@charset "UTF-8";
/* ==========================================================================
   上海德惠特种风机有限公司 · www.dehuifan.com
   设计系统：工程图纸风（石墨深色骨架 + 品牌蓝 + 直角硬边 + 发丝线）
   与既有企业站模板不同源，组件、骨架、排版全部另起。
   ========================================================================== */
@import url("fonts.css");

/* --------------------------------------------------------------------------
   1. 令牌
   -------------------------------------------------------------------------- */
:root {
  /* 品牌 · 取自德惠商标 */
  --blue: #018bd6;
  --blue-deep: #0a6099;      /* 白底上的文字级蓝 */
  --blue-dark: #075382;
  --signal: #f26b21;         /* 信号橙，取自风机皮带罩，只用于极少数强调 */

  /* 中性 · 石墨 */
  --ink: #0e1216;
  --ink-2: #161c22;
  --ink-3: #1e262e;
  --steel: #41505d;
  --mute: #6b7884;
  --line: #d9dee3;
  --line-soft: #e8ecef;
  --paper: #ffffff;
  --paper-2: #f3f5f7;
  --paper-3: #e9edf1;

  /* 深底上的文字 */
  --on-dark: #eef2f5;
  --on-dark-mute: #9aa8b4;
  --on-dark-line: #2a343d;

  /* 字体 */
  --sans: "Barlow", -apple-system, BlinkMacSystemFont, "PingFang SC",
    "HarmonyOS Sans SC", "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --cond: "Barlow Condensed", "Barlow", -apple-system, "PingFang SC",
    "HarmonyOS Sans SC", "Microsoft YaHei", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* 字号 */
  --fs-mega: clamp(2.5rem, 1.1rem + 5.4vw, 5rem);
  --fs-h1: clamp(1.95rem, 1.2rem + 2.8vw, 3.35rem);
  --fs-h2: clamp(1.5rem, 1.1rem + 1.6vw, 2.35rem);
  --fs-h3: clamp(1.08rem, 0.98rem + 0.42vw, 1.3rem);
  --fs-lede: clamp(0.99rem, 0.94rem + 0.28vw, 1.14rem);
  --fs-sm: 0.875rem;
  --fs-xs: 0.775rem;

  /* 间距 */
  --s1: .5rem; --s2: .75rem; --s3: 1rem; --s4: 1.5rem;
  --s5: 2rem;  --s6: 3rem;   --s7: 4.5rem;
  --sec: clamp(3.6rem, 2rem + 5.4vw, 7.2rem);

  --wrap: 1380px;
  --gut: clamp(1.15rem, 0.4rem + 3.1vw, 3.5rem);

  --ease: cubic-bezier(.22,1,.36,1);
  --dur: .48s;

  color-scheme: light;
}

/* --------------------------------------------------------------------------
   2. 基础
   -------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.78;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg, video { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; }
h1, h2, h3, h4 { margin: 0; line-height: 1.24; font-weight: 700; letter-spacing: -0.005em; }
p { margin: 0 0 1em; }
ul, ol { margin: 0; padding: 0; list-style: none; }
table { border-collapse: collapse; width: 100%; }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; }

.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: var(--gut); }
.wrap--tight { max-width: 1080px; }
.wrap--prose { max-width: 860px; }

.skip {
  position: absolute; left: -9999px; top: 0; z-index: 200;
  background: var(--blue); color: #fff; padding: .7rem 1.1rem; font-weight: 600;
}
.skip:focus { left: 0; }

.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.cond { font-family: var(--cond); }

/* 区块 */
.section { padding-block: var(--sec); }
.section--tight { padding-block: clamp(2.6rem, 1.6rem + 3.4vw, 4.6rem); }
.section--alt { background: var(--paper-2); }
.section--dark { background: var(--ink); color: var(--on-dark); position: relative; overflow: hidden; }
.section--dark h2, .section--dark h3 { color: #fff; }

/* --------------------------------------------------------------------------
   3. 气流纹理（本站签名元素）
   -------------------------------------------------------------------------- */
.flow {
  position: absolute; inset: 0; pointer-events: none;
  opacity: 1; z-index: 0;
}
.flow path { fill: none; stroke: var(--blue); stroke-width: 1; opacity: .5; }
.flow path:nth-child(2n) { stroke: #4fb3e8; opacity: .3; }
.flow path:nth-child(3n) { opacity: .2; }
.section--dark > .wrap, .hero > .wrap, .pagehead > .wrap { position: relative; z-index: 1; }

/* 网格底纹 */
.gridfill {
  position: absolute; inset: 0; pointer-events: none; z-index: 0;
  background-image:
    linear-gradient(to right, rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 74px 74px;
  mask-image: radial-gradient(120% 90% at 70% 40%, #000 30%, transparent 78%);
}

/* --------------------------------------------------------------------------
   4. 标题系统 · 编号 + 栏目名（工程图纸味）
   -------------------------------------------------------------------------- */
.head { display: grid; gap: var(--s3); margin-bottom: var(--s6); }
.head__top { display: flex; align-items: baseline; gap: var(--s3); flex-wrap: wrap; }
.head__no {
  font-family: var(--cond); font-weight: 700; font-size: 1.05rem;
  letter-spacing: .14em; color: var(--blue-deep);
  border-bottom: 2px solid var(--blue); padding-bottom: 2px;
}
.section--dark .head__no { color: #6cc3f0; border-color: var(--blue); }
.head__en {
  font-family: var(--cond); font-weight: 600; font-size: .95rem;
  letter-spacing: .2em; text-transform: uppercase; color: var(--mute);
}
.section--dark .head__en { color: var(--on-dark-mute); }
.head h2 { font-size: var(--fs-h2); }
.head__lede { max-width: 62ch; color: var(--steel); font-size: var(--fs-lede); margin: 0; }
.section--dark .head__lede { color: var(--on-dark-mute); }
.head--split { grid-template-columns: 1fr auto; align-items: end; }
.head--split .head__body { display: grid; gap: var(--s3); }
@media (max-width: 760px) { .head--split { grid-template-columns: 1fr; } }

/* --------------------------------------------------------------------------
   5. 顶栏 / 导航
   -------------------------------------------------------------------------- */
.topbar {
  background: var(--ink-2); color: var(--on-dark-mute);
  font-size: var(--fs-xs); border-bottom: 1px solid var(--on-dark-line);
}
.topbar__in { display: flex; justify-content: space-between; align-items: center; gap: var(--s4); min-height: 40px; }
.topbar__l { display: flex; gap: var(--s4); align-items: center; letter-spacing: .02em; }
.topbar__r { display: flex; gap: var(--s4); align-items: center; }
.topbar a:hover { color: #fff; }
.topbar strong { color: #fff; font-family: var(--mono); font-weight: 500; letter-spacing: .01em; }
@media (max-width: 860px) { .topbar__l span:not(:first-child) { display: none; } }

.masthead {
  position: sticky; top: 0; z-index: 90;
  background: rgba(14,18,22,.94);
  backdrop-filter: saturate(150%) blur(10px);
  border-bottom: 1px solid var(--on-dark-line);
}
.masthead__in { display: flex; align-items: center; justify-content: space-between; gap: var(--s4); min-height: 76px; }
.brand { display: flex; align-items: center; gap: .8rem; flex: none; }
.brand img { height: 42px; width: auto; }
@media (max-width: 420px) { .brand img { height: 34px; } }

.nav { display: flex; gap: clamp(.4rem, .2rem + .9vw, 1.5rem); align-items: stretch; }
.nav > li { position: relative; }
.nav > li > a {
  display: flex; flex-direction: column; justify-content: center; align-items: center;
  min-height: 76px; padding-inline: .55rem; gap: 1px;
  color: var(--on-dark); font-size: .95rem; font-weight: 500;
  position: relative; transition: color .2s;
}
.nav > li > a::after {
  content: ""; position: absolute; left: 50%; right: 50%; bottom: 0; height: 2px;
  background: var(--blue); transition: left .28s var(--ease), right .28s var(--ease);
}
.nav > li > a:hover, .nav > li > a[aria-current] { color: #fff; }
.nav > li > a:hover::after, .nav > li > a[aria-current]::after { left: .35rem; right: .35rem; }
.nav__en {
  font-family: var(--cond); font-size: .66rem; letter-spacing: .16em;
  text-transform: uppercase; color: var(--on-dark-mute); font-weight: 600;
}
.nav > li > a:hover .nav__en, .nav > li > a[aria-current] .nav__en { color: #6cc3f0; }
@media (max-width: 1100px) { .nav { display: none; } }

.masthead__cta { display: flex; align-items: center; gap: var(--s3); flex: none; }
.callnum { display: flex; flex-direction: column; line-height: 1.15; }
.callnum span { font-size: .64rem; letter-spacing: .16em; text-transform: uppercase; color: var(--on-dark-mute); font-family: var(--cond); font-weight: 600; }
.callnum strong { font-family: var(--mono); font-size: 1.02rem; color: #fff; font-weight: 500; }
@media (max-width: 1100px) { .callnum { display: none; } }

.burger {
  display: none; width: 46px; height: 46px; border: 1px solid var(--on-dark-line);
  background: transparent; cursor: pointer; align-items: center; justify-content: center; flex-direction: column; gap: 5px;
}
.burger i { display: block; width: 19px; height: 1.5px; background: #fff; transition: .3s var(--ease); }
.burger[aria-expanded="true"] i:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.burger[aria-expanded="true"] i:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] i:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }
@media (max-width: 1100px) { .burger { display: flex; } }

/* 抽屉 */
.drawer {
  position: fixed; inset: 0; z-index: 120; background: var(--ink);
  transform: translateX(100%); transition: transform .4s var(--ease);
  display: flex; flex-direction: column; overflow-y: auto;
  padding: calc(env(safe-area-inset-top, 0px) + 1.2rem) var(--gut) calc(env(safe-area-inset-bottom, 0px) + 2rem);
}
.drawer[data-open] { transform: translateX(0); }
.drawer__top { display: flex; justify-content: space-between; align-items: center; margin-bottom: var(--s5); }
.drawer__top img { height: 38px; }
.drawer__close { width: 44px; height: 44px; background: none; border: 1px solid var(--on-dark-line); color: #fff; font-size: 1.4rem; cursor: pointer; line-height: 1; }
.drawer nav a {
  display: flex; align-items: baseline; gap: .7rem; padding: 1.05rem 0;
  border-bottom: 1px solid var(--on-dark-line); color: var(--on-dark); font-size: 1.1rem; font-weight: 500;
}
.drawer nav a em { font-style: normal; font-family: var(--cond); font-size: .72rem; letter-spacing: .16em; text-transform: uppercase; color: var(--on-dark-mute); }
.drawer__foot { margin-top: var(--s5); color: var(--on-dark-mute); font-size: var(--fs-sm); display: grid; gap: .4rem; }
.drawer__foot strong { color: #fff; font-family: var(--mono); font-size: 1.2rem; font-weight: 500; }

/* --------------------------------------------------------------------------
   6. 首屏
   -------------------------------------------------------------------------- */
.hero { background: var(--ink); color: var(--on-dark); position: relative; overflow: hidden; padding-block: clamp(3rem, 1.6rem + 5.4vw, 6.5rem); }
.hero__grid { display: grid; grid-template-columns: 1.06fr .94fr; gap: clamp(1.5rem, .6rem + 3.4vw, 4rem); align-items: center; }
@media (max-width: 980px) { .hero__grid { grid-template-columns: 1fr; } }

.hero__eyebrow {
  display: inline-flex; align-items: center; gap: .6rem; margin-bottom: var(--s4);
  font-family: var(--cond); font-size: .82rem; letter-spacing: .2em; text-transform: uppercase;
  color: #6cc3f0; font-weight: 600;
}
.hero__eyebrow::before { content: ""; width: 34px; height: 1px; background: var(--blue); }
.hero h1 { font-size: var(--fs-mega); line-height: 1.08; letter-spacing: -0.02em; color: #fff; }
.hero h1 em { font-style: normal; color: var(--blue); }
.hero__sub { margin: var(--s4) 0 0; max-width: 54ch; color: var(--on-dark-mute); font-size: var(--fs-lede); }
.hero__acts { display: flex; gap: var(--s3); flex-wrap: wrap; margin-top: var(--s5); }

.hero__fan { position: relative; aspect-ratio: 1; display: grid; place-items: center; width: 100%; max-width: 600px; margin-inline: auto; }
.hero__fan img { width: 100%; mix-blend-mode: screen; filter: contrast(1.06) brightness(1.02); }
.hero__ring {
  position: absolute; inset: 4%; border: 1px solid rgba(108,195,240,.16); border-radius: 50%;
}
.hero__ring::after {
  content: ""; position: absolute; inset: 9%; border: 1px dashed rgba(108,195,240,.14); border-radius: 50%;
  animation: spin 46s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .hero__ring::after { animation: none; } }

/* --------------------------------------------------------------------------
   7. 按钮
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; gap: .6rem; padding: .92rem 1.7rem;
  font-weight: 600; font-size: .96rem; border: 1px solid transparent; cursor: pointer;
  transition: background .22s, color .22s, border-color .22s, transform .22s var(--ease);
  position: relative;
}
.btn:active { transform: translateY(1px); }
.btn svg { width: 15px; height: 15px; flex: none; }
.btn--primary { background: var(--blue); color: #fff; }
.btn--primary:hover { background: #0aa0f0; }
.btn--ghost { border-color: rgba(255,255,255,.26); color: #fff; }
.btn--ghost:hover { border-color: var(--blue); background: rgba(1,139,214,.12); }
.btn--line { border-color: var(--line); color: var(--ink); background: var(--paper); }
.btn--line:hover { border-color: var(--blue-deep); color: var(--blue-deep); }
.btn--signal { background: var(--signal); color: #fff; }
.btn--signal:hover { background: #ff7d33; }

.more {
  display: inline-flex; align-items: center; gap: .5rem;
  font-family: var(--cond); font-weight: 600; font-size: .95rem; letter-spacing: .1em; text-transform: uppercase;
  color: var(--blue-deep); border-bottom: 1px solid currentColor; padding-bottom: 2px;
}
.section--dark .more { color: #6cc3f0; }
.more:hover { color: var(--signal); }
.more svg { width: 14px; height: 14px; flex: none; }
.post svg, .case svg, .tile svg { width: 14px; height: 14px; flex: none; }

/* 型号标签 */
.chips { display: flex; flex-wrap: wrap; gap: .35rem; }
.chips li {
  font-family: var(--mono); font-size: .74rem; color: var(--blue-deep);
  border: 1px solid #cfe3f2; background: #f2f9fe; padding: .16rem .5rem;
}
.section--dark .chips li { color: #6cc3f0; border-color: var(--on-dark-line); background: var(--ink-3); }
.chips-label {
  font-family: var(--cond); font-size: .8rem; letter-spacing: .14em;
  text-transform: uppercase; color: var(--mute); font-weight: 600;
  display: block; margin-bottom: .55rem;
}

/* --------------------------------------------------------------------------
   8. 产品分类瓦片
   -------------------------------------------------------------------------- */
.tiles { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }
.tiles > * { box-shadow: 0 0 0 1px var(--line); }
@media (max-width: 1080px) { .tiles { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .tiles { grid-template-columns: 1fr; } }
.tile { background: var(--paper); padding: var(--s4); display: grid; gap: var(--s3); align-content: start; transition: background .25s; position: relative; }
.tile:hover { background: var(--paper-2); }
.tile__img { aspect-ratio: 1; background: #fff; display: grid; place-items: center; overflow: hidden; }
.tile__img img { width: 100%; transition: transform .5s var(--ease); }
.tile:hover .tile__img img { transform: scale(1.05); }
.tile__no { font-family: var(--cond); font-size: .8rem; letter-spacing: .14em; color: var(--mute); font-weight: 600; }
.tile h3 { font-size: var(--fs-h3); }
.tile p { margin: 0; font-size: var(--fs-sm); color: var(--steel); line-height: 1.7; }
.tile__models { display: flex; flex-wrap: wrap; gap: .3rem; }
.tile__models span { font-family: var(--mono); font-size: .68rem; color: var(--mute); border: 1px solid var(--line); padding: .12rem .4rem; }

/* 第八格：全部机型入口。深底，和七张分类瓦片区分开 */
.tile--all { background: var(--ink); color: var(--on-dark); align-content: start; }
.tile--all:hover { background: var(--ink-2); }
.tile--all .tile__no { color: #6cc3f0; }
.tile--all h3 { color: #fff; }
.tile--all p { color: var(--on-dark-mute); }
.tile__big {
  font-family: var(--cond); font-weight: 700; line-height: .9;
  font-size: clamp(3.4rem, 2.2rem + 3.4vw, 5.2rem); color: #fff;
  letter-spacing: -0.02em; margin-top: .3rem;
}
.tile__facts { display: grid; gap: .3rem; margin-top: .2rem; }
.tile__facts li {
  font-family: var(--mono); font-size: .7rem; color: var(--on-dark-mute);
  padding-left: .85rem; position: relative;
}
.tile__facts li::before {
  content: ""; position: absolute; left: 0; top: .62em;
  width: 5px; height: 1.5px; background: var(--blue);
}
.tile--all .more { color: #6cc3f0; margin-top: .4rem; }

/* --------------------------------------------------------------------------
   9. 产品台账（本站的列表主形态，不用卡片）
   -------------------------------------------------------------------------- */
.ledger { border-top: 1px solid var(--ink); }
.ledger__row {
  display: grid; grid-template-columns: 62px 96px 1fr 210px 130px; gap: var(--s4);
  align-items: center; padding: 1.05rem 0; border-bottom: 1px solid var(--line-soft);
  transition: background .2s;
}
.ledger__row:hover { background: var(--paper-2); }
.ledger__head {
  font-family: var(--cond); font-size: .78rem; letter-spacing: .16em; text-transform: uppercase;
  color: var(--mute); font-weight: 600; padding-block: .6rem; border-bottom: 1px solid var(--line);
}
.ledger__head:hover { background: transparent; }
.ledger__idx { font-family: var(--mono); font-size: .8rem; color: var(--mute); }
.ledger__thumb { aspect-ratio: 1; background: #fff; border: 1px solid var(--line-soft); overflow: hidden; }
.ledger__thumb img { width: 100%; height: 100%; object-fit: contain; }
.ledger__name { font-weight: 600; font-size: 1.02rem; }
.ledger__name small { display: block; font-weight: 400; font-size: var(--fs-sm); color: var(--steel); margin-top: .18rem; }
.ledger__cat { font-size: var(--fs-sm); color: var(--steel); }
.ledger__act { text-align: right; }
@media (max-width: 900px) {
  .ledger__row { grid-template-columns: 74px 1fr; gap: var(--s3); row-gap: .3rem; padding: 1rem 0; }
  .ledger__idx, .ledger__head { display: none; }
  .ledger__thumb { grid-row: span 3; }
  .ledger__act { text-align: left; }
}

/* --------------------------------------------------------------------------
   10. 图文对照 / 实景
   -------------------------------------------------------------------------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(1.5rem, .6rem + 3.4vw, 4.5rem); align-items: center; }
.split--wide { grid-template-columns: 1.15fr .85fr; }
.split--flip > :first-child { order: 2; }
@media (max-width: 900px) { .split--flip > :first-child { order: 0; } }
@media (max-width: 900px) { .split, .split--wide { grid-template-columns: 1fr; } }
.split__media { position: relative; }
.split__media img { width: 100%; }
.split__media--frame { background: var(--paper); border: 1px solid var(--line); padding: clamp(1rem, .5rem + 1.6vw, 2.2rem); }
.section--alt .split__media--frame { background: var(--paper); }
.split__media::before {
  content: ""; position: absolute; left: -14px; top: -14px; width: 74px; height: 74px;
  border-left: 2px solid var(--blue); border-top: 2px solid var(--blue); z-index: 1;
}

.shots { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 0; }
.shots > * { box-shadow: 0 0 0 1px var(--line); }
.shot { background: var(--paper); }
.shot img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.shot figcaption { padding: .85rem var(--s3); font-size: var(--fs-sm); color: var(--steel); display: flex; justify-content: space-between; gap: .6rem; align-items: baseline; }
.shot figcaption b { color: var(--ink); font-weight: 600; }
.shot figcaption span { font-family: var(--mono); font-size: .68rem; color: var(--mute); }

/* 渲染图网格（白底产品图） */
.renders { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 0; }
.renders > * { box-shadow: 0 0 0 1px var(--line); }
.section--dark .renders > * { box-shadow: 0 0 0 1px var(--on-dark-line); }
.renders figure { margin: 0; background: #fff; padding: var(--s3); display: grid; gap: .5rem; }
.renders img { width: 100%; }
.renders figcaption { font-size: var(--fs-xs); color: var(--steel); text-align: center; }

/* --------------------------------------------------------------------------
   11. 数据带
   -------------------------------------------------------------------------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }
.stats > * { box-shadow: 0 0 0 1px var(--on-dark-line); }
@media (max-width: 860px) { .stats { grid-template-columns: repeat(2, 1fr); } }
.stat { background: var(--ink); padding: clamp(1.3rem, .8rem + 1.6vw, 2.2rem) var(--s4); }
.stat b { display: block; font-family: var(--cond); font-weight: 700; font-size: clamp(2.2rem, 1.4rem + 2.6vw, 3.4rem); line-height: 1; color: #fff; letter-spacing: -0.01em; }
.stat--sm b { font-size: clamp(1.05rem, .78rem + .95vw, 1.5rem); line-height: 1.3; overflow-wrap: anywhere; font-family: var(--mono); font-weight: 500; letter-spacing: -0.01em; }
.stat b i { font-style: normal; font-size: .42em; color: var(--blue); margin-left: .22rem; letter-spacing: 0; }
.stat span { display: block; margin-top: .6rem; font-size: var(--fs-sm); color: var(--on-dark-mute); }

/* --------------------------------------------------------------------------
   12. 行业 / 方案列表
   -------------------------------------------------------------------------- */
.fields { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; }
.fields > * { box-shadow: 0 0 0 1px var(--line); }
@media (max-width: 940px) { .fields { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .fields { grid-template-columns: 1fr; } }
.field { background: var(--paper); padding: var(--s5) var(--s4); display: grid; gap: var(--s2); align-content: start; position: relative; transition: background .25s; }
.field:hover { background: var(--paper-2); }
.field__no { font-family: var(--cond); font-weight: 700; font-size: 1.6rem; color: var(--paper-3); line-height: 1; }
.field:hover .field__no { color: var(--blue); }
.field h3 { font-size: var(--fs-h3); }
.field p { margin: 0; font-size: var(--fs-sm); color: var(--steel); line-height: 1.75; }
.field ul { display: flex; flex-wrap: wrap; gap: .3rem; margin-top: .3rem; }
.field ul li { font-family: var(--mono); font-size: .68rem; color: var(--blue-deep); border: 1px solid #cfe3f2; background: #f2f9fe; padding: .12rem .42rem; }

/* --------------------------------------------------------------------------
   13. 工序 / 流程
   -------------------------------------------------------------------------- */
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 0; }
.steps > * { box-shadow: 0 0 0 1px var(--on-dark-line); }
.step { background: var(--ink); padding: var(--s4); display: grid; gap: .55rem; align-content: start; }
.step b { font-family: var(--cond); font-size: 1.25rem; letter-spacing: .1em; color: var(--blue); font-weight: 700; }
.step h3 { font-size: 1.02rem; color: #fff; }
.step p { margin: 0; font-size: var(--fs-sm); color: var(--on-dark-mute); line-height: 1.72; }

/* --------------------------------------------------------------------------
   14. 案例
   -------------------------------------------------------------------------- */
.cases { display: grid; gap: 0; }
.cases > * { box-shadow: 0 0 0 1px var(--line); }
.case {
  background: var(--paper); display: grid; grid-template-columns: 210px 1fr 260px;
  gap: var(--s5); padding: var(--s5) var(--s4); align-items: center; transition: background .25s;
}
.case:hover { background: var(--paper-2); }
.case__logo { display: grid; place-items: center; padding: var(--s2); }
.case__logo img { max-height: 76px; width: auto; }
.case__body h3 { font-size: var(--fs-h3); margin-bottom: .5rem; }
.case__body p { margin: 0; font-size: var(--fs-sm); color: var(--steel); line-height: 1.78; }
.case__models { display: grid; gap: .3rem; align-content: start; }
.case__models b { font-family: var(--cond); font-size: .76rem; letter-spacing: .14em; text-transform: uppercase; color: var(--mute); font-weight: 600; }
.case__models span { font-family: var(--mono); font-size: .76rem; color: var(--ink); border-left: 2px solid var(--blue); padding-left: .55rem; line-height: 1.55; }
@media (max-width: 960px) { .case { grid-template-columns: 1fr; gap: var(--s3); padding: var(--s4); } .case__logo { justify-content: start; } }

/* logo 墙 */
.logowall { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }
.logowall > * { box-shadow: 0 0 0 1px var(--line); }
@media (max-width: 640px) { .logowall { grid-template-columns: repeat(2, 1fr); } }
.logowall div { background: var(--paper); display: grid; place-items: center; padding: var(--s4); min-height: 120px; }
.logowall img { max-height: 58px; width: auto; filter: grayscale(1); opacity: .62; transition: .3s; }
.logowall div:hover img { filter: none; opacity: 1; }

/* --------------------------------------------------------------------------
   15. 资质 / 清单
   -------------------------------------------------------------------------- */
.checklist { display: grid; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); gap: .1rem var(--s5); }
.checklist li { display: flex; gap: .7rem; align-items: baseline; padding: .62rem 0; border-bottom: 1px solid var(--line-soft); font-size: var(--fs-sm); }
.checklist li::before { content: ""; width: 6px; height: 6px; background: var(--blue); flex: none; transform: translateY(-2px); }
.section--dark .checklist li { border-color: var(--on-dark-line); color: var(--on-dark-mute); }

/* 规格表 */
.spec { font-size: var(--fs-sm); }
.spec caption { text-align: left; font-family: var(--cond); font-size: .82rem; letter-spacing: .14em; text-transform: uppercase; color: var(--mute); font-weight: 600; padding-bottom: .7rem; }
.spec th, .spec td { text-align: left; padding: .82rem var(--s3); border-bottom: 1px solid var(--line-soft); vertical-align: top; }
.spec thead th { background: var(--paper-2); border-bottom: 1px solid var(--line); font-weight: 600; color: var(--ink); white-space: nowrap; }
.spec tbody th { font-weight: 600; white-space: nowrap; }
.spec td.m, .spec th.m { font-family: var(--mono); font-size: .8rem; }
.tablewrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }

/* FAQ */
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  cursor: pointer; list-style: none; padding: 1.15rem 2.5rem 1.15rem 0; position: relative;
  font-weight: 600; font-size: 1.02rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: ""; position: absolute; right: .5rem; top: 1.62rem; width: 11px; height: 11px;
  border-right: 1.6px solid var(--blue); border-bottom: 1.6px solid var(--blue);
  transform: rotate(45deg); transition: transform .3s var(--ease);
}
.faq details[open] summary::after { transform: rotate(-135deg); top: 1.75rem; }
.faq .faq__a { padding: 0 2.5rem 1.3rem 0; color: var(--steel); font-size: var(--fs-sm); line-height: 1.82; }
.faq .faq__a p:last-child { margin-bottom: 0; }

/* --------------------------------------------------------------------------
   16. 新闻
   -------------------------------------------------------------------------- */
.posts { display: grid; gap: 0; border-top: 1px solid var(--line); }
.post {
  display: grid; grid-template-columns: 116px 1fr auto; gap: var(--s4);
  padding: 1.35rem 0; border-bottom: 1px solid var(--line-soft); align-items: baseline; transition: background .2s;
}
.post:hover { background: var(--paper-2); }
.post time { font-family: var(--mono); font-size: .8rem; color: var(--mute); }
.post h3 { font-size: 1.04rem; font-weight: 600; }
.post p { margin: .35rem 0 0; font-size: var(--fs-sm); color: var(--steel); }
.post__tag { font-family: var(--cond); font-size: .74rem; letter-spacing: .12em; text-transform: uppercase; color: var(--blue-deep); border: 1px solid #cfe3f2; padding: .1rem .45rem; white-space: nowrap; }
@media (max-width: 720px) { .post { grid-template-columns: 1fr; gap: .3rem; } .post__tag { justify-self: start; } }

.feature {
  display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(1.2rem,.6rem+2.4vw,3rem);
  border: 1px solid var(--line); background: var(--paper); align-items: center; margin-bottom: var(--s5);
}
.feature img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 16/10; }
.feature__body { padding: var(--s5) var(--s4); display: grid; gap: var(--s2); }
@media (max-width: 800px) { .feature { grid-template-columns: 1fr; } }

/* --------------------------------------------------------------------------
   17. 内页页头
   -------------------------------------------------------------------------- */
.pagehead { background: var(--ink); color: var(--on-dark); position: relative; overflow: hidden; padding-block: clamp(2.6rem, 1.6rem + 3.6vw, 5rem); }
.pagehead__no { font-family: var(--cond); font-size: .84rem; letter-spacing: .2em; text-transform: uppercase; color: #6cc3f0; font-weight: 600; }
.pagehead h1 { font-size: var(--fs-h1); color: #fff; margin-top: .55rem; }
.pagehead p { margin: var(--s3) 0 0; max-width: 60ch; color: var(--on-dark-mute); font-size: var(--fs-lede); }
.crumb { display: flex; gap: .5rem; flex-wrap: wrap; font-size: var(--fs-xs); color: var(--on-dark-mute); margin-top: var(--s4); }
.crumb a:hover { color: #fff; }
.crumb li:not(:last-child)::after { content: "/"; margin-left: .5rem; opacity: .5; }
.crumb li { display: flex; }

/* 锚点导航 */
.anchors { border-bottom: 1px solid var(--line); background: var(--paper); position: sticky; top: 76px; z-index: 40; }
.anchors ul { display: flex; gap: var(--s5); overflow-x: auto; -webkit-overflow-scrolling: touch; scrollbar-width: none; }
.anchors ul::-webkit-scrollbar { display: none; }
.anchors a { display: block; padding: 1rem 0; font-size: var(--fs-sm); color: var(--steel); white-space: nowrap; border-bottom: 2px solid transparent; }
.anchors a:hover { color: var(--blue-deep); border-color: var(--blue); }
@media (max-width: 1100px) { .anchors { top: 0; } }

/* --------------------------------------------------------------------------
   18. 表单
   -------------------------------------------------------------------------- */
.form { display: grid; gap: var(--s4); }
.form__grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s4); }
@media (max-width: 640px) { .form__grid { grid-template-columns: 1fr; } }
.field-l { display: grid; gap: .45rem; }
.field-l > span { font-size: var(--fs-sm); font-weight: 600; }
.field-l > span em { font-style: normal; color: var(--signal); }
.field-l input, .field-l select, .field-l textarea {
  font: inherit; font-size: .95rem; padding: .78rem .9rem; border: 1px solid var(--line);
  background: var(--paper); color: var(--ink); width: 100%; transition: border-color .2s;
}
.field-l textarea { min-height: 128px; resize: vertical; }
.field-l input:focus, .field-l select:focus, .field-l textarea:focus { border-color: var(--blue); outline: none; }
.form__note { font-size: var(--fs-xs); color: var(--mute); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.form__status { font-size: var(--fs-sm); padding: .8rem 1rem; border-left: 3px solid var(--blue); background: #f2f9fe; }
.form__status[data-err] { border-color: var(--signal); background: #fff4ee; }

.contactcards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; }
.contactcards > * { box-shadow: 0 0 0 1px var(--line); }
.section--dark .contactcards > * { box-shadow: 0 0 0 1px var(--on-dark-line); }
@media (max-width: 900px) { .contactcards { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .contactcards { grid-template-columns: 1fr; } }
.contactcards a, .contactcards strong { overflow-wrap: anywhere; }
.contactcards > div { background: var(--paper); padding: var(--s4); display: grid; gap: .4rem; align-content: start; }
.contactcards b { font-family: var(--cond); font-size: .8rem; letter-spacing: .16em; text-transform: uppercase; color: var(--mute); font-weight: 600; }
.contactcards strong { font-size: 1.12rem; font-weight: 600; }
.contactcards .mono { font-size: 1.05rem; }
.contactcards p { margin: 0; font-size: var(--fs-sm); color: var(--steel); }

/* --------------------------------------------------------------------------
   19. CTA 带
   -------------------------------------------------------------------------- */
.cta { background: var(--ink-2); color: var(--on-dark); position: relative; overflow: hidden; }
.cta__deco {
  position: absolute; right: -4%; top: 50%; translate: 0 -50%;
  width: min(430px, 40%); opacity: .13; pointer-events: none; z-index: 0;
}
@media (max-width: 900px) { .cta__deco { display: none; } }
.cta__in { position: relative; z-index: 1; display: flex; justify-content: space-between; align-items: center; gap: var(--s5); padding-block: clamp(2.2rem,1.4rem+2.4vw,3.6rem); flex-wrap: wrap; }
.cta h2 { font-size: clamp(1.4rem,1.1rem+1.2vw,2rem); color: #fff; }
.cta p { margin: .6rem 0 0; color: var(--on-dark-mute); font-size: var(--fs-sm); }
.cta__acts { display: flex; gap: var(--s3); flex-wrap: wrap; align-items: center; }
.cta__tel { font-family: var(--mono); font-size: clamp(1.3rem,1rem+1.2vw,1.9rem); color: #fff; }

/* --------------------------------------------------------------------------
   20. 页脚
   -------------------------------------------------------------------------- */
.foot { background: var(--ink); color: var(--on-dark-mute); font-size: var(--fs-sm); padding-top: var(--sec); }
.foot__grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr 190px; gap: var(--s5); padding-bottom: var(--s6); }
@media (max-width: 1080px) { .foot__grid { grid-template-columns: 1fr 1fr 1fr; } }
@media (max-width: 640px) { .foot__grid { grid-template-columns: 1fr 1fr; } }
.foot__brand img { height: 44px; margin-bottom: var(--s3); }
.foot__brand p { font-size: var(--fs-sm); line-height: 1.8; margin: 0 0 var(--s3); max-width: 34ch; }
.foot h4 { font-family: var(--cond); font-size: .84rem; letter-spacing: .16em; text-transform: uppercase; color: #fff; font-weight: 600; margin-bottom: var(--s3); }
.foot li { padding: .3rem 0; }
.foot a:hover { color: #fff; }
.foot__qr { text-align: center; }
.foot__qr img { width: 130px; margin: 0 auto .6rem; background: #fff; padding: 6px; }
.foot__qr span { font-size: var(--fs-xs); }
.foot__contact li { display: grid; gap: .1rem; padding: .42rem 0; }
.foot__contact b { color: #fff; font-family: var(--mono); font-weight: 500; font-size: .95rem; }
.foot__bar { border-top: 1px solid var(--on-dark-line); padding-block: var(--s4); display: flex; justify-content: space-between; gap: var(--s4); flex-wrap: wrap; font-size: var(--fs-xs); }
.foot__bar a { text-decoration: underline; text-underline-offset: 3px; }
.foot__ga { display: inline-flex; align-items: center; gap: .3rem; }
.foot__ga img { display: inline-block; width: 14px; height: 14px; flex: none; }
.foot__kw { color: #47525d; }

/* --------------------------------------------------------------------------
   21. 浮动
   -------------------------------------------------------------------------- */
.fab { position: fixed; right: 0; bottom: 18%; z-index: 80; display: grid; gap: 1px; }
.fab a, .fab button {
  width: 58px; height: 58px; background: var(--ink-2); color: #fff; border: none; cursor: pointer;
  display: grid; place-items: center; gap: 2px; transition: background .2s; position: relative;
}
.fab a:hover, .fab button:hover { background: var(--blue); }
.fab svg { width: 19px; height: 19px; }
.fab em { font-style: normal; font-size: .58rem; font-family: var(--cond); letter-spacing: .08em; text-transform: uppercase; }
.fab__top[hidden] { display: none !important; }
@media (max-width: 720px) { .fab { bottom: 0; right: 0; left: 0; grid-template-columns: repeat(3, 1fr); grid-auto-flow: column; } .fab a, .fab button { width: auto; height: 54px; } }

/* --------------------------------------------------------------------------
   22. 正文排版
   -------------------------------------------------------------------------- */
.prose { font-size: 1.02rem; line-height: 1.92; color: #26313b; }
.prose h2 { font-size: 1.5rem; margin: 2.4rem 0 .9rem; }
.prose h3 { font-size: 1.16rem; margin: 2rem 0 .7rem; }
.prose p { margin: 0 0 1.15em; }
.prose ul { margin: 0 0 1.25em; display: grid; gap: .45rem; }
.prose ul li { padding-left: 1.15rem; position: relative; }
.prose ul li::before { content: ""; position: absolute; left: 0; top: .78em; width: 6px; height: 1.5px; background: var(--blue); }
.prose strong { font-weight: 600; }
.prose .callout { border-left: 3px solid var(--blue); background: var(--paper-2); padding: var(--s3) var(--s4); margin: 0 0 1.4em; font-size: var(--fs-sm); }

/* --------------------------------------------------------------------------
   23. 入场动效
   -------------------------------------------------------------------------- */
[data-reveal] { opacity: 0; transform: translateY(16px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
[data-reveal].is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { [data-reveal] { opacity: 1; transform: none; transition: none; } }

/* 工具 */
.stack { display: grid; gap: var(--s4); }
.stack--lg { gap: var(--s5); }
.center { text-align: center; }
.mt5 { margin-top: var(--s5); }
.mt6 { margin-top: var(--s6); }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }