@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+TC:wght@400;500;600;700&family=Inter:wght@500;600;700&display=swap");

:root {
	--ink: #16212b;
	--muted: #60707c;
	--navy: #10202d;
	--navy-soft: #17303f;
	--blue: #316b88;
	--blue-light: #eaf2f5;
	--line: #dce4e8;
	--surface: #f6f8f9;
	--white: #fff;
	--max-width: 1160px;
}

* { box-sizing: border-box; }
html { scroll-behavior: auto; }
body {
	margin: 0;
	overflow-x: hidden;
	color: var(--ink);
	background: var(--white);
	font-family: "Noto Sans TC", Arial, sans-serif;
	font-size: 16px;
	line-height: 1.8;
}
a { color: inherit; text-decoration: none; }
.container { width: min(calc(100% - 48px), var(--max-width)); margin: 0 auto; }
.section { padding: 92px 0; }
.section-label, .eyebrow {
	margin: 0 0 14px;
	color: var(--blue);
	font-family: Inter, Arial, sans-serif;
	font-size: 12px;
	font-weight: 700;
	letter-spacing: 0.18em;
}
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { line-height: 1.35; }
h2 { margin-bottom: 28px; font-size: clamp(28px, 3vw, 36px); letter-spacing: -0.04em; }
h3 { margin-bottom: 12px; font-size: 19px; }
p { color: var(--muted); }

.site-header {
	position: absolute;
	z-index: 2;
	top: 0;
	width: 100%;
	border-bottom: 1px solid rgba(255,255,255,.16);
	color: var(--white);
}
.nav-wrap { display: flex; align-items: center; justify-content: space-between; min-height: 78px; }
.brand { display: flex; align-items: center; gap: 13px; }
.brand-mark {
	display: grid;
	width: 41px;
	height: 41px;
	place-items: center;
	border: 1px solid rgba(255,255,255,.8);
	font-family: Inter, Arial, sans-serif;
	font-size: 14px;
	font-weight: 700;
	letter-spacing: .08em;
}
.brand strong, .brand small { display: block; line-height: 1.35; }
.brand strong { font-size: 16px; letter-spacing: .08em; }
.brand small { color: rgba(255,255,255,.7); font-family: Inter, Arial, sans-serif; font-size: 9px; letter-spacing: .05em; }
nav { display: flex; align-items: center; gap: 28px; font-size: 14px; }
.nav-contact { padding: 8px 16px; border: 1px solid rgba(255,255,255,.5); }

.hero {
	display: grid;
	min-height: 780px;
	align-items: center;
	background:
		linear-gradient(90deg, rgba(8,18,26,.96) 0%, rgba(8,18,26,.86) 35%, rgba(8,18,26,.4) 65%, rgba(8,18,26,.1) 100%),
		url("../../images/hero-server-room.jpg") center / cover;
	color: var(--white);
}
.hero-content { padding: 116px 0 52px; }
.hero .eyebrow { color: #85b5c7; }
h1 { max-width: 720px; margin-bottom: 25px; font-size: clamp(40px, 5.5vw, 67px); letter-spacing: -.07em; }
.hero-text { max-width: 630px; margin-bottom: 38px; color: rgba(255,255,255,.8); font-size: 18px; }
.hero-actions, .contact-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.button {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-height: 48px;
	padding: 0 22px;
	border: 1px solid transparent;
	font-size: 14px;
	font-weight: 700;
	letter-spacing: .04em;
	transition: .2s ease;
}
.button.primary { background: #397894; color: var(--white); }
.button.primary:hover { background: #4a8ba7; }
.button.secondary { border-color: rgba(255,255,255,.5); color: var(--white); }
.button.secondary:hover { background: rgba(255,255,255,.1); }
.hero-capabilities { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; max-width: 930px; margin: 34px 0 15px; padding: 1px; background: rgba(133,181,199,.3); list-style: none; }
.hero-capabilities a { position: relative; display: block; min-height: 74px; padding: 11px 34px 10px 12px; background: rgba(10,25,35,.88); color: rgba(255,255,255,.9); transition: background-color .18s ease; }
.hero-capabilities a:after { position: absolute; top: 11px; right: 12px; color: #85b5c7; content: "↗"; font-family: Inter, Arial, sans-serif; font-size: 13px; opacity: .55; transition: opacity .18s ease, transform .18s ease; }
.hero-capabilities strong, .hero-capabilities small { display: block; }
.hero-capabilities strong { font-size: 13px; letter-spacing: .04em; }
.hero-capabilities small { margin-top: 4px; color: #a9c5cf; font-size: 12px; line-height: 1.55; }
.hero-capabilities a:hover, .hero-capabilities a:focus-visible { background: rgba(49,107,136,.55); outline: none; }
.hero-capabilities a:hover:after, .hero-capabilities a:focus-visible:after { opacity: 1; transform: translate(2px, -2px); }
.hero-support { margin: 0; color: #a9c5cf; font-size: 13px; letter-spacing: .04em; }

.intro { border-bottom: 1px solid var(--line); }
.intro-grid, .about-grid { display: grid; grid-template-columns: 1.25fr .75fr; gap: 72px; }
.intro h2 { margin-bottom: 0; }
.intro p:last-child { margin: 30px 0 0; font-size: 18px; }
.services { background: var(--surface); }
.service-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.service-card { min-height: 218px; padding: 28px; scroll-margin-top: 20px; background: var(--white); transition: background-color .18s ease, box-shadow .18s ease; }
.service-card-wide { grid-column: 1 / -1; }
.service-card:target { background: #edf6f8; box-shadow: inset 0 0 0 2px #6f9aaa; }
.service-card:hover { background: #f9fcfc; }
.service-top { display: flex; align-items: flex-start; min-height: 54px; margin-bottom: 17px; }
.service-icon { width: 48px; height: 48px; fill: none; stroke: #6f9aaa; stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.4; }
.service-card p { margin-bottom: 0; font-size: 15px; }

.cases-heading { max-width: 760px; margin-bottom: 34px; }
.cases-heading h2 { margin-bottom: 0; }
.cases-heading > p { margin: 16px 0 0; font-size: 17px; }
.case-list { border-top: 1px solid var(--line); }
.case-card { display: grid; grid-template-columns: 180px 1fr; gap: 54px; padding: 37px 0; border-bottom: 1px solid var(--line); }
.case-meta strong { display: block; }
.case-meta strong { color: var(--blue); font-size: 15px; }
.case-card h3 { margin-bottom: 8px; font-size: 23px; }
.case-card p { max-width: 780px; margin-bottom: 17px; }
.case-card ul { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; list-style: none; }
.case-card li { padding: 5px 10px; background: var(--blue-light); color: #416979; font-size: 13px; }

.approach { background: var(--navy); color: var(--white); }
.approach .section-label { color: #85b5c7; }
.approach-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 72px; }
.steps { margin: 0; padding: 0; list-style: none; }
.steps li { position: relative; padding: 22px 0 22px 28px; border-top: 1px solid rgba(255,255,255,.15); }
.steps li:last-child { border-bottom: 1px solid rgba(255,255,255,.15); }
.steps li:before { position: absolute; top: 31px; left: 1px; width: 8px; height: 8px; border: 1px solid #85b5c7; border-radius: 50%; content: ""; }
.steps h3 { margin-bottom: 3px; }
.steps p { margin: 0; color: rgba(255,255,255,.62); font-size: 15px; }

.fit { background: var(--blue-light); }
.fit-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 72px; }
.fit h2 { margin-bottom: 0; }
.fit-list { border-top: 1px solid #c9dde3; }
.fit-list p { position: relative; margin: 0; padding: 17px 0 17px 24px; border-bottom: 1px solid #c9dde3; color: #355665; }
.fit-list p:before { position: absolute; left: 0; content: "—"; color: var(--blue); }

.about p { margin-bottom: 28px; }
.principles { display: grid; grid-template-columns: repeat(2, 1fr); margin: 0; padding: 0; border-top: 1px solid var(--line); list-style: none; }
.principles li { display: grid; grid-template-columns: 68px 1fr; gap: 8px; align-items: baseline; padding: 11px 0; border-bottom: 1px solid var(--line); }
.principles li:nth-child(odd) { padding-right: 18px; }
.principles li:nth-child(even) { padding-left: 18px; border-left: 1px solid var(--line); }
.principles strong { color: var(--blue); font-size: 14px; }
.principles small { color: var(--muted); font-size: 13px; }

.faq { border-top: 1px solid var(--line); background: var(--surface); }
.faq-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 72px; }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { padding: 0 14px; border-bottom: 1px solid var(--line); transition: background-color .18s ease; }
.faq-list details[open] { background: #edf6f8; }
.faq-list summary { position: relative; padding: 18px 38px 18px 0; cursor: pointer; font-weight: 700; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary:after { position: absolute; right: 3px; content: "+"; color: var(--blue); font-family: Inter, Arial, sans-serif; font-size: 20px; font-weight: 500; }
.faq-list details[open] summary:after { content: "−"; }
.faq-list details p { margin: 0; padding: 0 34px 18px 0; font-size: 15px; }

.contact { padding: 92px 0 0; background: #eef3f5; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; }
.contact h2 { max-width: 500px; margin-bottom: 15px; }
.contact .line { border-color: #83a19a; color: #35675b; }
.contact-info { display: flex; gap: 32px; align-items: flex-start; }
dl { flex: 1; margin: 0; }
dl div { display: grid; grid-template-columns: 58px 1fr; padding: 9px 0; border-bottom: 1px solid var(--line); font-size: 14px; }
dt { color: var(--muted); }
dd { min-width: 0; margin: 0; overflow-wrap: anywhere; font-weight: 500; }
dd a:hover { color: var(--blue); }
.qr-wrap { display: flex; flex-direction: column; gap: 8px; color: var(--muted); font-size: 12px; text-align: center; }
.qr-wrap img { display: block; border: 6px solid var(--white); }
.copyright { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-top: 72px; padding: 20px 0; border-top: 1px solid var(--line); }
.copyright div { display: flex; flex-wrap: wrap; gap: 4px 16px; color: var(--muted); font-size: 12px; }
.copyright strong { color: var(--ink); font-weight: 700; }
.copyright p { flex: none; margin: 0; font-size: 12px; }
.back-to-top {
	position: fixed;
	z-index: 3;
	right: 22px;
	bottom: 22px;
	display: grid;
	width: 46px;
	height: 46px;
	place-items: center;
	border: 1px solid rgba(255,255,255,.2);
	background: rgba(16,32,45,.92);
	color: var(--white);
	font-family: Inter, Arial, sans-serif;
	font-size: 20px;
	line-height: 1;
	opacity: 0;
	pointer-events: none;
	transform: translateY(8px);
	transition: opacity .18s ease, transform .18s ease, background-color .18s ease;
}
.back-to-top.visible { opacity: 1; pointer-events: auto; transform: translateY(0); }
.back-to-top:hover { background: var(--blue); }

@media (max-width: 980px) {
	.intro-grid, .about-grid, .approach-grid, .contact-grid, .fit-grid, .faq-grid { grid-template-columns: 1fr; gap: 28px; }
	.intro p:last-child { margin-top: 0; }
}

@media (max-width: 760px) {
	.container { width: min(calc(100% - 32px), var(--max-width)); }
	.section { padding: 72px 0; }
	.site-header { position: absolute; }
	.nav-wrap { min-height: 70px; }
	.brand { min-width: 0; }
	.brand strong { font-size: 15px; white-space: nowrap; }
	.brand small { display: none; }
	nav { gap: 14px; }
	nav a:not(.nav-contact) { display: none; }
	.nav-contact { padding: 6px 12px; font-size: 13px; }
	.hero { min-height: 740px; background-position: 60% center; }
	.hero-content { padding: 92px 0 38px; }
	h1 { font-size: 44px; }
	.hero-text { font-size: 16px; }
	.hero-capabilities { grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 28px; }
	.hero-capabilities a { min-height: 42px; padding: 9px 10px; }
	.hero-capabilities a:after { display: none; }
	.hero-capabilities strong { font-size: 12px; }
	.hero-capabilities small { display: none; }
	.intro p:last-child { font-size: 16px; }
	.case-card { grid-template-columns: 1fr; gap: 16px; padding: 28px 0; }
	.case-card h3 { font-size: 20px; }
	.service-grid { grid-template-columns: 1fr; }
	.service-card-wide { grid-column: auto; }
	.service-card { min-height: auto; padding: 24px; }
	.service-top { min-height: 50px; margin-bottom: 14px; }
	.service-icon { width: 42px; height: 42px; }
	.principles { grid-template-columns: 1fr; }
	.principles li:nth-child(odd), .principles li:nth-child(even) { padding-right: 0; padding-left: 0; border-left: 0; }
	.contact { padding-top: 72px; }
	.contact-info { display: block; }
	.qr-wrap { width: fit-content; margin-top: 24px; }
	.copyright { display: block; margin-top: 52px; }
	.copyright p { margin-top: 12px; }
	.back-to-top { right: 16px; bottom: 16px; }
}

@media (max-width: 380px) {
	.container { width: min(calc(100% - 24px), var(--max-width)); }
	.brand { gap: 9px; }
	.brand-mark { width: 36px; height: 36px; font-size: 12px; }
	.brand strong { font-size: 14px; letter-spacing: .04em; }
	.nav-contact { padding: 5px 9px; font-size: 12px; }
	.hero { min-height: 620px; }
	h1 { font-size: 39px; }
	.button { padding: 0 17px; }
}

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