/* ==========================================================================
   赛可喜 SECSY — 版式复刻自 bautech.eu
   ========================================================================== */

:root {
  --ink: #12151a;
  --ink-2: #2c3238;
  --muted: #6d7681;
  --line: #e4e7eb;
  --line-2: #d7dbe0;
  --paper: #f4f5f7;
  --paper-2: #ebedf0;
  --white: #ffffff;
  --brand: #5f2d91;
  --brand-2: #7b3fb5;
  --brand-dk: #3f1c66;
  --red: #c8102e;
  --dark: #1b1e24;
  --dark-2: #24282f;
  --header-h: 76px;
  --shell: 1320px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

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

html { scroll-behavior: smooth; }

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

img { max-width: 100%; display: block; }
a { color: var(--brand); text-decoration: none; transition: color .2s var(--ease); }
a:hover { color: var(--brand-dk); }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; }
input, textarea, select { font-family: inherit; font-size: 14px; }

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

.kicker {
  display: inline-block;
  font-size: 12px;
  letter-spacing: .28em;
  text-transform: uppercase;
  color: var(--brand);
  font-weight: 700;
  margin-bottom: 14px;
}
.kicker::before {
  content: "";
  display: inline-block;
  width: 26px; height: 2px;
  background: var(--brand);
  vertical-align: middle;
  margin-right: 10px;
}

.sec-title {
  font-size: clamp(24px, 2.4vw, 34px);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: .01em;
}

.sec-sub { color: var(--muted); margin-top: 14px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 30px;
  border: 2px solid var(--ink);
  background: var(--ink);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  white-space: nowrap;
  transition: all .25s var(--ease);
}
.btn:hover { background: var(--brand); border-color: var(--brand); color: #fff; }
.btn.ghost { background: transparent; color: var(--ink); }
.btn.ghost:hover { background: var(--brand); border-color: var(--brand); color: #fff; }
.btn.light { border-color: #fff; background: transparent; color: #fff; }
.btn.light:hover { background: #fff; color: var(--ink); }

.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ==========================================================================
   HEADER + MEGA MENU
   ========================================================================== */

.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  transition: background .3s var(--ease), box-shadow .3s var(--ease);
}
.site-header .nav {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
  padding: 0 44px;
  color: #fff;
  border-bottom: 1px solid rgba(255, 255, 255, .16);
  transition: border-color .3s var(--ease), color .3s var(--ease);
}
.site-header.solid { background: var(--white); box-shadow: 0 2px 18px rgba(15, 18, 24, .07); }
.site-header.solid .nav { color: var(--ink); border-bottom-color: var(--line); }
.site-header.solid .nav-cta .btn { background: var(--brand); border-color: var(--brand); }

.brand { display: flex; align-items: center; gap: 12px; color: inherit; }
.brand img { height: 42px; width: auto; }
.brand.on-dark img.light-only { display: block; }
.brand .brand-name { font-size: 19px; font-weight: 800; letter-spacing: .12em; }

.nav-list { display: flex; align-items: center; gap: 4px; }
.nav-item { position: static; }
.nav-item > a.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 26px 18px;
  color: inherit;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .1em;
  position: relative;
  white-space: nowrap;
}
.nav-item > a.nav-link::after {
  content: "";
  position: absolute;
  left: 18px; right: 18px; bottom: 18px;
  height: 2px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .28s var(--ease);
}
.nav-item:hover > a.nav-link::after,
.nav-item.active > a.nav-link::after { transform: scaleX(1); }
.nav-item > a.nav-link .caret { font-size: 9px; opacity: .65; }

/* utility icons */
.nav-utils { display: flex; align-items: center; gap: 2px; }
.util { position: static; }
.util > a.nav-link { padding: 26px 13px; }
.util > a.nav-link svg { width: 17px; height: 17px; display: block; }
.nav-cta { margin-left: 12px; }

/* mega dropdown */
.mega {
  position: absolute;
  left: 0; right: 0; top: 100%;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: opacity .28s var(--ease), transform .28s var(--ease), visibility .28s;
  pointer-events: none;
}
.nav-item:hover > .mega,
.util:hover > .mega,
.nav-item.open > .mega {
  opacity: 1;
  visibility: visible;
  transform: none;
  pointer-events: auto;
}
.mega-inner {
  display: grid;
  grid-template-columns: 1.1fr 1fr 1fr 1fr;
  gap: 48px;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 54px 40px 58px;
}
.mega.v-brand { background: var(--brand-dk); color: #fff; }
.mega.v-brand .mega-head h1 { color: #fff; }
.mega.v-red { background: var(--red); color: #fff; }
.mega.v-red .mega-head h1 { color: #fff; }
.mega.v-dark { background: var(--dark); color: #fff; }
.mega.v-dark .mega-head h1 { color: #fff; }
.mega.v-light { background: var(--paper-2); color: var(--ink); }
.mega.v-light .mega-head h1 { color: var(--ink); }

.mega-head h1 {
  font-size: 30px;
  font-weight: 800;
  letter-spacing: .06em;
  line-height: 1.2;
}
.mega-head h2 {
  font-size: 17px;
  font-weight: 400;
  letter-spacing: .26em;
  text-transform: uppercase;
  opacity: .72;
  margin-top: 4px;
}
.mega.v-light .mega-head h2 { color: var(--muted); }

.mega-col h3 {
  font-size: 12px;
  letter-spacing: .22em;
  text-transform: uppercase;
  font-weight: 700;
  opacity: .6;
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid currentColor;
}
.mega-col li { margin-bottom: 3px; }
.mega-col a {
  display: block;
  padding: 7px 0 7px 16px;
  color: inherit;
  font-size: 14px;
  position: relative;
  opacity: .92;
}
.mega-col a::before {
  content: "";
  position: absolute;
  left: 0; top: 50%;
  width: 6px; height: 1px;
  background: currentColor;
  opacity: .5;
  transition: width .25s var(--ease), opacity .25s var(--ease);
}
.mega-col a:hover { opacity: 1; padding-left: 24px; }
.mega-col a:hover::before { width: 14px; opacity: 1; }

/* search dropdown */
.util .mega { left: auto; right: 0; width: 380px; }
.search-box { padding: 26px; }
.search-row { display: flex; border: 2px solid currentColor; }
.search-row input {
  flex: 1;
  border: 0;
  background: transparent;
  padding: 12px 16px;
  color: inherit;
  outline: none;
}
.search-row button {
  border: 0;
  background: var(--brand);
  color: #fff;
  padding: 0 18px;
}
.search-row button svg { width: 16px; height: 16px; }
.share-links { padding: 20px 26px 26px; }
.share-links a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 9px 0;
  color: inherit;
  font-size: 14px;
  opacity: .88;
}
.share-links a:hover { opacity: 1; padding-left: 6px; }

.burger { display: none; }

/* ==========================================================================
   HERO  (bautech 首页左右分屏)
   ========================================================================== */

.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 100vh;
  position: relative;
}
.hero-panel {
  position: relative;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  overflow: hidden;
  color: #fff;
  min-height: 420px;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transform: scale(1.02);
  transition: transform 1.4s var(--ease);
}
.hero-panel:hover .hero-bg { transform: scale(1.09); }
.hero-veil {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10, 12, 16, .82) 0%, rgba(10, 12, 16, .38) 45%, rgba(10, 12, 16, .28) 100%);
  transition: background .4s var(--ease);
}
.hero-panel.v-brand .hero-veil { background: linear-gradient(to top, rgba(63, 28, 102, .9) 0%, rgba(63, 28, 102, .42) 48%, rgba(20, 14, 30, .3) 100%); }
.hero-panel.v-red .hero-veil { background: linear-gradient(to top, rgba(140, 8, 30, .88) 0%, rgba(140, 8, 30, .4) 48%, rgba(16, 10, 12, .3) 100%); }
.hero-panel:hover .hero-veil { opacity: .92; }

.hero-inner {
  position: relative;
  text-align: center;
  padding: 150px 42px 92px;
  max-width: 640px;
}
.hero-inner .hero-logo {
  height: 52px;
  margin: 0 auto 26px;
  filter: brightness(0) invert(1);
  opacity: .92;
}
.hero-inner h1 {
  font-size: clamp(30px, 3.6vw, 54px);
  font-weight: 800;
  letter-spacing: .08em;
  line-height: 1.16;
  text-shadow: 0 4px 26px rgba(0, 0, 0, .35);
}
.hero-inner p {
  margin-top: 16px;
  font-size: 14px;
  letter-spacing: .16em;
  opacity: .82;
}
.hero-inner .more {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-top: 34px;
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .34em;
  text-transform: uppercase;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255, 255, 255, .55);
}
.hero-inner .more svg { width: 15px; height: 15px; transition: transform .3s var(--ease); }
.hero-inner .more:hover svg { transform: translateX(6px); }

.hero-divider {
  position: absolute;
  left: 50%; top: 0; bottom: 0;
  width: 1px;
  background: rgba(255, 255, 255, .22);
  z-index: 2;
  pointer-events: none;
}
.scroll-hint {
  position: absolute;
  left: 50%;
  bottom: 26px;
  transform: translateX(-50%);
  z-index: 3;
  color: #fff;
  opacity: .7;
  animation: bob 2.2s infinite var(--ease);
}
.scroll-hint svg { width: 22px; height: 22px; }
@keyframes bob { 0%, 100% { transform: translate(-50%, 0); } 50% { transform: translate(-50%, 9px); } }

/* ==========================================================================
   系统轮播
   ========================================================================== */

.systems { background: var(--paper); padding: 100px 0 92px; }
.systems-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 30px; margin-bottom: 46px; }
.systems-head p { color: var(--muted); margin-top: 12px; }
.rail-nav { display: flex; gap: 10px; flex: 0 0 auto; }
.rail-btn {
  width: 48px; height: 48px;
  border: 1px solid var(--line-2);
  background: #fff;
  display: grid;
  place-items: center;
  color: var(--ink);
  transition: all .25s var(--ease);
}
.rail-btn:hover { background: var(--brand); border-color: var(--brand); color: #fff; }
.rail-btn svg { width: 18px; height: 18px; }

.rail {
  display: flex;
  gap: 26px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 6px 4px 26px;
  scrollbar-width: thin;
  scrollbar-color: var(--line-2) transparent;
}
.rail::-webkit-scrollbar { height: 4px; }
.rail::-webkit-scrollbar-thumb { background: var(--line-2); }
.sys-card {
  flex: 0 0 clamp(238px, 24vw, 320px);
  scroll-snap-align: start;
  background: #fff;
  border: 1px solid var(--line);
  display: block;
  color: var(--ink);
  transition: transform .35s var(--ease), box-shadow .35s var(--ease);
}
.sys-card:hover { transform: translateY(-8px); box-shadow: 0 18px 42px rgba(15, 18, 24, .12); color: var(--ink); }
.sys-cap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 18px 20px;
  font-weight: 700;
  font-size: 15px;
}
.sys-cap svg { width: 16px; height: 16px; opacity: .35; transition: transform .3s var(--ease), opacity .3s; }
.sys-card:hover .sys-cap svg { opacity: 1; transform: translateX(4px); color: var(--brand); }
.sys-thumb { height: 208px; overflow: hidden; }
.sys-thumb span { display: block; width: 100%; height: 100%; background-size: cover; background-position: center; transition: transform .8s var(--ease); }
.sys-card:hover .sys-thumb span { transform: scale(1.07); }

/* ==========================================================================
   品牌介绍
   ========================================================================== */

.intro { padding: 108px 0; text-align: center; }
.intro .lead {
  font-size: clamp(19px, 2vw, 27px);
  line-height: 1.62;
  font-weight: 600;
  max-width: 940px;
  margin: 26px auto 0;
}
.intro .body {
  max-width: 880px;
  margin: 26px auto 0;
  color: var(--muted);
  font-size: 15.5px;
}
.intro .btn { margin-top: 40px; }

/* ==========================================================================
   应用板块（图集 + 文案）
   ========================================================================== */

.collect { padding: 40px 0 96px; }
.collect-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.65fr) minmax(0, 1fr);
  gap: 64px;
  align-items: center;
}
.collect.text-first .collect-grid > .mosaic-wrap { order: 2; }
.collect.text-first .collect-grid > .collect-copy { order: 1; }

.mosaic { display: grid; grid-template-columns: repeat(12, 1fr); gap: 14px; }
.tile {
  position: relative;
  height: 176px;
  overflow: hidden;
  display: block;
}
.tile .ph {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transition: transform .9s var(--ease);
}
.tile:hover .ph { transform: scale(1.08); }
.tile .cap {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 40px 16px 14px;
  background: linear-gradient(to top, rgba(10, 12, 16, .82), transparent);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .08em;
  opacity: 0;
  transform: translateY(10px);
  transition: all .35s var(--ease);
}
.tile:hover .cap { opacity: 1; transform: none; }

.collect-copy .sec-title { margin-bottom: 20px; }
.collect-copy p { color: var(--muted); margin-bottom: 28px; }

/* ==========================================================================
   CTA（信任尊重可持续发展）
   ========================================================================== */

.cta { background: var(--paper); padding: 100px 0; }
.cta-grid {
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(0, 1.25fr);
  gap: 70px;
  align-items: center;
}
.cta-img { position: relative; }
.cta-img img { width: 100%; height: 400px; object-fit: cover; }
.cta-img::after {
  content: "";
  position: absolute;
  right: -22px; bottom: -22px;
  width: 62%; height: 62%;
  border: 2px solid var(--brand);
  z-index: -1;
}
.cta-copy p { color: var(--muted); margin-top: 18px; white-space: pre-line; }
.cta-copy .btn { margin-top: 34px; }

/* ==========================================================================
   内页 banner
   ========================================================================== */

.page { padding-top: var(--header-h); }
.banner {
  position: relative;
  min-height: 350px;
  display: flex;
  align-items: flex-end;
  color: #fff;
  overflow: hidden;
}
.banner .bg { position: absolute; inset: 0; background-size: cover; background-position: center; }
.banner .veil { position: absolute; inset: 0; background: linear-gradient(to top, rgba(10, 12, 16, .84), rgba(10, 12, 16, .3)); }
.banner-inner { position: relative; padding: 0 0 52px; }
.banner-inner .kicker { color: #fff; }
.banner-inner .kicker::before { background: #fff; }
.banner-inner h1 { font-size: clamp(26px, 3vw, 44px); font-weight: 800; letter-spacing: .04em; line-height: 1.22; }

.section { padding: 92px 0; }
.section.tight { padding: 64px 0; }
.section.paper { background: var(--paper); }
.section.dark { background: var(--dark); color: #fff; }
.section.dark .sec-sub { color: rgba(255, 255, 255, .66); }
.section-head { margin-bottom: 48px; }
.section-head.center { text-align: center; }
.section-head.center .kicker::before { display: none; }
.section-head p { max-width: 780px; }
.section-head.center p { margin-left: auto; margin-right: auto; }

/* ==========================================================================
   关于我们
   ========================================================================== */

.mission-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
.mission-card {
  background: #fff;
  border: 1px solid var(--line);
  padding: 44px 40px;
  position: relative;
  overflow: hidden;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease);
}
.mission-card:hover { transform: translateY(-6px); box-shadow: 0 20px 44px rgba(15, 18, 24, .1); }
.mission-card::before {
  content: "";
  position: absolute;
  left: 0; top: 0;
  width: 4px; height: 100%;
  background: var(--brand);
}
.mission-card h3 { font-size: 22px; margin-bottom: 12px; }
.mission-card p { color: var(--muted); }

.about-split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr); gap: 64px; align-items: center; }
.about-split .pic { position: relative; }
.about-split .pic img { width: 100%; height: 430px; object-fit: cover; }
.about-split .pic::before {
  content: "";
  position: absolute;
  left: -22px; top: -22px;
  width: 54%; height: 54%;
  border: 2px solid var(--brand);
}
.about-split p { color: var(--muted); margin-top: 16px; }

.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); margin-top: 46px; }
.stat { background: #fff; padding: 30px 26px; text-align: center; }
.stat .num { font-size: 38px; font-weight: 800; color: var(--brand); line-height: 1; }
.stat .num small { font-size: 14px; font-weight: 600; margin-left: 5px; color: var(--muted); }
.stat .lab { margin-top: 10px; font-size: 13px; color: var(--muted); letter-spacing: .06em; }

.tag-wall { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.tag {
  padding: 10px 22px;
  border: 1px solid var(--line-2);
  background: #fff;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .1em;
  color: var(--ink-2);
  transition: all .25s var(--ease);
}
.tag:hover { background: var(--brand); border-color: var(--brand); color: #fff; }

/* ==========================================================================
   产品
   ========================================================================== */

.cat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.cat-card {
  background: #fff;
  border: 1px solid var(--line);
  display: block;
  color: var(--ink);
  transition: transform .35s var(--ease), box-shadow .35s var(--ease);
}
.cat-card:hover { transform: translateY(-8px); box-shadow: 0 20px 46px rgba(15, 18, 24, .11); color: var(--ink); }
.cat-thumb { height: 196px; overflow: hidden; }
.cat-thumb span { display: block; width: 100%; height: 100%; background-size: cover; background-position: center; transition: transform .8s var(--ease); }
.cat-card:hover .cat-thumb span { transform: scale(1.07); }
.cat-body { padding: 22px 24px 26px; }
.cat-body h3 { font-size: 18px; margin-bottom: 8px; display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.cat-body h3 svg { width: 16px; height: 16px; opacity: .3; flex: 0 0 auto; transition: transform .3s var(--ease), opacity .3s; }
.cat-card:hover .cat-body h3 svg { opacity: 1; transform: translateX(4px); color: var(--brand); }
.cat-body p { color: var(--muted); font-size: 14px; }

.prod-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.prod-card {
  background: #fff;
  border: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease);
}
.prod-card:hover { transform: translateY(-7px); box-shadow: 0 20px 44px rgba(15, 18, 24, .11); }
.prod-img { height: 220px; overflow: hidden; display: grid; place-items: center; background: #fff; border-bottom: 1px solid var(--line); }
.prod-img img { width: 100%; height: 100%; object-fit: contain; padding: 18px; transition: transform .7s var(--ease); }
.prod-card:hover .prod-img img { transform: scale(1.06); }
.prod-body { padding: 20px 22px 22px; display: flex; flex-direction: column; gap: 7px; flex: 1; }
.prod-model { font-size: 11px; letter-spacing: .18em; text-transform: uppercase; color: var(--brand); font-weight: 700; }
.prod-name { font-size: 16.5px; font-weight: 700; }
.prod-spec { font-size: 13px; color: var(--muted); }
.prod-meta { display: flex; align-items: center; justify-content: space-between; margin-top: auto; padding-top: 14px; }
.prod-price { font-weight: 800; color: var(--red); font-size: 15px; }
.prod-status { font-size: 11.5px; padding: 4px 11px; letter-spacing: .08em; }
.prod-status.ok { background: #e8f6ee; color: #1c7c4a; }
.prod-status.no { background: #f4f5f7; color: var(--muted); }

/* case rows */
.case-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
.case-card { position: relative; height: 300px; overflow: hidden; display: block; }
.case-card .bg { position: absolute; inset: 0; background-size: cover; background-position: center; transition: transform 1s var(--ease); }
.case-card:hover .bg { transform: scale(1.07); }
.case-card .veil { position: absolute; inset: 0; background: linear-gradient(to top, rgba(10, 12, 16, .86), rgba(10, 12, 16, .12)); }
.case-card .txt { position: absolute; left: 0; right: 0; bottom: 0; padding: 30px; color: #fff; }
.case-card .txt h3 { font-size: 22px; margin-bottom: 8px; }
.case-card .txt p { font-size: 14px; opacity: .84; max-width: 520px; }

/* equipment grid */
.equip-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.equip { position: relative; height: 230px; overflow: hidden; }
.equip .bg { position: absolute; inset: 0; background-size: cover; background-position: center; transition: transform .9s var(--ease); }
.equip:hover .bg { transform: scale(1.08); }
.equip .veil { position: absolute; inset: 0; background: linear-gradient(to top, rgba(10, 12, 16, .78), transparent 62%); }
.equip .txt { position: absolute; left: 0; right: 0; bottom: 0; padding: 18px 20px; color: #fff; font-weight: 700; letter-spacing: .06em; }

/* ==========================================================================
   联系我们
   ========================================================================== */

.contact-split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 70px; align-items: start; }
.contact-split h2 { font-size: clamp(24px, 2.4vw, 34px); margin-bottom: 16px; }
.contact-split .sub { color: var(--muted); }
.contact-cards { margin-top: 40px; display: grid; gap: 14px; }
.ccard {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 20px 24px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  transition: all .28s var(--ease);
}
.ccard:hover { border-color: var(--brand); box-shadow: 0 14px 32px rgba(15, 18, 24, .08); color: var(--ink); }
.ccard .ico {
  width: 46px; height: 46px;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  background: rgba(95, 45, 145, .09);
  color: var(--brand);
}
.ccard .ico svg { width: 20px; height: 20px; }
.ccard .lab { font-size: 12px; letter-spacing: .16em; text-transform: uppercase; color: var(--muted); }
.ccard .val { font-weight: 700; font-size: 15.5px; }

.form-card { background: #fff; border: 1px solid var(--line); padding: 40px; box-shadow: 0 20px 50px rgba(15, 18, 24, .06); }
.form-card h3 { font-size: 20px; margin-bottom: 8px; }
.form-card .note { color: var(--muted); font-size: 14px; margin-bottom: 26px; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 12.5px; font-weight: 700; letter-spacing: .1em; margin-bottom: 7px; color: var(--ink-2); }
.field input, .field textarea, .field select {
  width: 100%;
  padding: 13px 15px;
  border: 1px solid var(--line-2);
  background: var(--paper);
  outline: none;
  transition: border-color .2s, background .2s;
}
.field input:focus, .field textarea:focus { border-color: var(--brand); background: #fff; }
.field textarea { min-height: 130px; resize: vertical; }
.form-msg { margin-top: 14px; font-size: 14px; font-weight: 600; display: none; }
.form-msg.show { display: block; }
.form-msg.ok { color: #1c7c4a; }
.form-msg.err { color: var(--red); }

.faq { max-width: 900px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item button {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  background: none;
  border: 0;
  padding: 22px 4px;
  text-align: left;
  font-size: 16.5px;
  font-weight: 600;
  color: var(--ink);
}
.faq-item button svg { width: 17px; height: 17px; flex: 0 0 auto; transition: transform .3s var(--ease); color: var(--brand); }
.faq-item.open button svg { transform: rotate(45deg); }
.faq-item .ans { display: none; padding: 0 4px 24px; color: var(--muted); }
.faq-item.open .ans { display: block; }

.map-embed { width: 100%; border: 0; height: 420px; display: block; filter: grayscale(.25); }

/* ==========================================================================
   FOOTER
   ========================================================================== */

.site-footer { background: var(--dark); color: rgba(255, 255, 255, .78); }
.foot-main {
  display: grid;
  grid-template-columns: .9fr 1.6fr .9fr;
  gap: 60px;
  padding: 74px 0 60px;
}
.foot-logo img { height: 46px; filter: brightness(0) invert(1); opacity: .92; }
.foot-logo .foot-tag { margin-top: 18px; font-size: 13.5px; line-height: 1.9; opacity: .7; }
.foot-mid h3 { color: #fff; font-size: 22px; margin-bottom: 26px; font-weight: 700; }
.foot-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 28px; }
.foot-actions a {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 12px 22px;
  border: 1px solid rgba(255, 255, 255, .28);
  color: #fff;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .16em;
  transition: all .25s var(--ease);
}
.foot-actions a:hover { background: #fff; color: var(--dark); border-color: #fff; }
.foot-actions svg { width: 16px; height: 16px; }
.mini-form { display: flex; gap: 10px; max-width: 440px; }
.mini-form input {
  flex: 1;
  padding: 12px 16px;
  background: rgba(255, 255, 255, .07);
  border: 1px solid rgba(255, 255, 255, .2);
  color: #fff;
  outline: none;
}
.mini-form input::placeholder { color: rgba(255, 255, 255, .45); }
.mini-form input:focus { border-color: rgba(255, 255, 255, .6); }
.mini-form button {
  padding: 12px 26px;
  background: var(--brand-2);
  border: 1px solid var(--brand-2);
  color: #fff;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .16em;
  transition: background .25s var(--ease);
}
.mini-form button:hover { background: var(--brand); border-color: var(--brand); }
.foot-note { font-size: 12.5px; opacity: .55; margin-top: 14px; }

.foot-right { display: flex; flex-direction: column; align-items: flex-start; gap: 20px; }
.foot-right .partner { display: inline-flex; align-items: center; gap: 14px; color: #fff; opacity: .88; }
.foot-right .partner:hover { opacity: 1; }
.foot-right .partner img { height: 34px; filter: brightness(0) invert(1); }
.foot-right .partner span { font-size: 12.5px; letter-spacing: .14em; }
.socials { display: flex; gap: 10px; }
.socials a {
  width: 42px; height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, .24);
  color: #fff;
  transition: all .25s var(--ease);
}
.socials a:hover { background: var(--brand-2); border-color: var(--brand-2); }
.socials svg { width: 17px; height: 17px; }

.foot-bar { border-top: 1px solid rgba(255, 255, 255, .12); padding: 22px 0; }
.foot-bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 12.5px;
  opacity: .6;
}
.foot-bar a { color: inherit; }
.foot-bar a:hover { color: #fff; }
.foot-admin { display: inline-flex; align-items: center; gap: 7px; }

.go-top {
  position: fixed;
  right: 26px; bottom: 26px;
  z-index: 150;
  width: 48px; height: 48px;
  display: grid;
  place-items: center;
  background: var(--brand);
  color: #fff;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all .3s var(--ease);
}
.go-top.show { opacity: 1; visibility: visible; transform: none; }
.go-top:hover { background: var(--brand-dk); }
.go-top svg { width: 18px; height: 18px; }

/* ==========================================================================
   响应式
   ========================================================================== */

/* 打印/长图预览模式 ?flat=1 */
body.flat .hero { min-height: 620px; }
body.flat .reveal { opacity: 1; transform: none; }

@media (max-width: 1180px) {
  .shell { padding: 0 28px; }
  .site-header .nav { padding: 0 28px; }
  .nav-list { gap: 0; }
  .nav-item > a.nav-link { padding: 26px 12px; font-size: 13px; }
  .prod-grid { grid-template-columns: repeat(3, 1fr); }
  .equip-grid { grid-template-columns: repeat(2, 1fr); }
  .cat-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 980px) {
  .nav-list {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    max-height: 0;
    overflow: hidden;
    background: #fff;
    color: var(--ink);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    box-shadow: 0 20px 40px rgba(15, 18, 24, .12);
    transition: max-height .4s var(--ease);
    z-index: 90;
  }
  .nav-list.open { max-height: 78vh; overflow-y: auto; }
  .nav-item > a.nav-link { width: 100%; padding: 17px 28px; border-bottom: 1px solid var(--line); }
  .nav-item > a.nav-link::after { display: none; }
  .mega { position: static; opacity: 1; visibility: visible; transform: none; pointer-events: auto; max-height: 0; overflow: hidden; transition: max-height .4s var(--ease); }
  .mega-inner { grid-template-columns: 1fr; gap: 26px; padding: 22px 28px 28px; }
  .mega.v-light { background: var(--paper); }
  .mega-head h2 { display: none; }
  .nav-utils { gap: 0; }
  .util > a.nav-link { padding: 26px 12px; }
  .util .mega { position: fixed; width: auto; left: 0; right: 0; top: var(--header-h); background: #fff; color: var(--ink); }
  .util:hover .mega, .util.open .mega { max-height: 400px; }
  .burger { display: grid; place-items: center; width: 42px; height: 42px; background: none; border: 1px solid rgba(255, 255, 255, .3); color: inherit; }
  .burger svg { width: 20px; height: 20px; }
  .nav-cta { display: none; }

  .hero { grid-template-columns: 1fr; }
  .hero-divider, .scroll-hint { display: none; }
  .hero-inner { padding: 120px 30px 70px; }

  .collect-grid, .about-split, .cta-grid, .contact-split { grid-template-columns: 1fr; gap: 40px; }
  .collect.text-first .collect-grid > .mosaic-wrap { order: 1; }
  .collect.text-first .collect-grid > .collect-copy { order: 2; }
  .mission-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .foot-main { grid-template-columns: 1fr; gap: 40px; padding: 60px 0 46px; }
  .section { padding: 68px 0; }
}

@media (max-width: 720px) {
  :root { --header-h: 66px; }
  .shell { padding: 0 20px; }
  .site-header .nav { padding: 0 20px; }
  .brand img { height: 34px; }
  .prod-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .cat-grid { grid-template-columns: 1fr; }
  .case-grid { grid-template-columns: 1fr; }
  .equip-grid { grid-template-columns: 1fr; }
  .tile { height: 130px; }
  .tile[style*="span 7"], .tile[style*="span 6"], .tile[style*="span 5"], .tile[style*="span 4"], .tile[style*="span 3"] { grid-column: span 6 !important; }
  .form-card { padding: 26px 20px; }
  .banner { min-height: 260px; }
  .intro { padding: 70px 0; }
  .cta-img img { height: 260px; }
  .about-split .pic img { height: 280px; }
  .foot-bar-inner { justify-content: center; text-align: center; }
}