/**
 * Sdfrchem 主题全局样式（SNS - SNEAKERSNSTUFF 仿站）
 * 极简黑白 + 荧光绿强调。BEM 命名 + sdf- 前缀。
 */

/* ============================================================
   1. CSS 变量
   ============================================================ */
:root {
	--sdf-color-bg: #fff;
	--sdf-color-text: #000;
	--sdf-color-heading: #000;
	--sdf-color-muted: #555;
	--sdf-color-line: #000;
	--sdf-color-accent: #60FF7A;
	--sdf-color-sale: #b0120e;
	--sdf-color-backdrop: rgba(255, 255, 255, 0.9);

	--sdf-font-sans: 'SNSInter', 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;

	--sdf-header-h: 62px;
	--sdf-duration: 0.28s;
	--sdf-duration-fast: 0.12s;
	--sdf-gutter: 32px;
	--sdf-container: 1290px;
}

/* ============================================================
   2. Reset / Base
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }

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

body {
	margin: 0;
	font-family: var(--sdf-font-sans);
	font-size: 14px;
	line-height: 20px;
	color: var(--sdf-color-text);
	background: var(--sdf-color-bg);
	-webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 { margin: 0; font-weight: 500; color: var(--sdf-color-heading); }
p { margin: 0; }
a { color: var(--sdf-color-text); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; display: block; }
button { font-family: inherit; cursor: pointer; }
ul, ol { margin: 0; padding: 0; list-style: none; }
input, select, textarea { font-family: inherit; font-size: inherit; }

.sdf-container {
	width: 100%;
	max-width: var(--sdf-container);
	margin: 0 auto;
	padding: 0 var(--sdf-gutter);
}

.sdf-screen-reader-text {
	position: absolute; width: 1px; height: 1px;
	overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap;
}

.sdf-site { overflow-x: hidden; }

/* ============================================================
   3. 通用组件
   ============================================================ */
.sdf-btn {
	display: inline-flex; align-items: center; justify-content: center;
	background: var(--sdf-color-text); color: var(--sdf-color-bg);
	border: 1px solid var(--sdf-color-text);
	padding: 0 24px; min-height: 44px;
	font-size: 14px; font-weight: 400; letter-spacing: 0.5px;
	text-transform: uppercase; text-decoration: none;
	transition: background var(--sdf-duration-fast), color var(--sdf-duration-fast), opacity var(--sdf-duration-fast);
}
.sdf-btn:hover { background: var(--sdf-color-bg); color: var(--sdf-color-text); text-decoration: none; }
.sdf-btn--light {
	background: var(--sdf-color-bg); color: var(--sdf-color-text);
	border-color: var(--sdf-color-line);
}
.sdf-btn--light:hover { background: var(--sdf-color-text); color: var(--sdf-color-bg); }
/* 强调按钮：荧光绿底黑字（对标站结算/订阅/筛选按钮） */
.sdf-btn--accent {
	background: var(--sdf-color-accent); color: var(--sdf-color-text);
	border: 1px solid var(--sdf-color-text);
}
.sdf-btn--accent:hover { background: var(--sdf-color-text); color: var(--sdf-color-accent); }

/* 面包屑 */
.sdf-breadcrumb {
	display: flex; align-items: center; flex-wrap: wrap; gap: 6px;
	font-size: 12px; letter-spacing: 0.5px; text-transform: uppercase;
	padding: 18px 0; border-bottom: 1px solid var(--sdf-color-line);
}
.sdf-breadcrumb a:hover { text-decoration: underline; }
.sdf-breadcrumb__sep { opacity: 0.5; }

/* 区块标题（对标站 14px w500 ls1px uppercase） */
.sdf-section { padding: 48px 0; }
.sdf-section__head {
	display: flex; align-items: center; justify-content: space-between;
	margin-bottom: 8px; padding: 0 16px 12px;
}
.sdf-section__title { font-size: 14px; font-weight: 500; text-transform: uppercase; letter-spacing: 1px; }
.sdf-section__link { font-size: 14px; text-transform: uppercase; letter-spacing: 0.5px; }
.sdf-section__link:hover { text-decoration: underline; }

/* ============================================================
   4. Header
   ============================================================ */
.sdf-header {
	position: sticky; top: 0; z-index: 1000;
	background: var(--sdf-color-bg);
	border-bottom: 1px solid var(--sdf-color-line);
}
.sdf-header__inner {
	display: grid;
	grid-template-areas: "logo menu actions";
	grid-template-columns: auto auto 1fr;
	align-items: center;
	gap: 24px;
	height: var(--sdf-header-h);
	padding: 0 var(--sdf-gutter);
	max-width: var(--sdf-container);
	margin: 0 auto;
}
.sdf-header__logo { grid-area: logo; }
.sdf-header__logo-link { display: inline-flex; align-items: center; font-size: 14px; font-weight: 400; letter-spacing: 0; text-decoration: none; }
.sdf-header__logo-link:hover { text-decoration: none; }
.sdf-header__logo-img { height: 25px; width: auto; }

/* 主导航 */
.sdf-nav { grid-area: menu; }
.sdf-nav__list { display: flex; align-items: center; gap: 22px; }
.sdf-nav__item { position: relative; }
.sdf-nav__link {
	display: inline-flex; align-items: center; gap: 4px;
	font-size: 13px; letter-spacing: 0.5px; text-transform: uppercase;
	padding: 20px 0; color: var(--sdf-color-text); text-decoration: none;
	background: none; border: none;
}
.sdf-nav__link:hover { text-decoration: underline; }

/* 下拉分组菜单 */
.sdf-nav__panel {
	position: absolute; top: 100%; left: 50%; transform: translateX(-50%);
	background: var(--sdf-color-bg);
	border: 1px solid var(--sdf-color-line);
	border-top: none;
	min-width: 640px;
	padding: 28px;
	display: none;
	z-index: 1100;
}
.sdf-nav__item:hover .sdf-nav__panel { display: block; }
.sdf-nav__group { margin-bottom: 20px; }
.sdf-nav__group:last-child { margin-bottom: 0; }
.sdf-nav__group-title {
	font-size: 12px; letter-spacing: 1px; text-transform: uppercase;
	margin-bottom: 10px; font-weight: 500;
}
.sdf-nav__group-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px 24px; }
.sdf-nav__group-link { font-size: 13px; color: var(--sdf-color-text); text-decoration: none; display: block; padding: 3px 0; }
.sdf-nav__group-link:hover { text-decoration: underline; }
.sdf-nav__group-link--all { font-weight: 500; margin-top: 4px; }

/* 右侧 actions */
.sdf-header__actions { grid-area: actions; display: flex; align-items: center; justify-content: flex-end; gap: 14px; }
.sdf-icon-btn {
	display: inline-flex; align-items: center; justify-content: center;
	width: 32px; height: 32px; padding: 0; background: none; border: none;
	color: var(--sdf-color-text); position: relative;
}
.sdf-icon-btn svg { width: 20px; height: 20px; fill: currentColor; color: var(--sdf-color-text); }
.sdf-header__cart-count {
	position: absolute; top: 0; right: 0;
	min-width: 16px; height: 16px; padding: 0 3px;
	border-radius: 8px; background: var(--sdf-color-text); color: var(--sdf-color-bg);
	font-size: 10px; line-height: 16px; text-align: center;
}

/* 移动端汉堡按钮 */
.sdf-nav__trigger {
	display: none;
	width: 40px; height: 40px; padding: 0;
	background: none; border: none; color: var(--sdf-color-text);
	align-items: center; justify-content: center;
}
.sdf-nav__trigger svg { width: 24px; height: 24px; fill: currentColor; }

/* 移动端菜单（抽屉） */
.sdf-mobile-menu {
	position: fixed; top: var(--sdf-header-h); left: 0; right: 0; bottom: 0;
	background: var(--sdf-color-bg);
	transform: translateX(100%);
	transition: transform var(--sdf-duration) ease;
	overflow-y: auto; z-index: 1200;
}
.sdf-mobile-menu.is-open { transform: translateX(0); }
.sdf-mobile-menu__list { padding: 16px var(--sdf-gutter) 60px; }
.sdf-mobile-menu__item { border-bottom: 1px solid var(--sdf-color-line); }
.sdf-mobile-menu__link {
	display: flex; align-items: center; justify-content: space-between;
	padding: 16px 0; font-size: 15px; letter-spacing: 0.5px; text-transform: uppercase; text-decoration: none;
}
.sdf-mobile-menu__panel { display: none; padding-bottom: 12px; }
.sdf-mobile-menu__item.is-open > .sdf-mobile-menu__panel { display: block; }
.sdf-mobile-menu__sub { padding-left: 12px; }
.sdf-mobile-menu__sub-link { display: block; padding: 8px 0; font-size: 14px; text-transform: uppercase; }

/* 全屏搜索弹窗 */
.sdf-search-modal {
	position: fixed; inset: 0; z-index: 2000;
	background: var(--sdf-color-backdrop);
	display: none; align-items: flex-start; justify-content: center;
	padding: 80px var(--sdf-gutter) 40px;
}
.sdf-search-modal.is-open { display: flex; }
.sdf-search-modal__close {
	position: absolute; top: 20px; right: 24px;
	background: none; border: none; font-size: 28px; line-height: 1; color: var(--sdf-color-text);
}
.sdf-search-modal__form { width: 100%; max-width: 640px; border-bottom: 1px solid var(--sdf-color-line); display: flex; }
.sdf-search-modal__input {
	flex: 1; border: none; background: transparent; padding: 16px 8px;
	font-size: 22px; color: var(--sdf-color-text); outline: none;
}
.sdf-search-modal__submit { background: none; border: none; font-size: 14px; text-transform: uppercase; padding: 0 12px; }
.sdf-search-results { width: 100%; max-width: 640px; margin-top: 24px; }
.sdf-search-results__item {
	display: flex; align-items: center; gap: 16px;
	padding: 12px 0; border-bottom: 1px solid rgba(0,0,0,0.1); text-decoration: none;
}
.sdf-search-results__item:hover { text-decoration: underline; }
.sdf-search-results__img { width: 56px; height: 56px; object-fit: cover; }
.sdf-search-results__name { font-size: 14px; }
.sdf-search-results__price { margin-left: auto; font-size: 14px; }

/* ============================================================
   5. 产品卡 / 网格（对标站：1:1 图 + 14px 品牌标签 + 无 hover 效果）
   ============================================================ */
.sdf-product-card { position: relative; }
.sdf-product-card__media {
	position: relative; aspect-ratio: 1 / 1; overflow: hidden; background: #f4f4f4;
}
.sdf-product-card__img {
	width: 100%; height: 100%; object-fit: cover;
}
.sdf-product-card__badge {
	position: absolute; top: 10px; left: 10px;
	background: var(--sdf-color-bg); color: var(--sdf-color-text);
	font-size: 11px; letter-spacing: 0.5px; text-transform: uppercase;
	padding: 4px 8px;
}
.sdf-product-card__badge--sale { color: var(--sdf-color-sale); }
.sdf-product-card__content { padding: 16px 8px; }
.sdf-product-card__tag {
	font-size: 14px; font-weight: 500; text-transform: uppercase; display: block; margin-bottom: 4px;
}
.sdf-product-card__title {
	font-size: 14px; font-weight: 400; line-height: 20px; margin-bottom: 0;
}
.sdf-product-card__title a:hover { text-decoration: underline; }
.sdf-product-card__price { font-size: 14px; font-weight: 400; margin-top: 4px; }
.sdf-product-card__price del { color: var(--sdf-color-muted); margin-right: 6px; }
.sdf-product-card__price ins { text-decoration: none; }
.sdf-product-card__price .sdf-price-sale { color: var(--sdf-color-sale); }

/* 网格 */
.sdf-grid {
	display: grid; grid-template-columns: repeat(6, 1fr); gap: 8px;
}
@media (max-width: 1200px) { .sdf-grid { grid-template-columns: repeat(4, 1fr); } }
@media (max-width: 1024px) { .sdf-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 640px)  { .sdf-grid { grid-template-columns: repeat(2, 1fr); } }

/* 横滑条 */
.sdf-scroller {
	display: flex; gap: 8px; overflow-x: auto;
	scroll-snap-type: x mandatory;
	-webkit-overflow-scrolling: touch;
	overscroll-behavior-x: contain;
	padding: 0 16px 16px;
}
.sdf-scroller::-webkit-scrollbar { display: none; }
.sdf-scroller__item { flex: 0 0 25%; scroll-snap-align: start; }
@media (max-width: 1024px) { .sdf-scroller__item { flex-basis: 33.33%; } }
@media (max-width: 640px) { .sdf-scroller__item { flex-basis: 45%; } }
@media (max-width: 480px) { .sdf-scroller__item { flex-basis: 65%; } }

/* ============================================================
   6. Banner 网格（对标站：3 组 × 3 列静态格子拼贴，非轮播；图片 + 下方白底标题）
   ============================================================ */
.sdf-hero { background: var(--sdf-color-bg); }
.sdf-hero__group { display: grid; grid-template-columns: repeat(3, 1fr); }
.sdf-hero__banner { display: grid; grid-template-columns: 1fr; background: #fff; }
.sdf-hero__media { aspect-ratio: 4 / 5; width: 100%; overflow: hidden; }
.sdf-hero__img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s ease; }
.sdf-hero__banner:hover .sdf-hero__img { transform: scale(1.02); }
.sdf-hero__content { padding: 32px 16px; background: #fff; }
.sdf-hero__title {
	font-size: 18px; font-weight: 500; text-transform: uppercase;
	color: var(--sdf-color-text); line-height: 1.3; margin: 0;
}
.sdf-hero__link { display: inline-flex; align-items: center; gap: 4px; color: #000; text-decoration: none; }
.sdf-hero__link:hover { text-decoration: underline; }
.sdf-hero__title-text { display: inline-block; }
.sdf-hero__arrow { display: inline-block; flex: none; }
.sdf-hero__subtitle {
	font-size: 13px; font-weight: 500; text-transform: uppercase;
	color: var(--sdf-color-text); margin: 8px 0 0; line-height: 1.4;
}

/* ============================================================
   7. in focus 双图 teaser（对标站 teaser-grid 样式）
   ============================================================ */
.sdf-infocus {
	display: grid; grid-template-columns: 1fr 1fr; gap: 8px;
}
.sdf-infocus__item { position: relative; overflow: hidden; }
.sdf-infocus__media { aspect-ratio: 1 / 1; overflow: hidden; }
.sdf-infocus__img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s ease; }
.sdf-infocus__item:hover .sdf-infocus__img { transform: scale(1.03); }
.sdf-infocus__content { padding: 16px; }
.sdf-infocus__tag {
	font-size: 11px; letter-spacing: 1px; text-transform: uppercase;
	margin-bottom: 6px; color: #000;
}
.sdf-infocus__title {
	font-size: 18px; font-weight: 400; line-height: 1.3; margin: 0;
}
.sdf-infocus__link {
	display: inline-flex; align-items: center; gap: 4px;
	color: #000; text-decoration: none;
}
.sdf-infocus__link:hover { text-decoration: underline; }
.sdf-infocus__arrow { display: inline-block; }

/* ============================================================
   8. Newsletter 订阅条
   ============================================================ */
.sdf-newsletter {
	border-top: 1px solid var(--sdf-color-line);
	padding: 64px var(--sdf-gutter);
	text-align: center;
}
.sdf-newsletter__title { font-size: 28px; font-weight: 500; margin-bottom: 12px; text-transform: uppercase; letter-spacing: 1px; }
.sdf-newsletter__text { max-width: 520px; margin: 0 auto 24px; font-size: 14px; line-height: 22px; }
.sdf-newsletter__form { display: flex; max-width: 420px; margin: 0 auto; border-bottom: 1px solid var(--sdf-color-line); }
.sdf-newsletter__input { flex: 1; border: none; background: transparent; padding: 12px 4px; outline: none; font-size: 14px; }
.sdf-newsletter__submit { background: none; border: none; font-size: 13px; text-transform: uppercase; letter-spacing: 0.5px; padding: 0 8px; }

/* ============================================================
   9. Footer
   ============================================================ */
.sdf-footer { border-top: 1px solid var(--sdf-color-line); background: var(--sdf-color-bg); }
.sdf-footer__cols {
	display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
	gap: 40px; padding: 48px var(--sdf-gutter) 40px;
	max-width: var(--sdf-container); margin: 0 auto;
}
.sdf-footer__col-title {
	font-size: 14px; font-weight: 500; text-transform: uppercase; letter-spacing: 1px;
	margin-bottom: 16px;
}
.sdf-footer__text { font-size: 14px; line-height: 22px; margin-bottom: 16px; }
.sdf-footer__form { display: flex; border-bottom: 1px solid var(--sdf-color-line); max-width: 320px; }
.sdf-footer__input { flex: 1; border: none; background: transparent; padding: 10px 4px; outline: none; font-size: 13px; }
.sdf-footer__submit {
	background: var(--sdf-color-accent); color: var(--sdf-color-text);
	border: 1px solid var(--sdf-color-text);
	font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px;
	padding: 12px 16px;
}
.sdf-footer__submit:hover { background: var(--sdf-color-text); color: var(--sdf-color-accent); }
.sdf-footer__list { display: grid; gap: 8px; }
.sdf-footer__link { font-size: 14px; text-decoration: none; color: var(--sdf-color-text); display: inline-block; }
.sdf-footer__link:hover { text-decoration: underline; }

.sdf-footer__bottom {
	border-top: 1px solid var(--sdf-color-line);
	padding: 16px var(--sdf-gutter);
	max-width: var(--sdf-container); margin: 0 auto;
	display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
	font-size: 12px; letter-spacing: 0.5px; text-transform: uppercase;
}
.sdf-footer__legal { display: flex; gap: 20px; }
.sdf-footer__legal a:hover { text-decoration: underline; }

/* ============================================================
   10. 响应式（断点 1024px，对齐标站）
   ============================================================ */
@media (max-width: 1024px) {
	:root { --sdf-gutter: 16px; }

	.sdf-header__inner {
		grid-template-areas: "logo actions menu";
		grid-template-columns: 1fr auto auto;
		gap: 10px;
	}
	.sdf-nav { display: none; }
	.sdf-nav__trigger { display: inline-flex; }
	.sdf-header__actions { gap: 6px; }

	.sdf-footer__cols { grid-template-columns: 1fr 1fr; gap: 32px; }
	.sdf-infocus { grid-template-columns: 1fr; }
	/* 移动端 banner：每组 1 列堆叠，标题区缩小 padding */
	.sdf-hero__group { grid-template-columns: 1fr; }
	.sdf-hero__media { aspect-ratio: 4 / 5; }
	.sdf-hero__content { padding: 20px 12px; }
	.sdf-hero__title { font-size: 16px; }
}

@media (max-width: 640px) {
	.sdf-footer__cols { grid-template-columns: 1fr; }
	.sdf-section { padding: 32px 0; }
	.sdf-newsletter { padding: 40px 16px; }
	.sdf-newsletter__title { font-size: 22px; }
}

@media (min-width: 1025px) {
	.sdf-mobile-menu { display: none; }
}

/* ============================================================
   隐藏 Astra scroll-to-top：保留元素（避免其 JS getComputedStyle 报错），
   仅用 CSS 隐藏视觉，防止页脚残留箭头图标。
   ============================================================ */
#ast-scroll-top { display: none !important; }