/* Mega-Pak — Performance Packaging */
:root {
  --ink: #0e1621;
  --ink-2: #17212e;
  --ink-3: #233142;
  --blue: #004990;
  --blue-d: #003366;
  --blue-l: #e5eef8;
  --kraft: #c69c6d;
  --kraft-l: #f3ebe0;
  --paper: #f7f5f1;
  --line: #e5e0d8;
  --muted: #5b646a;
  --hazard: #f08c00;
  --white: #fff;
  --wrap: 1340px;
  --gutter: 32px;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(14,22,33,.06), 0 12px 32px -12px rgba(14,22,33,.18);
  --head: "Archivo", system-ui, sans-serif;
  --body: "Inter", system-ui, sans-serif;
}
*,*::before,*::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; font-family: var(--body); font-size: 17px; line-height: 1.65; color: var(--ink); background: var(--white); -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { color: inherit; }
h1,h2,h3,h4 { font-family: var(--head); line-height: 1.08; letter-spacing: -.02em; margin: 0 0 .5em; font-weight: 800; }
h1 { font-size: clamp(2.6rem, 5.4vw, 4.6rem); }
h2 { font-size: clamp(2rem, 3.4vw, 3rem); }
h3 { font-size: 1.35rem; letter-spacing: -.01em; font-weight: 700; }
p { margin: 0 0 1em; }
.wrap { width: 100%; max-width: calc(var(--wrap) + var(--gutter) * 2); margin: 0 auto; padding: 0 var(--gutter); }
.eyebrow { display: inline-flex; align-items: center; gap: 10px; font: 700 .78rem/1 var(--body); letter-spacing: .14em; text-transform: uppercase; color: var(--blue-d); margin-bottom: 18px; }
.eyebrow::before { content: ""; width: 28px; height: 2px; background: currentColor; }
.on-dark .eyebrow { color: #7fbfff; }
.lead { font-size: 1.2rem; color: var(--muted); max-width: 62ch; }
.on-dark .lead { color: #c4ccd0; }
.muted { color: var(--muted); }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: 10px; padding: 15px 26px; border-radius: 999px; font: 600 1rem/1 var(--body); text-decoration: none; border: 2px solid transparent; transition: .2s ease; cursor: pointer; }
.btn svg { width: 18px; height: 18px; transition: transform .2s; }
.btn:hover svg { transform: translateX(3px); }
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--blue-d); }
.btn-ghost { border-color: rgba(255,255,255,.35); color: #fff; }
.btn-ghost:hover { border-color: #fff; background: rgba(255,255,255,.08); }
.btn-dark { background: var(--ink); color: #fff; }
.btn-dark:hover { background: var(--ink-3); }
.btn-line { border-color: var(--ink); color: var(--ink); }
.btn-line:hover { background: var(--ink); color: #fff; }
.link-arrow { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; text-decoration: none; color: var(--blue-d); }
.link-arrow svg { width: 16px; height: 16px; transition: transform .2s; }
.link-arrow:hover svg { transform: translateX(4px); }

/* Top bar */
.topbar { background: var(--ink); color: #b9c2c7; font-size: .85rem; }
.topbar .wrap { display: flex; justify-content: space-between; align-items: center; gap: 24px; min-height: 42px; }
.topbar a { text-decoration: none; color: #e8ecee; }
.topbar a:hover { color: #7fbfff; }
.topbar .contacts { display: flex; gap: 26px; flex-wrap: wrap; }
.topbar .flag { display: inline-flex; align-items: center; gap: 8px; }
.topbar .flag b { font-weight: 600; color: #8a959b; font-size: .75rem; letter-spacing: .08em; }
.topbar .iso { display: inline-flex; align-items: center; gap: 8px; }
.topbar .iso::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: #7fbfff; box-shadow: 0 0 0 3px rgba(127,191,255,.25); }

/* Header */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.96); backdrop-filter: saturate(1.4) blur(10px); border-bottom: 1px solid var(--line); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 32px; height: 84px; }
.logo img { height: 46px; width: auto; }
.nav { display: flex; align-items: center; gap: 4px; }
.nav > .item { position: relative; }
.nav > .item > a { display: flex; align-items: center; gap: 6px; padding: 12px 16px; font-weight: 600; font-size: .98rem; text-decoration: none; border-radius: 10px; }
.nav > .item > a:hover, .nav > .item > a.active { color: var(--blue-d); }
.nav > .item > a.active { background: var(--blue-l); }
.nav .caret { width: 12px; height: 12px; opacity: .6; }
.dropdown { position: absolute; top: calc(100% + 8px); left: 0; min-width: 270px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 10px; opacity: 0; visibility: hidden; transform: translateY(6px); transition: .18s ease; }
.nav > .item:hover .dropdown, .nav > .item:focus-within .dropdown { opacity: 1; visibility: visible; transform: none; }
.dropdown a { display: block; padding: 10px 14px; border-radius: 8px; text-decoration: none; font-size: .95rem; }
.dropdown a:hover { background: var(--paper); color: var(--blue-d); }
.header-cta { display: flex; align-items: center; gap: 18px; }
.header-cta .phone { font-weight: 700; text-decoration: none; white-space: nowrap; }
.header-cta .phone small { display: block; font: 600 .7rem/1.2 var(--body); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.menu-toggle { display: none; background: none; border: 0; padding: 8px; cursor: pointer; }
.menu-toggle svg { width: 28px; height: 28px; }

/* Hero */
.hero { position: relative; color: #fff; background: var(--ink); overflow: hidden; }
.hero-bg { position: absolute; inset: 0; background-size: cover; background-position: center; }
.hero-bg::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(14,22,33,.95) 0%, rgba(14,22,33,.82) 45%, rgba(14,22,33,.35) 100%); }
.hero .wrap { position: relative; display: grid; grid-template-columns: minmax(0,1.35fr) minmax(0,1fr); gap: 64px; align-items: end; padding-top: 120px; padding-bottom: 96px; }
.hero h1 { max-width: 15ch; }
.hero h1 em { font-style: normal; color: #7fbfff; }
.hero .lead { margin-bottom: 36px; }
.hero .actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-card { background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.14); backdrop-filter: blur(14px); border-radius: 18px; padding: 30px; }
.hero-card h3 { font-size: 1.1rem; margin-bottom: 18px; }
.hero-card ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.hero-card li { display: flex; gap: 14px; align-items: flex-start; color: #d5dcdf; font-size: .98rem; line-height: 1.5; }
.hero-card li b { color: #fff; display: block; }
.tick { flex: none; width: 24px; height: 24px; border-radius: 50%; background: var(--blue); display: grid; place-items: center; margin-top: 2px; }
.tick svg { width: 13px; height: 13px; color: #fff; }
.page-hero .wrap { grid-template-columns: 1fr; padding-top: 96px; padding-bottom: 80px; }
.page-hero h1 { max-width: 18ch; }
.crumbs { font-size: .88rem; color: #a6b0b5; margin-bottom: 22px; }
.crumbs a { color: #d5dcdf; text-decoration: none; }
.crumbs a:hover { color: #7fbfff; }

/* Stats strip */
.stats { background: var(--blue); color: #fff; }
.stats .wrap { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat { padding: 34px 28px; border-left: 1px solid rgba(255,255,255,.22); }
.stat:first-child { border-left: 0; padding-left: 0; }
.stat strong { display: block; font: 800 2.3rem/1 var(--head); letter-spacing: -.02em; margin-bottom: 8px; }
.stat span { font-size: .95rem; color: #d6e4f3; }

/* Sections */
.section { padding: 112px 0; }
.section-sm { padding: 80px 0; }
.bg-paper { background: var(--paper); }
.bg-kraft { background: var(--kraft-l); }
.bg-ink { background: var(--ink); color: #fff; }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 48px; margin-bottom: 56px; }
.section-head h2 { max-width: 18ch; margin: 0; }
.section-head p { max-width: 52ch; margin: 0; color: var(--muted); }
.on-dark .section-head p { color: #b9c2c7; }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.split.wide-left { grid-template-columns: 1.15fr 1fr; }
.split-media { position: relative; }
.split-media img { width: 100%; aspect-ratio: 5/4; object-fit: cover; border-radius: 18px; }
.split-media .badge { position: absolute; left: -28px; bottom: 36px; background: #fff; border-radius: 16px; box-shadow: var(--shadow); padding: 20px 24px; display: flex; align-items: center; gap: 16px; max-width: 290px; }
.split-media .badge strong { font: 800 2.4rem/1 var(--head); color: var(--blue-d); }
.split-media .badge span { font-size: .9rem; line-height: 1.35; color: var(--muted); }
.media-stack { display: grid; grid-template-columns: 1.3fr 1fr; gap: 16px; }
.media-stack img { width: 100%; height: 100%; object-fit: cover; border-radius: 16px; }
.media-stack img:first-child { grid-row: span 2; aspect-ratio: 3/4; }
.media-stack img:not(:first-child) { aspect-ratio: 1/1; }

.checklist { list-style: none; padding: 0; margin: 28px 0; display: grid; gap: 14px; }
.checklist li { display: flex; gap: 14px; align-items: flex-start; }

/* Pillars (three core services) */
.pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.pillar { position: relative; display: flex; flex-direction: column; min-height: 520px; border-radius: 20px; overflow: hidden; color: #fff; text-decoration: none; isolation: isolate; }
.pillar img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: -2; transition: transform .6s ease; }
.pillar::before { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(180deg, rgba(14,22,33,.05) 20%, rgba(14,22,33,.92) 78%); }
.pillar:hover img { transform: scale(1.05); }
.pillar .body { margin-top: auto; padding: 34px; }
.pillar .num { font: 700 .8rem/1 var(--body); letter-spacing: .14em; color: #7fbfff; margin-bottom: 14px; display: block; }
.pillar h3 { font-size: 1.9rem; margin-bottom: 12px; }
.pillar p { color: #d5dcdf; margin-bottom: 22px; }
.pillar .link-arrow { color: #fff; }
.pillar.hazard .num { color: #ffb347; }

/* Cards */
.cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.cards.three { grid-template-columns: repeat(3, 1fr); }
.cards.two { grid-template-columns: repeat(2, 1fr); }
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 32px; transition: .25s ease; }
.card:hover { border-color: transparent; box-shadow: var(--shadow); transform: translateY(-3px); }
.card .icon { width: 54px; height: 54px; border-radius: 14px; background: var(--blue-l); color: var(--blue-d); display: grid; place-items: center; margin-bottom: 24px; }
.card .icon svg { width: 26px; height: 26px; }
.card h3 { margin-bottom: 10px; }
.card p { color: var(--muted); font-size: .98rem; margin: 0; }
.bg-ink .card { background: var(--ink-2); border-color: rgba(255,255,255,.08); }
.bg-ink .card p { color: #b9c2c7; }
.bg-ink .card .icon { background: rgba(64,140,220,.22); color: #7fbfff; }

.product-card { display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; text-decoration: none; transition: .25s ease; }
.product-card:hover { box-shadow: var(--shadow); transform: translateY(-3px); border-color: transparent; }
.product-card .ph { aspect-ratio: 4/3; overflow: hidden; background: var(--paper); }
.product-card .ph img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.product-card:hover .ph img { transform: scale(1.05); }
.product-card .body { padding: 26px 26px 28px; display: flex; flex-direction: column; flex: 1; }
.product-card h3 { margin-bottom: 8px; }
.product-card p { color: var(--muted); font-size: .96rem; flex: 1; }
.product-card .tags { display: flex; flex-wrap: wrap; gap: 6px; margin: 4px 0 18px; }
.tag { font-size: .78rem; font-weight: 600; padding: 5px 10px; border-radius: 999px; background: var(--paper); color: var(--ink-3); }

/* Steps */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; counter-reset: s; border-top: 1px solid var(--line); }
.step { padding: 34px 28px 0 0; counter-increment: s; }
.step::before { content: "0" counter(s); display: block; font: 800 .9rem/1 var(--head); color: var(--blue-d); margin-bottom: 18px; letter-spacing: .08em; }
.step h3 { font-size: 1.2rem; }
.step p { color: var(--muted); font-size: .96rem; margin: 0; }
.bg-ink .steps { border-color: rgba(255,255,255,.14); }
.bg-ink .step::before { color: #7fbfff; }
.bg-ink .step p { color: #b9c2c7; }

/* Feature band */
.feature { display: grid; grid-template-columns: 1fr 1fr; border-radius: 22px; overflow: hidden; background: var(--ink); color: #fff; }
.feature .media { min-height: 520px; background-size: cover; background-position: center; }
.feature .body { padding: 72px 64px; }
.feature .body p { color: #c4ccd0; }
.hazard-stripe { height: 10px; background: repeating-linear-gradient(-45deg, var(--hazard) 0 14px, var(--ink) 14px 28px); }

/* Quote/ISO band */
.trust { display: grid; grid-template-columns: auto 1fr auto; gap: 48px; align-items: center; background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 36px 44px; }
.trust img { height: 84px; width: auto; }
.trust h3 { margin-bottom: 6px; }
.trust p { margin: 0; color: var(--muted); }

/* CTA */
.cta-band { position: relative; overflow: hidden; background: var(--blue); color: #fff; border-radius: 24px; padding: 72px; display: grid; grid-template-columns: 1.4fr 1fr; gap: 48px; align-items: center; }
.cta-band::after { content: ""; position: absolute; right: -80px; top: -80px; width: 360px; height: 360px; border: 60px solid rgba(255,255,255,.08); border-radius: 50%; }
.cta-band h2 { margin-bottom: 14px; }
.cta-band p { color: #d6e4f3; margin: 0; font-size: 1.1rem; }
.cta-band .actions { display: flex; flex-direction: column; gap: 14px; align-items: flex-start; position: relative; z-index: 1; }
.cta-band .btn-dark { background: var(--ink); }
.cta-band .tel { font: 800 1.7rem/1.1 var(--head); color: #fff; text-decoration: none; }
.cta-band .tel small { display: block; font: 600 .78rem/1.4 var(--body); letter-spacing: .12em; text-transform: uppercase; color: #c2d6ec; }

/* Table */
.spec { width: 100%; border-collapse: collapse; font-size: .95rem; background: #fff; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); }
.spec th, .spec td { text-align: left; padding: 14px 18px; border-bottom: 1px solid var(--line); }
.spec th { background: var(--paper); font-weight: 700; font-size: .82rem; letter-spacing: .06em; text-transform: uppercase; color: var(--ink-3); }
.spec tr:last-child td { border-bottom: 0; }
.spec code { font: 600 .9rem/1 ui-monospace, monospace; color: var(--blue-d); }

/* Gallery */
.gallery { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.gallery img { width: 100%; aspect-ratio: 1/1; object-fit: cover; border-radius: 14px; }
.gallery img.tall { grid-row: span 2; aspect-ratio: auto; height: 100%; }

/* Contact */
.contact-grid { display: grid; grid-template-columns: 1fr 1.25fr; gap: 64px; align-items: start; }
.office { background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 32px; margin-bottom: 20px; }
.office h3 { display: flex; align-items: center; gap: 10px; }
.office dl { display: grid; grid-template-columns: 110px 1fr; gap: 10px 16px; margin: 18px 0 0; font-size: .98rem; }
.office dt { color: var(--muted); font-weight: 600; font-size: .82rem; letter-spacing: .06em; text-transform: uppercase; padding-top: 3px; }
.office dd { margin: 0; }
.office a { text-decoration: none; font-weight: 600; }
.office a:hover { color: var(--blue-d); }
.form { background: #fff; border-radius: 20px; padding: 44px; box-shadow: var(--shadow); border: 1px solid var(--line); }
.form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { display: flex; flex-direction: column; gap: 8px; margin-bottom: 18px; }
.field label { font-weight: 600; font-size: .9rem; }
.field input, .field textarea, .field select { font: inherit; font-size: 1rem; padding: 14px 16px; border: 1.5px solid var(--line); border-radius: 10px; background: var(--paper); color: var(--ink); transition: .15s; }
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-color: var(--blue); background: #fff; box-shadow: 0 0 0 4px rgba(0,73,144,.15); }
.field textarea { min-height: 150px; resize: vertical; }
.map { border: 0; width: 100%; height: 420px; border-radius: 20px; display: block; filter: grayscale(.2); }

/* Footer */
.site-footer { background: var(--ink); color: #b9c2c7; padding: 88px 0 0; font-size: .96rem; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 56px; }
.footer-logo { display: inline-block; background: #fff; padding: 12px 16px; border-radius: 12px; margin-bottom: 22px; }
.footer-logo img { height: 36px; width: auto; }
.site-footer h4 { color: #fff; font: 700 .8rem/1 var(--body); letter-spacing: .14em; text-transform: uppercase; margin-bottom: 22px; }
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 11px; }
.site-footer a { text-decoration: none; color: #d5dcdf; }
.site-footer a:hover { color: #7fbfff; }
.socials { display: flex; gap: 10px; margin-top: 24px; }
.socials a { width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center; border: 1px solid rgba(255,255,255,.16); }
.socials a:hover { background: var(--blue); border-color: var(--blue); color: #fff; }
.socials svg { width: 17px; height: 17px; }
.footer-bottom { margin-top: 72px; border-top: 1px solid rgba(255,255,255,.1); padding: 26px 0; display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; font-size: .88rem; color: #8a959b; }
.footer-bottom nav { display: flex; gap: 22px; }

/* Reveal on scroll */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } html { scroll-behavior: auto; } }

/* Responsive */
@media (max-width: 1180px) {
  .header-cta .phone { display: none; }
  .nav > .item > a { padding: 12px 11px; }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 980px) {
  :root { --gutter: 22px; }
  .topbar .hide-sm { display: none; }
  .menu-toggle { display: block; }
  .nav { position: fixed; top: 84px; left: 0; right: 0; height: calc(100vh - 84px); background: #fff; flex-direction: column; align-items: stretch; padding: 16px 22px 40px; gap: 0; overflow-y: auto; opacity: 0; visibility: hidden; transform: translateY(-10px); transition: opacity .25s ease, transform .25s ease, visibility .25s; }
  .nav.open { opacity: 1; visibility: visible; transform: none; }
  .nav > .item > a { padding: 16px 4px; border-bottom: 1px solid var(--line); border-radius: 0; font-size: 1.1rem; }
  .nav > .item > a.active { background: none; }
  .dropdown { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: 0; padding: 4px 0 10px 12px; min-width: 0; }
  .header-cta .btn { display: none; }
  .hero .wrap, .split, .split.wide-left, .feature, .cta-band, .contact-grid, .trust { grid-template-columns: 1fr; }
  .hero .wrap { padding-top: 80px; padding-bottom: 64px; gap: 40px; }
  .pillars, .cards.three { grid-template-columns: 1fr; }
  .pillar { min-height: 420px; }
  .stats .wrap { grid-template-columns: repeat(2, 1fr); }
  .stat { padding: 26px 18px; border-left: 0; border-top: 1px solid rgba(255,255,255,.22); }
  .stat:first-child { padding-left: 18px; }
  .section { padding: 80px 0; }
  .section-head { flex-direction: column; align-items: start; gap: 18px; }
  .split { gap: 48px; }
  .split-media .badge { left: 16px; bottom: 16px; }
  .steps { grid-template-columns: 1fr 1fr; gap: 0 24px; }
  .feature .media { min-height: 300px; }
  .feature .body, .cta-band { padding: 44px 30px; }
  .gallery { grid-template-columns: repeat(2, 1fr); }
  .trust { gap: 20px; padding: 30px; }
}
@media (max-width: 640px) {
  body { font-size: 16px; }
  .topbar .wrap { justify-content: center; }
  .topbar .iso { display: none; }
  .cards, .cards.two, .steps, .footer-grid, .form .row { grid-template-columns: 1fr; }
  .form { padding: 28px 22px; }
  .office dl { grid-template-columns: 1fr; gap: 2px; }
  .office dd { margin-bottom: 10px; }
  .media-stack { grid-template-columns: 1fr 1fr; }
  .spec { font-size: .85rem; }
  .spec th, .spec td { padding: 10px 12px; }
  .table-scroll { overflow-x: auto; }
}

/* Extras */
.tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 18px; }
.split-media .badge svg { width: 40px; height: 40px; }
.qgrid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 32px; counter-reset: s; }
.qgrid .step { border-top: 1px solid var(--line); padding-bottom: 32px; }
.card-dark { background: var(--ink); color: #fff; border-color: var(--ink); text-decoration: none; }
.card-dark p { color: #b9c2c7; }
.card-dark .icon { background: rgba(64,140,220,.22); color: #7fbfff; }
.card-dark .link-arrow { color: #7fbfff; margin-top: 18px; }
.gallery.work img { aspect-ratio: 16/9; }
@media (max-width: 640px) { .qgrid { grid-template-columns: 1fr; } }
.tick svg { stroke-width: 3; }
.contact-grid > *, .split > *, .form .row > * { min-width: 0; }
.field input, .field textarea, .field select { width: 100%; min-width: 0; }

/* Product sub-pages */
.psec { padding: 96px 0; scroll-margin-top: 90px; }
.psec-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 72px; align-items: start; }
.psec-grid.no-media { grid-template-columns: minmax(0, 860px); }
.psec-media { position: sticky; top: 110px; }
.psec-media .main { width: 100%; aspect-ratio: 4/3; object-fit: contain; background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 12px; }
.bg-paper .psec-media .main { border-color: transparent; }
.thumbs { display: flex; gap: 10px; margin-top: 12px; flex-wrap: wrap; }
.thumbs button { padding: 0; border: 2px solid var(--line); border-radius: 10px; background: #fff; cursor: pointer; overflow: hidden; width: 78px; height: 64px; transition: border-color .15s; }
.thumbs button:hover, .thumbs button.on { border-color: var(--blue); }
.thumbs img { width: 100%; height: 100%; object-fit: cover; }
.psec-body h2 { font-size: clamp(1.8rem, 2.6vw, 2.4rem); }
.psec-body p { color: var(--ink-3); }
.psec-body .lead { color: var(--muted); font-size: 1.12rem; }
h4.sub { font: 700 .78rem/1 var(--body); letter-spacing: .12em; text-transform: uppercase; color: var(--blue-d); margin: 28px 0 12px; }
.psec-body .tags { margin: 6px 0 20px; }
.psec-body .link-arrow { margin-top: 8px; }
.psec-body .checklist { margin: 18px 0 24px; }
.grade { max-width: 260px; margin: 6px 0 22px; border-radius: 10px; }
.psec-tables { margin-top: 40px; display: grid; gap: 24px; }
.spec caption { caption-side: top; text-align: left; font: 700 1rem/1.3 var(--head); padding: 0 0 12px; }
.code-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 14px; margin-top: 40px; }
.code-grid figure { margin: 0; background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 10px; text-align: center; }
.code-grid img { width: 100%; aspect-ratio: 1; object-fit: contain; }
.code-grid figcaption { font: 600 .85rem/1 ui-monospace, monospace; color: var(--blue-d); padding-top: 8px; }
.jump { background: var(--paper); border-radius: 18px; padding: 32px; position: sticky; top: 110px; }
.jump h3 { font-size: 1rem; text-transform: uppercase; letter-spacing: .12em; font-family: var(--body); color: var(--muted); margin-bottom: 14px; }
.jump ol { list-style: none; margin: 0; padding: 0; columns: 2; column-gap: 24px; counter-reset: j; }
.jump li { break-inside: avoid; counter-increment: j; }
.jump a { display: flex; gap: 10px; padding: 9px 0; border-bottom: 1px solid var(--line); text-decoration: none; font-weight: 600; font-size: .95rem; }
.jump a::before { content: counter(j, decimal-leading-zero); color: var(--blue); font-size: .8rem; padding-top: 2px; }
.jump a:hover { color: var(--blue); }
.sibs { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 14px; }
.sib { display: flex; align-items: center; gap: 14px; background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 16px 18px; text-decoration: none; font-weight: 600; transition: .2s; }
.sib .icon { width: 42px; height: 42px; flex: none; border-radius: 10px; background: var(--blue-l); color: var(--blue); display: grid; place-items: center; }
.sib .icon svg { width: 22px; height: 22px; }
.sib:hover { border-color: var(--blue); color: var(--blue); }
.sib.current { background: var(--blue); color: #fff; border-color: var(--blue); }
.sib.current .icon { background: rgba(255,255,255,.18); color: #fff; }
.prose { max-width: 760px; }
.prose p { color: var(--ink-3); }
@media (max-width: 980px) {
  .psec { padding: 64px 0; }
  .psec-grid { grid-template-columns: 1fr; gap: 32px; }
  .psec-media, .jump { position: static; }
}
@media (max-width: 640px) { .jump ol { columns: 1; } }
.gfig { margin: 0; }
.gfig img { width: 100%; aspect-ratio: 1/1; object-fit: cover; border-radius: 14px; }
.gfig figcaption { font-size: .92rem; color: var(--muted); padding-top: 12px; }
.gfig figcaption b { display: block; color: var(--ink); font-size: 1rem; }
.project { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 64px; align-items: center; padding: 56px 0; border-top: 1px solid var(--line); }
.project:nth-child(even) .project-media { order: 2; }
.project-media { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.project-media img { width: 100%; aspect-ratio: 16/10; object-fit: cover; border-radius: 14px; }
.project-media img:only-child { grid-column: span 2; }
@media (max-width: 980px) { .project { grid-template-columns: 1fr; gap: 28px; } .project:nth-child(even) .project-media { order: 0; } }
.card-link { display: inline-flex; margin-top: 18px; }