/* =====================================================================
   大山园工程 — 设计系统（扁平 · 克制 · 编辑感）
   纯静态站点共享样式 · 所有页面统一使用
   设计原则：实色块 / 细线分隔 / 节制留白 / 动效仅服务于阅读，不堆砌
   ===================================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root {
  /* 主色：品牌橙（取自 logo），中性炭灰作文字/深底（去蓝调，配橙更协调） */
  --ink: #292a2d;          /* 中性炭黑：标题 / 页脚 / 深底块 */
  --navy: #44464a;
  --navy-2: #5a5d63;
  --orange: #e87000;       /* 品牌主色（取自 logo 徽标） */
  --orange-deep: #cc6100;  /* hover 加深 */
  --orange-soft: #fdeede;  /* 浅橙底（图标块 / 标签底） */
  --orange-line: #f6d3ad;
  /* 兼容旧变量名：蓝/金统一指向品牌橙，全站一处换肤 */
  --blue: var(--orange);
  --blue-bright: #f5851a;
  --blue-soft: var(--orange-soft);
  --blue-line: var(--orange-line);
  --gold: var(--orange);
  --gold-deep: var(--orange-deep);
  --gold-soft: var(--orange-soft);
  /* 中性 */
  --bg: #f6f6f4;
  --surface: #ffffff;
  --line: #e8e8e5;
  --line-2: #f0f0ed;
  --text: #3a3c40;
  --muted: #6d7075;
  --muted-2: #9a9da2;
  --white: #ffffff;

  /* 兼容旧变量名：统一指向实色，杜绝渐变 */
  --grad-navy: var(--ink);
  --grad-blue: var(--blue);
  --grad-gold: var(--gold);

  /* 圆角（扁平克制） */
  --r-sm: 6px;
  --r: 10px;
  --r-lg: 14px;
  --r-pill: 999px;

  /* 阴影（极轻，靠细线撑结构而非阴影） */
  --sh-sm: 0 1px 2px rgba(15, 33, 56, .04);
  --sh: 0 6px 20px rgba(15, 33, 56, .06);
  --sh-lg: 0 14px 36px rgba(15, 33, 56, .09);
  --sh-blue: var(--sh);
  --sh-gold: var(--sh);

  /* 版心 */
  --maxw: 1260px;
  --gut: clamp(18px, 4vw, 40px);

  --ease: cubic-bezier(.4, 0, .2, 1);
}

/* ---------- 2. 基础 / Reset ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: var(--surface);
  line-height: 1.75;
  font-size: 16px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button, input, textarea, select { font-family: inherit; font-size: inherit; color: inherit; }
::selection { background: var(--blue); color: #fff; }

::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-thumb { background: #cfd5de; border-radius: 999px; }
::-webkit-scrollbar-thumb:hover { background: #b6bdc8; }

/* ---------- 3. 布局工具 ---------- */
.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gut); }
.section { padding: clamp(54px, 7vw, 96px) 0; position: relative; }
.section--tint { background: var(--bg); }
.section--soft { background: linear-gradient(180deg, #fdf6ee 0%, #fbf7f2 100%); }
.section--ink { background: var(--ink); color: #c4cedd; }
.grid { display: grid; gap: clamp(16px, 2vw, 24px); }
.cols-2 { grid-template-columns: repeat(2, 1fr); }
.cols-3 { grid-template-columns: repeat(3, 1fr); }
.cols-4 { grid-template-columns: repeat(4, 1fr); }
.center { text-align: center; }

/* ---------- 4. 排版 / 标题 ---------- */
h1, h2, h3, h4 { line-height: 1.3; color: var(--ink); font-weight: 700; letter-spacing: 0; }
.section--ink h1, .section--ink h2, .section--ink h3 { color: #fff; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: 13px; font-weight: 600; letter-spacing: 1.5px;
  color: var(--blue); text-transform: uppercase; margin-bottom: 16px;
}
.eyebrow::before { content: ""; width: 22px; height: 2px; background: var(--gold); }

.section-head { max-width: 720px; margin: 0 auto clamp(34px, 4.5vw, 56px); }
.section-head.center { text-align: center; }
.section-head.center .eyebrow::before { display: none; }
.section-head.center .eyebrow { padding-bottom: 0; }
.section-title { font-size: clamp(25px, 3.2vw, 38px); font-weight: 800; letter-spacing: -.5px; }
.section-title em { font-style: normal; color: var(--blue); }
.section-sub { margin-top: 14px; color: var(--muted); font-size: clamp(15px, 1.5vw, 16.5px); line-height: 1.8; }

/* ---------- 5. 按钮（实色扁平） ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 26px; border-radius: var(--r-sm); font-weight: 600; font-size: 15px;
  border: 1px solid transparent; cursor: pointer;
  transition: background .2s var(--ease), border-color .2s, color .2s, transform .2s var(--ease);
  white-space: nowrap;
}
.btn i { font-size: 1.1em; }
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--ink); transform: translateY(-2px); }
.btn-gold { background: var(--gold); color: #fff; }
.btn-gold:hover { background: #b07f25; transform: translateY(-2px); }
.btn-ghost { background: transparent; color: #fff; border-color: rgba(255, 255, 255, .35); }
.btn-ghost:hover { background: rgba(255, 255, 255, .1); border-color: rgba(255, 255, 255, .6); transform: translateY(-2px); }
.btn-outline { background: transparent; color: var(--blue); border-color: var(--blue-line); }
.btn-outline:hover { background: var(--blue); color: #fff; border-color: var(--blue); transform: translateY(-2px); }
.btn-sm { padding: 10px 18px; font-size: 14px; }

/* ---------- 6. 顶部导航（白底常驻） ---------- */
.header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  background: var(--surface); border-bottom: 1px solid var(--line);
  transition: box-shadow .25s, padding .25s;
  padding: 12px 0;
}
.header.scrolled { box-shadow: 0 4px 18px rgba(15, 33, 56, .07); padding: 8px 0; }
.nav { display: flex; align-items: center; justify-content: space-between; gap: 16px; }

.brand { display: flex; align-items: center; gap: 11px; }
.brand__mark { width: 44px; height: 44px; flex: none; object-fit: contain; display: block; }
.brand__name { font-weight: 800; font-size: clamp(15px, 1.25vw, 19px); color: var(--ink); line-height: 1.25; letter-spacing: .3px; white-space: nowrap; }
.brand__name small { display: block; font-size: 11px; letter-spacing: .5px; color: var(--muted-2); font-weight: 400; }

.menu { display: flex; align-items: center; gap: 0; }
.menu a {
  padding: 8px 12px; border-radius: var(--r-sm); font-weight: 500; font-size: 15px;
  color: var(--text); transition: color .18s; position: relative; white-space: nowrap;
}
.menu a::after { content: ""; position: absolute; left: 12px; right: 12px; bottom: 3px; height: 2px; background: var(--orange); transform: scaleX(0); transform-origin: left; transition: transform .22s var(--ease); }
.menu a:hover, .menu a.active { color: var(--orange); }
.menu a.active::after, .menu a:hover::after { transform: scaleX(1); }

.nav__cta { display: flex; align-items: center; gap: 14px; }
.nav__tel { display: flex; align-items: center; gap: 9px; font-weight: 800; color: var(--ink); white-space: nowrap; font-size: 18px; }
.nav__tel i { color: var(--orange); font-size: 22px; }
.nav__tel small { display: block; font-size: 11px; font-weight: 400; color: var(--muted-2); }

.burger { display: none; width: 42px; height: 42px; border-radius: 8px; background: var(--bg); border: 1px solid var(--line); cursor: pointer; }
.burger span { display: block; width: 18px; height: 2px; background: var(--ink); margin: 4px auto; border-radius: 2px; transition: .3s; }

/* 移动端抽屉 */
.drawer { position: fixed; inset: 0; z-index: 200; visibility: hidden; }
.drawer__mask { position: absolute; inset: 0; background: rgba(15, 33, 56, .5); opacity: 0; transition: .3s; }
.drawer__panel { position: absolute; top: 0; right: 0; height: 100%; width: min(82vw, 330px); background: var(--surface); box-shadow: var(--sh-lg); transform: translateX(100%); transition: transform .3s var(--ease); padding: 24px; display: flex; flex-direction: column; }
.drawer.open { visibility: visible; }
.drawer.open .drawer__mask { opacity: 1; }
.drawer.open .drawer__panel { transform: translateX(0); }
.drawer__close { align-self: flex-end; width: 40px; height: 40px; border-radius: 8px; border: 1px solid var(--line); background: var(--bg); font-size: 22px; cursor: pointer; color: var(--ink); }
.drawer__panel a:not(.btn) { padding: 15px 4px; font-size: 16px; font-weight: 500; border-bottom: 1px solid var(--line); display: flex; justify-content: space-between; align-items: center; color: var(--text); }
.drawer__panel a:not(.btn) i { color: var(--muted-2); }
.drawer__panel a:not(.btn):hover { color: var(--blue); }
.drawer__tel { margin-top: auto; margin-bottom: 4px; }
.drawer__tel.btn { color: #fff; }
.drawer__tel.btn i { color: #fff; }

/* ---------- 7. Hero（浅底 · 工程实景背景） ---------- */
.hero { position: relative; padding: clamp(140px, 15vw, 190px) 0 clamp(56px, 7vw, 96px); background: #f1f0ec; color: var(--text); overflow: hidden; }
.hero__grid {
  position: absolute; inset: 0; z-index: 0;
  background-image: url("../img/hero-office.jpg");
  background-size: cover; background-position: center right;
}
.hero::after {
  content: ""; position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(100deg, rgba(249,248,245,.98) 0%, rgba(249,248,245,.94) 36%, rgba(249,248,245,.72) 56%, rgba(249,248,245,.34) 78%, rgba(249,248,245,.12) 100%);
}
.hero__glow { display: none; }
.hero .container { position: relative; z-index: 2; }
.hero__inner { display: grid; grid-template-columns: 1.08fr .92fr; gap: clamp(32px, 5vw, 60px); align-items: center; }
.hero__badge { display: inline-flex; align-items: center; gap: 8px; padding: 7px 15px; border-radius: var(--r-pill); background: var(--orange-soft); border: 1px solid var(--orange-line); font-size: 13px; font-weight: 600; margin-bottom: 22px; color: var(--orange-deep); }
.hero__badge i { color: var(--orange); }
.hero h1 { color: var(--ink); font-size: clamp(31px, 5vw, 54px); line-height: 1.2; font-weight: 800; letter-spacing: -1px; }
.hero h1 .hl { color: var(--orange); position: relative; white-space: nowrap; }
.hero__lead { margin: 20px 0 28px; font-size: clamp(15px, 1.7vw, 18px); color: var(--muted); max-width: 540px; line-height: 1.85; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 30px; }
.hero__tags { display: flex; flex-wrap: wrap; gap: 10px 24px; color: var(--text); font-size: 14px; }
.hero__tags span { display: inline-flex; align-items: center; gap: 7px; }
.hero__tags i { color: var(--orange); }
/* 仅移动端：工程实景照片横幅（桌面端隐藏，照片走背景） */
.hero__photo { display: none; border-radius: var(--r); overflow: hidden; aspect-ratio: 16/10; box-shadow: var(--sh); }
.hero__photo img { width: 100%; height: 100%; object-fit: cover; }

/* Hero 右侧表单卡 */
.hero__card { background: var(--surface); color: var(--text); border-radius: var(--r-lg); padding: 28px; box-shadow: var(--sh-lg); border: 1px solid var(--line); }
.hero__card h3 { font-size: 19px; margin-bottom: 5px; }
.hero__card p { color: var(--muted); font-size: 13.5px; margin-bottom: 18px; }
.field { margin-bottom: 14px; }
.field label { display: block; font-size: 13px; font-weight: 500; color: var(--muted); margin-bottom: 6px; }
.field input, .field select, .field textarea { width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: var(--r-sm); background: var(--surface); transition: border .18s, box-shadow .18s; font-size: 15px; }
.field input::placeholder, .field textarea::placeholder { color: var(--muted-2); }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--orange); box-shadow: 0 0 0 3px rgba(232,112,0,.14); }
.hero__card .btn { width: 100%; margin-top: 4px; }
.hero__card .note { font-size: 12px; color: var(--muted-2); text-align: center; margin-top: 12px; }

/* ---------- 8. 统计计数 ---------- */
.stats { position: relative; z-index: 3; margin-top: clamp(-46px, -4vw, -40px); }
.stats__grid { background: var(--surface); border-radius: var(--r-lg); border: 1px solid var(--line); box-shadow: var(--sh); display: grid; grid-template-columns: repeat(4, 1fr); overflow: hidden; }
.stat { padding: 30px 24px; text-align: center; position: relative; }
.stat + .stat::before { content: ""; position: absolute; left: 0; top: 24%; height: 52%; width: 1px; background: var(--line); }
.stat__num { font-size: clamp(28px, 3.6vw, 42px); font-weight: 800; color: var(--orange); line-height: 1; letter-spacing: -1px; }
.stat__num .suf { color: var(--orange); }
.stat__label { margin-top: 10px; color: var(--muted); font-size: 14px; }

/* ---------- 9. 服务卡 ---------- */
.svc-card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--r);
  padding: 28px 24px; transition: border-color .2s, box-shadow .2s, transform .2s var(--ease);
  position: relative; height: 100%;
}
.svc-card::before { display: none; }
.svc-card:hover { border-color: var(--blue-line); box-shadow: var(--sh); transform: translateY(-3px); }
.svc-card__ic { width: 50px; height: 50px; border-radius: 10px; background: var(--blue-soft); color: var(--blue); display: grid; place-items: center; font-size: 24px; margin-bottom: 18px; transition: background .2s, color .2s; }
.svc-card:hover .svc-card__ic { background: var(--blue); color: #fff; }
.svc-card h3 { font-size: 18px; margin-bottom: 9px; font-weight: 700; }
.svc-card p { color: var(--muted); font-size: 14.5px; line-height: 1.75; }
.svc-card__more { display: inline-flex; align-items: center; gap: 6px; margin-top: 16px; color: var(--blue); font-weight: 600; font-size: 14px; }
.svc-card__more i { transition: transform .2s; }
.svc-card:hover .svc-card__more i { transform: translateX(4px); }

/* ---------- 10. 优势 ---------- */
.feat { display: flex; gap: 16px; align-items: flex-start; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 26px 24px; transition: border-color .2s, box-shadow .2s, transform .2s var(--ease); height: 100%; }
.feat:hover { border-color: var(--blue-line); box-shadow: var(--sh); transform: translateY(-3px); }
.feat__ic { width: 48px; height: 48px; border-radius: 10px; flex: none; display: grid; place-items: center; font-size: 23px; background: var(--blue-soft); color: var(--blue); }
.feat h3 { font-size: 17px; margin-bottom: 7px; font-weight: 700; }
.feat p { color: var(--muted); font-size: 14px; line-height: 1.75; }

/* ---------- 11. 办理流程（卡片步骤 + 橙色虚线连接） ---------- */
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; position: relative; padding-top: 16px; }
.steps::before { content: ""; position: absolute; top: 78px; left: 11%; right: 11%; border-top: 2px dashed var(--orange-line); z-index: 0; }
.step { position: relative; z-index: 1; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 30px 16px 22px; text-align: center; transition: transform .2s var(--ease), box-shadow .2s, border-color .2s; }
.step:hover { transform: translateY(-4px); box-shadow: var(--sh); border-color: var(--orange-line); }
.step__no { position: absolute; top: -13px; left: 50%; transform: translateX(-50%); width: 28px; height: 28px; border-radius: 50%; background: var(--orange); color: #fff; font-size: 13px; font-weight: 700; display: grid; place-items: center; box-shadow: 0 4px 10px rgba(232,112,0,.32); }
.step__dot { width: 56px; height: 56px; margin: 4px auto 16px; border-radius: 50%; background: var(--orange-soft); border: none; display: grid; place-items: center; font-size: 25px; color: var(--orange); transition: .2s; }
.step:hover .step__dot { background: var(--orange); color: #fff; }
.step h3 { font-size: 16px; margin-bottom: 7px; font-weight: 700; }
.step p { color: var(--muted); font-size: 13px; line-height: 1.65; }

/* ---------- 12. 案例卡（图上 · 白底正文） ---------- */
.case-card { display: block; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; color: var(--text); transition: border-color .2s, box-shadow .2s, transform .2s var(--ease); height: 100%; }
.case-card:hover { border-color: var(--orange-line); box-shadow: var(--sh); transform: translateY(-3px); }
.case-card img { position: static; display: block; width: 100%; height: 200px; object-fit: cover; transition: transform .5s var(--ease); }
.case-card:hover img { transform: scale(1.05); }
.case-card__body { padding: 20px 22px; }
.case-card__tag { display: inline-block; padding: 5px 12px; border-radius: var(--r-sm); background: var(--orange); color: #fff; font-size: 12px; font-weight: 600; margin-bottom: 12px; }
.case-card h3 { color: var(--ink); font-size: 17px; margin-bottom: 8px; font-weight: 700; line-height: 1.45; }
.case-card p { color: var(--muted); font-size: 13.5px; line-height: 1.7; }
.case-card__date { display: inline-flex; align-items: center; gap: 6px; margin-top: 14px; color: var(--muted-2); font-size: 12.5px; }
.case-card__date i { color: var(--orange); }
.case-card__meta { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 6px; margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--line); }
.case-card__meta > div { min-width: 0; }
.case-card__meta span { display: flex; align-items: center; gap: 4px; color: var(--muted-2); font-size: 11px; margin-bottom: 4px; }
.case-card__meta span i { font-size: 12px; color: var(--muted-2); }
.case-card__meta b { color: var(--ink); font-weight: 700; font-size: 12.5px; white-space: nowrap; }
.case-card__meta .stars { color: var(--orange); letter-spacing: .5px; }

/* ---------- 13. 新闻卡 ---------- */
.news-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; transition: border-color .2s, box-shadow .2s, transform .2s var(--ease); height: 100%; }
.news-card:hover { border-color: var(--blue-line); box-shadow: var(--sh); transform: translateY(-3px); }
.news-card__media { height: 188px; background: var(--ink); position: relative; overflow: hidden; }
.news-card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s var(--ease); }
.news-card:hover .news-card__media img { transform: scale(1.04); }
.news-card__date { position: absolute; left: 14px; top: 14px; background: var(--surface); border-radius: var(--r-sm); padding: 7px 11px; text-align: center; line-height: 1; }
.news-card__date b { display: block; font-size: 20px; color: var(--ink); font-weight: 800; }
.news-card__date span { font-size: 11px; color: var(--muted); }
.news-card__body { padding: 22px; }
.news-card__cat { font-size: 12px; font-weight: 600; color: var(--blue); }
.news-card h3 { font-size: 16.5px; margin: 8px 0 10px; line-height: 1.5; font-weight: 700; }
.news-card p { color: var(--muted); font-size: 14px; line-height: 1.7; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* ---------- 14. CTA 横幅（浅底 · 功能点 + 主按钮） ---------- */
.cta-band { display: flex; align-items: center; flex-wrap: wrap; gap: clamp(18px, 2.4vw, 34px); background: linear-gradient(120deg, #fef4e9 0%, #fdeede 100%); border: 1px solid var(--orange-line); border-radius: var(--r-lg); padding: clamp(22px, 3vw, 30px) clamp(26px, 3.4vw, 42px); }
.cta-band__lead { display: flex; align-items: center; gap: 15px; }
.cta-band__ic { width: 54px; height: 54px; border-radius: 14px; flex: none; background: linear-gradient(135deg, #f6a948, #e0780f); color: #fff; display: grid; place-items: center; font-size: 27px; box-shadow: 0 6px 16px rgba(232,112,0,.28); }
.cta-band__lead h3 { font-size: clamp(19px, 2.1vw, 23px); margin-bottom: 4px; font-weight: 800; }
.cta-band__lead span { color: var(--muted); font-size: 13px; }
.cta-band__points { display: flex; flex-wrap: wrap; gap: 14px clamp(20px, 2.4vw, 34px); flex: 0 1 auto; justify-content: flex-start; }
.cta-band__pt { display: flex; align-items: center; gap: 9px; }
.cta-band__pt > i { font-size: 23px; color: var(--orange); flex: none; }
.cta-band__pt b { display: block; font-size: 14px; color: var(--ink); }
.cta-band__pt span { font-size: 11.5px; color: var(--muted); }
.cta-band__btn { flex: none; margin-left: auto; }

/* ---------- 15. 页脚 ---------- */
.footer { background: var(--ink); color: #9aa7b8; padding: clamp(52px, 7vw, 76px) 0 28px; }
.footer__top { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.4fr; gap: 40px; padding-bottom: 38px; border-bottom: 1px solid rgba(255,255,255,.09); }
.footer__brand .brand__name { color: #fff; }
.footer__brand p { margin-top: 18px; font-size: 14px; line-height: 1.85; max-width: 320px; }
.footer h4 { color: #fff; font-size: 15px; margin-bottom: 18px; font-weight: 700; }
.footer__links li { margin-bottom: 11px; }
.footer__links a { font-size: 14px; transition: color .18s; color: #9aa7b8; }
.footer__links a:hover { color: #fff; }
.footer__contact li { display: flex; gap: 12px; margin-bottom: 15px; font-size: 14px; align-items: flex-start; }
.footer__contact i { color: var(--gold); font-size: 17px; margin-top: 3px; flex: none; }
.footer__contact b { color: #fff; display: block; font-size: 17px; font-weight: 700; }
.footer__bottom { padding-top: 24px; display: flex; flex-wrap: wrap; gap: 10px; justify-content: space-between; font-size: 13px; color: #74808f; }
.footer__bottom a:hover { color: #fff; }

/* ---------- 16. 浮动联系侧栏 ---------- */
.fab { position: fixed; right: 18px; bottom: 24px; z-index: 90; display: flex; flex-direction: column; gap: 8px; }
.fab__btn { width: 50px; height: 50px; border-radius: 10px; background: var(--surface); box-shadow: var(--sh); display: grid; place-items: center; font-size: 21px; color: var(--navy); cursor: pointer; position: relative; transition: background .2s, color .2s, transform .2s; border: 1px solid var(--line); }
.fab__btn:hover { transform: translateY(-2px); background: var(--blue); color: #fff; border-color: var(--blue); }
.fab__btn[data-tip]:hover::after { content: attr(data-tip); position: absolute; right: 60px; top: 50%; transform: translateY(-50%); background: var(--ink); color: #fff; padding: 7px 12px; border-radius: 6px; font-size: 13px; white-space: nowrap; }
.fab__top { background: var(--ink); color: #fff; border-color: var(--ink); }

/* ---------- 17. 内页通栏头（浅底 · 工程实景） ---------- */
.page-hero { background: #f1f0ec; color: var(--text); padding: clamp(116px, 13vw, 150px) 0 clamp(40px, 5vw, 62px); position: relative; overflow: hidden; }
.page-hero__grid {
  position: absolute; inset: 0; z-index: 0;
  background-image: url("../img/page-banner.jpg");
  background-size: cover; background-position: center;
}
.page-hero::after {
  content: ""; position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(100deg, rgba(249,248,245,.97) 0%, rgba(249,248,245,.9) 45%, rgba(249,248,245,.6) 75%, rgba(249,248,245,.32) 100%);
}
.page-hero__glow { display: none; }
.page-hero .container { position: relative; z-index: 2; }
.page-hero h1 { color: var(--ink); font-size: clamp(28px, 4.2vw, 46px); font-weight: 800; letter-spacing: -1px; }
.page-hero p { color: var(--muted); margin-top: 14px; max-width: 640px; font-size: clamp(15px,1.5vw,17px); line-height: 1.8; }
.crumb { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--muted); margin-bottom: 16px; }
.crumb a:hover { color: var(--orange); }
.crumb i { font-size: 12px; opacity: .6; }

/* ---------- 18. 杂项 ---------- */
.chip { display: inline-flex; align-items: center; gap: 6px; padding: 9px 16px; border-radius: var(--r-sm); background: var(--surface); border: 1px solid var(--line); font-size: 14px; font-weight: 500; color: var(--text); transition: .18s; }
.chip:hover { border-color: var(--blue); color: var(--blue); }
.chip i { color: var(--gold); }
.chip:hover i { color: var(--blue); }

.tick { display: flex; align-items: flex-start; gap: 11px; margin-bottom: 13px; }
.tick i { width: 22px; height: 22px; border-radius: 5px; background: var(--blue-soft); color: var(--blue); display: grid; place-items: center; font-size: 13px; flex: none; margin-top: 3px; }
.tick span { color: var(--muted); font-size: 15px; line-height: 1.7; }

.partners { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.partner { padding: 15px 26px; border-radius: var(--r); background: var(--surface); border: 1px solid var(--line); font-weight: 700; color: var(--navy-2); font-size: 16px; transition: .18s; }
.partner:hover { color: var(--blue); border-color: var(--blue-line); }

/* ---------- 19. 滚动揭示动画（克制：仅淡入上移） ---------- */
[data-reveal] { opacity: 0; transform: translateY(20px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
[data-reveal].in { opacity: 1; transform: none; }
[data-reveal][data-delay="1"] { transition-delay: .06s; }
[data-reveal][data-delay="2"] { transition-delay: .12s; }
[data-reveal][data-delay="3"] { transition-delay: .18s; }
[data-reveal][data-delay="4"] { transition-delay: .24s; }
@media (prefers-reduced-motion: reduce) { [data-reveal] { opacity: 1; transform: none; transition: none; } html { scroll-behavior: auto; } }

/* ---------- 19b. 首页服务（左介绍 + 右卡片网格 + 蓝图底纹） ---------- */
.svc-section { position: relative; overflow: hidden; }
.svc-section__bg { position: absolute; inset: 0; z-index: 0; background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px); background-size: 58px 58px; opacity: .5; -webkit-mask-image: radial-gradient(ellipse 75% 100% at 18% 28%, #000, transparent 72%); mask-image: radial-gradient(ellipse 75% 100% at 18% 28%, #000, transparent 72%); }
.svc-split { position: relative; z-index: 1; display: grid; grid-template-columns: 0.86fr 1.7fr; gap: clamp(28px, 3.5vw, 50px); align-items: start; }
.svc-split__intro .hero__badge { margin-bottom: 18px; }
.svc-split__intro h2 { font-size: clamp(24px, 3vw, 36px); font-weight: 800; margin-bottom: 14px; letter-spacing: -.5px; line-height: 1.25; }
.svc-split__intro h2 em { font-style: normal; color: var(--orange); }
.svc-split__lead { color: var(--text); font-size: 16px; font-weight: 600; margin-bottom: 12px; line-height: 1.7; }
.svc-split__desc { color: var(--muted); font-size: 14.5px; line-height: 1.85; margin-bottom: 24px; }
.svc-split__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 28px; }
.svc-split__badges { display: flex; flex-wrap: wrap; gap: 16px 18px; }
.svc-split__badge { display: flex; align-items: flex-start; gap: 10px; width: calc(50% - 9px); }
.svc-split__badge i { width: 34px; height: 34px; border-radius: 9px; flex: none; background: var(--orange-soft); color: var(--orange); display: grid; place-items: center; font-size: 17px; }
.svc-split__badge b { display: block; font-size: 13.5px; color: var(--ink); }
.svc-split__badge span { font-size: 11.5px; color: var(--muted); }
.svc-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.svc-mini { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 22px 14px 18px; text-align: center; transition: transform .2s var(--ease), box-shadow .2s, border-color .2s; }
.svc-mini:hover { transform: translateY(-4px); box-shadow: var(--sh); border-color: var(--orange-line); }
.svc-mini__ic { width: 48px; height: 48px; margin: 0 auto 12px; border-radius: 50%; background: var(--orange-soft); color: var(--orange); display: grid; place-items: center; font-size: 22px; transition: .2s; }
.svc-mini:hover .svc-mini__ic { background: var(--orange); color: #fff; }
.svc-mini h3 { font-size: 15px; margin-bottom: 8px; font-weight: 700; }
.svc-mini p { color: var(--muted); font-size: 12px; line-height: 1.6; margin-bottom: 10px; }
.svc-mini__more { display: inline-flex; align-items: center; gap: 4px; color: var(--orange); font-weight: 600; font-size: 12.5px; }
.svc-mini__more i { transition: transform .2s; }
.svc-mini:hover .svc-mini__more i { transform: translateX(3px); }

/* ---------- 20. 移动端底部操作栏 ---------- */
.mbar { display: none; position: fixed; left: 0; right: 0; bottom: 0; z-index: 95; background: var(--surface); border-top: 1px solid var(--line); box-shadow: 0 -3px 16px rgba(15, 33, 56, .08); }
.mbar__inner { display: grid; grid-template-columns: repeat(4, 1fr); }
.mbar a, .mbar button { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 3px; padding: 8px 4px; font-size: 11.5px; color: var(--text); background: none; border: none; border-left: 1px solid var(--line); cursor: pointer; min-height: 56px; font-weight: 500; }
.mbar a:first-child, .mbar button:first-child { border-left: none; }
.mbar i { font-size: 21px; color: var(--orange); }
.mbar a.mbar__cta { background: var(--orange); color: #fff; }
.mbar a.mbar__cta i { color: #fff; }

/* ---------- 21. 响应式 ---------- */
@media (max-width: 1024px) {
  .footer__top { grid-template-columns: 1fr 1fr; gap: 30px; }
  .steps { grid-template-columns: repeat(2, 1fr); gap: 28px 16px; }
  .steps::before { display: none; }
  .svc-split { grid-template-columns: 1fr; gap: 30px; }
  .svc-split__intro .svc-split__badges { max-width: 520px; }
}
@media (max-width: 880px) {
  .cta-band { flex-direction: column; align-items: stretch; text-align: center; gap: 20px; }
  .cta-band__lead { justify-content: center; text-align: left; }
  .cta-band__points { justify-content: center; }
  .cta-band__btn { width: 100%; }
}
@media (max-width: 880px) {
  .menu, .nav__tel { display: none; }
  .burger { display: block; }
  .hero__inner { grid-template-columns: 1fr; }
  .hero__card { max-width: 460px; }
  .hero__photo { display: block; max-width: 460px; }
  .cols-4 { grid-template-columns: repeat(2, 1fr); }
  .cols-3 { grid-template-columns: repeat(2, 1fr); }
  .stats__grid { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(1)::before, .stat:nth-child(3)::before { display: none; }
  .stat:nth-child(3), .stat:nth-child(4) { border-top: 1px solid var(--line); }
  /* 移动端：隐藏右侧浮标，启用底部操作栏 */
  .fab { display: none; }
  .mbar { display: block; }
  body { padding-bottom: 58px; }
}
@media (max-width: 560px) {
  body { font-size: 15px; }
  .cols-2, .cols-3, .cols-4 { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .svc-grid { grid-template-columns: 1fr 1fr; }
  .svc-mini p { min-height: 0; }
  .stats { margin-top: -30px; }
  .stats__grid { grid-template-columns: 1fr 1fr; }
  .footer__top { grid-template-columns: 1fr; }
  .hero__actions .btn { flex: 1; }
}