:root {
  --navy: #0e49b5;
  --navy-soft: #0a3a96;
  --gold: #f5a623;
  --gold-deep: #c97e10;
  --ink: #18202b;
  --muted: #687482;
  --line: #e9e6df;
  --bg: #ffffff;
  --ivory: #faf8f3;
  --ivory-deep: #f3efe6;
  --radius: 16px;
  --shadow-sm: 0 4px 16px rgba(6, 46, 128, 0.06);
  --shadow: 0 18px 48px rgba(6, 46, 128, 0.12);
  --max: 1160px;
  --ease: cubic-bezier(.22,.61,.36,1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Pretendard", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: var(--ink); background: var(--bg); line-height: 1.7;
  -webkit-font-smoothing: antialiased; letter-spacing: -0.01em;
  word-break: keep-all; overflow-wrap: break-word; text-wrap: pretty;
}
/* structure-aware line breaking */
h1, h2, h3, h4, .section-title, .hero h1, .page-hero h1,
.section-lead, .hero-sub, .page-hero-sub, .cta-band h2, .cta-band p { text-wrap: balance; }
p, li, .fi-text p, .solu-body p, .why-card p, .service-body p { text-wrap: pretty; }
.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 28px; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--gold); color: #2a1f06; font-weight: 700;
  padding: 13px 26px; border-radius: 999px; border: 1px solid var(--gold);
  cursor: pointer; font-size: 15px; transition: all .25s var(--ease); white-space: nowrap;
}
.btn:hover { background: var(--gold-deep); border-color: var(--gold-deep); transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.btn-sm { padding: 9px 20px; font-size: 14px; }
.btn-lg { padding: 16px 34px; font-size: 16px; }
.btn-block { width: 100%; }
.btn-glass { background: rgba(255,255,255,.12); color: #fff; border-color: rgba(255,255,255,.55); backdrop-filter: blur(6px); }
.btn-glass:hover { background: rgba(255,255,255,.22); border-color: #fff; }

/* ===== Header ===== */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  transition: all .3s var(--ease);
}
.site-header .logo { color: #fff; }
.site-header .nav a { color: rgba(255,255,255,.85); }
.site-header .header-tel { color: #fff; }
.site-header.scrolled { background: rgba(255,255,255,.94); backdrop-filter: blur(14px); border-bottom: 1px solid var(--line); box-shadow: var(--shadow-sm); }
.site-header.scrolled .logo { color: var(--navy); }
.site-header.scrolled .nav a { color: var(--muted); }
.site-header.scrolled .header-tel { color: var(--navy); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 74px; }
.logo { font-weight: 800; font-size: 22px; letter-spacing: -.5px; }
.logo span { color: var(--gold); }
.nav { display: flex; gap: 30px; }
.nav a { font-weight: 500; font-size: 15px; transition: color .2s; }
.nav a:hover, .nav a.active { color: var(--gold) !important; }
.nav a.active { font-weight: 700; }
.header-cta { display: flex; align-items: center; gap: 18px; }
.header-tel { font-weight: 700; font-size: 15px; }

/* ===== Hero ===== */
.hero { position: relative; min-height: 100vh; min-height: 100svh; display: flex; align-items: center; overflow: hidden; padding-bottom: 160px; }
.hero-slides { position: absolute; inset: 0; }
.hero-slide {
  position: absolute; inset: 0; background-size: cover; background-position: center;
  opacity: 0; transform: scale(1.08); transition: opacity 1.4s var(--ease);
}
.hero-slide.is-active { opacity: 1; animation: kenburns 6.4s ease-out forwards; }
@keyframes kenburns { from { transform: scale(1.08); } to { transform: scale(1.0); } }
.hero-overlay {
  position: absolute; inset: 0;
  background:
    linear-gradient(90deg, rgba(2,22,70,.82) 0%, rgba(2,22,70,.5) 48%, rgba(2,22,70,.2) 100%),
    linear-gradient(180deg, rgba(2,22,70,.35) 0%, rgba(2,22,70,.25) 60%, rgba(2,22,70,.6) 100%);
}
.hero-inner { position: relative; z-index: 2; padding: 120px 28px; color: #fff; }
.eyebrow { display: inline-block; font-weight: 700; font-size: 13px; letter-spacing: 2px; color: var(--gold); margin-bottom: 22px; padding: 7px 16px; border: 1px solid rgba(255,255,255,.25); border-radius: 999px; background: rgba(255,255,255,.06); backdrop-filter: blur(4px); }
.hero h1 { font-size: clamp(44px, 8vw, 88px); font-weight: 800; line-height: 1.04; letter-spacing: -2.5px; text-shadow: 0 2px 30px rgba(0,0,0,.3); }
.hero h1 .accent { color: var(--gold); }
.hero-sub { margin-top: 26px; font-size: clamp(16px, 2.2vw, 21px); color: rgba(255,255,255,.9); max-width: 580px; font-weight: 500; text-shadow: 0 1px 12px rgba(0,0,0,.4); }
.hero-cta { margin-top: 40px; display: flex; gap: 14px; flex-wrap: wrap; }

.hero-dots { position: absolute; bottom: 38px; right: 36px; z-index: 3; display: flex; gap: 10px; }
.hero-dots button { width: 32px; height: 4px; border: none; border-radius: 2px; background: rgba(255,255,255,.35); cursor: pointer; padding: 0; transition: background .3s; }
.hero-dots button.active { background: var(--gold); }
.scroll-cue { position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%); width: 26px; height: 42px; border: 2px solid rgba(255,255,255,.45); border-radius: 14px; z-index: 3; }
.scroll-cue span { position: absolute; top: 8px; left: 50%; width: 4px; height: 8px; background: var(--gold); border-radius: 2px; transform: translateX(-50%); animation: cue 1.6s var(--ease) infinite; }
@keyframes cue { 0% { opacity: 0; transform: translate(-50%, 0); } 40% { opacity: 1; } 100% { opacity: 0; transform: translate(-50%, 14px); } }

/* ===== Sub navigation (section tabs) ===== */
.subnav { position: sticky; top: 74px; z-index: 40; background: rgba(255,255,255,.92); backdrop-filter: blur(12px); border-bottom: 1px solid var(--line); }
.subnav-inner { display: flex; gap: 6px; overflow-x: auto; scrollbar-width: none; }
.subnav-inner::-webkit-scrollbar { display: none; }
.subnav a { position: relative; margin: 9px 2px; padding: 9px 18px; border-radius: 999px; font-size: 15px; font-weight: 600; color: var(--muted); white-space: nowrap; transition: all .2s var(--ease); }
.subnav a:hover { color: var(--navy); background: var(--ivory); }
.subnav a.active { color: #fff; font-weight: 700; background: var(--navy); box-shadow: 0 6px 16px rgba(6,46,128,.22); }
.subnav a.active::after { content: ""; position: absolute; left: 50%; transform: translateX(-50%); bottom: -10px; width: 28px; height: 3px; background: var(--gold); border-radius: 3px; }
.subnav a.active .sn-star { color: var(--gold); }
.sn-star { color: var(--gold); font-size: 11px; vertical-align: 2px; }
#scope, #defect, #waterproof, #safety { scroll-margin-top: 128px; }

/* ===== Sub-page hero ===== */
.page-hero { position: relative; min-height: 52vh; display: flex; align-items: center; background-size: cover; background-position: center; overflow: hidden; }
.page-hero-overlay { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(2,22,70,.85) 0%, rgba(2,22,70,.55) 60%, rgba(2,22,70,.35) 100%); }
.page-hero-inner { position: relative; z-index: 2; color: #fff; padding: 150px 28px 70px; }
.page-hero h1 { font-size: clamp(34px, 5.5vw, 60px); font-weight: 800; letter-spacing: -1.8px; line-height: 1.1; text-shadow: 0 2px 24px rgba(0,0,0,.3); }
.page-hero-sub { margin-top: 16px; font-size: clamp(16px, 2vw, 19px); color: rgba(255,255,255,.9); max-width: 560px; font-weight: 500; }
.crumb { margin-top: 26px; font-size: 13.5px; color: rgba(255,255,255,.7); display: flex; gap: 10px; align-items: center; }
.crumb a { color: rgba(255,255,255,.7); }
.crumb a:hover { color: var(--gold); }
.crumb span { opacity: .5; }

/* ===== Section link (teasers) ===== */
.section-link { display: inline-flex; align-items: center; gap: 8px; margin-top: 30px; font-weight: 700; color: var(--navy); font-size: 15px; transition: gap .2s var(--ease), color .2s; }
.section-link::after { content: "→"; color: var(--gold); transition: transform .2s var(--ease); }
.section-link:hover { color: var(--gold-deep); }
.section-link:hover::after { transform: translateX(4px); }
.head-row { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-bottom: 56px; flex-wrap: wrap; }
.head-row .section-head { margin-bottom: 0; }
.head-row .section-link { margin-top: 0; }

/* ===== Stat bar (pinned to hero bottom) ===== */
.hero-bottom { position: absolute; left: 0; right: 0; bottom: 0; z-index: 5; padding-bottom: 22px; }
.hero-bottom .hero-dots { position: static; display: flex; justify-content: center; gap: 10px; margin: 0 0 14px; }
.stat-bar {
  display: grid; grid-template-columns: repeat(4, 1fr);
  background: rgba(255,255,255,.97); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); position: relative; z-index: 4; overflow: hidden;
}
.stat { padding: 32px 24px; text-align: center; border-right: 1px solid var(--line); }
.stat:last-child { border-right: none; }
.stat strong { font-size: 46px; font-weight: 800; color: var(--navy); letter-spacing: -1.5px; line-height: 1; }
.stat .unit { font-size: 20px; font-weight: 700; color: var(--gold); margin-left: 3px; }
.stat .badge-check { color: var(--gold); }
.stat p { margin-top: 12px; font-size: 14px; color: var(--muted); font-weight: 600; }

/* ===== Sections ===== */
.section { padding: 60px 0; }
.section-alt { background: var(--ivory); }
.section-head { max-width: 880px; margin-bottom: 40px; }
.section-eyebrow { font-weight: 700; font-size: 12.5px; letter-spacing: 2.5px; color: var(--gold); }
.section-title { font-size: clamp(28px, 4.2vw, 44px); font-weight: 800; letter-spacing: -1.2px; margin-top: 14px; color: var(--navy); line-height: 1.2; }
.section-lead { margin-top: 16px; font-size: 17.5px; color: var(--muted); }
.section-lead em { font-style: normal; color: var(--gold-deep); font-weight: 600; }
@media (min-width: 768px) { .nowrap-title, .nowrap-line { white-space: nowrap; } }

/* ===== Service cards ===== */
.cards-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.service-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: all .3s var(--ease); }
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
.service-img { height: 200px; background-size: cover; background-position: center; position: relative; }
.service-img::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 50%, rgba(6,46,128,.35)); }
.service-num { position: absolute; top: 16px; left: 18px; z-index: 1; font-size: 13px; font-weight: 800; color: #fff; letter-spacing: 2px; background: rgba(6,46,128,.5); backdrop-filter: blur(4px); padding: 5px 12px; border-radius: 999px; }
.service-body { padding: 28px 28px 32px; }
.service-body h3 { font-size: 21px; font-weight: 800; letter-spacing: -.6px; color: var(--navy); }
.svc-flag { display: inline-block; vertical-align: middle; margin-left: 6px; font-size: 11px; font-weight: 800; color: #fff; background: var(--gold); padding: 3px 9px; border-radius: 999px; letter-spacing: 0; }
.service-body > p { color: var(--muted); font-size: 15px; margin-top: 8px; }
.check { list-style: none; margin-top: 18px; display: grid; gap: 10px; }
.check li { position: relative; padding-left: 26px; font-size: 14.5px; }
.check li::before { content: "✓"; position: absolute; left: 0; color: var(--gold-deep); font-weight: 800; }

/* ===== Scope (5-row process) ===== */
.scope-list { display: grid; gap: 18px; }
.scope-row { display: grid; grid-template-columns: 66px 210px 1fr 230px; gap: 28px; align-items: center; background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 24px 28px; transition: all .3s var(--ease); }
.scope-row:hover { box-shadow: var(--shadow); transform: translateY(-3px); border-color: transparent; }
.scope-no { font-size: 48px; font-weight: 800; color: var(--gold); letter-spacing: -2px; line-height: 1; text-align: center; }
.scope-img { height: 140px; border-radius: 12px; background-size: cover; background-position: center; box-shadow: var(--shadow-sm); }
.scope-main h3 { font-size: 20px; font-weight: 800; color: var(--navy); letter-spacing: -.5px; }
.scope-main > p { font-size: 14px; color: var(--muted); margin: 6px 0 14px; }
.scope-main .check { display: grid; grid-template-columns: 1fr 1fr; gap: 9px 22px; margin-top: 0; }
.scope-main .check li { font-size: 14px; }
.scope-spec { display: grid; gap: 12px; }
.ss-item { background: var(--ivory); border: 1px solid var(--line); border-radius: 12px; padding: 12px 16px; text-align: center; }
.ss-item strong { display: block; font-size: 24px; font-weight: 800; color: var(--navy); letter-spacing: -1px; line-height: 1; }
.ss-item span { display: block; font-size: 12px; color: var(--muted); margin-top: 6px; }

@media (max-width: 980px) {
  .scope-row { grid-template-columns: 52px 1fr; gap: 14px 18px; }
  .scope-no { font-size: 36px; grid-column: 1; grid-row: 1; }
  .scope-main { grid-column: 2; grid-row: 1; }
  .scope-img { grid-column: 1 / -1; grid-row: 2; height: 160px; }
  .scope-spec { grid-column: 1 / -1; grid-row: 3; grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .scope-main .check { grid-template-columns: 1fr; }
}

/* ===== Why ===== */
.why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.why-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 34px 28px; transition: all .3s var(--ease); }
.why-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
.why-no { font-size: 14px; font-weight: 800; color: var(--gold); letter-spacing: 1px; padding-bottom: 14px; margin-bottom: 16px; border-bottom: 2px solid var(--ivory-deep); }
.why-card h3 { font-size: 18px; font-weight: 800; color: var(--navy); margin-bottom: 8px; letter-spacing: -.4px; }
.why-card p { font-size: 14.5px; color: var(--muted); }
.why-tag { display: inline-block; margin-top: 16px; font-size: 12px; font-weight: 700; color: var(--gold-deep); background: var(--ivory-deep); padding: 6px 12px; border-radius: 999px; }

/* ===== Defect list ===== */
.defect-list { display: grid; gap: 12px; }
.defect-row { display: grid; grid-template-columns: 1fr 36px 1fr; align-items: center; gap: 8px; background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 18px 24px; transition: all .25s var(--ease); }
.defect-row:hover { box-shadow: var(--shadow-sm); transform: translateX(3px); }
.defect-row.is-key { border-color: var(--gold); background: linear-gradient(0deg, rgba(199,154,64,.06), rgba(199,154,64,.06)), #fff; box-shadow: var(--shadow-sm); }
.d-cause { font-size: 15px; font-weight: 700; color: var(--ink); display: flex; align-items: center; gap: 10px; }
.d-cause i { flex: none; width: 22px; height: 22px; display: grid; place-items: center; border-radius: 50%; background: #f3e0d6; color: #c2603f; font-style: normal; font-weight: 800; font-size: 13px; }
.d-cause b { font-size: 11px; font-weight: 800; color: #fff; background: #c2603f; padding: 3px 9px; border-radius: 999px; }
.d-arrow { text-align: center; color: var(--gold); font-weight: 800; font-size: 18px; }
.d-fix { font-size: 14.5px; font-weight: 600; color: var(--navy); position: relative; padding-left: 26px; }
.d-fix::before { content: "✓"; position: absolute; left: 0; color: var(--gold-deep); font-weight: 800; }

/* ===== Summary data table ===== */
.data-table-title { margin-top: 44px; font-size: 20px; font-weight: 800; color: var(--navy); letter-spacing: -.4px; }
.table-wrap { margin-top: 16px; overflow-x: auto; border-radius: 14px; box-shadow: var(--shadow-sm); }
.data-table { width: 100%; min-width: 640px; border-collapse: collapse; background: #fff; border: 1px solid var(--line); border-radius: 14px; overflow: hidden; }
.data-table thead th { background: var(--navy); color: #fff; text-align: left; padding: 16px 22px; font-size: 14px; font-weight: 700; }
.data-table tbody td { padding: 15px 22px; border-top: 1px solid var(--line); font-size: 14.5px; vertical-align: top; }
.data-table tbody tr:hover { background: var(--ivory); }
.dt-prob { font-weight: 800; color: var(--navy); white-space: nowrap; }
.dt-metric { font-weight: 700; color: var(--gold-deep); }
.dt-src { color: var(--muted); font-size: 13px; }
.data-note { margin-top: 14px; font-size: 12.5px; color: var(--muted); }
.need { display: inline-block; font-size: 12px; font-weight: 800; padding: 4px 11px; border-radius: 999px; white-space: nowrap; }
.need-yes { background: #f3e0d6; color: #c2603f; }
.need-no { background: #e3efe6; color: #2c7a52; }

/* ===== Waterproof decision flow ===== */
.flow { max-width: 1060px; margin: 8px auto 0; }
.flow-root { width: max-content; max-width: 100%; margin: 0 auto; background: var(--navy); color: #fff; text-align: center; padding: 18px 30px; border-radius: 14px; font-size: 18px; font-weight: 800; letter-spacing: -.4px; position: relative; box-shadow: var(--shadow-sm); }
.flow-root span { display: block; margin-top: 4px; font-size: 13px; font-weight: 600; color: var(--gold); }
.flow-root::after { content: ""; position: absolute; left: 50%; bottom: -28px; transform: translateX(-50%); width: 2px; height: 28px; background: var(--line); }
.flow-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; margin-top: 28px; position: relative; }
.flow-cols.flow-3 { grid-template-columns: repeat(3, 1fr); }
.flow-cols::before { content: ""; position: absolute; top: -28px; left: 25%; right: 25%; height: 2px; background: var(--line); }
.flow-cols.flow-3::before { left: 16.66%; right: 16.66%; }
.flow-col { position: relative; }
.flow-col::before { content: ""; position: absolute; top: -28px; left: 50%; transform: translateX(-50%); width: 2px; height: 28px; background: var(--line); }
.flow-step.is-cond { text-align: center; background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 16px; font-weight: 800; color: var(--navy); box-shadow: var(--shadow-sm); }
.flow-step.is-cond em { display: block; font-style: normal; font-size: 13px; font-weight: 600; color: var(--muted); margin-top: 4px; }
.flow-arrow { width: 2px; height: 22px; background: var(--line); margin: 0 auto; position: relative; }
.flow-arrow::after { content: ""; position: absolute; bottom: -1px; left: 50%; transform: translateX(-50%); border-left: 5px solid transparent; border-right: 5px solid transparent; border-top: 7px solid var(--line); }
.flow-result { text-align: center; font-weight: 800; font-size: 17px; padding: 13px; border-radius: 12px; }
.flow-result.r-yes { background: #f3e0d6; color: #c2603f; }
.flow-result.r-no { background: #e3efe6; color: #2c7a52; }
.flow-result.r-best { background: rgba(199,154,64,.16); color: var(--gold-deep); }
.flow-cases { display: grid; gap: 8px; margin-top: 16px; }
.fc-item { background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 10px 14px; }
.fc-item b { display: block; font-size: 13.5px; font-weight: 700; color: var(--navy); }
.fc-item span { display: block; margin-top: 2px; font-size: 12.5px; color: var(--muted); }
.fc-item.is-pre { border-color: var(--gold); background: linear-gradient(0deg, rgba(199,154,64,.06), rgba(199,154,64,.06)), #fff; }
@media (max-width: 980px) {
  .flow-cols, .flow-cols.flow-3 { grid-template-columns: 1fr; gap: 22px; }
  .flow-cols::before, .flow-col::before { display: none; }
}

/* ===== Feature (image + content) ===== */
.feature { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.feature-img { position: relative; min-height: 420px; border-radius: var(--radius); background-size: cover; background-position: center; box-shadow: var(--shadow); }
.feature-badge { position: absolute; left: 20px; bottom: 20px; background: var(--gold); color: #2a1f06; font-weight: 800; font-size: 14px; padding: 10px 18px; border-radius: 999px; box-shadow: var(--shadow-sm); }
.feature-body .check { margin-top: 24px; }
.feature-body .check li { font-size: 15px; }
.feature-body .check strong { color: var(--navy); font-weight: 800; }

/* ===== Real field issues ===== */
.field-issues { margin-top: 8px; }
.fi-item { display: grid; grid-template-columns: 170px 1fr 190px; gap: 28px; align-items: center; padding: 30px 0; border-top: 1px solid var(--line); transition: background .25s var(--ease); }
.fi-item:first-child { border-top: none; padding-top: 8px; }
.fi-item:last-child { border-bottom: 1px solid var(--line); }
.fi-no { grid-column: 1; grid-row: 1; text-align: center; font-size: 92px; font-weight: 800; line-height: .9; letter-spacing: -5px; color: var(--gold); transition: color .3s var(--ease); }
.fi-text { grid-column: 2; grid-row: 1; }
.fi-stat { grid-column: 3; grid-row: 1; }
.fi-item:hover .fi-no { color: var(--gold-deep); }
/* zigzag: even rows mirror number ⇄ stat (desktop only) */
@media (min-width: 981px) {
  .fi-item:nth-child(even) .fi-no { grid-column: 3; grid-row: 1; }
  .fi-item:nth-child(even) .fi-stat { grid-column: 1; grid-row: 1; }
}
.fi-text h3 { font-size: 22px; font-weight: 800; color: var(--navy); letter-spacing: -.5px; }
.fi-text > p { font-size: 15px; color: var(--muted); margin-top: 8px; }
.fi-text > p strong { color: var(--ink); font-weight: 800; }
.fi-fix { font-size: 14.5px; color: var(--navy); margin-top: 14px; background: #fff; border: 1px solid var(--line); padding: 12px 16px; border-radius: 10px; }
.fi-fix b { color: var(--gold-deep); margin-right: 8px; font-weight: 800; }
.fi-src { display: inline-block; margin-top: 12px; font-size: 12px; color: var(--muted); }
.fi-stat { text-align: center; background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 28px 18px; box-shadow: var(--shadow-sm); }
.fi-stat strong { display: block; font-size: 48px; font-weight: 800; color: var(--navy); letter-spacing: -2px; line-height: 1; }
.fi-stat .u { font-size: 22px; color: var(--gold); letter-spacing: 0; }
.fi-stat.is-badge strong { color: var(--gold-deep); font-size: 42px; letter-spacing: -1px; }
.fi-stat em { display: block; font-style: normal; margin-top: 12px; font-size: 12.5px; color: var(--muted); font-weight: 600; line-height: 1.45; }

/* ===== Differentiator rotator ===== */
.diff-rotator { display: grid; grid-template-columns: 0.92fr 1.08fr; gap: 24px; }
.diff-tabs { display: flex; flex-direction: column; gap: 12px; }
.diff-tab { display: grid; grid-template-columns: auto 1fr; gap: 14px; align-items: center; text-align: left; background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 18px 22px; cursor: pointer; position: relative; overflow: hidden; transition: all .25s var(--ease); font-family: inherit; }
.diff-tab:hover { border-color: var(--gold); transform: translateX(3px); }
.diff-tab.active { border-color: transparent; box-shadow: var(--shadow); }
.dt-no { font-size: 15px; font-weight: 800; color: var(--gold); }
.dt-text strong { display: block; font-size: 16.5px; font-weight: 800; color: var(--navy); letter-spacing: -.3px; }
.dt-text em { font-style: normal; font-size: 13px; color: var(--muted); }
.dt-bar { position: absolute; left: 0; bottom: 0; height: 3px; width: 100%; background: var(--ivory-deep); opacity: 0; }
.diff-tab.active .dt-bar { opacity: 1; }
.dt-bar i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--gold), var(--gold-deep)); }

.diff-stage { position: relative; border-radius: 16px; overflow: hidden; min-height: 430px; box-shadow: var(--shadow); }
.diff-slide { position: absolute; inset: 0; background-size: cover; background-position: center; opacity: 0; transform: scale(1.06); transition: opacity .8s var(--ease), transform 6.5s var(--ease); display: flex; align-items: flex-end; pointer-events: none; }
.diff-slide.active { opacity: 1; transform: scale(1); pointer-events: auto; }
.diff-shade { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(2,22,70,.1) 0%, rgba(2,22,70,.5) 42%, rgba(2,22,70,.92) 100%); }
.diff-content { position: relative; z-index: 1; padding: 36px; color: #fff; width: 100%; }
.diff-kicker { font-size: 12.5px; font-weight: 700; letter-spacing: 2px; color: var(--gold); }
.diff-content h3 { font-size: 27px; font-weight: 800; margin: 8px 0 10px; letter-spacing: -.7px; }
.diff-content > p { color: rgba(255,255,255,.88); font-size: 15px; max-width: 520px; }
.diff-graph { margin-top: 24px; display: grid; gap: 13px; max-width: 480px; }
.dg-row { display: grid; grid-template-columns: 132px 1fr 50px; gap: 12px; align-items: center; font-size: 13px; }
.dg-row span { color: rgba(255,255,255,.82); }
.dg-track { height: 9px; background: rgba(255,255,255,.18); border-radius: 6px; overflow: hidden; }
.dg-track i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--gold-deep), var(--gold)); border-radius: 6px; transition: width 1.1s var(--ease); }
.dg-row b { color: #fff; font-weight: 800; text-align: right; }

/* ===== Comparison table ===== */
.compare { margin-top: 40px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm); }
.compare-head, .compare-row { display: grid; grid-template-columns: 1.1fr 1.4fr 1.4fr; align-items: center; }
.compare-head { background: var(--navy); color: #fff; }
.compare-head span { padding: 18px 24px; font-weight: 700; font-size: 15px; }
.compare-head .compare-us { color: var(--gold); }
.compare-head .compare-them { color: rgba(255,255,255,.6); }
.compare-row { border-top: 1px solid var(--line); }
.compare-row span { padding: 16px 24px; font-size: 14.5px; }
.compare-row .compare-label { font-weight: 700; color: var(--navy); background: var(--ivory); align-self: stretch; display: flex; align-items: center; }
.compare-row .compare-us { font-weight: 600; color: var(--ink); }
.compare-row .compare-them { color: var(--muted); }
.compare-row i { display: inline-flex; width: 20px; height: 20px; align-items: center; justify-content: center; border-radius: 50%; font-style: normal; font-size: 12px; font-weight: 800; margin-right: 10px; vertical-align: -3px; }
.compare-us i { background: rgba(199,154,64,.18); color: var(--gold-deep); }
.compare-them i { background: #f0eae3; color: #b6a892; }

/* ===== Proof strip ===== */
.proof { margin-top: 24px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.proof-item { text-align: center; padding: 30px 18px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); }
.proof-item strong { font-size: 44px; font-weight: 800; color: var(--navy); letter-spacing: -2px; }
.proof-item strong .u { font-size: 20px; color: var(--gold); margin-left: 2px; letter-spacing: 0; }
.proof-item p { margin-top: 8px; font-size: 14px; color: var(--muted); font-weight: 600; }

/* ===== Process timeline ===== */
.timeline { position: relative; padding-top: 8px; }
.tl-track { position: absolute; top: 40px; left: 0; right: 0; height: 3px; background: var(--ivory-deep); border-radius: 3px; }
.tl-progress { position: absolute; inset: 0; width: 0; background: linear-gradient(90deg, var(--gold), var(--gold-deep)); border-radius: 3px; transition: width 1.8s var(--ease); }
.reveal.is-visible .tl-progress, .timeline.is-visible .tl-progress { width: 100%; }
.tl-steps { list-style: none; display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
.tl-step { position: relative; text-align: center; padding: 0 6px; display: flex; flex-direction: column; }
.tl-body { flex: 1; display: flex; flex-direction: column; }
.tl-node {
  width: 64px; height: 64px; margin: 0 auto 22px; border-radius: 50%;
  background: #fff; border: 2px solid var(--line); display: grid; place-items: center;
  color: var(--navy); box-shadow: var(--shadow-sm); position: relative; z-index: 1; transition: all .3s var(--ease);
}
.tl-node svg { width: 28px; height: 28px; }
.tl-node::before { content: ""; position: absolute; inset: -5px; border-radius: 50%; border: 2px solid var(--gold); opacity: 0; }
.tl-step.is-visible .tl-node::before { animation: pulsering 2.6s var(--ease) infinite; }
.tl-step:nth-child(2).is-visible .tl-node::before { animation-delay: .5s; }
.tl-step:nth-child(3).is-visible .tl-node::before { animation-delay: 1s; }
.tl-step:nth-child(4).is-visible .tl-node::before { animation-delay: 1.5s; }
.tl-step:nth-child(5).is-visible .tl-node::before { animation-delay: 2s; }
@keyframes pulsering { 0% { transform: scale(.92); opacity: .45; } 70% { transform: scale(1.3); opacity: 0; } 100% { opacity: 0; } }
.tl-step:hover .tl-node { border-color: var(--gold); color: var(--gold-deep); transform: translateY(-4px); box-shadow: var(--shadow); }
.tl-step:hover .tl-node::before { animation: none; }
.tl-no { display: block; font-size: 11.5px; font-weight: 800; letter-spacing: 1.5px; color: var(--gold-deep); }
.tl-step h4 { font-size: 17px; font-weight: 800; color: var(--navy); margin-top: 6px; letter-spacing: -.4px; }
.tl-day { display: inline-block; margin-top: 10px; font-size: 12px; font-weight: 700; color: #fff; background: var(--navy); padding: 4px 12px; border-radius: 999px; }
.tl-step p { font-size: 13.5px; color: var(--muted); margin-top: 12px; }
.tl-out { display: inline-block; margin-top: 14px; font-size: 12px; font-weight: 600; color: var(--gold-deep); border-top: 1px dashed var(--line); padding-top: 12px; width: 100%; }
.tl-out { margin-bottom: 18px; }
.tl-img { height: 116px; margin-top: auto; border-radius: 12px; background-size: cover; background-position: center; box-shadow: var(--shadow-sm); transition: transform .4s var(--ease); }
.tl-step:hover .tl-img { transform: scale(1.03); }

/* ===== Solutions ===== */
.cards-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 22px; }
.solution-card {
  position: relative; height: 280px; border-radius: var(--radius); overflow: hidden;
  background-size: cover; background-position: center; display: flex; align-items: flex-end;
  transition: all .3s var(--ease);
}
.solution-card::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(2,22,70,.05) 30%, rgba(2,22,70,.85)); transition: background .3s; }
.solution-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.solution-card:hover::after { background: linear-gradient(180deg, rgba(6,46,128,.3) 0%, rgba(2,22,70,.9)); }
.solution-body { position: relative; z-index: 1; padding: 24px; color: #fff; }
.solution-body h3 { font-size: 19px; font-weight: 800; letter-spacing: -.4px; }
.solution-body p { font-size: 13.5px; color: rgba(255,255,255,.82); margin-top: 4px; }

/* ===== Solutions (image + description, unified) ===== */
.solu-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
@media (max-width: 980px) { .solu-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 560px) { .solu-grid { grid-template-columns: repeat(2, 1fr); } }
.solu-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: all .3s var(--ease); }
.solu-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
.solu-img { height: 156px; background-size: cover; background-position: center; }
.solu-body { padding: 22px 22px 26px; }
.solu-no { font-size: 13px; font-weight: 800; color: var(--gold); letter-spacing: 1px; }
.solu-body h3 { font-size: 18px; font-weight: 800; color: var(--navy); margin: 8px 0 8px; letter-spacing: -.4px; }
.solu-body p { font-size: 14px; color: var(--muted); line-height: 1.65; }

/* ===== Projects ===== */
.projects-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.project-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: all .3s var(--ease); }
.project-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
.project-img { height: 220px; background-size: cover; background-position: center; position: relative; }
.project-tag { position: absolute; top: 16px; left: 16px; font-size: 12.5px; font-weight: 700; color: #fff; background: rgba(6,46,128,.78); backdrop-filter: blur(4px); padding: 6px 14px; border-radius: 999px; }
.project-body { padding: 24px 26px 28px; }
.project-cap { font-size: 13px; font-weight: 700; color: var(--gold-deep); letter-spacing: .5px; }
.project-body h3 { font-size: 19px; font-weight: 800; color: var(--navy); margin: 8px 0; letter-spacing: -.4px; }
.project-body p { font-size: 14.5px; color: var(--muted); }

/* ===== CTA band ===== */
.cta-band { position: relative; background-size: cover; background-position: center; background-attachment: fixed; }
.cta-overlay { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(6,46,128,.92), rgba(6,46,128,.7)); }
.cta-band-inner { position: relative; z-index: 1; display: flex; align-items: center; justify-content: space-between; gap: 32px; padding: 80px 28px; flex-wrap: wrap; color: #fff; }
.cta-band h2 { font-size: clamp(24px, 3.6vw, 36px); font-weight: 800; letter-spacing: -.8px; }
.cta-band p { margin-top: 10px; color: rgba(255,255,255,.85); font-size: 16px; }

/* ===== Safety highlight band ===== */
.safety { position: relative; padding: 72px 0; background-size: cover; background-position: center; background-attachment: fixed; color: #fff; }
.safety-overlay { position: absolute; inset: 0; background: linear-gradient(160deg, rgba(4,32,94,.95), rgba(2,22,70,.9)); }
.safety .container { position: relative; z-index: 1; }
.safety .section-eyebrow { color: var(--gold); }
.safety .section-title { color: #fff; }
.safety .section-lead { color: rgba(255,255,255,.85); }
.safety-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-bottom: 22px; }
.s-stat { background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.15); border-radius: 14px; padding: 24px 20px; text-align: center; }
.s-stat strong { display: block; font-size: 40px; font-weight: 800; color: var(--gold); letter-spacing: -2px; line-height: 1; }
.s-stat .u { font-size: 20px; }
.s-stat p { margin-top: 10px; font-size: 12.5px; color: rgba(255,255,255,.8); line-height: 1.5; }
.s-stat p b { color: #fff; font-weight: 800; }
.safety-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.safety-card { background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.14); border-radius: 16px; padding: 28px 24px; transition: all .3s var(--ease); }
.safety-card:hover { background: rgba(255,255,255,.1); transform: translateY(-6px); border-color: var(--gold); }
.safety-icon { width: 54px; height: 54px; border-radius: 13px; display: grid; place-items: center; background: rgba(199,154,64,.18); color: var(--gold); margin-bottom: 18px; }
.safety-icon svg { width: 28px; height: 28px; }
.safety-card h3 { font-size: 18px; font-weight: 800; color: #fff; margin-bottom: 8px; letter-spacing: -.4px; }
.safety-card p { font-size: 14px; color: rgba(255,255,255,.78); }

/* ===== Contact ===== */
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 60px; align-items: start; }
.contact-list { list-style: none; margin-top: 30px; display: grid; gap: 14px; }
.contact-list li { font-size: 16px; }
.contact-list span { display: inline-block; width: 70px; color: var(--gold-deep); font-weight: 700; }
.lead-form { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 36px; box-shadow: var(--shadow); }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13.5px; font-weight: 600; margin-bottom: 7px; }
.field input, .field select, .field textarea {
  width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px;
  font-size: 15px; font-family: inherit; color: var(--ink); background: var(--ivory);
  transition: border-color .2s, box-shadow .2s, background .2s;
}
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--gold); background: #fff; box-shadow: 0 0 0 3px rgba(199,154,64,.18); }
.field textarea { resize: vertical; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-note { font-size: 13px; color: var(--muted); text-align: center; margin-top: 14px; }

/* ===== Footer ===== */
.site-footer { background: var(--navy); color: rgba(255,255,255,.7); padding: 60px 0 28px; }
.site-footer .logo { color: #fff; }
.footer-top { display: flex; justify-content: space-between; gap: 48px; flex-wrap: wrap; padding-bottom: 34px; border-bottom: 1px solid rgba(255,255,255,.12); }
.footer-brand { flex: 1 1 360px; max-width: 440px; }
.footer-links { display: flex; gap: 72px; }
.footer-brand .footer-tag { font-size: 14px; color: var(--gold); margin-top: 10px; font-weight: 600; }
.footer-brand .footer-desc { font-size: 14px; color: rgba(255,255,255,.6); margin-top: 14px; max-width: 380px; line-height: 1.75; }
.footer-col h4 { font-size: 14px; font-weight: 800; color: #fff; margin-bottom: 16px; letter-spacing: -.2px; }
.footer-col a, .footer-col span { display: block; font-size: 14px; color: rgba(255,255,255,.62); margin-bottom: 11px; transition: color .2s; }
.footer-col a:hover { color: var(--gold); }
.footer-cta { margin-top: 4px; color: var(--gold) !important; font-weight: 700; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 10px 30px; padding: 20px 0; border-bottom: 1px solid rgba(255,255,255,.12); }
.footer-nav a { font-size: 14px; font-weight: 600; color: rgba(255,255,255,.72); transition: color .2s; }
.footer-nav a:hover { color: var(--gold); }
.footer-bottom { display: flex; justify-content: space-between; align-items: flex-end; gap: 18px; flex-wrap: wrap; padding-top: 24px; }
.footer-biz { font-size: 12.5px; color: rgba(255,255,255,.45); line-height: 1.7; }
.copyright { font-size: 12.5px; color: rgba(255,255,255,.45); }
@media (max-width: 760px) {
  .footer-top { flex-direction: column; gap: 30px; }
  .footer-links { gap: 48px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

/* ===== Floating market card (SMP·REC) ===== */
.market-float {
  position: fixed; right: max(28px, calc((100vw - var(--max)) / 2 + 28px)); top: 50%; transform: translateY(-50%);
  z-index: 45; background: #fff; border: 1px solid var(--line); border-radius: 16px;
  box-shadow: var(--shadow); padding: 20px 24px; min-width: 184px;
}
.market-float::before {
  content: ""; position: absolute; left: 0; top: 18px; bottom: 18px; width: 4px;
  background: var(--gold); border-radius: 4px;
}
.mf-title { font-size: 12px; font-weight: 800; letter-spacing: 1px; color: var(--gold-deep); text-align: center; margin-bottom: 13px; }
.mf-row { display: flex; align-items: baseline; justify-content: space-between; gap: 18px; padding: 5px 0; }
.mf-k { font-size: 14px; font-weight: 800; color: var(--navy); }
.mf-v { font-size: 20px; font-weight: 800; color: var(--ink); letter-spacing: -.4px; }
.mf-u { font-style: normal; font-size: 10.5px; font-weight: 600; color: var(--muted); margin-left: 3px; }
.mf-date { margin-top: 13px; padding-top: 10px; border-top: 1px solid var(--line); font-size: 11.5px; color: var(--muted); text-align: center; }
@media (max-width: 600px) {
  .market-float { top: auto; bottom: 14px; right: 12px; transform: none; padding: 10px 13px; min-width: 0; display: flex; align-items: center; gap: 14px; }
  .market-float::before { top: 10px; bottom: 10px; }
  .mf-title, .mf-date { display: none; }
  .mf-row { flex-direction: column; gap: 0; padding: 0; align-items: center; }
}

/* ===== Reveal ===== */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }

/* ===== Responsive ===== */
@media (max-width: 980px) {
  .cards-3, .why-grid, .projects-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .cta-band { background-attachment: scroll; }
  /* timeline -> vertical */
  .tl-track { display: none; }
  .tl-steps { grid-template-columns: 1fr; gap: 0; position: relative; }
  .tl-steps::before { content: ""; position: absolute; left: 31px; top: 24px; bottom: 24px; width: 3px; background: var(--ivory-deep); }
  .tl-step { text-align: left; display: grid; grid-template-columns: 64px 1fr; column-gap: 22px; padding: 18px 0; align-items: start; }
  .tl-node { margin: 0; }
  .tl-out { width: auto; }
  .tl-img { max-width: 320px; }
}
@media (max-width: 980px) {
  .proof { grid-template-columns: repeat(2, 1fr); }
  .diff-rotator { grid-template-columns: 1fr; }
  .diff-stage { min-height: 360px; }
  .feature { grid-template-columns: 1fr; gap: 28px; }
  .feature-img { min-height: 280px; }
  .safety { background-attachment: scroll; }
  .safety-stats, .safety-grid { grid-template-columns: repeat(2, 1fr); }
  .fi-item { grid-template-columns: 70px 1fr; gap: 8px 22px; }
  .fi-no { grid-column: 1; grid-row: 1; font-size: 60px; letter-spacing: -3px; }
  .fi-text { grid-column: 2; grid-row: 1; }
  .fi-stat { grid-column: 1 / -1; grid-row: 2; display: flex; align-items: center; gap: 18px; text-align: left; padding: 18px 22px; margin-top: 6px; }
  .fi-stat strong { font-size: 40px; }
  .fi-stat em { margin-top: 0; }
}
@media (max-width: 560px) {
  .defect-row { grid-template-columns: 1fr; gap: 6px; text-align: left; }
  .defect-row .d-arrow { display: none; }
  .d-fix { padding-left: 26px; }
}
@media (max-width: 560px) {
  .dg-row { grid-template-columns: 110px 1fr 44px; gap: 8px; font-size: 12px; }
  .diff-content { padding: 24px; }
}
@media (max-width: 760px) {
  .nav { display: none; }
  .hero { padding-bottom: 240px; }
  .stat-bar { grid-template-columns: 1fr 1fr; }
  .stat:nth-child(2) { border-right: none; }
  .stat:nth-child(1), .stat:nth-child(2) { border-bottom: 1px solid var(--line); }
  .compare-head { display: none; }
  .compare-row { grid-template-columns: 1fr; }
  .compare-row span { padding: 10px 20px; }
  .compare-row .compare-label { background: var(--navy); color: #fff; padding: 12px 20px; }
  .compare-row .compare-us { padding-top: 14px; }
  .compare-row .compare-us::before { content: "SOLARBUILD "; font-size: 11px; font-weight: 800; color: var(--gold-deep); }
  .compare-row .compare-them { padding-bottom: 14px; border-bottom: 0; }
  .compare-row .compare-them::before { content: "일반 EPC "; font-size: 11px; font-weight: 800; color: #b6a892; }
}
@media (max-width: 560px) {
  .cards-3, .why-grid, .projects-grid { grid-template-columns: 1fr; }
  .safety-stats, .safety-grid { grid-template-columns: 1fr; }
  .row { grid-template-columns: 1fr; }
  .section { padding: 72px 0; }
  .header-tel { display: none; }
  .hero-dots { right: 20px; }
}