/* ============================================================
   恒控电热科技 — 暖色工业精准温控 设计系统
   主色: 暖灰#2D2D2D + 橙红#E87A20 + 米白#F5F1EA + 深灰#1E1E1E
   ============================================================ */

/* ---------- 1. Reset & 变量 ---------- */
:root {
  --c-orange: #E87A20;
  --c-orange-deep: #C95F10;
  --c-orange-soft: #F59E4B;
  --c-dark: #2D2D2D;
  --c-charcoal: #1E1E1E;
  --c-charcoal-2: #252525;
  --c-cream: #F5F1EA;
  --c-cream-2: #EDE6DB;
  --c-gray: #8A8580;
  --c-line: #3A3A3A;
  --c-line-light: #E0D8CC;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 14px;
  --font: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-num: "Noto Sans SC", "Segoe UI", "Bahnschrift", "DIN Alternate", "Arial", sans-serif;
  --shadow: 0 8px 30px rgba(30, 30, 30, 0.12);
  --shadow-card: 0 4px 18px rgba(30, 30, 30, 0.10);
  --maxw: 1280px;
  --header-h: 76px;
}

:focus-visible { outline: 2px solid var(--c-orange); outline-offset: 2px; }
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  color: var(--c-dark);
  background: var(--c-cream);
  line-height: 1.7;
  font-size: 15px;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; border: 0; }
a { color: inherit; text-decoration: none; transition: color .25s; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: 0; background: none; }
input, select, textarea { font-family: inherit; font-size: 14px; }
h1, h2, h3, h4, h5 { font-weight: 700; line-height: 1.3; }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.num { font-family: var(--font-num); font-variant-numeric: tabular-nums; }

/* ---------- 2. 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 26px; border-radius: var(--radius-md);
  font-size: 14px; font-weight: 600; letter-spacing: 1px;
  transition: all .3s; white-space: nowrap;
}
.btn--orange { background: var(--c-orange); color: #fff; border: 1px solid var(--c-orange); }
.btn--orange:hover { background: var(--c-orange-deep); border-color: var(--c-orange-deep); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(232,122,32,.35); }
.btn--outline { background: transparent; color: var(--c-orange); border: 1px solid var(--c-orange); }
.btn--outline:hover { background: var(--c-orange); color: #fff; transform: translateY(-2px); }
.btn--dark { background: var(--c-dark); color: #fff; border: 1px solid var(--c-dark); }
.btn--dark:hover { background: var(--c-charcoal); transform: translateY(-2px); }
.btn--ghost-light { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,.6); }
.btn--ghost-light:hover { background: #fff; color: var(--c-dark); transform: translateY(-2px); }
.btn--block { width: 100%; }

/* ---------- 3. 区块标题 ---------- */
.sec { padding: 72px 0; }
.sec--dark { background: var(--c-charcoal); color: #E9E4DC; }
.sec--cream { background: var(--c-cream); }
.sec--cream2 { background: var(--c-cream-2); }
.sec--orange-grad {
  background: linear-gradient(135deg, var(--c-orange-deep) 0%, var(--c-orange) 55%, #F2A35B 100%);
  color: #fff;
}
.sec-head { text-align: center; max-width: 720px; margin: 0 auto 46px; }
.sec-head__sub {
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--c-orange); font-size: 13px; letter-spacing: 4px; font-weight: 600;
  margin-bottom: 10px;
}
.sec-head__sub::before, .sec-head__sub::after { content: ""; width: 26px; height: 2px; background: var(--c-orange); opacity: .5; }
.sec--dark .sec-head__sub { color: var(--c-orange-soft); }
.sec-head__title { font-size: 32px; color: var(--c-dark); letter-spacing: 1px; }
.sec--dark .sec-head__title { color: #F5F1EA; }
.sec-head__title em { font-style: normal; color: var(--c-orange); }
.sec--dark .sec-head__title em { color: var(--c-orange); }
.sec-head__desc { margin-top: 12px; color: var(--c-gray); font-size: 14px; }
.sec--dark .sec-head__desc { color: #A8A29B; }
.sec-head__line { width: 56px; height: 3px; background: linear-gradient(90deg, var(--c-orange), transparent); margin: 16px auto 0; border-radius: 2px; }

/* 热力波纹标题动效 */
.heat-ripple { position: relative; display: inline-block; }
.heat-ripple::before, .heat-ripple::after {
  content: ""; position: absolute; left: 50%; bottom: -6px;
  width: 14px; height: 14px; border-radius: 50%;
  border: 2px solid var(--c-orange); opacity: .7; transform: translateX(-50%);
  animation: heatPulse 2.4s ease-out infinite;
}
.heat-ripple::after { animation-delay: 1.2s; }
@keyframes heatPulse {
  0% { transform: translateX(-50%) scale(.4); opacity: .8; }
  70% { transform: translateX(-50%) scale(2.6); opacity: 0; }
  100% { transform: translateX(-50%) scale(2.6); opacity: 0; }
}

/* ---------- 4. 顶部导航 ---------- */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 999;
  height: var(--header-h);
  background: linear-gradient(180deg, rgba(30,30,30,.55) 0%, rgba(30,30,30,.28) 60%, rgba(30,30,30,0) 100%);
  transition: background .35s, box-shadow .35s;
}
.header.scrolled {
  background: rgba(30,30,30,.96);
  box-shadow: 0 6px 24px rgba(0,0,0,.3);
}
.header__inner {
  max-width: var(--maxw); margin: 0 auto; padding: 0 24px;
  height: var(--header-h); display: flex; align-items: center; justify-content: space-between; gap: 20px;
}
.header__logo { display: flex; align-items: center; gap: 11px; }
.header__logo-icon {
  width: 44px; height: 44px; border-radius: 10px; flex: none;
  background: linear-gradient(135deg, var(--c-orange), var(--c-orange-deep));
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 20px;
  box-shadow: 0 6px 16px rgba(232,122,32,.4);
}
.header__logo-name { font-size: 19px; font-weight: 800; color: #fff; letter-spacing: 2px; display: block; line-height: 1.15; }
.header__logo-sub { font-size: 10px; color: rgba(255,255,255,.72); letter-spacing: 3px; display: block; margin-top: 2px; }

.header__nav { display: flex; align-items: center; gap: 2px; }
.nav-item { position: relative; }
.nav-link {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 10px 14px; color: rgba(255,255,255,.88); font-size: 14.5px; letter-spacing: 1px;
}
.nav-link:hover, .nav-link.active { color: var(--c-orange-soft); }
.nav-link .fa-chevron-down { font-size: 10px; color: rgba(255,255,255,.5); transition: transform .3s; }
.nav-item:hover .fa-chevron-down { transform: rotate(180deg); }

.nav-drop {
  position: absolute; top: 100%; left: 50%; transform: translateX(-50%) translateY(12px);
  z-index: 10; min-width: 168px; padding: 8px 0;
  background: #1E1E1E; border: 1px solid var(--c-line); border-top: 2px solid var(--c-orange);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  opacity: 0; visibility: hidden; transition: all .3s;
  box-shadow: 0 16px 40px rgba(0,0,0,.4);
}
.nav-item:hover .nav-drop { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.nav-drop a { display: block; padding: 9px 20px; font-size: 13.5px; color: rgba(255,255,255,.82); }
.nav-drop a:hover { color: var(--c-orange-soft); background: rgba(232,122,32,.08); padding-left: 26px; }

.header__actions { display: flex; align-items: center; gap: 12px; }
.header__cta {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 9px 20px; border-radius: 999px;
  color: #fff; background: transparent; border: 1.5px solid var(--c-orange);
  font-size: 13.5px; letter-spacing: 1px; transition: all .3s;
}
.header__cta:hover { background: var(--c-orange); box-shadow: 0 6px 18px rgba(232,122,32,.4); }

.hamburger { display: none; width: 42px; height: 42px; position: relative; z-index: 1002; }
.hamburger span {
  position: absolute; left: 9px; right: 9px; height: 2px; background: #fff; border-radius: 2px;
  transition: all .3s;
}
.hamburger span:nth-child(1) { top: 14px; }
.hamburger span:nth-child(2) { top: 21px; }
.hamburger span:nth-child(3) { top: 28px; }
.hamburger.open span:nth-child(1) { top: 21px; transform: rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { top: 21px; transform: rotate(-45deg); }

/* 移动端侧滑 */
.mobile-nav {
  position: fixed; top: 0; right: -320px; bottom: 0; width: 300px; z-index: 1001;
  background: #1B1B1B; padding: 28px 22px; overflow-y: auto;
  transition: right .35s ease;
}
.mobile-nav.open { right: 0; }
.mobile-nav__overlay {
  position: fixed; inset: 0; z-index: 1000; background: rgba(0,0,0,.5);
  opacity: 0; visibility: hidden; transition: all .3s;
}
.mobile-nav__overlay.open { opacity: 1; visibility: visible; }
.mobile-nav__link {
  display: flex; align-items: center; justify-content: space-between;
  padding: 13px 4px; color: rgba(255,255,255,.9); font-size: 15px; letter-spacing: 1px;
  border-bottom: 1px solid rgba(255,255,255,.07);
}
.mobile-nav__sub { display: none; padding: 2px 0 8px 14px; }
.mobile-nav__sub.open { display: block; }
.mobile-nav__sub a { display: block; padding: 8px 4px; color: rgba(255,255,255,.6); font-size: 13.5px; }
.mobile-nav__sub a:hover { color: var(--c-orange-soft); }

/* ---------- 5. Banner 轮播 ---------- */
.hero { position: relative; height: 86vh; min-height: 560px; background: var(--c-charcoal); overflow: hidden; }
.hero .swiper { height: 100%; }
.hero .swiper-slide { position: relative; }
.hero .swiper-slide img { width: 100%; height: 100%; object-fit: cover; }
.hero .slide-mask {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(20,20,20,.55) 0%, rgba(20,20,20,.38) 45%, rgba(20,20,20,.75) 100%);
}
.hero .slide-mask::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 50% 40%, rgba(232,122,32,.28) 0%, transparent 60%);
}
.hero .slide-box {
  position: absolute; inset: 0; display: flex; flex-direction: column;
  align-items: center; justify-content: center; text-align: center; padding: 0 24px;
}
.hero .slide-tag {
  font-size: 13px; letter-spacing: 6px; color: var(--c-orange-soft);
  margin-bottom: 16px; text-transform: uppercase;
  display: inline-flex; align-items: center; gap: 10px;
}
.hero .slide-tag::before, .hero .slide-tag::after { content: ""; width: 34px; height: 1px; background: rgba(232,122,32,.6); }
.hero .slide-title {
  font-size: clamp(34px, 5vw, 60px); font-weight: 800; color: #fff; letter-spacing: 3px;
  text-shadow: 0 4px 30px rgba(0,0,0,.5);
}
.hero .slide-title .heat-text { color: var(--c-orange-soft); }
.hero .slide-sub { margin-top: 18px; font-size: 16px; color: rgba(255,255,255,.85); letter-spacing: 1px; max-width: 680px; }
.hero .slide-btns { margin-top: 30px; display: flex; gap: 14px; }
.hero .swiper-pagination { bottom: 26px !important; }
.hero .swiper-pagination-bullet { width: 10px; height: 10px; background: rgba(255,255,255,.4); opacity: 1; margin: 0 5px !important; transition: all .3s; }
.hero .swiper-pagination-bullet-active { background: var(--c-orange); width: 26px; border-radius: 6px; }
.hero .swiper-button-prev, .hero .swiper-button-next {
  width: 48px; height: 48px; border-radius: 50%;
  background: rgba(30,30,30,.35); border: 1px solid rgba(255,255,255,.3); color: #fff;
  backdrop-filter: blur(4px);
}
.hero .swiper-button-prev::after, .hero .swiper-button-next::after { font-size: 16px; font-weight: 700; }
.hero .swiper-button-prev:hover, .hero .swiper-button-next:hover { background: var(--c-orange); border-color: var(--c-orange); }

/* 热力波纹 Banner 标题光效 */
.heat-glow { position: relative; display: inline-block; }
.heat-glow::before {
  content: ""; position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  width: 100%; height: 100%; border-radius: 50%;
  background: radial-gradient(circle, rgba(232,122,32,.35) 0%, transparent 70%);
  filter: blur(8px); animation: heatGlow 3s ease-in-out infinite;
  pointer-events: none;
}
@keyframes heatGlow {
  0%, 100% { opacity: .5; transform: translate(-50%, -50%) scale(.9); }
  50% { opacity: 1; transform: translate(-50%, -50%) scale(1.15); }
}

/* ---------- 6. 热力数据 ---------- */
.stats { background: linear-gradient(180deg, var(--c-charcoal), var(--c-dark)); color: #fff; padding: 56px 0; position: relative; overflow: hidden; }
.stats::before {
  content: ""; position: absolute; top: -120px; right: -80px; width: 340px; height: 340px; border-radius: 50%;
  background: radial-gradient(circle, rgba(232,122,32,.16) 0%, transparent 65%);
}
.stats__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; }
.stat { text-align: center; padding: 10px 8px; }
.stat__num { font-size: 46px; font-weight: 800; color: var(--c-orange); line-height: 1.1; }
.stat__num .stat__pre { font-size: 20px; margin-right: 3px; color: var(--c-orange-soft); font-weight: 600; }
.stat__num .unit { font-size: 20px; margin-left: 4px; color: var(--c-orange-soft); font-weight: 600; }
.stat__label { margin-top: 10px; font-size: 14px; color: rgba(255,255,255,.7); letter-spacing: 2px; }
.stat + .stat { border-left: 1px solid rgba(255,255,255,.08); }

/* ---------- 7. 产品卡片（三列热力渐变边框） ---------- */
.prod-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.prod-card {
  position: relative; background: var(--c-dark); border-radius: var(--radius-lg); overflow: hidden;
  border: 1px solid transparent;
  background-image: linear-gradient(var(--c-dark), var(--c-dark)),
    linear-gradient(160deg, var(--c-orange) 0%, var(--c-orange-deep) 40%, #3A3A3A 100%);
  background-origin: border-box; background-clip: padding-box, border-box;
  transition: transform .35s, box-shadow .35s;
}
.prod-card:hover { transform: translateY(-8px); box-shadow: 0 20px 44px rgba(30,30,30,.35); }
.prod-card__img { position: relative; overflow: hidden; aspect-ratio: 4/3; background: #262626; }
.prod-card__img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.prod-card:hover .prod-card__img img { transform: scale(1.07); }
.prod-card__tag {
  position: absolute; top: 12px; left: 12px; z-index: 2;
  background: linear-gradient(135deg, var(--c-orange), var(--c-orange-deep));
  color: #fff; font-size: 12px; padding: 4px 11px; border-radius: 999px; font-weight: 600;
  box-shadow: 0 4px 12px rgba(232,122,32,.4);
}
.prod-card__body { padding: 20px 20px 18px; color: #E9E4DC; }
.prod-card__name { font-size: 17px; font-weight: 700; color: #fff; letter-spacing: 1px; }
.prod-card__data { margin-top: 12px; display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.prod-card__data .item { font-size: 13px; color: rgba(255,255,255,.72); display: flex; align-items: baseline; gap: 6px; }
.prod-card__data .item b { font-family: var(--font-num); color: var(--c-orange-soft); font-weight: 700; }
.prod-card__more {
  display: inline-flex; align-items: center; gap: 6px; margin-top: 16px;
  color: var(--c-orange-soft); font-size: 13.5px; font-weight: 600; letter-spacing: 1px;
}
.prod-card__more i { transition: transform .3s; }
.prod-card:hover .prod-card__more i { transform: translateX(5px); }
.prod-more, .case-more { margin-top: 36px; text-align: center; }

/* ---------- 8. 解决方案（四列场景卡片） ---------- */
.sol-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.sol-card {
  background: rgba(255,255,255,.04); border: 1px solid var(--c-line);
  border-radius: var(--radius-lg); padding: 28px 22px 24px; text-align: center;
  position: relative; overflow: hidden; transition: all .35s;
}
.sol-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, transparent, var(--c-orange), transparent);
  opacity: 0; transition: opacity .3s;
}
.sol-card:hover { border-color: var(--c-orange); transform: translateY(-6px); background: rgba(232,122,32,.06); }
.sol-card:hover::before { opacity: 1; }
.sol-card__icon {
  width: 62px; height: 62px; margin: 0 auto 18px; border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--c-orange), var(--c-orange-deep));
  color: #fff; font-size: 24px; display: flex; align-items: center; justify-content: center;
  box-shadow: 0 8px 22px rgba(232,122,32,.35);
}
.sol-card__name { font-size: 17px; font-weight: 700; color: #fff; letter-spacing: 1px; }
.sol-card__desc { margin-top: 10px; font-size: 13px; color: #A8A29B; line-height: 1.75; }
.sol-card__temp { margin-top: 16px; font-size: 12px; color: var(--c-orange-soft); letter-spacing: 1px; display: inline-flex; align-items: center; gap: 6px; }
/* 温度计装饰 */
.sol-card__bar { margin-top: 14px; height: 4px; border-radius: 2px; background: rgba(255,255,255,.1); position: relative; }
.sol-card__bar::after {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 65%;
  border-radius: 2px; background: linear-gradient(90deg, var(--c-orange), var(--c-orange-soft));
}

/* ---------- 9. 加热实景（全宽幅） ---------- */
.real { position: relative; height: 60vh; min-height: 420px; overflow: hidden; background: var(--c-charcoal); }
.real .swiper { height: 100%; }
.real .swiper-slide img { width: 100%; height: 100%; object-fit: cover; }
.real__mask { position: absolute; inset: 0; background: rgba(20,20,20,.55); }
.real__box {
  position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; padding: 0 24px; z-index: 2;
}
.real__title { font-size: clamp(26px, 3.6vw, 42px); font-weight: 800; color: #fff; letter-spacing: 4px; }
.real__title em { font-style: normal; color: var(--c-orange-soft); }
.real__sub { margin-top: 14px; color: rgba(255,255,255,.8); font-size: 15px; letter-spacing: 2px; }

/* ---------- 10. 案例卡片 ---------- */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.case-grid--single { grid-template-columns: 1fr; max-width: 560px; margin: 0 auto; }
.case-card {
  background: #fff; border-radius: var(--radius-lg); overflow: hidden;
  border: 1px solid var(--c-line-light); transition: all .35s;
}
.case-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); border-color: transparent; }
.case-card__img { position: relative; aspect-ratio: 16/10; overflow: hidden; background: #EDE8E0; }
.case-card__img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.case-card:hover .case-card__img img { transform: scale(1.06); }
.case-card__badge {
  position: absolute; top: 0; right: 0; padding: 6px 14px 6px 18px;
  background: var(--c-orange); color: #fff; font-size: 12px; font-weight: 600; letter-spacing: 1px;
  clip-path: polygon(12px 0, 100% 0, 100% 100%, 12px 100%, 0 50%);
}
.case-card__body { padding: 20px 20px 22px; }
.case-card__name { font-size: 16px; font-weight: 700; color: var(--c-dark); }
.case-card__tags { margin-top: 12px; display: flex; flex-wrap: wrap; gap: 8px; }
.case-card__tags span {
  font-size: 12px; padding: 3px 10px; border-radius: 999px;
  background: rgba(232,122,32,.1); color: var(--c-orange-deep); font-weight: 600;
}
.case-card__desc { margin-top: 10px; font-size: 13px; color: var(--c-gray); line-height: 1.75; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* ---------- 11. 技术能力（四列+橙红分隔线） ---------- */
.ability-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.ability {
  padding: 30px 24px; text-align: center; position: relative;
  border-left: 1px solid rgba(232,122,32,.35);
}
.ability:first-child { border-left: 0; }
.ability__icon {
  width: 58px; height: 58px; margin: 0 auto 16px; border-radius: 50%;
  border: 1.5px solid var(--c-orange); color: var(--c-orange-soft); font-size: 22px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(232,122,32,.08); transition: all .3s;
}
.ability:hover .ability__icon { background: var(--c-orange); color: #fff; box-shadow: 0 8px 22px rgba(232,122,32,.4); }
.ability__name { font-size: 16px; font-weight: 700; color: #fff; letter-spacing: 1px; }
.ability__data { margin-top: 8px; font-size: 13px; color: var(--c-orange-soft); font-family: var(--font-num); }
.ability__desc { margin-top: 6px; font-size: 12.5px; color: #A8A29B; }

/* ---------- 12. 资质认证 ---------- */
.cert-wall { display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; }
.cert {
  background: #fff; border: 1px solid var(--c-line-light); border-radius: var(--radius-md);
  padding: 22px 10px; text-align: center; transition: all .3s;
}
.cert:hover { border-color: var(--c-orange); box-shadow: var(--shadow-card); transform: translateY(-4px); }
.cert__icon { color: var(--c-orange); font-size: 26px; }
.cert__name { margin-top: 10px; font-size: 13px; font-weight: 600; color: var(--c-dark); }

/* ---------- 13. 新闻（左图右文） ---------- */
.news-list { display: flex; flex-direction: column; gap: 22px; }
.news-item {
  display: flex; gap: 26px; background: #fff; border-radius: var(--radius-lg);
  border: 1px solid var(--c-line-light); padding: 16px; transition: all .3s;
}
.news-item:hover { box-shadow: var(--shadow); border-color: transparent; transform: translateX(4px); }
.news-item__img { flex: 0 0 300px; aspect-ratio: 16/10; border-radius: var(--radius-md); overflow: hidden; background: #EDE8E0; }
.news-item__img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.news-item:hover .news-item__img img { transform: scale(1.05); }
.news-item__body { flex: 1; display: flex; flex-direction: column; justify-content: center; padding-right: 8px; }
.news-item__date { font-size: 12px; color: var(--c-orange); letter-spacing: 1px; font-family: var(--font-num); }
.news-item__title { margin-top: 8px; font-size: 18px; font-weight: 700; color: var(--c-dark); }
.news-item__title:hover { color: var(--c-orange); }
.news-item__desc { margin-top: 10px; font-size: 13.5px; color: var(--c-gray); line-height: 1.8; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-item__more { margin-top: 12px; color: var(--c-orange); font-size: 13px; font-weight: 600; letter-spacing: 1px; }

/* ---------- 14. CTA ---------- */
.cta { background: linear-gradient(120deg, var(--c-orange-deep), var(--c-orange) 50%, #F2A35B); padding: 66px 0; position: relative; overflow: hidden; }
.cta::after {
  content: ""; position: absolute; right: -120px; top: -120px; width: 380px; height: 380px; border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,.18) 0%, transparent 65%);
}
.cta__inner { position: relative; display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
.cta__title { font-size: 28px; font-weight: 800; color: #fff; letter-spacing: 2px; }
.cta__sub { margin-top: 8px; color: rgba(255,255,255,.9); font-size: 15px; letter-spacing: 1px; }
.cta__btns { display: flex; gap: 14px; }

/* ---------- 15. 底部 ---------- */
.footer { background: var(--c-charcoal); color: #C9C4BC; }
.footer__grid {
  display: grid; grid-template-columns: 1.4fr 1fr 1.1fr 1fr; gap: 40px;
  padding: 60px 0 44px;
}
.footer__brand { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.footer__brand .name { font-size: 20px; font-weight: 800; color: #fff; letter-spacing: 2px; }
.footer__brand .sub { font-size: 11px; color: var(--c-orange-soft); letter-spacing: 3px; }
.footer__desc { font-size: 13.5px; line-height: 1.9; color: #A8A29B; }
.footer__col-title {
  font-size: 15px; font-weight: 700; color: #fff; letter-spacing: 2px; margin-bottom: 18px; position: relative; padding-left: 14px;
}
.footer__col-title::before { content: ""; position: absolute; left: 0; top: 50%; transform: translateY(-50%); width: 4px; height: 16px; background: var(--c-orange); border-radius: 2px; }
.footer__links { display: flex; flex-direction: column; gap: 11px; }
.footer__links a { font-size: 13.5px; color: #A8A29B; display: inline-flex; align-items: center; gap: 8px; }
.footer__links a::before { content: "\f054"; font-family: "Font Awesome 6 Free"; font-weight: 900; font-size: 10px; color: var(--c-orange); }
.footer__links a:hover { color: var(--c-orange-soft); padding-left: 4px; }
.footer__contact-item { display: flex; gap: 12px; margin-bottom: 14px; font-size: 13.5px; color: #A8A29B; }
.footer__contact-item i { color: var(--c-orange); margin-top: 4px; width: 16px; text-align: center; flex: none; }
.footer__qr { display: flex; align-items: center; gap: 14px; }
.footer__qr img { width: 108px; height: 108px; border-radius: var(--radius-sm); border: 2px solid #3A3A3A; background: #fff; }
.footer__qr-text { font-size: 12.5px; color: #A8A29B; line-height: 1.9; }

/* 页脚折叠(产品分类 / 技术咨询)——仅手机端启用,PC 端保持原样直接显示链接 */
.footer-acc { display: flex; flex-direction: column; }
.footer-acc__body { display: block; }
.footer-acc__btn {
  width: 100%; background: none; border: 0;
  display: none; align-items: center; justify-content: space-between;
  padding: 12px 2px; font-size: 14px; font-weight: 600; color: #E9E4DC; letter-spacing: 1px;
}
.footer-acc__btn i { display: none; color: var(--c-orange); font-size: 12px; transition: transform .3s; }
.footer-acc__item + .footer-acc__item { display: none; }
.footer-acc__tip { font-size: 12.5px; color: #A8A29B; line-height: 1.8; }
.footer-acc__link {
  display: inline-flex; align-items: center; gap: 8px; margin-top: 12px;
  font-size: 13.5px; font-weight: 600; color: var(--c-orange); letter-spacing: 1px;
}
.footer-acc__link:hover { color: var(--c-orange-soft); }

.friend-links {
  border-top: 1px solid rgba(255,255,255,.08); padding: 20px 0;
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px 22px;
}
.friend-links__label { font-size: 13px; color: var(--c-orange-soft); letter-spacing: 2px; white-space: nowrap; }
.friend-links a { font-size: 12.5px; color: #8F8A83; display: inline-flex; align-items: center; gap: 6px; }
.friend-links a::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: rgba(232,122,32,.5); }
.friend-links a:hover { color: var(--c-orange-soft); }
.friend-links__item::before { display: none; }
.friend-links__item img { width: auto; height: 22px; max-width: 90px; object-fit: contain; opacity: .75; filter: grayscale(.5); transition: opacity .3s, filter .3s; }
.friend-links__item:hover img { opacity: 1; filter: none; }

.footer__bottom { border-top: 1px solid rgba(255,255,255,.08); padding: 18px 0; font-size: 12.5px; color: #7F7A74; }
.footer__bottom-inner { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.footer__bottom a:hover { color: var(--c-orange-soft); }

/* ---------- 16. 悬浮元素 ---------- */
.back-top {
  position: fixed; right: 26px; bottom: 26px; z-index: 900;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--c-dark); color: #fff; font-size: 16px;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden; transform: translateY(16px);
  transition: all .35s; box-shadow: 0 8px 20px rgba(0,0,0,.25);
}
.back-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.back-top:hover { background: var(--c-orange); }

.service-btn {
  position: fixed; right: 26px; bottom: 96px; z-index: 900;
  width: 56px; height: 56px; border-radius: 50%;
  background: linear-gradient(135deg, var(--c-orange), var(--c-orange-deep));
  color: #fff; font-size: 22px;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 10px 28px rgba(232,122,32,.45);
  transition: transform .3s;
}
.service-btn:hover { transform: scale(1.1) rotate(8deg); }
.service-btn::before, .service-btn::after {
  content: ""; position: absolute; inset: 0; border-radius: 50%;
  border: 2px solid var(--c-orange); animation: svcPulse 2.2s ease-out infinite;
}
.service-btn::after { animation-delay: 1.1s; }
@keyframes svcPulse {
  0% { transform: scale(1); opacity: .7; }
  70% { transform: scale(1.55); opacity: 0; }
  100% { transform: scale(1.55); opacity: 0; }
}

/* ---------- 17. 内页公共 ---------- */
.page-banner {
  position: relative; height: 300px; background: var(--c-charcoal); overflow: hidden;
  display: flex; align-items: center; justify-content: center; text-align: center;
}
.page-banner__bg { position: absolute; inset: 0; background-size: cover; background-position: center; opacity: .35; }
.page-banner__bg::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(30,30,30,.6), rgba(30,30,30,.85)); }
.page-banner__title { position: relative; z-index: 2; font-size: 34px; font-weight: 800; color: #fff; letter-spacing: 4px; }
.page-banner__title em { font-style: normal; color: var(--c-orange-soft); }
.page-banner__sub { position: relative; z-index: 2; margin-top: 10px; color: rgba(255,255,255,.7); font-size: 14px; letter-spacing: 3px; }

.breadcrumb { padding: 18px 0; font-size: 13px; color: var(--c-gray); background: var(--c-cream); border-bottom: 1px solid var(--c-line-light); }
.breadcrumb-inner { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.breadcrumb-inner a:hover { color: var(--c-orange); }
.breadcrumb-inner .sep { color: var(--c-line-light); }
.breadcrumb-inner .cur { color: var(--c-orange); }

.page-wrap { display: flex; gap: 34px; align-items: flex-start; padding: 48px 0 70px; }
.page-main { flex: 1; min-width: 0; }

/* 侧边栏 */
.sidebar { flex: 0 0 270px; position: sticky; top: calc(var(--header-h) + 20px); }
.side-panel { background: #fff; border: 1px solid var(--c-line-light); border-radius: var(--radius-md); overflow: hidden; margin-bottom: 22px; }
.side-panel__title {
  padding: 14px 20px; background: var(--c-dark); color: #fff; font-size: 15px; font-weight: 700; letter-spacing: 2px;
  display: flex; align-items: center; gap: 10px;
}
.side-panel__title i { color: var(--c-orange); }
.side-panel__body { padding: 10px 0; }
.side-link { display: block; padding: 11px 22px; font-size: 14px; color: var(--c-dark); position: relative; transition: all .25s; }
.side-link::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; background: var(--c-orange); transform: scaleY(0); transition: transform .25s; }
.side-link:hover, .side-link.active { background: rgba(232,122,32,.06); color: var(--c-orange-deep); }
.side-link:hover::before, .side-link.active::before { transform: scaleY(1); }
.side-link .cnt { float: right; color: var(--c-gray); font-size: 12px; }
.side-contact { padding: 20px; text-align: center; }
.side-contact__icon { width: 52px; height: 52px; margin: 0 auto 12px; border-radius: 50%; background: rgba(232,122,32,.1); color: var(--c-orange); font-size: 22px; display: flex; align-items: center; justify-content: center; }
.side-contact__tel { font-family: var(--font-num); font-size: 20px; font-weight: 800; color: var(--c-orange); }
.side-contact__tip { margin-top: 6px; font-size: 12.5px; color: var(--c-gray); }

/* 分页 */
.pagination { display: flex; justify-content: center; gap: 8px; margin-top: 42px; }
.pagination a, .pagination span {
  min-width: 38px; height: 38px; padding: 0 12px; display: inline-flex; align-items: center; justify-content: center;
  background: #fff; border: 1px solid var(--c-line-light); border-radius: var(--radius-sm);
  font-size: 13.5px; color: var(--c-dark); transition: all .25s;
}
.pagination a:hover { border-color: var(--c-orange); color: var(--c-orange); }
.pagination .active, .pagination span.current, .pagination .page-num-current { background: var(--c-orange); border-color: var(--c-orange); color: #fff; font-weight: 600; }
.pagination .disabled { opacity: .5; cursor: not-allowed; }

/* ---------- 18. 内页列表网格 ---------- */
.p-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.p-card { background: #fff; border-radius: var(--radius-md); overflow: hidden; border: 1px solid var(--c-line-light); transition: all .3s; }
.p-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
.p-card__img { position: relative; aspect-ratio: 4/3; overflow: hidden; background: #EDE8E0; }
.p-card__img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.p-card:hover .p-card__img img { transform: scale(1.06); }
.p-card__img .cat {
  position: absolute; left: 10px; top: 10px; z-index: 2;
  background: rgba(30,30,30,.7); color: var(--c-orange-soft); font-size: 11px; padding: 3px 10px; border-radius: 999px; backdrop-filter: blur(3px);
}
.p-card__body { padding: 16px 18px; }
.p-card__name { font-size: 15px; font-weight: 700; color: var(--c-dark); display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; }
.p-card__name:hover { color: var(--c-orange); }
.p-card__data { margin-top: 10px; display: flex; flex-wrap: wrap; gap: 6px 14px; font-size: 12px; color: var(--c-gray); }
.p-card__data b { color: var(--c-orange-deep); font-family: var(--font-num); }

/* 新闻列表页卡片 */
.news-page-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.news-page-card { display: flex; gap: 18px; background: #fff; border: 1px solid var(--c-line-light); border-radius: var(--radius-md); padding: 14px; transition: all .3s; }
.news-page-card:hover { box-shadow: var(--shadow); border-color: transparent; }
.news-page-card__img { flex: 0 0 190px; aspect-ratio: 4/3; border-radius: var(--radius-sm); overflow: hidden; background: #EDE8E0; }
.news-page-card__img img { width: 100%; height: 100%; object-fit: cover; }
.news-page-card__body { flex: 1; display: flex; flex-direction: column; justify-content: center; }
.news-page-card__date { font-size: 11.5px; color: var(--c-orange); font-family: var(--font-num); }
.news-page-card__name { margin-top: 6px; font-size: 15px; font-weight: 700; color: var(--c-dark); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-page-card__name:hover { color: var(--c-orange); }

/* ---------- 19. 详情页 ---------- */
.prod-detail { display: flex; gap: 44px; background: #fff; border-radius: var(--radius-lg); padding: 30px; box-shadow: var(--shadow-card); }
.prod-detail__gallery { flex: 0 0 46%; }
.prod-detail__main-img { border-radius: var(--radius-md); overflow: hidden; aspect-ratio: 4/3; background: #EDE8E0; border: 1px solid var(--c-line-light); }
.prod-detail__main-img img { width: 100%; height: 100%; object-fit: cover; }
.prod-detail__info { flex: 1; min-width: 0; }
.prod-detail__name { font-size: 26px; font-weight: 800; color: var(--c-dark); letter-spacing: 1px; }
.prod-detail__cat { display: inline-block; margin-top: 10px; font-size: 12px; color: var(--c-orange-deep); background: rgba(232,122,32,.1); padding: 3px 12px; border-radius: 999px; }
.prod-detail__brief { margin-top: 16px; font-size: 14px; color: var(--c-gray); line-height: 1.9; }
.prod-detail__specs { margin-top: 22px; border-top: 1px dashed var(--c-line-light); padding-top: 18px; display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.prod-spec {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  background: var(--c-cream); border-radius: var(--radius-sm); padding: 11px 16px;
}
.prod-spec .k { font-size: 13px; color: var(--c-gray); display: inline-flex; align-items: center; gap: 7px; }
.prod-spec .k i { color: var(--c-orange); width: 16px; }
.prod-spec .v { font-family: var(--font-num); font-size: 15px; font-weight: 700; color: var(--c-dark); }
.prod-detail__cta { margin-top: 26px; display: flex; gap: 14px; flex-wrap: wrap; }

/* 详情正文 */
.detail-content { margin-top: 40px; background: #fff; border-radius: var(--radius-lg); padding: 34px; box-shadow: var(--shadow-card); overflow-x: auto; -webkit-overflow-scrolling: touch; }
.detail-content h3 { font-size: 19px; color: var(--c-dark); padding-left: 12px; border-left: 4px solid var(--c-orange); margin-bottom: 18px; }
.detail-content p { margin-bottom: 14px; font-size: 14.5px; color: #4A4642; line-height: 1.95; }
.detail-content img { border-radius: var(--radius-sm); margin: 12px auto; }
.detail-content table { width: 100%; border-collapse: collapse; margin: 16px 0; }
.detail-content th, .detail-content td { border: 1px solid var(--c-line-light); padding: 10px 14px; font-size: 13.5px; }
.detail-content th { background: var(--c-dark); color: #fff; font-weight: 600; }
.detail-content td { color: #4A4642; }
.detail-content ul { margin: 12px 0; padding-left: 4px; }
.detail-content ul li { position: relative; padding-left: 20px; margin-bottom: 8px; font-size: 14.5px; color: #4A4642; }
.detail-content ul li::before { content: ""; position: absolute; left: 0; top: 10px; width: 8px; height: 8px; border-radius: 50%; background: var(--c-orange); }

/* 详情导航 */
.detail-nav { display: flex; justify-content: space-between; gap: 20px; margin-top: 26px; font-size: 13.5px; color: var(--c-gray); flex-wrap: wrap; }
.detail-nav a:hover { color: var(--c-orange); }
.detail-nav .prev i { margin-right: 6px; }
.detail-nav .next i { margin-left: 6px; }

/* ---------- 20. 单页（关于/技术/联系） ---------- */
.page-single { background: #fff; border-radius: var(--radius-lg); padding: 40px; box-shadow: var(--shadow-card); overflow-x: auto; -webkit-overflow-scrolling: touch; }
.page-single h2 { font-size: 22px; color: var(--c-dark); padding-left: 14px; border-left: 4px solid var(--c-orange); margin: 30px 0 16px; }
.page-single h2:first-child { margin-top: 0; }
.page-single p { margin-bottom: 14px; font-size: 14.5px; color: #4A4642; line-height: 2; }
.page-single img { border-radius: var(--radius-sm); margin: 10px auto; }

/* 关于我们页：内容卡片留白，区块不再贴边（贴边会被圆角/overflow 裁切显得"被切割"） */
.page-single--about { padding: 36px; }

/* 关于页特色块 */
.about-hero { display: grid; grid-template-columns: 1.2fr 1fr; gap: 40px; align-items: center; }
.about-hero__img { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow); aspect-ratio: 4/3; }
.about-hero__img img { width: 100%; height: 100%; object-fit: cover; }
.about-hero__title { font-size: 26px; font-weight: 800; color: var(--c-dark); }
.about-hero__title em { font-style: normal; color: var(--c-orange); }
.about-hero__text { margin-top: 14px; font-size: 14.5px; color: #5A564F; line-height: 2; }
.about-points { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 44px; }
.about-point { background: var(--c-cream); border: 1px solid var(--c-line-light); border-radius: var(--radius-md); padding: 26px 22px; transition: all .3s; }
.about-point:hover { border-color: var(--c-orange); transform: translateY(-5px); box-shadow: var(--shadow-card); }
.about-point__icon { color: var(--c-orange); font-size: 26px; }
.about-point__name { margin-top: 12px; font-size: 16px; font-weight: 700; color: var(--c-dark); }
.about-point__desc { margin-top: 8px; font-size: 13.5px; color: var(--c-gray); line-height: 1.8; }

/* 历程时间线 */
.timeline { margin-top: 32px; position: relative; padding-left: 28px; }
.timeline::before { content: ""; position: absolute; left: 5px; top: 6px; bottom: 6px; width: 2px; background: linear-gradient(180deg, var(--c-orange), rgba(232,122,32,.1)); }
.tl-item { position: relative; padding: 0 0 16px 22px; }
.tl-item::before { content: ""; position: absolute; left: -28px; top: 5px; width: 12px; height: 12px; border-radius: 50%; background: var(--c-cream); border: 2px solid var(--c-orange); }
.tl-item__year { font-family: var(--font-num); font-size: 16px; font-weight: 800; color: var(--c-orange); }
.tl-item__txt { margin-top: 3px; font-size: 13px; color: #4A4642; }

/* 荣誉墙 */
.honor-wall { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 24px; }
.honor { background: var(--c-cream); border: 1px solid var(--c-line-light); border-radius: var(--radius-md); padding: 13px 6px; text-align: center; }
.honor__icon { color: var(--c-orange); font-size: 19px; }
.honor__name { margin-top: 5px; font-size: 12px; font-weight: 600; color: var(--c-dark); }

/* ---------- 21. 表单 ---------- */
.form-card { background: #fff; border-radius: var(--radius-lg); padding: 34px; box-shadow: var(--shadow-card); }
.form-row { margin-bottom: 18px; }
.form-row label { display: block; font-size: 13.5px; font-weight: 600; color: var(--c-dark); margin-bottom: 8px; letter-spacing: 1px; }
.form-row label .req { color: var(--c-orange); margin-left: 4px; }
.form-row input[type="text"], .form-row input[type="tel"], .form-row input[type="email"], .form-row select, .form-row textarea {
  width: 100%; padding: 12px 16px; border: 1px solid var(--c-line-light); border-radius: var(--radius-sm);
  background: var(--c-cream); color: var(--c-dark); transition: all .25s; outline: none;
}
.form-row input:focus, .form-row select:focus, .form-row textarea:focus { border-color: var(--c-orange); background: #fff; box-shadow: 0 0 0 3px rgba(232,122,32,.12); }
.form-row textarea { resize: vertical; min-height: 120px; }
.form-row select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23E87A20'%3E%3Cpath d='M7 10l5 5 5-5z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; background-size: 16px; }
.form-row__half { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-tip { margin-top: 14px; font-size: 12.5px; color: var(--c-gray); display: flex; align-items: center; gap: 8px; }
.form-tip i { color: var(--c-orange); }

/* 联系信息卡片 */
.contact-info { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.contact-info__item { background: #fff; border: 1px solid var(--c-line-light); border-radius: var(--radius-md); padding: 24px 22px; display: flex; gap: 16px; align-items: flex-start; transition: all .3s; }
.contact-info__item:hover { border-color: var(--c-orange); box-shadow: var(--shadow-card); transform: translateY(-3px); }
.contact-info__icon { width: 46px; height: 46px; flex: none; border-radius: var(--radius-sm); background: rgba(232,122,32,.1); color: var(--c-orange); font-size: 19px; display: flex; align-items: center; justify-content: center; }
.contact-info__label { font-size: 12px; color: var(--c-gray); letter-spacing: 2px; }
.contact-info__value { margin-top: 5px; font-size: 15.5px; font-weight: 700; color: var(--c-dark); }
.contact-info__value small { font-size: 12.5px; font-weight: 400; color: var(--c-gray); display: block; margin-top: 3px; }

/* ---------- 22. 搜索 ---------- */
.search-form { display: flex; gap: 10px; max-width: 620px; margin: 0 auto; }
.search-form input[type="text"] { flex: 1; padding: 13px 20px; border: 1px solid var(--c-line-light); border-radius: 999px; outline: none; background: #fff; transition: all .25s; }
.search-form input[type="text"]:focus { border-color: var(--c-orange); box-shadow: 0 0 0 3px rgba(232,122,32,.12); }
.search-form button { padding: 13px 28px; border-radius: 999px; }
.search-result { margin-top: 30px; }
.search-result__head { font-size: 14px; color: var(--c-gray); margin-bottom: 20px; }
.search-result__head b { color: var(--c-orange); }
.search-item { background: #fff; border: 1px solid var(--c-line-light); border-radius: var(--radius-md); padding: 20px 24px; margin-bottom: 16px; transition: all .25s; }
.search-item:hover { border-color: var(--c-orange); box-shadow: var(--shadow-card); }
.search-item__title { font-size: 16px; font-weight: 700; color: var(--c-dark); }
.search-item__title:hover { color: var(--c-orange); }
.search-item__desc { margin-top: 8px; font-size: 13.5px; color: var(--c-gray); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.search-item__meta { margin-top: 8px; font-size: 12px; color: var(--c-orange); }

/* ---------- 23. 懒加载占位 ---------- */
img[data-src] { opacity: 0; transition: opacity .5s; }
img[data-src].loaded { opacity: 1; }

/* ---------- 23b. 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}

/* ---------- 24. 响应式 ≤1024px（手机+平板统一单列版式，PC ≥1024 保持不变） ---------- */
@media (max-width: 1023px) {
  .sec { padding: 48px 0; }
  .sec-head__title { font-size: 24px; }
  .container { padding: 0 16px; }

  .header__nav { display: none; }
  .header__actions .header__cta { display: none; }
  .hamburger { display: block; }

  .hero { height: 66vh; min-height: 440px; }
  .hero .slide-sub { font-size: 14px; }
  .hero .slide-btns { flex-direction: column; align-items: center; }
  .hero .swiper-button-prev, .hero .swiper-button-next { display: none; }

  .stats__grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .stat { padding: 6px 4px; }
  .stat + .stat { border-left: 0; }
  .stat__num { font-size: 28px; }
  .stat__num .stat__pre, .stat__num .unit { font-size: 16px; }
  .stat__label { margin-top: 6px; font-size: 12px; letter-spacing: 1px; }

  .prod-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .p-list { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .p-card__body { padding: 10px 10px 12px; }
  .p-card__name { font-size: 13px; }
  .p-card__data { margin-top: 6px; font-size: 11px; gap: 4px 8px; }
  .p-card__img .cat { left: 6px; top: 6px; font-size: 10px; padding: 3px 8px; }
  .prod-card__body { padding: 14px 12px 12px; }
  .prod-card__name { font-size: 15px; }
  .prod-card__data { margin-top: 8px; gap: 6px 4px; }
  .prod-card__data .item { font-size: 12px; }
  .prod-card__more { font-size: 12px; margin-top: 10px; }
  .prod-more, .case-more { margin-top: 26px; }
  .sol-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .sol-card { padding: 18px 12px 14px; }
  .sol-card__icon { width: 44px; height: 44px; margin: 0 auto 10px; font-size: 18px; }
  .sol-card__name { font-size: 15px; }
  .sol-card__desc { margin-top: 6px; font-size: 12px; }
  .sol-card__temp { margin-top: 8px; font-size: 11px; }
  .sol-card__bar { margin-top: 8px; }
  .case-grid { grid-template-columns: 1fr; gap: 20px; }
  .ability-grid { grid-template-columns: repeat(2, 1fr); }
  .ability { border-left: 0; border-top: 1px solid rgba(232,122,32,.25); padding: 18px 12px 16px; }
  .ability:nth-child(odd) { border-right: 1px solid rgba(232,122,32,.25); }
  .ability__icon { width: 42px; height: 42px; margin: 0 auto 10px; font-size: 16px; border-width: 1px; }
  .ability__name { font-size: 15px; }
  .ability__data { margin-top: 6px; font-size: 12px; }
  .ability__desc { margin-top: 4px; font-size: 11.5px; }
  .cert-wall { grid-template-columns: repeat(3, 1fr); }
  .honor-wall { grid-template-columns: repeat(3, 1fr); }

  .news-list { gap: 14px; }
  .news-item { flex-direction: column; padding: 8px; }
  .news-item__img { flex: none; width: 100%; }
  .news-item__date { font-size: 11px; }
  .news-item__title { margin-top: 6px; font-size: 16px; }
  .news-item__desc { margin-top: 6px; font-size: 12.5px; line-height: 1.7; }
  .news-item__more { margin-top: 8px; font-size: 12px; }
  .news-page-list { grid-template-columns: 1fr; }

  .real { height: 46vh; }

  .footer__grid { grid-template-columns: 1fr 1fr; gap: 26px 20px; }
  .footer__grid > div:first-child { grid-column: 1 / -1; }
  .footer__grid > div:last-child { grid-column: 1 / -1; display: flex; flex-wrap: wrap; align-items: flex-start; column-gap: 36px; }
  .footer__grid > div:last-child .footer__col-title { flex-basis: 100%; }
  .footer__brand { margin-bottom: 12px; }
  .footer__desc { font-size: 13px; line-height: 1.85; }
  .footer__col-title { font-size: 14px; margin-bottom: 14px; }
  .footer__links { gap: 10px; }
  .footer-acc__body { display: none; }
  .footer-acc__item { border-top: 1px solid rgba(255,255,255,.08); }
  .footer-acc__item + .footer-acc__item { display: block; margin-top: 0; }
  .footer-acc__btn { display: flex; cursor: pointer; }
  .footer-acc__btn i { display: inline-block; }
  .footer-acc__item.is-open .footer-acc__body { display: block; }
  .footer-acc__item.is-open .footer-acc__btn i { transform: rotate(180deg); }

  .page-wrap { flex-direction: column; align-items: stretch; padding: 32px 0 56px; }
  .sidebar { flex: none; width: 100%; position: static; }
  .prod-detail { flex-direction: column; padding: 20px; }
  .prod-detail__gallery { flex: none; }
  .prod-detail__specs { grid-template-columns: 1fr; }
  .about-hero { grid-template-columns: 1fr; }
  .page-single--about { padding: 24px 16px; }
  .about-points { grid-template-columns: repeat(3, 1fr); gap: 12px; }
  .contact-info { grid-template-columns: 1fr; }
  .form-row__half { grid-template-columns: 1fr; }
  .cta__inner { justify-content: center; text-align: center; }
  .cta__btns { justify-content: center; }
}

/* 内容表格响应式：手机窄屏(≤640px)每行改为一张卡片、参数竖排，超宽表格不再撑破页面 */
@media (max-width: 640px) {
  .page-single--about { padding: 18px 12px; }
  /* 三大核心能力：手机窄屏仍保持一行三张，卡片紧凑化保证可读 */
  .about-point { padding: 14px 8px; border-radius: 8px; }
  .about-point__icon { font-size: 18px; }
  .about-point__name { margin-top: 8px; font-size: 13px; }
  .about-point__desc { margin-top: 4px; font-size: 11px; line-height: 1.6; }

  .detail-content table, .page-single table { display: block; width: 100%; border-collapse: collapse; }
  .detail-content table > *, .page-single table > * { display: block; }
  .detail-content tr, .page-single tr {
    display: block; margin-bottom: 14px;
    border: 1px solid var(--c-line-light); border-radius: 10px; overflow: hidden;
  }
  .detail-content th, .detail-content td, .page-single th, .page-single td {
    display: block; width: 100%; border: 0; padding: 10px 14px; font-size: 13.5px;
    border-bottom: 1px dashed var(--c-line-light);
  }
  .detail-content tr > :last-child, .page-single tr > :last-child { border-bottom: 0; }
  .detail-content th, .page-single th { font-weight: 700; color: #fff; }
  .detail-content td:first-child, .page-single td:first-child {
    font-size: 14.5px; font-weight: 700; color: var(--c-dark);
    background: rgba(232,122,32,.08); border-bottom: 1px solid var(--c-line-light);
  }
}