:root {
	--primary: #2563eb;
	--primary-dark: #1d4ed8;
	--accent: #06b6d4;
	--bg: #f6f9fe;
	--surface: #ffffff;
	--surface-2: #eef4fd;
	--text: #334155;
	--heading: #0f172a;
	--muted: #64748b;
	--border: #e2e8f0;
	--radius: 22px;
	--maxw: 1200px;
	--shadow: 0 30px 60px -42px rgba(15,23,42,0.42);
	--font-head: "Segoe UI", "Microsoft YaHei", system-ui, sans-serif;
	--font-body: "Segoe UI", "Microsoft YaHei", system-ui, sans-serif;
	--hero-grad: linear-gradient(135deg, #1d4ed8 0%, #06b6d4 100%);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
	margin: 0;
	background: var(--bg);
	color: var(--text);
	font-family: var(--font-body);
	font-size: 16px;
	line-height: 1.75;
	-webkit-font-smoothing: antialiased;
	overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--accent); }
h1, h2, h3, h4 {
	font-family: var(--font-head);
	color: var(--heading);
	line-height: 1.25;
	margin: 0 0 14px;
	letter-spacing: -0.01em;
}
h1 { font-size: clamp(2rem, 4.4vw, 3.4rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); }
h3 { font-size: 1.18rem; }
p { margin: 0 0 16px; }
ul { margin: 0; padding: 0; list-style: none; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.site-main { display: block; }
.eyebrow {
	display: inline-block;
	margin: 0 0 12px;
	padding: 5px 12px;
	border-radius: 999px;
	background: color-mix(in srgb, var(--primary) 12%, transparent);
	color: var(--primary);
	font-size: 13px;
	font-weight: 700;
	letter-spacing: 0.06em;
}
.section-head { max-width: 720px; margin: 0 auto 42px; text-align: center; }
.section-head.left { margin-left: 0; text-align: left; }
.section-sub { color: var(--muted); }

.btn {
	display: inline-flex;
	align-items: center;
	gap: 8px;
	padding: 13px 24px;
	border-radius: calc(var(--radius) * 0.7);
	font-weight: 700;
	font-size: 15px;
	line-height: 1;
	border: 1px solid transparent;
	cursor: pointer;
	transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}
.btn svg { width: 17px; height: 17px; }
.btn-primary {
	background: linear-gradient(135deg, var(--primary), var(--accent));
	color: #fff;
	box-shadow: 0 12px 26px -12px color-mix(in srgb, var(--primary) 75%, transparent);
}
.btn-primary:hover { color: #fff; transform: translateY(-2px); }
.btn-ghost {
	background: transparent;
	border-color: var(--border);
	color: var(--text);
}
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); }
.btn-sm { padding: 10px 18px; font-size: 14px; }

.scroll-progress { position: fixed; top: 0; left: 0; right: 0; height: 3px; z-index: 90; background: transparent; }
.scroll-progress i { display: block; height: 100%; transform: scaleX(0); transform-origin: 0 50%; background: linear-gradient(90deg, var(--primary), var(--accent)); }

.site-header {
	position: sticky;
	top: 0;
	z-index: 80;
	background: color-mix(in srgb, var(--bg) 88%, transparent);
	backdrop-filter: blur(14px);
	border-bottom: 1px solid transparent;
	transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.site-header.is-scrolled { border-color: var(--border); box-shadow: 0 10px 30px -24px rgba(0,0,0,0.5); }
.header-inner { display: flex; align-items: center; gap: 22px; min-height: 72px; }
.brand { display: inline-flex; align-items: center; gap: 11px; color: var(--heading); }
.brand-mark {
	display: grid;
	place-items: center;
	width: 40px;
	height: 40px;
	border-radius: calc(var(--radius) * 0.6);
	background: linear-gradient(135deg, var(--primary), var(--accent));
	color: #fff;
	font-weight: 800;
	font-size: 15px;
	letter-spacing: 0.02em;
	box-shadow: 0 10px 22px -12px color-mix(in srgb, var(--primary) 80%, transparent);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-text b { font-family: var(--font-head); font-size: 17px; }
.brand-text small { color: var(--muted); font-size: 12px; }
.nav { display: flex; align-items: center; gap: 24px; margin-left: auto; }
.nav a { color: var(--text); font-size: 15px; font-weight: 600; opacity: 0.86; }
.nav a:hover { color: var(--primary); opacity: 1; }
.header-actions { display: flex; align-items: center; gap: 12px; }
.nav-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--border); background: transparent; border-radius: 10px; padding: 11px; cursor: pointer; }
.nav-toggle span { display: block; height: 2px; background: var(--text); margin: 4px 0; border-radius: 2px; }

.hero { position: relative; padding: 84px 0 72px; overflow: hidden; }
.hero-inner { position: relative; display: grid; grid-template-columns: 1.02fr 0.98fr; gap: 56px; align-items: center; }
.hero-copy h1 { margin-bottom: 18px; }
.hero-sub { font-size: 1.12rem; color: var(--muted); max-width: 620px; }
.hero-intro { color: var(--muted); font-size: 15px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin: 26px 0 22px; }
.hero-badges { display: flex; flex-wrap: wrap; gap: 8px; }
.hero-badges li {
	padding: 6px 12px;
	border: 1px solid var(--border);
	border-radius: 999px;
	font-size: 12.5px;
	color: var(--muted);
	background: color-mix(in srgb, var(--surface) 70%, transparent);
}
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.hero-visual { position: relative; }
.mock-window {
	border-radius: calc(var(--radius) * 1.1);
	border: 1px solid var(--border);
	background: var(--surface);
	box-shadow: var(--shadow);
	overflow: hidden;
}
.mock-bar { display: flex; align-items: center; gap: 7px; padding: 11px 14px; border-bottom: 1px solid var(--border); }
.mock-bar span { width: 10px; height: 10px; border-radius: 50%; background: var(--border); }
.mock-bar span:first-child { background: #ff6b6b; }
.mock-bar span:nth-child(2) { background: #ffc857; }
.mock-bar span:nth-child(3) { background: #3ddc84; }
.mock-bar em { margin-left: 8px; font-style: normal; font-size: 12px; color: var(--muted); }
.mock-body { display: grid; grid-template-columns: 54px 1fr; min-height: 260px; }
.mock-side { display: flex; flex-direction: column; gap: 12px; padding: 16px 0; align-items: center; border-right: 1px solid var(--border); }
.mock-side i { width: 22px; height: 22px; border-radius: 7px; background: color-mix(in srgb, var(--primary) 18%, transparent); }
.mock-side i:first-child { background: var(--primary); }
.mock-main { padding: 16px; }
.mock-screen { border-radius: calc(var(--radius) * 0.7); overflow: hidden; border: 1px solid var(--border); }
.mock-screen img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.mock-rows { margin-top: 14px; display: grid; gap: 9px; }
.mock-rows span { display: block; height: 9px; border-radius: 999px; background: color-mix(in srgb, var(--muted) 22%, transparent); }
.mock-rows span:nth-child(1) { width: 82%; }
.mock-rows span:nth-child(2) { width: 64%; }
.mock-rows span:nth-child(3) { width: 46%; }
.float-card {
	position: absolute;
	padding: 10px 15px;
	border-radius: 14px;
	background: var(--surface);
	border: 1px solid var(--border);
	box-shadow: var(--shadow);
	font-size: 13px;
	color: var(--heading);
}
.float-card b { font-weight: 700; }
.float-a { top: 12%; left: -24px; }
.float-b { bottom: 10%; right: -18px; }

.stats { padding: 34px 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); background: color-mix(in srgb, var(--surface) 55%, transparent); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.stat strong { display: block; font-family: var(--font-head); font-size: 1.5rem; color: var(--primary); }
.stat span { color: var(--muted); font-size: 14px; }

.features, .usecases, .steps, .guide, .faq, .intro { padding: 84px 0; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.feature-card {
	padding: 26px 24px;
	background: var(--surface);
	border: 1px solid var(--border);
	border-radius: var(--radius);
	box-shadow: 0 22px 40px -34px rgba(15, 23, 42, 0.55);
	transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.feature-card:hover { transform: translateY(-4px); border-color: color-mix(in srgb, var(--primary) 45%, var(--border)); box-shadow: 0 26px 46px -30px color-mix(in srgb, var(--primary) 35%, transparent); }
.feature-card h3 { margin-bottom: 8px; }
.feature-card p { color: var(--muted); font-size: 14.5px; margin: 0; }
.feature-icon {
	display: grid;
	place-items: center;
	width: 46px;
	height: 46px;
	margin-bottom: 16px;
	border-radius: calc(var(--radius) * 0.7);
	background: color-mix(in srgb, var(--primary) 13%, transparent);
	color: var(--primary);
}
.feature-icon svg { width: 23px; height: 23px; }

.intro-grid { display: grid; grid-template-columns: 0.92fr 1.08fr; gap: 52px; align-items: center; }
.intro-media img { width: 100%; border-radius: var(--radius); border: 1px solid var(--border); box-shadow: var(--shadow); aspect-ratio: 3 / 2; object-fit: cover; }
.intro-copy p { color: var(--muted); }
.check-list { margin-top: 22px; display: grid; gap: 12px; }
.check-list li { display: flex; align-items: flex-start; gap: 10px; color: var(--text); }
.check-list svg { width: 20px; height: 20px; color: var(--primary); flex: 0 0 auto; margin-top: 3px; }

.case-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.case-card {
	position: relative;
	padding: 26px 22px;
	border-radius: var(--radius);
	background: linear-gradient(160deg, color-mix(in srgb, var(--surface) 96%, var(--primary) 4%), var(--surface));
	border: 1px solid var(--border);
	overflow: hidden;
}
.case-num { font-family: var(--font-head); font-size: 13px; font-weight: 800; color: var(--primary); letter-spacing: 0.08em; }
.case-card h3 { margin: 10px 0 8px; }
.case-card p { margin: 0; color: var(--muted); font-size: 14.5px; }

.step-list { display: grid; gap: 18px; counter-reset: step; }
.step-list li { display: grid; grid-template-columns: 58px 1fr; gap: 20px; padding: 22px 24px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--border); }
.step-index { display: grid; place-items: center; width: 46px; height: 46px; border-radius: 50%; background: linear-gradient(135deg, var(--primary), var(--accent)); color: #fff; font-weight: 800; font-size: 14px; }
.step-list h3 { margin-bottom: 6px; }
.step-list p { margin: 0; color: var(--muted); font-size: 14.5px; }

.guide-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.guide-card { padding: 28px 26px; border-radius: var(--radius); border: 1px solid var(--border); background: var(--surface); }
.guide-card p { color: var(--muted); margin: 0; }
.guide-media { display: flex; flex-direction: column; gap: 16px; justify-content: space-between; }
.guide-media img { width: 100%; border-radius: var(--radius); border: 1px solid var(--border); aspect-ratio: 3 / 2; object-fit: cover; }
.guide-media p { padding: 18px 20px; border-radius: var(--radius); background: color-mix(in srgb, var(--primary) 9%, transparent); color: var(--text); font-size: 14.5px; margin: 0; }

.faq-list { display: grid; gap: 12px; max-width: 880px; margin: 0 auto; }
.faq-list details { background: var(--surface); border: 1px solid var(--border); border-radius: calc(var(--radius) * 0.8); padding: 4px 20px; }
.faq-list summary { position: relative; cursor: pointer; list-style: none; padding: 16px 34px 16px 0; font-weight: 700; color: var(--heading); }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-mark { position: absolute; right: 0; top: 50%; width: 14px; height: 14px; transform: translateY(-50%); }
.faq-mark::before, .faq-mark::after { content: ""; position: absolute; background: var(--primary); border-radius: 2px; }
.faq-mark::before { left: 0; top: 6px; width: 14px; height: 2px; }
.faq-mark::after { left: 6px; top: 0; width: 2px; height: 14px; transition: transform 0.2s ease; }
.faq-list details[open] .faq-mark::after { transform: scaleY(0); }
.faq-answer { padding: 0 0 16px; color: var(--muted); }
.faq-answer p { margin: 0; }

.cta { padding: 84px 0; }
.cta-inner { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 46px; align-items: center; padding: 46px; border-radius: calc(var(--radius) * 1.2); background: var(--hero-grad); color: #fff; position: relative; overflow: hidden; }
.cta-inner h2, .cta-inner p { color: #fff; }
.cta-inner .eyebrow { background: rgba(255,255,255,0.16); color: #fff; }
.cta-copy p { opacity: 0.9; }
.cta-inner .btn-ghost { border-color: rgba(255,255,255,0.5); color: #fff; }
.cta-inner .btn-ghost:hover { background: rgba(255,255,255,0.12); color: #fff; }
.cta-media img { border-radius: var(--radius); box-shadow: 0 30px 60px -30px rgba(0,0,0,0.55); aspect-ratio: 16 / 10; object-fit: cover; }

.flinks-section { padding: 26px 0 30px; border-top: 1px solid var(--border); background: color-mix(in srgb, var(--surface) 40%, transparent); }
.flinks { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 4px; justify-content: center; color: var(--muted); font-size: 13px; }
.flinks-label { color: var(--muted); }
.flinks a { color: var(--muted); font-size: 13px; }
.flinks a:hover { color: var(--primary); }

.site-footer { padding: 62px 0 26px; background: #0b1220; color: #f8fafc; border-top: 1px solid var(--border); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 34px; }
.footer-about p, .footer-note p { color: #9fb0c9; font-size: 14.5px; }
.brand-footer { color: #f8fafc; margin-bottom: 14px; }
.footer-col h4 { color: #f8fafc; font-size: 15px; margin-bottom: 14px; }
.footer-col ul { display: grid; gap: 9px; }
.footer-col a { color: #9fb0c9; font-size: 14px; }
.footer-col a:hover { color: var(--accent); }
.footer-bottom { display: flex; justify-content: space-between; gap: 16px; margin-top: 40px; padding-top: 20px; border-top: 1px solid color-mix(in srgb, #f8fafc 16%, transparent); color: #9fb0c9; font-size: 13px; }

.reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.5s ease, transform 0.5s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

/* Archetype A: dark glow tech */
body.arch-a { --bg: #f6f9fe; background: var(--bg); }
.arch-a .hero { padding-top: 96px; }
.arch-a .hero-bg { background: radial-gradient(720px 420px at 78% 12%, color-mix(in srgb, var(--primary) 34%, transparent), transparent 70%), radial-gradient(560px 380px at 12% 90%, color-mix(in srgb, var(--accent) 26%, transparent), transparent 72%); }
.arch-a .hero-copy h1 { background: linear-gradient(120deg, var(--heading), color-mix(in srgb, var(--primary) 80%, #fff)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.arch-a .feature-card, .arch-a .case-card, .arch-a .step-list li, .arch-a .guide-card, .arch-a .faq-list details { background: color-mix(in srgb, var(--surface) 88%, transparent); backdrop-filter: blur(8px); }
.arch-a .stats { background: transparent; }

/* Archetype B: bright saas */
.arch-b .hero-bg { background: radial-gradient(620px 380px at 84% 6%, color-mix(in srgb, var(--primary) 14%, transparent), transparent 70%); }
.arch-b .stats { background: var(--surface); }
.arch-b .feature-card { box-shadow: 0 18px 42px -34px rgba(15, 23, 42, 0.55); }
.arch-b .case-card { background: var(--surface); }
.arch-b .section-head { text-align: left; margin-left: 0; }
.arch-b .feature-grid .feature-card:nth-child(1), .arch-b .feature-grid .feature-card:nth-child(6) { background: linear-gradient(150deg, color-mix(in srgb, var(--primary) 12%, var(--surface)), var(--surface)); }

/* Archetype C: gradient wave bento */
.arch-c .hero { text-align: center; padding-bottom: 96px; }
.arch-c .hero-inner { grid-template-columns: 1fr; gap: 44px; justify-items: center; }
.arch-c .hero-copy { max-width: 820px; }
.arch-c .hero-sub, .arch-c .hero-intro { margin-left: auto; margin-right: auto; }
.arch-c .hero-actions, .arch-c .hero-badges { justify-content: center; }
.arch-c .hero-bg { background: radial-gradient(760px 420px at 50% -10%, color-mix(in srgb, var(--primary) 24%, transparent), transparent 70%); }
.arch-c .hero-visual { max-width: 900px; width: 100%; }
.arch-c .feature-grid { grid-template-columns: repeat(4, 1fr); }
.arch-c .feature-card:nth-child(1), .arch-c .feature-card:nth-child(6) { grid-column: span 2; }
.arch-c .feature-card { border-radius: calc(var(--radius) * 1.2); background: linear-gradient(160deg, color-mix(in srgb, var(--primary) 10%, var(--surface)), var(--surface)); }
.arch-c .cta-inner { border-radius: calc(var(--radius) * 1.6); }

/* Archetype D: editorial minimal */
body.arch-d { font-size: 17px; }
.arch-d h1, .arch-d h2 { font-family: var(--font-head); letter-spacing: 0; }
.arch-d .hero { padding: 110px 0 70px; }
.arch-d .hero-inner { grid-template-columns: 1.15fr 0.85fr; }
.arch-d .eyebrow { background: transparent; padding: 0; color: var(--muted); letter-spacing: 0.16em; font-weight: 700; }
.arch-d .hero-copy h1 { font-size: clamp(2.2rem, 5vw, 3.9rem); }
.arch-d .feature-card, .arch-d .case-card, .arch-d .step-list li, .arch-d .guide-card, .arch-d .faq-list details { border-radius: 2px; box-shadow: none; }
.arch-d .step-list li { grid-template-columns: 42px 1fr; }
.arch-d .step-index { width: auto; height: auto; background: none; color: var(--primary); font-size: 13px; letter-spacing: 0.12em; border-radius: 0; }
.arch-d .section-head { text-align: left; margin-left: 0; }
.arch-d .case-grid { grid-template-columns: repeat(2, 1fr); }
.arch-d .cta-inner { border-radius: 2px; }

/* Archetype E: fresh rounded */
.arch-e .hero-bg { background: radial-gradient(520px 360px at 12% 18%, color-mix(in srgb, var(--primary) 20%, transparent), transparent 70%), radial-gradient(460px 320px at 88% 78%, color-mix(in srgb, var(--accent) 20%, transparent), transparent 70%); }
.arch-e .feature-card, .arch-e .case-card, .arch-e .guide-card, .arch-e .faq-list details { border-radius: calc(var(--radius) * 1.3); }
.arch-e .feature-icon { border-radius: 50%; }
.arch-e .step-list li { border-radius: calc(var(--radius) * 1.3); }
.arch-e .case-card { background: var(--surface); }
.arch-e .stats { background: linear-gradient(120deg, color-mix(in srgb, var(--primary) 8%, var(--surface)), color-mix(in srgb, var(--accent) 8%, var(--surface))); border: 0; }

/* Archetype F: bold diagonal */
.arch-f .hero-bg { background: linear-gradient(115deg, color-mix(in srgb, var(--primary) 92%, #000) 0%, color-mix(in srgb, var(--primary) 70%, transparent) 46%, transparent 74%); }
.arch-f .hero { color: #fff; }
.arch-f .hero-copy h1, .arch-f .hero-copy .eyebrow { color: #fff; }
.arch-f .hero-sub, .arch-f .hero-intro { color: rgba(255,255,255,0.86); }
.arch-f .eyebrow { background: rgba(255,255,255,0.16); color: #fff; }
.arch-f .hero-badges li { color: rgba(255,255,255,0.86); border-color: rgba(255,255,255,0.28); background: rgba(255,255,255,0.08); }
.arch-f .hero .btn-ghost { color: #fff; border-color: rgba(255,255,255,0.5); }
.arch-f .stats { background: color-mix(in srgb, var(--primary) 10%, var(--surface)); border: 0; }
.arch-f .case-card, .arch-f .feature-card, .arch-f .guide-card { border-radius: calc(var(--radius) * 0.6); }
.arch-f .section-head h2 { position: relative; display: inline-block; }
.arch-f .section-head h2::after { content: ""; position: absolute; left: 0; bottom: -10px; width: 64px; height: 4px; border-radius: 4px; background: var(--accent); }
.arch-f .section-head { text-align: left; margin-left: 0; }

@media (max-width: 1080px) {
	.hero-inner { grid-template-columns: 1fr; gap: 40px; }
	.intro-grid, .cta-inner, .guide-grid { grid-template-columns: 1fr; }
	.feature-grid { grid-template-columns: repeat(2, 1fr); }
	.arch-c .feature-grid { grid-template-columns: repeat(2, 1fr); }
	.case-grid { grid-template-columns: repeat(2, 1fr); }
	.footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
	.nav { position: absolute; left: 16px; right: 16px; top: 74px; flex-direction: column; gap: 4px; padding: 14px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--border); box-shadow: var(--shadow); display: none; }
	.nav.is-open { display: flex; }
	.nav a { display: block; padding: 10px 12px; border-radius: 10px; }
	.nav-toggle { display: block; }
	.header-actions .btn { display: none; }
	.hero { padding: 60px 0 52px; }
	.features, .usecases, .steps, .guide, .faq, .intro, .cta { padding: 60px 0; }
	.stats-grid { grid-template-columns: repeat(2, 1fr); }
	.feature-grid, .arch-c .feature-grid, .case-grid, .arch-d .case-grid { grid-template-columns: 1fr; }
	.arch-c .feature-card:nth-child(1), .arch-c .feature-card:nth-child(6) { grid-column: auto; }
	.float-card { display: none; }
	.cta-inner { padding: 30px 22px; }
	.footer-grid { grid-template-columns: 1fr; gap: 26px; }
	.footer-bottom { flex-direction: column; gap: 6px; }
}