@charset "utf-8";
/* 별가람치과 회원 전용 게시판: 치료 사례(bgr_case) · 감사 편지(bgr_letter) — 2026-10
   메인 페이지의 치료 사례 카드도 이 파일의 전후 비교(.bcmp) 모양을 함께 씁니다. */
.bgb,.bcmp,.bgb-ph{
  --teal:var(--primary,#239cad); --teal-dark:var(--primary-dark,#0a616d); --teal-light:var(--primary-light,#d4ebee);
  --ink:#11232c; --ink-2:#51646c; --ink-3:#8a9aa1; --line:#dbe6e9; --mist:#f1f6f7; --night:#0e2230; --glow:#8cf0ff;
  --ease:cubic-bezier(.2,.75,.15,1);
}
.bgb{max-width:1200px;margin:0 auto;padding:44px 24px 96px;color:var(--ink);font-size:16px;line-height:1.6;letter-spacing:-.02em;word-break:keep-all;text-align:left}
.bgb *,.bgb *::before,.bgb *::after,.bcmp *,.bcmp *::before,.bcmp *::after{box-sizing:border-box}
.bgb a{color:inherit;text-decoration:none}
.bgb h2,.bgb h3,.bgb p,.bgb ul,.bgb ol,.bgb dl,.bgb dd,.bgb figure{margin:0}
.bgb ul,.bgb ol{list-style:none;padding:0}
.bgb svg,.bcmp svg{display:block;width:100%;height:100%}
.bgb :focus-visible{outline:2px solid var(--teal);outline-offset:3px}

/* 머리말 */
.bgb-head{display:flex;justify-content:space-between;align-items:flex-end;gap:20px 40px;flex-wrap:wrap;margin-bottom:28px}
.bgb-eb{font-size:12px;font-weight:700;letter-spacing:.36em;text-transform:uppercase;color:var(--teal)}
.bgb-head h2{margin-top:10px;font-size:clamp(28px,3vw,40px);font-weight:300;line-height:1.3;letter-spacing:-.045em}
.bgb-head h2 b{font-weight:700;color:var(--teal-dark)}
.bgb-lead{margin-top:10px !important;color:var(--ink-2);max-width:36em}
.bgb-promise{display:flex;flex-wrap:wrap;gap:8px}
.bgb-promise li{display:inline-flex;align-items:center;gap:6px;font-size:13.5px;font-weight:600;color:var(--teal-dark);background:var(--teal-light);padding:6px 12px;border-radius:999px}
.bgb-promise li i{width:14px;height:14px}

/* 분류 탭 */
.bgb-cats{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:26px}
.bgb-cats a{display:inline-flex;align-items:center;gap:6px;padding:9px 18px;border:1px solid var(--line);border-radius:999px;background:#fff;font-size:15px;font-weight:500;color:var(--ink-2);transition:border-color .2s,color .2s,background .2s}
.bgb-cats a:hover{border-color:var(--teal);color:var(--teal-dark)}
.bgb-cats a.on{background:var(--teal-dark);border-color:var(--teal-dark);color:#fff;font-weight:700}

/* 비회원 안내 */
.bgb-gate{display:flex;align-items:center;gap:18px 28px;flex-wrap:wrap;margin-bottom:28px;padding:22px 26px;border-radius:14px;background:linear-gradient(120deg,var(--night) 0%,#14394a 100%);color:#fff}
.bgb-gate .ic{flex:0 0 48px;width:48px;height:48px;padding:12px;border-radius:50%;border:1px solid rgba(255,255,255,.4);color:var(--glow)}
.bgb-gate .tx{flex:1 1 300px}
.bgb-gate strong{display:block;font-size:18px}
.bgb-gate p{font-size:14.5px;color:rgba(255,255,255,.75)}
.bgb-gate .btns{display:flex;gap:8px}
.bgb-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;border-radius:999px;border:1px solid transparent;font:inherit;font-size:15px;font-weight:700;cursor:pointer;transition:background .25s,color .25s,border-color .25s;white-space:nowrap}
.bgb-btn.solid{background:#fff;color:var(--ink)}
.bgb-btn.solid:hover{background:var(--glow)}
.bgb-btn.line{border-color:rgba(255,255,255,.55);color:#fff;background:none}
.bgb-btn.line:hover{background:rgba(255,255,255,.12)}
.bgb-btn.dark{background:var(--teal-dark);color:#fff}
.bgb-btn.dark:hover{background:var(--ink)}
.bgb-btn.ghost{border-color:var(--line);background:#fff;color:var(--ink)}
.bgb-btn.ghost:hover{border-color:var(--teal);color:var(--teal-dark)}
.bgb-btn i{width:16px;height:16px}

/* 관리자 버튼 줄 */
.bgb-admin{display:flex;justify-content:flex-end;gap:8px;margin-bottom:16px}
.bgb-admin .bgb-btn{height:40px;padding:0 16px;font-size:14px}

/* ---------- 전후 비교 (목록 · 본문 · 메인 공통) ---------- */
.bcmp{--x:50%;position:relative}
.bcmp-media{display:block;position:relative;width:100%;aspect-ratio:4/3;overflow:hidden;border-radius:10px;background:#0b1a24;isolation:isolate;user-select:none;-webkit-user-select:none}
.bcmp-media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;pointer-events:none}
.bcmp-media .a{clip-path:inset(0 0 0 var(--x))}
.bcmp-line{position:absolute;top:0;bottom:0;left:var(--x);width:2px;margin-left:-1px;background:#fff;box-shadow:0 0 12px rgba(0,0,0,.35);z-index:2;pointer-events:none}
.bcmp-line::after{content:"";position:absolute;top:50%;left:50%;width:40px;height:40px;margin:-20px 0 0 -20px;border-radius:50%;background:#fff;box-shadow:0 4px 16px rgba(0,0,0,.3);background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M9 7l-5 5 5 5M15 7l5 5-5 5' fill='none' stroke='%230a616d' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");background-size:22px;background-position:center;background-repeat:no-repeat}
.bcmp-lb{position:absolute;top:12px;z-index:3;font-size:11px;font-weight:700;letter-spacing:.22em;color:#fff;background:rgba(10,24,34,.55);padding:4px 10px;border-radius:999px;pointer-events:none}
.bcmp-lb.l{left:12px}.bcmp-lb.r{right:12px}
.bcmp-lb em{font-style:normal;font-weight:600;letter-spacing:.02em;margin-left:4px;opacity:.85}
/* 비회원(사진 비공개일 때): 아주 작게 줄인 사진을 늘려 흐리게 */
.bcmp-blur{position:absolute;inset:0;display:flex;overflow:hidden}
.bcmp-blur img{position:static;flex:1 1 0;width:50%;height:100%;object-fit:cover;filter:blur(10px) saturate(.9);transform:scale(1.15)}
.bcmp-blur.one img{width:100%}
.bgb-ph.over{background:rgba(9,22,31,.45)}
.bgb-ph.over::before,.bgb-ph.over::after{display:none}
.bcmp-cap{position:absolute;right:14px;bottom:12px;z-index:3;font-size:15px;font-weight:700;color:#fff;text-shadow:0 1px 10px rgba(0,0,0,.55);pointer-events:none}
.bcmp-wm{position:absolute;left:14px;bottom:12px;z-index:3;font-size:11px;font-weight:700;letter-spacing:.3em;color:rgba(255,255,255,.55);pointer-events:none}
.bcmp-drag{position:absolute;inset:0;z-index:4;cursor:ew-resize;touch-action:pan-y}
/* 아래 조절 막대: before ━━●━━ after */
.bcmp-ctl{display:flex;align-items:center;gap:12px;margin-top:12px;font-size:14px;color:var(--ink-3)}
.bcmp-ctl span{flex:0 0 auto}
.bcmp-ctl input{flex:1 1 auto;-webkit-appearance:none;appearance:none;height:28px;margin:0;background:transparent;cursor:pointer}
.bcmp-ctl input::-webkit-slider-runnable-track{height:2px;background:var(--line);border-radius:2px}
.bcmp-ctl input::-moz-range-track{height:2px;background:var(--line);border-radius:2px}
.bcmp-ctl input::-webkit-slider-thumb{-webkit-appearance:none;width:46px;height:26px;margin-top:-12px;border-radius:999px;background:var(--teal-light) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M12 5v14M9 9l-3 3 3 3M15 9l3 3-3 3' fill='none' stroke='%230a616d' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/18px no-repeat;border:0;box-shadow:0 2px 8px rgba(14,34,48,.15);transition:background-color .2s}
.bcmp-ctl input::-moz-range-thumb{width:46px;height:26px;border-radius:999px;background:var(--teal-light) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M12 5v14M9 9l-3 3 3 3M15 9l3 3-3 3' fill='none' stroke='%230a616d' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/18px no-repeat;border:0}
.bcmp-ctl input:hover::-webkit-slider-thumb{background-color:#bfe6ec}
.bcmp-ctl input:focus-visible{outline:2px solid var(--teal);outline-offset:2px;border-radius:999px}
.bcmp-ctl.off{opacity:.5}
.bcmp-ctl.off input{cursor:not-allowed}

/* 비회원 자리 그림 (실제 사진은 보내지 않음) */
.bgb-ph{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;padding:20px;text-align:center;color:#fff;background:radial-gradient(120% 90% at 30% 20%,#1d4a5b 0%,#0e2230 60%,#09161f 100%);overflow:hidden}
.bgb-ph::before{content:"";position:absolute;left:8%;right:8%;top:30%;height:46%;border-radius:50% 50% 46% 46%/70% 70% 30% 30%;border:2px solid rgba(140,240,255,.13);border-bottom:0;background:repeating-linear-gradient(90deg,rgba(140,240,255,.08) 0 2px,transparent 2px 9%);-webkit-mask:linear-gradient(180deg,#000 0%,transparent 85%);mask:linear-gradient(180deg,#000 0%,transparent 85%)}
.bgb-ph::after{content:"";position:absolute;left:50%;top:0;bottom:0;width:1px;background:rgba(255,255,255,.12)}
.bgb-ph .ic{position:relative;z-index:1;width:44px;height:44px;padding:11px;border-radius:50%;border:1px solid rgba(255,255,255,.45);color:var(--glow);background:rgba(10,24,34,.35)}
.bgb-ph strong{position:relative;z-index:1;font-size:16px;font-weight:700}
.bgb-ph small{position:relative;z-index:1;font-size:13px;color:rgba(255,255,255,.7)}
.bgb-ph .bgb-btn{position:relative;z-index:1;height:38px;margin-top:6px;padding:0 18px;font-size:14px}

/* ---------- 치료 사례 목록 ---------- */
.bgb-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:36px 28px}
.bgb-card{min-width:0}
.bgb-card .bcmp-media{transition:box-shadow .4s var(--ease),transform .4s var(--ease)}
.bgb-card:hover .bcmp-media{box-shadow:0 22px 50px -28px rgba(14,34,48,.6);transform:translateY(-2px)}
.bgb-card-body{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;margin-top:14px}
.bgb-card .tag{display:inline-block;font-size:12.5px;font-weight:700;color:var(--teal-dark);background:var(--teal-light);padding:2px 10px;border-radius:999px}
.bgb-card h3{margin-top:8px;font-size:19px;font-weight:700;line-height:1.4;letter-spacing:-.035em}
.bgb-card h3 a:hover{color:var(--teal-dark)}
.bgb-card .meta{margin-top:4px;display:flex;flex-wrap:wrap;gap:4px 14px;font-size:14px;color:var(--ink-3)}
.bgb-card .meta b{font-weight:500;color:var(--ink-2)}
.bgb-go{flex:0 0 44px;width:44px;height:44px;padding:12px;border:1px solid var(--line);border-radius:50%;color:var(--ink);transition:background .25s,color .25s,border-color .25s,transform .35s var(--ease)}
.bgb-card:hover .bgb-go{background:var(--teal-dark);border-color:var(--teal-dark);color:#fff;transform:translateX(3px)}
.bgb-empty{grid-column:1/-1;padding:70px 20px;text-align:center;color:var(--ink-2);border:1px dashed var(--line);border-radius:14px;background:var(--mist)}
.bgb-empty strong{display:block;font-size:18px;color:var(--ink);margin-bottom:4px}

/* 쪽 번호 (그누보드 기본 출력) */
.bgb .pg_wrap{margin-top:44px;text-align:center}
.bgb .pg{display:inline-flex;gap:6px}
.bgb .pg_page,.bgb .pg_current{display:inline-grid;place-items:center;min-width:40px;height:40px;padding:0 8px;border-radius:999px;border:1px solid var(--line);background:#fff;font-size:15px;color:var(--ink-2)}
.bgb .pg_current{background:var(--teal-dark);border-color:var(--teal-dark);color:#fff;font-weight:700}
.bgb .pg_page:hover{border-color:var(--teal);color:var(--teal-dark)}

/* ---------- 치료 사례 본문 ---------- */
.bgb-view{max-width:980px}
.bgb-view-head .tag{display:inline-block;font-size:13px;font-weight:700;color:var(--teal-dark);background:var(--teal-light);padding:3px 12px;border-radius:999px}
.bgb-view-head h2{margin-top:12px;font-size:clamp(26px,3vw,36px);font-weight:700;line-height:1.3;letter-spacing:-.045em}
.bgb-facts{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;margin:22px 0 26px;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--line)}
.bgb-facts div{background:#fff;padding:14px 18px}
.bgb-facts dt{font-size:12.5px;color:var(--ink-3)}
.bgb-facts dd{margin-top:2px;font-size:16px;font-weight:700;font-variant-numeric:tabular-nums}
.bgb-view .bcmp-media{aspect-ratio:16/10;border-radius:14px}
.bgb-mode{display:flex;justify-content:flex-end;gap:6px;margin-bottom:10px}
.bgb-mode button{height:36px;padding:0 14px;border:1px solid var(--line);border-radius:999px;background:#fff;font:inherit;font-size:13.5px;color:var(--ink-2);cursor:pointer}
.bgb-mode button[aria-pressed=true]{background:var(--ink);border-color:var(--ink);color:#fff}
.bgb-side{display:none;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.bgb-side figure{position:relative;border-radius:12px;overflow:hidden;aspect-ratio:4/3;background:#0b1a24}
.bgb-side img{width:100%;height:100%;object-fit:cover}
.bgb-side figcaption{position:absolute;left:12px;top:12px;font-size:11px;font-weight:700;letter-spacing:.22em;color:#fff;background:rgba(10,24,34,.55);padding:4px 10px;border-radius:999px}
.bgb-view.is-side .bcmp{display:none}
.bgb-view.is-side .bgb-side{display:grid}
.bgb-more{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:20px}
.bgb-more a{display:block;border-radius:10px;overflow:hidden;aspect-ratio:4/3;background:var(--mist)}
.bgb-more img{width:100%;height:100%;object-fit:cover;transition:transform .8s var(--ease)}
.bgb-more a:hover img{transform:scale(1.04)}
.bgb-con{margin-top:34px;font-size:17px;line-height:1.85;color:var(--ink)}
.bgb-con img{max-width:100%;height:auto;border-radius:10px}
.bgb-notice{margin-top:34px;padding:20px 22px;border-radius:12px;background:var(--mist);font-size:14.5px;color:var(--ink-2)}
.bgb-notice strong{display:block;margin-bottom:6px;font-size:15px;color:var(--ink)}
.bgb-notice li{position:relative;padding-left:14px}
.bgb-notice li::before{content:"";position:absolute;left:2px;top:.66em;width:4px;height:4px;border-radius:50%;background:var(--teal)}
.bgb-nav{display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);gap:12px;align-items:center;margin-top:40px;padding-top:24px;border-top:1px solid var(--line)}
.bgb-nav a.pn{display:flex;flex-direction:column;gap:2px;font-size:15px;min-width:0}
.bgb-nav a.pn small{font-size:12.5px;color:var(--ink-3)}
.bgb-nav a.pn span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.bgb-nav a.pn:hover span{color:var(--teal-dark)}
.bgb-nav a.next{text-align:right}
.bgb-nav .list{justify-self:center}

/* ---------- 감사 편지 ---------- */
.bgb-letters{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:34px 28px;align-items:start;padding-top:10px}
.bgb-letter{display:block;min-width:0}
.bgb-letter .paper{position:relative;padding:10px;background:#fff;border-radius:4px;box-shadow:0 1px 2px rgba(14,34,48,.08),0 18px 40px -22px rgba(14,34,48,.45);transform:rotate(var(--r,0deg));transition:transform .5s var(--ease),box-shadow .5s var(--ease)}
.bgb-letter:nth-child(3n+1) .paper{--r:-1.2deg}
.bgb-letter:nth-child(3n+2) .paper{--r:.8deg}
.bgb-letter:nth-child(3n) .paper{--r:-.4deg}
.bgb-letter:hover .paper{transform:rotate(0) translateY(-4px);box-shadow:0 1px 2px rgba(14,34,48,.08),0 28px 50px -24px rgba(14,34,48,.55)}
.bgb-letter img{display:block;width:100%;height:auto;border-radius:2px}
.bgb-letter .paper::before{content:"";position:absolute;top:-9px;left:50%;width:70px;height:20px;margin-left:-35px;background:rgba(212,235,238,.85);transform:rotate(-2deg);box-shadow:0 1px 2px rgba(0,0,0,.06)}
.bgb-letter h3{margin-top:14px;font-size:16.5px;font-weight:700}
.bgb-letter time{font-size:13.5px;color:var(--ink-3)}
/* 비회원: 흐린 편지지 */
.bgb-paper-ph{position:relative;aspect-ratio:3/4;border-radius:2px;overflow:hidden;background:#fbfaf6 repeating-linear-gradient(180deg,transparent 0 30px,rgba(35,156,173,.16) 30px 31px)}
.bgb-paper-ph::before{content:"";position:absolute;left:12%;right:14%;top:12%;bottom:16%;background:repeating-linear-gradient(180deg,transparent 0 12px,rgba(30,50,60,.55) 12px 15px,transparent 15px 31px);filter:blur(4px);opacity:.55;-webkit-mask:linear-gradient(90deg,#000 0 70%,transparent 100%);mask:linear-gradient(90deg,#000 0 70%,transparent 100%)}
.bgb-paper-ph .lock{position:absolute;left:50%;top:50%;width:52px;height:52px;margin:-26px 0 0 -26px;padding:14px;border-radius:50%;background:rgba(14,34,48,.78);color:var(--glow)}
/* 비회원: 실제 편지를 36px로 줄여 흐리게 (있다는 것만 보이고 글은 못 읽음) */
.bgb-paper-blur{position:relative;display:block;aspect-ratio:3/4;overflow:hidden;border-radius:2px;background:#f6f3ec}
.bgb-letter .bgb-paper-blur img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:blur(7px) saturate(.85) brightness(1.03);transform:scale(1.12)}
.bgb-paper-blur .lock{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);display:flex;flex-direction:column;align-items:center;gap:8px;width:max-content;max-width:86%;color:#fff;text-align:center}
.bgb-paper-blur .lock svg{width:46px;height:46px;padding:12px;border-radius:50%;background:rgba(14,34,48,.78);color:var(--glow)}
.bgb-paper-blur .lock b{padding:5px 11px;border-radius:999px;background:rgba(14,34,48,.72);font-size:13px;font-weight:600}
.bgb-letters.is-locked .bgb-letter h3{color:var(--ink-2)}
.bgb-lview{max-width:880px}
.bgb-lview .sheet{position:relative;margin-top:26px;padding:14px;background:#fff;border-radius:6px;box-shadow:0 1px 2px rgba(14,34,48,.08),0 30px 60px -30px rgba(14,34,48,.45)}
.bgb-lview .sheet img{display:block;width:100%;height:auto}
.bgb-lview .sheet+.sheet{margin-top:22px}
.bgb-lview .zoom{position:absolute;right:24px;bottom:24px;display:inline-flex;align-items:center;gap:6px;height:38px;padding:0 14px;border-radius:999px;background:rgba(14,34,48,.78);color:#fff;font-size:13.5px}
.bgb-tr{margin-top:28px;padding:24px 26px;border-left:3px solid var(--teal);background:var(--mist);border-radius:0 12px 12px 0;font-size:17px;line-height:1.9}
.bgb-tr small{display:block;margin-bottom:6px;font-size:12.5px;font-weight:700;letter-spacing:.08em;color:var(--teal)}

/* ---------- 글쓰기 (관리자) ---------- */
.bgb-write{max-width:880px}
.bgb-write h2{font-size:28px;font-weight:700;letter-spacing:-.04em}
.bgb-write .sub{margin-top:6px !important;color:var(--ink-2)}
.bgb-wf{margin-top:24px;display:grid;gap:18px}
.bgb-wf .row>label,.bgb-wf .lbl{display:block;margin-bottom:6px;font-size:14.5px;font-weight:700}
.bgb-wf .row>label small,.bgb-wf .lbl small{font-weight:400;color:var(--ink-3);margin-left:6px}
.bgb-wf .frm_input,.bgb-wf select{width:100%;height:50px;padding:0 14px;border:1px solid #cfdcdf;border-radius:10px;background:#fff;font:inherit;font-size:16px}
.bgb-wf .frm_input:focus,.bgb-wf select:focus{outline:0;border-color:var(--teal);box-shadow:0 0 0 4px rgba(35,156,173,.14)}
.bgb-wf .cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.bgb-wf .req{font-style:normal;font-size:11.5px;font-weight:700;color:#d1503f;margin-left:4px}
.bgb-wf .hint{font-size:13.5px;color:var(--ink-2);background:var(--mist);border-radius:10px;padding:12px 14px;line-height:1.5}
.bgb-card .side{margin-top:6px !important;font-size:13px;line-height:1.5;color:var(--ink-3)}
.bgb-law{margin-top:30px !important;padding-top:16px;border-top:1px solid var(--line);font-size:13px;line-height:1.7;color:var(--ink-3)}
.bgb-files{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.bgb-file{padding:14px;border:1px dashed #b9cdd2;border-radius:12px;background:#fafcfc}
.bgb-file b{display:block;font-size:14.5px;margin-bottom:8px}
.bgb-file b em{font-style:normal;font-size:12px;font-weight:700;color:#fff;background:var(--teal-dark);padding:1px 8px;border-radius:999px;margin-right:6px}
.bgb-file input[type=file]{width:100%;font-size:14px}
.bgb-file .del{display:block;margin-top:8px;font-size:13px;color:var(--ink-2)}
.bgb-consent{display:flex;gap:10px;align-items:flex-start;padding:16px 18px;border-radius:12px;background:#fff7e8;border:1px solid #f2d9a6;font-size:14.5px;line-height:1.6;cursor:pointer}
.bgb-consent input{width:20px;height:20px;margin-top:2px;flex:0 0 20px;accent-color:var(--teal-dark)}
.bgb-wbtns{display:flex;justify-content:flex-end;gap:10px;margin-top:8px}

/* ---------- 반응형 ---------- */
@media (max-width:860px){
  .bgb{padding:40px 16px 64px}
  .bgb-grid{grid-template-columns:minmax(0,1fr);gap:30px}
  .bgb-facts{grid-template-columns:repeat(2,minmax(0,1fr))}
  .bgb-wf .cols,.bgb-files{grid-template-columns:minmax(0,1fr)}
  .bgb-more{grid-template-columns:repeat(2,minmax(0,1fr))}
  .bgb-gate{padding:18px}
  .bgb-gate .btns{width:100%}
  .bgb-gate .btns .bgb-btn{flex:1 1 0}
  .bgb-letters{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px 16px}
  .bgb-nav{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .bgb-nav .list{grid-column:1/-1;grid-row:2}
}
@media (prefers-reduced-motion:reduce){
  .bgb *,.bcmp *{transition:none !important;animation:none !important}
}

/* ---------- 치과 상식 Q&A (2026-10-13) ---------- */
.bgb-qa-badge{font-size:13px;font-weight:700;color:var(--teal-dark);border:1px solid var(--teal);border-radius:999px;padding:5px 14px;white-space:nowrap}
.bgb-qlist{border-top:2px solid var(--ink)}
.bgb-q{border-bottom:1px solid var(--line)}
.bgb-q summary{list-style:none;cursor:pointer;display:grid;grid-template-columns:34px minmax(0,1fr) 26px;gap:12px;align-items:start;padding:22px 4px}
.bgb-q summary::-webkit-details-marker{display:none}
.bgb-q .q{font-size:20px;font-weight:800;line-height:1.35;color:var(--teal)}
.bgb-q .tt{font-size:18px;font-weight:600;line-height:1.5;letter-spacing:-.03em}
.bgb-q .tt .tag{display:inline-block;margin-left:6px;vertical-align:2px;font-style:normal;font-size:12px;font-weight:700;color:var(--teal-dark);background:var(--teal-light);padding:1px 9px;border-radius:999px}
.bgb-q summary:hover .tt{color:var(--teal-dark)}
.bgb-q .pm{width:26px;height:26px;padding:4px;color:var(--ink-3);transition:transform .4s var(--ease),color .3s}
.bgb-q[open] .pm{transform:rotate(45deg);color:var(--teal)}
.bgb-q .a{display:grid;grid-template-columns:34px minmax(0,1fr);gap:12px;padding:0 4px 26px}
.bgb-q .a .q{color:var(--ink-3)}
.bgb-q .a p{font-size:16px;line-height:1.85;color:var(--ink-2)}
.bgb-q .go{display:inline-flex;align-items:center;gap:6px;margin-top:12px;font-size:14.5px;font-weight:600;color:var(--teal-dark)}
.bgb-q .go i{width:16px;height:16px;transition:transform .4s var(--ease)}
.bgb-q .go:hover i{transform:translateX(4px)}
.bgb-qa .bgb-empty{margin-top:24px}
.bgb-qview{max-width:880px}
.bgb-qview h2 .q{color:var(--teal)}
.bgb-answer{margin-top:28px;padding:26px 28px;border-radius:16px;background:var(--mist)}
.bgb-answer .who{display:flex;align-items:center;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.bgb-answer .who .q{font-size:26px;font-weight:800;color:var(--teal)}
.bgb-answer .who span{font-size:14px;color:var(--ink-3)}
.bgb-answer .who strong{display:block;font-size:16px;color:var(--ink)}
.bgb-answer .bgb-con{margin-top:18px}
@media (max-width:750px){
  .bgb-q summary{grid-template-columns:26px minmax(0,1fr) 22px;gap:10px;padding:18px 0}
  .bgb-q .q{font-size:18px}
  .bgb-q .tt{font-size:16.5px}
  .bgb-q .a{grid-template-columns:26px minmax(0,1fr);gap:10px;padding:0 0 22px}
  .bgb-q .a p{font-size:15.5px}
  .bgb-answer{padding:20px 18px}
  .bgb-qa-badge{white-space:normal}
}