/* ============================================================
   FASIV 索耐电子 官网设计系统 v2
   深色高级感 + 红橙主色（取自 FASIV 标识）+ 响应式 + 动效系统
   ============================================================ */

:root {
    --c-bg: #080b11;
    --c-bg-2: #0f141d;
    --c-bg-3: #161d2a;
    --c-line: rgba(255, 255, 255, 0.09);
    --c-line-light: rgba(10, 13, 18, 0.1);
    --c-text: #eef1f6;
    --c-text-2: #9aa5b4;
    --c-dark-text: #171d26;
    --c-dark-text-2: #5b6675;
    --c-accent: #ff4a22;
    --c-accent-2: #ff7a3c;
    --c-accent-dark: #e23a16;
    --c-blue: #2f6df6;
    --c-light: #ffffff;
    --c-light-bg: #f5f7fa;
    --c-light-bg-2: #eceff4;
    --radius: 16px;
    --radius-sm: 10px;
    --shadow: 0 2px 4px rgba(2, 6, 14, 0.08), 0 24px 48px rgba(2, 6, 14, 0.22);
    --shadow-sm: 0 1px 2px rgba(2, 6, 14, 0.06), 0 10px 24px rgba(2, 6, 14, 0.08);
    --glow: 0 8px 20px rgba(255, 74, 34, 0.22);
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
        "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    --font-mono: ui-monospace, "SF Mono", "Cascadia Mono", "Segoe UI Mono", Consolas, Menlo, monospace;
    --wrap: 1240px;
    --wrap-header: 1420px;
    --header-h: 76px;
    --header-h-sm: 64px;
    --ease: cubic-bezier(0.22, 0.61, 0.21, 1);
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; scrollbar-width: thin; scrollbar-color: #2c3543 transparent; }
body {
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.7;
    color: var(--c-dark-text);
    background: var(--c-light);
    overflow-x: hidden;
}
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #2c3543; border-radius: 8px; border: 2px solid transparent; background-clip: content-box; }
::-webkit-scrollbar-thumb:hover { background-color: #3d4958; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color 0.25s, opacity 0.25s; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: 0; background: none; color: inherit; }
input, textarea, select { font-family: inherit; font-size: 1rem; }
table { border-collapse: collapse; width: 100%; }
::selection { background: var(--c-accent); color: #fff; }
:focus-visible { outline: 2px solid var(--c-accent); outline-offset: 3px; border-radius: 4px; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.wrap-narrow { max-width: 860px; }
.empty { padding: 48px 0; text-align: center; color: var(--c-dark-text-2); }
.empty.light { color: var(--c-text-2); }

/* ---------------- 按钮 ---------------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 13px 26px;
    border-radius: 10px;
    font-size: 0.95rem;
    font-weight: 600;
    line-height: 1.4;
    transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), background 0.25s, color 0.25s, border-color 0.25s;
    white-space: nowrap;
}
.btn i { font-style: normal; transition: transform 0.25s var(--ease); }
.btn:hover i { transform: translateX(4px); }
.btn:active { transform: scale(0.98); }
.btn-accent { background: var(--c-accent); color: #fff; }
.btn-accent:hover { background: var(--c-accent-dark); transform: translateY(-2px); box-shadow: var(--glow); }
.btn-ghost { border: 1px solid rgba(255, 255, 255, 0.28); color: #fff; background: transparent; }
.btn-ghost:hover { background: rgba(255, 255, 255, 0.08); border-color: rgba(255, 255, 255, 0.6); transform: translateY(-2px); }
.btn-ghost-dark { border: 1px solid var(--c-line-light); color: var(--c-dark-text); }
.btn-ghost-dark:hover { border-color: var(--c-dark-text); background: var(--c-dark-text); color: #fff; }
.btn-outline { border: 1px solid var(--c-dark-text); color: var(--c-dark-text); }
.btn-outline:hover { background: var(--c-dark-text); color: #fff; transform: translateY(-2px); }
.btn-outline-light { border: 1px solid rgba(255, 255, 255, 0.35); color: #fff; }
.btn-outline-light:hover { background: #fff; color: var(--c-dark-text); transform: translateY(-2px); }
.btn-lg { padding: 16px 32px; font-size: 1.02rem; }
.btn-sm { padding: 9px 18px; font-size: 0.88rem; border-radius: 8px; }

/* ---------------- 头部 ---------------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.86);
    backdrop-filter: blur(16px) saturate(1.5);
    -webkit-backdrop-filter: blur(16px) saturate(1.5);
    border-bottom: 1px solid rgba(10, 13, 18, 0.07);
    transition: box-shadow 0.3s, background 0.3s;
}
.site-header.scrolled {
    box-shadow: 0 10px 30px rgba(10, 13, 18, 0.1);
    background: rgba(255, 255, 255, 0.94);
}
.site-header .wrap { max-width: var(--wrap-header); }
.header-inner {
    display: flex;
    align-items: center;
    gap: 24px;
    height: var(--header-h);
    transition: height 0.3s var(--ease);
}
.site-header.scrolled .header-inner { height: var(--header-h-sm); }
.logo { flex-shrink: 0; display: flex; align-items: center; }
.logo img { height: 38px; width: auto; transition: height 0.3s var(--ease); }
.site-header.scrolled .logo img { height: 32px; }

.main-nav { flex: 1; min-width: 0; }
.menu { display: flex; justify-content: center; gap: 4px; }
.menu > li { position: relative; flex-shrink: 0; }
.menu > li > a {
    position: relative;
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 10px 18px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--c-dark-text);
    border-radius: 10px;
    white-space: nowrap;
    transition: color 0.25s;
}
.menu > li > a::after {
    content: "";
    position: absolute;
    left: 18px; right: 18px; bottom: 2px;
    height: 2px;
    border-radius: 2px;
    background: var(--c-accent);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform 0.3s var(--ease);
}
.menu > li > a:hover { color: var(--c-accent); }
.menu > li > a:hover::after,
.menu > li.active > a::after { transform: scaleX(1); }
.menu > li.active > a { color: var(--c-accent); }
.caret {
    width: 7px; height: 7px;
    border-right: 1.6px solid currentColor;
    border-bottom: 1.6px solid currentColor;
    transform: rotate(45deg) translateY(-2px);
    opacity: 0.55;
    transition: transform 0.25s var(--ease);
    margin-top: -4px;
}
.menu > li:hover .caret { transform: rotate(225deg) translateY(-1px); }

.submenu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translate(-50%, 14px) scale(0.97);
    transform-origin: top center;
    min-width: 560px;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    border: 1px solid var(--c-line-light);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.28s var(--ease), transform 0.28s var(--ease), visibility 0.28s;
    pointer-events: none;
}
.submenu::before {
    content: "";
    position: absolute;
    top: -6px; left: 50%;
    width: 12px; height: 12px;
    background: #fff;
    transform: translateX(-50%) rotate(45deg);
    border-radius: 2px;
}
.submenu::after {
    content: "";
    position: absolute;
    top: -12px; left: 0; right: 0;
    height: 12px;
}
.menu > li:hover .submenu,
.menu > li:focus-within .submenu { opacity: 1; visibility: visible; transform: translate(-50%, 8px) scale(1); pointer-events: auto; }
.submenu-grid { display: flex; gap: 28px; padding: 26px 28px; align-items: center; }
.submenu-links { flex: 1; display: grid; grid-template-columns: 1fr 1fr; gap: 4px 18px; }
.submenu-title {
    grid-column: 1 / -1;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    color: var(--c-dark-text-2);
    text-transform: uppercase;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--c-line-light);
    margin-bottom: 6px;
}
.submenu-links a {
    display: block;
    padding: 9px 10px;
    border-radius: 8px;
    font-size: 0.95rem;
    color: var(--c-dark-text);
    white-space: nowrap;
    transition: background 0.2s, color 0.2s, padding-left 0.2s;
}
.submenu-links a:hover { background: var(--c-light-bg); color: var(--c-accent); padding-left: 16px; }
.submenu-pic { width: 220px; flex-shrink: 0; border-radius: var(--radius-sm); overflow: hidden; }
.submenu-pic img { width: 100%; aspect-ratio: 2 / 1; object-fit: cover; transition: transform 0.5s var(--ease); }
.menu > li:hover .submenu-pic img { transform: scale(1.06); }

.header-tools { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px; height: 40px;
    border-radius: 50%;
    transition: background 0.2s, transform 0.2s;
}
.icon-btn:hover { background: var(--c-light-bg); transform: scale(1.06); }
.icon-btn:active { transform: scale(0.94); }
.icon-btn svg { width: 20px; height: 20px; fill: var(--c-dark-text); }

.shop-wrap { position: relative; }
.shop-toggle {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 9px 16px;
    border-radius: 10px;
    font-size: 0.9rem;
    font-weight: 600;
    color: #fff;
    background: var(--c-dark-text);
    white-space: nowrap;
    transition: background 0.25s, transform 0.25s;
}
.shop-toggle:hover { background: var(--c-accent); transform: translateY(-1px); }
.shop-toggle svg { width: 16px; height: 16px; fill: currentColor; }
.shop-pop {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    display: flex;
    flex-direction: column;
    min-width: 148px;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    border: 1px solid var(--c-line-light);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow);
    padding: 6px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: opacity 0.25s var(--ease), transform 0.25s var(--ease), visibility 0.25s;
}
.shop-wrap:hover .shop-pop, .shop-wrap:focus-within .shop-pop { opacity: 1; visibility: visible; transform: translateY(0); }
.shop-pop a { padding: 9px 14px; border-radius: 8px; font-size: 0.9rem; color: var(--c-dark-text); white-space: nowrap; }
.shop-pop a:hover { background: var(--c-light-bg); color: var(--c-accent); }

.lang-toggle {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border-radius: 10px;
    border: 1px solid var(--c-line-light);
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--c-dark-text);
    transition: color 0.25s, border-color 0.25s, transform 0.25s;
}
.lang-toggle:hover { border-color: var(--c-accent); color: var(--c-accent); transform: translateY(-1px); }
.lang-toggle svg { width: 16px; height: 16px; fill: currentColor; }

.nav-toggle { display: none; flex-direction: column; justify-content: center; gap: 5px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--c-dark-text); border-radius: 2px; transition: all 0.3s var(--ease); }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 搜索条 */
.search-bar {
    border-top: 1px solid rgba(10, 13, 18, 0.07);
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(10px);
    animation: searchIn 0.3s var(--ease);
}
@keyframes searchIn { from { opacity: 0; transform: translateY(-8px); } }
.search-form { display: flex; align-items: center; gap: 12px; padding-top: 14px; padding-bottom: 14px; }
.search-form svg { width: 20px; height: 20px; fill: var(--c-dark-text-2); flex-shrink: 0; }
.search-form input { flex: 1; border: 0; outline: none; font-size: 1.05rem; color: var(--c-dark-text); background: transparent; }
.search-form button {
    background: var(--c-accent);
    color: #fff;
    padding: 10px 22px;
    border-radius: 8px;
    font-weight: 600;
    transition: background 0.25s, transform 0.25s;
}
.search-form button:hover { background: var(--c-accent-dark); transform: translateY(-1px); }

/* 首页叠加导航：顶部透明融入 Hero，滚动后化为深色玻璃 */
.site-header.is-overlay {
    position: fixed;
    top: 0; left: 0; right: 0;
    background: transparent;
    border-bottom-color: transparent;
}
.site-header.is-overlay.scrolled {
    background: rgba(8, 11, 17, 0.78);
    -webkit-backdrop-filter: blur(18px) saturate(1.4);
    backdrop-filter: blur(18px) saturate(1.4);
    border-bottom-color: var(--c-line);
    box-shadow: none;
}
.site-header.is-overlay .menu > li > a { color: rgba(255, 255, 255, 0.92); }
.site-header.is-overlay .menu > li > a:hover { color: var(--c-accent-2); }
.site-header.is-overlay .menu > li.active > a { color: var(--c-accent-2); }
.site-header.is-overlay .icon-btn svg { fill: #fff; }
.site-header.is-overlay .icon-btn:hover { background: rgba(255, 255, 255, 0.12); }
.site-header.is-overlay .lang-toggle { color: #fff; border-color: rgba(255, 255, 255, 0.32); }
.site-header.is-overlay .lang-toggle:hover { border-color: var(--c-accent-2); color: var(--c-accent-2); }
.site-header.is-overlay .shop-toggle { background: transparent; border: 1px solid rgba(255, 255, 255, 0.35); }
.site-header.is-overlay .shop-toggle:hover { background: var(--c-accent); border-color: var(--c-accent); }
.site-header.is-overlay .nav-toggle span { background: #fff; }
.site-header.is-overlay .search-bar {
    background: rgba(8, 11, 17, 0.92);
    border-top-color: var(--c-line);
}
.site-header.is-overlay .search-form svg { fill: var(--c-text-2); }
.site-header.is-overlay .search-form input { color: #fff; }

/* 移动端抽屉 */
.m-nav {
    position: fixed;
    top: 0; right: 0;
    width: min(320px, 86vw);
    height: 100vh;
    height: 100dvh;
    background: var(--c-bg-2);
    color: var(--c-text);
    z-index: 120;
    padding: 84px 22px 28px;
    transform: translateX(100%);
    transition: transform 0.35s var(--ease);
    overflow-y: auto;
}
.m-nav.open { transform: translateX(0); }
.m-nav details { border-bottom: 1px solid var(--c-line); }
.m-nav summary { list-style: none; display: flex; align-items: center; justify-content: space-between; padding: 15px 2px; font-weight: 600; cursor: pointer; }
.m-nav summary::-webkit-details-marker { display: none; }
.m-nav summary a { flex: 1; color: var(--c-text); }
.m-nav summary i {
    width: 8px; height: 8px;
    border-right: 2px solid var(--c-text-2);
    border-bottom: 2px solid var(--c-text-2);
    transform: rotate(45deg);
    transition: transform 0.3s var(--ease);
}
.m-nav details[open] summary i { transform: rotate(225deg); }
.m-nav details ul { padding: 0 2px 12px; animation: mSubIn 0.3s var(--ease); }
@keyframes mSubIn { from { opacity: 0; transform: translateY(-6px); } }
.m-nav details ul a { display: block; padding: 9px 12px; color: var(--c-text-2); border-radius: 8px; }
.m-nav details ul a:hover { color: #fff; background: var(--c-bg-3); }
.m-nav > ul > li > a { display: block; padding: 15px 2px; font-weight: 600; color: var(--c-text); border-bottom: 1px solid var(--c-line); }
.m-nav-foot { display: flex; gap: 12px; margin-top: 22px; }
.m-nav-foot .btn { flex: 1; justify-content: center; }
.m-nav .btn-outline { border-color: var(--c-line); color: var(--c-text); }
.m-nav .btn-accent { box-shadow: none; }
.mask {
    position: fixed; inset: 0;
    background: rgba(4, 7, 12, 0.6);
    backdrop-filter: blur(2px);
    z-index: 110;
    opacity: 0;
    transition: opacity 0.3s;
}
.mask.show { opacity: 1; }

/* ---------------- 首页沉浸式 Hero（舞台） ---------------- */
.hero {
    position: relative;
    min-height: 100vh;
    min-height: 100svh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    background: var(--c-bg);
    color: var(--c-text);
    overflow: hidden;
}
/* 影棚式布光：顶部冷白主灯 + 产品位一抹暖色轮廓光 + 边缘暗角，随滚动缓慢位移 */
.hero-ambient { position: absolute; inset: -14% 0; pointer-events: none; will-change: transform; }
.hero-ambient::before {
    content: "";
    position: absolute; inset: 0;
    background:
        radial-gradient(120% 82% at 50% -8%, rgba(56, 68, 86, 0.5), transparent 62%),
        radial-gradient(46% 30% at 72% 62%, rgba(255, 74, 34, 0.09), transparent 70%),
        radial-gradient(140% 120% at 50% 46%, transparent 58%, rgba(2, 4, 8, 0.55) 100%);
}
/* 幻灯片：交叉淡入 */
.hero-stage { position: absolute; inset: 0; }
.hero-slide {
    position: absolute; inset: 0;
    opacity: 0;
    visibility: hidden;
    transition: opacity 1.15s var(--ease-out), visibility 1.15s;
}
.hero-slide.is-on { opacity: 1; visibility: visible; }
/* 无 JS 时仅展示第一帧，避免绝对定位幻灯互相叠压 */
.hero:not(.has-js) .hero-slide:not(:first-child) { visibility: hidden; }
.hero-inner {
    position: relative;
    height: 100%;
    display: grid;
    grid-template-columns: 1.16fr 0.84fr;
    align-items: end;
    gap: 40px;
    padding-top: calc(var(--header-h) + 12px);
    padding-bottom: 128px;
    will-change: transform, opacity;
}
/* 文字：遮罩行进场（JS 就绪后启用） */
.hero.has-js .hl { display: block; overflow: hidden; }
.hero.has-js .hl-in { display: block; }
.hero.has-js .hero-slide:not(.is-on) .hl-in { transform: translateY(112%); opacity: 0; }
.hero.has-js .hero-slide.is-on .hl-in {
    transform: translateY(0);
    opacity: 1;
    transition:
        transform 0.95s var(--ease-out) calc(var(--hl-i, 0) * 95ms),
        opacity 0.65s ease calc(var(--hl-i, 0) * 95ms);
}
.hero-kicker {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--c-text-2);
    margin-bottom: 26px;
}
/* 红方块标记：JS 模式挂在遮罩内层随文字进场；无 JS 时直接挂在段前 */
.hero.has-js .hero-kicker .hl-in::before {
    content: "";
    display: inline-block;
    width: 9px; height: 9px;
    background: var(--c-accent);
    margin-right: 12px;
}
.hero:not(.has-js) .hero-kicker::before {
    content: "";
    display: inline-block;
    width: 9px; height: 9px;
    background: var(--c-accent);
    margin-right: 12px;
}
.hero.has-js .hero-kicker .hl-in { display: flex; align-items: center; }
.hero-title {
    font-size: clamp(2.6rem, 5.4vw, 4.8rem);
    font-weight: 800;
    line-height: 1.06;
    letter-spacing: -0.015em;
    margin-bottom: 24px;
}
.hero-sub {
    font-size: clamp(1rem, 1.5vw, 1.22rem);
    color: var(--c-text-2);
    max-width: 30em;
    margin-bottom: 38px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
/* 产品悬浮体：进场缓推 + 呼吸悬浮 + 鼠标倾斜（JS）；右缘出血增强张力 */
.hero-visual { position: relative; margin: 0 0 40px; align-self: center; }
.hero-tilt { will-change: transform; transform: perspective(1100px); }
.hero-tilt img {
    width: 112%;
    max-width: none;
    max-height: 62vh;
    object-fit: contain;
    filter: drop-shadow(0 48px 64px rgba(0, 0, 0, 0.6));
    opacity: 0;
    transform: scale(1.06) translateY(16px);
    transition: opacity 0.9s ease, transform 1.5s var(--ease-out);
}
.hero-slide.is-on .hero-tilt img {
    opacity: 1;
    transform: scale(1) translateY(0);
    animation: heroFloat 7s ease-in-out 1.6s infinite;
}
@keyframes heroFloat {
    0%, 100% { transform: scale(1) translateY(0); }
    50% { transform: scale(1) translateY(-13px); }
}
/* 频谱仪：细条均布，随滚动速度起伏（--eq-amp 由 JS lerp） */
.hero-eq {
    position: absolute;
    left: 0; right: 0; bottom: 0;
    height: 56px;
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 0;
    padding: 0 32px;
    opacity: 0.3;
    pointer-events: none;
    transform: scaleY(var(--eq-amp, 1));
    transform-origin: bottom;
    will-change: transform;
}
.hero-eq i {
    flex: 0 0 3px;
    min-height: 4px;
    background: linear-gradient(to top, rgba(255, 74, 34, 0.55), rgba(255, 122, 60, 0.06));
    border-radius: 1.5px 1.5px 0 0;
    animation: eq 1.9s ease-in-out infinite;
    transform-origin: bottom;
}
.hero-eq i:nth-child(2n) { animation-duration: 2.3s; animation-delay: 0.15s; }
.hero-eq i:nth-child(3n) { animation-duration: 1.4s; animation-delay: 0.35s; }
.hero-eq i:nth-child(5n) { animation-duration: 2.8s; animation-delay: 0.1s; }
@keyframes eq {
    0%, 100% { height: 10%; opacity: 0.5; }
    50% { height: 92%; opacity: 1; }
}
/* 导航（与内容左缘对齐）+ 进度圆点 + 下探按钮 */
.hero-nav {
    position: absolute;
    left: max(24px, calc((100% - var(--wrap)) / 2 + 24px));
    bottom: 52px;
    display: flex;
    align-items: center;
    gap: 18px;
    z-index: 5;
}
/* 滚动提示：竖排文字 + 右侧等高落线，居中于首屏底部 */
.hero-cue {
    position: absolute;
    left: 50%;
    bottom: 26px;
    transform: translateX(-50%);
    z-index: 6;
    display: flex;
    align-items: stretch;
    gap: 12px;
    transition: color 0.3s;
}
.hero-cue:hover { color: #fff; }
.hero-cue-txt {
    writing-mode: vertical-rl;
    font-family: var(--font-mono);
    font-size: 0.66rem;
    letter-spacing: 0.3em;
    color: var(--c-text-2);
    text-transform: uppercase;
}
.hero-cue-line { position: relative; width: 1px; background: rgba(255, 255, 255, 0.16); overflow: hidden; }
.hero-cue-line::after {
    content: "";
    position: absolute;
    left: 0; top: -45%;
    width: 100%; height: 45%;
    background: var(--c-accent);
    animation: cueDrop 2.2s var(--ease) infinite;
}
@keyframes cueDrop { to { top: 115%; } }
.hero-btn {
    width: 42px; height: 42px;
    border-radius: 50%;
    border: 1px solid var(--c-line);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: background 0.25s, border-color 0.25s, transform 0.25s;
}
.hero-btn svg { width: 18px; height: 18px; fill: var(--c-text); }
.hero-btn:hover { background: rgba(255, 255, 255, 0.1); border-color: rgba(255, 255, 255, 0.4); transform: scale(1.08); }
.hero-btn:active { transform: scale(0.94); }
.hero-dots { display: flex; gap: 10px; }
.hero-dots button {
    position: relative;
    width: 34px; height: 4px;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.2);
    overflow: hidden;
    transition: background 0.25s, transform 0.25s;
}
.hero-dots button:hover { background: rgba(255, 255, 255, 0.42); transform: scaleY(1.4); }
.hero-dots button.on { background: rgba(255, 255, 255, 0.26); }
.hero-dots button.on::after {
    content: "";
    position: absolute; inset: 0;
    background: var(--c-accent);
    transform: scaleX(0);
    transform-origin: left;
}
.hero-dots.running button.on::after { animation: dotFill var(--hero-interval, 7000ms) linear forwards; }
@keyframes dotFill { to { transform: scaleX(1); } }

/* ---------------- 区块通用 ---------------- */
.sec { padding: clamp(72px, 9vw, 116px) 0; }
.sec-tight { padding: 64px 0; }
#main { counter-reset: sec-index; }
.sec { counter-increment: sec-index; }
.sec-light { background: var(--c-light); }
.sec-light:nth-of-type(even) { background: var(--c-light-bg); }
.sec-dark { background: var(--c-bg); color: var(--c-text); }
.sec-dots {
    background-image: radial-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1.4px);
    background-size: 26px 26px;
}
.sec-dark .sec-sub { color: var(--c-text-2); }
.sec-head {
    text-align: left;
    max-width: 780px;
    margin: 0 0 52px;
    padding-top: 28px;
    border-top: 1px solid var(--c-line-light);
}
.sec-head-row {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    text-align: left;
    max-width: none;
    gap: 24px;
    padding-top: 28px;
    border-top: 1px solid var(--c-line-light);
}
.sec-head-row > div { max-width: 640px; }
.sec-dark .sec-head, .sec-dark .sec-head-row { border-top-color: var(--c-line); }
.sec-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    color: var(--c-accent);
    text-transform: uppercase;
    margin-bottom: 14px;
}
.sec-eyebrow::before {
    content: counter(sec-index, decimal-leading-zero);
    color: var(--c-dark-text-2);
}
.sec-dark .sec-eyebrow::before { color: var(--c-text-2); }
.sec-title {
    font-size: clamp(1.8rem, 3.2vw, 2.7rem);
    font-weight: 800;
    line-height: 1.18;
    letter-spacing: -0.01em;
    color: var(--c-dark-text);
    margin-bottom: 12px;
}
.sec-dark .sec-title { color: var(--c-text); }
.sec-sub { color: var(--c-dark-text-2); font-size: 1.02rem; }

/* 场景：悬浮白卡 + 原版线条图标 + 中线划入（对标原站 scene bar）*/
.scene-list {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    background: #fff;
    border: 1px solid var(--c-line-light);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    margin-bottom: 26px;
}
.scene-list li { border-left: 1px solid var(--c-line-light); }
.scene-list li:first-child { border-left: 0; }
.scene-list a {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    min-height: 112px;
    padding: 26px 18px;
    transition: background 0.25s;
}
.scene-list a:hover { background: #fff; }
.scene-list a::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 0;
    width: 0;
    height: 2px;
    background: var(--c-accent);
    transform: translateX(-50%);
    transition: width 0.35s var(--ease);
}
.scene-list a:hover::after { width: 62%; }
.scene-icon {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
    background: var(--c-accent);
    -webkit-mask: var(--scene-icon) center / contain no-repeat;
    mask: var(--scene-icon) center / contain no-repeat;
    transition: transform 0.35s var(--ease-spring);
}
.scene-list a:hover .scene-icon { transform: translateY(-4px) scale(1.08); }
.scene-name { font-weight: 700; font-size: 1.05rem; }
.scene-go {
    font-size: 1rem;
    color: var(--c-accent);
    opacity: 0;
    transform: translateX(-8px);
    transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
}
.scene-list a:hover .scene-go { opacity: 1; transform: translateX(0); }

/* 场景照片墙：左双右长的非对称拼贴（对标原站 photo）*/
.scene-photo {
    display: grid;
    grid-template-columns: 1.45fr 1fr;
    gap: 26px;
    margin-bottom: 72px;
}
.sp-col { display: grid; grid-template-rows: 1fr 1fr; gap: 26px; }
.sp-item {
    position: relative;
    display: block;
    overflow: hidden;
    border-radius: var(--radius-sm);
    background: var(--c-bg-2);
    box-shadow: var(--shadow-sm);
    transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
}
.sp-col .sp-item { aspect-ratio: 2 / 1; }
.sp-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.65s var(--ease);
}
.sp-item:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.sp-item:hover img { transform: scale(1.045); }
.sp-more {
    position: absolute;
    right: 16px;
    bottom: 16px;
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 9px 16px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.94);
    color: var(--c-dark-text);
    font-size: 0.84rem;
    font-weight: 700;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
}
.sp-more i { font-style: normal; color: var(--c-accent); transition: transform 0.25s var(--ease); }
.sp-item:hover .sp-more { opacity: 1; transform: none; }
.sp-item:hover .sp-more i { transform: translateX(3px); }
@media (hover: none) {
    .sp-more { opacity: 1; transform: none; }
}

/* 数据 */
.stat-list {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
    text-align: left;
    padding-top: 40px;
    border-top: 1px solid var(--c-line-light);
}
.stat-list li { padding-left: 24px; border-left: 1px solid var(--c-line-light); }
.stat-list li:first-child { padding-left: 0; border-left: 0; }
.sec-dark .stat-list li { border-left-color: var(--c-line); }
.stat-list strong {
    display: block;
    font-family: var(--font-mono);
    font-size: clamp(1.9rem, 3.2vw, 2.8rem);
    font-weight: 700;
    color: var(--c-dark-text);
    letter-spacing: -0.02em;
    line-height: 1.2;
}
.stat-list strong span { color: var(--c-accent); font-size: 0.6em; margin-left: 2px; }
.stat-list p { color: var(--c-dark-text-2); font-size: 0.92rem; margin-top: 8px; }

/* ---------------- 产品卡片 ---------------- */
.p-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; counter-reset: p-idx; }
.p-card {
    display: flex;
    flex-direction: column;
    background: var(--c-bg-2);
    border: 1px solid var(--c-line);
    border-radius: var(--radius);
    overflow: hidden;
    color: var(--c-text);
    transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s;
}
.p-card:hover { transform: translateY(-7px); box-shadow: var(--shadow), 0 10px 34px rgba(255, 74, 34, 0.1); border-color: rgba(255, 74, 34, 0.5); }
.p-card figure {
    position: relative;
    background: #000;
    overflow: hidden;
}
.p-card figure::after {
    counter-increment: p-idx;
    content: counter(p-idx, decimal-leading-zero);
    position: absolute;
    top: 14px;
    right: 14px;
    font-family: var(--font-mono);
    font-size: 0.74rem;
    letter-spacing: 0.1em;
    color: rgba(255, 255, 255, 0.9);
    background: rgba(8, 11, 17, 0.55);
    border: 1px solid rgba(255, 255, 255, 0.16);
    padding: 4px 9px;
    border-radius: 7px;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}
.p-card figure img {
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    transition: transform 0.5s var(--ease);
}
.p-card:hover figure img { transform: scale(1.05); }
.p-body { display: flex; flex-direction: column; gap: 8px; padding: 22px 24px 24px; flex: 1; }
.p-body h3 { font-size: 1.12rem; font-weight: 700; line-height: 1.4; }
.p-body p { color: var(--c-text-2); font-size: 0.9rem; line-height: 1.65; flex: 1; }
.p-more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    color: var(--c-accent-2);
    margin-top: 6px;
}
.p-more i { font-style: normal; transition: transform 0.25s var(--ease); }
.p-card:hover .p-more i { transform: translateX(5px); }

/* ---------------- 首页产品橱窗：主推大图 + 产品行（首页专属）---------------- */
.pf-grid {
    display: grid;
    grid-template-columns: 1.32fr 1fr;
    gap: 26px;
    align-items: stretch;
}
.pf-col-rows { display: flex; flex-direction: column; gap: 26px; counter-reset: pf-row 1; }
.pf-num {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    color: var(--c-accent-2);
}
.pf-row-num::before {
    content: counter(pf-row, decimal-leading-zero);
    counter-increment: pf-row;
}
.pf-lead {
    position: relative;
    display: block;
    min-height: 440px;
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--c-line);
    background: var(--c-bg-2);
    transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s;
}
.pf-lead:hover { transform: translateY(-6px); border-color: rgba(255, 74, 34, 0.5); box-shadow: var(--shadow), 0 14px 40px rgba(255, 74, 34, 0.12); }
.pf-lead figure { position: absolute; inset: 0; }
.pf-lead figure img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.65s var(--ease); }
.pf-lead:hover figure img { transform: scale(1.05); }
.pf-lead::after {
    content: "";
    position: absolute;
    inset: 38% 0 0;
    background: linear-gradient(180deg, transparent, rgba(8, 11, 17, 0.55) 42%, rgba(8, 11, 17, 0.92));
    pointer-events: none;
}
.pf-lead > .pf-num {
    position: absolute;
    top: 18px;
    right: 18px;
    z-index: 2;
    color: rgba(255, 255, 255, 0.92);
    background: rgba(8, 11, 17, 0.55);
    border: 1px solid rgba(255, 255, 255, 0.16);
    padding: 5px 10px;
    border-radius: 7px;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}
.pf-lead-body {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2;
    padding: 30px 32px;
}
.pf-lead-body h3 { color: #fff; font-size: 1.5rem; font-weight: 800; line-height: 1.35; }
.pf-lead-body p {
    margin-top: 10px;
    color: rgba(255, 255, 255, 0.72);
    font-size: 0.94rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.pf-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 18px;
    padding: 10px 20px;
    border-radius: 999px;
    background: var(--c-accent);
    color: #fff;
    font-size: 0.88rem;
    font-weight: 700;
    transition: background 0.25s, transform 0.25s var(--ease);
}
.pf-cta i { font-style: normal; transition: transform 0.25s var(--ease); }
.pf-lead:hover .pf-cta { background: var(--c-accent-dark); }
.pf-lead:hover .pf-cta i { transform: translateX(4px); }
.pf-row {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px 22px;
    border: 1px solid var(--c-line);
    border-radius: var(--radius);
    background: linear-gradient(160deg, var(--c-bg-2), var(--c-bg-3));
    transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s;
}
.pf-row:hover { transform: translateY(-5px); border-color: rgba(255, 122, 60, 0.5); box-shadow: var(--shadow); }
.pf-row figure {
    width: 128px;
    aspect-ratio: 1;
    flex-shrink: 0;
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: #000;
}
.pf-row figure img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s var(--ease); }
.pf-row:hover figure img { transform: scale(1.07); }
.pf-row-txt { min-width: 0; }
.pf-row-txt .pf-num { display: block; margin-bottom: 7px; }
.pf-row-txt h3 { color: var(--c-text); font-size: 1.06rem; font-weight: 700; line-height: 1.45; }
.pf-row-txt p {
    margin-top: 6px;
    color: var(--c-text-2);
    font-size: 0.88rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.pf-row-go {
    margin-left: auto;
    flex-shrink: 0;
    color: var(--c-accent-2);
    font-size: 1.15rem;
    opacity: 0;
    transform: translateX(-8px);
    transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
}
.pf-row:hover .pf-row-go { opacity: 1; transform: none; }

/* ---------------- 产品优点：视差底纹 + 连体细线网格（对标原站 merit）---------------- */
.sec.sec-merit {
    background: #f7f8fa url("/assets/site/img/home-merit.jpg") center / cover no-repeat fixed;
}
.merit-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    border-top: 1px solid var(--c-line-light);
    border-left: 1px solid var(--c-line-light);
    counter-reset: merit;
}
.merit-list li {
    counter-increment: merit;
    position: relative;
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 32px 36px;
    background: rgba(255, 255, 255, 0.55);
    border-right: 1px solid var(--c-line-light);
    border-bottom: 1px solid var(--c-line-light);
    transition: background 0.3s var(--ease), box-shadow 0.3s var(--ease), transform 0.3s var(--ease);
}
.merit-list li:hover {
    background: #fff;
    box-shadow: 0 18px 44px rgba(2, 6, 14, 0.12);
    transform: translateY(-3px);
    z-index: 1;
}
.merit-list li::before {
    content: counter(merit, decimal-leading-zero);
    position: absolute;
    top: 16px;
    right: 20px;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    letter-spacing: 0.1em;
    color: rgba(91, 102, 117, 0.5);
}
.merit-ico {
    position: relative;
    display: grid;
    place-items: center;
    width: 76px;
    height: 76px;
    flex-shrink: 0;
    background: #fff;
    border: 1px solid var(--c-line-light);
    border-radius: 16px;
    box-shadow: 0 6px 18px rgba(2, 6, 14, 0.07);
    transition: transform 0.35s var(--ease-spring), box-shadow 0.3s;
}
.merit-ico::before {
    content: "";
    width: 44px;
    height: 44px;
    background: var(--c-accent);
    -webkit-mask: var(--merit-icon) center / contain no-repeat;
    mask: var(--merit-icon) center / contain no-repeat;
}
.merit-list li:hover .merit-ico { transform: translateY(-3px) scale(1.05); box-shadow: var(--glow); }
.merit-txt h3 {
    font-size: 1.1rem;
    font-weight: 800;
    margin-bottom: 6px;
    color: var(--c-dark-text);
}
.merit-txt p { color: var(--c-dark-text-2); font-size: 0.93rem; line-height: 1.65; }

/* ---------------- 视频 / 服务 ---------------- */
.media-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.video-card {
    position: relative;
    text-align: left;
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--c-line);
    background: var(--c-bg-2);
    transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s;
    display: flex;
    flex-direction: column;
}
.video-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: rgba(255, 122, 60, 0.5); }
.video-card figure { position: relative; overflow: hidden; }
.video-card figure img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; transition: transform 0.5s var(--ease); }
.video-card:hover figure img { transform: scale(1.05); }
.play-badge {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 64px; height: 64px;
    border-radius: 50%;
    background: rgba(255, 74, 34, 0.92);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 0 10px rgba(255, 74, 34, 0.22);
    transition: transform 0.3s var(--ease), box-shadow 0.3s;
}
.video-card:hover .play-badge { transform: translate(-50%, -50%) scale(1.1); box-shadow: 0 0 0 14px rgba(255, 74, 34, 0.18); }
.play-badge { animation: badgePulse 2.2s var(--ease) infinite; }
.play-badge svg { width: 26px; height: 26px; fill: #fff; margin-left: 3px; }
@keyframes badgePulse {
    0%, 100% { box-shadow: 0 0 0 8px rgba(255, 74, 34, 0.25); }
    50% { box-shadow: 0 0 0 16px rgba(255, 74, 34, 0.06); }
}
.video-name { padding: 16px 20px; font-weight: 700; font-size: 1rem; }
.v-lg figure img { aspect-ratio: 16 / 9; }

.service-card {
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding: 34px 30px;
    border-radius: var(--radius);
    border: 1px solid var(--c-line);
    background: linear-gradient(160deg, var(--c-bg-2), var(--c-bg-3));
    color: var(--c-text);
    transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s;
}
.service-card:hover { transform: translateY(-6px); border-color: rgba(255, 122, 60, 0.5); box-shadow: var(--shadow); }
.service-ico {
    display: grid;
    place-items: center;
    width: 64px;
    height: 64px;
    flex-shrink: 0;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.045);
    border: 1px solid var(--c-line);
    transition: background 0.3s var(--ease), border-color 0.3s, box-shadow 0.3s, transform 0.35s var(--ease-spring);
}
.service-ico svg { width: 30px; height: 30px; fill: var(--c-accent-2); transition: fill 0.3s; }
.service-card:hover .service-ico {
    background: rgba(255, 74, 34, 0.12);
    border-color: rgba(255, 122, 60, 0.45);
    box-shadow: 0 0 26px rgba(255, 74, 34, 0.16);
    transform: translateY(-4px);
}
.service-card h3 { font-size: 1.2rem; font-weight: 800; }
.service-card p { color: var(--c-text-2); font-size: 0.92rem; }
.v-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }

/* ---------------- 新闻 ---------------- */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.news-card {
    display: flex;
    flex-direction: column;
    background: #fff;
    border: 1px solid var(--c-line-light);
    border-radius: var(--radius);
    overflow: hidden;
    transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-sm); }
.news-card figure { position: relative; overflow: hidden; background: var(--c-bg); }
.news-card figure img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; transition: transform 0.5s var(--ease); }
.news-card:hover figure img { transform: scale(1.05); }
.news-noimg {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    aspect-ratio: 16 / 9;
    background: linear-gradient(135deg, var(--c-bg-2), var(--c-bg-3));
}
.news-noimg i {
    font-style: normal;
    font-weight: 800;
    font-size: 2rem;
    letter-spacing: 0.1em;
    background: linear-gradient(135deg, var(--c-accent), var(--c-accent-2));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    opacity: 0.85;
}
.news-card time {
    position: absolute;
    left: 14px; top: 14px;
    background: var(--c-accent);
    color: #fff;
    font-family: var(--font-mono);
    font-size: 0.74rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    padding: 5px 10px;
    border-radius: 6px;
    box-shadow: 0 6px 16px rgba(255, 74, 34, 0.35);
}
.news-body { display: flex; flex-direction: column; gap: 10px; padding: 22px 24px 24px; flex: 1; }
.news-body h3 {
    font-size: 1.05rem;
    font-weight: 700;
    line-height: 1.5;
    color: var(--c-dark-text);
    transition: color 0.25s var(--ease);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.news-card:hover h3 { color: var(--c-accent); }
.news-body p {
    color: var(--c-dark-text-2);
    font-size: 0.9rem;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.news-more { display: inline-flex; align-items: center; gap: 6px; color: var(--c-accent); font-weight: 700; font-size: 0.85rem; letter-spacing: 0.08em; }
.news-more i { font-style: normal; transition: transform 0.25s var(--ease); }
.news-card:hover .news-more i { transform: translateX(5px); }

/* ---------------- 首页新闻：头条 + 索引行（首页专属报刊式布局）---------------- */
.hn-grid {
    display: grid;
    grid-template-columns: 1.12fr 1fr;
    gap: 26px;
    align-items: stretch;
}
.hn-col-lead { display: flex; min-width: 0; }
.hn-col-rows { display: flex; flex-direction: column; min-width: 0; }
.hn-lead {
    position: relative;
    flex: 1;
    display: block;
    min-height: 400px;
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--c-bg-2);
    box-shadow: var(--shadow-sm);
    transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.hn-lead:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.hn-lead figure { position: absolute; inset: 0; }
.hn-lead figure img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.65s var(--ease); }
.hn-lead:hover figure img { transform: scale(1.05); }
.hn-lead figure .news-noimg { position: absolute; inset: 0; aspect-ratio: auto; height: 100%; }
.hn-lead::after {
    content: "";
    position: absolute;
    inset: 34% 0 0;
    background: linear-gradient(180deg, transparent, rgba(8, 11, 17, 0.55) 40%, rgba(8, 11, 17, 0.92));
    pointer-events: none;
}
.hn-lead time {
    position: absolute;
    top: 18px;
    left: 18px;
    z-index: 2;
    background: var(--c-accent);
    color: #fff;
    font-family: var(--font-mono);
    font-size: 0.74rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    padding: 5px 10px;
    border-radius: 6px;
    box-shadow: 0 6px 16px rgba(255, 74, 34, 0.35);
}
.hn-lead-body { position: absolute; left: 0; right: 0; bottom: 0; z-index: 2; padding: 28px 30px; }
.hn-lead-body h3 {
    color: #fff;
    font-size: 1.32rem;
    font-weight: 800;
    line-height: 1.45;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.hn-lead-body p {
    margin-top: 10px;
    color: rgba(255, 255, 255, 0.72);
    font-size: 0.92rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.hn-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 16px;
    padding: 9px 18px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.94);
    color: var(--c-dark-text);
    font-size: 0.85rem;
    font-weight: 700;
    transition: background 0.25s, color 0.25s;
}
.hn-cta i { font-style: normal; color: var(--c-accent); transition: transform 0.25s var(--ease); }
.hn-lead:hover .hn-cta { background: var(--c-accent); color: #fff; }
.hn-lead:hover .hn-cta i { transform: translateX(4px); }
.hn-row {
    flex: 1;
    position: relative;
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px 8px;
    border-top: 1px solid var(--c-line-light);
    transition: transform 0.28s var(--ease);
}
.hn-row:first-child { border-top: 0; }
.hn-row:last-child { border-bottom: 1px solid var(--c-line-light); }
.hn-row > time {
    flex-shrink: 0;
    width: 88px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    letter-spacing: 0.02em;
    color: var(--c-dark-text-2);
    transition: color 0.25s;
}
.hn-row-txt { min-width: 0; }
.hn-row-txt h3 {
    font-size: 1.05rem;
    font-weight: 700;
    line-height: 1.5;
    color: var(--c-dark-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: color 0.25s var(--ease);
}
.hn-row-txt p {
    margin-top: 5px;
    color: var(--c-dark-text-2);
    font-size: 0.88rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.hn-row-go {
    margin-left: auto;
    flex-shrink: 0;
    color: var(--c-accent);
    font-size: 1.1rem;
    opacity: 0;
    transform: translateX(-8px);
    transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
}
.hn-row:hover h3 { color: var(--c-accent); }
.hn-row:hover > time { color: var(--c-accent); }
.hn-row:hover .hn-row-go { opacity: 1; transform: none; }

.news-list-rows { display: flex; flex-direction: column; gap: 14px; }
.news-row {
    display: flex;
    align-items: center;
    gap: 26px;
    padding: 22px 26px;
    background: var(--c-bg-2);
    border: 1px solid var(--c-line);
    border-radius: var(--radius);
    color: var(--c-text);
    transition: transform 0.25s var(--ease), border-color 0.25s;
}
.news-row:hover { transform: translateX(6px); border-color: rgba(255, 122, 60, 0.5); }
.news-row time { flex-shrink: 0; color: var(--c-text-2); font-size: 0.9rem; }
.news-row .nr-text { flex: 1; min-width: 0; }
.news-row h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 4px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.news-row p { color: var(--c-text-2); font-size: 0.88rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.news-row > i { font-style: normal; color: var(--c-accent-2); }

/* ---------------- 内页头图 ---------------- */
.page-hero {
    position: relative;
    padding: 96px 0 72px;
    background:
        linear-gradient(100deg, rgba(8, 11, 16, 0.96) 30%, rgba(8, 11, 16, 0.78) 70%, rgba(8, 11, 16, 0.55)),
        url("/uploads/site/image/20240531/1717143285658032.png") center / cover no-repeat;
    color: var(--c-text);
    overflow: hidden;
}
.page-hero::before {
    content: "";
    position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
    background-size: 56px 56px;
    -webkit-mask-image: radial-gradient(ellipse 90% 90% at 50% 0%, #000 20%, transparent 80%);
    mask-image: radial-gradient(ellipse 90% 90% at 50% 0%, #000 20%, transparent 80%);
    pointer-events: none;
}
.page-hero .wrap { position: relative; }
.crumbs {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    letter-spacing: 0.04em;
    color: var(--c-text-2);
    margin-bottom: 20px;
}
.crumbs a:hover { color: var(--c-accent-2); }
.crumbs i { font-style: normal; opacity: 0.5; }
.crumbs .cur { color: #fff; }
.page-hero-title { font-size: clamp(1.9rem, 3.6vw, 2.8rem); font-weight: 800; line-height: 1.2; }
.page-hero-sub { margin-top: 10px; color: var(--c-text-2); font-size: 1.02rem; }
.page-hero .crumbs.reveal { --d: 0.05s; }
.page-hero .page-hero-title.reveal { --d: 0.15s; }
.page-hero .page-hero-sub.reveal { --d: 0.25s; }

/* ---------------- 筛选 chips ---------------- */
.filter-bar { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 40px; }
.chip {
    padding: 9px 22px;
    border-radius: 999px;
    border: 1.5px solid var(--c-line-light);
    color: var(--c-dark-text-2);
    font-size: 0.92rem;
    font-weight: 600;
    transition: color 0.25s, border-color 0.25s, background 0.25s, transform 0.25s, box-shadow 0.25s;
}
.chip:hover { border-color: var(--c-accent); color: var(--c-accent); transform: translateY(-2px); }
.chip.active { background: var(--c-dark-text); border-color: var(--c-dark-text); color: #fff; }
.chip.active:hover { color: #fff; box-shadow: 0 8px 20px rgba(10, 13, 18, 0.25); }
.lead { font-size: 1.05rem; color: var(--c-dark-text-2); max-width: 60em; margin-bottom: 36px; }

/* ---------------- 详情页 ---------------- */
.detail-grid { display: grid; grid-template-columns: 1.02fr 0.98fr; gap: 52px; align-items: start; }
.gallery-main {
    border-radius: var(--radius);
    overflow: hidden;
    background: #000;
    cursor: zoom-in;
}
.gallery-main img { width: 100%; aspect-ratio: 1 / 1; object-fit: contain; transition: transform 0.4s var(--ease); }
.gallery-main:hover img { transform: scale(1.02); }
.gallery-thumbs { display: flex; gap: 12px; margin-top: 14px; flex-wrap: wrap; }
.g-thumb {
    width: 84px; height: 84px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: #000;
    border: 2px solid transparent;
    transition: border-color 0.25s, opacity 0.25s, transform 0.25s;
    opacity: 0.7;
}
.g-thumb img { width: 100%; height: 100%; object-fit: cover; }
.g-thumb:hover { opacity: 1; transform: translateY(-3px); }
.g-thumb.active { border-color: var(--c-accent); opacity: 1; }

.detail-cate {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--c-accent);
    margin-bottom: 12px;
}
.detail-name { font-size: clamp(1.6rem, 2.6vw, 2.2rem); font-weight: 800; line-height: 1.3; color: var(--c-dark-text); margin-bottom: 16px; }
.detail-summary { color: var(--c-dark-text-2); font-size: 1rem; margin-bottom: 26px; }
.detail-params-brief {
    border: 1px solid var(--c-line-light);
    border-radius: var(--radius);
    overflow: hidden;
    margin-bottom: 30px;
}
.detail-params-brief li {
    display: flex;
    justify-content: space-between;
    gap: 18px;
    padding: 12px 18px;
    font-size: 0.94rem;
    transition: background 0.2s;
}
.detail-params-brief li:hover { background: var(--c-light-bg); }
.detail-params-brief li span { color: var(--c-dark-text-2); }
.detail-params-brief li b { font-weight: 700; text-align: right; }
.detail-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-ghost-dark svg { display: none; }

.block-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.3rem;
    font-weight: 800;
    letter-spacing: -0.01em;
    color: var(--c-dark-text);
    margin-bottom: 22px;
}
.block-title::before {
    content: "";
    width: 9px; height: 9px;
    border-radius: 2px;
    background: var(--c-accent);
    flex-shrink: 0;
}
.sec-dark .block-title { color: var(--c-text); }

.spec-block { margin-top: 64px; }
.spec-table { background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm); }
.spec-table th, .spec-table td { padding: 14px 22px; font-size: 0.96rem; border-bottom: 1px solid var(--c-line-light); }
.spec-table tbody tr { transition: background 0.2s; }
.spec-table tbody tr:hover { background: var(--c-light-bg); }
.spec-table tr:last-child th, .spec-table tr:last-child td { border-bottom: 0; }
.spec-table th { width: 220px; background: var(--c-light-bg); font-weight: 700; color: var(--c-dark-text); }
.spec-table td { color: var(--c-dark-text-2); }

/* ---------------- 富文本 ---------------- */
.rich { font-size: 1rem; color: var(--c-dark-text-2); line-height: 1.9; }
.rich p { margin-bottom: 1em; }
.rich p:last-child { margin-bottom: 0; }
.rich strong, .rich b { color: var(--c-dark-text); }
.rich img { border-radius: var(--radius-sm); margin: 1em 0; }
.rich h2, .rich h3 { color: var(--c-dark-text); margin: 1.2em 0 0.6em; font-size: 1.2rem; }
.rich ul, .rich ol { padding-left: 1.4em; margin-bottom: 1em; }
.rich ul { list-style: disc; }
.rich ol { list-style: decimal; }

/* ---------------- 文章 ---------------- */
.article-head { text-align: center; margin-bottom: 34px; }
.article-head h1 { font-size: clamp(1.5rem, 2.8vw, 2.1rem); font-weight: 800; line-height: 1.4; color: var(--c-dark-text); margin-bottom: 14px; }
.article-meta {
    display: flex;
    justify-content: center;
    gap: 16px;
    font-family: var(--font-mono);
    color: var(--c-dark-text-2);
    font-size: 0.78rem;
    letter-spacing: 0.04em;
    flex-wrap: wrap;
}
.article-meta span::before { content: "·"; margin-right: 16px; opacity: 0.5; }
.article-cover { border-radius: var(--radius); overflow: hidden; margin-bottom: 30px; }
.article-body { color: var(--c-dark-text-2); }
.article-pn { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 50px; padding-top: 30px; border-top: 1px solid var(--c-line-light); }
.article-pn .pn:not(a) { visibility: hidden; }
.pn { display: flex; flex-direction: column; gap: 6px; padding: 16px 18px; border-radius: var(--radius-sm); background: var(--c-light-bg); font-size: 0.92rem; min-width: 0; transition: background 0.25s, transform 0.25s; }
.pn em { font-style: normal; color: var(--c-dark-text-2); font-size: 0.8rem; letter-spacing: 0.1em; }
.pn span { font-weight: 700; color: var(--c-dark-text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
a.pn:hover { background: var(--c-light-bg-2); transform: translateY(-2px); }
.pn.next { text-align: right; }
.article-back { margin-top: 26px; text-align: center; }

/* ---------------- FAQ ---------------- */
.faq-list { display: flex; flex-direction: column; gap: 16px; }
.faq-item {
    background: var(--c-bg-2);
    color: var(--c-text);
    border-radius: var(--radius);
    border: 1px solid var(--c-line);
    overflow: hidden;
    transition: border-color 0.25s;
}
.faq-item:hover { border-color: rgba(255, 122, 60, 0.4); }
.faq-item summary {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 22px 26px;
    cursor: pointer;
    font-weight: 700;
    font-size: 1.05rem;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-no { color: var(--c-accent-2); font-weight: 800; font-size: 0.95rem; flex-shrink: 0; }
.faq-q { flex: 1; }
.faq-arrow {
    flex-shrink: 0;
    width: 30px; height: 30px;
    border-radius: 50%;
    border: 1px solid var(--c-line);
    position: relative;
    transition: background 0.25s, transform 0.3s var(--ease);
}
.faq-arrow::before, .faq-arrow::after {
    content: "";
    position: absolute;
    top: 50%; left: 50%;
    background: var(--c-text-2);
    transition: background 0.25s;
}
.faq-arrow::before { width: 12px; height: 2px; transform: translate(-50%, -50%); }
.faq-arrow::after { width: 2px; height: 12px; transform: translate(-50%, -50%); }
.faq-item[open] .faq-arrow { background: var(--c-accent); border-color: var(--c-accent); transform: rotate(180deg); }
.faq-item[open] .faq-arrow::before, .faq-item[open] .faq-arrow::after { background: #fff; }
.faq-item[open] .faq-arrow::after { opacity: 0; }
.faq-a { padding: 0 26px 24px 72px; color: var(--c-text-2); line-height: 1.9; animation: faqIn 0.35s var(--ease); }
@keyframes faqIn { from { opacity: 0; transform: translateY(-8px); } }

/* ---------------- 下载 ---------------- */
.dl-list { display: flex; flex-direction: column; gap: 16px; }
.dl-item {
    display: flex;
    align-items: center;
    gap: 22px;
    padding: 22px 26px;
    background: var(--c-bg-2);
    color: var(--c-text);
    border: 1px solid var(--c-line);
    border-radius: var(--radius);
    transition: border-color 0.25s, transform 0.25s var(--ease);
}
.dl-item:hover { border-color: rgba(255, 122, 60, 0.5); transform: translateX(6px); }
.dl-icon {
    flex-shrink: 0;
    width: 54px; height: 54px;
    border-radius: 14px;
    background: rgba(255, 74, 34, 0.12);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s var(--ease-spring);
}
.dl-item:hover .dl-icon { transform: scale(1.08); }
.dl-icon svg { width: 26px; height: 26px; fill: var(--c-accent-2); }
.dl-text { flex: 1; min-width: 0; }
.dl-text h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 2px; }
.dl-text p { color: var(--c-text-2); font-size: 0.88rem; }

/* ---------------- 企业简介 ---------------- */
.about-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 52px; align-items: start; }
.about-pic { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm); position: sticky; top: calc(var(--header-h) + 20px); }
.about-pic img { width: 100%; }
.stat-list-wide { margin-top: 70px; grid-template-columns: repeat(4, 1fr); }

.cert-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.cert-card {
    background: var(--c-bg-2);
    border: 1px solid var(--c-line);
    border-radius: var(--radius);
    overflow: hidden;
    transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.cert-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-sm); }
.cert-card img { width: 100%; aspect-ratio: 3 / 4; object-fit: cover; cursor: zoom-in; transition: transform 0.5s var(--ease); }
.cert-card:hover img { transform: scale(1.04); }
.cert-card figcaption { padding: 14px 16px; font-size: 0.9rem; font-weight: 600; color: var(--c-text); text-align: center; }

/* ---------------- 支持卡片 ---------------- */
.support-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.support-card {
    display: flex;
    align-items: center;
    gap: 18px;
    padding: 26px 28px;
    border-radius: var(--radius);
    background: var(--c-bg-2);
    border: 1px solid var(--c-line);
    color: var(--c-text);
    transition: border-color 0.25s, transform 0.25s var(--ease);
}
.support-card:hover { border-color: rgba(255, 122, 60, 0.5); transform: translateY(-4px); }
.support-card svg { width: 30px; height: 30px; fill: var(--c-accent-2); flex-shrink: 0; }
.support-card em { font-style: normal; font-size: 0.78rem; letter-spacing: 0.16em; color: var(--c-text-2); display: block; }
.support-card strong { font-size: 1.02rem; font-weight: 700; word-break: break-all; }

/* ---------------- 联系页 ---------------- */
.contact-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; margin-bottom: 70px; }
.contact-card {
    padding: 30px 26px;
    border-radius: var(--radius);
    background: var(--c-light-bg);
    transition: background 0.3s, transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.contact-card:hover { background: #fff; transform: translateY(-5px); box-shadow: var(--shadow-sm); }
.contact-card svg { width: 30px; height: 30px; fill: var(--c-accent); margin-bottom: 16px; }
.contact-card em { font-style: normal; display: block; color: var(--c-dark-text-2); font-size: 0.85rem; margin-bottom: 6px; }
.contact-card strong { font-size: 1.08rem; font-weight: 700; color: var(--c-dark-text); word-break: break-all; }

.msg-grid { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 52px; align-items: start; background: var(--c-bg); color: var(--c-text); border-radius: calc(var(--radius) * 1.4); padding: 56px; }
.msg-side .sec-title { color: var(--c-text); margin-bottom: 8px; }
.msg-side .sec-sub { text-align: left; }
.msg-qr { margin-top: 34px; width: 168px; }
.msg-qr img { border-radius: var(--radius-sm); }
.msg-qr figcaption { text-align: center; font-size: 0.85rem; color: var(--c-text-2); margin-top: 10px; }

.msg-form { display: flex; flex-direction: column; gap: 20px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-field { display: flex; flex-direction: column; gap: 8px; }
.form-field > span { font-size: 0.88rem; font-weight: 600; color: var(--c-text-2); }
.form-field > span i { color: var(--c-accent-2); font-style: normal; margin-left: 3px; }
.form-field input, .form-field textarea {
    background: var(--c-bg-2);
    border: 1px solid var(--c-line);
    border-radius: var(--radius-sm);
    padding: 14px 18px;
    color: var(--c-text);
    outline: none;
    transition: border-color 0.25s, box-shadow 0.25s, background 0.25s;
    resize: vertical;
}
.form-field input:hover, .form-field textarea:hover { border-color: rgba(255, 255, 255, 0.2); }
.form-field input::placeholder, .form-field textarea::placeholder { color: rgba(154, 165, 180, 0.6); }
.form-field input:focus, .form-field textarea:focus { border-color: var(--c-accent); box-shadow: 0 0 0 4px rgba(255, 74, 34, 0.15); background: var(--c-bg-3); }
.msg-form .btn { align-self: flex-start; }

/* ---------------- 页脚 ---------------- */
.site-footer { background: var(--c-bg); color: var(--c-text-2); }
.footer-grid { position: relative; display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.9fr); gap: 56px; padding: 92px 0 54px; }
.footer-grid::before {
    content: "FASIV";
    position: absolute;
    top: 10px; right: 0;
    font-size: clamp(3.5rem, 8vw, 6.5rem);
    font-weight: 800;
    line-height: 1;
    letter-spacing: 0.02em;
    color: transparent;
    -webkit-text-stroke: 1px rgba(255, 255, 255, 0.08);
    pointer-events: none;
    user-select: none;
}
.f-logo { height: 34px; width: auto; margin-bottom: 18px; }
.f-slogan { color: var(--c-text); font-size: 1.06rem; font-weight: 700; margin-bottom: 24px; }
.f-hotline { margin-bottom: 14px; }
.f-hotline small { display: block; font-size: 0.8rem; margin-bottom: 2px; }
.f-hotline a { font-family: var(--font-mono); font-size: 1.5rem; font-weight: 700; color: var(--c-text); letter-spacing: 0.02em; transition: color 0.25s; }
.f-hotline a:hover { color: var(--c-accent-2); }
.f-addr { display: flex; gap: 8px; font-size: 0.9rem; max-width: 30em; }
.f-addr svg { width: 18px; height: 18px; fill: var(--c-accent-2); flex-shrink: 0; margin-top: 4px; }
.f-social { display: flex; gap: 18px; margin-top: 26px; }
.soc {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}
.soc > svg {
    width: 44px; height: 44px;
    padding: 12px;
    box-sizing: border-box;
    border-radius: 50%;
    border: 1px solid var(--c-line);
    fill: var(--c-text-2);
    transition: border-color 0.25s, background 0.25s, fill 0.25s, transform 0.25s var(--ease);
}
.soc:hover, .soc:focus-visible { outline: none; }
.soc:hover > svg, .soc:focus-visible > svg {
    border-color: var(--c-accent);
    background: rgba(255, 74, 34, 0.12);
    fill: #fff;
    transform: translateY(-3px);
}
.soc > em {
    font-style: normal;
    font-size: 0.78rem;
    color: var(--c-text-2);
    line-height: 1;
    transition: color 0.25s;
}
.soc:hover > em { color: var(--c-text); }
.qr-pop {
    position: absolute;
    bottom: calc(100% + 14px);
    left: 50%;
    transform: translateX(-50%) translateY(6px);
    background: #fff;
    padding: 8px;
    border-radius: var(--radius-sm);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s var(--ease), transform 0.25s var(--ease), visibility 0.25s;
    z-index: 10;
}
.qr-pop img { width: 130px; height: 130px; max-width: none; object-fit: contain; border-radius: 6px; }
.qr-pop { width: 146px; }
.soc:hover .qr-pop, .soc:focus-visible .qr-pop { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }

.f-cols { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 30px 20px; }
.f-cols dt {
    font-family: var(--font-mono);
    color: var(--c-text-2);
    font-weight: 600;
    font-size: 0.78rem;
    letter-spacing: 0.12em;
    margin-bottom: 16px;
    white-space: nowrap;
}
.f-cols dd { margin-bottom: 10px; min-width: 0; }
.f-cols a {
    font-size: 0.9rem;
    overflow-wrap: anywhere;
    transition: color 0.25s, padding-left 0.25s var(--ease);
}
.f-cols a:hover { color: var(--c-accent-2); padding-left: 4px; }

.f-bottom { border-top: 1px solid var(--c-line); padding: 20px 0; font-size: 0.84rem; }
.f-bottom-inner { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.f-bottom a { transition: color 0.25s; }
.f-bottom a:hover { color: var(--c-accent-2); }

/* ---------------- 浮动工具条 ---------------- */
.float-rail {
    position: fixed;
    right: 22px;
    bottom: 90px;
    z-index: 90;
    display: flex;
    flex-direction: column;
    gap: 10px;
    animation: railIn 0.6s var(--ease) 0.6s backwards;
}
@keyframes railIn { from { opacity: 0; transform: translateX(24px); } }
.rail-item {
    position: relative;
    width: 44px; height: 44px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(8px);
    border: 1px solid var(--c-line-light);
    box-shadow: var(--shadow-sm);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.25s, border-color 0.25s, transform 0.25s var(--ease);
}
.rail-item svg { width: 19px; height: 19px; fill: var(--c-dark-text); transition: fill 0.25s; }
.rail-item:hover { background: var(--c-accent); border-color: var(--c-accent); transform: translateY(-2px); }
.rail-item:hover svg { fill: #fff; }
#back-top:not([hidden]) { animation: popIn 0.35s var(--ease-spring); }
@keyframes popIn { from { opacity: 0; transform: scale(0.6); } }
.rail-pop-box {
    position: absolute;
    right: calc(100% + 16px);
    top: 50%;
    transform: translateY(-50%) translateX(8px);
    background: var(--c-bg-2);
    color: var(--c-text);
    border: 1px solid var(--c-line);
    padding: 16px 20px;
    border-radius: var(--radius-sm);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s var(--ease), transform 0.25s var(--ease), visibility 0.25s;
    text-align: center;
    white-space: nowrap;
}
.rail-pop-box strong { display: block; font-size: 1.15rem; font-weight: 800; }
.rail-pop-box em { font-style: normal; font-size: 0.8rem; color: var(--c-text-2); }
.rail-pop-box.rail-pop-qr { width: 168px; }
.rail-pop-qr img { width: 128px; height: 128px; max-width: none; object-fit: contain; border-radius: 6px; background: #fff; padding: 4px; }
.rail-pop:hover .rail-pop-box, .rail-pop:focus-visible .rail-pop-box,
.rail-pop-box:hover { opacity: 1; visibility: visible; transform: translateY(-50%) translateX(0); }

/* ---------------- 弹窗 / 提示 ---------------- */
.modal { position: fixed; inset: 0; z-index: 200; display: flex; align-items: center; justify-content: center; }
.modal[hidden] { display: none; }
.modal-mask { position: absolute; inset: 0; background: rgba(4, 7, 12, 0.86); backdrop-filter: blur(4px); animation: fadeIn 0.3s ease; }
@keyframes fadeIn { from { opacity: 0; } }
.modal-body {
    position: relative;
    width: min(920px, 92vw);
    background: var(--c-bg-2);
    border-radius: var(--radius);
    padding: 12px;
    box-shadow: var(--shadow);
    animation: popBig 0.35s var(--ease-spring);
}
@keyframes popBig { from { transform: scale(0.92); opacity: 0; } to { transform: scale(1); opacity: 1; } }
.modal-body video { width: 100%; aspect-ratio: 16 / 9; border-radius: 10px; background: #000; display: block; }
.modal-close {
    position: absolute;
    top: -46px; right: 0;
    width: 38px; height: 38px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
    font-size: 22px;
    line-height: 1;
    transition: background 0.25s, transform 0.25s;
}
.modal-close:hover { background: var(--c-accent); transform: rotate(90deg); }
.modal-lightbox { width: min(1000px, 94vw); padding: 8px; }
.modal-lightbox img { width: 100%; max-height: 82vh; object-fit: contain; border-radius: 8px; }

.toast {
    position: fixed;
    top: 90px;
    left: 50%;
    transform: translateX(-50%) translateY(-16px);
    z-index: 300;
    background: var(--c-bg-2);
    color: var(--c-text);
    border: 1px solid var(--c-line);
    border-left: 4px solid var(--c-accent);
    padding: 14px 26px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    font-size: 0.95rem;
    opacity: 0;
    transition: opacity 0.3s, transform 0.3s var(--ease);
    max-width: 88vw;
    text-align: center;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.ok { border-left-color: #2fbf71; }

/* ---------------- 动效系统 ---------------- */
/* 进场：默认上移淡入，配合 --d 自定义延迟做阶梯节奏（expo-out 丝滑缓动） */
.reveal {
    opacity: 0;
    transform: translateY(34px);
    transition: opacity 1s var(--ease-out), transform 1s var(--ease-out);
    transition-delay: var(--d, 0ms);
}
.reveal-scale { transform: translateY(10px) scale(0.94); }
.reveal-left { transform: translateX(-36px); }
.reveal-right { transform: translateX(36px); }
.reveal.in { opacity: 1; transform: none; }
/* 无 JS 时直接可见 */
.no-js .reveal, .reveal.no-io { opacity: 1; transform: none; }

/* 页面整体淡入 */
#main { animation: pageIn 0.55s var(--ease) both; }
@keyframes pageIn { from { opacity: 0; transform: translateY(14px); } }

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .reveal { opacity: 1; transform: none; transition: none; }
    #main, .search-bar, .float-rail, #back-top, .faq-a, .m-nav details ul,
    .hero-eq i, .hero-eq, .hero-tilt img, .hero-cue-line::after,
    .hero-dots.running button.on::after { animation: none !important; }
    .hero-slide, .hero.has-js .hero-slide.is-on .hl-in, .hero-tilt img { transition: none; }
    .marquee-track { transform: none; }
    .sec.sec-merit { background-attachment: scroll; }
    * { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}

/* ---------------- 响应式 ---------------- */
@media (max-width: 1359px) {
    .menu { gap: 0; }
    .menu > li > a { padding: 10px 13px; font-size: 0.95rem; }
    .menu > li > a::after { left: 13px; right: 13px; }
    .submenu { min-width: 480px; }
}

@media (max-width: 1199px) {
    .main-nav { display: none; }
    .shop-wrap { display: none; }
    .nav-toggle { display: inline-flex; }
    .header-inner { justify-content: space-between; gap: 12px; }
    .p-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
    .merit-list { grid-template-columns: repeat(2, 1fr); }
    .merit-list li { padding: 28px 26px; }
    .media-grid { grid-template-columns: repeat(2, 1fr); }
    .cert-grid { grid-template-columns: repeat(3, 1fr); }
    .contact-grid { grid-template-columns: repeat(2, 1fr); }
    .f-cols { grid-template-columns: repeat(3, 1fr); gap: 34px 24px; }
    .footer-grid { gap: 44px; }
}

@media (max-width: 1024px) {
    /* 移动端：产品图虚化为背景，文字居中压在氛围之上 */
    .hero-inner {
        grid-template-columns: 1fr;
        align-content: center;
        text-align: center;
        gap: 0;
        padding-top: calc(var(--header-h-sm) + 26px);
        padding-bottom: 168px;
    }
    .hero-copy { position: relative; z-index: 2; }
    .hero-copy::before {
        content: "";
        position: absolute;
        inset: -10% -14%;
        z-index: -1;
        background: radial-gradient(62% 62% at 50% 50%, rgba(8, 11, 17, 0.78), transparent 76%);
        pointer-events: none;
    }
    .hero-visual {
        position: absolute;
        inset: 0;
        z-index: -1;
        display: flex;
        align-items: center;
        justify-content: center;
        opacity: 0.26;
    }
    .hero-tilt img { max-height: 78vh; }
    .hero-sub { margin-left: auto; margin-right: auto; }
    .hero-actions { justify-content: center; }
    .hero-nav { left: 50%; transform: translateX(-50%); justify-content: center; bottom: 56px; }
    .hero-cue { display: none; }
    .hero-eq { display: none; }
    .scene-list { grid-template-columns: repeat(2, 1fr); }
    .scene-list li:nth-child(odd) { border-left: 0; }
    .scene-list li:nth-child(n+3) { border-top: 1px solid var(--c-line-light); }
    .scene-list a { padding: 24px 16px; gap: 12px; }
    .scene-go { display: none; }
    /* 视差固定背景在触屏上性能差，退化为滚动 */
    .sec.sec-merit { background-attachment: scroll; }
    /* 首页专属橱窗/报刊布局转单列 */
    .pf-grid, .hn-grid { grid-template-columns: 1fr; }
    .pf-lead { min-height: 400px; }
    .hn-lead { min-height: 340px; }
    .detail-grid, .about-grid { grid-template-columns: 1fr; gap: 36px; }
    .about-pic { position: static; }
    .msg-grid { grid-template-columns: 1fr; padding: 36px 26px; gap: 34px; }
    .sec { padding: 66px 0; }
    .sec-head { margin-bottom: 40px; }
    .sec-head-row { flex-direction: column; align-items: flex-start; }
    .support-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
    .wrap { padding: 0 18px; }
    .p-grid, .news-grid, .merit-list, .media-grid { grid-template-columns: 1fr; }
    .scene-list { grid-template-columns: 1fr; }
    .scene-list li { border-left: 0; border-top: 1px solid var(--c-line-light); }
    .scene-list li:first-child { border-top: 0; }
    .scene-list a { min-height: 0; padding: 18px 20px; justify-content: flex-start; gap: 14px; }
    .scene-photo { grid-template-columns: 1fr; gap: 16px; margin-bottom: 52px; }
    .sp-col { gap: 16px; }
    .sp-tall { aspect-ratio: 4 / 5; }
    .sp-more { right: 12px; bottom: 12px; padding: 8px 13px; font-size: 0.8rem; }
    .merit-list li { gap: 16px; padding: 24px 20px; }
    .merit-ico { width: 58px; height: 58px; border-radius: 12px; }
    .merit-ico::before { width: 36px; height: 36px; }
    .merit-list li::before { top: 12px; right: 14px; }
    .pf-lead { min-height: 360px; }
    .pf-lead-body, .hn-lead-body { padding: 20px 22px; }
    .pf-lead-body h3 { font-size: 1.22rem; }
    .hn-lead-body h3 { font-size: 1.12rem; }
    .pf-row { gap: 14px; padding: 16px; }
    .pf-row figure { width: 96px; }
    .hn-row { gap: 14px; padding: 18px 4px; }
    .hn-row > time { width: auto; }
    .stat-list { grid-template-columns: repeat(2, 1fr); gap: 28px 14px; }
    .v-grid { grid-template-columns: 1fr; }
    .cert-grid { grid-template-columns: repeat(2, 1fr); }
    .contact-grid { grid-template-columns: 1fr; }
    .support-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .f-cols { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr; gap: 44px; padding: 52px 0 40px; }
    .spec-table th { width: auto; display: block; border-bottom: 0; padding-bottom: 2px; }
    .spec-table td { display: block; padding-top: 2px; }
    .spec-table tr { display: block; border-bottom: 1px solid var(--c-line-light); }
    .spec-table tr:last-child { border-bottom: 0; }
    .float-rail { right: 14px; bottom: 76px; }
    .rail-pop-box { display: none; }
    .msg-form .btn { align-self: stretch; justify-content: center; }
    .news-row { flex-wrap: wrap; gap: 10px; }
    .news-row time { width: 100%; }
}

@media (max-width: 420px) {
    .logo img { height: 30px; }
    .site-header.scrolled .logo img { height: 26px; }
    .lang-toggle span { display: none; }
    .lang-toggle { padding: 8px 10px; }
    .btn-lg { padding: 13px 24px; font-size: 0.95rem; }
    .page-hero { padding: 54px 0 44px; }
    .header-inner { gap: 6px; }
    .header-tools { gap: 4px; }
}