/* ============================================================
   جهاد نفت و گاز — سیستم طراحی مشترک
   پایه‌ی روشن و مدرن · برند پترولیوم‌تیل · امضای انرژی کهربایی
   ============================================================ */

/* ---------- فونت‌های محلی (میزبانی محلی، بدون هیچ CDN) ---------- */
@font-face{font-family:"Vazirmatn";font-style:normal;font-weight:200;font-display:swap;src:url(../fonts/Vazirmatn-200.woff2) format("woff2")}
@font-face{font-family:"Vazirmatn";font-style:normal;font-weight:300;font-display:swap;src:url(../fonts/Vazirmatn-300.woff2) format("woff2")}
@font-face{font-family:"Vazirmatn";font-style:normal;font-weight:400;font-display:swap;src:url(../fonts/Vazirmatn-400.woff2) format("woff2")}
@font-face{font-family:"Vazirmatn";font-style:normal;font-weight:500;font-display:swap;src:url(../fonts/Vazirmatn-500.woff2) format("woff2")}
@font-face{font-family:"Vazirmatn";font-style:normal;font-weight:600;font-display:swap;src:url(../fonts/Vazirmatn-600.woff2) format("woff2")}
@font-face{font-family:"Vazirmatn";font-style:normal;font-weight:700;font-display:swap;src:url(../fonts/Vazirmatn-700.woff2) format("woff2")}
@font-face{font-family:"Vazirmatn";font-style:normal;font-weight:800;font-display:swap;src:url(../fonts/Vazirmatn-800.woff2) format("woff2")}
@font-face{font-family:"Vazirmatn";font-style:normal;font-weight:900;font-display:swap;src:url(../fonts/Vazirmatn-900.woff2) format("woff2")}
@font-face{font-family:"Markazi Text";font-style:normal;font-weight:400 700;font-display:swap;src:url(../fonts/MarkaziText-arabic.woff2) format("woff2");unicode-range:U+0600-06FF,U+0750-077F,U+0870-088E,U+08A0-08FF,U+200C-200E,U+2010-2011,U+204F,U+2E41,U+FB50-FDFF,U+FE70-FE74,U+FE76-FEFC}
@font-face{font-family:"Markazi Text";font-style:normal;font-weight:400 700;font-display:swap;src:url(../fonts/MarkaziText-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}

:root{
  /* رنگ‌ها */
  --paper:#F4F8FA;        /* پس‌زمینه‌ی اصلیِ روشن و خنک */
  --paper-2:#EAF1F4;      /* پنل ملایم */
  --surface:#FFFFFF;
  --ink:#0B2A3B;          /* سرمه‌ای پترولیومی — متن و بخش‌های تیره */
  --ink-2:#143246;
  --muted:#4D6877;        /* متن ثانویه */
  --muted-2:#7791A0;
  --petrol:#0C6E70;       /* رنگ برند */
  --petrol-d:#075456;
  --petrol-l:#159A9C;
  --petrol-tint:#E2F0F0;
  --amber:#F2A23C;        /* امضای انرژی ۱ */
  --coral:#E25C2B;        /* امضای انرژی ۲ */
  --gold-ink:#B7791F;
  --line:#D7E3E9;         /* خطوط مو */
  --line-2:#C3D5DD;
  --shadow-sm:0 1px 2px rgba(11,42,59,.06), 0 2px 8px rgba(11,42,59,.05);
  --shadow-md:0 6px 18px rgba(11,42,59,.08), 0 18px 50px rgba(11,42,59,.07);
  --shadow-lg:0 20px 60px rgba(8,42,55,.18);

  --grad-energy:linear-gradient(120deg, var(--amber), var(--coral));
  --grad-energy-soft:linear-gradient(120deg, #FBD9A6, #F2A88A);
  --grad-petrol:linear-gradient(135deg, var(--petrol), var(--petrol-d));

  --container:1200px;
  --radius:18px;
  --radius-sm:12px;
  --radius-lg:26px;

  --font-body:"Vazirmatn", "Tahoma", system-ui, sans-serif;
  --font-display:"Markazi Text", "Vazirmatn", "Times New Roman", serif;

  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}

html{scroll-behavior:smooth}

body{
  margin:0;
  font-family:var(--font-body);
  background:var(--paper);
  color:var(--ink);
  line-height:1.85;
  font-size:16.5px;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}

img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{margin:0;padding:0;list-style:none}

/* ---------- تایپوگرافی ---------- */
.display{font-family:var(--font-display);font-weight:700;line-height:1.12;letter-spacing:0}
h1,h2,h3{font-family:var(--font-display);font-weight:700;line-height:1.15;margin:0}
.eyebrow{
  font-family:var(--font-body);
  font-weight:700;font-size:.78rem;letter-spacing:.14em;
  color:var(--petrol);text-transform:none;
  display:inline-flex;align-items:center;gap:.5rem;
}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--grad-energy);border-radius:2px}
.lead{font-size:1.18rem;color:var(--muted);line-height:2;font-weight:400}

.grad-text{
  background:var(--grad-energy);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}

/* ---------- چیدمان ---------- */
.container{max-width:var(--container);margin-inline:auto;padding-inline:clamp(20px,5vw,48px)}
.section{padding-block:clamp(64px,9vw,118px)}
.section--tight{padding-block:clamp(48px,6vw,80px)}
.center{text-align:center}
.section__head{max-width:720px;margin-inline:auto;margin-bottom:clamp(36px,5vw,60px)}
.section__head .lead{margin-top:1rem}
.section--dark{background:var(--ink);color:#DCEAF0}
.section--dark h2{color:#fff}
.section--dark .lead{color:#9FBDCB}
.section--paper2{background:var(--paper-2)}

/* ---------- دکمه‌ها ---------- */
.btn{
  --bg:var(--petrol);--fg:#fff;
  display:inline-flex;align-items:center;gap:.6rem;
  background:var(--bg);color:var(--fg);
  font-family:var(--font-body);font-weight:700;font-size:.98rem;
  padding:.86em 1.5em;border-radius:999px;border:1px solid transparent;
  cursor:pointer;transition:transform .25s var(--ease), box-shadow .25s var(--ease), background .25s;
  box-shadow:0 8px 20px rgba(12,110,112,.22);
}
.btn:hover{transform:translateY(-2px);box-shadow:0 14px 28px rgba(12,110,112,.3)}
.btn:active{transform:translateY(0)}
.btn .arr{transition:transform .25s var(--ease)}
.btn:hover .arr{transform:translateX(-4px)}
.btn--ghost{
  background:transparent;color:var(--ink);border-color:var(--line-2);
  box-shadow:none;
}
.btn--ghost:hover{border-color:var(--petrol);color:var(--petrol);box-shadow:none}
.btn--energy{background:var(--grad-energy);box-shadow:0 8px 22px rgba(226,92,43,.28)}
.btn--energy:hover{box-shadow:0 14px 30px rgba(226,92,43,.34)}
.btn--light{background:#fff;color:var(--ink);box-shadow:var(--shadow-sm)}
.btn--on-dark{background:#fff;color:var(--ink)}
.btn--on-dark.btn--ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.3)}
.btn--on-dark.btn--ghost:hover{border-color:#fff;color:#fff}

/* ============================================================
   ناوبری
   ============================================================ */
.nav{
  position:sticky;top:0;z-index:100;
  background:rgba(244,248,250,.82);
  backdrop-filter:saturate(160%) blur(14px);
  -webkit-backdrop-filter:saturate(160%) blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .3s, background .3s, box-shadow .3s;
}
.nav.is-scrolled{border-color:var(--line);box-shadow:0 6px 24px rgba(11,42,59,.05)}
.nav__inner{
  max-width:var(--container);margin-inline:auto;
  padding:.7rem clamp(20px,5vw,48px);
  display:flex;align-items:center;justify-content:space-between;gap:1rem;
}
.brand{display:flex;align-items:center;gap:.7rem}
.brand__mark{width:42px;height:42px;flex:none}
.brand__text{display:flex;flex-direction:column;line-height:1.05}
.brand__name{font-family:var(--font-display);font-weight:700;font-size:1.32rem;color:var(--ink)}
.brand__sub{font-size:.66rem;color:var(--muted);font-weight:600;letter-spacing:.04em}

.menu{display:flex;align-items:center;gap:.2rem}
.menu__link{
  position:relative;
  padding:.55rem .85rem;border-radius:10px;
  font-weight:600;font-size:.96rem;color:var(--ink-2);
  transition:color .2s, background .2s;
}
.menu__link:hover{color:var(--petrol);background:var(--petrol-tint)}
.menu__link.is-active{color:var(--petrol)}
.menu__link.is-active::after{
  content:"";position:absolute;inset-inline:.85rem;bottom:.18rem;height:2px;
  background:var(--grad-energy);border-radius:2px;
}

/* زیرمنوی پروژه‌ها */
.has-drop{position:relative}
.drop__btn{display:inline-flex;align-items:center;gap:.35rem;background:none;border:none;font:inherit;cursor:pointer}
.drop__btn .chev{width:14px;height:14px;transition:transform .25s var(--ease)}
.has-drop.is-open .chev{transform:rotate(180deg)}
.drop{
  position:absolute;top:calc(100% + 10px);inset-inline-end:0;
  min-width:290px;background:var(--surface);
  border:1px solid var(--line);border-radius:16px;
  box-shadow:var(--shadow-md);padding:.5rem;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .22s var(--ease), transform .22s var(--ease), visibility .22s;
}
.has-drop.is-open .drop{opacity:1;visibility:visible;transform:translateY(0)}
.drop__item{display:flex;gap:.75rem;align-items:flex-start;padding:.62rem .7rem;border-radius:11px;transition:background .18s}
.drop__item:hover{background:var(--paper-2)}
.drop__num{
  font-family:var(--font-display);font-weight:700;font-size:1.05rem;
  width:30px;height:30px;flex:none;display:grid;place-items:center;border-radius:9px;
  background:var(--petrol-tint);color:var(--petrol);
}
.drop__t{font-weight:700;font-size:.95rem;color:var(--ink);line-height:1.4}
.drop__d{font-size:.78rem;color:var(--muted);line-height:1.5}

.nav__cta{margin-inline-start:.4rem}
.nav__toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);
  background:#fff;border-radius:12px;cursor:pointer;align-items:center;justify-content:center;
}
.nav__toggle span{position:relative;width:20px;height:2px;background:var(--ink);border-radius:2px;transition:.25s}
.nav__toggle span::before,.nav__toggle span::after{content:"";position:absolute;left:0;width:20px;height:2px;background:var(--ink);border-radius:2px;transition:.25s}
.nav__toggle span::before{top:-6px}
.nav__toggle span::after{top:6px}
body.menu-open .nav__toggle span{background:transparent}
body.menu-open .nav__toggle span::before{top:0;transform:rotate(45deg)}
body.menu-open .nav__toggle span::after{top:0;transform:rotate(-45deg)}

/* ============================================================
   هیرو + شبکه‌ی انرژی
   ============================================================ */
.hero{position:relative;overflow:hidden;background:
  radial-gradient(1100px 560px at 78% -8%, #E7F4F4 0%, rgba(231,244,244,0) 60%),
  radial-gradient(900px 520px at 8% 110%, #FBEAD7 0%, rgba(251,234,215,0) 55%),
  var(--paper);
}
.hero__topo{position:absolute;inset:0;opacity:.5;pointer-events:none;z-index:0}
.hero__inner{
  max-width:var(--container);margin-inline:auto;
  padding:clamp(54px,8vw,96px) clamp(20px,5vw,48px) clamp(60px,8vw,90px);
  display:grid;grid-template-columns:1.02fr .98fr;gap:clamp(28px,4vw,56px);align-items:center;
  position:relative;z-index:1;
}
.hero__copy{max-width:560px}
.hero h1{
  font-size:clamp(2.7rem,6.4vw,4.7rem);font-weight:700;
  letter-spacing:-.01em;margin:.6rem 0 .1rem;
}
.hero h1 .accent{color:var(--petrol)}
.hero__strap{font-size:clamp(1.05rem,2.3vw,1.32rem);color:var(--muted);line-height:1.95;margin:1.1rem 0 1.8rem;max-width:30em}
.hero__cta{display:flex;flex-wrap:wrap;gap:.8rem}
.hero__note{margin-top:1.6rem;font-size:.86rem;color:var(--muted-2);display:flex;align-items:center;gap:.5rem}
.hero__note::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--petrol-l);box-shadow:0 0 0 4px rgba(21,154,156,.16)}

.mesh-wrap{position:relative;aspect-ratio:920/560;width:100%}
.mesh{width:100%;height:100%;overflow:visible}

/* انیمیشن شبکه */
.mesh .link{stroke:var(--line-2);stroke-width:1.4;fill:none}
.mesh .link.flow{stroke:url(#flowgrad);stroke-width:2;stroke-dasharray:5 12;animation:flowdash 2.6s linear infinite}
.mesh .reroute{stroke:url(#egrad);stroke-width:2.4;opacity:.07;animation:reroute 7s ease-in-out infinite}
.mesh .node{fill:var(--petrol)}
.mesh .node.dim{fill:var(--muted-2)}
.mesh .hub-glow{fill:url(#hubglow);animation:pulse 4.2s ease-in-out infinite}
.mesh .hub{fill:url(#egrad)}
.mesh .fail{animation:failnode 7s ease-in-out infinite}
.mesh .failx{opacity:0;animation:failx 7s ease-in-out infinite}
.mesh .failring{fill:none;stroke:var(--coral);stroke-width:2;opacity:0;animation:failx 7s ease-in-out infinite}

@keyframes flowdash{to{stroke-dashoffset:-34}}
@keyframes pulse{0%,100%{opacity:.55;transform:scale(1)}50%{opacity:.95;transform:scale(1.12)}}
@keyframes reroute{0%,58%{opacity:.07}68%,90%{opacity:.92}100%{opacity:.07}}
@keyframes failnode{0%,58%{opacity:1}70%,90%{opacity:.18}100%{opacity:1}}
@keyframes failx{0%,58%{opacity:0}70%,90%{opacity:1}100%{opacity:0}}
.mesh .hub-glow{transform-box:fill-box;transform-origin:center}

.mesh-cap{
  position:absolute;inset-inline-start:0;bottom:-6px;
  background:rgba(255,255,255,.78);backdrop-filter:blur(6px);
  border:1px solid var(--line);border-radius:12px;
  padding:.5rem .9rem;font-size:.82rem;color:var(--ink-2);font-weight:600;
  box-shadow:var(--shadow-sm);max-width:18em;line-height:1.5;
}
.mesh-cap b{color:var(--petrol)}

/* ============================================================
   کارت‌ها / شبکه‌بندی‌ها
   ============================================================ */
.grid{display:grid;gap:clamp(18px,2.4vw,26px)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}

.card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:clamp(22px,2.6vw,32px);
  box-shadow:var(--shadow-sm);transition:transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s;
  position:relative;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-2)}
.card__ic{
  width:52px;height:52px;border-radius:14px;display:grid;place-items:center;
  background:var(--petrol-tint);color:var(--petrol);margin-bottom:1.1rem;
}
.card__ic svg{width:26px;height:26px}
.card h3{font-size:1.5rem;margin-bottom:.5rem}
.card p{color:var(--muted);font-size:1rem;margin:0}

/* پیلر/ستون با امضای انرژی */
.pillar .card__ic{background:var(--grad-energy-soft);color:#fff}
.pillar .card__ic svg{filter:drop-shadow(0 1px 1px rgba(180,90,30,.4))}

/* ============================================================
   مشکل/راهکار (پارادایم)
   ============================================================ */
.shift{display:grid;grid-template-columns:1fr auto 1fr;gap:clamp(16px,3vw,40px);align-items:stretch}
.shift__card{border-radius:var(--radius);padding:clamp(24px,3vw,38px);border:1px solid var(--line)}
.shift__card--problem{background:#fff;position:relative}
.shift__card--problem::before{content:"";position:absolute;inset-block:24px;inset-inline-start:0;width:4px;border-radius:4px;background:linear-gradient(var(--coral),#c94d23)}
.shift__card--solution{background:var(--grad-petrol);color:#EAF7F7;border-color:transparent}
.shift__card--solution h3{color:#fff}
.shift__tag{font-weight:700;font-size:.78rem;letter-spacing:.06em;padding:.3em .8em;border-radius:999px;display:inline-block;margin-bottom:1rem}
.shift__card--problem .shift__tag{background:#FCEBE3;color:var(--coral)}
.shift__card--solution .shift__tag{background:rgba(255,255,255,.16);color:#fff}
.shift__card h3{font-size:1.7rem;margin-bottom:1rem}
.shift__list li{display:flex;gap:.7rem;padding:.4rem 0;font-size:1rem}
.shift__list li::before{content:"";width:7px;height:7px;border-radius:50%;margin-top:.7em;flex:none}
.shift__card--problem .shift__list li::before{background:var(--coral)}
.shift__card--solution .shift__list li{color:#D6EEEE}
.shift__card--solution .shift__list li::before{background:var(--amber)}
.shift__arrow{display:grid;place-items:center;color:var(--petrol)}
.shift__arrow svg{width:46px;height:46px}

/* ============================================================
   نمایش چهار پروژه
   ============================================================ */
.projects{display:grid;grid-template-columns:repeat(2,1fr);gap:clamp(18px,2.4vw,26px)}
.proj{
  position:relative;display:block;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow-sm);transition:transform .35s var(--ease), box-shadow .35s var(--ease);
}
.proj:hover{transform:translateY(-5px);box-shadow:var(--shadow-md)}
.proj__media{
  aspect-ratio:16/9;position:relative;overflow:hidden;
  display:grid;place-items:center;color:#fff;
}
.proj__media .ill{position:absolute;inset:0;width:100%;height:100%}
.proj__num{
  position:absolute;inset-block-start:16px;inset-inline-end:16px;z-index:2;
  font-family:var(--font-display);font-weight:700;font-size:1.05rem;
  background:rgba(255,255,255,.92);color:var(--ink);
  width:40px;height:40px;border-radius:11px;display:grid;place-items:center;
  box-shadow:var(--shadow-sm);
}
.proj__body{padding:clamp(20px,2.4vw,28px)}
.proj__cat{font-size:.74rem;font-weight:700;letter-spacing:.08em;color:var(--petrol);margin-bottom:.5rem}
.proj__body h3{font-size:1.55rem;margin-bottom:.5rem;line-height:1.25}
.proj__body p{color:var(--muted);margin:0 0 1rem;font-size:.98rem}
.proj__more{display:inline-flex;align-items:center;gap:.45rem;font-weight:700;color:var(--petrol);font-size:.95rem}
.proj__more .arr{transition:transform .25s var(--ease)}
.proj:hover .proj__more .arr{transform:translateX(-5px)}

/* تصاویرِ تزئینی پروژه (SVG)؛ قابل جایگزینی با عکس/ویدئو */
.ill-grad-1{background:linear-gradient(135deg,#0C6E70,#0a4f51)}
.ill-grad-2{background:linear-gradient(135deg,#10557a,#0b3a54)}
.ill-grad-3{background:linear-gradient(135deg,#13654f,#0c4838)}
.ill-grad-4{background:linear-gradient(135deg,#e07a2c,#c1481f)}

/* ============================================================
   نوار آمار
   ============================================================ */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(16px,3vw,30px)}
.stat{padding:1rem .5rem}
.stat__num{font-family:var(--font-display);font-weight:700;font-size:clamp(2.4rem,5vw,3.4rem);line-height:1;letter-spacing:-.01em}
.section--dark .stat__num{color:#fff}
.stat__num .u{font-size:.42em;font-weight:700;color:var(--amber);margin-inline-start:.25rem;font-family:var(--font-body)}
.stat__label{margin-top:.6rem;font-size:.92rem;color:var(--muted)}
.section--dark .stat__label{color:#9FBDCB}

/* ============================================================
   بخش ویژه‌ی سامانه (تیره)
   ============================================================ */
.feature{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(30px,5vw,64px);align-items:center}
.feature__visual{
  position:relative;aspect-ratio:1/1;border-radius:var(--radius-lg);
  background:radial-gradient(120% 120% at 30% 20%, #11455a, #0a2230);
  border:1px solid rgba(255,255,255,.08);overflow:hidden;display:grid;place-items:center;
}
.golden{
  background:rgba(242,162,60,.1);border:1px solid rgba(242,162,60,.32);
  border-radius:14px;padding:1.1rem 1.3rem;margin-top:1.6rem;
  font-weight:600;color:#F6D9A8;line-height:1.8;font-size:1.02rem;
}
.golden b{color:var(--amber)}

/* فهرست اجزای سامانه */
.feat-list{display:grid;gap:.9rem;margin-top:.4rem}
.feat-row{display:flex;gap:.9rem;align-items:flex-start}
.feat-row .dot{width:34px;height:34px;border-radius:10px;flex:none;display:grid;place-items:center;background:rgba(255,255,255,.07);color:var(--amber)}
.feat-row b{color:#fff;font-weight:700}
.feat-row span{color:#9FBDCB;font-size:.95rem}

/* ============================================================
   نوار CTA
   ============================================================ */
.cta-band{background:
  radial-gradient(900px 400px at 85% 0%, rgba(242,162,60,.18), transparent 60%),
  var(--grad-petrol);
  color:#fff;border-radius:var(--radius-lg);
  padding:clamp(40px,6vw,72px);text-align:center;position:relative;overflow:hidden;
}
.cta-band h2{font-size:clamp(2rem,4.5vw,3rem);color:#fff;margin-bottom:.8rem}
.cta-band p{color:#CFE9E9;max-width:42em;margin:0 auto 2rem;font-size:1.12rem}

/* ============================================================
   پنجره‌ی رسانه (عکس/ویدئو جایگزین‌شونده)
   ============================================================ */
.media-slot{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  aspect-ratio:21/9;background:linear-gradient(135deg,#0d3346,#0a2533);
  display:grid;place-items:center;border:1px solid var(--line);box-shadow:var(--shadow-md);
}
.media-slot__topo{position:absolute;inset:0;opacity:.22}
.media-slot__inner{position:relative;text-align:center;color:#CFE3EC;padding:2rem}
.media-slot__play{
  width:74px;height:74px;border-radius:50%;margin:0 auto 1rem;
  display:grid;place-items:center;background:var(--grad-energy);
  box-shadow:0 14px 40px rgba(226,92,43,.4);
}
.media-slot__play svg{width:30px;height:30px;margin-inline-start:-3px}
.media-slot__inner b{color:#fff;font-size:1.15rem;display:block}
.media-slot__inner span{font-size:.85rem;color:#8FB0C0}
.media-slot video,.media-slot img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}

/* ============================================================
   صفحات داخلی — هدر صفحه
   ============================================================ */
.page-hero{position:relative;overflow:hidden;background:
  radial-gradient(900px 460px at 85% -20%, #E7F4F4, transparent 60%),var(--paper);
  padding-block:clamp(48px,7vw,86px);border-bottom:1px solid var(--line);
}
.page-hero__topo{position:absolute;inset:0;opacity:.45}
.crumb{font-size:.85rem;color:var(--muted);margin-bottom:1rem;display:flex;gap:.5rem;align-items:center}
.crumb a:hover{color:var(--petrol)}
.crumb .sep{color:var(--line-2)}
.page-hero h1{font-size:clamp(2.3rem,5.5vw,3.8rem);letter-spacing:-.01em}
.page-hero .lead{margin-top:1rem;max-width:46em}
.page-hero .tagchip{
  display:inline-flex;align-items:center;gap:.5rem;margin-bottom:1.1rem;
  background:var(--petrol-tint);color:var(--petrol);font-weight:700;font-size:.82rem;
  padding:.4em 1em;border-radius:999px;
}
.page-hero .tagchip .n{font-family:var(--font-display);font-size:1rem}

/* چیدمان دوستونی و پنل نمایش پروژه */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(28px,4vw,56px);align-items:center}
.show-panel{position:relative;aspect-ratio:5/4;border-radius:var(--radius-lg);overflow:hidden;display:grid;place-items:center;box-shadow:var(--shadow-md);border:1px solid var(--line)}
.show-panel .ill{position:absolute;inset:0;width:100%;height:100%}
.highlights{display:grid;gap:.7rem;margin-top:1.5rem}
.highlights li{display:flex;gap:.7rem;align-items:flex-start;font-size:1.04rem;color:var(--ink-2)}
.highlights li svg{flex:none;margin-top:.35rem;color:var(--petrol)}
@media (max-width:980px){.split{grid-template-columns:1fr;gap:2rem}}

/* بلوک مأموریت/رویکرد */
.mission{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,60px);align-items:start}
.approach{display:grid;gap:1rem}
.approach__row{
  display:flex;gap:1.1rem;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:1.3rem 1.4rem;box-shadow:var(--shadow-sm);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease);
}
.approach__row:hover{transform:translateX(-4px);box-shadow:var(--shadow-md)}
.approach__n{
  font-family:var(--font-display);font-weight:700;font-size:1.3rem;flex:none;
  width:42px;height:42px;border-radius:11px;display:grid;place-items:center;
  background:var(--grad-energy);color:#fff;
}
.approach__t b{display:block;font-size:1.12rem;color:var(--ink);font-weight:700;margin-bottom:.2rem}
.approach__t span{color:var(--muted);font-size:.97rem}

.figband{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;margin-top:2rem}
.figband .fig{background:var(--surface);padding:1.4rem 1.2rem;text-align:center}
.figband .fig b{font-family:var(--font-display);font-size:2rem;display:block;color:var(--petrol)}
.figband .fig span{font-size:.85rem;color:var(--muted)}

/* ناوبری بین پروژه‌ها */
.prevnext{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin-top:1rem}
.prevnext a{display:flex;flex-direction:column;gap:.2rem;padding:1.2rem 1.4rem;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);transition:border-color .25s,transform .25s}
.prevnext a:hover{border-color:var(--petrol);transform:translateY(-2px)}
.prevnext small{color:var(--muted);font-size:.8rem}
.prevnext b{font-weight:700;color:var(--ink)}
.prevnext .nx{text-align:start}

/* ============================================================
   فرم تماس
   ============================================================ */
.contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(28px,4vw,56px);align-items:start}
.field{margin-bottom:1.1rem}
.field label{display:block;font-weight:700;font-size:.9rem;margin-bottom:.45rem;color:var(--ink-2)}
.field input,.field textarea{
  width:100%;font:inherit;padding:.85em 1em;border-radius:12px;
  border:1px solid var(--line-2);background:var(--surface);color:var(--ink);
  transition:border-color .2s, box-shadow .2s;
}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--petrol);box-shadow:0 0 0 4px rgba(12,110,112,.12)}
.field textarea{min-height:140px;resize:vertical}
.form-note{font-size:.82rem;color:var(--muted);margin-top:.4rem}
.form-msg{display:none;margin-top:1rem;padding:1rem 1.2rem;border-radius:12px;background:var(--petrol-tint);color:var(--petrol-d);font-weight:600}
.form-msg.show{display:block;animation:rise .4s var(--ease)}

.info-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:clamp(22px,3vw,32px);box-shadow:var(--shadow-sm)}
.info-row{display:flex;gap:.9rem;padding:.9rem 0;border-bottom:1px dashed var(--line)}
.info-row:last-child{border-bottom:none}
.info-row .ic{width:42px;height:42px;border-radius:11px;flex:none;display:grid;place-items:center;background:var(--petrol-tint);color:var(--petrol)}
.info-row b{display:block;color:var(--ink);font-weight:700}
.info-row span{color:var(--muted);font-size:.92rem;word-break:break-word}

/* ============================================================
   فوتر
   ============================================================ */
.footer{background:var(--ink);color:#A9C4D2;padding-block:clamp(48px,6vw,72px) 0}
.footer__top{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:clamp(28px,5vw,56px);padding-bottom:2.5rem;border-bottom:1px solid rgba(255,255,255,.09)}
.footer__brand{display:flex;align-items:center;gap:.8rem;margin-bottom:1rem}
.footer__brand img{width:48px;height:48px;background:#fff;border-radius:10px;padding:3px}
.footer__brand .t b{display:block;font-family:var(--font-display);font-size:1.3rem;color:#fff}
.footer__brand .t span{font-size:.72rem;color:#7E9DAD}
.footer p{font-size:.92rem;color:#8FB0C0;line-height:1.9;max-width:34em;margin:0}
.footer h4{color:#fff;font-family:var(--font-body);font-size:.95rem;font-weight:700;margin:0 0 1rem}
.footer__links li{margin-bottom:.6rem}
.footer__links a{color:#A9C4D2;font-size:.92rem;transition:color .2s}
.footer__links a:hover{color:var(--amber)}
.footer__bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:.8rem;padding:1.4rem 0;font-size:.82rem;color:#7E9DAD}
.demo-badge{display:inline-flex;align-items:center;gap:.45rem;background:rgba(242,162,60,.12);color:var(--amber);border:1px solid rgba(242,162,60,.28);padding:.3em .8em;border-radius:999px;font-weight:700;font-size:.76rem}

/* ============================================================
   انیمیشن ورود اسکرول
   ============================================================ */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s var(--ease), transform .7s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}
.reveal[data-d="1"]{transition-delay:.08s}
.reveal[data-d="2"]{transition-delay:.16s}
.reveal[data-d="3"]{transition-delay:.24s}
.reveal[data-d="4"]{transition-delay:.32s}
@keyframes rise{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}

/* فوکوس قابل‌مشاهده */
:focus-visible{outline:3px solid var(--petrol-l);outline-offset:3px;border-radius:6px}

/* ============================================================
   ریسپانسیو
   ============================================================ */
@media (max-width:980px){
  .hero__inner{grid-template-columns:1fr;gap:2.5rem}
  .mesh-wrap{order:-1;max-width:560px;margin-inline:auto;width:100%}
  .feature,.mission,.contact-grid{grid-template-columns:1fr}
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}
  .footer__top{grid-template-columns:1fr 1fr}
}
@media (max-width:860px){
  .nav__cta{display:none}
  .nav__toggle{display:inline-flex}
  .menu{
    position:fixed;inset:64px 0 auto 0;flex-direction:column;align-items:stretch;
    gap:0;background:var(--surface);border-bottom:1px solid var(--line);
    padding:1rem clamp(20px,5vw,48px) 1.5rem;
    box-shadow:var(--shadow-lg);
    transform:translateY(-12px);opacity:0;visibility:hidden;
    transition:transform .3s var(--ease),opacity .3s,visibility .3s;
    max-height:calc(100vh - 64px);overflow:auto;
  }
  body.menu-open .menu{transform:translateY(0);opacity:1;visibility:visible}
  .menu__link{padding:.85rem .4rem;border-bottom:1px solid var(--line)}
  .menu__link.is-active::after{display:none}
  .has-drop{width:100%}
  .drop{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border:none;min-width:0;padding:.2rem 0 .6rem;display:none}
  .has-drop.is-open .drop{display:block}
  .drop__btn{width:100%;justify-content:space-between;padding:.85rem .4rem;border-bottom:1px solid var(--line)}
  .nav__cta.in-menu{display:inline-flex;margin:1rem 0 0;justify-content:center}
}
@media (max-width:680px){
  .shift{grid-template-columns:1fr}
  .shift__arrow{transform:rotate(90deg);padding:.4rem 0}
  .projects{grid-template-columns:1fr}
  .grid-3,.grid-4,.grid-2{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr 1fr;gap:1.6rem 1rem}
  .figband{grid-template-columns:1fr}
  .prevnext{grid-template-columns:1fr}
  .footer__top{grid-template-columns:1fr}
  .hero h1{font-size:clamp(2.4rem,11vw,3.2rem)}
}

/* احترام به کاهش حرکت */
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
  .mesh .flow,.mesh .reroute,.mesh .fail,.mesh .failx,.mesh .failring,.mesh .hub-glow{animation:none}
  .mesh .reroute{opacity:.5}
}

/* ============================================================
   نقشه‌ی تعاملی میادین (map.html)
   ============================================================ */
.map-toolbar{display:flex;flex-wrap:wrap;gap:.6rem;margin-bottom:1.6rem;justify-content:center}
.map-filter{
  display:inline-flex;align-items:center;gap:.5rem;cursor:pointer;
  background:var(--surface);border:1px solid var(--line-2);border-radius:999px;
  padding:.5em 1.05em;font-family:var(--font-body);font-weight:600;font-size:.92rem;color:var(--ink-2);
  transition:border-color .2s,color .2s,background .2s,box-shadow .2s;
}
.map-filter:hover{border-color:var(--petrol);color:var(--petrol)}
.map-filter.is-active{background:var(--petrol);color:#fff;border-color:transparent;box-shadow:0 8px 18px rgba(12,110,112,.22)}
.map-filter i{width:11px;height:11px;border-radius:50%;flex:none;display:inline-block}

.map-stage{display:grid;grid-template-columns:1.6fr .9fr;gap:clamp(18px,2.6vw,28px);align-items:start}
.map-canvas-wrap{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  background:radial-gradient(120% 120% at 30% 10%, #11455a, #08222d);
  border:1px solid rgba(255,255,255,.08);box-shadow:var(--shadow-md);padding:clamp(8px,1.5vw,16px);
}
#iranMap{width:100%;height:auto;display:block}

.map-layer{transition:opacity .35s var(--ease)}
.map-layer.layer-off{opacity:0;pointer-events:none}
.map-node{cursor:pointer}
.map-node .node-halo{transition:opacity .25s}
.map-node .node-ring{transition:stroke-width .25s}
.map-node:hover .node-halo{opacity:.42!important}
.map-node:hover .node-ring{stroke-width:3.4}
.net-unit{opacity:.5;animation:netpulse 3.4s ease-in-out infinite;animation-delay:calc(var(--i,0)*.045s)}
@keyframes netpulse{0%,100%{opacity:.28}50%{opacity:.82}}

.map-tip{
  position:absolute;z-index:6;pointer-events:none;
  background:var(--ink);color:#fff;font-family:var(--font-body);font-weight:600;font-size:.82rem;
  padding:.32em .7em;border-radius:8px;box-shadow:var(--shadow-md);white-space:nowrap;
}

.map-info{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:clamp(20px,2.4vw,28px);box-shadow:var(--shadow-sm);position:sticky;top:90px;
}
.map-info h3{font-size:1.4rem}
.map-legend{display:grid;gap:.9rem;margin:.2rem 0 1rem}
.map-legend li{display:flex;gap:.7rem;align-items:flex-start}
.map-legend .dot{width:13px;height:13px;border-radius:50%;flex:none;margin-top:.35rem}
.map-legend b{display:block;color:var(--ink);font-weight:700;font-size:.98rem}
.map-legend span{color:var(--muted);font-size:.85rem;line-height:1.5}
.map-hint{font-size:.85rem;color:var(--muted-2);border-top:1px dashed var(--line);padding-top:.9rem;margin:0}
.map-back{background:none;border:none;cursor:pointer;color:var(--petrol);font-family:var(--font-body);font-weight:700;font-size:.9rem;padding:0 0 .6rem;margin-bottom:.4rem}
.map-kind{display:inline-block;font-weight:700;font-size:.78rem;letter-spacing:.04em;margin-bottom:.3rem}
.map-info #tipDesc{color:var(--muted);font-size:.98rem}
.map-stats{margin-top:1rem}
.map-stat{background:var(--paper-2);border-radius:var(--radius-sm);padding:1rem 1.1rem}
.map-stat b{display:block;font-family:var(--font-display);font-size:1.5rem;color:var(--petrol)}
.map-stat span{font-size:.82rem;color:var(--muted)}

@media (max-width:900px){
  .map-stage{grid-template-columns:1fr}
  .map-info{position:static}
}