/* ==========================================================================
   JJR Mechanical — jjrhvacnyc.com
   设计系统：冷调工业美学。配色取自品牌 logo 的红/蓝，与首屏视频的冷蓝灰调统一。
   ========================================================================== */

/* ---------- Tokens ---------- */
:root {
  /* 深色阶 —— 首屏、导航、页脚、深色区块 */
  --ink:        #0A0F16;
  --ink-2:      #101822;
  --ink-3:      #18222E;
  --ink-4:      #22303F;

  /* 品牌色 —— 取自 JJR 原 logo */
  --red:        #C21E2B;
  --red-hi:     #DC2F3D;
  --blue:       #1E506E;
  --blue-2:     #4678A0;
  --blue-hi:    #6FA3C9;

  /* 中性 */
  --steel:      #7C8FA1;
  --mist:       #B9C6D2;
  --paper:      #FFFFFF;
  --paper-2:    #F4F7F9;
  --paper-3:    #E8EDF2;

  --line-d:     rgba(255,255,255,.11);
  --line-d2:    rgba(255,255,255,.18);
  --line-l:     rgba(11,22,34,.10);
  --line-l2:    rgba(11,22,34,.16);

  /* 排版 */
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
          'Helvetica Neue', Arial, 'PingFang SC', 'Microsoft YaHei', sans-serif;

  /* 尺度 */
  --wrap: 1280px;
  --wrap-narrow: 900px;
  --gut: 24px;
  --nav-h: 76px;
  --nav-h-sm: 62px;
  --bottom-nav-h: 60px;

  --r-sm: 6px;
  --r:    10px;
  --r-lg: 16px;

  --sh-1: 0 1px 2px rgba(11,22,34,.06), 0 4px 12px rgba(11,22,34,.06);
  --sh-2: 0 2px 6px rgba(11,22,34,.08), 0 14px 34px rgba(11,22,34,.12);
  --sh-3: 0 8px 20px rgba(11,22,34,.12), 0 28px 60px rgba(11,22,34,.18);

  --ease: cubic-bezier(.22,.61,.36,1);
  --ease-out: cubic-bezier(.16,1,.3,1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.7;
  color: #1B2733;
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
img, svg, video { display: block; max-width: 100%; }
img { height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, h5 { margin: 0; font-weight: 700; line-height: 1.15; letter-spacing: -.02em; }
p { margin: 0; }
:focus-visible { outline: 2px solid var(--blue-hi); outline-offset: 3px; border-radius: 3px; }

/* ---------- Typography scale ---------- */
.h-hero  { font-size: clamp(2.05rem, 4.2vw, 3.9rem); font-weight: 800; letter-spacing: -.032em; line-height: 1.06; }
.h-1     { font-size: clamp(2rem, 4vw, 3.2rem);   letter-spacing: -.03em; line-height: 1.1; }
.h-2     { font-size: clamp(1.6rem, 2.8vw, 2.4rem); letter-spacing: -.025em; line-height: 1.18; }
.h-3     { font-size: clamp(1.2rem, 1.7vw, 1.45rem); letter-spacing: -.015em; line-height: 1.3; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: .76rem; font-weight: 700; letter-spacing: .16em;
  text-transform: uppercase; color: var(--blue-2);
}
.eyebrow::before {
  content: ''; width: 26px; height: 2px; background: var(--red); flex: none;
}
.eyebrow--light { color: #A6D2F0; text-shadow: 0 1px 10px rgba(0,0,0,.55); }
.eyebrow--light::before { background: var(--red-hi); box-shadow: 0 0 8px rgba(0,0,0,.4); }
.eyebrow--center { justify-content: center; }

.lede { font-size: clamp(1.02rem, 1.35vw, 1.18rem); line-height: 1.75; color: #43566A; }
.on-dark .lede, .lede--light { color: var(--mist); }

/* ---------- Layout ---------- */
.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: var(--gut); }
.wrap-narrow { width: 100%; max-width: var(--wrap-narrow); margin-inline: auto; padding-inline: var(--gut); }
.section { padding-block: clamp(64px, 8vw, 116px); }
.section--tight { padding-block: clamp(48px, 5.5vw, 78px); }
.section--dark { background: var(--ink); color: var(--paper); }
.section--ink2 { background: var(--ink-2); color: var(--paper); }
.section--soft { background: var(--paper-2); }
.section--dark h2, .section--ink2 h2, .section--dark h3, .section--ink2 h3 { color: var(--paper); }

.sec-head { max-width: 760px; margin-bottom: clamp(34px, 4vw, 54px); }
.sec-head--center { margin-inline: auto; text-align: center; }
.sec-head .h-1, .sec-head .h-2 { margin-top: 16px; }
.sec-head p { margin-top: 18px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 15px 30px; border-radius: var(--r-sm);
  font-size: .95rem; font-weight: 700; letter-spacing: .01em;
  transition: transform .22s var(--ease), box-shadow .22s var(--ease),
              background-color .22s var(--ease), color .22s var(--ease),
              border-color .22s var(--ease);
  will-change: transform;
}
.btn svg { flex: none; }
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--primary { background: var(--red); color: #fff; box-shadow: 0 6px 18px rgba(194,30,43,.32); }
.btn--primary:hover { background: var(--red-hi); box-shadow: 0 10px 26px rgba(194,30,43,.42); }

.btn--ghost {
  border: 1.5px solid rgba(255,255,255,.42); color: #fff;
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  background: rgba(255,255,255,.13);
  text-shadow: 0 1px 6px rgba(0,0,0,.4);
}
.btn--ghost:hover { background: rgba(255,255,255,.24); border-color: rgba(255,255,255,.72); }

.btn--dark { background: var(--ink); color: #fff; }
.btn--dark:hover { background: var(--ink-3); box-shadow: var(--sh-2); }

.btn--outline { border: 1.5px solid var(--line-l2); color: var(--ink); }
.btn--outline:hover { border-color: var(--ink); background: var(--ink); color: #fff; }

.btn-row { display: flex; flex-wrap: wrap; gap: 14px; }
.btn-row--center { justify-content: center; }

/* 文字箭头链接 */
.arrow-link {
  display: inline-flex; align-items: center; gap: 9px;
  font-weight: 700; font-size: .93rem; color: var(--blue);
}
.arrow-link svg { transition: transform .25s var(--ease); }
.arrow-link:hover svg { transform: translateX(5px); }
.on-dark .arrow-link, .arrow-link--light { color: var(--blue-hi); }

/* ==========================================================================
   Header / Navigation
   桌面 >=1024px 完整展开；平板 768–1023px 紧凑但全部可见；<768px 汉堡
   ========================================================================== */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 90;
  height: var(--nav-h);
  display: flex; align-items: center;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background-color .35s var(--ease), border-color .35s var(--ease),
              backdrop-filter .35s var(--ease), height .35s var(--ease);
}
.site-header.is-solid {
  background: rgba(10,15,22,.92);
  backdrop-filter: blur(14px) saturate(1.4);
  -webkit-backdrop-filter: blur(14px) saturate(1.4);
  border-bottom-color: var(--line-d);
  height: 66px;
}
.site-header.is-open { background: var(--ink); backdrop-filter: none; }

/* 非首页：默认就是实心 */
.site-header.is-static { position: sticky; background: rgba(10,15,22,.96); backdrop-filter: blur(14px); border-bottom-color: var(--line-d); }

.nav-inner {
  width: 100%; max-width: var(--wrap); margin-inline: auto;
  padding-inline: var(--gut);
  display: flex; align-items: center; gap: 22px;
}

/* logo 用深色背景专用版：菱形图标保持原色不动，仅文字反白。
   因此不需要任何底色 —— 直接叠在视频/深色导航上。 */
/* 无底色，但用 min-height 把点击区撑到 44px（视觉上无变化） */
.brand { display: flex; align-items: center; flex: none; min-height: 44px; }
.brand img { height: 50px; width: auto; transition: height .35s var(--ease); }
.site-header.is-solid .brand img { height: 44px; }

/* 主导航 */
.nav { margin-inline: auto; display: flex; align-items: center; gap: 2px; }
.nav-item { position: relative; }
.nav-link {
  display: flex; align-items: center; gap: 6px;
  padding: 10px 14px; border-radius: var(--r-sm);
  font-size: .9rem; font-weight: 600; color: rgba(255,255,255,.88);
  white-space: nowrap;
  transition: color .2s var(--ease), background-color .2s var(--ease);
}
.nav-link:hover, .nav-item:focus-within > .nav-link { color: #fff; background: rgba(255,255,255,.10); }
.nav-link[aria-current="page"] { color: #fff; }
.nav-link[aria-current="page"]::after {
  content: ''; position: absolute; left: 14px; right: 14px; bottom: 3px;
  height: 2px; background: var(--red); border-radius: 2px;
}
.nav-link .caret { transition: transform .25s var(--ease); opacity: .85; margin-left: -1px; }
.nav-item:hover .caret, .nav-item:focus-within .caret { transform: rotate(180deg); }

/* 下拉 */
.dropdown {
  position: absolute; top: calc(100% + 8px); left: 0; min-width: 274px;
  background: #fff; border-radius: var(--r); box-shadow: var(--sh-3);
  padding: 8px; opacity: 0; visibility: hidden; transform: translateY(-8px);
  transition: opacity .22s var(--ease), transform .22s var(--ease), visibility .22s;
  border: 1px solid var(--line-l);
}
.nav-item:hover .dropdown, .nav-item:focus-within .dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown a {
  display: block; padding: 11px 14px; border-radius: var(--r-sm);
  font-size: .9rem; font-weight: 600; color: #24313F;
  transition: background-color .18s var(--ease), color .18s var(--ease);
}
.dropdown a small { display: block; font-size: .78rem; font-weight: 500; color: var(--steel); margin-top: 2px; }
.dropdown a:hover { background: var(--paper-2); color: var(--red); }
.dropdown a:hover small { color: var(--steel); }

/* 导航右侧电话 CTA */
.nav-cta { display: flex; align-items: center; gap: 12px; flex: none; margin-left: 6px; }
.nav-phone {
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: 700; font-size: .92rem; color: #fff; white-space: nowrap;
  padding: 9px 14px; border-radius: var(--r-sm);
  border: 1px solid var(--line-d2);
  transition: background-color .2s var(--ease), border-color .2s var(--ease);
}
.nav-phone:hover { background: rgba(255,255,255,.12); border-color: rgba(255,255,255,.4); }
.nav-quote {
  padding: 11px 20px; border-radius: var(--r-sm);
  background: var(--red); color: #fff; font-weight: 700; font-size: .9rem;
  white-space: nowrap;
  transition: background-color .2s var(--ease), transform .2s var(--ease), box-shadow .2s var(--ease);
}
.nav-quote:hover { background: var(--red-hi); transform: translateY(-1px); box-shadow: 0 6px 16px rgba(194,30,43,.4); }
.q-short { display: none; }   /* 平板断点下替换为短文案，见媒体查询 */

/* 汉堡按钮（仅 <768px 出现） */
.burger {
  display: none; align-items: center; gap: 9px;
  margin-left: auto; padding: 9px 13px;
  border: 1px solid var(--line-d2); border-radius: var(--r-sm);
  color: #fff; font-size: .82rem; font-weight: 700; letter-spacing: .04em;
}
.burger-ico { position: relative; width: 18px; height: 12px; flex: none; }
.burger-ico span {
  position: absolute; left: 0; width: 100%; height: 2px; background: currentColor;
  border-radius: 2px; transition: transform .3s var(--ease), opacity .2s var(--ease);
}
.burger-ico span:nth-child(1) { top: 0; }
.burger-ico span:nth-child(2) { top: 5px; }
.burger-ico span:nth-child(3) { top: 10px; }
.is-open .burger-ico span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.is-open .burger-ico span:nth-child(2) { opacity: 0; }
.is-open .burger-ico span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* 移动抽屉 */
.drawer {
  position: fixed; inset: var(--nav-h-sm) 0 0 0; z-index: 89;
  background: var(--ink); color: #fff;
  padding: 18px var(--gut) calc(var(--bottom-nav-h) + 32px);
  /* 关闭状态下也不能撑大文档宽度（超小屏会因此出现横向滚动） */
  max-width: 100%; overflow: hidden auto;
  transform: translateY(-8px); opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity .28s var(--ease), transform .28s var(--ease), visibility .28s;
}
.drawer.is-open { opacity: 1; visibility: visible; transform: translateY(0); pointer-events: auto; }
.drawer a { display: block; }
.drawer .d-link {
  padding: 15px 4px; font-size: 1.06rem; font-weight: 700;
  border-bottom: 1px solid var(--line-d);
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
}
.drawer .d-link svg { flex: none; }
.drawer .d-sub { padding: 4px 0 10px 14px; border-bottom: 1px solid var(--line-d); }
.drawer .d-sub a { padding: 11px 4px; font-size: .95rem; font-weight: 600; color: var(--mist); }
.drawer .d-sub a:hover { color: #fff; }
.drawer-cta { margin-top: 26px; display: grid; gap: 12px; }
.drawer-cta .btn { width: 100%; }
.drawer-meta { margin-top: 26px; padding-top: 20px; border-top: 1px solid var(--line-d); color: var(--mist); font-size: .9rem; }
.drawer-meta a { color: #fff; font-weight: 700; }

/* 移动端底部固定导航 */
.bottom-nav {
  position: fixed; inset: auto 0 0 0; z-index: 95;
  display: none; height: var(--bottom-nav-h);
  background: rgba(10,15,22,.97);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-top: 1px solid var(--line-d);
  padding-bottom: env(safe-area-inset-bottom);
}
.bottom-nav ul { display: grid; grid-template-columns: repeat(5, 1fr); height: 100%; }
.bottom-nav a {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 3px;
  height: 100%; color: rgba(255,255,255,.7);
  font-size: .66rem; font-weight: 600; letter-spacing: .01em;
  transition: color .2s var(--ease);
}
.bottom-nav a svg { width: 21px; height: 21px; }
.bottom-nav a:hover, .bottom-nav a.is-active { color: #fff; }
.bottom-nav a.is-active svg { color: var(--red-hi); }
.bottom-nav .bn-accent { color: var(--red-hi); }

/* ==========================================================================
   Hero — 全屏视频背景
   ========================================================================== */
.hero {
  position: relative; min-height: 100svh;
  display: flex; align-items: center;
  background: var(--ink); color: #fff; overflow: hidden;
}
.hero-media { position: absolute; inset: 0; z-index: 0; background: var(--ink); }
.hero-media video, .hero-media img.hero-fallback {
  width: 100%; height: 100%;
  /* 桌面/宽屏：铺满整个首屏，左右不留白。
     视口比例与 16:9 不一致时会裁掉上下少量画面 —— 全宽与不裁切互斥，
     这里按「全宽优先」取舍。手机端见下方媒体查询，仍为完整显示。 */
  object-fit: cover; object-position: center;
}
/* 首屏不再叠遮罩层（按用户要求移除）。标题可读性由两处保证：
   1) 视频本身已压暗降饱和  2) 标题与正文自带多层 text-shadow */
/* 底部收边（仅底部微渐变，保证与下一段衔接，不影响遮罩均匀度） */
.hero-hem {
  position: absolute; inset: auto 0 0 0; height: 26%; z-index: 1; pointer-events: none;
  background: linear-gradient(to bottom, rgba(8,9,11,0), rgba(8,9,11,.72));
}
.hero-inner { position: relative; z-index: 2; width: 100%; padding-block: calc(var(--nav-h) + 34px) 84px; }
.hero-copy { max-width: 830px; }
/* 视频亮度不可控，标题靠自身阴影保证可读（遮罩层保持全屏统一 0.2） */
.hero h1 {
  margin: 20px 0 0;
  text-shadow: 0 2px 10px rgba(0,0,0,.55), 0 6px 34px rgba(0,0,0,.45);
}
/* 用纯色而非 background-clip 渐变：渐变文字叠 drop-shadow 会被合成成灰色，
   在明暗不定的视频上可读性不可控。冷调白保留品牌感，同时保证对比度。 */
.hero h1 .accent { color: #E4F1FB; }
.hero-sub {
  margin-top: 22px; max-width: 620px;
  font-size: clamp(1rem, 1.15vw, 1.1rem); line-height: 1.7;
  color: rgba(255,255,255,.95);
  text-shadow: 0 1px 3px rgba(0,0,0,.6), 0 2px 18px rgba(0,0,0,.55);
}
.hero .btn-row { margin-top: 34px; }

/* 首屏资质条 */
.hero-badges {
  margin-top: 34px; padding-top: 22px;
  border-top: 1px solid rgba(255,255,255,.22);
  display: flex; flex-wrap: wrap; gap: 12px 34px;
}
.hero-badges li {
  display: flex; align-items: center; gap: 9px;
  font-size: .88rem; font-weight: 600; color: rgba(255,255,255,.94);
  text-shadow: 0 1px 8px rgba(0,0,0,.55);
}
.hero-badges svg { color: #A6D2F0; flex: none; }

/* 滚动提示 */
.scroll-hint {
  position: absolute; left: 50%; bottom: 26px; z-index: 3;
  transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  font-size: .68rem; font-weight: 700; letter-spacing: .18em; text-transform: uppercase;
  color: rgba(255,255,255,.62);
}
.scroll-hint i {
  width: 1px; height: 34px; background: linear-gradient(to bottom, rgba(255,255,255,.7), transparent);
  animation: hintPulse 2.1s var(--ease) infinite;
}
@keyframes hintPulse { 0%,100% { opacity: .25; transform: scaleY(.6); transform-origin: top; } 50% { opacity: 1; transform: scaleY(1); } }
/* 矮视口（笔记本）空间不足，避免与首屏资质条重叠 */
@media (max-height: 960px) { .scroll-hint { display: none; } }

/* 首屏入场 */
.hero-copy > * { animation: heroIn .9s var(--ease-out) both; }
.hero-copy > *:nth-child(1) { animation-delay: .05s; }
.hero-copy > *:nth-child(2) { animation-delay: .14s; }
.hero-copy > *:nth-child(3) { animation-delay: .23s; }
.hero-copy > *:nth-child(4) { animation-delay: .32s; }
.hero-copy > *:nth-child(5) { animation-delay: .41s; }
@keyframes heroIn { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: none; } }

/* 内页头图 */
.page-hero {
  position: relative; background: var(--ink); color: #fff; overflow: hidden;
  padding-block: calc(var(--nav-h) + 58px) 62px;
}
/* 无背景图时的默认光晕 */
.page-hero::after {
  content: ''; position: absolute; inset: 0; z-index: 1;
  background: radial-gradient(120% 100% at 78% 0%, rgba(70,120,160,.30), transparent 62%),
              radial-gradient(80% 80% at 0% 100%, rgba(194,30,43,.16), transparent 60%);
  pointer-events: none;
}
.page-hero--img::after { display: none; }

/* 内页首屏背景图 */
.ph-bg { position: absolute; inset: 0; z-index: 0; overflow: hidden; background: var(--ink); }
.ph-bg img {
  width: 100%; height: 100%; object-fit: cover; object-position: center 42%;
  /* 静态图上文字更多，压暗与降饱和都比首屏视频强一档，保证标题与面包屑可读 */
  filter: grayscale(.28) brightness(.62) contrast(1.06);
}
.ph-bg::after {
  content: ''; position: absolute; inset: 0;
  background:
    linear-gradient(105deg, rgba(6,10,16,.92) 0%, rgba(6,10,16,.72) 46%, rgba(6,10,16,.44) 100%),
    linear-gradient(to bottom, rgba(6,10,16,.55) 0%, rgba(6,10,16,0) 42%, rgba(6,10,16,.62) 100%);
}
.page-hero .wrap { position: relative; z-index: 2; }
.page-hero--img h1, .page-hero--img .lede { text-shadow: 0 2px 14px rgba(0,0,0,.5); }
.page-hero h1 { margin-top: 18px; }
.page-hero p { margin-top: 18px; max-width: 700px; }
.crumbs { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: .82rem; color: var(--steel); }
.crumbs a { color: var(--mist); }
.crumbs a:hover { color: #fff; }
.crumbs span { opacity: .5; }

/* ==========================================================================
   Cards — 整卡片可点击
   ========================================================================== */
.card-grid { display: grid; gap: 22px; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.card-grid--3 { grid-template-columns: repeat(3, 1fr); }
.card-grid--4 { grid-template-columns: repeat(4, 1fr); }
.card-grid--2 { grid-template-columns: repeat(2, 1fr); }

/* 入口卡片（首页核心子页入口） */
.entry-card {
  position: relative; display: flex; flex-direction: column;
  min-height: 300px; padding: 28px;
  border-radius: var(--r-lg); overflow: hidden;
  background: var(--ink-3); color: #fff; isolation: isolate;
  transition: transform .4s var(--ease), box-shadow .4s var(--ease);
}
.entry-card::before {
  content: ''; position: absolute; inset: 0; z-index: -2;
  background-image: var(--bg); background-size: cover; background-position: center;
  transition: transform .7s var(--ease);
}
/* 背景照片明暗不可控（工地照有大量浅色墙面/天空），遮罩需足够强才能保证标题可读 */
.entry-card::after {
  content: ''; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(to top, rgba(5,9,14,.97) 6%, rgba(5,9,14,.86) 42%, rgba(5,9,14,.60) 100%);
  transition: background .4s var(--ease);
}
.entry-card:hover { transform: translateY(-6px); box-shadow: var(--sh-3); }
.entry-card:hover::before { transform: scale(1.07); }
.entry-card:hover::after { background: linear-gradient(to top, rgba(5,9,14,.97) 6%, rgba(8,22,36,.84) 44%, rgba(24,66,94,.58) 100%); }
.entry-card .ec-top { display: flex; align-items: center; gap: 10px; margin-bottom: auto; }
.entry-card .ec-num { font-size: .74rem; font-weight: 800; letter-spacing: .14em; color: #9CCBEC; }
.entry-card h3 { margin-top: 18px; font-size: 1.32rem; }
.entry-card p { margin-top: 10px; font-size: .92rem; color: rgba(255,255,255,.8); line-height: 1.6; }
.entry-card .ec-go {
  margin-top: 18px; display: inline-flex; align-items: center; gap: 8px;
  font-size: .86rem; font-weight: 700; color: #fff;
}
.entry-card .ec-go svg { transition: transform .3s var(--ease); }
.entry-card:hover .ec-go svg { transform: translateX(5px); }
/* 整卡片触发 */
.stretch::after { content: ''; position: absolute; inset: 0; z-index: 5; }

/* 服务卡片（浅色） */
.svc-card {
  position: relative; display: flex; flex-direction: column;
  padding: 30px 28px 28px; background: #fff;
  border: 1px solid var(--line-l); border-radius: var(--r-lg);
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s var(--ease);
}
.svc-card:hover { transform: translateY(-5px); box-shadow: var(--sh-2); border-color: transparent; }
.svc-ico {
  width: 50px; height: 50px; border-radius: 12px; flex: none;
  display: grid; place-items: center; color: #fff;
  background: linear-gradient(140deg, var(--blue) 0%, var(--blue-2) 100%);
  box-shadow: 0 6px 16px rgba(30,80,110,.28);
}
.svc-card h3 { margin-top: 20px; font-size: 1.16rem; }
.svc-card p { margin-top: 11px; font-size: .93rem; color: #4E6072; line-height: 1.65; }
.svc-card ul { margin-top: 16px; display: grid; gap: 8px; }
.svc-card ul li {
  position: relative; padding-left: 20px; font-size: .88rem; color: #52657A;
}
.svc-card ul li::before {
  content: ''; position: absolute; left: 0; top: .62em;
  width: 7px; height: 7px; border-radius: 50%; background: var(--red); opacity: .8;
}
.svc-card .arrow-link { margin-top: 20px; }

/* 项目卡片 */
.proj-card {
  position: relative; display: flex; flex-direction: column;
  background: #fff; border: 1px solid var(--line-l);
  border-radius: var(--r-lg); overflow: hidden;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease);
}
.proj-card:hover { transform: translateY(-5px); box-shadow: var(--sh-3); }
.proj-thumb { position: relative; aspect-ratio: 4/3; overflow: hidden; background: var(--paper-3); }
.proj-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .65s var(--ease); }
.proj-card:hover .proj-thumb img { transform: scale(1.07); }
.proj-count {
  position: absolute; right: 12px; bottom: 12px; z-index: 2;
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 11px; border-radius: 100px;
  background: rgba(8,13,20,.82); backdrop-filter: blur(8px);
  color: #fff; font-size: .74rem; font-weight: 700;
}
.proj-body { padding: 22px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.proj-body h3 { font-size: 1.08rem; line-height: 1.35; }
.proj-meta { margin-top: 10px; display: flex; flex-wrap: wrap; gap: 6px 14px; font-size: .84rem; color: var(--steel); }
.proj-meta span { display: inline-flex; align-items: center; gap: 6px; }
/* 标题行数不同也让 CTA 底部对齐 */
.proj-body .arrow-link { margin-top: auto; padding-top: 16px; }

/* ==========================================================================
   Split — 左图右文等高
   ========================================================================== */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(28px, 4vw, 64px); align-items: stretch; }
/* 修饰类 —— 不要用内联 style 设置列宽，内联样式会覆盖移动端的单列规则 */
.split--main { grid-template-columns: 1.55fr 1fr; }
.split--form { grid-template-columns: 1.3fr 1fr; }
.split--top  { align-items: start; }
.split--rev .split-media { order: 2; }
.split-media { position: relative; border-radius: var(--r-lg); overflow: hidden; min-height: 100%; background: var(--paper-3); }
.split-media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.split-copy { display: flex; flex-direction: column; justify-content: center; padding-block: 6px; }
.split-copy .h-1, .split-copy .h-2 { margin-top: 16px; }
.split-copy p { margin-top: 18px; }
.split-copy .btn-row, .split-copy .arrow-link { margin-top: 28px; }

/* 要点列表 */
.point-list { margin-top: 26px; display: grid; gap: 18px; }
.point-list li { display: flex; gap: 14px; }
.point-ico {
  width: 34px; height: 34px; border-radius: 9px; flex: none;
  display: grid; place-items: center;
  background: rgba(30,80,110,.10); color: var(--blue);
}
.on-dark .point-ico, .section--dark .point-ico, .section--ink2 .point-ico {
  background: rgba(111,163,201,.16); color: var(--blue-hi);
}
.point-list h4 { font-size: 1rem; font-weight: 700; }
.point-list p { margin-top: 5px; font-size: .91rem; color: #536679; line-height: 1.62; }
.section--dark .point-list p, .section--ink2 .point-list p { color: var(--mist); }

/* ==========================================================================
   Stats
   ========================================================================== */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line-d); border-radius: var(--r-lg); overflow: hidden; }
.stat { padding: 30px 24px; background: var(--ink-2); text-align: center; }
.stat-num { font-size: clamp(2rem, 3.4vw, 2.9rem); font-weight: 800; letter-spacing: -.03em; color: #fff; line-height: 1; }
.stat-num .suf { color: var(--blue-hi); }
.stat-lab { margin-top: 10px; font-size: .84rem; font-weight: 600; color: var(--mist); letter-spacing: .02em; }

/* ==========================================================================
   Brand wall
   ========================================================================== */
.brandwall { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 18px; }
.brandwall li {
  padding: 14px 26px; border: 1px solid var(--line-l); border-radius: var(--r);
  background: #fff; font-weight: 700; font-size: .95rem; color: #3C4E60;
  letter-spacing: .01em;
  transition: transform .28s var(--ease), border-color .28s var(--ease), box-shadow .28s var(--ease), color .28s var(--ease);
}
.brandwall li:hover { transform: translateY(-3px); border-color: var(--blue-2); color: var(--blue); box-shadow: var(--sh-1); }
.brand-strip { margin-top: 30px; display: grid; place-items: center; }
.brand-strip img { max-width: 780px; width: 100%; }

/* ==========================================================================
   Gallery（工程相册）
   ========================================================================== */
.gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(228px, 1fr)); gap: 14px; }
.gal-item {
  position: relative; aspect-ratio: 4/3; border-radius: var(--r); overflow: hidden;
  background: var(--paper-3); cursor: zoom-in;
}
.gal-item img { width: 100%; height: 100%; object-fit: cover; transition: transform .55s var(--ease); }
.gal-item::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(8,13,20,.42), transparent 46%);
  opacity: 0; transition: opacity .32s var(--ease);
}
.gal-item:hover img { transform: scale(1.06); }
.gal-item:hover::after { opacity: 1; }
.gal-zoom {
  position: absolute; right: 10px; bottom: 10px; z-index: 2;
  width: 32px; height: 32px; border-radius: 50%;
  display: grid; place-items: center;
  background: rgba(255,255,255,.94); color: var(--ink);
  opacity: 0; transform: translateY(6px);
  transition: opacity .3s var(--ease), transform .3s var(--ease);
}
.gal-item:hover .gal-zoom { opacity: 1; transform: none; }

/* 工程分组区块 */
.proj-block { padding-block: clamp(38px, 4.6vw, 62px); border-top: 1px solid var(--line-l); }
.proj-block:first-of-type { border-top: 0; padding-top: 0; }
.proj-block-head { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 26px; }
.proj-block-head h2 { font-size: clamp(1.35rem, 2.1vw, 1.75rem); }
.proj-block-head .proj-meta { margin-top: 10px; }

/* Lightbox */
.lightbox {
  position: fixed; inset: 0; z-index: 200;
  display: none; place-items: center;
  background: rgba(6,10,15,.96); backdrop-filter: blur(8px);
  padding: 20px;
}
.lightbox.is-open { display: grid; }
.lightbox img { max-width: min(1400px, 94vw); max-height: 84vh; border-radius: var(--r); object-fit: contain; }
.lb-cap { margin-top: 14px; text-align: center; color: var(--mist); font-size: .88rem; }
.lb-btn {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 50px; height: 50px; border-radius: 50%;
  display: grid; place-items: center; color: #fff;
  background: rgba(255,255,255,.10); border: 1px solid var(--line-d2);
  transition: background-color .2s var(--ease);
}
.lb-btn:hover { background: rgba(255,255,255,.22); }
.lb-prev { left: 18px; } .lb-next { right: 18px; }
.lb-close { position: absolute; top: 18px; right: 18px; width: 46px; height: 46px; border-radius: 50%;
  display: grid; place-items: center; color: #fff; background: rgba(255,255,255,.10); border: 1px solid var(--line-d2); }
.lb-close:hover { background: rgba(255,255,255,.22); }
.lb-num { position: absolute; top: 26px; left: 24px; color: var(--mist); font-size: .84rem; font-weight: 600; }

/* ==========================================================================
   Forms
   ========================================================================== */
.form-card { background: #fff; border: 1px solid var(--line-l); border-radius: var(--r-lg); padding: clamp(26px, 3.4vw, 44px); box-shadow: var(--sh-1); }
.field-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field--full { grid-column: 1 / -1; }
.field label { font-size: .87rem; font-weight: 700; color: #2B3B4B; }
.field label .req { color: var(--red); }
.field input, .field select, .field textarea {
  width: 100%; padding: 13px 15px; font: inherit; font-size: .95rem;
  color: #1B2733; background: var(--paper-2);
  border: 1.5px solid var(--line-l); border-radius: var(--r-sm);
  transition: border-color .2s var(--ease), background-color .2s var(--ease), box-shadow .2s var(--ease);
}
.field textarea { resize: vertical; min-height: 128px; line-height: 1.6; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; background: #fff; border-color: var(--blue-2);
  box-shadow: 0 0 0 3px rgba(70,120,160,.16);
}
.field select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%237C8FA1' stroke-width='2.5' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 14px center; padding-right: 40px; }
.radio-row { display: flex; flex-wrap: wrap; gap: 10px; }
.radio-chip { position: relative; }
.radio-chip input { position: absolute; opacity: 0; width: 0; height: 0; }
.radio-chip span {
  display: block; padding: 11px 20px; border-radius: 100px; cursor: pointer;
  border: 1.5px solid var(--line-l2); font-size: .89rem; font-weight: 600; color: #4E6072;
  transition: all .2s var(--ease);
}
.radio-chip input:checked + span { background: var(--ink); border-color: var(--ink); color: #fff; }
.radio-chip input:focus-visible + span { outline: 2px solid var(--blue-hi); outline-offset: 2px; }

/* ---------- 附件上传 ---------- */
.dropzone {
  position: relative; display: block;
  border: 2px dashed var(--line-l2); border-radius: var(--r);
  background: var(--paper-2); padding: 26px 20px; text-align: center;
  transition: border-color .2s var(--ease), background-color .2s var(--ease);
  cursor: pointer;
}
.dropzone:hover, .dropzone.is-over { border-color: var(--blue-2); background: #EEF4F9; }
.dropzone.is-over { border-style: solid; }
.dropzone input[type=file] {
  position: absolute; inset: 0; width: 100%; height: 100%;
  opacity: 0; cursor: pointer;
}
.dropzone input[type=file]:focus-visible + .dz-inner { outline: 2px solid var(--blue-hi); outline-offset: 4px; border-radius: 6px; }
.dz-ico {
  display: inline-grid; place-items: center; width: 44px; height: 44px;
  border-radius: 11px; color: #fff; margin-bottom: 10px;
  background: linear-gradient(140deg, var(--blue) 0%, var(--blue-2) 100%);
  box-shadow: 0 5px 14px rgba(30,80,110,.26);
}
.dz-main { font-size: .95rem; color: #3B4C5E; }
.dz-main strong { color: var(--blue); }
.dz-hint { margin-top: 6px; font-size: .82rem; color: var(--steel); }

.dz-list { margin-top: 12px; display: grid; gap: 8px; }
.dz-item {
  display: flex; align-items: center; gap: 11px;
  padding: 10px 12px; border: 1px solid var(--line-l); border-radius: var(--r-sm);
  background: #fff; font-size: .88rem;
}
.dz-item .dz-fi { color: var(--blue-2); flex: none; }
.dz-item .dz-nm { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 600; color: #2B3B4B; }
.dz-item .dz-sz { color: var(--steel); font-size: .8rem; flex: none; }
.dz-item .dz-rm {
  flex: none; width: 26px; height: 26px; border-radius: 50%;
  display: grid; place-items: center; color: var(--steel);
  transition: background-color .18s var(--ease), color .18s var(--ease);
}
.dz-item .dz-rm:hover { background: #FBE9EA; color: var(--red); }
.dz-item.is-bad { border-color: #F0C2C6; background: #FDF4F5; }
.dz-item.is-bad .dz-nm { color: var(--red); }
.dz-err { margin-top: 8px; font-size: .84rem; color: var(--red); font-weight: 600; }

.form-note { margin-top: 16px; font-size: .84rem; color: var(--steel); }
.form-card .btn { margin-top: 8px; }

/* 联系信息卡 */
.contact-list { display: grid; gap: 2px; border-radius: var(--r-lg); overflow: hidden; }
.contact-row { display: flex; gap: 16px; padding: 22px 24px; background: var(--ink-2); }
.contact-row .c-ico { width: 40px; height: 40px; border-radius: 10px; flex: none; display: grid; place-items: center;
  background: rgba(111,163,201,.14); color: var(--blue-hi); }
.contact-row h4 { font-size: .8rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--steel); }
.contact-row .c-val { margin-top: 7px; font-size: 1.02rem; font-weight: 700; color: #fff; line-height: 1.5; }
.contact-row .c-val a { display: block; }
.contact-row .c-val a:hover { color: var(--blue-hi); }
.contact-row .c-sub { margin-top: 5px; font-size: .86rem; color: var(--mist); }

/* ==========================================================================
   CTA band
   ========================================================================== */
.cta-band { position: relative; overflow: hidden; background: var(--ink); color: #fff; }
.cta-band::after {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(90% 130% at 82% 20%, rgba(70,120,160,.34), transparent 60%),
              radial-gradient(70% 100% at 6% 90%, rgba(194,30,43,.20), transparent 62%);
}
.cta-band .wrap { position: relative; z-index: 1; }
.cta-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 30px; }
.cta-inner .cta-copy { max-width: 620px; }
.cta-inner h2 { margin-top: 14px; }
.cta-inner p { margin-top: 14px; }

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer { background: var(--ink); color: var(--mist); padding-block: clamp(50px, 6vw, 76px) 0; }
.foot-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 40px; }
.foot-brand img { width: 186px; }
/* 页脚同为深色，同样使用深色背景版 logo，无底色 */
.foot-brand a.foot-logo { display: inline-flex; }
.foot-brand p { margin-top: 18px; font-size: .92rem; line-height: 1.7; max-width: 330px; }
.foot-col h4 { font-size: .78rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; color: #fff; }
.foot-col ul { margin-top: 18px; display: grid; gap: 11px; }
.foot-col a { font-size: .92rem; transition: color .2s var(--ease); }
.foot-col a:hover { color: #fff; }
.foot-phone { display: grid; gap: 8px; margin-top: 18px; }
.foot-phone a { font-size: 1.04rem; font-weight: 700; color: #fff; }
.foot-phone a:hover { color: var(--blue-hi); }
.foot-mail { margin-top: 12px; display: grid; gap: 7px; }
.foot-mail a {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: .9rem; font-weight: 600; color: var(--mist);
  transition: color .2s var(--ease);
  word-break: break-all;
}
.foot-mail a svg { color: var(--blue-hi); flex: none; }
.foot-mail a:hover { color: #fff; }
.foot-mail a:hover svg { color: var(--red-hi); }
.foot-areas { margin-top: 14px; font-size: .88rem; line-height: 1.7; }
.foot-bottom {
  margin-top: clamp(40px, 5vw, 56px); padding-block: 24px;
  border-top: 1px solid var(--line-d);
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 14px;
  font-size: .84rem;
}
.foot-bottom nav { display: flex; flex-wrap: wrap; gap: 20px; }

/* ==========================================================================
   Reveal on scroll
   ========================================================================== */
.rv { opacity: 0; transform: translateY(26px); transition: opacity .8s var(--ease-out), transform .8s var(--ease-out); }
.rv.in { opacity: 1; transform: none; }
.rv-d1 { transition-delay: .08s; } .rv-d2 { transition-delay: .16s; }
.rv-d3 { transition-delay: .24s; } .rv-d4 { transition-delay: .32s; }

/* ==========================================================================
   Responsive
   ========================================================================== */

/* 大桌面收窄 */
/* logo 按导航高度等比缩放；下面几档是为了放大后仍不挤爆导航 */
@media (max-width: 1366px) {
  .brand img { height: 46px; }
  .site-header.is-solid .brand img { height: 42px; }
}
/* 1280px 以下放不下导航里的电话按钮（页脚与移动端底部导航仍有电话入口） */
@media (max-width: 1280px) {
  .nav-phone { display: none; }
}
@media (max-width: 1180px) {
  .nav-link { padding: 10px 10px; font-size: .85rem; }
  .brand img, .site-header.is-solid .brand img { height: 44px; }
  /* CTA 文案是「Request an Estimate」，比旧文案长，这一档就要换短版，否则导航被挤爆 */
  .q-long  { display: none; }
  .q-short { display: inline; }
}

@media (max-width: 1120px) {
  .brand img, .site-header.is-solid .brand img { height: 42px; }
}

/* 平板：紧凑导航。要求是菜单项必须全部可见，因此收紧 logo / 字号 / 内距，
   并把 CTA 文案换成短版，避免右侧按钮被视口截断。 */
@media (max-width: 1023px) and (min-width: 768px) {
  :root { --nav-h: 64px; }
  .nav-inner { gap: 6px; padding-inline: 14px; }
  .brand img, .site-header.is-solid .brand img { height: 38px; }
  .nav { gap: 0; margin-left: 8px; }
  .nav-link { padding: 7px 6px; font-size: .755rem; letter-spacing: -.012em; }
  .nav-link[aria-current="page"]::after { left: 6px; right: 6px; bottom: 1px; }
  .nav-link .caret { width: 11px; height: 11px; }
  .nav-cta { margin-left: 4px; }
  .nav-quote { padding: 8px 13px; font-size: .78rem; }
  .q-long { display: none; }
  .q-short { display: inline; }
  .dropdown { min-width: 236px; }
  .card-grid--4 { grid-template-columns: repeat(2, 1fr); }
  .card-grid--3 { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .foot-grid { grid-template-columns: repeat(2, 1fr); gap: 34px; }
  /* 表单与正文+侧栏在平板宽度下并排会过窄，改单列 */
  .split--form, .split--main { grid-template-columns: 1fr; }
}

/* 移动端 */
@media (max-width: 767px) {
  :root { --nav-h: var(--nav-h-sm); --gut: 18px; }
  body { font-size: 16px; padding-bottom: var(--bottom-nav-h); }

  .site-header { height: var(--nav-h-sm); }
  .site-header.is-solid { height: var(--nav-h-sm); }
  .brand img, .site-header.is-solid .brand img { height: 44px; }
  .nav, .nav-cta { display: none; }
  .burger { display: inline-flex; }
  .bottom-nav { display: block; }

  .hero { min-height: 100svh; }
  .hero-inner { padding-block: calc(var(--nav-h-sm) + 18px) 30px; }
  .hero .eyebrow { font-size: .67rem; letter-spacing: .13em; }
  .hero h1 { font-size: clamp(2.05rem, 8.6vw, 2.6rem); margin-top: 14px; }
  .hero-sub { margin-top: 16px; font-size: .97rem; line-height: 1.62; }
  .hero-badges { gap: 8px 18px; margin-top: 22px; padding-top: 16px; }
  .hero-badges li { font-size: .79rem; gap: 7px; }
  .hero-badges svg { width: 15px; height: 15px; }
  .hero .btn-row { margin-top: 22px; gap: 10px; }
  .hero .btn { flex: 1 1 100%; padding: 14px 24px; }
  .scroll-hint { display: none; }

  /* 手机端视频完整显示，不裁边，比例不合处深色补边。
     靠上放置，让下方文字落在纯深色区域，可读性最好。 */
  .hero-media { background: var(--ink); }
  .hero-media video, .hero-media img.hero-fallback {
    object-fit: contain; object-position: center 16%;
  }

  .page-hero { padding-block: calc(var(--nav-h-sm) + 34px) 44px; }

  .card-grid, .card-grid--2, .card-grid--3, .card-grid--4 { grid-template-columns: 1fr; gap: 16px; }
  .entry-card { min-height: 250px; padding: 24px; }

  .split, .split--main, .split--form { grid-template-columns: 1fr; gap: 26px; }
  .split--rev .split-media { order: 0; }
  .split-media { min-height: 0; aspect-ratio: 4/3; width: 100%; }

  .stats { grid-template-columns: repeat(2, 1fr); }
  .stat { padding: 24px 14px; }

  .gallery { grid-template-columns: repeat(2, 1fr); gap: 10px; }

  .field-grid { grid-template-columns: 1fr; gap: 15px; }
  .form-card .btn { width: 100%; }

  .cta-inner { gap: 22px; }
  .cta-inner .btn-row { width: 100%; }
  .cta-inner .btn { flex: 1 1 100%; }

  .foot-grid { grid-template-columns: 1fr; gap: 32px; }
  .foot-bottom { flex-direction: column; align-items: flex-start; }
  .foot-bottom nav { gap: 4px 18px; }

  /* 触摸目标：移动端所有可点链接至少 44px 高（Apple HIG）。
     .brand 自带 9px 内边距 + 24px logo，已满足，无需额外覆盖。 */
  .foot-col ul { gap: 0; }
  .foot-col a,
  .foot-bottom nav a,
  .foot-mail a,
  .foot-phone a {
    display: inline-flex; align-items: center; min-height: 44px;
  }
  .crumbs { gap: 4px 8px; }
  .crumbs a, .crumbs em { display: inline-flex; align-items: center; min-height: 40px; }
  .drawer .d-sub a { min-height: 44px; display: flex; align-items: center; }
  .drawer-meta a { display: inline-flex; align-items: center; min-height: 44px; }
  /* 电话/邮箱是主要转化点，触摸区域必须足够大 */
  .contact-row .c-val a { display: flex; align-items: center; min-height: 44px; }

  .lb-btn { width: 42px; height: 42px; }
  .lb-prev { left: 8px; } .lb-next { right: 8px; }
  .lightbox img { max-height: 74vh; }
}

/* 超小屏：logo 略收并收紧内距，避免与「菜单」按钮相撞 */
@media (max-width: 380px) {
  :root { --gut: 14px; }
  .brand img, .site-header.is-solid .brand img { height: 40px; }
  .burger { padding: 8px 10px; gap: 7px; }
}

@media (max-width: 400px) {
  .gallery { grid-template-columns: 1fr; }
  .bottom-nav a { font-size: .6rem; }
  .hero h1 { font-size: 2.05rem; }
}

/* 尊重系统减少动效设置（首屏视频/轮播除外，见 JS） */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .rv { opacity: 1; transform: none; transition: none; }
  .hero-copy > * { animation: none; }
  .scroll-hint i { animation: none; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}

/* 打印 */
@media print {
  .site-header, .bottom-nav, .drawer, .hero-media, .scroll-hint, .cta-band { display: none !important; }
  body { padding-bottom: 0; }
}