/* webvpn.org — design system */
:root {
  --bg: #070b1a;
  --bg-2: #0b1226;
  --bg-3: #101a36;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-2: rgba(255, 255, 255, 0.07);
  --line: rgba(148, 163, 184, 0.18);
  --text: #e6ecf7;
  --muted: #9fb0cc;
  --cyan: #22d3ee;
  --violet: #8b5cf6;
  --amber: #fbbf24;
  --accent-grad: linear-gradient(120deg, #22d3ee 0%, #6366f1 55%, #a855f7 100%);
  --radius: 18px;
  --wrap: 1180px;
  --font: "Inter", "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  --shadow: 0 30px 80px -30px rgba(0, 0, 0, 0.8);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; font-family: var(--font); color: var(--text); background: var(--bg);
  line-height: 1.65; font-size: 17px; overflow-x: hidden;
  background-image:
    radial-gradient(1200px 600px at 80% -10%, rgba(99, 102, 241, 0.18), transparent 60%),
    radial-gradient(900px 500px at -10% 30%, rgba(34, 211, 238, 0.12), transparent 60%);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--cyan); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
h1, h2, h3, h4 { line-height: 1.15; letter-spacing: -0.02em; margin: 0 0 0.6em; font-weight: 750; }
h1 { font-size: clamp(1.9rem, 3.6vw, 3.1rem); }
h2 { font-size: clamp(1.5rem, 2.6vw, 2.1rem); }
h3 { font-size: 1.25rem; }
p { margin: 0 0 1.1em; }
.wrap { width: min(var(--wrap), 100% - 2.5rem); margin-inline: auto; }
.wrap.narrow { max-width: 780px; }
.center { text-align: center; }
.skip { position: absolute; left: -999px; top: 0; background: var(--cyan); color: #000; padding: 8px 12px; z-index: 100; }
.skip:focus { left: 12px; }
.eyebrow { text-transform: uppercase; letter-spacing: 0.14em; font-size: 0.74rem; font-weight: 700; color: var(--cyan); margin-bottom: 1rem; }
.lede { font-size: 1.15rem; color: var(--muted); max-width: 60ch; }
.meta { color: var(--muted); font-size: 0.92rem; }

/* header */
.site-header { position: sticky; top: 0; z-index: 50; backdrop-filter: blur(14px); background: rgba(7, 11, 26, 0.7); border-bottom: 1px solid var(--line); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 68px; }
.brand { display: inline-flex; align-items: center; gap: 0.6rem; color: var(--text); font-weight: 800; font-size: 1.2rem; letter-spacing: -0.02em; }
.brand:hover { text-decoration: none; }
.brand-tld { color: var(--cyan); }
.brand-mark { position: relative; width: 34px; height: 34px; display: inline-block; perspective: 300px; }
.brand-ring { position: absolute; inset: 0; border: 2px solid var(--cyan); border-radius: 50%; animation: spin3d 7s linear infinite; }
.brand-ring.r2 { border-color: var(--violet); animation-duration: 11s; animation-direction: reverse; }
.brand-core { position: absolute; inset: 11px; border-radius: 50%; background: var(--accent-grad); box-shadow: 0 0 18px rgba(34, 211, 238, 0.7); }
@keyframes spin3d { from { transform: rotateY(0) rotateX(60deg); } to { transform: rotateY(360deg) rotateX(60deg); } }
.site-nav ul { list-style: none; margin: 0; padding: 0; display: flex; gap: 0.25rem; align-items: center; }
.site-nav a { color: var(--text); padding: 0.55rem 0.8rem; border-radius: 10px; display: block; font-weight: 500; font-size: 0.95rem; }
.site-nav a:hover, .site-nav a[aria-current="page"] { background: var(--surface-2); text-decoration: none; }
.site-nav li.has-menu { position: relative; display: flex; align-items: center; }
.sub-toggle { background: none; border: 0; color: var(--muted); width: 26px; height: 26px; cursor: pointer; position: relative; }
.sub-toggle::after { content: ""; position: absolute; left: 8px; top: 7px; width: 7px; height: 7px; border-right: 2px solid currentColor; border-bottom: 2px solid currentColor; transform: rotate(45deg); }
.submenu { position: absolute; top: 100%; left: 0; min-width: 220px; background: var(--bg-2); border: 1px solid var(--line); border-radius: 14px; padding: 0.4rem !important; display: none !important; flex-direction: column; box-shadow: var(--shadow); }
.has-menu:hover .submenu, .has-menu:focus-within .submenu, .has-menu.open .submenu { display: flex !important; }
.submenu li a { padding: 0.5rem 0.8rem; }
.burger { display: none; position: relative; background: none; border: 1px solid var(--line); border-radius: 10px; width: 44px; height: 44px; padding: 0; cursor: pointer; -webkit-appearance: none; appearance: none; }
.burger span { position: absolute; left: 11px; right: 11px; height: 2px; background: var(--text); border-radius: 2px; transition: transform .25s, opacity .25s; }
.burger span:nth-child(1) { top: 14px; }
.burger span:nth-child(2) { top: 21px; }
.burger span:nth-child(3) { top: 28px; }
.burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.nav-quick { display: none; margin-left: auto; padding: 0.5rem 0.85rem; border: 1px solid var(--line); border-radius: 10px; color: var(--text); font-weight: 600; font-size: 0.9rem; }
.nav-quick[aria-current="page"] { background: var(--surface-2); }

/* hero */
.hero { position: relative; padding: clamp(3rem, 8vw, 6.5rem) 0 3rem; overflow: hidden; }
.hero-bg { position: absolute; inset: 0; pointer-events: none; z-index: -1;
  background:
    radial-gradient(700px 400px at 70% 40%, rgba(139, 92, 246, 0.22), transparent 70%),
    radial-gradient(500px 300px at 20% 80%, rgba(34, 211, 238, 0.14), transparent 70%);
  mask-image: linear-gradient(to bottom, #000 70%, transparent);
}
.hero-bg::before { content: ""; position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px); background-size: 48px 48px; transform: perspective(600px) rotateX(60deg) translateY(-20%) scale(1.6); transform-origin: top; opacity: 0.6; }
.hero-bg.small { mask-image: linear-gradient(to bottom, #000 40%, transparent); }
.hero-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 2rem; align-items: center; }
.hero h1 { background: linear-gradient(180deg, #fff, #c7d2fe); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-actions { display: flex; gap: 0.8rem; flex-wrap: wrap; margin: 1.6rem 0; }
.hero-actions.center { justify-content: center; }
.btn { display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.85rem 1.3rem; border-radius: 999px; font-weight: 650; transition: transform .2s, box-shadow .2s; }
.btn:hover { text-decoration: none; transform: translateY(-2px); }
.btn-primary { background: var(--accent-grad); color: #07101f; box-shadow: 0 10px 30px -10px rgba(99, 102, 241, 0.8); }
.btn-ghost { border: 1px solid var(--line); color: var(--text); background: var(--surface); }
.hero-stats { list-style: none; padding: 0; margin: 0; display: flex; gap: 2rem; flex-wrap: wrap; }
.hero-stats li { display: flex; flex-direction: column; }
.hero-stats strong { font-size: 1.4rem; letter-spacing: -0.02em; }
.hero-stats span { color: var(--muted); font-size: 0.85rem; }
.hero-visual { position: relative; aspect-ratio: 1; max-width: 560px; margin-inline: auto; width: 100%; }
#globe { width: 100%; height: 100%; filter: drop-shadow(0 0 40px rgba(34, 211, 238, 0.25)); }
.hero-badge { position: absolute; display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.5rem 0.9rem; border-radius: 999px; background: rgba(11, 18, 38, 0.85); border: 1px solid var(--line); font-size: 0.85rem; font-weight: 600; backdrop-filter: blur(8px); animation: floaty 6s ease-in-out infinite; }
.hero-badge .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 10px var(--cyan); }
.hero-badge .dot.violet { background: var(--violet); box-shadow: 0 0 10px var(--violet); }
.hero-badge .dot.amber { background: var(--amber); box-shadow: 0 0 10px var(--amber); }
.hero-badge.b1 { top: 12%; left: -2%; }
.hero-badge.b2 { bottom: 20%; right: -4%; animation-delay: -2s; }
.hero-badge.b3 { top: 60%; left: -8%; animation-delay: -4s; }
@keyframes floaty { 0%, 100% { transform: translateY(0) translateZ(0); } 50% { transform: translateY(-10px); } }

/* sections */
.section { padding: clamp(3rem, 6vw, 5rem) 0; }
.section-alt { background: linear-gradient(180deg, transparent, rgba(255,255,255,0.025) 20%, rgba(255,255,255,0.025) 80%, transparent); }
.section-head { max-width: 64ch; margin-bottom: 2rem; }
.section-head p { color: var(--muted); }

/* cards with 3D tilt */
.tilt-grid { perspective: 1200px; }
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.4rem; }
.card { position: relative; display: flex; flex-direction: column; color: var(--text); background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transform-style: preserve-3d; transition: transform .35s ease, box-shadow .35s ease, border-color .35s; will-change: transform; }
.card:hover { text-decoration: none; border-color: rgba(34, 211, 238, 0.45); box-shadow: var(--shadow), 0 0 0 1px rgba(34,211,238,0.15); }
.card-media { aspect-ratio: 16 / 10; overflow: hidden; background: var(--bg-3); }
.card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.card:hover .card-media img { transform: scale(1.05); }
.card-body { padding: 1.2rem 1.3rem 1.4rem; transform: translateZ(20px); }
.card-kicker { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--violet); font-weight: 700; }
.card h3 { margin: 0.4rem 0 0.5rem; }
.card p { color: var(--muted); font-size: 0.95rem; margin: 0 0 0.8rem; }
.card-more { color: var(--cyan); font-weight: 600; font-size: 0.9rem; }
.card-shine { position: absolute; inset: 0; pointer-events: none; background: radial-gradient(400px circle at var(--mx, 50%) var(--my, 50%), rgba(255,255,255,0.12), transparent 45%); opacity: 0; transition: opacity .3s; }
.card:hover .card-shine { opacity: 1; }

/* platform grid */
.platform-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.1rem; perspective: 1000px; }
.platform { display: flex; flex-direction: column; align-items: flex-start; gap: 0.4rem; padding: 1.3rem; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); color: var(--text); transform-style: preserve-3d; transition: transform .35s, border-color .3s, background .3s; }
.platform:hover { text-decoration: none; border-color: rgba(139, 92, 246, 0.5); background: var(--surface-2); }
.platform-icon { width: 56px; height: 56px; border-radius: 14px; background: var(--bg-3); display: grid; place-items: center; transform: translateZ(30px); box-shadow: 0 10px 30px -12px rgba(0,0,0,0.9); }
.platform-name { font-weight: 700; font-size: 1.05rem; margin-top: 0.4rem; }
.platform-sub { color: var(--muted); font-size: 0.88rem; }

/* notice with CSS cube */
.notice-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; align-items: start; }
.notice { display: grid; grid-template-columns: 120px 1fr; gap: 1.5rem; padding: 1.8rem; border-radius: var(--radius); background: linear-gradient(135deg, rgba(139,92,246,0.14), rgba(34,211,238,0.08)); border: 1px solid var(--line); align-items: center; }
.notice h2 { font-size: 1.5rem; }
.notice-cube { perspective: 600px; width: 120px; height: 120px; display: grid; place-items: center; }
.cube { position: relative; width: 70px; height: 70px; transform-style: preserve-3d; animation: cube 14s linear infinite; }
.cube .f { position: absolute; inset: 0; border: 1px solid rgba(34,211,238,0.7); background: rgba(34,211,238,0.08); backdrop-filter: blur(2px); }
.cube .front { transform: translateZ(35px); } .cube .back { transform: rotateY(180deg) translateZ(35px); }
.cube .left { transform: rotateY(-90deg) translateZ(35px); } .cube .right { transform: rotateY(90deg) translateZ(35px); }
.cube .top { transform: rotateX(90deg) translateZ(35px); } .cube .bottom { transform: rotateX(-90deg) translateZ(35px); }
@keyframes cube { from { transform: rotateX(-20deg) rotateY(0); } to { transform: rotateX(-20deg) rotateY(360deg); } }

/* recent list */
.recent-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.6rem; }
.recent-list li { display: grid; grid-template-columns: 120px 1fr; gap: 0.3rem 1.2rem; padding: 1rem 1.2rem; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); align-items: baseline; }
.recent-list time { color: var(--muted); font-size: 0.85rem; font-variant-numeric: tabular-nums; }
.recent-list a { font-weight: 650; color: var(--text); }
.recent-list span { grid-column: 2; color: var(--muted); font-size: 0.92rem; }

/* full index */
.index-block { margin: 0 0 2rem; }
.index-block h3 { margin: 0 0 0.6rem; font-size: 1.15rem; }
.index-block h3 a { color: var(--text); }
.index-count { color: var(--muted); font-size: 0.85rem; font-weight: 500; }
.index-group { margin: 1rem 0 0.5rem; color: var(--muted); font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.08em; }
.index-list { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0.4rem 1.4rem; }
.index-list li { border-bottom: 1px solid var(--line); }
.index-list a { display: block; padding: 0.45rem 0; font-size: 0.93rem; overflow-wrap: anywhere; }

/* article */
.article-hero { position: relative; padding: 2rem 0 2.5rem; overflow: hidden; }
.article-hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 2.5rem; align-items: center; margin-top: 1rem; }
.crumbs ol { list-style: none; display: flex; flex-wrap: wrap; gap: 0.4rem; padding: 0; margin: 0 0 1rem; color: var(--muted); font-size: 0.85rem; }
.crumbs li + li::before { content: "/"; margin-right: 0.4rem; opacity: 0.5; }
.crumbs a { color: var(--muted); }
.article-figure { margin: 0; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); background: var(--bg-2); box-shadow: var(--shadow); transform-style: preserve-3d; }
.article-figure img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
.article-figure figcaption { padding: 0.7rem 1rem; font-size: 0.8rem; color: var(--muted); border-top: 1px solid var(--line); }
.float3d { animation: float3d 9s ease-in-out infinite; }
@keyframes float3d { 0%, 100% { transform: perspective(1200px) rotateY(-6deg) rotateX(3deg) translateY(0); } 50% { transform: perspective(1200px) rotateY(-3deg) rotateX(1deg) translateY(-8px); } }

.article-layout { display: grid; grid-template-columns: 240px minmax(0, 760px); gap: 3rem; padding: 1rem 0 3rem; justify-content: center; }
.toc-side { position: relative; }
.toc { position: sticky; top: 90px; padding: 1.1rem 1.2rem; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); font-size: 0.9rem; }
.toc-title { text-transform: uppercase; letter-spacing: 0.12em; font-size: 0.7rem; color: var(--muted); font-weight: 700; margin-bottom: 0.6rem; }
.toc ol { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.35rem; }
.toc a { color: var(--muted); display: block; padding: 0.15rem 0; border-left: 2px solid transparent; padding-left: 0.6rem; margin-left: -0.6rem; }
.toc a.active, .toc a:hover { color: var(--text); border-color: var(--cyan); text-decoration: none; }

.prose { font-size: 1.06rem; }
.prose h2 { margin-top: 2.4em; padding-top: 0.2em; position: relative; }
.prose h2::before { content: ""; display: block; width: 44px; height: 3px; border-radius: 3px; background: var(--accent-grad); margin-bottom: 0.7rem; }
.prose h3 { margin-top: 1.8em; }
.prose ul, .prose ol { padding-left: 1.4em; margin: 0 0 1.2em; }
.prose li { margin: 0.35em 0; }
.prose li::marker { color: var(--cyan); font-weight: 700; }
.prose strong { color: #fff; }
.prose blockquote { margin: 1.5em 0; padding: 1rem 1.3rem; border-left: 3px solid var(--violet); background: var(--surface); border-radius: 0 12px 12px 0; color: var(--muted); }
.prose table { width: 100%; border-collapse: collapse; margin: 1.2em 0; font-size: 0.95rem; display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; scrollbar-width: thin; border-radius: 12px; }
.prose table th, .prose table td { min-width: 7.5rem; }
.prose th, .prose td { padding: 0.6rem 0.8rem; border: 1px solid var(--line); text-align: left; vertical-align: top; }
.prose th { background: var(--surface-2); }
.prose code { background: var(--surface-2); padding: 0.1em 0.4em; border-radius: 6px; font-size: 0.92em; overflow-wrap: anywhere; }
.prose pre { margin: 1.2em 0; padding: 1rem 1.1rem; background: var(--surface-2); border: 1px solid var(--line); border-radius: 12px; overflow-x: auto; -webkit-overflow-scrolling: touch; scrollbar-width: thin; font-size: 0.9rem; line-height: 1.55; max-width: 100%; }
.prose pre code { background: none; padding: 0; font-size: inherit; white-space: pre; overflow-wrap: normal; }
.prose figure { margin: 1.5em 0; }
.prose figcaption { font-size: 0.85rem; color: var(--muted); margin-top: 0.4rem; }
.prose .callout { padding: 1rem 1.3rem; border-radius: 14px; background: linear-gradient(135deg, rgba(34,211,238,0.1), rgba(139,92,246,0.1)); border: 1px solid var(--line); margin: 1.5em 0; }
.prose .callout p:last-child { margin-bottom: 0; }
.home-prose { font-size: 1rem; }
.home-prose h2 { font-size: 1.35rem; margin-top: 1.6em; }
.home-prose h2:first-child { margin-top: 0; }
.updated-note { margin-top: 3rem; padding-top: 1rem; border-top: 1px solid var(--line); color: var(--muted); font-size: 0.9rem; }

.guide-links { list-style: none; padding: 0 !important; display: grid; gap: 0.7rem; }
.guide-links li { padding: 0.9rem 1.1rem; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); display: grid; gap: 0.2rem; }
.guide-links a { font-weight: 650; }
.guide-links span { color: var(--muted); font-size: 0.92rem; }

/* faq */
.faq { display: grid; gap: 0.7rem; }
.faq details { border: 1px solid var(--line); border-radius: 14px; background: var(--surface); padding: 0 1.2rem; transition: background .25s; }
.faq details[open] { background: var(--surface-2); }
.faq summary { cursor: pointer; font-weight: 650; padding: 1rem 2rem 1rem 0; list-style: none; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 0; top: 50%; transform: translateY(-50%); color: var(--cyan); font-size: 1.4rem; font-weight: 400; transition: transform .25s; }
.faq details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq details p { color: var(--muted); padding-bottom: 1.1rem; margin: 0; }

/* platform switcher */
.platform-switcher { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 1rem auto 1.5rem; }
.chip { padding: 0.45rem 0.95rem; border-radius: 999px; border: 1px solid var(--line); color: var(--muted); font-size: 0.88rem; font-weight: 600; background: var(--surface); }
.chip:hover { text-decoration: none; color: var(--text); }
.chip.active { background: var(--accent-grad); color: #07101f; border-color: transparent; }

/* topic hubs */
.topic-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.4rem; perspective: 1200px; }
.topic-card { position: relative; display: flex; flex-direction: column; color: var(--text); background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transform-style: preserve-3d; transition: transform .35s ease, box-shadow .35s ease, border-color .35s; will-change: transform; }
.topic-card:hover { text-decoration: none; box-shadow: var(--shadow); }
.topic-cyan:hover { border-color: rgba(34, 211, 238, 0.55); }
.topic-violet:hover { border-color: rgba(139, 92, 246, 0.55); }
.topic-amber:hover { border-color: rgba(251, 191, 36, 0.55); }
.topic-media { aspect-ratio: 16 / 10; overflow: hidden; background: var(--bg-3); }
.topic-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.topic-card:hover .topic-media img { transform: scale(1.05); }
.topic-body { padding: 1.2rem 1.3rem 1.4rem; transform: translateZ(20px); display: flex; flex-direction: column; gap: 0.4rem; }
.topic-body h3 { margin: 0.2rem 0 0; font-size: 1.35rem; }
.topic-body p { color: var(--muted); font-size: 0.95rem; margin: 0; }
.topic-links { list-style: none; padding: 0.6rem 0 0.4rem; margin: 0; display: grid; gap: 0.3rem; font-size: 0.88rem; color: var(--muted); }
.topic-links li { padding-left: 1.1rem; position: relative; }
.topic-links li::before { content: ""; position: absolute; left: 0; top: 0.5em; width: 6px; height: 6px; border-radius: 50%; background: var(--accent-grad); }
.topic-cyan .card-kicker { color: var(--cyan); }
.topic-amber .card-kicker { color: var(--amber); }
.topic-switch { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1.2rem; }
.topic-main { min-width: 0; }
.topic-group { margin-bottom: 3rem; }
.topic-group h2 { font-size: 1.5rem; margin-bottom: 1.2rem; padding-bottom: 0.6rem; border-bottom: 1px solid var(--line); }
.topic-page .article-layout { grid-template-columns: 240px minmax(0, 900px); }
.topic-page .card-grid { grid-template-columns: repeat(2, 1fr); }
.topic-page .card-media { aspect-ratio: 16 / 9; }
.topic-page .prose { max-width: 760px; }

/* footer */
.site-footer { border-top: 1px solid var(--line); margin-top: 3rem; padding: 3rem 0 2rem; background: var(--bg-2); }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 0.9fr 0.9fr 0.7fr; gap: 2rem; }
.footer-about p { color: var(--muted); font-size: 0.92rem; margin-top: 1rem; }
.footer-h { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--muted); }
.site-footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.4rem; font-size: 0.92rem; }
.site-footer ul a { color: var(--text); }
.footer-bottom { margin-top: 2rem; padding-top: 1.2rem; border-top: 1px solid var(--line); color: var(--muted); font-size: 0.82rem; }

/* onion / clearnet link cards */
.link-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.2rem; margin: 2rem 0 2.5rem; }
.link-card { display: flex; flex-direction: column; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.link-card-media { aspect-ratio: 16 / 10; background: var(--bg-3); overflow: hidden; }
.link-card-media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.link-card-body { padding: 1.1rem 1.2rem 1.3rem; display: flex; flex-direction: column; gap: 0.6rem; }
.link-card-body h3 { margin: 0; font-size: 1.15rem; }
.link-card-body p { margin: 0; color: var(--muted); font-size: 0.97rem; }
.link-addr { display: flex; flex-direction: column; gap: 0.45rem; margin: 0; }
.link-addr a { display: inline-flex; align-items: center; gap: 0.45rem; padding: 0.5rem 0.7rem; border-radius: 10px; background: var(--surface-2); border: 1px solid var(--line); font-size: 0.86rem; overflow-wrap: anywhere; }
.link-addr a.tor { border-color: rgba(139, 92, 246, 0.5); }
.link-addr .tag { font-size: 0.7rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); flex: none; }
.link-empty { color: var(--muted); }

/* reveal on scroll */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
.no-js .reveal { opacity: 1; transform: none; }

/* responsive */
@media (max-width: 1080px) {
  .site-nav a { padding: 0.5rem 0.55rem; font-size: 0.9rem; }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .topic-grid { grid-template-columns: 1fr; }
  .topic-page .article-layout { grid-template-columns: minmax(0, 900px); }
  .platform-grid { grid-template-columns: repeat(3, 1fr); }
  .article-layout { grid-template-columns: minmax(0, 760px); }
  .toc-side { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 900px) {
  .hero-grid, .article-hero-grid, .notice-grid { grid-template-columns: 1fr; }
  .hero-visual { max-width: 400px; }
  .hero-badge.b1 { left: 0; } .hero-badge.b2 { right: 0; } .hero-badge.b3 { left: 0; top: 70%; }
  .burger { display: block; }
  .nav-quick { display: inline-block; }
  .header-inner { gap: 0.6rem; }
  .site-nav { position: absolute; top: 100%; left: 0; right: 0; background: var(--bg-2); border-bottom: 1px solid var(--line); display: none; padding: 0.6rem 1.25rem 1.2rem; max-height: calc(100vh - 68px); overflow-y: auto; }
  .site-nav.open { display: block; }
  .site-nav ul { flex-direction: column; align-items: stretch; gap: 0; }
  .site-nav li.has-menu { flex-wrap: wrap; }
  .site-nav li.has-menu > a { flex: 1; }
  .submenu { position: static; width: 100%; box-shadow: none; border: 0; background: transparent; padding-left: 1rem !important; }
  .has-menu:hover .submenu { display: none !important; }
  .has-menu.open .submenu, .has-menu:focus-within .submenu { display: flex !important; }
  .sub-toggle { width: 44px; height: 44px; }
  .sub-toggle::after { left: 17px; top: 15px; }
}
@media (max-width: 640px) {
  body { font-size: 16px; }
  .card-grid, .platform-grid, .topic-page .card-grid, .link-grid { grid-template-columns: 1fr; }
  .notice { grid-template-columns: 1fr; }
  .notice-cube { margin-inline: auto; }
  .index-list { grid-template-columns: 1fr; }
  .recent-list li { grid-template-columns: 1fr; }
  .recent-list span { grid-column: 1; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 1.2rem; }
  .hero-badge { font-size: 0.75rem; }
  .prose { font-size: 1rem; }
  .float3d { animation: none; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  .reveal { opacity: 1; transform: none; }
}