/* =====================================================================
   Lộ Trình Nhật — Udemy-style marketplace look. Light theme, painted
   explicitly. Palette: near-black ink, soft-green CTA, warm-yellow badge.
   ===================================================================== */
:root{
  --ico-lock:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='1.75' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='4.5' y='10.5' width='15' height='10' rx='1.5'/%3E%3Cpath d='M8 10.5V7.5a4 4 0 0 1 8 0v3'/%3E%3C/svg%3E");
  --ico-check:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='1.75' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12.5l4.5 4.5L19 7.5'/%3E%3C/svg%3E");
  --ico-warn:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='1.75' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M12 3.5L2.5 20h19L12 3.5z'/%3E%3Cpath d='M12 9.5v5'/%3E%3Cpath d='M12 17.2v.3'/%3E%3C/svg%3E");
  --ico-yen:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='1.75' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M7 4l5 8 5-8M12 12v8M8 13.5h8M8 17h8'/%3E%3C/svg%3E");
  --bg:#FFFFFF; --bg-2:#F7F9FA; --ink:#1C1D1F; --muted:#6A6F73; --line:#D1D7DC; --line-2:#E4E8EB;
  --primary:#2E9E6E; --primary-dark:#23845B; --link:#1E7A4E;
  --dark:#1C1D1F; --on-dark:#FFFFFF; --on-dark-muted:#CFD3D8;
  --badge-bg:#ECEB98; --badge-ink:#3D3C0A;
  --good:#1E6E3D; --warn:#B4690E; --warn-bg:#FFF6E5;
  --shadow-card:0 2px 4px rgba(0,0,0,.08), 0 4px 12px rgba(0,0,0,.08);
  --shadow-float:0 2px 8px rgba(0,0,0,.12), 0 8px 24px rgba(0,0,0,.12);
  --radius:4px; --max:1340px;
  --font:"Be Vietnam Pro",-apple-system,BlinkMacSystemFont,"Segoe UI","Hiragino Sans","Noto Sans JP",sans-serif;
  --serif:"Source Serif 4",Georgia,"Hiragino Mincho ProN",serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);font-size:1rem;line-height:1.55}
img{max-width:100%;height:auto}
a{color:var(--link)}
h1,h2,h3,h4{margin:0;line-height:1.2;letter-spacing:-.01em;text-wrap:balance}
h1{font-size:clamp(1.6rem,1.3rem+1.4vw,2.2rem);font-weight:800}
h2{font-size:clamp(1.35rem,1.2rem+.7vw,1.7rem);font-weight:800}
h3{font-size:1.1rem;font-weight:700}
p{margin:0}
:focus-visible{outline:2px solid var(--link);outline-offset:2px}
.wrap{width:100%;max-width:var(--max);margin-inline:auto;padding-inline:24px}
.stack{display:flex;flex-direction:column}.stack-4{gap:4px}.stack-8{gap:8px}.stack-12{gap:12px}.stack-16{gap:16px}.stack-24{gap:24px}.stack-32{gap:32px}.stack-48{gap:48px}
.row{display:flex;flex-wrap:wrap;gap:8px 16px;align-items:center}
.small{font-size:.85rem;color:var(--muted)}
.xs{font-size:.75rem;color:var(--muted)}
.tnum{font-variant-numeric:tabular-nums}
.muted{color:var(--muted)}
.prose{max-width:46rem}
section{padding-block:clamp(32px,5vw,56px)}
.eyebrow{font-size:.75rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.src{font-size:.78rem;color:var(--muted);line-height:1.5}
.src a{color:var(--muted)}

/* ---------- Header ---------- */
.hdr{position:sticky;top:0;z-index:50;background:#fff;box-shadow:0 2px 4px rgba(0,0,0,.08),0 4px 12px rgba(0,0,0,.08)}
.hdr .bar{display:flex;align-items:center;gap:16px;min-height:72px}
.logo{display:flex;align-items:center;gap:8px;text-decoration:none;color:var(--ink);font-weight:800;font-size:1.15rem;letter-spacing:-.02em;white-space:nowrap}
.logo .mark{width:30px;height:30px;border-radius:6px;background:var(--primary);color:#fff;display:grid;place-items:center;font-size:.75rem;font-weight:800}
.hdr nav{display:flex;gap:2px;margin-left:8px}
.hdr nav a{text-decoration:none;color:var(--ink);font-size:.9rem;font-weight:500;padding:8px 10px;border-radius:var(--radius)}
.hdr nav a:hover{color:var(--link);background:#EAF6EF}
.hdr nav a[aria-current="page"]{color:var(--link);font-weight:700}
.hdr .spacer{flex:1}
.hdr .cta{white-space:nowrap}
@media(max-width:820px){
  .hdr .bar{flex-wrap:wrap;row-gap:0;min-height:0;padding-block:10px}
  .hdr nav{order:10;flex-basis:100%;margin-left:-10px;overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none}
  .hdr nav::-webkit-scrollbar{display:none}
  .hdr nav a{font-size:.85rem;padding:6px 10px;white-space:nowrap}
}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-family:var(--font);font-weight:700;font-size:1rem;min-height:48px;padding:0 16px;border-radius:var(--radius);border:1px solid transparent;cursor:pointer;text-decoration:none;line-height:1.2;transition:background .12s}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark)}
.btn-dark{background:var(--dark);color:#fff;border-color:var(--dark)}.btn-dark:hover{background:#000}
.btn-outline{background:#fff;color:var(--ink);border-color:var(--ink)}.btn-outline:hover{background:#F7F9FA}
.btn-block{width:100%}
.btn-sm{min-height:40px;font-size:.9rem}

/* ---------- Badges & chips ---------- */
.badge{display:inline-block;background:var(--badge-bg);color:var(--badge-ink);font-size:.72rem;font-weight:700;padding:3px 8px;border-radius:var(--radius);line-height:1.3;white-space:nowrap}
.badge-dark{background:#3E4143;color:#fff}
.badge-warn{background:var(--warn-bg);color:var(--warn)}
.chips{display:flex;flex-wrap:wrap;gap:6px}
.chip{font-size:.75rem;font-weight:700;padding:4px 9px;border-radius:99px;background:#EAF6EF;color:var(--link);border:1px solid #C9E7D5}
.chip[data-kind="exempt"]{background:#EAF5EE;color:var(--good);border-color:#C6E4D0}

/* ---------- Home hero ---------- */
.hero{background:var(--bg-2);border-bottom:1px solid var(--line-2);padding-block:clamp(36px,6vw,72px)}
.hero .grid{display:grid;gap:32px;align-items:center}
@media(min-width:900px){.hero .grid{grid-template-columns:1.1fr .9fr}}
.hero h1{font-family:var(--serif);font-weight:700;font-size:clamp(2rem,1.5rem+2.4vw,3.2rem);letter-spacing:-.02em;line-height:1.12}
.hero .lede{font-size:clamp(1.02rem,1rem+.3vw,1.2rem);color:var(--ink);max-width:36rem}
.hero-panel{background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-card);padding:20px}

/* ---------- Stat tiles ---------- */
.stats{display:grid;gap:1px;background:var(--line);border:1px solid var(--line)}
@media(min-width:640px){.stats{grid-template-columns:repeat(2,1fr)}}
@media(min-width:960px){.stats{grid-template-columns:repeat(4,1fr)}}
.stat{background:#fff;padding:18px 20px;display:flex;flex-direction:column;gap:4px}
.stat .v{font-size:1.7rem;font-weight:800;letter-spacing:-.02em;font-variant-numeric:tabular-nums;line-height:1.1}
.stat .l{font-size:.85rem;color:var(--ink);font-weight:600}
.stat .s{font-size:.75rem;color:var(--muted)}

/* ---------- Wage ladder ---------- */
.ladder{list-style:none;margin:0;padding:0;display:grid;gap:12px}
@media(min-width:720px){.ladder{grid-template-columns:repeat(3,1fr)}}
.rung{border:1px solid var(--line);background:#fff;padding:16px;display:flex;flex-direction:column;gap:4px;position:relative}
.rung[data-state="now"]{border-color:var(--link);box-shadow:inset 0 0 0 1px var(--link)}
.rung[data-state="goal"]{border-color:var(--ink);background:var(--bg-2)}
.rung .tag{font-size:.7rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.rung[data-state="now"] .tag{color:var(--link)}
.rung .name{font-weight:700}
.rung .pay{font-size:1.55rem;font-weight:800;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.rung .note{font-size:.8rem;color:var(--muted)}

/* ---------- Course cards ---------- */
.cards{display:grid;gap:20px}
@media(min-width:640px){.cards{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1000px){.cards{grid-template-columns:repeat(3,1fr)}}
.ccard{display:flex;flex-direction:column;gap:6px;text-decoration:none;color:var(--ink);border:1px solid var(--line-2);background:#fff;transition:box-shadow .12s}
.ccard:hover{box-shadow:var(--shadow-card)}
.thumb{aspect-ratio:16/9;display:flex;align-items:flex-end;justify-content:space-between;padding:14px;color:#fff;position:relative;overflow:hidden}
.thumb .glyph{font-family:var(--serif);font-size:5.5rem;font-weight:700;line-height:1;position:absolute;right:14px;top:-6px;opacity:.22}
.thumb .jp{font-size:.8rem;font-weight:600;opacity:.9}
.thumb[data-f="shokuhin"]{background:linear-gradient(135deg,#23845B,#5FC493)}
.thumb[data-f="seizo"]{background:linear-gradient(135deg,#1C1D1F,#5A5C60)}
.thumb[data-f="gaishoku"]{background:linear-gradient(135deg,#B4690E,#E49A3C)}
.ccard .body{padding:8px 12px 14px;display:flex;flex-direction:column;gap:5px}
.ccard .title{font-weight:700;font-size:1rem;line-height:1.3}
.ccard .by{font-size:.75rem;color:var(--muted)}
.ccard .meta{font-size:.75rem;color:var(--muted)}
.ccard .meta b{color:var(--ink)}
.price{display:flex;align-items:baseline;gap:8px;flex-wrap:wrap}
.price .amt{font-weight:800;font-size:1.15rem;font-variant-numeric:tabular-nums}
.price .was{text-decoration:line-through;color:var(--muted);font-size:.9rem;font-variant-numeric:tabular-nums}
.price.lg .amt{font-size:2rem;letter-spacing:-.02em}
.price.lg .was{font-size:1.05rem}

/* ---------- Course page: dark band + floating card ---------- */
.cband{background:var(--dark);color:var(--on-dark);padding-block:32px 36px}
.cband .crumb{font-size:.85rem;color:#C0C4CC;font-weight:600}
.cband .crumb a{color:#C0C4CC;text-decoration:none}
.cband h1{color:#fff}
.cband .sub{font-size:1.1rem;color:#fff;max-width:44rem}
.cband .meta{font-size:.85rem;color:var(--on-dark-muted);display:flex;flex-wrap:wrap;gap:6px 14px;align-items:center}
.cband .meta b{color:#fff}
.clayout{display:grid;gap:32px;align-items:start}
@media(min-width:1000px){
  .clayout{grid-template-columns:minmax(0,1fr) 340px;column-gap:48px}
  .cband .clayout{grid-template-columns:minmax(0,1fr) 340px}
  .cmain{max-width:46rem}
  .fcard{position:sticky;top:88px;margin-top:-190px}
}
.fcard{background:#fff;color:var(--ink);border:1px solid var(--line);box-shadow:var(--shadow-float);display:flex;flex-direction:column}
.fcard .preview{aspect-ratio:16/9;display:flex;flex-direction:column;justify-content:flex-end;padding:14px;color:#fff;position:relative;overflow:hidden}
.fcard .preview .glyph{font-family:var(--serif);font-size:6rem;font-weight:700;position:absolute;right:12px;top:-10px;opacity:.22;line-height:1}
.fcard .preview .k{font-size:.72rem;opacity:.85;font-weight:600}
.fcard .preview .v{font-size:1.5rem;font-weight:800;letter-spacing:-.02em;line-height:1.1}
.fcard .in{padding:18px 20px;display:flex;flex-direction:column;gap:12px}
.fcard .inc{list-style:none;margin:0;padding:0;display:grid;gap:6px;font-size:.88rem}
.fcard .inc li{display:flex;gap:8px;align-items:flex-start}
.fcard .inc li::before{content:"";flex:none;width:1.1em;height:1.1em;margin-top:.15em;background-color:var(--good);-webkit-mask:var(--ico-check) center/contain no-repeat;mask:var(--ico-check) center/contain no-repeat}
.fcard .guarantee{font-size:.75rem;color:var(--muted);text-align:center}

/* ---------- Icons (SVG line icons via mask; color = currentColor) ---------- */
.ico{display:inline-block;width:1em;height:1em;vertical-align:-.15em;flex:none;background-color:currentColor;-webkit-mask:var(--i) center/contain no-repeat;mask:var(--i) center/contain no-repeat}
.ico-lock{--i:var(--ico-lock)}.ico-check{--i:var(--ico-check)}.ico-warn{--i:var(--ico-warn);color:var(--warn)}.ico-yen{--i:var(--ico-yen)}

/* ---------- "What you'll learn" box ---------- */
.learn{border:1px solid var(--line);padding:20px 24px;display:flex;flex-direction:column;gap:14px}
.learn ul{list-style:none;margin:0;padding:0;display:grid;gap:10px 24px}
@media(min-width:720px){.learn ul{grid-template-columns:1fr 1fr}}
.learn li{display:flex;gap:10px;align-items:flex-start;font-size:.92rem}
.learn li::before{content:"";flex:none;width:1.1em;height:1.1em;margin-top:.2em;background-color:var(--ink);-webkit-mask:var(--ico-check) center/contain no-repeat;mask:var(--ico-check) center/contain no-repeat}

/* ---------- Curriculum accordion ---------- */
.curric{border:1px solid var(--line);display:flex;flex-direction:column}
.curric details{border-bottom:1px solid var(--line)}
.curric details:last-child{border-bottom:0}
.curric summary{cursor:pointer;list-style:none;display:flex;align-items:center;gap:12px;padding:14px 16px;background:var(--bg-2);font-weight:700;font-size:.95rem}
.curric summary::-webkit-details-marker{display:none}
.curric summary::before{content:"";width:8px;height:8px;border-right:2px solid var(--ink);border-bottom:2px solid var(--ink);transform:rotate(45deg);margin-top:-4px;transition:transform .15s;flex:none}
.curric details[open] summary::before{transform:rotate(-135deg);margin-top:4px}
.curric summary .n{margin-left:auto;font-size:.8rem;color:var(--muted);font-weight:500;white-space:nowrap}
.curric .lec{list-style:none;margin:0;padding:6px 16px 10px 36px;display:grid;gap:6px;font-size:.9rem}
.curric .lec li{display:flex;gap:10px;align-items:baseline}
.curric .lec li::before{content:"▪";color:var(--muted);font-size:.7rem}
.curric .lec .new{margin-left:auto}

/* ---------- Generic blocks ---------- */
.box{border:1px solid var(--line);padding:18px 20px;background:#fff}
.box-soft{background:var(--bg-2);padding:18px 20px}
.callout{border-left:4px solid var(--warn);background:var(--warn-bg);padding:12px 16px;font-size:.92rem}
.callout b{color:var(--warn)}
.todo{background:var(--badge-bg);color:var(--badge-ink);border:1px dashed var(--badge-ink);padding:12px 14px;font-size:.85rem}
.checks{list-style:none;margin:0;padding:0;display:grid;gap:9px}
.checks li{display:flex;gap:10px;align-items:flex-start;font-size:.93rem}
.checks li::before{content:"";flex:none;width:1.1em;height:1.1em;margin-top:.2em;background-color:var(--good);-webkit-mask:var(--ico-check) center/contain no-repeat;mask:var(--ico-check) center/contain no-repeat}
.grid-2{display:grid;gap:20px}@media(min-width:760px){.grid-2{grid-template-columns:1fr 1fr}}
.grid-3{display:grid;gap:20px}@media(min-width:900px){.grid-3{grid-template-columns:repeat(3,1fr)}}

/* ---------- Tables ---------- */
.tablewrap{overflow-x:auto;border:1px solid var(--line)}
table{border-collapse:collapse;width:100%;min-width:30rem;font-size:.9rem}
th,td{text-align:left;padding:10px 14px;border-bottom:1px solid var(--line-2)}
th{font-size:.78rem;letter-spacing:.04em;text-transform:uppercase;color:var(--muted);background:var(--bg-2);font-weight:700}
tbody tr:last-child td{border-bottom:0}
td.num{text-align:right;font-variant-numeric:tabular-nums}

/* ---------- Diagnostic tool ---------- */
.tool{border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-card)}
.tool-head{padding:18px 24px;border-bottom:1px solid var(--line);display:flex;align-items:baseline;justify-content:space-between;gap:12px;flex-wrap:wrap}
.tool-body{padding:24px}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:18px}
.field>label{font-weight:700;font-size:.93rem}
.field .hint{font-size:.78rem;color:var(--muted)}
.opts{display:grid;gap:8px;grid-template-columns:repeat(auto-fit,minmax(9.5rem,1fr))}
.opt{position:relative}
.opt input{position:absolute;inset:0;opacity:0;cursor:pointer;margin:0}
.opt span{display:block;text-align:center;padding:11px 10px;border:1px solid var(--ink);border-radius:var(--radius);background:#fff;font-size:.88rem;font-weight:700;cursor:pointer;line-height:1.3}
.opt span small{display:block;font-weight:500;color:var(--muted);font-size:.72rem}
.opt input:checked+span{background:var(--ink);color:#fff}
.opt input:checked+span small{color:#CFD3D8}
.opt input:focus-visible+span{outline:2px solid var(--link);outline-offset:2px}
input[type=number],input[type=text],input[type=email],select,textarea{font:inherit;color:var(--ink);background:#fff;border:1px solid var(--ink);border-radius:var(--radius);padding:12px 14px;width:100%}
input::placeholder{color:var(--muted)}
.result{border-top:1px solid var(--line);background:var(--bg-2);padding:24px}
.route{list-style:none;margin:0;padding:0;display:grid;gap:10px;counter-reset:s}
.route li{counter-increment:s;background:#fff;border:1px solid var(--line);padding:14px 16px 14px 48px;position:relative}
.route li::before{content:counter(s);position:absolute;left:14px;top:14px;width:22px;height:22px;border-radius:50%;background:var(--ink);color:#fff;display:grid;place-items:center;font-size:.75rem;font-weight:800}
.route .t{font-weight:700;display:block;margin-bottom:2px}
.route .d{font-size:.87rem;color:var(--muted)}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;list-style:none;padding:16px 0;font-weight:700;display:flex;justify-content:space-between;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-weight:400;color:var(--muted)}
.faq details[open] summary::after{content:"−"}
.faq .a{padding:0 0 16px;color:var(--ink);font-size:.93rem;max-width:44rem}

/* ---------- Footer ---------- */
.ftr{background:var(--dark);color:#fff;padding-block:32px;margin-top:40px}
.ftr a{color:#fff;text-decoration:none;font-size:.85rem}
.ftr a:hover{text-decoration:underline}
.ftr .links{display:flex;flex-wrap:wrap;gap:8px 20px}
.ftr .src{color:#C0C4CC}
@media(min-width:1000px){.clayout>.cmain{grid-column:1;grid-row:1}.clayout>.fcard{grid-column:2;grid-row:1}}
/* narrow header: keep logo + CTA on one line */
@media(max-width:600px){
  .hdr .bar{gap:8px;min-height:60px}
  .logo{font-size:.95rem;gap:6px}.logo .mark{width:26px;height:26px;font-size:.68rem}
  .hdr .cta{font-size:.78rem;padding:0 10px;min-height:36px}
}
@media(max-width:600px){.hdr-login{display:none}}