink-soft);
    line-height: 1.6;
    margin-bottom: var(--space-5);
}

.product-card-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    margin-top: auto;
    padding-top: var(--space-4);
    border-top: 1px solid var(--color-line);
}

.product-card-feature {
    font-size: var(--fs-nano);
    color: var(--color-ink-muted);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.product-card-feature::before {
    content: '✦';
    color: var(--color-primary);
    font-size: 0.7rem;
}

/* =========================================================================
   产品迷你卡片（用于三保养子产品）
   ========================================================================= */

.product-mini-card {
    background: #fff;
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
    padding: var(--space-3);
    text-align: center;
    transition: all 0.2s ease;
}
.product-mini-card:hover {
    border-color: var(--color-primary-light);
    box-shadow: var(--shadow-sm);
    transform: translateY(-2px);
}

.product-mini-card img {
    width: 100%;
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-2);
    object-fit: cover;
    aspect-ratio: 1;
}

.product-mini-card .name {
    font-size: var(--fs-small);
    font-weight: 600;
    margin-bottom: 2px;
}

.product-mini-card .spec {
    font-size: var(--fs-nano);
    color: var(--color-ink-muted);
}

/* =========================================================================
   组合方案卡
   ========================================================================= */

.combo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-5);
}

.combo-card {
    background: #fff;
    border: 1px solid var(--color-line);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

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

.combo-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-bottom: 1px solid var(--color-line);
}

.combo-card .content {
    padding: var(--space-4) var(--space-5);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.combo-card h4 {
    margin: 0 0 var(--space-2);
    font-size: 1.125rem;
}

.combo-card p {
    margin: 0;
    font-size: var(--fs-small);
    color: var(--color-ink-soft);
    line-height: 1.6;
}

/* =========================================================================
   合规提示
   ========================================================================= */

.compliance-notice {
    background: #fff;
    border: 2px solid var(--color-accent);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    max-width: 640px;
    margin: var(--space-5) auto 0;
}

.compliance-notice-inline {
    background: linear-gradient(135deg, #faf8ff 0%, #fff 100%);
    border-left: 4px solid var(--color-accent);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    padding: var(--space-4);
}

.compliance-notice-title {
    color: var(--color-accent);
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-2);
}

.compliance-notice-text {
    color: var(--color-ink-muted);
    font-size: var(--fs-small);
    line-height: 1.7;
    margin: 0;
}

/* =========================================================================
   表格
   ========================================================================= */

.spec-table {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-line);
}

.spec-table th,
.spec-table td {
    padding: var(--space-4) var(--space-5);
    text-align: left;
    border-bottom: 1px solid var(--color-line);
    font-size: var(--fs-small);
}

.spec-table th {
    background: var(--color-bg-soft);
    font-weight: 600;
    color: var(--color-ink);
    font-size: var(--fs-nano);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.spec-table tr:last-child td { border-bottom: none; }
.spec-table tr:hover { background: var(--color-bg-soft); }

/* =========================================================================
   页脚
   ========================================================================= */

.footer {
    background: var(--color-ink);
    color: rgba(255, 255, 255, 0.7);
    padding: var(--space-8) 0 var(--space-5);
    margin-top: var(--space-10);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-6);
    margin-bottom: var(--space-7);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    color: #fff;
    font-weight: 600;
    font-size: 1.125rem;
    margin-bottom: var(--space-4);
}

.footer-desc {
    font-size: var(--fs-small);
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.5);
    max-width: 36ch;
}

.footer-title {
    color: #fff;
    font-size: var(--fs-small);
    font-weight: 600;
    margin-bottom: var(--space-4);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.footer-link {
    display: block;
    font-size: var(--fs-small);
    color: rgba(255, 255, 255, 0.5);
    padding: var(--space-2) 0;
    transition: color 0.2s;
}
.footer-link:hover { color: #fff; }
.footer-link.active { color: #fff; }

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--space-5);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--fs-nano);
    color: rgba(255, 255, 255, 0.4);
    flex-wrap: wrap;
    gap: var(--space-3);
}

/* =========================================================================
   响应式
   ========================================================================= */

@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    .feature-grid { grid-template-columns: repeat(2, 1fr); }
    .product-matrix { grid-template-columns: repeat(2, 1fr); }
    .product-hero { grid-template-columns: 1fr; }
    .brand-split { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .certifications { grid-template-columns: repeat(2, 1fr); }
    .hero-brand-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    :root {
        --fs-display: 2.5rem;
        --fs-h1: 2rem;
        --fs-h2: 1.5rem;
    }

    .nav-menu { display: none; }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .feature-grid, .product-matrix, .certifications { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .pillars { grid-template-columns: 1fr; }
    .timeline { grid-template-columns: 1fr; gap: var(--space-5); }
    .timeline::before { display: none; }

    .hero { padding: var(--space-7) 0; }
    .hero-meta { flex-direction: column; gap: var(--space-4); }
    .section { padding: var(--space-7) 0; }
    .section-lg { padding: var(--space-8) 0; }

    .btn { padding: 0.75rem 1.25rem; font-size: var(--fs-small); }

    .hero-slogan-pill {
        font-size: var(--fs-h3);
        padding: var(--space-2) var(--space-4);
    }
    .hero-tagline-pill {
        font-size: var(--fs-small);
    }
}

/* =========================================================================
   动效
   ========================================================================= */

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-up {
    animation: fadeUp 0.6s ease-out both;
}

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

/* =========================================================================
   子页面专用组件
   ========================================================================= */

/* 小型 Hero */
.hero-sm {
    padding: var(--space-8) 0 var(--space-7);
}
.hero-sm .hero-title {
    font-size: clamp(2rem, 4vw, 3.5rem);
}

/* 产品图片展示 */
.product-gallery {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-5);
    align-items: start;
}

.product-image-main,
.product-image-secondary {
    background: var(--color-bg-soft);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.product-image-main img {
    max-width: 100%;
    max-height: 500px;
    object-fit: contain;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
}

.product-image-secondary img {
    max-width: 100%;
    max-height: 300px;
    object-fit: contain;
    border-radius: var(--radius-md);
}

/* 数据表格 */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-line);
    background: #fff;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--fs-small);
}

.data-table th,
.data-table td {
    padding: var(--space-3) var(--space-5);
    text-align: left;
    border-bottom: 1px solid var(--color-line);
    line-height: 1.6;
}

.data-table th {
    background: var(--color-bg-soft);
    font-weight: 600;
    color: var(--color-ink);
    text-transform: none;
    letter-spacing: normal;
    position: sticky;
    top: 0;
}

.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: var(--color-bg-soft); }

/* 卡片文字工具类 */
.card-text {
    color: var(--color-ink-soft);
    line-height: 1.7;
}

.card-hr {
    border: none;
    border-top: 1px solid var(--color-line);
    margin: var(--space-4) 0;
}

.card-title {
    color: var(--color-ink);
}

/* 5S 详细步骤（纵向时间轴） */
.timeline-step-full {
    display: flex;
    gap: var(--space-6);
    margin-bottom: var(--space-8);
    position: relative;
}

/* 产品详情左右布局（赛洛芙妍页） */
.product-detail-grid-mobile {
    grid-template-columns: 1fr 1fr !important;
}

@media (max-width: 768px) {
    .product-detail-grid-mobile,
    .product-detail-grid-mobile-reverse {
        grid-template-columns: 1fr !important;
    }
}

.timeline-step-full:not(:last-child)::after {
    content: '';
    position: absolute;
    left: 26px;
    top: 56px;
    bottom: calc(-1 * var(--space-8));
    width: 2px;
    background: var(--color-line);
}

.step-badge {
    flex-shrink: 0;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 1rem;
    font-family: var(--font-serif);
    position: relative;
    z-index: 1;
}

.step-content {
    flex: 1;
    padding-bottom: var(--space-2);
}

/* 步骤图标颜色 */
.step-badge-primary { background: linear-gradient(135deg, var(--color-primary), #9F8CD4); }
.step-badge-accent { background: linear-gradient(135deg, var(--color-accent), #e8d5b7); }
.step-badge-green { background: linear-gradient(135deg, #6BAF8C, #8ED4AA); }

/* 大号展示图片 */
.product-showcase {
    position: relative;
    max-width: 650px;
    margin: 0 auto;
}
.product-showcase img {
    width: 100%;
    border-radius: var(--radius-xl);
    box-shadow: 0 24px 72px rgba(45, 27, 78, 0.2), 0 8px 24px rgba(0, 0, 0, 0.1);
}
.product-showcase-caption {
    text-align: center;
    color: var(--color-ink-muted);
    font-size: var(--fs-small);
    margin-top: var(--space-5);
    line-height: 1.8;
}

/* 信息胶囊 */
.info-pill {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-full);
    font-size: var(--fs-nano);
    font-weight: 500;
    background: var(--color-bg-soft);
    color: var(--color-primary);
}

/* 引用语样式 */
.quote-bar {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-4);
    color: var(--color-accent);
    font-style: italic;
    font-size: var(--fs-body-lg);
    margin-top: var(--space-6);
}

/* =========================================================================
   信任背书横幅
   ========================================================================= */

.trust-bar {
    background: #fff;
    padding: var(--space-5) 0;
    border-bottom: 1px solid var(--color-line);
}

.trust-bar-inner {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-6) var(--space-8);
    font-size: var(--fs-body);
    color: var(--color-ink-soft);
}

.trust-bar-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.trust-bar-item::before {
    content: '✓';
    color: var(--color-primary);
    font-weight: 700;
}

/* =========================================================================
   全站联系方式条（每页固定 · 放大展示 · 利于搜索引擎抓取）
   ========================================================================= */

.contact-bar {
    background: linear-gradient(135deg, #2d1b4e 0%, #4a3580 55%, #6B4EAB 100%);
    color: #fff;
    padding: var(--space-8) 0;
    margin-top: var(--space-9);
}

/* 紧邻联系方式条时，去掉页脚默认上间距，避免留白过大 */
.contact-bar + .footer { margin-top: 0; }

.contact-bar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-7);
    flex-wrap: wrap;
}

.contact-bar-lead { flex: 1 1 260px; min-width: 240px; }

.contact-bar-eyebrow {
    font-size: var(--fs-nano);
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-accent-light);
    margin-bottom: var(--space-3);
}

.contact-bar-title {
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-2);
    line-height: 1.2;
}

.contact-bar-sub {
    font-size: var(--fs-body);
    color: rgba(255, 255, 255, 0.78);
    line-height: 1.6;
}

.contact-bar-phones {
    display: flex;
    gap: var(--space-7);
    flex-wrap: wrap;
}

.contact-phone {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.contact-phone-label {
    font-size: var(--fs-nano);
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.6);
}

.contact-phone-number {
    font-size: clamp(1.5rem, 3.5vw, 2.25rem);
    font-weight: 800;
    color: #fff;
    letter-spacing: 0.01em;
    font-family: var(--font-mono);
    line-height: 1.1;
    transition: color 0.2s;
}

a.contact-phone-number:hover { color: var(--color-accent-light); }

.contact-bar-meta {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    font-size: var(--fs-small);
    color: rgba(255, 255, 255, 0.82);
}

.contact-bar-meta a { color: rgba(255, 255, 255, 0.9); font-weight: 500; }
.contact-bar-meta a:hover { color: #fff; }

.contact-bar-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-2);
}
.contact-bar-item::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-accent-light);
    margin-top: 8px;
    flex-shrink: 0;
}

@media (max-width: 768px) {
    .contact-bar-inner { flex-direction: column; align-items: flex-start; }
    .contact-bar-phones { width: 100%; gap: var(--space-5); }
}