@charset "utf-8";
/* ==========================================================================
   泰洋建设 · 官网样式
   主色 #1c4e9a   辅色 #ef841a
   ========================================================================== */

/* ---------- 1. 变量与基础 ---------- */
:root {
  --c-main: #1c4e9a;
  --c-main-l: #2463c2;
  --c-main-d: #153970;
  --c-main-dd: #0d2345;
  --c-accent: #ef841a;
  --c-accent-d: #d16f0c;
  --c-ink: #16263a;
  --c-ink-2: #3b4d61;
  --c-mut: #71828f;
  --c-line: #e4ecf4;
  --c-bg: #f3f7fb;
  --c-bg-2: #eaf1f8;
  --c-white: #fff;
  --shadow-s: 0 2px 10px rgba(21, 57, 112, .06);
  --shadow-m: 0 10px 30px rgba(21, 57, 112, .10);
  --shadow-l: 0 22px 60px rgba(21, 57, 112, .16);
  --r-s: 4px;
  --r-m: 8px;
  --r-l: 16px;
  --container: 1440px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

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

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

body {
  margin: 0;
  font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Source Han Sans SC", "Hiragino Sans GB", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-ink-2);
  background: var(--c-white);
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, p, ul, ol, figure { margin: 0; padding: 0; }
ul, ol { list-style: none; }
img { max-width: 100%; height: auto; border: 0; display: block; }

/* 无障碍隐藏：仅屏幕阅读器与搜索引擎可读，不占布局 */
.sr-only {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}
a { color: inherit; text-decoration: none; transition: color .3s var(--ease); }
a:hover { color: var(--c-main); }
button { font-family: inherit; cursor: pointer; border: 0; background: none; }
input { font-family: inherit; }
::selection { background: var(--c-main); color: #fff; }

.main { display: block; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}

/* ---------- 2. 区块标题 ---------- */
.sec { padding: 96px 0; position: relative; }
section[id] { scroll-margin-top: 158px; }

.sec-hd { text-align: center; margin-bottom: 56px; }
.sec-hd--left { text-align: left; margin-bottom: 46px; }

.sec-hd__eyebrow {
  display: inline-block;
  font-size: 12px;
  letter-spacing: .34em;
  text-transform: uppercase;
  color: var(--c-accent);
  font-weight: 700;
  margin-bottom: 14px;
  position: relative;
  padding-left: 34px;
}
/* 左对齐版块（关于我们）：仅左侧一条辅助色横线 */
.sec-hd--left .sec-hd__eyebrow::before {
  content: "";
  position: absolute;
  left: 0; top: 50%;
  width: 24px; height: 2px;
  background: linear-gradient(90deg, var(--c-accent), transparent);
  transform: translateY(-50%);
}
/* 居中版块：英文标题置于中文标题下方，左右各一条辅助色横线 */
.sec-hd:not(.sec-hd--left) .sec-hd__eyebrow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 0;
  margin: 15px 0 0;
  letter-spacing: .3em;
}
.sec-hd:not(.sec-hd--left) .sec-hd__eyebrow::before,
.sec-hd:not(.sec-hd--left) .sec-hd__eyebrow::after {
  content: "";
  flex: none;
  width: 44px;
  height: 2px;
  background: var(--c-accent);
}

.sec-hd__title {
  font-size: 38px;
  line-height: 1.25;
  font-weight: 800;
  color: var(--c-ink);
  letter-spacing: .01em;
}
.sec-hd__title em {
  font-style: normal;
  color: var(--c-main);
  position: relative;
}
.sec-hd__title em::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 2px;
  height: 8px;
  background: rgba(28, 78, 154, .12);
  border-radius: 4px;
  z-index: -1;
}
.sec-hd__sub {
  margin-top: 14px;
  color: var(--c-mut);
  font-size: 15px;
  letter-spacing: .04em;
}
.sec-hd--light .sec-hd__title { color: #fff; }
.sec-hd--light .sec-hd__title em { color: #ffb765; }
.sec-hd--light .sec-hd__title em::after { background: rgba(239, 132, 26, .22); }
.sec-hd--light .sec-hd__sub { color: rgba(255, 255, 255, .72); }

/* ---------- 3. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  height: 48px;
  padding: 0 28px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .02em;
  position: relative;
  top: 0;
  overflow: hidden;
  transition: all .35s var(--ease);
}
.btn i { transition: transform .35s var(--ease); font-size: 13px; }
.btn:hover i { transform: translateX(4px); }
.btn--main {
  color: #fff;
  background: linear-gradient(120deg, var(--c-main) 0%, var(--c-main-l) 100%);
  box-shadow: 0 10px 24px rgba(28, 78, 154, .28);
}
.btn--main::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, var(--c-accent), var(--c-accent-d));
  opacity: 0;
  transition: opacity .35s var(--ease);
}
.btn--main span, .btn--main i, .btn--main { position: relative; z-index: 1; }
.btn--main:hover { color: #fff; top: -3px; box-shadow: 0 16px 34px rgba(239, 132, 26, .32); }
.btn--main:hover::after { opacity: 1; }
.btn--ghost {
  color: var(--c-main);
  border: 1px solid rgba(28, 78, 154, .28);
  background: rgba(28, 78, 154, .04);
}
.btn--ghost:hover { color: #fff; background: var(--c-main); border-color: var(--c-main); top: -3px; }
.btn--lg { height: 52px; padding: 0 36px; }

/* ---------- 4. 顶部信息条 ---------- */
.topbar {
  background: linear-gradient(90deg, var(--c-main-dd), var(--c-main-d) 55%, var(--c-main) 100%);
  color: rgba(255, 255, 255, .84);
  font-size: 13px;
  line-height: 42px;
  height: 42px;
  overflow: hidden;
}
.topbar__in { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.topbar__left, .topbar__right { display: flex; align-items: center; gap: 22px; }
.topbar__item { display: inline-flex; align-items: center; gap: 7px; white-space: nowrap; }
.topbar__item i { color: rgba(255, 255, 255, .6); font-size: 12px; }
.topbar__item:hover { color: #fff; }
.topbar__msg {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 26px;
  padding: 0 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .14);
  color: #fff;
  transition: all .3s var(--ease);
}
.topbar__msg:hover { background: var(--c-accent); color: #fff; }

/* ---------- 5. 头部 ---------- */
.hdstick {
  position: sticky;
  top: 0;
  z-index: 900;
  transition: box-shadow .35s var(--ease);
}
.hdstick.is-mini { box-shadow: 0 6px 26px rgba(7, 50, 79, .14); }

.hdr { background: #fff; transition: height .3s var(--ease); }
.hdr__in {
  display: flex;
  align-items: center;
  gap: 28px;
  height: 100px;
  transition: height .3s var(--ease);
}
.hdstick.is-mini .hdr__in { height: 84px; }

.hdr__logo { flex: 0 0 auto; display: block; }
.hdr__logo img { width: 200px; height: 72px; object-fit: contain; }

.hdr__hot {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 12px;
  padding-right: 26px;
  border-right: 1px solid var(--c-line);
}
.hdr__hot-ico {
  width: 44px; height: 44px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 19px;
  background: linear-gradient(135deg, var(--c-accent), #f7a245);
  box-shadow: 0 8px 18px rgba(239, 132, 26, .28);
  animation: pulseRing 2.6s infinite;
}
@keyframes pulseRing {
  0%   { box-shadow: 0 0 0 0 rgba(239, 132, 26, .38), 0 8px 18px rgba(239, 132, 26, .28); }
  70%  { box-shadow: 0 0 0 12px rgba(239, 132, 26, 0), 0 8px 18px rgba(239, 132, 26, .28); }
  100% { box-shadow: 0 0 0 0 rgba(239, 132, 26, 0), 0 8px 18px rgba(239, 132, 26, .28); }
}
.hdr__hot-txt { display: flex; flex-direction: column; line-height: 1.2; }
.hdr__hot-txt em { font-style: normal; font-size: 12px; color: var(--c-mut); letter-spacing: .12em; }
.hdr__hot-txt b {
  font-size: 21px;
  color: var(--c-main);
  font-weight: 800;
  letter-spacing: .02em;
  font-family: "DIN Alternate", "Bahnschrift", "Arial Narrow", Arial, sans-serif;
}

.hdr__search {
  display: flex;
  align-items: center;
  width: 230px;
  height: 42px;
  border-radius: 999px;
  background: var(--c-bg);
  border: 1px solid var(--c-line);
  overflow: hidden;
  transition: all .35s var(--ease);
}
.hdr__search:focus-within { width: 270px; border-color: var(--c-main); background: #fff; box-shadow: 0 6px 18px rgba(28, 78, 154, .12); }
.hdr__search input {
  flex: 1;
  min-width: 0;
  height: 100%;
  border: 0;
  outline: none;
  background: transparent;
  padding: 0 6px 0 18px;
  font-size: 14px;
  color: var(--c-ink);
}
.hdr__search input::placeholder { color: #9fadb9; }
.hdr__search button {
  width: 44px; height: 100%;
  color: #fff;
  background: linear-gradient(135deg, var(--c-main), var(--c-main-l));
  display: grid;
  place-items: center;
  transition: background .3s var(--ease);
}
.hdr__search button:hover { background: linear-gradient(135deg, var(--c-accent), var(--c-accent-d)); }

.hdr__burger { display: none; width: 42px; height: 42px; flex-direction: column; justify-content: center; gap: 5px; padding: 0 9px; border-radius: var(--r-m); background: var(--c-bg); }
.hdr__burger span { display: block; height: 2px; background: var(--c-main); border-radius: 2px; transition: all .3s var(--ease); }
.hdr__burger span:nth-child(2) { width: 72%; }

/* ---------- 6. 导航 ---------- */
.nav {
  background: linear-gradient(90deg, var(--c-main-d) 0%, var(--c-main) 48%, var(--c-main-l) 100%);
  position: relative;
  z-index: 30;
}
.nav::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .28), transparent);
}
.nav__in { display: flex; align-items: stretch; justify-content: space-between; gap: 20px; }
.nav__list { display: flex; align-items: stretch; flex-wrap: wrap; }
.nav__item { position: relative; }
.nav__a {
  display: flex;
  align-items: center;
  gap: 6px;
  height: 54px;
  padding: 0 21px;
  color: rgba(255, 255, 255, .92);
  font-size: 15.5px;
  font-weight: 600;
  letter-spacing: .03em;
  white-space: nowrap;
  position: relative;
  transition: all .3s var(--ease);
}
.nav__a::before {
  content: "";
  position: absolute;
  left: 50%; bottom: 0;
  width: 0; height: 3px;
  border-radius: 3px 3px 0 0;
  background: var(--c-accent);
  transform: translateX(-50%);
  transition: width .35s var(--ease);
}
.nav__item--home .nav__a { padding: 0 18px; }
.nav__item--home .nav__a i { font-size: 14px; margin-right: 2px; }
.nav__a:hover, .nav__item.is-cur > .nav__a { color: #fff; background: rgba(255, 255, 255, .1); }
.nav__a:hover::before, .nav__item.is-cur > .nav__a::before { width: 54%; }
.nav__caret { font-size: 11px; opacity: .8; transition: transform .3s var(--ease); }
.nav__item--has:hover .nav__caret { transform: rotate(180deg); }

.nav__drop {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 210px;
  padding: 10px 0;
  background: #fff;
  border-radius: 0 0 var(--r-m) var(--r-m);
  box-shadow: 0 18px 44px rgba(7, 50, 79, .18);
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
  transition: all .34s var(--ease);
  z-index: 40;
  border-top: 3px solid var(--c-accent);
}
.nav__item--has:hover .nav__drop { opacity: 1; visibility: visible; transform: translateY(0); }
.nav__sub li a {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 10px 22px;
  font-size: 14.5px;
  color: var(--c-ink-2);
  position: relative;
  transition: all .28s var(--ease);
}
.nav__sub li a i { font-size: 10px; color: var(--c-accent); opacity: 0; transform: translateX(-6px); transition: all .28s var(--ease); }
.nav__sub li a:hover { color: var(--c-main); background: var(--c-bg); padding-left: 28px; }
.nav__sub li a:hover i { opacity: 1; transform: translateX(0); }

.nav__tel {
  display: flex;
  align-items: center;
  gap: 9px;
  color: #fff;
  font-size: 14px;
  white-space: nowrap;
}
.nav__tel i { color: var(--c-accent); font-size: 16px; }
.nav__tel b { font-size: 17px; letter-spacing: .02em; font-family: "DIN Alternate", "Bahnschrift", Arial, sans-serif; }

/* ---------- 7. 移动端抽屉 ---------- */
.mask {
  position: fixed;
  inset: 0;
  background: rgba(7, 30, 50, .55);
  backdrop-filter: blur(2px);
  opacity: 0;
  visibility: hidden;
  transition: all .35s var(--ease);
  z-index: 990;
}
.mask.is-on { opacity: 1; visibility: visible; }

.mnav {
  position: fixed;
  top: 0; right: 0;
  width: min(86vw, 360px);
  height: 100%;
  background: #fff;
  z-index: 1000;
  transform: translateX(102%);
  transition: transform .42s var(--ease), box-shadow .42s var(--ease);
  display: flex;
  flex-direction: column;
}
/* 抽屉关闭时不能带阴影：它停在视口右侧外，box-shadow 会向左渗透到页面右边缘 */
.mnav.is-on { transform: translateX(0); box-shadow: -14px 0 44px rgba(7, 50, 79, .25); }
.mnav__hd {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 58px;
  padding: 0 18px;
  background: linear-gradient(120deg, var(--c-main-d), var(--c-main));
  color: #fff;
}
.mnav__title { font-weight: 700; letter-spacing: .08em; }
.mnav__close { color: #fff; font-size: 20px; width: 32px; height: 32px; }
.mnav__bd { flex: 1; overflow-y: auto; -webkit-overflow-scrolling: touch; }
.mnav__list { padding: 8px 0; }
.mnav__item { border-bottom: 1px solid var(--c-line); }
.mnav__item > a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  font-size: 16px;
  font-weight: 600;
  color: var(--c-ink);
}
.mnav__item > a > i { font-size: 12px; color: var(--c-mut); transition: transform .3s var(--ease); }
.mnav__item--home > a { justify-content: flex-start; gap: 11px; }
.mnav__item--home > a > i { font-size: 15px; color: var(--c-main); }
.mnav__item.is-open > a { color: var(--c-main); background: var(--c-bg); }
.mnav__item.is-open > a > i { transform: rotate(180deg); }
.mnav__sub {
  max-height: 0;
  overflow: hidden;
  background: var(--c-bg);
  transition: max-height .38s var(--ease);
}
.mnav__sub li a { display: block; padding: 11px 20px 11px 34px; font-size: 14.5px; color: var(--c-ink-2); border-top: 1px dashed #dbe6f0; }
.mnav__ft { padding: 18px; }
.mnav__call {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  border-radius: 999px;
  color: #fff;
  font-weight: 600;
  background: linear-gradient(120deg, var(--c-accent), var(--c-accent-d));
}

/* ---------- 8. 轮播 ---------- */
.hero {
  position: relative;
  height: 44.27vw;
  max-height: 850px;
  min-height: 420px;
  overflow: hidden;
  background: var(--c-main-dd);
}
.hero__track { position: absolute; inset: 0; }
.hero__slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 1s var(--ease), visibility 1s;
  z-index: 1;
}
.hero__slide.is-on { opacity: 1; visibility: visible; z-index: 2; }
.hero__link { display: block; position: absolute; inset: 0; }
.hero__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.08);
  transition: transform 8s linear;
}
.hero__slide.is-on .hero__img { transform: scale(1); }
.hero__scrim {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(7, 42, 70, .86) 0%, rgba(9, 48, 78, .62) 32%, rgba(10, 55, 88, .12) 62%, rgba(10, 55, 88, .3) 100%),
    linear-gradient(0deg, rgba(7, 42, 70, .5) 0%, transparent 42%);
}
.hero__c { position: absolute; inset: 0; display: flex; align-items: center; }
.hero__inner { max-width: 640px; color: #fff; }
.hero__title {
  font-size: 52px;
  line-height: 1.22;
  font-weight: 800;
  letter-spacing: .02em;
  text-shadow: 0 4px 26px rgba(0, 0, 0, .34);
  opacity: 0;
  transform: translateY(38px);
}
.hero__sub {
  margin-top: 20px;
  font-size: 19px;
  color: rgba(255, 255, 255, .88);
  letter-spacing: .04em;
  opacity: 0;
  transform: translateY(30px);
  padding-left: 20px;
  border-left: 3px solid var(--c-accent);
}
.hero__more {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-top: 34px;
  height: 50px;
  padding: 0 30px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  background: rgba(255, 255, 255, .14);
  border: 1px solid rgba(255, 255, 255, .42);
  backdrop-filter: blur(6px);
  opacity: 0;
  transform: translateY(24px);
  transition: all .4s var(--ease);
}
.hero__more i { font-size: 12px; transition: transform .35s var(--ease); }
.hero__link:hover .hero__more { background: var(--c-accent); border-color: var(--c-accent); box-shadow: 0 12px 30px rgba(239, 132, 26, .4); }
.hero__link:hover .hero__more i { transform: translateX(5px); }
.hero__slide.is-on .hero__title { animation: heroUp .95s .18s var(--ease) forwards; }
.hero__slide.is-on .hero__sub { animation: heroUp .95s .38s var(--ease) forwards; }
.hero__slide.is-on .hero__more { animation: heroUp .95s .56s var(--ease) forwards; }
@keyframes heroUp { to { opacity: 1; transform: translateY(0); } }

.hero__arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 54px; height: 54px;
  border-radius: 50%;
  color: #fff;
  font-size: 18px;
  background: rgba(255, 255, 255, .12);
  border: 1px solid rgba(255, 255, 255, .3);
  backdrop-filter: blur(4px);
  display: grid;
  place-items: center;
  z-index: 5;
  opacity: 0;
  transition: all .35s var(--ease);
}
.hero:hover .hero__arrow { opacity: 1; }
.hero__arrow:hover { background: var(--c-accent); border-color: var(--c-accent); }
.hero__arrow--prev { left: 34px; }
.hero__arrow--next { right: 34px; }

.hero__dots {
  position: absolute;
  left: 50%;
  bottom: 38px;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 5;
}
.hero__dot {
  width: 34px; height: 4px;
  border-radius: 4px;
  background: rgba(255, 255, 255, .34);
  position: relative;
  overflow: hidden;
  transition: width .35s var(--ease), background .35s var(--ease);
}
.hero__dot i {
  position: absolute;
  inset: 0;
  width: 0;
  background: var(--c-accent);
  display: block;
}
.hero__dot.is-on { width: 56px; background: rgba(255, 255, 255, .3); }
.hero__dot.is-on i { animation: dotBar 6s linear forwards; }
@keyframes dotBar { from { width: 0; } to { width: 100%; } }

.hero__scroll {
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 1px; height: 46px;
  background: rgba(255, 255, 255, .26);
  z-index: 4;
}
.hero__scroll span {
  position: absolute;
  left: -2px;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--c-accent);
  animation: scrollDot 2s infinite;
}
@keyframes scrollDot { 0% { top: 0; opacity: 0; } 30% { opacity: 1; } 100% { top: 42px; opacity: 0; } }

/* ---------- 9. 公司简介 ---------- */
.about {
  background:
    url(../images/about-bj.jpg) no-repeat center bottom / 100% auto,
    linear-gradient(180deg, #fff 0%, var(--c-bg) 100%);
  padding-bottom: 120px;
}
.about__body { display: grid; grid-template-columns: 1fr 1fr; gap: 66px; align-items: center; }
.about__media { position: relative; }
.about__frame {
  position: relative;
  border-radius: var(--r-l);
  overflow: hidden;
  box-shadow: var(--shadow-l);
  clip-path: inset(0 0 0 0);
}
.about__frame::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  background: linear-gradient(160deg, rgba(28, 78, 154, .18), transparent 55%);
}
.about__frame img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; transition: transform 1.1s var(--ease); }
.about__media:hover .about__frame img { transform: scale(1.06); }
.about__media::after {
  content: "";
  position: absolute;
  left: -22px; bottom: -22px;
  width: 168px; height: 168px;
  border-left: 3px solid var(--c-accent);
  border-bottom: 3px solid var(--c-accent);
  border-radius: 0 0 0 var(--r-l);
  z-index: -1;
}
.about__seal {
  position: absolute;
  right: -18px;
  bottom: 34px;
  background: linear-gradient(140deg, var(--c-main), var(--c-main-l));
  color: #fff;
  border-radius: var(--r-m);
  padding: 16px 22px;
  display: flex;
  align-items: center;
  gap: 14px;
  box-shadow: 0 18px 40px rgba(21, 57, 112, .3);
}
.about__seal b { font-size: 40px; line-height: 1; font-weight: 800; font-family: "DIN Alternate", "Bahnschrift", Arial, sans-serif; }
.about__seal b em { font-style: normal; font-size: 20px; color: var(--c-accent); }
.about__seal span { font-size: 13px; line-height: 1.5; color: rgba(255, 255, 255, .84); }

.about__text { position: relative; }
.about__name {
  font-size: 30px;
  font-weight: 800;
  color: var(--c-ink);
  margin-bottom: 20px;
  padding-bottom: 18px;
  position: relative;
}
.about__name::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 56px; height: 3px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--c-accent), rgba(239, 132, 26, .1));
}
.about__desc { color: var(--c-ink-2); font-size: 15.5px; line-height: 2.05; text-align: justify; }
.about__tags { display: flex; flex-wrap: wrap; gap: 10px 22px; margin-top: 24px; }
.about__tags span { display: inline-flex; align-items: center; gap: 8px; font-size: 14.5px; color: var(--c-main); font-weight: 600; }
.about__tags i { color: var(--c-accent); }
.about__btns { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 34px; }

.qnav {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  margin-top: 78px;
}
.qnav__item {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 26px 24px;
  background: #fff;
  border-radius: var(--r-m);
  border: 1px solid var(--c-line);
  box-shadow: var(--shadow-s);
  position: relative;
  overflow: hidden;
  top: 0;
  transition: box-shadow .4s var(--ease), border-color .4s var(--ease), top .4s var(--ease);
}
.qnav__item::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--c-main);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform .4s var(--ease);
}
.qnav__item:hover { top: -8px; box-shadow: var(--shadow-m); border-color: rgba(28, 78, 154, .2); }
.qnav__item:hover::before { transform: scaleY(1); }
.qnav__ico {
  flex: 0 0 auto;
  width: 54px; height: 54px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  font-size: 22px;
  color: var(--c-main);
  background: rgba(28, 78, 154, .07);
  transition: all .4s var(--ease);
}
.qnav__item:hover .qnav__ico { color: #fff; background: linear-gradient(135deg, var(--c-accent), var(--c-accent-d)); transform: rotate(-6deg) scale(1.05); }
.qnav__txt { display: flex; flex-direction: column; }
.qnav__txt b { font-size: 17px; color: var(--c-ink); font-weight: 700; }
.qnav__txt em { font-style: normal; font-size: 11.5px; letter-spacing: .12em; text-transform: uppercase; color: var(--c-mut); }

/* ---------- 10. 工程业绩 ---------- */
.ach { background: #fff; }
.ach__tabs {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px;
  margin-bottom: 44px;
  border-bottom: 1px solid var(--c-line);
  padding-bottom: 0;
}
.ach__tab {
  position: relative;
  padding: 12px 26px;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--c-mut);
  transition: color .3s var(--ease);
  z-index: 2;
}
.ach__tab:hover { color: var(--c-main); }
.ach__tab.is-on { color: var(--c-main); }
.ach__ink {
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 0; height: 3px;
  border-radius: 3px 3px 0 0;
  background: var(--c-main);
  transition: transform .42s var(--ease), width .42s var(--ease);
  z-index: 1;
}
.ach__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.ach__card {
  display: block;
  position: relative;
  overflow: hidden;
  top: 0;
  border-radius: var(--r-m);
  background: #fff;
  box-shadow: var(--shadow-s);
  transition: transform .45s var(--ease), box-shadow .45s var(--ease), opacity .4s var(--ease), top .45s var(--ease);
}
.ach__card.is-hide { display: none; }
.ach__card.is-in { animation: cardIn .55s var(--ease) backwards; }
@keyframes cardIn { from { opacity: 0; transform: translateY(24px) scale(.97); } to { opacity: 1; transform: none; } }
.ach__card:hover { top: -8px; box-shadow: var(--shadow-m); }
.ach__thumb { display: block; position: relative; overflow: hidden; aspect-ratio: 625 / 447; }
.ach__thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .8s var(--ease); }
.ach__card:hover .ach__thumb img { transform: scale(1.08); }
.ach__hover {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 22px;
  background: linear-gradient(0deg, rgba(7, 50, 79, .72), rgba(28, 78, 154, .42));
  opacity: 0;
  transition: opacity .4s var(--ease);
}
.ach__card:hover .ach__hover { opacity: 1; }
.ach__hover i { transform: scale(.6) translateY(10px); transition: transform .45s var(--ease); }
.ach__card:hover .ach__hover i { transform: scale(1) translateY(0); }
.ach__name {
  display: block;
  padding: 20px 22px;
  font-size: 16.5px;
  font-weight: 600;
  color: var(--c-ink);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  position: relative;
  transition: color .35s var(--ease);
}
.ach__name::after {
  content: "";
  position: absolute;
  left: 22px; bottom: 14px;
  width: 0; height: 2px;
  background: var(--c-accent);
  transition: width .4s var(--ease);
}
.ach__card:hover .ach__name { color: var(--c-main); }
.ach__card:hover .ach__name::after { width: 26px; }
.ach__more { text-align: center; margin-top: 52px; }

/* ---------- 11. 通栏广告栏 ---------- */
.adbar {
  position: relative;
  overflow: hidden;
  padding: 0;
  background: var(--c-main-dd);
}
.adbar__bg {
  position: absolute;
  inset: -60% 0;
  background: url(../images/gg-1.jpg) no-repeat center / cover;
  will-change: transform;
}
.adbar::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(7, 50, 79, .96) 0%, rgba(21, 57, 112, .82) 46%, rgba(28, 78, 154, .5) 100%);
}
.adbar__in {
  position: relative;
  z-index: 2;
  min-height: 170px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 34px;
  padding-top: 34px;
  padding-bottom: 34px;
}
.adbar__slogan {
  font-size: 34px;
  font-weight: 800;
  color: #fff;
  letter-spacing: .04em;
  line-height: 1.3;
  text-shadow: 0 6px 30px rgba(0, 0, 0, .34);
}
.adbar__sub { margin-top: 10px; color: rgba(255, 255, 255, .76); font-size: 15px; letter-spacing: .03em; }
.adbar__right { display: flex; flex-direction: column; align-items: flex-end; gap: 4px; }
.adbar__label {
  font-size: 12px;
  letter-spacing: .3em;
  color: rgba(255, 255, 255, .62);
  text-transform: uppercase;
}
.adbar__tel {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 40px;
  font-weight: 800;
  color: #fff;
  position: relative;
  top: 0;
  line-height: 1.2;
  letter-spacing: .02em;
  font-family: "DIN Alternate", "Bahnschrift", "Arial Narrow", Arial, sans-serif;
  transition: all .35s var(--ease);
}
.adbar__tel i { font-size: 26px; color: var(--c-accent); animation: shake 2.6s infinite; }
@keyframes shake { 0%, 62%, 100% { transform: rotate(0); } 68% { transform: rotate(-14deg); } 74% { transform: rotate(14deg); } 80% { transform: rotate(-8deg); } 86% { transform: rotate(0); } }
.adbar__tel:hover { color: var(--c-accent); top: -3px; }

/* ---------- 12. 四大优势 ---------- */
.adv { background: linear-gradient(180deg, var(--c-bg) 0%, #fff 60%); }
.adv__list { display: flex; flex-direction: column; gap: 30px; }
.adv__row {
  display: grid;
  grid-template-columns: 420px 1fr;
  gap: 46px;
  align-items: center;
  background: #fff;
  border-radius: var(--r-l);
  padding: 34px;
  border: 1px solid var(--c-line);
  box-shadow: var(--shadow-s);
  position: relative;
  overflow: hidden;
  top: 0;
  transition: box-shadow .45s var(--ease), border-color .45s var(--ease), top .45s var(--ease);
}
.adv__row::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 4px;
  background: var(--c-main);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform .5s var(--ease);
}
.adv__row:hover { box-shadow: var(--shadow-m); border-color: rgba(28, 78, 154, .16); top: -4px; }
.adv__row:hover::before { transform: scaleY(1); }
.adv__row--rev { grid-template-columns: 1fr 420px; }
.adv__row--rev .adv__pic { order: 2; }
.adv__row--rev .adv__box { order: 1; }
.adv__pic {
  position: relative;
  aspect-ratio: 3 / 2;
  border-radius: var(--r-m);
  overflow: hidden;
  background: linear-gradient(140deg, var(--c-bg) 0%, #dfeaf5 100%);
}
/* 配图铺满整个图框（无内边距、不留白），替换任意 3:2 图片即可完整贴合 */
.adv__pic img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform .6s var(--ease);
}
.adv__row:hover .adv__pic img { transform: scale(1.045); }
.adv__box { position: relative; }
.adv__num {
  position: absolute;
  right: 0; top: -14px;
  font-size: 64px;
  font-weight: 900;
  line-height: 1;
  color: rgba(28, 78, 154, .07);
  font-family: "DIN Alternate", "Bahnschrift", Arial, sans-serif;
  pointer-events: none;
}
.adv__t { font-size: 23px; font-weight: 700; color: var(--c-ink); line-height: 1.45; padding-right: 60px; }
.adv__d { margin-top: 8px; font-size: 14.5px; color: var(--c-accent); letter-spacing: .02em; font-weight: 600; }
.adv__ul { margin-top: 18px; display: grid; gap: 9px; }
.adv__ul li {
  position: relative;
  padding-left: 24px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-ink-2);
}
.adv__ul li::before {
  content: "";
  position: absolute;
  left: 0; top: 12px;
  width: 8px; height: 8px;
  border-radius: 2px;
  background: var(--c-accent);
  transform: rotate(45deg);
}

/* ---------- 13. 资源平台 ---------- */
.partner {
  position: relative;
  overflow: hidden;
  background: var(--c-main-dd);
  padding: 96px 0 104px;
}
.partner__bg {
  position: absolute;
  inset: -35% 0;
  background: url(../images/case-bj.jpg) no-repeat center / cover;
  opacity: .34;
  will-change: transform;
}
.partner::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(120% 90% at 50% 0%, rgba(28, 78, 154, .5) 0%, rgba(7, 50, 79, .92) 62%);
}
.partner__in { position: relative; z-index: 2; }
.partner__grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}
.partner__item {
  display: block;
  position: relative;
  top: 0;
  padding: 14px 14px 0;
  border-radius: var(--r-m);
  background: rgba(255, 255, 255, .07);
  border: 1px solid rgba(255, 255, 255, .14);
  backdrop-filter: blur(6px);
  overflow: hidden;
  transition: background .45s var(--ease), border-color .45s var(--ease), box-shadow .45s var(--ease), top .45s var(--ease);
}
.partner__item:hover { background: #fff; border-color: #fff; top: -8px; box-shadow: 0 20px 44px rgba(0, 0, 0, .28); }
.partner__pic { display: block; aspect-ratio: 310 / 270; overflow: hidden; border-radius: var(--r-s); background: #fff; }
.partner__pic img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease); }
.partner__item:hover .partner__pic img { transform: scale(1.06); }
.partner__name {
  display: block;
  padding: 13px 4px 15px;
  text-align: center;
  font-size: 14.5px;
  color: rgba(255, 255, 255, .82);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color .35s var(--ease);
}
.partner__item:hover .partner__name { color: var(--c-main); }

/* ---------- 14. 新闻中心 ---------- */
.news { background: #fff; }
.news__wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: stretch; }
.news__feat { position: relative; }
.news__feat-in {
  display: flex;
  flex-direction: column;
  height: 100%;
  position: relative;
  top: 0;
  border-radius: var(--r-l);
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--c-line);
  box-shadow: var(--shadow-s);
  transition: box-shadow .45s var(--ease), border-color .45s var(--ease), top .45s var(--ease);
}
.news__feat-in:hover { box-shadow: var(--shadow-m); border-color: rgba(28, 78, 154, .16); top: -6px; }
.news__feat-pic { display: block; overflow: hidden; aspect-ratio: 16 / 10; }
.news__feat-pic img { width: 100%; height: 100%; object-fit: cover; transition: transform .8s var(--ease); }
.news__feat-in:hover .news__feat-pic img { transform: scale(1.07); }
.news__feat-txt { display: block; padding: 26px 28px 30px; position: relative; }
.news__date {
  position: absolute;
  right: 28px; top: -34px;
  width: 68px; height: 68px;
  border-radius: var(--r-m);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: linear-gradient(140deg, var(--c-main), var(--c-main-l));
  color: #fff;
  box-shadow: 0 12px 26px rgba(21, 57, 112, .3);
}
.news__date b { font-size: 21px; line-height: 1.1; font-weight: 800; font-family: "DIN Alternate", "Bahnschrift", Arial, sans-serif; }
.news__date em { font-style: normal; font-size: 11px; color: rgba(255, 255, 255, .76); }
.news__feat-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--c-ink);
  line-height: 1.55;
  padding-right: 76px;
  transition: color .35s var(--ease);
}
.news__feat-in:hover .news__feat-title { color: var(--c-main); }
.news__feat-desc { margin-top: 14px; font-size: 14.5px; line-height: 1.95; color: var(--c-mut); }
.news__more { display: inline-flex; align-items: center; gap: 8px; margin-top: 20px; font-size: 14.5px; font-weight: 600; color: var(--c-accent); }
.news__more i { font-size: 12px; transition: transform .35s var(--ease); }
.news__feat-in:hover .news__more i { transform: translateX(5px); }

.news__list {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--c-line);
  border-radius: var(--r-l);
  padding: 8px 26px;
  background: linear-gradient(180deg, #fbfdff, #fff);
  box-shadow: var(--shadow-s);
}
.news__row {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 18px 12px;
  margin: 0 -12px;
  border-radius: 10px;
  border-bottom: 1px dashed var(--c-line);
  transition: background .35s var(--ease), box-shadow .35s var(--ease);
}
/* hover 只改“绘制”属性（背景/内阴影），不产生任何几何变化，
   因此右侧列表的动效不会影响下方友情链接与版权的位置 */
.news__row:hover { background: rgba(28, 78, 154, .045); box-shadow: inset 3px 0 0 0 var(--c-main); }
.news__row-date {
  flex: 0 0 auto;
  width: 62px;
  text-align: center;
  padding-right: 18px;
  border-right: 1px solid var(--c-line);
}
.news__row-date b { display: block; font-size: 17px; font-weight: 800; color: var(--c-main); font-family: "DIN Alternate", "Bahnschrift", Arial, sans-serif; transition: color .35s var(--ease); }
.news__row-date em { font-style: normal; font-size: 11.5px; color: var(--c-mut); }
.news__row:hover .news__row-date b { color: var(--c-accent); }
.news__row-txt { flex: 1; min-width: 0; }
.news__row-title {
  display: block;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--c-ink);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color .35s var(--ease);
}
.news__row:hover .news__row-title { color: var(--c-main); }
.news__row-desc {
  display: block;
  margin-top: 3px;
  font-size: 13.5px;
  color: var(--c-mut);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.news__row-ico { color: #c3d2e0; font-size: 14px; transition: all .35s var(--ease); }
.news__row:hover .news__row-ico { color: var(--c-accent); transform: translateX(4px); }
.news__all {
  margin-top: auto;
  padding: 20px 0 16px;
  text-align: center;
  font-size: 15px;
  font-weight: 600;
  color: var(--c-main);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  transition: all .35s var(--ease);
}
.news__all i { font-size: 12px; transition: transform .35s var(--ease); }
.news__all:hover { color: var(--c-accent); }
.news__all:hover i { transform: translateX(5px); }

/* ---------- 15. 友情链接 ---------- */
.flinks {
  background: #eef3f8;
  border-top: 1px solid var(--c-line);
}
.flinks__in {
  display: flex;
  align-items: center;
  gap: 22px;
  min-height: 60px;
  padding-top: 11px;
  padding-bottom: 11px;
}
.flinks__label {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14.5px;
  font-weight: 700;
  color: var(--c-ink);
  padding-right: 22px;
  border-right: 1px solid #d5e0ea;
}
.flinks__label i { color: var(--c-accent); font-size: 13px; }
.flinks__bd { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 24px; }
.flinks__bd a { font-size: 14px; color: var(--c-mut); transition: color .3s var(--ease); }
.flinks__bd a:hover { color: var(--c-main); }

/* ---------- 16. 页脚 ---------- */
.foot {
  position: relative;
  color: rgba(255, 255, 255, .7);
  background:
    linear-gradient(180deg, rgba(7, 42, 70, .96), rgba(6, 34, 56, .99)),
    url(../images/footer-bj.jpg) no-repeat center bottom / cover;
  padding-top: 66px;
}
.foot__in {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.4fr .9fr;
  gap: 44px;
  padding-bottom: 52px;
}
.foot__logo { display: inline-block; margin-bottom: 20px; }
.foot__logo img { width: 180px; height: 65px; object-fit: contain; filter: brightness(0) invert(1); }
.foot__desc { font-size: 14px; line-height: 1.95; color: rgba(255, 255, 255, .58); }
.foot__social { display: flex; gap: 12px; margin-top: 24px; }
.foot__social a {
  width: 40px; height: 40px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 16px;
  color: rgba(255, 255, 255, .8);
  background: rgba(255, 255, 255, .08);
  border: 1px solid rgba(255, 255, 255, .12);
  transition: all .35s var(--ease);
}
.foot__social a:hover { background: var(--c-accent); border-color: var(--c-accent); color: #fff; transform: translateY(-4px); }

.foot__title {
  font-size: 17px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 22px;
  position: relative;
  padding-bottom: 14px;
}
.foot__title::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 30px; height: 2px;
  background: var(--c-accent);
}
.foot__nav { display: grid; grid-template-columns: 1fr 1fr; gap: 4px 16px; }
.foot__nav a { display: inline-block; font-size: 14px; line-height: 2.1; color: rgba(255, 255, 255, .66); transition: all .3s var(--ease); }
.foot__nav a:hover { color: var(--c-accent); transform: translateX(4px); }

.foot__contact { display: grid; gap: 12px; }
.foot__contact li { display: flex; gap: 11px; font-size: 14px; line-height: 1.8; color: rgba(255, 255, 255, .66); }
.foot__contact i { color: var(--c-accent); font-size: 14px; margin-top: 6px; }
.foot__contact a:hover { color: var(--c-accent); }

.foot__qr {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px;
  border-radius: var(--r-m);
  background: rgba(255, 255, 255, .07);
  border: 1px solid rgba(255, 255, 255, .12);
}
.foot__qr img { width: 104px; height: 104px; object-fit: cover; border-radius: var(--r-s); background: #fff; padding: 4px; }
.foot__qr span { font-size: 13px; line-height: 1.9; color: rgba(255, 255, 255, .7); }

.foot__bar { border-top: 1px solid rgba(255, 255, 255, .1); }
.foot__bar-in {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 62px;
  padding-top: 14px;
  padding-bottom: 14px;
  font-size: 13.5px;
  color: rgba(255, 255, 255, .5);
}
.foot__copy { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 16px; }
.foot__copy a { color: rgba(255, 255, 255, .62); }
.foot__copy a:hover { color: var(--c-accent); }
.foot__power { color: rgba(255, 255, 255, .42); }
.foot__links { display: flex; gap: 19px; }
.foot__links a { color: rgba(255, 255, 255, .5); }
.foot__links a:hover { color: var(--c-accent); }

/* ---------- 17. 返回顶部 / 移动底栏 ---------- */
.totop {
  position: fixed;
  right: 26px;
  bottom: 106px;
  width: 46px; height: 46px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 16px;
  background: linear-gradient(140deg, var(--c-main), var(--c-main-l));
  box-shadow: 0 12px 28px rgba(21, 57, 112, .34);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: all .4s var(--ease);
  z-index: 800;
}
.totop.is-on { opacity: 1; visibility: visible; transform: translateY(0); }
.totop:hover { color: #fff; background: linear-gradient(140deg, var(--c-accent), var(--c-accent-d)); }

.mbar { display: none; }

/* ---------- 18. 滚动显现动画 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(38px);
  transition: opacity .9s var(--ease), transform .9s var(--ease);
}
/* 仅在「尚未显现」期间提升合成层；显现完成后立刻释放。
   元素若长期留在合成层里，其文字只能用灰阶抗锯齿渲染，视觉上会发虚。 */
[data-reveal]:not(.is-in) { will-change: opacity, transform; }
[data-reveal="left"] { transform: translateX(-48px); }
[data-reveal="right"] { transform: translateX(48px); }
[data-reveal="zoom"] { transform: scale(.9); }
[data-reveal].is-in { opacity: 1; transform: none; will-change: auto; }

/* ---------- 19. 响应式 ---------- */
@media (max-width: 1400px) {
  .container { padding: 0 28px; }
  .nav__a { padding: 0 16px; font-size: 15px; }
  .hero__title { font-size: 46px; }
  .sec-hd__title { font-size: 34px; }
}

@media (max-width: 1200px) {
  .sec { padding: 80px 0; }
  .hdr__search { width: 180px; }
  .hdr__search:focus-within { width: 210px; }
  .nav__a { padding: 0 12px; font-size: 14.5px; }
  .nav__tel { display: none; }
  .about__body { gap: 44px; }
  .about__seal { right: -10px; }
  .qnav { grid-template-columns: repeat(2, 1fr); }
  .ach__grid { grid-template-columns: repeat(3, 1fr); gap: 20px; }
  .adv__row, .adv__row--rev { grid-template-columns: 340px 1fr; gap: 32px; }
  .partner__grid { grid-template-columns: repeat(4, 1fr); }
  .foot__in { grid-template-columns: 1fr 1fr; gap: 36px; }
}

@media (max-width: 1024px) {
  .hdr__hot { display: none; }
  .hdr__search { margin-left: auto; }
  .hdr__burger { display: flex; }
  .nav { display: none; }
  .hero { height: 54vw; }
  .hero__title { font-size: 38px; }
  .hero__sub { font-size: 16px; }
  .hero__arrow { display: none; }
  .about__body { grid-template-columns: 1fr; gap: 46px; }
  .about__media { max-width: 620px; }
  .ach__grid { grid-template-columns: repeat(2, 1fr); }
  .adv__row, .adv__row--rev { grid-template-columns: 1fr; }
  .adv__row--rev .adv__pic, .adv__row--rev .adv__box { order: initial; }
  .partner__grid { grid-template-columns: repeat(3, 1fr); }
  .news__wrap { grid-template-columns: 1fr; gap: 30px; }
  .adbar__in { flex-direction: column; align-items: flex-start; gap: 20px; }
  .adbar__right { align-items: flex-start; }
  .adbar__tel { font-size: 32px; }
}

@media (max-width: 767px) {
  .container { padding: 0 18px; }
  .sec { padding: 56px 0; }
  .sec-hd { margin-bottom: 34px; }
  .sec-hd__title { font-size: 26px; }
  .sec-hd__sub { font-size: 13.5px; }
  .sec-hd__eyebrow { font-size: 11px; letter-spacing: .24em; }
  .sec-hd:not(.sec-hd--left) .sec-hd__eyebrow { gap: 10px; }
  .sec-hd:not(.sec-hd--left) .sec-hd__eyebrow::before,
  .sec-hd:not(.sec-hd--left) .sec-hd__eyebrow::after { width: 26px; }

  .topbar { height: 36px; line-height: 36px; font-size: 12px; }
  .topbar__item--hide, .topbar__msg { display: none; }
  .hdr__in { height: 64px; gap: 12px; }
  .hdr__logo img { width: 150px; height: 54px; }
  .hdr__search { display: none; }
  .hdr__burger { margin-left: auto; }

  .hero { height: 86vw; min-height: 340px; max-height: 480px; }
  .hero__title { font-size: 26px; }
  .hero__sub { font-size: 13.5px; margin-top: 12px; padding-left: 12px; }
  .hero__more { height: 42px; padding: 0 22px; font-size: 13.5px; margin-top: 20px; }
  .hero__dots { bottom: 18px; }
  .hero__dot { width: 22px; }
  .hero__dot.is-on { width: 34px; }
  .hero__scroll { display: none; }

  .qnav { grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 44px; }
  .qnav__item { padding: 16px 14px; gap: 12px; }
  .qnav__ico { width: 42px; height: 42px; font-size: 17px; border-radius: 11px; }
  .qnav__txt b { font-size: 15px; }
  .qnav__txt em { font-size: 10px; letter-spacing: .06em; }

  .about__seal { right: 8px; bottom: 16px; padding: 11px 15px; }
  .about__seal b { font-size: 30px; }
  .about__seal b em { font-size: 15px; }
  .about__seal span { font-size: 11.5px; }
  .about__name { font-size: 22px; }
  .about__desc { font-size: 14.5px; line-height: 1.95; }
  .about__btns { gap: 12px; margin-top: 26px; }
  .btn { height: 44px; padding: 0 22px; font-size: 14px; }

  .ach__tabs { justify-content: flex-start; flex-wrap: nowrap; overflow-x: auto; -webkit-overflow-scrolling: touch; scrollbar-width: none; }
  .ach__tabs::-webkit-scrollbar { display: none; }
  .ach__tab { padding: 11px 18px; font-size: 14.5px; flex: 0 0 auto; }
  .ach__grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .ach__name { padding: 13px 14px; font-size: 14.5px; }
  .ach__name::after { left: 14px; }

  .adbar__in { min-height: 0; padding-top: 30px; padding-bottom: 30px; }
  .adbar__slogan { font-size: 21px; }
  .adbar__sub { font-size: 13px; }
  .adbar__tel { font-size: 25px; }
  .adbar__tel i { font-size: 19px; }
  .adbar__label { font-size: 11px; letter-spacing: .2em; }

  .adv__row { padding: 20px; gap: 20px; border-radius: var(--r-m); }
  .adv__t { font-size: 17.5px; padding-right: 0; }
  .adv__num { font-size: 46px; top: -8px; }
  .adv__d { font-size: 13.5px; }
  .adv__ul li { font-size: 14px; padding-left: 20px; }
  .adv__ul li::before { width: 6px; height: 6px; top: 11px; }

  .partner { padding: 56px 0 62px; }
  .partner__grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .partner__item { padding: 10px 10px 0; }
  .partner__name { font-size: 13px; padding: 10px 2px 12px; }

  .news__feat-txt { padding: 22px 18px 24px; }
  .news__date { right: 18px; top: -30px; width: 58px; height: 58px; }
  .news__date b { font-size: 18px; }
  .news__feat-title { font-size: 17px; padding-right: 62px; }
  .news__feat-desc { font-size: 13.5px; }
  .news__list { padding: 4px 16px; }
  .news__row { gap: 12px; padding: 14px 0; }
  .news__row-date { width: 52px; padding-right: 12px; }
  .news__row-date b { font-size: 15px; }
  .news__row-title { font-size: 14.5px; }
  .news__row-desc { display: none; }

  .flinks { display: none; }

  .foot { padding-top: 44px; padding-bottom: 68px; }
  .foot__in { grid-template-columns: 1fr; gap: 30px; padding-bottom: 34px; }
  .foot__nav { grid-template-columns: 1fr 1fr; }
  .foot__bar-in { flex-direction: column; align-items: flex-start; gap: 8px; font-size: 12.5px; }

  .totop { right: 14px; bottom: 76px; width: 40px; height: 40px; font-size: 14px; }

  .mbar {
    position: fixed;
    left: 0; right: 0; bottom: 0;
    display: flex;
    height: 58px;
    padding-bottom: env(safe-area-inset-bottom);
    background: #fff;
    border-top: 1px solid var(--c-line);
    box-shadow: 0 -6px 22px rgba(21, 57, 112, .1);
    z-index: 850;
  }
  .mbar__item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    font-size: 11.5px;
    color: var(--c-ink-2);
    transition: all .3s var(--ease);
  }
  .mbar__item i { font-size: 18px; color: var(--c-main); }
  .mbar__item--main { flex-direction: row; gap: 7px; font-size: 13.5px; font-weight: 700; letter-spacing: .02em; background: linear-gradient(140deg, var(--c-accent), var(--c-accent-d)); color: #fff; margin: 6px 3px; border-radius: 10px; box-shadow: none; }
  .mbar__item--main i { color: #fff; }
  .mbar__item:active { opacity: .72; }
}

@media (max-width: 420px) {
  .hero__title { font-size: 22px; }
  .hero__more { display: none; }
  .about__tags { gap: 8px 14px; }
  .about__tags span { font-size: 13px; }
  .partner__grid { grid-template-columns: repeat(2, 1fr); }
}

/* ==========================================================================
   20. 内页公共组件（页头 / 面包屑 / 两栏 / 侧栏 / 分页 / 列表 / 详情）
   ========================================================================== */

/* ---------- 20.1 内页页头 ---------- */
/* 电脑端严格按素材 1920×500 比例展示，不裁切；高度封顶 500px */
.pagehero {
  position: relative; display: flex; align-items: center; overflow: hidden;
  background: var(--c-main-dd);
  aspect-ratio: 1920 / 500; height: auto;
  min-height: 320px; max-height: 500px;
}
.pagehero--sm { /* 桌面端与普通内页保持同一大图比例，收窄只发生在平板/手机 */ }
.pagehero__bg { position: absolute; inset: 0; z-index: 0; }
.pagehero__bg img { width: 100%; height: 100%; object-fit: cover; object-position: center 42%; }
.pagehero__scrim {
  position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(98deg, rgba(9, 26, 52, .92) 0%, rgba(13, 35, 69, .78) 40%, rgba(28, 78, 154, .36) 100%);
}
/* 无底图变体（搜索页等）：纯渐变 + 细网格，避免素材内嵌文案与页面标题冲突 */
.pagehero--plain {
  background:
    radial-gradient(120% 150% at 88% 10%, rgba(28, 78, 154, .88) 0%, rgba(28, 78, 154, 0) 56%),
    radial-gradient(90% 130% at 4% 100%, rgba(239, 132, 26, .14) 0%, rgba(239, 132, 26, 0) 58%),
    linear-gradient(118deg, #091a34 0%, #0d2345 46%, #14396f 100%);
}
.pagehero--plain::after {
  content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, .06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .06) 1px, transparent 1px);
  background-size: 46px 46px;
  -webkit-mask-image: linear-gradient(98deg, #000 0%, rgba(0, 0, 0, .12) 74%, transparent 100%);
          mask-image: linear-gradient(98deg, #000 0%, rgba(0, 0, 0, .12) 74%, transparent 100%);
}
.pagehero__in { position: relative; z-index: 2; }
.pagehero__en {
  display: flex; align-items: center; gap: 14px;
  font-size: 12.5px; font-weight: 700; letter-spacing: .36em; text-transform: uppercase;
  color: var(--c-accent);
}
.pagehero__en::before { content: ""; width: 40px; height: 2px; background: var(--c-accent); }
.pagehero__title { margin-top: 16px; font-size: 44px; line-height: 1.24; font-weight: 800; color: #fff; letter-spacing: .02em; }
.pagehero__sub { margin-top: 14px; max-width: 720px; font-size: 15px; line-height: 1.8; color: rgba(255, 255, 255, .76); }
.pagehero__sub:empty { display: none; }

/* ---------- 20.2 面包屑 ---------- */
.crumb { background: var(--c-bg); border-bottom: 1px solid var(--c-line); }
.crumb__in { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; min-height: 54px; font-size: 13.5px; color: var(--c-mut); }
.crumb__in a { color: var(--c-mut); }
.crumb__in a:hover { color: var(--c-main); }
.crumb__in i { font-size: 10px; color: #b3c3d3; }

/* ---------- 20.3 两栏容器 ---------- */
.inner { display: grid; grid-template-columns: 272px minmax(0, 1fr); gap: 44px; align-items: start; padding-top: 62px; padding-bottom: 96px; }
.inner--full { display: block; }

/* ---------- 20.4 侧栏 ---------- */
/* 顶距跟随吸顶头部实际高度（--stick-h 由 JS 写入），超出视口时侧栏内部滚动，
   保证下拉过程中左侧导航始终能被完整查看。
   ⚠️ 滚动容器会在 padding box 处硬裁子元素阴影 → 侧栏内一律不投影，
   只靠描边/底色区隔，避免卡片外出现直角灰块 */
.side {
  --side-top: calc(var(--stick-h, 138px) + 22px);
  display: grid; gap: 22px; align-content: start;
  position: sticky; top: var(--side-top);
  max-height: calc(100vh - var(--side-top) - 22px);
  overflow-y: auto; overscroll-behavior: contain;
  scrollbar-width: thin; scrollbar-color: rgba(28, 78, 154, .28) transparent;
}
.side::-webkit-scrollbar { width: 5px; }
.side::-webkit-scrollbar-track { background: transparent; }
.side::-webkit-scrollbar-thumb { border-radius: 3px; background: rgba(28, 78, 154, .26); }
.side::-webkit-scrollbar-thumb:hover { background: rgba(28, 78, 154, .45); }
.side__card { background: #fff; border: 1px solid var(--c-line); border-radius: var(--r-l); box-shadow: var(--shadow-s); overflow: hidden; }
.side__hd { padding: 22px 24px; background: linear-gradient(120deg, var(--c-main) 0%, var(--c-main-l) 100%); color: #fff; }
.side__hd b { display: block; font-size: 19px; font-weight: 800; letter-spacing: .02em; }
.side__hd em { display: block; margin-top: 5px; font-style: normal; font-size: 11px; font-weight: 600; letter-spacing: .26em; text-transform: uppercase; color: rgba(255, 255, 255, .62); }
.side__list { padding: 10px; }
.side__item + .side__item { border-top: 1px solid var(--c-line); }
.side__link {
  position: relative; display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding: 14px; border-radius: 8px; font-size: 14.5px; color: var(--c-ink-2);
  transition: background .3s var(--ease), color .3s var(--ease), padding-left .3s var(--ease);
}
.side__link i { flex: none; font-size: 11px; color: #b9c7d4; transition: color .3s var(--ease); }
.side__link:hover { background: var(--c-bg); color: var(--c-main); padding-left: 20px; }
.side__link:hover i { color: var(--c-main); }
.side__item.is-cur .side__link { background: linear-gradient(120deg, var(--c-main), var(--c-main-l)); color: #fff; font-weight: 600; box-shadow: 0 10px 24px rgba(28, 78, 154, .24); }
.side__item.is-cur .side__link i { color: #fff; }
.side__news { padding: 10px; }
.side__news a { display: flex; gap: 10px; padding: 12px; border-radius: 8px; font-size: 13.5px; line-height: 1.65; color: var(--c-ink-2); transition: background .3s var(--ease), color .3s var(--ease); }
.side__news a:hover { background: var(--c-bg); color: var(--c-main); }
.side__news a b { flex: none; font-size: 12px; font-weight: 700; color: #b9c7d4; }
.side__tel {
  padding: 24px; border-radius: var(--r-l); color: #fff; overflow: hidden;
  background: linear-gradient(140deg, var(--c-main-dd) 0%, var(--c-main) 100%);
  box-shadow: 0 16px 36px rgba(21, 57, 112, .2);
}

/* ⚠️ .side 是滚动容器（overflow-y:auto），子卡片阴影会被在 padding box 处硬裁，
   在卡片右下留下直角灰块 → 侧栏内统一去掉投影，靠描边 + 深色底区分层次 */
.side .side__card { box-shadow: none; border-color: #e4eaf2; }
.side .side__tel { box-shadow: none; }
.side__tel-lab { display: block; font-size: 12px; letter-spacing: .22em; color: rgba(255, 255, 255, .62); }
.side__tel-num { display: flex; align-items: center; gap: 10px; margin-top: 10px; font-size: 23px; font-weight: 800; color: #fff; }
.side__tel-num i { font-size: 18px; color: var(--c-accent); transition: color .3s var(--ease); }
.side__tel-num:hover { color: var(--c-accent); }
.side__tel-tip { display: block; margin-top: 12px; padding-top: 12px; border-top: 1px solid rgba(255, 255, 255, .16); font-size: 12.5px; color: rgba(255, 255, 255, .66); }

/* ---------- 20.5 内容面板 ---------- */
.panel { min-width: 0; }
.panel__hd { margin-bottom: 34px; padding-bottom: 22px; border-bottom: 1px solid var(--c-line); }
.panel__hd--gap { margin-top: 64px; }
.panel__en { display: flex; align-items: center; gap: 12px; font-size: 12px; font-weight: 700; letter-spacing: .3em; text-transform: uppercase; color: var(--c-accent); }
.panel__en::before { content: ""; width: 26px; height: 2px; background: var(--c-accent); }
.panel__title { margin-top: 12px; font-size: 28px; line-height: 1.32; font-weight: 800; color: var(--c-ink); }
.panel__title em { font-style: normal; color: var(--c-main); }
.panel__desc { margin-top: 10px; font-size: 14px; color: var(--c-mut); }

/* ---------- 20.6 富文本正文 ---------- */
.entry { font-size: 15.5px; line-height: 1.95; color: var(--c-ink-2); word-wrap: break-word; overflow-wrap: break-word; }
.entry > *:first-child { margin-top: 0 !important; }
.entry p { margin: 0 0 18px; }
.entry h2, .entry h3, .entry h4, .entry h5 { margin: 34px 0 16px; color: var(--c-ink); font-weight: 800; line-height: 1.45; }
.entry h2 { font-size: 22px; }
.entry h3 { font-size: 19px; }
.entry h4 { font-size: 17px; }
.entry a { color: var(--c-main); text-decoration: underline; text-underline-offset: 3px; }
.entry ul, .entry ol { margin: 0 0 18px; padding-left: 4px; }
.entry ul { list-style: none; }
.entry ul li { position: relative; margin-bottom: 9px; padding-left: 22px; }
.entry ul li::before { content: ""; position: absolute; left: 2px; top: .74em; width: 6px; height: 6px; border-radius: 50%; background: var(--c-main); }
.entry ol { padding-left: 22px; list-style: decimal; }
.entry ol li { margin-bottom: 9px; }
/* ⚠️ 富文本粘贴的图片常带内联 style="width:1000px;height:1333px"，
   内联样式优先级高于普通 CSS：max-width 会把宽度压到容器宽、而 height 仍按 1000px 算，
   于是窄屏（手机）上图片被纵向拉伸变形。height 必须用 !important 才能压过内联样式，
   让浏览器按原始比例重算高度 */
.entry img { max-width: 100%; height: auto !important; margin: 12px 0; border-radius: var(--r-m); }
.entry p > img:only-child { display: block; margin-left: auto; margin-right: auto; }
.entry table { width: 100%; margin: 20px 0; border-collapse: collapse; font-size: 14.5px; }
.entry th, .entry td { padding: 12px 14px; border: 1px solid var(--c-line); text-align: left; }
.entry th { background: var(--c-bg); font-weight: 700; color: var(--c-ink); }
.entry blockquote { margin: 22px 0; padding: 18px 24px; border-left: 4px solid var(--c-main); background: var(--c-bg); border-radius: 0 var(--r-m) var(--r-m) 0; }
.entry iframe, .entry video { max-width: 100%; border: 0; border-radius: var(--r-m); }
.entry strong, .entry b { color: var(--c-ink); }
.entry hr { margin: 30px 0; border: 0; border-top: 1px solid var(--c-line); }

/* ---------- 20.7 分页（适配 Paging.php 输出） ---------- */
.pag { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 8px; margin-top: 46px; }
.pag > span { display: inline-flex; }
.pag a, .pag span.page-num {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 42px; height: 42px; padding: 0 15px;
  border: 1px solid var(--c-line); border-radius: 8px; background: #fff;
  color: var(--c-ink-2); font-size: 14px; transition: all .3s var(--ease);
}
.pag a:hover { color: #fff; background: var(--c-main); border-color: var(--c-main); }
.pag .page-numbar { display: inline-flex; gap: 8px; }
.pag .page-num { padding: 0 8px; }
.pag span.page-num { border-style: dashed; color: var(--c-mut); }
.pag .page-num-current { color: #fff !important; background: var(--c-main) !important; border-color: var(--c-main) !important; font-weight: 700; box-shadow: 0 10px 22px rgba(28, 78, 154, .26); }
/* 统计条与页码按钮同款：白底 + 1px 描边 + 8px 圆角 */
.pag .page-status {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 42px; height: 42px; padding: 0 15px;
  border: 1px solid var(--c-line); border-radius: 8px; background: #fff;
  color: var(--c-ink-2); font-size: 14px; white-space: nowrap;
}
.pag .page-none { display: inline-flex; align-items: center; justify-content: center; min-height: 42px; padding: 0 24px; border: 1px dashed var(--c-line); border-radius: 8px; color: var(--c-mut) !important; font-size: 14px; }
/* 边界页码（首页/前一页/后一页/尾页 无跳转）呈禁用态 */
.pag a[href="javascript:;"] {
  border-style: dashed; border-color: var(--c-line); background: var(--c-bg-2, #f4f7fa);
  color: #b3c0cc; pointer-events: none;
}

/* ---------- 20.8 分类筛选条 ---------- */
.tabs { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 34px; }
.tabs a {
  display: inline-flex; align-items: center; height: 42px; padding: 0 24px;
  border: 1px solid var(--c-line); border-radius: 999px; background: #fff;
  font-size: 14.5px; color: var(--c-ink-2); transition: all .35s var(--ease);
}
.tabs a:hover { border-color: var(--c-main); color: var(--c-main); }
.tabs a.is-cur { color: #fff; background: linear-gradient(120deg, var(--c-main), var(--c-main-l)); border-color: transparent; font-weight: 600; box-shadow: 0 10px 24px rgba(28, 78, 154, .24); }

/* ---------- 20.9 新闻列表 ---------- */
.nlist { display: grid; gap: 18px; }
.nlist__link {
  display: grid; grid-template-columns: 250px minmax(0, 1fr) 46px; align-items: center; gap: 26px;
  padding: 18px; border: 1px solid var(--c-line); border-radius: var(--r-l); background: #fff;
  box-shadow: var(--shadow-s); position: relative; top: 0;
  transition: box-shadow .4s var(--ease), border-color .4s var(--ease), top .4s var(--ease);
}
.nlist__link:hover { top: -4px; box-shadow: var(--shadow-m); border-color: rgba(28, 78, 154, .18); }
.nlist__link--txt { grid-template-columns: minmax(0, 1fr) 46px; }
.nlist__pic { display: block; aspect-ratio: 8 / 5; border-radius: var(--r-m); overflow: hidden; background: var(--c-bg-2); }
.nlist__pic img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease); }
.nlist__link:hover .nlist__pic img { transform: scale(1.05); }
.nlist__date { display: flex; align-items: center; gap: 7px; font-size: 12.5px; color: var(--c-mut); }
.nlist__date b { font-size: 13.5px; font-weight: 700; color: var(--c-main); }
.nlist__date em { font-style: normal; }
.nlist__tt { display: block; margin-top: 9px; font-size: 18px; font-weight: 700; line-height: 1.5; color: var(--c-ink); transition: color .3s var(--ease); }
.nlist__link:hover .nlist__tt { color: var(--c-main); }
.nlist__ds { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-top: 9px; font-size: 13.5px; line-height: 1.78; color: var(--c-mut); }
.nlist__go { display: grid; place-items: center; width: 46px; height: 46px; border-radius: 50%; background: var(--c-bg); color: var(--c-main); font-size: 14px; transition: all .4s var(--ease); }
.nlist__link:hover .nlist__go { color: #fff; background: var(--c-main); }

/* ---------- 20.10 工程 / 案例卡片网格 ---------- */
.pgrid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.pcard {
  display: block; overflow: hidden; border: 1px solid var(--c-line); border-radius: var(--r-l);
  background: #fff; box-shadow: var(--shadow-s); position: relative; top: 0;
  transition: box-shadow .45s var(--ease), border-color .45s var(--ease), top .45s var(--ease);
}
.pcard:hover { top: -6px; box-shadow: var(--shadow-l); border-color: rgba(28, 78, 154, .18); }
.pcard__pic { display: block; position: relative; aspect-ratio: 4 / 3; overflow: hidden; background: var(--c-bg-2); }
.pcard__pic img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s var(--ease); }
.pcard:hover .pcard__pic img { transform: scale(1.06); }
.pcard__pic::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(13, 35, 69, 0) 42%, rgba(13, 35, 69, .72) 100%); opacity: 0; transition: opacity .45s var(--ease); }
.pcard:hover .pcard__pic::after { opacity: 1; }
.pcard__tag { position: absolute; left: 14px; top: 14px; z-index: 2; padding: 5px 13px; border-radius: 999px; background: rgba(255, 255, 255, .93); font-size: 12px; font-weight: 600; color: var(--c-main); }
.pcard__bd { display: block; padding: 20px 22px 24px; }
.pcard__tt { display: block; font-size: 17px; font-weight: 700; line-height: 1.5; color: var(--c-ink); transition: color .3s var(--ease); }
.pcard:hover .pcard__tt { color: var(--c-main); }
.pcard__ds { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-top: 9px; font-size: 13.5px; line-height: 1.78; color: var(--c-mut); }
.pcard__more { display: inline-flex; align-items: center; gap: 8px; margin-top: 16px; font-size: 13px; font-weight: 600; color: var(--c-main); }
.pcard__more i { font-size: 11px; transition: transform .35s var(--ease); }
.pcard:hover .pcard__more i { transform: translateX(4px); }

/* ---------- 20.11 图文网格（资源平台） ---------- */
.gal { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
.gal__item {
  display: block; overflow: hidden; border: 1px solid var(--c-line); border-radius: var(--r-m);
  background: #fff; box-shadow: var(--shadow-s); position: relative; top: 0;
  transition: box-shadow .4s var(--ease), border-color .4s var(--ease), top .4s var(--ease);
}
.gal__item:hover { top: -6px; box-shadow: var(--shadow-m); border-color: rgba(28, 78, 154, .18); }
.gal__pic { display: block; position: relative; aspect-ratio: 4 / 3; overflow: hidden; background: #fff; border-bottom: 1px solid var(--c-line); }
.gal__pic img { width: 100%; height: 100%; padding: 20px; object-fit: contain; transition: transform .6s var(--ease); }
.gal__item:hover .gal__pic img { transform: scale(1.05); }
.gal__tt { display: block; padding: 13px 16px; font-size: 13.5px; font-weight: 600; color: var(--c-mut); text-align: center; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; transition: color .3s var(--ease); }
.gal__item:hover .gal__tt { color: var(--c-main); }

/* ---------- 20.12 文章详情 ---------- */
.art { max-width: 100%; }
.art__hd { padding-bottom: 24px; border-bottom: 1px solid var(--c-line); }
.art__tt { font-size: 30px; line-height: 1.45; font-weight: 800; color: var(--c-ink); }
.art__sub { margin-top: 12px; font-size: 15px; color: var(--c-mut); }
.art__meta { display: flex; flex-wrap: wrap; gap: 10px 28px; margin-top: 18px; font-size: 13.5px; color: var(--c-mut); }
.art__meta span { display: inline-flex; align-items: center; gap: 8px; }
.art__meta i { font-size: 13px; color: var(--c-main); }
.art__body { padding: 34px 0 10px; }

/* 上一篇 / 返回列表 / 下一篇 —— 三张同款卡片，标题与标签同一行 */
.art__ft {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px; align-items: stretch;
  margin-top: 42px; padding-top: 28px; border-top: 1px solid var(--c-line);
}
.art__pn-i {
  display: flex; align-items: center; gap: 12px; min-width: 0; min-height: 62px;
  padding: 0 20px; border: 1px solid var(--c-line); border-radius: var(--r-m);
  background: #fff; box-shadow: var(--shadow-s); position: relative; top: 0;
  font-size: 14.5px; line-height: 1.5; color: var(--c-ink-2);
  transition: border-color .35s var(--ease), box-shadow .35s var(--ease), top .35s var(--ease), color .35s var(--ease);
}
.art__pn-i em {
  flex: none; display: inline-flex; align-items: center; gap: 7px;
  font-style: normal; font-size: 12px; font-weight: 700; letter-spacing: .08em;
  text-transform: uppercase; color: var(--c-mut); transition: color .35s var(--ease);
}
.art__pn-i em i { font-size: 11px; color: var(--c-main); }
.art__pn-i > span { flex: 1 1 auto; min-width: 0; }
.art__pn-i > span > a {
  display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  color: inherit; transition: color .35s var(--ease);
}
.art__pn-i > span > a::after { content: ""; position: absolute; inset: 0; }
/* 下一篇：视觉镜像（标题在左、标签在右） */
.art__pn-i--next { justify-content: flex-end; }
.art__pn-i--next > span { order: 1; }
.art__pn-i--next em { order: 2; }
/* 中间：返回列表 / 咨询按钮，卡片同款、非胶囊 */
.art__pn-i--mid { justify-content: center; text-align: center; }
.art__pn-i--mid em {
  font-size: 14.5px; font-weight: 600; letter-spacing: .02em; text-transform: none; color: var(--c-main);
}
.art__pn-i--mid em i { font-size: 13px; }
/* 无上/下一篇（输出文本“没有了！”）时呈禁用态 */
.art__pn-i:not([href]):not(:has(a)) { background: var(--c-bg); border-style: dashed; box-shadow: none; }
.art__pn-i:not([href]):not(:has(a)) em { color: #aab7c4; }
.art__pn-i:not([href]):not(:has(a)) > span { color: var(--c-mut); }
.art__pn-i:hover { top: -4px; border-color: rgba(28, 78, 154, .28); box-shadow: var(--shadow-m); }
.art__pn-i:hover > span > a, .art__pn-i:hover em { color: var(--c-main); }
.art__pn-i:not([href]):not(:has(a)):hover { top: 0; border-color: var(--c-line); box-shadow: none; }
.art__pn-i:not([href]):not(:has(a)):hover em { color: #aab7c4; }

/* 详情页多图 */
.pics { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-top: 30px; }
.pics a { display: block; aspect-ratio: 4 / 3; border-radius: var(--r-m); overflow: hidden; background: var(--c-bg-2); border: 1px solid var(--c-line); }
.pics img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease); }
.pics a:hover img { transform: scale(1.06); }

/* 项目信息表 */
.itbl { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; margin-bottom: 30px; background: var(--c-line); border: 1px solid var(--c-line); border-radius: var(--r-m); overflow: hidden; }
.itbl > div { padding: 18px 20px; background: #fff; }
.itbl__k { display: block; font-size: 12.5px; color: var(--c-mut); }
.itbl__v { display: block; margin-top: 6px; font-size: 15px; font-weight: 700; color: var(--c-ink); line-height: 1.5; }

/* ---------- 20.13 联系我们 ---------- */
.cbox { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; margin-bottom: 34px; }
.cbox__item {
  display: flex; gap: 18px; padding: 24px; border: 1px solid var(--c-line); border-radius: var(--r-l);
  background: #fff; box-shadow: var(--shadow-s); position: relative; top: 0;
  transition: box-shadow .4s var(--ease), border-color .4s var(--ease), top .4s var(--ease);
}
.cbox__item:hover { top: -4px; box-shadow: var(--shadow-m); border-color: rgba(28, 78, 154, .16); }
.cbox__ico { display: grid; place-items: center; flex: none; width: 52px; height: 52px; border-radius: 14px; font-size: 20px; color: #fff; background: linear-gradient(140deg, var(--c-main), var(--c-main-l)); box-shadow: 0 10px 24px rgba(28, 78, 154, .24); }
.cbox__bd { min-width: 0; }
.cbox__lab { font-size: 12.5px; letter-spacing: .12em; color: var(--c-mut); }
.cbox__val { display: block; margin-top: 6px; font-size: 16px; font-weight: 700; line-height: 1.6; color: var(--c-ink); word-break: break-all; }
a.cbox__val:hover { color: var(--c-main); }
.cmap { position: relative; height: 380px; border-radius: var(--r-l); overflow: hidden; border: 1px solid var(--c-line); background: linear-gradient(150deg, #e8f0f9 0%, #d6e4f3 55%, #c8dbf0 100%); }
.cmap__grid { position: absolute; inset: 0; background-image: linear-gradient(rgba(28, 78, 154, .07) 1px, transparent 1px), linear-gradient(90deg, rgba(28, 78, 154, .07) 1px, transparent 1px); background-size: 44px 44px; }
.cmap__in { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 14px; padding: 30px; text-align: center; }
.cmap__pin { display: grid; place-items: center; width: 62px; height: 62px; border-radius: 50% 50% 50% 6px; transform: rotate(-45deg); color: #fff; font-size: 24px; background: linear-gradient(140deg, var(--c-main), var(--c-main-l)); box-shadow: 0 16px 32px rgba(21, 57, 112, .3); }
.cmap__pin i { transform: rotate(45deg); }
.cmap__addr { max-width: 520px; font-size: 16px; font-weight: 700; color: var(--c-ink); line-height: 1.7; }
.cmap__btn { display: inline-flex; align-items: center; gap: 8px; height: 44px; padding: 0 24px; border-radius: 999px; font-size: 14px; font-weight: 600; color: #fff; background: linear-gradient(120deg, var(--c-main), var(--c-main-l)); box-shadow: 0 12px 26px rgba(28, 78, 154, .26); }
.cmap__btn:hover { color: #fff; background: linear-gradient(120deg, var(--c-accent), var(--c-accent-d)); }

/* ---------- 20.14 简介图文（about） ---------- */
.abox { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.12fr); gap: 42px; align-items: center; margin-bottom: 46px; }
.abox__pic { position: relative; }
.abox__pic img { width: 100%; border-radius: var(--r-l); box-shadow: var(--shadow-m); }
.abox__frame::before { content: ""; position: absolute; left: -14px; top: -14px; width: 108px; height: 108px; border-left: 3px solid var(--c-accent); border-top: 3px solid var(--c-accent); border-radius: var(--r-l) 0 0 0; }
.abox__name { font-size: 24px; font-weight: 800; color: var(--c-ink); line-height: 1.4; }
.abox__badge { display: inline-flex; align-items: center; gap: 8px; margin-top: 14px; padding: 7px 16px; border-radius: 999px; background: rgba(28, 78, 154, .09); font-size: 13px; font-weight: 600; color: var(--c-main); }
.hl { display: grid; gap: 14px; margin-top: 26px; }
.hl li { display: flex; gap: 12px; font-size: 14.5px; line-height: 1.8; color: var(--c-ink-2); }
.hl li i { flex: none; margin-top: 5px; font-size: 15px; color: var(--c-accent); }
.stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; margin-top: 40px; }
.stats__item { padding: 26px 22px; border: 1px solid var(--c-line); border-radius: var(--r-l); background: #fff; text-align: center; box-shadow: var(--shadow-s); }
.stats__num { font-size: 34px; font-weight: 800; line-height: 1.1; color: var(--c-main); }
.stats__num em { font-style: normal; font-size: 18px; color: var(--c-accent); }
.stats__lab { display: block; margin-top: 8px; font-size: 13.5px; color: var(--c-mut); }

/* ---------- 20.15 空状态（仅当列表无结果时显示） ---------- */
.empty { display: none; padding: 70px 24px; border: 1px dashed var(--c-line); border-radius: var(--r-l); background: var(--c-bg); text-align: center; color: var(--c-mut); }
.nlist:not(:has(.nlist__item)) ~ .empty { display: block; }
.empty i { display: block; margin-bottom: 14px; font-size: 40px; color: #c2d2e2; }
.empty p { font-size: 15px; }

/* ---------- 20.16 搜索页 ---------- */
.srch { max-width: 780px; margin: 0 auto 44px; }
.srch__form { display: flex; gap: 12px; }
.srch__form input {
  flex: 1; min-width: 0; height: 56px; padding: 0 24px; border: 1px solid var(--c-line);
  border-radius: 999px; background: #fff; font-size: 15px; color: var(--c-ink); outline: none;
  transition: border-color .3s var(--ease), box-shadow .3s var(--ease);
}
.srch__form input::placeholder { color: #a8b8c7; }
.srch__form input:focus { border-color: var(--c-main); box-shadow: 0 0 0 4px rgba(28, 78, 154, .1); }
.srch__form button {
  flex: none; height: 56px; padding: 0 36px; border-radius: 999px; font-size: 15px; font-weight: 600; color: #fff;
  background: linear-gradient(120deg, var(--c-main), var(--c-main-l)); box-shadow: 0 12px 26px rgba(28, 78, 154, .26);
  transition: all .35s var(--ease);
}
.srch__form button:hover { background: linear-gradient(120deg, var(--c-accent), var(--c-accent-d)); box-shadow: 0 16px 32px rgba(239, 132, 26, .3); }
.srch__tip { margin-top: 16px; text-align: center; font-size: 13.5px; color: var(--c-mut); }
.srch__tip b { color: var(--c-main); }

/* ---------- 20.17 内页响应式 ---------- */
@media (max-width: 1400px) {
  .pagehero { max-height: none; }
}

@media (max-width: 1200px) {
  .inner { grid-template-columns: 240px minmax(0, 1fr); gap: 32px; }
  .pgrid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .gal { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 1024px) {
  .pagehero { aspect-ratio: auto; height: 300px; min-height: 0; max-height: none; }
  .pagehero__title { font-size: 36px; }
  .inner { display: block; padding-top: 46px; padding-bottom: 72px; }
  .side {
    position: static; margin: 0 0 36px; padding: 0;
    max-height: none; overflow: visible; grid-template-columns: minmax(0, 1fr);
  }
  .side__list { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 4px; }
  .side__item + .side__item { border-top: 0; }
  .nlist__link { grid-template-columns: 200px minmax(0, 1fr) 42px; gap: 20px; }
  .art__tt { font-size: 25px; }
  .art__ft { gap: 10px; margin-top: 36px; padding-top: 24px; }
  .art__pn-i { gap: 8px; padding: 0 14px; font-size: 13.5px; }
  .art__pn-i em { font-size: 11px; letter-spacing: .04em; }
  .art__pn-i--mid em { font-size: 13.5px; }
  .itbl { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .abox { grid-template-columns: minmax(0, 1fr); gap: 30px; }
  .abox__frame::before { left: -8px; top: -8px; width: 76px; height: 76px; }
}

@media (max-width: 767px) {
  .pagehero { height: 232px; }
  .pagehero--sm { height: 200px; }
  .pagehero__en { font-size: 11px; letter-spacing: .26em; gap: 10px; }
  .pagehero__en::before { width: 24px; }
  .pagehero__title { margin-top: 12px; font-size: 25px; }
  .pagehero__sub { margin-top: 10px; font-size: 13px; }
  .crumb__in { min-height: 46px; font-size: 12.5px; gap: 6px; }

  .inner { padding-top: 34px; padding-bottom: 92px; }
  .panel__hd { margin-bottom: 24px; padding-bottom: 18px; }
  .panel__title { font-size: 22px; }

  .nlist { gap: 14px; }
  .nlist__link { grid-template-columns: minmax(0, 1fr); gap: 14px; padding: 14px; }
  .nlist__pic { aspect-ratio: 16 / 9; }
  .nlist__tt { font-size: 16px; }
  .nlist__go { display: none; }

  .pag { margin-top: 30px; gap: 6px; }
  .pag .page-status { height: 38px; padding: 0 14px; margin-right: 0; flex: 1 0 100%; justify-content: center; font-size: 12.5px; }
  .pag a, .pag span.page-num { min-width: 38px; height: 38px; padding: 0 12px; font-size: 13px; }

  .pgrid { gap: 16px; }
  /* ⚠️ 工程案例（gongchenglist）：桌面 3 列 × 3 行 = 9 个；手机 2 列时 9 个会剩 1 个孤项，
     故手机端只保留前 8 个凑满 4 行。用 nth-child 隐藏第 9 项（不影响分页计数） */
  .pgrid--m8 > *:nth-child(n + 9) { display: none; }
  .pcard__bd { padding: 16px 18px 20px; }
  .pcard__tt { font-size: 15.5px; }
  .gal { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
  .gal__pic img { padding: 12px; }
  .gal__tt { padding: 10px 12px; font-size: 12.5px; }

  .pics { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
  .itbl { grid-template-columns: minmax(0, 1fr); }
  .itbl > div { padding: 14px 16px; }

  .art__tt { font-size: 21px; }
  .art__meta { gap: 8px 18px; font-size: 12.5px; }
  .art__body { padding-top: 24px; }
  .art__ft { grid-template-columns: minmax(0, 1fr); gap: 10px; margin-top: 30px; padding-top: 22px; }
  .art__pn-i { min-height: 54px; padding: 0 16px; font-size: 13.5px; }
  .art__pn-i--next { justify-content: flex-start; }
  .art__pn-i--next > span { order: 2; }
  .art__pn-i--next em { order: 1; }

  .cbox { grid-template-columns: minmax(0, 1fr); gap: 12px; }
  .cbox__item { padding: 18px; gap: 14px; }
  .cbox__ico { width: 44px; height: 44px; font-size: 17px; border-radius: 12px; }
  .cbox__val { font-size: 15px; }
  .cmap { height: 280px; }
  .cmap__pin { width: 52px; height: 52px; font-size: 20px; }
  .cmap__addr { font-size: 14.5px; }

  .stats { gap: 12px; }
  .stats__item { padding: 20px 14px; }
  .stats__num { font-size: 26px; }
  .stats__lab { font-size: 12.5px; }

  .srch__form { flex-direction: column; }
  .srch__form button { width: 100%; padding: 0; height: 50px; }
  .srch__form input { height: 50px; }

  .tabs { gap: 9px; margin-bottom: 24px; }
  .tabs a { height: 38px; padding: 0 18px; font-size: 13.5px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  [data-reveal] { opacity: 1 !important; transform: none !important; }
  .hero__img { transform: none !important; }
}