/* امیر استودیو — سیستمِ طراحی
   رنگ‌ها از پالتِ برند (کاه‌گلی، اسپرسو، آجری، سبزِ تیره)؛ نه نئون، نه گرادیانِ «تکنولوژی».
   تایپ: وزیرمتن با وزن‌های سنگین برای تیترها؛ فاصله‌ی سخاوتمند، لبه‌های تمیز، بافتِ کاغذی کم‌رنگ. */
@font-face { font-family: 'Vazirmatn'; src: url('/assets/fonts/Vazirmatn-wght.woff2') format('woff2'); font-weight: 100 900; font-display: swap; }

:root {
  --kah: #E8DCC8; --kah-2: #DFD1B8; --paper: #F7F1E6; --esp: #2A1F18; --esp-2: #4A3A2E; --brick: #B9472F; --brick-2: #9E3A25; --green: #3D6B5A; --line: rgba(42, 31, 24, .14);
  --radius: 22px; --wrap: 1200px; --pad: clamp(20px, 5vw, 48px);
  --fs-hero: clamp(34px, 4.7vw, 72px); --fs-h2: clamp(30px, 4.4vw, 56px); --fs-h3: clamp(21px, 2.1vw, 27px); --fs-body: clamp(16px, 1.25vw, 18.5px);
  --ease: cubic-bezier(.2, .7, .1, 1);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { font-family: 'Vazirmatn', system-ui, sans-serif; font-size: var(--fs-body); line-height: 1.85; color: var(--esp); background: var(--kah); font-feature-settings: 'ss01'; overflow-x: hidden; }
/* بافتِ کاغذ: نویزِ خیلی کم‌رنگ روی همه‌چیز */
body::before { content: ''; position: fixed; inset: 0; pointer-events: none; z-index: 100; opacity: .35; mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .16 0 0 0 0 .12 0 0 0 0 .09 0 0 0 .09 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E"); }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
::selection { background: var(--brick); color: var(--paper); }
:focus-visible { outline: 3px solid var(--brick); outline-offset: 3px; border-radius: 6px; }
.wrap { width: min(var(--wrap), 100% - 2 * var(--pad)); margin-inline: auto; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.en { direction: ltr; unicode-bidi: isolate; display: inline-block; font-feature-settings: normal; }
.logo, .en, [dir=ltr] { font-feature-settings: normal; }

/* ── سربرگ ── */
.top { position: sticky; top: 0; z-index: 50; transition: background .35s var(--ease), box-shadow .35s var(--ease); }
.top.scrolled { background: rgba(232, 220, 200, .86); backdrop-filter: blur(14px); box-shadow: 0 1px 0 var(--line); }
.top .wrap { display: flex; align-items: center; gap: 28px; height: 84px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 900; font-size: 25px; letter-spacing: -.5px; direction: ltr; }
.logo i { width: 12px; height: 12px; background: var(--brick); border-radius: 3px; transform: rotate(45deg); }
.nav { display: flex; gap: 6px; margin-inline-start: auto; }
.nav a { padding: 8px 16px; border-radius: 999px; font-weight: 600; font-size: 16px; color: var(--esp-2); transition: background .25s, color .25s; }
.nav a:hover, .nav a[aria-current] { background: rgba(42, 31, 24, .07); color: var(--esp); }
.menu-btn { display: none; margin-inline-start: auto; width: 46px; height: 46px; border-radius: 14px; border: 1.5px solid var(--line); background: transparent; cursor: pointer; }
.menu-btn span { display: block; width: 20px; height: 2px; background: var(--esp); margin: 5px auto; transition: transform .3s; }

/* ── دکمه‌ها ── */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 12px; padding: 16px 30px; border-radius: 999px; font-weight: 800; font-size: 17px; border: 0; cursor: pointer; transition: transform .3s var(--ease), background .3s, box-shadow .3s; white-space: nowrap; }
.btn .arr { transition: transform .3s var(--ease); }
.btn:hover .arr { transform: translateX(-5px); }
.btn-primary { background: var(--esp); color: var(--paper); box-shadow: 0 10px 24px rgba(42, 31, 24, .22); }
.btn-primary:hover { background: var(--brick); transform: translateY(-2px); }
.btn-ghost { background: transparent; color: var(--esp); box-shadow: inset 0 0 0 1.5px rgba(42, 31, 24, .3); }
.btn-ghost:hover { box-shadow: inset 0 0 0 1.5px var(--esp); }
.btn-sm { padding: 11px 22px; font-size: 15px; }

/* ── بخش‌ها ── */
section { position: relative; }
.sec { padding-block: clamp(80px, 11vw, 150px); }
.eyebrow { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; font-size: 14px; color: var(--brick); letter-spacing: .2px; margin-bottom: 18px; }
.eyebrow::before { content: ''; width: 26px; height: 2px; background: currentColor; }
h1, h2, h3 { line-height: 1.22; letter-spacing: -.6px; font-weight: 900; }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); letter-spacing: -.2px; }
.lead { font-size: clamp(18px, 1.6vw, 21px); color: var(--esp-2); max-width: 640px; }
.sec-head { display: grid; grid-template-columns: 1.25fr .75fr; gap: 40px; align-items: end; margin-bottom: clamp(44px, 6vw, 72px); }
.sec-head .lead { justify-self: end; }
.mark { background: linear-gradient(transparent 62%, rgba(185, 71, 47, .28) 62%); padding-inline: 4px; }

/* ── قهرمان ── */
.hero { padding-block: clamp(30px, 6vw, 70px) clamp(60px, 8vw, 110px); overflow: hidden; }
.hero .wrap { display: grid; grid-template-columns: 1.05fr .95fr; gap: clamp(30px, 5vw, 70px); align-items: center; }
.hero h1 { font-size: var(--fs-hero); line-height: 1.12; letter-spacing: -2px; }
.hero h1 .br { color: var(--brick); }
.hero .lead { margin-top: 28px; }
.hero .cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 40px; }
.hero .note { margin-top: 22px; font-size: 14.5px; color: var(--esp-2); display: flex; align-items: center; gap: 10px; }
.hero .note b { width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 5px rgba(61, 107, 90, .18); }
/* نقشه‌ی سیستم: گره‌ها و خط‌هایی که کشیده می‌شوند */
.sysmap { position: relative; aspect-ratio: 1 / 1.04; width: 100%; transform-style: preserve-3d; }
.sysmap svg { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
.sysmap .ring { fill: none; stroke: var(--esp); }
.sysmap .ring.main { stroke-width: 1.6; opacity: .32; stroke-dasharray: 2 9; stroke-linecap: round; animation: orbit 14s linear infinite; }
.sysmap .ring.outer { stroke-width: 1; opacity: .14; }
.sysmap .ring.inner { stroke-width: 1.2; opacity: .2; stroke-dasharray: 14 10; animation: orbit 9s linear infinite reverse; }
@keyframes orbit { to { stroke-dashoffset: -220; } }
.sysmap .spoke { stroke: var(--esp); stroke-width: 1.6; opacity: .28; stroke-dasharray: 1; transition: stroke .5s, opacity .5s, stroke-width .5s; }
.sysmap .spoke.hot { stroke: var(--brick); stroke-width: 2.4; opacity: 1; }
.sysmap .packet { fill: var(--esp); opacity: 0; }
.sysmap .burst { fill: var(--brick); opacity: 0; filter: drop-shadow(0 0 6px rgba(185, 71, 47, .8)); }
.sysmap .sat { fill: var(--brick); }
.sysmap .sat.b { fill: var(--green); opacity: .7; }
.node { position: absolute; transform: translate(-50%, -50%); background: var(--paper); border-radius: 18px; padding: 14px 18px; box-shadow: 0 14px 30px rgba(42, 31, 24, .14), 0 0 0 1px var(--line); font-weight: 800; font-size: clamp(13px, 1.15vw, 16px); white-space: nowrap; display: flex; align-items: center; gap: 10px; z-index: 2; transition: box-shadow .5s var(--ease), color .5s; }
.node i { width: 34px; height: 34px; border-radius: 10px; background: var(--kah); display: grid; place-items: center; font-style: normal; transition: background .5s; }
.node i svg { width: 20px; height: 20px; position: static; stroke: var(--esp); stroke-width: 2; fill: none; transition: stroke .5s; }
.node[data-a] { flex-direction: column; gap: 7px; padding: 12px 16px 11px; font-size: clamp(12.5px, 1vw, 14.5px); border-radius: 16px; line-height: 1.5; }
.node.on { box-shadow: 0 18px 38px rgba(185, 71, 47, .28), 0 0 0 2px var(--brick); }
.node.on i { background: var(--brick); }
.node.on i svg { stroke: var(--paper); }
.node.core { background: radial-gradient(circle at 50% 30%, #4A3A2E, var(--esp) 70%); color: var(--paper); width: clamp(112px, 31%, 172px); aspect-ratio: 1; padding: 0; flex-direction: column; justify-content: center; gap: 8px; font-size: clamp(14px, 1.3vw, 18px); border-radius: 50%; z-index: 3; box-shadow: 0 22px 50px rgba(42, 31, 24, .35), 0 0 0 6px rgba(42, 31, 24, .08); }
.node.core i { width: 44px; height: 44px; border-radius: 50%; }
.node.core i svg { width: 24px; height: 24px; }
.node.core i { background: var(--brick); }
.node.core i svg { stroke: var(--paper); }
/* موجِ دورِ هسته */
.node.core::before, .node.core::after { content: ''; position: absolute; inset: 0; border-radius: inherit; box-shadow: 0 0 0 2px var(--brick); opacity: 0; animation: pulse 3.4s var(--ease) infinite; pointer-events: none; }
.node.core::after { animation-delay: 1.7s; }
@keyframes pulse { 0% { transform: scale(1); opacity: .7; } 100% { transform: scale(1.7); opacity: 0; } }
.sysmap.still .node.core::before, .sysmap.still .node.core::after, .sysmap.still .ring { animation: none; }
.sysmap .simo { position: absolute; width: 21%; left: 0; bottom: -8%; z-index: 4; filter: drop-shadow(0 14px 18px rgba(42, 31, 24, .25)); }

/* ── نوارِ متحرک ── */
.marquee { border-block: 1px solid var(--line); overflow: hidden; padding-block: 22px; background: var(--paper); }
.marquee .track { display: flex; gap: 56px; width: max-content; animation: slide 38s linear infinite; font-weight: 800; font-size: clamp(18px, 2vw, 24px); color: var(--esp-2); }
.marquee .track span { display: inline-flex; align-items: center; gap: 56px; }
.marquee .track span::after { content: ''; width: 10px; height: 10px; background: var(--brick); transform: rotate(45deg); border-radius: 2px; }
@keyframes slide { to { transform: translateX(50%); } }

/* ── دردها ── */
.pains { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.pain { background: var(--paper); border-radius: var(--radius); padding: 30px; box-shadow: 0 0 0 1px var(--line); }
.pain .q { font-size: 44px; line-height: 1; color: var(--brick); font-weight: 900; }
.pain p { margin-top: 10px; font-weight: 700; font-size: clamp(17px, 1.4vw, 19.5px); line-height: 1.7; }
.pain small { display: block; margin-top: 14px; color: var(--esp-2); font-size: 15px; font-weight: 500; }

/* ── خدمات ── */
.services { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.svc { position: relative; background: var(--paper); border-radius: var(--radius); padding: 34px 32px 30px; box-shadow: 0 0 0 1px var(--line); transition: transform .45s var(--ease), box-shadow .45s var(--ease), background .45s; overflow: hidden; display: flex; flex-direction: column; }
.svc:hover { transform: translateY(-6px); box-shadow: 0 24px 50px rgba(42, 31, 24, .13), 0 0 0 1px var(--line); }
.svc .ic { width: 58px; height: 58px; border-radius: 16px; background: var(--kah); display: grid; place-items: center; margin-bottom: 26px; transition: background .4s; }
.svc .ic svg { width: 28px; height: 28px; stroke: var(--esp); stroke-width: 1.8; fill: none; transition: stroke .4s; }
.svc:hover .ic { background: var(--brick); }
.svc:hover .ic svg { stroke: var(--paper); }
.svc h3 { margin-bottom: 12px; }
.svc p { color: var(--esp-2); font-size: 16.5px; }
.svc ul { list-style: none; margin-top: 20px; display: flex; flex-wrap: wrap; gap: 8px; }
.svc li { font-size: 13.5px; font-weight: 700; padding: 6px 13px; border-radius: 999px; background: rgba(42, 31, 24, .06); }
.svc .n { position: absolute; top: 26px; left: 30px; font-weight: 900; font-size: 15px; color: rgba(42, 31, 24, .25); direction: ltr; }
.svc.dark { background: var(--esp); color: var(--paper); }
.svc.dark p, .svc.dark .n { color: rgba(247, 241, 230, .7); }
.svc.dark .ic { background: rgba(247, 241, 230, .1); }
.svc.dark .ic svg { stroke: var(--paper); }
.svc.dark li { background: rgba(247, 241, 230, .1); }

/* ── روشِ کار ── */
.process { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; counter-reset: st; position: relative; }
.step { padding: 0 6px 0 28px; position: relative; }
.step .dot { width: 54px; height: 54px; border-radius: 50%; background: var(--paper); box-shadow: 0 0 0 1.5px var(--esp); display: grid; place-items: center; font-weight: 900; font-size: 20px; position: relative; z-index: 2; margin-bottom: 26px; transition: background .4s, color .4s; }
.step.on .dot { background: var(--esp); color: var(--paper); }
.process .rail { position: absolute; top: 27px; right: 27px; left: 0; height: 1.5px; background: var(--line); }
.process .rail b { position: absolute; inset: 0; background: var(--brick); transform-origin: right; transform: scaleX(0); }
.step h3 { margin-bottom: 10px; }
.step p { color: var(--esp-2); font-size: 16px; }
.step .t { display: inline-block; margin-top: 14px; font-size: 13.5px; font-weight: 800; color: var(--green); }

/* ── اصول ── */
.principles { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border-radius: var(--radius); overflow: hidden; box-shadow: 0 0 0 1px var(--line); background: var(--paper); }
.pr { padding: clamp(28px, 4vw, 44px); border-bottom: 1px solid var(--line); }
.pr:nth-child(odd) { border-left: 1px solid var(--line); }
.pr:nth-last-child(-n+2) { border-bottom: 0; }
.pr h3 { display: flex; align-items: center; gap: 14px; margin-bottom: 10px; }
.pr h3 b { width: 10px; height: 10px; background: var(--brick); transform: rotate(45deg); border-radius: 2px; flex: none; }
.pr p { color: var(--esp-2); }

/* ── بندِ دعوت ── */
.band { background: var(--esp); color: var(--paper); border-radius: clamp(26px, 4vw, 44px); padding: clamp(44px, 7vw, 90px); display: grid; grid-template-columns: 1.3fr .7fr; gap: 30px; align-items: center; position: relative; overflow: hidden; }
.band h2 { color: var(--paper); }
.band p { color: rgba(247, 241, 230, .75); margin-top: 16px; max-width: 560px; }
.band .btn-primary { background: var(--brick); }
.band .btn-primary:hover { background: var(--paper); color: var(--esp); }
.band .simo { position: absolute; left: clamp(28px, 4%, 60px); bottom: 0; height: 88%; width: auto; max-width: none; filter: drop-shadow(0 12px 18px rgba(0, 0, 0, .3)); }
@media (min-width: 961px) { .band { padding-left: clamp(220px, 22vw, 320px); } }
.band .acts { display: flex; flex-direction: column; gap: 12px; align-items: flex-start; position: relative; z-index: 2; }

/* ── پرسش‌ها ── */
.faq { max-width: 860px; }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { list-style: none; cursor: pointer; padding: 26px 0; font-weight: 800; font-size: clamp(17px, 1.5vw, 20px); display: flex; justify-content: space-between; gap: 20px; align-items: center; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; font-size: 30px; font-weight: 300; line-height: 1; transition: transform .3s var(--ease); color: var(--brick); }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { padding-bottom: 26px; color: var(--esp-2); max-width: 720px; }

/* ── تماس ── */
.contact { display: grid; grid-template-columns: .85fr 1.15fr; gap: clamp(30px, 5vw, 70px); align-items: start; }
.contact .ways { display: grid; gap: 12px; margin-top: 34px; }
.way { display: flex; align-items: center; gap: 16px; padding: 18px 22px; border-radius: 18px; background: var(--paper); box-shadow: 0 0 0 1px var(--line); font-weight: 800; transition: transform .3s var(--ease), box-shadow .3s; }
.way:hover { transform: translateX(-4px); box-shadow: 0 0 0 1.5px var(--esp); }
.way i { width: 44px; height: 44px; border-radius: 12px; background: var(--kah); display: grid; place-items: center; flex: none; }
.way i svg { width: 22px; height: 22px; stroke: var(--esp); stroke-width: 1.9; fill: none; }
.way small { display: block; font-weight: 500; color: var(--esp-2); font-size: 14px; }
.form { background: var(--paper); border-radius: clamp(24px, 3vw, 34px); padding: clamp(26px, 4vw, 48px); box-shadow: 0 30px 60px rgba(42, 31, 24, .1), 0 0 0 1px var(--line); }
.form h3 { margin-bottom: 6px; }
.form .hint { color: var(--esp-2); font-size: 15px; margin-bottom: 28px; }
.fields { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { display: grid; gap: 8px; }
.field.full { grid-column: 1 / -1; }
.field label, .field legend { font-weight: 800; font-size: 14.5px; }
.field input, .field select, .field textarea { width: 100%; border: 1.5px solid rgba(42, 31, 24, .18); background: #fffdf8; border-radius: 14px; padding: 14px 16px; font-size: 16px; transition: border-color .2s, box-shadow .2s; }
.field textarea { min-height: 120px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--esp); box-shadow: 0 0 0 4px rgba(42, 31, 24, .08); }
.field input[dir=ltr] { text-align: right; }
fieldset.field { border: 0; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips label { cursor: pointer; position: relative; }
.chips input { position: absolute; inset: 0; width: 1px; height: 1px; padding: 0; margin: 0; border: 0; opacity: 0; }
.chips span { display: inline-block; padding: 9px 16px; border-radius: 999px; box-shadow: inset 0 0 0 1.5px rgba(42, 31, 24, .2); font-weight: 700; font-size: 14.5px; transition: background .2s, color .2s, box-shadow .2s; }
.chips input:checked + span { background: var(--esp); color: var(--paper); box-shadow: none; }
.chips input:focus-visible + span { outline: 3px solid var(--brick); outline-offset: 2px; }
.form .send { margin-top: 26px; display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.form .msg { font-weight: 700; font-size: 15px; }
.form .msg.ok { color: var(--green); } .form .msg.err { color: var(--brick); }
.hp { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); opacity: 0; pointer-events: none; }

/* ── صفحه‌ی خدمات ── */
.page-head { padding-block: clamp(40px, 7vw, 90px) clamp(30px, 4vw, 50px); }
.page-head h1 { font-size: clamp(38px, 6vw, 76px); letter-spacing: -1.5px; }
.svc-detail { display: grid; grid-template-columns: .8fr 1.2fr; gap: clamp(26px, 5vw, 70px); padding-block: clamp(50px, 7vw, 90px); border-top: 1px solid var(--line); }
.svc-detail .side { position: sticky; top: 110px; align-self: start; }
.svc-detail .side .n { font-weight: 900; color: var(--brick); direction: ltr; display: block; margin-bottom: 10px; }
.svc-detail h2 { font-size: clamp(28px, 3.4vw, 44px); }
.svc-detail .body > p { font-size: clamp(17px, 1.4vw, 19.5px); color: var(--esp-2); }
.deliv { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 30px; }
.deliv div { background: var(--paper); border-radius: 16px; padding: 18px 20px; box-shadow: 0 0 0 1px var(--line); font-weight: 700; display: flex; gap: 12px; align-items: flex-start; font-size: 16px; line-height: 1.7; }
.deliv div::before { content: ''; flex: none; width: 9px; height: 9px; margin-top: 10px; background: var(--brick); transform: rotate(45deg); border-radius: 2px; }
.forwho { margin-top: 26px; padding: 20px 24px; border-radius: 16px; background: rgba(61, 107, 90, .1); color: var(--green); font-weight: 700; font-size: 16px; }

/* ── درباره ── */
.soon { background: var(--paper); border-radius: var(--radius); padding: clamp(30px, 5vw, 60px); box-shadow: 0 0 0 1px var(--line); text-align: center; }

/* ── پانویس ── */
footer { padding-block: 70px 40px; margin-top: clamp(60px, 9vw, 120px); border-top: 1px solid var(--line); }
footer .wrap { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; }
footer h4 { font-size: 15px; margin-bottom: 14px; color: var(--esp-2); }
footer ul { list-style: none; display: grid; gap: 8px; font-weight: 600; }
footer a:hover { color: var(--brick); }
footer .bottom { grid-column: 1 / -1; display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; padding-top: 30px; margin-top: 10px; border-top: 1px solid var(--line); font-size: 14px; color: var(--esp-2); }

/* ── نمایانی با اسکرول ── */
.rv { opacity: 0; transform: translateY(26px); transition: opacity .9s var(--ease), transform .9s var(--ease); }
.rv.in { opacity: 1; transform: none; }
.rv.d1 { transition-delay: .08s; } .rv.d2 { transition-delay: .16s; } .rv.d3 { transition-delay: .24s; } .rv.d4 { transition-delay: .32s; } .rv.d5 { transition-delay: .4s; }
@media (prefers-reduced-motion: reduce) { .rv { opacity: 1; transform: none; transition: none; } .marquee .track { animation: none; } html { scroll-behavior: auto; } }

/* ── موبایل ── */
@media (max-width: 1100px) {
  .hero .wrap { grid-template-columns: 1fr; }
  .sysmap { max-width: 560px; margin-inline: auto; }
}
@media (max-width: 960px) {
  .nav { position: fixed; inset: 84px 0 auto 0; flex-direction: column; background: var(--kah); padding: 18px var(--pad) 28px; gap: 4px; box-shadow: 0 20px 40px rgba(42, 31, 24, .12); transform: translateY(calc(-100% - 120px)); visibility: hidden; transition: transform .4s var(--ease), visibility 0s .4s; }
  .nav.open { transform: none; visibility: visible; transition: transform .4s var(--ease); }
  .nav a { font-size: 18px; padding: 12px 14px; }
  .menu-btn { display: block; }
  .top .cta-top { display: none; }
  .hero .wrap, .sec-head, .contact, .band, .svc-detail { grid-template-columns: 1fr; }
  .sec-head .lead { justify-self: start; }
  .sysmap { max-width: 520px; margin-inline: auto; }
  .pains, .services { grid-template-columns: 1fr 1fr; }
  .process { grid-template-columns: 1fr 1fr; row-gap: 44px; }
  .process .rail { display: none; }
  .principles { grid-template-columns: 1fr; }
  .pr:nth-child(odd) { border-left: 0; }
  .pr:nth-last-child(2) { border-bottom: 1px solid var(--line); }
  .band .simo { display: none; }
  .svc-detail .side { position: static; }
  footer .wrap { grid-template-columns: 1fr 1fr; }
  footer .about { grid-column: 1 / -1; }
}
@media (max-width: 620px) {
  .node { padding: 9px 11px; gap: 7px; font-size: 12px; border-radius: 13px; }
  .node i { width: 26px; height: 26px; border-radius: 8px; }
  .node i svg { width: 16px; height: 16px; }
  .node.core { font-size: 13.5px; gap: 5px; }
  .node.core i { width: 32px; height: 32px; }
  .node.core i svg { width: 18px; height: 18px; }
  .node[data-a] { padding: 9px 10px 8px; gap: 5px; font-size: 11.5px; }
  .pains, .services, .process, .fields, .deliv { grid-template-columns: 1fr; }
  .hero h1 { letter-spacing: -1px; }
  .btn { padding: 15px 24px; }
  .hero .cta .btn { flex: 1; }
}