/* =====================================================================
   GKBI CARE · Design System (Mobile First)
   GGC KTIS Bioindustrial
   ---------------------------------------------------------------------
   เขียนแบบ Mobile First : CSS ฐาน = 360px แล้วขยายด้วย min-width
   ===================================================================== */

/* ---------------- Design Token ---------------- */
:root{
  --navy:#0B2A4A;
  --navy-2:#123B66;
  --navy-3:#1B4E80;
  --blue:#1B7FC4;
  --blue-d:#146299;
  --blue-l:#E8F2FA;
  --blue-ll:#F4F9FD;
  --green:#3AA757;
  --green-d:#2E8B4F;
  --green-l:#E9F6ED;
  --red:#D93A3A;
  --red-d:#C42A2A;
  --red-l:#FBEBEB;
  --amber:#E8A33D;
  --amber-d:#C58A22;
  --amber-l:#FDF3E3;
  --purple:#7B5EA7;
  --purple-l:#F0EAF8;

  --ink:#1C2733;
  --ink-2:#54626F;
  --ink-3:#8794A1;
  --line:#DFE6ED;
  --line-2:#EDF1F5;
  --bg:#F4F7FA;
  --surface:#FFFFFF;

  --radius-s:10px;
  --radius:14px;
  --radius-l:20px;
  --shadow-s:0 1px 2px rgba(11,42,74,.06);
  --shadow:0 2px 4px rgba(11,42,74,.05),0 8px 20px rgba(11,42,74,.07);
  --shadow-l:0 6px 14px rgba(11,42,74,.09),0 18px 40px rgba(11,42,74,.10);

  --ease:cubic-bezier(.22,.61,.36,1);
  --header-h:58px;
  --font:'IBM Plex Sans Thai','Noto Sans Thai',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;
}

/* ---------------- Reset ---------------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;padding:0;
  font-family:var(--font);
  font-size:16px;line-height:1.65;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  -webkit-tap-highlight-color:transparent;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;border:0}
a{color:var(--blue);text-decoration:none}
a:hover{color:var(--blue-d)}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
h1,h2,h3,h4,h5{margin:0 0 .5em;font-weight:700;line-height:1.35;color:var(--navy)}
p{margin:0 0 1em}
ul,ol{margin:0 0 1em;padding-left:1.4em}
hr{border:0;border-top:1px solid var(--line);margin:20px 0}

/* ---------------- Layout ---------------- */
.qa-container{width:100%;max-width:520px;margin:0 auto;padding:0 16px}
.qa-container-wide{width:100%;max-width:1180px;margin:0 auto;padding:0 16px}
.qa-section{padding:22px 0}
.qa-page{min-height:100vh;display:flex;flex-direction:column}
.qa-main{flex:1 0 auto;padding-bottom:24px}

/* ---------------- Header ---------------- */
.qa-header{
  position:sticky;top:0;z-index:60;
  height:var(--header-h);
  display:flex;align-items:center;gap:10px;
  padding:0 16px;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(180%) blur(10px);
  -webkit-backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--line);
}
.qa-header .qa-logo{height:32px;width:auto}
.qa-header .qa-htitle{font-size:15px;font-weight:700;color:var(--navy);line-height:1.2}
.qa-header .qa-htitle small{display:block;font-size:10.5px;font-weight:500;color:var(--ink-3);letter-spacing:.2px}
.qa-header .qa-spacer{margin-left:auto}
.qa-back{
  width:38px;height:38px;flex:0 0 38px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:50%;border:1px solid var(--line);background:#fff;
  color:var(--navy);cursor:pointer;transition:.18s var(--ease);
}
.qa-back:hover{background:var(--blue-l);border-color:#C6DFF2}
.qa-back svg{width:18px;height:18px}

/* ---------------- Hero ---------------- */
.qa-hero{
  position:relative;overflow:hidden;
  background:linear-gradient(160deg,#0B2A4A 0%,#123B66 48%,#1B7FC4 100%);
  color:#fff;padding:30px 0 34px;text-align:center;
}
.qa-hero::before,.qa-hero::after{content:"";position:absolute;border-radius:50%;pointer-events:none}
.qa-hero::before{width:260px;height:260px;right:-90px;top:-110px;background:rgba(255,255,255,.06)}
.qa-hero::after{width:220px;height:220px;left:-80px;bottom:-120px;background:rgba(58,167,87,.16)}
.qa-hero .qa-container{position:relative;z-index:2}
.qa-hero h1{color:#fff;font-size:24px;margin:0 0 6px;letter-spacing:-.3px}
.qa-hero .qa-lead{font-size:14px;opacity:.92;margin:0 0 4px}
.qa-hero .qa-sub{font-size:12.5px;opacity:.75;margin:0}
.qa-hero-art{margin:2px auto 14px;width:200px;max-width:64vw}
.qa-hero-art svg{width:100%;height:auto;display:block}

/* ---------------- Card ---------------- */
.qa-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow-s);
  padding:16px;
}
.qa-card + .qa-card{margin-top:12px}
.qa-card-title{font-size:16px;font-weight:700;color:var(--navy);margin:0 0 10px;display:flex;align-items:center;gap:8px}

/* ---------------- Button ---------------- */
.qa-btn{
  position:relative;overflow:hidden;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  width:100%;min-height:52px;padding:12px 18px;
  border:0;border-radius:var(--radius-s);
  font-size:16px;font-weight:600;line-height:1.25;
  background:var(--blue);color:#fff;
  cursor:pointer;text-align:center;
  transition:transform .14s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
  box-shadow:0 3px 10px rgba(27,127,196,.28);
}
.qa-btn:hover{background:var(--blue-d);color:#fff}
.qa-btn:active{transform:scale(.985)}
.qa-btn:focus-visible{outline:3px solid rgba(27,127,196,.4);outline-offset:2px}
.qa-btn[disabled],.qa-btn.is-loading{opacity:.65;cursor:not-allowed;box-shadow:none}
.qa-btn-lg{min-height:62px;font-size:17px;border-radius:var(--radius)}
.qa-btn-lg small{display:block;font-size:12px;font-weight:400;opacity:.88;margin-top:2px}
.qa-btn-green{background:var(--green);box-shadow:0 3px 10px rgba(58,167,87,.3)}
.qa-btn-green:hover{background:var(--green-d)}
.qa-btn-red{background:var(--red);box-shadow:0 3px 10px rgba(217,58,58,.3)}
.qa-btn-red:hover{background:var(--red-d)}
.qa-btn-ghost{background:#fff;color:var(--navy);border:1px solid var(--line);box-shadow:none}
.qa-btn-ghost:hover{background:var(--blue-l);color:var(--navy);border-color:#C6DFF2}
.qa-btn-sm{min-height:40px;font-size:14px;padding:8px 14px;width:auto}
.qa-btn-auto{width:auto}
.qa-btn .qa-spin{width:18px;height:18px;border:2.5px solid rgba(255,255,255,.4);border-top-color:#fff;border-radius:50%;animation:qa-spin .7s linear infinite;display:none}
.qa-btn.is-loading .qa-spin{display:inline-block}
.qa-btn.is-loading .qa-btn-text{opacity:.9}
@keyframes qa-spin{to{transform:rotate(360deg)}}

/* Ripple */
.qa-ripple{position:absolute;border-radius:50%;transform:scale(0);background:rgba(255,255,255,.45);animation:qa-ripple .55s linear;pointer-events:none}
@keyframes qa-ripple{to{transform:scale(3.2);opacity:0}}

/* =====================================================================
   Feature panel  (แผงข้อมูล - ไม่ใช่ปุ่ม)
   ---------------------------------------------------------------------
   ออกแบบให้อ่านเป็น "ข้อมูลประกอบ" ไม่ใช่สิ่งที่กดได้ :
   - รวมเป็นแผงเดียว มีเส้นคั่นภายใน แทนการ์ดแยก 4 ใบ
   - ไม่มีเงา ไม่มีขอบรายชิ้น ไม่มี hover ยกขึ้น และ cursor เป็นลูกศรปกติ
   - ลูกเล่นใช้เฉพาะตอนโหลดครั้งแรก (แสงกวาด + ไอคอนไล่ขึ้น) แล้วหยุดนิ่ง
   ===================================================================== */
.qa-facts{
  position:relative;overflow:hidden;cursor:default;
  margin-top:14px;
  background:linear-gradient(180deg,#FFFFFF 0%,#FAFCFE 100%);
  border:1px solid var(--line);
  border-radius:var(--radius);
}
/* แถบสีแบรนด์ด้านบน */
.qa-facts::before{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;z-index:2;
  background:linear-gradient(90deg,var(--green) 0%,var(--blue) 55%,var(--red) 100%);
}
/* แสงกวาดผ่านครั้งเดียวตอนโหลด */
.qa-facts::after{
  content:"";position:absolute;top:0;bottom:0;left:0;width:45%;z-index:1;
  background:linear-gradient(100deg,rgba(255,255,255,0) 0%,rgba(255,255,255,.72) 50%,rgba(255,255,255,0) 100%);
  transform:translateX(-160%);
  animation:qa-sheen 1.5s .55s var(--ease) 1 forwards;
  pointer-events:none;
}
@keyframes qa-sheen{to{transform:translateX(340%)}}

.qa-facts-head{
  display:flex;align-items:center;gap:7px;
  padding:13px 15px 10px;position:relative;z-index:2;
}
.qa-facts-head svg{width:15px;height:15px;color:var(--blue)}
.qa-facts-head h2{
  margin:0;font-size:12.5px;font-weight:700;letter-spacing:.4px;
  color:var(--navy-2);text-transform:none;
}

.qa-facts-grid{
  list-style:none;margin:0;padding:0;position:relative;z-index:2;
  display:grid;grid-template-columns:1fr 1fr;
  border-top:1px solid var(--line-2);
}
.qa-facts-grid li{
  display:flex;align-items:center;gap:10px;
  padding:13px 13px;min-width:0;
  border-right:1px solid var(--line-2);
  border-bottom:1px solid var(--line-2);
}
.qa-facts-grid li:nth-child(2n){border-right:0}
.qa-facts-grid li:nth-last-child(-n+2){border-bottom:0}

.qa-facts-ic{
  flex:0 0 36px;width:36px;height:36px;border-radius:11px;
  display:flex;align-items:center;justify-content:center;
  animation:qa-ic-pop .5s var(--ease) both;
}
.qa-facts-ic svg{width:19px;height:19px}
.qa-facts-grid li:nth-child(1) .qa-facts-ic{animation-delay:.22s}
.qa-facts-grid li:nth-child(2) .qa-facts-ic{animation-delay:.30s}
.qa-facts-grid li:nth-child(3) .qa-facts-ic{animation-delay:.38s}
.qa-facts-grid li:nth-child(4) .qa-facts-ic{animation-delay:.46s}
@keyframes qa-ic-pop{
  0%{opacity:0;transform:scale(.6)}
  65%{opacity:1;transform:scale(1.08)}
  100%{opacity:1;transform:scale(1)}
}

.qa-facts-tx{min-width:0}
.qa-facts-tx b{display:block;font-size:13.5px;font-weight:600;color:var(--navy);line-height:1.3}
.qa-facts-tx span{display:block;font-size:11.5px;color:var(--ink-3);line-height:1.45;margin-top:1px}

/* ---------------- Menu tiles ---------------- */
.qa-menu-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.qa-menu-item{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:16px 10px;min-height:88px;text-align:center;
  color:var(--navy);font-size:13.5px;font-weight:600;
  box-shadow:var(--shadow-s);transition:.2s var(--ease);
}
.qa-menu-item:hover{background:var(--blue-ll);border-color:#C6DFF2;color:var(--navy);transform:translateY(-2px)}
.qa-menu-item svg{width:24px;height:24px;color:var(--blue)}

/* ---------------- Category card (Step 1) ---------------- */
.qa-cat-list{display:flex;flex-direction:column;gap:10px}
.qa-cat{
  position:relative;display:flex;align-items:center;gap:12px;
  width:100%;text-align:left;
  background:#fff;border:1.5px solid var(--line);border-left-width:5px;
  border-radius:var(--radius);padding:13px 14px;min-height:68px;
  cursor:pointer;box-shadow:var(--shadow-s);
  transition:transform .18s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.qa-cat:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.qa-cat:active{transform:scale(.99)}
.qa-cat .qa-cat-icon{
  flex:0 0 44px;width:44px;height:44px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  transition:transform .2s var(--ease);
}
.qa-cat .qa-cat-icon svg{width:24px;height:24px}
.qa-cat:hover .qa-cat-icon{transform:scale(1.06)}
.qa-cat .qa-cat-body{min-width:0;flex:1}
.qa-cat b{display:block;font-size:14.5px;color:var(--navy);line-height:1.35}
.qa-cat span{display:block;font-size:11.5px;color:var(--ink-3);line-height:1.4;margin-top:1px}
.qa-cat .qa-cat-chev{flex:0 0 auto;color:var(--ink-3)}
.qa-cat.is-selected{background:var(--blue-ll);border-color:var(--blue);box-shadow:0 0 0 3px rgba(27,127,196,.12)}
.qa-cat.is-selected .qa-cat-chev{color:var(--blue)}

/* ---------------- Form ---------------- */
.qa-field{margin-bottom:14px}
.qa-label{display:block;font-size:13.5px;font-weight:600;color:var(--navy-2);margin-bottom:6px}
.qa-label .qa-req{color:var(--red);margin-left:2px}
.qa-input,.qa-select,.qa-textarea{
  width:100%;min-height:48px;padding:11px 13px;
  background:#fff;border:1.5px solid var(--line);border-radius:var(--radius-s);
  font-size:16px;color:var(--ink);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
  -webkit-appearance:none;appearance:none;
}
.qa-textarea{min-height:120px;resize:vertical;line-height:1.6}
.qa-input:focus,.qa-select:focus,.qa-textarea:focus{
  outline:0;border-color:var(--blue);box-shadow:0 0 0 3px rgba(27,127,196,.14);
}
.qa-select{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2354626F' stroke-width='2.2' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 12px center;background-size:17px;
  padding-right:38px;
}
.qa-input.is-error,.qa-select.is-error,.qa-textarea.is-error{border-color:var(--red);box-shadow:0 0 0 3px rgba(217,58,58,.12)}
.qa-error-msg{display:none;font-size:12.5px;color:var(--red-d);margin-top:5px;font-weight:500}
.qa-error-msg.is-show{display:flex;align-items:center;gap:5px}
.qa-hint{font-size:12px;color:var(--ink-3);margin-top:5px}
.qa-counter{font-size:12px;color:var(--ink-3);text-align:right;margin-top:5px}
.qa-counter.is-warn{color:var(--amber-d);font-weight:600}
.qa-counter.is-over{color:var(--red-d);font-weight:700}
.qa-row2{display:grid;grid-template-columns:1fr 1fr;gap:10px}

/* Severity picker */
.qa-sev{display:grid;grid-template-columns:repeat(4,1fr);gap:6px}
.qa-sev-item{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;
  min-height:56px;padding:6px 3px;cursor:pointer;
  background:#fff;border:1.5px solid var(--line);border-radius:var(--radius-s);
  font-size:11.5px;font-weight:600;color:var(--ink-2);text-align:center;line-height:1.25;
  transition:.18s var(--ease);
}
.qa-sev-item i{font-style:normal;font-size:13px;line-height:1}
.qa-sev-item:hover{border-color:var(--ink-3)}
.qa-sev-item.is-active{color:#fff;border-color:transparent;box-shadow:var(--shadow-s);transform:translateY(-1px)}
.qa-sev-item.is-active[data-sev="1"]{background:var(--blue)}
.qa-sev-item.is-active[data-sev="2"]{background:var(--amber-d)}
.qa-sev-item.is-active[data-sev="3"]{background:#D9741F}
.qa-sev-item.is-active[data-sev="4"]{background:var(--red)}

/* ---------------- Step / Progress ---------------- */
.qa-steps{padding:14px 0 6px}
.qa-step-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
.qa-step-label{font-size:12.5px;font-weight:700;color:var(--blue);letter-spacing:.3px}
.qa-step-name{font-size:12.5px;color:var(--ink-3)}
.qa-progress{height:6px;background:var(--line-2);border-radius:4px;overflow:hidden}
.qa-progress i{display:block;height:100%;width:25%;background:linear-gradient(90deg,var(--blue),var(--navy-3));border-radius:4px;transition:width .45s var(--ease)}
.qa-step-dots{display:flex;gap:6px;margin-top:10px}
.qa-step-dots span{flex:1;height:4px;border-radius:3px;background:var(--line)}
.qa-step-dots span.is-done{background:var(--green)}
.qa-step-dots span.is-now{background:var(--blue)}

/* ---------------- Upload ---------------- */
.qa-upload-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:12px}
.qa-upload-btn{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  min-height:76px;padding:12px;cursor:pointer;
  background:var(--blue-ll);border:1.5px dashed #B9D6EC;border-radius:var(--radius);
  color:var(--navy-2);font-size:13.5px;font-weight:600;
  transition:.18s var(--ease);
}
.qa-upload-btn:hover{background:var(--blue-l);border-color:var(--blue)}
.qa-upload-btn svg{width:26px;height:26px;color:var(--blue)}
.qa-img-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.qa-img-item{
  position:relative;aspect-ratio:4/3;border-radius:var(--radius-s);overflow:hidden;
  background:var(--line-2);border:1px solid var(--line);
  animation:qa-fadein .3s var(--ease);
}
.qa-img-item img{width:100%;height:100%;object-fit:cover}
.qa-img-item .qa-img-del{
  position:absolute;top:6px;right:6px;width:30px;height:30px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(11,42,74,.72);color:#fff;border:0;border-radius:50%;
  cursor:pointer;backdrop-filter:blur(3px);transition:.16s var(--ease);
}
.qa-img-item .qa-img-del:hover{background:var(--red)}
.qa-img-item .qa-img-del svg{width:15px;height:15px}
.qa-img-item .qa-img-bar{
  position:absolute;left:0;right:0;bottom:0;height:4px;background:rgba(255,255,255,.35);
}
.qa-img-item .qa-img-bar i{display:block;height:100%;width:0;background:var(--green);transition:width .25s linear}
.qa-img-item.is-uploading img{opacity:.55}
.qa-img-count{font-size:12.5px;color:var(--ink-3);text-align:center;margin-top:10px}

/* ---------------- Review (Step 4) ---------------- */
.qa-review-row{display:flex;gap:11px;padding:11px 0;border-bottom:1px dashed var(--line)}
.qa-review-row:last-child{border-bottom:0}
.qa-review-ic{
  flex:0 0 34px;width:34px;height:34px;border-radius:10px;background:var(--blue-l);
  display:flex;align-items:center;justify-content:center;color:var(--blue);
}
.qa-review-ic svg{width:18px;height:18px}
.qa-review-bd{min-width:0;flex:1}
.qa-review-bd span{display:block;font-size:11.5px;color:var(--ink-3);line-height:1.4}
.qa-review-bd b{display:block;font-size:14.5px;color:var(--navy);font-weight:600;line-height:1.45;word-break:break-word}
.qa-review-bd p{margin:0;font-size:14px;color:var(--ink);white-space:pre-wrap;word-break:break-word}
.qa-thumb-row{display:grid;grid-template-columns:repeat(3,1fr);gap:7px;margin-top:8px}
.qa-thumb-row img{aspect-ratio:1;object-fit:cover;border-radius:8px;border:1px solid var(--line);width:100%}

/* ---------------- Alerts ---------------- */
.qa-alert{
  display:flex;gap:10px;align-items:flex-start;
  padding:12px 14px;border-radius:var(--radius-s);font-size:13.5px;line-height:1.55;
  border:1px solid transparent;margin-bottom:12px;
}
.qa-alert svg{flex:0 0 18px;width:18px;height:18px;margin-top:2px}
.qa-alert-info{background:var(--blue-l);border-color:#C6DFF2;color:var(--navy-2)}
.qa-alert-warn{background:var(--amber-l);border-color:#F1DDB9;color:#7A5710}
.qa-alert-error{background:var(--red-l);border-color:#F3D0D0;color:#9E2222}
.qa-alert-success{background:var(--green-l);border-color:#CFE9D8;color:#256B3E}

/* ---------------- Badges ---------------- */
.qa-badge{
  display:inline-flex;align-items:center;gap:4px;
  padding:3px 9px;border-radius:100px;
  font-size:11.5px;font-weight:600;line-height:1.5;white-space:nowrap;
}
.qa-badge i{font-style:normal;font-size:10px}

/* ---------------- Sticky bottom bar ---------------- */
.qa-bottom-bar{
  position:sticky;bottom:0;z-index:40;
  display:flex;gap:10px;
  padding:12px 16px calc(12px + env(safe-area-inset-bottom,0px));
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  border-top:1px solid var(--line);
  margin-top:14px;
}
.qa-bottom-bar .qa-btn{margin:0}
.qa-bottom-bar .qa-btn-ghost{flex:0 0 40%}
body.qa-keyboard-open .qa-bottom-bar{position:static}

/* ---------------- Toast ---------------- */
.qa-toast-wrap{
  position:fixed;left:50%;bottom:calc(84px + env(safe-area-inset-bottom,0px));
  transform:translateX(-50%);z-index:200;
  width:calc(100% - 32px);max-width:420px;
  display:flex;flex-direction:column;gap:8px;pointer-events:none;
}
.qa-toast{
  display:flex;align-items:flex-start;gap:9px;
  padding:12px 14px;border-radius:var(--radius-s);
  background:var(--navy);color:#fff;font-size:13.5px;line-height:1.5;
  box-shadow:var(--shadow-l);
  animation:qa-toast-in .3s var(--ease);
}
.qa-toast.is-out{animation:qa-toast-out .28s var(--ease) forwards}
.qa-toast-error{background:var(--red-d)}
.qa-toast-success{background:var(--green-d)}
.qa-toast svg{flex:0 0 17px;width:17px;height:17px;margin-top:2px}
@keyframes qa-toast-in{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
@keyframes qa-toast-out{to{opacity:0;transform:translateY(10px)}}

/* ---------------- Bottom sheet ---------------- */
.qa-sheet-mask{
  position:fixed;inset:0;z-index:150;background:rgba(11,42,74,.45);
  opacity:0;visibility:hidden;transition:.25s var(--ease);
  backdrop-filter:blur(2px);
}
.qa-sheet-mask.is-open{opacity:1;visibility:visible}
.qa-sheet{
  position:fixed;left:0;right:0;bottom:0;z-index:160;
  background:#fff;border-radius:var(--radius-l) var(--radius-l) 0 0;
  max-height:82vh;display:flex;flex-direction:column;
  transform:translateY(100%);transition:transform .3s var(--ease);
  padding-bottom:env(safe-area-inset-bottom,0px);
}
.qa-sheet.is-open{transform:none}
.qa-sheet-head{padding:14px 18px 10px;border-bottom:1px solid var(--line);position:relative}
.qa-sheet-head::before{content:"";position:absolute;top:6px;left:50%;transform:translateX(-50%);width:38px;height:4px;border-radius:3px;background:var(--line)}
.qa-sheet-head h4{margin:6px 0 0;font-size:16px}
.qa-sheet-body{overflow-y:auto;padding:8px 12px 16px;-webkit-overflow-scrolling:touch}
.qa-sheet-opt{
  display:flex;align-items:center;gap:10px;width:100%;text-align:left;
  padding:13px 12px;min-height:50px;border:0;background:none;
  border-radius:var(--radius-s);font-size:15px;color:var(--ink);cursor:pointer;
}
.qa-sheet-opt:hover{background:var(--blue-ll)}
.qa-sheet-opt.is-active{background:var(--blue-l);color:var(--navy);font-weight:600}

/* ---------------- Loading overlay ---------------- */
.qa-loading{
  position:fixed;inset:0;z-index:300;
  display:none;align-items:center;justify-content:center;flex-direction:column;gap:14px;
  background:rgba(255,255,255,.92);backdrop-filter:blur(3px);
}
.qa-loading.is-show{display:flex}
.qa-loading img{height:44px;width:auto;animation:qa-pulse 1.6s ease-in-out infinite}
.qa-loading .qa-ring{width:34px;height:34px;border:3px solid var(--blue-l);border-top-color:var(--blue);border-radius:50%;animation:qa-spin .75s linear infinite}
.qa-loading p{margin:0;font-size:13.5px;color:var(--ink-2)}
@keyframes qa-pulse{0%,100%{opacity:1}50%{opacity:.55}}

/* Skeleton */
.qa-skel{background:linear-gradient(90deg,#EDF1F5 25%,#F6F9FB 37%,#EDF1F5 63%);background-size:400% 100%;animation:qa-skel 1.3s ease infinite;border-radius:8px}
@keyframes qa-skel{0%{background-position:100% 50%}100%{background-position:0 50%}}

/* ---------------- Success ---------------- */
.qa-success{text-align:center;padding:26px 0 10px}
.qa-check-ring{
  width:104px;height:104px;margin:0 auto 18px;border-radius:50%;
  background:var(--green-l);display:flex;align-items:center;justify-content:center;
  animation:qa-pop .5s var(--ease);
}
.qa-check-ring svg{width:58px;height:58px}
.qa-check-ring svg path{
  stroke:var(--green);stroke-width:4;fill:none;stroke-linecap:round;stroke-linejoin:round;
  stroke-dasharray:60;stroke-dashoffset:60;
  animation:qa-draw .55s .25s var(--ease) forwards;
}
.qa-check-ring svg circle{
  stroke:var(--green);stroke-width:3;fill:none;opacity:.32;
  stroke-dasharray:170;stroke-dashoffset:170;
  animation:qa-draw2 .7s var(--ease) forwards;
}
@keyframes qa-draw{to{stroke-dashoffset:0}}
@keyframes qa-draw2{to{stroke-dashoffset:0}}
@keyframes qa-pop{0%{transform:scale(.5);opacity:0}60%{transform:scale(1.06)}100%{transform:scale(1);opacity:1}}

/* ---------------- QR block ---------------- */
.qa-qr{
  display:flex;align-items:center;gap:14px;
  background:#fff;border:1px dashed var(--line);border-radius:var(--radius);padding:14px;
}
.qa-qr-box{
  flex:0 0 76px;width:76px;height:76px;border-radius:10px;
  background:var(--blue-ll);display:flex;align-items:center;justify-content:center;color:var(--navy)
}
.qa-qr-box svg{width:44px;height:44px}
.qa-qr b{display:block;font-size:14px;color:var(--navy)}
.qa-qr span{display:block;font-size:12px;color:var(--ink-3);line-height:1.5;margin-top:2px}

/* ---------------- Footer ---------------- */
.qa-footer{
  flex-shrink:0;text-align:center;padding:22px 16px calc(22px + env(safe-area-inset-bottom,0px));
  border-top:1px solid var(--line);background:#fff;
}
.qa-footer img{height:26px;width:auto;margin:0 auto 8px;opacity:.9}
.qa-footer p{margin:0;font-size:11.5px;color:var(--ink-3);line-height:1.7}
.qa-footer a{color:var(--ink-3)}
.qa-footer a:hover{color:var(--blue)}

/* ---------------- Content page ---------------- */
.qa-prose{font-size:15px;line-height:1.8;color:var(--ink)}
.qa-prose h2{font-size:19px;margin:22px 0 8px}
.qa-prose h3{font-size:16px;margin:18px 0 6px;color:var(--navy-2)}
.qa-prose ul{padding-left:20px}
.qa-prose li{margin-bottom:6px}
.qa-prose strong{color:var(--navy)}

/* ---------------- Animation utility ---------------- */
.qa-fade{animation:qa-fadein .4s var(--ease) both}
.qa-up{animation:qa-slideup .45s var(--ease) both}
.qa-d1{animation-delay:.06s}.qa-d2{animation-delay:.12s}.qa-d3{animation-delay:.18s}
.qa-d4{animation-delay:.24s}.qa-d5{animation-delay:.3s}.qa-d6{animation-delay:.36s}
@keyframes qa-fadein{from{opacity:0}to{opacity:1}}
@keyframes qa-slideup{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
}

/* ---------------- Accessibility ---------------- */
.qa-sr{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.qa-skip{position:absolute;left:-999px;top:0;background:var(--navy);color:#fff;padding:10px 16px;z-index:999;border-radius:0 0 8px 0}
.qa-skip:focus{left:0;color:#fff}
:focus-visible{outline:3px solid rgba(27,127,196,.45);outline-offset:2px}

/* =====================================================================
   Tablet  >= 768px
   ===================================================================== */
@media (min-width:768px){
  .qa-container{max-width:640px;padding:0 24px}
  .qa-container-wide{padding:0 24px}
  .qa-hero{padding:44px 0 48px}
  .qa-hero h1{font-size:31px}
  .qa-hero .qa-lead{font-size:16px}
  .qa-hero-art{width:250px}
  .qa-facts-grid{grid-template-columns:repeat(4,1fr)}
  .qa-facts-grid li{
    border-bottom:0;padding:16px 16px 18px;
    flex-direction:column;align-items:flex-start;gap:9px;
  }
  .qa-facts-grid li:nth-child(2n){border-right:1px solid var(--line-2)}
  .qa-facts-grid li:last-child{border-right:0}
  .qa-facts-ic{flex:0 0 38px;width:38px;height:38px;border-radius:12px}
  .qa-facts-ic svg{width:20px;height:20px}
  .qa-menu-grid{grid-template-columns:repeat(4,1fr)}
  .qa-img-grid{grid-template-columns:repeat(3,1fr)}
  .qa-card{padding:20px}
  .qa-bottom-bar{position:static;background:none;border-top:0;backdrop-filter:none;padding:16px 0 0}
  .qa-header{padding:0 24px}
}

/* =====================================================================
   Desktop >= 1024px
   ===================================================================== */
@media (min-width:1024px){
  .qa-container{max-width:720px}
  .qa-hero h1{font-size:36px}
  .qa-hero-art{width:290px}
  .qa-cat-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}
  .qa-section{padding:28px 0}
}