/* 首輪通信 — kubiwa.net */
:root {
  --bg: #0b0b0d;
  --bg-2: #131317;
  --bg-3: #1b1b21;
  --fg: #eceae4;
  --muted: #8f8d87;
  --line: #26262d;
  --accent: #ff2e63;
  --accent-soft: rgba(255, 46, 99, .14);
  --brass: #c9a45c;
  --radius: 14px;
  --wrap: 1180px;
  --font-body: "Zen Kaku Gothic New", "Hiragino Sans", "Yu Gothic", system-ui, sans-serif;
  --font-display: "Shippori Mincho B1", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Consolas, monospace;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
  letter-spacing: .02em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  word-break: auto-phrase; /* break Japanese between phrases, not mid-word */
}
h1, h2, h3, .t, .title, .big { text-wrap: pretty; }
/* film grain */
body::before {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none; z-index: 100;
  opacity: .05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 clamp(16px, 4vw, 40px); }
.mono { font-family: var(--font-mono); font-size: .78em; letter-spacing: .08em; }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  background: rgba(11, 11, 13, .72);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; font-family: var(--font-display); font-weight: 800; font-size: 1.15rem; letter-spacing: .12em; }
.brand svg { width: 26px; height: 26px; color: var(--brass); flex: none; }
.nav { display: flex; gap: clamp(14px, 3vw, 32px); }
.nav a { font-family: var(--font-mono); font-size: .74rem; letter-spacing: .18em; color: var(--muted); text-transform: uppercase; position: relative; padding: 6px 0; transition: color .2s; }
.nav a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: 0; height: 1px; background: var(--accent); transition: right .25s ease; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--fg); }
.nav a:hover::after, .nav a[aria-current="page"]::after { right: 0; }

/* ---------- hero ---------- */
.hero { position: relative; min-height: min(92vh, 860px); display: grid; align-items: center; overflow: hidden; border-bottom: 1px solid var(--line); }
.hero::after { /* red glow */
  content: ""; position: absolute; width: 70vmax; height: 70vmax; right: -25vmax; top: -20vmax;
  background: radial-gradient(closest-side, rgba(255, 46, 99, .22), transparent 70%);
  pointer-events: none;
}
.hero-ring { position: absolute; right: clamp(-260px, -12vw, -60px); top: 50%; width: min(78vmin, 760px); transform: translateY(-50%); color: var(--brass); opacity: .9; }
.hero-ring svg { width: 100%; height: auto; animation: spin 90s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.hero-inner { position: relative; z-index: 2; padding-top: 96px; padding-bottom: 72px; }
.hero-inner > * { max-width: 560px; }
.hero .sub { text-shadow: 0 0 18px var(--bg), 0 0 6px var(--bg); }
.eyebrow { display: inline-flex; align-items: center; gap: 10px; font-family: var(--font-mono); font-size: .75rem; letter-spacing: .3em; color: var(--accent); text-transform: uppercase; }
.eyebrow::before { content: ""; width: 34px; height: 1px; background: currentColor; }
.hero h1 {
  margin: 22px 0 18px;
  font-family: var(--font-display); font-weight: 800;
  font-size: clamp(3.6rem, 13vw, 9.5rem); line-height: .98; letter-spacing: .04em;
}
.hero h1 .dot { color: var(--accent); }
.hero .lead { font-size: clamp(1.05rem, 2.3vw, 1.35rem); color: var(--fg); margin: 0 0 6px; }
.hero .sub { color: var(--muted); margin: 0; font-size: .95rem; }
.hero-cta { margin-top: 40px; display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 13px 22px; border-radius: 999px; border: 1px solid var(--line);
  font-size: .9rem; font-weight: 700; transition: background .2s, border-color .2s, transform .2s;
}
.btn:hover { border-color: var(--fg); transform: translateY(-1px); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { background: #ff4d79; }
.btn svg { width: 16px; height: 16px; }
.scroll-hint { position: absolute; left: 50%; bottom: 26px; transform: translateX(-50%); font-family: var(--font-mono); font-size: .68rem; letter-spacing: .3em; color: var(--muted); display: flex; flex-direction: column; align-items: center; gap: 10px; }
.scroll-hint::after { content: ""; width: 1px; height: 38px; background: linear-gradient(var(--muted), transparent); animation: drip 2.2s ease-in-out infinite; }
@keyframes drip { 0% { transform: scaleY(0); transform-origin: top; } 50% { transform: scaleY(1); transform-origin: top; } 51% { transform-origin: bottom; } 100% { transform: scaleY(0); transform-origin: bottom; } }

/* ---------- sections ---------- */
.section { padding: clamp(72px, 10vw, 128px) 0; border-bottom: 1px solid var(--line); }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin-bottom: 40px; flex-wrap: wrap; }
.section-head .num { font-family: var(--font-mono); color: var(--accent); font-size: .78rem; letter-spacing: .2em; }
.section-head h2 { margin: 6px 0 0; font-family: var(--font-display); font-weight: 800; font-size: clamp(2rem, 5vw, 3.2rem); line-height: 1.1; letter-spacing: .06em; }
.section-head h2 small { display: block; font-family: var(--font-body); font-weight: 400; font-size: .9rem; color: var(--muted); letter-spacing: .1em; margin-top: 8px; }
.more { font-family: var(--font-mono); font-size: .78rem; letter-spacing: .14em; color: var(--muted); display: inline-flex; gap: 8px; align-items: center; white-space: nowrap; transition: color .2s, gap .2s; }
.more svg { width: 14px; height: 14px; }
.more:hover { color: var(--accent); gap: 12px; }

/* ---------- works grid ---------- */
.works { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: clamp(14px, 2vw, 24px); }
.works.featured { grid-template-columns: repeat(4, minmax(0, 1fr)); }
@media (max-width: 1000px) { .works.featured { grid-template-columns: repeat(3, minmax(0, 1fr)); } .works.featured .work:nth-child(n+7) { display: none; } }
.work { position: relative; display: block; }
.work .thumb { position: relative; aspect-ratio: 3 / 4; overflow: hidden; border-radius: var(--radius); background: var(--bg-3); border: 1px solid var(--line); }
.work .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s cubic-bezier(.2, .7, .2, 1), filter .4s; filter: saturate(.92); }
.work:hover .thumb img { transform: scale(1.06); filter: saturate(1.1); }
.work .thumb::after { content: ""; position: absolute; inset: 0; border-radius: inherit; box-shadow: inset 0 0 0 0 var(--accent); transition: box-shadow .25s; }
.work:hover .thumb::after { box-shadow: inset 0 0 0 2px var(--accent); }
.work .meta { padding: 12px 2px 0; }
.work .title { font-size: .92rem; font-weight: 700; line-height: 1.55; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.work .date { color: var(--muted); }
.chips { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 6px; }
.chip { font-size: .7rem; padding: 2px 9px; border-radius: 999px; border: 1px solid var(--line); color: var(--muted); white-space: nowrap; }
.chip.accent { color: var(--accent); border-color: rgba(255, 46, 99, .4); background: var(--accent-soft); }

.filters { display: flex; flex-wrap: wrap; gap: 8px; margin: -12px 0 32px; }
.filters button {
  font: inherit; font-size: .85rem; cursor: pointer;
  padding: 7px 16px; border-radius: 999px; border: 1px solid var(--line); background: transparent; color: var(--muted);
  transition: all .2s;
}
.filters button:hover { color: var(--fg); border-color: var(--fg); }
.filters button[aria-pressed="true"] { background: var(--fg); color: var(--bg); border-color: var(--fg); }
.filters .count { opacity: .6; margin-left: 4px; font-family: var(--font-mono); font-size: .75em; }

/* ---------- news list ---------- */
.news { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.news li a {
  display: grid; grid-template-columns: 120px 1fr 24px; gap: 20px; align-items: center;
  padding: 20px 4px; border-bottom: 1px solid var(--line); transition: background .2s, padding .2s;
}
.news li a:hover { background: var(--bg-2); padding-left: 14px; }
.news .date { color: var(--muted); }
.news .t { font-weight: 700; line-height: 1.6; }
.news .chips { margin-top: 4px; }
.news .arrow { color: var(--muted); transition: transform .2s, color .2s; }
.news li a:hover .arrow { color: var(--accent); transform: translateX(4px); }
.year-head { font-family: var(--font-mono); color: var(--accent); letter-spacing: .2em; font-size: .8rem; margin: 48px 0 8px; }
.year-head:first-child { margin-top: 0; }

/* ---------- about ---------- */
.about { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr); gap: clamp(32px, 6vw, 80px); align-items: start; }
.about .card { background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.about .card dl { margin: 0; display: grid; grid-template-columns: auto 1fr; gap: 10px 20px; font-size: .92rem; }
.about .card dt { color: var(--muted); font-family: var(--font-mono); font-size: .75rem; letter-spacing: .12em; padding-top: 3px; }
.about .card dd { margin: 0; }
.about p { margin: 0 0 1.1em; }
.about .big { font-family: var(--font-display); font-size: clamp(1.4rem, 3vw, 2rem); line-height: 1.6; font-weight: 800; margin-bottom: 1em; }
.about .big em { font-style: normal; color: var(--accent); }

/* ---------- links ---------- */
.links { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 14px; }
.link-card {
  display: flex; flex-direction: column; gap: 4px; padding: 20px 22px; border-radius: var(--radius);
  background: var(--bg-2); border: 1px solid var(--line); transition: border-color .2s, transform .2s, background .2s;
}
.link-card:hover { border-color: var(--accent); transform: translateY(-2px); background: var(--bg-3); }
.link-card .k { font-family: var(--font-mono); font-size: .7rem; letter-spacing: .16em; color: var(--muted); text-transform: uppercase; }
.link-card .v { font-weight: 700; display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.link-card .v svg { width: 15px; height: 15px; color: var(--muted); flex: none; }
.link-card:hover .v svg { color: var(--accent); }

/* ---------- article ---------- */
.page-head { padding: clamp(56px, 9vw, 104px) 0 clamp(28px, 5vw, 48px); border-bottom: 1px solid var(--line); }
.page-head h1 { margin: 14px 0 12px; font-family: var(--font-display); font-weight: 800; font-size: clamp(1.7rem, 4.4vw, 3rem); line-height: 1.35; letter-spacing: .03em; }
.page-head .meta { color: var(--muted); display: flex; gap: 14px; align-items: center; flex-wrap: wrap; }
.page-head .lead-sm { color: var(--muted); margin: 0; }
.page-head .lead-sm a { color: var(--accent); }
.crumbs { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .14em; color: var(--muted); }
.crumbs a:hover { color: var(--accent); }
.article { max-width: 760px; margin: 0 auto; padding: clamp(40px, 6vw, 72px) 0 clamp(64px, 9vw, 112px); }
.article .hero-img { margin: 0 0 40px; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); }
.prose { font-size: 1.02rem; }
.prose > :first-child { margin-top: 0; }
.prose p { margin: 0 0 1.4em; }
.prose a { color: var(--accent); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; word-break: break-all; }
.prose h2, .prose h3, .prose h4 { font-family: var(--font-display); line-height: 1.5; margin: 2.2em 0 .8em; }
.prose h2 { font-size: 1.5rem; } .prose h3 { font-size: 1.25rem; }
.prose img { border-radius: 10px; margin: 1.6em auto; }
.prose figure { margin: 1.6em 0; }
.prose figcaption { color: var(--muted); font-size: .85rem; text-align: center; margin-top: -1em; }
.prose blockquote { margin: 1.6em 0; padding: 4px 0 4px 20px; border-left: 2px solid var(--accent); color: var(--muted); }
.prose ul, .prose ol { padding-left: 1.4em; margin: 0 0 1.4em; }
.prose table { width: 100%; border-collapse: collapse; font-size: .92rem; margin: 1.6em 0; display: block; overflow-x: auto; }
.prose th, .prose td { border: 1px solid var(--line); padding: 8px 12px; text-align: left; }
.prose iframe { width: 100%; aspect-ratio: 16 / 9; height: auto; border: 0; border-radius: 10px; }
.prose .alignleft { float: left; margin: .4em 1.4em 1em 0; max-width: 50%; }
.prose .alignright { float: right; margin: .4em 0 1em 1.4em; max-width: 50%; }
.prose .aligncenter { margin-left: auto; margin-right: auto; }
.prose::after { content: ""; display: block; clear: both; }
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 64px; }
.pager a { padding: 18px 20px; border: 1px solid var(--line); border-radius: var(--radius); transition: border-color .2s; }
.pager a:hover { border-color: var(--accent); }
.pager .k { font-family: var(--font-mono); font-size: .7rem; letter-spacing: .14em; color: var(--muted); }
.pager .t { font-weight: 700; font-size: .92rem; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.pager .next { text-align: right; grid-column: 2; }

.work-detail { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(28px, 5vw, 64px); padding: clamp(40px, 6vw, 72px) 0 clamp(64px, 9vw, 112px); align-items: start; }
.work-detail .cover { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); position: sticky; top: 88px; }

/* ---------- footer ---------- */
.site-footer { padding: 56px 0 40px; color: var(--muted); font-size: .85rem; }
.site-footer .wrap { display: grid; gap: 22px; }
.site-footer .row { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; align-items: center; }
.site-footer .brand { color: var(--fg); }
.site-footer nav { display: flex; gap: 20px; flex-wrap: wrap; }
.site-footer nav a:hover { color: var(--fg); }
.r18 { display: inline-flex; align-items: center; gap: 10px; }
.r18 b { font-family: var(--font-mono); font-size: .7rem; letter-spacing: .1em; color: var(--accent); border: 1px solid var(--accent); border-radius: 4px; padding: 1px 6px; }

/* ---------- age gate ---------- */
.gate { position: fixed; inset: 0; z-index: 200; display: grid; place-items: center; padding: 16px; background: rgba(5, 5, 7, .86); backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px); }
.gate[hidden] { display: none; }
.gate .box { max-width: 440px; width: 100%; background: var(--bg-2); border: 1px solid var(--line); border-radius: 20px; padding: 36px 30px 30px; text-align: center; }
.gate svg { width: 56px; height: 56px; color: var(--brass); margin: 0 auto 18px; display: block; }
.gate h2 { font-family: var(--font-display); margin: 0 0 10px; font-size: 1.4rem; letter-spacing: .1em; }
.gate p { margin: 0 0 26px; color: var(--muted); font-size: .92rem; }
.gate .actions { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.gate .btn { justify-content: center; white-space: nowrap; padding: 13px 12px; }
@media (max-width: 380px) { .gate .actions { grid-template-columns: 1fr; } }

@media (max-height: 820px) { .scroll-hint { display: none; } }

/* ---------- reveal ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .8s ease, transform .8s cubic-bezier(.2, .7, .2, 1); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero-ring svg, .scroll-hint::after { animation: none; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- responsive ---------- */
@media (max-width: 860px) {
  .about, .work-detail { grid-template-columns: 1fr; }
  .work-detail .cover { position: static; }
  .hero-ring { right: -40%; opacity: .45; width: 120vw; }
}
@media (max-width: 560px) {
  .nav { gap: 14px; }
  .nav a { font-size: .66rem; letter-spacing: .12em; }
  .brand span { display: none; }
  .works, .works.featured { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .works.featured .work:nth-child(n+7) { display: block; }
  .news li a { grid-template-columns: 1fr 18px; gap: 6px 12px; }
  .news .date { grid-column: 1 / -1; }
  .pager { grid-template-columns: 1fr; }
  .pager .next { grid-column: 1; }
}