/* ============================================================
   xxmr.cn · 中安特培 特种作业考培咨询
   base.css —— 全局设计系统：变量 / 重置 / 导航 / 页脚 / 通用组件
   咖啡极简风：深棕 + 奶白 + 浅灰
   ============================================================ */

/* ---------- 设计变量 ---------- */
:root {
  /* 咖啡色阶 */
  --coffee-950: #211610;
  --coffee-900: #2B1D16;
  --coffee-800: #3C2A20;
  --coffee-700: #4E3729;
  --coffee-600: #66492F;
  --coffee-500: #7A5C48;
  --coffee-400: #96755D;
  --latte: #B89B7E;
  --latte-soft: #D3BFA5;
  /* 奶白 / 浅灰 */
  --cream-50: #FBF7F0;
  --cream-100: #F5EDE0;
  --cream-200: #EDE0CC;
  --sand: #E6DAC7;
  --gray-100: #F1F0EB;
  --gray-200: #E4E1D8;
  --gray-300: #CFCAC0;
  --gray-400: #A29A8C;
  --gray-500: #7C7468;
  /* 文字 */
  --ink: #26201A;
  --ink-soft: #4C4137;
  --ink-mute: #8A7F71;
  /* 强调 */
  --gold: #C89B5E;
  --gold-deep: #A97F43;
  --gold-soft: #EBD9BA;
  /* 阴影 */
  --shadow-sm: 0 4px 14px rgba(43, 29, 22, .07);
  --shadow-md: 0 12px 32px rgba(43, 29, 22, .10);
  --shadow-lg: 0 24px 60px rgba(43, 29, 22, .16);
  /* 其他 */
  --radius-s: 10px;
  --radius: 18px;
  --radius-l: 26px;
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, -apple-system, sans-serif;
  --header-h: 74px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* ---------- 重置 ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  font-family: var(--font);
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--ink);
  background: var(--cream-50);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; border: 0; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: 0; background: none; color: inherit; }
input, select, textarea { font-family: inherit; font-size: 1rem; }
h1, h2, h3, h4, h5 { line-height: 1.3; font-weight: 700; color: var(--coffee-900); }
::selection { background: var(--gold); color: #fff; }

.container { width: min(1200px, 92%); margin-inline: auto; }

/* 通用区块 */
.section { padding: 86px 0; position: relative; }
.section.tight { padding: 56px 0; }
.bg-cream { background: var(--cream-50); }
.bg-milk { background: #FFFDF9; }
.bg-sand { background: var(--cream-100); }
.bg-coffee { background: var(--coffee-900); color: var(--cream-100); }
.bg-coffee h1, .bg-coffee h2, .bg-coffee h3 { color: var(--cream-50); }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 1000;
  height: var(--header-h);
  background: rgba(251, 247, 240, .82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(43, 29, 22, .06);
  transition: background .35s var(--ease), box-shadow .35s var(--ease), height .35s var(--ease);
}
.site-header.is-scrolled {
  background: rgba(251, 247, 240, .96);
  box-shadow: 0 10px 30px rgba(43, 29, 22, .08);
  height: 64px;
}
.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

/* 品牌 */
.brand { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand .logo-mark { width: 46px; height: 46px; transition: transform .4s var(--ease); }
.brand:hover .logo-mark { transform: rotate(-6deg) scale(1.04); }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-name { font-size: 21px; font-weight: 800; letter-spacing: 2px; color: var(--coffee-900); }
.brand-sub { font-size: 11px; color: var(--coffee-500); letter-spacing: 1.6px; margin-top: 3px; }

/* 导航 */
.main-nav { display: flex; align-items: center; gap: 4px; }
.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 9px 13px;
  font-size: 14.5px;
  color: var(--ink-soft);
  border-radius: 8px;
  transition: color .25s, background .25s;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 13px; right: 13px; bottom: 3px;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), var(--latte));
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s var(--ease);
}
.nav-link:hover, .nav-link.active { color: var(--coffee-800); background: rgba(200, 155, 94, .08); }
.nav-link:hover::after, .nav-link.active::after { transform: scaleX(1); }
.nav-link .caret { font-size: 10px; transition: transform .25s; color: var(--gray-400); }

/* 下拉 */
.nav-drop { position: relative; }
.drop-panel {
  position: absolute;
  top: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 260px;
  padding: 10px;
  background: #FFFDF9;
  border: 1px solid var(--sand);
  border-radius: 14px;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: opacity .28s var(--ease), transform .28s var(--ease), visibility .28s;
}
.drop-panel::before {
  content: "";
  position: absolute;
  top: -7px; left: 50%;
  transform: translateX(-50%) rotate(45deg);
  width: 14px; height: 14px;
  background: #FFFDF9;
  border-left: 1px solid var(--sand);
  border-top: 1px solid var(--sand);
}
.drop-panel a {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 9px 12px;
  font-size: 13.5px;
  color: var(--ink-soft);
  border-radius: 8px;
  transition: background .2s, color .2s, padding-left .2s;
}
.drop-panel a::before {
  content: "";
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--latte);
  flex-shrink: 0;
}
.drop-panel a:hover { background: var(--cream-100); color: var(--coffee-800); padding-left: 16px; }
.nav-drop:hover .drop-panel, .nav-drop:focus-within .drop-panel {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.nav-drop:hover .caret { transform: rotate(180deg); }
.drop-panel .dp-title {
  padding: 6px 12px 4px;
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--gray-400);
  text-transform: uppercase;
}

/* 预约按钮 */
.nav-cta {
  margin-left: 10px;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(120deg, var(--coffee-700), var(--coffee-500));
  border-radius: 999px;
  box-shadow: 0 6px 16px rgba(78, 55, 41, .28);
  transition: transform .25s var(--ease), box-shadow .25s, filter .25s;
  white-space: nowrap;
}
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 10px 22px rgba(78, 55, 41, .34); filter: brightness(1.06); }

/* 汉堡按钮 */
.menu-btn {
  display: none;
  width: 44px; height: 44px;
  border-radius: 10px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--sand);
  background: var(--cream-50);
}
.menu-btn span {
  display: block;
  width: 20px; height: 2px;
  margin: 3px auto;
  background: var(--coffee-800);
  border-radius: 2px;
  transition: transform .3s var(--ease), opacity .3s;
}
.menu-btn[aria-expanded="true"] span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.menu-btn[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-btn[aria-expanded="true"] span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* 移动端全屏菜单 */
.m-menu {
  position: fixed;
  inset: 0;
  z-index: 990;
  background: rgba(33, 22, 16, .97);
  backdrop-filter: blur(8px);
  padding: calc(var(--header-h) + 24px) 7% 48px;
  overflow-y: auto;
  opacity: 0;
  visibility: hidden;
  transition: opacity .35s var(--ease), visibility .35s;
}
.m-menu.open { opacity: 1; visibility: visible; }
.m-menu .m-group { border-bottom: 1px solid rgba(251, 247, 240, .1); padding: 14px 0; }
.m-menu .m-label {
  font-size: 12px;
  letter-spacing: 3px;
  color: var(--gold);
  margin-bottom: 10px;
}
.m-menu .m-links { display: grid; grid-template-columns: repeat(2, 1fr); gap: 4px 12px; }
.m-menu a {
  display: block;
  padding: 9px 4px;
  color: var(--cream-100);
  font-size: 15px;
  border-radius: 8px;
  transition: background .2s, color .2s;
}
.m-menu a:hover { background: rgba(251, 247, 240, .08); color: var(--gold-soft); }
.m-menu .m-cta {
  margin-top: 26px;
  display: block;
  text-align: center;
  padding: 14px;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 700;
  color: var(--coffee-900);
  background: linear-gradient(120deg, var(--gold), var(--latte-soft));
}

/* ---------- 面包屑 ---------- */
.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--gray-500);
  padding: 14px 0;
}
.crumbs a { color: var(--coffee-500); transition: color .2s; }
.crumbs a:hover { color: var(--gold-deep); }
.crumbs .sep { color: var(--gray-300); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  transition: transform .28s var(--ease), box-shadow .28s, background .28s, color .28s;
}
.btn svg { width: 17px; height: 17px; flex-shrink: 0; }
.btn-gold {
  color: #fff;
  background: linear-gradient(120deg, var(--gold-deep), var(--gold));
  box-shadow: 0 10px 24px rgba(169, 127, 67, .32);
}
.btn-gold:hover { transform: translateY(-3px); box-shadow: 0 16px 32px rgba(169, 127, 67, .4); }
.btn-dark {
  color: var(--cream-50);
  background: linear-gradient(120deg, var(--coffee-800), var(--coffee-600));
  box-shadow: 0 10px 24px rgba(60, 42, 32, .3);
}
.btn-dark:hover { transform: translateY(-3px); box-shadow: 0 16px 34px rgba(60, 42, 32, .38); }
.btn-line {
  color: var(--coffee-700);
  border: 1.5px solid var(--latte);
  background: transparent;
}
.btn-line:hover { background: var(--cream-100); transform: translateY(-3px); }
.btn-light {
  color: var(--coffee-900);
  background: var(--cream-50);
  box-shadow: 0 8px 20px rgba(0, 0, 0, .18);
}
.btn-light:hover { transform: translateY(-3px); }
.btn-sm { padding: 9px 18px; font-size: 13.5px; }
.btn-lg { padding: 16px 36px; font-size: 16px; }
.btn-block { width: 100%; }

/* ---------- 徽标 / 眉标 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--gold-deep);
  text-transform: uppercase;
}
.eyebrow::before { content: ""; width: 26px; height: 2px; background: var(--gold); border-radius: 2px; }
.eyebrow.center { justify-content: center; }
.eyebrow.center::after { content: ""; width: 26px; height: 2px; background: var(--gold); border-radius: 2px; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  font-size: 12px;
  border-radius: 999px;
  border: 1px solid var(--sand);
  color: var(--coffee-500);
  background: var(--cream-100);
}
.badge.hot { color: #B3541E; border-color: #EDC9A8; background: #FBF0E4; }
.badge.gold { color: var(--gold-deep); border-color: var(--gold-soft); background: var(--gold-soft); }
.badge svg { width: 12px; height: 12px; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 16px;
  font-size: 13.5px;
  border-radius: 999px;
  border: 1px solid var(--sand);
  background: var(--cream-50);
  color: var(--ink-soft);
  transition: all .25s var(--ease);
}
.chip:hover { border-color: var(--gold); color: var(--coffee-700); transform: translateY(-2px); box-shadow: var(--shadow-sm); }

/* ---------- 区块标题 ---------- */
.sec-head { max-width: 720px; margin-bottom: 46px; }
.sec-head.center { margin-inline: auto; text-align: center; }
.sec-head h2 { font-size: clamp(26px, 3.2vw, 38px); letter-spacing: 1px; margin: 14px 0 14px; }
.sec-head p { color: var(--ink-soft); font-size: 15.5px; }
.sec-head .gold-line {
  width: 56px; height: 4px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--gold), var(--latte-soft));
  margin-top: 6px;
}
.sec-head.center .gold-line { margin-inline: auto; }

/* ---------- 页脚 ---------- */
.site-footer {
  background: var(--coffee-950);
  color: rgba(251, 247, 240, .72);
  padding: 72px 0 0;
  position: relative;
  overflow: hidden;
}
.site-footer::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--coffee-950), var(--gold), var(--coffee-950));
  opacity: .8;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 44px;
  padding-bottom: 48px;
}
.footer-col h4 {
  color: var(--cream-50);
  font-size: 15px;
  letter-spacing: 2px;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 10px;
}
.footer-col h4::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 26px; height: 2px;
  background: var(--gold);
}
.footer-intro { font-size: 13.5px; line-height: 1.9; color: rgba(251, 247, 240, .6); margin: 16px 0 18px; }
.footer-col ul li { margin-bottom: 9px; }
.footer-col ul a {
  font-size: 13.5px;
  color: rgba(251, 247, 240, .66);
  transition: color .2s, padding-left .2s;
}
.footer-col ul a:hover { color: var(--gold-soft); padding-left: 5px; }
.footer-contact li { display: flex; align-items: flex-start; gap: 10px; font-size: 13.5px; margin-bottom: 12px; }
.footer-contact svg { width: 16px; height: 16px; flex-shrink: 0; margin-top: 4px; color: var(--gold); }
.footer-contact a { color: rgba(251, 247, 240, .82); }
.footer-contact a:hover { color: var(--gold-soft); }
.footer-bottom {
  border-top: 1px solid rgba(251, 247, 240, .1);
  padding: 20px 0 26px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  justify-content: space-between;
  font-size: 12.5px;
  color: rgba(251, 247, 240, .45);
}
.footer-bottom a { color: rgba(251, 247, 240, .55); }
.footer-bottom a:hover { color: var(--gold-soft); }
.footer-brand { display: flex; align-items: center; gap: 12px; }
.footer-brand img { width: 42px; height: 42px; }
.footer-brand .fb-name { font-size: 19px; font-weight: 800; letter-spacing: 2px; color: var(--cream-50); }
.footer-brand .fb-sub { font-size: 11px; letter-spacing: 1.6px; color: var(--gold); }

/* ---------- 滚动渐入 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .8s var(--ease), transform .8s var(--ease);
  will-change: opacity, transform;
}
[data-reveal="left"] { transform: translateX(-40px); }
[data-reveal="right"] { transform: translateX(40px); }
[data-reveal="zoom"] { transform: scale(.92); }
[data-reveal].revealed { opacity: 1; transform: none; }
.delay-1 { transition-delay: .12s; }
.delay-2 { transition-delay: .24s; }
.delay-3 { transition-delay: .36s; }
.delay-4 { transition-delay: .48s; }

/* ---------- 回到顶部 ---------- */
.to-top {
  position: fixed;
  right: 22px; bottom: 92px;
  z-index: 900;
  width: 46px; height: 46px;
  border-radius: 14px;
  background: var(--coffee-800);
  color: var(--cream-50);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
  transition: all .35s var(--ease);
}
.to-top.show { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { background: var(--coffee-600); transform: translateY(-3px); }
.to-top svg { width: 18px; height: 18px; }

/* ---------- 浮动客服条 ---------- */
.float-bar {
  position: fixed;
  right: 22px; bottom: 26px;
  z-index: 900;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.float-bar a {
  width: 52px; height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: var(--shadow-lg);
  transition: transform .3s var(--ease);
  position: relative;
}
.float-bar a:hover { transform: scale(1.1); }
.float-bar .fb-tel { background: linear-gradient(135deg, var(--gold-deep), var(--gold)); }
.float-bar .fb-form { background: linear-gradient(135deg, var(--coffee-800), var(--coffee-600)); }
.float-bar svg { width: 22px; height: 22px; }
.float-bar a .tip {
  position: absolute;
  right: 62px;
  top: 50%;
  transform: translateY(-50%) translateX(6px);
  padding: 6px 12px;
  font-size: 12.5px;
  white-space: nowrap;
  border-radius: 8px;
  background: var(--coffee-900);
  color: var(--cream-50);
  opacity: 0;
  visibility: hidden;
  transition: all .25s var(--ease);
}
.float-bar a:hover .tip { opacity: 1; visibility: visible; transform: translateY(-50%) translateX(0); }

/* ---------- 表单 ---------- */
.form-card {
  background: #FFFDF9;
  border: 1px solid var(--sand);
  border-radius: var(--radius-l);
  padding: 34px;
  box-shadow: var(--shadow-md);
}
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { display: flex; flex-direction: column; gap: 7px; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: 13.5px; font-weight: 600; color: var(--coffee-700); }
.field label .req { color: #B3541E; }
.field input, .field select, .field textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--gray-200);
  border-radius: 10px;
  background: var(--cream-50);
  color: var(--ink);
  font-size: 14.5px;
  transition: border-color .25s, box-shadow .25s, background .25s;
}
.field textarea { min-height: 120px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--gold);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(200, 155, 94, .15);
}
.form-note { font-size: 12.5px; color: var(--gray-500); margin-top: 12px; display: flex; gap: 6px; align-items: flex-start; }
.form-ok {
  display: none;
  margin-top: 14px;
  padding: 13px 16px;
  border-radius: 10px;
  font-size: 14px;
  color: #3F6B4F;
  background: #EAF4EC;
  border: 1px solid #CBE3D0;
}
.form-ok.show { display: block; }

/* ---------- 表格 ---------- */
.tbl-wrap { overflow-x: auto; border-radius: var(--radius); box-shadow: var(--shadow-sm); }
.tbl { width: 100%; border-collapse: collapse; background: #FFFDF9; min-width: 620px; }
.tbl th {
  background: var(--coffee-800);
  color: var(--cream-50);
  font-size: 13.5px;
  font-weight: 600;
  text-align: left;
  padding: 13px 16px;
  letter-spacing: .5px;
}
.tbl td { padding: 13px 16px; font-size: 14px; color: var(--ink-soft); border-bottom: 1px solid var(--gray-200); }
.tbl tr:nth-child(even) td { background: var(--cream-100); }
.tbl tr:hover td { background: var(--gold-soft); }

/* ---------- 手风琴 ---------- */
.acc { display: flex; flex-direction: column; gap: 12px; }
.acc-item {
  background: #FFFDF9;
  border: 1px solid var(--sand);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow .3s;
}
.acc-item.open { box-shadow: var(--shadow-md); }
.acc-head {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 18px 22px;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--coffee-800);
  text-align: left;
}
.acc-head .acc-num {
  width: 30px; height: 30px;
  flex-shrink: 0;
  border-radius: 9px;
  background: var(--cream-100);
  color: var(--gold-deep);
  font-size: 13px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
}
.acc-head .acc-icon {
  width: 30px; height: 30px;
  flex-shrink: 0;
  border-radius: 50%;
  border: 1.5px solid var(--sand);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform .3s var(--ease), background .3s, border-color .3s;
}
.acc-item.open .acc-icon { transform: rotate(45deg); background: var(--gold-soft); border-color: var(--gold); }
.acc-body { max-height: 0; overflow: hidden; transition: max-height .45s var(--ease); }
.acc-body p { padding: 0 22px 20px 22px; font-size: 14.5px; color: var(--ink-soft); }

/* ---------- 标签页 ---------- */
.tabs-nav { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 28px; }
.tab-btn {
  padding: 10px 20px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-soft);
  border: 1.5px solid var(--gray-200);
  background: var(--cream-50);
  transition: all .25s var(--ease);
}
.tab-btn:hover { border-color: var(--latte); }
.tab-btn.active { color: #fff; background: var(--coffee-700); border-color: var(--coffee-700); }
.tab-pane { display: none; }
.tab-pane.active { display: block; animation: fadeUp .5s var(--ease); }

/* ---------- 动画 ---------- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: none; }
}
@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}
@keyframes pulseDot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .45; transform: scale(.8); }
}
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}
@keyframes shimmer {
  from { background-position: -200% 0; }
  to { background-position: 200% 0; }
}

/* ---------- 工具类 ---------- */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.mt-16 { margin-top: 16px; } .mt-24 { margin-top: 24px; } .mt-40 { margin-top: 40px; }
.text-gold { color: var(--gold-deep); }
.text-center { text-align: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .main-nav { display: none; }
  .menu-btn { display: flex; }
  .nav-cta { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .section { padding: 62px 0; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .brand-name { font-size: 18px; }
  .brand-sub { font-size: 10px; }
  .brand .logo-mark { width: 40px; height: 40px; }
  .float-bar a { width: 46px; height: 46px; }
  .to-top { right: 14px; bottom: 86px; }
}
@media (max-width: 480px) {
  .grid-4 { grid-template-columns: 1fr; }
  .m-menu .m-links { grid-template-columns: 1fr; }
  .form-card { padding: 24px 18px; }
}

/* ---------- 无障碍 ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
  [data-reveal] { opacity: 1; transform: none; }
}