/* ==========================================================================
   XC Tech 双语站点 · 设计系统
   复刻 www.cnxctech.com 的工业风视觉：深红主色、大写斜体标题、大留白
   ========================================================================== */

:root {
  --red: #c20000;
  --red-bright: #da1c28;
  --ink: #120b0c;
  --ink-soft: #1c1615;
  --ink-3b: #3b3b3b;
  --muted: #6d6663;
  --line: #e6e0dc;
  --paper: #ffffff;
  --paper-2: #f6f3f1;
  --paper-3: #efeae7;
  --f-display: "Oswald", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --f-body: "Inter", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --f-wide: "Unbounded", "Oswald", "Noto Sans SC", sans-serif;
  --maxw: 1320px;
  --pad: 24px;
  --ease: cubic-bezier(.22, .61, .36, 1);
  --shadow: 0 24px 60px -30px rgba(18, 11, 12, .45);
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--f-body);
  font-size: 18px;
  line-height: 1.75;
  color: var(--ink);
  background: var(--paper);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

body.is-locked { overflow: hidden; }

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

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

:where(a:visited) { color: inherit; }

button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

ul, ol { margin: 0; padding: 0; list-style: none; }

h1, h2, h3, h4, h5, p { margin: 0; }

:focus-visible { outline: 3px solid var(--red-bright); outline-offset: 3px; }

/* ---------- 中英文版式差异 ---------- */
html[lang="zh"] { --f-display: "Noto Sans SC", "Microsoft YaHei", sans-serif; }

html[lang="zh"] .hero-title,
html[lang="zh"] .sec-title,
html[lang="zh"] .card-title,
html[lang="zh"] .stat-num {
  font-style: normal !important;
  letter-spacing: .01em;
}

html[lang="zh"] .hero-title { font-weight: 900; font-size: clamp(30px, 3.5vw, 52px); letter-spacing: 0; }

html[lang="zh"] .hero-sub { font-size: 16px; max-width: 700px; letter-spacing: 0; }

html[lang="zh"] .sec-title { font-weight: 900; }

/* ---------- 工具类 ---------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--pad);
}

.container--wide { max-width: 1560px; }

.section { padding: 110px 0; position: relative; }

.section--tight { padding: 80px 0; }

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

.section--dark { background: var(--ink); color: #fff; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--f-display);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--red);
}

.eyebrow::before {
  content: "";
  width: 34px;
  height: 2px;
  background: var(--red);
}

.sec-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 40px; flex-wrap: wrap; }

.sec-title {
  font-family: var(--f-display);
  font-style: italic;
  font-weight: 700;
  font-size: clamp(34px, 4.4vw, 62px);
  line-height: 1.06;
  text-transform: uppercase;
  letter-spacing: -.01em;
}

.sec-title em { font-style: italic; color: var(--red); }

.sec-lead { max-width: 640px; color: var(--muted); font-size: 17px; margin-top: 22px; }

.section--dark .sec-lead { color: rgba(255, 255, 255, .68); }

.rule { height: 1px; background: var(--line); border: 0; margin: 0; }

/* ---------- 按钮 ---------- */
.btn {
  --btn-bg: var(--red);
  --btn-fg: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-width: 180px;
  height: 58px;
  padding: 0 30px;
  background: var(--btn-bg);
  color: var(--btn-fg);
  border: 1px solid var(--btn-bg);
  font-family: var(--f-display);
  font-style: italic;
  font-weight: 600;
  font-size: 16px;
  letter-spacing: .12em;
  text-transform: uppercase;
  transition: background .35s var(--ease), color .35s var(--ease), border-color .35s var(--ease), transform .35s var(--ease);
}

.btn:hover { background: transparent; color: var(--btn-bg); border-color: var(--btn-bg); }

.btn--ghost { --btn-bg: transparent; --btn-fg: #fff; border-color: rgba(255, 255, 255, .55); }

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

.btn--light { --btn-bg: #fff; --btn-fg: var(--ink); }

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

.btn .arrow { transition: transform .35s var(--ease); }

.btn:hover .arrow { transform: translateX(5px); }

.link-more {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--f-display);
  font-style: italic;
  font-size: 15px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--red);
  border-bottom: 1px solid currentColor;
  padding-bottom: 4px;
  transition: gap .3s var(--ease), color .3s var(--ease);
}

.link-more:hover { gap: 18px; color: var(--ink); }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 300;
  transition: background-color .45s var(--ease), box-shadow .45s var(--ease);
}

.site-header.is-scrolled,
.site-header.is-solid {
  background: var(--ink-3b);
  box-shadow: 0 18px 40px -30px rgba(0, 0, 0, .9);
}

.header-inner {
  height: 100px;
  display: flex;
  align-items: center;
  gap: 28px;
  transition: height .45s var(--ease);
}

.site-header.is-scrolled .header-inner { height: 78px; }

.brand { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }

.brand img { height: 44px; width: auto; }

.nav { margin-left: auto; }

.nav-list { display: flex; align-items: center; gap: 4px; }

.nav-item { position: relative; }

.nav-link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 12px 16px;
  font-family: var(--f-display);
  font-size: 16px;
  font-weight: 500;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: #fff;
  white-space: nowrap;
  transition: color .3s var(--ease);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 6px;
  height: 2px;
  background: var(--red-bright);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s var(--ease);
}

.nav-item:hover > .nav-link,
.nav-item.is-active > .nav-link { color: #fff; }

.nav-item:hover > .nav-link::after,
.nav-item.is-active > .nav-link::after { transform: scaleX(1); }

.has-children > .nav-link .caret {
  width: 8px; height: 8px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
  opacity: .7;
  transition: transform .3s var(--ease);
}

.has-children:hover > .nav-link .caret { transform: rotate(225deg) translateY(-2px); }

.submenu {
  position: absolute;
  top: calc(100% + 2px);
  left: 0;
  min-width: 268px;
  padding: 14px 0;
  background: #fff;
  box-shadow: 0 30px 60px -30px rgba(0, 0, 0, .4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity .3s var(--ease), transform .3s var(--ease), visibility .3s;
}

.has-children:hover .submenu,
.has-children:focus-within .submenu { opacity: 1; visibility: visible; transform: translateY(0); }

.submenu a {
  display: block;
  padding: 12px 26px;
  font-size: 15px;
  color: var(--ink);
  transition: background .25s var(--ease), color .25s var(--ease), padding-left .25s var(--ease);
}

.submenu a:hover { background: var(--paper-2); color: var(--red); padding-left: 34px; }

.submenu .submenu { top: -14px; left: 100%; }

.header-utils { display: flex; align-items: center; gap: 18px; margin-left: 10px; }

.lang-switch { display: inline-flex; align-items: center; gap: 2px; padding: 4px; border: 1px solid rgba(255, 255, 255, .32); }

.lang-btn {
  padding: 7px 12px;
  font-family: var(--f-display);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, .78);
  transition: background .3s var(--ease), color .3s var(--ease);
}

.lang-btn:hover { color: #fff; }

.lang-btn[aria-pressed="true"] { background: var(--red); color: #fff; }

.icon-btn {
  width: 40px; height: 40px;
  display: inline-flex; align-items: center; justify-content: center;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, .28);
  transition: background .3s var(--ease), border-color .3s var(--ease), color .3s var(--ease);
}

.icon-btn:hover { background: var(--red); border-color: var(--red); }

.icon-btn svg { width: 17px; height: 17px; }

.menu-toggle { display: none; }

/* 移动抽屉 */
.drawer {
  position: fixed;
  inset: 0;
  z-index: 400;
  background: var(--ink);
  color: #fff;
  padding: 96px 28px 40px;
  transform: translateX(100%);
  transition: transform .45s var(--ease);
  overflow-y: auto;
}

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

.drawer-close { position: absolute; top: 26px; right: 24px; font-size: 30px; line-height: 1; color: #fff; }

.drawer-nav > li { border-bottom: 1px solid rgba(255, 255, 255, .12); }

.drawer-nav a { display: block; padding: 16px 0; font-family: var(--f-display); font-size: 22px; letter-spacing: .06em; text-transform: uppercase; }

.drawer-nav .sub { padding-left: 18px; }

.drawer-nav .sub a { font-size: 16px; color: rgba(255, 255, 255, .72); padding: 10px 0; }

.drawer-lang { display: flex; gap: 12px; margin-top: 30px; }

.drawer-lang .lang-btn { border: 1px solid rgba(255, 255, 255, .3); padding: 10px 20px; }

/* ---------- 首页 Hero ---------- */
.hero { position: relative; height: 100vh; max-height: 980px; min-height: 660px; overflow: hidden; background: var(--ink); }

.hero-track { position: absolute; inset: 0; }

.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1s var(--ease);
  display: flex;
  align-items: center;
  background-size: cover;
  background-position: center;
}

.hero-slide.is-active { opacity: 1; z-index: 1; }

.hero-slide::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(10, 6, 6, .86) 0%, rgba(10, 6, 6, .55) 45%, rgba(10, 6, 6, .18) 100%);
}

.hero-content { position: relative; z-index: 2; max-width: 760px; padding: 0 var(--pad); color: #fff; }

.hero-index {
  font-family: var(--f-display);
  font-style: italic;
  font-size: 16px;
  letter-spacing: .3em;
  color: var(--red-bright);
}

.hero-title {
  font-family: var(--f-display);
  font-style: italic;
  font-weight: 700;
  font-size: clamp(40px, 5.2vw, 76px);
  line-height: 1.02;
  text-transform: uppercase;
  letter-spacing: -.015em;
  margin: 18px 0 0;
}

.hero-line { display: block; width: 76px; height: 3px; background: var(--red); margin: 28px 0; }

.hero-sub {
  font-family: var(--f-display);
  font-style: italic;
  font-size: clamp(15px, 1.5vw, 20px);
  letter-spacing: .04em;
  color: rgba(255, 255, 255, .86);
  max-width: 700px;
}

.hero-actions { margin-top: 38px; display: flex; gap: 16px; flex-wrap: wrap; }

.hero-controls {
  position: absolute;
  right: max(4vw, 30px);
  bottom: 60px;
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 20px;
}

.hero-dots { display: flex; gap: 14px; align-items: center; }

.hero-dot {
  width: 40px; height: 2px;
  background: rgba(255, 255, 255, .35);
  transition: background .3s var(--ease), width .3s var(--ease);
  text-indent: -9999px;
  overflow: hidden;
}

.hero-dot[aria-selected="true"] { background: var(--red-bright); width: 64px; }

.hero-arrows { display: flex; gap: 10px; }

.hero-arrow {
  width: 48px; height: 48px;
  border: 1px solid rgba(255, 255, 255, .4);
  color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  transition: background .3s var(--ease), border-color .3s var(--ease);
}

.hero-arrow:hover { background: var(--red); border-color: var(--red); }

.hero-scroll {
  position: absolute;
  left: max(4vw, 30px);
  bottom: 64px;
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--f-display);
  font-size: 12px;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, .65);
}

.hero-scroll::before { content: ""; width: 1px; height: 46px; background: rgba(255, 255, 255, .5); animation: scrollPulse 2.4s infinite; }

@keyframes scrollPulse {
  0% { transform: scaleY(.3); transform-origin: top; opacity: .3; }
  50% { transform: scaleY(1); opacity: 1; }
  100% { transform: scaleY(.3); transform-origin: bottom; opacity: .3; }
}

/* ---------- 产品系列 ---------- */
.series { position: relative; overflow: hidden; }

.series-bg-1,
.series-bg-2 {
  position: absolute;
  pointer-events: none;
  opacity: .06;
  z-index: 0;
}

.series-bg-1 { top: -140px; left: -60px; width: 420px; }

.series-bg-2 { right: -40px; bottom: -80px; width: 480px; }

.series .container { position: relative; z-index: 1; }

.series-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, .92fr); gap: 64px; align-items: center; }

.series-tabs { margin-top: 44px; border-top: 1px solid var(--line); }

.series-tab {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 20px;
  width: 100%;
  padding: 22px 4px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  transition: color .3s var(--ease);
  color: var(--muted);
}

.series-tab .num {
  font-family: var(--f-display);
  font-style: italic;
  font-size: 15px;
  letter-spacing: .16em;
  color: var(--red);
  width: 34px;
}

.series-tab .name {
  font-family: var(--f-display);
  font-size: clamp(20px, 2vw, 28px);
  font-weight: 500;
  letter-spacing: .02em;
  text-transform: uppercase;
  color: var(--ink);
  transition: color .3s var(--ease), transform .3s var(--ease);
}

.series-tab .mark {
  width: 10px; height: 10px;
  border: 2px solid var(--line);
  transition: background .3s var(--ease), border-color .3s var(--ease);
}

.series-tab[aria-selected="true"] .name { color: var(--red); }

.series-tab[aria-selected="true"] .mark { background: var(--red); border-color: var(--red); }

.series-tab:hover .name { transform: translateX(6px); }

.series-panel { position: relative; min-height: 420px; }

.series-slide { position: absolute; inset: 0; opacity: 0; visibility: hidden; transition: opacity .5s var(--ease); }

.series-slide.is-active { opacity: 1; visibility: visible; position: relative; }

.series-media {
  position: relative;
  background: linear-gradient(150deg, var(--paper-2), #fff 70%);
  border: 1px solid var(--line);
  padding: 40px 30px 26px;
  overflow: hidden;
}

.series-media img { width: 100%; height: 330px; object-fit: contain; filter: drop-shadow(0 30px 40px rgba(0, 0, 0, .18)); transition: transform .6s var(--ease); }

.series-media:hover img { transform: scale(1.04); }

.series-media .big-num {
  position: absolute;
  top: 8px; left: 22px;
  font-family: var(--f-display);
  font-style: italic;
  font-size: 88px;
  line-height: 1;
  color: rgba(18, 11, 12, .07);
}

.series-caption { margin-top: 22px; display: flex; justify-content: space-between; gap: 20px; align-items: flex-start; }

.series-caption p { color: var(--muted); font-size: 15.5px; max-width: 68%; }

/* ---------- 关于 ---------- */
.about-band {
  position: relative;
  color: #fff;
  background-size: cover;
  background-position: center;
  padding: 130px 0;
}

.about-band::before { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(12, 8, 8, .93) 0%, rgba(12, 8, 8, .74) 52%, rgba(12, 8, 8, .4) 100%); }

.about-band .container { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(0, .65fr); gap: 70px; align-items: center; }

.about-band .sec-title { color: #fff; }

.about-copy { color: rgba(255, 255, 255, .76); margin-top: 26px; font-size: 17px; max-width: 720px; }

.about-copy + .about-copy { margin-top: 14px; }

.stats { display: flex; gap: 44px; flex-wrap: wrap; margin-top: 48px; }

.stat-num {
  font-family: var(--f-display);
  font-style: italic;
  font-weight: 700;
  font-size: clamp(40px, 4.4vw, 62px);
  line-height: 1;
  color: #fff;
}

.stat-num small { font-size: .5em; color: var(--red-bright); }

.stat-label { font-size: 14px; letter-spacing: .12em; text-transform: uppercase; color: rgba(255, 255, 255, .6); margin-top: 8px; }

.about-visual { position: relative; }

.about-visual img { width: 100%; max-width: 420px; margin: 0 auto; display: block; filter: drop-shadow(0 40px 60px rgba(0, 0, 0, .5)); }

/* ---------- 产品横滑 ---------- */
.rail-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 30px; flex-wrap: wrap; }

.rail-nav { display: flex; gap: 10px; }

.rail-btn {
  width: 52px; height: 52px;
  border: 1px solid var(--line);
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--ink);
  transition: background .3s var(--ease), color .3s var(--ease), border-color .3s var(--ease);
}

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

.rail {
  display: flex;
  gap: 26px;
  margin-top: 46px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: 26px;
  scrollbar-width: thin;
}

.rail::-webkit-scrollbar { height: 4px; }

.rail::-webkit-scrollbar-thumb { background: var(--line); }

.product-card {
  flex: 0 0 380px;
  scroll-snap-align: start;
  background: #fff;
  border: 1px solid var(--line);
  padding: 32px 30px 26px;
  display: flex;
  flex-direction: column;
  transition: box-shadow .4s var(--ease), transform .4s var(--ease), border-color .4s var(--ease);
}

.product-card:hover { box-shadow: var(--shadow); transform: translateY(-6px); border-color: transparent; }

.product-card .model {
  font-family: var(--f-display);
  font-style: italic;
  font-weight: 700;
  font-size: 40px;
  line-height: 1;
  text-transform: uppercase;
}

.product-card .pname { font-family: var(--f-display); font-size: 19px; font-weight: 500; margin-top: 10px; letter-spacing: .02em; }

.product-card .pdesc { color: var(--muted); font-size: 14.5px; line-height: 1.7; margin-top: 14px; display: -webkit-box; -webkit-line-clamp: 4; -webkit-box-orient: vertical; overflow: hidden; }

.product-card .pimg { margin-top: auto; padding-top: 26px; }

.product-card .pimg img { height: 210px; width: 100%; object-fit: contain; transition: transform .5s var(--ease); }

.product-card:hover .pimg img { transform: scale(1.05); }

/* ---------- 视频带 ---------- */
.video-band {
  position: relative;
  min-height: 460px;
  display: grid;
  place-items: center;
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  color: #fff;
  overflow: hidden;
}

.video-band::before { content: ""; position: absolute; inset: 0; background: rgba(10, 7, 7, .42); }

.video-inner { position: relative; z-index: 1; text-align: center; }

.play-btn { display: inline-flex; align-items: center; justify-content: center; flex-direction: column; gap: 22px; }

.play-btn img { width: 92px; transition: transform .4s var(--ease); }

.play-btn:hover img { transform: scale(1.08); }

.play-btn span { font-family: var(--f-display); font-style: italic; font-size: 26px; letter-spacing: .14em; text-transform: uppercase; }

/* ---------- 新闻 ---------- */
.news-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 30px; margin-top: 56px; }

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

.news-card:hover { box-shadow: var(--shadow); transform: translateY(-6px); }

.news-media { position: relative; overflow: hidden; aspect-ratio: 16 / 10; }

.news-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease); }

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

.news-tag {
  position: absolute;
  left: 18px; top: 18px;
  padding: 6px 12px;
  background: var(--red);
  font-family: var(--f-display);
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: #fff;
}

.news-body { padding: 28px 26px 30px; display: flex; flex-direction: column; gap: 14px; flex: 1; }

.news-date { display: inline-flex; align-items: center; gap: 10px; font-family: var(--f-display); font-size: 13px; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }

.news-title { font-family: var(--f-display); font-size: 21px; font-weight: 500; line-height: 1.35; transition: color .3s var(--ease); }

.news-card:hover .news-title { color: var(--red); }

.news-excerpt { color: var(--muted); font-size: 14.5px; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }

.news-body .link-more { margin-top: auto; align-self: flex-start; font-size: 13px; }

/* ---------- 合作赋能 ---------- */
.coop { position: relative; overflow: hidden; background: var(--ink); color: #fff; }

.coop::after {
  content: "OEM";
  position: absolute;
  right: -2%;
  bottom: -8%;
  font-family: var(--f-display);
  font-style: italic;
  font-weight: 700;
  font-size: clamp(140px, 26vw, 380px);
  line-height: .8;
  color: rgba(255, 255, 255, .035);
  pointer-events: none;
}

.coop-grid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); gap: 70px; align-items: center; position: relative; z-index: 1; }

.coop .sec-title { color: #fff; }

.coop-list { margin-top: 54px; border-top: 1px solid rgba(255, 255, 255, .14); }

.coop-item { display: grid; grid-template-columns: 200px 1fr; gap: 26px; padding: 26px 0; border-bottom: 1px solid rgba(255, 255, 255, .14); }

.coop-item h3 { font-family: var(--f-display); font-size: 18px; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; color: #fff; }

.coop-item p { color: rgba(255, 255, 255, .62); font-size: 15.5px; }

.coop-visual { box-shadow: 0 46px 90px -46px rgba(0, 0, 0, .85); }

.coop-visual img { display: block; width: 100%; filter: drop-shadow(0 40px 70px rgba(0, 0, 0, .6)); }

/* ---------- 内页横幅 ---------- */
.inner-banner { position: relative; height: 520px; display: flex; align-items: flex-end; padding-bottom: 56px; color: #fff; overflow: hidden; background: var(--ink); }

.inner-banner img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }

.inner-banner::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(9, 6, 6, .72) 0%, rgba(9, 6, 6, .25) 45%, rgba(9, 6, 6, .78) 100%); }

.inner-banner .container { position: relative; z-index: 1; }

.crumbs { display: flex; align-items: center; gap: 10px; font-family: var(--f-display); font-size: 13px; letter-spacing: .18em; text-transform: uppercase; color: rgba(255, 255, 255, .66); }

.crumbs a:hover { color: #fff; }

.crumbs .sep { opacity: .5; }

.inner-banner h1 {
  font-family: var(--f-display);
  font-style: italic;
  font-weight: 700;
  font-size: clamp(34px, 4vw, 58px);
  line-height: 1.05;
  text-transform: uppercase;
  margin-top: 16px;
  max-width: 980px;
}

.inner-banner .banner-desc { max-width: 720px; color: rgba(255, 255, 255, .72); margin-top: 16px; font-size: 16px; }

/* ---------- 产品页面 ---------- */
.cat-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 34px; }

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

.cat-card:hover { box-shadow: var(--shadow); transform: translateY(-6px); }

.cat-card .cat-media { background: linear-gradient(160deg, var(--paper-2), #fff); padding: 40px; }

.cat-card .cat-media img { height: 300px; width: 100%; object-fit: contain; transition: transform .6s var(--ease); }

.cat-card:hover .cat-media img { transform: scale(1.04); }

.cat-card .cat-body { padding: 30px 34px 36px; border-top: 1px solid var(--line); }

.cat-card h2 { font-family: var(--f-display); font-size: 30px; font-weight: 600; text-transform: uppercase; }

.cat-card p { color: var(--muted); font-size: 15.5px; margin-top: 12px; }

.cat-card .link-more { margin-top: 22px; }

.product-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 30px; margin-top: 50px; }

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

.pcard:hover { box-shadow: var(--shadow); transform: translateY(-6px); border-color: transparent; }

.pcard .thumb { position: relative; aspect-ratio: 4 / 3; background: linear-gradient(160deg, var(--paper-2), #fff); overflow: hidden; display: grid; place-items: center; padding: 24px; }

.pcard .thumb img { max-height: 100%; width: auto; object-fit: contain; transition: transform .55s var(--ease); }

.pcard:hover .thumb img { transform: scale(1.06); }

.pcard .thumb .hover-img { position: absolute; inset: 0; display: grid; place-items: center; padding: 24px; opacity: 0; transition: opacity .45s var(--ease); background: linear-gradient(160deg, var(--paper-2), #fff); }

.pcard .thumb .hover-img img { max-height: 100%; width: auto; }

.pcard:hover .thumb .hover-img { opacity: 1; }

.pcard .pbody { padding: 22px 24px 26px; border-top: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; gap: 16px; }

.pcard .pbody h3 { font-family: var(--f-display); font-size: 17.5px; font-weight: 500; line-height: 1.4; }

.pcard .pbody .go { width: 34px; height: 34px; border: 1px solid var(--line); display: grid; place-items: center; flex-shrink: 0; transition: background .3s var(--ease), color .3s var(--ease), border-color .3s var(--ease); }

.pcard:hover .pbody .go { background: var(--red); border-color: var(--red); color: #fff; }

.cat-intro { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 60px; align-items: start; }

.cat-intro .copy p { color: var(--muted); margin-top: 18px; }

.cat-intro .copy p:first-child { margin-top: 0; }

.cat-note { border-left: 3px solid var(--red); padding: 6px 0 6px 22px; color: var(--ink); font-size: 16px; }

.pagination { display: flex; gap: 10px; justify-content: center; margin-top: 56px; }

.page-num { width: 46px; height: 46px; display: grid; place-items: center; border: 1px solid var(--line); font-family: var(--f-display); font-size: 15px; transition: all .3s var(--ease); }

.page-num:hover, .page-num.is-current { background: var(--ink); color: #fff; border-color: var(--ink); }

.page-num.is-disabled { opacity: .35; pointer-events: none; }

/* ---------- 关于页 ---------- */
.about-2col { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); gap: 70px; align-items: center; }

.about-pic { position: relative; }

.about-pic img { width: 100%; aspect-ratio: 4 / 3.2; object-fit: cover; position: relative; z-index: 1; }

.about-pic::after { content: ""; position: absolute; inset: 18px -18px -18px 18px; border: 2px solid var(--red); z-index: 0; }

.about-stats { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); margin-top: 40px; }

.about-stats .cell { background: #fff; padding: 26px 24px; }

.about-stats .cell span { font-family: var(--f-display); font-style: italic; font-weight: 700; font-size: 36px; line-height: 1; display: block; }

.about-stats .cell span i { color: var(--red); font-style: italic; font-size: .55em; }

.about-stats .cell p { font-size: 13.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin-top: 8px; }

.timeline-head { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); gap: 60px; align-items: end; }

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

.timeline::before { content: ""; position: absolute; left: 0; top: 8px; bottom: 8px; width: 1px; background: var(--line); }

.tl-item { position: relative; padding: 0 0 44px 36px; }

.tl-item::before { content: ""; position: absolute; left: -5px; top: 12px; width: 11px; height: 11px; background: #fff; border: 2px solid var(--red); border-radius: 50%; }

.tl-item:last-child { padding-bottom: 0; }

.tl-year { font-family: var(--f-display); font-style: italic; font-weight: 700; font-size: 34px; line-height: 1; color: var(--red); }

.tl-text { margin-top: 10px; color: var(--muted); max-width: 760px; }

.cert-row { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; margin-top: 44px; }

.cert { border: 1px solid var(--line); background: #fff; padding: 16px; }

.cert img { width: 100%; aspect-ratio: 3 / 4; object-fit: cover; transition: transform .5s var(--ease); cursor: zoom-in; }

.cert:hover img { transform: scale(1.02); }

.cert p { font-size: 14px; color: var(--muted); margin-top: 14px; text-align: center; }

/* ---------- 工厂页 ---------- */
.filter-bar { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 40px; }

.filter-btn { padding: 11px 22px; border: 1px solid var(--line); font-family: var(--f-display); font-size: 14px; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); transition: all .3s var(--ease); }

.filter-btn:hover { color: var(--ink); border-color: var(--ink); }

.filter-btn.is-active { background: var(--ink); border-color: var(--ink); color: #fff; }

.gallery { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; margin-top: 40px; }

.gallery-item { position: relative; overflow: hidden; background: var(--paper-3); cursor: zoom-in; }

.gallery-item img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; transition: transform .6s var(--ease); }

.gallery-item:hover img { transform: scale(1.06); }

.gallery-item figcaption { position: absolute; left: 0; right: 0; bottom: 0; padding: 16px 18px; background: linear-gradient(0deg, rgba(9, 6, 6, .82), transparent); color: #fff; font-size: 14px; letter-spacing: .06em; }

.gallery-item.is-hidden { display: none; }

/* ---------- 技术页 ---------- */
.tech-hero-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 26px; margin-top: 46px; }

.tech-hero-grid img { width: 100%; aspect-ratio: 16 / 11; object-fit: cover; }

.tech-points { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; margin-top: 56px; }

.tech-point { border-top: 2px solid var(--red); padding-top: 22px; }

.tech-point .idx { font-family: var(--f-display); font-style: italic; font-size: 15px; letter-spacing: .2em; color: var(--red); }

.tech-point h3 { font-family: var(--f-display); font-size: 22px; margin-top: 12px; text-transform: uppercase; }

.tech-point p { color: var(--muted); font-size: 15.5px; margin-top: 10px; }

.app-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; margin-top: 48px; }

.app-card { position: relative; overflow: hidden; color: #fff; min-height: 380px; display: flex; align-items: flex-end; padding: 32px; }

.app-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: -1; transition: transform .7s var(--ease); }

.app-card::after { content: ""; position: absolute; inset: 0; background: linear-gradient(0deg, rgba(9, 6, 6, .85), rgba(9, 6, 6, .1)); z-index: -1; }

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

.app-card h3 { font-family: var(--f-display); font-size: 24px; text-transform: uppercase; }

.app-card p { color: rgba(255, 255, 255, .74); font-size: 14.5px; margin-top: 8px; }

.rd-grid { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 64px; align-items: center; }

.rd-list { border-top: 1px solid rgba(255, 255, 255, .14); margin-top: 40px; }

.rd-item { padding: 24px 0; border-bottom: 1px solid rgba(255, 255, 255, .14); display: grid; grid-template-columns: 44px 1fr; gap: 18px; }

.rd-item .n { font-family: var(--f-display); font-style: italic; font-size: 15px; color: var(--red-bright); letter-spacing: .1em; }

.rd-item h3 { font-family: var(--f-display); font-size: 19px; letter-spacing: .06em; text-transform: uppercase; color: #fff; }

.rd-item p { color: rgba(255, 255, 255, .62); font-size: 15px; margin-top: 6px; }

.rd-visual { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.rd-visual img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 1 / 1.15; }

.rd-visual img:nth-child(3) { grid-column: 1 / -1; aspect-ratio: 2.4 / 1; }

/* ---------- 新闻页 ---------- */
.news-list-page { display: flex; flex-direction: column; gap: 34px; margin-top: 46px; }

.nrow { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); background: #fff; border: 1px solid var(--line); overflow: hidden; transition: box-shadow .4s var(--ease), transform .4s var(--ease); }

.nrow:hover { box-shadow: var(--shadow); transform: translateY(-4px); }

.nrow .nmedia { overflow: hidden; }

.nrow .nmedia img { width: 100%; height: 100%; min-height: 280px; object-fit: cover; transition: transform .6s var(--ease); }

.nrow:hover .nmedia img { transform: scale(1.05); }

.nrow .nbody { padding: 38px 40px; display: flex; flex-direction: column; gap: 16px; align-items: flex-start; }

.nrow .nbody > * { width: 100%; }

.nrow .nbody .link-more { align-self: flex-start; width: auto; }

.nrow h2 { font-family: var(--f-display); font-size: clamp(22px, 2.2vw, 30px); font-weight: 500; line-height: 1.3; }

.nrow p { color: var(--muted); font-size: 15.5px; }

.nrow .meta { display: flex; align-items: center; gap: 18px; font-family: var(--f-display); font-size: 13px; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); }

.nrow .meta .tag { color: var(--red); }

/* ---------- 联系页 ---------- */
.contact-grid { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); gap: 70px; }

.contact-cards { display: grid; gap: 18px; margin-top: 40px; }

.contact-card { display: grid; grid-template-columns: 54px 1fr; gap: 20px; padding: 24px 26px; border: 1px solid var(--line); background: #fff; align-items: start; }

.contact-card .ico { width: 54px; height: 54px; display: grid; place-items: center; background: var(--paper-2); color: var(--red); }

.contact-card h3 { font-family: var(--f-display); font-size: 13px; letter-spacing: .18em; text-transform: uppercase; color: var(--muted); }

.contact-card p, .contact-card a { font-size: 17px; margin-top: 6px; display: block; }

.contact-card a:hover { color: var(--red); }

.map-card { margin-top: 26px; border: 1px solid var(--line); background: var(--paper-2); padding: 26px; display: flex; gap: 20px; align-items: center; }

.map-card .pin { width: 46px; height: 46px; color: var(--red); flex-shrink: 0; }

.form-card { background: #fff; border: 1px solid var(--line); padding: 46px 44px; }

.form-card h2 { font-family: var(--f-display); font-style: italic; font-size: 32px; text-transform: uppercase; }

.form-card > p { color: var(--muted); margin-top: 10px; font-size: 15.5px; }

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 32px; }

.field { display: flex; flex-direction: column; gap: 8px; }

.field.full { grid-column: 1 / -1; }

.field label { font-family: var(--f-display); font-size: 13px; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); }

.field input, .field select, .field textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--line);
  background: #fff;
  font-family: var(--f-body);
  font-size: 16px;
  color: var(--ink);
  transition: border-color .3s var(--ease), box-shadow .3s var(--ease);
}

.field textarea { min-height: 132px; resize: vertical; }

.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--red); box-shadow: 0 0 0 3px rgba(194, 0, 0, .12); }

.form-note { font-size: 13px; color: var(--muted); margin-top: 16px; }

.form-status { margin-top: 18px; font-size: 15px; color: #1a7f3c; display: none; }

.form-status.is-visible { display: block; }

/* ---------- 询盘 CTA 带（全站复用） ---------- */
.cta-band { background: var(--ink); color: #fff; padding: 100px 0; position: relative; overflow: hidden; }

.cta-band::before { content: ""; position: absolute; right: -10%; top: -30%; width: 620px; height: 620px; border-radius: 50%; background: radial-gradient(circle, rgba(194, 0, 0, .35), transparent 65%); }

.cta-inner { position: relative; z-index: 1; display: flex; justify-content: space-between; align-items: center; gap: 40px; flex-wrap: wrap; }

.cta-inner h2 { font-family: var(--f-display); font-style: italic; font-size: clamp(30px, 3.6vw, 52px); line-height: 1.1; text-transform: uppercase; max-width: 720px; }

.cta-inner h2 em { color: var(--red-bright); }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--ink-3b); color: #fff; }

.footer-top { display: grid; grid-template-columns: minmax(0, 1.25fr) repeat(3, minmax(0, .6fr)); gap: 54px; padding: 84px 0 70px; }

.footer-form-wrap { min-width: 0; }

.footer-title { font-family: var(--f-display); font-style: italic; font-size: clamp(25px, 2.4vw, 36px); line-height: 1.2; text-transform: uppercase; margin-bottom: 26px; }

.footer-title em { color: var(--red-bright); }

.footer-form ul { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

.footer-form li { list-style: none; }

.footer-form .full { grid-column: 1 / -1; }

.footer-form input, .footer-form textarea {
  width: 100%;
  padding: 15px 18px;
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .18);
  color: #fff;
  font-family: var(--f-body);
  font-size: 15px;
  transition: border-color .3s var(--ease), background .3s var(--ease);
}

.footer-form input::placeholder, .footer-form textarea::placeholder { color: rgba(255, 255, 255, .45); }

.footer-form input:focus, .footer-form textarea:focus { outline: none; border-color: var(--red-bright); background: rgba(255, 255, 255, .1); }

.footer-form textarea { min-height: 110px; resize: vertical; }

.footer-form button { margin-top: 16px; }

.footer-col h3 { font-family: var(--f-display); font-size: 15px; font-weight: 600; letter-spacing: .18em; text-transform: uppercase; margin-bottom: 22px; color: rgba(255, 255, 255, .92); }

.footer-col li { margin-bottom: 12px; }

.footer-col a, .footer-col p, .footer-col span { color: rgba(255, 255, 255, .62); font-size: 14.5px; transition: color .3s var(--ease); }

.footer-col a:hover { color: #fff; }

.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .12); padding: 26px 0; display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap; }

.footer-bottom p, .footer-bottom a { font-size: 13.5px; color: rgba(255, 255, 255, .55); }

.footer-bottom .domain-note { color: rgba(255, 255, 255, .4); letter-spacing: .04em; font-size: 12.5px; }

.socials { display: flex; gap: 10px; }

.socials a,
.socials .social-pending { width: 38px; height: 38px; border: 1px solid rgba(255, 255, 255, .22); display: grid; place-items: center; color: rgba(255, 255, 255, .8); transition: all .3s var(--ease); }

.socials a:hover { background: var(--red); border-color: var(--red); color: #fff; }

.socials .social-pending { cursor: default; opacity: .5; border-style: dashed; }

.socials svg { width: 16px; height: 16px; }

/* ---------- 灯箱 ---------- */
.lightbox { position: fixed; inset: 0; z-index: 600; background: rgba(8, 5, 5, .94); display: none; align-items: center; justify-content: center; padding: 40px; }

.lightbox.is-open { display: flex; }

.lightbox img { max-width: min(1100px, 92vw); max-height: 84vh; object-fit: contain; }

.lightbox-close { position: absolute; top: 26px; right: 30px; color: #fff; font-size: 36px; line-height: 1; }

.lightbox-caption { position: absolute; bottom: 34px; left: 0; right: 0; text-align: center; color: rgba(255, 255, 255, .75); font-size: 14px; }

/* 视频弹窗 */
.video-modal { position: fixed; inset: 0; z-index: 620; background: rgba(6, 4, 4, .95); display: none; align-items: center; justify-content: center; padding: 40px; }

.video-modal.is-open { display: flex; }

.video-modal video { width: min(1100px, 92vw); max-height: 82vh; background: #000; }

.video-modal .lightbox-close { top: 22px; right: 28px; }

/* ---------- 滚动揭示 ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s var(--ease), transform .8s var(--ease); }

.reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
}

/* ---------- 搜索遮罩 ---------- */
.search-overlay {
  position: fixed;
  inset: 0;
  z-index: 500;
  background: rgba(10, 6, 6, .96);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 40px;
}

.search-overlay.is-open { display: flex; }

.search-overlay form { width: min(760px, 92vw); }

.search-label {
  display: block;
  font-family: var(--f-display);
  font-style: italic;
  font-size: 14px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, .6);
  margin-bottom: 20px;
}

.search-row { display: flex; gap: 12px; }

.search-row input {
  flex: 1;
  padding: 16px 20px;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, .35);
  color: #fff;
  font-family: var(--f-body);
  font-size: 17px;
}

.search-row input::placeholder { color: rgba(255, 255, 255, .38); }

.search-row input:focus { outline: none; border-color: var(--red-bright); }

.filter-btn { display: inline-flex; align-items: center; cursor: pointer; }

/* 中文首屏防英文闪现 */
html.is-zh-pending [data-en] { color: transparent !important; }

/* ---------- 响应式 ---------- */
@media (max-width: 1180px) {
  .series-grid { grid-template-columns: 1fr; gap: 44px; }
  .about-band .container { grid-template-columns: 1fr; gap: 46px; }
  .about-visual { max-width: 460px; }
  .coop-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-2col, .cat-intro, .contact-grid, .rd-grid { grid-template-columns: 1fr; gap: 44px; }
  .footer-top { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 40px; }
  .tech-points, .app-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 992px) {
  body { font-size: 17px; }
  .nav, .header-utils .lang-switch, .header-utils .icon-btn--desktop { display: none; }
  .menu-toggle { display: inline-flex; }
  .header-utils { margin-left: auto; }
  .hero { min-height: 560px; }
  .hero-controls { right: 20px; bottom: 34px; }
  .hero-scroll { display: none; }
  .section { padding: 78px 0; }
  .product-grid, .news-grid, .gallery, .cat-grid, .cert-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .category-grid { grid-template-columns: repeat(2, 1fr); }
  .product-card { flex: 0 0 320px; }
  .coop-item { grid-template-columns: 1fr; gap: 8px; }
  .timeline-head { grid-template-columns: 1fr; gap: 20px; }
  .nrow { grid-template-columns: 1fr; }
  .nrow .nmedia img { min-height: 220px; max-height: 300px; }
  .inner-banner { height: 420px; }
  .tech-hero-grid, .rd-visual { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  :root { --pad: 18px; }
  .header-inner { height: 78px; }
  .brand img { height: 34px; }
  .hero-title { font-size: 36px; }
  .hero-sub { font-size: 15px; }
  .product-grid, .news-grid, .gallery, .cat-grid, .cert-row, .tech-points, .app-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .form-card { padding: 32px 22px; }
  .stats { gap: 28px; }
  .stat-num { font-size: 40px; }
  .about-stats { grid-template-columns: 1fr 1fr; }
  .footer-form ul { grid-template-columns: 1fr; }
  .cta-band { padding: 70px 0; }
  .series-media img { height: 220px; }
  .hero-dot { width: 26px; }
}

@media (max-width: 420px) {
  .brand img { height: 30px; }
  .hero-title { font-size: 30px; }
  .hero-sub { font-size: 14px; }
}

/* ---------- 产品详情页 ---------- */
.pdet { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); gap: 60px; align-items: start; }

.pdet-gallery { position: sticky; top: 104px; }

.pdet-info { min-width: 0; }

.pdet-main {
  background: linear-gradient(160deg, var(--paper-2), #fff);
  border: 1px solid var(--line);
  aspect-ratio: 4 / 3.1;
  display: grid;
  place-items: center;
  padding: 32px;
  overflow: hidden;
}

.pdet-main img { max-width: 100%; max-height: 100%; object-fit: contain; transition: opacity .25s var(--ease); }

.pdet-thumbs { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 10px; margin-top: 12px; }

.pdet-thumb {
  border: 1px solid var(--line);
  background: #fff;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  padding: 7px;
  cursor: pointer;
  transition: border-color .25s var(--ease), transform .25s var(--ease);
}

.pdet-thumb img { max-width: 100%; max-height: 100%; object-fit: contain; }

.pdet-thumb:hover { transform: translateY(-2px); }

.pdet-thumb.is-active { border-color: var(--red); box-shadow: 0 0 0 1px var(--red) inset; }

.pdet-title {
  font-family: var(--f-display);
  font-size: clamp(28px, 3vw, 42px);
  font-weight: 600;
  line-height: 1.12;
  text-transform: uppercase;
  letter-spacing: .01em;
  margin-top: 14px;
}

.pdet-desc { color: var(--muted); font-size: 16.5px; line-height: 1.8; margin-top: 18px; }

.pdet-highlights { margin-top: 30px; border-top: 1px solid var(--line); }

.pdet-hl { display: flex; justify-content: space-between; gap: 20px; padding: 13px 0; border-bottom: 1px solid var(--line); font-size: 15px; }

.pdet-hl dt { color: var(--muted); }

.pdet-hl dd { margin: 0; font-weight: 600; text-align: right; }

.pdet-actions { display: flex; gap: 12px; margin-top: 32px; flex-wrap: wrap; }

.feature-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 34px 52px; margin-top: 46px; }

.feature-item { border-top: 2px solid var(--red); padding-top: 20px; }

.feature-item .n { font-family: var(--f-display); font-style: italic; color: var(--red); font-size: 14px; letter-spacing: .2em; }

.feature-item h3 { font-family: var(--f-display); font-size: 20px; line-height: 1.35; margin-top: 10px; text-transform: uppercase; }

.feature-item p { color: var(--muted); font-size: 15.5px; margin-top: 8px; }

.spec-wrap { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: 60px; align-items: start; }

.spec-table { width: 100%; border-collapse: collapse; }

.spec-table tr { border-bottom: 1px solid var(--line); }

.spec-table td { padding: 14px 4px; font-size: 15.5px; vertical-align: top; }

.spec-table td:first-child { color: var(--muted); width: 46%; }

.spec-table td:last-child { font-weight: 500; }

.app-tags { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }

.app-tag { padding: 10px 18px; border: 1px solid var(--line); font-size: 14.5px; background: #fff; }

.oem-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 56px; margin-top: 46px; align-items: start; }

.oem-list { border-top: 1px solid var(--line); }

.oem-list li { padding: 16px 0 16px 30px; border-bottom: 1px solid var(--line); position: relative; color: var(--muted); font-size: 15.5px; }

.oem-list li::before { content: ""; position: absolute; left: 4px; top: 24px; width: 8px; height: 8px; background: var(--red); }

.faq-list { margin-top: 42px; border-top: 1px solid var(--line); max-width: 960px; }

.faq-item { border-bottom: 1px solid var(--line); }

.faq-item summary {
  padding: 20px 0;
  cursor: pointer;
  font-family: var(--f-display);
  font-size: 17px;
  font-weight: 500;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::after { content: "+"; color: var(--red); font-size: 24px; line-height: 1; flex-shrink: 0; }

.faq-item[open] summary::after { content: "−"; }

.faq-item p { padding: 0 0 22px; color: var(--muted); font-size: 15.5px; max-width: 860px; }

.related-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 26px; margin-top: 42px; }

.pcard .pbody .pname { font-family: var(--f-display); font-size: 16.5px; font-weight: 500; line-height: 1.4; }

.btn--outline { --btn-bg: transparent; --btn-fg: var(--ink); border-color: var(--ink); }

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

/* ---------- 新闻详情页 ---------- */
.post { max-width: 880px; margin: 0 auto; }

.post-meta { display: flex; gap: 16px; align-items: center; font-family: var(--f-display); font-size: 13px; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); }

.post-meta .tag { color: var(--red); }

.post-body { margin-top: 28px; }

.post-body h2 { font-family: var(--f-display); font-size: 26px; font-weight: 600; line-height: 1.32; margin-top: 44px; }

.post-body p { font-size: 17px; line-height: 1.9; margin-top: 16px; color: var(--ink); }

.post-body p:first-of-type { font-size: 18px; color: var(--muted); }

.post-foot { margin-top: 52px; display: flex; gap: 22px; align-items: center; flex-wrap: wrap; }

.related-grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 26px; margin-top: 42px; }

.caret-card { display: flex; gap: 20px; border: 1px solid var(--line); background: #fff; padding: 16px; align-items: center; transition: box-shadow .3s var(--ease), transform .3s var(--ease); }

.caret-card:hover { box-shadow: var(--shadow); transform: translateY(-3px); }

.caret-card .img-wrap { flex: 0 0 140px; aspect-ratio: 4 / 3; overflow: hidden; }

.caret-card .img-wrap img { width: 100%; height: 100%; object-fit: cover; }

.caret-card .txt { display: flex; flex-direction: column; gap: 8px; }

.caret-card .date { font-size: 12.5px; color: var(--muted); letter-spacing: .08em; }

.caret-card .t { font-family: var(--f-display); font-size: 16.5px; line-height: 1.4; }

@media (max-width: 640px) {
  .related-grid-2 { grid-template-columns: 1fr; }
  .post-body h2 { font-size: 22px; }
  .post-body p { font-size: 16px; }
}

@media (max-width: 992px) {
  .pdet { grid-template-columns: 1fr; gap: 34px; }
  .pdet-gallery { position: static; }
  .spec-wrap, .oem-grid { grid-template-columns: 1fr; gap: 34px; }
  .feature-grid { grid-template-columns: 1fr; gap: 26px; }
  .related-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .related-grid { grid-template-columns: 1fr; }
  .pdet-thumbs { grid-template-columns: repeat(5, minmax(0, 1fr)); }
  .pdet-main { padding: 18px; }
}