/* Kawakids / 科伟合电子 — Premium Industrial Editorial */
:root {
    --ink: #0B0E11;
    --ink-soft: #151A1F;
    --ink-muted: #2A3038;
    --brass: #C4A574;
    --brass-deep: #A8895A;
    --brass-soft: rgba(196, 165, 116, 0.16);
    --bone: #F6F3EE;
    --stone: #E8E2D9;
    --stone-deep: #D6CFC4;
    --text: #12151A;
    --text-secondary: #4A4F57;
    --text-muted: #7A7F88;
    --text-on-ink: #F6F3EE;
    --text-on-ink-muted: rgba(246, 243, 238, 0.62);
    --border: rgba(11, 14, 17, 0.1);
    --border-on-ink: rgba(246, 243, 238, 0.12);
    --header-h: 76px;
    --container: 1200px;
    --section-y: clamp(80px, 10vw, 128px);
    --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
    --font: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    --font-display: "Noto Serif SC", "Songti SC", "SimSun", serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body.site-body {
    font-family: var(--font);
    color: var(--text);
    background: var(--bone);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button { font-family: inherit; }

.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 clamp(20px, 4vw, 40px);
}

.site-main { min-height: 50vh; }
.site-main.has-hero { padding-top: 0; }

/* —— Typography —— */
.eyebrow {
    display: inline-block;
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--brass);
    margin-bottom: 16px;
}
.eyebrow-light { color: var(--brass); }
.display-title {
    font-family: var(--font-display);
    font-size: clamp(28px, 4vw, 44px);
    font-weight: 600;
    line-height: 1.25;
    letter-spacing: 0.02em;
    color: var(--ink);
    max-width: 18em;
}
.display-title-light { color: var(--text-on-ink); }
.display-title-sm { font-size: clamp(24px, 3vw, 34px); }
.lead {
    font-size: clamp(16px, 1.6vw, 18px);
    color: var(--text-secondary);
    line-height: 1.8;
    max-width: 36em;
}
.text-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.04em;
    color: var(--ink);
    border-bottom: 1px solid var(--brass);
    padding-bottom: 2px;
    transition: color .25s var(--ease), border-color .25s;
}
.text-link:hover { color: var(--brass-deep); border-color: var(--brass-deep); }
.meta-tag {
    display: inline-block;
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--brass);
    margin-right: 12px;
}

/* —— Buttons —— */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 46px;
    padding: 0 26px;
    border-radius: 0;
    border: 1px solid transparent;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.08em;
    transition: background .25s var(--ease), color .25s, border-color .25s, transform .25s var(--ease);
    cursor: pointer;
}
.btn:hover { transform: translateY(-1px); }
.btn-sm { min-height: 38px; padding: 0 18px; font-size: 13px; }
.btn-lg { min-height: 54px; padding: 0 32px; font-size: 14px; }
.btn-block { width: 100%; }
.btn-brass {
    background: var(--brass);
    color: var(--ink);
    border-color: var(--brass);
}
.btn-brass:hover { background: var(--brass-deep); border-color: var(--brass-deep); }
.btn-ink {
    background: var(--ink);
    color: var(--bone);
    border-color: var(--ink);
}
.btn-ink:hover { background: var(--ink-soft); }
.btn-ghost-light {
    background: transparent;
    color: var(--bone);
    border-color: rgba(246, 243, 238, 0.4);
}
.btn-ghost-light:hover { background: rgba(246, 243, 238, 0.08); border-color: var(--bone); }
.btn-outline {
    background: transparent;
    color: var(--ink);
    border-color: var(--ink);
}
.btn-outline:hover { background: var(--ink); color: var(--bone); }

/* —— Header —— */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 200;
    height: var(--header-h);
    background: transparent;
    border-bottom: 1px solid transparent;
    transition: background .35s var(--ease), border-color .35s, backdrop-filter .35s, box-shadow .35s;
}
.site-header .site-brand-name,
.site-header .nav-link,
.site-header .site-phone { color: var(--bone); transition: color .3s; }
.site-header .site-brand-en { color: rgba(246, 243, 238, 0.55); transition: color .3s; }
.site-header .nav-link.active,
.site-header .nav-link:hover { color: var(--brass); }
.site-header .site-brand-mark { background: var(--brass); }
.site-header .site-nav-toggle span { background: var(--bone); }

/* 滚出深色区：骨白实色顶栏 */
.site-header.is-solid {
    background: rgba(246, 243, 238, 0.94);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom-color: var(--border);
    box-shadow: 0 1px 0 rgba(11, 14, 17, 0.04);
}
.site-header.is-solid .site-brand-name,
.site-header.is-solid .nav-link { color: var(--ink); }
.site-header.is-solid .site-brand-en,
.site-header.is-solid .site-phone { color: var(--text-muted); }
.site-header.is-solid .nav-link.active,
.site-header.is-solid .nav-link:hover { color: var(--ink); }
.site-header.is-solid .site-nav-toggle span { background: var(--ink); }

/* 仍在深色区内但已滚动：深色玻璃 */
.site-header.is-over-hero.is-scrolled:not(.is-solid) {
    background: rgba(11, 14, 17, 0.78);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom-color: var(--border-on-ink);
}

.site-header-inner {
    height: var(--header-h);
    display: flex;
    align-items: center;
    gap: 32px;
}
.site-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}
.site-brand-mark {
    width: 10px;
    height: 28px;
    background: var(--brass);
    transition: background .3s;
}
.site-brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.site-brand-name {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    letter-spacing: 0.04em;
    transition: color .3s;
}
.site-brand-en {
    font-size: 10px;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-top: 3px;
    transition: color .3s;
}
.site-nav {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-left: auto;
}
.nav-link {
    padding: 8px 14px;
    font-size: 14px;
    font-weight: 400;
    color: var(--text-secondary);
    letter-spacing: 0.04em;
    position: relative;
    transition: color .25s;
}
.nav-link::after {
    content: "";
    position: absolute;
    left: 14px;
    right: 14px;
    bottom: 4px;
    height: 1px;
    background: var(--brass);
    transform: scaleX(0);
    transition: transform .3s var(--ease);
}
.nav-link:hover,
.nav-link.active { color: var(--ink); }
.nav-link.active::after,
.nav-link:hover::after { transform: scaleX(1); }

.site-header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-shrink: 0;
}
.site-phone {
    font-size: 13px;
    letter-spacing: 0.04em;
    color: var(--text-secondary);
    transition: color .3s;
}
.site-nav-toggle {
    display: none;
    width: 40px;
    height: 40px;
    border: none;
    background: transparent;
    cursor: pointer;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
}
.site-nav-toggle span {
    display: block;
    width: 22px;
    height: 1.5px;
    background: var(--ink);
    transition: background .3s, transform .3s;
}

/* —— Hero —— */
.hero {
    position: relative;
    min-height: 100vh;
    min-height: 100dvh;
    background: var(--ink);
    overflow: hidden;
}
.hero-slider {
    position: absolute;
    inset: 0;
}
.hero-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    visibility: hidden;
    transition: opacity 1s var(--ease), visibility 1s;
}
.hero-slide.active {
    opacity: 1;
    visibility: visible;
}
.hero-slide-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    transform: scale(1.04);
    transition: transform 8s linear;
}
.hero-slide.active .hero-slide-bg {
    transform: scale(1);
}
.hero-overlay {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(105deg, rgba(11, 14, 17, 0.82) 0%, rgba(11, 14, 17, 0.45) 48%, rgba(11, 14, 17, 0.28) 100%),
        linear-gradient(to top, rgba(11, 14, 17, 0.55) 0%, transparent 45%);
}
.hero-content {
    position: relative;
    z-index: 2;
    height: 100vh;
    height: 100dvh;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding-bottom: clamp(88px, 14vh, 140px);
    padding-top: var(--header-h);
    max-width: var(--container);
}
.hero-brand {
    font-family: var(--font-display);
    font-size: clamp(22px, 3vw, 32px);
    font-weight: 600;
    color: var(--bone);
    letter-spacing: 0.06em;
    margin-bottom: 20px;
}
.hero-brand span {
    display: block;
    margin-top: 8px;
    font-family: var(--font);
    font-size: 11px;
    font-weight: 400;
    letter-spacing: 0.32em;
    text-transform: uppercase;
    color: var(--brass);
}
.hero-title {
    font-family: var(--font-display);
    font-size: clamp(36px, 6vw, 68px);
    font-weight: 600;
    line-height: 1.15;
    color: var(--bone);
    max-width: 12em;
    margin-bottom: 18px;
}
.hero-subtitle {
    font-size: clamp(15px, 1.5vw, 17px);
    color: var(--text-on-ink-muted);
    max-width: 32em;
    margin-bottom: 36px;
    line-height: 1.7;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.hero-dots {
    position: absolute;
    bottom: 40px;
    right: clamp(20px, 4vw, 40px);
    z-index: 3;
    display: flex;
    gap: 10px;
}
.hero-dot {
    width: 28px;
    height: 2px;
    border: none;
    background: rgba(246, 243, 238, 0.28);
    cursor: pointer;
    padding: 0;
    transition: background .3s, width .3s;
}
.hero-dot.active { background: var(--brass); width: 44px; }
.hero-scroll {
    position: absolute;
    bottom: 36px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    width: 1px;
    height: 48px;
    background: rgba(246, 243, 238, 0.2);
    overflow: hidden;
}
.hero-scroll span {
    display: block;
    width: 100%;
    height: 16px;
    background: var(--brass);
    animation: scrollPulse 2s var(--ease) infinite;
}
@keyframes scrollPulse {
    0% { transform: translateY(-20px); opacity: 0; }
    40% { opacity: 1; }
    100% { transform: translateY(52px); opacity: 0; }
}

/* —— Marquee —— */
.marquee-strip {
    background: var(--ink);
    border-top: 1px solid var(--border-on-ink);
    border-bottom: 1px solid var(--border-on-ink);
    overflow: hidden;
    padding: 14px 0;
}
.marquee-track {
    display: flex;
    gap: 28px;
    white-space: nowrap;
    width: max-content;
    animation: marquee 36s linear infinite;
    font-size: 12px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--text-on-ink-muted);
}
.marquee-track span:nth-child(odd) { color: var(--brass); }
@keyframes marquee {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
}

/* —— Sections —— */
.section { padding: var(--section-y) 0; }
.section-bone { background: var(--bone); }
.section-stone { background: var(--stone); }
.section-ink {
    background: var(--ink);
    color: var(--text-on-ink);
}
.section-head-editorial { margin-bottom: clamp(40px, 6vw, 64px); }
.section-head-row {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: clamp(36px, 5vw, 56px);
    flex-wrap: wrap;
}

/* —— Intro —— */
.intro-split {
    display: grid;
    grid-template-columns: 1fr 1.05fr;
    gap: clamp(40px, 6vw, 80px);
    align-items: center;
}
.intro-copy .display-title { margin-bottom: 24px; }
.intro-rich { margin-bottom: 32px; color: var(--text-secondary); }
.intro-figure {
    overflow: hidden;
    aspect-ratio: 4 / 5;
    background: var(--stone);
}
.intro-figure img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.intro-visual { position: relative; }
.intro-stats {
    position: absolute;
    left: -24px;
    bottom: 28px;
    display: flex;
    flex-direction: column;
    gap: 1px;
    background: var(--ink);
    min-width: 160px;
}
.intro-stat {
    padding: 18px 22px;
    border-bottom: 1px solid var(--border-on-ink);
}
.intro-stat:last-child { border-bottom: none; }
.intro-stat strong {
    display: block;
    font-family: var(--font-display);
    font-size: 28px;
    color: var(--brass);
    line-height: 1.2;
}
.intro-stat span {
    font-size: 12px;
    letter-spacing: 0.08em;
    color: var(--text-on-ink-muted);
}

/* —— Advantages —— */
.adv-list {
    counter-reset: adv;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    border-top: 1px solid var(--border-on-ink);
}
.adv-item {
    padding: 36px 28px 36px 0;
    border-right: 1px solid var(--border-on-ink);
    display: flex;
    flex-direction: column;
    gap: 28px;
}
.adv-item:last-child { border-right: none; padding-right: 0; }
.adv-item:not(:first-child) { padding-left: 28px; }
.adv-num {
    font-family: var(--font-display);
    font-size: 42px;
    font-weight: 400;
    color: var(--brass);
    line-height: 1;
    opacity: 0.85;
}
.adv-num::before {
    counter-increment: adv;
    content: counter(adv, decimal-leading-zero);
}
.adv-body h3 {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--bone);
}
.adv-body p {
    font-size: 14px;
    color: var(--text-on-ink-muted);
    line-height: 1.7;
}

/* —— Product mosaic —— */
.product-mosaic {
    display: grid;
    grid-template-columns: 1.35fr 1fr 1fr;
    grid-template-rows: auto auto;
    gap: 20px;
}
.mosaic-item {
    display: flex;
    flex-direction: column;
    background: var(--stone);
    overflow: hidden;
    transition: transform .35s var(--ease);
}
.mosaic-item:hover { transform: translateY(-4px); }
.mosaic-featured {
    grid-row: 1 / span 2;
}
.mosaic-featured .mosaic-media {
    flex: 1;
    min-height: 480px;
}
.mosaic-media {
    overflow: hidden;
    aspect-ratio: 4 / 3;
    background: var(--ink-muted);
}
.mosaic-featured .mosaic-media { aspect-ratio: auto; }
.mosaic-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.mosaic-caption {
    padding: 22px 24px 26px;
    background: var(--bone);
    border: 1px solid var(--border);
    border-top: none;
}
.mosaic-featured .mosaic-caption {
    background: var(--ink);
    border-color: transparent;
    color: var(--bone);
}
.mosaic-caption h3 {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
}
.mosaic-caption p {
    font-size: 13px;
    color: var(--text-muted);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 14px;
}
.mosaic-featured .mosaic-caption p { color: var(--text-on-ink-muted); }
.mosaic-cta {
    font-size: 12px;
    letter-spacing: 0.12em;
    color: var(--brass);
}

/* —— Partners —— */
.partner-section { padding: clamp(56px, 7vw, 88px) 0; }
.partner-head { text-align: center; margin-bottom: 40px; }
.partner-head .display-title { margin: 0 auto; }
.partner-row {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 12px 40px;
}
.partner-item {
    font-size: 14px;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    opacity: 0.75;
    transition: opacity .25s, color .25s;
}
.partner-item:hover { opacity: 1; color: var(--ink); }
.partner-item img {
    height: 36px;
    width: auto;
    object-fit: contain;
    filter: grayscale(1) opacity(0.65);
    transition: filter .25s;
}
.partner-item:hover img { filter: none; }

/* —— News editorial —— */
.news-editorial {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 28px 40px;
}
.news-ed-item {
    display: grid;
    gap: 20px;
    padding-bottom: 28px;
    border-bottom: 1px solid var(--border);
    transition: opacity .25s;
}
.news-ed-item:hover { opacity: 0.88; }
.news-ed-featured {
    grid-row: 1 / span 3;
    border-bottom: none;
    padding-bottom: 0;
}
.news-ed-media {
    overflow: hidden;
    aspect-ratio: 16 / 10;
    background: var(--stone);
}
.news-ed-featured .news-ed-media { aspect-ratio: 4 / 5; min-height: 420px; }
.news-ed-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.news-ed-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
    font-size: 12px;
    color: var(--text-muted);
    letter-spacing: 0.06em;
}
.news-ed-body h3 {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 10px;
}
.news-ed-featured .news-ed-body h3 { font-size: clamp(24px, 2.5vw, 32px); }
.news-ed-body p {
    font-size: 14px;
    color: var(--text-secondary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.news-ed-featured .news-ed-body p { -webkit-line-clamp: 3; }

/* —— CTA band —— */
.cta-band {
    position: relative;
    background: var(--ink);
    padding: clamp(80px, 12vw, 140px) 0;
    overflow: hidden;
}
.cta-band-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 60% 80% at 85% 50%, rgba(196, 165, 116, 0.12), transparent 60%),
        linear-gradient(135deg, var(--ink) 0%, var(--ink-soft) 100%);
}
.cta-band-inner {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    flex-wrap: wrap;
}
.cta-band-copy h2 {
    font-family: var(--font-display);
    font-size: clamp(28px, 4vw, 44px);
    font-weight: 600;
    color: var(--bone);
    margin-bottom: 14px;
    max-width: 14em;
}
.cta-band-copy p {
    color: var(--text-on-ink-muted);
    max-width: 36em;
    font-size: 16px;
}
.cta-band-actions { display: flex; flex-wrap: wrap; gap: 14px; }

/* —— Page banner —— */
.page-banner {
    position: relative;
    background: var(--ink);
    padding: calc(var(--header-h) + 64px) 0 72px;
    overflow: hidden;
}
.page-banner-veil {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 70% 60% at 80% 40%, rgba(196, 165, 116, 0.14), transparent 55%),
        linear-gradient(160deg, var(--ink) 0%, #12161C 100%);
}
.page-banner-inner { position: relative; z-index: 1; }
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 12px;
    letter-spacing: 0.08em;
    color: var(--text-on-ink-muted);
    margin-bottom: 24px;
}
.breadcrumb a:hover { color: var(--brass); }
.breadcrumb-sep {
    width: 16px;
    height: 1px;
    background: rgba(196, 165, 116, 0.5);
}
.breadcrumb-current { color: var(--brass); }
.page-banner-title {
    font-family: var(--font-display);
    font-size: clamp(32px, 5vw, 52px);
    font-weight: 600;
    color: var(--bone);
    line-height: 1.2;
    max-width: 16em;
}
.page-banner-desc {
    margin-top: 16px;
    font-size: 16px;
    color: var(--text-on-ink-muted);
    max-width: 36em;
}
.page-banner-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

/* —— Product catalog —— */
.filter-rail {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 48px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border);
}
.filter-chip {
    padding: 10px 18px;
    font-size: 13px;
    letter-spacing: 0.06em;
    color: var(--text-secondary);
    border: 1px solid transparent;
    transition: color .25s, border-color .25s, background .25s;
}
.filter-chip:hover { color: var(--ink); }
.filter-chip.active {
    color: var(--ink);
    border-color: var(--ink);
    background: transparent;
}
.product-catalog {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 28px 24px;
}
.catalog-featured {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 0;
    background: var(--ink);
    color: var(--bone);
}
.catalog-featured .catalog-media { aspect-ratio: 16 / 10; }
.catalog-featured .catalog-body {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: clamp(32px, 5vw, 56px);
    background: var(--ink);
}
.catalog-featured .catalog-body p { color: var(--text-on-ink-muted); }
.catalog-featured .text-link { color: var(--brass); border-color: var(--brass); }
.catalog-item:not(.catalog-featured) {
    display: flex;
    flex-direction: column;
    background: var(--stone);
}
.catalog-media {
    overflow: hidden;
    aspect-ratio: 4 / 3;
    background: var(--ink-muted);
}
.catalog-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.catalog-body {
    padding: 24px 26px 28px;
    background: var(--bone);
    border: 1px solid var(--border);
    border-top: none;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.catalog-sub {
    font-size: 11px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--brass);
    margin-bottom: 10px;
}
.catalog-body h3 {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 10px;
}
.catalog-body p {
    font-size: 14px;
    color: var(--text-secondary);
    flex: 1;
    margin-bottom: 18px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* —— Product detail —— */
.product-detail-hero {
    display: grid;
    grid-template-columns: 1.15fr 1fr;
    gap: clamp(32px, 5vw, 64px);
    align-items: center;
    margin-bottom: 64px;
}
.product-detail-cover {
    overflow: hidden;
    aspect-ratio: 4 / 5;
    background: var(--stone);
}
.product-detail-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.product-detail-summary .lead { margin-bottom: 28px; }
.specs-board {
    margin-bottom: 56px;
    padding: 40px 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}
.specs-title {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 28px;
}
.specs-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0; }
.specs-row {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: 16px;
    padding: 16px 0;
    border-bottom: 1px solid var(--border);
}
.specs-row:nth-last-child(-n+2) { border-bottom: none; }
.specs-row dt {
    font-size: 13px;
    letter-spacing: 0.06em;
    color: var(--text-muted);
}
.specs-row dd {
    font-size: 15px;
    color: var(--ink);
    font-weight: 500;
}

/* —— News list —— */
.news-layout {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: clamp(32px, 5vw, 64px);
    align-items: start;
}
.news-sidebar .eyebrow { margin-bottom: 20px; }
.sidebar-nav { display: flex; flex-direction: column; gap: 4px; }
.sidebar-nav a {
    display: block;
    padding: 10px 0;
    font-size: 14px;
    color: var(--text-secondary);
    border-bottom: 1px solid transparent;
    transition: color .25s, border-color .25s;
}
.sidebar-nav a:hover,
.sidebar-nav a.active {
    color: var(--ink);
    border-bottom-color: var(--brass);
}
.article-stream { display: flex; flex-direction: column; gap: 0; }
.stream-item {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 28px;
    padding: 28px 0;
    border-bottom: 1px solid var(--border);
    align-items: center;
}
.stream-featured {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    margin-bottom: 8px;
}
.stream-media {
    overflow: hidden;
    aspect-ratio: 4 / 3;
    background: var(--stone);
}
.stream-featured .stream-media { aspect-ratio: 16 / 11; }
.stream-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.stream-body h3 {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 10px;
    line-height: 1.4;
}
.stream-featured .stream-body h3 { font-size: clamp(24px, 2.5vw, 32px); }
.stream-body p {
    font-size: 14px;
    color: var(--text-secondary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* —— Article / About —— */
.article-reader,
.about-page { max-width: 820px; }
.article-cover,
.about-hero-figure {
    margin-bottom: 40px;
    overflow: hidden;
    aspect-ratio: 16 / 9;
    background: var(--stone);
}
.article-cover img,
.about-hero-figure img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.about-hero-figure { max-width: none; aspect-ratio: 21 / 9; }
.about-page { max-width: 960px; }
.article-back { margin-top: 48px; padding-top: 32px; border-top: 1px solid var(--border); }

.timeline { margin-top: 72px; padding-top: 56px; border-top: 1px solid var(--border); }
.timeline .display-title { margin-bottom: 40px; }
.timeline-list { display: flex; flex-direction: column; }
.timeline-item {
    display: grid;
    grid-template-columns: 100px 1fr;
    gap: 28px;
    padding: 24px 0;
    border-bottom: 1px solid var(--border);
    align-items: baseline;
}
.timeline-year {
    font-family: var(--font-display);
    font-size: 22px;
    color: var(--brass);
    font-weight: 600;
}
.timeline-event {
    font-size: 16px;
    color: var(--text-secondary);
}

/* —— Contact —— */
.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(40px, 6vw, 80px);
    align-items: start;
}
.contact-info .display-title { margin-bottom: 20px; }
.contact-list {
    margin-top: 36px;
    display: flex;
    flex-direction: column;
}
.contact-list li {
    display: grid;
    grid-template-columns: 100px 1fr;
    gap: 16px;
    padding: 18px 0;
    border-bottom: 1px solid var(--border);
}
.contact-list label {
    font-size: 12px;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    padding-top: 2px;
}
.contact-list span,
.contact-list a {
    font-size: 15px;
    color: var(--ink);
}
.contact-list a:hover { color: var(--brass-deep); }
.contact-side { display: flex; flex-direction: column; gap: 28px; }
.contact-qrcode {
    text-align: center;
    padding: 28px;
    background: var(--stone);
}
.contact-qrcode img {
    width: 140px;
    height: 140px;
    margin: 0 auto 12px;
    object-fit: contain;
}
.contact-qrcode p {
    font-size: 13px;
    color: var(--text-muted);
    letter-spacing: 0.06em;
}
.contact-form-box {
    padding: 36px 32px;
    background: var(--ink);
    color: var(--bone);
}
.contact-form-box h3 {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 8px;
}
.form-tip {
    font-size: 13px;
    color: var(--text-on-ink-muted);
    margin-bottom: 28px;
}
.form-row { margin-bottom: 14px; }
.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 14px 16px;
    background: rgba(246, 243, 238, 0.06);
    border: 1px solid var(--border-on-ink);
    color: var(--bone);
    font-family: inherit;
    font-size: 14px;
    border-radius: 0;
    outline: none;
    transition: border-color .25s, background .25s;
}
.contact-form input::placeholder,
.contact-form textarea::placeholder { color: rgba(246, 243, 238, 0.35); }
.contact-form input:focus,
.contact-form textarea:focus {
    border-color: var(--brass);
    background: rgba(246, 243, 238, 0.09);
}
.contact-form textarea { resize: vertical; min-height: 110px; }
.form-msg {
    margin-top: 14px;
    font-size: 13px;
    min-height: 1.2em;
    color: var(--text-on-ink-muted);
}
.form-msg.is-ok { color: #8FCB8F; }
.form-msg.is-err { color: #E8A0A0; }

/* —— Rich text —— */
.rich-text {
    font-size: 16px;
    line-height: 1.9;
    color: var(--text-secondary);
}
.rich-text h1, .rich-text h2, .rich-text h3, .rich-text h4 {
    font-family: var(--font-display);
    color: var(--ink);
    font-weight: 600;
    margin: 1.6em 0 0.6em;
    line-height: 1.35;
}
.rich-text h2 { font-size: 1.5em; }
.rich-text h3 { font-size: 1.25em; }
.rich-text p { margin-bottom: 1.1em; }
.rich-text ul, .rich-text ol {
    margin: 0 0 1.2em 1.2em;
    list-style: disc;
}
.rich-text ol { list-style: decimal; }
.rich-text li { margin-bottom: 0.4em; }
.rich-text img {
    margin: 1.5em 0;
    max-width: 100%;
}
.rich-text a { color: var(--brass-deep); border-bottom: 1px solid var(--brass); }
.rich-text blockquote {
    margin: 1.5em 0;
    padding: 16px 24px;
    border-left: 2px solid var(--brass);
    background: var(--stone);
    color: var(--text);
}
.section-ink .rich-text,
.section-ink .rich-text h1,
.section-ink .rich-text h2,
.section-ink .rich-text h3 { color: var(--bone); }

/* —— Image zoom —— */
.img-zoom {
    transition: transform .7s var(--ease);
}
a:hover .img-zoom,
figure:hover .img-zoom {
    transform: scale(1.05);
}

/* —— Fade up —— */
.fade-up {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity .7s var(--ease), transform .7s var(--ease);
}
.fade-up.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* —— Footer —— */
.site-footer {
    background: var(--ink);
    color: var(--text-on-ink-muted);
    padding: 72px 0 0;
}
.footer-top {
    display: grid;
    grid-template-columns: 1.2fr 2fr;
    gap: 48px;
    padding-bottom: 56px;
    border-bottom: 1px solid var(--border-on-ink);
}
.footer-mark {
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 600;
    color: var(--bone);
    letter-spacing: 0.04em;
}
.footer-en {
    font-size: 11px;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    color: var(--brass);
    margin: 8px 0 20px;
}
.footer-desc {
    font-size: 14px;
    line-height: 1.7;
    max-width: 28em;
}
.footer-desc-sub { margin-top: 8px; opacity: 0.7; }
.footer-cols {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}
.footer-col h4 {
    font-size: 12px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--brass);
    margin-bottom: 20px;
    font-weight: 500;
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col a {
    font-size: 14px;
    color: var(--text-on-ink-muted);
    transition: color .25s;
}
.footer-col a:hover { color: var(--bone); }
.footer-contact li { font-size: 14px; line-height: 1.6; }
.footer-bottom {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    padding: 24px 0;
    font-size: 12px;
    letter-spacing: 0.04em;
}
.footer-bottom a:hover { color: var(--brass); }
.footer-divider { margin: 0 8px; opacity: 0.4; }

/* —— Pagination / empty —— */
.pagination-wrap {
    margin-top: 48px;
    display: flex;
    justify-content: center;
}
.pagination-wrap ul {
    display: flex;
    gap: 6px;
    list-style: none;
}
.pagination-wrap a,
.pagination-wrap span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 12px;
    font-size: 14px;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    transition: background .2s, color .2s, border-color .2s;
}
.pagination-wrap .active span,
.pagination-wrap a:hover {
    background: var(--ink);
    color: var(--bone);
    border-color: var(--ink);
}
.empty-tip {
    text-align: center;
    padding: 80px 20px;
    color: var(--text-muted);
    font-size: 15px;
    letter-spacing: 0.06em;
}

/* —— Responsive —— */
@media (max-width: 1024px) {
    .intro-split { grid-template-columns: 1fr; }
    .intro-figure { aspect-ratio: 16 / 10; max-height: 420px; }
    .intro-stats {
        position: static;
        flex-direction: row;
        margin-top: 20px;
        min-width: 0;
    }
    .intro-stat { flex: 1; }
    .adv-list { grid-template-columns: 1fr 1fr; }
    .adv-item {
        padding: 28px 20px !important;
        border-right: none;
        border-bottom: 1px solid var(--border-on-ink);
    }
    .adv-item:nth-child(odd) { border-right: 1px solid var(--border-on-ink); }
    .product-mosaic {
        grid-template-columns: 1fr 1fr;
        grid-template-rows: auto;
    }
    .mosaic-featured {
        grid-column: 1 / -1;
        grid-row: auto;
    }
    .mosaic-featured .mosaic-media { min-height: 320px; }
    .news-editorial { grid-template-columns: 1fr; }
    .news-ed-featured { grid-row: auto; }
    .news-ed-featured .news-ed-media { min-height: 280px; aspect-ratio: 16 / 10; }
    .product-detail-hero { grid-template-columns: 1fr; }
    .product-detail-cover { aspect-ratio: 16 / 10; max-height: 480px; }
    .catalog-featured { grid-template-columns: 1fr; }
    .news-layout { grid-template-columns: 1fr; }
    .footer-top { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .site-nav {
        display: none;
        position: absolute;
        top: var(--header-h);
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--ink);
        padding: 16px 20px 28px;
        gap: 0;
        border-bottom: 1px solid var(--border-on-ink);
    }
    .site-nav.open { display: flex; }
    .site-nav .nav-link {
        color: var(--bone) !important;
        padding: 14px 8px;
        border-bottom: 1px solid var(--border-on-ink);
        width: 100%;
    }
    .site-nav .nav-link::after { display: none; }
    .site-nav .nav-link.active { color: var(--brass) !important; }
    .site-nav-toggle { display: flex; }
    .site-phone { display: none; }
    .site-header-actions .btn-sm { display: none; }

    .hero-title { font-size: clamp(30px, 9vw, 42px); }
    .hero-content { padding-bottom: 100px; }
    .hero-scroll { display: none; }

    .adv-list { grid-template-columns: 1fr; }
    .adv-item:nth-child(odd) { border-right: none; }

    .product-mosaic { grid-template-columns: 1fr; }
    .product-catalog { grid-template-columns: 1fr; }
    .specs-list { grid-template-columns: 1fr; }
    .specs-row:nth-last-child(-n+2) { border-bottom: 1px solid var(--border); }
    .specs-row:last-child { border-bottom: none; }
    .specs-row { grid-template-columns: 1fr; gap: 4px; }

    .stream-item,
    .stream-featured { grid-template-columns: 1fr; gap: 16px; }
    .news-ed-featured .news-ed-media { min-height: 0; }
    .contact-layout { grid-template-columns: 1fr; }
    .contact-list li { grid-template-columns: 1fr; gap: 4px; }
    .footer-cols { grid-template-columns: 1fr; gap: 36px; }
    .cta-band-inner { flex-direction: column; align-items: flex-start; }
    .intro-stats { flex-direction: column; }
    .section-head-row { flex-direction: column; align-items: flex-start; }
    .page-banner { padding: calc(var(--header-h) + 40px) 0 48px; }
    .about-hero-figure { aspect-ratio: 16 / 10; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
    .fade-up { opacity: 1; transform: none; }
    .marquee-track { animation: none; }
}