:root {
  --ink: #111511;
  --paper: #f7f4ed;
  --muted: #687067;
  --line: rgba(17, 21, 17, .12);
  --panel: #fff;
  --deep: #101612;
  --deep-2: #172019;
  --gold: #c6a05a;
  --green: #31483a;
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scrollbar-gutter: stable; }
body { margin: 0; color: var(--ink); background: var(--paper); line-height: 1.7; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.wrap { width: min(1180px, calc(100% - 32px)); margin: 0 auto; }
.topbar { position: sticky; top: 0; z-index: 20; background: #fff; box-shadow: 0 8px 24px rgba(17,21,17,.08); }
.top-strip { background: var(--deep); color: rgba(255,255,255,.74); font-size: 13px; }
.top-strip .wrap { min-height: 34px; display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.top-strip strong { color: var(--gold); }
.brand-row { border-bottom: 1px solid var(--line); background: #fff; }
.brand-row .wrap { min-height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 13px; }
.brand-logo { display: block; width: min(360px, 42vw); height: 58px; object-fit: contain; object-position: left center; }
.brand-mark { width: 54px; height: 54px; flex: 0 0 54px; display: grid; place-items: center; border: 1px solid rgba(198,160,90,.65); background: var(--deep); color: var(--gold); font-family: Georgia, serif; font-weight: 800; border-radius: 6px; }
.brand-title { display: block; font-size: 25px; font-weight: 900; line-height: 1.15; }
.brand-sub { display: block; color: var(--muted); font-size: 13px; }
.hotline { display: grid; gap: 2px; min-width: 260px; text-align: right; color: var(--muted); font-size: 13px; line-height: 1.35; }
.hotline a { color: var(--gold); font-size: 26px; font-weight: 900; line-height: 1.1; }
.nav-bar { background: var(--deep-2); color: #fff; }
.nav-links { min-height: 48px; display: flex; align-items: center; justify-content: center; gap: 0; overflow-x: auto; }
.nav-links a { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; padding: 0 21px; color: rgba(255,255,255,.9); border-left: 1px solid rgba(255,255,255,.08); white-space: nowrap; line-height: 1.7; }
.nav-links a:last-child { border-right: 1px solid rgba(255,255,255,.08); }
.nav-links a.active, .nav-links a:hover { color: var(--gold); background: rgba(255,255,255,.05); }
.nav-links .nav-cta { background: var(--gold); color: #17130b; font-weight: 900; }
.page-hero { color: #fff; background: linear-gradient(90deg, rgba(16,22,18,.96), rgba(16,22,18,.78)), url("images2/hero-marketing.png") center / cover; padding: 88px 0 76px; }
.crumb { color: rgba(255,255,255,.65); font-size: 14px; margin-bottom: 18px; }
.page-hero h1 { max-width: 860px; margin: 0; font-size: clamp(36px, 5vw, 58px); line-height: 1.12; }
.page-hero p { max-width: 760px; margin: 18px 0 0; color: rgba(255,255,255,.75); font-size: 17px; }
section { padding: 70px 0; }
.section-head { text-align: center; margin-bottom: 30px; }
.section-head h2 { margin: 0; font-size: clamp(28px, 3.6vw, 42px); line-height: 1.18; }
.section-head p { max-width: 780px; margin: 14px auto 0; color: var(--muted); }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.card, .article-card { background: var(--panel); border: 1px solid var(--line); border-top: 3px solid var(--gold); border-radius: 4px; padding: 24px; box-shadow: 0 14px 32px rgba(17,21,17,.05); }
.card small, .article-card small { color: var(--gold); font-weight: 900; }
.card h3, .article-card h3 { margin: 10px 0 8px; font-size: 22px; line-height: 1.28; }
.card p, .article-card p { margin: 0; color: var(--muted); }
.split { display: grid; grid-template-columns: .9fr 1.1fr; gap: 28px; align-items: start; }
.breadcrumb-bar { padding: 16px 0; background: #fff; border-bottom: 1px solid var(--line); color: var(--muted); font-size: 14px; }
.breadcrumb-bar a { color: var(--green); font-weight: 700; }
.service-photo-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.service-photo-card { overflow: hidden; background: #fff; border: 1px solid var(--line); border-radius: 4px; box-shadow: 0 14px 32px rgba(17,21,17,.06); }
.service-photo-card figure { margin: 0; aspect-ratio: 4 / 3; background: #151b16; overflow: hidden; }
.service-photo-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .24s ease; }
.service-photo-card:hover img { transform: scale(1.035); }
.service-photo-card div { padding: 20px; }
.service-photo-card small { color: var(--gold); font-weight: 900; }
.service-photo-card h3 { margin: 8px 0 8px; font-size: 22px; line-height: 1.25; }
.service-photo-card p { margin: 0; color: var(--muted); }
.case-category { margin-bottom: 42px; }
.case-category:last-child { margin-bottom: 0; }
.case-category-head { display: flex; align-items: end; justify-content: space-between; gap: 18px; margin-bottom: 18px; border-bottom: 1px solid var(--line); padding-bottom: 14px; }
.case-category-head h2 { margin: 0; font-size: clamp(26px, 3vw, 38px); line-height: 1.2; }
.case-category-head p { margin: 0; color: var(--muted); max-width: 560px; }
.case-list-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.case-slider { position: relative; }
.case-slider-viewport { overflow: hidden; }
.case-slider-track { display: flex; gap: 18px; transition: transform .32s ease; }
.case-slider .case-list-card { flex: 0 0 calc((100% - 36px) / 3); }
.case-slider-controls { display: flex; justify-content: flex-end; gap: 10px; margin-top: 14px; }
.case-slider-controls button { width: 40px; height: 40px; border: 1px solid var(--line); border-radius: 50%; background: #fff; color: var(--deep); cursor: pointer; font-size: 22px; line-height: 1; }
.case-slider-controls button:hover { background: var(--deep); color: var(--gold); }
.case-list-card { background: #fff; border: 1px solid var(--line); border-radius: 4px; overflow: hidden; box-shadow: 0 14px 32px rgba(17,21,17,.06); }
.case-list-card img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.case-list-card div { padding: 18px; }
.case-list-card small { color: var(--gold); font-weight: 900; }
.case-list-card h3 { margin: 8px 0 6px; font-size: 20px; line-height: 1.3; }
.case-list-card p { margin: 0; color: var(--muted); font-size: 14px; }
.case-carousel { position: relative; overflow: hidden; }
.case-track { display: flex; transition: transform .36s ease; }
.case-slide { flex: 0 0 100%; display: grid; grid-template-columns: 1.05fr .95fr; min-height: 430px; background: #fff; border: 1px solid var(--line); border-radius: 4px; overflow: hidden; box-shadow: 0 14px 34px rgba(17,21,17,.08); }
.case-slide img { width: 100%; height: 100%; min-height: 430px; object-fit: cover; }
.case-slide-copy { display: grid; align-content: center; padding: 42px; }
.case-slide-copy small { color: var(--gold); font-weight: 900; margin-bottom: 12px; }
.case-slide-copy h3 { margin: 0 0 14px; font-size: clamp(28px, 3.6vw, 44px); line-height: 1.12; }
.case-slide-copy p { margin: 0 0 22px; color: var(--muted); }
.case-carousel-controls { display: flex; justify-content: center; gap: 10px; margin-top: 18px; }
.case-carousel-controls button { width: 44px; height: 44px; border: 1px solid var(--line); border-radius: 50%; background: #fff; color: var(--deep); cursor: pointer; font-size: 24px; line-height: 1; }
.case-carousel-controls button:hover { background: var(--deep); color: var(--gold); }
.about-band { background: #fff; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.about-feature { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; align-items: center; }
.about-feature img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 4px; box-shadow: 0 18px 42px rgba(17,21,17,.12); }
.about-copy h2 { margin: 0 0 14px; font-size: clamp(28px, 3.5vw, 42px); line-height: 1.18; }
.about-copy p { color: var(--muted); margin: 0 0 14px; }
.about-stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.about-stat { background: var(--deep); color: #fff; border-radius: 4px; padding: 24px; min-height: 150px; }
.about-stat b { display: block; color: var(--gold); font-size: 38px; line-height: 1; margin-bottom: 10px; }
.about-stat span { color: rgba(255,255,255,.7); }
.capability-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.capability-card { min-height: 320px; position: relative; overflow: hidden; border-radius: 4px; color: #fff; background: var(--deep); }
.capability-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .72; }
.capability-card div { position: absolute; inset: auto 0 0 0; padding: 28px; background: linear-gradient(0deg, rgba(16,22,18,.94), rgba(16,22,18,0)); }
.capability-card small { color: var(--gold); font-weight: 900; }
.capability-card h3 { margin: 8px 0; font-size: 26px; line-height: 1.2; }
.capability-card p { margin: 0; color: rgba(255,255,255,.74); }
.timeline { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; counter-reset: timeline; }
.timeline-item { position: relative; background: #fff; border: 1px solid var(--line); border-radius: 4px; padding: 24px; min-height: 190px; }
.timeline-item::before { counter-increment: timeline; content: "0" counter(timeline); display: block; color: var(--gold); font-size: 34px; font-weight: 900; line-height: 1; margin-bottom: 16px; }
.timeline-item h3 { margin: 0 0 8px; font-size: 21px; }
.timeline-item p { margin: 0; color: var(--muted); }
.promise-list { display: grid; gap: 12px; }
.promise-item { display: grid; grid-template-columns: 42px 1fr; gap: 14px; align-items: start; background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.12); border-radius: 4px; padding: 20px; }
.promise-item b { width: 42px; height: 42px; border-radius: 50%; display: grid; place-items: center; background: var(--gold); color: #17130b; }
.promise-item strong { display: block; margin-bottom: 4px; font-size: 19px; }
.promise-item span { color: rgba(255,255,255,.68); }
.message-form { display: grid; gap: 12px; background: #fff; border: 1px solid var(--line); border-radius: 4px; padding: 24px; box-shadow: 0 14px 32px rgba(17,21,17,.06); }
.message-form label { display: grid; gap: 6px; color: var(--muted); font-size: 14px; font-weight: 700; }
.message-form input, .message-form textarea, .message-form select { width: 100%; border: 1px solid var(--line); border-radius: 4px; padding: 12px 13px; font: inherit; color: var(--ink); background: #fff; }
.message-form textarea { min-height: 132px; resize: vertical; }
.captcha-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.captcha-row input { width: 120px; min-width: 80px; flex: 1; max-width: 180px; }
.captcha-row img { flex: 0 0 168px; border: 1px solid var(--line); border-radius: 4px; }
.captcha-refresh { flex: 0 0 38px; width: 38px; height: 42px; font-size: 24px; background: #eef1ed; border-radius: 4px; }
.spam-trap { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.form-feedback { padding: 14px 16px; border: 1px solid #bacbbd; background: #edf5ed; }
.form-feedback.error { border-color: #e2beb6; background: #fff3ef; }
.article-body { line-height: 1.9; overflow-wrap: anywhere; font-size: 16px; }
.article-body img { max-width: 100%; height: auto; display: inline-block; }
.article-body p { margin: 1em 0; }
.article-body h2 { font-size: 26px; margin: 1.5em 0 .7em; }
.article-body h3 { font-size: 22px; }
.article-body h4 { font-size: 19px; }
.article-body blockquote { border-left: 3px solid var(--gold); padding-left: 20px; margin-left: 0; color: var(--muted); }
.article-body a { color: #31593b; text-decoration: underline; }
.article-body pre { overflow-x: auto; background: #f0f2ef; padding: 16px; }
.article-meta { display: flex; gap: 16px; flex-wrap: wrap; font-size: 14px; color: var(--muted); }
.article-cover { width: 100%; height: auto; border-radius: 4px; margin: 24px 0; }
.news-cover { aspect-ratio: 16 / 9; width: 100%; object-fit: cover; margin-bottom: 18px; }
.pagination { display: flex; justify-content: center; gap: 8px; margin: 28px 0; flex-wrap: wrap; }
.pagination a,.pagination span { display: inline-flex; align-items: center; justify-content: center; min-width: 38px; min-height: 38px; padding: 0 12px; border: 1px solid var(--line); border-radius: 4px; }
.pagination [aria-current] { background: var(--deep); color: var(--gold); }
.message-form button { border: 0; cursor: pointer; }
.side-menu { background: var(--deep); color: #fff; border-radius: 4px; overflow: hidden; }
.side-menu h3 { margin: 0; padding: 18px 22px; background: var(--gold); color: #17130b; font-size: 22px; }
.side-menu a { display: block; padding: 15px 22px; border-bottom: 1px solid rgba(255,255,255,.1); color: rgba(255,255,255,.82); font-weight: 700; }
.side-menu a:hover { color: var(--gold); background: rgba(255,255,255,.05); }
.dark { background: var(--deep); color: #fff; }
.dark p { color: rgba(255,255,255,.68); }
.dark .card { color: var(--ink); }
.dark .card p { color: var(--muted); }
.steps { counter-reset: step; display: grid; gap: 12px; }
.step { background: #fff; border: 1px solid var(--line); border-radius: 4px; padding: 20px; }
.step::before { counter-increment: step; content: "0" counter(step); display: inline-grid; place-items: center; width: 36px; height: 36px; margin-bottom: 12px; background: var(--deep); color: var(--gold); border-radius: 50%; font-weight: 900; }
.contact-band { background: var(--deep-2); color: #fff; padding: 42px 0; }
.contact-band .wrap { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.contact-band h2 { margin: 0; font-size: clamp(25px, 3vw, 36px); line-height: 1.2; }
.button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; padding: 0 20px; background: var(--gold); color: #17130b; border-radius: 4px; font-weight: 900; }
.info-list { display: grid; gap: 12px; }
.info-item { background: #fff; border: 1px solid var(--line); border-radius: 4px; padding: 20px; }
.info-item b { display: block; margin-bottom: 6px; font-size: 18px; }
.info-item span, .info-item p { color: var(--muted); margin: 0; }
footer { background: #0b0f0c; color: rgba(255,255,255,.58); padding: 18px 0; font-size: 13px; line-height: 1.7; }
footer .wrap { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
footer a { color: rgba(255,255,255,.72); border-bottom: 1px solid rgba(198,160,90,.45); }
.footer-links { display: inline-flex; gap: 14px; flex-wrap: wrap; }
@media (max-width: 920px) {
  .top-strip .wrap { flex-direction: column; align-items: flex-start; gap: 4px; padding: 8px 0; }
  .brand-row .wrap { align-items: flex-start; padding: 12px 0; }
  .nav-links { justify-content: flex-start; }
  .grid, .split, .service-photo-grid, .about-feature, .case-list-grid, .about-stat-grid, .capability-layout, .timeline { grid-template-columns: 1fr; }
  .case-slide { grid-template-columns: 1fr; }
  .case-slide img { min-height: 260px; }
  .case-slide-copy { padding: 28px; }
  .case-slider .case-list-card { flex-basis: 100%; }
  .case-category-head { display: block; }
  .case-category-head p { margin-top: 8px; }
}
@media (max-width: 560px) {
  .top-strip .wrap span:first-child { display: none; }
  .brand-row .wrap { align-items: center; gap: 12px; }
  .brand-mark { width: 44px; height: 44px; flex-basis: 44px; }
  .brand-logo { width: min(230px, 58vw); height: 48px; }
  .brand-title { font-size: 19px; }
  .brand-sub { font-size: 11px; }
  .hotline { min-width: 0; text-align: right; font-size: 12px; }
  .hotline a { font-size: 19px; }
  .hotline span:last-child { display: none; }
  .page-hero { padding: 58px 0 52px; }
  section { padding: 54px 0; }
}