/* ==========================================================================
   宏基建筑劳务 —— 全站样式
   配色：工程黄 (强调) + 深板岩灰 (稳重) + 纯白 (留白)
   ========================================================================== */

:root {
  /* 主色：工程黄 */
  --yellow: #f5a623;
  --yellow-dark: #d98c0a;
  --yellow-light: #ffc95c;

  /* 中性色 */
  --ink: #14181d;        /* 近黑，标题 */
  --ink-2: #2b3239;      /* 深灰，正文标题 */
  --body: #4a5560;       /* 正文 */
  --muted: #78828d;      /* 次要文字 */
  --line: #e3e7ec;       /* 分割线 */
  --bg: #ffffff;
  --bg-soft: #f6f8fa;    /* 浅底区块 */
  --bg-dark: #1b2128;    /* 深色区块 */

  /* 尺寸 */
  --wrap: 1180px;
  --radius: 10px;
  --radius-lg: 16px;

  --shadow-sm: 0 1px 3px rgba(20, 24, 29, .06), 0 1px 2px rgba(20, 24, 29, .04);
  --shadow: 0 4px 16px rgba(20, 24, 29, .07);
  --shadow-lg: 0 12px 40px rgba(20, 24, 29, .11);

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

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

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

body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB",
               "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--body);
  background: var(--bg);
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }

a { color: inherit; text-decoration: none; transition: color .2s var(--ease); }

ul, ol { margin: 0; padding: 0; list-style: none; }

h1, h2, h3, h4 {
  margin: 0 0 .6em;
  color: var(--ink);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -.01em;
}

h1 { font-size: clamp(1.9rem, 4.2vw, 3.1rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); }
h3 { font-size: clamp(1.1rem, 1.8vw, 1.4rem); }
h4 { font-size: 1.05rem; }

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

button { font: inherit; cursor: pointer; border: 0; background: none; }

/* --------------------------------------------------------------------------
   布局工具类
   -------------------------------------------------------------------------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 88px 0; }
.section--soft { background: var(--bg-soft); }
.section--dark { background: var(--bg-dark); color: #c3ccd5; }
.section--dark h2, .section--dark h3 { color: #fff; }

/* 区块标题 */
.sec-head { max-width: 720px; margin-bottom: 48px; }
.sec-head--center { margin-left: auto; margin-right: auto; text-align: center; }

.eyebrow {
  display: inline-block;
  margin-bottom: 14px;
  padding: 5px 13px;
  border-radius: 999px;
  background: rgba(245, 166, 35, .13);
  color: var(--yellow-dark);
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .07em;
}
.section--dark .eyebrow {
  background: rgba(245, 166, 35, .16);
  color: var(--yellow-light);
}

.sec-head p { color: var(--muted); font-size: 1.03rem; margin-top: 12px; }
.section--dark .sec-head p { color: #94a1ad; }

/* 黄条装饰 */
.rule {
  width: 52px; height: 4px;
  margin: 0 0 22px;
  border-radius: 2px;
  background: var(--yellow);
}
.sec-head--center .rule { margin-left: auto; margin-right: auto; }

/* --------------------------------------------------------------------------
   按钮
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 14px 30px;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.2;
  white-space: nowrap;
  cursor: pointer;
  transition: transform .18s var(--ease), box-shadow .18s var(--ease),
              background-color .18s var(--ease), color .18s var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: var(--yellow);
  color: #1a1206;
  box-shadow: 0 4px 14px rgba(245, 166, 35, .34);
}
.btn--primary:hover {
  background: var(--yellow-dark);
  box-shadow: 0 8px 24px rgba(245, 166, 35, .42);
}

.btn--ghost {
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255, 255, 255, .5);
}
.btn--ghost:hover { background: rgba(255, 255, 255, .12); border-color: #fff; }

.btn--line {
  background: transparent;
  color: var(--ink);
  border: 1.5px solid var(--line);
}
.btn--line:hover { border-color: var(--yellow); color: var(--yellow-dark); }

.btn--sm { padding: 10px 20px; font-size: .92rem; }

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

/* --------------------------------------------------------------------------
   顶部信息条
   -------------------------------------------------------------------------- */
.topbar {
  background: var(--bg-dark);
  color: #9aa6b2;
  font-size: .86rem;
  padding: 9px 0;
}
.topbar .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.topbar-list { display: flex; gap: 22px; flex-wrap: wrap; }
.topbar-item { display: flex; align-items: center; gap: 7px; }
.topbar-item svg { flex: 0 0 auto; opacity: .8; }
.topbar a:hover { color: var(--yellow-light); }

/* --------------------------------------------------------------------------
   导航
   -------------------------------------------------------------------------- */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .96);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow .25s var(--ease);
}
.header.is-stuck { box-shadow: var(--shadow); }

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 74px;
}

/* Logo */
.logo { display: flex; align-items: center; gap: 12px; flex: 0 0 auto; }
.logo-mark {
  width: 44px; height: 44px;
  flex: 0 0 auto;
  border-radius: 9px;
  background: linear-gradient(140deg, var(--yellow) 0%, var(--yellow-dark) 100%);
  display: grid;
  place-items: center;
  color: #1a1206;
  font-weight: 800;
  font-size: 1.32rem;
  letter-spacing: -.02em;
  box-shadow: 0 3px 10px rgba(245, 166, 35, .3);
}
.logo-text { display: flex; flex-direction: column; line-height: 1.15; }
.logo-name { font-size: 1.12rem; font-weight: 800; color: var(--ink); letter-spacing: .01em; }
.logo-sub { font-size: .7rem; color: var(--muted); letter-spacing: .17em; text-transform: uppercase; }

/* 菜单 */
.nav-menu { display: flex; align-items: center; gap: 4px; }
.nav-link {
  position: relative;
  display: block;
  padding: 9px 15px;
  border-radius: 7px;
  font-size: .96rem;
  font-weight: 500;
  color: var(--ink-2);
}
.nav-link:hover { color: var(--yellow-dark); background: rgba(245, 166, 35, .08); }
.nav-link.is-active { color: var(--yellow-dark); font-weight: 700; }
.nav-link.is-active::after {
  content: "";
  position: absolute;
  left: 15px; right: 15px; bottom: 2px;
  height: 2.5px;
  border-radius: 2px;
  background: var(--yellow);
}

.nav-cta { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
.nav-tel {
  display: flex; flex-direction: column; line-height: 1.2;
  padding-right: 14px; border-right: 1px solid var(--line);
}
.nav-tel-label { font-size: .7rem; color: var(--muted); }
.nav-tel-num { font-size: 1.06rem; font-weight: 800; color: var(--ink); letter-spacing: .01em; }
.nav-tel-num:hover { color: var(--yellow-dark); }

/* 汉堡 */
.burger {
  display: none;
  width: 44px; height: 44px;
  border-radius: 8px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.burger span {
  display: block;
  width: 22px; height: 2.5px;
  border-radius: 2px;
  background: var(--ink);
  transition: transform .3s var(--ease), opacity .2s var(--ease);
}
.burger.is-open span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.burger.is-open span:nth-child(2) { opacity: 0; }
.burger.is-open span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

/* --------------------------------------------------------------------------
   Hero 首屏
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  min-height: 620px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--bg-dark);
  color: #fff;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-bg img { width: 100%; height: 100%; object-fit: cover; }
.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(100deg, rgba(14,17,21,.93) 0%, rgba(14,17,21,.78) 42%, rgba(14,17,21,.42) 100%);
}
.hero .wrap { position: relative; z-index: 1; padding-top: 76px; padding-bottom: 76px; }

.hero-inner { max-width: 660px; }
.hero h1 { color: #fff; margin-bottom: 20px; }
.hero h1 .hl {
  color: var(--yellow);
  position: relative;
  white-space: nowrap;
}
.hero-lead {
  font-size: 1.1rem;
  color: #c3ccd5;
  max-width: 560px;
  margin-bottom: 32px;
}
.hero .btn-row { margin-bottom: 40px; }

/* Hero 数据条 */
.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 40px;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, .16);
}
.hero-stat b {
  display: block;
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--yellow);
  line-height: 1.1;
  letter-spacing: -.02em;
}
.hero-stat b i { font-style: normal; font-size: 1rem; margin-left: 1px; }
.hero-stat span { font-size: .85rem; color: #94a1ad; }

/* --------------------------------------------------------------------------
   信任条
   -------------------------------------------------------------------------- */
.trustbar { background: var(--yellow); color: #1a1206; padding: 15px 0; }
.trustbar .wrap {
  display: flex; flex-wrap: wrap;
  align-items: center; justify-content: center;
  gap: 12px 38px;
  font-size: .93rem; font-weight: 600;
}
.trustbar-item { display: flex; align-items: center; gap: 8px; }
.trustbar-item svg { flex: 0 0 auto; }

/* --------------------------------------------------------------------------
   卡片网格
   -------------------------------------------------------------------------- */
.grid { display: grid; gap: 26px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

/* 业务卡（图文） */
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease),
              border-color .3s var(--ease);
}
.card:hover {
  transform: translateY(-5px);
  border-color: rgba(245, 166, 35, .5);
  box-shadow: var(--shadow-lg);
}
.card-media {
  position: relative;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  background: var(--bg-soft);
}
.card-media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .6s var(--ease);
}
.card:hover .card-media img { transform: scale(1.06); }
.card-media--tall { aspect-ratio: 4 / 5; }

.card-body { padding: 24px 26px 28px; flex: 1; display: flex; flex-direction: column; }
.card-body h3 { margin-bottom: 10px; }
.card-body p { color: var(--body); font-size: .95rem; }

.card-tag {
  position: absolute;
  top: 14px; left: 14px;
  z-index: 2;
  padding: 5px 12px;
  border-radius: 6px;
  background: rgba(20, 24, 29, .82);
  backdrop-filter: blur(4px);
  color: var(--yellow-light);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .03em;
}

/* 能力清单 */
.checklist { margin-top: 14px; display: grid; gap: 9px; }
.checklist li {
  position: relative;
  padding-left: 24px;
  font-size: .92rem;
  color: var(--body);
}
.checklist li::before {
  content: "";
  position: absolute;
  left: 0; top: .55em;
  width: 13px; height: 7px;
  border-left: 2.2px solid var(--yellow-dark);
  border-bottom: 2.2px solid var(--yellow-dark);
  transform: rotate(-45deg);
}

/* 图标卡 */
.icard {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease),
              border-color .3s var(--ease);
}
.icard:hover {
  transform: translateY(-5px);
  border-color: rgba(245, 166, 35, .5);
  box-shadow: var(--shadow-lg);
}
.icard-icon {
  width: 52px; height: 52px;
  border-radius: 12px;
  display: grid; place-items: center;
  background: rgba(245, 166, 35, .14);
  color: var(--yellow-dark);
  margin-bottom: 20px;
}
.icard h3 { font-size: 1.14rem; margin-bottom: 9px; }
.icard p { font-size: .94rem; color: var(--body); }
.section--dark .icard {
  background: rgba(255, 255, 255, .045);
  border-color: rgba(255, 255, 255, .1);
}
.section--dark .icard:hover {
  background: rgba(255, 255, 255, .075);
  border-color: rgba(245, 166, 35, .45);
}
.section--dark .icard p { color: #9aa6b2; }

/* --------------------------------------------------------------------------
   优势（左文右图）
   -------------------------------------------------------------------------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.split-media { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); }
.split-media img { width: 100%; }

/* 编号列表 */
.numlist { display: grid; gap: 26px; margin-top: 30px; }
.numlist li { display: flex; gap: 18px; }
.numlist-num {
  flex: 0 0 auto;
  width: 40px; height: 40px;
  border-radius: 10px;
  background: var(--yellow);
  color: #1a1206;
  display: grid; place-items: center;
  font-weight: 800;
  font-size: 1.05rem;
}
.numlist h4 { margin: 0 0 5px; font-size: 1.06rem; }
.numlist p { font-size: .94rem; margin: 0; }
.section--dark .numlist h4 { color: #fff; }
.section--dark .numlist p { color: #94a1ad; }

/* --------------------------------------------------------------------------
   流程时间线
   -------------------------------------------------------------------------- */
.flow {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  margin-top: 12px;
  counter-reset: step;
}
.flow-step {
  position: relative;
  padding: 30px 22px 26px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-align: center;
}
.flow-step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  display: block;
  font-size: 1.7rem;
  font-weight: 800;
  color: rgba(245, 166, 35, .38);
  line-height: 1;
  margin-bottom: 14px;
  letter-spacing: -.02em;
}
.flow-step h4 { font-size: 1.02rem; margin-bottom: 7px; }
.flow-step p { font-size: .88rem; color: var(--muted); margin: 0; }
/* 连接箭头 */
.flow-step:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 50%; right: -13px;
  width: 6px; height: 6px;
  border-top: 2px solid var(--yellow);
  border-right: 2px solid var(--yellow);
  transform: translateY(-50%) rotate(45deg);
  z-index: 2;
}

/* --------------------------------------------------------------------------
   案例
   -------------------------------------------------------------------------- */
.case {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: block;
  aspect-ratio: 4 / 3;
  background: var(--bg-dark);
}
.case img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .65s var(--ease);
}
.case:hover img { transform: scale(1.07); }
.case::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(12,15,19,.9) 0%, rgba(12,15,19,.35) 45%, rgba(12,15,19,0) 72%);
  transition: opacity .3s var(--ease);
}
.case-body {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  z-index: 2;
  padding: 26px 26px 24px;
  color: #fff;
}
.case-cat {
  display: inline-block;
  margin-bottom: 9px;
  padding: 3px 10px;
  border-radius: 5px;
  background: var(--yellow);
  color: #1a1206;
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .04em;
}
.case-body h3 { color: #fff; font-size: 1.14rem; margin-bottom: 6px; }
.case-meta { font-size: .86rem; color: #b9c3cd; display: flex; gap: 16px; flex-wrap: wrap; }

/* --------------------------------------------------------------------------
   表单
   -------------------------------------------------------------------------- */
.form { display: grid; gap: 18px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }

.field { display: flex; flex-direction: column; gap: 7px; }
.field label { font-size: .9rem; font-weight: 600; color: var(--ink-2); }
.field label .req { color: #d64545; }

.field input, .field select, .field textarea {
  width: 100%;
  padding: 13px 15px;
  border: 1.5px solid var(--line);
  border-radius: 8px;
  font: inherit;
  font-size: .96rem;
  color: var(--ink);
  background: #fff;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.field textarea { resize: vertical; min-height: 118px; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--yellow);
  box-shadow: 0 0 0 3.5px rgba(245, 166, 35, .16);
}
.field input::placeholder, .field textarea::placeholder { color: #a9b3bd; }
.field.has-error input, .field.has-error select, .field.has-error textarea {
  border-color: #d64545;
}
.field-error { font-size: .82rem; color: #d64545; min-height: 1.1em; }

.form-note { font-size: .84rem; color: var(--muted); }
.form-ok {
  padding: 16px 20px;
  border-radius: 8px;
  background: rgba(37, 160, 90, .1);
  border: 1px solid rgba(37, 160, 90, .35);
  color: #1c7a45;
  font-size: .95rem;
  font-weight: 600;
}

.form-fail {
  padding: 16px 20px;
  margin-bottom: 18px;
  border-radius: 8px;
  background: rgba(199, 62, 48, .08);
  border: 1px solid rgba(199, 62, 48, .32);
  color: #a3342a;
  font-size: .95rem;
  font-weight: 600;
  line-height: 1.7;
}

.form-fail a {
  color: #a3342a;
  text-decoration: underline;
  white-space: nowrap;
}

/* ---- 分节表单（quote.html） ---- */
.fset {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 26px 26px 30px;
  margin: 0 0 26px;
  background: #fff;
}
.fset-legend {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 10px 0 0;
  margin-left: -2px;
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--ink);
}
.fset-num {
  display: grid;
  place-items: center;
  width: 32px; height: 32px;
  flex: 0 0 auto;
  border-radius: 9px;
  background: var(--yellow);
  color: #1a1206;
  font-size: .9rem;
  font-weight: 800;
}
.fset > .form-row,
.fset > .field { margin-bottom: 18px; }
.fset > :last-child { margin-bottom: 0 !important; }

/* 复选/单选成组：网格 */
.checkgrid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 10px;
  margin-top: 4px;
}
.chk {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  padding: 11px 13px;
  border: 1.5px solid var(--line);
  border-radius: 8px;
  font-size: .92rem;
  color: var(--ink-2);
  cursor: pointer;
  transition: border-color .18s var(--ease), background-color .18s var(--ease);
  line-height: 1.5;
}
.chk:hover { border-color: rgba(245, 166, 35, .6); background: rgba(245, 166, 35, .05); }
.chk input { flex: 0 0 auto; margin-top: 3px; accent-color: var(--yellow-dark); width: 16px; height: 16px; }
.chk:has(input:checked) {
  border-color: var(--yellow);
  background: rgba(245, 166, 35, .1);
  font-weight: 600;
  color: var(--ink);
}
.chk--consent { border: 0; padding: 0; font-size: .92rem; }
.chk--consent:hover { background: none; }

/* 单选卡片（承包方式） */
.radios { display: grid; gap: 10px; margin-top: 4px; }
.radios--inline { grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }
.rd {
  display: flex;
  align-items: flex-start;
  gap: 11px;
  padding: 14px 16px;
  border: 1.5px solid var(--line);
  border-radius: 9px;
  cursor: pointer;
  transition: border-color .18s var(--ease), background-color .18s var(--ease);
}
.rd:hover { border-color: rgba(245, 166, 35, .6); background: rgba(245, 166, 35, .05); }
.rd input { flex: 0 0 auto; margin-top: 4px; accent-color: var(--yellow-dark); width: 17px; height: 17px; }
.rd span { display: flex; flex-direction: column; gap: 2px; font-size: .95rem; color: var(--ink); }
.rd em { font-style: normal; font-size: .86rem; color: var(--muted); }
.rd:has(input:checked) {
  border-color: var(--yellow);
  background: rgba(245, 166, 35, .1);
  box-shadow: 0 0 0 1px var(--yellow) inset;
}
.rd--sm { padding: 11px 14px; align-items: center; }
.rd--sm input { margin-top: 0; }
.rd--sm span { font-size: .9rem; }

.consent {
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-soft);
  margin-bottom: 20px;
}
.consent .field-error { display: block; margin-top: 6px; padding-left: 25px; }

/* --------------------------------------------------------------------------
   联系方式块
   -------------------------------------------------------------------------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 56px; }

.clist { display: grid; gap: 24px; margin-top: 8px; }
.clist li { display: flex; gap: 16px; }
.clist-icon {
  flex: 0 0 auto;
  width: 44px; height: 44px;
  border-radius: 11px;
  background: rgba(245, 166, 35, .14);
  color: var(--yellow-dark);
  display: grid; place-items: center;
}
.clist dt { font-size: .82rem; color: var(--muted); margin-bottom: 2px; }
.clist dd {
  margin: 0;
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--ink);
  word-break: break-all;
}
.clist dd a:hover { color: var(--yellow-dark); }
.section--dark .clist dd { color: #fff; }
.section--dark .clist dd a:hover { color: var(--yellow-light); }
.section--dark .clist-icon { background: rgba(245, 166, 35, .18); color: var(--yellow-light); }

/* 表单白卡 */
.form-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 36px 34px;
  box-shadow: var(--shadow);
}

/* --------------------------------------------------------------------------
   地图占位
   -------------------------------------------------------------------------- */
.map-box {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--bg-soft);
  min-height: 320px;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 40px 24px;
  color: var(--muted);
}
.map-box strong { display: block; color: var(--ink); font-size: 1.05rem; margin-bottom: 6px; }

/* --------------------------------------------------------------------------
   FAQ
   -------------------------------------------------------------------------- */
.faq { display: grid; gap: 14px; max-width: 880px; margin: 0 auto; }
.faq-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color .25s var(--ease);
}
.faq-item[open] { border-color: rgba(245, 166, 35, .55); }
.faq-q {
  padding: 20px 24px;
  font-weight: 700;
  color: var(--ink);
  font-size: 1.02rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}
.faq-q::-webkit-details-marker { display: none; }
.faq-q::after {
  content: "";
  flex: 0 0 auto;
  width: 9px; height: 9px;
  border-right: 2.4px solid var(--yellow-dark);
  border-bottom: 2.4px solid var(--yellow-dark);
  transform: rotate(45deg);
  transition: transform .28s var(--ease);
}
.faq-item[open] .faq-q::after { transform: rotate(-135deg); }
.faq-a { padding: 0 24px 22px; font-size: .95rem; color: var(--body); }

/* --------------------------------------------------------------------------
   CTA 区块
   -------------------------------------------------------------------------- */
.cta {
  position: relative;
  padding: 76px 0;
  background: var(--bg-dark);
  color: #fff;
  overflow: hidden;
}
.cta::before {
  content: "";
  position: absolute;
  top: -140px; right: -120px;
  width: 460px; height: 460px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(245,166,35,.22) 0%, transparent 68%);
}
.cta .wrap {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}
.cta h2 { color: #fff; margin-bottom: 10px; }
.cta p { color: #9aa6b2; margin: 0; max-width: 560px; }

/* --------------------------------------------------------------------------
   页头（子页）
   -------------------------------------------------------------------------- */
.pagehead {
  position: relative;
  padding: 78px 0 66px;
  background: var(--bg-dark);
  color: #fff;
  overflow: hidden;
}
.pagehead-bg { position: absolute; inset: 0; z-index: 0; }
.pagehead-bg img { width: 100%; height: 100%; object-fit: cover; }
.pagehead-bg::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(105deg, rgba(14,17,21,.94) 0%, rgba(14,17,21,.72) 60%, rgba(14,17,21,.5) 100%);
}
.pagehead .wrap { position: relative; z-index: 1; }
.pagehead h1 { color: #fff; margin-bottom: 14px; max-width: 800px; }
.pagehead p { color: #b9c3cd; max-width: 660px; font-size: 1.05rem; margin: 0; }

/* 面包屑 */
.crumb { display: flex; gap: 8px; align-items: center; font-size: .86rem; color: #94a1ad; margin-bottom: 18px; flex-wrap: wrap; }
.crumb a:hover { color: var(--yellow-light); }
.crumb-sep { opacity: .5; }
.crumb-current { color: var(--yellow-light); }

/* --------------------------------------------------------------------------
   页脚
   -------------------------------------------------------------------------- */
.footer { background: #12161a; color: #8b97a3; font-size: .92rem; padding: 64px 0 0; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 44px;
  padding-bottom: 48px;
}
.footer h4 { color: #fff; font-size: .98rem; margin-bottom: 18px; letter-spacing: .02em; }
.footer-links { display: grid; gap: 11px; }
.footer-links a:hover { color: var(--yellow); }
.footer-brand .logo { margin-bottom: 18px; }
.footer-brand .logo-name { color: #fff; }
.footer-brand p { color: #78848f; font-size: .9rem; max-width: 320px; }
.footer-contact { display: grid; gap: 12px; }
.footer-contact li { display: flex; gap: 10px; align-items: flex-start; }
.footer-contact a:hover { color: var(--yellow); }
.footer-tel { display: block; font-size: 1.35rem; font-weight: 800; color: var(--yellow); line-height: 1.2; letter-spacing: .01em; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .09);
  padding: 22px 0;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: .86rem;
  color: #6b7783;
}

/* 备案号：必须展示且可点击跳转工信部 */
.footer-icp a {
  color: #8b97a3;
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, .16);
  transition: color .2s;
}

.footer-icp a:hover {
  color: #cfd6dd;
}

/* --------------------------------------------------------------------------
   浮动操作
   -------------------------------------------------------------------------- */
.floatbar {
  position: fixed;
  right: 22px; bottom: 26px;
  z-index: 90;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.float-btn {
  width: 52px; height: 52px;
  border-radius: 50%;
  display: grid; place-items: center;
  background: #fff;
  color: var(--ink);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  transition: transform .22s var(--ease), background-color .22s var(--ease),
              color .22s var(--ease);
}
.float-btn:hover { transform: scale(1.08); }
.float-btn--tel { background: var(--yellow); color: #1a1206; border-color: var(--yellow); }
.float-btn--top {
  opacity: 0; visibility: hidden;
  transition: opacity .3s var(--ease), visibility .3s var(--ease), transform .22s var(--ease);
}
.float-btn--top.is-show { opacity: 1; visibility: visible; }

/* --------------------------------------------------------------------------
   滚动入场动画
   -------------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
.reveal.is-in { opacity: 1; transform: none; }

/* --------------------------------------------------------------------------
   404
   -------------------------------------------------------------------------- */
.nf {
  min-height: 66vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 80px 24px;
}
.nf-code {
  font-size: clamp(5rem, 15vw, 9rem);
  font-weight: 800;
  line-height: 1;
  color: var(--yellow);
  letter-spacing: -.04em;
  margin-bottom: 12px;
}

/* --------------------------------------------------------------------------
   响应式
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .section { padding: 72px 0; }
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .flow { grid-template-columns: repeat(3, 1fr); }
  .flow-step:not(:last-child)::after { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .split { gap: 44px; }
  .contact-grid { gap: 40px; }
}

@media (max-width: 860px) {
  /* 移动端导航 */
  .burger { display: flex; }
  .nav-tel { display: none; }

  .nav-menu {
    position: fixed;
    top: 0; right: 0;
    width: min(320px, 84vw);
    height: 100vh;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 84px 22px 30px;
    background: #fff;
    box-shadow: -12px 0 40px rgba(20, 24, 29, .16);
    transform: translateX(102%);
    transition: transform .34s var(--ease);
    overflow-y: auto;
  }
  .nav-menu.is-open { transform: translateX(0); }
  .nav-link { padding: 14px 16px; font-size: 1.02rem; border-radius: 8px; }
  .nav-link.is-active::after { display: none; }
  .nav-link.is-active { background: rgba(245, 166, 35, .1); }

  .nav-mask {
    position: fixed; inset: 0;
    background: rgba(14, 17, 21, .5);
    z-index: 99;
    opacity: 0; visibility: hidden;
    transition: opacity .3s var(--ease), visibility .3s var(--ease);
  }
  .nav-mask.is-show { opacity: 1; visibility: visible; }

  .split { grid-template-columns: 1fr; gap: 36px; }
  .split-media { order: -1; }

  .contact-grid { grid-template-columns: 1fr; }

  .grid--2, .grid--3 { grid-template-columns: 1fr; }
  .grid--4 { grid-template-columns: repeat(2, 1fr); }

  .form-row { grid-template-columns: 1fr; }

  .hero { min-height: 0; }
  .hero .wrap { padding-top: 60px; padding-bottom: 60px; }

  .cta .wrap { flex-direction: column; align-items: flex-start; }
  .floatbar { right: 14px; bottom: 18px; }
}

@media (max-width: 620px) {
  .section { padding: 56px 0; }
  .sec-head { margin-bottom: 34px; }
  .grid { gap: 20px; }
  .grid--4 { grid-template-columns: 1fr; }
  .flow { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .hero-stats { gap: 20px 28px; }
  .hero-stat b { font-size: 1.5rem; }
  .topbar-list { gap: 14px; font-size: .82rem; }
  .topbar .wrap { justify-content: center; }
  .form-card { padding: 26px 20px; }
  .trustbar .wrap { gap: 10px 22px; font-size: .86rem; }
  .footer-bottom { flex-direction: column; gap: 8px; }
}

@media (max-width: 480px) {
  /* 窄屏下导航 CTA 按钮空间不足，收起（浮动电话按钮仍可一键拨打） */
  .nav-cta .btn { display: none; }
}

@media (max-width: 420px) {
  .flow { grid-template-columns: 1fr; }
  .btn { width: 100%; }
  .btn-row { flex-direction: column; }
}

/* 打印 */
@media print {
  .header, .topbar, .floatbar, .cta, .footer { display: none; }
  .hero { min-height: 0; color: #000; background: #fff; }
  .hero-bg { display: none; }
  .hero h1, .hero-lead { color: #000; }
  body { font-size: 12pt; }
}

/* 减弱动效偏好 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
}