:root {
	--bg: #060910;
	--bg-soft: #0a0f1a;
	--surface: rgba(255, 255, 255, 0.028);
	--surface-hover: rgba(255, 255, 255, 0.055);
	--line: rgba(130, 175, 235, 0.16);
	--line-strong: rgba(130, 175, 235, 0.3);
	--text: #e7eef9;
	--text-dim: #a7b6cc;
	--muted: #7f91ab;
	--cyan: #22d3ee;
	--blue: #3b82f6;
	--violet: #a78bfa;
	--radius: 18px;
	--ease: cubic-bezier(0.22, 0.61, 0.36, 1);
	--wrap: 1180px;
}

* {
	box-sizing: border-box;
	margin: 0;
	padding: 0;
}

html {
	scroll-behavior: smooth;
	-webkit-text-size-adjust: 100%;
}

body {
	background: var(--bg);
	color: var(--text);
	font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC',
		'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
	font-size: 16px;
	line-height: 1.7;
	letter-spacing: 0.01em;
	-webkit-font-smoothing: antialiased;
	overflow-x: hidden;
}

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

h1, h2, h3 {
	font-weight: 600;
	letter-spacing: -0.02em;
	line-height: 1.22;
}

/* ============ 背景层 ============ */
.bg-grid {
	position: fixed;
	inset: 0;
	z-index: -2;
	background-image:
		linear-gradient(to right, rgba(130, 175, 235, 0.055) 1px, transparent 1px),
		linear-gradient(to bottom, rgba(130, 175, 235, 0.055) 1px, transparent 1px);
	background-size: 64px 64px;
	-webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 30%, transparent 78%);
	mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 30%, transparent 78%);
	animation: gridDrift 26s linear infinite;
}

@keyframes gridDrift {
	to {
		background-position: 64px 64px, 64px 64px;
	}
}

/* 星点层：缓慢平移 + 明暗呼吸 */
.bg-stars {
	position: fixed;
	inset: -20%;
	z-index: -1;
	pointer-events: none;
	background-image:
		radial-gradient(1.3px 1.3px at 40px 60px, rgba(160, 225, 255, 0.55) 50%, transparent 51%),
		radial-gradient(1.1px 1.1px at 190px 130px, rgba(120, 190, 255, 0.42) 50%, transparent 51%),
		radial-gradient(1.5px 1.5px at 280px 250px, rgba(190, 240, 255, 0.4) 50%, transparent 51%),
		radial-gradient(1px 1px at 120px 300px, rgba(150, 210, 255, 0.3) 50%, transparent 51%),
		radial-gradient(1.2px 1.2px at 250px 80px, rgba(167, 139, 250, 0.3) 50%, transparent 51%);
	background-size: 340px 340px;
	animation: starDrift 90s linear infinite, starPulse 9s ease-in-out infinite alternate;
}

@keyframes starDrift {
	to {
		transform: translate3d(-340px, -340px, 0);
	}
}

@keyframes starPulse {
	from {
		opacity: 0.35;
	}
	to {
		opacity: 0.85;
	}
}

.bg-glow {
	position: fixed;
	inset: 0;
	z-index: -1;
	pointer-events: none;
	background:
		radial-gradient(720px 460px at 78% -6%, rgba(34, 211, 238, 0.14), transparent 62%),
		radial-gradient(620px 420px at 12% 4%, rgba(59, 130, 246, 0.12), transparent 60%),
		radial-gradient(900px 620px at 50% 108%, rgba(167, 139, 250, 0.08), transparent 65%);
	animation: glowDrift 24s ease-in-out infinite alternate;
}

@keyframes glowDrift {
	0% {
		transform: translate3d(0, 0, 0) scale(1);
		opacity: 0.85;
	}
	50% {
		transform: translate3d(-2.5%, 1.8%, 0) scale(1.05);
		opacity: 1;
	}
	100% {
		transform: translate3d(2%, -1.2%, 0) scale(1.02);
		opacity: 0.9;
	}
}

/* ============ 布局 ============ */
.wrap {
	width: 100%;
	max-width: var(--wrap);
	margin: 0 auto;
	padding: 0 28px;
}

.section {
	position: relative;
	padding: clamp(84px, 11vw, 140px) 0;
	isolation: isolate;
}

/* 各区块背景色调（叠加在全局背景之上，避免整页一片纯黑） */
.section::before {
	content: '';
	position: absolute;
	inset: 0;
	z-index: -1;
	pointer-events: none;
}

#business::before {
	background:
		radial-gradient(900px 520px at 10% 6%, rgba(34, 211, 238, 0.16), transparent 62%),
		radial-gradient(780px 480px at 94% 96%, rgba(59, 130, 246, 0.16), transparent 64%),
		linear-gradient(180deg, rgba(13, 24, 42, 0.72), rgba(8, 14, 26, 0.58));
}

#capability::before {
	background:
		radial-gradient(880px 520px at 78% 4%, rgba(59, 130, 246, 0.18), transparent 62%),
		radial-gradient(720px 460px at 4% 94%, rgba(34, 211, 238, 0.12), transparent 60%),
		linear-gradient(180deg, rgba(15, 28, 50, 0.75), rgba(8, 13, 24, 0.6));
	border-top: 1px solid var(--line);
	border-bottom: 1px solid var(--line);
}

#process::before {
	background:
		radial-gradient(820px 460px at 50% 106%, rgba(34, 211, 238, 0.18), transparent 64%),
		radial-gradient(620px 380px at 88% 6%, rgba(167, 139, 250, 0.14), transparent 60%),
		linear-gradient(180deg, rgba(10, 17, 31, 0.55), rgba(13, 21, 38, 0.68));
}

#about::before {
	background:
		radial-gradient(860px 520px at 6% 8%, rgba(167, 139, 250, 0.16), transparent 62%),
		radial-gradient(760px 460px at 94% 92%, rgba(34, 211, 238, 0.12), transparent 62%),
		linear-gradient(180deg, rgba(17, 22, 44, 0.72), rgba(8, 11, 22, 0.6));
	border-top: 1px solid var(--line);
	border-bottom: 1px solid var(--line);
}

.contact::before {
	background:
		radial-gradient(760px 460px at 50% 116%, rgba(34, 211, 238, 0.3), transparent 66%),
		radial-gradient(680px 420px at 10% 0%, rgba(59, 130, 246, 0.2), transparent 62%),
		linear-gradient(180deg, rgba(13, 24, 42, 0.8), rgba(9, 15, 28, 0.66));
	border-top: 1px solid var(--line);
}

/* ============ 导航 ============ */
.nav {
	position: fixed;
	top: 0;
	left: 0;
	right: 0;
	z-index: 100;
	transition: background 0.35s var(--ease), border-color 0.35s var(--ease), backdrop-filter 0.35s;
	border-bottom: 1px solid transparent;
}

.nav.is-scrolled {
	background: rgba(6, 9, 16, 0.72);
	backdrop-filter: blur(18px) saturate(1.4);
	-webkit-backdrop-filter: blur(18px) saturate(1.4);
	border-bottom-color: var(--line);
}

.nav-inner {
	display: flex;
	align-items: center;
	gap: 34px;
	height: 72px;
}

.brand {
	display: flex;
	align-items: center;
	gap: 11px;
	margin-right: auto;
}

.brand-mark {
	display: grid;
	place-items: center;
	width: 38px;
	height: 38px;
	border-radius: 11px;
	color: var(--cyan);
	background: linear-gradient(145deg, rgba(34, 211, 238, 0.16), rgba(59, 130, 246, 0.06));
	border: 1px solid var(--line-strong);
	box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.brand-text {
	display: flex;
	flex-direction: column;
	line-height: 1.15;
}

.brand-text b {
	font-size: 15px;
	letter-spacing: 0.14em;
	font-weight: 600;
}

.brand-text i {
	font-style: normal;
	font-size: 11px;
	letter-spacing: 0.28em;
	color: var(--muted);
}

.nav-links {
	display: flex;
	gap: 28px;
	font-size: 14px;
	color: var(--text-dim);
}

.nav-links a {
	position: relative;
	padding: 4px 0;
	transition: color 0.25s;
}

.nav-links a::after {
	content: '';
	position: absolute;
	left: 0;
	bottom: -2px;
	width: 0;
	height: 1px;
	background: linear-gradient(90deg, var(--cyan), var(--blue));
	transition: width 0.3s var(--ease);
}

.nav-links a:hover {
	color: var(--text);
}

.nav-links a:hover::after {
	width: 100%;
}

.lang-toggle {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-width: 46px;
	height: 32px;
	padding: 0 12px;
	border-radius: 999px;
	border: 1px solid var(--line-strong);
	background: var(--surface);
	color: var(--text-dim);
	font-family: inherit;
	font-size: 12px;
	letter-spacing: 0.1em;
	cursor: pointer;
	transition: color 0.25s, border-color 0.25s, background 0.25s;
}

.lang-toggle:hover {
	color: var(--text);
	border-color: rgba(34, 211, 238, 0.45);
	background: var(--surface-hover);
}

.lang-toggle:focus-visible {
	outline: 2px solid rgba(34, 211, 238, 0.5);
	outline-offset: 2px;
}

.nav-toggle {
	display: none;
	flex-direction: column;
	justify-content: center;
	gap: 5px;
	width: 40px;
	height: 40px;
	padding: 0 9px;
	background: transparent;
	border: 1px solid var(--line);
	border-radius: 10px;
	cursor: pointer;
}

.nav-toggle span {
	display: block;
	height: 1.5px;
	background: var(--text-dim);
	border-radius: 2px;
	transition: transform 0.3s var(--ease), opacity 0.3s;
}

/* ============ 按钮 ============ */
.btn {
	display: inline-flex;
	align-items: center;
	gap: 8px;
	padding: 13px 26px;
	border-radius: 999px;
	font-size: 14.5px;
	font-weight: 500;
	letter-spacing: 0.02em;
	transition: transform 0.25s var(--ease), box-shadow 0.3s var(--ease), background 0.3s, border-color 0.3s;
	white-space: nowrap;
}

.btn-primary {
	color: #04121c;
	background: linear-gradient(135deg, var(--cyan), #4fb2ff 55%, var(--blue));
	box-shadow: 0 8px 26px -10px rgba(34, 211, 238, 0.6);
}

.btn-primary:hover {
	transform: translateY(-2px);
	box-shadow: 0 16px 38px -12px rgba(34, 211, 238, 0.72);
}

.btn-ghost {
	color: var(--text);
	border: 1px solid var(--line-strong);
	background: var(--surface);
}

.btn-ghost:hover {
	background: var(--surface-hover);
	border-color: rgba(34, 211, 238, 0.45);
	transform: translateY(-2px);
}

/* ============ HERO ============ */
.hero {
	position: relative;
	display: flex;
	align-items: center;
	justify-content: center;
	min-height: 100svh;
	padding: 150px 0 90px;
	overflow: hidden;
	isolation: isolate;
}

/* 动态背景：流动光晕 */
.hero-aura {
	position: absolute;
	inset: -12% -8%;
	z-index: 0;
	overflow: hidden;
	pointer-events: none;
	filter: blur(0px);
}

.hero-aura span {
	position: absolute;
	display: block;
	border-radius: 50%;
	opacity: 0.5;
	will-change: transform;
}

.aura-1 {
	width: 46vw;
	height: 46vw;
	left: 4%;
	top: -8%;
	background: radial-gradient(circle, rgba(34, 211, 238, 0.4), rgba(34, 211, 238, 0) 68%);
	animation: auraFloatA 18s ease-in-out infinite alternate;
}

.aura-2 {
	width: 52vw;
	height: 52vw;
	right: -4%;
	top: 6%;
	background: radial-gradient(circle, rgba(59, 130, 246, 0.36), rgba(59, 130, 246, 0) 70%);
	animation: auraFloatB 22s ease-in-out infinite alternate;
}

.aura-3 {
	width: 60vw;
	height: 60vw;
	left: 50%;
	bottom: -34%;
	background: radial-gradient(circle, rgba(167, 139, 250, 0.32), rgba(167, 139, 250, 0) 70%);
	animation: auraFloatC 26s ease-in-out infinite alternate;
}

@keyframes auraFloatA {
	0% { transform: translate3d(0, 0, 0) scale(1); }
	50% { transform: translate3d(9vw, 7vh, 0) scale(1.18); }
	100% { transform: translate3d(4vw, -6vh, 0) scale(0.94); }
}

@keyframes auraFloatB {
	0% { transform: translate3d(0, 0, 0) scale(1.05); }
	50% { transform: translate3d(-8vw, 10vh, 0) scale(0.9); }
	100% { transform: translate3d(-3vw, -5vh, 0) scale(1.15); }
}

@keyframes auraFloatC {
	0% { transform: translate3d(-50%, 0, 0) scale(0.95); }
	50% { transform: translate3d(-46%, -8vh, 0) scale(1.12); }
	100% { transform: translate3d(-54%, 3vh, 0) scale(1); }
}

/* 动态背景：粒子网络 */
.hero-canvas {
	position: absolute;
	inset: 0;
	z-index: 1;
	width: 100%;
	height: 100%;
	pointer-events: none;
	opacity: 0.72;
	-webkit-mask-image: radial-gradient(ellipse 82% 76% at 50% 45%, #000 36%, transparent 88%);
	mask-image: radial-gradient(ellipse 82% 76% at 50% 45%, #000 36%, transparent 88%);
}

.hero-inner {
	position: relative;
	z-index: 2;
	max-width: 900px;
	margin: 0 auto;
	padding: 0 28px;
	width: 100%;
	text-align: center;
}

.eyebrow {
	font-size: 12px;
	letter-spacing: 0.32em;
	color: var(--cyan);
	text-transform: uppercase;
	margin-bottom: 20px;
	font-weight: 500;
}

.hero h1 {
	font-size: clamp(38px, 5.4vw, 68px);
	margin-bottom: 26px;
}

.grad {
	background: linear-gradient(100deg, var(--cyan), #6cc8ff 45%, var(--violet));
	-webkit-background-clip: text;
	background-clip: text;
	color: transparent;
}

.grad-gray {
	background: linear-gradient(100deg, #d3dae6, #6fd6e6);
	-webkit-background-clip: text;
	background-clip: text;
	color: transparent;
}

.lede {
	font-size: clamp(15px, 1.25vw, 17.5px);
	color: var(--text-dim);
	max-width: 620px;
	margin: 0 auto 36px;
}

.hero-actions {
	display: flex;
	align-items: center;
	justify-content: center;
	gap: 18px;
	flex-wrap: wrap;
	margin-bottom: 58px;
}

.hero-metrics {
	display: flex;
	justify-content: center;
	gap: 46px;
	max-width: 660px;
	margin: 0 auto;
	list-style: none;
	flex-wrap: wrap;
	padding-top: 26px;
	border-top: 1px solid var(--line);
}

.hero-metrics li {
	display: flex;
	flex-direction: column;
	gap: 3px;
}

.hero-metrics b {
	font-size: 20px;
	font-weight: 600;
	letter-spacing: 0.01em;
	background: linear-gradient(120deg, #fff, var(--cyan));
	-webkit-background-clip: text;
	background-clip: text;
	color: transparent;
}

.hero-metrics span {
	font-size: 12.5px;
	color: var(--muted);
	letter-spacing: 0.04em;
}

.hero-visual {
	position: absolute;
	top: 50%;
	left: 50%;
	right: auto;
	transform: translate(-50%, -50%);
	width: min(720px, 76vw);
	opacity: 0.32;
	z-index: 1;
	pointer-events: none;
	-webkit-mask-image: radial-gradient(circle at 50% 50%, #000 32%, transparent 72%);
	mask-image: radial-gradient(circle at 50% 50%, #000 32%, transparent 72%);
}

.orbit {
	width: 100%;
	height: auto;
	overflow: visible;
}

.ring {
	transform-origin: 260px 260px;
}

.ring-2 {
	animation: spin 34s linear infinite;
}

.ring-3 {
	animation: spin 26s linear infinite reverse;
}

.sat {
	animation: pulse 3.6s ease-in-out infinite;
}

.sat:nth-of-type(2) {
	animation-delay: 1.2s;
}

@keyframes spin {
	to { transform: rotate(360deg); }
}

@keyframes pulse {
	0%, 100% { opacity: 0.4; }
	50% { opacity: 1; }
}

/* ============ 段落标题 ============ */
.section-head {
	max-width: 680px;
	margin-bottom: 56px;
}

.section-head h2 {
	font-size: clamp(27px, 3.3vw, 40px);
	margin-bottom: 16px;
}

.section-head .sub {
	color: var(--text-dim);
	font-size: 15.5px;
}

/* ============ 业务卡片 ============ */
.cards {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 22px;
}

.card {
	position: relative;
	padding: 34px 30px 30px;
	border-radius: var(--radius);
	border: 1px solid var(--line);
	background: linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.012));
	transition: transform 0.4s var(--ease), border-color 0.4s, background 0.4s;
	overflow: hidden;
}

.card::before {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	height: 1px;
	background: linear-gradient(90deg, transparent, rgba(34, 211, 238, 0.55), transparent);
	opacity: 0;
	transition: opacity 0.4s;
}

.card:hover {
	transform: translateY(-6px);
	border-color: rgba(34, 211, 238, 0.34);
	background: linear-gradient(180deg, rgba(255, 255, 255, 0.062), rgba(255, 255, 255, 0.016));
}

.card:hover::before {
	opacity: 1;
}

.card-icon {
	display: grid;
	place-items: center;
	width: 46px;
	height: 46px;
	margin-bottom: 24px;
	border-radius: 13px;
	color: var(--cyan);
	background: linear-gradient(145deg, rgba(34, 211, 238, 0.14), rgba(59, 130, 246, 0.05));
	border: 1px solid var(--line-strong);
}

.card h3 {
	font-size: 19.5px;
	margin-bottom: 12px;
}

.card p {
	font-size: 14.5px;
	color: var(--text-dim);
	margin-bottom: 22px;
}

.tags {
	list-style: none;
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
}

.tags li {
	font-size: 12.5px;
	color: var(--muted);
	padding: 5px 11px;
	border-radius: 999px;
	border: 1px solid var(--line);
	background: rgba(255, 255, 255, 0.02);
	transition: color 0.3s, border-color 0.3s;
}

.card:hover .tags li {
	color: var(--text-dim);
	border-color: rgba(130, 175, 235, 0.26);
}

/* ============ 能力网格 ============ */
.grid-2 {
	display: grid;
	grid-template-columns: repeat(2, 1fr);
	gap: 1px;
	background: var(--line);
	border: 1px solid var(--line);
	border-radius: var(--radius);
	overflow: hidden;
}

.cap-item {
	display: flex;
	gap: 20px;
	padding: 34px 32px;
	background: linear-gradient(180deg, rgba(18, 30, 52, 0.55), rgba(11, 18, 32, 0.42));
	transition: background 0.35s;
}

.cap-item:hover {
	background: rgba(24, 40, 68, 0.62);
}

.cap-no {
	font-family: ui-monospace, 'SFMono-Regular', Menlo, monospace;
	font-size: 12px;
	color: var(--cyan);
	letter-spacing: 0.1em;
	padding-top: 4px;
	opacity: 0.9;
}

.cap-item h3 {
	font-size: 16.5px;
	margin-bottom: 8px;
}

.cap-item p {
	font-size: 14px;
	color: var(--text-dim);
}

/* ============ 流程 ============ */
.steps {
	display: grid;
	grid-template-columns: repeat(4, 1fr);
	gap: 22px;
	counter-reset: step;
}

.step {
	position: relative;
	padding: 30px 26px;
	border-radius: var(--radius);
	border: 1px solid var(--line);
	background: linear-gradient(180deg, rgba(34, 211, 238, 0.055), rgba(255, 255, 255, 0.012));
	transition: border-color 0.35s, background 0.35s;
}

.step:hover {
	border-color: var(--line-strong);
	background: rgba(255, 255, 255, 0.04);
}

.step-idx {
	display: block;
	font-family: ui-monospace, 'SFMono-Regular', Menlo, monospace;
	font-size: 12px;
	color: var(--muted);
	letter-spacing: 0.12em;
	margin-bottom: 16px;
}

.step h3 {
	font-size: 16px;
	margin-bottom: 8px;
}

.step p {
	font-size: 13.5px;
	color: var(--text-dim);
}

/* ============ 关于 ============ */
.about {
	display: grid;
	grid-template-columns: 1.25fr 1fr;
	gap: 64px;
	align-items: start;
}

.about-text h2 {
	font-size: clamp(27px, 3.3vw, 40px);
	margin-bottom: 24px;
}

.about-text p {
	color: var(--text-dim);
	font-size: 15px;
	margin-bottom: 18px;
}

.about-visual {
	position: relative;
	width: min(100%, 460px);
	margin: 0 auto;
	aspect-ratio: 1 / 1;
	perspective: 900px;
}

.av-glow {
	position: absolute;
	inset: 5%;
	border-radius: 50%;
	background: radial-gradient(
		circle at var(--mx, 50%) var(--my, 50%),
		rgba(34, 211, 238, 0.26),
		rgba(167, 139, 250, 0.14) 38%,
		transparent 70%
	);
	opacity: 0;
	transition: opacity 0.35s ease;
	pointer-events: none;
}

.about-svg {
	display: block;
	width: 100%;
	height: 100%;
	position: relative;
	z-index: 1;
	transform: rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg)) scale(1);
	transform-style: preserve-3d;
	transition: transform 0.2s ease-out;
	will-change: transform;
}

.about-visual.is-active .about-svg {
	transform: rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg)) scale(1.04);
}

.about-visual.is-active .av-glow {
	opacity: 1;
}

.about-visual.is-active .av-link {
	animation-duration: 1.5s;
}

.about-visual.is-active .av-ring {
	animation-duration: 12s;
}

.about-visual.is-active .av-ring-dashed {
	animation-duration: 18s;
}

.about-visual.is-active .av-node {
	animation-duration: 1.6s;
}

.about-visual.is-active .av-label {
	color: #eaf6ff;
	border-color: rgba(34, 211, 238, 0.55);
	box-shadow: 0 0 16px rgba(34, 211, 238, 0.22);
}

.av-halo {
	opacity: 0.16;
}

.av-ring {
	fill: none;
	stroke: rgba(34, 211, 238, 0.3);
	stroke-width: 1;
	stroke-dasharray: 2 10;
	transform-box: fill-box;
	transform-origin: center;
	animation: avSpin 26s linear infinite;
}

.av-ring-dashed {
	stroke: rgba(167, 139, 250, 0.28);
	stroke-dasharray: 4 14;
	animation-duration: 38s;
	animation-direction: reverse;
}

.av-link {
	stroke: url(#av-line);
	stroke-width: 1.3;
	stroke-dasharray: 7 12;
	animation: avFlow 3.2s linear infinite;
}

.av-link-ai {
	stroke-width: 1.6;
	opacity: 0.85;
}

.av-core {
	fill: #22d3ee;
	animation: avPulse 2.6s ease-in-out infinite;
}

.av-node {
	animation: avPulse 3.4s ease-in-out infinite;
}

.av-node-ai {
	fill: #22d3ee;
	animation-delay: 0s;
}

.av-node-chain {
	fill: #3b82f6;
	animation-delay: 1.1s;
}

.av-node-energy {
	fill: #a78bfa;
	animation-delay: 2.2s;
}

.av-label {
	position: absolute;
	transform: translate(-50%, -50%);
	padding: 4px 11px;
	border-radius: 999px;
	border: 1px solid var(--line);
	background: rgba(10, 16, 30, 0.7);
	font-size: 12px;
	letter-spacing: 0.08em;
	white-space: nowrap;
	color: var(--text-dim);
	z-index: 2;
	transition: color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.av-label-ai {
	left: 50%;
	top: 13%;
	color: #7fe7f7;
	border-color: rgba(34, 211, 238, 0.35);
}

.av-label-chain {
	left: 21%;
	top: 89%;
	color: #9dc2ff;
	border-color: rgba(59, 130, 246, 0.35);
}

.av-label-energy {
	left: 79%;
	top: 89%;
	color: #c6b8ff;
	border-color: rgba(167, 139, 250, 0.35);
}

@keyframes avSpin {
	to { transform: rotate(360deg); }
}

@keyframes avFlow {
	to { stroke-dashoffset: -38; }
}

@keyframes avPulse {
	0%, 100% { opacity: 0.55; }
	50% { opacity: 1; }
}

/* ============ 联系 ============ */
.contact {
	padding-bottom: clamp(80px, 10vw, 120px);
}

.contact-inner {
	text-align: center;
	max-width: 720px;
}

.contact-inner .eyebrow {
	margin-bottom: 16px;
}

.contact-inner h2 {
	font-size: clamp(30px, 4vw, 46px);
	margin-bottom: 16px;
}

.contact-inner .sub {
	color: var(--text-dim);
	font-size: 15.5px;
	margin-bottom: 38px;
}

.contact-actions {
	display: flex;
	justify-content: center;
	gap: 16px;
	flex-wrap: wrap;
}

/* ============ 页脚 ============ */
.footer {
	border-top: 1px solid var(--line);
	padding: 44px 0 52px;
	background: linear-gradient(180deg, rgba(13, 22, 40, 0.9), rgba(6, 10, 18, 0.75));
}

.footer-inner {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 14px 28px;
	justify-content: space-between;
}

.footer-brand {
	display: flex;
	align-items: baseline;
	gap: 12px;
}

.footer-brand b {
	font-size: 14px;
	letter-spacing: 0.14em;
}

.footer-brand span {
	font-size: 12px;
	color: var(--muted);
	letter-spacing: 0.2em;
}

.footer-note {
	font-size: 13px;
	color: var(--muted);
}

.footer-copy {
	font-size: 12.5px;
	color: var(--muted);
	opacity: 0.8;
}

/* ============ 动效 ============ */
.reveal {
	opacity: 0;
	transform: translateY(22px);
	transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}

.reveal.is-in {
	opacity: 1;
	transform: none;
}

/* ============ 响应式 ============ */
@media (max-width: 1080px) {
	.nav-inner { gap: 22px; }
	.cards { grid-template-columns: repeat(2, 1fr); }
	.steps { grid-template-columns: repeat(2, 1fr); }
	.hero-visual { width: 68vw; opacity: 0.24; }
}

@media (max-width: 820px) {
	.nav-links { display: none; }
	.nav-toggle { display: flex; }
	.nav-links.is-open {
		display: flex;
		position: absolute;
		top: 72px;
		left: 0;
		right: 0;
		flex-direction: column;
		gap: 0;
		padding: 6px 22px 16px;
		background: rgba(6, 9, 16, 0.96);
		backdrop-filter: blur(18px);
		-webkit-backdrop-filter: blur(18px);
		border-bottom: 1px solid var(--line);
	}
	.nav-links.is-open a {
		padding: 14px 0;
		border-bottom: 1px solid var(--line);
	}
	.hero { min-height: auto; padding-top: 128px; }
	.hero-visual { display: none; }
	.grid-2 { grid-template-columns: 1fr; }
	.about { grid-template-columns: 1fr; gap: 40px; }
	.section-head { margin-bottom: 40px; }
}

@media (max-width: 620px) {
	.wrap { padding: 0 22px; }
	.hero-inner { padding-left: 22px; padding-right: 22px; }
	.hero-metrics { gap: 26px; }
	.cards,
	.steps { grid-template-columns: 1fr; }
	.card { padding: 28px 24px 26px; }
	.cap-item { padding: 28px 24px; }
	.footer-inner { flex-direction: column; align-items: flex-start; }
	.footer-note { order: 3; }
}

@media (prefers-reduced-motion: reduce) {
	html { scroll-behavior: auto; }
	*, *::before, *::after {
		animation-duration: 0.001ms !important;
		animation-iteration-count: 1 !important;
		transition-duration: 0.001ms !important;
	}
	.reveal { opacity: 1; transform: none; }
}