/* ============================================================
   东莞岑海新材料有限公司 · 官网样式
   设计基调: 简约 / 高级 / 工业科技感  主色: 3M红
   ============================================================ */

:root {
  --red: #e82127;
  --red-dark: #c1171d;
  --ink: #12161c;
  --ink-2: #1b212a;
  --dark: #0d1117;
  --gray-900: #1a1f27;
  --gray-600: #5a6472;
  --gray-400: #98a1ad;
  --gray-200: #e7eaef;
  --gray-100: #f5f6f8;
  --white: #ffffff;
  --font: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", -apple-system, sans-serif;
  --container: 1280px;
  --ease: cubic-bezier(.22,.61,.36,1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--white);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 40px;
}

/* ---------- 通用动效 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity .8s var(--ease), transform .8s var(--ease);
}
.reveal.visible { opacity: 1; transform: none; }
.reveal-d1 { transition-delay: .08s; }
.reveal-d2 { transition-delay: .16s; }
.reveal-d3 { transition-delay: .24s; }
.reveal-d4 { transition-delay: .32s; }
.reveal-d5 { transition-delay: .40s; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 34px;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: .06em;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all .35s var(--ease);
  position: relative;
}
.btn svg { transition: transform .35s var(--ease); }
.btn:hover svg { transform: translateX(5px); }

.btn-red { background: var(--red); color: #fff; }
.btn-red:hover { background: var(--red-dark); box-shadow: 0 12px 28px rgba(232,33,39,.32); }

.btn-line { border-color: rgba(255,255,255,.5); color: #fff; background: transparent; }
.btn-line:hover { border-color: #fff; background: rgba(255,255,255,.08); }

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

.btn-sm { padding: 11px 24px; font-size: 14px; }

/* ============================================================
   头部导航
   ============================================================ */
.topbar {
  background: var(--dark);
  color: var(--gray-400);
  font-size: 13px;
  position: relative;
  z-index: 60;
}
.topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 38px;
}
.topbar a:hover { color: #fff; }
.topbar .tb-right { display: flex; gap: 26px; align-items: center; }
.topbar .tb-phone { color: #fff; font-weight: 500; letter-spacing: .03em; }
.topbar .tb-phone em { color: var(--red); font-style: normal; margin-right: 6px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: box-shadow .3s, border-color .3s;
}
.site-header.scrolled { box-shadow: 0 6px 30px rgba(13,17,23,.08); border-color: var(--gray-200); }
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 78px;
}

.logo { display: flex; align-items: center; gap: 14px; }
.logo-mark {
  width: 42px; height: 42px;
  object-fit: cover;
  border-radius: 8px;
}
.logo-text .cn { font-size: 20px; font-weight: 700; letter-spacing: .04em; line-height: 1.2; }
.logo-text .en { font-size: 10.5px; color: var(--gray-400); letter-spacing: .22em; text-transform: uppercase; }

.nav { display: flex; align-items: center; gap: 6px; }
.nav a {
  position: relative;
  padding: 28px 17px;
  font-size: 15.5px;
  font-weight: 500;
  color: var(--gray-900);
  transition: color .25s;
}
.nav a::after {
  content: "";
  position: absolute;
  left: 17px; right: 17px; bottom: 18px;
  height: 2px;
  background: var(--red);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s var(--ease);
}
.nav a:hover, .nav a.active { color: var(--red); }
.nav a:hover::after, .nav a.active::after { transform: scaleX(1); }

.nav-cta { margin-left: 14px; }

.menu-toggle {
  display: none;
  width: 44px; height: 44px;
  border: none; background: none; cursor: pointer;
  flex-direction: column; align-items: center; justify-content: center; gap: 6px;
}
.menu-toggle span { width: 24px; height: 2px; background: var(--ink); transition: .3s; }

/* ============================================================
   首屏 HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  color: #fff;
  overflow: hidden;
  background: var(--dark);
}
.hero-bg { position: absolute; inset: 0; }
.hero-bg img { width: 100%; height: 100%; object-fit: cover; opacity: .55; transform: scale(1.06); animation: heroZoom 14s var(--ease) forwards; }
@keyframes heroZoom { to { transform: scale(1); } }
.hero-bg::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(9,12,17,.92) 0%, rgba(9,12,17,.55) 55%, rgba(9,12,17,.25) 100%),
              linear-gradient(0deg, rgba(9,12,17,.85) 0%, transparent 35%);
}
.hero .container { position: relative; z-index: 2; }

.hero-tag {
  display: inline-flex; align-items: center; gap: 12px;
  font-size: 14px; letter-spacing: .28em; color: rgba(255,255,255,.85);
  margin-bottom: 26px;
  text-transform: uppercase;
}
.hero-tag::before { content: ""; width: 46px; height: 1px; background: var(--red); }

.hero h1 {
  font-size: clamp(40px, 5.6vw, 74px);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: .02em;
  margin-bottom: 8px;
}
.hero h1 .red { color: var(--red); }
.hero-sub {
  font-size: clamp(16px, 1.5vw, 20px);
  color: rgba(255,255,255,.72);
  max-width: 640px;
  margin: 22px 0 42px;
  font-weight: 300;
  letter-spacing: .02em;
}
.hero-btns { display: flex; gap: 18px; flex-wrap: wrap; }

.hero-side {
  position: absolute;
  right: 46px; top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  writing-mode: vertical-rl;
  letter-spacing: .5em;
  font-size: 12px;
  color: rgba(255,255,255,.4);
  text-transform: uppercase;
}

.hero-foot {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  z-index: 2;
  border-top: 1px solid rgba(255,255,255,.14);
}
.hero-foot .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 74px;
  font-size: 13.5px;
  color: rgba(255,255,255,.6);
  letter-spacing: .06em;
}
.hero-foot b { color: #fff; font-weight: 600; margin-right: 8px; }
.hero-foot .hf-items { display: flex; gap: 44px; }

/* ============================================================
   通用板块头
   ============================================================ */
.section { padding: 108px 0; }
.section-gray { background: var(--gray-100); }
.section-dark { background: var(--dark); color: #fff; }

.sec-head { margin-bottom: 60px; }
.sec-head.center { text-align: center; }
.sec-head .label {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .3em;
  color: var(--red);
  text-transform: uppercase;
  margin-bottom: 16px;
}
.sec-head .label::before { content: ""; width: 34px; height: 2px; background: var(--red); }
.sec-head.center .label::after { content: ""; width: 34px; height: 2px; background: var(--red); }
.sec-head h2 {
  font-size: clamp(30px, 3.4vw, 44px);
  font-weight: 800;
  letter-spacing: .02em;
  line-height: 1.3;
}
.sec-head h2 .thin { font-weight: 300; }
.sec-head p { margin-top: 16px; color: var(--gray-600); max-width: 640px; font-size: 16.5px; }
.sec-head.center p { margin-left: auto; margin-right: auto; }
.section-dark .sec-head p { color: var(--gray-400); }

.sec-head-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 40px;
  flex-wrap: wrap;
}
.more-link {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 15px; font-weight: 500;
  color: var(--ink);
  padding-bottom: 6px;
  border-bottom: 1px solid var(--ink);
  transition: all .3s;
}
.section-dark .more-link { color: #fff; border-color: rgba(255,255,255,.4); }
.more-link:hover { color: var(--red); border-color: var(--red); gap: 16px; }

/* ============================================================
   资质数据条
   ============================================================ */
.stats-wrap { position: relative; z-index: 5; margin-top: -1px; }
.stats {
  background: var(--red);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.stats::before {
  content: "3M";
  position: absolute;
  right: -30px; top: -60px;
  font-size: 240px;
  font-weight: 900;
  color: rgba(255,255,255,.07);
  letter-spacing: -10px;
  pointer-events: none;
}
.stats .container {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
}
.stat {
  padding: 46px 26px;
  border-left: 1px solid rgba(255,255,255,.18);
  transition: background .3s;
}
.stat:first-child { border-left: none; }
.stat:hover { background: rgba(255,255,255,.06); }
.stat .num {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -.01em;
  display: flex;
  align-items: baseline;
  gap: 4px;
}
.stat .num small { font-size: 18px; font-weight: 500; }
.stat .txt { margin-top: 8px; font-size: 14px; color: rgba(255,255,255,.82); letter-spacing: .04em; }

/* ============================================================
   首页 · 产品中心
   ============================================================ */
.prod-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 26px;
}
.prod-card {
  background: #fff;
  border: 1px solid var(--gray-200);
  overflow: hidden;
  transition: all .45s var(--ease);
  position: relative;
}
.prod-card:hover { transform: translateY(-8px); box-shadow: 0 24px 50px rgba(13,17,23,.12); border-color: transparent; }
.prod-card .pic { position: relative; overflow: hidden; aspect-ratio: 4/3.1; background: var(--gray-100); }
.prod-card .pic img { width: 100%; height: 100%; object-fit: cover; transition: transform .8s var(--ease); }
.prod-card:hover .pic img { transform: scale(1.08); }
.prod-card .pic .idx {
  position: absolute; top: 16px; left: 16px;
  background: rgba(13,17,23,.82);
  color: #fff;
  font-size: 12px;
  letter-spacing: .14em;
  padding: 5px 12px;
  backdrop-filter: blur(4px);
}
.prod-card .body { padding: 26px 26px 28px; }
.prod-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 8px; }
.prod-card p { font-size: 14px; color: var(--gray-600); line-height: 1.7; min-height: 48px; }
.prod-card .link {
  margin-top: 18px;
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 14px; font-weight: 600; color: var(--red);
}
.prod-card .link i {
  width: 26px; height: 1.5px; background: var(--red);
  transition: width .35s var(--ease);
  font-style: normal;
}
.prod-card:hover .link i { width: 44px; }

/* ============================================================
   首页 · 加工能力(深色)
   ============================================================ */
.cap-bg { position: relative; overflow: hidden; }
.cap-bg::before {
  content: "CONVERTING";
  position: absolute;
  left: 50%; top: 40px;
  transform: translateX(-50%);
  font-size: clamp(60px, 10vw, 150px);
  font-weight: 900;
  letter-spacing: .06em;
  color: rgba(255,255,255,.028);
  white-space: nowrap;
  pointer-events: none;
}
.cap-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  background: rgba(255,255,255,.09);
  border: 1px solid rgba(255,255,255,.09);
  position: relative;
}
.cap-item {
  background: var(--dark);
  padding: 38px 28px 34px;
  transition: background .4s;
  position: relative;
  overflow: hidden;
}
.cap-item::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 2px;
  background: var(--red);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .45s var(--ease);
}
.cap-item:hover { background: #151b23; }
.cap-item:hover::after { transform: scaleX(1); }
.cap-item .no { font-size: 13px; color: var(--red); font-weight: 600; letter-spacing: .14em; margin-bottom: 20px; }
.cap-item .ico { margin-bottom: 18px; color: #fff; opacity: .9; }
.cap-item h3 { font-size: 18px; font-weight: 600; margin-bottom: 8px; }
.cap-item p { font-size: 13px; color: var(--gray-400); line-height: 1.7; }

/* ============================================================
   首页 · 加工流程
   ============================================================ */
.flow { position: relative; }
.flow-track {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 22px;
  counter-reset: step;
}
.flow-step {
  position: relative;
  padding: 34px 24px 30px;
  background: #fff;
  border: 1px solid var(--gray-200);
  transition: all .4s var(--ease);
}
.flow-step:hover { border-color: var(--red); transform: translateY(-6px); box-shadow: 0 18px 40px rgba(13,17,23,.1); }
.flow-step .step-no {
  font-size: 40px;
  font-weight: 900;
  color: var(--gray-200);
  line-height: 1;
  margin-bottom: 18px;
  transition: color .4s;
}
.flow-step:hover .step-no { color: var(--red); }
.flow-step h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.flow-step p { font-size: 13.5px; color: var(--gray-600); }
.flow-step .arrow {
  position: absolute;
  right: -17px; top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  color: var(--gray-400);
  background: #fff;
  border: 1px solid var(--gray-200);
  width: 30px; height: 30px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 12px;
}
.flow-step:last-child .arrow { display: none; }

/* ============================================================
   首页 · 解决方案
   ============================================================ */
.sol-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
}
.sol-card {
  position: relative;
  overflow: hidden;
  min-height: 300px;
  grid-column: span 4;
  color: #fff;
  display: flex;
  align-items: flex-end;
}
.sol-card.w6 { grid-column: span 6; min-height: 340px; }
.sol-card.w3 { grid-column: span 3; }
.sol-card img {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .9s var(--ease);
}
.sol-card:hover img { transform: scale(1.07); }
.sol-card::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(13,17,23,0) 30%, rgba(13,17,23,.88) 100%);
  transition: opacity .4s;
}
.sol-card .body { position: relative; z-index: 2; padding: 30px; width: 100%; }
.sol-card .tag { font-size: 12px; letter-spacing: .22em; color: rgba(255,255,255,.75); text-transform: uppercase; }
.sol-card h3 { font-size: 22px; font-weight: 700; margin: 6px 0 4px; }
.sol-card p { font-size: 13.5px; color: rgba(255,255,255,.75); max-height: 0; opacity: 0; overflow: hidden; transition: all .5s var(--ease); }
.sol-card:hover p { max-height: 60px; opacity: 1; margin-top: 8px; }
.sol-card .plus {
  position: absolute;
  top: 22px; right: 22px;
  width: 38px; height: 38px;
  border: 1px solid rgba(255,255,255,.4);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  z-index: 2;
  transition: all .35s;
  font-size: 18px; font-weight: 300;
}
.sol-card:hover .plus { background: var(--red); border-color: var(--red); transform: rotate(90deg); }

/* ============================================================
   首页 · 公司实力
   ============================================================ */
.strength { display: grid; grid-template-columns: 1.05fr 1fr; gap: 70px; align-items: center; }
.strength .pics { position: relative; }
.strength .pics .main { width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.strength .pics .sub {
  position: absolute;
  right: -34px; bottom: -44px;
  width: 46%;
  border: 8px solid #fff;
  box-shadow: 0 24px 60px rgba(13,17,23,.18);
}
.strength .pics .badge {
  position: absolute;
  left: -28px; top: -28px;
  background: var(--red);
  color: #fff;
  padding: 22px 26px;
  text-align: center;
  box-shadow: 0 18px 40px rgba(232,33,39,.35);
}
.strength .pics .badge b { display: block; font-size: 34px; font-weight: 900; line-height: 1; }
.strength .pics .badge span { font-size: 12.5px; letter-spacing: .1em; opacity: .85; }

.strength-txt h2 { font-size: clamp(28px, 3vw, 40px); font-weight: 800; line-height: 1.35; margin-bottom: 22px; }
.strength-txt > p { color: var(--gray-600); margin-bottom: 30px; }
.feat-list { display: grid; grid-template-columns: 1fr 1fr; gap: 22px 30px; margin-bottom: 38px; }
.feat { display: flex; gap: 14px; }
.feat .chk {
  flex: none;
  width: 26px; height: 26px;
  background: rgba(232,33,39,.1);
  color: var(--red);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 700;
  margin-top: 3px;
}
.feat h4 { font-size: 16px; font-weight: 700; }
.feat p { font-size: 13.5px; color: var(--gray-600); }

/* ============================================================
   首页 · 询价
   ============================================================ */
.inquiry { position: relative; background: var(--dark); color: #fff; overflow: hidden; }
.inquiry::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 60% 80% at 85% 20%, rgba(232,33,39,.16), transparent 60%);
}
.inquiry .container { position: relative; display: grid; grid-template-columns: 1fr 1.15fr; gap: 80px; align-items: center; }
.inq-txt h2 { font-size: clamp(28px, 3.2vw, 42px); font-weight: 800; line-height: 1.35; margin-bottom: 18px; }
.inq-txt h2 span { color: var(--red); }
.inq-txt p { color: var(--gray-400); margin-bottom: 34px; max-width: 460px; }
.inq-contact { display: flex; flex-direction: column; gap: 18px; }
.inq-contact .row { display: flex; align-items: center; gap: 16px; font-size: 15px; }
.inq-contact .row .ic {
  width: 46px; height: 46px; flex: none;
  border: 1px solid rgba(255,255,255,.16);
  display: flex; align-items: center; justify-content: center;
  color: var(--red);
}
.inq-contact .row b { font-weight: 600; display: block; }
.inq-contact .row span { color: var(--gray-400); font-size: 13.5px; }
.inq-contact .phone-num { font-size: 26px; font-weight: 800; letter-spacing: .02em; }

.inq-form {
  background: #fff;
  color: var(--ink);
  padding: 46px 44px;
  box-shadow: 0 40px 90px rgba(0,0,0,.4);
  position: relative;
}
.inq-form::before {
  content: "INQUIRY";
  position: absolute;
  top: 20px; right: 24px;
  font-size: 12px; letter-spacing: .3em; color: var(--gray-400);
}
.inq-form h3 { font-size: 24px; font-weight: 800; margin-bottom: 6px; }
.inq-form .tip { font-size: 13.5px; color: var(--gray-600); margin-bottom: 26px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-grid .full { grid-column: 1 / -1; }
.field label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 7px; color: var(--gray-900); }
.field label em { color: var(--red); font-style: normal; }
.field input, .field textarea, .field select {
  width: 100%;
  border: 1px solid var(--gray-200);
  background: var(--gray-100);
  padding: 13px 15px;
  font-size: 14.5px;
  font-family: inherit;
  color: var(--ink);
  outline: none;
  transition: all .3s;
}
.field input:focus, .field textarea:focus, .field select:focus {
  border-color: var(--red);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(232,33,39,.1);
}
.field textarea { resize: vertical; min-height: 96px; }
.form-submit { width: 100%; margin-top: 20px; justify-content: center; }
.form-note { margin-top: 14px; font-size: 12.5px; color: var(--gray-400); text-align: center; }

/* ============================================================
   页脚
   ============================================================ */
.footer { background: #0a0d12; color: var(--gray-400); }
.footer-main {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 50px;
  padding: 78px 0 56px;
}
.footer .f-logo { display: flex; align-items: center; gap: 12px; margin-bottom: 22px; }
.footer .f-logo .cn { color: #fff; font-size: 19px; font-weight: 700; }
.footer .f-logo .en { font-size: 10px; letter-spacing: .2em; color: var(--gray-600); text-transform: uppercase; }
.footer-about { font-size: 14px; line-height: 1.9; max-width: 320px; }
.footer h4 { color: #fff; font-size: 16px; font-weight: 600; margin-bottom: 22px; position: relative; padding-bottom: 12px; }
.footer h4::after { content: ""; position: absolute; left: 0; bottom: 0; width: 26px; height: 2px; background: var(--red); }
.f-links li { margin-bottom: 12px; }
.f-links a { font-size: 14px; transition: all .3s; }
.f-links a:hover { color: var(--red); padding-left: 6px; }
.f-contact li { display: flex; gap: 12px; margin-bottom: 16px; font-size: 14px; line-height: 1.7; }
.f-contact .k { color: #fff; flex: none; font-weight: 500; }
.footer-bar { border-top: 1px solid rgba(255,255,255,.08); padding: 22px 0; font-size: 13px; color: var(--gray-600); }
.footer-bar .container { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }
.footer-bar a:hover { color: #fff; }

/* ---------- 浮动组件 ---------- */
.back-top {
  position: fixed;
  right: 30px; bottom: 30px;
  width: 48px; height: 48px;
  background: var(--ink);
  color: #fff;
  border: none; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden;
  transform: translateY(14px);
  transition: all .4s var(--ease);
  z-index: 80;
}
.back-top.show { opacity: 1; visibility: visible; transform: none; }
.back-top:hover { background: var(--red); }

.side-consult {
  position: fixed;
  right: 0; top: 50%;
  transform: translateY(-50%);
  z-index: 79;
  display: flex; flex-direction: column;
}
.side-consult a {
  writing-mode: vertical-rl;
  background: var(--red);
  color: #fff;
  padding: 18px 12px;
  font-size: 13.5px;
  letter-spacing: .24em;
  transition: background .3s;
}
.side-consult a:hover { background: var(--red-dark); }

/* ============================================================
   内页通用 Banner
   ============================================================ */
.page-banner {
  position: relative;
  min-height: 420px;
  display: flex;
  align-items: flex-end;
  color: #fff;
  background: var(--dark);
  overflow: hidden;
}
.page-banner .pb-bg { position: absolute; inset: 0; }
.page-banner .pb-bg img { width: 100%; height: 100%; object-fit: cover; opacity: .5; }
.page-banner .pb-bg::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(9,12,17,.9), rgba(9,12,17,.35)),
              linear-gradient(0deg, rgba(9,12,17,.9), transparent 60%);
}
.page-banner .container { position: relative; z-index: 2; padding-bottom: 64px; padding-top: 80px; }
.breadcrumb { font-size: 13.5px; color: rgba(255,255,255,.65); margin-bottom: 18px; letter-spacing: .05em; }
.breadcrumb a:hover { color: #fff; }
.breadcrumb span { margin: 0 10px; opacity: .5; }
.breadcrumb .cur { color: var(--red); }
.page-banner h1, .page-banner .banner-title { font-size: clamp(34px, 4.4vw, 56px); font-weight: 900; letter-spacing: .03em; line-height: 1.2; }
.page-banner .en { font-size: 13px; letter-spacing: .4em; text-transform: uppercase; color: rgba(255,255,255,.6); margin-top: 12px; }
.page-banner .desc { margin-top: 16px; max-width: 620px; color: rgba(255,255,255,.78); font-size: 16px; font-weight: 300; }

/* ============================================================
   产品中心页
   ============================================================ */
.filter-bar {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 46px;
}
.filter-btn {
  border: 1px solid var(--gray-200);
  background: #fff;
  padding: 10px 24px;
  font-size: 14.5px;
  font-family: inherit;
  cursor: pointer;
  transition: all .3s;
  color: var(--gray-600);
}
.filter-btn:hover { border-color: var(--red); color: var(--red); }
.filter-btn.active { background: var(--red); border-color: var(--red); color: #fff; }

.plist-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.plist-card {
  border: 1px solid var(--gray-200);
  background: #fff;
  overflow: hidden;
  transition: all .4s var(--ease);
}
.plist-card:hover { transform: translateY(-6px); box-shadow: 0 20px 46px rgba(13,17,23,.12); }
.plist-card .pic { aspect-ratio: 4/2.9; overflow: hidden; background: var(--gray-100); position: relative; }
.plist-card .pic img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s var(--ease); }
.plist-card:hover .pic img { transform: scale(1.07); }
.plist-card .pic .cat {
  position: absolute; top: 14px; left: 14px;
  background: var(--red); color: #fff;
  font-size: 12px; padding: 4px 12px; letter-spacing: .08em;
}
.plist-card .body { padding: 24px 26px 26px; }
.plist-card h3 { font-size: 18px; font-weight: 700; }
.plist-card .model { font-size: 12.5px; color: var(--gray-400); letter-spacing: .06em; margin: 4px 0 10px; }
.plist-card p { font-size: 13.5px; color: var(--gray-600); line-height: 1.7; min-height: 44px; }
.plist-card .ft { margin-top: 16px; display: flex; justify-content: space-between; align-items: center; border-top: 1px solid var(--gray-200); padding-top: 16px; }
.plist-card .ft .go { font-size: 14px; font-weight: 600; color: var(--red); display: inline-flex; align-items: center; gap: 8px; }
.plist-card .ft .go i { font-style: normal; transition: transform .3s; }
.plist-card:hover .ft .go i { transform: translateX(5px); }

.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  margin-top: 52px;
  flex-wrap: wrap;
}
.page-btn {
  min-width: 44px;
  height: 44px;
  padding: 0 16px;
  border: 1px solid var(--gray-200);
  background: #fff;
  font-family: inherit;
  font-size: 14.5px;
  color: var(--gray-600);
  cursor: pointer;
  transition: all .3s;
}
.page-btn:hover:not(:disabled):not(.active) { border-color: var(--red); color: var(--red); }
.page-btn.active { background: var(--red); border-color: var(--red); color: #fff; cursor: default; }
.page-btn:disabled { opacity: .4; cursor: not-allowed; }

/* ============================================================
   产品落地页(详情)
   ============================================================ */
.detail-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
.detail-gallery .main-img {
  border: 1px solid var(--gray-200);
  aspect-ratio: 1/0.86;
  overflow: hidden;
  background: var(--gray-100);
}
.detail-gallery .main-img img { width: 100%; height: 100%; object-fit: cover; }
.detail-info .cat-tag {
  display: inline-block;
  background: rgba(232,33,39,.09);
  color: var(--red);
  font-size: 13px; font-weight: 600;
  padding: 6px 16px;
  margin-bottom: 16px;
  letter-spacing: .06em;
}
.detail-info h1 { font-size: clamp(28px, 3vw, 38px); font-weight: 800; line-height: 1.3; margin-bottom: 14px; }
.detail-info .lead { color: var(--gray-600); font-size: 15.5px; margin-bottom: 28px; padding-bottom: 28px; border-bottom: 1px solid var(--gray-200); }
.kv-list { margin-bottom: 30px; }
.kv-list li {
  display: flex;
  padding: 13px 0;
  border-bottom: 1px dashed var(--gray-200);
  font-size: 14.5px;
}
.kv-list .k { width: 120px; flex: none; color: var(--gray-400); }
.kv-list .v { font-weight: 500; }
.detail-cta { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 8px; }

.spec-table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
.spec-table th, .spec-table td {
  border: 1px solid var(--gray-200);
  padding: 13px 18px;
  text-align: left;
}
.spec-table th { background: var(--gray-100); font-weight: 600; width: 220px; color: var(--gray-900); }

.intro-h {
  font-size: 19px;
  font-weight: 700;
  margin: 42px 0 20px;
  padding-left: 14px;
  border-left: 4px solid var(--red);
}
.intro-h:first-child { margin-top: 0; }

.check-list li { position: relative; padding-left: 30px; margin-bottom: 14px; color: var(--gray-900); font-size: 15px; }
.check-list li::before {
  content: "✓";
  position: absolute; left: 0; top: 1px;
  color: var(--red); font-weight: 800;
}

/* ---------- 后台正文排版（产品/资料详情页 [!--newstext--] 区域，自动美化编辑器粘贴内容） ---------- */
.richtext { max-width: 920px; font-size: 15.5px; color: var(--gray-600); line-height: 1.9; }
.richtext p { margin-bottom: 13px; }
.richtext h2, .richtext h3, .richtext h4 {
  font-size: 19px; font-weight: 700; color: var(--ink);
  margin: 38px 0 16px; padding-left: 14px;
  border-left: 4px solid var(--red); line-height: 1.4;
}
.richtext h2:first-child, .richtext h3:first-child, .richtext h4:first-child { margin-top: 0; }
.richtext p > strong:only-child, .richtext p > b:only-child {
  display: block; font-size: 17px; color: var(--ink);
  margin: 26px 0 4px; padding-left: 12px; border-left: 3px solid var(--red);
}
.richtext strong, .richtext b { color: var(--ink); font-weight: 600; }
.richtext ul, .richtext ol { margin: 4px 0 20px; }
.richtext li { position: relative; padding-left: 24px; margin-bottom: 9px; }
.richtext ul li::before {
  content: ""; position: absolute; left: 5px; top: .78em;
  width: 6px; height: 6px; background: var(--red); border-radius: 50%;
}
.richtext ol { counter-reset: rt; }
.richtext ol li { counter-increment: rt; padding-left: 32px; }
.richtext ol li::before {
  content: counter(rt); position: absolute; left: 0; top: .32em;
  width: 20px; height: 20px; border-radius: 50%;
  background: var(--gray-100); color: var(--red);
  font-size: 12px; font-weight: 700; line-height: 20px; text-align: center;
}
.richtext table { width: 100%; border-collapse: collapse; font-size: 14.5px; margin: 8px 0 26px; }
.richtext table th, .richtext table td { border: 1px solid var(--gray-200); padding: 12px 16px; text-align: left; }
.richtext table th { background: var(--gray-100); font-weight: 600; color: var(--gray-900); }
.richtext img { border-radius: 8px; margin: 12px 0 22px; }
.richtext hr { border: none; border-top: 1px solid var(--gray-200); margin: 30px 0; }

/* ============================================================
   加工栏目页
   ============================================================ */
.cap-detail { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.capd-card { display: grid; grid-template-columns: 220px 1fr; background: #fff; border: 1px solid var(--gray-200); overflow: hidden; transition: all .4s var(--ease); }
.capd-card:hover { box-shadow: 0 20px 46px rgba(13,17,23,.1); transform: translateY(-5px); }
.capd-card .pic { overflow: hidden; min-height: 210px; }
.capd-card .pic img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s var(--ease); }
.capd-card:hover .pic img { transform: scale(1.08); }
.capd-card .body { padding: 28px 30px; }
.capd-card .no { color: var(--red); font-size: 13px; font-weight: 700; letter-spacing: .16em; }
.capd-card h3 { font-size: 20px; font-weight: 700; margin: 8px 0 10px; }
.capd-card p { font-size: 14px; color: var(--gray-600); }

.equip-table { width: 100%; border-collapse: collapse; font-size: 15px; }
.equip-table th { background: var(--ink); color: #fff; padding: 15px 20px; text-align: left; font-weight: 600; }
.equip-table td { border-bottom: 1px solid var(--gray-200); padding: 15px 20px; background: #fff; }
.equip-table tr:hover td { background: var(--gray-100); }

/* ============================================================
   资质页
   ============================================================ */
.cert-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 300px)); justify-content: center; gap: 26px; }
.cert-card { background: #fff; border: 1px solid var(--gray-200); overflow: hidden; transition: all .4s var(--ease); }
.cert-card:hover { transform: translateY(-6px); box-shadow: 0 20px 44px rgba(13,17,23,.12); }
.cert-card .pic { aspect-ratio: 3/3.9; overflow: hidden; background: var(--gray-100); }
.cert-card .pic img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s var(--ease); }
.cert-card:hover .pic img { transform: scale(1.06); }
.cert-card.wide .pic { background: #fff; }
.cert-card.wide .pic img { object-fit: contain; padding: 12px; }
.cert-card .body { padding: 20px 22px; text-align: center; }
.cert-card h3 { font-size: 16px; font-weight: 700; }
.cert-card p { font-size: 12.5px; color: var(--gray-400); margin-top: 4px; }

.timeline { position: relative; padding-left: 34px; }
.timeline::before { content: ""; position: absolute; left: 8px; top: 6px; bottom: 6px; width: 2px; background: var(--gray-200); }
.tl-item { position: relative; padding-bottom: 38px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: "";
  position: absolute; left: -32px; top: 7px;
  width: 12px; height: 12px;
  background: #fff;
  border: 3px solid var(--red);
  border-radius: 50%;
}
.tl-item .year { color: var(--red); font-weight: 800; font-size: 19px; letter-spacing: .04em; }
.tl-item h3 { font-size: 17px; font-weight: 700; margin: 4px 0 6px; }
.tl-item p { font-size: 14px; color: var(--gray-600); }

/* ============================================================
   技术资料页
   ============================================================ */
.doc-list { display: grid; gap: 16px; }
.doc-item {
  display: flex; align-items: center; gap: 22px;
  background: #fff;
  border: 1px solid var(--gray-200);
  padding: 24px 28px;
  transition: all .35s var(--ease);
}
.doc-item:hover { border-color: var(--red); box-shadow: 0 14px 34px rgba(13,17,23,.08); }
.doc-item .doc-ico {
  flex: none;
  width: 54px; height: 54px;
  background: rgba(232,33,39,.09);
  color: var(--red);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 800; letter-spacing: .04em;
}
.doc-item .doc-body { flex: 1; }
.doc-item h3 { font-size: 17px; font-weight: 700; }
.doc-item p { font-size: 13px; color: var(--gray-400); margin-top: 3px; }
.doc-item .dl { flex: none; font-size: 14px; font-weight: 600; color: var(--red); display: inline-flex; align-items: center; gap: 8px; }

.faq-item { border: 1px solid var(--gray-200); background: #fff; margin-bottom: 14px; }
.faq-q {
  width: 100%;
  border: none; background: none;
  font-family: inherit;
  display: flex; justify-content: space-between; align-items: center; gap: 20px;
  padding: 22px 28px;
  font-size: 16.5px; font-weight: 600;
  cursor: pointer;
  text-align: left;
  color: var(--ink);
  transition: color .3s;
}
.faq-q:hover { color: var(--red); }
.faq-q .pm { flex: none; width: 30px; height: 30px; border: 1px solid var(--gray-200); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 16px; color: var(--red); transition: all .3s; }
.faq-item.open .faq-q .pm { background: var(--red); border-color: var(--red); color: #fff; transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .45s var(--ease); }
.faq-a .inner { padding: 0 28px 24px; color: var(--gray-600); font-size: 14.5px; line-height: 1.9; }

/* ============================================================
   联系页
   ============================================================ */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 60px; align-items: start; }
.contact-cards { display: grid; gap: 18px; }
.contact-card { display: flex; gap: 20px; background: #fff; border: 1px solid var(--gray-200); padding: 26px 28px; transition: all .35s; }
.contact-card:hover { border-color: var(--red); transform: translateX(6px); }
.contact-card .ic { flex: none; width: 52px; height: 52px; background: var(--ink); color: #fff; display: flex; align-items: center; justify-content: center; }
.contact-card:hover .ic { background: var(--red); }
.contact-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 4px; }
.contact-card p { font-size: 14.5px; color: var(--gray-600); }
.contact-card p.big { font-size: 21px; font-weight: 800; color: var(--ink); letter-spacing: .02em; }
.map-box { border: 1px solid var(--gray-200); overflow: hidden; }
.map-box img { width: 100%; height: 380px; object-fit: cover; }

/* ============================================================
   CTA 通用条
   ============================================================ */
.cta-band { position: relative; background: var(--red); color: #fff; overflow: hidden; }
.cta-band::before {
  content: "CENHAI";
  position: absolute;
  right: -20px; bottom: -52px;
  font-size: 170px; font-weight: 900;
  color: rgba(255,255,255,.08);
  letter-spacing: .02em;
  pointer-events: none;
}
.cta-band .container {
  position: relative;
  display: flex; justify-content: space-between; align-items: center;
  gap: 30px; flex-wrap: wrap;
  padding-top: 64px; padding-bottom: 64px;
}
.cta-band h2 { font-size: clamp(24px, 2.8vw, 36px); font-weight: 800; }
.cta-band p { opacity: .85; margin-top: 8px; }
.btn-white { background: #fff; color: var(--red); }
.btn-white:hover { background: var(--ink); color: #fff; }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1080px) {
  .stats .container { grid-template-columns: repeat(3, 1fr); }
  .stat:nth-child(4) { border-left: none; }
  .prod-grid { grid-template-columns: repeat(2, 1fr); }
  .cap-grid { grid-template-columns: repeat(3, 1fr); }
  .flow-track { grid-template-columns: repeat(3, 1fr); }
  .flow-step .arrow { display: none; }
  .sol-card, .sol-card.w6, .sol-card.w3 { grid-column: span 6; }
  .strength { grid-template-columns: 1fr; gap: 90px; }
  .inquiry .container { grid-template-columns: 1fr; gap: 50px; }
  .footer-main { grid-template-columns: 1fr 1fr; }
  .plist-grid { grid-template-columns: repeat(2, 1fr); }
  .detail-wrap { grid-template-columns: 1fr; }
  .cap-detail { grid-template-columns: 1fr; }
  .cert-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .hero-side { display: none; }
}

@media (max-width: 768px) {
  .container { padding: 0 22px; }
  .section { padding: 72px 0; }
  .nav, .nav-cta { display: none; }
  .menu-toggle { display: flex; }
  .site-header.nav-open .nav {
    display: flex;
    position: absolute;
    top: 78px; left: 0; right: 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    padding: 12px 22px 22px;
    box-shadow: 0 20px 40px rgba(13,17,23,.12);
  }
  .site-header.nav-open .nav a { padding: 13px 0; border-bottom: 1px solid var(--gray-200); }
  .stats .container { grid-template-columns: repeat(2, 1fr); }
  .stat { border-left: none; padding: 30px 20px; }
  .prod-grid, .plist-grid, .cert-grid { grid-template-columns: 1fr; }
  .cap-grid { grid-template-columns: 1fr 1fr; }
  .flow-track { grid-template-columns: 1fr; }
  .sol-card, .sol-card.w6, .sol-card.w3 { grid-column: span 12; min-height: 260px; }
  .form-grid { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr; gap: 36px; }
  .hero-foot .hf-items { gap: 20px; font-size: 12px; }
  .hero-foot .hf-hide { display: none; }
  .capd-card { grid-template-columns: 1fr; }
  .strength .pics .sub { right: 0; }
  .strength .pics .badge { left: -8px; top: -20px; padding: 16px 20px; }
  .topbar .tb-right .tb-item { display: none; }
}

/* 产品子栏目切换导航 */
.subnav-wrap { background: #fff; border-bottom: 1px solid #eee; }
.subnav { display: flex; flex-wrap: wrap; gap: 10px; padding: 18px 0; }
.subnav .tab { padding: 8px 22px; border: 1px solid #ddd; border-radius: 20px; font-size: 14px; color: #333; transition: all .3s; }
.subnav .tab:hover, .subnav .tab.on { background: var(--red); border-color: var(--red); color: #fff; }

/* ===== TAGS 标签页 ===== */
.tag-group { margin-bottom: 56px; }
.tag-group:last-child { margin-bottom: 0; }
.tag-group-head { display: flex; align-items: baseline; gap: 14px; margin-bottom: 22px; padding-bottom: 14px; border-bottom: 2px solid #0a0d12; }
.tag-group-head h2 { font-size: 24px; font-weight: 700; }
.tag-group-head .en { font-size: 12px; letter-spacing: .25em; text-transform: uppercase; color: #999; }
.tag-chips { display: flex; flex-wrap: wrap; gap: 12px; }
.tag-chip { display: inline-flex; align-items: center; gap: 8px; padding: 10px 20px; background: #fff; border: 1px solid #e5e7eb; border-radius: 24px; font-size: 14px; color: #333; transition: all .3s; }
.tag-chip em { font-style: normal; font-size: 12px; color: #999; }
.tag-chip:hover { background: var(--red); border-color: var(--red); color: #fff; transform: translateY(-2px); }
.tag-chip:hover em { color: rgba(255,255,255,.85); }
.tag-chip.lg { padding: 14px 28px; font-size: 16px; font-weight: 600; }
.tag-chip.more { border-color: var(--red); color: var(--red); font-weight: 600; }
.tag-chip.more:hover { background: var(--red); color: #fff; }

/* tag详情页 */
.tag-badge { display: inline-block; padding: 5px 14px; margin-right: 14px; background: var(--red); border-radius: 4px; font-size: 14px; font-weight: 500; vertical-align: middle; }
.tag-intro { padding: 26px 30px; background: #fff; border-left: 4px solid var(--red); border-radius: 0 8px 8px 0; box-shadow: 0 4px 20px rgba(0,0,0,.05); }
.tag-intro p { color: var(--gray-600); line-height: 2; margin: 0; }

@media (max-width: 768px) {
  .tag-group-head h2 { font-size: 20px; }
  .tag-chip.lg { padding: 10px 20px; font-size: 15px; }
  .tag-intro { padding: 20px; }
}

/* 详情页关键字标签 */
.post-tags { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin: 22px 0; }
.post-tags:not(:has(a)) { display: none; }
.pt-label { font-size: 14px; color: #999; }
.post-tags a { display: inline-flex; align-items: center; padding: 7px 16px; background: #fff; border: 1px solid #e5e7eb; border-radius: 24px; font-size: 13px; color: #333; transition: all .3s; }
.post-tags a:hover { background: var(--red); border-color: var(--red); color: #fff; transform: translateY(-2px); }

/* 资料详情下载卡 */
.dl-card { display: flex; align-items: center; gap: 26px; padding: 34px 38px; background: #fff; border: 1px solid #eee; border-left: 5px solid var(--red); border-radius: 12px; box-shadow: 0 6px 24px rgba(0,0,0,.05); }
.dl-card .doc-ico { flex-shrink: 0; }
.dl-card-info { flex: 1; min-width: 0; }
.dl-card-info h2 { font-size: 22px; margin-bottom: 8px; }
.dl-card-info p { color: var(--gray-600); font-size: 15px; line-height: 1.8; margin: 0 0 10px; }
.dl-meta { font-size: 13px; color: #999; }
@media (max-width: 768px) { .dl-card { flex-direction: column; align-items: flex-start; gap: 18px; padding: 24px; } }

/* 产品分类卡（产品中心封面） */
.cat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.cat-card { display: flex; flex-direction: column; padding: 30px 28px; background: #fff; border: 1px solid #eee; border-radius: 12px; transition: all .3s; }
.cat-card:hover { border-color: var(--red); box-shadow: 0 10px 30px rgba(200,22,28,.1); transform: translateY(-4px); }
.cc-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.cc-top h3 { font-size: 20px; }
.cc-num { padding: 3px 10px; background: #f5f5f5; border-radius: 12px; font-size: 12px; color: #888; }
.cat-card > p { flex: 1; color: var(--gray-600); font-size: 14px; line-height: 1.8; margin: 0 0 16px; }
.cc-go { font-size: 14px; font-weight: 600; color: var(--red); }
@media (max-width: 992px) { .cat-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .cat-grid { grid-template-columns: 1fr; } }