@charset "utf-8";
/* ============================================================
   黄石长江换热器有限公司 · 官网视觉系统 v2.0
   工业质感 / 深钢蓝 + 热橙点缀 / 响应式
   ============================================================ */

:root {
    --ink:        #0A1B2A;
    --ink-2:      #142A3E;
    --brand:      #0F4C81;
    --brand-2:    #1A6FB0;
    --brand-soft: #EAF2F9;
    --accent:     #E4572E;
    --accent-soft:#FDEDE7;
    --text:       #1E2A36;
    --muted:      #5F7183;
    --muted-2:    #8A9AAB;
    --line:       #DFE6EE;
    --line-2:     #EDF1F6;
    --bg:         #FFFFFF;
    --bg-soft:    #EEF2F6;
    --bg-dark:    #081826;
    --radius:     2px;
    --font-mono:  ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, "Liberation Mono", monospace;
    --container:  2100px;
    --gutter:     clamp(18px, 2.6vw, 64px);
    --shadow-sm:  0 1px 2px rgba(10, 27, 42, .06);
    --shadow-md:  0 8px 24px rgba(10, 27, 42, .08);
    --shadow-lg:  0 20px 50px rgba(10, 27, 42, .14);
    --ease:       cubic-bezier(.16, 1, .3, 1);
    --ff: "Segoe UI", "Helvetica Neue", Roboto, "PingFang SC", "Hiragino Sans GB",
          "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: var(--ff);
    font-size: 16px;
    line-height: 1.75;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; vertical-align: middle; border: 0; }
a { color: inherit; text-decoration: none; transition: color .25s var(--ease); }
h1, h2, h3, h4, h5 { margin: 0; font-weight: 700; line-height: 1.3; color: var(--ink); }
p { margin: 0 0 1em; }
ul, ol { margin: 0; padding: 0; list-style: none; }
button { font-family: inherit; cursor: pointer; border: 0; background: none; }
input, textarea { font-family: inherit; font-size: inherit; }
::selection { background: var(--brand); color: #fff; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* ---------- 按钮 ---------- */
.btn {
    display: inline-flex; align-items: center; gap: 10px;
    height: 52px; padding: 0 32px;
    font-size: 15px; font-weight: 600; letter-spacing: .02em;
    border-radius: var(--radius);
    transition: all .28s var(--ease);
    white-space: nowrap;
}
.btn svg { width: 16px; height: 16px; transition: transform .3s var(--ease); }
.btn:hover svg { transform: translateX(3px); }
/* 主按钮：深钢蓝实心（对齐参考站的克制配色，暖橙只作微小点缀） */
.btn--primary { background: var(--brand); color: #fff; }
.btn--primary:hover { background: #0B3E6B; transform: translateY(-2px); box-shadow: 0 12px 26px rgba(15, 76, 129, .24); }
.btn--accent { background: var(--accent); color: #fff; }
.btn--accent:hover { background: #cf4a24; transform: translateY(-2px); box-shadow: 0 12px 26px rgba(228, 87, 46, .3); }
.btn--dark { background: var(--ink); color: #fff; }
.btn--dark:hover { background: #0c3f6c; transform: translateY(-2px); }
.btn--ghost { border: 1px solid rgba(255, 255, 255, .38); color: #fff; }
.btn--ghost:hover { background: rgba(255, 255, 255, .12); border-color: #fff; }
.btn--line { border: 1px solid var(--line); color: var(--ink); background: #fff; }
.btn--line:hover { border-color: var(--brand); color: var(--brand); background: #fff; }
.btn--sm { height: 42px; padding: 0 20px; font-size: 13.5px; }

/* ============================================================
   顶部信息条 + 主导航
   ============================================================ */
.topbar {
    background: var(--ink);
    color: rgba(255, 255, 255, .72);
    font-size: 13.5px;
    letter-spacing: .01em;
}
.topbar__inner {
    display: flex; align-items: center; justify-content: space-between;
    height: 44px;
}
.topbar__left { display: flex; align-items: center; gap: 22px; }
.topbar__item { display: inline-flex; align-items: center; gap: 7px; }
.topbar__item svg { width: 13px; height: 13px; opacity: .7; }
.topbar__item b { color: #fff; font-weight: 600; letter-spacing: .04em; }
.topbar__right { display: flex; align-items: center; gap: 18px; }

.lang-switch { display: inline-flex; align-items: center; gap: 6px; }
.lang-switch a {
    padding: 2px 6px; color: rgba(255, 255, 255, .6);
    font-size: 12.5px; border-radius: 2px;
}
.lang-switch a.is-active { color: #fff; font-weight: 700; background: rgba(255, 255, 255, .12); }
.lang-switch a:hover { color: #fff; }
.lang-switch i { font-style: normal; opacity: .35; }

.site-header {
    position: sticky; top: 0; z-index: 90;
    background: #fff;
    border-bottom: 1px solid var(--line);
    transition: box-shadow .3s var(--ease);
}
.site-header.is-stuck { box-shadow: 0 6px 20px rgba(10, 27, 42, .08); }
.header__inner {
    display: flex; align-items: center; justify-content: space-between;
    height: 98px; gap: 36px;
}
.logo { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.logo img { width: 276px; height: auto; }
.logo__mark {
    width: 38px; height: 38px; border-radius: 50%;
    display: grid; place-items: center;
    background: linear-gradient(135deg, var(--brand), var(--brand-2));
    color: #fff; font-weight: 800; font-size: 15px; letter-spacing: -.02em;
}

.nav { display: flex; align-items: center; height: 100%; }
.nav__list { display: flex; align-items: center; height: 100%; gap: 4px; }
.nav__list > li { height: 100%; display: flex; align-items: center; position: relative; }
.nav__list > li > a {
    display: flex; align-items: center; height: 100%;
    padding: 0 19px;
    font-size: 16.5px; font-weight: 600; color: var(--ink);
    position: relative;
}
.nav__list > li > a::after {
    content: ""; position: absolute; left: 19px; right: 19px; bottom: 30px;
    height: 2px; background: var(--accent);
    transform: scaleX(0); transform-origin: left;
    transition: transform .3s var(--ease);
}
.nav__list > li > a:hover { color: var(--brand); }
.nav__list > li > a:hover::after,
.nav__list > li.is-active > a::after { transform: scaleX(1); }
.nav__list > li.is-active > a { color: var(--brand); }

.header__actions { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.icon-btn {
    width: 40px; height: 40px; display: grid; place-items: center;
    border-radius: 50%; color: var(--ink); transition: all .25s var(--ease);
}
.icon-btn:hover { background: var(--bg-soft); color: var(--brand); }
.icon-btn svg { width: 18px; height: 18px; }
.nav-toggle { display: none; }

/* 搜索浮层 */
.search-pop {
    position: absolute; left: 0; right: 0; top: 100%;
    background: #fff; border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-md);
    padding: 20px 0;
    display: none;
}
.search-pop.is-open { display: block; animation: slideDown .3s var(--ease); }
@keyframes slideDown { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: none; } }
.search-form { display: flex; gap: 10px; max-width: 720px; margin: 0 auto; }
.search-form input {
    flex: 1; height: 48px; padding: 0 18px;
    border: 1px solid var(--line); border-radius: var(--radius);
    outline: none; transition: border-color .2s;
}
.search-form input:focus { border-color: var(--brand); }

/* 移动端抽屉 */
.nav-drawer {
    position: fixed; inset: 0; z-index: 200;
    visibility: hidden; pointer-events: none;
}
.nav-drawer.is-open { visibility: visible; pointer-events: auto; }
.nav-drawer__mask {
    position: absolute; inset: 0; background: rgba(8, 24, 38, .5);
    opacity: 0; transition: opacity .3s var(--ease);
}
.nav-drawer.is-open .nav-drawer__mask { opacity: 1; }
.nav-drawer__panel {
    position: absolute; right: 0; top: 0; bottom: 0; width: 84%; max-width: 340px;
    background: #fff; padding: 24px;
    transform: translateX(100%); transition: transform .35s var(--ease);
    display: flex; flex-direction: column; gap: 8px; overflow-y: auto;
}
.nav-drawer.is-open .nav-drawer__panel { transform: none; }
.nav-drawer__head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.nav-drawer__list a {
    display: block; padding: 14px 4px; font-size: 16px; font-weight: 600;
    border-bottom: 1px solid var(--line-2); color: var(--ink);
}
.nav-drawer__list a.is-active { color: var(--brand); }
.nav-drawer .lang-switch a { color: var(--muted); }
.nav-drawer .lang-switch a.is-active { color: #fff; background: var(--brand); }

/* ============================================================
   首屏
   ============================================================ */
.hero { color: #fff; }
/* 首屏：整幅厂区照片 + 深色渐层 + 大字标题（铺满首屏） */
.hero { position: relative; overflow: hidden; background: var(--ink); }
.hero__bg {
    position: absolute; left: 0; right: 0; top: -10%; bottom: -10%;
    z-index: 0; will-change: transform;
    transform: translate3d(0, var(--py, 0px), 0);
}
.hero__bg img { width: 100%; height: 100%; object-fit: cover; object-position: 62% center; }
.hero::after {
    content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none;
    background:
        linear-gradient(90deg, rgba(6, 18, 30, .88) 0%, rgba(6, 18, 30, .72) 34%, rgba(6, 18, 30, .32) 64%, rgba(6, 18, 30, .08) 100%),
        linear-gradient(to top, rgba(6, 18, 30, .74), rgba(6, 18, 30, 0) 46%);
}
.hero__inner {
    position: relative; z-index: 2;
    display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, .92fr);
    align-items: center; gap: clamp(24px, 3vw, 56px);
    min-height: clamp(560px, calc(100vh - 142px), 1080px);
    padding-top: clamp(64px, 6vw, 96px); padding-bottom: clamp(56px, 5vw, 88px);
}
.hero__text { max-width: min(880px, 50vw); }
.hero__eyebrow {
    display: inline-flex; align-items: center; gap: 14px;
    font-size: 12px; font-weight: 600; letter-spacing: .2em;
    color: rgba(255, 255, 255, .62); text-transform: uppercase;
    margin-bottom: 26px;
}
.hero__eyebrow::before { content: ""; width: 46px; height: 1px; background: rgba(255, 255, 255, .5); }
.hero__title {
    font-size: clamp(34px, 4.9vw, 82px); line-height: 1.12; letter-spacing: -.03em;
    color: #fff; margin-bottom: 24px; font-weight: 800;
}
/* 标题拆两行显示：每行一个块，字号可以放大到接近参考站的体量 */
.hero__title span { display: block; }
.hero__title span + span { color: rgba(255, 255, 255, .9); }
/* 英文标题字符宽度远大于中文，单独降一档字号，保证仍是一行一句 */
html:lang(en) .hero__title { font-size: clamp(28px, 4.15vw, 62px); letter-spacing: -.03em; }
html:lang(en) .hero__text { max-width: min(880px, 52vw); }
.hero__sub {
    font-size: clamp(15px, 1.05vw, 20px); color: rgba(255, 255, 255, .76);
    font-weight: 400; letter-spacing: .01em; margin-bottom: 38px;
}
.hero__desc {
    font-size: clamp(15px, .55vw + 8px, 19px); line-height: 1.95; color: rgba(255, 255, 255, .66);
    max-width: 760px; margin-bottom: 44px;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 16px; }
.hero__tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: clamp(34px, 4vw, 60px); }
.hero__tags span {
    font-size: 12px; letter-spacing: .1em; color: rgba(255, 255, 255, .68);
    border: 1px solid rgba(255, 255, 255, .2); padding: 7px 16px; border-radius: 100px;
}

/* 首屏右侧：六边形产品群（白底六边形 + 白底产品图，mix-blend 让边缘无缝） */
.hero__cluster {
    position: relative; align-self: center;
    width: 100%;
    /* 三个上限取最小：46vw 跟随栅格、72vh 保证首屏不因为六边形群过高而被顶出 100vh、880px 封顶
       （只用 vw 的话，1920×1000 这种"宽而不高"的窗口会把首屏撑到 962px，需要滚动才看得全） */
    max-width: min(46vw, 72vh, 880px);
    aspect-ratio: 1 / .92;
    margin-right: calc(var(--gutter) * -.06);
    /* 上限生效后列内会留空，靠右贴住栅格边，跟参考站一样把产品群压到画面右侧 */
    margin-left: auto;
}
.hex-wrap {
    position: absolute;
    display: block;
    /* 参考站的六边形几乎是"贴在照片上"的白片，只有极淡的接触阴影；
       大范围深色投影会变成一圈脏灰，反而把它压回平面 */
    filter: drop-shadow(0 5px 12px rgba(3, 12, 22, .22)) drop-shadow(0 18px 34px rgba(3, 12, 22, .26));
    animation: hexFloat 9s ease-in-out infinite;
}
.hex {
    display: block; width: 100%; height: 100%;
    /* 纯 #fff 在暗照片上像贴纸；自上而下极轻的冷白渐变，才像一块"打了光的展台" */
    background: linear-gradient(158deg, #ffffff 0%, #fbfdff 42%, #edf3fa 100%);
    clip-path: polygon(25% 0%, 75% 0%, 100% 50%, 75% 100%, 25% 100%, 0% 50%);
    overflow: hidden;
}
.hex img {
    width: 100%; height: 100%; object-fit: contain; display: block;
    /* 11% 是宽幅产品图在这个六边形内的最大内接边距：再小，斜边会切掉产品两端 */
    padding: 11%;
}
/* 四枚六边形按参考站那种"菱形"排布：左上一个、右上一个（最大）、
   中间偏下、左下一个小号。大小 36 / 46 / 40 / 22 拉开节奏，
   左下那枚刻意越出容器 2%，像是在暗示"还有更多产品" */
.hex--1 { left: 0%;   top: 5%;  width: 36%; aspect-ratio: 1 / .88; animation-delay: 0s; }
.hex--2 { left: 44%;  top: 0%;  width: 46%; aspect-ratio: 1 / .88; animation-delay: -2.2s; }
.hex--3 { left: 22%;  top: 46%; width: 40%; aspect-ratio: 1 / .88; animation-delay: -4.4s; }
.hex--4 { left: -2%;  top: 64%; width: 22%; aspect-ratio: 1 / .88; animation-delay: -6.6s; }
@keyframes hexFloat {
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(-13px); }
}
/* 向下浏览提示 */
.hero__scroll {
    position: absolute; left: 50%; bottom: 26px; z-index: 3;
    width: 26px; height: 42px; margin-left: -13px;
    border: 1px solid rgba(255, 255, 255, .32); border-radius: 100px;
    display: none;
}
.hero__scroll i {
    position: absolute; left: 50%; top: 9px; width: 3px; height: 7px; margin-left: -1.5px;
    background: rgba(255, 255, 255, .8); border-radius: 2px;
    animation: scrollCue 1.9s var(--ease) infinite;
}
@keyframes scrollCue {
    0%   { transform: translateY(0); opacity: 1; }
    70%  { transform: translateY(14px); opacity: 0; }
    100% { transform: translateY(0); opacity: 0; }
}
@media (min-height: 720px) and (min-width: 992px) { .hero__scroll { display: block; } }

/* 首屏规格条（工程数据条，替代浮动卡片） */
.spec-strip { background: var(--bg-dark); border-top: 1px solid rgba(255, 255, 255, .1); }
.spec-strip__inner { display: grid; grid-template-columns: repeat(4, 1fr); }
.spec { padding: 42px 0 44px 34px; border-left: 1px solid rgba(255, 255, 255, .1); }
.spec:first-child { border-left: 0; padding-left: 0; }
/* 嵌在正文列内的数据条：需要左右内边距，否则首尾数字贴边 */
.spec-strip--inline { margin-top: 48px; padding: 0 26px; border-radius: var(--radius); }
.spec-strip--inline .spec__num { font-size: 30px; }
.spec-strip--inline .spec { padding-top: 26px; padding-bottom: 26px; }
.spec__num {
    display: flex; align-items: baseline; gap: 3px;
    font-family: var(--font-mono);
    font-size: clamp(34px, 3.4vw, 54px); font-weight: 600; letter-spacing: -.03em;
    color: #fff; line-height: 1; font-variant-numeric: tabular-nums;
}
.spec__num em { font-style: normal; font-size: 19px; color: var(--accent); font-weight: 600; }
.spec__label {
    display: block; margin-top: 12px;
    font-size: 12.5px; letter-spacing: .14em; text-transform: uppercase;
    color: rgba(255, 255, 255, .48);
}

/* ============================================================
   通用区块
   ============================================================ */
.section { padding: clamp(72px, 7.2vw, 152px) 0; }
.section--soft { background: var(--bg-soft); }
.section--dark { background: var(--bg-dark); color: rgba(255, 255, 255, .74); }
.section--tight { padding: clamp(56px, 5vw, 104px) 0; }

.section-head { margin-bottom: clamp(38px, 3.4vw, 64px); position: relative; }
.section-head--center { text-align: center; }
/* 标题在左、操作在右（参考站的产品/新闻区标题行） */
.section-head--row {
    display: flex; align-items: flex-end; justify-content: space-between;
    gap: 32px; flex-wrap: wrap;
}
.section-head--row > div { max-width: 780px; }
.section-head--row .section-head__more { position: static; margin-bottom: 6px; }
.section-head__eyebrow {
    font-size: 12px; font-weight: 700; letter-spacing: .2em;
    color: var(--brand); text-transform: uppercase; margin-bottom: 14px;
    display: flex; align-items: center; gap: 10px;
}
.section-head--center .section-head__eyebrow { justify-content: center; }
.section-head__eyebrow::before {
    content: ""; width: 22px; height: 1px; background: currentColor; opacity: .55;
}
.section-head h2 {
    font-size: clamp(28px, 3vw, 58px); letter-spacing: -.025em; line-height: 1.18;
}
.section-head p {
    margin-top: 18px; color: var(--muted); font-size: clamp(16px, 1vw, 20px);
    line-height: 1.85; max-width: 900px;
}
.section-head--center p { margin-left: auto; margin-right: auto; max-width: 900px; text-wrap: balance; }
.section-head__cta { margin-top: 32px; }
.section-head--center .section-head__cta { margin-left: auto; margin-right: auto; }
.section-head__more {
    position: absolute; right: 0; bottom: 4px;
    display: inline-flex; align-items: center; gap: 8px;
    font-size: 15px; font-weight: 600; color: var(--ink);
}
.section-head__more:hover { color: var(--brand); gap: 12px; }
.section-head__more svg { width: 15px; height: 15px; }
.section-head__more--light { color: rgba(255, 255, 255, .72); }
.section--dark .section-head__eyebrow { color: rgba(255, 255, 255, .5); }
.section--dark .section-head p { color: rgba(255, 255, 255, .58); }
.section-head__more--light:hover { color: #fff; }

/* 实力区：四张等宽卡片
   参考站的卡片是"大图标 + 大标题 + 居中说明"三段式，靠 1px 细边 + 大范围柔光投影浮起来。
   不再放 01–04 角标：产品、应用领域已经用过两遍编号，第三遍重复会显得廉价。 */
.pillars {
    display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: clamp(16px, 1.4vw, 26px);
}
.pillar {
    position: relative;
    background: #fff;
    border: 1px solid rgba(10, 27, 42, .07);
    box-shadow: 0 2px 6px rgba(10, 27, 42, .03);
    padding: clamp(40px, 3.2vw, 54px) clamp(22px, 1.9vw, 34px) clamp(34px, 2.8vw, 46px);
    text-align: center;
    transition: transform .45s var(--ease), box-shadow .45s var(--ease), border-color .45s var(--ease);
}
/* 图标背后的淡蓝光晕：没有它，细线图标在纯白卡片上会显得"飘" */
.pillar::before {
    content: ""; position: absolute; left: 50%; top: clamp(22px, 2vw, 34px);
    width: 108px; height: 108px; margin-left: -54px; border-radius: 50%;
    background: radial-gradient(circle, rgba(15, 74, 128, .09), rgba(15, 74, 128, 0) 70%);
    opacity: 0; transition: opacity .45s var(--ease);
}
.pillar__icon {
    position: relative;
    display: block; width: clamp(38px, 2.9vw, 46px); height: clamp(38px, 2.9vw, 46px);
    margin: 0 auto clamp(26px, 2.4vw, 34px);
    color: var(--brand); transition: transform .45s var(--ease);
}
.pillar h3 {
    font-size: clamp(19px, 1.45vw, 24px); line-height: 1.4;
    margin-bottom: 14px; letter-spacing: -.01em;
}
.pillar p {
    font-size: 14.8px; line-height: 1.88; color: var(--muted); margin: 0;
    /* 用 pretty 而不是 balance：balance 会把两行"对齐到等宽"，中文没有词边界，
       于是"200 余/种""免费提/供"这种词被从中间劈开。greedy 排满第一行反而正好落在标点处 */
    text-wrap: pretty;
}
.pillar:hover {
    transform: translateY(-6px);
    border-color: rgba(15, 74, 128, .16);
    box-shadow: 0 26px 52px -14px rgba(10, 27, 42, .18);
}
.pillar:hover::before { opacity: 1; }
.pillar:hover .pillar__icon { transform: translateY(-3px); }

/* 优势区：编号行（工程规格表结构，无图标卡片） */
.adv-list { border-top: 1px solid var(--line); }
.adv-row {
    display: grid; grid-template-columns: clamp(84px, 7vw, 132px) minmax(260px, 430px) minmax(0, 1fr);
    gap: clamp(32px, 4vw, 76px); align-items: start;
    padding: clamp(32px, 2.6vw, 48px) 0;
    border-bottom: 1px solid var(--line);
    transition: background .35s var(--ease), box-shadow .35s var(--ease);
}
.adv-row:hover { background: var(--bg-soft); box-shadow: inset 3px 0 0 var(--accent); }
.adv-row__idx {
    font-family: var(--font-mono); font-size: 14px; font-weight: 600;
    color: var(--accent); letter-spacing: .08em; padding-top: 6px;
}
.adv-row h3 { font-size: clamp(20px, 1.5vw, 27px); letter-spacing: -.01em; display: flex; flex-direction: column; gap: 6px; }
.adv-row h3 span {
    font-size: 11.5px; letter-spacing: .22em; text-transform: uppercase;
    color: var(--muted-2); font-weight: 600;
}
.adv-row p {
    margin: 2px 0 0; padding-left: 32px;
    border-left: 1px solid var(--line-2);
    font-size: 17px; line-height: 1.85; color: var(--muted); max-width: 46ch;
}

/* 通栏双图：两张图并排，鼠标移到哪张就把那张从 1 份撑到 2 份（33% ↔ 66%）
   斜缝为什么用 transform:skewX 而不是 clip-path：clip-path 的斜边是百分比，
   面板宽度一变角度就跟着变；skew 的角度固定，两张图的斜缝永远平行。 */
.duo-band { position: relative; overflow: hidden; background: #fff; --bleed: 80px; }
.duo-band__track {
    display: flex;
    /* 比视口宽 2*bleed 并向左偏 bleed：skew 之后每个面板顶边会内缩 h/2*tan10° ≈ 62px，
       不补的话首尾会露出白色三角 */
    width: calc(100% + var(--bleed) * 2);
    margin-left: calc(var(--bleed) * -1);
}
.duo-band__item {
    position: relative; display: block;
    flex: 1 1 0; min-width: 0;
    height: clamp(420px, 40vw, 700px);
    margin-right: 10px;
    overflow: hidden;
    transform: skewX(-10deg);
    transition: flex-grow .7s var(--ease);
}
.duo-band__item:last-child { margin-right: 0; }
.duo-band__item.is-on { flex-grow: 2; }

/* 面板只是"窗口"：里面的照片是 100vw 宽的死尺寸大图，窗口变宽只是多看到照片的一部分，
   照片本身不缩放、不拉伸——这是参考站那种"画面在横向推移"的来源 */
.duo-band__media {
    position: absolute;
    top: 0; height: 100%;
    /* 132% 宽 / 左移 16% 是给 skew 留的余量：斜切会让左右各偏出 h/2*tan10° ≈ 50px，
       不富余的话面板四角会露出白底。宽度本身不改变照片比例尺 —— cover 的缩放由高度决定 */
    left: -16%; width: 132%;
    /* 反向抵消面板的斜切，照片里的厂房立柱才是垂直的 */
    transform: skewX(10deg);
}
.duo-band__media img { display: block; width: 100%; height: 100%; object-fit: cover; object-position: var(--pos, 50%) center; }
.duo-band__item--a { --pos: 38%; }   /* 厂房主体偏左，取景往左推 */
.duo-band__item--b { --pos: 74%; }   /* 细节图正中是一片没有肌理的不锈钢管身，往右推到法兰口才看得出是换热器 */
/* 底部压暗：保证任何状态下文字区都够深 */
.duo-band__item::after {
    content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none;
    background: linear-gradient(to top, rgba(5, 15, 26, .66) 0%, rgba(5, 15, 26, .16) 38%, rgba(5, 15, 26, 0) 64%);
}
/* 文字区压暗做成"照片自带的暗角"，而不是一条垂直渐变 —— 竖直渐变会让整块图左黑右白、发脏。
   收窄的面板宽度小，整块压下去会发黑，所以按状态调透明度过渡 */
.duo-band__item::before {
    content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none;
    background: radial-gradient(135% 125% at 0% 68%, rgba(5, 15, 26, .82) 0%, rgba(5, 15, 26, .46) 26%, rgba(5, 15, 26, 0) 56%);
    transition: opacity .55s var(--ease);
}
.duo-band__item--b::before {
    background: radial-gradient(135% 125% at 100% 68%, rgba(5, 15, 26, .82) 0%, rgba(5, 15, 26, .46) 26%, rgba(5, 15, 26, 0) 56%);
}
.duo-band__item:not(.is-on)::before { opacity: .78; }
/* 撑开的那张会露出大面积亮部（厂房白墙 / 不锈钢反光），只靠底部压暗兜不住居中的标题，
   再叠一层贴着文字侧的水平渐变，把白色标题的底子彻底压下去 */
.duo-band__item.is-on::after {
    background:
        linear-gradient(to top, rgba(5, 15, 26, .6) 0%, rgba(5, 15, 26, .12) 42%, rgba(5, 15, 26, 0) 68%),
        linear-gradient(96deg, rgba(5, 15, 26, .58) 0%, rgba(5, 15, 26, .3) 26%, rgba(5, 15, 26, .06) 48%, rgba(5, 15, 26, 0) 62%);
}
.duo-band__item--b.is-on::after {
    background:
        linear-gradient(to top, rgba(5, 15, 26, .6) 0%, rgba(5, 15, 26, .12) 42%, rgba(5, 15, 26, 0) 68%),
        linear-gradient(264deg, rgba(5, 15, 26, .58) 0%, rgba(5, 15, 26, .3) 26%, rgba(5, 15, 26, .06) 48%, rgba(5, 15, 26, 0) 62%);
}

/* 两套文案：收窄时居中、撑开后贴外侧，交叉淡入（参考站 orientation_01 / orientation_02 的做法）
   transform 里的 skewX(10deg) 是抵消父级斜切，否则文字会跟着歪成斜体 */
.duo-band__copy {
    position: absolute; top: 52%; z-index: 2;
    width: 74%; color: #fff;
    transition: opacity .45s var(--ease);
}
.duo-band__copy b {
    display: block; margin-bottom: 14px; line-height: 1.32;
    font-size: clamp(20px, 1.8vw, 31px); font-weight: 800; letter-spacing: -.01em;
    text-shadow: 0 1px 2px rgba(5, 15, 26, .92), 0 5px 20px rgba(5, 15, 26, .7), 0 0 48px rgba(5, 15, 26, .45);
}
/* 收窄那张的文案要小一档，否则面板一窄标题就被斜缝切掉 */
.duo-band__copy--idle b { font-size: clamp(16px, 1.42vw, 25px); margin-bottom: 10px; }
.duo-band__copy--idle > span { font-size: clamp(12.5px, .84vw, 15px); }
.duo-band__copy > span {
    display: block; max-width: 460px;
    font-size: clamp(14px, .95vw, 16.5px); line-height: 1.8; font-weight: 500;
    color: rgba(255, 255, 255, .96); text-wrap: balance;
    text-shadow: 0 1px 2px rgba(5, 15, 26, .9), 0 3px 14px rgba(5, 15, 26, .8);
}
.duo-band__go {
    display: grid; place-items: center;
    width: 54px; height: 54px; margin-top: 26px;
    border: 1px solid rgba(255, 255, 255, .5); border-radius: 50%;
    transition: all .4s var(--ease);
}
.duo-band__go svg { width: 17px; height: 17px; color: #fff; }
.duo-band__item:hover .duo-band__go { background: #fff; border-color: #fff; }
.duo-band__item:hover .duo-band__go svg { color: var(--ink); }

/* 第一张：默认撑开，文案贴左 */
.duo-band__item--a .duo-band__copy--idle { left: 50%; transform: translate(-50%, -50%) skewX(10deg); text-align: center; opacity: 1; }
.duo-band__item--a .duo-band__copy--on   { left: calc(8% + var(--bleed)); width: 44%; transform: translateY(-50%) skewX(10deg); text-align: left; opacity: 0; }
.duo-band__item--a.is-on .duo-band__copy--idle { opacity: 0; }
.duo-band__item--a.is-on .duo-band__copy--on   { opacity: 1; transition-delay: .22s; }

/* 第二张：镜像，文案贴右 */
.duo-band__item--b .duo-band__copy--idle { left: 50%; transform: translate(-50%, -50%) skewX(10deg); text-align: center; opacity: 1; }
.duo-band__item--b .duo-band__copy--on   { right: calc(8% + var(--bleed)); width: 44%; transform: translateY(-50%) skewX(10deg); text-align: right; opacity: 0; }
.duo-band__item--b.is-on .duo-band__copy--idle { opacity: 0; }
.duo-band__item--b.is-on .duo-band__copy--on   { opacity: 1; transition-delay: .22s; }
.duo-band__item--b .duo-band__copy > span { margin-left: auto; }
.duo-band__item--b .duo-band__go { margin-left: auto; }

/* 产品中心：左列表 + 右大图（参考站结构） */
.pm { background: #fff; }
.pm__box {
    display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.12fr);
    gap: clamp(28px, 3.4vw, 72px); align-items: center;
}
.pm__list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: clamp(10px, 1.2vw, 26px); }
.pm__item {
    display: grid; grid-template-columns: 48px minmax(0, 1fr); gap: 16px;
    align-items: start;
    padding: 20px 0 20px 0;
    border-bottom: 1px solid rgba(10, 27, 42, .1);
    transition: color .3s var(--ease);
}
/* 编号环：参考站 .cir1/.cir2 —— 灰底环常驻，品牌色环用 stroke-dashoffset 从 0 画满
   r=20.5 → 周长 128.8，active 时 offset 归零即"指针绕一圈" */
.pm__ring {
    position: relative;
    display: grid; place-items: center;
    width: 46px; height: 46px; border-radius: 50%;
    background: rgba(15, 74, 128, 0);
    transition: background .45s var(--ease);
}
.pm__ring svg {
    position: absolute; inset: 0; width: 100%; height: 100%;
    transform: rotate(-90deg); pointer-events: none;
}
.pm__ring circle { fill: none; stroke-width: 1; }
.pm__ring-track { stroke: rgba(10, 27, 42, .16); }
.pm__ring-bar {
    stroke: var(--brand); stroke-width: 1.6; stroke-linecap: round;
    stroke-dasharray: 128.8; stroke-dashoffset: 128.8;
    transition: stroke-dashoffset .9s var(--ease);
}
.pm__ring i {
    font-style: normal; font-family: var(--font-mono);
    font-size: 13px; font-weight: 600; color: var(--muted);
    transition: color .45s var(--ease);
}
.pm__body { display: block; min-width: 0; }
.pm__name {
    display: block; font-size: clamp(15.5px, 1.05vw, 18px); font-weight: 600;
    line-height: 1.45; color: var(--ink); padding-top: 9px;
    transition: color .3s var(--ease);
}
.pm__more { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .45s var(--ease); }
.pm__more > span { min-height: 0; overflow: hidden; display: block; }
.pm__desc {
    display: block; font-size: 13.5px; line-height: 1.7; color: var(--muted);
    margin-top: 10px; max-width: 30ch;
}
/* 展开态的行内 CTA：文字 + 箭头，与新闻列表用同一套"读下去"的语汇 */
.pm__link {
    display: inline-flex; align-items: center; gap: 8px; margin-top: 12px;
    font-size: 13.5px; font-weight: 600; color: var(--brand);
}
.pm__link svg { width: 15px; height: 15px; transition: transform .35s var(--ease); }
.pm__item:hover .pm__link svg { transform: translateX(4px); }
.pm__item.is-active .pm__more { grid-template-rows: 1fr; }
.pm__item.is-active .pm__ring { background: rgba(15, 74, 128, .07); }
.pm__item.is-active .pm__ring-bar { stroke-dashoffset: 0; }
.pm__item.is-active .pm__ring i { color: var(--brand); }
.pm__item.is-active .pm__name { color: var(--brand); }
.pm__item:hover .pm__ring-track { stroke: rgba(15, 74, 128, .4); }
.pm__item:hover .pm__ring i { color: var(--brand); }

.pm__stage {
    position: relative; aspect-ratio: 4 / 3; overflow: hidden;
    /* 中心提亮、四周压暗，让浅灰底有纵深，同时不把白件压灰 */
    background: radial-gradient(circle at 50% 44%, #FBFCFE 0%, #EFF4F9 62%, #E6EDF5 100%);
}
.pm__shot {
    position: absolute; inset: 0; margin: 0;
    display: grid; place-items: center; padding: clamp(8px, 1vw, 18px);
    opacity: 0; transition: opacity .5s var(--ease);
}
.pm__shot.is-active { opacity: 1; }
.pm__shot img {
    width: 100%; height: 100%; object-fit: contain;
    /* 白底产品照与带环境的产品照都靠 multiply 融进浅灰底，避免露出矩形边 */
    mix-blend-mode: multiply;
    transition: transform 1.2s var(--ease);
}
.pm__stage:hover .pm__shot.is-active img { transform: scale(1.045); }

/* 应用领域：深色索引网格 */
.apps-grid {
    display: grid; grid-template-columns: repeat(3, 1fr);
    border-top: 1px solid rgba(255, 255, 255, .12);
    border-left: 1px solid rgba(255, 255, 255, .12);
}
.app {
    position: relative; padding: 34px 32px 38px;
    border-right: 1px solid rgba(255, 255, 255, .12);
    border-bottom: 1px solid rgba(255, 255, 255, .12);
    transition: background .4s var(--ease);
}
.app:hover { background: rgba(255, 255, 255, .045); }
/* 序号与英文小标合成一行"索引行"：01 · RAILWAY。
   原来是两行（序号 / 英文标签），中间夹着标题，把卡片撑得又高又散 */
.app__meta {
    display: flex; align-items: center; gap: 9px; padding-right: 30px;
    font-size: 11px; letter-spacing: .18em; text-transform: uppercase;
    color: rgba(255, 255, 255, .4);
}
.app__meta b {
    font-family: var(--font-mono); font-size: 12.5px; font-weight: 600;
    letter-spacing: .04em; color: var(--accent);
}
.app__meta b::after {
    content: ""; display: inline-block; vertical-align: middle;
    width: 18px; height: 1px; margin-left: 9px;
    background: rgba(255, 255, 255, .22);
}
.app h3 { color: #fff; font-size: clamp(20px, 1.7vw, 25px); margin: 14px 0 0; }
.app p {
    margin: 14px 0 0; font-size: 14.5px; line-height: 1.75;
    color: rgba(255, 255, 255, .56); text-wrap: pretty;
}
.app svg {
    position: absolute; top: 34px; right: 30px; width: 17px; height: 17px;
    color: rgba(255, 255, 255, .22); transition: all .3s var(--ease);
}
.app:hover svg { color: var(--accent); transform: translateX(3px); }

/* 分类切换：下划线标签 */
.filter-bar {
    display: flex; flex-wrap: wrap; align-items: center;
    gap: 0; margin-bottom: 36px; border-bottom: 1px solid var(--line);
}
.filter-bar button,
.filter-bar a {
    padding: 14px 20px; margin-bottom: -1px;
    font-size: 15px; font-weight: 500; color: var(--muted);
    border: 0; border-bottom: 2px solid transparent; border-radius: 0;
    background: none; transition: color .25s var(--ease), border-color .25s var(--ease);
}
.filter-bar button:first-child,
.filter-bar a:first-child { padding-left: 0; }
.filter-bar button:hover,
.filter-bar a:hover { color: var(--ink); }
.filter-bar button.is-active,
.filter-bar a.is-active { color: var(--ink); border-bottom-color: var(--accent); font-weight: 600; background: none; }

/* 产品卡片 */
.product-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: clamp(16px, 1.4vw, 30px); }
.product-card {
    background: #fff; border: 1px solid var(--line);
    transition: all .35s var(--ease);
    display: flex; flex-direction: column; overflow: hidden;
}
.product-card__media {
    aspect-ratio: 4 / 3; background: #fff; overflow: hidden; position: relative;
    display: grid; place-items: center; padding: 0;
}
.product-card__media img {
    width: 100%; height: 100%; object-fit: contain;
    transition: transform .5s var(--ease);
}
.product-card:hover .product-card__media img { transform: scale(1.06); }
.product-card__body {
    padding: 22px 24px 26px; border-top: 1px solid var(--line-2);
    display: flex; flex-direction: column; flex: 1;
}
.product-card__title {
    font-size: 17.5px; font-weight: 700; color: var(--ink);
    display: flex; align-items: center; justify-content: space-between; gap: 10px;
}
.product-card__title svg { width: 15px; height: 15px; color: var(--accent); opacity: 0; transform: translateX(-6px); transition: all .3s var(--ease); flex-shrink: 0; }
.product-card__en {
    display: block; font-size: 12px; color: var(--muted-2); margin-top: 8px;
    letter-spacing: .06em; text-transform: uppercase; line-height: 1.5;
    min-height: 2.6em;
}
.product-card:hover { border-color: var(--brand-2); box-shadow: var(--shadow-md); transform: translateY(-4px); }
.product-card:hover .product-card__title svg { opacity: 1; transform: none; }

/* 关于我们：左文 + 右侧圆形厂区图 + 压边白色数据条 */
.about-v2 { position: relative; overflow: hidden; background: var(--bg-soft); }
.about-v2__grid {
    display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.02fr);
    gap: clamp(36px, 4.6vw, 96px); align-items: center;
}
.about-v2__text { padding-bottom: clamp(20px, 3vw, 44px); }
.about-v2__lead {
    font-size: clamp(16px, 1.15vw, 19px); line-height: 1.8;
    color: var(--ink); font-weight: 600; margin: 0 0 14px;
}
.about-v2__body { color: var(--muted); font-size: 15.5px; line-height: 1.95; margin: 0 0 30px; max-width: 54ch; }
.about-figure { position: relative; margin: 0; z-index: 1; }
.about-figure__disc {
    display: block; position: relative;
    aspect-ratio: 1 / 1; border-radius: 50%; overflow: hidden;
    background: var(--bg-soft);
}
.about-figure__disc img {
    width: 100%; height: 100%; object-fit: cover; object-position: center 46%;
    transition: transform 1.6s var(--ease);
}
.about-figure:hover img { transform: scale(1.045); }
/* 圆外的细线环，参考站同款 */
.about-figure::after {
    content: ""; position: absolute; inset: clamp(-26px, -2vw, -18px);
    border: 1px solid var(--line); border-radius: 50%;
    pointer-events: none;
}

/* 压边数据条：白色实体条，右侧圆形图向下压住它 */
.about-stats {
    position: relative; z-index: 3;
    display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
    margin-top: clamp(-140px, -7.6vw, -56px);
    background: #fff;
    padding: clamp(26px, 2.4vw, 42px) clamp(20px, 2.6vw, 52px);
    box-shadow: 0 26px 60px rgba(10, 27, 42, .1);
}
.stat { padding-left: clamp(16px, 2vw, 42px); border-left: 1px solid var(--line); }
.stat:first-child { border-left: 0; padding-left: 0; }
.stat__num {
    display: flex; align-items: baseline; gap: 5px;
    font-family: var(--font-mono); font-variant-numeric: tabular-nums;
    font-size: clamp(32px, 3.1vw, 48px); font-weight: 700; line-height: 1;
    color: var(--brand); letter-spacing: -.03em;
}
.stat__num em {
    font-style: normal; font-size: .38em; font-weight: 700;
    letter-spacing: 0; opacity: .8;
}
/* 标签按参考站用深色加粗，比灰色小字更像"指标名"而不是注释 */
.stat__label {
    display: block; margin-top: 12px;
    font-size: 13.5px; font-weight: 600; letter-spacing: .01em;
    color: rgba(10, 27, 42, .62);
}

.about-points { margin: 26px 0 32px; display: grid; gap: 12px; }
.about-points li { display: flex; gap: 12px; align-items: flex-start; font-size: 15.5px; color: var(--text); }
.about-points svg { width: 18px; height: 18px; color: var(--accent); flex-shrink: 0; margin-top: 4px; }

/* 设备横向滚动 */
.scroll-strip {
    display: grid; grid-auto-flow: column; grid-auto-columns: 340px;
    gap: 18px; overflow-x: auto; padding-bottom: 14px;
    scroll-snap-type: x mandatory; scrollbar-width: thin;
}
.scroll-strip::-webkit-scrollbar { height: 4px; }
.scroll-strip::-webkit-scrollbar-thumb { background: var(--line); }
.scroll-strip__item { scroll-snap-align: start; }
.scroll-strip__item figure { margin: 0; overflow: hidden; background: #fff; border: 1px solid var(--line); }
.scroll-strip__item img { width: 100%; height: 250px; object-fit: cover; transition: transform .5s var(--ease); }
.scroll-strip__item:hover img { transform: scale(1.05); }
.scroll-strip__item figcaption {
    padding: 12px 14px; font-size: 13px; color: var(--muted);
    border-top: 1px solid var(--line-2);
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

/* 新闻：左图随右侧条目切换，右侧为折叠列表（同一时刻只展开一条） */
.news-v2 { display: grid; grid-template-columns: minmax(0, 1.06fr) minmax(0, 1fr); gap: clamp(28px, 4vw, 76px); align-items: start; }
.news-v2__media { position: relative; aspect-ratio: 4 / 3; overflow: hidden; background: var(--bg-soft); }
.news-v2__shot { position: absolute; inset: 0; opacity: 0; transition: opacity .5s var(--ease); }
.news-v2__shot.is-active { opacity: 1; }
.news-v2__shot img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.4s var(--ease); }
.news-v2__shot.is-active:hover img { transform: scale(1.04); }
.news-v2__list { display: flex; flex-direction: column; }
.news-v2__item { display: block; border-bottom: 1px solid var(--line); padding: clamp(16px, 1.4vw, 24px) 0; }
.news-v2__item:first-child { padding-top: 0; }
.news-v2__row { display: flex; align-items: flex-start; justify-content: space-between; gap: 24px; }
.news-v2__item h4 {
    font-size: clamp(16px, 1.1vw, 19px); line-height: 1.5; margin: 0;
    transition: color .3s var(--ease);
}
.news-v2__item time {
    font-family: var(--font-mono); font-size: 12.5px; color: var(--muted-2);
    white-space: nowrap; padding-top: 4px;
}
.news-v2__more { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .45s var(--ease); }
.news-v2__more > span { min-height: 0; overflow: hidden; display: block; }
.news-v2__desc { display: block; font-size: 14.5px; line-height: 1.7; color: var(--muted); margin-top: 10px; max-width: 52ch; }
.news-v2__item.is-active .news-v2__more { grid-template-rows: 1fr; }
.news-v2__item.is-active h4 { color: var(--brand); }
.news-v2__item:hover h4 { color: var(--brand); }
/* 展开态的行内 CTA：文字 + 箭头，比一个孤零零的蓝圆点更像是"读下去"的邀请 */
.news-v2__read {
    display: inline-flex; align-items: center; gap: 8px;
    margin-top: 14px; font-size: 13px; font-weight: 600; color: var(--brand);
}
.news-v2__read svg { width: 15px; height: 15px; transition: transform .35s var(--ease); }
.news-v2__item:hover .news-v2__read svg { transform: translateX(4px); }

/* 设备：四列网格 */
.equip-band { background: #fff; border-top: 1px solid var(--line-2); }
.eq-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: clamp(14px, 1.4vw, 26px); }
.eq-card figure { margin: 0; position: relative; overflow: hidden; background: var(--bg-soft); }
.eq-card img {
    width: 100%; aspect-ratio: 4 / 3; object-fit: cover; display: block;
    transition: transform 1s var(--ease);
}
.eq-card:hover img { transform: scale(1.05); }
.eq-card figcaption {
    position: absolute; left: 0; right: 0; bottom: 0;
    padding: 26px 20px 16px; color: #fff; font-size: 14.5px; font-weight: 500;
    background: linear-gradient(to top, rgba(6, 18, 30, .82), rgba(6, 18, 30, 0));
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

/* 合作伙伴：细长条，不占整屏
   13 家 logo 用 7 列会剩 6 个 —— 用 flex + justify-content:center 让末行自动居中，
   比 grid 固定 8 列留下 8+3 的缺口整齐得多 */
.partner-band { background: var(--bg-soft); padding: clamp(28px, 2.6vw, 42px) 0 clamp(32px, 3vw, 48px); }
.partner-band__inner { display: block; }
/* 标签单独占一行 + 一条延伸到右边的细线：原来把标签塞在 logo 左边、
   垂直居中，读起来像一句走丢的孤立文字 */
.partner-band__head { display: flex; align-items: center; gap: 18px; margin-bottom: clamp(16px, 1.7vw, 24px); }
.partner-band__head::after { content: ""; flex: 1; height: 1px; background: var(--line); }
.partner-band__label {
    flex-shrink: 0; font-size: 12.5px; font-weight: 700; letter-spacing: .2em;
    text-transform: uppercase; color: var(--muted-2);
}
.partner-band__list {
    --pgap: clamp(10px, 1.4vw, 24px);
    display: flex; flex-wrap: wrap; justify-content: center; align-items: center;
    gap: var(--pgap);
}
.partner-band__list a {
    flex: 0 0 calc((100% - var(--pgap) * 6) / 7);
    display: grid; place-items: center; height: 60px; padding: 6px;
}
/* multiply 必须挂在 img 上：一旦给 <a> 加 filter/opacity，就会新建层叠上下文，
   img 的 multiply 只在空背景里混合 —— logo 自带的白色方底就重新露出来，
   整条变成一排大小不一的"白贴纸"。灰度与透明度也一并下放到 img */
.partner-band__list img {
    max-height: 44px; max-width: 100%; object-fit: contain;
    mix-blend-mode: multiply;
    filter: grayscale(1) contrast(1.02);
    opacity: .62;
    transition: filter .3s var(--ease), opacity .3s var(--ease);
}
.partner-band__list a:hover img { filter: none; opacity: 1; }
/* 合作伙伴 */
.partner-grid {
    display: grid; grid-template-columns: repeat(7, 1fr);
    border-top: 1px solid var(--line); border-left: 1px solid var(--line);
}
.partner-grid a {
    border-right: 1px solid var(--line); border-bottom: 1px solid var(--line);
    height: 104px; display: grid; place-items: center; padding: 18px;
    filter: grayscale(1); opacity: .62; transition: all .3s var(--ease);
}
.partner-grid a:hover { filter: none; opacity: 1; background: #fff; }
.partner-grid img { max-height: 46px; max-width: 100%; object-fit: contain; }

/* CTA 条 */
.cta-band { background: var(--ink); color: #fff; position: relative; overflow: hidden; }
/* 暖色光晕改成分层椭圆并整体压淡：单一大圆在深底上会出现一道明显的弧线"接缝" */
.cta-band::before {
    content: ""; position: absolute; right: -180px; top: -140px;
    width: 620px; height: 620px; border-radius: 50%;
    background: radial-gradient(circle, rgba(228, 87, 46, .2) 0%, rgba(228, 87, 46, .07) 44%, rgba(228, 87, 46, 0) 70%);
    filter: blur(6px);
}
.cta-band__inner {
    position: relative; z-index: 2;
    display: flex; align-items: center; justify-content: space-between; gap: 40px;
    padding-top: clamp(56px, 5.5vw, 92px); padding-bottom: clamp(56px, 5.5vw, 92px);
}
.cta-band h2 { color: #fff; font-size: clamp(26px, 2.6vw, 44px); margin-bottom: 14px; }
.cta-band p { color: rgba(255, 255, 255, .66); margin: 0; font-size: 16.5px; max-width: 640px; }
.cta-band__actions { display: flex; gap: 14px; flex-shrink: 0; }

/* ============================================================
   内页
   ============================================================ */
.page-hero {
    position: relative; background: var(--ink); color: #fff;
    padding: clamp(88px, 8vw, 148px) 0 clamp(64px, 6.5vw, 112px); overflow: hidden;
}
.page-hero__bg {
    position: absolute; left: 0; right: 0; top: -10%; bottom: -10%;
    transform: translate3d(0, var(--py, 0px), 0);
}
.page-hero__bg img { width: 100%; height: 100%; object-fit: cover; opacity: .24; }
.page-hero__bg::after {
    content: ""; position: absolute; inset: 0;
    background: linear-gradient(100deg, rgba(8, 24, 38, .95), rgba(8, 24, 38, .72));
}
.page-hero__inner { position: relative; z-index: 2; }
.page-hero__eyebrow { font-size: 12.5px; font-weight: 700; letter-spacing: .22em; color: var(--accent); text-transform: uppercase; }
.page-hero h1 { color: #fff; font-size: clamp(30px, 3.2vw, 52px); margin: 12px 0 0; letter-spacing: -.01em; }
.breadcrumb {
    display: flex; flex-wrap: wrap; align-items: center; gap: 8px;
    font-size: 13px; color: rgba(255, 255, 255, .6); margin-bottom: 22px;
}
.breadcrumb a:hover { color: #fff; }
.breadcrumb i { font-style: normal; opacity: .5; }

.layout { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 56px; padding: clamp(48px, 5vw, 84px) 0 clamp(64px, 6vw, 104px); }
.layout--full { grid-template-columns: minmax(0, 1fr); }

/* 侧栏 */
.sidebar { display: grid; gap: 26px; align-content: start; }
.panel { border: 1px solid var(--line); background: #fff; }
.panel__head {
    padding: 18px 22px; border-bottom: 1px solid var(--line-2);
    display: flex; align-items: baseline; justify-content: space-between;
}
.panel__head h3 { font-size: 16px; }
.panel__head span { font-size: 10.5px; letter-spacing: .16em; color: var(--muted-2); text-transform: uppercase; }
.panel__body { padding: 10px 0; }
.side-menu li a {
    display: flex; align-items: center; justify-content: space-between;
    padding: 12px 22px; font-size: 14px; color: var(--text);
    border-left: 3px solid transparent; transition: all .25s var(--ease);
}
.side-menu li a:hover { background: var(--bg-soft); color: var(--brand); border-left-color: var(--brand-2); }
.side-menu li a.is-active { background: var(--brand-soft); color: var(--brand); border-left-color: var(--brand); font-weight: 600; }
.side-menu li a svg { width: 13px; height: 13px; opacity: .4; }

.panel--cta { background: var(--ink); color: #fff; border: 0; padding: 26px 24px; }
.panel--cta h3 { color: #fff; font-size: 18px; margin-bottom: 8px; }
.panel--cta p { font-size: 13px; color: rgba(255, 255, 255, .66); margin-bottom: 18px; }
.panel--cta .btn { width: 100%; justify-content: center; }

/* 列表/网格 */
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.gallery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.gallery-item {
    border: 1px solid var(--line); background: #fff; overflow: hidden;
    display: block;
}
.gallery-item__media { aspect-ratio: 4 / 3; overflow: hidden; display: grid; place-items: center; padding: 14px; }
.gallery-item__media img { max-width: 100%; max-height: 100%; object-fit: contain; transition: transform .5s var(--ease); }
.gallery-item:hover .gallery-item__media img { transform: scale(1.05); }
.gallery-item__cap { padding: 12px 16px; border-top: 1px solid var(--line-2); font-size: 13.5px; color: var(--text); }
.gallery-item--photo .gallery-item__media { padding: 0; aspect-ratio: 4 / 3; }
.gallery-item--photo .gallery-item__media img { width: 100%; height: 100%; object-fit: cover; }

/* 新闻列表页 */
.article-list__item {
    display: grid; grid-template-columns: 220px 1fr; gap: 28px;
    padding: 26px 0; border-bottom: 1px solid var(--line);
    align-items: center;
}
.article-list__item:first-child { padding-top: 0; }
.article-list__thumb { aspect-ratio: 16 / 10; overflow: hidden; background: var(--bg-soft); }
.article-list__thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s var(--ease); }
.article-list__item:hover .article-list__thumb img { transform: scale(1.05); }
.article-list__meta { font-size: 12px; color: var(--muted-2); letter-spacing: .04em; margin-bottom: 8px; display: flex; gap: 14px; }
.article-list__meta b { color: var(--accent); font-weight: 700; }
.article-list__item h3 { font-size: 18px; margin-bottom: 8px; line-height: 1.5; }
.article-list__item:hover h3 { color: var(--brand); }
.article-list__item p { font-size: 13.5px; color: var(--muted); margin: 0; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* 分页 */
.pagination, .pages_bar { margin-top: 42px; display: flex; flex-wrap: wrap; gap: 8px; align-items: center; justify-content: center; }
.pagination a, .pagination span, .pagination em,
.pages_bar a, .pages_bar span, .pages_bar em {
    display: inline-flex; align-items: center; justify-content: center;
    min-width: 38px; height: 38px; padding: 0 12px;
    border: 1px solid var(--line); border-radius: var(--radius);
    font-size: 13.5px; font-style: normal; color: var(--muted); background: #fff;
    transition: all .25s var(--ease);
}
.pagination a:hover, .pages_bar a:hover { border-color: var(--brand); color: var(--brand); }
.pagination .current, .pagination .active,
.pages_bar .current, .pages_bar .active { background: var(--brand); border-color: var(--brand); color: #fff; font-weight: 600; }
.pagination .disabled, .pages_bar .disabled { opacity: .4; }
.pages_bar .rows, .pagination .rows { border: 0; background: none; padding: 0 6px; color: var(--muted-2); }

/* 详情正文 */
.detail-head { border-bottom: 1px solid var(--line); padding-bottom: 24px; margin-bottom: 32px; }
.detail-head h1 { font-size: clamp(26px, 2.4vw, 36px); line-height: 1.35; margin-bottom: 16px; }
.detail-meta { display: flex; flex-wrap: wrap; gap: 18px; font-size: 12.5px; color: var(--muted); }
.detail-meta span { display: inline-flex; align-items: center; gap: 6px; }
.detail-meta svg { width: 14px; height: 14px; opacity: .6; }
.detail-body { font-size: 15px; line-height: 1.95; color: #2C3A47; }
.detail-body p { margin: 0 0 1.1em; }
/* 兼容后台富文本里的 Word 内联样式：去掉残留高亮底色、统一字体，保持版式统一 */
.detail-body [style*="background"] { background-color: transparent !important; }
.detail-body [style*="font-family"] { font-family: inherit !important; }
.detail-body a { color: var(--brand); text-decoration: underline; text-underline-offset: 2px; }
.detail-body img { max-width: 100%; height: auto; display: block; margin: 18px auto; border-radius: 2px; }
.detail-body h3, .detail-body h4 { margin: 1.6em 0 .6em; }
.detail-body ul, .detail-body ol { margin: 0 0 1.1em; padding-left: 1.4em; list-style: revert; }
.detail-body li { margin-bottom: .4em; }
.detail-body table { width: 100%; border-collapse: collapse; margin: 18px 0; font-size: 14px; }
.detail-body th, .detail-body td { border: 1px solid var(--line); padding: 10px 14px; text-align: left; }
.detail-body th { background: var(--bg-soft); font-weight: 600; }
.detail-body blockquote {
    margin: 20px 0; padding: 16px 20px; background: var(--bg-soft);
    border-left: 3px solid var(--brand-2); color: var(--muted);
}
.detail-note {
    margin-top: 30px; padding: 16px 20px; background: var(--accent-soft);
    border-radius: var(--radius); font-size: 13.5px; color: #9A3B1C;
}
.detail-nav {
    margin-top: 44px; padding-top: 24px; border-top: 1px solid var(--line);
    display: grid; gap: 12px; font-size: 14px;
}
.detail-nav a { color: var(--muted); display: flex; gap: 10px; }
.detail-nav a:hover { color: var(--brand); }
.detail-nav b { color: var(--ink); font-weight: 600; flex-shrink: 0; }

/* 联系页 */
.contact-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.contact-item {
    display: flex; gap: 16px; padding: 24px; border: 1px solid var(--line);
    background: #fff; align-items: flex-start;
}
.contact-item__icon {
    width: 44px; height: 44px; flex-shrink: 0; display: grid; place-items: center;
    background: var(--brand-soft); color: var(--brand); border-radius: var(--radius);
}
.contact-item__icon svg { width: 20px; height: 20px; }
.contact-item h4 { font-size: 13px; color: var(--muted); font-weight: 600; margin-bottom: 4px; letter-spacing: .02em; }
.contact-item p { margin: 0; font-size: 15px; color: var(--ink); font-weight: 600; overflow-wrap: anywhere; }
.contact-map { margin-top: 28px; border: 1px solid var(--line); }
.contact-map img { width: 100%; display: block; }

/* 空状态 */
.empty-state { padding: 70px 20px; text-align: center; color: var(--muted-2); }
.empty-state svg { width: 46px; height: 46px; opacity: .35; margin-bottom: 14px; }

/* 灯箱 */
.lightbox {
    position: fixed; inset: 0; z-index: 300; background: rgba(6, 18, 30, .9);
    display: none; align-items: center; justify-content: center; padding: 40px;
}
.lightbox.is-open { display: flex; animation: fadeIn .25s var(--ease); }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.lightbox img { max-width: 92vw; max-height: 86vh; object-fit: contain; box-shadow: var(--shadow-lg); }
.lightbox__close {
    position: absolute; top: 24px; right: 28px; color: #fff; font-size: 30px;
    line-height: 1; opacity: .7;
}
.lightbox__close:hover { opacity: 1; }

/* ============================================================
   页脚
   ============================================================ */
.footer { background: var(--bg-dark); color: rgba(255, 255, 255, .6); font-size: 14.5px; }
.footer__main {
    display: grid; grid-template-columns: 1.7fr 1fr 1fr 1.3fr; gap: 56px;
    padding: clamp(52px, 5vw, 80px) 0 clamp(44px, 4vw, 64px);
}
.footer__brand h3 { color: #fff; font-size: 19px; line-height: 1.5; margin-bottom: 6px; }
.footer__brand .en {
    display: block; font-size: 10.5px; letter-spacing: .16em; color: rgba(255, 255, 255, .38);
    text-transform: uppercase; margin-bottom: 18px;
}
.footer__brand p { color: rgba(255, 255, 255, .52); line-height: 1.85; margin: 0; max-width: 320px; }
.footer h4 { color: #fff; font-size: 15px; margin-bottom: 20px; letter-spacing: .02em; }
.footer__links li { margin-bottom: 11px; }
.footer__links a:hover { color: #fff; }
.footer__contact li { display: flex; gap: 12px; margin-bottom: 14px; line-height: 1.7; }
.footer__contact svg { width: 15px; height: 15px; flex-shrink: 0; margin-top: 5px; opacity: .55; }
.footer__contact b { color: #fff; font-weight: 600; }
.footer__tel { font-size: 26px; font-weight: 800; color: #fff; letter-spacing: .01em; line-height: 1.3; }
.footer__bottom {
    border-top: 1px solid rgba(255, 255, 255, .1);
    padding: 20px 0; display: flex; flex-wrap: wrap; gap: 12px;
    align-items: center; justify-content: space-between;
    font-size: 12.5px; color: rgba(255, 255, 255, .42);
}
.footer__bottom a:hover { color: rgba(255, 255, 255, .8); }

/* 返回顶部 */
.to-top {
    position: fixed; right: 26px; bottom: 26px; z-index: 80;
    width: 46px; height: 46px; border-radius: 50%;
    background: var(--brand); color: #fff; display: grid; place-items: center;
    box-shadow: var(--shadow-md);
    opacity: 0; visibility: hidden; transform: translateY(10px);
    transition: all .3s var(--ease);
}
.to-top.is-show { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { background: var(--accent); }
.to-top svg { width: 18px; height: 18px; }

/* 英文环境下隐藏与主标题重复的英文副标题 */
html[lang="en"] .adv-row h3 span,
html[lang="en"] .product-card__en,
html[lang="en"] .footer__brand .en,
html[lang="en"] .panel__head > span,
/* 英文页面标题本身就是英文，索引行里再出现一遍 "RAILWAY" 是重复的，只留序号 */
html[lang="en"] .app__meta i { display: none; }
.app__meta i { font-style: normal; }

/* ---------- 顶部动态：滚动进度条 / 吸顶收窄 ---------- */
.scroll-progress {
    position: fixed; left: 0; top: 0; width: 100%; height: 2px;
    background: var(--accent); z-index: 260;
    transform: scaleX(0); transform-origin: 0 50%;
    will-change: transform; pointer-events: none;
}
.header__inner { transition: height .35s var(--ease); }
.logo img { transition: width .35s var(--ease); }
@media (min-width: 992px) {
    .site-header.is-stuck .header__inner { height: 78px; }
    .site-header.is-stuck .logo img { width: 226px; }
}

/* ---------- 首屏入场 ---------- */
@keyframes heroUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: none; } }
@keyframes heroFade { from { opacity: 0; } to { opacity: 1; } }
@keyframes heroZoom { from { transform: scale(1.07); } to { transform: scale(1); } }
@media (prefers-reduced-motion: no-preference) {
    .hero__text > * { animation: heroUp 1s var(--ease) both; }
    .hero__text > *:nth-child(1) { animation-delay: .10s; }
    .hero__text > *:nth-child(2) { animation-delay: .18s; }
    .hero__text > *:nth-child(3) { animation-delay: .26s; }
    .hero__text > *:nth-child(4) { animation-delay: .34s; }
    .hero__text > *:nth-child(5) { animation-delay: .42s; }
    .hero__text > *:nth-child(6) { animation-delay: .50s; }
    .hero__index a { animation: heroFade .85s var(--ease) both; }
    .hero__index a:nth-child(1) { animation-delay: .55s; }
    .hero__index a:nth-child(2) { animation-delay: .62s; }
    .hero__index a:nth-child(3) { animation-delay: .69s; }
    .hero__index a:nth-child(4) { animation-delay: .76s; }
    .hero__index a:nth-child(5) { animation-delay: .83s; }
    .hero__bg img { animation: heroZoom 26s ease-out both; }
}

/* 滚动入场动画 */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
    .reveal { opacity: 1; transform: none; transition: none; }
    html { scroll-behavior: auto; }
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1180px) {
    .nav__list > li > a { padding: 0 12px; font-size: 14px; }
    .product-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .partner-grid { grid-template-columns: repeat(5, 1fr); }
    .pillars { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    /* 三列在 1024 只剩 315px 一格，说明会被折成"套。"这种孤字，直接降到两列 */
    .apps-grid { grid-template-columns: repeat(2, 1fr); }
    .partner-band__list a { flex: 0 0 calc((100% - var(--pgap) * 5) / 6); }
}

@media (max-width: 1120px) {
    .hero__inner { grid-template-columns: minmax(0, 1fr) minmax(0, .78fr); gap: 16px; }
    .hero__text { max-width: min(560px, 56vw); }
    .hero__cluster { max-width: 420px; }
    .hero::after {
        background:
            linear-gradient(90deg, rgba(6, 18, 30, .95) 0%, rgba(6, 18, 30, .82) 55%, rgba(6, 18, 30, .66) 100%),
            linear-gradient(to top, rgba(6, 18, 30, .92), rgba(6, 18, 30, 0) 52%);
    }
    .nav { display: none; }
    .nav-toggle { display: grid; }
    .header__inner { height: 78px; }
    .logo img { width: 230px; }
    .pm__box { grid-template-columns: minmax(0, 1fr); gap: 32px; }
    .pm__stage { order: -1; aspect-ratio: 16 / 10; }
    .eq-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 991px) {
    .topbar__left { gap: 14px; }
    .topbar__item:nth-child(2) { display: none; }
    .nav { display: none; }
    .nav-toggle { display: grid; }
    .header__inner { height: 78px; }
    .logo img { width: 230px; }
    .hero__inner { min-height: calc(100vh - 122px); padding-top: 64px; padding-bottom: 64px; grid-template-columns: minmax(0, 1fr); }
    .hero__cluster { display: none; }
    .hero__text { max-width: none; }
    .hero__title { font-size: clamp(28px, 5.2vw, 44px); }
    .spec-strip__inner { grid-template-columns: repeat(2, 1fr); }
    .spec { padding: 22px 0 22px 22px; }
    .spec:nth-child(odd) { border-left: 0; padding-left: 0; }
    .spec:nth-child(-n+2) { border-bottom: 1px solid rgba(255, 255, 255, .1); }
    .section { padding: 58px 0; }
    /* 双图：竖排，取消斜切与撑大（触屏没有 hover） */
    .duo-band__track { display: block; width: 100%; margin-left: 0; }
    .duo-band__item {
        transform: none; margin: 0 0 10px; height: 56vw; min-height: 300px; max-height: 460px;
    }
    .duo-band__item.is-on { flex-grow: 1; }
    .duo-band__media {
        top: 0; height: 100%; left: 0; width: 100%; margin-left: 0; transform: none;
    }
    .duo-band__copy--on { display: none; }
    /* 手机上压到图片底部，靠底部渐变托住文字，比压在画面中部的亮区好读 */
    .duo-band__copy--idle {
        display: block !important; opacity: 1 !important;
        top: auto !important; bottom: 24px !important;
        width: 84% !important; left: 8% !important;
        transform: none !important; text-align: left !important;
    }
    .duo-band__item--b .duo-band__copy--idle {
        left: auto !important; right: 8% !important; text-align: right !important;
    }
    /* 竖排后每张都是"当前项"，不该按收窄态减淡暗角 */
    .duo-band__item::before,
    .duo-band__item:not(.is-on)::before { opacity: .92; }
    .duo-band__item::after { background: linear-gradient(to top, rgba(5, 15, 26, .9) 0%, rgba(5, 15, 26, .55) 42%, rgba(5, 15, 26, 0) 78%); }
    .apps-grid { grid-template-columns: repeat(2, 1fr); }
    .app { padding: 26px 22px 30px; }
    .section-head h2 { font-size: 27px; }
    .section-head--row { align-items: flex-start; }
    .section-head__more { position: static; display: inline-flex; margin-top: 14px; }
    .about-v2__grid { grid-template-columns: 1fr; gap: 34px; }
    .about-v2__text { padding-bottom: 0; }
    .about-figure { max-width: 460px; margin: 0 auto; }
    .about-figure::after { inset: -14px; }
    .about-stats { margin-top: 40px; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 26px 0; }
    .stat { padding-left: 22px; }
    .stat:nth-child(odd) { border-left: 0; padding-left: 0; }
    .news-v2 { grid-template-columns: 1fr; gap: 28px; }
    .news-v2__media { aspect-ratio: 16 / 9; }
    .partner-band__list a { flex: 0 0 calc((100% - var(--pgap) * 3) / 4); }
    .layout { grid-template-columns: 1fr; gap: 36px; padding: 40px 0 64px; }
    .sidebar { order: 2; }
    .card-grid, .gallery-grid { grid-template-columns: repeat(2, 1fr); }
    .cta-band__inner { flex-direction: column; align-items: flex-start; padding-top: 44px; padding-bottom: 44px; }
    .footer__main { grid-template-columns: repeat(2, 1fr); gap: 34px; padding: 48px 0 36px; }
}

@media (max-width: 640px) {
    :root { --gutter: 18px; }
    /* 手机上两列只有 170px 一格，"NATURAL GAS" 这种长标签会跟右上角箭头撞在一起 */
    .apps-grid { grid-template-columns: 1fr; }
    .app { padding: 26px 20px 28px; }
    .app__meta { padding-right: 30px; }
    body { font-size: 14.5px; }
    .topbar { font-size: 11.5px; }
    .topbar__inner { height: 34px; }
    .topbar__left { gap: 12px; }
    .topbar__left .topbar__item:nth-child(n+2) { display: none; }
    .topbar__right { gap: 10px; }
    .topbar__right .topbar__item { display: none; }
    .lang-switch a { font-size: 11.5px; padding: 2px 5px; }
    .header__inner { height: 62px; gap: 8px; }
    .logo img { width: 168px; }
    .header__actions { gap: 4px; }
    .header__actions .btn--primary { display: none; }
    .icon-btn { width: 36px; height: 36px; }
    .hero__inner { min-height: 0; min-height: calc(100svh - 96px); padding-top: 48px; padding-bottom: 44px; }
    .hero__bg img { object-position: 38% center; }
    .section-head--row .btn { width: 100%; justify-content: center; }
    .hero__title { font-size: clamp(25px, 6.9vw, 30px); letter-spacing: -.02em; }
    .hero__tags { margin-top: 28px; }
    .hero__sub { font-size: 15px; }
    .hero__desc { font-size: 14.5px; margin-bottom: 28px; }
    .hero__actions .btn { flex: 1; justify-content: center; }
    .hero__eyebrow { font-size: 9.5px; letter-spacing: .1em; gap: 10px; }
    .hero__eyebrow::before { width: 26px; }
    .spec { padding: 20px 0 20px 18px; }
    .spec-strip--inline { padding: 0 14px; }
    .spec-strip--inline .spec__num { font-size: 24px; }
    .spec__num { font-size: 26px; }
    .spec__num em { font-size: 13px; }
    .spec__label { font-size: 10.5px; letter-spacing: .1em; margin-top: 8px; }
    .section { padding: 52px 0; }
    .section-head { margin-bottom: 30px; }
    .section-head h2 { font-size: 23px; }
    .section-head p { font-size: 13.5px; }
    .adv-row { padding: 24px 0; gap: 4px 16px; grid-template-columns: 38px 1fr; }
    .adv-row h3 { font-size: 18px; }
    .adv-row p { font-size: 13.5px; line-height: 1.75; margin-top: 10px; }
    .pillars { grid-template-columns: 1fr; gap: 12px; }
    .pillar { display: grid; grid-template-columns: 46px minmax(0, 1fr); gap: 4px 16px; text-align: left; padding: 22px 20px; }
    .pillar::before { display: none; }
    .pillar__icon { grid-row: 1 / span 2; width: 36px; height: 36px; margin: 2px 0 0; }
    .pillar h3 { font-size: 16.5px; margin: 0; align-self: center; }
    .pillar p { font-size: 13.5px; grid-column: 2; }
    .pm__list { grid-template-columns: 1fr; }
    .pm__item { padding: 15px 0; grid-template-columns: 40px minmax(0, 1fr); gap: 14px; }
    .pm__ring { width: 38px; height: 38px; }
    .pm__name { font-size: 15px; padding-top: 7px; }
    .pm__stage { aspect-ratio: 4 / 3; }
    .about-stats { padding: 22px 18px; gap: 22px 0; }
    .stat__num { font-size: 26px; }
    .stat__label { font-size: 12.5px; margin-top: 6px; }
    .news-v2__item h4 { font-size: 15px; }
    .news-v2__item time { font-size: 11px; }
    .partner-band__list a { flex: 0 0 calc((100% - var(--pgap) * 2) / 3); height: 56px; }
    .duo-band__item { height: 320px; min-height: 0; }
    .product-grid, .card-grid, .gallery-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .product-card__body { padding: 12px 14px 14px; }
    .product-card__title { font-size: 13.5px; }
    .product-card__en { font-size: 10.5px; }
    .product-card__media { padding: 8px; }
    .filter-bar {
        flex-wrap: nowrap; overflow-x: auto; gap: 0; margin-bottom: 22px;
        scrollbar-width: none; -webkit-overflow-scrolling: touch;
    }
    .filter-bar::-webkit-scrollbar { display: none; }
    .filter-bar button { padding: 10px 14px; font-size: 13px; white-space: nowrap; }
    .partner-grid { grid-template-columns: repeat(3, 1fr); }
    .partner-grid a { height: 84px; }
    .news-feature img { height: 200px; }
    .news-feature h3 { font-size: 17px; }
    .news-list__item { grid-template-columns: 1fr auto; gap: 14px; }
    .article-list__item { grid-template-columns: 1fr; gap: 14px; }
    .article-list__thumb { aspect-ratio: 16 / 9; }
    .contact-grid { grid-template-columns: 1fr; gap: 12px; }
    .contact-item { padding: 18px; gap: 12px; }
    .contact-item__icon { width: 38px; height: 38px; }
    .page-hero { padding: 46px 0 40px; }
    .page-hero h1 { font-size: 26px; }
    .detail-head h1 { font-size: 22px; }
    .detail-body { font-size: 14.5px; }
    .footer__main { grid-template-columns: repeat(2, 1fr); gap: 30px 20px; }
    .footer__brand { grid-column: 1 / -1; }
    .footer__main > div:last-child { grid-column: 1 / -1; }
    .footer__bottom { font-size: 11.5px; }
    .scroll-strip { grid-auto-columns: 240px; }
    .to-top { right: 16px; bottom: 16px; width: 42px; height: 42px; }
}