/* ============================================================
   صفحات داخلی و فرم‌های داینامیک — آزمایشگاه گلستان
   نکتهٔ تایپوگرافی: هیچ letter-spacing روی متن فارسی اعمال نمی‌شود.
   ============================================================ */

/* ---------- سربرگ صفحه ---------- */
.pagehead{position:relative;padding-block:clamp(120px,17vh,190px) clamp(48px,7vh,80px);overflow:hidden;isolation:isolate}
.pagehead .ph-bg{position:absolute;inset:0;z-index:-1;background:
  radial-gradient(120% 90% at 88% 0%, rgba(42,117,115,.13), transparent 62%),
  linear-gradient(180deg,var(--wash),var(--paper))}
.pagehead.has-img .ph-bg{background:var(--teal-d)}
.pagehead.has-img .ph-bg img{width:100%;height:100%;object-fit:cover;opacity:.34;filter:grayscale(.25)}
.pagehead.has-img::after{content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(180deg,rgba(0,0,0,.62),rgba(0,0,0,.30) 55%,rgba(0,0,0,.72))}
.pagehead.has-img,.pagehead.has-img h1,.pagehead.has-img .lede{color:#fff}

.crumb{font-size:12px;font-weight:600;letter-spacing:0;color:var(--teal);
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  background:rgba(42,117,115,.10);border:1px solid rgba(42,117,115,.20)}
.pagehead.has-img .crumb{color:#fff;background:rgba(255,255,255,.13);border-color:rgba(255,255,255,.26)}

.pagehead h1{margin:18px 0 0;font-size:clamp(32px,5.6vw,64px);line-height:1.28;font-weight:800;max-width:16ch}
.pagehead h1 b{color:var(--teal);font-weight:800}
.pagehead.has-img h1 b{color:#8fd3d0}
.pagehead .lede{margin:16px 0 0;max-width:62ch;font-size:clamp(15px,1.6vw,18px);line-height:2.1;color:var(--mute)}
.pagehead.has-img .lede{color:rgba(255,255,255,.86)}
.pagehead .hero-cta{margin-top:30px}

/* ---------- بخش با پس‌زمینهٔ روشن ---------- */
.sec.wash{background:var(--wash)}
.prep-grid{display:grid;gap:clamp(28px,4vw,64px);grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);align-items:start}
@media(max-width:900px){.prep-grid{grid-template-columns:1fr}}

/* ---------- مراحل ---------- */
.steps{display:grid;gap:20px;grid-template-columns:repeat(4,minmax(0,1fr))}
@media(max-width:1000px){.steps{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:560px){.steps{grid-template-columns:1fr}}
.step{position:relative;padding:26px 24px 28px;border:1px solid var(--line);border-radius:18px;background:var(--paper);
  transition:border-color .35s var(--ease),transform .35s var(--ease)}
.step:hover{border-color:rgba(42,117,115,.42);transform:translateY(-3px)}
.step .n{display:inline-grid;place-items:center;width:42px;height:42px;border-radius:12px;
  background:rgba(42,117,115,.10);color:var(--teal);font-size:15px;font-weight:600}
.step h3{margin:16px 0 8px;font-size:17px;font-weight:700;line-height:1.7}
.step p{margin:0;font-size:14px;line-height:2;color:var(--mute)}

/* ---------- چیدمان فرم ---------- */
.form-grid{display:grid;gap:clamp(28px,4vw,58px);grid-template-columns:minmax(0,1.25fr) minmax(0,.85fr);align-items:start}
.form-grid.single{grid-template-columns:minmax(0,860px);justify-content:center}
@media(max-width:980px){.form-grid{grid-template-columns:1fr}}
.form-col h2{margin:10px 0 0;font-size:clamp(24px,3.2vw,38px);line-height:1.45;font-weight:800}
.form-col h2 b{color:var(--teal);font-weight:800}
.form-col .sec-note{margin:12px 0 26px;max-width:60ch}
.side-col{display:grid;gap:18px}

/* ---------- فرم ---------- */
.gform{margin-top:8px}
.gform{position:relative}
.gform .hp{
  position:absolute;
  width:1px;height:1px;
  padding:0;margin:-1px;border:0;
  overflow:hidden;
  clip:rect(0 0 0 0);
  clip-path:inset(50%);
  white-space:nowrap
}
.fgrid{display:grid;gap:16px;grid-template-columns:repeat(2,minmax(0,1fr))}
@media(max-width:640px){.fgrid{grid-template-columns:1fr}}
.fld{display:flex;flex-direction:column;gap:8px}
.fld.wide{grid-column:1/-1}
.fld>label{font-size:13px;font-weight:600;color:var(--ink);display:flex;align-items:center;gap:5px;letter-spacing:0}
.fld>label i{color:#c0392b;font-style:normal;font-size:14px;line-height:1}

.fld input,.fld select,.fld textarea{
  width:100%;font-family:var(--sans);font-size:15px;line-height:1.9;color:var(--ink);
  background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:13px 15px;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease)}
.fld textarea{resize:vertical;min-height:132px;line-height:2}
.fld input::placeholder,.fld textarea::placeholder{color:#9aa3a1}
.fld input:focus,.fld select:focus,.fld textarea:focus{
  outline:none;border-color:var(--teal);box-shadow:0 0 0 3px rgba(42,117,115,.14)}
.fld select{appearance:none;cursor:pointer;
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%235b6360' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-size:18px;background-position:left 14px center;padding-left:42px}
html[dir="ltr"] .fld select{background-position:right 14px center;padding-left:15px;padding-right:42px}
.fld input[type="date"],.fld input[type="time"]{direction:ltr;text-align:start}
.fld small{font-size:12px;line-height:1.9;color:var(--mute);letter-spacing:0}
.fld .ferr{font-size:12px;font-style:normal;color:#c0392b;letter-spacing:0}
.fld.bad input,.fld.bad select,.fld.bad textarea{border-color:#e0a8a0;background:#fdf7f6}

.opts{display:flex;flex-wrap:wrap;gap:10px}
.opt{display:inline-flex;align-items:center;gap:8px;padding:10px 15px;border:1px solid var(--line);
  border-radius:999px;font-size:14px;cursor:pointer;transition:border-color .25s var(--ease),background .25s var(--ease)}
.opt:hover{border-color:rgba(42,117,115,.45)}
.opt input{accent-color:var(--teal);width:16px;height:16px;margin:0}
.opt:has(input:checked){border-color:var(--teal);background:rgba(42,117,115,.08)}

/* ===================== کد امنیتی فرم‌ها ===================== */
.fcap__row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.fcap__img{height:52px;width:auto;border:1px solid var(--line,#c8d6d4);border-radius:10px;background:#fff;display:block}
.fcap__ref{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border:1px solid var(--line,#c8d6d4);border-radius:10px;background:#fff;color:#2a7573;cursor:pointer}
.fcap__ref:hover{background:rgba(42,117,115,.08)}
.fcap__ref svg{width:18px;height:18px}
.fcap__q{font-size:1.1rem;font-weight:600;color:#2a7573;padding:10px 14px;border:1px dashed #c8d6d4;border-radius:10px;background:#fff;letter-spacing:0}
.fcap__row input{flex:1;min-width:120px}

.fact{margin-top:26px;display:flex;flex-wrap:wrap;align-items:center;gap:18px}
.fact .cta{border:0}
.fnote{margin:0;font-size:12.5px;line-height:1.95;color:var(--mute);max-width:44ch;letter-spacing:0}

/* ===================== فرم چندمرحله‌ای ===================== */
.fstep-head{grid-column:1/-1;font-weight:800;font-size:15px;color:#2a7573;padding-block-end:6px;border-block-end:1px dashed var(--line,#c8d6d4);letter-spacing:0}
.gform .soff{display:none!important}
.gform .fact [hidden]{display:none!important}
.fnav{border:0}
.fnav[data-nav="prev"]{background:transparent;border:1px solid var(--line,#c8d6d4);color:inherit}
.fprog{font-size:13px;color:var(--muted,#6b7d7b);letter-spacing:0}

/* ===================== تقویم شمسی ===================== */
.jdw{position:relative}
.jdw input{cursor:pointer}
.jdp{position:absolute;inset-block-start:calc(100% + 6px);inset-inline-start:0;z-index:40;width:272px;max-width:100%;background:#fff;border:1px solid var(--line,#c8d6d4);border-radius:14px;box-shadow:0 14px 34px -12px rgba(0,0,0,.22);padding:10px}
.jdp__bar{display:flex;align-items:center;justify-content:space-between;margin-block-end:8px}
.jdp__bar b{font-size:14px;color:#2a7573;letter-spacing:0}
.jdp__nav{width:30px;height:30px;border:1px solid var(--line,#c8d6d4);border-radius:9px;background:#fff;color:#2a7573;font-size:17px;cursor:pointer;line-height:1}
.jdp__nav:hover{background:rgba(42,117,115,.08)}
.jdp__grid{display:grid;grid-template-columns:repeat(7,1fr);gap:3px;text-align:center}
.jdp__grid i{font-style:normal;font-size:11px;color:var(--muted,#6b7d7b);padding-block:4px}
.jdp__d{border:0;background:transparent;border-radius:8px;padding-block:6px;font-size:13px;cursor:pointer}
.jdp__d:hover:not(:disabled){background:rgba(42,117,115,.12)}
.jdp__d:disabled{color:#c8d6d4;cursor:default}
.jdp__today{box-shadow:inset 0 0 0 1.5px #2a7573;color:#2a7573;font-weight:700}

/* ---------- پیام‌ها ---------- */
.fmsg{display:flex;align-items:flex-start;gap:12px;padding:18px 20px;border-radius:14px;
  font-size:14.5px;line-height:2;margin-block:8px 4px}
.fmsg svg{width:22px;height:22px;flex:none;margin-top:5px}
.fmsg.good{background:rgba(42,117,115,.09);border:1px solid rgba(42,117,115,.28);color:var(--teal-d)}
.fmsg.bad{background:#fdf3f1;border:1px solid #e8c3bc;color:#8e3a2c}

@media(prefers-reduced-motion:reduce){
  .step,.fld input,.fld select,.fld textarea{transition:none}
}

/* ===================== لوگوی SVG در سربرگ صفحهٔ تماس ===================== */
.pagehead.has-logo .ph-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(28px,4vw,64px);align-items:center}
@media(max-width:900px){.pagehead.has-logo .ph-grid{grid-template-columns:1fr}}

.ph-logo{margin:0;padding:clamp(26px,3vw,40px);border-radius:20px;
  background:linear-gradient(150deg,rgba(255,255,255,.9),rgba(241,246,245,.7));
  border:1px solid var(--line);box-shadow:0 30px 60px -44px rgba(12,39,38,.5);
  display:flex;flex-direction:column;align-items:center;gap:20px;text-align:center}
.ph-logo .lg{width:min(100%,300px);height:auto;color:var(--ink)}
.ph-logo figcaption{display:flex;flex-direction:column;align-items:center;gap:12px}
.lg-isos{display:inline-flex;gap:8px}
.ph-logo figcaption b{font-size:12.5px;font-weight:600;color:var(--mute);line-height:2}
.lg-iso{display:inline-flex;align-items:center;gap:6px;padding:6px 13px;border-radius:999px;
  font-family:var(--mono);font-size:11px;font-weight:600;letter-spacing:.06em;
  color:var(--teal);background:rgba(42,117,115,.09);border:1px solid rgba(42,117,115,.2)}

/* --- افکت ورود لوگو --- */
.lg .lg-icon,.lg .lg-word,.lg .lg-tag{opacity:0}
.lg .lg-icon{transform:scale(.72) rotate(-14deg);transform-origin:38px 44px}
.lg .lg-word{clip-path:inset(0 0 0 100%)}
.lg .lg-tag{transform:translateY(7px)}

.rv.in .lg .lg-icon{opacity:1;transform:none;
  transition:opacity .6s var(--ease) .1s,transform .9s var(--slow) .1s}
.rv.in .lg .lg-word{opacity:1;clip-path:inset(0 0 0 0%);
  transition:opacity .3s linear .45s,clip-path 1s var(--slow) .45s}
.rv.in .lg .lg-tag{opacity:1;transform:none;
  transition:opacity .7s var(--ease) 1.05s,transform .8s var(--slow) 1.05s}

@media(prefers-reduced-motion:reduce){
  .lg .lg-icon,.lg .lg-word,.lg .lg-tag{opacity:1;transform:none;clip-path:none;transition:none}
}

/* ===================== صفحهٔ درباره ما ===================== */

/* --- نوار ارقام --- */
.stats-band{background:var(--ink);color:#fff;position:relative;overflow:hidden;isolation:isolate}
.stats-band::before{content:"";position:absolute;inset:0;z-index:-1;opacity:.55;
  background:radial-gradient(680px 380px at 84% 0%,rgba(42,117,115,.4),transparent 62%)}
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:clamp(20px,2.4vw,34px);padding-block:clamp(38px,5vw,58px)}
@media(max-width:820px){.stats{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:440px){.stats{grid-template-columns:1fr}}
.stat{display:flex;flex-direction:column;gap:5px;padding-inline-start:18px;
  border-inline-start:1.5px solid rgba(255,255,255,.16)}
.stat b{font-family:var(--sans);font-size:clamp(30px,3.6vw,44px);font-weight:800;
  line-height:1.25;color:#a8dedb;letter-spacing:0}
html[lang="en"] .stat b{font-family:var(--mono);font-weight:600}
.stat span{font-size:14.5px;font-weight:700;color:#fff;line-height:1.8}
.stat small{font-size:12.5px;line-height:1.95;color:rgba(255,255,255,.55)}
.stat:first-child{border-inline-start:0;padding-inline-start:0}
@media(max-width:820px){.stat:nth-child(3){border-inline-start:0;padding-inline-start:0}}
@media(max-width:440px){.stat{border-inline-start:0;padding-inline-start:0}}

/* --- ستون داستان --- */
.story{display:flex;flex-direction:column;gap:18px}
.story p{margin:0;font-size:15px;line-height:2.15;color:var(--mute)}
.story p:first-child{font-size:16.5px;line-height:2.1;color:var(--ink);font-weight:500}
.story-logo{margin:10px 0 0;padding:clamp(24px,2.6vw,34px);border-radius:18px;
  background:linear-gradient(150deg,rgba(241,246,245,.9),rgba(255,255,255,.6));
  border:1px solid var(--line);
  display:flex;flex-direction:column;align-items:center;gap:18px;text-align:center}
.story-logo .lg{width:min(100%,280px);height:auto;color:var(--ink)}
.story-logo figcaption{display:flex;flex-direction:column;align-items:center;gap:11px}
.story-logo figcaption b{font-size:12.5px;font-weight:600;color:var(--mute);line-height:2}

/* --- خط زمان در صفحهٔ درباره: تک‌ستونه و کارتی --- */
.timeline.wide{max-width:820px;margin-inline:auto;margin-block-start:8px}
.timeline.wide::before{inset-inline-start:9px}
.timeline.wide li{padding-inline-start:44px;padding-block-end:18px}
.timeline.wide li::before{inset-block-start:26px;width:19px;height:19px;
  border-width:2px;background:var(--paper)}
.timeline.wide li > :where(span,h4,p){position:relative;z-index:1}
.timeline.wide li{position:relative}
.timeline.wide li::after{content:"";position:absolute;inset-block:0 18px;
  inset-inline-start:44px;inset-inline-end:0;border:1px solid var(--line);
  border-radius:16px;background:var(--paper);z-index:0;
  transition:border-color .35s var(--ease),transform .35s var(--ease)}
.timeline.wide li:hover::after{border-color:rgba(42,117,115,.42)}
.timeline.wide li{padding-block-start:0}
.timeline.wide li > span,.timeline.wide li > h4,.timeline.wide li > p{
  margin-inline-start:22px;margin-inline-end:24px}
.timeline.wide li > span{padding-block-start:22px;display:block}
.timeline.wide li > p{padding-block-end:24px}

html[lang="fa"] .timeline .yr{font-family:var(--sans);font-size:11.5px;letter-spacing:0;font-weight:700}

/* ============================================================
   این بخش را به انتهای  assets/css/pages.css  اضافه کنید
   ============================================================ */

/* --- فیلد شرطی: بدون پرش، با ظاهر شدن نرم --- */
.gform .fld.cond[hidden]{display:none}
.gform .fld.cond:not([hidden]){animation:fldIn .28s var(--ease) both}
@keyframes fldIn{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}

/* --- پیوست فایل --- */
.gform .filef{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.gform .filef input[type=file]{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;border:0;
  overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap
}
.gform .filebtn{
  display:inline-flex;align-items:center;gap:9px;cursor:pointer;
  padding:12px 20px;border-radius:12px;
  border:1.5px dashed rgba(42,117,115,.45);
  background:rgba(42,117,115,.05);
  color:var(--teal);font-family:var(--sans);font-weight:600;font-size:14.5px;
  letter-spacing:0;line-height:1;
  transition:background .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease)
}
.gform .filebtn:hover{background:rgba(42,117,115,.1);border-color:var(--teal);transform:translateY(-1px)}
.gform .filebtn svg{width:18px;height:18px;flex:none}
.gform .filef input[type=file]:focus-visible + .filebtn{outline:2px solid var(--teal);outline-offset:3px}
.gform .filename{
  font-style:normal;font-size:13.5px;color:var(--muted);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:100%
}
.gform .filename.on{color:var(--ink);font-weight:600}
.gform .filename.on::before{
  content:'';display:inline-block;width:7px;height:7px;border-radius:50%;
  background:var(--teal);margin-inline-end:8px;vertical-align:middle
}

@media (max-width:560px){
  .gform .filebtn{width:100%;justify-content:center}
  .gform .filename{width:100%;text-align:center}
}
/* ===================== مجلهٔ سلامت ===================== */
.mag-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(14px,1.6vw,22px)}
.mcard{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:18px;overflow:hidden;background:#fff;transition:border-color .4s,transform .55s var(--slow),box-shadow .55s}
.mcard:hover{border-color:var(--teal);transform:translateY(-5px);box-shadow:0 28px 52px -36px rgba(42,117,115,.8)}
.mcard-media{display:block;aspect-ratio:16/9;background:linear-gradient(150deg,var(--teal-d),#0c2827);overflow:hidden}
.mcard-media img{width:100%;height:100%;object-fit:cover;opacity:0;filter:blur(10px);transform:scale(1.05);transition:opacity .7s var(--ease),filter .8s,transform 1.2s var(--slow)}
.mcard-media img.is-loaded{opacity:1;filter:none;transform:none}
.mcard:hover .mcard-media img.is-loaded{transform:scale(1.04)}
.mcard-body{display:flex;flex-direction:column;gap:10px;padding:clamp(18px,2vw,26px);flex:1}
.mcard-body time{font-size:11.5px;font-weight:700;color:var(--teal);letter-spacing:0}
.mcard-body h2{margin:0;font-size:16.5px;font-weight:700;line-height:1.85;letter-spacing:0;max-width:none}
.mcard-body p{margin:0;font-size:13px;color:var(--mute);line-height:2;flex:1}
.mcard-body .go{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;color:var(--mute);transition:color .3s}
.mcard:hover .go{color:var(--teal)}
.mcard-body .go svg{width:14px;height:14px}
html[dir="rtl"] .mcard-body .go svg{transform:scaleX(-1)}

.mag-pg{display:flex;justify-content:center;gap:8px;margin-block-start:clamp(30px,4vw,46px)}
.mag-pg a{min-width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:11px;font-size:13.5px;font-weight:700;transition:.3s}
.mag-pg a:hover{border-color:var(--teal);color:var(--teal)}
.mag-pg a.cur{background:var(--teal);border-color:var(--teal);color:#fff}

/* ---------- صفحهٔ مقاله ---------- */
.art-head h1{font-weight:800;font-size:clamp(1.6rem,3.4vw,2.6rem);line-height:1.7;letter-spacing:0;max-width:26ch}
.art-meta{display:flex;align-items:center;gap:12px;margin-block-start:16px;font-size:13px;font-weight:600;color:var(--mute)}
.pagehead.has-img .art-meta{color:rgba(255,255,255,.8)}
.art-meta time{color:var(--teal);letter-spacing:0}
.pagehead.has-img .art-meta time{color:#a8dedb}
.art-meta .sep{width:4px;height:4px;border-radius:50%;background:currentColor;opacity:.5}

.art-sec .wrap{max-width:860px}
.art-body{font-size:15.5px;line-height:2.3;color:#202725}
.art-body p{margin:0 0 20px}
.art-body h2{font-size:clamp(1.15rem,2vw,1.45rem);font-weight:800;letter-spacing:0;line-height:1.8;margin:36px 0 14px;max-width:none;color:var(--ink)}
.art-body h2::before{content:"";display:inline-block;width:22px;height:3px;border-radius:3px;background:var(--teal);vertical-align:middle;margin-inline-end:10px}
.art-body h3{font-size:1.05rem;font-weight:700;margin:28px 0 10px}
.art-body ul,.art-body ol{margin:0 0 20px;padding-inline-start:22px}
.art-body li{margin-block-end:8px}
.art-body a{color:var(--teal);border-bottom:1px solid rgba(42,117,115,.35);transition:border-color .25s}
.art-body a:hover{border-color:var(--teal)}
.art-body img{border-radius:14px;margin-block:8px 20px}
.art-body strong{font-weight:700}
.art-body blockquote{margin:0 0 20px;padding:16px 20px;border-inline-start:3px solid var(--teal);background:var(--wash);border-radius:0 12px 12px 0;color:#333b38}
html[dir="rtl"] .art-body blockquote{border-radius:12px 0 0 12px}

/* بدنهٔ دوزبانه — با سوییچ زبان سایت جابه‌جا می‌شود */
html[lang="fa"] .art-body.b-en{display:none}
html[lang="en"] .art-body.b-fa{display:none}
html[lang="en"] .art-body.b-en ~ .b-note-only-fa{display:none}
/* اگر نسخهٔ انگلیسی وجود نداشته باشد، فارسی در هر دو زبان نمایش داده می‌شود */
html[lang="en"] .art-body.b-fa:only-of-type{display:block}

.art-note{display:flex;gap:12px;align-items:flex-start;margin-block-start:34px;padding:16px 18px;border:1px solid rgba(42,117,115,.25);background:rgba(42,117,115,.06);border-radius:14px}
.art-note svg{width:18px;height:18px;color:var(--teal);flex:none;margin-block-start:5px}
.art-note p{margin:0;font-size:12.5px;line-height:2;color:#333b38}

.art-foot{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;margin-block-start:34px;padding-block-start:26px;border-block-start:1px solid var(--hair)}

@media (max-width:1080px){ .mag-grid{grid-template-columns:repeat(2,1fr)} }
@media (max-width:640px){ .mag-grid{grid-template-columns:1fr} .art-foot{flex-direction:column} .art-foot .cta,.art-foot .ghost{justify-content:center} }


/* ---------- صفحهٔ آزمایش: بخش‌های دوستونه ---------- */
.tsec-wide .wrap{max-width:var(--maxw)}
.tsec-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(14px,1.8vw,24px);align-items:start}
.tsec{border:1px solid var(--line);border-radius:18px;background:#fff;padding:clamp(20px,2.4vw,30px);transition:border-color .4s}
.tsec:hover{border-color:var(--teal)}
.tsec > h2{margin:0 0 14px;font-size:15.5px;font-weight:800;letter-spacing:0;line-height:1.8;max-width:none;display:flex;align-items:center;gap:10px}
.tsec > h2::before{content:"";width:22px;height:3px;border-radius:3px;background:var(--teal);flex:none}
.tsec .art-body{font-size:13.5px;line-height:2.15}
.tsec .art-body p{margin:0 0 14px}
.tsec .art-body ul,.tsec .art-body ol{margin:0 0 14px;padding-inline-start:20px}
.tsec .art-body li{margin-block-end:6px}
.tsec .art-body hr{border:0;border-top:1px solid var(--hair);margin:14px 0}
.tsec .art-body h3,.tsec .art-body h4{font-size:13.5px;font-weight:700;margin:18px 0 8px}
html[lang="fa"] .tsec-grid.b-en{display:none}
html[lang="en"] .tsec-grid.b-fa{display:none}
html[lang="en"] .tsec-grid.b-fa:only-of-type{display:grid}
@media (max-width:880px){ .tsec-grid{grid-template-columns:1fr} }

/* عنوان صفحهٔ آزمایش — همیشه یک خط */
.ph-test .art-head h1{font-size:clamp(1.1rem,2.6vw,2rem);line-height:1.9;max-width:none;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}


/* ===================== راهنمای آزمایش‌ها (طراحی تمیز) ===================== */
.lt-head{text-align:center}
.lt-head .crumb{justify-content:center}
.lt-head h1{margin-inline:auto;font-size:clamp(1.5rem,3.6vw,2.9rem);white-space:nowrap;max-width:none}
.lt-search{display:flex;align-items:center;gap:12px;border:1px solid var(--line);border-radius:999px;
  padding:6px 10px 6px 22px;background:#fff;max-width:620px;margin:clamp(22px,3vw,32px) auto 0;
  box-shadow:0 18px 44px -30px rgba(0,0,0,.35);transition:border-color .3s,box-shadow .3s}
html[dir="rtl"] .lt-search{padding:6px 22px 6px 10px}
.lt-search:focus-within{border-color:var(--teal);box-shadow:0 18px 44px -26px rgba(42,117,115,.55)}
.lt-search svg{width:18px;height:18px;color:var(--mute);flex:none}
.lt-search input{flex:1;border:0;outline:0;font:inherit;font-size:14.5px;padding:12px 0;background:none;min-width:0}
.lt-count{flex:none;font-size:12px;font-weight:600;color:#fff;background:var(--teal);padding:8px 14px;border-radius:999px}
.lt-chips{display:flex;flex-wrap:wrap;justify-content:center;gap:9px;margin-block-start:clamp(18px,2.4vw,26px);max-width:760px;margin-inline:auto}
.lt-chip{border:1px solid var(--line);border-radius:999px;background:#fff;padding:9px 17px;
  font-size:12.5px;font-weight:600;line-height:1.7;cursor:pointer;transition:.3s}
.lt-chip:hover{border-color:var(--teal);color:var(--teal);transform:translateY(-2px)}
.lt-chip.on{background:var(--teal);border-color:var(--teal);color:#fff}

.lt-sec{padding-block-start:clamp(30px,4vh,48px)}
.lt-panel{position:relative;border:1px solid rgba(42,117,115,.25);background:var(--wash);border-radius:18px;
  padding:clamp(22px,2.8vw,36px);margin-block-end:clamp(24px,3vw,36px);
  font-size:14px;line-height:2.2;scroll-margin-top:96px;max-width:900px;margin-inline:auto}
.lt-panel h2{font-size:clamp(1.05rem,1.8vw,1.3rem);font-weight:800;margin:0 0 14px;max-width:none;letter-spacing:0}
.lt-panel h3,.lt-panel h4,.lt-panel h5{font-size:14.5px;font-weight:700;margin:22px 0 8px}
.lt-panel ul{margin:0 0 14px;padding-inline-start:20px}
.lt-panel li{margin-block-end:6px}
.lt-close{position:absolute;inset-block-start:14px;inset-inline-end:16px;width:32px;height:32px;
  border:1px solid var(--line);border-radius:50%;background:#fff;font-size:18px;line-height:1;
  color:var(--mute);cursor:pointer;transition:.25s}
.lt-close:hover{border-color:var(--teal);color:var(--teal)}

.lt-group{display:grid;grid-template-columns:56px minmax(0,1fr);gap:clamp(14px,2vw,26px);
  padding-block:clamp(18px,2.2vw,26px);border-block-start:1px solid var(--hair)}
.lt-group:first-child{border-block-start:0}
.lt-group[hidden]{display:none}
.lt-letter{font-family:var(--mono);font-size:clamp(1.3rem,2vw,1.7rem);font-weight:600;color:var(--teal);
  line-height:1;padding-block-start:6px}
.lt-links{columns:3;column-gap:clamp(18px,2.4vw,34px)}
.lt-links a{display:block;break-inside:avoid;font-size:13px;font-weight:500;line-height:1.9;
  padding:5px 0;color:#2c3331;border-bottom:1px solid transparent;transition:color .25s}
.lt-links a:hover{color:var(--teal)}
.lt-links a[hidden]{display:none}
.lt-empty{margin-block-start:22px;font-size:13.5px;color:var(--mute);text-align:center}
@media (max-width:1000px){ .lt-links{columns:2} }
@media (max-width:640px){
  .lt-links{columns:1}
  .lt-group{grid-template-columns:36px 1fr}
  .lt-chip{padding:8px 13px;font-size:12px}
}