/* ECM site styles — built on the Nocturne token layer (nocturne.css).
   Layout, per-screen composition, the SVG diagram, the front-end editor UI. */

html, body { margin: 0; padding: 0; background: var(--color-bg); scroll-behavior: smooth; }
a:hover { color: var(--color-accent-300); }
.container { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 28px; }
.page { min-height: 100vh; color: var(--color-text); font-family: var(--font-body); font-size: 15px; line-height: 1.55; display: flex; flex-direction: column; }
main { flex: 1 0 auto; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ── header ─────────────────────────────────────────── */
.site-header { position: sticky; top: 0; z-index: 30; backdrop-filter: blur(12px); background: color-mix(in srgb, var(--color-bg) 84%, transparent); }
.site-header .nav { padding-left: 0; padding-right: 0; gap: 22px; flex-wrap: wrap; }
.brand { display: flex; align-items: baseline; gap: 10px; text-decoration: none; color: var(--color-text); margin-right: 0; }
.brand .brand-mark { font-size: 19px; letter-spacing: -0.01em; }
.brand .brand-dom { font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase; color: color-mix(in srgb, var(--color-text) 45%, transparent); }
.header-rule { height: 1px; background: linear-gradient(to right, transparent, var(--color-divider) 48px, var(--color-divider) calc(100% - 48px), transparent); }
.lang-toggle { margin-left: auto; display: flex; align-items: center; gap: 2px; padding: 3px; border-radius: var(--radius-sm); background: var(--color-surface); }
.lang-toggle .on { padding: 5px 11px; border-radius: calc(var(--radius-sm) - 2px); font-size: 12px; letter-spacing: 0.06em; background: var(--color-accent-800); color: var(--color-accent-100); }
.lang-toggle .off { padding: 5px 11px; border: 0; border-radius: calc(var(--radius-sm) - 2px); background: transparent; cursor: pointer; font-family: inherit; font-size: 12px; letter-spacing: 0.06em; color: color-mix(in srgb, var(--color-text) 60%, transparent); text-decoration: none; }
.lang-toggle .off:hover { color: var(--color-text); }

/* ── hero (home) ────────────────────────────────────── */
.hero { position: relative; overflow: hidden; }
.hero-glow { position: absolute; inset: -30% -20% auto -20%; height: 620px; background: radial-gradient(60% 55% at 30% 40%, color-mix(in srgb, var(--color-accent) 16%, transparent), transparent 70%); pointer-events: none; }
.hero-inner { position: relative; padding-top: 76px; }
.eyebrow { display: flex; align-items: center; gap: 14px; font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--color-accent); flex-wrap: wrap; }
.eyebrow .rule { width: 26px; height: 1px; background: var(--color-accent); }
.eyebrow .date { color: color-mix(in srgb, var(--color-accent) 50%, var(--color-text)); opacity: .8; }
.hero h1 { margin: 22px 0 0; font-size: clamp(38px, 5.4vw, 66px); line-height: 1.05; letter-spacing: -0.03em; max-width: 20ch; }
.hero .subtitle { margin: 14px 0 0; font-size: clamp(19px, 2vw, 24px); color: var(--color-accent-300); }
.hero .tagline { margin: 20px 0 0; font-size: 19px; max-width: 46ch; color: color-mix(in srgb, var(--color-text) 80%, transparent); }
.hero .cta { display: flex; gap: 10px; margin-top: 34px; flex-wrap: wrap; }

/* ── diagram ────────────────────────────────────────── */
.diagram-wrap { position: relative; padding-top: 40px; --ecm-play: running; }
.diagram-wrap svg { width: 100%; overflow: visible; }
.ecm-dash { animation: ecmDash 3.6s linear infinite; animation-play-state: var(--ecm-play); }
.ecm-spin { animation: ecmSpin 44s linear infinite; animation-play-state: var(--ecm-play); transform-box: view-box; transform-origin: 0 0; }
.ecm-glow-pulse { animation: ecmPulse 6s ease-in-out infinite; animation-play-state: var(--ecm-play); }
.diagram-caption { margin: 12px 0 0; font-size: 12px; color: color-mix(in srgb, var(--color-text) 50%, transparent); max-width: 90ch; }
@keyframes ecmDash { to { stroke-dashoffset: -294; } }
@keyframes ecmSpin { from { transform: translate(420px,160px) rotate(0deg); } to { transform: translate(420px,160px) rotate(360deg); } }
@keyframes ecmPulse { 0%,100% { opacity: .28; } 50% { opacity: .6; } }
@media (prefers-reduced-motion: reduce) { .ecm-dash, .ecm-spin, .ecm-glow-pulse { animation: none; } }

/* ── thesis / cards / band / quote ──────────────────── */
.thesis { padding-top: 8px; }
.thesis .lead { font-size: clamp(20px, 2.1vw, 27px); max-width: 56ch; margin: 24px 0 0; }
.thesis .follow { font-size: 17px; max-width: 62ch; margin: 16px 0 0; opacity: .72; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 18px; margin-top: 40px; }
.cards .card { padding: 22px; }
.cards .card .card-kicker { display: flex; align-items: center; gap: 8px; font-size: 11px; }
.cards .card .card-kicker .ico { margin-left: auto; color: var(--color-accent); }
.cards .card .card-title { font-size: 20px; margin-top: 6px; }
.cards .card .card-body { font-size: 14px; line-height: 1.65; opacity: .82; }
.band { position: relative; margin-top: 56px; }
.band-inner { background: linear-gradient(180deg, var(--color-section), var(--color-section-glow)); }
.band-grid { display: grid; grid-template-columns: auto 1fr; gap: 40px; align-items: center; padding: 56px 0; }
.eq { display: inline-flex; align-items: center; gap: 16px; color: var(--color-text); }
.eq .m { font-size: 46px; font-style: italic; }
.eq .op { font-size: 38px; opacity: .6; }
.eq .frac { display: inline-flex; flex-direction: column; align-items: center; font-size: 40px; font-style: italic; }
.eq .frac .num { padding: 0 8px 4px; }
.eq .frac .den { padding: 4px 8px 0; border-top: 1.5px solid var(--color-accent-300); }
.band-copy { max-width: 52ch; }
.band-copy .kicker { font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--color-accent-200); margin-bottom: 8px; }
.band-copy p { font-size: 17px; margin: 0; }
.pull { padding: 56px 0 8px; }
.pull .qico { color: var(--color-accent); opacity: .7; }
.pull blockquote { margin: 14px 0 0; font-family: var(--font-heading); font-weight: var(--font-heading-weight); font-size: clamp(24px, 3vw, 38px); line-height: 1.18; max-width: 46ch; }
.pull cite { display: block; margin-top: 18px; font-size: 13px; font-style: normal; color: color-mix(in srgb, var(--color-text) 50%, transparent); }

/* ── ECM white paper ────────────────────────────────── */
.paper-head { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 24px; padding-top: 64px; }
.paper-head .kicker { font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--color-accent); }
.paper-head h1 { margin: 18px 0 0; font-size: clamp(30px, 3.8vw, 46px); line-height: 1.08; letter-spacing: -0.03em; max-width: 26ch; }
.paper-head .sub { margin: 14px 0 0; font-size: 18px; color: var(--color-accent-300); }
.paper-head .meta { display: flex; flex-wrap: wrap; gap: 8px 20px; margin-top: 20px; font-size: 13px; color: color-mix(in srgb, var(--color-text) 60%, transparent); }
.paper-head .meta a { text-decoration: none; }
.paper-rule { height: 1px; margin: 40px 0 0; background: linear-gradient(to right, transparent, var(--color-divider) 48px, var(--color-divider) calc(100% - 48px), transparent); }
.paper-grid { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,232px); gap: 64px; align-items: start; padding-top: 40px; }
.toc { position: sticky; top: 104px; padding-left: 22px; border-left: 1px solid var(--color-divider); display: flex; flex-direction: column; }
.toc .cap { font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: color-mix(in srgb, var(--color-text) 55%, transparent); margin-bottom: 10px; }
.toc a { font-size: 13px; line-height: 1.45; padding: 5px 0; text-decoration: none; color: color-mix(in srgb, var(--color-text) 66%, transparent); }
.toc a:hover { color: var(--color-accent); }
.toc-disclosure { display: none; }

.ecm-article > section { scroll-margin-top: 96px; }
.ecm-article > section + section { padding-top: 48px; }
.ecm-article h2 { margin: 0 0 16px; font-size: clamp(22px, 2.4vw, 29px); letter-spacing: -0.02em; }
.ecm-article h2 > span:first-child { color: var(--color-accent); margin-right: 12px; }
.ecm-article p { margin: 0 0 14px; font-size: 16.5px; line-height: 1.75; max-width: 72ch; text-wrap: pretty; color: color-mix(in srgb, var(--color-text) 84%, transparent); }
.ecm-article .kw { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.ecm-article .motto { font-family: var(--font-heading); font-weight: var(--font-heading-weight); font-size: clamp(21px, 2.3vw, 28px); color: var(--color-accent-200); max-width: 40ch; margin: 40px 0 0; }
.ecm-article ul { list-style: none; margin: 14px 0 0; padding: 0; display: grid; gap: 14px; }
.ecm-article ul > li { display: grid; grid-template-columns: 20px minmax(0,1fr); gap: 14px; }
.ecm-article ul > li > span:first-child { height: 1px; width: 20px; background: var(--color-accent); margin-top: 13px; }
.ecm-article ul > li strong { font-weight: var(--font-heading-weight); color: var(--color-text); }
.ecm-article ol { list-style: none; margin: 14px 0 0; padding: 0; display: grid; gap: 14px; }
.ecm-article ol > li { display: grid; grid-template-columns: 34px minmax(0,1fr); gap: 14px; align-items: start; }
.ecm-article ol.biblio > li { grid-template-columns: 26px minmax(0,1fr); }
.ecm-article ol > li > span:first-child { font-family: var(--font-heading); font-weight: var(--font-heading-weight); font-size: 13px; color: var(--color-accent); }
.ecm-article ol > li em { color: var(--color-accent-300); font-style: italic; }
.ecm-article sup { font-size: 11px; color: var(--color-accent); vertical-align: super; }
.ecm-eq { display: inline-flex; align-items: center; gap: 14px; margin: 8px 0 18px; padding: 24px 28px; width: fit-content; background: var(--color-surface); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); font-family: var(--font-heading); font-size: 30px; }
.ecm-eq > span:nth-child(3) { display: inline-flex; flex-direction: column; align-items: center; }
.ecm-eq > span:nth-child(3) > span:last-child { border-top: 1.5px solid var(--color-accent-300); padding-top: 3px; margin-top: 3px; }
.ecm-cardgrid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px,1fr)); gap: 18px; margin-top: 18px; }
.ecm-cardgrid .card { padding: 20px; }
.ecm-article .table { max-width: 72ch; margin: 8px 0 18px; }
.ecm-ack { background: var(--color-surface); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); padding: 22px 24px; margin-top: 24px; }
.ecm-ack .cap { font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--color-accent); margin-bottom: 8px; }
.paper-foot-dl { margin-top: 40px; }

/* ── contact ────────────────────────────────────────── */
.section-head { padding-top: 64px; }
.section-head .kicker { font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--color-accent); }
.section-head h1 { margin: 14px 0 0; font-size: clamp(30px,4vw,48px); letter-spacing: -0.025em; }
.section-head .intro { margin: 16px 0 0; font-size: 17px; max-width: 56ch; opacity: .76; }
.contact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px,1fr)); gap: 24px; align-items: start; margin-top: 34px; padding-bottom: 8px; }
.contact-col { display: flex; flex-direction: column; gap: 18px; }
.contact-col .card { padding: 22px; }
.contact-col .card h3 { font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--color-accent); margin: 0 0 8px; font-weight: var(--font-heading-weight); }
.contact-col .email { font-family: var(--font-heading); font-size: 19px; word-break: break-all; }
.contact-col .name { font-family: var(--font-heading); font-size: 19px; }
.card-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 4px; }
.contact-form { background: var(--color-surface); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); padding: 24px; display: flex; flex-direction: column; gap: 14px; }
.contact-form h2 { font-size: 20px; margin: 0; }
.form-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px,1fr)); gap: 14px; }
.form-note { font-size: 11px; opacity: .45; margin: 0; }
.form-err { font-size: 13px; color: var(--color-accent-300); }
.form-ok { font-size: 13px; color: var(--color-accent-300); }
.hp-field { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.captcha-row { display: grid; grid-template-columns: auto 1fr; gap: 12px; align-items: end; }
.captcha-img { border-radius: var(--radius-sm); box-shadow: var(--shadow-sm); display: block; height: 54px; }
.captcha-reload { font-size: 11px; background: none; border: 0; color: var(--color-accent); cursor: pointer; padding: 2px 0; }

/* ── news ───────────────────────────────────────────── */
.news-head { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 20px; padding-top: 64px; }
.composer { background: var(--color-surface); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); padding: 24px; display: flex; flex-direction: column; gap: 14px; margin-top: 24px; }
.composer .row2 { display: grid; grid-template-columns: 180px minmax(200px,1fr); gap: 14px; }
.composer .actions { display: flex; gap: 10px; }
.news-item { display: grid; grid-template-columns: 150px minmax(0,1fr); gap: 28px; padding: 30px 0; border-top: 1px solid var(--color-divider); }
.news-item .date { font-family: var(--font-heading); font-size: 14px; color: var(--color-accent-300); }
.news-item .year { font-size: 11px; text-transform: uppercase; opacity: .4; margin-top: 2px; }
.news-item .title-row { display: flex; align-items: flex-start; gap: 12px; }
.news-item h2 { font-size: 24px; letter-spacing: -0.015em; max-width: 40ch; margin: 0; flex: 1; }
.news-item .body { margin: 12px 0 0; font-size: 16px; line-height: 1.7; max-width: 68ch; opacity: .8; white-space: pre-wrap; }
.empty { font-size: 15px; opacity: .5; padding: 24px 0; }

/* ── forum ──────────────────────────────────────────── */
.crumb { display: flex; align-items: center; gap: 8px; font-size: 13px; opacity: .55; padding-top: 64px; }
.crumb a { text-decoration: none; }
.forum-cats { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px,1fr)); gap: 18px; margin-top: 28px; }
.cat-card { padding: 22px; text-align: left; cursor: pointer; text-decoration: none; color: inherit; display: flex; flex-direction: column; gap: 8px; }
.cat-card:hover { box-shadow: var(--shadow-md); }
.cat-card .card-kicker { display: flex; align-items: center; gap: 8px; }
.cat-card .card-kicker .ico { margin-left: auto; color: var(--color-accent); }
.cat-card .cat-name { font-size: 19px; font-family: var(--font-heading); font-weight: var(--font-heading-weight); }
.cat-card .cat-desc { font-size: 14px; opacity: .8; }
.forum-head { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 20px; margin-top: 10px; }
.forum-head h1 { font-size: clamp(28px,3.4vw,42px); margin: 8px 0 0; }
.topic-table { margin-top: 24px; }
.tt-head, .tt-row { display: grid; grid-template-columns: minmax(0,1fr) 120px 150px; gap: 12px; align-items: center; }
.tt-head { font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: color-mix(in srgb, var(--color-text) 60%, transparent); padding: 8px 0; }
.tt-row { width: 100%; text-align: left; background: transparent; border: 0; border-top: 1px solid var(--color-divider); padding: 18px 0; cursor: pointer; color: inherit; font: inherit; text-decoration: none; }
.tt-row:hover { background: color-mix(in srgb, var(--color-text) 4%, transparent); }
.tt-row .t-title { font-family: var(--font-heading); font-size: 17px; }
.tt-row .t-meta { font-size: 12px; opacity: .5; margin-top: 3px; }
.tt-row .t-count { color: var(--color-accent-300); }
.tt-row .t-last { font-size: 12px; opacity: .6; }
.post { display: grid; grid-template-columns: 160px minmax(0,1fr); gap: 24px; padding: 26px 0; border-top: 1px solid var(--color-divider); }
.post .who { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.post .avatar { width: 26px; height: 26px; border-radius: 50%; background: var(--color-accent-800); color: var(--color-accent-100); display: grid; place-items: center; font-size: 12px; }
.post .nick { font-family: var(--font-heading); font-size: 15px; }
.post .when { font-size: 12px; opacity: .45; width: 100%; }
.post .role { margin-top: 4px; }
.post .body-row { display: flex; align-items: flex-start; gap: 12px; }
.post .body { font-size: 16px; line-height: 1.7; max-width: 68ch; opacity: .84; white-space: pre-wrap; flex: 1; }
.reply-form { background: var(--color-surface); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); padding: 22px; margin-top: 28px; display: flex; flex-direction: column; gap: 14px; }
.reply-form .nickwrap { max-width: 240px; }

/* ── footer ─────────────────────────────────────────── */
.site-footer { flex-shrink: 0; }
.footer-rule { height: 1px; background: linear-gradient(to right, transparent, var(--color-divider) 48px, var(--color-divider) calc(100% - 48px), transparent); }
.footer-inner { display: flex; flex-wrap: wrap; gap: 40px; justify-content: space-between; padding: 40px 0 56px; }
.footer-brand .fb-name { font-family: var(--font-heading); font-size: 17px; }
.footer-brand .fb-tag { font-size: 13px; max-width: 42ch; opacity: .55; margin: 10px 0 0; }
.footer-cols { display: flex; gap: 40px; flex-wrap: wrap; }
.footer-cols .col .cap { font-size: 11px; letter-spacing: .08em; text-transform: uppercase; opacity: .4; margin-bottom: 10px; }
.footer-cols .col a, .footer-cols .col .admin-link { display: block; font-size: 13px; text-decoration: none; color: var(--color-text); padding: 3px 0; opacity: .85; }
.footer-cols .col a:hover, .footer-cols .col .admin-link:hover { color: var(--color-accent); }
.footer-cols .col .admin-link { opacity: .5; }

/* ── dialog / toast ─────────────────────────────────── */
.dialog-backdrop { position: fixed; inset: 0; display: grid; place-items: center; padding: 16px; background: color-mix(in srgb, var(--color-neutral-900) 60%, transparent); z-index: 60; }
.toast { position: fixed; bottom: 22px; left: 50%; transform: translateX(-50%); background: var(--color-surface); box-shadow: var(--shadow-md); border-radius: var(--radius-md); padding: 12px 18px; font-size: 14px; z-index: 70; }

/* ── front-end editor ───────────────────────────────── */
.editbar { position: sticky; top: 0; z-index: 40; background: var(--color-accent-900); box-shadow: var(--shadow-sm); }
.editbar .inner { display: flex; align-items: center; gap: 14px; padding: 8px 0; flex-wrap: wrap; }
.editbar .lbl { font-size: 12px; letter-spacing: .06em; text-transform: uppercase; color: var(--color-accent-200); }
.editbar .grow { margin-left: auto; }
body.edit-mode [data-editable] { position: relative; outline: 1px dashed color-mix(in srgb, var(--color-accent) 55%, transparent); outline-offset: 6px; border-radius: 3px; transition: outline-color .15s; }
body.edit-mode [data-editable]:hover { outline-color: var(--color-accent); }
.edit-pencil { position: absolute; top: -12px; right: -12px; width: 28px; height: 28px; border-radius: 50%; background: var(--color-accent-800); color: var(--color-accent-100); border: 0; cursor: pointer; display: none; place-items: center; z-index: 5; box-shadow: var(--shadow-sm); }
body.edit-mode [data-editable]:hover > .edit-pencil, body.edit-mode [data-editable].editing > .edit-pencil { display: grid; }
.editor-modal .dialog { width: min(760px, 100%); max-height: 86vh; overflow: auto; }
.editor-modal textarea.input { min-height: 220px; font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 13px; line-height: 1.5; }
.editor-toolbar { display: flex; gap: 6px; flex-wrap: wrap; }
.editor-toolbar button { font-size: 12px; }
.editor-hint { font-size: 11px; opacity: .5; }

/* ── admin panel ────────────────────────────────────── */
.admin-wrap { max-width: 1180px; margin: 0 auto; padding: 40px 28px 80px; }
.admin-login { max-width: 380px; margin: 80px auto; }
.admin-login .card, .admin-card { background: var(--color-surface); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); padding: 26px; display: flex; flex-direction: column; gap: 14px; }
.admin-nav { display: flex; gap: 18px; flex-wrap: wrap; margin-bottom: 28px; align-items: center; }
.admin-nav a { font-size: 14px; text-decoration: none; }
.admin-nav .grow { margin-left: auto; }
.admin-section { margin-top: 34px; }
.admin-section h2 { font-size: 20px; margin-bottom: 14px; }
.mod-row { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 16px; align-items: start; padding: 16px 0; border-top: 1px solid var(--color-divider); }
.mod-row .meta { font-size: 12px; opacity: .55; margin-top: 4px; }
.mod-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.badge { font-size: 10px; letter-spacing: .04em; text-transform: uppercase; padding: 2px 8px; border-radius: var(--radius-sm); }
.badge-hidden { background: var(--color-neutral-800); color: var(--color-neutral-200); }
.badge-blocked { background: #4a2530; color: #f4c9d2; }
.flash { padding: 12px 16px; border-radius: var(--radius-md); font-size: 14px; margin-bottom: 18px; }
.flash-ok { background: color-mix(in srgb, var(--color-accent) 16%, var(--color-surface)); color: var(--color-accent-100); }
.flash-err { background: #3a2430; color: #f2c6d0; }

/* ── responsive ─────────────────────────────────────── */
@media (max-width: 900px) {
  .paper-grid { grid-template-columns: 1fr; gap: 24px; }
  .toc { position: static; border-left: 0; padding-left: 0; }
  .toc.collapsible { border: 1px solid var(--color-divider); border-radius: var(--radius-md); padding: 0; }
  .toc.collapsible .toc-list { display: none; padding: 0 16px 12px; }
  .toc.collapsible.open .toc-list { display: flex; flex-direction: column; }
  .toc-disclosure { display: flex; width: 100%; justify-content: space-between; align-items: center; background: none; border: 0; color: inherit; font: inherit; padding: 14px 16px; cursor: pointer; }
}
@media (max-width: 720px) {
  .band-grid { grid-template-columns: 1fr; gap: 24px; }
  .news-item { grid-template-columns: 90px minmax(0,1fr); gap: 16px; }
  .tt-head { display: none; }
  .tt-row { grid-template-columns: 1fr; gap: 4px; }
  .tt-row .t-count::before { content: '· '; }
  .post { grid-template-columns: 1fr; gap: 10px; }
  .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
  .container, .admin-wrap { padding-left: 18px; padding-right: 18px; }
  .hero-inner { padding-top: 52px; }
}
/* keep tap targets comfortable on mobile */
@media (max-width: 720px) { .btn, .nav a, .toc a { min-height: 40px; display: inline-flex; align-items: center; } }