/* ==========================================================================
   泓楠拍卖 · 前台样式
   ========================================================================== */

:root {
    --ink: #1b1813;
    --ink-2: #3a352d;
    --ink-3: #6b6357;
    --paper: #f8f4ec;
    --paper-2: #efe7d8;
    --paper-3: #e6dbc7;
    --gold: #9d7b45;
    --gold-2: #c4a26a;
    --line: rgba(27, 24, 19, .12);
    --line-strong: rgba(27, 24, 19, .24);
    --serif: "Songti SC", "Noto Serif SC", "Source Han Serif SC", "STSong", "SimSun", serif;
    --sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    --container: 1240px;
    --ease: cubic-bezier(.22, .61, .36, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--paper);
    color: var(--ink);
    font-family: var(--sans);
    font-size: 15px;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
}

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

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

button,
input,
select,
textarea {
    font: inherit;
    color: inherit;
}

h1,
h2,
h3,
h4 {
    font-family: var(--serif);
    font-weight: 600;
    line-height: 1.28;
    margin: 0;
    letter-spacing: .02em;
}

p {
    margin: 0;
}

ul,
ol,
dl,
dd {
    margin: 0;
    padding: 0;
}

li {
    list-style: none;
}

.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 32px;
}

.kicker {
    font-family: var(--sans);
    font-size: 11px;
    letter-spacing: .28em;
    text-transform: uppercase;
    color: var(--gold);
    margin-bottom: 14px;
}

.empty {
    padding: 64px 0;
    text-align: center;
    color: var(--ink-3);
    font-family: var(--serif);
    font-size: 16px;
}

/* ---------- 顶部信息栏 ---------- */
.topbar {
    background: var(--ink);
    color: rgba(248, 244, 236, .72);
    font-size: 12px;
    letter-spacing: .04em;
}

.topbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 38px;
    gap: 24px;
}

.topbar-note {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 22px;
    flex-shrink: 0;
}

.topbar-mail {
    color: var(--gold-2);
    transition: color .25s;
}

.topbar-mail:hover {
    color: #fff;
}

.lang-switch {
    display: flex;
    align-items: center;
    gap: 4px;
}

.lang-switch a {
    padding: 2px 8px;
    border: 1px solid rgba(248, 244, 236, .22);
    font-size: 11px;
    line-height: 1.5;
    transition: all .25s;
}

.lang-switch a:hover,
.lang-switch a.is-active {
    background: var(--gold);
    border-color: var(--gold);
    color: #fff;
}

/* ---------- 页头 ---------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 90;
    background: rgba(248, 244, 236, .94);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
    transition: box-shadow .3s;
}

.site-header.is-scrolled {
    box-shadow: 0 10px 30px rgba(27, 24, 19, .08);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 84px;
    gap: 32px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    flex-shrink: 0;
}

.brand-logo {
    display: block;
    width: auto;
    height: 46px;
}

.brand-seal {
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    background: var(--ink);
    color: var(--paper);
    font-family: var(--serif);
    font-size: 22px;
    line-height: 1;
    border-radius: 2px;
    box-shadow: inset 0 0 0 1px rgba(196, 162, 106, .55);
}

.brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.35;
}

.brand-text strong {
    font-family: var(--serif);
    font-size: 19px;
    letter-spacing: .08em;
}

.brand-text em {
    font-style: normal;
    font-size: 9px;
    letter-spacing: .22em;
    color: var(--ink-3);
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 34px;
}

.main-nav a {
    position: relative;
    font-size: 14px;
    letter-spacing: .06em;
    padding: 6px 0;
    color: var(--ink-2);
    transition: color .25s;
}

.main-nav a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 1px;
    background: var(--gold);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .3s var(--ease);
}

.main-nav a:hover,
.main-nav a.is-active {
    color: var(--ink);
}

.main-nav a:hover::after,
.main-nav a.is-active::after {
    transform: scaleX(1);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    width: 44px;
    height: 44px;
    background: none;
    border: 1px solid var(--line-strong);
    cursor: pointer;
    padding: 0 12px;
}

.nav-toggle span {
    display: block;
    height: 1px;
    background: var(--ink);
    transition: transform .3s;
}

/* ---------- 按钮 ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 34px;
    font-size: 13px;
    letter-spacing: .12em;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all .3s var(--ease);
}

.btn--primary {
    background: var(--ink);
    color: var(--paper);
    border-color: var(--ink);
}

.btn--primary:hover {
    background: var(--gold);
    border-color: var(--gold);
    color: #fff;
}

.btn--ghost {
    border-color: rgba(248, 244, 236, .5);
    color: var(--paper);
}

.btn--ghost:hover {
    background: rgba(248, 244, 236, .12);
    border-color: var(--paper);
}

.btn--light {
    background: var(--paper);
    color: var(--ink);
    border-color: var(--paper);
}

.btn--light:hover {
    background: var(--gold);
    border-color: var(--gold);
    color: #fff;
}

.link-arrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    letter-spacing: .06em;
    color: var(--ink-2);
}

.link-arrow i {
    font-style: normal;
    transition: transform .3s var(--ease);
}

.link-arrow:hover {
    color: var(--gold);
}

.link-arrow:hover i {
    transform: translateX(5px);
}

/* ---------- 首页 Hero ---------- */
.hero {
    position: relative;
    min-height: 88vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: var(--ink);
}

.hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    transform: scale(1.04);
    animation: heroZoom 18s ease-out forwards;
}

@keyframes heroZoom {
    to {
        transform: scale(1);
    }
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(15, 13, 10, .82) 0%, rgba(15, 13, 10, .5) 46%, rgba(15, 13, 10, .18) 100%);
}

.hero-inner {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 48px;
    padding-top: 120px;
    padding-bottom: 96px;
    min-height: 88vh;
    box-sizing: border-box;
}

.hero-copy {
    max-width: 640px;
    color: var(--paper);
}

.hero-title {
    font-size: clamp(42px, 6vw, 76px);
    font-weight: 500;
    letter-spacing: .06em;
    color: var(--paper);
    margin-bottom: 26px;
}

.hero-title span {
    display: block;
}

.hero-title em {
    display: block;
    font-style: normal;
    font-size: .42em;
    letter-spacing: .3em;
    color: var(--gold-2);
    margin-top: 18px;
}

.hero-desc {
    max-width: 520px;
    color: rgba(248, 244, 236, .74);
    font-size: 15px;
    line-height: 2;
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-top: 40px;
    flex-wrap: wrap;
}

.hero-auction {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 6px;
    width: 300px;
    padding: 28px 30px;
    background: rgba(248, 244, 236, .08);
    border: 1px solid rgba(248, 244, 236, .22);
    backdrop-filter: blur(8px);
    color: var(--paper);
    transition: background .3s, border-color .3s;
}

.hero-auction:hover {
    background: rgba(248, 244, 236, .16);
    border-color: rgba(196, 162, 106, .8);
}

.hero-auction-label {
    font-size: 10px;
    letter-spacing: .24em;
    text-transform: uppercase;
    color: var(--gold-2);
}

.hero-auction strong {
    font-family: var(--serif);
    font-size: 19px;
    font-weight: 500;
    line-height: 1.5;
}

.hero-auction-meta {
    font-size: 12px;
    color: rgba(248, 244, 236, .66);
    letter-spacing: .04em;
}

.hero-auction-arrow {
    position: absolute;
    right: 26px;
    bottom: 22px;
    font-size: 18px;
    transition: transform .3s var(--ease);
}

.hero-auction:hover .hero-auction-arrow {
    transform: translateX(6px);
}

/* ---------- 区块 ---------- */
.section {
    padding: 100px 0;
}

.section--featured {
    background: var(--paper);
}

.section--auctions {
    background: var(--paper-2);
}

.section--journal {
    background: var(--paper);
}

.section--about {
    background: var(--paper);
}

.section-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 48px;
    margin-bottom: 56px;
}

.section-head h2 {
    font-size: clamp(30px, 3.4vw, 44px);
    font-weight: 500;
}

.section-head--tight {
    margin-bottom: 40px;
}

.section-desc {
    max-width: 420px;
    color: var(--ink-3);
    font-size: 14px;
    line-height: 1.95;
    text-align: right;
}

.section-more {
    margin-top: 48px;
    text-align: right;
}

/* ---------- 拍品卡片 ---------- */
.lot-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 32px 28px;
}

.lot-card {
    display: flex;
    flex-direction: column;
}

.lot-media {
    position: relative;
    display: block;
    aspect-ratio: 4 / 5;
    overflow: hidden;
    background: var(--paper-2);
}

.lot-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .9s var(--ease);
}

.lot-card:hover .lot-media img {
    transform: scale(1.06);
}

.lot-placeholder {
    display: grid;
    place-items: center;
    width: 100%;
    height: 100%;
    font-family: var(--serif);
    font-size: 28px;
    color: var(--gold);
    letter-spacing: .2em;
}

.lot-no,
.lot-cat {
    position: absolute;
    top: 14px;
    left: 14px;
    padding: 4px 10px;
    background: rgba(27, 24, 19, .82);
    color: var(--paper);
    font-size: 10px;
    letter-spacing: .16em;
}

.lot-cat {
    background: rgba(157, 123, 69, .92);
}

.lot-body {
    padding: 18px 2px 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.lot-estimate {
    font-size: 11px;
    letter-spacing: .12em;
    color: var(--gold);
}

.lot-body h3 {
    font-size: 16px;
    font-weight: 500;
    line-height: 1.6;
    letter-spacing: .01em;
}

.lot-body h3 a {
    transition: color .25s;
}

.lot-body h3 a:hover {
    color: var(--gold);
}

.lot-link {
    font-size: 11px;
    letter-spacing: .1em;
    color: var(--ink-3);
    opacity: 0;
    transform: translateY(4px);
    transition: all .35s var(--ease);
}

.lot-link i {
    font-style: normal;
}

.lot-card:hover .lot-link {
    opacity: 1;
    transform: translateY(0);
}

/* ---------- 拍卖列表（首页） ---------- */
.auction-rows {
    border-top: 1px solid var(--line-strong);
}

.auction-row {
    display: grid;
    grid-template-columns: 90px 1fr auto 32px;
    align-items: center;
    gap: 32px;
    padding: 26px 4px;
    border-bottom: 1px solid var(--line);
    transition: background .3s, padding .3s var(--ease);
}

.auction-row:hover {
    background: rgba(255, 255, 255, .45);
    padding-left: 16px;
    padding-right: 16px;
}

.auction-row-date {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.auction-row-date em {
    font-style: normal;
    font-family: var(--serif);
    font-size: 32px;
    color: var(--ink);
}

.auction-row-date span {
    font-size: 11px;
    letter-spacing: .1em;
    color: var(--ink-3);
}

.auction-row-main {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.auction-row-main strong {
    font-family: var(--serif);
    font-size: 19px;
    font-weight: 500;
}

.auction-row-main span {
    font-size: 12px;
    color: var(--ink-3);
    letter-spacing: .04em;
}

.auction-row-meta {
    display: flex;
    align-items: center;
    gap: 18px;
    font-size: 12px;
    color: var(--ink-3);
}

.auction-row-arrow {
    color: var(--gold);
    transition: transform .3s var(--ease);
}

.auction-row:hover .auction-row-arrow {
    transform: translateX(6px);
}

.status {
    display: inline-block;
    padding: 4px 12px;
    font-size: 10px;
    letter-spacing: .14em;
    font-family: var(--sans);
    white-space: nowrap;
}

.status--upcoming {
    background: rgba(157, 123, 69, .14);
    color: var(--gold);
    border: 1px solid rgba(157, 123, 69, .4);
}

.status--live {
    background: #a33b2c;
    color: #fff;
}

.status--ended {
    background: rgba(27, 24, 19, .08);
    color: var(--ink-3);
    border: 1px solid var(--line-strong);
}

/* ---------- 关于 ---------- */
.about-split {
    display: grid;
    grid-template-columns: 1.05fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-media {
    position: relative;
}

.about-media img {
    width: 100%;
    aspect-ratio: 4 / 5;
    object-fit: cover;
}

.about-stamp {
    position: absolute;
    left: -22px;
    bottom: 34px;
    padding: 10px 16px;
    background: var(--paper);
    border: 1px solid var(--gold);
    color: var(--gold);
    font-family: var(--serif);
    font-size: 14px;
    letter-spacing: .2em;
    writing-mode: vertical-rl;
}

.about-copy h2 {
    font-size: clamp(28px, 3vw, 40px);
    font-weight: 500;
    margin-bottom: 26px;
}

.about-copy > p {
    color: var(--ink-2);
    font-size: 14px;
    line-height: 2;
    margin-bottom: 16px;
}

.about-copy .link-arrow {
    margin-top: 26px;
}

.stat-row {
    display: flex;
    gap: 44px;
    margin: 34px 0 6px;
    padding-top: 30px;
    border-top: 1px solid var(--line-strong);
}

.stat {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.stat strong {
    font-family: var(--serif);
    font-size: 36px;
    font-weight: 500;
    color: var(--gold);
    line-height: 1;
}

.stat span {
    font-size: 11px;
    letter-spacing: .12em;
    color: var(--ink-3);
}

/* ---------- 资讯 ---------- */
.journal-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 32px;
}

.journal-card {
    display: flex;
    flex-direction: column;
    background: #fff;
    border: 1px solid var(--line);
    transition: transform .4s var(--ease), box-shadow .4s;
}

.journal-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 24px 50px rgba(27, 24, 19, .1);
}

.journal-media {
    display: block;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--paper-2);
}

.journal-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .9s var(--ease);
}

.journal-card:hover .journal-media img {
    transform: scale(1.05);
}

.journal-placeholder {
    display: grid;
    place-items: center;
    width: 100%;
    height: 100%;
    font-family: var(--serif);
    color: var(--gold);
    letter-spacing: .2em;
    font-size: 20px;
}

.journal-body {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 26px 26px 30px;
}

.journal-body time {
    font-size: 11px;
    letter-spacing: .12em;
    color: var(--gold);
}

.journal-body strong {
    font-family: var(--serif);
    font-size: 18px;
    font-weight: 500;
    line-height: 1.6;
}

.journal-excerpt {
    font-size: 13px;
    color: var(--ink-3);
    line-height: 1.9;
}

.journal-body .link-arrow {
    margin-top: 4px;
    font-size: 12px;
}

/* ---------- CTA ---------- */
.cta-band {
    background: var(--ink);
    color: var(--paper);
    padding: 80px 0;
}

.cta-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 48px;
}

.cta-inner h2 {
    font-size: clamp(26px, 3vw, 38px);
    font-weight: 500;
    margin-bottom: 12px;
}

.cta-inner p {
    max-width: 620px;
    color: rgba(248, 244, 236, .66);
    font-size: 14px;
    line-height: 1.95;
}

/* ---------- 内页头 ---------- */
.page-hero {
    padding: 96px 0 64px;
    background: var(--paper-2);
    border-bottom: 1px solid var(--line);
    text-align: center;
}

.page-hero h1 {
    font-size: clamp(34px, 4.2vw, 54px);
    font-weight: 500;
    margin-bottom: 16px;
}

.page-hero > .container > p:last-child {
    color: var(--ink-3);
    font-size: 14px;
    letter-spacing: .04em;
}

.page-hero--about {
    background: linear-gradient(180deg, var(--paper-2), var(--paper));
}

/* ---------- 面包屑 ---------- */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 12px;
    letter-spacing: .06em;
    color: rgba(248, 244, 236, .7);
    margin-bottom: 26px;
}

.breadcrumb a:hover {
    color: var(--gold-2);
}

.breadcrumb--light {
    color: var(--ink-3);
    margin-bottom: 40px;
}

.breadcrumb--light a:hover {
    color: var(--gold);
}

.breadcrumb--center {
    justify-content: center;
    color: var(--ink-3);
}

/* ---------- 拍卖筛选 ---------- */
.filter-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--line-strong);
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.filter-tabs {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.filter-tab {
    padding: 8px 20px;
    font-size: 13px;
    letter-spacing: .06em;
    border: 1px solid var(--line-strong);
    color: var(--ink-2);
    transition: all .25s;
}

.filter-tab:hover {
    border-color: var(--gold);
    color: var(--gold);
}

.filter-tab.is-active {
    background: var(--ink);
    border-color: var(--ink);
    color: var(--paper);
}

.filter-year select,
.sort-select {
    padding: 9px 34px 9px 14px;
    font-size: 13px;
    background: transparent;
    border: 1px solid var(--line-strong);
    border-radius: 0;
    appearance: none;
    background-image: linear-gradient(45deg, transparent 50%, var(--ink-3) 50%), linear-gradient(135deg, var(--ink-3) 50%, transparent 50%);
    background-position: calc(100% - 18px) 50%, calc(100% - 13px) 50%;
    background-size: 5px 5px, 5px 5px;
    background-repeat: no-repeat;
    cursor: pointer;
}

/* ---------- 拍卖卡片 ---------- */
.auction-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 40px;
}

.auction-card {
    display: flex;
    flex-direction: column;
    background: #fff;
    border: 1px solid var(--line);
}

.auction-card-media {
    position: relative;
    display: block;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: var(--paper-2);
}

.auction-card-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .9s var(--ease);
}

.auction-card:hover .auction-card-media img {
    transform: scale(1.05);
}

.auction-card-placeholder {
    display: grid;
    place-items: center;
    width: 100%;
    height: 100%;
    font-family: var(--serif);
    color: var(--gold);
    letter-spacing: .2em;
}

.auction-card-media .status {
    position: absolute;
    top: 18px;
    left: 18px;
}

.auction-card-body {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 26px 28px 28px;
}

.auction-card-date {
    font-size: 11px;
    letter-spacing: .14em;
    color: var(--gold);
}

.auction-card-body strong {
    font-family: var(--serif);
    font-size: 21px;
    font-weight: 500;
    line-height: 1.55;
}

.auction-card-sub {
    font-size: 13px;
    color: var(--ink-3);
}

.auction-card-foot {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 16px;
    margin-top: 14px;
    padding-top: 16px;
    border-top: 1px solid var(--line);
    font-size: 12px;
    color: var(--ink-3);
}

.auction-card-foot-info {
    display: flex;
    flex-direction: column;
    gap: 6px;
    line-height: 1.6;
}

.auction-card-address {
    color: var(--ink-3);
}

/* ---------- 分页 ---------- */
.pager {
    margin-top: 56px;
}

.pager ul,
.pager .pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
    padding: 0;
    list-style: none;
}

.pager li a,
.pager li span,
.pager .pagination a,
.pager .pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 12px;
    border: 1px solid var(--line-strong);
    font-size: 13px;
    color: var(--ink-2);
    transition: all .25s;
}

.pager li a:hover,
.pager .pagination a:hover {
    border-color: var(--gold);
    color: var(--gold);
}

.pager li.active span,
.pager li.active a,
.pager .pagination .active span {
    background: var(--ink);
    border-color: var(--ink);
    color: var(--paper);
}

/* ---------- 拍卖详情 ---------- */
.auction-hero {
    position: relative;
    min-height: 56vh;
    display: flex;
    align-items: flex-end;
    background: var(--ink);
    color: var(--paper);
    overflow: hidden;
}

.auction-hero-bg {
    position: absolute;
    inset: 0;
    background-image: linear-gradient(90deg, rgba(15, 13, 10, .9), rgba(15, 13, 10, .45)), var(--cover, none);
    background-size: cover;
    background-position: center;
}

.auction-hero-inner {
    position: relative;
    z-index: 2;
    padding-top: 120px;
    padding-bottom: 64px;
}

.auction-hero h1 {
    font-size: clamp(30px, 4.4vw, 54px);
    font-weight: 500;
    max-width: 900px;
    margin: 14px 0 10px;
}

.auction-hero-sub {
    color: rgba(248, 244, 236, .7);
    font-size: 14px;
    letter-spacing: .1em;
}

.auction-meta {
    display: flex;
    gap: 64px;
    margin-top: 38px;
    padding-top: 26px;
    border-top: 1px solid rgba(248, 244, 236, .18);
}

.auction-meta dt {
    font-size: 10px;
    letter-spacing: .18em;
    text-transform: uppercase;
    color: var(--gold-2);
    margin-bottom: 6px;
}

.auction-meta dd {
    font-family: var(--serif);
    font-size: 16px;
    letter-spacing: .04em;
}

.auction-detail {
    max-width: 1100px;
}

.auction-intro {
    max-width: 780px;
    margin-bottom: 70px;
}

.auction-intro h2 {
    font-size: clamp(24px, 2.6vw, 34px);
    font-weight: 500;
    margin-bottom: 20px;
}

.auction-intro p:last-child {
    color: var(--ink-2);
    font-size: 14px;
    line-height: 2;
}

/* ---------- 拍品列表 ---------- */
.product-toolbar {
    display: flex;
    align-items: center;
    gap: 24px;
    flex-wrap: wrap;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--line-strong);
    margin-bottom: 22px;
}

.search-box {
    display: flex;
    align-items: center;
    border: 1px solid var(--line-strong);
    width: 260px;
}

.search-box input {
    flex: 1;
    min-width: 0;
    padding: 10px 14px;
    border: 0;
    background: transparent;
    font-size: 13px;
    outline: none;
}

.search-box button {
    width: 42px;
    height: 40px;
    border: 0;
    background: transparent;
    color: var(--gold);
    cursor: pointer;
    font-size: 16px;
}

.cat-chips {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    flex: 1;
}

.chip {
    padding: 7px 18px;
    font-size: 12px;
    letter-spacing: .06em;
    border: 1px solid var(--line);
    color: var(--ink-2);
    transition: all .25s;
}

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

.chip.is-active {
    background: var(--ink);
    border-color: var(--ink);
    color: var(--paper);
}

.result-count {
    font-size: 12px;
    color: var(--ink-3);
    letter-spacing: .04em;
    margin-bottom: 34px;
}

/* ---------- 拍品详情 ---------- */
.section--detail {
    padding-top: 56px;
}

.product-detail {
    display: grid;
    grid-template-columns: 1.05fr 1fr;
    gap: 72px;
    align-items: start;
}

.product-gallery {
    position: sticky;
    top: 110px;
}

.product-image {
    background: var(--paper-2);
    aspect-ratio: 4 / 5;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-info {
    padding-top: 12px;
}

.product-cat {
    display: inline-block;
    font-size: 11px;
    letter-spacing: .16em;
    color: var(--gold);
    border-bottom: 1px solid var(--gold);
    padding-bottom: 3px;
    margin-bottom: 18px;
}

.product-info h1 {
    font-size: clamp(24px, 2.8vw, 36px);
    font-weight: 500;
    margin-bottom: 24px;
}

.product-estimate {
    display: flex;
    align-items: baseline;
    gap: 16px;
    padding: 18px 0;
    border-top: 1px solid var(--line-strong);
    border-bottom: 1px solid var(--line-strong);
    margin-bottom: 30px;
}

.product-estimate span {
    font-size: 11px;
    letter-spacing: .16em;
    color: var(--ink-3);
    text-transform: uppercase;
}

.product-estimate strong {
    font-family: var(--serif);
    font-size: 22px;
    font-weight: 500;
    color: var(--gold);
}

.product-desc h3,
.product-history h3 {
    font-size: 13px;
    letter-spacing: .16em;
    color: var(--ink-3);
    font-family: var(--sans);
    font-weight: 500;
    margin-bottom: 12px;
}

.product-desc p {
    font-size: 14px;
    line-height: 2;
    color: var(--ink-2);
    margin-bottom: 32px;
}

.product-info > .btn {
    margin-bottom: 40px;
}

.product-history ul {
    border-top: 1px solid var(--line);
}

.product-history li a {
    display: flex;
    align-items: center;
    gap: 18px;
    padding: 14px 0;
    border-bottom: 1px solid var(--line);
    font-size: 13px;
    transition: padding .3s var(--ease), color .25s;
}

.product-history li a:hover {
    padding-left: 8px;
    color: var(--gold);
}

.product-history li span {
    color: var(--ink-3);
    font-size: 11px;
    letter-spacing: .06em;
    white-space: nowrap;
}

.product-history li strong {
    flex: 1;
    font-weight: 400;
    font-family: var(--serif);
    font-size: 14px;
}

.product-history li em {
    font-style: normal;
    font-size: 10px;
    letter-spacing: .12em;
    color: var(--gold);
    white-space: nowrap;
}

.section--related {
    background: var(--paper-2);
}

/* ---------- 文章 ---------- */
.article-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 40px 32px;
}

.article-grid--three {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.article-card {
    display: flex;
    flex-direction: column;
    background: #fff;
    border: 1px solid var(--line);
    transition: transform .4s var(--ease), box-shadow .4s;
}

.article-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 24px 50px rgba(27, 24, 19, .1);
}

.article-card-media {
    display: block;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--paper-2);
}

.article-card-media--short {
    aspect-ratio: 16 / 9;
}

.article-card-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .9s var(--ease);
}

.article-card:hover .article-card-media img {
    transform: scale(1.05);
}

.article-card-body {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 28px 28px 32px;
}

.article-card-body time {
    font-size: 11px;
    letter-spacing: .12em;
    color: var(--gold);
}

.article-card-body strong {
    font-family: var(--serif);
    font-size: 19px;
    font-weight: 500;
    line-height: 1.6;
}

.article-card-summary {
    font-size: 13px;
    color: var(--ink-3);
    line-height: 1.9;
}

.article-card-body .link-arrow {
    font-size: 12px;
    margin-top: 4px;
}

.article-hero {
    padding: 96px 0 56px;
    background: var(--paper-2);
    border-bottom: 1px solid var(--line);
    text-align: center;
}

.article-hero h1 {
    max-width: 860px;
    margin: 0 auto 20px;
    font-size: clamp(28px, 3.8vw, 46px);
    font-weight: 500;
}

.article-hero time {
    font-size: 12px;
    letter-spacing: .1em;
    color: var(--ink-3);
}

.article-detail {
    max-width: 900px;
}

.article-cover {
    margin: 0 0 56px;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: var(--paper-2);
}

.article-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.article-content {
    font-size: 15px;
    line-height: 2.1;
    color: var(--ink-2);
}

.article-content h2,
.article-content h3 {
    margin: 40px 0 16px;
    color: var(--ink);
}

.article-content p {
    margin-bottom: 22px;
}

.article-content img {
    margin: 30px 0;
}

.article-content a {
    color: var(--gold);
    border-bottom: 1px solid rgba(157, 123, 69, .4);
}

.article-back {
    margin-top: 56px;
    padding-top: 26px;
    border-top: 1px solid var(--line);
}

/* ---------- 关于页 ---------- */
.section--values {
    background: var(--paper-2);
}

.value-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 32px;
}

.value-card {
    padding: 40px 34px;
    background: var(--paper);
    border: 1px solid var(--line);
}

.value-no {
    display: block;
    font-family: var(--serif);
    font-size: 13px;
    letter-spacing: .2em;
    color: var(--gold);
    margin-bottom: 22px;
}

.value-card h3 {
    font-size: 20px;
    font-weight: 500;
    margin-bottom: 12px;
}

.value-card p {
    font-size: 13px;
    line-height: 1.95;
    color: var(--ink-3);
}

.timeline {
    position: relative;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 32px;
    padding-top: 20px;
}

.timeline::before {
    content: "";
    position: absolute;
    top: 34px;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--line-strong);
}

.timeline li {
    position: relative;
    padding-top: 56px;
}

.timeline-year {
    position: absolute;
    top: 0;
    left: 0;
    font-family: var(--serif);
    font-size: 22px;
    color: var(--gold);
    background: var(--paper);
    padding-right: 18px;
}

.timeline-dot {
    position: absolute;
    top: 28px;
    left: 0;
    width: 11px;
    height: 11px;
    border-radius: 50%;
    background: var(--gold);
    box-shadow: 0 0 0 5px var(--paper);
}

.timeline li p {
    font-size: 13px;
    line-height: 1.95;
    color: var(--ink-3);
    max-width: 300px;
}

/* ---------- 联系我们 ---------- */
.contact-layout {
    display: grid;
    grid-template-columns: .75fr 1.25fr;
    gap: 72px;
    align-items: start;
}

.contact-info {
    padding: 40px 36px;
    background: var(--paper-2);
    border: 1px solid var(--line);
}

.contact-info h2 {
    font-size: 22px;
    font-weight: 500;
    margin-bottom: 18px;
}

.contact-email {
    display: inline-block;
    font-family: var(--serif);
    font-size: 20px;
    color: var(--gold);
    border-bottom: 1px solid rgba(157, 123, 69, .4);
    padding-bottom: 4px;
    word-break: break-all;
    transition: color .25s;
}

.contact-email:hover {
    color: var(--ink);
}

.contact-email-desc {
    margin-top: 16px;
    font-size: 13px;
    color: var(--ink-3);
    line-height: 1.9;
}

.contact-company {
    margin-top: 30px;
    padding-top: 24px;
    border-top: 1px solid var(--line-strong);
    font-family: var(--serif);
    font-size: 15px;
}

.contact-domain {
    font-size: 12px;
    letter-spacing: .08em;
    color: var(--ink-3);
    margin-top: 4px;
}

.contact-form-wrap h2 {
    font-size: 26px;
    font-weight: 500;
    margin-bottom: 10px;
}

.contact-form-desc {
    font-size: 13px;
    color: var(--ink-3);
    margin-bottom: 30px;
}

.alert {
    padding: 14px 18px;
    font-size: 13px;
    margin-bottom: 22px;
    border: 1px solid transparent;
}

.alert--success {
    background: rgba(78, 128, 88, .1);
    border-color: rgba(78, 128, 88, .35);
    color: #3d6b47;
}

.alert--error {
    background: rgba(163, 59, 44, .08);
    border-color: rgba(163, 59, 44, .32);
    color: #a33b2c;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 22px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
}

.contact-form label {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.contact-form label > span {
    font-size: 12px;
    letter-spacing: .06em;
    color: var(--ink-2);
}

.contact-form label > span i {
    font-style: normal;
    color: #a33b2c;
}

.contact-form input,
.contact-form textarea {
    padding: 13px 16px;
    background: #fff;
    border: 1px solid var(--line-strong);
    font-size: 14px;
    outline: none;
    border-radius: 0;
    transition: border-color .25s, box-shadow .25s;
    width: 100%;
}

.contact-form textarea {
    resize: vertical;
    min-height: 140px;
}

.contact-form input:focus,
.contact-form textarea:focus {
    border-color: var(--gold);
    box-shadow: 0 0 0 3px rgba(157, 123, 69, .12);
}

.contact-form-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
}

.contact-form-foot p {
    font-size: 12px;
    color: var(--ink-3);
}

/* ---------- 页脚 ---------- */
.site-footer {
    background: var(--ink);
    color: rgba(248, 244, 236, .7);
    padding-top: 76px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1.4fr;
    gap: 64px;
    padding-bottom: 60px;
}

.brand--footer .brand-seal {
    background: var(--gold);
    color: var(--ink);
    box-shadow: none;
}

.brand--footer .brand-text strong {
    color: var(--paper);
}

.brand--footer .brand-text em {
    color: rgba(248, 244, 236, .5);
}

.footer-brand p {
    margin-top: 20px;
    font-size: 13px;
    line-height: 1.95;
    max-width: 340px;
}

.footer-company {
    color: rgba(248, 244, 236, .5);
    font-size: 12px !important;
}

.footer-col h4 {
    font-size: 12px;
    letter-spacing: .2em;
    text-transform: uppercase;
    color: var(--gold-2);
    font-family: var(--sans);
    font-weight: 500;
    margin-bottom: 22px;
}

.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-col ul a {
    font-size: 13px;
    transition: color .25s, padding .25s;
}

.footer-col ul a:hover {
    color: var(--paper);
    padding-left: 5px;
}

.footer-email-label {
    font-size: 12px;
    color: rgba(248, 244, 236, .45);
    margin-bottom: 8px;
}

.footer-email {
    font-family: var(--serif);
    font-size: 18px;
    color: var(--gold-2);
    word-break: break-all;
    transition: color .25s;
}

.footer-email:hover {
    color: #fff;
}

.footer-domain {
    margin-top: 10px;
    font-size: 12px;
    letter-spacing: .08em;
    color: rgba(248, 244, 236, .4);
}

.footer-icp {
    color: rgba(248, 244, 236, .45);
}

.footer-icp:hover {
    color: var(--gold);
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 24px 0 30px;
    border-top: 1px solid rgba(248, 244, 236, .12);
    font-size: 11px;
    letter-spacing: .04em;
    color: rgba(248, 244, 236, .45);
    flex-wrap: wrap;
}

.footer-lang {
    display: flex;
    gap: 16px;
}

.footer-lang a:hover {
    color: var(--gold-2);
}

.back-top {
    position: fixed;
    right: 28px;
    bottom: 28px;
    z-index: 80;
    width: 44px;
    height: 44px;
    background: var(--ink);
    color: var(--paper);
    border: 1px solid rgba(196, 162, 106, .5);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all .35s var(--ease);
}

.back-top.is-visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-top:hover {
    background: var(--gold);
}

/* ---------- 滚动动画 ---------- */
[data-reveal] {
    opacity: 0;
    transform: translateY(26px);
    transition: opacity .8s var(--ease), transform .8s var(--ease);
}

[data-reveal].is-visible {
    opacity: 1;
    transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
    [data-reveal],
    .hero-bg {
        opacity: 1 !important;
        transform: none !important;
        animation: none !important;
        transition: none !important;
    }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1100px) {
    .lot-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .hero-auction {
        width: 260px;
    }

    .product-detail {
        gap: 48px;
    }

    .footer-grid {
        grid-template-columns: 1.4fr 1fr 1.2fr;
        gap: 40px;
    }
}

@media (max-width: 900px) {
    .section {
        padding: 72px 0;
    }

    .main-nav {
        position: fixed;
        top: 0;
        right: 0;
        bottom: 0;
        width: min(78vw, 320px);
        background: var(--paper);
        flex-direction: column;
        justify-content: center;
        gap: 8px;
        padding: 80px 40px;
        transform: translateX(100%);
        transition: transform .4s var(--ease);
        box-shadow: -20px 0 60px rgba(27, 24, 19, .18);
        z-index: 95;
    }

    .main-nav.is-open {
        transform: translateX(0);
    }

    .main-nav a {
        font-size: 17px;
        padding: 10px 0;
    }

    .nav-toggle {
        display: flex;
        z-index: 96;
    }

    .nav-toggle.is-open span:first-child {
        transform: translateY(3.5px) rotate(45deg);
    }

    .nav-toggle.is-open span:last-child {
        transform: translateY(-3.5px) rotate(-45deg);
    }

    .hero-inner {
        flex-direction: column;
        align-items: flex-start;
        justify-content: flex-end;
        padding-top: 100px;
        padding-bottom: 64px;
    }

    .hero-auction {
        width: 100%;
        max-width: 420px;
    }

    .section-head {
        flex-direction: column;
        align-items: flex-start;
        gap: 18px;
    }

    .section-desc {
        text-align: left;
    }

    .about-split {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .about-media img {
        aspect-ratio: 16 / 11;
    }

    .about-stamp {
        left: auto;
        right: 20px;
        bottom: 20px;
        writing-mode: horizontal-tb;
    }

    .journal-grid,
    .article-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .auction-grid {
        grid-template-columns: 1fr;
    }

    .auction-row {
        grid-template-columns: 72px 1fr 24px;
        gap: 18px;
    }

    .auction-row-meta {
        grid-column: 2 / 3;
        justify-content: flex-start;
    }

    .auction-row-arrow {
        display: none;
    }

    .product-detail {
        grid-template-columns: 1fr;
    }

    .product-gallery {
        position: static;
    }

    .contact-layout {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .cta-inner {
        flex-direction: column;
        align-items: flex-start;
        gap: 28px;
    }

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

    .footer-brand {
        grid-column: 1 / -1;
    }

    .timeline {
        grid-template-columns: 1fr;
        gap: 0;
        padding-top: 0;
    }

    .timeline::before {
        top: 0;
        bottom: 0;
        left: 5px;
        right: auto;
        width: 1px;
        height: auto;
    }

    .timeline li {
        padding: 0 0 34px 34px;
    }

    .timeline-year {
        position: static;
        display: inline-block;
        padding: 0;
        margin-bottom: 6px;
        background: none;
        font-size: 19px;
    }

    .timeline-dot {
        top: 4px;
        left: 0;
        width: 11px;
        height: 11px;
        box-shadow: 0 0 0 4px var(--paper);
    }

    .value-grid {
        grid-template-columns: 1fr;
    }

    .auction-meta {
        flex-wrap: wrap;
        gap: 28px 40px;
    }
}

@media (max-width: 640px) {
    .container {
        padding: 0 20px;
    }

    .topbar-note {
        display: none;
    }

    .topbar-inner {
        justify-content: flex-end;
    }

    .header-inner {
        height: 72px;
    }

    .brand-seal {
        width: 38px;
        height: 38px;
        font-size: 19px;
    }

    .brand-text strong {
        font-size: 16px;
    }

    .hero {
        min-height: 78vh;
    }

    .hero-inner {
        min-height: 78vh;
        padding-top: 80px;
    }

    .hero-title {
        font-size: clamp(34px, 10vw, 48px);
    }

    .hero-desc {
        font-size: 14px;
        line-height: 1.9;
    }

    .lot-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 26px 16px;
    }

    .lot-body h3 {
        font-size: 14px;
    }

    .journal-grid,
    .article-grid,
    .article-grid--three {
        grid-template-columns: 1fr;
    }

    .section-head h2 {
        font-size: 28px;
    }

    .stat-row {
        gap: 28px;
    }

    .stat strong {
        font-size: 28px;
    }

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

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 36px;
    }

    .footer-brand {
        grid-column: auto;
    }

    .search-box {
        width: 100%;
    }

    .product-toolbar {
        gap: 16px;
    }

    .cat-chips {
        order: 3;
        flex-basis: 100%;
    }

    .sort-select {
        margin-left: auto;
    }

    .auction-hero-inner {
        padding-top: 90px;
        padding-bottom: 48px;
    }

    .auction-meta {
        gap: 22px 30px;
    }

    .contact-info {
        padding: 28px 24px;
    }

    .contact-email {
        font-size: 17px;
    }

    .filter-bar {
        align-items: flex-start;
        flex-direction: column;
    }
}