/* SU 插件定制工坊 — 工业定制工坊视觉 */
:root {
    --ink: #0c0f14;
    --ink-2: #151a22;
    --ink-3: #1e2530;
    --surface: #f4f1ea;
    --surface-2: #ebe6dc;
    --paper: #faf8f4;
    --amber: #d4922a;
    --amber-bright: #e8a838;
    --teal: #2a9d8f;
    --teal-bright: #3db8a8;
    --text: #1a1f28;
    --text-soft: #5a6575;
    --text-muted: #8a93a0;
    --line: rgba(26, 31, 40, 0.12);
    --glow-amber: rgba(232, 168, 56, 0.35);
    --glow-teal: rgba(61, 184, 168, 0.25);
    --radius: 4px;
    --font-display: "Syne", "Noto Sans SC", sans-serif;
    --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    --shadow: 0 12px 40px rgba(12, 15, 20, 0.12);
    --header-h: 80px;
}

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

html { scroll-behavior: smooth; }

body.su-body,
body {
    font-family: var(--font-body);
    color: var(--text);
    line-height: 1.65;
    background: var(--paper);
    overflow-x: hidden;
}

a { text-decoration: none; color: inherit; transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease, transform 0.2s ease; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.su-skip {
    position: absolute;
    left: -9999px;
    top: 0;
    background: var(--amber);
    color: var(--ink);
    padding: 8px 16px;
    z-index: 9999;
}
.su-skip:focus { left: 12px; top: 12px; }

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 10px 28px;
    border-radius: var(--radius);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    border: 2px solid transparent;
    letter-spacing: 0.02em;
}
.btn-primary {
    background: linear-gradient(135deg, var(--amber-bright), var(--amber));
    color: var(--ink);
    border-color: transparent;
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px var(--glow-amber);
}
.btn-outline {
    background: transparent;
    color: var(--amber);
    border-color: var(--amber);
}
.btn-outline:hover {
    background: var(--amber);
    color: var(--ink);
}
.btn-lg { padding: 14px 36px; font-size: 16px; }
.btn-sm { min-height: 40px; padding: 8px 18px; font-size: 13px; }

.header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    height: var(--header-h);
    background: rgba(12, 15, 20, 0.94);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(232, 168, 56, 0.14);
    transition: box-shadow 0.25s ease, background 0.25s ease;
}
.header.scrolled {
    background: rgba(12, 15, 20, 0.98);
    box-shadow: 0 10px 28px rgba(0, 0, 0, 0.28);
}

.nav-container {
    max-width: 1320px;
    height: 100%;
    margin: 0 auto;
    padding: 0 28px;
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    column-gap: 28px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
    color: #fff;
    min-width: 0;
    height: 100%;
}
.logo-icon {
    width: 40px;
    height: 40px;
    border-radius: 9px;
    display: block;
    flex-shrink: 0;
    object-fit: contain;
}
.logo-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
    line-height: 1.1;
}
.logo-mark {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 12px;
    letter-spacing: 0.14em;
    color: var(--amber-bright);
}
.logo-name {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 17px;
    letter-spacing: 0.04em;
    white-space: nowrap;
}

.nav-menu {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 0;
    height: 100%;
}
.nav-list {
    display: flex;
    flex-wrap: nowrap;
    align-items: stretch;
    justify-content: center;
    gap: 2px;
    height: 100%;
}
.nav-list > li {
    display: flex;
    align-items: stretch;
    height: 100%;
}
.nav-item { position: relative; }
.nav-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 100%;
    min-height: 100%;
    padding: 0 14px;
    border: 0;
    background: transparent;
    color: rgba(255, 255, 255, 0.68);
    font-family: var(--font-body);
    font-size: 15px;
    font-weight: 500;
    letter-spacing: 0.02em;
    white-space: nowrap;
    cursor: pointer;
    border-radius: 0;
    position: relative;
    transition: color 0.18s ease, background 0.18s ease;
}
.nav-link::after {
    content: "";
    position: absolute;
    left: 14px;
    right: 14px;
    bottom: 18px;
    height: 2px;
    background: var(--amber-bright);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform 0.2s ease;
    opacity: 0.95;
}
.nav-link:hover,
.nav-link.is-active,
.nav-item.is-open > .nav-link {
    color: #fff;
}
.nav-link:hover::after,
.nav-link.is-active::after,
.nav-item.is-open > .nav-link::after {
    transform: scaleX(1);
}
.nav-caret {
    width: 0;
    height: 0;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 5px solid currentColor;
    opacity: 0.7;
    transition: transform 0.2s ease;
}
.nav-item.is-open .nav-caret { transform: rotate(180deg); }

/* 贴合顶栏底边展开；透明桥接区保证鼠标可移入下拉 */
.nav-dropdown {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(4px);
    min-width: 180px;
    padding: 10px 8px 8px;
    background: #151a22;
    border: 1px solid rgba(232, 168, 56, 0.22);
    border-radius: 6px;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.45);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s;
    z-index: 20;
}
.nav-dropdown::before {
    content: "";
    position: absolute;
    top: -5px;
    left: 50%;
    width: 10px;
    height: 10px;
    background: #151a22;
    border-left: 1px solid rgba(232, 168, 56, 0.22);
    border-top: 1px solid rgba(232, 168, 56, 0.22);
    transform: translateX(-50%) rotate(45deg);
}
/* 顶部透明命中桥：覆盖顶栏与菜单之间的视觉空隙，避免 hover 丢失 */
.nav-dropdown::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: -14px;
    height: 14px;
}
.nav-item.is-open > .nav-dropdown,
.nav-item.has-dropdown:hover > .nav-dropdown {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0);
}
.nav-dropdown a {
    display: flex;
    align-items: center;
    min-height: 40px;
    padding: 0 14px;
    border-radius: 4px;
    color: rgba(255, 255, 255, 0.78);
    font-size: 14px;
    white-space: nowrap;
}
.nav-dropdown a:hover {
    background: rgba(232, 168, 56, 0.12);
    color: var(--amber-bright);
}

.nav-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
    flex-shrink: 0;
    height: 100%;
}
.nav-login {
    display: inline-flex;
    align-items: center;
    height: 40px;
    padding: 0 12px;
    color: rgba(255, 255, 255, 0.72);
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
}
.nav-login:hover { color: #fff; }
.btn-nav {
    min-height: 40px;
    height: 40px;
    padding: 0 16px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.03em;
    border-radius: 3px;
    white-space: nowrap;
}
.btn-nav-ghost {
    background: transparent;
    color: rgba(255, 255, 255, 0.88);
    border: 1px solid rgba(255, 255, 255, 0.28);
}
.btn-nav-ghost:hover {
    border-color: #fff;
    color: #fff;
    background: rgba(255, 255, 255, 0.06);
    transform: none;
    box-shadow: none;
}
.btn-nav-primary {
    background: linear-gradient(135deg, var(--amber-bright), var(--amber));
    color: var(--ink);
    border: 1px solid transparent;
}
.btn-nav-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 16px var(--glow-amber);
}

.nav-mobile-cta { display: none; }

.nav-toggle {
    display: none;
    width: 40px;
    height: 40px;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.22);
    border-radius: 4px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    cursor: pointer;
    justify-self: end;
}
.nav-toggle span {
    display: block;
    width: 16px;
    height: 1.5px;
    background: #fff;
    transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(6.5px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-6.5px) rotate(-45deg);
}

.hero-section {
    position: relative;
    min-height: 100vh;
    padding: calc(var(--header-h) + 48px) 24px 80px;
    background: var(--ink);
    color: #fff;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.bg-grid {
    position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(232, 168, 56, 0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(232, 168, 56, 0.06) 1px, transparent 1px);
    background-size: 56px 56px;
    mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%);
}
.bg-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
}
.glow-1 { width: 420px; height: 420px; background: var(--glow-amber); top: 10%; left: 15%; }
.glow-2 { width: 380px; height: 380px; background: var(--glow-teal); bottom: 15%; right: 10%; }
.hero-blueprint {
    position: absolute;
    right: 8%;
    top: 22%;
    width: min(380px, 40vw);
    height: min(380px, 40vw);
    border: 1px solid rgba(232, 168, 56, 0.25);
    border-radius: 50%;
    opacity: 0.5;
}
.hero-blueprint::before,
.hero-blueprint::after {
    content: "";
    position: absolute;
    inset: 12%;
    border: 1px dashed rgba(61, 184, 168, 0.35);
    border-radius: 50%;
}
.hero-blueprint::after { inset: 28%; border-style: solid; }

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 820px;
    text-align: center;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 16px;
    border: 1px solid rgba(232, 168, 56, 0.35);
    border-radius: 999px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 24px;
}
.badge-dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--teal-bright);
    box-shadow: 0 0 12px var(--teal-bright);
}
.title-en {
    font-family: var(--font-display);
    letter-spacing: 0.28em;
    font-size: 12px;
    color: var(--amber-bright);
    margin-bottom: 16px;
}
.hero-title { margin-bottom: 28px; }
.title-main {
    display: block;
    font-family: var(--font-display);
    font-weight: 800;
    font-size: clamp(2.4rem, 6vw, 4.2rem);
    line-height: 1.1;
    letter-spacing: -0.02em;
}
.title-sub {
    display: block;
    margin-top: 12px;
    font-size: clamp(1.05rem, 2.2vw, 1.35rem);
    font-weight: 400;
    color: rgba(255, 255, 255, 0.7);
}
.hero-features {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-bottom: 20px;
}
.feature-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius);
    font-size: 13px;
}
.tag-icon {
    width: 8px; height: 8px;
    background: var(--amber-bright);
    transform: rotate(45deg);
}
.hero-desc {
    color: rgba(255, 255, 255, 0.5);
    font-size: 14px;
    letter-spacing: 0.12em;
    margin-bottom: 32px;
}
.hero-buttons { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.hero-section .btn-outline { color: #fff; border-color: rgba(255, 255, 255, 0.4); }
.hero-section .btn-outline:hover { background: #fff; color: var(--ink); }

.hero-stats {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
    max-width: 900px;
    width: 100%;
    margin-top: 64px;
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}
.hero-stat { text-align: center; }
.stat-num {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    font-weight: 700;
    color: var(--amber-bright);
    display: inline;
}
.stat-suffix { display: inline; color: var(--amber-bright); font-family: var(--font-display); font-size: 1.4rem; }
.stat-label { margin-top: 6px; font-size: 13px; color: rgba(255, 255, 255, 0.55); }

.section-tag {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-display);
    font-size: 12px;
    letter-spacing: 0.2em;
    color: var(--amber);
    margin-bottom: 12px;
}
.section-tag.center { justify-content: center; }
.tag-line { flex: 0 0 32px; height: 1px; background: var(--amber); }
.tag-num { font-weight: 700; }
.section-title {
    font-family: var(--font-display);
    font-size: clamp(1.75rem, 3vw, 2.4rem);
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: -0.02em;
}
.section-title.center,
.section-desc { text-align: center; }
.section-subtitle { color: var(--text-soft); font-weight: 400; font-size: 1rem; }
.section-desc { color: var(--text-soft); margin-bottom: 36px; }

.download-section,
.products-section,
.library-section,
.about-section,
.cases-section,
.news-section,
.su-page {
    padding: 88px 24px;
}
.download-container,
.products-header,
.library-container,
.about-container,
.cases-container,
.news-container,
.su-page__inner {
    max-width: 1120px;
    margin: 0 auto;
}

.download-section { background: var(--ink-2); color: #fff; }
.download-section .section-desc { color: rgba(255, 255, 255, 0.6); }
.download-card {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 32px;
    padding: 36px;
    background: var(--ink-3);
    border: 1px solid rgba(232, 168, 56, 0.25);
    border-radius: 8px;
    box-shadow: var(--shadow);
}
.download-card h3 { font-family: var(--font-display); font-size: 1.5rem; margin-bottom: 12px; }
.download-card p { color: rgba(255, 255, 255, 0.7); margin-bottom: 16px; }
.download-meta { color: rgba(255, 255, 255, 0.55); font-size: 14px; }
.download-meta li { margin-bottom: 6px; padding-left: 14px; position: relative; }
.download-meta li::before {
    content: "";
    position: absolute;
    left: 0; top: 0.55em;
    width: 6px; height: 6px;
    background: var(--teal-bright);
}
.download-card__actions { display: flex; flex-direction: column; gap: 12px; justify-content: center; }

.games-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 28px;
}
.game-card {
    background: var(--ink-3);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius);
    padding: 24px;
}
.game-card__tag {
    display: inline-block;
    font-size: 11px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--amber-bright);
    margin-bottom: 10px;
}
.game-card h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    margin-bottom: 8px;
}
.game-card p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 14px;
    font-size: 14px;
}
.game-card .btn { margin-top: 12px; }

.products-section { background: var(--surface); }
.products-header { margin-bottom: 40px; }
.products-container {
    max-width: 1120px;
    margin: 0 auto;
    display: grid;
    gap: 28px;
}
.product-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(12, 15, 20, 0.04);
}
.product-card:nth-child(even) .product-img { order: 2; }
.product-img { position: relative; min-height: 280px; background: var(--ink-2); }
.product-img img { width: 100%; height: 100%; object-fit: cover; min-height: 280px; }
.product-overlay {
    position: absolute; left: 16px; bottom: 16px;
    padding: 6px 12px;
    background: rgba(12, 15, 20, 0.75);
    color: var(--amber-bright);
    font-family: var(--font-display);
    font-size: 11px;
    letter-spacing: 0.15em;
}
.product-info { padding: 36px 32px; }
.product-en { font-size: 12px; letter-spacing: 0.12em; color: var(--teal); margin-bottom: 8px; font-family: var(--font-display); }
.product-title { font-family: var(--font-display); font-size: 1.5rem; margin-bottom: 12px; }
.product-desc { color: var(--text-soft); margin-bottom: 16px; }
.product-features { margin-bottom: 24px; }
.product-features li {
    position: relative;
    padding: 6px 0 6px 18px;
    color: var(--text-soft);
    font-size: 14px;
}
.product-features li::before {
    content: "";
    position: absolute;
    left: 0; top: 0.75em;
    width: 8px; height: 8px;
    border: 2px solid var(--amber);
    transform: rotate(45deg);
}
.product-actions { display: flex; flex-wrap: wrap; gap: 10px; }

.library-section { background: var(--paper); }
.library-sub {
    font-family: var(--font-display);
    font-size: 1.1rem;
    margin: 28px 0 16px;
}
.library-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 16px;
}
.library-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.library-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}
.library-thumb {
    aspect-ratio: 1;
    background: var(--ink-3);
    overflow: hidden;
}
.library-thumb img { width: 100%; height: 100%; object-fit: cover; }
.library-thumb-ph {
    width: 100%; height: 100%;
    display: flex; align-items: center; justify-content: center;
    color: rgba(255, 255, 255, 0.4);
    font-family: var(--font-display);
    letter-spacing: 0.1em;
}
.library-title {
    padding: 10px 12px;
    font-size: 13px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.library-more { margin: 20px 0 8px; text-align: center; }

.about-section { background: var(--ink); color: #fff; }
.about-title { font-family: var(--font-display); font-size: 2rem; text-align: center; }
.about-subtitle { text-align: center; color: rgba(255, 255, 255, 0.55); margin-bottom: 40px; font-weight: 400; }
.about-content {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 40px;
    align-items: start;
}
.about-desc { color: rgba(255, 255, 255, 0.7); margin-bottom: 16px; }
.about-section .btn-outline { color: #fff; border-color: rgba(255, 255, 255, 0.4); margin-top: 8px; }
.feature-block {
    display: flex;
    gap: 16px;
    padding: 20px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.feature-num {
    font-family: var(--font-display);
    color: var(--amber-bright);
    font-size: 1.25rem;
    font-weight: 700;
}
.feature-content h4 { font-family: var(--font-display); margin-bottom: 6px; }
.feature-content p { color: rgba(255, 255, 255, 0.55); font-size: 14px; }

.cases-section { background: var(--surface-2); }
.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}
.case-item {
    display: flex;
    gap: 14px;
    padding: 20px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 8px;
    min-height: 100px;
}
.case-item:hover { border-color: var(--amber); box-shadow: var(--shadow); }
.case-logo {
    width: 48px; height: 48px;
    flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
    background: var(--ink);
    color: var(--amber-bright);
    border-radius: var(--radius);
}
.case-info h4 { font-size: 15px; margin-bottom: 6px; font-family: var(--font-display); }
.case-info p { font-size: 13px; color: var(--text-soft); }

.news-section { background: var(--paper); }
.news-list { display: flex; flex-direction: column; gap: 12px; }
.news-item {
    display: flex;
    gap: 20px;
    padding: 20px 24px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 8px;
}
.news-item:hover { border-color: rgba(212, 146, 42, 0.45); }
.news-date-box {
    flex-shrink: 0;
    width: 64px;
    text-align: center;
    padding: 8px 0;
    background: var(--ink);
    color: #fff;
    border-radius: var(--radius);
}
.news-date-box .day {
    display: block;
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--amber-bright);
    line-height: 1.1;
}
.news-date-box .month { font-size: 11px; color: rgba(255, 255, 255, 0.55); }
.news-content h4 { font-size: 1.05rem; margin-bottom: 6px; }
.news-content h4 a:hover { color: var(--amber); }
.news-content p { color: var(--text-soft); font-size: 14px; margin-bottom: 8px; }
.news-link { color: var(--teal); font-weight: 600; font-size: 14px; }
.news-more { margin-top: 28px; text-align: center; }

.footer {
    background: var(--ink);
    color: rgba(255, 255, 255, 0.75);
    padding: 72px 24px 32px;
}
.footer-container { max-width: 1120px; margin: 0 auto; }
.footer-main {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
    gap: 32px;
    margin-bottom: 40px;
}
.footer .logo-icon { width: 36px; height: 36px; }
.footer .logo-mark { color: var(--amber-bright); }
.footer .logo-name { color: #fff; }
.footer-desc { font-size: 14px; color: rgba(255, 255, 255, 0.55); margin-bottom: 16px; }
.footer-social { display: flex; flex-wrap: wrap; gap: 8px; }
.social-link {
    display: inline-flex;
    align-items: center;
    min-height: 40px;
    padding: 0 14px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius);
    background: transparent;
    color: #fff;
    font-size: 13px;
    cursor: pointer;
    font-family: inherit;
}
.social-link:hover { border-color: var(--amber-bright); color: var(--amber-bright); }
.footer-title {
    font-family: var(--font-display);
    color: #fff;
    margin-bottom: 14px;
    font-size: 15px;
}
.footer-links li,
.footer-info li { margin-bottom: 10px; font-size: 14px; }
.footer-links a:hover { color: var(--amber-bright); }
.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 12px;
    color: rgba(255, 255, 255, 0.4);
    display: flex;
    flex-wrap: wrap;
    gap: 8px 24px;
    justify-content: space-between;
}

.back-to-top {
    position: fixed;
    right: 20px; bottom: 20px;
    width: 44px; height: 44px;
    border: none;
    border-radius: var(--radius);
    background: var(--amber);
    color: var(--ink);
    font-size: 18px;
    cursor: pointer;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
    z-index: 900;
}
.back-to-top.show { opacity: 1; pointer-events: auto; }

.su-toast {
    position: fixed;
    left: 50%;
    bottom: 32px;
    transform: translateX(-50%);
    background: var(--ink);
    color: #fff;
    padding: 12px 20px;
    border-radius: var(--radius);
    border: 1px solid var(--amber);
    z-index: 1100;
    font-size: 14px;
}

.su-page { padding-top: calc(var(--header-h) + 48px); min-height: 60vh; }
.su-page__title {
    font-family: var(--font-display);
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    margin-bottom: 28px;
}
.su-page__back { margin-top: 36px; }
.su-page__back a { color: var(--teal); font-weight: 600; }
.su-article__meta { color: var(--text-muted); font-size: 13px; margin-bottom: 8px; }
.su-article__lead { font-size: 1.1rem; color: var(--text-soft); margin-bottom: 24px; }
.su-article__cover { width: 100%; max-height: 420px; object-fit: cover; border-radius: 8px; margin-bottom: 28px; }
.su-article__body { font-size: 1.02rem; color: var(--text); line-height: 1.8; }
.su-help-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 28px;
}
.su-help-tabs__link {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    padding: 0 16px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    font-size: 14px;
    background: #fff;
}
.su-help-tabs__link.is-active,
.su-help-tabs__link:hover {
    border-color: var(--amber);
    color: var(--amber);
}

.su-demo-gallery {
    margin-top: 40px;
    padding-top: 28px;
    border-top: 1px solid var(--line);
}
.su-demo-gallery__heading {
    font-family: var(--font-display);
    font-size: 1.35rem;
    margin-bottom: 8px;
}
.su-demo-gallery__lead {
    color: var(--text-soft);
    font-size: 14px;
    margin-bottom: 24px;
}
.su-demo-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}
.su-demo-card {
    margin: 0;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 8px;
    overflow: hidden;
}
.su-demo-card__media {
    background: var(--ink);
    line-height: 0;
}
.su-demo-card__media img {
    width: 100%;
    height: auto;
    display: block;
}
.su-demo-card__cap {
    padding: 16px 18px 18px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.su-demo-card__cap strong {
    font-family: var(--font-display);
    font-size: 1.05rem;
}
.su-demo-card__cap span {
    color: var(--text-soft);
    font-size: 14px;
    line-height: 1.55;
}

@media (min-width: 900px) {
    .su-demo-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.fade-in { opacity: 0; transform: translateY(18px); transition: opacity 0.55s ease, transform 0.55s ease; }
.fade-in.visible { opacity: 1; transform: none; }

@media (max-width: 960px) {
    .download-card,
    .games-grid,
    .product-card,
    .about-content,
    .footer-main { grid-template-columns: 1fr; }
    .product-card:nth-child(even) .product-img { order: 0; }
    .cases-grid { grid-template-columns: 1fr 1fr; }
    .hero-stats { grid-template-columns: 1fr 1fr; }
    .hero-blueprint { display: none; }
}

@media (max-width: 1024px) {
    .nav-container {
        grid-template-columns: 1fr auto;
        column-gap: 12px;
        padding: 0 16px;
    }
    .nav-toggle { display: flex; }
    .nav-actions { display: none; }
    .nav-menu {
        display: none;
        position: absolute;
        top: var(--header-h);
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
        background: rgba(18, 22, 30, 0.98);
        padding: 12px 16px 20px;
        border-bottom: 1px solid rgba(232, 168, 56, 0.2);
        box-shadow: 0 18px 36px rgba(0, 0, 0, 0.35);
        max-height: calc(100vh - var(--header-h));
        overflow-y: auto;
    }
    .nav-menu.is-open { display: flex; }
    .nav-list {
        flex-direction: column;
        align-items: stretch;
        gap: 2px;
    }
    .nav-list,
    .nav-list > li,
    .nav-menu {
        height: auto;
    }
    .nav-link {
        height: 48px;
        min-height: 48px;
        padding: 0 14px;
        justify-content: flex-start;
        width: 100%;
    }
    .nav-link::after { display: none; }
    .nav-dropdown {
        position: static;
        transform: none;
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        display: none;
        min-width: 0;
        margin: 0 0 6px;
        padding: 6px 8px;
        box-shadow: none;
        border-color: rgba(255, 255, 255, 0.08);
        background: rgba(255, 255, 255, 0.03);
    }
    .nav-dropdown::before,
    .nav-dropdown::after { display: none; }
    .nav-item.is-open > .nav-dropdown,
    .nav-item.has-dropdown:hover > .nav-dropdown {
        display: block;
        transform: none;
    }
    .nav-mobile-cta {
        display: flex;
        gap: 10px;
        margin-top: 8px;
        padding-top: 12px;
        border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .nav-mobile-cta .btn { flex: 1; }
}

@media (max-width: 768px) {
    .cases-grid { grid-template-columns: 1fr; }
    .news-item { flex-direction: column; gap: 12px; }
    .logo-name { font-size: 14px; }
}

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