:root {
  --ink: #171512;
  --ink-soft: #25211c;
  --paper: #f2efe8;
  --paper-deep: #e5dfd4;
  --copper: #c7925b;
  --copper-bright: #e1b27c;
  --muted: #777067;
  --line: rgba(23, 21, 18, 0.16);
  --wrap: min(1240px, calc(100% - 48px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.65;
}
.scroll-progress { position: fixed; inset: 0 0 auto; z-index: 100; height: 3px; pointer-events: none; }
.scroll-progress span { display: block; width: 100%; height: 100%; background: var(--copper-bright); transform: scaleX(0); transform-origin: left; }
img { display: block; width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.wrap { width: var(--wrap); margin-inline: auto; }
.skip-link { position: fixed; left: 1rem; top: -5rem; z-index: 1000; padding: .8rem 1rem; background: white; color: black; }
.skip-link:focus { top: 1rem; }

.site-header {
  position: fixed; inset: 0 0 auto; z-index: 50; height: 86px;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 max(24px, calc((100vw - 1240px) / 2));
  color: white; border-bottom: 1px solid rgba(255,255,255,.17);
  transition: background .3s, height .3s, color .3s;
}
.site-header.scrolled { height: 70px; background: rgba(23,21,18,.96); backdrop-filter: blur(12px); }
.brand { display: inline-flex; align-items: center; gap: 11px; font-weight: 700; letter-spacing: .16em; }
.brand-mark { position: relative; display: flex; align-items: center; justify-content: center; width: 39px; height: 39px; color: white; font: 700 11px/1 Georgia, serif; letter-spacing: -.18em; isolation: isolate; }
.brand-mark::before { content: ""; position: absolute; inset: 4px; z-index: -1; border: 1px solid var(--copper); animation: markOrbit 14s linear infinite; }
.brand-mark::after { content: ""; position: absolute; inset: 0; z-index: -1; border: 1px solid rgba(199,146,91,.22); transform: rotate(45deg); }
.mark-o { display: inline-block; transform: scaleX(.8) skewX(-8deg); color: #f5eee4; }
.mark-x { display: inline-block; margin-left: 1px; transform: scaleX(1.12) skewX(8deg); color: var(--copper-bright); }
.brand:hover .brand-mark::before { animation-duration: 4s; }
.brand-name { font-size: 1.05rem; }
.brand-name span { color: var(--copper-bright); }
.site-nav { display: flex; align-items: center; gap: 28px; font-size: .86rem; }
.nav-home { display: none; }
.site-nav > a:not(.nav-cta) { opacity: .86; }
.site-nav > a:hover { opacity: 1; color: var(--copper-bright); }
.nav-cta { padding: 10px 17px; border: 1px solid rgba(255,255,255,.45); }
.language-toggle { padding: 0; border: 0; background: none; color: inherit; cursor: pointer; opacity: .85; }
.menu-toggle { display: none; width: 44px; height: 44px; border: 0; background: transparent; }
.menu-toggle span { display: block; width: 24px; height: 1px; background: white; margin: 7px auto; }

.hero { position: relative; min-height: 820px; height: 100svh; color: white; display: flex; align-items: center; overflow: hidden; background: #16130f; }
.hero-image { position: absolute; inset: 0; height: 100%; object-fit: cover; object-position: center 55%; animation: slowZoom 18s ease-out both; }
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(10,9,8,.88) 0%, rgba(10,9,8,.58) 48%, rgba(10,9,8,.25) 78%), linear-gradient(0deg, rgba(12,10,7,.65), transparent 45%); }
.hero-content { position: relative; z-index: 2; padding-top: 70px; }
.eyebrow { margin: 0 0 22px; color: var(--copper-bright); font-size: .74rem; font-weight: 700; letter-spacing: .22em; line-height: 1.4; }
.eyebrow.dark { color: #9b6638; }
h1, h2, h3 { margin: 0; font-family: Georgia, "Times New Roman", "Songti SC", serif; font-weight: 400; line-height: 1.08; }
h1 { max-width: 780px; font-size: clamp(3.6rem, 7.2vw, 7.5rem); letter-spacing: -.055em; }
html[lang^="zh"] h1 { max-width: 900px; font-size: clamp(3.4rem, 5.9vw, 6.4rem); line-height: 1.14; letter-spacing: -.045em; }
.hero-copy { max-width: 640px; margin: 30px 0 0; font-size: clamp(1.05rem, 1.5vw, 1.28rem); color: rgba(255,255,255,.82); }
.hero-actions { display: flex; align-items: center; gap: 28px; margin-top: 40px; }
.button { display: inline-flex; align-items: center; justify-content: space-between; gap: 34px; min-width: 220px; padding: 15px 20px; font-size: .86rem; font-weight: 650; letter-spacing: .03em; transition: transform .2s, background .2s; }
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--copper); color: var(--ink); }
.button-dark { background: var(--ink); color: white; }
.text-link { position: relative; font-size: .9rem; padding-bottom: 4px; border-bottom: 1px solid currentColor; }
.hero-rail { position: absolute; z-index: 2; right: 0; bottom: 0; display: grid; grid-template-columns: repeat(5, auto); background: rgba(18,15,12,.82); backdrop-filter: blur(12px); border-top: 1px solid rgba(255,255,255,.14); }
.hero-rail button { padding: 15px 24px; border: 0; border-left: 1px solid rgba(255,255,255,.12); background: transparent; color: rgba(255,255,255,.72); font-size: .7rem; letter-spacing: .12em; cursor: pointer; transition: color .2s, background .2s; }
.hero-rail button:hover, .hero-rail button:focus-visible { color: white; background: rgba(199,146,91,.2); outline: none; }

.intro { display: grid; grid-template-columns: 80px 1.1fr .8fr; gap: 42px; padding-block: 150px; }
.section-number { color: var(--copper); font: 1rem Georgia, serif; }
.intro h2, .section-heading h2, .process h2, .audience h2, .contact h2 { font-size: clamp(2.5rem, 4.4vw, 4.7rem); letter-spacing: -.045em; }
.intro-copy { padding-top: 48px; color: #5c564e; }
.intro-copy p { margin: 0 0 24px; }
.why-grid { grid-column: 2 / -1; display: grid; grid-template-columns: repeat(2, 1fr); margin-top: 45px; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.why-grid article { --pointer-x: 50%; --pointer-y: 50%; position: relative; min-height: 275px; padding: 34px; overflow: hidden; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); transition: transform .35s cubic-bezier(.2,.8,.2,1), color .3s, background .3s; }
.why-grid article::before { content: ""; position: absolute; inset: 0; pointer-events: none; opacity: 0; background: radial-gradient(circle at var(--pointer-x) var(--pointer-y), rgba(199,146,91,.25), transparent 46%); transition: opacity .3s; }
.why-grid article::after { content: ""; position: absolute; inset: 0 auto auto 0; width: 0; height: 3px; background: var(--copper); transition: width .35s ease; }
.why-grid article:hover, .why-grid article:focus-within { z-index: 1; transform: translateY(-6px); background: #fffdf8; box-shadow: 0 22px 50px rgba(31,25,19,.1); }
.why-grid article:hover::before, .why-grid article:focus-within::before { opacity: 1; }
.why-grid article:hover::after, .why-grid article:focus-within::after { width: 100%; }
.why-grid article > span { color: var(--copper); font-size: .72rem; letter-spacing: .12em; }
.why-grid h3 { margin-top: 28px; font-size: 1.75rem; }
.why-grid p { margin: 18px 0 0; color: var(--muted); }
.why-toggle { display: none; }

.solutions { padding-block: 135px; background: var(--ink); color: white; }
.section-heading { display: grid; grid-template-columns: 1.45fr .55fr; gap: 80px; align-items: end; margin-bottom: 78px; }
.section-heading > p { margin: 0 0 8px; color: #a9a198; }
.service-list { border-top: 1px solid rgba(255,255,255,.18); }
.service-item { display: grid; grid-template-columns: 70px 1fr 1.45fr .65fr; gap: 26px; align-items: center; min-height: 160px; border-bottom: 1px solid rgba(255,255,255,.18); transition: background .25s, padding .25s; }
.service-item:hover { padding-inline: 18px; background: rgba(255,255,255,.035); }
.service-index, .service-cn { color: var(--copper-bright); font-size: .72rem; letter-spacing: .13em; }
.service-item h3 { font-size: 2.5rem; }
.service-item p { color: #bcb5ac; margin: 0; max-width: 520px; }
.service-expand { display: none; }

.process { display: grid; grid-template-columns: .8fr 1.2fr; gap: 100px; padding-block: 150px; }
.process-lead > p:not(.eyebrow) { max-width: 510px; color: var(--muted); margin-top: 30px; }
.process-lead .process-support-note { margin-top: 20px; padding: 20px 0 0 24px; border-top: 1px solid var(--line); border-left: 3px solid var(--copper); color: #443d35; }
.process-steps { margin: 8px 0 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.process-steps li { display: grid; grid-template-columns: 64px 1fr; gap: 24px; padding: 29px 0; border-bottom: 1px solid var(--line); }
.process-steps li > span { color: var(--copper); font-size: .75rem; }
.process-steps h3 { font-size: 1.65rem; margin-bottom: 8px; }
.process-steps p { margin: 0; color: var(--muted); }

.cases { padding-block: 140px; background: #ddd6ca; }
.cases-heading { color: var(--ink); }
.cases-heading > p { color: #665e54; }
.case-card { display: grid; grid-template-columns: 1.03fr .97fr; min-height: 610px; margin-top: 28px; }
.case-dark { background: var(--ink-soft); color: white; }
.case-light { background: #f7f4ee; }
.case-image-wrap { position: relative; min-height: 500px; overflow: hidden; }
.case-image-wrap img { height: 100%; object-fit: cover; transition: transform .7s ease; }
.case-card:hover .case-image-wrap img { transform: scale(1.025); }
.case-label { position: absolute; left: 22px; bottom: 22px; padding: 9px 12px; background: rgba(16,14,12,.82); color: white; font-size: .67rem; letter-spacing: .14em; }
.case-content { display: flex; flex-direction: column; justify-content: center; padding: clamp(40px, 6vw, 82px); }
.case-kicker { margin: 0 0 28px; color: var(--copper); font-size: .78rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
.case-content h3 { font-size: clamp(2rem, 3vw, 3.5rem); }
.case-content > p:not(.case-kicker) { color: #aaa39a; margin: 28px 0; }
.case-light .case-content > p:not(.case-kicker) { color: var(--muted); }
.case-tags { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; margin: 0 0 34px; }
.case-tags li { border: 1px solid currentColor; padding: 6px 10px; font-size: .7rem; letter-spacing: .08em; opacity: .62; }
.light-link { align-self: flex-start; color: var(--copper-bright); }
.coming-soon { align-self: flex-start; border-top: 1px solid var(--line); padding-top: 16px; font-size: .72rem; letter-spacing: .14em; color: #8d653f; }

.audience { padding-block: 135px; background: #29241f; color: white; }
.audience-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 100px; }
.audience-list { border-top: 1px solid rgba(255,255,255,.18); }
.audience-list p { display: grid; grid-template-columns: 48px 1fr; margin: 0; padding: 24px 0; border-bottom: 1px solid rgba(255,255,255,.18); }
.audience-list span { color: var(--copper); font-size: .72rem; }
.audience-list strong { font-weight: 450; font-size: 1.15rem; }

.contact { padding-block: 145px; background: var(--copper); }
.contact-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 100px; }
.contact .eyebrow { color: rgba(23,21,18,.65); }
.contact-copy p { margin: 10px 0 30px; max-width: 520px; }
.contact-note { font-size: .8rem; color: rgba(23,21,18,.72); }

.site-footer { padding-block: 70px 45px; background: #11100e; color: white; }
.mobile-cta { display: none; }

.js .reveal { opacity: 0; transform: translateY(30px); transition: opacity .7s ease, transform .7s cubic-bezier(.2,.7,.2,1); }
.js .reveal.reveal-left { transform: translateX(-30px); }
.js .reveal.is-visible { opacity: 1; transform: none; }
.js .service-item.reveal:nth-child(2), .js .why-grid article.reveal:nth-child(2) { transition-delay: .08s; }
.js .service-item.reveal:nth-child(3), .js .why-grid article.reveal:nth-child(3) { transition-delay: .16s; }
.js .service-item.reveal:nth-child(4), .js .why-grid article.reveal:nth-child(4) { transition-delay: .24s; }
.js .service-item.reveal:nth-child(5) { transition-delay: .32s; }
.footer-main { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; }
.footer-brand { margin-bottom: 24px; }
.footer-main > div:first-child > p { color: #8e877e; }
.footer-stages { display: flex; justify-content: flex-end; align-items: flex-start; gap: 22px; font-size: .78rem; letter-spacing: .09em; color: var(--copper-bright); }
.footer-meta { grid-column: 1 / -1; display: flex; justify-content: space-between; gap: 30px; padding-top: 30px; border-top: 1px solid rgba(255,255,255,.15); color: #7f7972; font-size: .72rem; }
.footer-meta p { margin: 0; }
.photo-credit a { text-decoration: underline; }

@keyframes slowZoom { from { transform: scale(1.04); } to { transform: scale(1.11); } }
@keyframes markOrbit { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior: auto !important; animation: none !important; transition: none !important; } }

@media (max-width: 980px) {
  :root { --wrap: min(100% - 36px, 760px); }
  .site-header.scrolled { backdrop-filter: none; }
  .menu-toggle { display: block; position: relative; z-index: 60; cursor: pointer; }
  .site-nav { position: fixed; inset: 0; display: flex; flex-direction: column; justify-content: center; gap: 26px; background: var(--ink); transform: translateY(-102%); transition: transform .35s ease; font-size: 1.1rem; }
  .site-nav .nav-home { display: block; }
  .site-nav.open { transform: translateY(0); }
  .nav-cta { margin-top: 10px; }
  .hero { min-height: 760px; }
  .hero-rail { left: 0; grid-template-columns: repeat(5, 1fr); }
  .hero-rail button { padding: 13px 8px; text-align: center; font-size: .6rem; }
  .intro { grid-template-columns: 50px 1fr; padding-block: 110px; }
  .intro-copy { grid-column: 2; padding-top: 0; }
  .why-grid { grid-column: 2; grid-template-columns: 1fr; }
  .service-item { grid-template-columns: 45px 1fr; padding-block: 28px; }
  .service-item p, .service-cn { grid-column: 2; }
  .process, .audience-grid, .contact-grid { grid-template-columns: 1fr; gap: 60px; }
  .case-card { grid-template-columns: 1fr; }
  .case-light .case-content { order: 2; }
  .case-light .case-image-wrap { order: 1; }
  .section-heading { grid-template-columns: 1fr; gap: 24px; }
}

@media (max-width: 620px) {
  :root { --wrap: calc(100% - 30px); }
  .site-header { height: 72px; padding-inline: 18px; }
  .brand-name { font-size: .94rem; }
  .brand-mark { width: 33px; height: 33px; }
  .hero { min-height: 720px; align-items: flex-end; padding-bottom: 150px; }
  .hero-content { padding-top: 0; transform: translateY(36px); }
  h1 { font-size: clamp(2.9rem, 13.7vw, 4.25rem); }
  html[lang^="zh"] h1 { font-size: clamp(2.7rem, 11vw, 3.4rem); line-height: 1.16; }
  .hero-copy { margin-top: 22px; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 18px; margin-top: 30px; }
  .hero-rail { overflow: hidden; grid-template-columns: repeat(5, 1fr); }
  .hero-rail button { padding-inline: 3px; font-size: .52rem; letter-spacing: .07em; }
  .intro { grid-template-columns: 1fr; gap: 20px; padding-block: 85px; }
  .intro-copy { grid-column: auto; }
  .why-grid { grid-column: auto; grid-template-columns: 1fr; margin-top: 20px; }
  .why-grid article { min-height: 0; padding: 28px 24px; }
  .why-grid article:hover, .why-grid article:focus-within { transform: none; box-shadow: none; }
  .js .why-grid article { cursor: pointer; }
  .js .why-grid article p { max-height: 0; margin-top: 0; overflow: hidden; opacity: 0; transition: max-height .42s ease, opacity .25s ease, margin .35s ease; }
  .js .why-grid article.is-open p { max-height: 220px; margin-top: 18px; opacity: 1; }
  .why-toggle { display: grid; place-items: center; position: absolute; right: 20px; top: 22px; width: 36px; height: 36px; border: 1px solid rgba(23,21,18,.25); border-radius: 50%; background: rgba(255,255,255,.35); color: var(--ink); cursor: pointer; }
  .why-toggle span { font-size: 1.25rem; line-height: 1; transition: transform .3s; }
  .why-grid article.is-open .why-toggle span { transform: rotate(45deg); }
  .why-grid h3 { max-width: calc(100% - 44px); }
  .solutions, .cases, .audience { padding-block: 90px; }
  .process, .contact { padding-block: 90px; }
  .service-item { grid-template-columns: 34px 1fr; gap: 15px; }
  .service-item h3 { font-size: 2.1rem; }
  .js .service-item { position: relative; min-height: 100px; padding-block: 25px; cursor: pointer; }
  .js .service-item p, .js .service-item .service-cn { grid-column: 2; max-height: 0; margin: 0; overflow: hidden; opacity: 0; transition: max-height .42s ease, opacity .28s ease, margin .42s ease; }
  .js .service-item.is-open p { max-height: 180px; margin-top: 8px; opacity: 1; }
  .js .service-item.is-open .service-cn { max-height: 40px; margin-top: 4px; opacity: 1; }
  .service-expand { display: grid; place-items: center; position: absolute; right: 4px; top: 28px; width: 36px; height: 36px; border: 1px solid rgba(255,255,255,.25); border-radius: 50%; background: transparent; color: white; cursor: pointer; }
  .service-expand span { font-size: 1.25rem; line-height: 1; transition: transform .3s; }
  .service-item.is-open .service-expand span { transform: rotate(45deg); }
  .case-card { min-height: 0; }
  .case-image-wrap { min-height: 390px; }
  .case-content { padding: 42px 26px 48px; }
  .footer-main { grid-template-columns: 1fr; gap: 38px; }
  .footer-stages { justify-content: flex-start; flex-wrap: wrap; }
  .footer-meta { grid-column: auto; flex-direction: column; }
  .mobile-cta { position: fixed; z-index: 45; left: 15px; right: 15px; bottom: max(15px, env(safe-area-inset-bottom)); display: flex; align-items: center; justify-content: space-between; padding: 15px 18px; background: var(--copper); color: var(--ink); font-size: .84rem; font-weight: 700; box-shadow: 0 12px 35px rgba(0,0,0,.3); transform: translateY(130%); transition: transform .35s cubic-bezier(.2,.8,.2,1); }
  .mobile-cta.show { transform: translateY(0); }
  .mobile-cta:active, .button:active { transform: scale(.98); }
  .site-footer { padding-bottom: 105px; }
}

@media (prefers-reduced-motion: reduce) {
  .js .reveal { opacity: 1; transform: none; }
  .mobile-cta, .service-item p, .service-item .service-cn { transition: none !important; }
}