/* ═══════════════════════════════════════════════
   Pexalink — Main Stylesheet (Ant Design Language)
   ═══════════════════════════════════════════════ */

/* ── Screen reader only ── */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ── 0. Design Tokens (Ant Design 5.x — Dark) ── */
:root{
  color-scheme:dark;

  /* Brand */
  --color-primary:        #1668dc;
  --color-primary-hover:  #3c89e8;
  --color-primary-active: #1554ad;
  --color-primary-bg:     #111a2c;
  --color-primary-border: #15325b;

  /* Neutral */
  --color-text:           rgba(255,255,255,.85);
  --color-text-secondary: rgba(255,255,255,.65);
  --color-text-tertiary:  rgba(255,255,255,.45);
  --color-text-quaternary:rgba(255,255,255,.25);
  --color-border:         #424242;
  --color-border-secondary:#303030;
  --color-fill:           rgba(255,255,255,.18);
  --color-fill-secondary: rgba(255,255,255,.12);
  --color-bg-base:        #141414;
  --color-bg-layout:      #000000;
  --color-bg-elevated:    #1f1f1f;
  --color-bg-spotlight:   rgba(255,255,255,.12);

  /* Semantic */
  --color-success:        #49aa19;
  --color-warning:        #d89614;
  --color-error:          #dc4446;
  --color-info:           #1668dc;

  /* Shadow (Ant Design elevation — dark) */
  --shadow-1: 0 1px 2px 0 rgba(0,0,0,.48),0 1px 6px -1px rgba(0,0,0,.32),0 2px 4px 0 rgba(0,0,0,.32);
  --shadow-2: 0 6px 16px 0 rgba(0,0,0,.32),0 3px 6px -4px rgba(0,0,0,.48),0 9px 28px 8px rgba(0,0,0,.20);
  --shadow-3: 0 1px 2px -2px rgba(0,0,0,.64),0 3px 6px 0 rgba(0,0,0,.48),0 5px 12px 4px rgba(0,0,0,.36);

  /* Border radius (Ant Design) */
  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Typography scale */
  --font-size-xs:   12px;
  --font-size-sm:   14px;
  --font-size-base: 16px;
  --font-size-lg:   20px;
  --font-size-xl:   24px;
  --font-size-2xl:  30px;
  --font-size-3xl:  38px;
  --font-size-4xl:  46px;

  /* Spacing */
  --space-xs:  4px;
  --space-sm:  8px;
  --space-md:  16px;
  --space-lg:  24px;
  --space-xl:  32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;

  /* Transition */
  --motion-duration-fast:   0.1s;
  --motion-duration-mid:    0.2s;
  --motion-duration-slow:   0.3s;
  --motion-ease-out:        cubic-bezier(0.215,0.61,0.355,1);

  /* Brand accent for hero gradient area */
  --brand-blue-1: #111a2c;
  --brand-blue-6: #1668dc;
  --brand-blue-7: #1554ad;
}

/* ── 1. Reset ── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,'Inter','Segoe UI',sans-serif;
  font-size:var(--font-size-sm);
  color:var(--color-text);
  background:var(--color-bg-base);
  overflow-x:hidden;
  line-height:1.5714;
  -webkit-font-smoothing:antialiased;
}
a{text-decoration:none;color:inherit}
ul{list-style:none}
img{max-width:100%}
strong{font-weight:600}
button{cursor:pointer;border:none;background:none;font-family:inherit}

.container{max-width:1200px;margin:0 auto;padding:0 var(--space-lg)}

/* ── 2. NAV ── */
#navbar{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(20,20,20,.85);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--color-border-secondary);
  transition:box-shadow var(--motion-duration-slow) var(--motion-ease-out),
             background var(--motion-duration-slow) var(--motion-ease-out);
}
#navbar.scrolled{
  background:rgba(20,20,20,.95);
  box-shadow:var(--shadow-1);
}
.nav-inner{
  max-width:1200px;margin:0 auto;padding:0 var(--space-lg);
  height:64px;display:flex;align-items:center;gap:var(--space-xl);
}
.nav-logo{
  display:flex;align-items:center;gap:10px;flex-shrink:0;
  text-decoration:none;
}
.logo-img{width:28px;height:28px;object-fit:contain}
.logo-text{
  font-size:18px;font-weight:700;
  color:var(--color-text);letter-spacing:-.3px;
}
.logo-em{color:var(--color-primary)}

.nav-links{
  display:flex;align-items:center;gap:4px;margin-left:auto;
}
.nav-links > li > a{
  display:flex;align-items:center;gap:6px;
  padding:6px 12px;border-radius:var(--radius-sm);
  font-size:var(--font-size-sm);font-weight:500;
  color:var(--color-text-secondary);
  transition:color var(--motion-duration-mid),background var(--motion-duration-mid);
}
.nav-links > li > a:hover{color:var(--color-primary);background:var(--color-primary-bg)}
.nav-links > li > a.nav-cta{
  background:var(--color-primary);color:#fff;
  padding:6px 16px;border-radius:var(--radius-sm);
  font-weight:600;
  transition:background var(--motion-duration-mid);
}
.nav-links > li > a.nav-cta:hover{background:var(--color-primary-hover)}

/* Dropdown */
.nav-dropdown{position:relative}
.dropdown-toggle{cursor:pointer}
.dropdown-toggle .fa-chevron-down{
  font-size:10px;color:var(--color-text-quaternary);
  transition:transform var(--motion-duration-mid);
}
.nav-dropdown:hover .fa-chevron-down,
.nav-dropdown.open  .fa-chevron-down{transform:rotate(180deg)}

.dropdown-menu{
  position:absolute;top:100%;left:50%;
  transform:translateX(-50%) translateY(4px);
  padding-top:8px;
  opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity var(--motion-duration-mid) var(--motion-ease-out),
             transform var(--motion-duration-mid) var(--motion-ease-out),
             visibility var(--motion-duration-mid);
  z-index:200;
}
.dropdown-menu-inner{
  background:var(--color-bg-elevated);
  border:1px solid var(--color-border);
  border-radius:var(--radius-md);
  padding:var(--space-xs);
  min-width:280px;
  box-shadow:var(--shadow-2);
}
.nav-dropdown:hover>.dropdown-menu,
.dropdown-menu:hover,
.nav-dropdown.open>.dropdown-menu{
  opacity:1;visibility:visible;pointer-events:all;
  transform:translateX(-50%) translateY(0);
}
.dropdown-item{
  display:flex;align-items:center;gap:12px;
  padding:10px 12px;border-radius:var(--radius-sm);
  transition:background var(--motion-duration-fast);
}
.dropdown-item:hover{background:var(--color-bg-layout)}
.di-icon{
  width:36px;height:36px;border-radius:var(--radius-sm);
  display:flex;align-items:center;justify-content:center;
  font-size:.85rem;flex-shrink:0;
}
.di-body{display:flex;flex-direction:column;gap:2px}
.di-body strong{font-size:var(--font-size-sm);font-weight:600;color:var(--color-text)}
.di-body span{font-size:var(--font-size-xs);color:var(--color-text-tertiary)}

/* Hamburger */
.nav-hamburger{
  display:none;flex-direction:column;gap:5px;
  width:36px;height:36px;align-items:center;justify-content:center;
  border-radius:var(--radius-sm);
  transition:background var(--motion-duration-fast);
}
.nav-hamburger:hover{background:var(--color-bg-layout)}
.nav-hamburger span{
  display:block;width:18px;height:2px;
  background:var(--color-text-secondary);
  border-radius:1px;
  transition:transform var(--motion-duration-mid),opacity var(--motion-duration-mid);
}

/* Mobile menu */
.mobile-menu{
  display:none;overflow:hidden;max-height:0;
  background:var(--color-bg-elevated);border-top:1px solid var(--color-border-secondary);
  transition:max-height var(--motion-duration-slow) var(--motion-ease-out);
}
.mobile-menu.open{max-height:600px}
.mobile-menu ul{padding:var(--space-sm) var(--space-md) var(--space-md)}
.mobile-menu li a{
  display:block;padding:10px 12px;border-radius:var(--radius-sm);
  font-size:var(--font-size-sm);font-weight:500;color:var(--color-text-secondary);
  transition:background var(--motion-duration-fast),color var(--motion-duration-fast);
}
.mobile-menu li a:hover{background:var(--color-primary-bg);color:var(--color-primary)}
.mobile-menu li a.mobile-sub{padding-left:28px;font-size:var(--font-size-xs);color:var(--color-text-tertiary)}
.mobile-group-label{
  font-size:var(--font-size-xs);font-weight:600;
  color:var(--color-text-quaternary);
  letter-spacing:.06em;text-transform:uppercase;
  padding:10px 12px 4px;
}

/* ── 3. BUTTONS ── */
.btn-primary{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 20px;border-radius:var(--radius-sm);
  background:var(--color-primary);color:#fff;
  font-size:var(--font-size-sm);font-weight:600;
  box-shadow:0 2px 0 rgba(5,145,255,.1);
  transition:background var(--motion-duration-mid),box-shadow var(--motion-duration-mid);
}
.btn-primary:hover{background:var(--color-primary-hover);box-shadow:0 4px 12px rgba(22,119,255,.25)}
.btn-primary:active{background:var(--color-primary-active)}

.btn-primary-lg{
  padding:12px 32px;font-size:var(--font-size-base);border-radius:var(--radius-sm);
}

.btn-default{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 20px;border-radius:var(--radius-sm);
  background:var(--color-bg-elevated);color:var(--color-text);
  font-size:var(--font-size-sm);font-weight:500;
  border:1px solid var(--color-border);
  box-shadow:0 2px 0 rgba(0,0,0,.25);
  transition:color var(--motion-duration-mid),border-color var(--motion-duration-mid);
}
.btn-default:hover{color:var(--color-primary);border-color:var(--color-primary)}

.btn-default-lg{
  padding:12px 32px;font-size:var(--font-size-base);border-radius:var(--radius-sm);
}

.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 12px;border-radius:var(--radius-sm);
  font-size:var(--font-size-sm);font-weight:500;color:var(--color-primary);
  transition:background var(--motion-duration-fast);
}
.btn-text:hover{background:var(--color-primary-bg)}

/* ── 4. HERO ── */
#hero{
  padding-top:64px; /* navbar height */
  min-height:100vh;
  display:flex;align-items:center;
  background:var(--color-bg-base);
  overflow:hidden;
  position:relative;
}
.hero-bg-gradient{
  position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(ellipse 80% 60% at 60% 20%,rgba(22,104,220,.14) 0%,transparent 65%),
             radial-gradient(ellipse 50% 40% at 90% 80%,rgba(22,104,220,.08) 0%,transparent 60%);
}
.hero-inner{
  max-width:1200px;margin:0 auto;padding:var(--space-4xl) var(--space-lg);
  display:grid;grid-template-columns:1fr 1fr;gap:var(--space-4xl);
  align-items:center;position:relative;z-index:1;width:100%;
}
.hero-content{display:flex;flex-direction:column;gap:var(--space-lg)}

.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 22px;
  border-radius:50px;
  background:var(--color-primary-bg);
  border:1px solid var(--color-primary-border);
  font-size:var(--font-size-xs);font-weight:600;color:var(--color-primary);
  width:fit-content;
}
.hero-tag-dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--color-primary);animation:pulse 2s infinite;
}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}

.hero-title{
  font-size:clamp(2rem,4.5vw,3.2rem);
  font-weight:700;line-height:1.21;
  color:var(--color-text);
  letter-spacing:-.02em;
}
.hero-title .highlight{color:var(--color-primary)}

.hero-desc{
  font-size:var(--font-size-base);
  color:var(--color-text-secondary);
  line-height:1.75;max-width:480px;
}

.hero-actions{display:flex;align-items:center;gap:var(--space-sm);flex-wrap:wrap}

.hero-stats{
  display:flex;gap:var(--space-xl);padding-top:var(--space-lg);
  border-top:1px solid var(--color-border-secondary);margin-top:4px;
}
.hero-stat-num{font-size:var(--font-size-xl);font-weight:700;color:var(--color-text);line-height:1}
.hero-stat-label{font-size:var(--font-size-xs);color:var(--color-text-tertiary);margin-top:4px}

/* Download buttons */
.hero-download{display:flex;flex-direction:column;gap:var(--space-sm);margin-top:4px}
.dl-label{font-size:var(--font-size-xs);color:var(--color-text-tertiary);font-weight:500}
.dl-btns{display:flex;gap:var(--space-sm);flex-wrap:wrap}
.btn-store{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;border-radius:var(--radius-sm);
  border:1px solid var(--color-border);
  background:var(--color-bg-elevated);color:var(--color-text);
  font-size:var(--font-size-xs);
  box-shadow:var(--shadow-1);
  transition:border-color var(--motion-duration-mid),box-shadow var(--motion-duration-mid);
}
.btn-store:hover{border-color:var(--color-primary);box-shadow:var(--shadow-2)}
.btn-store i{font-size:1rem}
.store-text{display:flex;flex-direction:column;gap:1px}
.store-sub{font-size:10px;color:var(--color-text-tertiary)}
.store-name{font-size:var(--font-size-xs);font-weight:600;color:var(--color-text)}

/* Hero visual — Ant Design 스타일 대시보드 목업 */
.hero-visual{
  position:relative;display:flex;justify-content:center;align-items:center;
}
.dashboard-mockup{
  width:100%;max-width:500px;
  background:var(--color-bg-elevated);
  border:1px solid var(--color-border);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-3);
  overflow:hidden;
  animation:float 6s ease-in-out infinite;
}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
.dm-topbar{
  display:flex;align-items:center;gap:8px;
  padding:12px 16px;
  border-bottom:1px solid var(--color-border-secondary);
  background:var(--color-bg-layout);
}
.dm-dots{display:flex;gap:5px}
.dm-dot{width:10px;height:10px;border-radius:50%}
.dm-dot:nth-child(1){background:#ff5f57}
.dm-dot:nth-child(2){background:#febc2e}
.dm-dot:nth-child(3){background:#28c840}
.dm-title{font-size:var(--font-size-xs);font-weight:600;color:var(--color-text-tertiary);margin-left:auto;margin-right:auto}

.dm-body{padding:var(--space-md)}
.dm-section-title{
  font-size:var(--font-size-xs);font-weight:600;
  color:var(--color-text-tertiary);
  text-transform:uppercase;letter-spacing:.06em;
  margin-bottom:var(--space-sm);
}

/* Ant Design style stats row */
.dm-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-sm);margin-bottom:var(--space-md)}
.dm-stat-card{
  background:var(--color-bg-layout);
  border:1px solid var(--color-border-secondary);
  border-radius:var(--radius-sm);padding:12px;
}
.dm-stat-label{font-size:10px;color:var(--color-text-tertiary);margin-bottom:4px}
.dm-stat-val{font-size:var(--font-size-base);font-weight:700;color:var(--color-text)}
.dm-stat-val.primary{color:var(--color-primary)}
.dm-stat-val.success{color:var(--color-success)}
.dm-stat-val.warning{color:var(--color-warning)}

/* Ant Design style list */
.dm-list{display:flex;flex-direction:column;gap:6px;margin-bottom:var(--space-md)}
.dm-list-item{
  display:flex;align-items:center;gap:10px;
  padding:10px 12px;
  border:1px solid var(--color-border-secondary);
  border-radius:var(--radius-sm);
  background:var(--color-bg-base);
  font-size:var(--font-size-xs);
  transition:border-color var(--motion-duration-fast);
}
.dm-list-item:hover{border-color:var(--color-primary-border)}
.dm-badge{
  display:inline-flex;align-items:center;
  padding:1px 6px;border-radius:var(--radius-xs);
  font-size:10px;font-weight:600;
  margin-left:auto;flex-shrink:0;
}
.dm-badge.done{background:rgba(73,170,25,.15);color:#73d13d;border:1px solid rgba(73,170,25,.35)}
.dm-badge.pend{background:rgba(216,150,20,.15);color:#ffc53d;border:1px solid rgba(216,150,20,.35)}
.dm-badge.alert{background:rgba(220,68,70,.15);color:#ff7875;border:1px solid rgba(220,68,70,.35)}
.dm-item-icon{
  width:28px;height:28px;border-radius:var(--radius-xs);
  display:flex;align-items:center;justify-content:center;
  font-size:.75rem;flex-shrink:0;
}
.dm-progress{
  display:flex;align-items:center;gap:var(--space-sm);
  padding:var(--space-sm) 0;
  border-top:1px solid var(--color-border-secondary);
}
.dm-progress-label{font-size:var(--font-size-xs);color:var(--color-text-secondary);white-space:nowrap}
.dm-progress-bar{flex:1;height:6px;background:var(--color-border-secondary);border-radius:3px;overflow:hidden}
.dm-progress-fill{height:100%;border-radius:3px;background:var(--color-primary)}
.dm-progress-pct{font-size:var(--font-size-xs);font-weight:600;color:var(--color-primary);white-space:nowrap}

/* ── 5. SECTION 공통 ── */
.section{padding:var(--space-4xl) 0}
.section-gray{background:var(--color-bg-layout)}
.section-white{background:var(--color-bg-base)}
.section-dark{background:#001529}  /* Ant Design dark nav color */

.section-eyebrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:var(--font-size-xs);font-weight:600;color:var(--color-primary);
  letter-spacing:.06em;text-transform:uppercase;
  margin-bottom:var(--space-sm);
}
.section-heading{
  font-size:clamp(1.5rem,3vw,2.2rem);
  font-weight:700;line-height:1.3;
  color:var(--color-text);
  letter-spacing:-.01em;
  margin-bottom:var(--space-md);
}
.section-dark .section-heading{color:#fff}
.section-sub{
  font-size:var(--font-size-base);
  color:var(--color-text-secondary);
  line-height:1.75;
  max-width:560px;
  margin-bottom:var(--space-3xl);
}
.section-dark .section-sub{color:rgba(255,255,255,.55)}
.section-header-center{text-align:center}
.section-header-center .section-sub{margin-left:auto;margin-right:auto}

/* ── 6. FEATURES ── */
.features-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-md);
}
.feat-card{
  padding:var(--space-lg);
  border:1px solid var(--color-border-secondary);
  border-radius:var(--radius-md);
  background:var(--color-bg-elevated);
  transition:border-color var(--motion-duration-slow),box-shadow var(--motion-duration-slow),transform var(--motion-duration-slow);
}
.feat-card:hover{
  border-color:var(--color-primary-border);
  box-shadow:var(--shadow-2);
  transform:translateY(-2px);
}
.feat-card.highlight{
  border-color:var(--color-primary-border);
  background:var(--color-primary-bg);
}
.feat-icon-wrap{
  width:44px;height:44px;border-radius:var(--radius-sm);
  display:flex;align-items:center;justify-content:center;
  font-size:1.1rem;margin-bottom:var(--space-md);
}
.feat-icon-wrap.blue{background:rgba(22,104,220,.15);color:#4096ff}
.feat-icon-wrap.cyan{background:rgba(19,194,194,.15);color:#36cfc9}
.feat-icon-wrap.green{background:rgba(73,170,25,.15);color:#73d13d}
.feat-icon-wrap.gold{background:rgba(216,150,20,.15);color:#faad14}
.feat-icon-wrap.purple{background:rgba(114,46,209,.15);color:#b37feb}
.feat-icon-wrap.red{background:rgba(245,34,45,.15);color:#ff7875}
.feat-card h3{
  font-size:var(--font-size-base);font-weight:600;
  color:var(--color-text);margin-bottom:var(--space-sm);
}
.feat-card p{
  font-size:var(--font-size-sm);color:var(--color-text-secondary);line-height:1.7;
  margin-bottom:var(--space-md);
}
.feat-tags{display:flex;flex-wrap:wrap;gap:6px}
.feat-tag{
  font-size:var(--font-size-xs);
  padding:2px 8px;border-radius:var(--radius-xs);
  background:var(--color-bg-layout);
  color:var(--color-text-tertiary);
  border:1px solid var(--color-border-secondary);
}
.feat-card.highlight .feat-tag{background:rgba(22,104,220,.12);color:var(--color-primary);border-color:var(--color-primary-border)}

/* ── 7. FLOW / HOW IT WORKS ── */
.flow-steps{
  display:grid;grid-template-columns:1fr auto 1fr auto 1fr auto 1fr;
  align-items:start;gap:0;margin-bottom:var(--space-3xl);
}
.flow-step{
  padding:var(--space-lg);
  border:1px solid var(--color-border);
  border-radius:var(--radius-md);
  background:var(--color-bg-elevated);
}
.flow-step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:28px;height:28px;border-radius:50%;
  background:var(--color-primary);color:#fff;
  font-size:var(--font-size-xs);font-weight:700;
  margin-bottom:var(--space-sm);
}
.flow-step h3{
  font-size:var(--font-size-sm);font-weight:600;
  color:var(--color-text);margin-bottom:6px;
}
.flow-step p{
  font-size:var(--font-size-xs);color:var(--color-text-secondary);line-height:1.7;
}
.flow-arrow{
  display:flex;align-items:center;justify-content:center;
  padding:0 var(--space-sm);padding-top:44px;
  color:var(--color-primary);font-size:.85rem;
}

/* ── 8. USE CASE TABS ── */
.uc-tabs-wrap{
  display:flex;gap:var(--space-md);align-items:flex-start;
  border:1px solid var(--color-border-secondary);
  border-radius:var(--radius-md);overflow:hidden;
  background:var(--color-bg-elevated);
}
.uc-tab-nav{
  width:200px;flex-shrink:0;
  border-right:1px solid var(--color-border-secondary);
  padding:var(--space-sm) 0;
}
.uc-tab-btn{
  display:flex;align-items:center;gap:10px;
  width:100%;padding:12px 16px;
  font-size:var(--font-size-sm);font-weight:500;
  color:var(--color-text-secondary);
  border-left:3px solid transparent;
  transition:background var(--motion-duration-fast),color var(--motion-duration-fast);
  text-align:left;
}
.uc-tab-btn:hover{background:var(--color-bg-layout);color:var(--color-text)}
.uc-tab-btn.active{
  background:var(--color-primary-bg);
  color:var(--color-primary);font-weight:600;
  border-left-color:var(--color-primary);
}
.uc-tab-btn i{font-size:.85rem;width:16px;text-align:center}
.uc-tab-panels{flex:1;padding:var(--space-xl)}
.uc-tab-panel{display:none}
.uc-tab-panel.active{display:block}
.uc-panel-title{
  font-size:var(--font-size-lg);font-weight:700;
  color:var(--color-text);margin-bottom:var(--space-sm);
}
.uc-panel-desc{
  font-size:var(--font-size-sm);color:var(--color-text-secondary);
  line-height:1.75;margin-bottom:var(--space-lg);
}
.uc-steps{display:flex;flex-direction:column;gap:var(--space-sm)}
.uc-step{
  display:flex;gap:var(--space-md);align-items:flex-start;
  padding:var(--space-md);
  border:1px solid var(--color-border-secondary);
  border-radius:var(--radius-sm);
  background:var(--color-bg-layout);
}
.uc-step-num{
  width:24px;height:24px;border-radius:50%;
  background:var(--color-primary);color:#fff;
  font-size:var(--font-size-xs);font-weight:700;
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.uc-step h4{font-size:var(--font-size-sm);font-weight:600;color:var(--color-text);margin-bottom:4px}
.uc-step p{font-size:var(--font-size-xs);color:var(--color-text-secondary);line-height:1.65}
.uc-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:var(--space-lg)}
.uc-tag{
  font-size:var(--font-size-xs);
  padding:3px 10px;border-radius:50px;
  background:var(--color-primary-bg);
  color:var(--color-primary);
  border:1px solid var(--color-primary-border);
  font-weight:500;
}

/* ── 9. REPORTS / TEMPLATES ── */
.report-tabs{display:flex;gap:var(--space-xs);flex-wrap:wrap;margin-bottom:var(--space-lg)}
.rtab{
  padding:6px 16px;border-radius:50px;
  border:1px solid var(--color-border);
  background:var(--color-bg-elevated);font-size:var(--font-size-sm);font-weight:500;
  color:var(--color-text-secondary);
  transition:all var(--motion-duration-mid);
}
.rtab:hover{border-color:var(--color-primary);color:var(--color-primary)}
.rtab.active{background:var(--color-primary);color:#fff;border-color:var(--color-primary);box-shadow:0 2px 0 rgba(5,145,255,.1)}

.report-panels{margin-bottom:var(--space-3xl)}
.report-panel{display:none}
.report-panel.active{display:block}
.report-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:8px}
.report-item{
  display:flex;align-items:center;gap:10px;
  background:var(--color-bg-elevated);border:1px solid var(--color-border-secondary);
  border-radius:var(--radius-sm);padding:10px 14px;
  font-size:var(--font-size-sm);font-weight:500;color:var(--color-text-secondary);
  transition:all var(--motion-duration-mid);
}
.report-item:hover{border-color:var(--color-primary);background:var(--color-primary-bg);color:var(--color-primary)}
.report-item i{color:var(--color-primary);font-size:.85rem;flex-shrink:0}

.pack-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--space-md)}
.pack-card{
  display:flex;gap:var(--space-md);align-items:flex-start;
  background:var(--color-bg-elevated);border:1px solid var(--color-border);
  border-radius:var(--radius-md);padding:var(--space-lg);
  transition:border-color var(--motion-duration-slow),box-shadow var(--motion-duration-slow);
}
.pack-card:hover{border-color:var(--color-primary-border);box-shadow:var(--shadow-2)}
.pack-icon{
  width:44px;height:44px;border-radius:var(--radius-sm);
  display:flex;align-items:center;justify-content:center;font-size:1.1rem;flex-shrink:0;
}
.pack-body h4{font-size:var(--font-size-sm);font-weight:600;color:var(--color-text);margin-bottom:6px}
.pack-body p{font-size:var(--font-size-sm);color:var(--color-text-secondary);line-height:1.65;margin-bottom:10px}
.pack-body ul{display:flex;flex-direction:column;gap:4px}
.pack-body li{display:flex;align-items:center;gap:8px;font-size:var(--font-size-xs);color:var(--color-text-secondary)}
.pack-body li i{color:var(--color-success);font-size:.75rem}

/* ── 10. ARCHITECTURE DIAGRAM ── */
.arch-diagram{
  border:1px solid var(--color-border);
  border-radius:var(--radius-md);
  overflow:hidden;
  margin-top:var(--space-3xl);
}
.arch-layer{
  display:grid;grid-template-columns:120px 1fr;
  align-items:center;
  padding:var(--space-md) var(--space-lg);
  gap:var(--space-lg);
}
.arch-layer.layer-ui{background:var(--color-bg-elevated)}
.arch-layer.layer-ai{background:var(--color-primary-bg)}
.arch-layer.layer-sys{background:var(--color-bg-layout)}
.arch-layer-label{
  font-size:var(--font-size-xs);font-weight:600;
  color:var(--color-text-tertiary);
  text-transform:uppercase;letter-spacing:.06em;
}
.arch-items{display:flex;flex-wrap:wrap;gap:8px}
.arch-item{
  display:flex;align-items:center;gap:6px;
  padding:6px 12px;border-radius:var(--radius-xs);
  border:1px solid var(--color-border);
  background:var(--color-bg-base);font-size:var(--font-size-xs);
  color:var(--color-text-secondary);
}
.arch-item i{font-size:.75rem;color:var(--color-text-tertiary)}
.arch-item.primary{
  background:var(--color-primary);color:#fff;border-color:var(--color-primary);
}
.arch-item.primary i{color:rgba(255,255,255,.8)}
.arch-divider{
  border-top:1px dashed var(--color-border);
  display:flex;align-items:center;justify-content:center;
  padding:4px 0;color:var(--color-primary);font-size:.7rem;
}

/* ── 11. CTA BANNER ── */
.cta-section{
  background:var(--color-primary);
  padding:var(--space-4xl) 0;
  text-align:center;
}
.cta-section h2{
  font-size:clamp(1.5rem,3vw,2.2rem);
  font-weight:700;color:#fff;
  margin-bottom:var(--space-md);line-height:1.3;
}
.cta-section p{
  font-size:var(--font-size-base);
  color:rgba(255,255,255,.8);
  margin-bottom:var(--space-xl);line-height:1.75;
}
.cta-section .btn-white{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 28px;border-radius:var(--radius-sm);
  background:#fff;color:var(--color-primary);
  font-size:var(--font-size-sm);font-weight:600;
  box-shadow:0 2px 0 rgba(0,0,0,.2);
  transition:box-shadow var(--motion-duration-mid);
}
.cta-section .btn-white:hover{box-shadow:var(--shadow-2)}
.cta-section .btn-ghost-white{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 28px;border-radius:var(--radius-sm);
  border:1px solid rgba(255,255,255,.4);color:#fff;
  font-size:var(--font-size-sm);font-weight:500;
  transition:background var(--motion-duration-mid),border-color var(--motion-duration-mid);
}
.cta-section .btn-ghost-white:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.7)}
.cta-btns{display:flex;align-items:center;justify-content:center;gap:var(--space-sm);flex-wrap:wrap}

/* ── 12. FOOTER ── */
#footer{
  background:#001529;
  padding:var(--space-3xl) 0 var(--space-xl);
  border-top:1px solid rgba(255,255,255,.08);
}
.footer-top{
  display:grid;grid-template-columns:2fr 1fr 1fr 1fr;
  gap:var(--space-xl);margin-bottom:var(--space-xl);
}
.footer-brand p{
  font-size:var(--font-size-xs);color:rgba(255,255,255,.4);
  line-height:1.8;margin-top:var(--space-sm);margin-bottom:var(--space-md);
}
.footer-logo .logo-text{color:#fff}
.footer-logo .logo-em{color:#4096ff}
.footer-website-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:var(--font-size-xs);color:rgba(255,255,255,.45);
  border:1px solid rgba(255,255,255,.12);
  padding:5px 12px;border-radius:var(--radius-xs);
  transition:color var(--motion-duration-mid),border-color var(--motion-duration-mid);
}
.footer-website-link:hover{color:#4096ff;border-color:rgba(64,150,255,.4)}
.footer-links-group h5{
  font-size:var(--font-size-xs);font-weight:600;
  color:rgba(255,255,255,.65);
  text-transform:uppercase;letter-spacing:.06em;
  margin-bottom:var(--space-md);
}
.footer-links-group ul{display:flex;flex-direction:column;gap:10px}
.footer-links-group a{
  font-size:var(--font-size-xs);color:rgba(255,255,255,.4);
  transition:color var(--motion-duration-fast);
}
.footer-links-group a:hover{color:rgba(255,255,255,.85)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.06);
  padding-top:var(--space-lg);
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:var(--space-sm);
}
.footer-bottom p{font-size:var(--font-size-xs);color:rgba(255,255,255,.3)}

/* ── 13. CONTACT PAGE ── */

/* Page Hero — Ant Design 스타일 흰 배경 헤더 */
.contact-page-hero{
  padding-top:64px;
  background:var(--color-bg-base);
  border-bottom:1px solid var(--color-border-secondary);
}
.contact-page-hero-inner{
  padding-top:var(--space-2xl);
  padding-bottom:var(--space-2xl);
}
.ant-breadcrumb{
  display:flex;align-items:center;gap:8px;
  font-size:var(--font-size-xs);color:var(--color-text-tertiary);margin-bottom:var(--space-md);
  list-style:none;
}
.ant-breadcrumb a{color:var(--color-text-tertiary);transition:color var(--motion-duration-fast)}
.ant-breadcrumb a:hover{color:var(--color-primary)}
.ant-breadcrumb i{font-size:10px}
.contact-page-hero-inner h1{
  font-size:clamp(1.6rem,3vw,2.2rem);font-weight:700;
  color:var(--color-text);line-height:1.3;margin-bottom:var(--space-sm);
}
.contact-page-hero-inner p{
  font-size:var(--font-size-base);color:var(--color-text-secondary);line-height:1.75;
}

/* Section backgrounds */
.section-gray{
  padding:var(--space-3xl) 0;
  background:var(--color-bg-layout);
}
.section-white{
  padding:var(--space-3xl) 0;
  background:var(--color-bg-base);
}

/* Layout */
.contact-layout{
  display:grid;grid-template-columns:1fr 1fr;gap:var(--space-3xl);align-items:start;
}

/* Left aside */
.contact-info-card{
  background:var(--color-bg-elevated);
  border:1px solid var(--color-border-secondary);
  border-radius:var(--radius-lg);
  padding:var(--space-xl);
  margin-bottom:var(--space-md);
  box-shadow:var(--shadow-1);
}
.contact-info-card h2{
  font-size:clamp(1.3rem,2.5vw,1.65rem);font-weight:700;
  color:var(--color-text);line-height:1.4;margin-bottom:var(--space-sm);
}
.contact-info-desc{
  font-size:var(--font-size-sm);color:var(--color-text-secondary);
  line-height:1.75;margin-bottom:var(--space-lg);
}
.contact-points{display:flex;flex-direction:column;gap:var(--space-sm)}
.contact-point{
  display:flex;align-items:flex-start;gap:var(--space-md);
  padding:var(--space-sm) var(--space-md);
  border:1px solid var(--color-border-secondary);
  border-radius:var(--radius-md);
  background:var(--color-bg-layout);
  transition:border-color var(--motion-duration-mid),box-shadow var(--motion-duration-mid);
}
.contact-point:hover{border-color:var(--color-primary-border);box-shadow:var(--shadow-1);background:var(--color-bg-elevated)}
.cp-icon{
  width:36px;height:36px;border-radius:var(--radius-sm);flex-shrink:0;
  background:var(--color-primary-bg);
  border:1px solid var(--color-primary-border);
  display:flex;align-items:center;justify-content:center;
  font-size:.85rem;color:var(--color-primary);
}
.cp-body h4{font-size:var(--font-size-sm);font-weight:600;color:var(--color-text);margin-bottom:3px}
.cp-body p{font-size:var(--font-size-xs);color:var(--color-text-secondary);line-height:1.65}

/* Use Case 링크 블록 */
.contact-uc-links{
  background:var(--color-bg-elevated);
  border:1px solid var(--color-border-secondary);
  border-radius:var(--radius-lg);
  padding:var(--space-lg);
  box-shadow:var(--shadow-1);
}
.contact-uc-label{
  font-size:var(--font-size-xs);font-weight:600;
  color:var(--color-text-tertiary);
  text-transform:uppercase;letter-spacing:.06em;
  margin-bottom:var(--space-sm);
}
.contact-uc-item{
  display:flex;align-items:center;gap:10px;
  padding:10px 14px;border-radius:var(--radius-sm);
  font-size:var(--font-size-sm);font-weight:500;
  border:1px solid transparent;
  margin-bottom:6px;
  transition:background var(--motion-duration-mid),border-color var(--motion-duration-mid);
  color:var(--color-text-secondary);
}
.contact-uc-item:last-child{margin-bottom:0}
.contact-uc-item .contact-uc-arrow{margin-left:auto;font-size:10px;opacity:0;transition:opacity .2s,transform .2s}
.contact-uc-item:hover .contact-uc-arrow{opacity:1;transform:translateX(3px)}
.contact-uc-safety{background:rgba(245,158,11,.1);border-color:rgba(245,158,11,.25);color:#fbbf24}
.contact-uc-safety i:first-child{color:#f59e0b}
.contact-uc-safety:hover{background:rgba(245,158,11,.18);border-color:rgba(245,158,11,.4)}
.contact-uc-fire{background:rgba(239,68,68,.1);border-color:rgba(239,68,68,.25);color:#f87171}
.contact-uc-fire i:first-child{color:#ef4444}
.contact-uc-fire:hover{background:rgba(239,68,68,.18);border-color:rgba(239,68,68,.4)}
.contact-uc-env{background:rgba(34,197,94,.1);border-color:rgba(34,197,94,.25);color:#4ade80}
.contact-uc-env i:first-child{color:#22c55e}
.contact-uc-env:hover{background:rgba(34,197,94,.18);border-color:rgba(34,197,94,.4)}

/* Form box (right column) */
.contact-form-box{
  background:var(--color-bg-elevated);
  border:1px solid var(--color-border);
  border-radius:var(--radius-lg);
  padding:var(--space-xl);
  box-shadow:var(--shadow-2);
}
.contact-form-header{
  display:flex;align-items:center;gap:10px;
  margin-bottom:var(--space-lg);
  padding-bottom:var(--space-md);
  border-bottom:1px solid var(--color-border-secondary);
}
.contact-form-header i{
  font-size:1.1rem;color:var(--color-primary);
}
.contact-form-header h3{
  font-size:var(--font-size-lg);font-weight:700;
  color:var(--color-text);
}

/* Ant Design Form */
.ant-form{display:flex;flex-direction:column;gap:0}
.ant-form-row{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-md)}
.ant-form-item{display:flex;flex-direction:column;gap:6px;margin-bottom:var(--space-md)}
.ant-form-item-full{grid-column:1/-1}
.ant-label{font-size:var(--font-size-sm);font-weight:500;color:var(--color-text)}
.ant-required{color:var(--color-error)}
.ant-input,
.ant-select,
.ant-textarea{
  padding:8px 12px;
  border:1px solid var(--color-border);
  border-radius:var(--radius-sm);
  font-size:var(--font-size-sm);font-family:inherit;
  color:var(--color-text);background:var(--color-bg-base);
  transition:border-color var(--motion-duration-mid),box-shadow var(--motion-duration-mid);
  outline:none;width:100%;box-sizing:border-box;
}
.ant-input:hover,.ant-select:hover,.ant-textarea:hover{border-color:var(--color-primary-hover)}
.ant-input:focus,.ant-select:focus,.ant-textarea:focus{
  border-color:var(--color-primary);
  box-shadow:0 0 0 2px rgba(22,104,220,.25);
}
.ant-input::placeholder,.ant-textarea::placeholder{color:var(--color-text-quaternary)}
.ant-textarea{resize:vertical;min-height:100px}
.ant-form-checkbox{flex-direction:row !important;align-items:flex-start;gap:10px}
.ant-checkbox{width:16px;height:16px;margin-top:2px;flex-shrink:0;accent-color:var(--color-primary)}
.ant-checkbox-label{font-size:var(--font-size-xs);color:var(--color-text-secondary);cursor:pointer;line-height:1.65}
.btn-block{width:100%;justify-content:center;padding:11px;font-size:var(--font-size-sm);margin-top:var(--space-sm)}
.form-privacy-note{
  margin-top:var(--space-md);
  font-size:var(--font-size-xs);
  color:var(--color-text-tertiary);
  text-align:center;
}
.form-privacy-note i{margin-right:5px}

/* 도입 프로세스 */
.process-steps{
  display:flex;align-items:flex-start;gap:0;
  margin-top:var(--space-2xl);
}
.process-step{
  flex:1;
  background:var(--color-bg-elevated);
  border:1px solid var(--color-border-secondary);
  border-radius:var(--radius-lg);
  padding:var(--space-xl) var(--space-lg);
  text-align:center;
  box-shadow:var(--shadow-1);
  transition:box-shadow var(--motion-duration-mid),border-color var(--motion-duration-mid);
  position:relative;
}
.process-step:hover{box-shadow:var(--shadow-2);border-color:var(--color-primary-border)}
.process-step-num{
  display:inline-block;
  font-size:var(--font-size-xs);font-weight:700;letter-spacing:.05em;
  color:var(--color-primary);background:var(--color-primary-bg);
  border:1px solid var(--color-primary-border);
  border-radius:var(--radius-sm);
  padding:2px 8px;margin-bottom:var(--space-sm);
}
.process-step-icon{
  width:48px;height:48px;
  background:var(--color-primary-bg);
  border:1px solid var(--color-primary-border);
  border-radius:var(--radius-md);
  display:flex;align-items:center;justify-content:center;
  font-size:1.2rem;color:var(--color-primary);
  margin:0 auto var(--space-md);
}
.process-step h4{font-size:var(--font-size-sm);font-weight:600;color:var(--color-text);margin-bottom:var(--space-xs)}
.process-step p{font-size:var(--font-size-xs);color:var(--color-text-secondary);line-height:1.7}
.process-step-arrow{
  display:flex;align-items:center;justify-content:center;
  padding:0 var(--space-xs);
  color:var(--color-border);
  font-size:.85rem;
  flex-shrink:0;
  margin-top:var(--space-3xl);
}

/* Toast */
.toast{
  position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(20px);
  background:var(--color-bg-elevated);color:var(--color-text);
  border:1px solid var(--color-border);
  border-radius:var(--radius-sm);padding:10px 20px;
  box-shadow:var(--shadow-2);
  font-size:var(--font-size-sm);
  opacity:0;pointer-events:none;
  transition:all var(--motion-duration-slow) var(--motion-ease-out);z-index:9999;
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ── 14. REVEAL ANIMATION ── */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s var(--motion-ease-out),transform .5s var(--motion-ease-out)}
.reveal.visible{opacity:1;transform:translateY(0)}

/* ── 15. SCROLL HINT ── */
.scroll-hint{
  position:absolute;bottom:32px;left:50%;transform:translateX(-50%);
  width:32px;height:32px;border-radius:50%;
  border:1px solid var(--color-border);background:var(--color-bg-elevated);
  display:flex;align-items:center;justify-content:center;
  color:var(--color-text-tertiary);font-size:.7rem;
  animation:bounce 2s infinite;
  box-shadow:var(--shadow-1);
}
@keyframes bounce{0%,100%{transform:translateX(-50%) translateY(0)}50%{transform:translateX(-50%) translateY(6px)}}

/* ── 16. PAGE HERO (legacy fallback) ── */
/* contact-page-hero 가 주 클래스. 구버전 page-hero 제거됨. */

/* ── 17. DIVIDER ── */
.ant-divider{border-top:1px solid var(--color-border-secondary);margin:var(--space-xl) 0}

/* ── 18. RESPONSIVE ── */
@media(max-width:1024px){
  .features-grid{grid-template-columns:repeat(2,1fr)}
  .uc-tabs-wrap{flex-direction:column}
  .uc-tab-nav{width:100%;border-right:none;border-bottom:1px solid var(--color-border-secondary);display:flex;flex-wrap:wrap}
  .uc-tab-btn{width:auto;border-left:none;border-bottom:3px solid transparent}
  .uc-tab-btn.active{border-left:none;border-bottom-color:var(--color-primary)}
}
@media(max-width:900px){
  .hero-inner{grid-template-columns:1fr;gap:var(--space-xl)}
  .dashboard-mockup{max-width:380px;margin:0 auto}
  .flow-steps{grid-template-columns:1fr;gap:var(--space-sm)}
  .flow-arrow{padding:4px 0;transform:rotate(90deg)}
  .footer-top{grid-template-columns:1fr 1fr}
  .contact-layout{grid-template-columns:1fr}
  .ant-form-row{grid-template-columns:1fr}
  .process-steps{flex-direction:column}
  .process-step-arrow{transform:rotate(90deg);margin:0 auto}
  .pack-grid{grid-template-columns:1fr}
}
@media(max-width:640px){
  .nav-links{display:none}
  .nav-hamburger{display:flex}
  .mobile-menu{display:block}
  .hero-inner{padding:var(--space-3xl) var(--space-md)}
  .features-grid{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr}
  .hero-stats{gap:var(--space-lg)}
  .report-grid{grid-template-columns:1fr}
}