/*
Theme Name: DrainClogCost Guide
Theme URI: https://drainclogcost.stofarm.com/
Author: MUN
Description: 배관 막힘 수리 비용 시세 정보 플랫폼 전용 테마. 딥블루 디자인 시스템 기반.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 7.0
Requires PHP: 7.4
License: GNU General Public License v2 or later
Text Domain: drainclogcost
*/

/* ============ Design Tokens ============ */
:root{
  --blue:#1B5FAA;
  --blue-dark:#0E3A6B;
  --blue-ink:#0A2540;
  --blue-soft:#E8F1FA;
  --blue-mist:#F4F8FC;
  --teal:#0F7A6C;
  --teal-dark:#0A4A44;
  --amber:#F2A93B;
  --brick:#C0483B;
  --ink:#12233F;
  --text:#2A3644;
  --text-soft:#5C6B7A;
  --text-mute:#8A97A5;
  --line:#E3EAF2;
  --bg:#FFFFFF;
  --bg-soft:#F6F8FA;
  --white:#FFFFFF;
  --r-sm:8px; --r-md:14px; --r-lg:22px;
  --shadow-sm:0 1px 2px rgba(10,37,64,.06),0 4px 14px rgba(10,37,64,.06);
  --shadow-md:0 6px 24px rgba(10,37,64,.10);
  --shadow-lg:0 18px 50px rgba(10,37,64,.16);
  --font-body:'Pretendard Variable',Pretendard,-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Noto Sans KR',sans-serif;
  --font-display:'Noto Serif KR','Noto Sans KR',serif;
  --sp-1:8px; --sp-2:16px; --sp-3:24px; --sp-4:32px; --sp-5:48px; --sp-6:72px; --sp-7:104px;
  --radius-1:8px; --radius-2:14px; --radius-3:22px;
  --container:1160px; --content:760px;
  --ease:cubic-bezier(.4,0,.2,1);
}

/* ============ Reset / Base ============ */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-body);
  color:var(--text);
  background:var(--bg);
  font-size:16.5px;line-height:1.7;letter-spacing:-.011em;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--blue);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--blue-dark)}
h1,h2,h3,h4,h5,h6{color:var(--ink);line-height:1.35;letter-spacing:-.022em;font-weight:800;word-break:keep-all}
h1{font-size:clamp(2rem,5vw,3.4rem);line-height:1.22}
h2{font-size:clamp(1.45rem,3vw,1.95rem);margin:2.4em 0 .8em}
h3{font-size:1.28rem;margin:1.8em 0 .6em}
p{margin:0 0 1.1em;word-break:keep-all}
ul,ol{margin:0 0 1.3em;padding-left:1.35em}
li{margin-bottom:.45em}
b,strong{color:var(--ink);font-weight:700}
blockquote{
  margin:1.6em 0;padding:1.1em 1.3em;border-left:4px solid var(--amber);
  background:var(--bg-soft);border-radius:0 var(--radius-1) var(--radius-1) 0;
  color:var(--text-soft);font-size:.98em;
}
table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:.95em}
th,td{padding:.8em .9em;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
th{background:var(--blue-soft);color:var(--blue-dark);font-weight:700;white-space:nowrap}
tr:nth-child(even) td{background:var(--bg-soft)}
code{background:var(--bg-soft);border:1px solid var(--line);border-radius:5px;padding:.1em .4em;font-size:.9em}

/* ============ Layout ============ */
.container{max-width:var(--container);margin:0 auto;padding:0 var(--sp-3)}
.section{padding:var(--sp-6) 0}
.section-soft{background:var(--bg-soft)}
.section-head{max-width:640px;margin:0 auto 2.6rem;text-align:center}
.section-head .eyebrow{display:inline-flex;align-items:center;gap:.5em;font-size:.82rem;font-weight:700;color:var(--blue);background:var(--blue-soft);padding:.4em 1em;border-radius:999px;margin-bottom:1em;letter-spacing:.01em}
.section-head h2{margin:.2em 0 .5em;font-size:clamp(1.5rem,3vw,2.1rem)}
.section-head p{color:var(--text-soft);font-size:1.02rem;margin:0}

/* ============ Header ============ */
.site-header{
  position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:var(--sp-3);height:72px}
.brand{display:flex;align-items:center;gap:.7em;flex-shrink:0}
.brand-logo{width:40px;height:40px;border-radius:11px;overflow:hidden;box-shadow:var(--shadow-sm)}
.brand-logo img{width:100%;height:100%;object-fit:cover}
.brand-text{font-size:1.02rem;font-weight:800;color:var(--ink);letter-spacing:-.02em;line-height:1.2}
.brand-text small{display:block;font-size:.7rem;font-weight:600;color:var(--text-mute);letter-spacing:.02em}
.main-nav{margin-left:auto;display:flex;align-items:center;gap:var(--sp-1)}
.main-nav a{display:inline-flex;align-items:center;min-height:44px;padding:.35em .95em;border-radius:999px;color:var(--text-soft);font-weight:600;font-size:.95rem}
.main-nav a:hover,.main-nav a:focus-visible{color:var(--blue-dark);background:var(--blue-soft)}
.main-nav a.current{color:var(--blue-dark);background:var(--blue-soft)}
.nav-cta{background:var(--blue);color:#fff !important;box-shadow:var(--shadow-sm)}
.nav-cta:hover{background:var(--blue-dark);color:#fff !important}
.nav-toggle{display:none;background:none;border:0;width:44px;height:44px;border-radius:10px;cursor:pointer;color:var(--ink)}
.nav-toggle span{display:block;width:20px;height:2px;background:currentColor;margin:5px auto;border-radius:2px;transition:.25s var(--ease)}
@media (max-width:960px){
  .nav-toggle{display:block;margin-left:auto}
  .main-nav{
    position:fixed;inset:72px 0 auto 0;flex-direction:column;align-items:stretch;gap:0;
    background:#fff;padding:var(--sp-2) var(--sp-3) var(--sp-3);border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-md);transform:translateY(-8px);opacity:0;pointer-events:none;transition:.25s var(--ease);
  }
  .main-nav.open{transform:none;opacity:1;pointer-events:auto}
  .main-nav a{min-height:48px;justify-content:flex-start;border-radius:10px}
  .nav-cta{margin-top:var(--sp-1);justify-content:center}
}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.55em;
  min-height:48px;padding:.7em 1.5em;border-radius:999px;border:0;cursor:pointer;
  font-family:var(--font-body);font-weight:700;font-size:.98rem;letter-spacing:-.01em;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease);
  text-decoration:none;
}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 10px 24px rgba(27,95,170,.28)}
.btn-primary:hover{background:var(--blue-dark);color:#fff;transform:translateY(-2px);box-shadow:0 14px 30px rgba(27,95,170,.34)}
.btn-ghost{background:transparent;color:var(--blue-dark);border:1.5px solid var(--blue);}
.btn-ghost:hover{background:var(--blue-soft);color:var(--blue-dark);transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--blue-dark);box-shadow:var(--shadow-md)}
.btn-light:hover{background:var(--blue-soft);transform:translateY(-2px)}
.btn-amber{background:var(--amber);color:#3A2A08;box-shadow:0 10px 24px rgba(242,169,59,.32)}
.btn-amber:hover{background:#E09A26;transform:translateY(-2px)}
.btn:focus-visible{outline:3px solid var(--amber);outline-offset:2px}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(150deg,var(--blue-ink) 0%,var(--blue-dark) 46%,var(--blue) 100%);
  color:#fff;padding:var(--sp-7) 0;
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.55;
  background:
    radial-gradient(720px 420px at 82% 18%,rgba(242,169,59,.22),transparent 62%),
    radial-gradient(640px 520px at 8% 88%,rgba(232,241,250,.16),transparent 60%);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.35;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:44px 44px;
  -webkit-mask-image:radial-gradient(760px 560px at 70% 30%,#000,transparent);
          mask-image:radial-gradient(760px 560px at 70% 30%,#000,transparent);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:var(--sp-6);align-items:center}
.hero .eyebrow{display:inline-flex;align-items:center;gap:.5em;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);color:#fff;padding:.5em 1.1em;border-radius:999px;font-size:.85rem;font-weight:600;margin-bottom:1.4em;backdrop-filter:blur(6px)}
.hero h1{color:#fff;font-size:clamp(2.1rem,4.6vw,3.5rem);line-height:1.18;letter-spacing:-.03em;margin-bottom:.55em}
.hero .lead{font-size:clamp(1.02rem,1.6vw,1.18rem);color:#D7E6F7;max-width:34em;margin-bottom:1.8em;line-height:1.75}
.hero .lead b{color:#fff}
.hero-actions{display:flex;flex-wrap:wrap;gap:.9em;margin-bottom:2.2em}
.hero-facts{display:flex;flex-wrap:wrap;gap:.6em 1.6em;color:#C9DDF3;font-size:.9rem}
.hero-facts span{display:inline-flex;align-items:center;gap:.45em}
.hero-facts i{width:8px;height:8px;border-radius:50%;background:var(--amber);flex-shrink:0}
.hero-visual{position:relative;min-height:440px}
.hero-card{
  position:absolute;background:rgba(255,255,255,.97);border-radius:var(--radius-3);
  box-shadow:var(--shadow-lg);padding:1.25em 1.35em;color:var(--ink);
  backdrop-filter:blur(8px);transition:transform .25s var(--ease);
}
.hero-card .hc-k{font-size:.72rem;font-weight:700;color:var(--text-mute);letter-spacing:.06em;margin-bottom:.3em}
.hero-card .hc-t{font-size:1.06rem;font-weight:800;line-height:1.35}
.hero-card .hc-s{font-size:.8rem;color:var(--text-soft);margin-top:.25em}
.hc-1{top:2%;left:0;width:270px}
.hc-2{top:34%;right:0;width:250px;animation-delay:.12s}
.hc-3{bottom:8%;left:8%;width:290px}
.hc-4{top:2%;right:6%;width:210px;background:var(--amber);color:#3A2A08}
.hc-4 .hc-k{color:rgba(58,42,8,.66)}
.hc-4 .hc-s{color:rgba(58,42,8,.72)}
.hero-card:hover{transform:translateY(-6px)}
@media (max-width:960px){
  .hero{padding:var(--sp-6) 0}
  .hero-inner{grid-template-columns:1fr;gap:var(--sp-5)}
  .hero-visual{min-height:380px}
}
@media (max-width:600px){
  .hero-visual{display:none}
}

/* ============ Cards / Grids ============ */
.grid{display:grid;gap:var(--sp-3)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
@media (max-width:960px){.grid-4{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){.grid-4,.grid-3,.grid-2{grid-template-columns:1fr}}

.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-3);
  box-shadow:var(--shadow-sm);padding:1.7em 1.6em;transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md)}
.card .card-ic{width:48px;height:48px;border-radius:13px;background:var(--blue-soft);color:var(--blue);display:flex;align-items:center;justify-content:center;margin-bottom:1em;font-size:1.3rem}
.card h3{font-size:1.08rem;margin:0 0 .5em;letter-spacing:-.02em}
.card p{font-size:.93rem;color:var(--text-soft);margin:0;line-height:1.65}
.card-link{margin-top:1.1em;font-size:.9rem;font-weight:700;display:inline-flex;align-items:center;gap:.4em}
.card-link::after{content:"→";transition:transform .2s var(--ease)}
.card-link:hover::after{transform:translateX(4px)}

/* Article cards */
.article-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-3);overflow:hidden;box-shadow:var(--shadow-sm);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.article-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md)}
.article-thumb{position:relative;aspect-ratio:4/3;overflow:hidden;background:var(--blue-soft)}
.article-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.article-card:hover .article-thumb img{transform:scale(1.05)}
.article-body{padding:1.25em 1.3em 1.4em;display:flex;flex-direction:column;gap:.5em;flex:1}
.article-body .cat{font-size:.74rem;font-weight:700;color:var(--blue);letter-spacing:.02em}
.article-body h3{font-size:1.06rem;line-height:1.42;margin:0;flex:1}
.article-body h3 a{color:var(--ink)}
.article-body h3 a:hover{color:var(--blue)}
.article-body .meta{font-size:.8rem;color:var(--text-mute)}

/* Carousel */
.carousel{position:relative;overflow:hidden;margin:0 calc(var(--sp-3)*-1);padding:0 var(--sp-3)}
.carousel-track{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(280px,330px);gap:var(--sp-3);overflow-x:auto;scroll-snap-type:x mandatory;padding:var(--sp-1) var(--sp-1) var(--sp-3);scrollbar-width:thin;scrollbar-color:var(--blue-soft) transparent}
.carousel-track::-webkit-scrollbar{height:8px}
.carousel-track::-webkit-scrollbar-thumb{background:var(--blue-soft);border-radius:99px}
.carousel-track::-webkit-scrollbar-track{background:transparent}
.carousel-item{scroll-snap-align:start}

/* Steps / Timeline */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--sp-3);counter-reset:step}
.step{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-3);padding:1.6em 1.4em;box-shadow:var(--shadow-sm)}
.step::before{counter-increment:step;content:counter(step);position:absolute;top:-14px;left:1.2em;width:30px;height:30px;border-radius:50%;background:var(--blue);color:#fff;font-weight:800;font-size:.9rem;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-sm)}
.step h3{font-size:1rem;margin:0 0 .4em}
.step p{font-size:.88rem;color:var(--text-soft);margin:0;line-height:1.6}
@media (max-width:960px){.steps{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.steps{grid-template-columns:1fr}}

/* Cost bars (inline chart) */
.bar-chart{margin:1.6em 0;display:grid;gap:.8em}
.bar-row{display:grid;grid-template-columns:minmax(86px,140px) 1fr 74px;align-items:center;gap:.9em;font-size:.9rem}
.bar-label{font-weight:700;color:var(--ink)}
.bar-track{height:12px;background:var(--blue-soft);border-radius:99px;overflow:hidden}
.bar-fill{display:block;height:100%;width:calc(var(--w,50%)*1);background:linear-gradient(90deg,var(--blue),var(--teal));border-radius:99px;transition:width .8s var(--ease)}
.bar-val{color:var(--text-soft);font-weight:600;text-align:right;white-space:nowrap}
@media (max-width:560px){.bar-row{grid-template-columns:1fr;gap:.3em}.bar-val{text-align:left}}

/* Callout / FAQ */
.callout{border-radius:var(--radius-2);padding:1.2em 1.35em;margin:1.6em 0;font-size:.96em;border:1px solid}
.callout-tip{background:var(--blue-mist);border-color:#C9DBEF;color:var(--blue-dark)}
.callout-warn{background:#FDF3EA;border-color:#F3D9BC;color:#7A4A10}
.callout-danger{background:#FBEEEC;border-color:#F0CCC6;color:#8E3327}
.callout b{display:block;margin-bottom:.3em}
.faq-list{display:grid;gap:.9em;margin:1.6em 0}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius-2);overflow:hidden}
.faq-item summary{display:flex;justify-content:space-between;align-items:center;gap:1em;padding:1.05em 1.2em;font-weight:700;color:var(--ink);cursor:pointer;min-height:44px;list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:1.3rem;color:var(--blue);transition:transform .25s var(--ease);flex-shrink:0}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item .faq-a{padding:0 1.2em 1.2em;color:var(--text-soft);font-size:.94em;line-height:1.7}
.faq-item .faq-a p{margin:0 0 .6em}

/* Notices */
.legal-notice{font-size:.85em;color:#5F6F7E;background:#F6F8FA;border-left:3px solid #C7D2DE;padding:12px 16px;margin:2.4em 0 1.2em;border-radius:0 8px 8px 0}
.legal-notice p{margin:.4em 0}
.ai-notice{font-size:.85em;color:#8A97A5;margin:1.6em 0 0}
.ai-image-notice{font-size:.82em;color:var(--text-mute);margin-top:.6em}

/* ============ Article (single) ============ */
.article-wrap{max-width:var(--content);margin:0 auto;padding:var(--sp-6) 0 var(--sp-7)}
.article-head{text-align:center;margin-bottom:2.4em}
.article-head .cat{display:inline-block;font-size:.8rem;font-weight:700;color:var(--blue);background:var(--blue-soft);padding:.35em 1em;border-radius:999px;margin-bottom:1.1em}
.article-head h1{font-size:clamp(1.7rem,3.6vw,2.5rem);line-height:1.3;margin-bottom:.5em}
.article-head .meta{color:var(--text-mute);font-size:.88rem}
.article-hero{border-radius:var(--radius-3);overflow:hidden;box-shadow:var(--shadow-md);margin-bottom:2.2em}
.article-hero img{width:100%;aspect-ratio:16/9;object-fit:cover}
.article-content{font-size:1.02rem}
.article-content h2{position:relative;padding-top:.4em}
.article-content h2::before{content:"";position:absolute;top:0;left:0;width:34px;height:4px;border-radius:4px;background:linear-gradient(90deg,var(--blue),var(--teal))}
.article-content a{text-decoration:underline;text-underline-offset:3px;text-decoration-color:#B9CDE6;text-decoration-thickness:1px}
.article-content a:hover{text-decoration-color:var(--blue)}
.article-content table{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch;white-space:normal}
.article-content img{border-radius:var(--radius-2);margin:1.4em 0}
.related-box{margin-top:var(--sp-6);padding-top:var(--sp-4);border-top:1px solid var(--line)}
.related-box h2{font-size:1.3rem;margin:0 0 1.2em}
.related-box .grid{grid-template-columns:repeat(3,1fr)}
@media (max-width:760px){.related-box .grid{grid-template-columns:1fr}}

/* TOC (easy-table-of-contents) override */
#ez-toc-container{
  background:var(--blue-mist) !important;border:1px solid #C9DBEF !important;
  border-radius:var(--radius-2) !important;padding:1.2em 1.4em !important;
  box-shadow:none !important;font-size:.92em;max-width:100%;
}
#ez-toc-container a{color:var(--blue-dark) !important;text-decoration:none !important}
#ez-toc-container .ez-toc-title{font-weight:800;color:var(--ink) !important}
#ez-toc-container ul{list-style:none;padding-left:0}
#ez-toc-container ul ul{padding-left:1.1em}
#ez-toc-container li{margin:.35em 0}
#ez-toc-container .ez-toc-toggle label,.ez-toc-js-icon-con{display:none !important}

/* ============ Page ============ */
.page-wrap{max-width:var(--content);margin:0 auto;padding:var(--sp-6) 0 var(--sp-7)}
.page-wrap h1{font-size:clamp(1.7rem,3.4vw,2.3rem);margin-bottom:.4em}
.page-meta{color:var(--text-mute);font-size:.88rem;margin-bottom:2em}

/* ============ Footer ============ */
.site-footer{background:var(--blue-ink);color:#C7D8EA;margin-top:0}
.footer-main{padding:var(--sp-6) 0 var(--sp-4)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:var(--sp-5)}
.footer-brand .brand-text{color:#fff}
.footer-brand .brand-text small{color:#8FB0D4}
.footer-brand p{font-size:.9rem;color:#A9C3DE;margin:1em 0 0;max-width:34em}
.footer-col h4{color:#fff;font-size:.98rem;margin-bottom:1em}
.footer-col a{display:inline-flex;align-items:center;min-height:38px;color:#A9C3DE;font-size:.9rem}
.footer-col a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:var(--sp-3) 0}
.footer-notices{font-size:.8em;color:#8FB0D4;line-height:1.7}
.footer-notices .legal-notice{background:rgba(255,255,255,.05);border-left-color:#5B7DA6;color:#A9C3DE;margin:1.2em 0 0}
.footer-notices .legal-notice p{margin:.3em 0}
.footer-meta{display:flex;flex-wrap:wrap;gap:.5em 1.6em;margin-top:1.2em;color:#7E9CBF;font-size:.8rem}
@media (max-width:860px){.footer-grid{grid-template-columns:1fr;gap:var(--sp-4)}}

/* ============ Misc ============ */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .45s var(--ease),transform .45s var(--ease)}
.reveal.in{opacity:1;transform:none}
:focus-visible{outline:3px solid var(--amber);outline-offset:2px;border-radius:4px}
.skip-link{position:absolute;left:-999px;top:0;background:var(--blue);color:#fff;padding:.8em 1.2em;border-radius:0 0 8px 0;z-index:100}
.skip-link:focus{left:0}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition:none !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}

/* ============ Article card (span variant, single related) ============ */
.article-card .article-body .t{font-size:1rem;font-weight:700;color:var(--ink);line-height:1.45;display:block;flex:1}
.article-card:hover .article-body .t{color:var(--blue)}
.article-card .article-body .t strong{font-weight:700}

/* ============ Figure / figcaption ============ */
figure{margin:1.8em 0}
figure img{width:100%;border-radius:var(--radius-2);box-shadow:var(--shadow-sm)}
figcaption{font-size:.82rem;color:var(--text-mute);text-align:center;margin-top:.6em;line-height:1.6}