/* ================================================================
   SinWay 样板站 —— 版式变体样式
   仅覆盖排版，不改原站设计语言（配色/字体全部沿用 site.css 变量）
   ================================================================ */

/* ---------- 顶部样式切换条 ---------- */
.v-switch {
    position: sticky;
    top: 82px;
    z-index: 70;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    background: rgba(250, 248, 243, .94);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--line);
}
.v-switch span.v-switch-label {
    padding: 12px 18px 12px 0;
    font-size: .62rem;
    letter-spacing: .18em;
    text-transform: uppercase;
    color: var(--stone);
    border-right: 1px solid var(--line);
    margin-right: 0;
}
.v-switch span.v-switch-label::after { content: ""; }
.v-switch a {
    padding: 12px 26px;
    font-size: .66rem;
    letter-spacing: .16em;
    text-transform: uppercase;
    color: var(--stone);
    border-right: 1px solid var(--line);
    transition: color .2s ease, background .2s ease;
}
.v-switch a:first-of-type { border-left: 1px solid var(--line); }
.v-switch a:hover { color: var(--ink); }
.v-switch a.is-active { background: var(--ink); color: #fff; }

/* ================================================================
   案例 A（原站双列 contain）—— 无需覆盖，只做小修
   ================================================================ */
/* 保持原样 */

/* ================================================================
   案例 B —— 三列满铺，信息在下方，悬停轻推
   ================================================================ */
.project-list-grid.v-project-b {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 30px 16px;
}
.v-project-b .project-card-image {
    aspect-ratio: 4 / 5;
    background: var(--ink-soft);
    overflow: hidden;
}
.v-project-b .project-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transition: transform 900ms cubic-bezier(.2, .7, .2, 1);
}
.v-project-b .project-card:hover .project-card-image img { transform: scale(1.05); }
.v-project-b .project-card>div { padding-top: 18px; }
.v-project-b .project-card>div span {
    font-size: .62rem;
    letter-spacing: .16em;
    text-transform: uppercase;
    color: var(--champagne);
}
.v-project-b .project-card>div h2 {
    font-family: var(--serif);
    font-size: 1.16rem;
    line-height: 1.35;
    font-weight: 400;
    margin: 8px 0 10px;
}

/* ================================================================
   案例 C —— 杂志式：12 栅格 5/4/3 阶梯节奏，每行三张不等宽
   ================================================================ */
.project-list-grid.v-project-c {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 34px 20px;
    align-items: start;
}
.v-project-c .project-card:nth-child(3n+1) { grid-column: span 5; }
.v-project-c .project-card:nth-child(3n+2) { grid-column: span 4; }
.v-project-c .project-card:nth-child(3n+3) { grid-column: span 3; }
.v-project-c .project-card-image {
    aspect-ratio: 3 / 4;
    background: var(--sand);
    overflow: hidden;
}
.v-project-c .project-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 800ms cubic-bezier(.2, .7, .2, 1);
}
.v-project-c .project-card:hover .project-card-image img { transform: scale(1.04); }
.v-project-c .project-card>div { padding-top: 14px; min-height: 104px; }
.v-project-c .project-card>div h2 {
    font-family: var(--serif);
    font-size: .92rem;
    line-height: 1.42;
    font-weight: 400;
    margin: 6px 0 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.v-project-c .project-card>div span {
    font-size: .6rem;
    letter-spacing: .16em;
    text-transform: uppercase;
    color: var(--champagne);
}

/* ================================================================
   产品 B —— 大列表：左图右文，横向呼吸感
   ================================================================ */
.product-directory-grid.v-product-b {
    grid-template-columns: 1fr;
    gap: 0;
}
.v-product-b article {
    display: grid;
    grid-template-columns: minmax(0, 46%) minmax(0, 1fr);
    gap: 64px;
    align-items: center;
    padding: 38px 0;
    border-top: 1px solid var(--line);
}
.v-product-b article:last-child { border-bottom: 1px solid var(--line); }
.v-product-b .product-directory-image {
    aspect-ratio: 4 / 3;
    background: var(--pearl);
}
.v-product-b .product-directory-image img { object-fit: contain; }
.v-product-b article>div:last-child { padding: 0; }
.v-product-b article>div:last-child span {
    font-family: var(--serif);
    font-size: .9rem;
    color: var(--champagne);
    letter-spacing: .1em;
}
.v-product-b article>div:last-child h2 {
    font-family: var(--serif);
    font-size: clamp(1.4rem, 2.2vw, 2.1rem);
    line-height: 1.2;
    font-weight: 400;
    margin: 10px 0 16px;
    max-width: 24ch;
}
.v-product-b article>div:last-child p {
    color: var(--stone);
    font-size: .9rem;
    line-height: 1.7;
    max-width: 46ch;
    margin-bottom: 22px;
}

/* ================================================================
   产品 C —— 深色画廊：三列大图，暗场衬托石材
   ================================================================ */
.v-dark-section {
    background: var(--ink);
    color: var(--paper);
    padding: 96px 0 110px;
}
.v-dark-section .micro-label { color: var(--champagne); }
.v-dark-section h2 {
    font-family: var(--serif);
    font-weight: 400;
    font-size: clamp(1.7rem, 3vw, 2.6rem);
    line-height: 1.18;
    max-width: 22ch;
    margin: 14px 0 12px;
}
.v-dark-section p.v-dark-intro {
    color: rgba(250, 248, 243, .62);
    max-width: 52ch;
    line-height: 1.7;
    font-size: .92rem;
}
.v-dark-head { margin-bottom: 58px; }
.v-product-c {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 46px 20px;
}
.v-product-c article>div:last-child { padding-top: 16px; }
.v-product-c article>div:last-child span { color: var(--champagne); }
.v-product-c article>div:last-child h2 {
    font-family: var(--serif);
    font-weight: 400;
    font-size: 1.08rem;
    line-height: 1.4;
    color: var(--paper);
    margin: 8px 0 10px;
}
.v-product-c article>div:last-child p {
    color: rgba(250, 248, 243, .52);
    font-size: .82rem;
    line-height: 1.65;
    margin-bottom: 14px;
}
.v-product-c article>div:last-child a { color: var(--champagne); }
.v-product-c .product-directory-image {
    aspect-ratio: 4 / 5;
    background: #26251f;
    overflow: hidden;
}
.v-product-c .product-directory-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: transform 900ms cubic-bezier(.2, .7, .2, 1);
}
.v-product-c article:hover .product-directory-image img { transform: scale(1.05); }

/* ================================================================
   产品详情样板
   ================================================================ */
.v-pdp { padding: 70px 0 110px; }
.v-pdp-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    gap: 70px;
    align-items: start;
}
.v-pdp-media {
    position: relative;
    aspect-ratio: 4 / 5;
    background: var(--pearl);
    overflow: hidden;
}
.v-pdp-media img { width: 100%; height: 100%; object-fit: contain; }
.v-pdp-thumbs { display: flex; gap: 10px; margin-top: 12px; }
.v-pdp-thumbs div {
    flex: 1;
    aspect-ratio: 1/1;
    background: var(--pearl);
    overflow: hidden;
}
.v-pdp-thumbs img { width: 100%; height: 100%; object-fit: cover; }
.v-pdp-info h1 {
    font-family: var(--serif);
    font-weight: 400;
    font-size: clamp(1.8rem, 3vw, 2.7rem);
    line-height: 1.12;
    margin: 14px 0 20px;
}
.v-pdp-info>p.v-pdp-lead {
    color: var(--stone);
    line-height: 1.75;
    font-size: .95rem;
    max-width: 46ch;
    margin-bottom: 34px;
}
.v-pdp .spec-grid { margin: 0 0 34px; }
.v-pdp-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.v-pdp-actions .btn-solid,
.v-pdp-actions .btn-line {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 26px;
    font-size: .68rem;
    letter-spacing: .14em;
    text-transform: uppercase;
    border: 1px solid var(--ink);
}
.v-pdp-actions .btn-solid { background: var(--ink); color: #fff; }
.v-pdp-actions .btn-line { color: var(--ink); }

/* ================================================================
   联系页
   ================================================================ */
.v-contact { padding: 80px 0 120px; }
.v-contact-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 80px;
    align-items: start;
}
.v-contact h1 {
    font-family: var(--serif);
    font-weight: 400;
    font-size: clamp(2rem, 3.6vw, 3.2rem);
    line-height: 1.1;
    margin: 16px 0 24px;
}
.v-contact-list { margin-top: 44px; border-top: 1px solid var(--line); }
.v-contact-list div {
    display: grid;
    grid-template-columns: 130px 1fr;
    gap: 20px;
    padding: 18px 0;
    border-bottom: 1px solid var(--line);
    font-size: .9rem;
}
.v-contact-list dt {
    font-size: .64rem;
    letter-spacing: .16em;
    text-transform: uppercase;
    color: var(--stone);
    padding-top: 4px;
}
.v-contact-form { display: grid; gap: 18px; }
.v-contact-form label {
    display: grid;
    gap: 8px;
    font-size: .64rem;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--stone);
}
.v-contact-form input,
.v-contact-form textarea {
    border: 0;
    border-bottom: 1px solid var(--line);
    background: transparent;
    padding: 10px 0;
    font-size: .95rem;
    color: var(--ink);
    font-family: inherit;
}
.v-contact-form textarea { min-height: 110px; resize: vertical; }
.v-contact-form button {
    justify-self: start;
    margin-top: 10px;
    border: 1px solid var(--ink);
    background: var(--ink);
    color: #fff;
    padding: 15px 30px;
    font-size: .68rem;
    letter-spacing: .14em;
    text-transform: uppercase;
    cursor: pointer;
}
.v-form-note { font-size: .72rem; color: var(--stone); line-height: 1.6; }

/* ================================================================
   响应式
   ================================================================ */
@media (max-width: 1100px) {
    .project-list-grid.v-project-b { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .v-product-c { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .v-pdp-grid { grid-template-columns: 1fr; gap: 40px; }
    .v-contact-grid { grid-template-columns: 1fr; gap: 50px; }
}
@media (max-width: 900px) {
    .v-switch { top: 72px; }
    /* 原站在窄屏隐藏品牌文字；徽标只有 SW，客户认不出，这里强制显示 */
    .brand > span:last-child { display: flex !important; }
    .brand .brand-mark { width: 34px; height: 34px; }
    .brand .brand-mark img { width: 32px; height: 32px; }
    .brand strong { font-size: .82rem; letter-spacing: .14em; }
    .brand small { font-size: .44rem; letter-spacing: .28em; margin-top: 4px; }
}

@media (max-width: 820px) {
    .v-switch { justify-content: flex-start; overflow-x: auto; }
    .v-switch span.v-switch-label { display: none; }
    .v-switch a { padding: 11px 18px; white-space: nowrap; }
    .project-list-grid.v-project-b { grid-template-columns: 1fr; }
    .project-list-grid.v-project-c { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .v-project-c .project-card:nth-child(3n+1),
    .v-project-c .project-card:nth-child(3n+2),
    .v-project-c .project-card:nth-child(3n+3) { grid-column: span 1; }
    .v-product-b article { grid-template-columns: 1fr; gap: 20px; padding: 26px 0; }
    .v-product-b .product-directory-image { aspect-ratio: 4 / 3; }
    .v-product-c { grid-template-columns: 1fr; gap: 34px; }
    .v-dark-section { padding: 60px 0 70px; }
    .v-contact-list div { grid-template-columns: 1fr; gap: 6px; }
}