/* ══════════════════════════════════════
   HWDDG — Luxury Heritage Style
   Black + Champagne Gold + Generous Space
   ══════════════════════════════════════ */

:root {
  --bg: #0A0A0A;
  --bg2: #111111;
  --surface: #161616;
  --surface2: #1E1E1E;
  --border: #2A2A2A;
  --border-light: #333333;
  --text: #E8E0D5;
  --text2: #9C9488;
  --text3: #5C564E;
  --gold: #C9A96E;
  --gold-light: #D4AF37;
  --gold-dark: #A6844D;
  --gold-bg: rgba(201,169,110,0.08);
  --gold-border: rgba(201,169,110,0.25);
  --green: #7B9B6A;
  --green-bg: rgba(123,155,106,0.1);
  --red: #B85C5C;
  --radius: 4px;
  --radius-lg: 8px;
  --shadow: 0 2px 20px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.6);
  --serif: "Times New Roman", "Source Han Serif SC", "Noto Serif SC", Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --max-width: 1280px;
  --transition: 0.4s cubic-bezier(0.25, 0.1, 0.25, 1);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;background:var(--bg)}
body{font-family:var(--sans);background:var(--bg);color:var(--text);line-height:1.7;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;letter-spacing:0.01em}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}

/* ═══ GOLD DIVIDER ═══ */
.gold-line{width:60px;height:1px;background:var(--gold);margin:0 auto;opacity:0.6}

/* ═══ NAVIGATION ═══ */
.nav{position:fixed;top:0;z-index:100;width:100%;background:rgba(10,10,10,0.95);backdrop-filter:blur(20px);border-bottom:1px solid rgba(201,169,110,0.10);transition:var(--transition)}
.nav-inner{max-width:var(--max-width);margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:18px 40px}
.logo{font-family:var(--serif);font-size:20px;font-weight:700;letter-spacing:4px;color:var(--gold);text-transform:uppercase}
.nav-links{display:flex;gap:32px}
.nav-links a{font-size:13px;color:var(--text2);letter-spacing:1px;text-transform:uppercase;padding:4px 0;border-bottom:1px solid transparent;transition:var(--transition);font-weight:500}
.nav-links a:hover,.nav-links a.active{color:var(--gold);border-bottom-color:var(--gold)}
.nav-toggle{display:none;background:none;border:none;font-size:22px;cursor:pointer;color:var(--text)}

/* ═══ HERO ═══ */
.hero{min-height:90vh;display:flex;align-items:center;justify-content:center;text-align:center;padding:120px 40px 80px;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at 50% 30%, rgba(201,169,110,0.06) 0%, transparent 70%)}
.hero-inner{position:relative;z-index:1;max-width:720px}
.hero-label{font-size:11px;letter-spacing:6px;text-transform:uppercase;color:var(--gold);margin-bottom:32px;font-weight:500}
.hero-title{font-family:var(--serif);font-size:clamp(36px,5.5vw,56px);font-weight:400;line-height:1.15;margin-bottom:28px;letter-spacing:-0.5px;color:#fff}
.gold{color:var(--gold)}
.hero-desc{font-size:17px;color:var(--text2);line-height:1.7;margin-bottom:44px;max-width:520px;margin-left:auto;margin-right:auto;font-weight:300}
.hero-actions{display:flex;gap:20px;justify-content:center;flex-wrap:wrap}

/* ═══ BUTTONS ═══ */
.btn-primary{display:inline-block;background:var(--gold);color:var(--bg);padding:15px 36px;font-size:13px;font-weight:600;letter-spacing:2px;text-transform:uppercase;transition:var(--transition);border:none;cursor:pointer;font-family:var(--sans)}
.btn-primary:hover{background:#D4AF37;transform:translateY(-1px);box-shadow:0 4px 24px rgba(201,169,110,0.3)}
.btn-outline{display:inline-block;border:1px solid var(--gold-border);color:var(--gold);padding:15px 36px;font-size:13px;font-weight:500;letter-spacing:2px;text-transform:uppercase;transition:var(--transition)}
.btn-outline:hover{background:var(--gold-bg);border-color:var(--gold)}

/* ═══ STATS BAR ═══ */
.stats{padding:80px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border);background:var(--bg2)}
.stats .section-inner{display:flex;justify-content:center;gap:80px;flex-wrap:wrap}
.stat-item{text-align:center}
.stat-num{display:block;font-family:var(--serif);font-size:clamp(32px,4.5vw,48px);font-weight:400;color:var(--gold);letter-spacing:-1px}
.stat-label{display:block;font-size:12px;color:var(--text3);margin-top:8px;letter-spacing:2px;text-transform:uppercase}

/* ═══ SECTION HEADERS ═══ */
.section-inner{max-width:var(--max-width);margin:0 auto;padding:0 40px}
.section-label{font-size:11px;letter-spacing:4px;text-transform:uppercase;color:var(--gold);text-align:center;margin-bottom:16px;font-weight:500}
.section-title{font-family:var(--serif);font-size:clamp(28px,3.5vw,38px);font-weight:400;text-align:center;margin-bottom:14px;letter-spacing:-0.3px;color:#fff}
.section-sub{text-align:center;color:var(--text2);font-size:15px;margin-bottom:56px;font-weight:300;max-width:560px;margin-left:auto;margin-right:auto}
.page-header{padding:120px 0 40px;text-align:center}
.page-header h1{font-family:var(--serif);font-size:clamp(30px,4vw,44px);font-weight:400;color:#fff;margin-bottom:10px}
.page-header p{color:var(--text2);font-size:15px;font-weight:300}

/* ═══ INDUSTRIES GRID ═══ */
.industries{padding:100px 0}
.industry-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:12px;padding:0 40px;max-width:var(--max-width);margin:0 auto}
.industry-card{background:var(--surface);border:1px solid var(--border);padding:28px 20px;text-align:center;transition:var(--transition);display:block}
.industry-card:hover{background:var(--bg2);border-color:var(--gold-border);transform:translateY(-2px)}
.ic-icon{font-size:30px;display:block;margin-bottom:12px;opacity:0.8}
.ic-name{font-size:13px;font-weight:500;letter-spacing:1px;display:block;text-transform:uppercase}
.ic-desc{font-size:12px;color:var(--text3);display:block;margin-top:4px}

/* ═══ FEATURES ═══ */
.features{padding:100px 0;background:var(--bg2)}
.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:48px}
.feature-item{padding:0}
.feature-num{font-family:var(--serif);font-size:56px;color:var(--gold);font-weight:400;line-height:1;opacity:0.3}
.feature-item h3{font-size:17px;font-weight:600;margin:16px 0 8px;color:#fff;letter-spacing:0.5px}
.feature-item p{font-size:14px;color:var(--text2);line-height:1.7;font-weight:300}

/* ═══ CTA SECTION ═══ */
.cta-section{padding:120px 0;text-align:center;background:var(--bg2);border-top:1px solid var(--border);position:relative}
.cta-section::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at 50% 50%, rgba(201,169,110,0.06) 0%, transparent 60%)}
.cta-section .section-inner{position:relative;z-index:1}
.cta-section h2{font-family:var(--serif);font-size:clamp(28px,4vw,42px);font-weight:400;margin-bottom:16px;color:#fff;line-height:1.3}
.cta-section p{font-size:15px;color:var(--text2);margin-bottom:36px;font-weight:300}
.cta-section .btn-primary{background:var(--gold);color:var(--bg)}

/* ═══ FOOTER ═══ */
.footer{padding:80px 0 32px;background:var(--bg);border-top:1px solid var(--border)}
.footer-inner{max-width:var(--max-width);margin:0 auto;padding:0 40px;display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:48px;margin-bottom:48px}
.footer-col strong{display:block;font-size:13px;letter-spacing:2px;text-transform:uppercase;color:var(--gold);margin-bottom:16px;font-weight:600}
.footer-col p,.footer-col a,.footer-col span{display:block;font-size:13px;color:var(--text2);line-height:2.2;font-weight:300}
.footer-col a:hover{color:var(--gold)}
.footer-bottom{max-width:var(--max-width);margin:0 auto;padding:24px 40px 0;border-top:1px solid var(--border);text-align:center;font-size:12px;color:var(--text3);letter-spacing:1px}

/* ═══ CASE CARDS ═══ */
.case-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(360px,1fr));gap:20px;margin:40px 0}
.case-card{background:var(--surface);border:1px solid var(--border);overflow:hidden;transition:var(--transition)}
.case-card:hover{border-color:var(--gold-border);transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.case-cover{height:220px;background:linear-gradient(160deg, var(--bg2), var(--surface));display:flex;align-items:center;justify-content:center;font-size:56px;position:relative;border-bottom:1px solid var(--border)}
.case-badge{position:absolute;top:16px;left:16px;background:rgba(0,0,0,0.7);color:var(--gold);padding:5px 14px;font-size:10px;letter-spacing:2px;text-transform:uppercase;font-weight:500}
.case-body{padding:28px}
.case-title{font-family:var(--serif);font-size:18px;font-weight:400;margin-bottom:10px;line-height:1.5;color:#fff}
.case-desc{font-size:13px;color:var(--text2);line-height:1.7;margin-bottom:14px;font-weight:300}
.case-metrics{font-size:11px;color:var(--text3);margin-bottom:10px;letter-spacing:1px}
.case-result{font-size:12px;color:var(--green);background:var(--green-bg);padding:14px 16px;line-height:1.6}
.case-expand{border-top:1px solid var(--border);margin-top:16px;padding-top:14px}
.case-expand-label{font-size:11px;color:var(--gold);letter-spacing:2px;text-transform:uppercase;cursor:pointer;font-weight:500;transition:var(--transition)}
.case-expand-label:hover{color:#fff}
.case-expand-content{max-height:0;overflow:hidden;transition:max-height 0.6s ease}
.case-card.expanded .case-expand-content{max-height:2000px}
.case-card.expanded .case-expand-label::before{content:'▾ '}
.plan-step{display:flex;gap:16px;padding:16px 0;border-bottom:1px solid var(--border);align-items:flex-start}
.plan-step:last-child{border-bottom:none}
.plan-step-num{font-family:var(--serif);font-size:14px;color:var(--gold);font-weight:600;min-width:50px;letter-spacing:1px}
.plan-step-detail{font-size:13px;color:var(--text2);line-height:1.7;font-weight:300}
.plan-type-label{font-size:10px;color:var(--text3);font-weight:300;letter-spacing:2px;text-transform:uppercase;margin-left:8px}

/* ═══ FILTER ═══ */
.filter-bar{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-bottom:40px}
.filter-select{padding:12px 40px 12px 18px;font-size:13px;border:1px solid var(--border);background:var(--surface);cursor:pointer;font-family:var(--sans);color:var(--text);appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%23C9A96E' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;min-width:220px;letter-spacing:1px;text-transform:uppercase}
.filter-select:focus{outline:none;border-color:var(--gold)}
.filter-tag{padding:10px 22px;font-size:12px;border:1px solid var(--border);background:var(--surface);cursor:pointer;transition:var(--transition);font-family:var(--sans);color:var(--text2);letter-spacing:1px;text-transform:uppercase}
.filter-tag:hover,.filter-tag.active{background:var(--gold);color:var(--bg);border-color:var(--gold)}

/* ═══ PRICING ═══ */
.pricing-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1px;margin:40px auto;max-width:var(--max-width);background:var(--border)}
.pkg-card{background:var(--surface);padding:48px 36px;text-align:center;transition:var(--transition);position:relative}
.pkg-card.featured{background:var(--bg2);border-left:1px solid var(--gold-border);border-right:1px solid var(--gold-border)}
.pkg-badge{position:absolute;top:20px;left:50%;transform:translateX(-50%);background:var(--gold);color:var(--bg);padding:4px 20px;font-size:10px;letter-spacing:3px;text-transform:uppercase;font-weight:600}
.pkg-name{font-family:var(--serif);font-size:20px;font-weight:400;margin-bottom:16px;color:#fff}
.pkg-price{font-family:var(--serif);font-size:48px;font-weight:400;color:var(--gold);margin-bottom:6px;letter-spacing:-1px}
.pkg-unit{font-size:14px;color:var(--text3);font-weight:300}
.pkg-desc{font-size:13px;color:var(--text2);line-height:1.7;margin-bottom:28px;font-weight:300}
.pkg-features{list-style:none;text-align:left;font-size:12px;color:var(--text2);margin-bottom:28px}
.pkg-features li{padding:7px 0;border-bottom:1px solid var(--border);font-weight:300}
.pkg-features li:last-child{border:none}
.pkg-features li::before{content:'— ';color:var(--gold);font-weight:400}

/* ═══ BILLING TOGGLE ═══ */
.billing-toggle{display:flex;gap:6px;justify-content:center;margin-bottom:48px;flex-wrap:wrap}
.bill-btn{padding:10px 24px;font-size:12px;border:1px solid var(--border);background:var(--surface);cursor:pointer;font-family:var(--sans);color:var(--text2);transition:var(--transition);letter-spacing:2px;text-transform:uppercase;font-weight:500}
.bill-btn:hover{border-color:var(--gold);color:var(--gold)}
.bill-btn.active{background:var(--gold);color:var(--bg);border-color:var(--gold)}
.bill-tag{font-size:9px;opacity:0.5;font-weight:400;letter-spacing:1px}
.pkg-saving{text-align:center;margin-top:-4px;margin-bottom:10px;font-size:11px;color:var(--green);letter-spacing:1px}
.pkg-original{color:var(--text3);text-decoration:line-through}
.pkg-discount{font-weight:600;color:var(--gold)}
.pkg-partner-badge{display:inline-block;background:var(--gold-bg);color:var(--gold);padding:6px 18px;font-size:10px;letter-spacing:2px;text-transform:uppercase;font-weight:500;margin-top:8px}

/* ═══ DELIVERABLES ═══ */
.deliverable-grid{columns:3 340px;column-gap:16px;margin:40px 0}
.deliverable-item{break-inside:avoid;margin-bottom:16px;overflow:hidden;border:1px solid var(--border);background:var(--surface);cursor:pointer;transition:var(--transition);position:relative}
.deliverable-item:hover{border-color:var(--gold-border);transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.deliverable-item img{width:100%;display:block;filter:brightness(0.4) blur(16px);transition:filter 0.6s}
.deliverable-item:hover img{filter:brightness(0.9) blur(0)}
.deliverable-overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;pointer-events:none;transition:opacity 0.4s}
.deliverable-item:hover .deliverable-overlay{opacity:0}
.deliverable-overlay span{color:var(--gold);font-size:12px;font-weight:500;border:1px solid var(--gold-border);padding:10px 24px;letter-spacing:2px;text-transform:uppercase}
.deliverable-caption{padding:16px;font-size:12px;color:var(--text2);font-weight:500;letter-spacing:1px;text-transform:uppercase;border-top:1px solid var(--border)}

/* ═══ ABOUT ═══ */
.about-content{max-width:780px;margin:0 auto;padding:0 40px 100px}
.about-lead{font-family:var(--serif)!important;font-size:21px!important;color:#fff!important;line-height:1.6!important;margin-bottom:36px!important;font-weight:400!important}
.about-content p{font-size:15px;color:var(--text2);line-height:1.8;margin-bottom:22px;font-weight:300}
.about-content h3{font-family:var(--serif);font-size:22px;color:var(--gold);margin:52px 0 18px;font-weight:400;letter-spacing:1px}
.about-content strong{color:var(--text);font-weight:600}

/* ═══ CONTACT ═══ */
.contact-layout{display:grid;grid-template-columns:1fr 1fr;gap:1px;margin:40px auto;max-width:var(--max-width);background:var(--border)}
.contact-form{background:var(--surface);padding:48px}
.contact-form label{display:block;font-size:11px;font-weight:500;margin-bottom:8px;color:var(--text2);letter-spacing:2px;text-transform:uppercase}
.contact-form input,.contact-form textarea,.contact-form select{width:100%;padding:14px 16px;border:1px solid var(--border);font-size:14px;font-family:var(--sans);margin-bottom:24px;background:var(--bg);color:var(--text);transition:border-color var(--transition)}
.contact-form input:focus,.contact-form textarea:focus{outline:none;border-color:var(--gold);background:#111}
.contact-form textarea{min-height:140px;resize:vertical}
.contact-info{padding:48px;background:var(--bg2)}
.contact-info h3{font-family:var(--serif);font-size:22px;color:var(--gold);font-weight:400;margin-bottom:20px}
.contact-info p{color:var(--text2);font-size:14px;line-height:1.8;margin-bottom:14px;font-weight:300}
.contact-info strong{color:var(--text)}

/* ═══ FAQ ═══ */
.faq-list{max-width:780px;margin:40px auto}
.faq-item{border-bottom:1px solid var(--border);padding:24px 0}
.faq-q{font-size:16px;font-weight:500;cursor:pointer;display:flex;justify-content:space-between;align-items:center;padding:8px 0;color:var(--text);transition:var(--transition)}
.faq-q:hover{color:var(--gold)}
.faq-q::after{content:'+';font-size:20px;color:var(--gold);transition:transform 0.3s;font-weight:300}
.faq-q.open::after{transform:rotate(45deg)}
.faq-a{font-size:14px;color:var(--text2);line-height:1.8;padding-top:12px;display:none;font-weight:300}
.faq-a.open{display:block}

/* ═══ LIGHTBOX ═══ */
.lightbox{display:none;position:fixed;inset:0;background:rgba(0,0,0,0.95);z-index:200;align-items:center;justify-content:center;cursor:pointer}
.lightbox.show{display:flex}
.lightbox img{max-width:94vw;max-height:94vh}

/* ═══ TOAST ═══ */
.toast{position:fixed;bottom:40px;right:40px;background:var(--surface);color:var(--text);padding:14px 28px;border:1px solid var(--border);font-size:13px;opacity:0;transform:translateY(12px);transition:var(--transition);z-index:300;font-family:var(--sans);letter-spacing:1px}
.toast.show{opacity:1;transform:translateY(0)}

/* ═══ RESPONSIVE ═══ */
@media(max-width:768px){
  .nav-links{display:none;position:absolute;top:100%;left:0;right:0;background:var(--bg);flex-direction:column;padding:20px 40px;border-bottom:1px solid var(--border)}
  .nav-links.open{display:flex}
  .nav-toggle{display:block}
  .stats .section-inner{gap:40px}
  .contact-layout{grid-template-columns:1fr}
  .hero{min-height:auto;padding:100px 24px 60px}
  .case-grid{grid-template-columns:1fr}
  .deliverable-grid{columns:1}
  .section-inner,.nav-inner{padding-left:24px;padding-right:24px}
  .pricing-grid{grid-template-columns:1fr}
  .pkg-card.featured{border-left:none;border-right:none}
  .industry-grid{grid-template-columns:repeat(3,1fr)}
}