/* ============================================================
   睿諳 Eric · TRPG GM Card
   Palette: deep ocean blue + muted teal + warm accent
   ============================================================ */

:root {
  --c-ink:        #eaf2f6;
  --c-ink-soft:   #b9cad4;
  --c-ink-mute:   #7a8e99;
  --c-bg:         #07141d;
  --c-surface:    rgba(12, 28, 39, 0.72);
  --c-surface-2:  rgba(18, 40, 55, 0.55);
  --c-border:     rgba(150, 210, 230, 0.18);
  --c-border-2:   rgba(150, 210, 230, 0.32);
  --c-accent:     #7fd3e0;        /* teal */
  --c-accent-2:   #a8e6ec;        /* light teal */
  --c-warm:       #e08a7a;        /* coral (portrait scarf) */
  --c-warm-2:     #f2b3a5;

  --f-serif:    "Noto Serif TC", "Cormorant Garamond", "Songti TC", serif;
  --f-sans:     "Noto Sans TC", -apple-system, "PingFang TC", "Microsoft JhengHei", sans-serif;

  --radius:   14px;
  --radius-s: 8px;
  --shadow-1: 0 10px 40px -12px rgba(0, 0, 0, 0.55);
  --shadow-2: 0 20px 60px -20px rgba(0, 0, 0, 0.7);

  --maxw: 1180px;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--f-sans);
  color: var(--c-ink);
  background: var(--c-bg);
  line-height: 1.75;
  letter-spacing: 0.02em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ---------- background layers ---------- */
.bg-layer {
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image: url("background.png");
  background-size: cover;
  background-position: center top;
  background-repeat: no-repeat;
  filter: saturate(1.05) brightness(0.55);
  transform: scale(1.03);
}
.bg-veil {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(7, 20, 29, 0.35) 0%, rgba(7, 20, 29, 0.85) 55%, rgba(7, 20, 29, 0.98) 100%),
    linear-gradient(180deg, rgba(7, 20, 29, 0) 0%, rgba(7, 20, 29, 0.92) 60%);
}

/* subtle grain */
body::after {
  content: "";
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    radial-gradient(rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 3px 3px;
  opacity: 0.5;
  mix-blend-mode: overlay;
}

/* ---------- nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 40px;
  backdrop-filter: blur(14px) saturate(1.2);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
  background: linear-gradient(180deg, rgba(7,20,29,0.7), rgba(7,20,29,0.35));
  border-bottom: 1px solid var(--c-border);
}
.nav__brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: inherit;
  line-height: 1.2;
}
.nav__chibi {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at 50% 40%, rgba(127, 211, 224, 0.22) 0%, rgba(18, 40, 55, 0.9) 65%, rgba(7, 20, 29, 1) 100%);
  border: 1px solid var(--c-border-2);
  box-shadow: 0 4px 14px -4px rgba(0,0,0,0.5);
  flex-shrink: 0;
  transition: transform 0.3s ease, border-color 0.3s ease;
}
.nav__chibi img {
  width: 118%;
  height: 118%;
  object-fit: contain;
  object-position: center 30%;
  transform: translateY(6%);
}
.nav__brand:hover .nav__chibi {
  transform: rotate(-4deg) scale(1.05);
  border-color: var(--c-accent);
}
.nav__brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}
.nav__mark {
  font-family: var(--f-serif);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0.06em;
  color: var(--c-ink);
}
.nav__sub {
  font-size: 11px;
  letter-spacing: 0.28em;
  color: var(--c-accent);
  text-transform: uppercase;
  margin-top: 2px;
}
.nav__toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--c-border-2);
  border-radius: 10px;
  background: rgba(18, 40, 55, 0.5);
  padding: 0;
  cursor: pointer;
  position: relative;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  transition: border-color 0.2s ease, background 0.2s ease;
}
.nav__toggle:hover { border-color: var(--c-accent); }
.nav__toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--c-ink);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.2s ease;
}
.nav__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav__links {
  display: flex;
  gap: 26px;
}
.nav__links a {
  color: var(--c-ink-soft);
  text-decoration: none;
  font-size: 14px;
  letter-spacing: 0.08em;
  position: relative;
  transition: color 0.2s ease;
}
.nav__links a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -6px;
  height: 1px;
  background: var(--c-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}
.nav__links a:hover {
  color: var(--c-ink);
}
.nav__links a:hover::after { transform: scaleX(1); }

/* ---------- hero ---------- */
.hero {
  position: relative;
  min-height: calc(100vh - 68px);
  display: flex;
  align-items: center;
  padding: 60px 40px 80px;
}
.hero__inner {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 60px;
  align-items: center;
}
.hero__eyebrow {
  font-family: var(--f-sans);
  letter-spacing: 0.45em;
  text-transform: uppercase;
  font-size: 12px;
  color: var(--c-accent);
  margin: 0 0 28px;
  padding-left: 46px;
  position: relative;
}
.hero__eyebrow::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 32px;
  height: 1px;
  background: var(--c-accent);
}
.hero__title {
  font-family: var(--f-serif);
  font-weight: 900;
  font-size: clamp(40px, 6vw, 78px);
  line-height: 1.15;
  margin: 0 0 28px;
  letter-spacing: 0.04em;
  color: var(--c-ink);
}
.hero__title-line {
  display: block;
  background: linear-gradient(180deg, #ffffff 0%, #cfe8ef 70%, #7fd3e0 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 0 40px rgba(127, 211, 224, 0.12);
}
.hero__slogan {
  font-size: 17px;
  color: var(--c-ink-soft);
  max-width: 520px;
  margin: 0 0 32px;
  line-height: 1.9;
}
.hero__meta {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.tag {
  display: inline-block;
  padding: 6px 14px;
  border: 1px solid var(--c-border-2);
  border-radius: 999px;
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--c-ink-soft);
  background: rgba(255,255,255,0.02);
}
.tag--accent {
  border-color: var(--c-accent);
  color: var(--c-accent);
  background: rgba(127, 211, 224, 0.08);
}

.hero__cta { display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 26px;
  border-radius: var(--radius-s);
  font-size: 14px;
  letter-spacing: 0.16em;
  text-decoration: none;
  font-weight: 500;
  transition: transform 0.2s ease, background 0.25s ease, border-color 0.25s ease;
  border: 1px solid transparent;
}
.btn--primary {
  background: var(--c-accent);
  color: #05141c;
  font-weight: 700;
  box-shadow: 0 10px 30px -10px rgba(127, 211, 224, 0.55);
}
.btn--primary:hover {
  transform: translateY(-2px);
  background: var(--c-accent-2);
}
.btn--ghost {
  color: var(--c-ink);
  border-color: var(--c-border-2);
  background: rgba(255,255,255,0.02);
}
.btn--ghost:hover {
  border-color: var(--c-accent);
  color: var(--c-accent);
  transform: translateY(-2px);
}

/* hero portrait */
.hero__portrait {
  position: relative;
  justify-self: center;
  width: min(420px, 100%);
  aspect-ratio: 1 / 1;
}
.portrait-frame {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  overflow: hidden;
  border: 1px solid var(--c-border-2);
  box-shadow: var(--shadow-2), 0 0 0 10px rgba(127, 211, 224, 0.05);
  background:
    radial-gradient(circle at 50% 40%, rgba(127, 211, 224, 0.22) 0%, rgba(18, 40, 55, 0.85) 60%, rgba(7, 20, 29, 0.95) 100%);
}
.portrait-frame::before {
  content: "";
  position: absolute;
  inset: -2px;
  border-radius: 50%;
  background: conic-gradient(from 140deg, transparent 0 20%, rgba(127,211,224,0.5) 35%, transparent 55% 100%);
  animation: spin 16s linear infinite;
  z-index: 0;
}
.portrait-frame img {
  position: relative;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}

@keyframes spin { to { transform: rotate(360deg); } }

.hero__scroll {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  width: 1px;
  height: 50px;
  background: var(--c-border-2);
  overflow: hidden;
}
.hero__scroll span {
  position: absolute;
  top: -50%;
  left: 0;
  width: 100%;
  height: 50%;
  background: linear-gradient(180deg, transparent, var(--c-accent));
  animation: drop 2s ease-in-out infinite;
}
@keyframes drop {
  0% { top: -50%; }
  100% { top: 100%; }
}

/* ---------- section common ---------- */
.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 110px 40px;
  position: relative;
}
.section__head {
  margin-bottom: 56px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.section__index {
  font-family: var(--f-serif);
  font-style: italic;
  font-size: 14px;
  letter-spacing: 0.3em;
  color: var(--c-accent);
  margin-bottom: 6px;
}
.section__title {
  font-family: var(--f-serif);
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 700;
  margin: 0 0 6px;
  letter-spacing: 0.05em;
}
.section__sub {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--c-ink-mute);
}

/* ---------- about ---------- */
.about {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 40px;
}
.about__card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 40px;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: var(--shadow-1);
}
.about__card p {
  margin: 0 0 16px;
  color: var(--c-ink-soft);
  font-size: 16px;
}
.about__card p:last-child { margin-bottom: 0; }
.about__card strong { color: var(--c-ink); font-weight: 500; }
.about__card em {
  font-style: normal;
  color: var(--c-accent);
  font-weight: 500;
  border-bottom: 1px dashed var(--c-accent);
  padding-bottom: 1px;
}

.about__side {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.fact {
  border: 1px solid var(--c-border);
  border-radius: var(--radius-s);
  padding: 18px 22px;
  background: var(--c-surface-2);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 18px;
  transition: border-color 0.25s ease, transform 0.25s ease;
}
.fact:hover {
  border-color: var(--c-accent);
  transform: translateX(4px);
}
.fact__label {
  font-size: 11px;
  letter-spacing: 0.32em;
  color: var(--c-ink-mute);
  text-transform: uppercase;
}
.fact__value {
  font-family: var(--f-serif);
  font-size: 16px;
  color: var(--c-ink);
  text-align: right;
}

/* ---------- cards grid (style) ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 28px 26px 26px;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  transition: transform 0.3s ease, border-color 0.3s ease, background 0.3s ease;
  position: relative;
  overflow: hidden;
}
.card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(127,211,224,0.08), transparent 50%);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.card:hover {
  transform: translateY(-4px);
  border-color: var(--c-border-2);
  background: rgba(18, 40, 55, 0.75);
}
.card:hover::before { opacity: 1; }
.card__num {
  font-family: var(--f-serif);
  font-style: italic;
  font-size: 14px;
  letter-spacing: 0.2em;
  color: var(--c-accent);
  margin-bottom: 12px;
  position: relative;
}
.card__title {
  font-family: var(--f-serif);
  font-size: 22px;
  margin: 0 0 10px;
  color: var(--c-ink);
  letter-spacing: 0.04em;
  position: relative;
}
.card__desc {
  margin: 0;
  color: var(--c-ink-soft);
  font-size: 15px;
  line-height: 1.9;
  position: relative;
}
.card__desc strong { color: var(--c-accent-2); font-weight: 500; }

/* ---------- duo (voice) ---------- */
.duo {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 28px;
  align-items: stretch;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 40px;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}
.duo__item { padding: 4px 0; }
.duo__title {
  font-family: var(--f-serif);
  font-size: 20px;
  margin: 0 0 10px;
  color: var(--c-accent);
  letter-spacing: 0.08em;
}
.duo__body {
  margin: 0;
  font-size: 15px;
  color: var(--c-ink-soft);
  line-height: 1.9;
}
.duo__body strong { color: var(--c-ink); font-weight: 500; }
.duo__divider {
  width: 1px;
  background: linear-gradient(180deg, transparent, var(--c-border-2), transparent);
}

/* ---------- quote + rules (custom) ---------- */
.quote-block {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 48px 48px 40px;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  position: relative;
  overflow: hidden;
}
.quote-block::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 4px; height: 100%;
  background: linear-gradient(180deg, var(--c-accent), transparent);
}
.quote-block__text {
  font-family: var(--f-serif);
  font-size: clamp(22px, 2.5vw, 30px);
  line-height: 1.6;
  margin: 0 0 32px;
  color: var(--c-ink);
  letter-spacing: 0.04em;
}
.quote-block__text strong {
  color: var(--c-accent);
  font-weight: 700;
}
.rule-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px 36px;
}
.rule-list li {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  color: var(--c-ink-soft);
  font-size: 15px;
  line-height: 1.7;
}
.rule-list__num {
  flex-shrink: 0;
  font-family: var(--f-serif);
  font-style: italic;
  color: var(--c-accent);
  font-size: 14px;
  letter-spacing: 0.2em;
  padding-top: 2px;
  min-width: 30px;
}
.rule-list__text {
  flex: 1;
  min-width: 0;
}
.rule-list li strong { color: var(--c-ink); font-weight: 500; }

/* ---------- run teaser (index) ---------- */
.run-teaser {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 28px;
  padding: 36px 40px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  text-decoration: none;
  color: inherit;
  transition: transform 0.3s ease, border-color 0.3s ease, background 0.3s ease;
  position: relative;
  overflow: hidden;
}
.run-teaser::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(127,211,224,0.08), transparent 55%);
  opacity: 0;
  transition: opacity 0.35s ease;
  pointer-events: none;
}
.run-teaser:hover {
  transform: translateY(-3px);
  border-color: var(--c-accent);
  background: rgba(18, 40, 55, 0.82);
}
.run-teaser:hover::before { opacity: 1; }
.run-teaser__body { position: relative; min-width: 0; }
.run-teaser__eyebrow {
  font-family: var(--f-serif);
  font-style: italic;
  letter-spacing: 0.32em;
  font-size: 12px;
  color: var(--c-accent);
  text-transform: uppercase;
  margin: 0 0 6px;
}
.run-teaser__title {
  font-family: var(--f-serif);
  font-size: clamp(22px, 2.4vw, 28px);
  color: var(--c-ink);
  letter-spacing: 0.04em;
  margin: 0 0 10px;
}
.run-teaser__desc {
  margin: 0 0 16px;
  color: var(--c-ink-soft);
  font-size: 15px;
  line-height: 1.8;
}
.run-teaser__desc strong {
  color: var(--c-accent-2);
  font-weight: 500;
}
.run-teaser__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.chip-static {
  display: inline-block;
  padding: 5px 12px;
  border: 1px solid var(--c-border-2);
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--c-ink-soft);
  background: rgba(255,255,255,0.02);
}
.run-teaser__cta {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 24px;
  border-radius: var(--radius-s);
  background: var(--c-accent);
  color: #05141c;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.16em;
  box-shadow: 0 10px 30px -10px rgba(127, 211, 224, 0.55);
  flex-shrink: 0;
  transition: transform 0.25s ease, background 0.25s ease;
}
.run-teaser:hover .run-teaser__cta {
  background: var(--c-accent-2);
  transform: translateX(4px);
}
.run-teaser__cta span:last-child { font-size: 18px; font-weight: 500; }

/* ---------- scenarios page ---------- */
.page-scenarios .section--first {
  padding-top: 140px;
}
.nav__links a.is-current {
  color: var(--c-accent);
}
.nav__links a.is-current::after {
  transform: scaleX(1);
}

/* filter bar */
.filter {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  padding: 22px 26px;
  margin-bottom: 28px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.filter__row {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.filter__label {
  font-size: 11px;
  letter-spacing: 0.32em;
  color: var(--c-accent);
  text-transform: uppercase;
  flex-shrink: 0;
}
.filter__chips {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  flex: 1;
}
.chip {
  position: relative;
  display: inline-flex;
  align-items: center;
  cursor: pointer;
  user-select: none;
}
.chip input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}
.chip span {
  display: inline-block;
  padding: 7px 16px;
  border: 1px solid var(--c-border-2);
  border-radius: 999px;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--c-ink-soft);
  background: rgba(255,255,255,0.02);
  transition: all 0.2s ease;
}
.chip:hover span {
  color: var(--c-ink);
  border-color: var(--c-accent);
}
.chip input:checked + span {
  color: #05141c;
  background: var(--c-accent);
  border-color: var(--c-accent);
  font-weight: 600;
  box-shadow: 0 4px 14px -4px rgba(127, 211, 224, 0.5);
}
.filter__clear {
  flex-shrink: 0;
  padding: 7px 16px;
  background: transparent;
  border: 1px solid var(--c-border-2);
  border-radius: 999px;
  color: var(--c-ink-soft);
  font-size: 12px;
  letter-spacing: 0.12em;
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease;
  font-family: inherit;
}
.filter__clear:hover {
  color: var(--c-accent);
  border-color: var(--c-accent);
}

.filter__row--r18 {
  padding-top: 16px;
  border-top: 1px solid var(--c-border);
  justify-content: space-between;
}
.toggle {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  user-select: none;
}
.toggle input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}
.toggle__track {
  display: inline-block;
  position: relative;
  width: 44px;
  height: 24px;
  border-radius: 999px;
  background: rgba(120, 140, 150, 0.25);
  border: 1px solid var(--c-border-2);
  transition: background 0.25s ease, border-color 0.25s ease;
  flex-shrink: 0;
}
.toggle__thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--c-ink-soft);
  transition: transform 0.25s ease, background 0.25s ease;
}
.toggle input:checked + .toggle__track {
  background: rgba(224, 138, 122, 0.4);
  border-color: var(--c-warm);
}
.toggle input:checked + .toggle__track .toggle__thumb {
  transform: translateX(20px);
  background: var(--c-warm-2);
}
.toggle__label {
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--c-ink-soft);
}
.toggle input:checked ~ .toggle__label {
  color: var(--c-warm-2);
}
.filter__count {
  font-size: 12px;
  color: var(--c-ink-mute);
  letter-spacing: 0.12em;
}

.run-item.is-hidden {
  display: none !important;
}
.run-state {
  margin: 0;
  padding: 40px 20px;
  text-align: center;
  color: var(--c-ink-mute);
  font-size: 14px;
  letter-spacing: 0.12em;
  border: 1px dashed var(--c-border-2);
  border-radius: var(--radius);
}
.run-state--error {
  border-color: var(--c-warm);
  color: var(--c-warm-2);
  background: rgba(224, 138, 122, 0.06);
  line-height: 1.8;
}
.run-empty {
  display: none;
  text-align: center;
  padding: 60px 20px;
  color: var(--c-ink-mute);
  font-size: 15px;
  letter-spacing: 0.12em;
  border: 1px dashed var(--c-border-2);
  border-radius: var(--radius);
  margin: 0;
}
.run-empty.is-visible {
  display: block;
}

/* ---------- run list ---------- */
.run-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.run-item {
  display: grid;
  grid-template-columns: 140px 1fr auto;
  gap: 28px;
  align-items: center;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 28px 32px;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  transition: border-color 0.3s ease, transform 0.3s ease;
}
.run-item:hover {
  border-color: var(--c-accent);
  transform: translateX(4px);
}
.run-item--link {
  text-decoration: none;
  color: inherit;
  position: relative;
}
.run-item--link::after {
  content: "↗";
  position: absolute;
  top: 18px;
  right: 20px;
  font-size: 16px;
  color: var(--c-ink-mute);
  transition: color 0.25s ease, transform 0.25s ease;
}
.run-item--link:hover::after {
  color: var(--c-accent);
  transform: translate(2px, -2px);
}
.run-item--warn {
  border-color: rgba(224, 138, 122, 0.35);
}
.run-item--warn:hover {
  border-color: var(--c-warm);
}
.run-item__title-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 6px;
}
.run-item__title-row .run-item__title { margin: 0; }
.run-item__badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border: 1px solid var(--c-warm);
  border-radius: 999px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--c-warm-2);
  background: rgba(224, 138, 122, 0.1);
}
.run-item__warn {
  margin: 12px 0 0;
  padding: 12px 14px;
  border-left: 3px solid var(--c-warm);
  background: rgba(224, 138, 122, 0.08);
  border-radius: 4px;
  color: var(--c-ink-soft);
  font-size: 13px;
  line-height: 1.8;
}
.run-item__warn strong {
  color: var(--c-warm-2);
  font-weight: 700;
  letter-spacing: 0.04em;
}
.run-item--placeholder {
  opacity: 0.7;
  border-style: dashed;
}
.run-item--placeholder:hover {
  transform: none;
  border-color: var(--c-border-2);
}
.run-item__system {
  font-family: var(--f-serif);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.1em;
  color: var(--c-accent);
  border-right: 1px solid var(--c-border);
  padding-right: 28px;
}
.run-item__title {
  font-family: var(--f-serif);
  font-size: 22px;
  margin: 0 0 6px;
  color: var(--c-ink);
  letter-spacing: 0.04em;
}
.run-item__meta {
  margin: 0 0 10px;
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 12px;
  color: var(--c-ink-mute);
  letter-spacing: 0.12em;
}
.run-item__meta span { display: inline-block; }
.run-item__desc {
  margin: 0;
  color: var(--c-ink-soft);
  font-size: 14px;
  line-height: 1.8;
}
.run-item__desc a {
  color: var(--c-accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(127, 211, 224, 0.4);
  transition: border-color 0.2s ease;
}
.run-item__desc a:hover { border-bottom-color: var(--c-accent); }
.run-item__status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--c-accent);
  text-transform: uppercase;
}
.run-item__status--muted { color: var(--c-ink-mute); }
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-accent);
  box-shadow: 0 0 0 4px rgba(127, 211, 224, 0.2);
  animation: pulse 2.2s ease-in-out infinite;
}
.status-dot--muted {
  background: var(--c-ink-mute);
  box-shadow: 0 0 0 4px rgba(120,140,150,0.1);
  animation: none;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(127, 211, 224, 0.2); }
  50%      { box-shadow: 0 0 0 8px rgba(127, 211, 224, 0); }
}

/* ---------- contacts ---------- */
.contacts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}
.contact-card {
  display: flex;
  align-items: center;
  gap: 16px;
  text-decoration: none;
  padding: 22px 24px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
  color: var(--c-ink);
  position: relative;
  overflow: hidden;
}
.contact-card:hover {
  transform: translateY(-3px);
  border-color: var(--c-accent);
  background: rgba(18, 40, 55, 0.85);
}
.contact-card__icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(127, 211, 224, 0.1);
  color: var(--c-accent);
  border: 1px solid var(--c-border-2);
  transition: background 0.25s ease, color 0.25s ease;
}
.contact-card:hover .contact-card__icon {
  background: var(--c-accent);
  color: #05141c;
}
.contact-card__body {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}
.contact-card__label {
  font-size: 11px;
  letter-spacing: 0.32em;
  color: var(--c-accent);
  text-transform: uppercase;
}
.contact-card__value {
  font-family: var(--f-serif);
  font-size: 16px;
  color: var(--c-ink);
  letter-spacing: 0.04em;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.contact-card__hint {
  font-size: 11px;
  color: var(--c-ink-mute);
  letter-spacing: 0.12em;
}
.contact-card.is-copied .contact-card__hint { color: var(--c-accent); }

/* ---------- links ---------- */
.links {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.link-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-decoration: none;
  padding: 24px 26px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
  position: relative;
  overflow: hidden;
}
.link-card::after {
  content: "↗";
  position: absolute;
  top: 22px;
  right: 24px;
  font-size: 18px;
  color: var(--c-ink-mute);
  transition: color 0.25s ease, transform 0.25s ease;
}
.link-card:hover {
  transform: translateY(-3px);
  border-color: var(--c-accent);
  background: rgba(18, 40, 55, 0.85);
}
.link-card:hover::after {
  color: var(--c-accent);
  transform: translate(2px, -2px);
}
.link-card__label {
  font-size: 11px;
  letter-spacing: 0.32em;
  color: var(--c-accent);
  text-transform: uppercase;
}
.link-card__title {
  font-family: var(--f-serif);
  font-size: 18px;
  color: var(--c-ink);
  letter-spacing: 0.04em;
}
.link-card__host {
  font-size: 12px;
  color: var(--c-ink-mute);
  letter-spacing: 0.08em;
}
.link-card--plurk::before {
  content: "";
  position: absolute;
  bottom: 0; left: 0;
  height: 2px; width: 100%;
  background: linear-gradient(90deg, var(--c-warm), var(--c-accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}
.link-card--plurk:hover::before { transform: scaleX(1); }

/* ---------- footer ---------- */
.footer {
  border-top: 1px solid var(--c-border);
  background: rgba(5, 14, 20, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.footer__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 28px 40px;
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--c-ink-mute);
  letter-spacing: 0.2em;
}
.footer__right {
  font-family: var(--f-serif);
  font-style: italic;
  color: var(--c-accent);
}
.footer__credit {
  font-size: 11px;
  color: var(--c-ink-mute);
  letter-spacing: 0.14em;
  margin: 0;
}
.footer__credit a {
  color: var(--c-ink-soft);
  text-decoration: none;
  border-bottom: 1px dotted var(--c-border-2);
  padding-bottom: 1px;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.footer__credit a:hover {
  color: var(--c-accent);
  border-bottom-color: var(--c-accent);
}

/* ---------- reveal on scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- responsive ---------- */

/* Ultra-wide: keep content centered, lift hero type a touch */
@media (min-width: 1600px) {
  :root { --maxw: 1260px; }
  .hero__title { font-size: clamp(52px, 5vw, 88px); }
}

/* Large desktop / laptop: fluid padding so very wide & very narrow feel natural */
@media (max-width: 1280px) {
  .nav { padding: 16px clamp(20px, 3vw, 40px); }
  .section { padding: 100px clamp(20px, 4vw, 40px); }
  .hero { padding: 60px clamp(20px, 4vw, 40px) 80px; }
  .footer__inner { padding: 28px clamp(20px, 3vw, 40px); }
}

/* Mid-desktop: cards 2-col */
@media (max-width: 1080px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
}

/* Large tablet / small laptop */
@media (max-width: 1024px) {
  .hero__inner { gap: 40px; }
  .hero__portrait { width: min(360px, 90%); }
  .about { grid-template-columns: 1.4fr 1fr; gap: 28px; }
  .run-item { grid-template-columns: 120px 1fr auto; gap: 20px; padding: 24px 26px; }
}

@media (max-width: 960px) {
  .nav { padding: 14px 20px; }
  .nav__toggle { display: inline-flex; }
  .nav__links {
    position: fixed;
    top: 72px;
    left: 14px;
    right: 14px;
    flex-direction: column;
    gap: 0;
    padding: 14px 18px;
    background: rgba(10, 26, 36, 0.96);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-2);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    pointer-events: none;
    transition: max-height 0.35s ease, opacity 0.25s ease, padding 0.3s ease;
  }
  .nav__links.is-open {
    max-height: 400px;
    opacity: 1;
    pointer-events: auto;
    padding: 14px 18px;
  }
  .nav__links a {
    padding: 14px 4px;
    border-bottom: 1px solid rgba(150, 210, 230, 0.08);
    font-size: 15px;
  }
  .nav__links a:last-child { border-bottom: none; }
  .nav__links a::after { display: none; }

  .hero { padding: 40px 20px 60px; min-height: auto; }
  .hero__inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero__portrait { width: min(320px, 80%); order: -1; }
  .hero__eyebrow { padding-left: 36px; }
  .hero__eyebrow::before { width: 22px; }

  .section { padding: 72px 20px; }
  .section__head { margin-bottom: 40px; }

  .about { grid-template-columns: 1fr; gap: 20px; }
  .about__card { padding: 28px; }

  .cards { grid-template-columns: 1fr; }

  .duo {
    grid-template-columns: 1fr;
    padding: 28px;
  }
  .duo__divider {
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--c-border-2), transparent);
  }

  .quote-block { padding: 32px 24px; }
  .rule-list { grid-template-columns: 1fr; }

  .run-item {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 22px;
  }
  .run-item__system {
    border-right: none;
    border-bottom: 1px solid var(--c-border);
    padding: 0 0 12px;
  }

  .links { grid-template-columns: 1fr; }
  .contacts { grid-template-columns: 1fr; }

  .run-teaser {
    grid-template-columns: 1fr;
    padding: 28px 24px;
    gap: 20px;
  }
  .run-teaser__cta { align-self: flex-start; }

  .page-scenarios .section--first { padding-top: 100px; }
  .filter { padding: 18px 18px; gap: 14px; }
  .filter__row { gap: 12px; }
  .filter__label { width: 100%; margin-bottom: 2px; }
  .filter__chips { width: 100%; }
  .filter__clear { margin-left: auto; }
  .filter__row--r18 { padding-top: 12px; gap: 10px; }

  .footer__inner {
    flex-direction: column;
    gap: 10px;
    text-align: center;
    padding: 20px;
  }
}

/* Tablet portrait — tablets 641–960px:  fine-tune grids */
@media (max-width: 768px) {
  .section { padding: 64px clamp(16px, 4vw, 24px); }
  .hero { padding: 40px clamp(16px, 4vw, 24px) 60px; }
  .links { grid-template-columns: 1fr; }
  .contacts { grid-template-columns: 1fr; }
  .filter__chips { gap: 8px; }
  .chip span { padding: 6px 14px; font-size: 12.5px; }
  .duo { padding: 24px; }
  .quote-block { padding: 28px 22px; }
}

/* Small tablet / large phone */
@media (max-width: 640px) {
  .nav { padding: 12px 16px; }
  .section__head { margin-bottom: 32px; }
  .section__index { font-size: 13px; letter-spacing: 0.26em; }
  .section__sub { letter-spacing: 0.26em; }
  .about__side { gap: 10px; }
  .fact { padding: 16px 18px; }
  .card { padding: 22px 20px; }
  .run-item__title { line-height: 1.3; }
  .run-item__title-row { gap: 8px; }
  .run-item__badge { font-size: 10px; padding: 3px 9px; letter-spacing: 0.12em; }
  .run-item__warn { padding: 10px 12px; font-size: 12.5px; }
}

@media (max-width: 540px) {
  .nav { padding: 12px 14px; }
  .nav__mark { font-size: 17px; letter-spacing: 0.04em; }
  .nav__sub { font-size: 10px; letter-spacing: 0.2em; }
  .nav__chibi { width: 38px; height: 38px; }

  .hero { padding: 28px 16px 48px; }
  .hero__title { font-size: clamp(32px, 10vw, 44px); }
  .hero__slogan { font-size: 15px; }
  .hero__meta { gap: 8px; }
  .tag { font-size: 12px; padding: 5px 11px; }
  .btn { padding: 12px 20px; font-size: 13px; }
  .hero__portrait { width: 70%; }
  .portrait-frame { box-shadow: var(--shadow-2), 0 0 0 6px rgba(127, 211, 224, 0.04); }

  .section { padding: 56px 16px; }
  .section__head { margin-bottom: 32px; }
  .section__title { font-size: clamp(22px, 6vw, 28px); }

  .about__card {
    padding: 22px 20px;
    font-size: 15px;
  }
  .about__card p { font-size: 15px; }
  .fact {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    padding: 14px 16px;
  }
  .fact__value { text-align: left; font-size: 15px; }

  .card { padding: 22px 20px; }
  .card__title { font-size: 19px; }
  .card__desc { font-size: 14px; }

  .quote-block { padding: 26px 20px; }
  .quote-block__text { font-size: clamp(18px, 5.2vw, 22px); }

  .run-item { padding: 20px 18px; }
  .run-item__title { font-size: 19px; }
  .run-item__meta { gap: 6px 14px; }
  .run-item__meta span { font-size: 11px; }

  .contact-card { padding: 18px 18px; gap: 14px; }
  .contact-card__icon { width: 38px; height: 38px; }
  .contact-card__value { font-size: 15px; }

  .link-card { padding: 20px 22px; }
  .link-card::after { top: 18px; right: 20px; }

  .run-teaser { padding: 24px 20px; }
  .run-teaser__title { font-size: 20px; }
  .run-teaser__desc { font-size: 14px; }
  .run-teaser__cta { padding: 12px 20px; font-size: 13px; }

  .hero__scroll { display: none; }

  .page-scenarios .section--first { padding-top: 84px; }
  .filter { padding: 16px 14px; }
  .filter__row { gap: 10px; }
  .filter__chips { gap: 6px; }
  .chip span { padding: 6px 13px; font-size: 12px; letter-spacing: 0.06em; }
  .filter__clear { padding: 6px 12px; font-size: 11px; }
  .filter__row--r18 {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
  .toggle__label { font-size: 13px; }
  .filter__count { font-size: 11px; }
  .run-empty { padding: 40px 16px; font-size: 14px; }
}

/* Small phone (≤ 430px): typical iPhone/Android widths */
@media (max-width: 430px) {
  .nav__sub { display: none; }
  .nav__mark { font-size: 16px; }
  .nav__chibi { width: 34px; height: 34px; }
  .hero__title { font-size: clamp(28px, 9vw, 38px); line-height: 1.2; }
  .hero__slogan { font-size: 14px; line-height: 1.85; }
  .hero__eyebrow { font-size: 11px; letter-spacing: 0.32em; padding-left: 30px; margin-bottom: 22px; }
  .hero__eyebrow::before { width: 18px; }
  .hero__cta { gap: 10px; }
  .btn { padding: 11px 18px; font-size: 12px; letter-spacing: 0.12em; }
  .tag { font-size: 11.5px; padding: 4px 10px; letter-spacing: 0.08em; }
  .section { padding: 48px 14px; }
  .section__head { margin-bottom: 28px; }
  .section__title { font-size: clamp(20px, 6.5vw, 26px); line-height: 1.35; letter-spacing: 0.03em; }
  .about__card { padding: 20px 18px; }
  .about__card p { font-size: 14.5px; line-height: 1.85; }
  .fact__label { font-size: 10px; letter-spacing: 0.24em; }
  .fact__value { font-size: 14.5px; }
  .run-item { padding: 18px 16px; gap: 10px; }
  .run-item__system { font-size: 16px; padding-bottom: 10px; }
  .run-item__title { font-size: 17px; }
  .run-item__desc { font-size: 13.5px; line-height: 1.75; }
  .run-item__status { font-size: 11px; letter-spacing: 0.16em; }
  .contact-card { padding: 16px 16px; gap: 12px; }
  .contact-card__value { font-size: 14px; }
  .link-card { padding: 18px 18px; }
  .link-card__title { font-size: 16px; }

  .run-teaser { padding: 22px 18px; gap: 18px; }
  .run-teaser__title { font-size: 18px; }
  .run-teaser__desc { font-size: 13.5px; line-height: 1.8; }
  .run-teaser__cta { padding: 11px 18px; font-size: 12px; letter-spacing: 0.12em; }
  .chip-static { font-size: 11px; padding: 4px 10px; letter-spacing: 0.08em; }

  .page-scenarios .section--first { padding-top: 76px; }
  .run-state { padding: 32px 16px; font-size: 13px; letter-spacing: 0.08em; }
  .run-empty { padding: 36px 14px; font-size: 13px; }
  .run-item__warn { padding: 10px 12px; font-size: 12.5px; line-height: 1.75; }
}

/* Very small phone (≤ 360px): iPhone SE etc. */
@media (max-width: 360px) {
  .nav { padding: 10px 12px; }
  .nav__mark { font-size: 15px; letter-spacing: 0.02em; }
  .nav__toggle { width: 38px; height: 38px; }
  .hero { padding: 24px 12px 40px; }
  .hero__title { font-size: 26px; }
  .section { padding: 40px 12px; }
  .btn { padding: 10px 16px; font-size: 11.5px; }
  .filter { padding: 14px 12px; }
  .chip span { padding: 5px 11px; font-size: 11.5px; }
  .tag { font-size: 11px; padding: 4px 9px; }

  .run-teaser { padding: 20px 16px; }
  .run-teaser__title { font-size: 17px; }
  .chip-static { font-size: 10.5px; padding: 4px 9px; }
  .page-scenarios .section--first { padding-top: 68px; }
  .run-state, .run-empty { padding: 28px 12px; font-size: 12.5px; }
}

/* Short-landscape phones: avoid huge hero eating the viewport */
@media (max-height: 560px) and (orientation: landscape) {
  .hero { min-height: auto; padding: 40px 32px; }
  .hero__inner { grid-template-columns: 1.3fr 1fr; gap: 32px; }
  .hero__portrait { width: min(220px, 40vw); order: 0; }
  .hero__title { font-size: clamp(28px, 5vw, 48px); }
  .hero__scroll { display: none; }
}

/* Honor user motion preferences */
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .status-dot { animation: none; }
  .portrait-chibi { animation: none; }
  .portrait-frame::before { animation: none; }
  .hero__scroll span { animation: none; }
  * { scroll-behavior: auto !important; }
}