:root {
	--mk-sky: #38bdf8;
	--mk-sky-d: #0ea5e9;
	--mk-sky-s: #7dd3fc;
	--mk-ink: #0f3a5c;
	--mk-mute: #5b7a94;
	--mk-line: #cfefff;
	--mk-paper: #ffffff;
	--mk-card: #ffffff;
	--mk-page: 1600px;
	--mk-gutter: 32px;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body.open-body {
	min-height: 100vh;
	font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
	color: var(--mk-ink);
	background: var(--mk-paper);
	overflow-x: hidden;
}
body.open-body:before,
body.open-body:after {
	content: "";
	position: fixed; inset: 0; pointer-events: none; z-index: 0;
}
body.open-body:before {
	background:
		radial-gradient(900px 380px at 8% -10%, rgba(56,189,248,.28), transparent 58%),
		radial-gradient(720px 360px at 96% 0%, rgba(125,211,252,.35), transparent 52%),
		linear-gradient(180deg, #e8f7ff 0%, #ffffff 38%, #ffffff 100%);
}
body.open-body:after {
	opacity: .22;
	background-image:
		linear-gradient(rgba(14,165,233,.08) 1px, transparent 1px),
		linear-gradient(90deg, rgba(14,165,233,.08) 1px, transparent 1px);
	background-size: 48px 48px;
	mask-image: radial-gradient(ellipse at center, #000 42%, transparent 82%);
}
a { color: var(--mk-sky-d); }
.open-top, .open-hero, .wrap, .open-panel, .open-foot, .open-band { position: relative; z-index: 1; }
.open-inner {
	width: 100%;
	max-width: var(--mk-page);
	margin: 0 auto;
	padding-left: var(--mk-gutter);
	padding-right: var(--mk-gutter);
}
.open-top {
	position: sticky; top: 0; z-index: 20;
	padding: 12px 0;
	background: rgba(255,255,255,.86);
	border-bottom: 1px solid var(--mk-line);
	backdrop-filter: blur(16px);
	box-shadow: 0 8px 24px rgba(14,165,233,.08);
}
.open-top .open-inner {
	display: flex; align-items: center; justify-content: space-between;
	gap: 16px; flex-wrap: wrap;
}
.open-top a.brand {
	text-decoration: none; color: var(--mk-ink);
	display: flex; align-items: center; gap: 10px;
}
.open-top a.brand img.brand-logo {
	width: 52px; height: 52px; display: block;
	border-radius: 12px;
	background: #fff;
	box-shadow: 0 0 0 1px #e0f4ff;
}
.open-top a.brand strong {
	font-size: 18px; letter-spacing: .08em;
	color: #0369a1;
}
.open-top a.brand span { font-size: 12px; color: var(--mk-mute); letter-spacing: .08em; display: block; }
.open-nav { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.open-nav a {
	text-decoration: none; color: #1e5a7a; font-size: 14px;
	padding: 8px 12px; border-radius: 999px; border: 1px solid transparent;
}
.open-nav a:hover, .open-nav a.on {
	background: #e8f7ff;
	border-color: var(--mk-line);
	color: var(--mk-sky-d);
}
.open-nav a.btn {
	background: linear-gradient(90deg, #0ea5e9, #38bdf8);
	color: #fff; font-weight: 700;
	padding: 8px 16px; border: 0;
	box-shadow: 0 8px 18px rgba(14,165,233,.28);
}
.open-nav a.btn:hover { color: #fff; filter: brightness(1.05); }
.open-hero {
	padding: 72px 0 80px; overflow: hidden; min-height: 460px;
	display: flex; align-items: center;
}
.open-hero-bg {
	position: absolute; inset: 0; z-index: 0;
	background: #0b1c2c url(/img/band-cyan.png) center/cover no-repeat;
}
.open-hero-bg:after {
	content: ""; position: absolute; inset: 0;
	background: linear-gradient(100deg, rgba(255,255,255,.92) 0%, rgba(232,247,255,.82) 38%, rgba(7,24,40,.28) 100%);
}
.open-hero-inner { z-index: 1; }
.open-hero-inner {
	max-width: var(--mk-page); margin: 0 auto; padding: 0 var(--mk-gutter);
	position: relative; display: flex; gap: 40px; align-items: center;
}
.open-hero-copy { flex: 1; min-width: 0; }
.open-hero-mark {
	flex: 0 0 208px;
	width: 208px; height: 208px;
	background: #fff;
	border: 1px solid var(--mk-line);
	border-radius: 36px;
	box-shadow: 0 18px 40px rgba(14,165,233,.16);
	display: flex; align-items: center; justify-content: center;
}
.open-hero-mark img { width: 160px; height: 160px; }
.open-kicker {
	display: inline-flex; align-items: center; gap: 8px;
	font-size: 12px; letter-spacing: .22em;
	color: var(--mk-sky-d); font-weight: 700; margin-bottom: 14px;
}
.open-kicker:before {
	content: ""; width: 8px; height: 8px; border-radius: 50%;
	background: var(--mk-sky);
	box-shadow: 0 0 0 4px rgba(56,189,248,.22);
}
.open-hero h1 {
	margin: 0 0 16px; font-size: clamp(28px, 4.8vw, 46px); line-height: 1.18; font-weight: 800;
	max-width: 16em; color: #075985;
}
.open-hero p.lead {
	margin: 0 0 26px; max-width: 40em; color: var(--mk-mute); font-size: 16px; line-height: 1.8;
}
.open-hero-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.open-hero-actions a {
	text-decoration: none; border-radius: 12px; padding: 12px 20px; font-weight: 700; font-size: 15px;
}
.open-hero-actions .pri {
	background: linear-gradient(90deg, #0ea5e9, #38bdf8);
	color: #fff;
	box-shadow: 0 10px 22px rgba(14,165,233,.28);
}
.open-hero-actions .pri:hover { filter: brightness(1.05); }
.open-hero-actions .ghost {
	background: #fff;
	color: #0369a1;
	border: 1px solid var(--mk-line);
}
.open-hero-actions .ghost:hover { border-color: var(--mk-sky); color: var(--mk-sky-d); }
.wrap { max-width: var(--mk-page); margin: 0 auto; padding: 8px var(--mk-gutter) 56px; }
.sec-h { margin: 40px 0 8px; font-size: 22px; color: #075985; }
.sec-h:after {
	content: ""; display: block; width: 72px; height: 3px; margin-top: 8px;
	background: linear-gradient(90deg, #0ea5e9, #7dd3fc);
	border-radius: 2px;
}
.sec-p { margin: 0 0 20px; color: var(--mk-mute); font-size: 14px; }
.grid4, .grid3, .grid-sites { display: grid; gap: 20px; }
.grid4, .grid3, .grid-sites { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card, .site {
	background: var(--mk-card);
	border: 1px solid var(--mk-line);
	border-radius: 18px;
	padding: 0;
	text-decoration: none;
	color: inherit;
	display: block;
	overflow: hidden;
	box-shadow: 0 10px 24px rgba(14,165,233,.08);
	transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.card:hover, a.site:hover {
	transform: translateY(-4px);
	border-color: var(--mk-sky);
	box-shadow: 0 18px 36px rgba(14,165,233,.18);
}
.card-shot, .site-shot {
	height: 168px; display: block; position: relative;
	background-size: cover; background-position: center;
}
.card-shot.tone-bw, .site-shot.tone-bw { filter: grayscale(1) contrast(1.12); }
.card-shot.tone-cyan, .site-shot.tone-cyan { filter: saturate(1.15) contrast(1.05); }
.card-shot.tone-ink, .site-shot.tone-ink { filter: grayscale(.35) contrast(1.08) saturate(.7); }
.card-shot:after, .site-shot:after {
	content: ""; position: absolute; inset: 0;
	background: linear-gradient(180deg, transparent 40%, rgba(7,40,64,.28));
	pointer-events: none;
}
.card-body, .site-body { padding: 18px 18px 20px; }
.card.plain, .site.plain { padding: 18px 18px 16px; }
.card h3, .site h3 { margin: 0 0 6px; font-size: 17px; color: #075985; }
.card p, .site p { margin: 0; color: var(--mk-mute); font-size: 13px; line-height: 1.65; }
.ico {
	width: 64px; height: 64px; display: block; margin-bottom: 12px;
	background: #fff; border-radius: 16px; object-fit: contain;
	box-shadow: 0 8px 18px rgba(14,165,233,.16);
}
.site-head { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; }
.site-head .ico { margin: 0; width: 52px; height: 52px; border-radius: 14px; }
.open-band {
	min-height: 300px; margin: 8px 0 4px;
	display: flex; align-items: center;
	overflow: hidden;
}
.open-band-bg {
	position: absolute; inset: 0;
	background-size: cover; background-position: center;
}
.open-band.tone-bw .open-band-bg { filter: grayscale(1) contrast(1.15); }
.open-band.tone-cyan .open-band-bg { filter: saturate(1.1); }
.open-band.tone-white .open-band-bg { filter: contrast(1.05); }
.open-band-bg:after {
	content: ""; position: absolute; inset: 0;
	background: linear-gradient(90deg, rgba(4,16,28,.72) 0%, rgba(4,16,28,.28) 55%, rgba(4,16,28,.12) 100%);
}
.open-band.tone-white .open-band-bg:after {
	background: linear-gradient(90deg, rgba(255,255,255,.78) 0%, rgba(232,247,255,.45) 50%, rgba(255,255,255,.2) 100%);
}
.open-band-copy { position: relative; z-index: 1; padding-top: 48px; padding-bottom: 48px; max-width: 760px; }
.open-band-copy .kicker {
	letter-spacing: .22em; font-size: 12px; font-weight: 700; color: #7dd3fc; margin: 0 0 10px;
}
.open-band-copy h2 {
	margin: 0 0 10px; font-size: clamp(22px, 3vw, 36px); color: #fff; font-weight: 800; line-height: 1.25;
}
.open-band-copy p { margin: 0; color: rgba(255,255,255,.86); font-size: 15px; line-height: 1.7; max-width: 36em; }
.open-band.tone-white .open-band-copy .kicker { color: var(--mk-sky-d); }
.open-band.tone-white .open-band-copy h2 { color: #075985; }
.open-band.tone-white .open-band-copy p { color: var(--mk-mute); }
.tag {
	display: inline-block; font-size: 11px; font-weight: 700; letter-spacing: .08em;
	color: #0369a1; background: #e8f7ff;
	border: 1px solid var(--mk-line);
	border-radius: 999px; padding: 3px 8px; margin-bottom: 8px;
}
.steps { counter-reset: st; }
.steps article h3:before {
	counter-increment: st; content: counter(st);
	display: inline-flex; width: 22px; height: 22px; margin-right: 8px;
	border-radius: 50%;
	background: linear-gradient(135deg, #0ea5e9, #7dd3fc);
	color: #fff;
	align-items: center; justify-content: center; font-size: 12px; vertical-align: middle;
}
.open-panel { max-width: 640px; margin: 32px auto 56px; padding: 0 var(--mk-gutter); }
.open-docs { max-width: var(--mk-page); }
.open-box {
	background: #fff;
	border: 1px solid var(--mk-line);
	border-radius: 16px; padding: 28px;
	box-shadow: 0 16px 36px rgba(14,165,233,.1);
}
.open-box h1 { margin: 0 0 8px; font-size: 24px; color: #075985; }
.open-box .reg-lead { color: var(--mk-mute); font-size: 14px; margin: 0 0 18px; }
.open-box .reg-field { margin-bottom: 14px; }
.open-box label { display: block; font-size: 13px; margin-bottom: 6px; color: #1e5a7a; }
.open-box .inpuTit, .open-box input.inpuTit, .open-box textarea.inpuTit {
	width: 100%; height: 44px;
	border: 1px solid var(--mk-line);
	background: #fff;
	color: var(--mk-ink);
	border-radius: 10px;
	padding: 0 12px; font-size: 15px; font-family: inherit;
}
.open-box .inpuTit:focus, .open-box textarea.inpuTit:focus {
	outline: 0; border-color: var(--mk-sky-d); box-shadow: 0 0 0 3px rgba(56,189,248,.2);
}
.open-box textarea.inpuTit { height: auto; padding: 10px 12px; }
.open-box .reg-submit {
	width: 100%; height: 46px; border: 0; border-radius: 12px;
	background: linear-gradient(90deg, #0ea5e9, #38bdf8);
	color: #fff; font-size: 16px; font-weight: 700; cursor: pointer;
	box-shadow: 0 10px 22px rgba(14,165,233,.28);
}
.open-box .reg-submit:hover { filter: brightness(1.05); }
.open-box .reg-alert { background: #fee2e2; color: #b91c1c; padding: 10px 12px; border-radius: 8px; margin-bottom: 12px; }
.open-box .reg-alert-ok { background: #dcfce7; color: #166534; padding: 10px 12px; border-radius: 8px; margin-bottom: 12px; font-size: 13px; }
.open-box table { width: 100%; border-collapse: collapse; font-size: 13px; margin: 8px 0 16px; }
.open-box th, .open-box td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--mk-line); word-break: break-all; }
.open-box pre {
	background: #f0f9ff; color: #075985; padding: 14px; border-radius: 10px;
	overflow: auto; font-size: 12px; line-height: 1.5;
	border: 1px solid var(--mk-line);
}
.open-foot {
	border-top: 1px solid var(--mk-line);
	padding: 22px 0 36px; color: var(--mk-mute); font-size: 12px;
	background: #fff;
}
.open-foot .open-inner {
	display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
}
@media (max-width: 1280px) {
	:root { --mk-gutter: 24px; }
}
@media (max-width: 1100px) {
	.grid4, .grid3, .grid-sites { grid-template-columns: repeat(2, minmax(0, 1fr)); }
	.card-shot, .site-shot { height: 140px; }
}
@media (max-width: 960px) {
	.grid4, .grid3, .grid-sites { grid-template-columns: 1fr 1fr; }
	.open-hero-inner { flex-direction: column-reverse; align-items: flex-start; }
	.open-hero { min-height: 0; padding: 40px 0 36px; }
}
@media (max-width: 640px) {
	:root { --mk-gutter: 16px; }
	.grid4, .grid3, .grid-sites { grid-template-columns: 1fr; }
	.open-hero { padding-top: 28px; padding-bottom: 20px; }
	.open-hero-mark { width: 136px; height: 136px; flex-basis: 136px; border-radius: 28px; }
	.open-hero-mark img { width: 104px; height: 104px; }
	.open-nav { width: 100%; }
	.open-nav a { padding: 8px 10px; }
	.open-band { min-height: 220px; }
}