:root {
  --red-950: #15151a;
  --red-900: #222229;
  --red-800: #a8232d;
  --red-700: #c22e38;
  --gold: #caa96a;
  --gold-light: #ead39c;
  --cream: #f5f4f1;
  --ink: #202027;
  --muted: #686870;
  --white: #fff;
  --shadow: 0 18px 50px rgba(74, 8, 12, .12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); font-family: "Noto Sans SC", "Microsoft YaHei", sans-serif; background: #fff; display: flex; flex-direction: column; min-height: 100vh; }
main { flex: 1 0 auto; }
.site-footer { margin-top: auto; }
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }
.container { width: min(1180px, calc(100% - 48px)); margin-inline: auto; }
.site-header { position: fixed; inset: 0 0 auto; z-index: 50; height: 82px; color: #fff; transition: .3s; }
.site-header.scrolled { height: 70px; background: rgba(20, 20, 25, .96); box-shadow: 0 8px 28px rgba(0, 0, 0, .22); backdrop-filter: blur(12px); }
.header-inner { height: 100%; display: flex; align-items: center; gap: 40px; }
.brand { display: flex; align-items: center; gap: 11px; flex-shrink: 0; }
.brand-logo { width: 48px; height: 48px; object-fit: contain; border-radius: 0; background: transparent; padding: 0; display: block; flex-shrink: 0; }
.brand-mark { width: 42px; height: 42px; display: grid; place-items: center; border: 1px solid var(--gold); color: var(--gold-light); font-family: serif; font-size: 25px; transform: rotate(45deg); }
.brand-mark::first-letter { transform: rotate(-45deg); }
.brand-text { display: grid; line-height: 1.05; }
.brand-text strong { font-size: 20px; letter-spacing: 3px; }
.brand-text small { margin-top: 5px; color: var(--gold-light); font-size: 8px; letter-spacing: 2.5px; }
.main-nav { margin-left: auto; display: flex; align-items: center; gap: 30px; font-size: 14px; }
.main-nav a { position: relative; padding: 29px 0; opacity: .83; }
.main-nav a::after { content: ""; position: absolute; inset: auto 50% 18px; width: 0; height: 2px; background: var(--gold); transition: .25s; }
.main-nav a:hover, .main-nav a.active { opacity: 1; }
.main-nav a:hover::after, .main-nav a.active::after { width: 18px; transform: translateX(-50%); }
.header-cta { padding: 11px 18px; border: 1px solid rgba(234, 201, 123, .65); color: var(--gold-light); font-size: 13px; }
.header-cta span, .btn span, .text-link span { margin-left: 9px; }
.menu-toggle { display: none; background: none; border: 0; }

.hero { min-height: 770px; position: relative; overflow: hidden; color: #fff; background: linear-gradient(118deg, #121218 0%, #282830 58%, #17171d 100%); }
.hero::after { content: ""; position: absolute; inset: 0; opacity: .25; background-image: linear-gradient(120deg, transparent 47%, rgba(255,255,255,.12) 48%, transparent 49%); background-size: 180px 180px; }
.hero-pattern { position: absolute; right: -7%; top: -20%; width: 690px; height: 690px; border: 1px solid rgba(238, 205, 122, .2); border-radius: 50%; box-shadow: 0 0 0 85px rgba(238,205,122,.025), 0 0 0 170px rgba(238,205,122,.025); }
.hero-pattern::after { content: "水"; position: absolute; inset: 0; display: grid; place-items: center; color: rgba(255, 255, 255, .035); font-size: 430px; font-family: serif; }
.hero-glow { position: absolute; width: 600px; height: 600px; right: 10%; top: 10%; background: radial-gradient(circle, rgba(194,46,56,.24), transparent 66%); }
.hero-content { min-height: 650px; position: relative; z-index: 2; display: flex; align-items: center; justify-content: flex-start; padding-top: 70px; }
.hero-copy { width: min(920px, 100%); }
.eyebrow, .section-kicker { color: var(--gold-light); font-size: 12px; font-weight: 600; letter-spacing: 4px; }
.eyebrow { display: flex; align-items: center; gap: 12px; }
.eyebrow span { width: 35px; height: 1px; background: var(--gold); }
h1, h2, h3, p { margin-top: 0; }
h1 { margin: 20px 0 22px; font-size: clamp(48px, 6vw, 82px); line-height: 1.15; letter-spacing: 6px; font-weight: 900; }
h1 em, h2 em { color: var(--gold-light); font-style: normal; }
.hero-description { max-width: 850px; color: rgba(255,255,255,.77); font-size: 17px; line-height: 2; letter-spacing: 1px; }
.hero-actions { display: flex; gap: 15px; margin-top: 38px; }
.btn { min-height: 50px; padding: 0 25px; display: inline-flex; align-items: center; justify-content: center; border: 1px solid transparent; cursor: pointer; transition: .25s; }
.btn-gold { color: #551108; background: linear-gradient(135deg, #f0d486, #c99a3d); font-weight: 600; box-shadow: 0 9px 24px rgba(50,0,0,.16); }
.btn-gold:hover { transform: translateY(-2px); filter: brightness(1.07); }
.btn-outline { border-color: rgba(255,255,255,.45); color: #fff; }
.btn-outline:hover { border-color: var(--gold); color: var(--gold-light); }
.hero-seal { width: 265px; height: 265px; display: grid; place-items: center; border: 1px solid rgba(235,201,123,.25); border-radius: 50%; }
.seal-ring { width: 205px; height: 205px; position: relative; display: flex; flex-direction: column; align-items: center; justify-content: center; border: 1px solid var(--gold); border-radius: 50%; color: var(--gold-light); }
.seal-ring::before, .seal-ring::after { content: "◆"; position: absolute; top: 50%; color: var(--gold); font-size: 8px; }
.seal-ring::before { left: -4px; }.seal-ring::after { right: -4px; }
.seal-ring span { font-size: 14px; letter-spacing: 5px; }.seal-ring strong { margin: 10px 0; font: 700 43px/1 sans-serif; letter-spacing: 5px; }.seal-ring small { letter-spacing: 5px; }
.hero-logo { width: 150px; height: 150px; display: block; object-fit: contain; }
.hero-stats { position: absolute; z-index: 3; inset: auto 0 0; border-top: 1px solid rgba(255,255,255,.12); background: rgba(0,0,0,.2); backdrop-filter: blur(8px); }
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat-grid div { min-height: 120px; display: flex; align-items: center; justify-content: center; gap: 13px; border-right: 1px solid rgba(255,255,255,.13); }
.stat-grid div:first-child { border-left: 1px solid rgba(255,255,255,.13); }
.stat-grid strong { color: var(--gold-light); font: 600 40px serif; }
.stat-grid strong::after { content: ""; }
.stat-grid span { max-width: 60px; color: rgba(255,255,255,.72); font-size: 13px; line-height: 1.6; }

.section { padding: 110px 0; }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 90px; align-items: center; }
.about-visual { min-height: 520px; position: relative; }
.visual-main { position: absolute; inset: 0 40px 40px 0; overflow: hidden; background: linear-gradient(145deg, #15151b, #393941); box-shadow: var(--shadow); }
.visual-main::after { content: ""; position: absolute; inset: 0; background: radial-gradient(circle at 72% 30%, rgba(194,46,56,.44), transparent 28%), linear-gradient(135deg, transparent 48%, rgba(255,255,255,.035) 49%, transparent 50%); background-size: auto, 65px 65px; }
.camera-body { position: absolute; z-index: 2; left: 14%; top: 27%; width: 58%; height: 44%; border: 2px solid rgba(234,211,156,.85); border-radius: 20px; background: rgba(10,10,14,.48); box-shadow: 0 25px 80px rgba(0,0,0,.35); }
.camera-body::before { content: ""; position: absolute; left: 10%; top: -24px; width: 36%; height: 23px; border: 2px solid rgba(234,211,156,.75); border-bottom: 0; border-radius: 8px 8px 0 0; }
.camera-body::after { content: ""; position: absolute; right: -25%; top: 22%; width: 25%; height: 54%; background: rgba(194,46,56,.8); clip-path: polygon(0 20%, 100% 0, 100% 100%, 0 80%); }
.camera-lens { position: absolute; left: 50%; top: 50%; width: 120px; height: 120px; border: 2px solid var(--gold); border-radius: 50%; transform: translate(-50%, -50%); box-shadow: inset 0 0 0 20px rgba(255,255,255,.04), inset 0 0 0 38px rgba(194,46,56,.25); }
.record-dot { position: absolute; right: 8%; top: 12%; width: 12px; height: 12px; border-radius: 50%; background: #e23b45; box-shadow: 0 0 15px #e23b45; }
.play-mark { position: absolute; z-index: 3; right: 12%; bottom: 11%; color: rgba(234,211,156,.58); font-size: 70px; }
.signal-line { position: absolute; z-index: 1; border: 1px solid rgba(234,211,156,.22); border-radius: 50%; }
.signal-one { width: 260px; height: 260px; right: -70px; top: -55px; }
.signal-two { width: 370px; height: 370px; right: -125px; top: -110px; }
.experience-card { position: absolute; z-index: 3; right: 0; bottom: 0; width: 200px; height: 130px; display: flex; flex-direction: column; justify-content: center; align-items: center; color: #fff; background: #a8232d; border: 1px solid var(--gold); }
.experience-card strong { color: var(--gold-light); font: 600 19px sans-serif; letter-spacing: 3px; }.experience-card span { margin-top: 10px; font-size: 11px; letter-spacing: 3px; }
.section-copy .section-kicker, .section-heading .section-kicker { color: var(--red-700); }
h2 { margin: 12px 0 30px; font-size: clamp(34px, 4vw, 50px); line-height: 1.35; letter-spacing: 3px; }
h2 em { color: var(--red-700); }
.section-copy > p:not(.section-kicker) { color: var(--muted); line-height: 2; font-size: 15px; }
.value-row { display: grid; grid-template-columns: 1fr 1fr; margin: 31px 0; border-block: 1px solid #eadfd4; }
.value-row div { padding: 20px 0; display: grid; gap: 7px; }
.value-row div + div { padding-left: 24px; border-left: 1px solid #eadfd4; }
.value-row span { color: var(--red-700); font-size: 12px; letter-spacing: 4px; }.value-row strong { font-size: 17px; }
.text-link { color: var(--red-700); font-size: 14px; font-weight: 600; }
.text-link span { color: var(--gold); }

.business { background: var(--cream); }
.section-heading { margin-bottom: 45px; display: flex; align-items: end; justify-content: space-between; }
.section-heading h2 { margin-bottom: 0; }
.section-heading > p { color: var(--muted); text-align: right; line-height: 1.9; font-size: 14px; }
.section-actions { display: grid; gap: 12px; justify-items: end; }
.section-actions p { margin: 0; color: var(--muted); text-align: right; line-height: 1.9; font-size: 14px; }
.section-heading.light .section-actions p { color: rgba(255,255,255,.62); }
.business-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.business-card { min-height: 360px; position: relative; padding: 36px 29px; overflow: hidden; background: #fff; border-bottom: 3px solid transparent; box-shadow: 0 9px 35px rgba(80,34,25,.06); transition: .35s; }
.business-card:hover { transform: translateY(-8px); border-color: var(--gold); box-shadow: var(--shadow); }
.business-card.featured { color: #fff; background: linear-gradient(145deg, #202027, #393941); }
.card-number { position: absolute; top: 25px; right: 25px; color: #cdbfaf; font: 20px serif; }
.featured .card-number { color: rgba(255,255,255,.45); }
.card-icon { width: 60px; height: 60px; display: grid; place-items: center; margin: 40px 0 28px; color: var(--red-700); border: 1px solid #dbc7aa; font: 30px serif; transform: rotate(45deg); }
.featured .card-icon { color: var(--gold-light); border-color: var(--gold); }
.business-card h3 { font-size: 22px; letter-spacing: 2px; }
.business-card p { min-height: 90px; color: var(--muted); font-size: 14px; line-height: 1.9; }
.featured p { color: rgba(255,255,255,.7); }
.business-card a { color: var(--red-700); font-size: 13px; font-weight: 600; }
.featured a { color: var(--gold-light); }

.workflow { background: #fff; }
.workflow-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.workflow-card { padding: 30px 24px; border: 1px solid #e8e1d5; background: linear-gradient(180deg, #fff, #f8f5ee); box-shadow: 0 12px 35px rgba(32,32,39,.06); }
.workflow-card span { color: var(--red-700); font: 700 34px serif; }
.workflow-card h3 { margin: 18px 0 12px; font-size: 20px; }
.workflow-card p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.8; }

.cases { color: #fff; background: linear-gradient(120deg, #15151a, #24242b); }
.section-heading.light h2 em { color: var(--gold-light); }
.section-heading.light > p { color: rgba(255,255,255,.62); }
.portfolio-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.portfolio-card { overflow: hidden; color: var(--ink); background: #fff; transition: .3s; }
.portfolio-card:hover { transform: translateY(-7px); box-shadow: 0 22px 45px rgba(0,0,0,.28); }
.portfolio-cover { position: relative; height: 235px; display: grid; place-items: center; overflow: hidden; background: linear-gradient(135deg, #34343d, #a8232d); }
.portfolio-cover::after { content: ""; position: absolute; inset: 0; background: linear-gradient(135deg, transparent, rgba(0,0,0,.38)); }
.portfolio-cover b { position: absolute; z-index: 2; right: 20px; bottom: 12px; color: rgba(255,255,255,.22); font: 700 64px serif; }
.cover-title { position: absolute; left: 18px; top: 18px; z-index: 2; color: rgba(255,255,255,.86); font-size: 13px; letter-spacing: 2px; }
.cover-two { background: linear-gradient(135deg, #c69f5a, #4b3430); }
.cover-three { background: linear-gradient(135deg, #405268, #171a20); }
.cover-four { background: linear-gradient(135deg, #84343a, #d99e62); }
.cover-five { background: linear-gradient(135deg, #26262e, #716043); }
.cover-six { background: linear-gradient(135deg, #4d2d55, #b33b45); }
.play-button { position: relative; z-index: 3; width: 64px; height: 64px; display: grid; place-items: center; padding-left: 4px; color: #fff; border: 1px solid rgba(255,255,255,.75); border-radius: 50%; background: rgba(0,0,0,.22); backdrop-filter: blur(7px); transition: .25s; }
.portfolio-card:hover .play-button { color: #1b1713; background: var(--gold-light); border-color: var(--gold-light); transform: scale(1.08); }
.portfolio-info { padding: 25px 25px 28px; }
.portfolio-info small { color: var(--red-700); letter-spacing: 1px; }
.portfolio-info h3 { margin: 10px 0; font-size: 19px; }
.portfolio-info p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.8; }

.results { background: #fff; }
.result-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.data-card { overflow: hidden; border: 1px solid #e7e3dc; background: var(--cream); box-shadow: 0 15px 40px rgba(32,32,39,.07); }
.data-shot { min-height: 275px; padding: 25px; position: relative; display: flex; flex-direction: column; justify-content: space-between; color: rgba(255,255,255,.7); background: linear-gradient(140deg, #202027, #363640); }
.data-shot-alt { background: linear-gradient(140deg, #29272c, #734047); }
.data-shot > span { font-size: 12px; letter-spacing: 2px; }
.chart-bars { height: 170px; display: flex; align-items: end; gap: 12px; padding: 0 15px; border-bottom: 1px solid rgba(255,255,255,.18); }
.chart-bars i { flex: 1; height: 35%; background: linear-gradient(#e5c783, #a8232d); border-radius: 4px 4px 0 0; }
.chart-bars i:nth-child(2) { height: 52%; }.chart-bars i:nth-child(3) { height: 43%; }.chart-bars i:nth-child(4) { height: 76%; }.chart-bars i:nth-child(5) { height: 65%; }.chart-bars i:nth-child(6) { height: 92%; }
.line-chart { height: 170px; position: relative; overflow: hidden; border: 1px solid rgba(255,255,255,.12); background: repeating-linear-gradient(0deg, transparent 0 33px, rgba(255,255,255,.08) 34px); }
.line-chart::before { content: ""; position: absolute; inset: 40px 10px 25px; background: linear-gradient(155deg, transparent 0 15%, #e5c783 16% 17%, transparent 18% 28%, #e5c783 29% 30%, transparent 31% 44%, #e5c783 45% 46%, transparent 47% 60%, #e5c783 61% 62%, transparent 63% 76%, #e5c783 77% 78%, transparent 79%); }
.data-copy { padding: 28px; }
.data-copy small { color: var(--red-700); }
.data-copy h3 { margin: 10px 0 22px; font-size: 21px; }
.metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.metrics span { color: var(--muted); font-size: 11px; }
.metrics b { display: block; margin-bottom: 4px; color: var(--ink); font-size: 20px; }
.data-note { margin: 22px 0 0; color: #938a82; font-size: 12px; text-align: center; }

.deliverables { background: var(--cream); }
.deliver-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 60px; align-items: center; }
.deliver-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.deliver-list div { padding: 24px; background: #fff; border-left: 4px solid var(--red-700); box-shadow: 0 12px 35px rgba(32,32,39,.07); }
.deliver-list strong { display: block; margin-bottom: 9px; font-size: 19px; }
.deliver-list span { color: var(--muted); font-size: 13px; line-height: 1.7; }

.video-modal { position: fixed; inset: 0; z-index: 100; display: none; place-items: center; padding: 24px; background: rgba(0,0,0,.74); }
.video-modal.open { display: grid; }
.video-modal-panel { width: min(980px, 100%); position: relative; }
.video-close { position: absolute; right: 0; top: -48px; min-height: 36px; padding: 0 16px; color: #fff; border: 1px solid rgba(255,255,255,.25); background: rgba(255,255,255,.08); cursor: pointer; }
.video-frame { aspect-ratio: 16 / 9; display: grid; place-items: center; background: #000; box-shadow: 0 25px 80px rgba(0,0,0,.45); }
.video-frame video, .video-frame iframe { width: 100%; height: 100%; border: 0; }

.contact { padding: 90px 0; color: #fff; background: linear-gradient(110deg, #202027, #34343d); border-top: 3px solid #a8232d; }
.contact-inner { display: grid; grid-template-columns: .85fr 1.15fr; gap: 80px; align-items: center; }
.contact h2 { margin-bottom: 18px; }.contact h2 em { color: var(--gold-light); }
.contact > .container > div > p:last-child { color: rgba(255,255,255,.67); line-height: 1.9; }
.contact-form { padding: 34px; display: grid; grid-template-columns: 1fr 1fr; gap: 18px; background: rgba(0,0,0,.18); border: 1px solid rgba(238,205,124,.22); }
.hp-field { position: absolute !important; left: -10000px !important; width: 1px !important; height: 1px !important; overflow: hidden !important; }
.contact-form label { display: grid; gap: 8px; color: var(--gold-light); font-size: 12px; }
.contact-form .wide { grid-column: 1 / -1; }
.contact-form input, .contact-form textarea { width: 100%; padding: 13px 14px; color: #fff; background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.2); outline: none; resize: vertical; }
.contact-form input::placeholder, .contact-form textarea::placeholder { color: rgba(255,255,255,.4); }
.contact-form input:focus, .contact-form textarea:focus { border-color: var(--gold); }
.contact-form .btn { width: 100%; border: 0; }
.form-status { margin: 0; min-height: 20px; text-align: center; color: var(--gold-light); font-size: 13px; }

.site-footer { padding-top: 62px; color: rgba(255,255,255,.65); background: #111116; }
.footer-main { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 50px; padding-bottom: 45px; }
.footer-brand p { margin-top: 25px; font-size: 13px; }
.footer-main h4 { color: #fff; margin: 0 0 20px; }
.footer-main > div:not(:first-child) a, .footer-contact span { display: block; margin: 12px 0; font-size: 13px; }
.footer-contact p { color: var(--gold-light); font: 26px serif; }
.footer-bottom { padding: 20px 0; display: flex; justify-content: space-between; border-top: 1px solid rgba(255,255,255,.1); font-size: 11px; }

.reveal { opacity: 0; transform: translateY(25px); transition: opacity .7s, transform .7s; }
.reveal.visible { opacity: 1; transform: translateY(0); }

@media (max-width: 980px) {
  .main-nav, .header-cta { display: none; }
  .main-nav.open { position: absolute; inset: 70px 0 auto; display: grid; gap: 0; padding: 12px 24px 22px; background: rgba(20,20,25,.98); }
  .main-nav.open a { padding: 13px 0; border-bottom: 1px solid rgba(255,255,255,.1); }
  .menu-toggle { width: 40px; height: 40px; margin-left: auto; display: grid; align-content: center; gap: 6px; cursor: pointer; }
  .menu-toggle span { width: 24px; height: 2px; background: #fff; }
  .hero-seal { display: none; }
  .about-grid, .contact-inner { grid-template-columns: 1fr; gap: 55px; }
  .business-grid { grid-template-columns: repeat(2, 1fr); }
  .workflow-grid, .deliver-list { grid-template-columns: repeat(2, 1fr); }
  .deliver-grid { grid-template-columns: 1fr; }
  .portfolio-grid { grid-template-columns: repeat(2, 1fr); }
  .result-grid { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 2fr 1fr 1fr; }
  .footer-contact { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
  .container { width: min(100% - 30px, 1180px); }
  .site-header { height: 70px; }
  .hero { min-height: 800px; }
  .hero-content { min-height: 610px; align-items: center; padding-top: 50px; }
  h1 { font-size: 45px; letter-spacing: 3px; }
  .hero-description br { display: none; }
  .hero-actions { align-items: stretch; flex-direction: column; width: 220px; }
  .stat-grid { grid-template-columns: 1fr 1fr; }
  .stat-grid div { min-height: 95px; border-top: 1px solid rgba(255,255,255,.1); }
  .stat-grid strong { font-size: 31px; }
  .section { padding: 75px 0; }
  .about-visual { min-height: 380px; }
  .visual-main { right: 18px; bottom: 25px; }
  .experience-card { width: 145px; height: 105px; }
  .section-heading { align-items: start; flex-direction: column; gap: 15px; }
  .section-heading > p { text-align: left; }
  .section-actions { justify-items: start; }
  .section-actions p { text-align: left; }
  .business-grid { grid-template-columns: 1fr; }
  .workflow-grid, .deliver-list { grid-template-columns: 1fr; }
  .business-card { min-height: 320px; }
  .portfolio-grid { grid-template-columns: 1fr; }
  .portfolio-cover { height: 220px; }
  .metrics { gap: 5px; }
  .metrics b { font-size: 17px; }
  .contact-inner { gap: 35px; }
  .contact-form { grid-template-columns: 1fr; padding: 24px 18px; }
  .contact-form label { grid-column: 1 / -1; }
  .footer-main { grid-template-columns: 1fr 1fr; }
  .footer-brand, .footer-contact { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; gap: 8px; }
}