/* =========================================================
   필로스 PHILOS — 브랜드 허브
   Visual concept: Clean Neutral / Bold Sans Editorial (필로스 공식 브랜드 톤 — 아이보리·탄·잉크 무채색 계열)
   Primary layout: Asymmetric Split (Hero) + Banded Editorial Rows (Services)
   Secondary layout: FullBleed (Ink section)
   Type: SUITE Variable 단일 서체 — 굵기 대비로 위계 표현
   Motion: Clip reveal + staggered line reveal (scroll-triggered, IntersectionObserver)
   ========================================================= */

:root{
  /* --- color: 필로스 공식 브랜드 자산(브랜드 소개 페이지) 팔레트 기반 — 무채색 잉크 + 웜 아이보리/탄.
     비비드 컬러 액센트 없음(원색 톤 배제, 흑백+웜뉴트럴로만 대비). --- */
  --ink:        #111111;   /* 잉크 블랙 — 헤드라인/CTA */
  --ink-soft:   #63594E;   /* 웜 그레이 — 본문 보조 텍스트 */
  --paper:      #FAFAFA;   /* 도미넌트 배경 */
  --paper-alt:  #F1EAE1;   /* 밴드 섹션 배경(웜 아이보리) */
  --card:       #FFFFFF;
  --tan:        #E7DCC9;   /* 카드 미디어 플레이스홀더 톤 */
  --tan-deep:   #BFA990;   /* 하이라이트 보더/호버 */
  --line:       #E2D9CB;   /* 헤어라인 보더 */
  --line-dark:  rgba(250,250,250,.18);

  --accent:     #111111;   /* 액센트 = 잉크(무채색) — CTA/강조 */
  --accent-dark:#000000;

  --text-on-light: #111111;
  --text-on-dark:  #FAFAFA;

  --font-sans: 'SUITE Variable', -apple-system, BlinkMacSystemFont, 'Malgun Gothic', sans-serif;

  --container: 1200px;
  --radius-sm: 2px;
  --ease: cubic-bezier(.16,.84,.36,1);
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family:var(--font-sans);
  font-weight:400;
  background:var(--paper);
  color:var(--text-on-light);
  line-height:1.7;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
body, p, h1, h2, h3, h4, h5, h6, li, td, th, a, span, div, button{
  word-break: keep-all;
  overflow-wrap: break-word;
}
img{ max-width:100%; height:auto; display:block; }
a{ color:inherit; text-decoration:none; }
button{ font-family:inherit; }
ul{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4,p{ margin:0; }
table{ border-collapse:collapse; width:100%; }

.skip-link{
  position:absolute; left:-999px; top:0; background:var(--ink); color:var(--text-on-dark);
  padding:12px 18px; z-index:200;
}
.skip-link:focus{ left:12px; top:12px; }

.container{ max-width:var(--container); margin:0 auto; padding:0 32px; }
.eyebrow{
  font-family:var(--font-sans); font-weight:700; font-size:13px; letter-spacing:.06em;
  color:var(--ink); border-bottom:2px solid var(--ink); display:inline-block;
  padding-bottom:4px; margin-bottom:18px; text-transform:uppercase;
}
.section-head{ max-width:640px; margin-bottom:48px; }
.section-head h2{
  font-weight:800; letter-spacing:-.01em; font-size:clamp(30px,3.8vw,46px); line-height:1.24; color:var(--ink);
}
.section-head p{ margin-top:14px; color:var(--ink-soft); font-size:16px; }

.btn{
  display:inline-flex; align-items:center; gap:8px; padding:15px 28px; border-radius:var(--radius-sm);
  font-weight:700; font-size:15px; border:1px solid transparent; transition:transform .25s var(--ease), background .25s var(--ease), opacity .25s var(--ease);
}
.btn--accent{ background:var(--accent); color:#fff; }
.btn--accent:hover{ background:var(--accent-dark); }
.btn--ghost{ background:transparent; border-color:var(--line); color:var(--ink); }
.btn--ghost:hover{ border-color:var(--ink); }
.btn--ghost-dark{ background:transparent; border-color:var(--line-dark); color:var(--text-on-dark); }
.btn--ghost-dark:hover{ border-color:var(--text-on-dark); }

/* ---------------- Header ---------------- */
.site-header{
  position:sticky; top:0; z-index:100; background:rgba(250,250,250,.92); backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.site-header__inner{
  max-width:var(--container); margin:0 auto; padding:18px 32px;
  display:flex; align-items:center; justify-content:space-between; gap:24px;
}
.wordmark{ display:flex; align-items:baseline; gap:8px; flex-shrink:0; }
.wordmark__ko{ font-weight:800; letter-spacing:-.01em; font-size:22px; color:var(--ink); }
.wordmark__en{ font-family:var(--font-sans); font-size:11px; letter-spacing:.16em; color:var(--tan-deep); font-weight:700; }
.main-nav{ display:flex; gap:32px; font-size:15px; font-weight:600; }
.main-nav a{ position:relative; padding-bottom:4px; }
.main-nav a::after{
  content:''; position:absolute; left:0; bottom:0; width:0; height:1px; background:var(--ink);
  transition:width .3s var(--ease);
}
.main-nav a:hover::after{ width:100%; }
.nav-cta{ padding:10px 20px; font-size:14px; }
.nav-toggle{ display:none; background:none; border:0; width:32px; height:22px; position:relative; cursor:pointer; }
.nav-toggle span{ position:absolute; left:0; right:0; height:2px; background:var(--ink); transition:.25s; }
.nav-toggle span:nth-child(1){ top:0; }
.nav-toggle span:nth-child(2){ top:10px; }
.nav-toggle span:nth-child(3){ top:20px; }
.mobile-nav{ display:none; flex-direction:column; gap:2px; padding:0 32px 18px; }
.mobile-nav a{ padding:12px 0; border-bottom:1px solid var(--line); font-size:15px; font-weight:600; }
.mobile-nav .btn{ margin-top:14px; justify-content:center; }

/* ---------------- Hero: Asymmetric Split ---------------- */
.hero{
  display:grid; grid-template-columns:minmax(0,560px) 1fr; align-items:stretch; min-height:640px;
}
.hero__text{
  display:flex; flex-direction:column; justify-content:center; padding:64px 48px 64px 32px; gap:24px;
  max-width:560px;
}
.hero__text .eyebrow{ margin-bottom:0; }
.hero h1{
  font-weight:800; letter-spacing:-.02em; font-size:clamp(40px,5.6vw,64px); line-height:1.14; color:var(--ink);
}
.hero__sub{ font-size:17px; color:var(--ink-soft); max-width:460px; }
.hero__facts{ display:flex; gap:28px; flex-wrap:wrap; padding-top:8px; border-top:1px solid var(--line); }
.hero__facts div{ font-size:13px; color:var(--ink-soft); }
.hero__facts strong{ display:block; font-weight:800; font-size:22px; color:var(--ink); margin-bottom:2px; }
.hero__cta{ display:flex; gap:14px; flex-wrap:wrap; }

.hero__media{ position:relative; overflow:hidden; background:var(--ink); }
.hero__media img{
  position:absolute; inset:0; width:100%; height:100%; object-fit:cover; opacity:0; transition:opacity 1.4s ease;
}
.hero__media img.is-active{ opacity:1; }
.hero__media::after{
  content:''; position:absolute; left:0; right:0; bottom:0; height:140px;
  background:linear-gradient(to top, rgba(17,17,17,.55), transparent); pointer-events:none;
}
.hero__media-caption{
  position:absolute; left:24px; bottom:20px; color:var(--text-on-dark); font-size:13px; z-index:2;
  display:flex; gap:8px; align-items:center;
}
.hero__dots{ display:flex; gap:6px; }
.hero__dots span{ width:6px; height:6px; border-radius:50%; background:rgba(250,250,250,.4); }
.hero__dots span.is-active{ background:var(--text-on-dark); }

/* ---------------- Services: banded editorial rows ---------------- */
.services{ padding:96px 0 40px; }
.category-row{
  display:grid; grid-template-columns:280px 1fr; gap:40px; padding:48px 0; border-top:1px solid var(--line);
}
.category-row:last-child{ border-bottom:1px solid var(--line); }
.category-row__head h3{ font-weight:800; letter-spacing:-.01em; font-size:26px; color:var(--ink); }
.category-row__head .cat-en{ display:block; font-size:12px; letter-spacing:.12em; color:var(--tan-deep); font-weight:700; margin-bottom:10px; text-transform:uppercase; }
.category-row__head p{ font-size:14px; color:var(--ink-soft); margin-top:10px; }

.sr-only{ position:absolute; width:1px; height:1px; overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; }

.table-scroll{ overflow-x:auto; margin-bottom:56px; border:1px solid var(--line); }
.services-table{ min-width:640px; }
.services-table th, .services-table td{ text-align:left; padding:14px 20px; font-size:14px; border-bottom:1px solid var(--line); }
.services-table thead th{ background:var(--paper-alt); font-weight:700; color:var(--ink); font-size:13px; }
.services-table tbody td:first-child{ font-weight:700; color:var(--ink); font-size:15px; white-space:nowrap; }
.services-table tbody td:last-child{ text-align:center; color:var(--ink-soft); }
.services-table tbody tr:last-child td{ border-bottom:0; }

.card-rail{ display:grid; grid-template-columns:repeat(auto-fill,minmax(220px,1fr)); gap:20px; }
.svc-card{
  display:block; background:var(--card); border:1px solid var(--line); overflow:hidden;
  transition:transform .35s var(--ease), border-color .35s var(--ease);
}
.svc-card:hover{ transform:translateY(-4px); border-color:var(--ink); }
.svc-card__media{ aspect-ratio:4/3; overflow:hidden; background:var(--tan); }
.svc-card__media img{ width:100%; height:100%; object-fit:cover; transition:transform .6s var(--ease); }
.svc-card:hover .svc-card__media img{ transform:scale(1.05); }
.svc-card__body{ padding:16px 18px 20px; }
.svc-card__body h4{ font-weight:800; font-size:18px; color:var(--ink); margin-bottom:6px; }
.svc-card__body p{ font-size:13px; color:var(--ink-soft); line-height:1.55; }
.svc-card__go{ display:flex; align-items:center; gap:6px; margin-top:12px; font-size:12px; font-weight:700; color:var(--tan-deep); }

/* ---------------- About / EEAT — FullBleed dark ---------------- */
.about{ background:var(--ink); color:var(--text-on-dark); padding:100px 0; margin-top:40px; }
.about__grid{ display:grid; grid-template-columns:1fr 1fr; gap:64px; align-items:start; }
.about .section-head h2{ color:var(--text-on-dark); }
.about .eyebrow{ color:var(--text-on-dark); border-color:var(--text-on-dark); }
.about .section-head p{ color:rgba(250,250,250,.72); }
.about-facts{ display:flex; flex-direction:column; gap:0; }
.about-facts dt{
  font-size:12px; letter-spacing:.08em; color:rgba(250,250,250,.55); padding-top:20px;
}
.about-facts dd{
  margin:6px 0 20px; font-size:18px; font-weight:700; padding-bottom:20px;
  border-bottom:1px solid var(--line-dark);
}
.about-facts dd:last-child{ border-bottom:0; }

/* ---------------- FAQ ---------------- */
.faq{ padding:40px 0 100px; }
.faq-list{ max-width:820px; }
.faq-item{ border-bottom:1px solid var(--line); }
.faq-item summary{
  cursor:pointer; list-style:none; padding:24px 0; display:flex; justify-content:space-between; align-items:center;
  gap:20px; font-weight:700; font-size:18px; color:var(--ink);
}
.faq-item summary::-webkit-details-marker{ display:none; }
.faq-item summary::after{
  content:'+'; font-family:var(--font-sans); font-size:22px; color:var(--tan-deep); flex-shrink:0; transition:transform .3s var(--ease);
}
.faq-item[open] summary::after{ content:'\2212'; }
.faq-item p{ padding:0 0 26px; max-width:680px; font-size:15px; color:var(--ink-soft); }

/* ---------------- CTA band ---------------- */
.cta-band{
  background:var(--accent); color:#fff; padding:72px 0; text-align:left;
}
.cta-band__inner{ display:flex; justify-content:space-between; align-items:center; gap:32px; flex-wrap:wrap; }
.cta-band h2{ font-weight:800; letter-spacing:-.01em; font-size:clamp(24px,3vw,36px); max-width:520px; }
.cta-band .btn--ghost-dark{ border-color:rgba(255,255,255,.5); color:#fff; }
.cta-band .btn--ghost-dark:hover{ border-color:#fff; }

/* ---------------- Footer ---------------- */
.site-footer{ background:var(--paper-alt); border-top:1px solid var(--line); padding:64px 0 0; }
.site-footer__inner{
  max-width:var(--container); margin:0 auto; padding:0 32px 48px;
  display:grid; grid-template-columns:1.4fr 1fr 1fr; gap:48px;
}
.footer-brand{ font-weight:800; font-size:20px; color:var(--ink); margin-bottom:10px; }
.footer-col p{ font-size:13px; color:var(--ink-soft); margin-bottom:6px; }
.footer-col__title{ font-size:13px; font-weight:700; color:var(--ink); margin-bottom:14px; }
.footer-col a{ display:block; font-size:14px; color:var(--ink-soft); padding:5px 0; }
.footer-col a:hover{ color:var(--ink); font-weight:600; }
.site-footer__bottom{
  border-top:1px solid var(--line); padding:20px 32px; font-size:12px; color:var(--ink-soft);
  max-width:var(--container); margin:0 auto;
}

/* ---------------- 404 ---------------- */
.notfound{ padding:80px 0 140px; }
.notfound .eyebrow{ margin-bottom:18px; }
.notfound h1{ font-weight:800; letter-spacing:-.01em; font-size:clamp(32px,4.4vw,48px); color:var(--ink); }
.notfound p{ margin-top:16px; font-size:16px; color:var(--ink-soft); }

/* ---------------- Scroll-reveal animation system ----------------
   여러 패턴을 목적별로 다르게 적용한다(균일한 fade-up 반복 금지). */
/* 기본값은 항상 보이는 상태 — JS가 정상 동작할 때만(.js-reveal) 숨김→등장 애니메이션을 건다.
   JS 비활성/크롤러 렌더링/스크롤 이벤트 미발생 등 어떤 경우에도 본문 텍스트가 숨겨지지 않는다. */
.js-reveal .reveal-up{ opacity:0; transform:translateY(28px); transition:opacity .7s var(--ease), transform .7s var(--ease); }
.js-reveal .reveal-up.is-in{ opacity:1; transform:none; }

.js-reveal .reveal-clip{ clip-path:inset(0 0 100% 0); transition:clip-path 1s var(--ease); }
.js-reveal .reveal-clip.is-in{ clip-path:inset(0 0 0% 0); }

.js-reveal .reveal-side{ opacity:0; transform:translateX(-24px); transition:opacity .7s var(--ease), transform .7s var(--ease); }
.js-reveal .reveal-side.is-in{ opacity:1; transform:none; }

.js-reveal .reveal-stagger > *{ opacity:0; transform:translateY(20px); transition:opacity .6s var(--ease), transform .6s var(--ease); }
.js-reveal .reveal-stagger.is-in > *{ opacity:1; transform:none; }
.js-reveal .reveal-stagger.is-in > *:nth-child(1){ transition-delay:.02s; }
.js-reveal .reveal-stagger.is-in > *:nth-child(2){ transition-delay:.09s; }
.js-reveal .reveal-stagger.is-in > *:nth-child(3){ transition-delay:.16s; }
.js-reveal .reveal-stagger.is-in > *:nth-child(4){ transition-delay:.23s; }
.js-reveal .reveal-stagger.is-in > *:nth-child(5){ transition-delay:.30s; }
.js-reveal .reveal-stagger.is-in > *:nth-child(6){ transition-delay:.37s; }

@media (prefers-reduced-motion: reduce){
  .reveal-up,.reveal-clip,.reveal-side,.reveal-stagger > *{ transition:none !important; opacity:1 !important; transform:none !important; clip-path:none !important; }
}

/* ---------------- Responsive ---------------- */
@media (max-width:1024px){
  .hero{ grid-template-columns:1fr; min-height:auto; }
  .hero__media{ min-height:360px; order:-1; }
  .hero__text{ max-width:none; padding:48px 32px; }
  .about__grid{ grid-template-columns:1fr; gap:40px; }
  .site-footer__inner{ grid-template-columns:1fr 1fr; }
  .consult-grid{ grid-template-columns:1fr; }
}

@media (max-width:768px){
  .container{ padding:0 20px; }
  .main-nav{ display:none; }
  .nav-cta{ display:none; }
  .nav-toggle{ display:block; }
  .nav-toggle.is-open span:nth-child(1){ transform:translateY(10px) rotate(45deg); }
  .nav-toggle.is-open span:nth-child(2){ opacity:0; }
  .nav-toggle.is-open span:nth-child(3){ transform:translateY(-10px) rotate(-45deg); }
  .mobile-nav.is-open{ display:flex; }
  .site-header__inner{ padding:16px 20px; }
  .category-row{ grid-template-columns:1fr; gap:20px; padding:36px 0; }
  .site-footer__inner{ grid-template-columns:1fr; padding:0 20px 40px; gap:32px; }
  .cta-band__inner{ flex-direction:column; align-items:flex-start; }
  .hero__text{ padding:40px 20px; }
  .services{ padding:64px 0 20px; }
  .about{ padding:64px 0; }
  .about__grid{ padding:0 4px; }
}

@media (max-width:480px){
  .card-rail{ grid-template-columns:1fr 1fr; }
  .hero__facts{ gap:18px; }
  .site-footer__bottom{ padding:16px 20px; }
}