/* ===== RESET & VARIABLES ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;scroll-padding-top:100px}

:root{
  --navy:#0A1929;
  --navy-light:#1a2f4a;
  --orange:#FF6B35;
  --orange-dark:#e55a2b;
  --blue:#00D9FF;
  --gray:#E8E9EB;
  --gray-dark:#6B7280;
  --white:#FFFFFF;
  --bg:#F5F7FA;
  --text:#1F2937;
  --text-light:#6B7280;
  --shadow:0 4px 20px rgba(10,25,41,0.1);
  --shadow-lg:0 12px 40px rgba(10,25,41,0.15);
  --radius:12px;
  --radius-lg:20px;
  --transition:all 0.3s cubic-bezier(0.4,0,0.2,1);
  --font-mono:'JetBrains Mono',monospace;
  --font-sans:'Space Grotesk',-apple-system,sans-serif;
}

body{
  font-family:var(--font-sans);
  background:var(--bg);
  color:var(--text);
  line-height:1.6;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}

img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:var(--transition)}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
ul,ol{list-style:none}
h1,h2,h3,h4{font-family:var(--font-sans);color:var(--navy);line-height:1.2;font-weight:700;letter-spacing:-0.02em}
h1{font-size:clamp(2.2rem,5vw,3.8rem)}
h2{font-size:clamp(1.8rem,4vw,2.8rem)}
h3{font-size:clamp(1.3rem,2.5vw,1.6rem)}
h4{font-size:1.1rem}
p{color:var(--text-light);margin-bottom:1rem}

.container{width:min(1280px,92%);margin:0 auto}
section{padding:100px 0;position:relative}

/* ===== TECHNICAL GRID BACKGROUND ===== */
.tech-grid{
  position:fixed;inset:0;z-index:-2;pointer-events:none;
  background-image:
    linear-gradient(rgba(10,25,41,0.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(10,25,41,0.03) 1px,transparent 1px);
  background-size:50px 50px;
}

.measurement-lines{position:fixed;inset:0;z-index:-1;pointer-events:none}
.h-line,.v-line{position:absolute;background:var(--orange);opacity:0.1}
.h-line{left:0;right:0;height:1px}
.v-line{top:0;bottom:0;width:1px}
.line-1{top:20%}
.line-2{top:60%}
.line-3{left:15%}
.line-4{left:85%}

/* ===== NAVIGATION ===== */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  padding:18px 0;
  background:rgba(10,25,41,0.95);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  border-bottom:2px solid var(--orange);
  transition:var(--transition);
}
.nav.scrolled{padding:12px 0;box-shadow:var(--shadow-lg)}
.nav-container{
  width:min(1280px,92%);margin:0 auto;
  display:flex;align-items:center;justify-content:space-between;gap:30px;
}
.logo{display:flex;align-items:center;gap:14px;color:var(--white)}
.logo-mark{
  position:relative;
  width:48px;height:48px;border-radius:8px;
  background:var(--orange);
  display:grid;place-items:center;color:var(--white);font-size:1.3rem;
}
.logo-badge{
  position:absolute;bottom:-6px;right:-6px;
  padding:2px 6px;border-radius:4px;
  background:var(--blue);color:var(--navy);
  font-size:0.6rem;font-weight:700;
  font-family:var(--font-mono);
}
.logo-text{display:flex;flex-direction:column;line-height:1.2}
.logo-sub{font-size:0.7rem;color:var(--gray);font-family:var(--font-mono);letter-spacing:0.1em}
.logo-text strong{font-size:1.1rem;color:var(--white)}
.nav-links{display:flex;gap:6px}
.nav-links a{
  padding:10px 16px;border-radius:8px;
  font-size:0.9rem;font-weight:500;color:var(--gray);
  font-family:var(--font-mono);
  transition:var(--transition);
}
.nav-links a:hover{color:var(--white);background:rgba(255,107,53,0.1)}
.nav-cta{
  display:inline-flex;align-items:center;gap:10px;
  padding:12px 24px;border-radius:8px;
  background:var(--orange);color:var(--white);
  font-weight:600;font-size:0.9rem;
  transition:var(--transition);
}
.nav-cta:hover{background:var(--orange-dark);transform:translateY(-2px)}
.cta-code{font-family:var(--font-mono);font-weight:700}
.nav-toggle{display:none;width:44px;height:44px;border-radius:8px;background:rgba(255,255,255,0.1);position:relative}
.toggle-line{position:absolute;left:12px;right:12px;height:2px;background:var(--white);border-radius:2px;transition:var(--transition)}
.toggle-line:nth-child(1){top:16px}
.toggle-line:nth-child(2){top:21px}
.toggle-line:nth-child(3){top:26px}
.nav-toggle.active .toggle-line:nth-child(1){top:21px;transform:rotate(45deg)}
.nav-toggle.active .toggle-line:nth-child(2){opacity:0}
.nav-toggle.active .toggle-line:nth-child(3){top:21px;transform:rotate(-45deg)}

/* ===== BUTTONS ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:14px 28px;border-radius:8px;
  font-weight:600;font-size:0.95rem;font-family:var(--font-sans);
  transition:var(--transition);
  border:none;cursor:pointer;white-space:nowrap;
}
.btn-primary{background:var(--orange);color:var(--white);box-shadow:0 6px 20px rgba(255,107,53,0.3)}
.btn-primary:hover{background:var(--orange-dark);transform:translateY(-2px);box-shadow:0 10px 28px rgba(255,107,53,0.4)}
.btn-outline{background:transparent;border:2px solid var(--navy);color:var(--navy)}
.btn-outline:hover{background:var(--navy);color:var(--white);transform:translateY(-2px)}
.btn-lg{padding:18px 36px;font-size:1.05rem}
.btn-sm{padding:10px 20px;font-size:0.85rem}
.btn-full{width:100%}

/* ===== HERO ===== */
.hero{
  min-height:100vh;padding:140px 0 60px;
  background:var(--navy);
  position:relative;overflow:hidden;
}
.hero-blueprint{
  width:min(1280px,92%);margin:0 auto;
  display:grid;grid-template-columns:1.2fr 1fr;gap:80px;align-items:center;
  position:relative;z-index:1;
}
.blueprint-overlay{
  position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(0,217,255,0.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(0,217,255,0.05) 1px,transparent 1px);
  background-size:30px 30px;
  pointer-events:none;
}

.hero-spec{
  display:inline-flex;flex-direction:column;gap:4px;
  padding:12px 20px;border-radius:8px;
  background:rgba(255,107,53,0.1);border:1px solid var(--orange);
  margin-bottom:28px;
}
.spec-label{font-size:0.7rem;color:var(--orange);font-family:var(--font-mono);letter-spacing:0.1em;font-weight:700}
.spec-value{font-size:0.9rem;color:var(--white);font-family:var(--font-mono);font-weight:600}

.hero-title{margin-bottom:28px;color:var(--white)}
.title-measure{display:block;font-size:0.6em;color:var(--gray);font-weight:500;margin-bottom:8px}
.title-accent{display:block;color:var(--orange);font-size:1.1em}
.hero-description{font-size:1.15rem;line-height:1.8;color:var(--gray);margin-bottom:40px;max-width:600px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}

.hero-technical{display:flex;flex-direction:column;gap:24px}
.tech-widget{
  padding:24px;border-radius:var(--radius);
  background:rgba(255,255,255,0.05);backdrop-filter:blur(10px);
  border:1px solid rgba(255,255,255,0.1);
  transition:var(--transition);
}
.tech-widget:hover{border-color:var(--orange);transform:translateY(-4px)}
.widget-header{
  display:flex;align-items:center;gap:10px;
  padding-bottom:16px;border-bottom:1px solid rgba(255,255,255,0.1);
  margin-bottom:16px;
}
.widget-header i{color:var(--orange);font-size:1.1rem}
.widget-header span{font-size:0.75rem;color:var(--gray);font-family:var(--font-mono);letter-spacing:0.1em;font-weight:700}
.widget-content{display:flex;flex-direction:column;gap:12px}
.data-row{display:flex;justify-content:space-between;align-items:center;padding:8px 0}
.data-label{font-size:0.85rem;color:var(--gray)}
.data-value{font-family:var(--font-mono);font-weight:700;color:var(--blue);font-size:1rem}

.spec-item{
  display:grid;grid-template-columns:80px 1fr auto;gap:12px;
  padding:10px 0;align-items:center;
}
.spec-code{font-family:var(--font-mono);font-size:0.75rem;color:var(--orange);font-weight:700}
.spec-name{font-size:0.88rem;color:var(--white)}
.spec-rating{font-family:var(--font-mono);font-size:0.8rem;color:var(--blue);font-weight:600}

.hero-stats{
  display:grid;grid-template-columns:repeat(3,1fr);gap:16px;
  padding:24px;border-radius:var(--radius);
  background:rgba(0,217,255,0.05);border:1px solid rgba(0,217,255,0.2);
}
.stat-block{text-align:center}
.stat-number{font-family:var(--font-mono);font-size:2.4rem;font-weight:700;color:var(--white);line-height:1}
.stat-percent,.stat-plus{font-size:1.2rem;color:var(--orange)}
.stat-unit{font-size:0.7rem;color:var(--orange);font-family:var(--font-mono);letter-spacing:0.1em;margin-top:4px}
.stat-label{font-size:0.75rem;color:var(--gray);margin-top:6px}

/* ===== SECTION HEADERS ===== */
.section-header{text-align:center;max-width:700px;margin:0 auto 70px}
.header-code{
  display:inline-block;padding:6px 16px;border-radius:6px;
  background:var(--navy);color:var(--orange);
  font-size:0.75rem;font-weight:700;letter-spacing:0.1em;
  font-family:var(--font-mono);margin-bottom:16px;
}
.section-header h2{margin-bottom:16px}
.section-header p{font-size:1.1rem}

/* ===== SERVICES ===== */
.services{background:var(--white)}
.services-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:28px;
  grid-auto-rows:minmax(320px,auto);
}
.service-spec{
  padding:32px;border-radius:var(--radius-lg);
  background:var(--bg);border:2px solid var(--gray);
  transition:var(--transition);
  display:flex;flex-direction:column;
  position:relative;overflow:hidden;
}
.service-spec:hover{border-color:var(--orange);transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.spec-primary{grid-column:span 2;grid-row:span 2}
.spec-secondary,.spec-tertiary{grid-column:span 1}
.spec-small{grid-column:span 1;padding:24px}

.spec-header{display:flex;gap:18px;margin-bottom:20px;align-items:start}
.spec-icon{
  position:relative;
  width:56px;height:56px;border-radius:12px;flex-shrink:0;
  background:var(--navy);color:var(--orange);
  display:grid;place-items:center;font-size:1.4rem;
}
.spec-badge{
  position:absolute;top:-6px;right:-6px;
  padding:3px 8px;border-radius:4px;
  background:var(--orange);color:var(--white);
  font-size:0.6rem;font-weight:700;
  font-family:var(--font-mono);letter-spacing:0.05em;
}
.spec-title h3{margin-bottom:4px;font-size:1.3rem}
.spec-code{font-size:0.75rem;color:var(--gray-dark);font-family:var(--font-mono);font-weight:600}

.spec-body p{margin-bottom:18px;line-height:1.7;font-size:0.95rem}
.spec-features{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:20px}
.feature{display:flex;align-items:center;gap:8px;font-size:0.85rem;color:var(--text)}
.feature i{color:var(--orange);font-size:0.8rem}

.spec-metrics{
  display:grid;grid-template-columns:repeat(3,1fr);gap:16px;
  padding:16px;border-radius:8px;
  background:var(--white);border:1px solid var(--gray);
  margin-bottom:20px;
}
.metric{text-align:center}
.metric-value{font-family:var(--font-mono);font-size:1.4rem;font-weight:700;color:var(--navy);line-height:1}
.metric-label{font-size:0.7rem;color:var(--gray-dark);margin-top:4px;font-family:var(--font-mono)}

.spec-cta{
  display:flex;align-items:center;gap:8px;
  margin-top:auto;padding-top:16px;
  color:var(--orange);font-weight:600;font-size:0.9rem;
  border-top:1px solid var(--gray);
}
.spec-cta i{transition:transform 0.3s}
.spec-cta:hover i{transform:translateX(4px)}

.spec-small .spec-icon{width:44px;height:44px;font-size:1.1rem;margin-bottom:14px}
.spec-small h4{margin-bottom:8px;font-size:1.05rem}
.spec-small p{font-size:0.85rem;margin:0}

/* ===== PROCESS ===== */
.process{background:var(--bg)}
.process-engineering{position:relative;max-width:900px;margin:0 auto}
.engineering-line{
  position:absolute;left:40px;top:40px;bottom:40px;width:3px;
  background:linear-gradient(180deg,var(--orange),var(--blue));
  opacity:0.3;
}
.phase-block{display:grid;grid-template-columns:80px 1fr;gap:40px;margin-bottom:60px;align-items:start;position:relative}
.phase-block:last-child{margin-bottom:0}
.phase-marker{position:relative;z-index:2}
.phase-num{
  width:80px;height:80px;border-radius:12px;
  background:var(--white);border:3px solid var(--navy);
  display:grid;place-items:center;
  font-family:var(--font-mono);font-size:1.6rem;font-weight:700;
  color:var(--navy);
  transition:var(--transition);
}
.phase-block:hover .phase-num{background:var(--orange);color:var(--white);border-color:var(--orange);transform:scale(1.05)}
.phase-pulse{
  position:absolute;inset:-6px;border-radius:12px;
  border:2px solid var(--orange);opacity:0.4;
  animation:pulseRing 2s infinite;
}
@keyframes pulseRing{0%{transform:scale(.95);opacity:.6}50%{transform:scale(1.1);opacity:0}100%{transform:scale(.95);opacity:0}}
.phase-content{
  padding:32px;border-radius:var(--radius-lg);
  background:var(--white);border:2px solid var(--gray);
  transition:var(--transition);
}
.phase-block:hover .phase-content{border-color:var(--orange);box-shadow:var(--shadow)}
.phase-header{display:flex;justify-content:space-between;align-items:start;margin-bottom:16px;gap:16px;flex-wrap:wrap}
.phase-header h3{margin:0}
.phase-duration{
  padding:6px 14px;border-radius:6px;
  background:var(--navy);color:var(--orange);
  font-size:0.75rem;font-weight:700;
  font-family:var(--font-mono);letter-spacing:0.05em;
  white-space:nowrap;
}
.phase-content p{margin-bottom:20px;line-height:1.7}
.phase-specs{display:flex;gap:16px;flex-wrap:wrap}
.phase-spec{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:6px;
  background:var(--bg);font-size:0.85rem;color:var(--text);
}
.phase-spec i{color:var(--orange);font-size:0.85rem}

/* ===== PORTFOLIO ===== */
.portfolio{background:var(--white)}
.portfolio-specs{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.project-spec{
  border-radius:var(--radius-lg);overflow:hidden;
  background:var(--bg);border:2px solid var(--gray);
  transition:var(--transition);
}
.project-spec:hover{border-color:var(--orange);transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.project-visual{
  height:220px;background-size:400% 400%;
  animation:gradientShift 12s ease infinite;
}
.pv-1{background:linear-gradient(135deg,#0A1929,#1a2f4a,#FF6B35)}
.pv-2{background:linear-gradient(135deg,#1a2f4a,#0A1929,#00D9FF)}
.pv-3{background:linear-gradient(135deg,#FF6B35,#e55a2b,#0A1929)}
.pv-4{background:linear-gradient(135deg,#00D9FF,#0A1929,#1a2f4a)}
@keyframes gradientShift{0%,100%{background-position:0% 50%}50%{background-position:100% 50%}}
.project-data{padding:28px}
.project-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.project-code{font-family:var(--font-mono);font-size:0.8rem;color:var(--gray-dark);font-weight:600}
.project-status{
  padding:4px 12px;border-radius:6px;
  background:var(--navy);color:var(--orange);
  font-size:0.7rem;font-weight:700;
  font-family:var(--font-mono);letter-spacing:0.05em;
}
.project-data h4{margin-bottom:18px;font-size:1.2rem}
.project-specs{display:flex;flex-direction:column;gap:10px}
.proj-spec{display:flex;justify-content:space-between;padding:8px 0;border-bottom:1px solid var(--gray)}
.proj-spec:last-child{border-bottom:0}
.spec-label{font-size:0.85rem;color:var(--gray-dark);font-weight:500}
.spec-value{font-family:var(--font-mono);font-size:0.85rem;color:var(--navy);font-weight:600}

/* ===== ARTICLE ===== */
.article{background:var(--bg)}
.article-container{display:grid;grid-template-columns:280px 1fr;gap:70px;align-items:start;width:min(1280px,92%);margin:0 auto}
.article-nav{position:sticky;top:100px;display:flex;flex-direction:column;gap:24px}
.nav-widget{
  padding:28px;border-radius:var(--radius);
  background:var(--white);border:2px solid var(--gray);
}
.widget-label{font-size:0.7rem;color:var(--orange);font-family:var(--font-mono);letter-spacing:0.1em;font-weight:700;margin-bottom:12px}
.nav-widget h4{margin-bottom:18px;font-size:1.1rem}
.toc{display:flex;flex-direction:column;gap:6px}
.toc a{
  padding:10px 12px;border-radius:6px;
  font-size:0.88rem;color:var(--text-light);
  border-left:3px solid transparent;
  transition:var(--transition);
}
.toc a:hover{background:var(--bg);color:var(--navy);border-left-color:var(--orange);padding-left:16px}

.nav-cta{
  padding:28px;border-radius:var(--radius);
  background:var(--navy);color:var(--white);
  text-align:center;
}
.cta-icon{
  width:56px;height:56px;border-radius:50%;
  background:var(--orange);color:var(--white);
  display:grid;place-items:center;font-size:1.3rem;
  margin:0 auto 16px;
}
.nav-cta h4{color:var(--white);margin-bottom:10px;font-size:1.1rem}
.nav-cta p{color:var(--gray);font-size:0.88rem;margin-bottom:20px}
.nav-cta .btn{background:var(--orange);color:var(--white)}

.article-header{margin-bottom:40px;padding-bottom:24px;border-bottom:2px solid var(--gray)}
.article-meta{display:flex;gap:24px;flex-wrap:wrap}
.meta-item{display:inline-flex;align-items:center;gap:8px;font-size:0.85rem;color:var(--gray-dark);font-family:var(--font-mono)}
.meta-item i{color:var(--orange);font-size:0.8rem}

.article-content h2{
  margin:56px 0 24px;font-size:1.8rem;
  padding-top:24px;border-top:2px solid var(--gray);
  position:relative;
}
.article-content h2:first-of-type{border-top:0;padding-top:0;margin-top:0}
.article-content h2::before{
  content:'';position:absolute;top:-2px;left:0;
  width:60px;height:4px;background:var(--orange);
}
.article-content h2:first-of-type::before{display:none}
.article-content h3{
  margin:36px 0 16px;color:var(--navy);
  font-size:1.3rem;
  padding-left:20px;position:relative;
}
.article-content h3::before{
  content:'';position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:12px;height:3px;background:var(--orange);
}
.article-content p{margin-bottom:20px;font-size:1.02rem;line-height:1.8}
.article-content a{color:var(--orange);font-weight:600;border-bottom:2px solid rgba(255,107,53,0.3)}
.article-content a:hover{border-bottom-color:var(--orange)}
.lead{font-size:1.2rem;line-height:1.7;color:var(--text);font-weight:500;margin-bottom:28px}
.article-content ul,.article-content ol{margin-bottom:24px;padding-left:0}
.article-content ul li,.article-content ol li{
  padding:10px 0 10px 32px;position:relative;
  font-size:0.98rem;line-height:1.7;
}
.article-content ul li::before{
  content:'▸';position:absolute;left:10px;top:10px;
  color:var(--orange);font-weight:700;font-size:1rem;
}

.callout{
  display:flex;gap:20px;align-items:flex-start;
  padding:28px;border-radius:var(--radius);margin:36px 0;
  border-left:4px solid;
}
.callout.technical{background:rgba(0,217,255,0.05);border-color:var(--blue)}
.callout-icon{font-size:1.8rem;flex-shrink:0;margin-top:2px}
.callout.technical .callout-icon{color:var(--blue)}
.callout-content strong{color:var(--navy);display:block;margin-bottom:8px}
.callout-content p{margin:0;line-height:1.7}

.weather-data{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  padding:28px;border-radius:var(--radius);margin:32px 0;
  background:var(--white);border:2px solid var(--gray);
}
.weather-stat{text-align:center}
.stat-value{font-family:var(--font-mono);font-size:2.2rem;font-weight:700;color:var(--navy);line-height:1;margin-bottom:6px}
.stat-label{font-size:0.8rem;color:var(--gray-dark);font-family:var(--font-mono)}

.pros-cons-box{
  display:grid;grid-template-columns:1fr 1fr;gap:24px;
  padding:28px;border-radius:var(--radius);margin:32px 0;
  background:var(--white);border:2px solid var(--gray);
}
.pros-column,.cons-column h4{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.pros-column h4 i{color:var(--orange)}
.cons-column h4 i{color:var(--gray-dark)}
.pros-column ul,.cons-column ul{padding:0}
.pros-column li,.cons-column li{padding:8px 0 8px 26px;position:relative;font-size:0.92rem;line-height:1.6}
.pros-column li::before{content:'✓';position:absolute;left:6px;color:var(--orange);font-weight:700}
.cons-column li::before{content:'✕';position:absolute;left:8px;color:var(--gray-dark);font-weight:700}

.warning-box{
  display:flex;gap:20px;align-items:flex-start;
  padding:28px;border-radius:var(--radius);margin:32px 0;
  background:rgba(255,107,53,0.05);border:2px solid var(--orange);
}
.warning-icon{font-size:1.8rem;color:var(--orange);flex-shrink:0;margin-top:2px}
.warning-content strong{color:var(--navy);display:block;margin-bottom:8px}
.warning-content p{margin:0;line-height:1.7}

.material-comparison{margin:32px 0;overflow-x:auto}
.tech-table{width:100%;border-collapse:collapse;background:var(--white);border-radius:var(--radius);overflow:hidden;border:2px solid var(--gray)}
.tech-table th,.tech-table td{padding:16px 20px;text-align:left;border-bottom:1px solid var(--gray)}
.tech-table th{background:var(--navy);color:var(--white);font-weight:700;font-size:0.88rem;font-family:var(--font-mono);letter-spacing:0.05em}
.tech-table td{font-size:0.92rem}
.tech-table tr:last-child td{border-bottom:0}
.tech-table tbody tr:hover{background:var(--bg)}

.spec-list li{padding:12px 16px 12px 40px;background:var(--white);border:1px solid var(--gray);border-radius:8px;margin-bottom:10px}

.cost-breakdown-box{
  display:flex;flex-direction:column;gap:24px;
  padding:32px;border-radius:var(--radius);margin:32px 0;
  background:var(--white);border:2px solid var(--gray);
}
.cost-category{padding-bottom:24px;border-bottom:2px solid var(--gray)}
.cost-category:last-child{border-bottom:0;padding-bottom:0}
.cost-header{display:flex;justify-content:space-between;align-items:start;margin-bottom:20px;gap:16px;flex-wrap:wrap}
.cost-header h4{margin:0}
.cost-range{font-family:var(--font-mono);font-size:1.2rem;font-weight:700;color:var(--orange)}
.cost-details{display:flex;flex-direction:column;gap:12px}
.cost-item{display:flex;justify-content:space-between;padding:10px 0;border-bottom:1px dashed var(--gray);font-size:0.92rem}
.cost-item:last-child{border-bottom:0}
.cost-item span:last-child{font-family:var(--font-mono);font-weight:600;color:var(--navy)}

.benefits-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin:40px 0}
.benefit-card{
  padding:28px;border-radius:var(--radius);
  background:var(--white);border:2px solid var(--gray);
  transition:var(--transition);
}
.benefit-card:hover{border-color:var(--orange);transform:translateY(-4px);box-shadow:var(--shadow)}
.benefit-icon{
  width:52px;height:52px;border-radius:10px;
  background:var(--navy);color:var(--orange);
  display:grid;place-items:center;font-size:1.2rem;
  margin-bottom:18px;
}
.benefit-card h4{margin-bottom:10px}
.benefit-card p{font-size:0.9rem;line-height:1.7;margin:0}

.maintenance-schedule{
  display:flex;flex-direction:column;gap:16px;
  padding:28px;border-radius:var(--radius);margin:32px 0;
  background:var(--white);border:2px solid var(--gray);
}
.maintenance-item{display:grid;grid-template-columns:120px 1fr;gap:24px;padding:20px 0;border-bottom:1px solid var(--gray)}
.maintenance-item:last-child{border-bottom:0}
.maintenance-freq{
  font-family:var(--font-mono);font-size:0.85rem;font-weight:700;
  color:var(--orange);text-align:center;
  padding:10px;border-radius:8px;
  background:var(--bg);
}
.maintenance-content h4{margin-bottom:10px}
.maintenance-content p{margin:0;font-size:0.92rem;line-height:1.7}

.warranty-comparison{margin:32px 0}

.mistakes-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin:32px 0}
.mistake-card{
  padding:24px;border-radius:var(--radius);
  background:var(--white);border:2px solid var(--gray);
  transition:var(--transition);
}
.mistake-card:hover{border-color:var(--orange)}
.mistake-icon{
  width:44px;height:44px;border-radius:50%;
  background:rgba(255,107,53,0.1);color:var(--orange);
  display:grid;place-items:center;font-size:1.1rem;
  margin-bottom:14px;
}
.mistake-card h4{margin-bottom:10px;font-size:1.05rem}
.mistake-card p{font-size:0.88rem;line-height:1.6;margin:0}

.why-us-list{display:flex;flex-direction:column;gap:20px;margin:32px 0}
.why-item{
  display:grid;grid-template-columns:80px 1fr;gap:24px;
  padding:28px;border-radius:var(--radius);
  background:var(--white);border:2px solid var(--gray);
  transition:var(--transition);
}
.why-item:hover{border-color:var(--orange);box-shadow:var(--shadow)}
.why-number{font-family:var(--font-mono);font-size:2rem;font-weight:700;color:var(--orange);line-height:1}
.why-content h4{margin-bottom:10px}
.why-content p{font-size:0.92rem;line-height:1.7;margin:0}

.article-cta{
  margin-top:60px;padding:40px;border-radius:var(--radius-lg);
  background:var(--navy);color:var(--white);
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-content h3{color:var(--white);margin-bottom:12px;font-size:1.5rem}
.cta-content p{color:var(--gray);margin:0;font-size:1rem;max-width:500px}
.article-cta .btn{background:var(--orange);color:var(--white)}

/* ===== FAQ ===== */
.faq{background:var(--white)}
.faq-accordion{max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:16px}
.faq-item{
  border-radius:var(--radius);
  background:var(--bg);border:2px solid var(--gray);
  overflow:hidden;transition:var(--transition);
}
.faq-item[open]{border-color:var(--orange)}
.faq-item summary{
  list-style:none;padding:24px 28px;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  font-weight:600;font-size:1.05rem;color:var(--navy);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary i{
  color:var(--orange);transition:transform 0.3s;flex-shrink:0;
  width:32px;height:32px;border-radius:8px;background:var(--white);
  display:grid;place-items:center;font-size:0.9rem;
}
.faq-item[open] summary i{transform:rotate(45deg);background:var(--orange);color:var(--white)}
.faq-content{padding:0 28px 24px;line-height:1.8;font-size:0.95rem}
.faq-content p:last-child{margin:0}

/* ===== TESTIMONIALS ===== */
.testimonials{background:var(--bg)}
.testimonials-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.testimonial-card{
  padding:32px;border-radius:var(--radius-lg);
  background:var(--white);border:2px solid var(--gray);
  transition:var(--transition);
}
.testimonial-card:hover{border-color:var(--orange);transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.testimonial-rating{color:var(--orange);margin-bottom:20px;font-size:1rem;letter-spacing:2px}
.testimonial-content p{font-size:0.98rem;line-height:1.8;margin-bottom:24px;font-style:italic}
.testimonial-author{display:flex;align-items:center;gap:16px;padding-top:20px;border-top:2px solid var(--gray)}
.author-avatar{
  width:52px;height:52px;border-radius:50%;flex-shrink:0;
  background:var(--navy);color:var(--orange);
  display:grid;place-items:center;font-weight:700;font-size:1rem;
  font-family:var(--font-mono);
}
.author-info strong{display:block;color:var(--navy);margin-bottom:4px}
.author-info span{font-size:0.85rem;color:var(--gray-dark)}

/* ===== CONTACT ===== */
.contact{background:var(--white)}
.contact-layout{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:start}
.contact-info h2{margin-bottom:18px}
.contact-info>p{font-size:1.05rem;line-height:1.7;margin-bottom:36px}
.contact-details{display:flex;flex-direction:column;gap:16px;margin-bottom:36px}
.contact-item{
  display:flex;gap:18px;align-items:center;
  padding:20px 24px;border-radius:var(--radius);
  background:var(--bg);border:2px solid var(--gray);
  transition:var(--transition);
}
.contact-item:hover{border-color:var(--orange);transform:translateX(4px);box-shadow:var(--shadow)}
.contact-icon{
  width:52px;height:52px;border-radius:10px;flex-shrink:0;
  background:var(--navy);color:var(--orange);
  display:grid;place-items:center;font-size:1.2rem;
}
.contact-text{flex:1}
.contact-text strong{display:block;color:var(--navy);font-size:0.85rem;font-family:var(--font-mono);letter-spacing:0.05em;margin-bottom:6px}
.contact-text span{color:var(--text);font-size:0.98rem}
.contact-actions{display:flex;gap:14px;flex-wrap:wrap}

.contact-form{
  padding:40px;border-radius:var(--radius-lg);
  background:var(--bg);border:2px solid var(--gray);
}
.contact-form h3{margin-bottom:10px;font-size:1.5rem}
.contact-form>p{margin-bottom:28px;color:var(--gray-dark);font-size:0.92rem}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.form-group{margin-bottom:22px}
.form-group label{display:block;margin-bottom:8px;font-size:0.88rem;font-weight:600;color:var(--navy);font-family:var(--font-mono)}
.form-group input,.form-group select,.form-group textarea{
  width:100%;padding:14px 16px;
  background:var(--white);border:2px solid var(--gray);border-radius:8px;
  color:var(--text);font-family:inherit;font-size:0.95rem;
  transition:var(--transition);
}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{
  outline:none;border-color:var(--orange);
  box-shadow:0 0 0 4px rgba(255,107,53,0.1);
}
.form-group textarea{resize:vertical;min-height:120px}
.form-disclaimer{margin-top:18px;font-size:0.8rem;color:var(--gray-dark);text-align:center;display:flex;align-items:center;justify-content:center;gap:6px}
.form-disclaimer i{color:var(--orange)}

/* ===== FOOTER ===== */
.footer{
  background:var(--navy);color:var(--gray);
  padding:80px 0 30px;
  border-top:4px solid var(--orange);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:50px;margin-bottom:50px}
.footer-col h4{color:var(--white);font-size:1rem;margin-bottom:22px;font-family:var(--font-mono);letter-spacing:0.05em}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col ul a{color:var(--gray);font-size:0.92rem;transition:var(--transition)}
.footer-col ul a:hover{color:var(--orange);padding-left:4px}

.footer-brand{display:flex;align-items:center;gap:14px;margin-bottom:20px}
.footer-logo{
  width:48px;height:48px;border-radius:8px;
  background:var(--orange);color:var(--white);
  display:grid;place-items:center;font-size:1.2rem;
}
.footer-name{display:flex;flex-direction:column;line-height:1.2}
.footer-name span{font-size:0.7rem;color:var(--gray);font-family:var(--font-mono);letter-spacing:0.1em}
.footer-name strong{color:var(--white);font-size:1.1rem}
.footer-col p{color:var(--gray);font-size:0.92rem;line-height:1.7;margin-bottom:20px}

.footer-social{display:flex;gap:10px;margin-top:20px}
.footer-social a{
  width:42px;height:42px;border-radius:8px;
  background:rgba(255,255,255,0.05);border:1px solid rgba(255,255,255,0.1);
  display:grid;place-items:center;color:var(--gray);
  transition:var(--transition);
}
.footer-social a:hover{background:var(--orange);color:var(--white);border-color:var(--orange);transform:translateY(-3px)}

.footer-contact{list-style:none}
.footer-contact li{display:flex;align-items:flex-start;gap:12px;color:var(--gray);font-size:0.92rem;margin-bottom:14px}
.footer-contact i{color:var(--orange);margin-top:4px;flex-shrink:0;width:16px}
.footer-contact a:hover{color:var(--white)}

.footer-bottom{border-top:1px solid rgba(255,255,255,0.1);padding-top:24px;text-align:center;font-size:0.85rem;color:var(--gray)}

/* ===== REVEAL ANIMATION ===== */
.reveal{opacity:0;transform:translateY(30px);transition:opacity 0.8s cubic-bezier(0.4,0,0.2,1),transform 0.8s cubic-bezier(0.4,0,0.2,1)}
.reveal.visible{opacity:1;transform:translateY(0)}

/* ===== RESPONSIVE ===== */
@media (max-width:1100px){
  .hero-blueprint{grid-template-columns:1fr;gap:60px}
  .services-grid{grid-template-columns:repeat(2,1fr)}
  .spec-primary{grid-column:span 2}
  .article-container{grid-template-columns:1fr;gap:50px}
  .article-nav{position:static;flex-direction:row;flex-wrap:wrap}
  .nav-widget,.nav-cta{flex:1;min-width:280px}
  .contact-layout{grid-template-columns:1fr;gap:50px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
  .testimonials-grid{grid-template-columns:1fr}
  .portfolio-specs{grid-template-columns:1fr}
}

@media (max-width:768px){
  section{padding:80px 0}
  .nav-links{
    position:fixed;top:78px;left:16px;right:16px;
    background:var(--navy);backdrop-filter:blur(20px);
    border:2px solid var(--orange);border-radius:12px;
    padding:20px;flex-direction:column;gap:4px;
    transform:translateY(-20px);opacity:0;pointer-events:none;
    transition:var(--transition);
  }
  .nav-links.active{transform:translateY(0);opacity:1;pointer-events:auto}
  .nav-links a{padding:14px 18px;display:block;width:100%}
  .nav-toggle{display:block}
  .nav-cta{display:none}
  
  .hero{padding:120px 0 40px}
  .hero-actions{flex-direction:column;width:100%}
  .hero-actions .btn{width:100%}
  
  .services-grid{grid-template-columns:1fr}
  .spec-primary,.spec-secondary,.spec-tertiary,.spec-small{grid-column:span 1}
  .spec-features{grid-template-columns:1fr}
  .spec-metrics{grid-template-columns:1fr;gap:12px}
  
  .engineering-line{left:20px}
  .phase-block{grid-template-columns:40px 1fr;gap:20px}
  .phase-num{width:40px;height:40px;font-size:1rem}
  .phase-content{padding:22px}
  .phase-header{flex-direction:column;gap:10px}
  .phase-specs{flex-direction:column}
  
  .weather-data{grid-template-columns:repeat(2,1fr)}
  .pros-cons-box{grid-template-columns:1fr}
  .benefits-grid{grid-template-columns:1fr}
  .mistakes-grid{grid-template-columns:1fr}
  .why-us-list{gap:16px}
  .why-item{grid-template-columns:60px 1fr;gap:16px;padding:22px}
  
  .form-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:36px}
  
  .article-cta{flex-direction:column;text-align:center;padding:32px}
  .cta-content p{max-width:100%}
  
  .maintenance-item{grid-template-columns:1fr;gap:12px}
  .maintenance-freq{text-align:left}
}

@media (max-width:500px){
  .hero-stats{grid-template-columns:1fr;gap:20px}
  .weather-data{grid-template-columns:1fr}
  .cost-header{flex-direction:column}
}