/* ============================================
   SHENNONG HERBAL — B2B Website Stylesheet
   Ancient Wisdom, Modern Wellness
   ============================================ */

/* ===== Variables ===== */
:root {
    --color-primary: #0d4f3c;
    --color-primary-dark: #093528;
    --color-primary-light: #1a6b52;
    --color-gold: #c4954a;
    --color-gold-light: #d4a85e;
    --color-gold-dark: #a87a35;
    --color-cream: #f8f5ef;
    --color-cream-dark: #efe9dd;
    --color-white: #ffffff;
    --color-text: #1a1a1a;
    --color-text-muted: #5a5a5a;
    --color-text-light: #8a8a8a;
    --color-border: #e0ddd5;
    --color-success: #2d8659;
    --color-danger: #c44d4d;

    --font-serif: 'Cormorant Garamond', 'Noto Serif SC', serif;
    --font-cn: 'Noto Serif SC', serif;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
    --shadow-md: 0 8px 30px rgba(0,0,0,0.08);
    --shadow-lg: 0 20px 60px rgba(0,0,0,0.12);
    --shadow-gold: 0 8px 30px rgba(196,149,74,0.25);

    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 24px;
    --radius-xl: 32px;

    --container-max: 1200px;
    --nav-height: 72px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
}

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    background: var(--color-cream);
    line-height: 1.65;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

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

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    font-family: var(--font-sans);
    font-size: 15px;
    font-weight: 600;
    border-radius: 50px;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    letter-spacing: 0.3px;
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-dark) 100%);
    color: var(--color-white);
    box-shadow: var(--shadow-gold);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 36px rgba(196,149,74,0.4);
}

.btn-ghost {
    background: transparent;
    color: var(--color-white);
    border: 2px solid rgba(255,255,255,0.4);
}

.btn-ghost:hover {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.7);
}

.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn-outline:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

.btn-full {
    width: 100%;
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: var(--container-max);
    height: 100%;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    transition: opacity 0.3s;
}

.nav-logo:hover {
    opacity: 0.8;
}

.logo-cn {
    font-family: var(--font-cn);
    font-size: 22px;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 1px;
}

.logo-en {
    font-family: var(--font-serif);
    font-size: 15px;
    font-weight: 600;
    color: var(--color-gold);
    letter-spacing: 2px;
    text-transform: uppercase;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 36px;
}

.nav-menu a {
    font-size: 15px;
    font-weight: 500;
    color: var(--color-text-muted);
    transition: color 0.3s;
    position: relative;
}

.nav-menu a:hover {
    color: var(--color-primary);
}

.nav-menu a.nav-cta {
    background: var(--color-primary);
    color: var(--color-white) !important;
    padding: 10px 24px;
    border-radius: 50px;
    transition: all 0.3s;
}

.nav-menu a.nav-cta:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

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

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== Hero ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(160deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, var(--color-primary-light) 100%);
    overflow: hidden;
    padding: 120px 24px 80px;
}

.hero-bg-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(196,149,74,0.12) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(196,149,74,0.08) 0%, transparent 50%);
    pointer-events: none;
}

.hero-bg-pattern::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero-content {
    position: relative;
    max-width: var(--container-max);
    margin: 0 auto;
    width: 100%;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(196,149,74,0.4);
    border-radius: 50px;
    color: var(--color-gold-light);
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 32px;
    backdrop-filter: blur(10px);
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--color-gold);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.3); }
}

.hero-title {
    font-family: var(--font-serif);
    font-size: clamp(42px, 7vw, 88px);
    font-weight: 700;
    line-height: 1.1;
    color: var(--color-white);
    margin-bottom: 24px;
    letter-spacing: -1px;
}

.hero-title-accent {
    color: var(--color-gold-light);
    font-style: italic;
}

.hero-subtitle {
    font-size: clamp(16px, 2vw, 20px);
    color: rgba(255,255,255,0.8);
    max-width: 640px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

.hero-cta-group {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 72px;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    flex-wrap: wrap;
}

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

.stat-number {
    font-family: var(--font-serif);
    font-size: 42px;
    font-weight: 700;
    color: var(--color-gold-light);
    line-height: 1;
}

.stat-suffix {
    font-family: var(--font-serif);
    font-size: 24px;
    color: var(--color-gold-light);
    font-weight: 600;
}

.stat-label {
    display: block;
    font-size: 13px;
    color: rgba(255,255,255,0.6);
    margin-top: 8px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.hero-scroll-hint {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255,255,255,0.4);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, rgba(255,255,255,0.4), transparent);
    animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
    0% { transform: scaleY(0); transform-origin: top; }
    50% { transform: scaleY(1); transform-origin: top; }
    51% { transform-origin: bottom; }
    100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ===== Trust Bar ===== */
.trust-bar {
    background: var(--color-white);
    padding: 32px 0;
    border-bottom: 1px solid var(--color-border);
}

.trust-items {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 48px;
    flex-wrap: wrap;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--color-text-muted);
    font-size: 14px;
    font-weight: 500;
}

.trust-item svg {
    color: var(--color-gold);
    flex-shrink: 0;
}

/* ===== Section Header ===== */
.section-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 64px;
}

.section-label {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-gold);
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 16px;
}

.section-title {
    font-family: var(--font-serif);
    font-size: clamp(32px, 4vw, 48px);
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.2;
    margin-bottom: 16px;
}

.section-desc {
    font-size: 17px;
    color: var(--color-text-muted);
    line-height: 1.7;
}

/* ===== Products ===== */
.products {
    padding: 100px 0;
    background: var(--color-cream);
}

.products-grid {
    display: flex;
    flex-direction: column;
    gap: 80px;
}

.product-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.product-card-reverse .product-info {
    order: 2;
}

/* Product Visual */
.product-visual {
    position: relative;
    height: 480px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.product-visual-1 {
    background: linear-gradient(135deg, #2d6b4f 0%, #1a4a35 100%);
}

.product-visual-2 {
    background: linear-gradient(135deg, #b8862f 0%, #8a5e1a 100%);
}

.product-visual-3 {
    background: linear-gradient(135deg, #5a3d6b 0%, #3d2848 100%);
}

.product-ingredient-ring {
    position: absolute;
    width: 380px;
    height: 380px;
    border: 2px solid rgba(255,255,255,0.08);
    border-radius: 50%;
    animation: rotate 20s linear infinite;
}

.product-ingredient-ring::before {
    content: '';
    position: absolute;
    top: -6px;
    left: 50%;
    width: 10px;
    height: 10px;
    background: rgba(196,149,74,0.6);
    border-radius: 50%;
    transform: translateX(-50%);
}

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

/* Product Jar (CSS Art) */
.product-jar {
    position: relative;
    z-index: 2;
    animation: float 4s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

.jar-lid {
    width: 180px;
    height: 40px;
    background: linear-gradient(135deg, #c4954a 0%, #a87a35 100%);
    border-radius: 8px 8px 4px 4px;
    margin: 0 auto;
    position: relative;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.jar-lid::before {
    content: '';
    position: absolute;
    top: 4px;
    left: 8px;
    right: 8px;
    height: 3px;
    background: rgba(255,255,255,0.2);
    border-radius: 2px;
}

.jar-lid-2 {
    background: linear-gradient(135deg, #d4a85e 0%, #b8862f 100%);
}

.jar-lid-3 {
    background: linear-gradient(135deg, #8a6ba0 0%, #6b4d80 100%);
}

.jar-body {
    width: 200px;
    height: 240px;
    background: linear-gradient(135deg, rgba(255,255,255,0.15) 0%, rgba(255,255,255,0.05) 100%);
    border: 2px solid rgba(255,255,255,0.15);
    border-radius: 12px 12px 20px 20px;
    margin: -4px auto 0;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
    box-shadow: inset 0 -20px 40px rgba(0,0,0,0.2);
}

.jar-body-2 {
    background: linear-gradient(135deg, rgba(212,168,94,0.2) 0%, rgba(212,168,94,0.05) 100%);
}

.jar-body-3 {
    background: linear-gradient(135deg, rgba(138,107,160,0.2) 0%, rgba(138,107,160,0.05) 100%);
}

.jar-label {
    text-align: center;
}

.jar-label-cn {
    display: block;
    font-family: var(--font-cn);
    font-size: 28px;
    font-weight: 700;
    color: rgba(255,255,255,0.9);
    letter-spacing: 4px;
    margin-bottom: 6px;
}

.jar-label-en {
    display: block;
    font-family: var(--font-serif);
    font-size: 12px;
    color: rgba(255,255,255,0.5);
    letter-spacing: 3px;
    text-transform: uppercase;
}

/* Product Info */
.product-tag {
    display: inline-block;
    padding: 6px 16px;
    background: var(--color-cream-dark);
    color: var(--color-primary);
    font-size: 13px;
    font-weight: 600;
    border-radius: 50px;
    margin-bottom: 16px;
}

.product-name {
    font-family: var(--font-serif);
    font-size: 36px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 4px;
}

.product-name-cn {
    font-family: var(--font-cn);
    font-size: 16px;
    color: var(--color-gold);
    margin-bottom: 20px;
    font-weight: 500;
}

.product-desc {
    font-size: 16px;
    color: var(--color-text-muted);
    line-height: 1.75;
    margin-bottom: 24px;
}

.product-benefits {
    margin-bottom: 28px;
}

.product-benefits li {
    position: relative;
    padding-left: 28px;
    margin-bottom: 10px;
    font-size: 15px;
    color: var(--color-text-muted);
}

.product-benefits li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 7px;
    width: 16px;
    height: 16px;
    background: var(--color-primary);
    border-radius: 50%;
    background-image: url("data:image/svg+xml,%3Csvg width='10' height='10' viewBox='0 0 24 24' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath fill='white' d='M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: center;
    background-size: 10px;
}

.product-specs {
    display: flex;
    gap: 32px;
    padding: 20px 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.spec {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.spec span {
    font-size: 12px;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.spec strong {
    font-size: 16px;
    color: var(--color-text);
}

/* ===== Product Image Grid (New) ===== */
.products-image-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.product-img-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.4s ease;
    border: 1px solid var(--color-border);
}

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

.product-img-wrapper {
    position: relative;
    width: 100%;
    height: 320px;
    overflow: hidden;
    background: var(--color-cream-dark);
}

.product-img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.product-img-card:hover .product-img-wrapper img {
    transform: scale(1.06);
}

.product-img-tag {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 6px 14px;
    background: rgba(13, 79, 60, 0.92);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    border-radius: 50px;
    letter-spacing: 0.5px;
    backdrop-filter: blur(4px);
}

.product-img-info {
    padding: 28px 24px;
}

.product-img-info h3 {
    font-family: var(--font-serif);
    font-size: 24px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 4px;
}

.product-img-cn {
    font-family: var(--font-cn);
    font-size: 14px;
    color: var(--color-gold);
    margin-bottom: 14px;
    font-weight: 500;
}

.product-img-desc {
    font-size: 14px;
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-bottom: 18px;
}

.product-img-specs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding-top: 16px;
    border-top: 1px solid var(--color-border);
}

.product-img-specs span {
    font-size: 12px;
    color: var(--color-text-light);
    padding: 4px 10px;
    background: var(--color-cream);
    border-radius: 6px;
}

/* ===== Factory Images in Manufacturing ===== */
.mfg-factory-images {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 20px;
}

.mfg-factory-images img {
    width: 100%;
    height: 140px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    transition: transform 0.4s ease;
}

.mfg-factory-images img:hover {
    transform: scale(1.03);
}

.mfg-stat-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

/* ===== Highlighted Cert Cards ===== */
.cert-card-highlight {
    background: linear-gradient(135deg, rgba(196,149,74,0.08) 0%, rgba(196,149,74,0.03) 100%);
    border-color: rgba(196,149,74,0.3);
}

.cert-card-highlight .cert-badge {
    background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-dark) 100%);
    color: #fff;
}

/* ===== Advantages ===== */
.advantages {
    padding: 100px 0;
    background: var(--color-white);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.advantage-card {
    padding: 36px 28px;
    background: var(--color-cream);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    transition: all 0.3s ease;
}

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

.advantage-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border-radius: var(--radius-sm);
    color: var(--color-gold-light);
    margin-bottom: 24px;
}

.advantage-card h3 {
    font-family: var(--font-serif);
    font-size: 22px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 12px;
}

.advantage-card p {
    font-size: 15px;
    color: var(--color-text-muted);
    line-height: 1.7;
}

/* ===== Manufacturing ===== */
.manufacturing {
    padding: 100px 0;
    background: var(--color-primary-dark);
    position: relative;
    overflow: hidden;
}

.manufacturing::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url("data:image/svg+xml,%3Csvg width='80' height='80' viewBox='0 0 80 80' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' stroke='%23ffffff' stroke-opacity='0.02'%3E%3Cpath d='M0 40h80M40 0v80'/%3E%3C/g%3E%3C/svg%3E");
}

.manufacturing .section-label {
    color: var(--color-gold-light);
}

.manufacturing .section-title {
    color: var(--color-white);
}

.manufacturing .section-desc {
    color: rgba(255,255,255,0.7);
}

.manufacturing-content {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 60px;
    position: relative;
}

.mfg-process {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.mfg-step {
    display: flex;
    gap: 24px;
    padding: 24px;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius-md);
    transition: all 0.3s;
}

.mfg-step:hover {
    background: rgba(255,255,255,0.07);
    border-color: rgba(196,149,74,0.3);
}

.mfg-step-number {
    font-family: var(--font-serif);
    font-size: 32px;
    font-weight: 700;
    color: var(--color-gold);
    line-height: 1;
    flex-shrink: 0;
    min-width: 50px;
}

.mfg-step-content h4 {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: 8px;
}

.mfg-step-content p {
    font-size: 14px;
    color: rgba(255,255,255,0.6);
    line-height: 1.6;
}

.mfg-visual {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    height: fit-content;
    align-self: center;
}

.mfg-stat-card {
    padding: 32px 24px;
    background: rgba(196,149,74,0.08);
    border: 1px solid rgba(196,149,74,0.2);
    border-radius: var(--radius-md);
    text-align: center;
    transition: all 0.3s;
}

.mfg-stat-card:hover {
    background: rgba(196,149,74,0.12);
    transform: translateY(-4px);
}

.mfg-stat-big {
    font-family: var(--font-serif);
    font-size: 44px;
    font-weight: 700;
    color: var(--color-gold-light);
    line-height: 1;
    margin-bottom: 12px;
}

.mfg-stat-big span {
    font-size: 20px;
    font-weight: 500;
}

.mfg-stat-label {
    font-size: 13px;
    color: rgba(255,255,255,0.6);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ===== Certifications ===== */
.certifications {
    padding: 100px 0;
    background: var(--color-cream);
}

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

.cert-card {
    padding: 36px 28px;
    background: var(--color-white);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    text-align: center;
    transition: all 0.3s;
}

.cert-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.cert-badge {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: var(--color-gold-light);
    border-radius: 50%;
    font-family: var(--font-serif);
    font-size: 18px;
    font-weight: 700;
    letter-spacing: 1px;
    box-shadow: 0 8px 24px rgba(13,79,60,0.25);
}

.cert-badge span {
    font-size: 13px;
}

.cert-card h4 {
    font-family: var(--font-serif);
    font-size: 20px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 10px;
}

.cert-card p {
    font-size: 14px;
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* ===== Partnership ===== */
.partnership {
    padding: 100px 0;
    background: var(--color-white);
}

.partnership-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    align-items: stretch;
}

.partner-card {
    position: relative;
    padding: 40px 32px;
    background: var(--color-cream);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    transition: all 0.3s;
}

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

.partner-card-featured {
    background: linear-gradient(180deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    border-color: var(--color-gold);
    color: var(--color-white);
}

.partner-card-featured h3,
.partner-card-featured p,
.partner-card-featured li {
    color: var(--color-white);
}

.partner-card-featured .partner-tagline {
    color: rgba(255,255,255,0.6);
}

.partner-card-featured .partner-features li {
    color: rgba(255,255,255,0.8);
}

.partner-card-featured .partner-moq {
    background: rgba(255,255,255,0.08);
    border-color: rgba(255,255,255,0.15);
}

.partner-card-featured .partner-moq span {
    color: rgba(255,255,255,0.5);
}

.partner-badge-pop {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    padding: 6px 20px;
    background: var(--color-gold);
    color: var(--color-white);
    font-size: 12px;
    font-weight: 700;
    border-radius: 50px;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: var(--shadow-gold);
}

.partner-tier {
    margin-bottom: 20px;
}

.partner-tier-label {
    font-family: var(--font-serif);
    font-size: 14px;
    font-weight: 600;
    color: var(--color-gold);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.partner-card h3 {
    font-family: var(--font-serif);
    font-size: 26px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 6px;
}

.partner-tagline {
    font-size: 14px;
    color: var(--color-text-muted);
    margin-bottom: 24px;
}

.partner-features {
    flex-grow: 1;
    margin-bottom: 24px;
}

.partner-features li {
    position: relative;
    padding-left: 24px;
    margin-bottom: 10px;
    font-size: 14px;
    color: var(--color-text-muted);
}

.partner-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 7px;
    width: 6px;
    height: 6px;
    background: var(--color-gold);
    border-radius: 50%;
}

.partner-moq {
    padding: 16px;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    margin-bottom: 24px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.partner-moq span {
    font-size: 12px;
    color: var(--color-text-light);
    text-transform: uppercase;
}

.partner-moq strong {
    font-size: 16px;
    color: var(--color-text);
}

.partner-card-featured .partner-moq strong {
    color: var(--color-gold-light);
}

.partner-card .btn {
    width: 100%;
}

/* ===== FAQ ===== */
.faq {
    padding: 100px 0;
    background: var(--color-cream);
}

.faq-list {
    max-width: 820px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--color-border);
}

.faq-question {
    width: 100%;
    padding: 24px 0;
    background: none;
    border: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    font-family: var(--font-sans);
    font-size: 17px;
    font-weight: 600;
    color: var(--color-text);
    text-align: left;
    transition: color 0.3s;
}

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

.faq-icon {
    width: 24px;
    height: 24px;
    position: relative;
    flex-shrink: 0;
    margin-left: 16px;
}

.faq-icon::before,
.faq-icon::after {
    content: '';
    position: absolute;
    background: var(--color-gold);
    transition: all 0.3s;
}

.faq-icon::before {
    top: 50%;
    left: 0;
    width: 100%;
    height: 2px;
    transform: translateY(-50%);
}

.faq-icon::after {
    top: 0;
    left: 50%;
    width: 2px;
    height: 100%;
    transform: translateX(-50%);
}

.faq-item.active .faq-icon::after {
    transform: translateX(-50%) scaleY(0);
}

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

.faq-answer p {
    padding: 0 0 24px;
    font-size: 15px;
    color: var(--color-text-muted);
    line-height: 1.7;
}

.faq-item.active .faq-answer {
    max-height: 300px;
}

/* ===== Contact ===== */
.contact {
    padding: 100px 0;
    background: var(--color-white);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.3fr;
    gap: 60px;
    align-items: start;
}

.contact-info .section-label,
.contact-info .section-title {
    text-align: left;
}

.contact-desc {
    font-size: 16px;
    color: var(--color-text-muted);
    margin-bottom: 40px;
    line-height: 1.7;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-method {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.contact-method-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-cream);
    border-radius: var(--radius-sm);
    color: var(--color-primary);
    flex-shrink: 0;
}

.contact-label {
    display: block;
    font-size: 12px;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 2px;
}

.contact-method a,
.contact-method span:last-child {
    font-size: 15px;
    color: var(--color-text);
    font-weight: 500;
}

.contact-method a:hover {
    color: var(--color-primary);
}

/* Contact Form */
.contact-form-wrapper {
    position: relative;
}

.contact-form {
    padding: 40px;
    background: var(--color-cream);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.form-title {
    font-family: var(--font-serif);
    font-size: 24px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 28px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 15px;
    color: var(--color-text);
    background: var(--color-white);
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-gold);
    box-shadow: 0 0 0 3px rgba(196,149,74,0.1);
}

.form-group textarea {
    resize: vertical;
}

.checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--color-text-muted);
    cursor: pointer;
    padding: 8px 16px;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    transition: all 0.3s;
}

.checkbox-label:hover {
    border-color: var(--color-gold);
}

.checkbox-label input {
    width: auto;
    accent-color: var(--color-primary);
}

.checkbox-label input:checked + span {
    color: var(--color-primary);
    font-weight: 600;
}

.form-note {
    font-size: 12px;
    color: var(--color-text-light);
    text-align: center;
    margin-top: 16px;
}

.form-success {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-cream);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 40px;
}

.form-success.show {
    display: flex;
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

.success-icon {
    color: var(--color-success);
    margin-bottom: 20px;
}

.form-success h3 {
    font-family: var(--font-serif);
    font-size: 28px;
    color: var(--color-text);
    margin-bottom: 12px;
}

.form-success p {
    font-size: 15px;
    color: var(--color-text-muted);
}

/* ===== Footer ===== */
.footer {
    background: var(--color-primary-dark);
    color: rgba(255,255,255,0.7);
    padding: 64px 0 32px;
}

.footer-top {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 60px;
    margin-bottom: 48px;
}

.footer-brand p {
    font-size: 14px;
    line-height: 1.7;
    margin-top: 16px;
    max-width: 320px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-logo .logo-cn {
    color: var(--color-white);
}

.footer-logo .logo-en {
    color: var(--color-gold-light);
}

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

.footer-col h5 {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul li a {
    font-size: 14px;
    color: rgba(255,255,255,0.6);
    transition: color 0.3s;
}

.footer-col ul li a:hover {
    color: var(--color-gold-light);
}

.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.footer-bottom p {
    font-size: 13px;
    color: rgba(255,255,255,0.4);
    margin-bottom: 4px;
}

.footer-disclaimer {
    font-size: 12px !important;
    color: rgba(255,255,255,0.3) !important;
    font-style: italic;
}

/* ===== Floating CTA ===== */
.floating-cta {
    position: fixed;
    bottom: 24px;
    right: 24px;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 14px 24px;
    background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-dark) 100%);
    color: var(--color-white) !important;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    box-shadow: var(--shadow-gold);
    z-index: 900;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
}

.floating-cta.show {
    opacity: 1;
    transform: translateY(0);
}

.floating-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 36px rgba(196,149,74,0.45);
}

/* ===== Floating WhatsApp ===== */
.floating-whatsapp {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #25D366;
    color: #fff !important;
    border-radius: 50%;
    box-shadow: 0 6px 20px rgba(37,211,102,0.4);
    z-index: 901;
    opacity: 0;
    transform: translateY(20px) scale(0.8);
    transition: all 0.3s ease;
    animation: whatsappPulse 2s ease-in-out infinite;
}

.floating-whatsapp.show {
    opacity: 1;
    transform: translateY(0) scale(1);
}

.floating-whatsapp:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 28px rgba(37,211,102,0.55);
}

@keyframes whatsappPulse {
    0%, 100% { box-shadow: 0 6px 20px rgba(37,211,102,0.4); }
    50% { box-shadow: 0 6px 20px rgba(37,211,102,0.4), 0 0 0 12px rgba(37,211,102,0.12); }
}

/* When both buttons visible, stack them */
.floating-cta {
    bottom: 90px;
}

/* ===== Reveal Animation ===== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ===== Responsive ===== */
@media (max-width: 968px) {
    .advantages-grid,
    .cert-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .partnership-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }

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

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

    .product-card {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .product-card-reverse .product-info {
        order: 0;
    }

    .product-visual {
        height: 380px;
    }

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

    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: var(--color-white);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        box-shadow: var(--shadow-md);
        transform: translateY(-150%);
        transition: transform 0.3s ease;
    }

    .nav-menu.active {
        transform: translateY(0);
    }

    .nav-toggle {
        display: flex;
    }

    .hero-stats {
        gap: 32px;
    }

    .stat-number {
        font-size: 32px;
    }

    .trust-items {
        gap: 24px;
    }

    .trust-item {
        font-size: 12px;
    }

    .advantages-grid,
    .cert-grid {
        grid-template-columns: 1fr;
    }

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

    .contact-form {
        padding: 28px;
    }

    .section-header {
        margin-bottom: 48px;
    }

    .products-grid {
        gap: 60px;
    }

    .products-image-grid {
        grid-template-columns: 1fr;
    }

    .mfg-stat-row {
        grid-template-columns: 1fr;
    }

    .product-img-wrapper {
        height: 260px;
    }

    .floating-cta {
        bottom: 84px;
        padding: 12px 20px;
        font-size: 13px;
    }

    .floating-whatsapp {
        width: 50px;
        height: 50px;
        bottom: 20px;
        right: 20px;
    }
}

@media (max-width: 480px) {
    .hero-cta-group {
        flex-direction: column;
        width: 100%;
    }

    .hero-cta-group .btn {
        width: 100%;
    }

    .hero-stats {
        gap: 24px;
    }

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

    .product-specs {
        flex-direction: column;
        gap: 12px;
    }
}