/* ==========================================================
   Xuxu Construction · xuxucontractornyc.com
   纽约建筑总承包 —— 墨黑 + 石色 + 黄铜 的高端设计系统
   ========================================================== */

:root {
  --ink: #121418;
  --ink-2: #1b1e24;
  --ink-3: #262a31;
  --paper: #fbfaf7;
  --stone: #f3efe8;
  --stone-2: #e9e3d8;
  --line: #e2dbcf;
  --text: #2a2d32;
  --muted: #6c6f75;
  --brass: #a9834e;
  --brass-2: #c8a46b;
  --brass-soft: rgba(201, 164, 107, .14);
  --white: #ffffff;
  --dark-color: #121418;
  --accent-color: #c8a46b;
  --serif: "Noto Serif SC", "Songti SC", "STSong", "Source Han Serif SC", Georgia, serif;
  --sans: "Noto Sans SC", -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --latin: "Cormorant Garamond", Georgia, "Times New Roman", serif;
  --radius: 2px;
  --shadow: 0 24px 60px -28px rgba(18, 20, 24, .35);
  --transition: all .35s cubic-bezier(.2, .7, .2, 1);
  --container: 1240px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.85;
  color: var(--text);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--brass); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--ink); }
h1, h2, h3, h4, h5 { font-family: var(--serif); color: var(--ink); font-weight: 600; line-height: 1.35; margin: 0 0 .6em; letter-spacing: .02em; }
h1 { font-size: clamp(2rem, 4.6vw, 3.6rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.45rem); }
h3 { font-size: 1.28rem; }
p { margin: 0 0 1.1em; }
ul, ol { padding-left: 1.2em; }
address { font-style: normal; }
svg { width: 1em; height: 1em; flex-shrink: 0; }
:focus-visible { outline: 2px solid var(--brass-2); outline-offset: 3px; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 28px; }
.section { padding: clamp(72px, 9vw, 128px) 0; }
.section-sm { padding: clamp(48px, 6vw, 80px) 0; }
.bg-stone { background: var(--stone); }
.bg-ink { background: var(--ink); color: rgba(255, 255, 255, .78); }
.bg-ink h2, .bg-ink h3 { color: var(--white); }
.muted { color: var(--muted); }
.center { text-align: center; }

/* ---------- 标题小字 ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 14px;
  font-family: var(--latin); font-size: 1.05rem; font-style: italic;
  letter-spacing: .08em; color: var(--brass); margin-bottom: 14px;
}
.eyebrow::before { content: ""; width: 38px; height: 1px; background: currentColor; }
.eyebrow.light { color: var(--brass-2); }
.section-head { max-width: 760px; margin-bottom: clamp(40px, 5vw, 64px); }
.section-head.center { margin-left: auto; margin-right: auto; }
.section-head.center .eyebrow::after { content: ""; width: 38px; height: 1px; background: currentColor; }
.section-head p { color: var(--muted); font-size: 1.05rem; }
.bg-ink .section-head p { color: rgba(255, 255, 255, .65); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 15px 30px; border: 1px solid transparent; border-radius: var(--radius);
  font-size: .95rem; font-weight: 500; letter-spacing: .12em; cursor: pointer;
  transition: var(--transition); font-family: var(--sans); line-height: 1.2;
}
.btn svg { width: 17px; height: 17px; }
.btn-brass { background: var(--brass); color: var(--white); border-color: var(--brass); }
.btn-brass:hover { background: var(--ink); border-color: var(--ink); color: var(--white); }
.bg-ink .btn-brass:hover, .hero .btn-brass:hover, .page-hero .btn-brass:hover, .cta-band .btn-brass:hover { background: var(--white); border-color: var(--white); color: var(--ink); }
.btn-line { border-color: rgba(255, 255, 255, .5); color: var(--white); }
.btn-line:hover { border-color: var(--brass-2); color: var(--brass-2); }
.btn-dark { border-color: var(--ink); color: var(--ink); }
.btn-dark:hover { background: var(--ink); color: var(--white); }
.btn-lg { padding: 18px 36px; }
.btn-block { width: 100%; }
.link-more { display: inline-flex; align-items: center; gap: 10px; font-size: .92rem; letter-spacing: .12em; color: var(--brass); font-weight: 500; }
.link-more::after { content: "→"; transition: transform .3s; }
.link-more:hover::after { transform: translateX(5px); }

/* ---------- 顶栏 ---------- */
.topbar { background: var(--ink); color: rgba(255, 255, 255, .6); font-size: .8rem; letter-spacing: .06em; }
.topbar .container { display: flex; justify-content: space-between; align-items: center; min-height: 40px; gap: 20px; }
.topbar-links { display: flex; gap: 26px; list-style: none; margin: 0; padding: 0; }
.topbar a { color: rgba(255, 255, 255, .72); }
.topbar a:hover { color: var(--brass-2); }

/* ---------- 页头 ---------- */
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(251, 250, 247, .96); border-bottom: 1px solid var(--line); backdrop-filter: saturate(1.4) blur(10px); -webkit-backdrop-filter: saturate(1.4) blur(10px); transition: box-shadow .3s; }
.site-header.scrolled { box-shadow: 0 10px 30px -20px rgba(0, 0, 0, .35); }
.nav { display: flex; align-items: center; justify-content: space-between; min-height: 84px; gap: 24px; }
.logo a { display: flex; align-items: center; gap: 14px; color: var(--ink); text-decoration: none; transition: opacity .3s; }
.logo a:hover { opacity: .8; color: var(--ink); }
.logo img { width: 46px; height: 46px; }
.logo-text { display: flex; flex-direction: column; line-height: 1.15; }
.logo-en { font-family: var(--latin); font-size: 1.42rem; font-weight: 600; letter-spacing: .16em; }
.logo-cn { font-size: .66rem; letter-spacing: .38em; white-space: nowrap; color: var(--brass); margin-top: 3px; }

.nav-menu { display: flex; align-items: center; gap: 4px; list-style: none; margin: 0; padding: 0; }
.nav-menu > li > a { display: block; white-space: nowrap; padding: 30px 12px; color: var(--ink); font-size: .95rem; letter-spacing: .08em; position: relative; }
.nav-menu > li > a::after { content: ""; position: absolute; left: 14px; right: 14px; bottom: 22px; height: 1px; background: var(--brass); transform: scaleX(0); transform-origin: left; transition: transform .35s; }
.nav-menu > li > a:hover::after, .nav-menu > li > a.active::after { transform: scaleX(1); }
.nav-menu > li > a:hover { color: var(--brass); }
.has-drop { position: relative; }
.mega {
  position: absolute; top: 100%; left: 50%; transform: translate(-50%, 8px);
  width: 720px; background: var(--white); border: 1px solid var(--line); box-shadow: var(--shadow);
  padding: 30px; display: grid; grid-template-columns: 1fr 1fr; gap: 6px 28px;
  opacity: 0; visibility: hidden; transition: var(--transition);
}
.has-drop:hover .mega, .has-drop:focus-within .mega { opacity: 1; visibility: visible; transform: translate(-50%, 0); }
.mega h5 { grid-column: 1 / -1; font-family: var(--latin); font-style: italic; font-weight: 500; color: var(--brass); font-size: 1rem; letter-spacing: .1em; margin: 0 0 8px; }
.mega a { display: block; padding: 10px 12px; color: var(--ink); font-size: .95rem; border-left: 1px solid transparent; }
.mega a small { display: block; color: var(--muted); font-size: .8rem; letter-spacing: .02em; }
.mega a:hover { background: var(--stone); border-left-color: var(--brass); color: var(--ink); }

.nav-cta { display: flex; align-items: center; gap: 16px; }
.nav-phone { display: flex; align-items: center; gap: 12px; color: var(--ink); }
.nav-phone .ic { width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 50%; display: grid; place-items: center; color: var(--brass); }
.nav-phone span { display: block; font-size: .72rem; color: var(--muted); letter-spacing: .12em; }
.nav-phone strong { white-space: nowrap; font-family: var(--latin); font-size: 1.25rem; letter-spacing: .04em; font-weight: 600; }
.nav-phone:hover { color: var(--brass); }
.nav-toggle { display: none; width: 46px; height: 46px; background: none; border: 1px solid var(--line); cursor: pointer; padding: 0; flex-direction: column; justify-content: center; align-items: center; gap: 5px; }
.nav-toggle span { display: block; width: 20px; height: 1.5px; background: var(--ink); transition: var(--transition); }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }
.nav-backdrop { display: none; }

/* ---------- 首页大图 ---------- */
.hero { position: relative; min-height: min(88vh, 860px); display: flex; align-items: center; color: var(--white); overflow: hidden; background: var(--ink); }
.hero-slides { position: absolute; inset: 0; }
.hero-slides img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0; animation: heroFade 21s infinite; transform: scale(1.06); }
.hero-slides img:nth-child(1) { animation-delay: 0s; }
.hero-slides img:nth-child(2) { animation-delay: 7s; }
.hero-slides img:nth-child(3) { animation-delay: 14s; }
@keyframes heroFade {
  0% { opacity: 0; transform: scale(1.06); }
  5% { opacity: 1; }
  33% { opacity: 1; }
  40% { opacity: 0; transform: scale(1); }
  100% { opacity: 0; }
}
.hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(12, 13, 16, .88) 0%, rgba(12, 13, 16, .6) 48%, rgba(12, 13, 16, .2) 100%); }
.hero > .container { position: relative; z-index: 2; padding-top: 80px; padding-bottom: 120px; }
.hero-inner { max-width: 720px; }
.hero h1 { color: var(--white); font-weight: 500; margin-bottom: .45em; }
.hero h1 em { font-style: normal; color: var(--brass-2); }
.hero .lead { font-size: clamp(1rem, 1.5vw, 1.15rem); color: rgba(255, 255, 255, .78); max-width: 600px; margin-bottom: 2.2em; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.hero-meta { position: absolute; z-index: 2; left: 0; right: 0; bottom: 0; border-top: 1px solid rgba(255, 255, 255, .14); background: rgba(12, 13, 16, .45); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); }
.hero-meta ul { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); }
.hero-meta li { padding: 22px 24px; border-left: 1px solid rgba(255, 255, 255, .12); font-size: .88rem; color: rgba(255, 255, 255, .7); line-height: 1.5; }
.hero-meta li:first-child { border-left: 0; padding-left: 0; }
.hero-meta strong { display: block; font-family: var(--serif); color: var(--white); font-weight: 500; font-size: 1.02rem; margin-bottom: 2px; }

/* ---------- 内页大图 ---------- */
.page-hero { position: relative; padding: clamp(90px, 12vw, 150px) 0 clamp(70px, 8vw, 100px); color: var(--white); background: var(--ink); overflow: hidden; }
.ph-bg { position: absolute; inset: 0; }
.ph-bg img { width: 100%; height: 100%; object-fit: cover; opacity: .5; }
.page-hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(100deg, rgba(12, 13, 16, .92) 0%, rgba(12, 13, 16, .55) 70%, rgba(12, 13, 16, .35) 100%); }
.page-hero .container { position: relative; z-index: 2; }
.page-hero h1 { color: var(--white); font-weight: 500; max-width: 860px; }
.page-hero .lead { max-width: 720px; color: rgba(255, 255, 255, .78); font-size: 1.08rem; }
.page-hero .hero-actions { margin-top: 30px; }
.breadcrumb { list-style: none; margin: 0 0 26px; padding: 0; display: flex; flex-wrap: wrap; gap: 4px 0; font-size: .82rem; letter-spacing: .08em; color: rgba(255, 255, 255, .55); }
.breadcrumb li + li::before { content: "/"; margin: 0 12px; color: rgba(255, 255, 255, .3); }
.breadcrumb a { color: rgba(255, 255, 255, .72); }
.breadcrumb a:hover { color: var(--brass-2); }

/* ---------- 布局 ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(40px, 6vw, 96px); align-items: center; }
.split.wide-img { grid-template-columns: 1.15fr .85fr; }
.split-media { position: relative; }
.split-media img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.split-media.framed::before { content: ""; position: absolute; inset: 22px -22px -22px 22px; border: 1px solid var(--brass); z-index: -1; }
.split-media .tag { position: absolute; left: -1px; bottom: -1px; background: var(--ink); color: var(--white); padding: 20px 26px; max-width: 70%; }
.split-media .tag strong { display: block; font-family: var(--serif); color: var(--brass-2); font-weight: 500; font-size: 1.1rem; }
.split-media .tag span { font-size: .85rem; color: rgba(255, 255, 255, .7); }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

/* ---------- 资质条 ---------- */
.cred-strip { background: var(--ink-2); color: rgba(255, 255, 255, .72); }
.cred-strip ul { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); }
.cred-strip li { padding: 34px 26px; border-left: 1px solid rgba(255, 255, 255, .08); display: flex; gap: 16px; align-items: flex-start; font-size: .9rem; line-height: 1.6; }
.cred-strip li:first-child { border-left: 0; }
.cred-strip svg { width: 30px; height: 30px; color: var(--brass-2); margin-top: 2px; }
.cred-strip strong { display: block; color: var(--white); font-family: var(--serif); font-weight: 500; font-size: 1.02rem; margin-bottom: 4px; }

/* ---------- 服务卡片 ---------- */
.svc-card { position: relative; display: block; background: var(--white); border: 1px solid var(--line); color: var(--text); overflow: hidden; transition: var(--transition); }
.svc-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); color: var(--text); border-color: transparent; }
.svc-card .img { overflow: hidden; aspect-ratio: 16 / 10; }
.svc-card .img img { width: 100%; height: 100%; object-fit: cover; transition: transform 1s cubic-bezier(.2, .7, .2, 1); }
.svc-card:hover .img img { transform: scale(1.06); }
.svc-card .body { padding: 28px 28px 30px; }
.svc-card .num { font-family: var(--latin); font-style: italic; color: var(--brass); font-size: 1.05rem; letter-spacing: .1em; }
.svc-card h3 { margin: 6px 0 10px; }
.svc-card p { color: var(--muted); font-size: .94rem; margin-bottom: 16px; }

/* 无图服务卡片 */
.feature { padding: 36px 32px; background: var(--white); border: 1px solid var(--line); transition: var(--transition); }
.feature:hover { border-color: var(--brass); }
.feature .ic { width: 52px; height: 52px; display: grid; place-items: center; border: 1px solid var(--brass); color: var(--brass); margin-bottom: 22px; }
.feature .ic svg { width: 24px; height: 24px; }
.feature h3 { font-size: 1.18rem; }
.feature p { color: var(--muted); font-size: .94rem; margin: 0; }
.bg-ink .feature { background: var(--ink-2); border-color: rgba(255, 255, 255, .08); }
.bg-ink .feature p { color: rgba(255, 255, 255, .62); }
.bg-ink .feature:hover { border-color: var(--brass-2); }

/* ---------- 编号要点 ---------- */
.pillars { counter-reset: p; display: grid; grid-template-columns: repeat(2, 1fr); gap: 0; border-top: 1px solid var(--line); }
.pillar { counter-increment: p; padding: 34px 34px 34px 0; border-bottom: 1px solid var(--line); display: grid; grid-template-columns: 64px 1fr; gap: 10px; }
.pillar:nth-child(even) { padding-left: 34px; border-left: 1px solid var(--line); }
.pillar::before { content: counter(p, decimal-leading-zero); font-family: var(--latin); font-size: 2rem; color: var(--brass); line-height: 1; }
.pillar h3 { font-size: 1.15rem; margin-bottom: 8px; }
.pillar p { color: var(--muted); font-size: .94rem; margin: 0; }

/* ---------- 流程 ---------- */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: rgba(255, 255, 255, .1); border: 1px solid rgba(255, 255, 255, .1); }
.steps li { background: var(--ink); padding: 38px 32px; }
.steps .no { font-family: var(--latin); font-size: 2.6rem; color: var(--brass-2); line-height: 1; display: block; margin-bottom: 18px; }
.steps h3 { color: var(--white); font-size: 1.15rem; }
.steps p { color: rgba(255, 255, 255, .62); font-size: .93rem; margin: 0; }
.bg-stone .steps, .steps.light { background: var(--line); border-color: var(--line); }
.bg-stone .steps li, .steps.light li { background: var(--white); }
.bg-stone .steps h3, .steps.light h3 { color: var(--ink); }
.bg-stone .steps p, .steps.light p { color: var(--muted); }
.bg-stone .steps .no, .steps.light .no { color: var(--brass); }

/* ---------- 项目作品 ---------- */
.project-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 20px; }
.project { margin: 0; position: relative; overflow: hidden; color: var(--white); grid-column: span 4; aspect-ratio: 4 / 3.2; background: var(--ink); }
.project.wide { grid-column: span 8; aspect-ratio: auto; }
.project.half { grid-column: span 6; }
.project img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform 1.1s cubic-bezier(.2, .7, .2, 1), opacity .5s; opacity: .9; }
.project:hover img { transform: scale(1.05); opacity: .7; }
.project figcaption { position: absolute; left: 0; right: 0; bottom: 0; padding: 26px 26px 24px; background: linear-gradient(0deg, rgba(10, 11, 14, .88), rgba(10, 11, 14, 0)); }
.project figcaption span { font-family: var(--latin); font-style: italic; color: var(--brass-2); font-size: .98rem; letter-spacing: .08em; }
.project figcaption h3 { color: var(--white); font-size: 1.15rem; margin: 2px 0 0; font-weight: 500; }
.project figcaption p { color: rgba(255, 255, 255, .7); font-size: .86rem; margin: 6px 0 0; line-height: 1.6; }
.img-note { font-size: .8rem; color: var(--muted); margin-top: 18px; }
.bg-ink .img-note { color: rgba(255, 255, 255, .45); }

/* ---------- 引言 ---------- */
.quote-block { max-width: 900px; margin: 0 auto; text-align: center; }
.quote-block blockquote { margin: 0; font-family: var(--serif); font-size: clamp(1.3rem, 2.4vw, 1.9rem); line-height: 1.7; color: var(--ink); font-weight: 500; }
.quote-block blockquote::before { content: "“"; display: block; font-family: var(--latin); font-size: 5rem; line-height: .6; color: var(--brass); margin-bottom: 18px; }
.quote-block cite { display: block; margin-top: 22px; font-style: normal; color: var(--muted); letter-spacing: .14em; font-size: .88rem; }

/* ---------- 正文内容 ---------- */
.content-layout { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: clamp(40px, 5vw, 72px); align-items: start; }
.prose { font-size: 1.02rem; }
.prose h2 { font-size: clamp(1.45rem, 2.4vw, 1.9rem); margin-top: 1.8em; padding-top: .2em; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { margin-top: 1.6em; font-size: 1.2rem; }
.prose ul, .prose ol { margin: 0 0 1.4em; }
.prose li { margin-bottom: .55em; }
.prose li::marker { color: var(--brass); }
.prose strong { color: var(--ink); }
.prose figure { margin: 2em 0; }
.prose figure img { width: 100%; }
.prose figcaption { font-size: .85rem; color: var(--muted); margin-top: 10px; padding-left: 14px; border-left: 1px solid var(--brass); }
.prose .lead-p { font-size: 1.15rem; color: var(--ink); font-family: var(--serif); line-height: 1.85; }
.note { background: var(--stone); border-left: 2px solid var(--brass); padding: 22px 26px; margin: 1.8em 0; font-size: .96rem; }
.note strong:first-child { display: block; font-family: var(--serif); margin-bottom: 4px; }
.check-list { list-style: none; padding: 0; }
.check-list li { position: relative; padding-left: 30px; }
.check-list li::before { content: ""; position: absolute; left: 2px; top: .7em; width: 12px; height: 6px; border-left: 1.5px solid var(--brass); border-bottom: 1.5px solid var(--brass); transform: rotate(-45deg); }
.table-wrap { overflow-x: auto; margin: 1.6em 0; border: 1px solid var(--line); }
table { width: 100%; border-collapse: collapse; font-size: .94rem; min-width: 560px; }
th, td { padding: 14px 18px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
th { background: var(--ink); color: var(--white); font-weight: 500; letter-spacing: .06em; }
tr:last-child td { border-bottom: 0; }
tbody tr:nth-child(even) td { background: var(--stone); }

/* 侧栏 */
.sidebar { position: sticky; top: 110px; display: grid; gap: 22px; }
.side-card { border: 1px solid var(--line); background: var(--white); padding: 28px; }
.side-card h3 { font-size: 1.08rem; padding-bottom: 12px; border-bottom: 1px solid var(--line); margin-bottom: 14px; }
.side-card ul { list-style: none; margin: 0; padding: 0; }
.side-card li a { display: flex; justify-content: space-between; padding: 9px 0; color: var(--text); font-size: .94rem; border-bottom: 1px dashed var(--line); }
.side-card li:last-child a { border-bottom: 0; }
.side-card li a::after { content: "→"; color: var(--brass); opacity: 0; transition: var(--transition); }
.side-card li a:hover { color: var(--brass); padding-left: 6px; }
.side-card li a:hover::after { opacity: 1; }
.side-card li a[aria-current="page"] { color: var(--brass); }
.side-dark { background: var(--ink); border-color: var(--ink); color: rgba(255, 255, 255, .72); }
.side-dark h3 { color: var(--white); border-color: rgba(255, 255, 255, .12); }
.side-dark p { font-size: .92rem; }
.big-phone { display: block; font-family: var(--latin); font-size: 1.9rem; font-weight: 600; color: var(--brass-2); margin: 6px 0 16px; letter-spacing: .03em; }
.big-phone:hover { color: var(--white); }

/* ---------- FAQ ---------- */
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { list-style: none; cursor: pointer; padding: 24px 48px 24px 0; position: relative; font-family: var(--serif); font-size: 1.1rem; color: var(--ink); font-weight: 500; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 6px; top: 50%; transform: translateY(-50%); font-family: var(--latin); font-size: 1.8rem; color: var(--brass); transition: transform .3s; }
.faq details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq .answer { padding: 0 48px 26px 0; color: var(--muted); }
.faq .answer p:last-child { margin: 0; }
.faq-group + .faq-group { margin-top: 56px; }
.faq-group > h2 { font-size: 1.4rem; }

/* ---------- 文章卡片 ---------- */
.post-card { display: flex; flex-direction: column; background: var(--white); border: 1px solid var(--line); color: var(--text); transition: var(--transition); }
.post-card:hover { box-shadow: var(--shadow); transform: translateY(-4px); color: var(--text); }
.post-card .img { aspect-ratio: 16 / 9; overflow: hidden; }
.post-card .img img { width: 100%; height: 100%; object-fit: cover; }
.post-card .body { padding: 26px 26px 30px; flex: 1; display: flex; flex-direction: column; }
.post-card .cat { font-size: .78rem; letter-spacing: .16em; color: var(--brass); margin-bottom: 8px; }
.post-card h3 { font-size: 1.15rem; }
.post-card h2 { font-size: 1.3rem; }
.post-card p { color: var(--muted); font-size: .92rem; flex: 1; }
.article-meta { display: flex; flex-wrap: wrap; gap: 6px 22px; font-size: .85rem; color: rgba(255, 255, 255, .6); margin-top: 18px; letter-spacing: .06em; }

/* ---------- 地区 ---------- */
.area-card { padding: 34px 30px; border: 1px solid var(--line); background: var(--white); }
.area-card .en { font-family: var(--latin); font-style: italic; color: var(--brass); font-size: 1.1rem; }
.area-card h3 { margin: 2px 0 12px; }
.area-card p { color: var(--muted); font-size: .94rem; }
.area-dark { background: var(--ink); border-color: var(--ink); }
.area-dark h3 { color: var(--white); }
.area-dark p { color: rgba(255, 255, 255, .72); }
.area-dark a { color: var(--brass-2); }
.area-dark a:hover { color: var(--white); }
.area-card ul { margin: 0; padding-left: 1.1em; color: var(--muted); font-size: .9rem; }

/* ---------- 底部咨询横幅 ---------- */
.cta-band { position: relative; background: var(--ink); color: rgba(255, 255, 255, .75); padding: clamp(44px, 6vw, 72px); display: grid; grid-template-columns: 1.4fr 1fr; gap: 40px; align-items: center; overflow: hidden; }
.cta-band::before { content: ""; position: absolute; top: 18px; left: 18px; right: 18px; bottom: 18px; border: 1px solid rgba(200, 164, 107, .25); pointer-events: none; }
.cta-band h2 { color: var(--white); font-weight: 500; }
.cta-band p { margin: 0; }
.cta-actions { display: flex; flex-direction: column; align-items: flex-start; gap: 14px; position: relative; }
.cta-phone { font-family: var(--latin); font-size: clamp(1.8rem, 3vw, 2.5rem); color: var(--brass-2); font-weight: 600; letter-spacing: .03em; line-height: 1.1; }
.cta-phone:hover { color: var(--white); }
.cta-actions .row { display: flex; flex-wrap: wrap; gap: 12px; }

/* ---------- 联系 ---------- */
.contact-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(32px, 5vw, 64px); align-items: start; }
.info-card { background: var(--ink); color: rgba(255, 255, 255, .72); padding: clamp(32px, 4vw, 48px); }
.info-card h2 { color: var(--white); font-size: 1.6rem; margin-bottom: 4px; }
.info-card > p { font-family: var(--latin); font-style: italic; color: var(--brass-2); letter-spacing: .08em; }
.info-row { display: flex; gap: 18px; padding: 20px 0; border-bottom: 1px solid rgba(255, 255, 255, .08); }
.info-row .ic { width: 44px; height: 44px; border: 1px solid rgba(200, 164, 107, .5); display: grid; place-items: center; color: var(--brass-2); flex-shrink: 0; }
.info-row .ic svg { width: 19px; height: 19px; }
.info-row span { display: block; font-size: .78rem; letter-spacing: .14em; color: rgba(255, 255, 255, .5); }
.info-row a, .info-row strong { color: var(--white); font-weight: 400; font-size: 1.04rem; }
.info-row a:hover { color: var(--brass-2); }
.map-frame { margin-top: 26px; border: 0; width: 100%; height: 240px; filter: grayscale(.9) contrast(1.05); }
.form-card { background: var(--white); border: 1px solid var(--line); padding: clamp(28px, 4vw, 48px); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: .85rem; letter-spacing: .08em; margin-bottom: 8px; color: var(--ink); }
.req { color: #a5432f; }
.contact-form input, .contact-form select, .contact-form textarea {
  width: 100%; padding: 14px 16px; border: 1px solid var(--line); background: var(--paper);
  font: inherit; font-size: .96rem; color: var(--text); border-radius: var(--radius); transition: border-color .3s, background .3s;
}
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus { outline: none; border-color: var(--brass); background: var(--white); }
.contact-form textarea { min-height: 150px; resize: vertical; }
.form-foot { font-size: .82rem; color: var(--muted); margin-top: 14px; }

/* ---------- 页脚 ---------- */
footer { background: var(--dark-color); color: var(--white); padding: 5rem 0 1.5rem; margin-top: 0; }
.footer-content { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.1fr; gap: 2.5rem; margin-bottom: 3rem; }
.footer-section h3 { color: var(--white); margin-bottom: 1.2rem; font-size: 1.05rem; font-weight: 500; letter-spacing: .1em; }
.footer-section p, .footer-section a { color: rgba(255, 255, 255, .7); line-height: 1.9; font-size: .92rem; }
.footer-section a:hover { color: var(--accent-color); }
.footer-brand { display: flex; align-items: center; gap: 14px; margin-bottom: 18px; }
.footer-brand .logo-en { color: var(--white); }
.footer-links { list-style: none; margin: 0; padding: 0; }
.footer-bottom { text-align: center; padding-top: 2rem; border-top: 1px solid rgba(255, 255, 255, .1); color: rgba(255, 255, 255, .55); font-size: .86rem; }
.footer-bottom p { margin-bottom: .5rem; }
.footer-bottom a { color: rgba(255, 255, 255, .7); }
.footer-disclaimer { max-width: 900px; margin: 0 auto 1.2rem !important; font-size: .8rem; line-height: 1.8; color: rgba(255, 255, 255, .42); }
.footer-partner { margin-top: 1rem; font-size: .9rem; color: rgba(255, 255, 255, .7); }
.footer-partner a { color: var(--accent-color); text-decoration: none; transition: var(--transition); }
.footer-partner a:hover { color: var(--white); }

/* ---------- 手机底栏 ---------- */
.mobile-call { display: none; }

/* ---------- 进入动画 ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .9s cubic-bezier(.2, .7, .2, 1), transform .9s cubic-bezier(.2, .7, .2, 1); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero-slides img { animation: none; opacity: 0; }
  .hero-slides img:first-child { opacity: 1; }
  html { scroll-behavior: auto; }
}

/* ---------- 404 ---------- */
.notfound { text-align: center; padding: clamp(90px, 14vw, 180px) 0; }
.notfound .big { font-family: var(--latin); font-size: clamp(5rem, 14vw, 9rem); color: var(--brass); line-height: 1; }

/* ==========================================================
   响应式
   ========================================================== */
@media (max-width: 1320px) {
  .nav-phone div { display: none; }
  .nav-menu > li > a { padding-left: 10px; padding-right: 10px; font-size: .9rem; }
}
@media (max-width: 1024px) {
  .nav-toggle { display: flex; }
  .nav-menu {
    position: fixed; top: 0; right: 0; height: 100vh; height: 100dvh; width: min(86vw, 380px);
    background: var(--paper); flex-direction: column; align-items: stretch; gap: 0;
    padding: 90px 28px 40px; overflow-y: auto; transform: translateX(100%); transition: transform .4s cubic-bezier(.2, .7, .2, 1); z-index: 120;
    box-shadow: -20px 0 60px -30px rgba(0, 0, 0, .5);
  }
  .nav-menu.open { transform: none; }
  .nav-menu > li > a { padding: 16px 4px; border-bottom: 1px solid var(--line); }
  .nav-menu > li > a::after { display: none; }
  .mega { position: static; transform: none; width: auto; opacity: 1; visibility: visible; box-shadow: none; border: 0; padding: 6px 0 10px 10px; display: none; grid-template-columns: 1fr; background: transparent; }
  .has-drop.open .mega { display: grid; }
  .has-drop:hover .mega { transform: none; }
  .mega h5 { display: none; }
  .mega a small { display: none; }
  .nav-backdrop { position: fixed; inset: 0; background: rgba(10, 11, 14, .5); z-index: 110; opacity: 0; visibility: hidden; transition: opacity .3s; display: block; }
  .nav-backdrop.show { opacity: 1; visibility: visible; }
  .nav-toggle { position: relative; z-index: 130; }
  body.nav-open { overflow: hidden; }
  .split, .split.wide-img, .contact-grid, .content-layout, .cta-band { grid-template-columns: minmax(0, 1fr); }
  .split-media.framed::before { inset: 14px -14px -14px 14px; }
  .sidebar { position: static; }
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .cred-strip ul { grid-template-columns: repeat(2, 1fr); }
  .cred-strip li:nth-child(3) { border-left: 0; }
  .cred-strip li { border-top: 1px solid rgba(255, 255, 255, .08); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .project, .project.half { grid-column: span 6; }
  .project.wide { grid-column: span 12; aspect-ratio: 16 / 9; }
  .footer-content { grid-template-columns: 1fr 1fr; }
  .hero-meta ul { grid-template-columns: repeat(2, 1fr); }
  .hero-meta li:nth-child(3) { border-left: 0; padding-left: 0; }
}
@media (max-width: 760px) {
  body { font-size: 15.5px; padding-bottom: 62px; }
  .container { padding: 0 18px; }
  .topbar-note { display: none; }
  .topbar .container { justify-content: center; }
  .topbar-links { gap: 18px; font-size: .78rem; }
  .topbar-links li:last-child { display: none; }
  .nav { min-height: 70px; }
  .logo img { width: 38px; height: 38px; }
  .logo-en { font-size: 1.15rem; letter-spacing: .12em; }
  .logo-cn { font-size: .62rem; letter-spacing: .3em; }
  .nav-phone { display: none; }
  .hero { min-height: auto; flex-direction: column; align-items: stretch; }
  .hero > .container { padding-top: 64px; padding-bottom: 48px; }
  .hero::after { background: linear-gradient(180deg, rgba(12, 13, 16, .7), rgba(12, 13, 16, .88)); }
  .hero-meta { position: relative; }
  .hero-meta li { padding: 16px 14px; font-size: .8rem; }
  .hero-meta li:nth-child(odd) { border-left: 0; padding-left: 0; }
  .grid-2, .grid-3, .grid-4, .pillars, .form-row, .footer-content { grid-template-columns: 1fr; }
  .pillar, .pillar:nth-child(even) { padding: 26px 0; border-left: 0; grid-template-columns: 52px 1fr; }
  .cred-strip ul { grid-template-columns: 1fr; }
  .cred-strip li { border-left: 0; padding: 22px 0; }
  .steps { grid-template-columns: 1fr; }
  .project, .project.half, .project.wide { grid-column: span 12; aspect-ratio: 4 / 3; }
  .split-media .tag { position: relative; max-width: none; }
  .split-media.framed::before { display: none; }
  .cta-band::before { inset: 10px; }
  .btn { padding: 14px 22px; }
  .hero-actions .btn { flex: 1 1 100%; }
  .faq summary { font-size: 1rem; padding-right: 36px; }
  .faq .answer { padding-right: 0; }
  .mobile-call { display: grid; grid-template-columns: 1fr 1fr; position: fixed; left: 0; right: 0; bottom: 0; z-index: 90; box-shadow: 0 -8px 24px -12px rgba(0, 0, 0, .35); }
  .mobile-call a { padding: 18px 10px; text-align: center; font-size: .95rem; letter-spacing: .1em; color: var(--white); }
  .mobile-call .call { background: var(--brass); }
  .mobile-call .msg { background: var(--ink); }
}