/* ============================================
   上海德韵 / Shanghai Derain Bio-tech
   Global Stylesheet
   ============================================ */

:root {
    --green-900: #0a3d2e;
    --green-700: #0d8069;
    --green-500: #2aa589;
    --green-100: #e7f3ee;
    --gold-700: #8a6a3b;
    --gold-500: #c9a062;
    --gold-100: #f8f1e1;
    --ink-900: #1a2e2a;
    --ink-700: #3a4a47;
    --ink-500: #6b7671;
    --ink-300: #c4cdc9;
    --ink-100: #e9eee9;
    --paper: #fafaf6;
    --white: #ffffff;
    --danger: #c53b3b;
    --shadow-sm: 0 2px 8px rgba(13, 128, 105, 0.06);
    --shadow-md: 0 8px 28px rgba(13, 128, 105, 0.10);
    --shadow-lg: 0 16px 48px rgba(13, 128, 105, 0.15);
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --transition: 0.35s cubic-bezier(.4,.0,.2,1);
}

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

html { scroll-behavior: smooth; }

body {
    font-family: "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
    color: var(--ink-900);
    background: var(--paper);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--green-700); }

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

.container {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ========== Header ========== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: saturate(160%) blur(16px);
    -webkit-backdrop-filter: saturate(160%) blur(16px);
    border-bottom: 1px solid var(--ink-100);
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 0;
    gap: 32px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand__logo {
    width: 44px;
    height: 44px;
    display: grid;
    place-items: center;
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, var(--green-700), var(--green-500));
    color: #fff;
    font-family: "Cormorant Garamond", "Songti SC", serif;
    font-weight: 600;
    font-size: 22px;
    letter-spacing: 1px;
}

.brand__name {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.brand__name-cn {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink-900);
    letter-spacing: 2px;
}

.brand__name-en {
    font-size: 11px;
    color: var(--ink-500);
    letter-spacing: 1.5px;
    text-transform: uppercase;
}

.nav {
    display: flex;
    gap: 36px;
    flex: 1;
    justify-content: center;
}

.nav a {
    font-size: 15px;
    font-weight: 500;
    color: var(--ink-700);
    position: relative;
    padding: 6px 0;
}

.nav a::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 0;
    width: 0;
    height: 2px;
    background: var(--green-700);
    transition: all var(--transition);
    transform: translateX(-50%);
}

.nav a:hover::after, .nav a.active::after {
    width: 100%;
}

.nav a.active { color: var(--green-700); }

.header-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 9px 20px;
    background: var(--green-700);
    color: #fff;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 500;
    transition: all var(--transition);
}

.header-cta:hover {
    background: var(--green-900);
    color: #fff;
    transform: translateY(-1px);
}

/* ========== Hero ========== */
.hero {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #f3f9f4 0%, #fafaf6 60%);
    padding: 88px 0 96px;
}

.hero::before {
    content: '';
    position: absolute;
    top: -200px;
    right: -200px;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(13, 128, 105, 0.10) 0%, transparent 70%);
    border-radius: 50%;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -150px;
    left: -100px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(201, 160, 98, 0.10) 0%, transparent 70%);
    border-radius: 50%;
}

.hero__inner {
    display: grid;
    grid-template-columns: 1.05fr 1fr;
    gap: 64px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero__eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background: rgba(13, 128, 105, 0.10);
    color: var(--green-700);
    border-radius: 999px;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 24px;
}

.hero__eyebrow .dot {
    width: 6px;
    height: 6px;
    background: var(--green-700);
    border-radius: 50%;
}

.hero__title {
    font-size: 56px;
    line-height: 1.15;
    font-weight: 700;
    color: var(--ink-900);
    margin-bottom: 20px;
    letter-spacing: -1px;
}

.hero__title em {
    font-style: normal;
    background: linear-gradient(120deg, var(--green-700), var(--green-500));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero__subtitle {
    font-size: 18px;
    color: var(--ink-500);
    margin-bottom: 36px;
    max-width: 540px;
}

.hero__cta-row {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 500;
    transition: all var(--transition);
    cursor: pointer;
    border: 1px solid transparent;
}

.btn--primary {
    background: var(--green-700);
    color: #fff;
}

.btn--primary:hover {
    background: var(--green-900);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn--outline {
    background: transparent;
    color: var(--ink-900);
    border-color: var(--ink-300);
}

.btn--outline:hover {
    border-color: var(--green-700);
    color: var(--green-700);
}

.hero__stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    max-width: 480px;
}

.stat__num {
    font-family: "Cormorant Garamond", "Songti SC", serif;
    font-size: 36px;
    font-weight: 600;
    color: var(--green-700);
    line-height: 1;
}

.stat__label {
    font-size: 13px;
    color: var(--ink-500);
    margin-top: 6px;
}

.hero__visual {
    position: relative;
    aspect-ratio: 1 / 1;
    border-radius: 50%;
    background: linear-gradient(135deg, #e7f3ee 0%, #f8f1e1 100%);
    box-shadow: var(--shadow-lg);
    display: grid;
    place-items: center;
    overflow: hidden;
}

.hero__visual::before {
    content: '';
    position: absolute;
    inset: 24px;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.7), transparent 50%);
}

.hero__visual-inner {
    position: relative;
    text-align: center;
    color: var(--green-900);
    padding: 0 32px;
}

.hero__visual-cn {
    font-family: "Songti SC", "STSong", serif;
    font-size: 64px;
    font-weight: 500;
    letter-spacing: 8px;
    color: var(--green-900);
    margin-bottom: 16px;
}

.hero__visual-sub {
    font-size: 14px;
    letter-spacing: 4px;
    color: var(--gold-700);
    text-transform: uppercase;
    margin-bottom: 24px;
}

.hero__visual-stamp {
    display: inline-block;
    padding: 6px 16px;
    border: 1px solid var(--gold-500);
    border-radius: 999px;
    font-size: 12px;
    color: var(--gold-700);
    letter-spacing: 1.5px;
}

/* ========== Sections ========== */
.section {
    padding: 96px 0;
}

.section--alt {
    background: #fff;
}

.section__head {
    text-align: center;
    margin-bottom: 56px;
}

.section__eyebrow {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(13, 128, 105, 0.08);
    color: var(--green-700);
    border-radius: 999px;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 16px;
    letter-spacing: 1px;
}

.section__title {
    font-size: 40px;
    font-weight: 700;
    color: var(--ink-900);
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.section__title em {
    font-style: normal;
    color: var(--green-700);
}

.section__subtitle {
    font-size: 16px;
    color: var(--ink-500);
    max-width: 640px;
    margin: 0 auto;
}

/* ========== Features Grid ========== */
.features {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.feature {
    padding: 32px 28px;
    background: #fff;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--ink-100);
    transition: all var(--transition);
}

.feature:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--green-100);
}

.feature__icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, var(--green-100), rgba(13, 128, 105, 0.05));
    display: grid;
    place-items: center;
    margin-bottom: 20px;
    color: var(--green-700);
    font-size: 24px;
}

.feature__title {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink-900);
    margin-bottom: 10px;
}

.feature__desc {
    font-size: 14px;
    color: var(--ink-500);
    line-height: 1.7;
}

/* ========== Products ========== */
.products {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
}

.product {
    background: #fff;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
    border: 1px solid var(--ink-100);
    display: flex;
    flex-direction: column;
}

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

.product__media {
    aspect-ratio: 4/3;
    background: linear-gradient(135deg, #f3f9f4, #fafaf6);
    display: grid;
    place-items: center;
    padding: 32px;
    position: relative;
    overflow: hidden;
}

.product__media svg {
    max-height: 100%;
    width: auto;
}

.product__tag {
    position: absolute;
    top: 14px;
    left: 14px;
    padding: 4px 12px;
    background: var(--green-700);
    color: #fff;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 1px;
}

.product__tag.gold { background: var(--gold-500); }
.product__tag.red { background: var(--danger); }

.product__body {
    padding: 22px 22px 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.product__cat {
    font-size: 12px;
    color: var(--green-700);
    letter-spacing: 1.5px;
    text-transform: uppercase;
    margin-bottom: 8px;
}

.product__name {
    font-size: 17px;
    font-weight: 600;
    color: var(--ink-900);
    line-height: 1.4;
    margin-bottom: 8px;
    min-height: 48px;
}

.product__desc {
    font-size: 13px;
    color: var(--ink-500);
    line-height: 1.6;
    margin-bottom: 16px;
    flex: 1;
}

.product__meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 16px;
    border-top: 1px dashed var(--ink-100);
}

.product__price {
    display: flex;
    flex-direction: column;
}

.product__price-label {
    font-size: 11px;
    color: var(--ink-500);
    letter-spacing: 1px;
}

.product__price-num {
    font-size: 22px;
    color: var(--green-700);
    font-weight: 600;
    line-height: 1.2;
}

.product__price-num small {
    font-size: 12px;
    color: var(--ink-500);
    margin-left: 2px;
    font-weight: normal;
}

.product__link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 8px 16px;
    border-radius: 999px;
    background: var(--green-700);
    color: #fff;
    font-size: 13px;
    font-weight: 500;
    transition: all var(--transition);
}

.product__link:hover {
    background: var(--green-900);
    color: #fff;
    gap: 8px;
}

/* ========== Categories tabs ========== */
.cat-tabs {
    display: flex;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.cat-tab {
    padding: 10px 24px;
    background: #fff;
    border: 1px solid var(--ink-100);
    border-radius: 999px;
    font-size: 14px;
    color: var(--ink-700);
    cursor: pointer;
    transition: all var(--transition);
}

.cat-tab:hover, .cat-tab.active {
    background: var(--green-700);
    color: #fff;
    border-color: var(--green-700);
}

/* ========== Story / About ========== */
.story {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.story__visual {
    position: relative;
    aspect-ratio: 4/5;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--green-700), var(--green-900));
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    display: grid;
    place-items: center;
    color: #fff;
    padding: 40px;
}

.story__visual::before {
    content: '';
    position: absolute;
    top: -100px;
    left: -100px;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(201, 160, 98, 0.3), transparent 60%);
    border-radius: 50%;
}

.story__visual-inner {
    position: relative;
    text-align: center;
}

.story__visual-year {
    font-family: "Cormorant Garamond", "Songti SC", serif;
    font-size: 120px;
    font-weight: 600;
    color: var(--gold-500);
    line-height: 1;
    margin-bottom: 16px;
}

.story__visual-text {
    font-size: 18px;
    line-height: 1.6;
    letter-spacing: 4px;
}

.story__body h2 {
    font-size: 36px;
    font-weight: 700;
    color: var(--ink-900);
    margin-bottom: 24px;
    line-height: 1.3;
}

.story__body p {
    font-size: 16px;
    color: var(--ink-700);
    margin-bottom: 18px;
}

.story__list {
    list-style: none;
    margin-top: 24px;
}

.story__list li {
    padding: 12px 0;
    border-bottom: 1px dashed var(--ink-100);
    display: flex;
    gap: 16px;
    align-items: flex-start;
    font-size: 14px;
    color: var(--ink-700);
}

.story__list li::before {
    content: '';
    flex: 0 0 24px;
    width: 24px;
    height: 24px;
    margin-top: 2px;
    background: var(--green-100);
    color: var(--green-700);
    border-radius: 50%;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230d8069' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'%3E%3C/polyline%3E%3C/svg%3E");
    background-size: 14px;
    background-position: center;
    background-repeat: no-repeat;
}

/* ========== Trust / Certifications ========== */
.trust {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.trust-item {
    text-align: center;
    padding: 32px 24px;
    background: #fff;
    border-radius: var(--radius-md);
    border: 1px solid var(--ink-100);
    transition: all var(--transition);
}

.trust-item:hover {
    border-color: var(--green-100);
    box-shadow: var(--shadow-sm);
}

.trust-item__seal {
    width: 88px;
    height: 88px;
    margin: 0 auto 20px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--gold-100), #fff);
    display: grid;
    place-items: center;
    border: 2px solid var(--gold-500);
    color: var(--gold-700);
    font-family: "Songti SC", serif;
    font-weight: 600;
    font-size: 14px;
    letter-spacing: 1px;
    text-align: center;
    line-height: 1.2;
    padding: 8px;
}

.trust-item__title {
    font-size: 15px;
    font-weight: 600;
    color: var(--ink-900);
    margin-bottom: 8px;
}

.trust-item__sub {
    font-size: 12px;
    color: var(--ink-500);
    line-height: 1.5;
}

/* ========== CTA Strip ========== */
.cta-strip {
    background: linear-gradient(135deg, var(--green-900), var(--green-700));
    color: #fff;
    border-radius: var(--radius-lg);
    padding: 56px 64px;
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 32px;
    position: relative;
    overflow: hidden;
}

.cta-strip::before {
    content: '';
    position: absolute;
    top: -80px;
    right: -80px;
    width: 320px;
    height: 320px;
    background: radial-gradient(circle, rgba(201, 160, 98, 0.25), transparent 60%);
    border-radius: 50%;
}

.cta-strip h3 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 12px;
    position: relative;
}

.cta-strip p {
    color: rgba(255, 255, 255, 0.85);
    font-size: 16px;
    max-width: 560px;
    position: relative;
}

.btn--gold {
    background: var(--gold-500);
    color: var(--ink-900);
    font-weight: 600;
    position: relative;
    z-index: 1;
}

.btn--gold:hover {
    background: var(--gold-700);
    color: #fff;
    transform: translateY(-2px);
}

/* ========== Footer ========== */
.site-footer {
    background: var(--ink-900);
    color: rgba(255, 255, 255, 0.7);
    padding: 72px 0 28px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-grid h5 {
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 20px;
    letter-spacing: 1px;
}

.footer-grid ul {
    list-style: none;
}

.footer-grid li {
    margin-bottom: 10px;
    font-size: 14px;
}

.footer-grid a:hover { color: #fff; }

.footer-about {
    font-size: 13px;
    line-height: 1.7;
    margin: 16px 0;
    color: rgba(255, 255, 255, 0.6);
}

.footer-meta {
    padding-top: 28px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    font-size: 12px;
    color: rgba(255, 255, 255, 0.5);
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

/* ========== Page Header (inner pages) ========== */
.page-header {
    background: linear-gradient(135deg, #f3f9f4 0%, #fafaf6 60%);
    padding: 80px 0 64px;
    text-align: center;
    border-bottom: 1px solid var(--ink-100);
}

.page-header h1 {
    font-size: 44px;
    font-weight: 700;
    color: var(--ink-900);
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.page-header p {
    font-size: 16px;
    color: var(--ink-500);
    max-width: 640px;
    margin: 0 auto;
}

/* ========== Products Page (filter) ========== */
.product-grid {
    padding: 64px 0 96px;
}

.product-grid__inner {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 40px;
}

.filter {
    position: sticky;
    top: 100px;
    align-self: start;
    background: #fff;
    padding: 24px;
    border-radius: var(--radius-md);
    border: 1px solid var(--ink-100);
}

.filter h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--ink-900);
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--ink-100);
}

.filter ul {
    list-style: none;
    margin-bottom: 24px;
}

.filter li {
    margin-bottom: 8px;
}

.filter a {
    display: block;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--ink-700);
    transition: all var(--transition);
}

.filter a:hover, .filter a.active {
    background: var(--green-100);
    color: var(--green-700);
}

.filter__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
}

.filter__tag {
    display: inline-block;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    background: var(--green-100);
    color: var(--green-700);
    font-size: 13px;
    font-weight: 500;
}

/* ========== Product Detail ========== */
.detail {
    padding: 64px 0 96px;
}

.detail__crumbs {
    font-size: 13px;
    color: var(--ink-500);
    margin-bottom: 32px;
}

.detail__crumbs a:hover { color: var(--green-700); }

.detail__crumbs .sep { margin: 0 8px; opacity: 0.5; }

.detail__grid {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 64px;
    margin-bottom: 80px;
}

.detail__media {
    aspect-ratio: 1/1;
    background: linear-gradient(135deg, #f3f9f4, #fafaf6);
    border-radius: var(--radius-lg);
    display: grid;
    place-items: center;
    padding: 48px;
    border: 1px solid var(--ink-100);
}

.detail__title {
    font-size: 34px;
    font-weight: 700;
    color: var(--ink-900);
    margin-bottom: 12px;
    line-height: 1.3;
}

.detail__sub {
    color: var(--green-700);
    font-size: 15px;
    letter-spacing: 1px;
    margin-bottom: 24px;
}

.detail__price {
    padding: 20px 0;
    border-top: 1px dashed var(--ink-100);
    border-bottom: 1px dashed var(--ink-100);
    margin-bottom: 28px;
    display: flex;
    align-items: baseline;
    gap: 16px;
}

.detail__price-label {
    font-size: 13px;
    color: var(--ink-500);
    letter-spacing: 1px;
}

.detail__price-num {
    font-size: 40px;
    color: var(--green-700);
    font-weight: 700;
}

.detail__price-num small {
    font-size: 16px;
    color: var(--ink-500);
    margin-left: 4px;
    font-weight: normal;
}

.detail__desc {
    color: var(--ink-700);
    margin-bottom: 32px;
    font-size: 15px;
}

.detail__specs {
    margin: 32px 0;
}

.detail__specs h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--ink-900);
    margin-bottom: 16px;
}

.specs-list {
    list-style: none;
    border-top: 1px solid var(--ink-100);
}

.specs-list li {
    padding: 12px 0;
    border-bottom: 1px solid var(--ink-100);
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 16px;
    font-size: 14px;
}

.specs-list .label {
    color: var(--ink-500);
}

.specs-list .value {
    color: var(--ink-700);
}

/* ========== Banner ========== */
.detail-banner {
    background: linear-gradient(135deg, #f3f9f4, #fafaf6);
    border-radius: var(--radius-lg);
    padding: 56px;
    text-align: center;
    border: 1px solid var(--ink-100);
}

.detail-banner h3 {
    font-size: 28px;
    font-weight: 700;
    color: var(--ink-900);
    margin-bottom: 16px;
}

.detail-banner p {
    color: var(--ink-500);
    max-width: 540px;
    margin: 0 auto 32px;
}

/* ========== About ========== */
.about-intro {
    padding: 96px 0;
}

.about-intro__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-intro h2 {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--ink-900);
    line-height: 1.3;
}

.about-intro p {
    color: var(--ink-700);
    font-size: 16px;
    margin-bottom: 18px;
}

.about-visual {
    aspect-ratio: 4/3;
    background: linear-gradient(135deg, var(--green-700), var(--green-900));
    border-radius: var(--radius-lg);
    display: grid;
    place-items: center;
    color: #fff;
    text-align: center;
    padding: 40px;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.about-visual::before, .about-visual::after {
    content: '';
    position: absolute;
    border-radius: 50%;
}

.about-visual::before {
    top: -50px; right: -50px;
    width: 200px; height: 200px;
    background: radial-gradient(circle, rgba(201, 160, 98, 0.25), transparent 60%);
}

.about-visual::after {
    bottom: -50px; left: -50px;
    width: 200px; height: 200px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.10), transparent 60%);
}

.about-visual__inner { position: relative; }

.about-visual__num {
    font-family: "Cormorant Garamond", "Songti SC", serif;
    font-size: 88px;
    font-weight: 600;
    line-height: 1;
    color: var(--gold-500);
    margin-bottom: 8px;
}

.about-visual__sub {
    font-size: 16px;
    letter-spacing: 4px;
    color: rgba(255, 255, 255, 0.85);
}

.about-stats {
    background: #fff;
    padding: 72px 0;
}

.about-stats__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    text-align: center;
}

.stat-block {
    padding: 24px;
}

.stat-block__num {
    font-family: "Cormorant Garamond", "Songti SC", serif;
    font-size: 56px;
    font-weight: 600;
    color: var(--green-700);
    line-height: 1;
}

.stat-block__label {
    margin-top: 12px;
    font-size: 14px;
    color: var(--ink-500);
    letter-spacing: 1px;
}

.about-values {
    padding: 96px 0;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-top: 56px;
}

.value {
    padding: 36px 32px;
    background: #fff;
    border-radius: var(--radius-md);
    border: 1px solid var(--ink-100);
    transition: all var(--transition);
}

.value:hover {
    border-color: var(--green-100);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.value__icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, var(--green-100), rgba(13, 128, 105, 0.05));
    color: var(--green-700);
    display: grid;
    place-items: center;
    margin-bottom: 20px;
    font-family: "Songti SC", serif;
    font-size: 22px;
    font-weight: 600;
}

.value__title {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink-900);
    margin-bottom: 12px;
}

.value__desc {
    color: var(--ink-500);
    font-size: 14px;
    line-height: 1.7;
}

.timeline {
    padding: 96px 0;
    background: #fff;
}

.timeline__list {
    list-style: none;
    max-width: 720px;
    margin: 56px auto 0;
    position: relative;
}

.timeline__list::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 100px;
    width: 1px;
    background: var(--ink-100);
}

.timeline__item {
    display: grid;
    grid-template-columns: 100px 1fr;
    gap: 32px;
    padding: 16px 0 32px;
    position: relative;
}

.timeline__year {
    color: var(--green-700);
    font-family: "Cormorant Garamond", "Songti SC", serif;
    font-size: 22px;
    font-weight: 600;
    text-align: right;
}

.timeline__item::before {
    content: '';
    position: absolute;
    left: 96px;
    top: 28px;
    width: 9px;
    height: 9px;
    background: var(--green-700);
    border-radius: 50%;
    box-shadow: 0 0 0 4px var(--paper);
}

.timeline__body h5 {
    font-size: 17px;
    font-weight: 600;
    color: var(--ink-900);
    margin-bottom: 6px;
}

.timeline__body p {
    color: var(--ink-500);
    font-size: 14px;
}

/* ========== Contact ========== */
.contact-grid {
    padding: 80px 0 96px;
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 64px;
    align-items: start;
}

.contact-info {
    background: #fff;
    padding: 40px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--ink-100);
}

.contact-info h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--ink-900);
    margin-bottom: 16px;
}

.contact-info > p {
    color: var(--ink-500);
    margin-bottom: 32px;
    font-size: 15px;
}

.contact-row {
    display: flex;
    gap: 16px;
    padding: 20px 0;
    border-top: 1px solid var(--ink-100);
}

.contact-row__icon {
    flex: 0 0 44px;
    height: 44px;
    background: var(--green-100);
    color: var(--green-700);
    border-radius: 50%;
    display: grid;
    place-items: center;
}

.contact-row__body h5 {
    font-size: 13px;
    color: var(--ink-500);
    margin-bottom: 4px;
    font-weight: 500;
    letter-spacing: 1px;
}

.contact-row__body p, .contact-row__body a {
    color: var(--ink-900);
    font-size: 16px;
    font-weight: 500;
}

.contact-form {
    background: #fff;
    padding: 40px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--ink-100);
}

.contact-form h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--ink-900);
    margin-bottom: 8px;
}

.contact-form > p {
    color: var(--ink-500);
    margin-bottom: 28px;
    font-size: 14px;
}

.form-row {
    margin-bottom: 16px;
}

.form-row label {
    display: block;
    font-size: 13px;
    color: var(--ink-700);
    margin-bottom: 6px;
    font-weight: 500;
}

.form-row input,
.form-row textarea,
.form-row select {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--ink-300);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-family: inherit;
    color: var(--ink-900);
    transition: all var(--transition);
    background: var(--paper);
}

.form-row input:focus,
.form-row textarea:focus,
.form-row select:focus {
    outline: none;
    border-color: var(--green-700);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(13, 128, 105, 0.10);
}

.form-row textarea {
    resize: vertical;
    min-height: 100px;
}

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

.form-success {
    margin-top: 16px;
    padding: 14px 18px;
    background: var(--green-100);
    color: var(--green-900);
    border-radius: var(--radius-sm);
    font-size: 14px;
    display: none;
}

.form-success.show { display: block; }

.map-block {
    margin: 24px 0 0;
    aspect-ratio: 16/9;
    background: linear-gradient(135deg, #e7f3ee, #fafaf6);
    border-radius: var(--radius-md);
    display: grid;
    place-items: center;
    border: 1px solid var(--ink-100);
    color: var(--green-700);
    text-align: center;
    padding: 24px;
}

/* ========== Responsive ========== */
@media (max-width: 980px) {
    .hero__inner,
    .story,
    .about-intro__grid,
    .detail__grid,
    .contact-grid { grid-template-columns: 1fr; gap: 48px; }

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

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

    .nav { display: none; }

    .hero__title { font-size: 40px; }
    .section__title { font-size: 30px; }
    .page-header h1 { font-size: 34px; }

    .cta-strip { grid-template-columns: 1fr; padding: 36px; }

    .product-grid__inner { grid-template-columns: 1fr; }
    .filter { position: static; }

    .timeline__list::before { left: 60px; }
    .timeline__item { grid-template-columns: 60px 1fr; gap: 20px; }
    .timeline__item::before { left: 56px; }
}

@media (max-width: 560px) {
    .features,
    .products,
    .trust,
    .values-grid { grid-template-columns: 1fr; }

    .hero { padding: 56px 0 64px; }
    .section { padding: 64px 0; }
    .hero__title { font-size: 32px; }
    .section__title { font-size: 26px; }
}