/* =========================================================
   Rezxis Network — shared styles
   Direction: minimal & clean, with a "network" signature
   ========================================================= */

:root {
  /* palette — cool paper, deep ink, one signal accent */
  --paper:      #F5F6F8;
  --paper-2:    #FFFFFF;
  --ink:        #15171C;
  --ink-soft:   #565C68;
  --ink-faint:  #8A909C;
  --line:       #E4E7EC;
  --line-2:     #EEF0F3;
  --signal:     #1668E3;   /* Rezxis blue */
  --signal-ink: #0E4DAE;
  --signal-tint:#E6EFFC;

  /* type */
  --display: 'Space Grotesk', 'Zen Kaku Gothic New', sans-serif;
  --body:    'Zen Kaku Gothic New', 'Space Grotesk', sans-serif;
  --mono:    'Space Mono', ui-monospace, monospace;

  /* scale */
  --step--1: clamp(0.78rem, 0.75rem + 0.15vw, 0.86rem);
  --step-0:  clamp(0.95rem, 0.9rem + 0.25vw, 1.05rem);
  --step-1:  clamp(1.2rem, 1.1rem + 0.5vw, 1.5rem);
  --step-2:  clamp(1.6rem, 1.35rem + 1.1vw, 2.4rem);
  --step-3:  clamp(2.3rem, 1.8rem + 2.4vw, 4.2rem);

  --maxw: 1180px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --radius: 14px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--body);
  font-size: var(--step-0);
  line-height: 1.75;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* ---------- layout ---------- */
.wrap { max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: clamp(3.5rem, 8vw, 7rem); }
.section--tight { padding-block: clamp(2.5rem, 5vw, 4rem); }

/* ---------- eyebrow / labels ---------- */
.eyebrow {
  font-family: var(--mono);
  font-size: var(--step--1);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--signal);
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  margin: 0 0 1.1rem;
}
.eyebrow::before {
  content: "";
  width: 22px; height: 1px;
  background: var(--signal);
  display: inline-block;
}

/* ---------- headings ---------- */
h1, h2, h3 { font-family: var(--display); font-weight: 500; line-height: 1.12; letter-spacing: -0.01em; margin: 0; }
.h-xl { font-size: var(--step-3); font-weight: 700; letter-spacing: -0.03em; }
.h-lg { font-size: var(--step-2); font-weight: 600; }
.h-md { font-size: var(--step-1); }
.lead { font-size: var(--step-1); color: var(--ink-soft); font-family: var(--body); line-height: 1.7; font-weight: 400; }
p { margin: 0 0 1.1rem; }
p:last-child { margin-bottom: 0; }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--paper) 86%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 68px;
}
.brand {
  font-family: var(--display); font-weight: 700; letter-spacing: 0.02em;
  font-size: 1.02rem; display: inline-flex; align-items: center; gap: 0.65rem;
}
.brand .dot {
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 4px var(--signal-tint);
}
.brand-mark { width: 26px; height: 26px; flex: none; display: block; }
.nav-links { display: flex; gap: clamp(1rem, 2.5vw, 2.2rem); align-items: center; }
.nav-links a {
  font-family: var(--mono); font-size: var(--step--1);
  letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--ink-soft); position: relative; padding: 0.4rem 0;
  transition: color .2s ease;
}
.nav-links a:hover { color: var(--ink); }
.nav-links a[aria-current="page"] { color: var(--ink); }
.nav-links a[aria-current="page"]::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -2px;
  height: 2px; background: var(--signal);
}
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); margin: 4px 0; transition: .25s; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.55rem;
  font-family: var(--mono); font-size: var(--step--1);
  letter-spacing: 0.06em; text-transform: uppercase;
  padding: 0.85rem 1.5rem; border-radius: 999px;
  border: 1px solid var(--ink); background: var(--ink); color: var(--paper);
  transition: transform .18s ease, background .2s ease, color .2s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn--ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn--ghost:hover { border-color: var(--ink); background: var(--paper-2); }
.btn .arrow { transition: transform .2s ease; }
.btn:hover .arrow { transform: translateX(3px); }

/* ---------- hero ---------- */
.hero { padding-block: clamp(3rem, 7vw, 6rem) clamp(3rem, 6vw, 5rem); }
.hero-grid {
  display: grid; grid-template-columns: 1.05fr 0.95fr; gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}
.hero h1 { margin-bottom: 1.5rem; }
.hero .lead { max-width: 34ch; margin-bottom: 2rem; }
.hero-actions { display: flex; gap: 0.9rem; flex-wrap: wrap; }

/* ---------- network signature (SVG) ---------- */
.netgraph { width: 100%; height: auto; overflow: visible; }
.netgraph .edge {
  stroke: var(--signal); stroke-width: 1; fill: none; opacity: 0.35;
  stroke-dasharray: 240; stroke-dashoffset: 240;
  animation: draw 1.4s ease forwards;
}
.netgraph .node-dot { fill: var(--paper-2); stroke: var(--ink); stroke-width: 1.5; }
.netgraph .node-core { fill: var(--signal); stroke: none; }
.netgraph .node-label {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.05em;
  fill: var(--ink); text-transform: uppercase;
}
.netgraph .node {
  opacity: 0; transform-box: fill-box; transform-origin: center;
  animation: pop .5s ease forwards;
}
.netgraph .pulse { fill: var(--signal); opacity: 0.25; animation: pulse 3s ease-in-out infinite; }

@keyframes draw { to { stroke-dashoffset: 0; } }
@keyframes pop { from { opacity: 0; transform: scale(0.8); } to { opacity: 1; transform: scale(1); } }
@keyframes pulse { 0%,100% { r: 6; opacity: 0.25; } 50% { r: 13; opacity: 0; } }

/* ---------- generic reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- section header ---------- */
.section-head { max-width: 60ch; margin-bottom: clamp(2rem, 4vw, 3rem); }

/* ---------- portal cards (home) ---------- */
.portal { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.portal a {
  background: var(--paper-2); padding: clamp(1.6rem, 3vw, 2.4rem);
  display: flex; flex-direction: column; gap: 0.5rem; min-height: 200px;
  transition: background .2s ease;
}
.portal a:hover { background: color-mix(in srgb, var(--signal-tint) 55%, var(--paper-2)); }
.portal .idx { font-family: var(--mono); font-size: var(--step--1); color: var(--ink-faint); letter-spacing: 0.1em; }
.portal .p-title { font-family: var(--display); font-size: var(--step-1); font-weight: 600; margin-top: auto; }
.portal .p-desc { color: var(--ink-soft); font-size: var(--step--1); }
.portal .p-go { font-family: var(--mono); font-size: var(--step--1); color: var(--signal); letter-spacing: 0.08em; }

/* ---------- member grid ---------- */
.members { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(1rem, 2vw, 1.6rem); }
.member {
  background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.6rem; display: flex; flex-direction: column; gap: 0.9rem;
  transition: border-color .2s ease, transform .2s ease;
}
.member:hover { border-color: var(--signal); transform: translateY(-3px); }
.member .avatar {
  width: 72px; height: 72px; border-radius: 50%; overflow: hidden;
  background: linear-gradient(135deg, var(--signal-tint), var(--paper));
  border: 1px solid var(--line); display: grid; place-items: center;
  font-family: var(--display); font-weight: 700; color: var(--signal); font-size: 1.4rem;
}
.member .avatar img { width: 100%; height: 100%; object-fit: cover; display: block; }
.member .m-role { font-family: var(--mono); font-size: var(--step--1); letter-spacing: 0.08em; text-transform: uppercase; color: var(--signal); }
.member .m-name { font-family: var(--display); font-size: var(--step-1); font-weight: 600; }
.member .m-bio { color: var(--ink-soft); font-size: var(--step--1); }
.member .m-links { display: flex; gap: 0.8rem; margin-top: auto; padding-top: 0.4rem; }
.member .m-links a { font-family: var(--mono); font-size: var(--step--1); color: var(--ink-soft); border-bottom: 1px solid var(--line); }
.member .m-links a:hover { color: var(--signal); border-color: var(--signal); }

/* ---------- works ---------- */
.works { display: grid; grid-template-columns: repeat(2, 1fr); gap: clamp(1.2rem, 2.5vw, 2rem); }
.work { background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: transform .2s ease, border-color .2s ease; }
.work:hover { transform: translateY(-3px); border-color: var(--signal); }
.work .embed { aspect-ratio: 16 / 9; background: var(--line-2); position: relative; display: grid; place-items: center; }
.work .embed iframe { width: 100%; height: 100%; border: 0; }
.work .embed .placeholder { font-family: var(--mono); font-size: var(--step--1); color: var(--ink-faint); letter-spacing: 0.08em; text-align: center; padding: 1rem; }
.work .w-body { padding: 1.3rem 1.4rem 1.5rem; }
.work .w-tag { font-family: var(--mono); font-size: var(--step--1); letter-spacing: 0.08em; text-transform: uppercase; color: var(--signal); }
.work .w-title { font-family: var(--display); font-size: var(--step-1); font-weight: 600; margin: 0.3rem 0 0.4rem; }
.work .w-meta { color: var(--ink-soft); font-size: var(--step--1); }

/* ---------- info rows (about / contact) ---------- */
.rows { border-top: 1px solid var(--line); }
.row {
  display: grid; grid-template-columns: 200px 1fr; gap: 1.5rem;
  padding: 1.6rem 0; border-bottom: 1px solid var(--line);
}
.row .row-k { font-family: var(--mono); font-size: var(--step--1); letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-faint); }
.row .row-v { color: var(--ink); }
.row .row-v a { color: var(--signal); border-bottom: 1px solid var(--signal-tint); }
.row .row-v a:hover { border-color: var(--signal); }

/* ---------- link list (contact / sns) ---------- */
.link-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.link-list a {
  background: var(--paper-2); padding: 1.4rem 1.6rem;
  display: flex; align-items: center; justify-content: space-between;
  font-family: var(--display); font-weight: 500; transition: background .2s ease;
}
.link-list a:hover { background: color-mix(in srgb, var(--signal-tint) 55%, var(--paper-2)); }
.link-list .ll-arrow { font-family: var(--mono); color: var(--signal); }

/* ---------- callout ---------- */
.callout {
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--paper-2); padding: clamp(2rem, 4vw, 3.2rem);
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1.5rem;
}
.callout .h-md { max-width: 30ch; }

/* ---------- footer ---------- */
.site-footer { border-top: 1px solid var(--line); background: var(--paper-2); }
.footer-grid { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 2rem; padding-block: clamp(2.5rem, 5vw, 4rem); }
.footer-brand { font-family: var(--display); font-weight: 700; font-size: 1.3rem; letter-spacing: 0.02em; }
.footer-brand p { font-family: var(--body); font-weight: 400; font-size: var(--step--1); color: var(--ink-soft); max-width: 32ch; margin-top: 0.6rem; }
.footer-nav { display: flex; gap: 3rem; flex-wrap: wrap; }
.footer-col h4 { font-family: var(--mono); font-size: var(--step--1); letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint); margin: 0 0 0.9rem; font-weight: 400; }
.footer-col a { display: block; color: var(--ink-soft); font-size: var(--step--1); padding: 0.28rem 0; transition: color .2s; }
.footer-col a:hover { color: var(--signal); }
.footer-bottom { border-top: 1px solid var(--line); padding-block: 1.4rem; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 0.5rem; }
.footer-bottom small { font-family: var(--mono); font-size: var(--step--1); color: var(--ink-faint); letter-spacing: 0.04em; }

/* ---------- responsive ---------- */
@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { order: -1; max-width: 460px; }
  .members { grid-template-columns: repeat(2, 1fr); }
  .row { grid-template-columns: 1fr; gap: 0.3rem; }
}
@media (max-width: 620px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: absolute; top: 68px; left: 0; right: 0;
    flex-direction: column; align-items: flex-start; gap: 0;
    background: var(--paper-2); border-bottom: 1px solid var(--line);
    padding: 0.5rem var(--gutter) 1rem; display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { width: 100%; padding: 0.7rem 0; border-bottom: 1px solid var(--line-2); }
  .portal, .works, .link-list { grid-template-columns: 1fr; }
  .members { grid-template-columns: 1fr; }
  .callout { flex-direction: column; align-items: flex-start; }
}

/* ---------- accessibility ---------- */
:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; border-radius: 3px; }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
  .netgraph .edge { stroke-dashoffset: 0; }
  .netgraph .node { opacity: 1; }
}

/* =========================================================
   HOME hero — background photo + glass + parallax (index only)
   ========================================================= */
.hero--photo {
  position: relative;
  min-height: min(92vh, 800px);
  display: flex; align-items: center;
  padding-block: clamp(4rem, 9vw, 7rem);
  overflow: hidden;
  isolation: isolate;
}
/* background layer — swap the gradient for a real photo via .hero-bg { background-image: url(...) } */
/* background: multiple cross-fading photo layers — swap each background-image for a real photo */
.hero-slides { position: absolute; inset: -8% -3%; z-index: -3; }
.hero-slide {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  opacity: 0; transform: scale(1.06); filter: blur(3px); /* 若干ぼかし */
  will-change: opacity, transform;
}
.hero-slide:first-child { opacity: 1; } /* visible before JS runs / reduced motion */
/* real photos — swap these background-image urls to change */
.hero-slide.s1 { background-color:#0a1830; background-image: url("../images/hero1.jpg"); background-position: center 42%; }
.hero-slide.s2 { background-color:#07131f; background-image: url("../images/hero2.jpg"); }

/* constant tint for legibility + faint voxel/dot grid (blocks + network nodes) */
.hero-tint { position: absolute; inset: 0; z-index: -2;
  background: linear-gradient(180deg, rgba(8,18,40,0.5) 0%, rgba(5,11,26,0.72) 100%); }
.hero-tint::after { content:""; position:absolute; inset:0;
  background-image: radial-gradient(rgba(150,185,255,0.15) 1px, transparent 1.4px);
  background-size: 26px 26px;
  mask-image: radial-gradient(120% 90% at 60% 30%, #000 30%, transparent 82%);
  -webkit-mask-image: radial-gradient(120% 90% at 60% 30%, #000 30%, transparent 82%); }

/* slide switch indicator dots */
.hero-dots { position: absolute; right: clamp(1rem,3vw,2.4rem); top: 50%; transform: translateY(-50%);
  display: flex; flex-direction: column; gap: 10px; z-index: 1; }
.hero-dots span { width: 7px; height: 7px; border-radius: 50%; background: rgba(255,255,255,0.28); transition: background .3s, transform .3s; }
.hero-dots span.on { background: #6fb0ff; transform: scale(1.35); }

.hero--photo .hero-copy { color: #fff; }
.hero--photo .hero-copy .h-xl { color: #fff; text-shadow: 0 2px 30px rgba(0,0,0,0.25); }
.hero--photo .lead { color: rgba(233,240,252,0.86); }
.hero--photo .eyebrow { color: #9cc4ff; }
.hero--photo .eyebrow::before { background: #9cc4ff; }

/* frosted glass panel behind hero copy */
.hero--photo .hero-copy {
  background: rgba(9,16,34,0.34);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 18px;
  padding: clamp(1.6rem, 3.5vw, 2.6rem);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 20px 60px rgba(4,12,30,0.35);
}
/* hero buttons over photo */
.hero--photo .btn { background: var(--signal); border-color: var(--signal); color: #fff; }
.hero--photo .btn:hover { background: var(--signal-ink); border-color: var(--signal-ink); }
.hero--photo .btn--ghost { background: rgba(255,255,255,0.06); border-color: rgba(255,255,255,0.4); color: #fff; }
.hero--photo .btn--ghost:hover { background: rgba(255,255,255,0.14); border-color: #fff; }

/* scroll cue */
.hero-scroll {
  position: absolute; left: 50%; bottom: 22px; transform: translateX(-50%);
  font-family: var(--mono); font-size: var(--step--1); letter-spacing: 0.18em;
  text-transform: uppercase; color: rgba(233,240,252,0.7);
  display: flex; flex-direction: column; align-items: center; gap: 6px; z-index: 1;
}
.hero-scroll .line { width: 1px; height: 34px; background: linear-gradient(rgba(233,240,252,0.7), transparent); animation: scrollcue 2.2s ease-in-out infinite; }
@keyframes scrollcue { 0%,100% { transform: scaleY(0.4); transform-origin: top; opacity: .4; } 50% { transform: scaleY(1); opacity: 1; } }

/* light variant of the network graph (for use over the photo) */
.netgraph--light .edge { stroke: #a9c9ff; opacity: 0.45; }
.netgraph--light .edge.edge--hot { stroke: #6fb0ff; opacity: 0.85; stroke-width: 1.4; }
.netgraph--light .node-dot { fill: rgba(255,255,255,0.10); stroke: #cfe1ff; stroke-width: 1.4; }
.netgraph--light .node-core { fill: #58a0ff; filter: drop-shadow(0 0 10px rgba(88,160,255,0.7)); }
.netgraph--light .node-label { fill: #e8f0ff; }
.netgraph--light .pulse { fill: #8fc0ff; opacity: 0.4; }

@media (max-width: 620px) {
  .hero--photo .hero-scroll { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  .hero-slide { transform: none !important; }
  .hero-scroll .line { animation: none; }
}

/* =========================================================
   WORKS — per-domain horizontal scroll rows (works page)
   ========================================================= */
.work-row { margin-bottom: clamp(2.4rem, 5vw, 3.8rem); }
.work-row:last-child { margin-bottom: 0; }
.row-head { display: flex; align-items: baseline; gap: 0.7rem; margin-bottom: 1.2rem; }
.row-head h2 { font-family: var(--display); font-size: var(--step-1); font-weight: 600; }
.row-head .en { font-family: var(--mono); font-size: var(--step--1); letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint); }
.row-head .count { margin-left: auto; font-family: var(--mono); font-size: var(--step--1); color: var(--ink-faint); }

.hscroll {
  display: grid; grid-auto-flow: column;
  grid-auto-columns: minmax(280px, 320px);
  gap: clamp(0.9rem, 2vw, 1.4rem);
  overflow-x: auto; overflow-y: hidden;
  scroll-snap-type: x proximity;
  padding: 4px 4px 1rem;              /* room for hover-lift + scrollbar */
  margin: -4px -4px 0;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--line) transparent;
  scroll-behavior: smooth;
}
.hscroll > .work { scroll-snap-align: start; margin: 0; }
.hscroll::-webkit-scrollbar { height: 8px; }
.hscroll::-webkit-scrollbar-track { background: transparent; }
.hscroll::-webkit-scrollbar-thumb { background: var(--line); border-radius: 999px; }
.hscroll::-webkit-scrollbar-thumb:hover { background: var(--ink-faint); }

/* right-edge fade hint (there is more to scroll) */
.hscroll-wrap { position: relative; }
.hscroll-wrap::after {
  content: ""; position: absolute; top: 0; right: 0; bottom: 14px; width: 44px;
  background: linear-gradient(90deg, transparent, var(--paper));
  pointer-events: none; opacity: 0.9;
}

@media (max-width: 620px) {
  .hscroll { grid-auto-columns: 82%; }
  .hscroll-wrap::after { width: 28px; }
}

/* =========================================================
   NEWS / お知らせフィード（news + home feed）
   ========================================================= */
.feed { border-top: 1px solid var(--line); }
.feed-item {
  display: grid; grid-template-columns: 112px 1fr auto; gap: 1.1rem; align-items: start;
  padding: 1.15rem 0.4rem; border-bottom: 1px solid var(--line);
  transition: background .18s ease;
}
.feed-item:hover { background: color-mix(in srgb, var(--signal-tint) 45%, transparent); }
.feed-item .date { font-family: var(--mono); font-size: var(--step--1); color: var(--ink-faint); letter-spacing: .04em; white-space: nowrap; padding-top: 2px; }
.feed-item .f-main { min-width: 0; }
.feed-item .f-top { display: flex; align-items: center; gap: .6rem; margin-bottom: .2rem; flex-wrap: wrap; }
.feed-item .f-title { font-family: var(--display); font-weight: 600; font-size: var(--step-0); }
.feed-item .f-ex { color: var(--ink-soft); font-size: var(--step--1); }
.feed-item .f-go { font-family: var(--mono); font-size: var(--step--1); color: var(--signal); white-space: nowrap; padding-top: 2px; }

.chip { display: inline-block; font-family: var(--mono); font-size: 0.66rem; letter-spacing: .08em; text-transform: uppercase; padding: .22em .62em; border-radius: 999px; border: 1px solid var(--line); color: var(--ink-soft); }
.chip--notice { background: var(--signal-tint); border-color: transparent; color: var(--signal-ink); }
.chip--post { background: var(--paper-2); }

.filters { display: flex; gap: .5rem; margin-bottom: 1.6rem; flex-wrap: wrap; }
.filters a { font-family: var(--mono); font-size: var(--step--1); letter-spacing: .06em; text-transform: uppercase; padding: .5em 1em; border-radius: 999px; border: 1px solid var(--line); color: var(--ink-soft); transition: border-color .2s, color .2s; }
.filters a.on, .filters a:hover { border-color: var(--signal); color: var(--signal); }

.feed-more { margin-top: 1.4rem; }

/* single post */
.post-head { max-width: 70ch; margin-bottom: 2rem; }
.post-meta { display: flex; gap: .8rem; align-items: center; margin-bottom: 1rem; font-family: var(--mono); font-size: var(--step--1); color: var(--ink-faint); }
.post-body { max-width: 70ch; }
.post-body h2 { font-family: var(--display); font-size: var(--step-1); font-weight: 600; margin: 2.2rem 0 .8rem; }
.post-body p { margin-bottom: 1.1rem; }
.post-body a { color: var(--signal); border-bottom: 1px solid var(--signal-tint); }
.post-back { display: inline-block; margin-top: 2.4rem; font-family: var(--mono); font-size: var(--step--1); letter-spacing: .06em; text-transform: uppercase; color: var(--signal); }

@media (max-width: 620px) {
  .feed-item { grid-template-columns: 1fr; gap: .35rem; }
  .feed-item .f-go { display: none; }
}