/* =============================================================
   unframe — corporate theme styles
   Monotone base + single orange accent. Mobile-first.
   Brand accent (#FF5A1F) matches the logo artwork.
   ============================================================= */

:root {
	--color-bg-dark: #0E0E0E;
	--color-bg-darker: #080808;
	--color-bg-light: #FFFFFF;
	--color-text-dark: #111111;
	--color-text-light: #F5F5F5;
	--color-gray: #6B7280;
	--color-light-gray: #F3F4F6;
	--color-border: #E5E7EB;
	--color-border-dark: #262626;
	--color-accent: #FF5A1F;
	--color-accent-hover: #E64A12;

	--font-sans: 'Inter', 'Noto Sans JP', 'Helvetica Neue', Helvetica, Arial, 'Hiragino Kaku Gothic ProN', 'Yu Gothic', Meiryo, sans-serif;

	--container: 1160px;
	--gutter: clamp(20px, 5vw, 48px);
	--radius: 4px;
	--header-h: 72px;
}

/* ---------- Reset-ish ---------- */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body.unframe-child,
body {
	margin: 0;
	font-family: var(--font-sans);
	font-size: 16px;
	line-height: 1.85;
	letter-spacing: 0.01em;
	color: var(--color-text-dark);
	background: var(--color-bg-light);
	-webkit-font-smoothing: antialiased;
	text-rendering: optimizeLegibility;
	overflow-wrap: break-word;
}

img, svg { max-width: 100%; height: auto; display: block; }

a { color: inherit; text-decoration: none; }

h1, h2, h3 { line-height: 1.25; letter-spacing: -0.02em; font-weight: 800; margin: 0; }

p { margin: 0 0 1em; line-height: 1.85; }

:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 3px; }

/* ---------- Layout ---------- */
.uf-container {
	width: 100%;
	max-width: var(--container);
	margin-inline: auto;
	padding-inline: var(--gutter);
}

.uf-narrow { max-width: 760px; }

.uf-section { padding-block: clamp(56px, 9vw, 112px); }

.uf-section--light { background: var(--color-bg-light); color: var(--color-text-dark); }
.uf-section--dark { background: var(--color-bg-dark); color: var(--color-text-light); }

.uf-mt { margin-top: 2.5em; }

/* ---------- Skip link ---------- */
.screen-reader-text {
	position: absolute !important;
	width: 1px; height: 1px;
	padding: 0; margin: -1px;
	overflow: hidden; clip: rect(0 0 0 0);
	white-space: nowrap; border: 0;
}
.uf-skip-link:focus {
	position: fixed; top: 8px; left: 8px; z-index: 1000;
	width: auto; height: auto; clip: auto;
	padding: 10px 16px; background: var(--color-accent); color: #fff; border-radius: var(--radius);
}

/* ---------- Buttons ---------- */
.uf-btn {
	display: inline-flex; align-items: center; justify-content: center;
	gap: .5em;
	padding: 12px 22px;
	font-weight: 700; font-size: .95rem; letter-spacing: .01em;
	border-radius: var(--radius);
	border: 1px solid transparent;
	cursor: pointer;
	transition: background-color .18s ease, color .18s ease, border-color .18s ease, transform .05s ease;
}
.uf-btn:active { transform: translateY(1px); }
.uf-btn--lg { padding: 15px 30px; font-size: 1rem; }

.uf-btn--accent { background: var(--color-accent); color: #fff; }
.uf-btn--accent:hover { background: var(--color-accent-hover); color: #fff; }

.uf-btn--ghost { background: transparent; color: var(--color-text-light); border-color: rgba(255,255,255,.32); }
.uf-btn--ghost:hover { border-color: #fff; }

/* ---------- Header ---------- */
.uf-header {
	position: sticky; top: 0; z-index: 100;
	background: rgba(255,255,255,.92);
	backdrop-filter: saturate(180%) blur(8px);
	border-bottom: 1px solid var(--color-border);
}
.uf-header__inner {
	display: flex; align-items: center; justify-content: space-between;
	min-height: var(--header-h);
	gap: 16px;
}
.uf-brand { display: inline-flex; align-items: center; }
.uf-logo-img { height: 38px; width: auto; }
.uf-logo-text { font-weight: 800; font-size: 1.4rem; letter-spacing: -.02em; }

.uf-nav { display: flex; align-items: center; gap: clamp(14px, 2vw, 30px); }
.uf-menu {
	display: flex; align-items: center; gap: clamp(14px, 2vw, 30px);
	list-style: none; margin: 0; padding: 0;
}
.uf-menu a {
	font-weight: 600; font-size: .95rem; color: var(--color-text-dark);
	padding: 6px 2px; position: relative;
}
.uf-menu a::after {
	content: ""; position: absolute; left: 0; right: 0; bottom: -2px;
	height: 2px; background: var(--color-accent);
	transform: scaleX(0); transform-origin: left; transition: transform .18s ease;
}
.uf-menu a:hover::after,
.uf-menu .current-menu-item > a::after { transform: scaleX(1); }

.uf-nav__cta { white-space: nowrap; }

/* Hamburger */
.uf-nav-toggle {
	display: none;
	width: 44px; height: 44px;
	background: transparent; border: 0; cursor: pointer;
	padding: 10px; margin-right: -10px;
}
.uf-nav-toggle__bar {
	display: block; width: 100%; height: 2px; margin: 5px 0;
	background: var(--color-text-dark);
	transition: transform .22s ease, opacity .22s ease;
}
.uf-nav-toggle[aria-expanded="true"] .uf-nav-toggle__bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.uf-nav-toggle[aria-expanded="true"] .uf-nav-toggle__bar:nth-child(2) { opacity: 0; }
.uf-nav-toggle[aria-expanded="true"] .uf-nav-toggle__bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.uf-hero {
	position: relative; overflow: hidden;
	padding-block: clamp(72px, 14vw, 150px);
}
.uf-hero::after {
	/* subtle perspective-frame accent line, echoing the logo */
	content: ""; position: absolute; right: -120px; top: 50%; transform: translateY(-50%);
	width: 420px; height: 320px;
	border: 2px solid var(--color-accent);
	border-right: 0;
	opacity: .16; pointer-events: none;
}
.uf-hero__bgtext {
	position: absolute; left: -0.04em; bottom: -0.16em; z-index: 0;
	margin: 0; pointer-events: none; user-select: none; white-space: nowrap;
	font-size: clamp(7rem, 26vw, 22rem); font-weight: 800; line-height: 1;
	letter-spacing: -0.05em; color: rgba(255, 255, 255, 0.055);
}
.uf-hero__inner { position: relative; z-index: 1; max-width: 880px; }
.uf-hero__eyebrow {
	text-transform: uppercase; letter-spacing: .22em; font-size: .72rem;
	color: var(--color-accent); font-weight: 700; margin: 0 0 18px;
}
.uf-hero__title {
	font-size: clamp(2.6rem, 8vw, 5.2rem);
	letter-spacing: -0.03em; line-height: 1.02; margin: 0 0 .35em;
}
/* Explicit colour so a parent theme's bare `h1` rule can't override the
   inherited light colour and render the headline near-black on the dark hero.
   The compound selector (0,2,0) beats element-level `h1` and block-theme
   :where() rules. Soft off-white = readable but refined, not stark white. */
.uf-section--dark .uf-hero__title { color: rgba(255, 255, 255, 0.86); }
.uf-hero__sub {
	font-size: clamp(1.1rem, 2.4vw, 1.5rem); font-weight: 600;
	color: #fff; max-width: 36ch; margin: 0 0 .9em;
}
.uf-hero__jp {
	color: #c7c7c7; max-width: 52ch; margin: 0 0 2em; font-size: 1rem;
}
.uf-hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin: 0; }

/* ---------- Eyebrow / headings ---------- */
.uf-eyebrow {
	display: inline-flex; align-items: center; gap: 10px;
	text-transform: uppercase; letter-spacing: .18em; font-size: .74rem;
	font-weight: 700; color: var(--color-gray); margin: 0 0 18px;
}
.uf-eyebrow--light { color: #9a9a9a; }
.uf-eyebrow__mark { width: 22px; height: 2px; background: var(--color-accent); }

.uf-h2 { font-size: clamp(1.7rem, 4vw, 2.6rem); max-width: 22ch; }
.uf-section--dark .uf-h2 { color: #fff; }
.uf-h3 { font-size: clamp(1.25rem, 2.4vw, 1.6rem); margin: 0 0 .6em; }

.uf-section__head { margin-bottom: clamp(36px, 6vw, 64px); }
.uf-section__more { margin-top: 40px; }

.uf-lead { font-size: 1.15rem; font-weight: 500; }
.uf-muted { color: var(--color-gray); }
.uf-section--dark .uf-muted { color: #9a9a9a; }
.uf-note { font-size: .9rem; color: var(--color-gray); margin-top: 28px; }

.uf-link { color: var(--color-accent); font-weight: 700; }
.uf-link:hover { text-decoration: underline; }

/* ---------- About ---------- */
.uf-about { display: grid; gap: clamp(28px, 5vw, 64px); grid-template-columns: 1fr; }
.uf-about__head { max-width: 30ch; }
.uf-about__more { margin-top: 1.4em; }

/* ---------- Cards (services) ---------- */
.uf-cards {
	list-style: none; margin: 0; padding: 0;
	display: grid; gap: 1px;
	background: var(--color-border);
	border: 1px solid var(--color-border);
	border-radius: var(--radius); overflow: hidden;
	grid-template-columns: 1fr;
}
.uf-card {
	background: var(--color-bg-light);
	padding: clamp(26px, 4vw, 40px);
	transition: background-color .2s ease;
}
.uf-card:hover { background: var(--color-light-gray); }
.uf-card__num {
	display: inline-block; font-size: .8rem; font-weight: 700;
	color: var(--color-accent); letter-spacing: .1em; margin-bottom: 14px;
}
.uf-card__title { font-size: 1.2rem; margin: 0 0 .15em; }
.uf-card__title-jp { font-size: .9rem; color: var(--color-gray); margin: 0 0 1em; font-weight: 600; }
.uf-card__body { font-size: .98rem; margin: 0; color: #333; }

/* ---------- Strengths ---------- */
.uf-strengths {
	list-style: none; margin: 0; padding: 0;
	display: grid; gap: clamp(28px, 4vw, 48px);
	grid-template-columns: 1fr;
}
.uf-strength { border-top: 1px solid var(--color-border-dark); padding-top: 26px; }
.uf-strength__num { color: var(--color-accent); font-weight: 700; font-size: .85rem; letter-spacing: .1em; }
.uf-strength__title { font-size: 1.3rem; margin: .4em 0 .4em; color: #fff; }
.uf-strength__body { color: #b6b6b6; margin: 0; }

/* ---------- Focus areas (cases) ---------- */
.uf-focus { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; }
.uf-focus__item {
	display: flex; align-items: flex-start; gap: 16px;
	padding: 22px 0; border-bottom: 1px solid var(--color-border);
	font-size: 1.08rem; font-weight: 500;
}
.uf-focus__item:first-child { border-top: 1px solid var(--color-border); }
.uf-focus__mark { flex: none; width: 10px; height: 10px; margin-top: .55em; background: var(--color-accent); }

/* ---------- Split layout (about/contact) ---------- */
.uf-split { display: grid; gap: clamp(32px, 5vw, 64px); grid-template-columns: 1fr; }

.uf-deflist { margin: 0; display: grid; grid-template-columns: 1fr; gap: 0; }
.uf-deflist dt { font-size: .74rem; font-weight: 700; color: var(--color-gray); text-transform: uppercase; letter-spacing: .04em; padding-top: 18px; }
.uf-deflist dd {
	margin: 0; padding: 2px 0 18px;
	border-bottom: 1px solid rgba(17, 17, 17, 0.08);
	font-weight: 700; font-size: clamp(1rem, 1.6vw, 1.15rem);
	letter-spacing: -0.01em; line-height: 1.55; overflow-wrap: anywhere;
}
.uf-deflist dd a { overflow-wrap: anywhere; }

.uf-list { padding-left: 0; list-style: none; margin: 0; }
.uf-list li { padding: 14px 0; border-bottom: 1px solid var(--color-border); }
.uf-list li strong { font-weight: 700; }

/* ---------- Rich text ---------- */
.uf-richtext h2 { margin-top: 1.8em; }
.uf-richtext h3 { margin-top: 1.6em; }
.uf-richtext ul, .uf-richtext ol { padding-left: 1.3em; }
.uf-richtext li { margin-bottom: .4em; }
.uf-richtext a { color: var(--color-accent); text-decoration: underline; }

/* ---------- CTA ---------- */
.uf-cta { background: var(--color-bg-darker); color: var(--color-text-light); text-align: center; }
.uf-cta__inner { max-width: 720px; margin-inline: auto; }
.uf-cta__title { font-size: clamp(1.6rem, 4vw, 2.4rem); color: #fff; margin: 0 0 .5em; }
.uf-cta__sub { color: #b6b6b6; margin: 0 0 2em; }
.uf-cta__actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 14px; margin: 0; }

/* ---------- Page hero ---------- */
.uf-pagehero { padding-block: clamp(56px, 9vw, 104px); }
.uf-pagehero__title { font-size: clamp(2rem, 6vw, 3.4rem); color: #fff; margin: .2em 0 0; }
.uf-pagehero__lead { color: #b6b6b6; margin-top: 1em; max-width: 60ch; }

/* ---------- Contact form ---------- */
.uf-form { display: grid; gap: 20px; max-width: 560px; }
.uf-field { display: grid; gap: 8px; margin: 0; }
.uf-field label { font-weight: 600; font-size: .92rem; }
.uf-req { color: var(--color-accent); }
.uf-field input,
.uf-field textarea {
	width: 100%; font: inherit; color: inherit;
	padding: 12px 14px; background: #fff;
	border: 1px solid var(--color-border); border-radius: var(--radius);
	transition: border-color .15s ease, box-shadow .15s ease;
}
.uf-field input:focus,
.uf-field textarea:focus {
	border-color: var(--color-accent);
	box-shadow: 0 0 0 3px rgba(255,90,31,.14);
	outline: none;
}
.uf-field--consent label { display: flex; gap: 10px; align-items: flex-start; font-weight: 500; font-size: .92rem; }
.uf-field--consent input { width: auto; margin-top: .3em; }
.uf-field--consent a { color: var(--color-accent); text-decoration: underline; }
.uf-submit { margin: 0; }
.uf-hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.uf-form-notice { padding: 14px 18px; border-radius: var(--radius); margin-bottom: 24px; font-weight: 600; }
.uf-form-notice--ok { background: #ecfdf5; color: #065f46; border: 1px solid #a7f3d0; }
.uf-form-notice--err { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }

/* ---------- Post list (news/archive) ---------- */
.uf-postlist { list-style: none; margin: 0; padding: 0; }
.uf-postlist__link { display: flex; gap: 18px; align-items: baseline; padding: 20px 0; border-bottom: 1px solid var(--color-border); }
.uf-postlist__date { color: var(--color-gray); font-size: .85rem; flex: none; }
.uf-postlist__title { font-weight: 600; }
.uf-postlist__link:hover .uf-postlist__title { color: var(--color-accent); }

/* ---------- 404 ---------- */
.uf-404 { text-align: center; }
.uf-404__inner { margin-inline: auto; }
.uf-404__code { font-size: clamp(4rem, 16vw, 9rem); font-weight: 800; color: var(--color-accent); line-height: 1; margin: 0; }

/* ---------- Footer ---------- */
.uf-footer { background: var(--color-bg-dark); color: var(--color-text-light); }
.uf-footer__grid {
	display: grid; gap: clamp(36px, 6vw, 72px);
	grid-template-columns: 1fr;
	padding-block: clamp(48px, 7vw, 80px);
}
.uf-brand--footer .uf-logo-img { height: 40px; }
.uf-footer__company { font-weight: 700; margin: 16px 0 12px; color: #fff; letter-spacing: -0.01em; }
.uf-footer__desc { color: rgba(245, 245, 245, 0.68); font-size: 15px; line-height: 1.9; max-width: 46ch; margin: 0; }
.uf-footer__sns { list-style: none; display: flex; gap: 18px; padding: 0; margin: 20px 0 0; }
.uf-footer__sns a { color: rgba(245, 245, 245, 0.78); font-size: .9rem; font-weight: 600; transition: color .2s ease; }
.uf-footer__sns a:hover { color: var(--color-accent); }

.uf-footer__nav { display: flex; flex-direction: column; }
.uf-footer__menu {
	list-style: none; padding: 0; margin: 0;
	display: flex; flex-direction: column; gap: 14px;
}
.uf-footer__menu a {
	display: inline-flex; width: fit-content;
	color: rgba(245, 245, 245, 0.78);
	font-weight: 600; font-size: 15px; line-height: 1.5; letter-spacing: .01em;
	transition: color .2s ease, transform .2s ease;
}
.uf-footer__menu a:hover { color: var(--color-accent); transform: translateX(2px); }

.uf-footer__bar { border-top: 1px solid var(--color-border-dark); padding-block: 22px; }
.uf-footer__bar small { color: #8a8a8a; font-size: .82rem; }

/* =============================================================
   Responsive
   ============================================================= */
@media (min-width: 600px) {
	.uf-cards { grid-template-columns: repeat(2, 1fr); }
	.uf-strengths { grid-template-columns: repeat(3, 1fr); }
	.uf-deflist { grid-template-columns: 120px minmax(0, 1fr); column-gap: 28px; align-items: baseline; }
	.uf-deflist dt { padding-top: 18px; }
	.uf-deflist dd { padding-left: 0; }
}

@media (min-width: 768px) {
	.uf-about { grid-template-columns: 0.9fr 1.1fr; align-items: start; }
	.uf-split { grid-template-columns: 1.4fr 0.8fr; }
	.uf-footer__grid {
		grid-template-columns: minmax(0, 1.2fr) minmax(220px, 0.8fr);
		gap: clamp(40px, 7vw, 96px);
		align-items: start;
	}
}

@media (min-width: 900px) {
	.uf-cards--detailed { grid-template-columns: repeat(2, 1fr); }
	.uf-cards { grid-template-columns: repeat(3, 1fr); }
}

/* ---------- Mobile nav ---------- */
@media (max-width: 860px) {
	.uf-nav-toggle { display: block; }
	.uf-nav {
		position: fixed; inset: var(--header-h) 0 auto 0;
		flex-direction: column; align-items: stretch;
		gap: 0;
		background: var(--color-bg-light);
		border-bottom: 1px solid var(--color-border);
		padding: 8px var(--gutter) 24px;
		transform: translateY(-12px);
		opacity: 0; visibility: hidden; pointer-events: none;
		transition: opacity .2s ease, transform .2s ease, visibility .2s ease;
		max-height: calc(100vh - var(--header-h)); overflow-y: auto;
	}
	.uf-nav.is-open { opacity: 1; visibility: visible; transform: none; pointer-events: auto; }
	.uf-menu { flex-direction: column; align-items: stretch; gap: 0; width: 100%; }
	.uf-menu li { border-bottom: 1px solid var(--color-border); }
	.uf-menu a { display: block; padding: 16px 2px; font-size: 1.05rem; }
	.uf-menu a::after { display: none; }
	.uf-nav__cta { margin-top: 18px; width: 100%; }
}

@media (min-width: 861px) {
	.uf-nav { display: flex !important; }
}

/* ---------- Motion preferences ---------- */
@media (prefers-reduced-motion: reduce) {
	* { animation-duration: .01ms !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
}