/* 315tools hub + legal pages — follows claude/315tools-design-guide.md */
:root{
  --paper:#FFFFFF;--sheet:#FFFFFF;--soft:#F4F6FA;--ink:#0B0B0C;--muted:#5E6470;--rule:#1B1B1D;
  --accent:#1F4FD8;--accent-ink:#FFFFFF;--accent-soft:#EAF0FE;--accent-hover:#D6E2FD;--ok:#4ADE80;
  --body:"Noto Sans","Noto Sans KR","Noto Sans JP","Apple SD Gothic Neo","Malgun Gothic","Hiragino Sans",system-ui,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  color-scheme:light;
}
:root:lang(ja){--body:"Noto Sans","Noto Sans JP","Noto Sans KR","Hiragino Sans","Yu Gothic",system-ui,sans-serif}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --paper:#0F1217;--sheet:#161B22;--soft:#1D242E;--ink:#E9ECF1;--muted:#A0A8B4;--rule:#8E98A6;
  --accent:#3D6BF2;--accent-soft:#1A2744;--accent-hover:#22335A;color-scheme:dark}}
:root[data-theme="dark"]{
  --paper:#0F1217;--sheet:#161B22;--soft:#1D242E;--ink:#E9ECF1;--muted:#A0A8B4;--rule:#8E98A6;
  --accent:#3D6BF2;--accent-soft:#1A2744;--accent-hover:#22335A;color-scheme:dark}

*{box-sizing:border-box}
html,body{margin:0}
body{background:var(--paper);color:var(--ink);font-family:var(--body);font-size:16.5px;line-height:1.55;-webkit-font-smoothing:antialiased}
.frame{max-width:920px;margin:0 auto;padding:0 16px 40px}
h1,h2,h3{margin:0;text-wrap:balance;letter-spacing:-.005em}
a{color:var(--accent)}
button,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.ic{width:18px;height:18px;flex:none;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

/* header */
.top{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:18px 0 14px}
.brand{display:flex;align-items:baseline;gap:10px;text-decoration:none;color:var(--ink)}
.brand b{font-weight:800;font-size:24px;letter-spacing:-.01em}
.brand b i{font-style:normal;color:var(--accent)}
.brand span{font:600 12px var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.top-right{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.local{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--muted)}
.local .ic{width:14px;height:14px}
.mode{display:inline-flex;align-items:center;gap:6px;border:2px solid var(--rule);background:var(--sheet);color:var(--ink);border-radius:8px;padding:5px 10px;font-size:15px;font-weight:500;cursor:pointer}
.mode:hover{border-color:var(--accent);color:var(--accent)}
.mode .ic{width:16px;height:16px}
.lang{display:flex;align-items:center;gap:6px}
.lang .ic{width:16px;height:16px;color:var(--muted)}
.lang select{border:2px solid var(--rule);background:var(--sheet);border-radius:8px;padding:6px 8px;font-size:15px;cursor:pointer}

/* promise box — white text in both modes */
.shield{background:var(--accent);color:#FFFFFF;border-radius:18px;padding:26px 22px;margin:6px 0 18px;display:grid;gap:18px}
.shield h1{font-size:clamp(26px,4.4vw,37px);font-weight:800;line-height:1.15;color:#FFFFFF}
.shield p{margin:0;max-width:62ch;font-size:17px;opacity:.9}
.lockchip{justify-self:start;display:inline-flex;align-items:center;gap:8px;font:13px var(--mono);letter-spacing:.03em;border:1px solid rgba(255,255,255,.35);border-radius:999px;padding:4px 10px 4px 8px}
.lockchip i{width:8px;height:8px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px rgba(74,222,128,.35)}
.proofs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;list-style:none;margin:0;padding:0}
.proofs li{border-top:1px solid rgba(255,255,255,.3);padding-top:12px;display:grid;gap:4px;align-content:start;min-width:0}
.proofs b{font-weight:600}
.proofs span{font-size:15px;opacity:.85}
@media (max-width:640px){.proofs{grid-template-columns:1fr}}

.ad{background:var(--soft);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;border:2px dashed var(--rule);border-radius:10px;color:var(--muted);min-height:90px;margin:8px auto 22px;font-size:12px;letter-spacing:.08em;text-transform:uppercase;max-width:728px}
.ad small{font-family:var(--mono);letter-spacing:0;text-transform:none;opacity:.7}
.ad.mid{min-height:250px;max-width:336px;margin-top:26px}

/* tool cards */
.sec-title{font-size:26.5px;font-weight:800}
.lead{color:var(--muted);margin:6px 0 16px;max-width:62ch}
.tools{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
@media (max-width:760px){.tools{grid-template-columns:1fr}}
.tool{display:flex;flex-direction:column;gap:12px;border:2px solid var(--rule);border-radius:16px;background:var(--sheet);padding:20px;text-decoration:none;color:var(--ink);min-width:0;transition:border-color .15s}
.tool:hover{border-color:var(--accent)}
.tool .icbox{width:52px;height:52px;border-radius:12px;background:var(--accent-soft);display:grid;place-items:center;color:var(--accent)}
.tool .icbox .ic{width:28px;height:28px}
.tool h3{font-size:21px;font-weight:800}
.tool p{margin:0;color:var(--muted);font-size:15px}
.tool ul{margin:0;padding:0;list-style:none;display:flex;flex-wrap:wrap;gap:6px}
.tool li{font:13px var(--mono);background:var(--accent-soft);border-radius:6px;padding:2px 8px}
.tool .go{margin-top:auto;align-self:flex-start;display:inline-flex;align-items:center;gap:6px;background:var(--accent);color:#FFFFFF;border-radius:10px;padding:10px 18px;font-weight:600}
.tool .go .ic{width:16px;height:16px}
.tool .url{font:13px var(--mono);color:var(--muted)}

.why{display:grid;gap:12px;margin:34px 0;padding:26px 0;border-top:2px solid var(--rule);border-bottom:2px solid var(--rule)}
.why p{margin:0;font-size:18px;line-height:1.7;max-width:62ch}
.pledge{list-style:none;margin:4px 0 0;padding:0;display:flex;gap:8px;flex-wrap:wrap}
.pledge li{display:inline-flex;align-items:center;gap:7px;font-size:15px;font-weight:500;background:var(--accent-soft);border-radius:999px;padding:6px 12px 6px 8px}
.pledge .ic{width:16px;height:16px;color:var(--accent)}

.faq h2{margin-bottom:10px}
.faq details{border-top:2px solid var(--rule);padding:12px 0}
.faq details:last-child{border-bottom:2px solid var(--rule)}
.faq summary{cursor:pointer;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--mono);color:var(--muted)}
.faq details[open] summary::after{content:"−"}
.faq p{margin:8px 0 0;color:var(--muted);max-width:68ch}

/* legal pages */
.doc{border:2px solid var(--rule);border-radius:16px;background:var(--sheet);padding:24px clamp(16px,4vw,32px);display:grid;gap:22px}
.doc h1{font-size:clamp(31px,5vw,44px);font-weight:800;line-height:1.1}
.doc .date{font:13px var(--mono);color:var(--muted);margin-top:6px}
.doc .sum{background:var(--accent-soft);border-radius:12px;padding:14px 16px;margin:0}
.doc h2{font-size:20px;font-weight:800;margin-bottom:6px}
.doc section p,.doc section li{margin:0 0 8px;max-width:72ch}
.doc section ul{margin:0;padding-left:20px}
.back{display:inline-flex;align-items:center;gap:6px;margin:4px 0 16px;font-weight:600;text-decoration:none}

footer{border-top:2px solid var(--rule);margin-top:34px;padding-top:16px;font-size:14.5px;color:var(--muted);display:flex;gap:8px 18px;flex-wrap:wrap}
footer a{color:var(--muted)}
footer a:hover{color:var(--accent)}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}
:lang(ko) body{word-break:keep-all;overflow-wrap:anywhere}