/* ==========================================================
   AI런앤언 – 공통 스타일
   ========================================================== */
:root{
  --ink:#1d2433; --sub:#5a6476; --line:#e3e6ec; --bg:#f6f7fb; --paper:#ffffff; --soft:#fbfbfd;
  --navy:#14213d; --navy-2:#24365f; --accent:#f0a500; --accent-soft:#fff4d6;
  --c-nanako:#2f6fed; --c-wholesale:#13a36e; --c-vibe:#8a4dff; --c-silver:#e0662b;
  --mint:#2ee59d;
  /* 페이지별 클래스 색 (기본: 네이비) */
  --cc:var(--navy); --cc-soft:#eef1f7;
  --sans:'Noto Sans KR',-apple-system,BlinkMacSystemFont,'Malgun Gothic',sans-serif;
  --serif:'Noto Serif KR','Batang',serif;
  --radius:14px; --header-h:68px; --wrap:1120px;
}
body[data-class="nanako"]{--cc:var(--c-nanako);--cc-soft:#e9f0fe}
body[data-class="wholesale"]{--cc:var(--c-wholesale);--cc-soft:#e3f6ee}
body[data-class="vibecoding"]{--cc:var(--c-vibe);--cc-soft:#f1eaff}
body[data-class="silver-youtube"]{--cc:var(--c-silver);--cc-soft:#fdeee6}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 12px);-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--sans);font-size:16px;color:var(--ink);background:var(--bg);line-height:1.7;word-break:keep-all;overflow-wrap:break-word}
body[data-class="silver-youtube"] main{font-size:18px}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
h1,h2,h3,h4{line-height:1.35;margin:0}
p{margin:0 0 12px}
ul,ol{margin:0;padding-left:1.25em}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 16px}
@media (min-width:768px){.wrap{padding:0 28px}}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}
.skip{position:absolute;left:-999px;top:0;background:var(--navy);color:#fff;padding:8px 14px;z-index:100}
.skip:focus{left:8px}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font:inherit;font-weight:700;font-size:15px;line-height:1.2;text-decoration:none;padding:13px 22px;border-radius:10px;border:2px solid transparent;cursor:pointer;transition:background .15s,color .15s,border-color .15s}
.btn-primary{background:var(--accent);color:var(--navy)}
.btn-primary:hover{background:#ffb81f}
.btn-ghost{border-color:rgba(255,255,255,.5);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.1)}
.btn-navy{background:var(--navy);color:#fff}
.btn-navy:hover{background:var(--navy-2)}
.btn-class{background:var(--cc);color:#fff}
.btn-class:hover{filter:brightness(1.08)}
.btn svg{width:18px;height:18px;flex:none}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(8px)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:var(--header-h);gap:16px;max-width:1400px}
.logo{font-family:var(--serif);font-weight:900;font-size:24px;color:var(--navy);text-decoration:none;letter-spacing:-.02em;white-space:nowrap}
.logo span{color:var(--accent)}
.site-header .logo{display:inline-flex;align-items:center;gap:10px}
.logo-mark{width:38px;height:38px;flex:none;display:block}
.site-header .logo .logo-ko{color:var(--navy)}
.logo-ko em{font-style:normal;color:var(--accent)}
.site-header .logo .logo-en{font-family:var(--sans);font-size:10.5px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;line-height:1.25;color:var(--sub);border-left:1px solid var(--line);padding-left:10px}
@media (max-width:359px){.site-header .logo .logo-en{display:none}}
.gnb{display:flex;align-items:center;gap:4px}
.gnb ul{display:flex;list-style:none;margin:0;padding:0;gap:2px}
.gnb a{display:block;text-decoration:none;font-size:15px;font-weight:500;color:var(--ink);padding:8px 10px;border-radius:8px;white-space:nowrap}
.gnb ul a:hover{background:var(--bg)}
.gnb ul a[aria-current="page"]{color:var(--navy);font-weight:700;background:var(--accent-soft);box-shadow:inset 0 -3px 0 var(--accent)}
.gnb .nav-cta{margin-left:8px;background:var(--navy);color:#fff;font-weight:700;padding:9px 16px}
.gnb .nav-cta:hover{background:var(--navy-2)}
.menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer;align-items:center;justify-content:center;padding:0}
.menu-toggle span,.menu-toggle span::before,.menu-toggle span::after{display:block;width:20px;height:2px;background:var(--navy);border-radius:2px;position:relative;transition:transform .2s,background .2s}
.menu-toggle span::before,.menu-toggle span::after{content:"";position:absolute;left:0}
.menu-toggle span::before{top:-6px}
.menu-toggle span::after{top:6px}
.menu-toggle[aria-expanded="true"] span{background:transparent}
.menu-toggle[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg)}

@media (max-width:1100px){
  .menu-toggle{display:inline-flex}
  .gnb{position:absolute;left:0;right:0;top:100%;display:none;flex-direction:column;align-items:stretch;gap:0;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 12px 24px rgba(20,33,61,.1);padding:8px 16px 16px;max-height:calc(100vh - var(--header-h));overflow-y:auto}
  .gnb.is-open{display:flex}
  .gnb ul{flex-direction:column;gap:0}
  .gnb ul a{padding:14px 8px;border-bottom:1px solid var(--line);border-radius:0;white-space:normal;font-size:16px}
  .gnb ul a[aria-current="page"]{box-shadow:inset 4px 0 0 var(--accent)}
  .gnb .nav-cta{margin:14px 0 0;text-align:center;padding:14px}
}

/* ---------- Sections ---------- */
.section{padding:64px 0}
.section.alt{background:var(--soft)}
.section.white{background:var(--paper)}
@media (min-width:768px){.section{padding:88px 0}}
.eyebrow{font-size:13px;font-weight:700;letter-spacing:.15em;color:var(--accent);text-transform:uppercase;margin-bottom:6px}
.sec-title{font-family:var(--serif);font-size:clamp(24px,4vw,32px);color:var(--navy);margin-bottom:10px}
.lead{color:var(--sub);font-size:17px;max-width:46em;margin-bottom:32px}
body[data-class="silver-youtube"] .lead{font-size:19px}
.center{text-align:center}
.center .lead{margin-left:auto;margin-right:auto}

/* ---------- Home hero ---------- */
.hero{background:linear-gradient(135deg,#14213d 0%,#24365f 60%,#2d4373 100%);color:#fff;position:relative;overflow:hidden;padding:72px 0 80px}
.hero::after{content:"";position:absolute;right:-140px;top:-140px;width:460px;height:460px;border-radius:50%;background:radial-gradient(circle,rgba(240,165,0,.35),transparent 70%);pointer-events:none}
.hero .wrap{position:relative;z-index:1}
.hero .tag{display:inline-block;font-size:13px;border:1px solid rgba(255,255,255,.35);padding:4px 12px;border-radius:99px;margin-bottom:22px}
.hero h1{font-family:var(--serif);font-size:clamp(44px,9vw,76px);font-weight:900;line-height:1.1;letter-spacing:-.02em}
.hero h1 span{color:var(--accent)}
.hero .en{font-size:clamp(15px,2vw,19px);opacity:.75;margin-top:8px;letter-spacing:.08em}
.hero .slogan{margin-top:28px;font-size:clamp(22px,3.6vw,30px);font-weight:700}
.hero .desc{margin-top:14px;max-width:640px;opacity:.88;font-size:17px}
.badges{margin-top:30px;display:flex;flex-wrap:wrap;gap:10px;list-style:none;padding:0}
.badges li{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.1);padding:7px 14px;border-radius:8px;font-size:14px}
.badges svg{width:16px;height:16px;flex:none;color:var(--accent)}
.hero-actions{margin-top:36px;display:flex;flex-wrap:wrap;gap:12px}

/* ---------- Why ---------- */
.why-grid{display:grid;grid-template-columns:1fr;gap:18px}
@media (min-width:768px){.why-grid{grid-template-columns:1fr 1fr}}
.why-box{border:1px solid var(--line);border-radius:var(--radius);padding:26px;background:#fff}
.why-box h3{font-size:18px;margin-bottom:10px}
.why-box.then{background:#f3f4f7}
.why-box.now{background:var(--accent-soft);border-color:#f3d48a}
.why-box ul{color:var(--sub)}
.why-box li{margin-bottom:4px}
.quote{margin:28px 0 0;padding:22px 26px;border-left:5px solid var(--accent);background:#fff;font-size:17px;font-weight:500;border-radius:0 var(--radius) var(--radius) 0}

/* ---------- Values ---------- */
.values{display:grid;grid-template-columns:1fr;gap:18px}
@media (min-width:768px){.values{grid-template-columns:repeat(3,1fr)}}
.value{border-radius:var(--radius);padding:28px 24px;background:#fff;border:1px solid var(--line)}
.value .num{font-family:var(--serif);font-size:36px;font-weight:900;color:var(--accent);line-height:1}
.value h3{margin:12px 0 8px;font-size:19px}
.value p{font-size:15px;color:var(--sub);margin:0}

/* ---------- Class chips & blocks (home) ---------- */
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:28px;list-style:none;padding:0}
.chips a{display:inline-flex;align-items:center;gap:8px;text-decoration:none;font-size:14px;font-weight:700;padding:8px 14px;border-radius:99px;background:#fff;border:1px solid var(--line)}
.chips a::before{content:"";width:10px;height:10px;border-radius:50%;background:var(--chip,var(--navy))}
.chips a:hover{border-color:var(--chip)}
.k-nanako{--k:var(--c-nanako);--k-soft:#e9f0fe}
.k-wholesale{--k:var(--c-wholesale);--k-soft:#e3f6ee}
.k-vibecoding{--k:var(--c-vibe);--k-soft:#f1eaff}
.k-silver{--k:var(--c-silver);--k-soft:#fdeee6}
.class-list{display:grid;gap:28px}
.class-block{background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;display:grid;grid-template-columns:1fr}
@media (min-width:900px){.class-block{grid-template-columns:280px 1fr}}
.class-block .side{background:var(--k);color:#fff;padding:28px 24px;display:flex;flex-direction:column;gap:14px}
.class-block .no{font-size:13px;letter-spacing:.12em;opacity:.85;font-weight:700}
.class-block h3{font-family:var(--serif);font-size:26px;line-height:1.3}
.class-block .who{align-self:flex-start;font-size:14px;background:rgba(255,255,255,.2);border-radius:6px;padding:4px 10px}
.class-block .body{padding:28px 24px}
@media (min-width:768px){.class-block .body{padding:32px 34px}}
.class-block .catch{font-weight:700;font-size:18px;margin-bottom:12px;color:var(--navy)}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px;list-style:none;padding:0}
.tags li{font-size:13px;background:var(--k-soft,#f1f3f8);color:var(--k,var(--sub));border-radius:6px;padding:3px 10px;font-weight:500}
.class-block h4{font-size:14px;color:var(--navy);margin:16px 0 6px;letter-spacing:.02em}
.class-block .body>ul{color:#3a4356;font-size:15.5px}
.class-block .body>ul li{margin-bottom:3px}
.steps-mini{list-style:none;padding:0;display:grid;grid-template-columns:1fr;gap:8px;margin:0}
@media (min-width:600px){.steps-mini{grid-template-columns:1fr 1fr}}
.steps-mini li{display:flex;gap:10px;align-items:baseline;background:var(--k-soft);border-radius:8px;padding:9px 12px;font-size:14.5px}
.steps-mini b{color:var(--k);white-space:nowrap;font-size:13px;letter-spacing:.04em}
.steps-mini small{margin-left:auto;color:var(--sub);white-space:nowrap;padding-left:8px}
.class-block .more{margin-top:22px;display:flex;justify-content:flex-end}
.class-block .more a{background:var(--k);color:#fff}

/* ---------- Tables ---------- */
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;background:#fff;border:1px solid var(--line);border-radius:var(--radius)}
table{width:100%;border-collapse:collapse;font-size:15px}
th,td{border-bottom:1px solid var(--line);padding:13px 14px;text-align:left;vertical-align:top}
thead th{background:#f3f5f9;color:var(--navy);font-weight:700;white-space:nowrap}
tbody tr:last-child th,tbody tr:last-child td{border-bottom:0}
/* 모바일 카드형 표 */
@media (max-width:767px){
  .table-cards{border:0;background:transparent}
  .table-cards thead{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
  .table-cards tbody,.table-cards tr,.table-cards td{display:block;width:100%}
  .table-cards tr{background:#fff;border:1px solid var(--line);border-radius:var(--radius);margin-bottom:12px;padding:6px 0}
  .table-cards td{border:0;padding:6px 16px}
  .table-cards td::before{content:attr(data-label);display:block;font-size:12.5px;font-weight:700;color:var(--accent);letter-spacing:.04em}
  .table-cards td:first-child{font-weight:700;font-size:17px;color:var(--navy)}
  .table-cards td:first-child::before{display:none}
}
.info-table th{width:150px;background:var(--cc-soft);color:var(--navy);white-space:nowrap;font-weight:700}
@media (max-width:767px){
  .info-table,.info-table tbody,.info-table tr,.info-table th,.info-table td{display:block;width:100%}
  .info-table th{border-bottom:0;padding-bottom:4px}
  .info-table td{padding-top:4px}
}

/* ---------- Method ---------- */
.flow{display:grid;grid-template-columns:1fr 1fr;gap:14px;list-style:none;padding:0;margin:0}
@media (min-width:900px){.flow{grid-template-columns:repeat(4,1fr)}}
.flow li{text-align:center;padding:24px 14px;border-radius:var(--radius);background:#fff;border:1px solid var(--line)}
.flow .ico{width:44px;height:44px;margin:0 auto;border-radius:12px;background:var(--accent-soft);color:var(--navy);display:flex;align-items:center;justify-content:center}
.flow .ico svg{width:24px;height:24px}
.flow b{display:block;font-size:18px;margin:10px 0 4px;color:var(--navy);letter-spacing:.04em}
.flow p{font-size:14px;color:var(--sub);margin:0}
.points{margin-top:28px;display:grid;grid-template-columns:1fr;gap:16px}
@media (min-width:768px){.points{grid-template-columns:1fr 1fr}}
.point{display:flex;gap:12px;align-items:flex-start;font-size:15.5px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.point p{margin:0}
.chk{flex:none;width:26px;height:26px;border-radius:50%;background:var(--navy);color:#fff;display:flex;align-items:center;justify-content:center;margin-top:1px}
.chk svg{width:14px;height:14px}

/* ---------- Partner ---------- */
.partner{display:grid;grid-template-columns:1fr;gap:16px}
@media (min-width:768px){.partner{grid-template-columns:1fr 1fr}}
.pcard{border:1px solid var(--line);border-radius:var(--radius);padding:24px;background:#fff}
.pcard h3{font-size:18px;margin-bottom:6px;color:var(--navy)}
.pcard p{font-size:15px;color:var(--sub);margin:0}

/* ---------- Instructor ---------- */
.instructor{display:grid;grid-template-columns:1fr;gap:20px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:18px;padding:26px}
@media (min-width:600px){.instructor{grid-template-columns:auto 1fr;gap:28px}}
.avatar{width:96px;height:96px;border-radius:50%;background:var(--navy);color:var(--accent);display:flex;align-items:center;justify-content:center;font-family:var(--serif);font-size:30px;font-weight:900}
.instructor h3{font-size:21px;color:var(--navy)}
.instructor .role{color:var(--sub);font-size:15px;margin:4px 0 10px}
.instructor ul{list-style:none;padding:0;display:flex;flex-wrap:wrap;gap:8px}
.instructor li{font-size:14px;background:var(--accent-soft);border-radius:6px;padding:4px 10px}

/* ---------- Contact ---------- */
.contact{background:var(--navy);color:#fff;padding:72px 0}
.contact .sec-title{color:#fff}
.contact-grid{display:grid;grid-template-columns:1fr;gap:28px;align-items:center}
@media (min-width:768px){.contact-grid{grid-template-columns:1.4fr 1fr}}
.contact .tel{display:inline-block;font-size:clamp(28px,5vw,38px);font-weight:900;color:var(--accent);text-decoration:none;letter-spacing:.02em;margin:10px 0 6px}
.contact address{font-style:normal;opacity:.88}
.contact .note{opacity:.75;font-size:14px;margin-top:8px}
.contact .actions{margin-top:24px;display:flex;flex-wrap:wrap;gap:12px}
.qr-card{background:#fff;color:var(--ink);border-radius:18px;padding:22px;display:flex;align-items:center;gap:18px;max-width:380px}
.qr-card img{width:132px;height:132px;flex:none}
.qr-card b{display:block;color:var(--navy);font-size:17px;margin-bottom:4px}
.qr-card p{font-size:14px;color:var(--sub);margin:0}
.contact .sign{margin-top:44px;padding-top:28px;border-top:1px solid rgba(255,255,255,.15);font-family:var(--serif);font-size:20px;text-align:center}
.contact .sign span{color:var(--accent)}
@media (max-width:420px){.qr-card{flex-direction:column;text-align:center}}

/* ==========================================================
   Class detail pages
   ========================================================== */
.page-hero{background:var(--navy);color:#fff;position:relative;overflow:hidden;padding:64px 0 120px}
.page-hero::before{content:"";position:absolute;right:-140px;top:-160px;width:480px;height:480px;border-radius:50%;background:radial-gradient(circle,var(--cc),transparent 65%);opacity:.55;pointer-events:none}
.page-hero .wrap{position:relative;z-index:1}
.crumb{font-size:13px;opacity:.75;margin-bottom:18px}
.crumb a{text-decoration:none}
.crumb a:hover{text-decoration:underline}
.page-hero .no{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.12em;background:var(--cc);padding:5px 12px;border-radius:99px;margin-bottom:16px}
.page-hero h1{overflow-wrap:anywhere;font-family:var(--serif);font-size:clamp(30px,5.6vw,52px);font-weight:900;letter-spacing:-.02em}
.page-hero .who{margin-top:12px;font-size:16px;opacity:.85}
.page-hero .catch{margin-top:18px;font-size:clamp(17px,2.4vw,21px);max-width:44em;color:#dfe5f0}
.page-hero .catch b{color:#fff}
.page-hero .chip-row{margin-top:24px;display:flex;flex-wrap:wrap;gap:8px;list-style:none;padding:0}
.page-hero .chip-row li{border:1px solid rgba(255,255,255,.3);border-radius:8px;padding:6px 12px;font-size:14px;background:rgba(255,255,255,.06)}
.stats{display:grid;grid-template-columns:1fr 1fr;background:#fff;border:1px solid var(--line);border-radius:16px;margin-top:-72px;position:relative;z-index:2;box-shadow:0 18px 40px rgba(20,33,61,.1);list-style:none;padding:0}
@media (min-width:768px){.stats{grid-template-columns:repeat(4,1fr)}}
.stats li{text-align:center;padding:24px 12px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.stats li:nth-child(2n){border-right:0}
.stats li:nth-last-child(-n+2){border-bottom:0}
@media (min-width:768px){
  .stats li{border-bottom:0}
  .stats li:nth-child(2n){border-right:1px solid var(--line)}
  .stats li:last-child{border-right:0}
}
.stats b{display:block;font-family:var(--serif);font-size:clamp(26px,4vw,34px);color:var(--cc);line-height:1.2}
.stats span{font-size:14px;color:var(--sub)}

/* nanako dark hero */
.page-hero.dark{background:#0f1418}
.page-hero.dark::before{background:radial-gradient(circle,rgba(46,229,157,.35),transparent 65%);opacity:1}
.page-hero.dark .no{background:var(--mint);color:#0f1418}
.page-hero.dark h1 em{font-style:normal;color:var(--mint)}

/* section header for detail pages */
.d-head{display:flex;align-items:baseline;gap:14px;margin-bottom:10px}
.d-head .n{font-family:var(--serif);font-weight:900;font-size:16px;color:var(--cc);letter-spacing:.08em}
.d-head h2{font-family:var(--serif);font-size:clamp(24px,4vw,32px);color:var(--navy)}

.prose{background:#fff;border:1px solid var(--line);border-left:4px solid var(--cc);border-radius:var(--radius);padding:26px 24px}
@media (min-width:768px){.prose{padding:32px 36px}}
.prose p:last-child{margin-bottom:0}
.prose strong{color:var(--navy);box-shadow:inset 0 -.45em 0 var(--cc-soft)}

.grid-2,.grid-3,.grid-4{display:grid;grid-template-columns:1fr;gap:16px}
@media (min-width:600px){.grid-4{grid-template-columns:1fr 1fr}}
@media (min-width:768px){.grid-2{grid-template-columns:1fr 1fr}.grid-3{grid-template-columns:repeat(3,1fr)}}
@media (min-width:1000px){.grid-4{grid-template-columns:repeat(4,1fr)}}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.card h3{font-size:18px;color:var(--navy);margin-bottom:8px}
.card p{color:var(--sub);font-size:15px;margin:0}
body[data-class="silver-youtube"] .card p{font-size:17px}
.card .num{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:50%;background:var(--cc);color:#fff;font-weight:900;margin-bottom:12px}
.card.top{border-top:4px solid var(--cc)}
.card.dark{background:var(--navy);border-color:var(--navy);color:#fff}
.card.dark h3{color:#fff}
.card.dark p{color:#c9d3e3}
.card ul{color:var(--ink)}
.card li{margin-bottom:6px}
.span-2{grid-column:1/-1}
@media (min-width:768px){.grid-3 .span-2{grid-column:span 2}}

.pill-list{display:flex;flex-wrap:wrap;gap:10px;list-style:none;padding:0;margin:0}
.pill-list li{background:#fff;border:1px solid var(--cc);color:var(--navy);padding:8px 18px;border-radius:99px;font-size:15px}

.feat-row{display:grid;grid-template-columns:1fr;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;margin-top:18px}
@media (min-width:768px){.feat-row{grid-template-columns:repeat(3,1fr)}}
.feat-row div{background:var(--navy);color:#eef1f7;padding:24px}
.feat-row .r{font-family:var(--serif);color:var(--accent);font-size:22px;font-weight:900}
.feat-row h3{font-size:17px;margin:8px 0 6px;color:#fff}
.feat-row p{font-size:14.5px;color:#c9d3e3;margin:0}

/* curriculum */
.roadmap{display:grid;grid-template-columns:1fr;gap:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;margin-bottom:32px;list-style:none;padding:0}
@media (min-width:600px){.roadmap{grid-template-columns:1fr 1fr}}
@media (min-width:1000px){.roadmap{grid-template-columns:repeat(4,1fr)}}
.roadmap li{padding:20px;border-bottom:1px solid var(--line);border-top:5px solid var(--cc)}
@media (min-width:1000px){.roadmap li{border-bottom:0;border-right:1px solid var(--line)}.roadmap li:last-child{border-right:0}}
.roadmap .ph{font-size:13px;font-weight:800;letter-spacing:.06em;color:var(--cc)}
.roadmap h3{font-family:var(--serif);font-size:19px;margin:4px 0 6px;color:var(--navy)}
.roadmap p{font-size:14.5px;color:var(--sub);margin:0}

.phase{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;margin-bottom:20px}
.phase-head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:6px 14px;padding:16px 22px;background:var(--cc);color:#fff}
.phase-head .step{font-weight:800;font-size:13px;letter-spacing:.12em;opacity:.9;margin-right:10px}
.phase-head h3{display:inline;font-family:var(--serif);font-size:19px}
.phase-head .range{font-size:14px;font-weight:700;background:rgba(255,255,255,.2);padding:2px 10px;border-radius:99px}
.lesson{display:grid;grid-template-columns:72px 1fr;border-top:1px solid var(--line)}
.phase-head+.lesson{border-top:0}
.lesson .w{background:var(--cc-soft);color:var(--cc);font-family:var(--serif);font-weight:900;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:14px 6px;text-align:center;line-height:1.1}
.lesson .w b{font-size:26px}
.lesson .w small{font-size:12px;font-family:var(--sans);font-weight:700;margin-top:3px}
.lesson .c{padding:16px 20px}
.lesson h4{font-size:17px;color:var(--navy);margin-bottom:4px}
body[data-class="silver-youtube"] .lesson h4{font-size:19px}
.lesson p{color:var(--sub);font-size:15px;margin:0}
.lesson ul{color:var(--sub);font-size:15px;margin-top:6px}
body[data-class="silver-youtube"] .lesson ul,body[data-class="silver-youtube"] .lesson p{font-size:17px}
.lesson li{margin-bottom:3px}
.lesson .out{margin-top:10px;background:var(--accent-soft);border-radius:8px;padding:8px 12px;font-size:14.5px;color:var(--ink)}
body[data-class="silver-youtube"] .lesson .out{font-size:16.5px}
.lesson .out b{color:#8a5a00;margin-right:6px}
.badge-ai{display:inline-block;border:1px solid var(--cc);color:var(--cc);font-size:11px;font-weight:700;padding:0 7px;border-radius:4px;margin-left:8px;vertical-align:2px;letter-spacing:.04em;white-space:nowrap}
.milestone{display:inline-block;font-size:12px;font-weight:700;color:#fff;background:var(--accent);border-radius:99px;padding:1px 9px;margin-left:6px;vertical-align:2px;white-space:nowrap}
.mini-tags{display:inline-flex;gap:4px;margin-left:6px}
.mini-tags span{font-size:12px;border:1px solid var(--line);border-radius:5px;padding:0 6px;color:var(--sub);background:#fff}
@media (min-width:600px){.lesson{grid-template-columns:90px 1fr}}

.tool-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px;list-style:none;padding:0}
.tool-row li{background:#fff;border:1px solid var(--line);border-radius:99px;padding:6px 14px;font-size:14.5px;font-weight:500}

.pipe{display:grid;grid-template-columns:1fr 1fr;gap:10px;list-style:none;padding:0;margin:0;counter-reset:pipe}
@media (min-width:600px){.pipe{grid-template-columns:repeat(3,1fr)}}
@media (min-width:1000px){.pipe{grid-template-columns:repeat(6,1fr)}}
.pipe li{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 12px;text-align:center;counter-increment:pipe}
.pipe li::before{content:counter(pipe);display:flex;align-items:center;justify-content:center;width:30px;height:30px;margin:0 auto 8px;border-radius:50%;background:var(--cc);color:#fff;font-weight:900;font-size:14px}
.pipe b{display:block;font-family:var(--serif);font-size:17px;color:var(--navy)}
.pipe small{display:block;color:var(--sub);font-size:14px;line-height:1.5;margin-top:4px}

.callout{background:var(--cc-soft);border-left:5px solid var(--cc);border-radius:0 var(--radius) var(--radius) 0;padding:18px 22px;margin-top:20px}
.callout p:last-child{margin:0}

.disclaimer{font-size:13px;color:var(--sub);margin-top:28px;text-align:center}

/* nanako specifics */
.promo{display:grid;grid-template-columns:1fr;gap:12px;list-style:none;padding:0;margin:0}
@media (min-width:600px){.promo{grid-template-columns:1fr 1fr}}
@media (min-width:1000px){.promo{grid-template-columns:repeat(4,1fr)}}
.promo li{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px 20px;display:flex;flex-direction:column;gap:10px}
.promo .k{align-self:flex-start;background:var(--mint);color:#0f1418;font-weight:900;font-size:14px;border-radius:6px;padding:3px 12px}
.promo p{margin:0;font-size:15.5px}
.headcopy{text-align:center;font-family:var(--serif);font-size:clamp(22px,4vw,32px);color:var(--navy);line-height:1.45}
.headcopy em{font-style:normal;color:var(--cc);box-shadow:inset 0 -.35em 0 var(--cc-soft)}
.headcopy small{display:block;font-family:var(--sans);font-size:clamp(16px,2.4vw,19px);color:#b7860b;font-weight:700;margin-top:12px}
.achieve{display:flex;gap:16px;align-items:center;background:#0f1418;color:#fff;border-radius:18px;padding:24px 26px;border:1px solid rgba(46,229,157,.4)}
.achieve svg{width:44px;height:44px;flex:none;color:var(--accent)}
.achieve b{display:block;font-size:clamp(17px,2.6vw,20px)}
.achieve p{margin:4px 0 0;color:var(--mint)}
.level{list-style:none;padding:0;margin:0;display:grid;gap:12px;counter-reset:lv}
.level li{display:grid;grid-template-columns:64px 1fr;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;counter-increment:lv}
.level li::before{content:"Lv." counter(lv);display:flex;align-items:center;justify-content:center;background:var(--cc);color:#fff;font-weight:900;font-size:15px}
.level li:nth-child(1)::before{opacity:.55}.level li:nth-child(2)::before{opacity:.67}.level li:nth-child(3)::before{opacity:.8}.level li:nth-child(4)::before{opacity:.9}
.level div{padding:16px 20px}
.level h3{font-size:17px;color:var(--navy);margin-bottom:2px}
.level p{margin:0;color:var(--sub);font-size:15px}
.timetable{display:grid;grid-template-columns:1fr;gap:16px;align-items:stretch}
@media (min-width:768px){.timetable{grid-template-columns:1.4fr 1fr}}
.timetable table td:first-child{font-weight:700;color:var(--navy)}
.tt-note{background:var(--navy);color:#fff;border-radius:var(--radius);padding:24px;display:flex;flex-direction:column;justify-content:center;gap:10px}
.tt-note ul{list-style:none;padding:0;display:grid;gap:8px}
.tt-note li{display:flex;gap:10px;align-items:center}
.tt-note li::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--mint);flex:none}
.flyers{display:grid;grid-template-columns:1fr;gap:16px}
@media (min-width:768px){.flyers{grid-template-columns:1fr 1fr}}
.flyers img{border-radius:var(--radius);border:1px solid var(--line);width:100%}

/* other classes CTA */
.cta-band{background:var(--cc);color:#fff;border-radius:20px;padding:36px 28px;text-align:center}
.cta-band h2{font-family:var(--serif);font-size:clamp(22px,4vw,30px);margin-bottom:8px}
.cta-band p{opacity:.9}
.cta-band .actions{margin-top:20px;display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.cta-band .btn-ghost{border-color:rgba(255,255,255,.7)}
.other-classes{display:grid;grid-template-columns:1fr;gap:16px;margin-top:28px;list-style:none;padding:0}
@media (min-width:1000px){.other-classes{grid-template-columns:repeat(3,1fr)}}
.other-classes li{min-width:0}
.other-classes a{display:flex;flex-direction:column;gap:6px;height:100%;text-decoration:none;background:#fff;border:1px solid var(--line);border-top:5px solid var(--k);border-radius:var(--radius);padding:22px;transition:transform .15s,box-shadow .15s}
.other-classes a:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(20,33,61,.1)}
.other-classes .no{font-size:12px;font-weight:700;letter-spacing:.12em;color:var(--k)}
.other-classes b{font-size:18px;color:var(--navy);overflow-wrap:anywhere}
.other-classes span{font-size:14.5px;color:var(--sub)}
.other-classes .go{margin-top:auto;padding-top:8px;font-weight:700;color:var(--k);font-size:14.5px}

/* ---------- 실버 페이지: 본문 한 단계 크게 (18px 이상) ---------- */
body[data-class="silver-youtube"] main p,
body[data-class="silver-youtube"] main li,
body[data-class="silver-youtube"] main td,
body[data-class="silver-youtube"] main th,
body[data-class="silver-youtube"] .card p,
body[data-class="silver-youtube"] .lesson ul,
body[data-class="silver-youtube"] .lesson p{font-size:18px}
body[data-class="silver-youtube"] .lead{font-size:20px}
body[data-class="silver-youtube"] .card h3{font-size:20px}
body[data-class="silver-youtube"] .pipe small{font-size:16px}
body[data-class="silver-youtube"] .stats span{font-size:16px}
body[data-class="silver-youtube"] .mini-tags span{font-size:13px}

/* ---------- Footer ---------- */
.site-footer{background:#0e1830;color:#aeb8cc;padding:44px 0 32px;font-size:14px}
.site-footer .wrap{display:grid;gap:24px}
@media (min-width:900px){.site-footer .wrap{grid-template-columns:1.2fr 2fr}}
.site-footer .logo{color:#fff;font-size:22px}
.site-footer .slogan{margin-top:6px}
.site-footer ul{list-style:none;padding:0;display:grid;gap:6px}
.site-footer a{text-decoration:none}
.site-footer a:hover{color:#fff;text-decoration:underline}
.footer-cols{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:600px){.footer-cols{grid-template-columns:1fr 1fr}}
.footer-cols h2{font-size:13px;color:#fff;letter-spacing:.1em;margin-bottom:10px;font-family:var(--sans)}
.footer-cols address{font-style:normal;display:grid;gap:6px}
.copy{grid-column:1/-1;border-top:1px solid rgba(255,255,255,.1);padding-top:18px;font-size:13px}

/* ---------- 404 ---------- */
.notfound{min-height:60vh;display:flex;align-items:center;text-align:center}
.notfound .code{font-family:var(--serif);font-size:clamp(80px,18vw,140px);font-weight:900;color:var(--accent);line-height:1}

/* ---------- Reveal (가벼운 등장 효과) ---------- */
.js .reveal{opacity:0;transform:translateY(16px);transition:opacity .5s ease,transform .5s ease}
.js .reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js .reveal{opacity:1;transform:none;transition:none}
  *{transition:none!important}
}