/* ==========================================================================
   星链科技 · 首页样式
   深色科技风 · 单页官网
   ========================================================================== */

:root {
	--bg: #05070d;
	--bg-2: #080c15;
	--bg-3: #04060b;
	--surface: #0c121e;
	--surface-hi: #0e1b2a;
	--text: #f2f6ff;
	--text-2: #8c9bb4;
	--text-3: #5d6b82;
	--text-4: #465468;
	--cyan: #22e1f0;
	--blue: #3d7bff;
	--green: #3de7b0;
	--cyan-soft: #7fd8e8;
	--border: #141d2b;
	--border-2: #1b2739;
	--border-3: #16202e;
	--grad: linear-gradient(135deg, #22e1f0 0%, #3d7bff 100%);
	--grad-soft: linear-gradient(110deg, #22e1f0 0%, #3d7bff 100%);
	--radius: 16px;
	--radius-sm: 10px;
	--ease: cubic-bezier(0.22, 0.61, 0.36, 1);
	--header-h: 76px;
	--font: "Inter", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Segoe UI", system-ui, -apple-system, sans-serif;
	--mono: "JetBrains Mono", "SFMono-Regular", "Consolas", "Menlo", monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
	margin: 0;
	background: var(--bg);
	color: var(--text);
	font-family: var(--font);
	font-size: 14px;
	line-height: 1.6;
	-webkit-font-smoothing: antialiased;
	text-rendering: optimizeLegibility;
	overflow-x: hidden;
}

h1, h2, h3, h4, p, ul, figure { margin: 0; }
ul { padding: 0; list-style: none; }
button { font-family: inherit; }
svg { display: block; }

.icon { width: 20px; height: 20px; stroke: currentColor; fill: none; }
.svg-sprite { position: absolute; width: 0; height: 0; overflow: hidden; }

.container { width: 100%; max-width: 1320px; margin: 0 auto; padding: 0 60px; }

/* ---------- 背景层 ---------- */
.bg-canvas {
	position: fixed;
	inset: 0;
	width: 100%;
	height: 100%;
	z-index: -3;
	opacity: 0.55;
	pointer-events: none;
}
.bg-grid {
	position: fixed;
	inset: -20%;
	z-index: -4;
	background-image:
		linear-gradient(to right, rgba(61, 123, 255, 0.06) 1px, transparent 1px),
		linear-gradient(to bottom, rgba(61, 123, 255, 0.06) 1px, transparent 1px);
	background-size: 64px 64px;
	-webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 25%, #000 0%, transparent 75%);
	mask-image: radial-gradient(ellipse 90% 70% at 50% 25%, #000 0%, transparent 75%);
	animation: gridDrift 24s linear infinite;
	pointer-events: none;
}
.bg-vignette {
	position: fixed;
	inset: 0;
	z-index: -2;
	background: radial-gradient(ellipse 80% 60% at 50% -10%, rgba(34, 225, 240, 0.06), transparent 60%),
		radial-gradient(ellipse 70% 50% at 100% 120%, rgba(61, 123, 255, 0.06), transparent 60%);
	pointer-events: none;
}
@keyframes gridDrift {
	0% { background-position: 0 0, 0 0; }
	100% { background-position: 64px 64px, 64px 64px; }
}

/* ---------- 背景极光能量流 ---------- */
.bg-aurora {
	position: fixed;
	inset: -20%;
	z-index: -3;
	overflow: hidden;
	pointer-events: none;
}
.aurora {
	position: absolute;
	width: 44vw;
	height: 44vw;
	border-radius: 50%;
	mix-blend-mode: screen;
	opacity: 0.5;
	will-change: transform, opacity;
}
.a1 {
	top: -12%;
	left: -6%;
	background: radial-gradient(circle, rgba(34, 225, 240, 0.85), rgba(34, 225, 240, 0) 66%);
	animation: auroraA 22s ease-in-out infinite;
}
.a2 {
	top: -8%;
	right: -10%;
	background: radial-gradient(circle, rgba(61, 123, 255, 0.9), rgba(61, 123, 255, 0) 66%);
	animation: auroraB 27s ease-in-out infinite;
}
.a3 {
	bottom: -16%;
	left: 22%;
	background: radial-gradient(circle, rgba(61, 231, 176, 0.7), rgba(61, 231, 176, 0) 66%);
	animation: auroraC 25s ease-in-out infinite;
}
.a4 {
	top: 30%;
	left: 42%;
	background: radial-gradient(circle, rgba(122, 92, 255, 0.75), rgba(122, 92, 255, 0) 66%);
	animation: auroraD 31s ease-in-out infinite;
}
@keyframes auroraA {
	0%, 100% { transform: translate3d(0, 0, 0) scale(1); opacity: 0.42; }
	50% { transform: translate3d(14vw, 12vh, 0) scale(1.22); opacity: 0.62; }
}
@keyframes auroraB {
	0%, 100% { transform: translate3d(0, 0, 0) scale(1.1); opacity: 0.5; }
	50% { transform: translate3d(-13vw, 14vh, 0) scale(0.88); opacity: 0.68; }
}
@keyframes auroraC {
	0%, 100% { transform: translate3d(0, 0, 0) scale(1); opacity: 0.34; }
	50% { transform: translate3d(12vw, -14vh, 0) scale(1.28); opacity: 0.56; }
}
@keyframes auroraD {
	0%, 100% { transform: translate3d(0, 0, 0) scale(0.92); opacity: 0.3; }
	50% { transform: translate3d(-18vw, -10vh, 0) scale(1.18); opacity: 0.52; }
}


/* ---------- 滚动进度条 ---------- */
.scroll-progress {
	position: fixed;
	top: 0;
	left: 0;
	right: 0;
	height: 3px;
	z-index: 200;
	background: rgba(20, 29, 43, 0.6);
}
.scroll-progress span {
	display: block;
	height: 100%;
	width: 0;
	background: var(--grad);
	box-shadow: 0 0 12px rgba(34, 225, 240, 0.7);
	transition: width 0.1s linear;
}

/* ---------- 通用按钮 ---------- */
.btn {
	position: relative;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 8px;
	border: 1px solid transparent;
	border-radius: var(--radius-sm);
	padding: 12px 22px;
	font-size: 14px;
	font-weight: 600;
	line-height: 1;
	cursor: pointer;
	overflow: hidden;
	transition: transform 0.22s var(--ease), box-shadow 0.22s var(--ease), border-color 0.22s var(--ease), background 0.22s var(--ease);
	white-space: nowrap;
}
.btn .icon { width: 17px; height: 17px; }
.btn-sm { padding: 9px 16px; font-size: 13px; }

.btn-primary {
	background: var(--grad);
	color: #04121a;
	font-weight: 700;
	box-shadow: 0 8px 24px -8px rgba(34, 225, 240, 0.6);
}
.btn-primary::after {
	content: "";
	position: absolute;
	top: 0;
	left: -60%;
	width: 40%;
	height: 100%;
	background: linear-gradient(100deg, transparent, rgba(255, 255, 255, 0.55), transparent);
	transform: skewX(-18deg);
	animation: shimmer 3.6s var(--ease) infinite;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 32px -8px rgba(34, 225, 240, 0.75); }

.btn-ghost {
	background: rgba(11, 20, 32, 0.85);
	border-color: #22394d;
	color: var(--text);
}
.btn-ghost:hover { border-color: rgba(34, 225, 240, 0.6); transform: translateY(-2px); color: var(--cyan-soft); }

.btn-outline {
	background: rgba(15, 42, 56, 0.5);
	border-color: rgba(34, 225, 240, 0.7);
	color: var(--cyan);
	font-weight: 700;
}
.btn-outline:hover { background: rgba(34, 225, 240, 0.12); transform: translateY(-2px); }

@keyframes shimmer {
	0% { left: -60%; }
	55% { left: 130%; }
	100% { left: 130%; }
}

/* ---------- 顶部导航 ---------- */
.site-header {
	position: fixed;
	top: 0;
	left: 0;
	right: 0;
	z-index: 150;
	height: var(--header-h);
	display: flex;
	align-items: center;
	background: rgba(5, 7, 13, 0.72);
	border-bottom: 1px solid var(--border);
	-webkit-backdrop-filter: blur(16px);
	backdrop-filter: blur(16px);
	transition: background 0.3s var(--ease), border-color 0.3s var(--ease);
}
.site-header.is-scrolled { background: rgba(5, 7, 13, 0.92); }

.header-inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 24px;
}

.brand {
	display: inline-flex;
	align-items: center;
	gap: 10px;
	background: none;
	border: none;
	padding: 0;
	cursor: pointer;
	color: var(--text);
}
.brand-mark {
	display: grid;
	place-items: center;
	width: 32px;
	height: 32px;
	border-radius: 9px;
	background: var(--grad);
	box-shadow: 0 0 18px -2px rgba(34, 225, 240, 0.6);
}
.brand-mark .icon { width: 18px; height: 18px; color: #fff; stroke-width: 1.9; }
.brand-mark--sm { width: 28px; height: 28px; border-radius: 8px; }
.brand-mark--sm .icon { width: 15px; height: 15px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-cn { font-size: 17px; font-weight: 700; letter-spacing: 0.2px; }
.brand-en { font-size: 9px; letter-spacing: 1.6px; color: var(--text-3); }

.main-nav { display: flex; align-items: center; gap: 36px; }
.nav-link {
	position: relative;
	background: none;
	border: none;
	padding: 6px 0;
	color: var(--text-2);
	font-size: 14px;
	font-weight: 500;
	cursor: pointer;
	transition: color 0.2s var(--ease);
}
.nav-link::after {
	content: "";
	position: absolute;
	left: 0;
	bottom: 0;
	width: 100%;
	height: 2px;
	background: var(--grad);
	transform: scaleX(0);
	transform-origin: left;
	transition: transform 0.28s var(--ease);
	border-radius: 2px;
}
.nav-link:hover { color: var(--text); }
.nav-link.is-active { color: var(--text); font-weight: 600; }
.nav-link.is-active::after { transform: scaleX(1); }

.header-actions { display: flex; align-items: center; gap: 16px; }
.header-phone { display: flex; align-items: center; gap: 8px; color: var(--text); font-weight: 600; font-size: 13px; }
.header-phone .icon { width: 15px; height: 15px; color: var(--cyan-soft); }

.menu-toggle {
	display: none;
	flex-direction: column;
	justify-content: center;
	gap: 4px;
	width: 40px;
	height: 40px;
	border: 1px solid var(--border-2);
	border-radius: 10px;
	background: rgba(11, 20, 32, 0.8);
	cursor: pointer;
}
.menu-toggle span {
	display: block;
	width: 18px;
	height: 2px;
	margin: 0 auto;
	background: var(--text-2);
	border-radius: 2px;
	transition: transform 0.28s var(--ease), opacity 0.28s var(--ease);
}
.menu-toggle.is-open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.menu-toggle.is-open span:nth-child(2) { opacity: 0; }
.menu-toggle.is-open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ---------- 区块通用 ---------- */
.section { position: relative; scroll-margin-top: calc(var(--header-h) + 20px); }
.section .container { position: relative; z-index: 2; }

.glow { position: absolute; border-radius: 50%; filter: blur(6px); pointer-events: none; z-index: 0; }
.glow-hero-a { top: -260px; right: -160px; width: 900px; height: 900px; background: radial-gradient(circle, rgba(18, 58, 107, 0.65), transparent 62%); animation: pulse 9s ease-in-out infinite; }
.glow-hero-b { top: -120px; left: -180px; width: 680px; height: 680px; background: radial-gradient(circle, rgba(11, 74, 85, 0.45), transparent 62%); animation: pulse 11s ease-in-out infinite reverse; }
.glow-services { top: -180px; right: -200px; width: 700px; height: 700px; background: radial-gradient(circle, rgba(18, 43, 85, 0.5), transparent 62%); animation: pulse 10s ease-in-out infinite; }
.glow-process { bottom: -180px; left: -200px; width: 600px; height: 600px; background: radial-gradient(circle, rgba(11, 63, 73, 0.4), transparent 62%); animation: pulse 12s ease-in-out infinite reverse; }
.glow-contact { top: -220px; left: 42%; width: 800px; height: 800px; background: radial-gradient(circle, rgba(14, 47, 94, 0.45), transparent 62%); animation: pulse 10s ease-in-out infinite; }
@keyframes pulse {
	0%, 100% { opacity: 0.75; transform: scale(1); }
	50% { opacity: 1; transform: scale(1.08); }
}

.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 40px; }
.section-head--stack { flex-direction: column; align-items: flex-start; gap: 16px; }
.section-head-left { display: flex; flex-direction: column; gap: 20px; }

.section-label { display: flex; align-items: center; gap: 12px; }
.label-no {
	display: inline-grid;
	place-items: center;
	min-width: 32px;
	height: 20px;
	padding: 0 8px;
	border: 1px solid var(--cyan);
	border-radius: 4px;
	background: rgba(18, 33, 47, 0.9);
	color: var(--cyan);
	font-size: 11px;
	font-weight: 700;
	letter-spacing: 0.5px;
}
.label-en { color: var(--text-2); font-size: 12px; font-weight: 600; letter-spacing: 2.4px; text-transform: uppercase; }

.section-title {
	font-size: clamp(28px, 3.2vw, 44px);
	font-weight: 800;
	line-height: 1.25;
	letter-spacing: -0.01em;
}
.section-desc { max-width: 400px; color: var(--text-2); font-size: 14px; line-height: 1.75; }

.accent-soft { color: var(--cyan-soft); }
.grad-text {
	background: var(--grad-soft);
	background-size: 220% 100%;
	-webkit-background-clip: text;
	background-clip: text;
	color: transparent;
	-webkit-text-fill-color: transparent;
	animation: gradShift 7s ease-in-out infinite;
}
@keyframes gradShift {
	0%, 100% { background-position: 0% 50%; }
	50% { background-position: 100% 50%; }
}

/* ---------- Hero ---------- */
.hero {
	padding-top: calc(var(--header-h) + 64px);
	padding-bottom: 56px;
	overflow: hidden;
}
.hero-row {
	display: grid;
	grid-template-columns: minmax(0, 1fr) 424px;
	gap: 72px;
	align-items: center;
}
.hero-copy { display: flex; flex-direction: column; gap: 28px; }

.hero-badge {
	display: inline-flex;
	align-items: center;
	gap: 10px;
	align-self: flex-start;
	max-width: 100%;
	padding: 7px 14px;
	border: 1px solid rgba(29, 61, 74, 0.9);
	border-radius: 999px;
	background: rgba(12, 26, 38, 0.7);
	color: #8fb6c4;
	font-size: 12px;
	font-weight: 500;
}
.dot { position: relative; width: 7px; height: 7px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 0 rgba(61, 231, 176, 0.6); animation: dotPulse 2s infinite; flex: none; }
@keyframes dotPulse {
	0% { box-shadow: 0 0 0 0 rgba(61, 231, 176, 0.55); }
	70% { box-shadow: 0 0 0 8px rgba(61, 231, 176, 0); }
	100% { box-shadow: 0 0 0 0 rgba(61, 231, 176, 0); }
}

.hero-title { font-size: clamp(34px, 4.5vw, 62px); font-weight: 800; line-height: 1.14; letter-spacing: -0.01em; }
.hero-sub { max-width: 540px; color: var(--text-2); font-size: 16px; line-height: 1.8; }

.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.hero-actions .btn { padding: 15px 26px; font-size: 15px; }

.hero-stats { display: flex; align-items: center; gap: 28px; margin-top: 8px; }
.stat { display: flex; flex-direction: column; gap: 4px; }
.stat-value { font-size: 34px; font-weight: 800; line-height: 1; letter-spacing: -0.5px; font-variant-numeric: tabular-nums; }
.stat-value .accent { font-size: 18px; font-style: normal; color: var(--cyan); margin-left: 2px; }
.stat-label { font-size: 12px; color: var(--text-3); }
.stat-sep { width: 1px; height: 42px; background: var(--border-2); flex: none; }

/* Hero 终端看板 */
.hero-visual {
	position: relative;
	padding: 22px;
	border: 1px solid #1b2e42;
	border-radius: var(--radius);
	background:
		radial-gradient(ellipse 120% 90% at 80% -10%, rgba(34, 225, 240, 0.12), transparent 55%),
		radial-gradient(ellipse 100% 80% at 0% 110%, rgba(61, 123, 255, 0.14), transparent 55%),
		rgba(10, 18, 32, 0.92);
	overflow: hidden;
	box-shadow: 0 30px 70px -40px rgba(0, 0, 0, 0.9);
}
.panel-scan {
	position: absolute;
	left: 0;
	right: 0;
	top: -30%;
	height: 30%;
	background: linear-gradient(to bottom, transparent, rgba(34, 225, 240, 0.08), transparent);
	animation: scan 6s linear infinite;
	pointer-events: none;
}
@keyframes scan {
	0% { top: -30%; }
	100% { top: 110%; }
}
.panel-head { display: flex; align-items: center; justify-content: space-between; }
.panel-title { color: #8fb6c4; font-size: 12px; font-weight: 600; letter-spacing: 1.4px; }
.live-badge {
	display: inline-flex;
	align-items: center;
	gap: 6px;
	padding: 3px 9px;
	border-radius: 6px;
	background: rgba(12, 43, 38, 0.9);
	color: var(--green);
	font-size: 10px;
	font-weight: 600;
	letter-spacing: 1px;
}
.live-badge .dot { width: 6px; height: 6px; }

.metrics { display: flex; flex-direction: column; gap: 14px; margin-top: 22px; }
.metric-top { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 7px; }
.metric-top span { color: var(--text-3); font-size: 11px; }
.metric-top b { color: var(--text); font-size: 12px; font-weight: 600; font-variant-numeric: tabular-nums; }
.track { height: 6px; border-radius: 999px; background: var(--border-3); overflow: hidden; }
.fill {
	display: block;
	height: 100%;
	width: 0;
	border-radius: 999px;
	background: var(--grad);
	box-shadow: 0 0 10px rgba(34, 225, 240, 0.55);
	transition: width 1.1s var(--ease);
}
.panel-sep { height: 1px; background: var(--border-2); margin: 20px 0; }
.module-list { display: flex; flex-direction: column; gap: 10px; }
.module {
	display: flex;
	align-items: center;
	gap: 12px;
	padding: 12px 14px;
	border: 1px solid #182a3c;
	border-radius: 10px;
	background: rgba(12, 22, 38, 0.85);
}
.module .icon { width: 18px; height: 18px; flex: none; }
.module .icon.ok { color: var(--green); }
.module .icon.spin { color: var(--cyan); animation: spin 1.3s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.module-name { font-size: 12px; font-weight: 600; color: var(--text); }
.module-sub { font-size: 10px; color: var(--text-3); }

/* 客户 logo 墙 */
.clients { display: flex; align-items: center; gap: 24px; margin-top: 72px; }
.clients-title { color: var(--text-3); font-size: 12px; letter-spacing: 1.6px; white-space: nowrap; }
.clients-line { flex: 1; height: 1px; background: var(--border-3); }
.clients-list { display: flex; align-items: center; gap: 34px; flex-wrap: wrap; }
.clients-list li { color: #3c4b60; font-size: 16px; font-weight: 700; letter-spacing: 0.4px; transition: color 0.3s var(--ease); }
.clients-list li:hover { color: var(--cyan-soft); }

/* ---------- SERVICES ---------- */
.services { padding: 100px 0; background: var(--bg-2); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); overflow: hidden; }
.services .section-head { margin-bottom: 48px; }

.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.service-card {
	position: relative;
	display: flex;
	flex-direction: column;
	padding: 26px;
	border: 1px solid var(--border-2);
	border-radius: var(--radius);
	background: var(--surface);
	overflow: hidden;
	transition: transform 0.3s var(--ease), border-color 0.3s var(--ease), box-shadow 0.3s var(--ease), background 0.3s var(--ease);
}
.service-card::before {
	content: "";
	position: absolute;
	inset: 0;
	background: radial-gradient(ellipse 70% 60% at 50% 0%, rgba(34, 225, 240, 0.12), transparent 70%);
	opacity: 0;
	transition: opacity 0.3s var(--ease);
	pointer-events: none;
}
.service-card:hover { transform: translateY(-6px); border-color: rgba(34, 225, 240, 0.55); box-shadow: 0 26px 50px -30px rgba(34, 225, 240, 0.5); }
.service-card:hover::before { opacity: 1; }
.service-card.is-featured { background: var(--surface-hi); border-color: var(--cyan); }

.service-top { display: flex; align-items: flex-start; justify-content: space-between; margin-bottom: 20px; }
.service-icon {
	display: grid;
	place-items: center;
	width: 48px;
	height: 48px;
	border: 1px solid #1c3145;
	border-radius: 12px;
	background: rgba(15, 29, 43, 0.9);
	color: var(--cyan-soft);
	transition: transform 0.3s var(--ease);
}
.service-card:hover .service-icon { transform: translateY(-2px) scale(1.05); }
.service-card.is-featured .service-icon { background: rgba(12, 47, 58, 0.9); border-color: rgba(34, 225, 240, 0.6); }
.service-icon .icon { width: 22px; height: 22px; }
.service-index { color: var(--text-3); font-size: 12px; font-weight: 700; letter-spacing: 1px; }
.service-name { font-size: 19px; font-weight: 600; margin-bottom: 10px; }
.service-text { color: var(--text-2); font-size: 13px; line-height: 1.75; flex: 1; }
.service-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.service-tags span {
	padding: 4px 10px;
	border: 1px solid var(--border);
	border-radius: 6px;
	background: rgba(10, 21, 32, 0.85);
	color: #7e93ad;
	font-size: 11px;
}

.services-foot {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 24px;
	margin-top: 24px;
	padding: 24px 28px;
	border: 1px solid #1c3244;
	border-radius: 14px;
	background: rgba(11, 22, 34, 0.85);
}
.services-foot-left { display: flex; align-items: center; gap: 16px; }
.foot-icon {
	display: grid;
	place-items: center;
	width: 46px;
	height: 46px;
	border-radius: 12px;
	border: 1px solid #1c3244;
	background: rgba(15, 29, 43, 0.9);
	color: var(--cyan-soft);
	flex: none;
}
.foot-icon .icon { width: 22px; height: 22px; }
.foot-title { font-size: 15px; font-weight: 600; }
.foot-sub { font-size: 13px; color: var(--text-3); }

/* ---------- PROCESS ---------- */
.process { padding: 96px 0; overflow: hidden; }
.process .section-head { margin-bottom: 44px; }
.process-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.process-card {
	padding: 24px;
	border: 1px solid var(--border);
	border-radius: var(--radius);
	background: rgba(10, 17, 25, 0.85);
	transition: transform 0.3s var(--ease), border-color 0.3s var(--ease), background 0.3s var(--ease);
}
.process-card:hover { transform: translateY(-5px); border-color: rgba(34, 225, 240, 0.4); background: rgba(12, 22, 34, 0.95); }
.process-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 26px; }
.step-icon { color: #5c7a93; }
.step-icon .icon { width: 22px; height: 22px; }
.step-no { font-size: 28px; font-weight: 800; letter-spacing: -0.5px; color: #1f3346; font-variant-numeric: tabular-nums; transition: color 0.3s var(--ease); }
.process-card:hover .step-no { color: rgba(34, 225, 240, 0.55); }
.step-name { font-size: 17px; font-weight: 600; margin-bottom: 10px; }
.step-text { color: var(--text-2); font-size: 13px; line-height: 1.75; }

/* ---------- CASES ---------- */
.cases { padding: 96px 0 100px; background: var(--bg-2); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.cases .section-head { margin-bottom: 40px; }
.link-arrow {
	display: inline-flex;
	align-items: center;
	gap: 8px;
	background: none;
	border: none;
	padding: 8px 0;
	color: var(--cyan);
	font-size: 14px;
	font-weight: 600;
	cursor: pointer;
	transition: gap 0.25s var(--ease), opacity 0.2s var(--ease);
}
.link-arrow .icon { width: 16px; height: 16px; }
.link-arrow:hover { gap: 12px; }

.case-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.case-card {
	border: 1px solid var(--border-2);
	border-radius: var(--radius);
	background: var(--surface);
	overflow: hidden;
	transition: transform 0.3s var(--ease), border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.case-card:hover { transform: translateY(-6px); border-color: rgba(34, 225, 240, 0.45); box-shadow: 0 30px 60px -34px rgba(34, 225, 240, 0.45); }
.case-media {
	position: relative;
	height: 196px;
	display: grid;
	place-items: center;
	overflow: hidden;
}
.case-media--energy { background: linear-gradient(140deg, #0a2a3c 0%, #0d3b55 45%, #0b1c33 100%); }
.case-media--commerce { background: linear-gradient(140deg, #1a1338 0%, #233a7a 45%, #0b1a33 100%); }
.case-media--office { background: linear-gradient(140deg, #0c2f2e 0%, #124a53 45%, #0a1c2c 100%); }
.case-media-grid {
	position: absolute;
	inset: 0;
	background-image:
		linear-gradient(to right, rgba(255, 255, 255, 0.06) 1px, transparent 1px),
		linear-gradient(to bottom, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
	background-size: 28px 28px;
	-webkit-mask-image: radial-gradient(circle at 50% 50%, #000, transparent 78%);
	mask-image: radial-gradient(circle at 50% 50%, #000, transparent 78%);
	transition: transform 0.5s var(--ease);
}
.case-card:hover .case-media-grid { transform: scale(1.12); }
.case-media-art { position: relative; width: 46%; max-width: 160px; height: auto; color: rgba(127, 216, 232, 0.85); filter: drop-shadow(0 6px 18px rgba(34, 225, 240, 0.35)); }
.case-body { padding: 22px; display: flex; flex-direction: column; gap: 12px; }
.case-tag {
	align-self: flex-start;
	padding: 4px 8px;
	border: 1px solid #1e4256;
	border-radius: 4px;
	background: rgba(11, 34, 48, 0.9);
	color: var(--cyan-soft);
	font-size: 11px;
	font-weight: 600;
}
.case-title { font-size: 18px; font-weight: 600; }
.case-meta { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.case-stat { color: var(--cyan); font-size: 14px; font-weight: 700; font-variant-numeric: tabular-nums; }
.case-note { color: var(--text-3); font-size: 12px; text-align: right; }

/* ---------- CONTACT ---------- */
.contact { padding: 96px 0; overflow: hidden; }
.contact .section-head--stack { margin-bottom: 40px; }
.contact-body { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 20px; }

.contact-info {
	padding: 32px;
	border: 1px solid var(--border);
	border-radius: var(--radius);
	background: rgba(8, 14, 24, 0.9);
}
.phone-block { display: flex; flex-direction: column; gap: 10px; }
.phone-label { display: flex; align-items: center; gap: 8px; color: var(--text-2); font-size: 12px; letter-spacing: 1px; }
.phone-label .icon { width: 16px; height: 16px; color: var(--cyan-soft); }
.tag-placeholder {
	padding: 2px 7px;
	border: 1px solid #2b3a4d;
	border-radius: 4px;
	background: #1a2230;
	color: #93a3b8;
	font-size: 10px;
	font-style: normal;
	letter-spacing: 0;
}
.phone-value { font-size: 32px; font-weight: 800; letter-spacing: 0.5px; font-variant-numeric: tabular-nums; color: var(--text); }
.phone-note { color: var(--text-3); font-size: 12px; }
.info-sep { height: 1px; background: var(--border); margin: 24px 0; }
.info-list { display: flex; flex-direction: column; gap: 14px; }
.info-item { display: flex; align-items: center; gap: 12px; }
.info-icon {
	display: grid;
	place-items: center;
	width: 32px;
	height: 32px;
	border-radius: 8px;
	background: rgba(13, 23, 37, 0.9);
	color: var(--cyan-soft);
	flex: none;
}
.info-icon .icon { width: 15px; height: 15px; }
.info-body { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.info-label { color: var(--text-3); font-size: 11px; }
.info-value { color: var(--text); font-size: 13px; font-weight: 500; word-break: break-word; }

.contact-qr {
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: 18px;
	padding: 28px;
	border: 1px solid var(--border);
	border-radius: var(--radius);
	background: rgba(8, 14, 24, 0.9);
	text-align: center;
}
.qr-label { display: flex; align-items: center; gap: 8px; color: var(--text-2); font-size: 12px; letter-spacing: 1px; }
.qr-label .icon { width: 16px; height: 16px; color: var(--cyan-soft); }
.qr-frame {
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	gap: 10px;
	width: 196px;
	height: 196px;
	border: 1px dashed #243449;
	border-radius: 10px;
	background: rgba(15, 24, 38, 0.9);
}
.qr-code { width: 64px; height: 64px; stroke: #3a4c63; fill: none; stroke-width: 1.4; }
.qr-caption { color: #7e93ad; font-size: 12px; font-weight: 600; }
.qr-hint { color: #54657c; font-size: 10px; }
.qr-note { color: var(--text-3); font-size: 12px; }
.wechat-row {
	display: flex;
	align-items: center;
	gap: 10px;
	width: 100%;
	padding: 10px 14px;
	border-radius: 8px;
	background: rgba(12, 22, 34, 0.9);
	text-align: left;
}
.wechat-row .icon { width: 14px; height: 14px; color: var(--cyan-soft); flex: none; }
.wechat-body { display: flex; flex-direction: column; gap: 1px; }
.wechat-label { color: var(--text-3); font-size: 10px; }
.wechat-value { color: var(--text); font-size: 12px; font-weight: 600; }

/* ---------- FOOTER ---------- */
.site-footer { padding: 48px 0 36px; background: var(--bg-3); border-top: 1px solid var(--border); }
.footer-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 48px; }
.footer-brand { display: flex; flex-direction: column; gap: 14px; max-width: 320px; }
.footer-logo { display: flex; align-items: center; gap: 10px; }
.footer-brand-cn { font-size: 15px; font-weight: 700; }
.footer-desc { color: var(--text-3); font-size: 12px; line-height: 1.8; }
.socials { display: flex; gap: 10px; }
.social {
	display: grid;
	place-items: center;
	width: 30px;
	height: 30px;
	border: 1px solid var(--border-2);
	border-radius: 8px;
	background: rgba(12, 20, 31, 0.9);
	color: #6b7d94;
	cursor: pointer;
	transition: color 0.25s var(--ease), border-color 0.25s var(--ease), transform 0.25s var(--ease);
}
.social .icon { width: 14px; height: 14px; }
.social:hover { color: var(--cyan); border-color: rgba(34, 225, 240, 0.5); transform: translateY(-2px); }

.footer-links { display: flex; gap: 72px; }
.link-col { display: flex; flex-direction: column; gap: 12px; }
.link-col-title { color: var(--text); font-size: 12px; font-weight: 600; letter-spacing: 0.7px; }
.footer-link { background: none; border: none; padding: 0; color: var(--text-3); font-size: 12px; text-align: left; cursor: pointer; transition: color 0.2s var(--ease); }
.footer-link:hover { color: var(--cyan-soft); }

.footer-sep { height: 1px; background: #101822; margin: 28px 0; }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; gap: 20px; color: var(--text-4); font-size: 11px; flex-wrap: wrap; }

/* ---------- 滚动进场 ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); will-change: opacity, transform; }
.reveal.is-visible { opacity: 1; transform: none; }
.service-grid .reveal:nth-child(2) { transition-delay: 0.06s; }
.service-grid .reveal:nth-child(3) { transition-delay: 0.12s; }
.service-grid .reveal:nth-child(4) { transition-delay: 0.06s; }
.service-grid .reveal:nth-child(5) { transition-delay: 0.12s; }
.service-grid .reveal:nth-child(6) { transition-delay: 0.18s; }
.process-row .reveal:nth-child(2) { transition-delay: 0.08s; }
.process-row .reveal:nth-child(3) { transition-delay: 0.16s; }
.process-row .reveal:nth-child(4) { transition-delay: 0.24s; }
.case-row .reveal:nth-child(2) { transition-delay: 0.1s; }
.case-row .reveal:nth-child(3) { transition-delay: 0.2s; }

/* ---------- 响应式 ---------- */
@media (max-width: 1180px) {
	.container { padding: 0 40px; }
	.hero-row { grid-template-columns: minmax(0, 1fr) 380px; gap: 44px; }
	.clients { flex-wrap: wrap; }
	.clients-line { min-width: 60px; }
}

@media (max-width: 980px) {
	.container { padding: 0 28px; }
	.brand-en { display: none; }

	.main-nav {
		position: fixed;
		top: var(--header-h);
		left: 0;
		right: 0;
		flex-direction: column;
		align-items: stretch;
		gap: 0;
		padding: 12px 28px 22px;
		background: rgba(5, 7, 13, 0.98);
		border-bottom: 1px solid var(--border);
		-webkit-backdrop-filter: blur(16px);
		backdrop-filter: blur(16px);
		transform: translateY(-140%);
		opacity: 0;
		pointer-events: none;
		transition: transform 0.35s var(--ease), opacity 0.3s var(--ease);
		z-index: 140;
	}
	.main-nav.is-open { transform: translateY(0); opacity: 1; pointer-events: auto; }
	.nav-link { padding: 14px 0; border-bottom: 1px solid var(--border); font-size: 15px; }
	.nav-link::after { display: none; }
	.nav-link.is-active { color: var(--cyan); }
	.menu-toggle { display: flex; }

	.hero-row { grid-template-columns: 1fr; gap: 40px; }
	.hero-visual { max-width: 460px; width: 100%; justify-self: start; }
	.hero-stats { gap: 20px; }
	.stat-value { font-size: 28px; }

	.section-head { flex-direction: column; align-items: flex-start; gap: 22px; }
	.section-desc { max-width: 620px; }

	.service-grid { grid-template-columns: repeat(2, 1fr); }
	.process-row { grid-template-columns: repeat(2, 1fr); }
	.case-row { grid-template-columns: repeat(2, 1fr); }
	.contact-body { grid-template-columns: 1fr; }
	.contact-qr { max-width: 420px; width: 100%; }
}

@media (max-width: 640px) {
	.container { padding: 0 18px; }
	.hero { padding-top: calc(var(--header-h) + 40px); }
	.hero-stats { flex-direction: column; align-items: flex-start; gap: 18px; }
	.stat-sep { display: none; }
	.hero-actions .btn { flex: 1 1 auto; }

	.services, .process, .cases, .contact { padding: 64px 0; }
	.service-grid, .process-row, .case-row { grid-template-columns: 1fr; }
	.service-grid .reveal, .process-row .reveal, .case-row .reveal { transition-delay: 0s; }

	.services-foot { flex-direction: column; align-items: stretch; }
	.services-foot .btn { justify-content: center; }
	.header-phone { display: none; }

	.footer-top { flex-direction: column; gap: 34px; }
	.footer-links { flex-wrap: wrap; gap: 36px; }
	.footer-bottom { flex-direction: column; align-items: flex-start; gap: 8px; }
	.clients-list { gap: 22px; }
	.case-meta { flex-direction: column; align-items: flex-start; gap: 6px; }
	.case-note { text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
	* { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
	.reveal { opacity: 1; transform: none; }
	.bg-grid, .bg-canvas, .bg-aurora { display: none; }
	.fill { transition: none; }
}