@import "https://fonts.googleapis.com/css2?family=Anton&family=Archivo+Black&family=Barlow+Condensed:wght@400;600;700&family=Noto+Sans+SC:wght@400;700;900&family=JetBrains+Mono:wght@400;700&display=swap";

/* ============================================================
   SCIENCE // AGENT — design tokens
   （视觉骨架沿用 FIELD//SYSTEM，配色改为学术蓝以呼应显微镜 logo）
   ============================================================ */
:root {
  --ink: #0c1e4f;        /* 主色：学术深蓝（logo 底色），替代 fieldsystem 的红 */
  --black: #0a0e1a;      /* 底色：偏冷的近黑 */
  --paper: #f5f1e8;      /* 纸白底（保留纸感） */
  --lab: #f59e0b;        /* 强调：实验琥珀（印章/sfx），替代 fieldsystem 的黄 */
  --scan: #38bdf8;       /* 信号：扫描线青（logo 青） */

  --font-heading: "Anton", "Archivo Black", sans-serif;
  --font-body: "Barlow Condensed", "Noto Sans SC", sans-serif;
  --font-mono: "JetBrains Mono", monospace;

  --transition-fast: 0.3s;
  --transition-normal: 0.6s;
  --transition-heavy: 0.85s;

  --z-background: 0;
  --z-content: 10;
  --z-overlay: 50;
  --z-navigation: 100;
  --z-transition: 200;
  --z-cursor: 999;
  --z-modal: 300;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  height: 100%;
}

body {
  background: var(--black);
  color: var(--paper);
  font-family: var(--font-body);
  font-weight: 600;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

@media (pointer: fine) {
  body {
    cursor: none;
  }
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ============================================================
   Noise / halftone overlays — paper grain
   ============================================================ */
.noise-overlay,
.halftone-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: var(--z-overlay);
}

.noise-overlay {
  opacity: 0.06;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.halftone-bg {
  opacity: 0.05;
  background-image: radial-gradient(rgba(255, 255, 255, 0.8) 1px, transparent 1.4px);
  background-size: 8px 8px;
}

/* ============================================================
   Custom cursor (pointer:fine only)
   ============================================================ */
.cursor-dot {
  position: fixed;
  top: 0;
  left: 0;
  width: 10px;
  height: 10px;
  background: var(--scan);
  border: 2px solid var(--paper);
  border-radius: 50%;
  z-index: var(--z-cursor);
  pointer-events: none;
  transform: translate(-50%, -50%);
  transition: transform 0.12s ease, background 0.2s, width 0.2s, height 0.2s;
  mix-blend-mode: difference;
}

.cursor-dot.is-active {
  width: 38px;
  height: 38px;
  background: var(--lab);
}

@media (pointer: coarse) {
  .cursor-dot {
    display: none;
  }
}

/* ============================================================
   BOOT / loading sequence
   ============================================================ */
.boot-screen {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  background: var(--black);
  display: grid;
  place-items: center;
  transition: opacity var(--transition-heavy) ease, visibility 0s linear var(--transition-heavy);
}

.boot-screen.is-done {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.boot-inner {
  width: min(520px, 86vw);
  text-align: left;
}

.boot-logo {
  font-family: var(--font-heading);
  font-size: clamp(2.2rem, 7vw, 4rem);
  line-height: 0.9;
  letter-spacing: 0.02em;
  color: var(--scan);
  margin-bottom: 1.6rem;
  text-shadow: 4px 4px 0 var(--black), 8px 8px 0 rgba(56, 189, 248, 0.25);
}

.boot-steps {
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.92rem;
  line-height: 2;
  color: var(--paper);
  border-left: 2px solid var(--scan);
  padding-left: 1rem;
}

.boot-steps li {
  opacity: 0.25;
  transition: opacity var(--transition-fast) ease, color var(--transition-fast) ease;
}

.boot-steps li .chev {
  color: var(--scan);
  margin-right: 0.5rem;
}

.boot-steps li.is-on {
  opacity: 1;
  color: var(--paper);
}

.boot-steps li.is-done {
  opacity: 0.7;
  text-decoration: line-through;
  text-decoration-color: var(--scan);
}

.boot-status {
  margin-top: 1.4rem;
  font-family: var(--font-heading);
  font-size: 1.3rem;
  letter-spacing: 0.08em;
  color: var(--lab);
  opacity: 0;
  transition: opacity var(--transition-normal) ease;
  border: 2px solid var(--lab);
  padding: 0.4rem 0.8rem;
  display: inline-block;
  transform: rotate(-2deg);
}

.boot-status.is-show {
  opacity: 1;
  animation: sfx-pop 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ============================================================
   App shell + chapter navigation rail
   ============================================================ */
.app {
  position: relative;
  z-index: var(--z-content);
  min-height: 100vh;
}

.chapter-nav {
  position: fixed;
  top: 50%;
  left: 0;
  transform: translateY(-50%);
  z-index: var(--z-navigation);
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 14px 6px;
  background: rgba(10, 14, 26, 0.72);
  backdrop-filter: blur(6px);
  border-right: 2px solid var(--ink);
  border-top: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
}

.chapter-nav::before {
  content: "OPEN";
  position: absolute;
  top: -22px;
  left: 0;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  color: var(--scan);
}

.chapter-btn {
  display: grid;
  grid-template-columns: 18px 1fr;
  align-items: center;
  gap: 8px;
  padding: 7px 12px 7px 8px;
  color: var(--paper);
  transition: background var(--transition-fast), color var(--transition-fast), padding-left var(--transition-fast);
  text-align: left;
  white-space: nowrap;
}

.chapter-btn .ch-num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--scan);
  font-weight: 700;
}

.chapter-btn .ch-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0.6;
  transition: opacity var(--transition-fast);
}

.chapter-btn:hover {
  background: var(--ink);
}

.chapter-btn:hover .ch-label,
.chapter-btn:hover .ch-num {
  color: var(--paper);
  opacity: 1;
}

.chapter-btn.is-active {
  background: var(--paper);
  color: var(--black);
  padding-left: 14px;
}

.chapter-btn.is-active .ch-num,
.chapter-btn.is-active .ch-label {
  color: var(--black);
  opacity: 1;
  font-weight: 700;
}

/* ============================================================
   Chapter section shell — diagonal split background
   ============================================================ */
.chapter-section {
  position: relative;
  min-height: 100vh;
  padding: 84px 64px 84px 120px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: section-in var(--transition-heavy) ease both;
}

@keyframes section-in {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.section-backdrop {
  position: absolute;
  inset: 0;
  z-index: var(--z-background);
  background: var(--black);
}

/* the dramatic diagonal ink shard (was red in fieldsystem) */
.foreground-shard {
  position: absolute;
  z-index: 0;
  pointer-events: none;
}

.foreground-shard--ink {
  top: -20%;
  right: -30%;
  width: 90%;
  height: 140%;
  background: var(--ink);
  transform: skewX(-18deg);
  clip-path: polygon(30% 0, 100% 0, 100% 100%, 0 100%);
}

.foreground-shard--black {
  top: 30%;
  right: -10%;
  width: 60%;
  height: 80%;
  background: var(--black);
  transform: skewX(-18deg);
  clip-path: polygon(20% 0, 100% 0, 100% 100%, 0 100%);
}

/* corner big number */
.oversized-index {
  position: absolute;
  top: 40px;
  right: 56px;
  z-index: 1;
  font-family: var(--font-heading);
  font-size: clamp(8rem, 22vw, 20rem);
  line-height: 0.8;
  color: var(--paper);
  opacity: 0.1;
  letter-spacing: -0.03em;
  pointer-events: none;
}

/* corner tag chip */
.section-tag {
  position: absolute;
  top: 30px;
  right: 30px;
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  background: var(--paper);
  color: var(--black);
  padding: 4px 10px;
  transform: rotate(3deg);
  font-weight: 700;
}

.section-hero-visual {
  position: absolute;
  z-index: 1;
  pointer-events: none;
}

/* hero silhouette block — abstract microscope/lab figure */
.hero-figure {
  position: absolute;
  right: 8%;
  top: 50%;
  transform: translateY(-50%);
  z-index: 1;
  width: clamp(200px, 26vw, 360px);
  aspect-ratio: 3 / 4;
  background: linear-gradient(160deg, #122044, #050810);
  border: 3px solid var(--paper);
  box-shadow: 14px 14px 0 var(--scan);
  overflow: hidden;
  display: grid;
  place-items: center;
}

.hero-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(0deg, transparent 0 6px, rgba(245, 241, 232, 0.04) 6px 7px),
    radial-gradient(circle at 50% 38%, rgba(245, 241, 232, 0.18) 0 18%, transparent 19%);
}

.hero-figure .hero-glyph {
  font-family: var(--font-heading);
  font-size: 6rem;
  color: rgba(245, 241, 232, 0.12);
  z-index: 1;
}

/* decorative star/sfx stamps */
.comic-star,
.comic-sfx {
  position: absolute;
  z-index: 3;
  font-family: var(--font-heading);
  text-transform: uppercase;
  pointer-events: none;
}

.comic-star {
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  color: var(--lab);
  animation: star-spin 8s linear infinite;
}

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

.comic-sfx {
  padding: 4px 10px;
  border: 2px solid var(--black);
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  transform: rotate(-4deg);
}

.comic-sfx--ink {
  background: var(--ink);
  color: var(--paper);
}
.comic-sfx--paper {
  background: var(--paper);
  color: var(--black);
}
.comic-sfx--lab {
  background: var(--lab);
  color: var(--black);
}

/* speed lines / scan sweep accents */
.speed-lines {
  position: absolute;
  z-index: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    90deg,
    transparent 0 14px,
    rgba(245, 241, 232, 0.05) 14px 16px
  );
}

.hero-scan-line {
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--scan), transparent);
  z-index: 4;
  pointer-events: none;
  animation: hero-scan-sweep 4s ease-in-out infinite;
}

@keyframes hero-scan-sweep {
  0%, 100% {
    top: 18%;
    opacity: 0;
  }
  50% {
    top: 78%;
    opacity: 0.8;
  }
}

/* ============================================================
   Section content blocks
   ============================================================ */
.section-content {
  position: relative;
  z-index: 5;
  max-width: 1100px;
}

.section-kicker {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  color: var(--scan);
  margin-bottom: 0.4rem;
}

.section-heading {
  font-family: var(--font-heading);
  font-size: clamp(2.6rem, 6.5vw, 5rem);
  line-height: 0.92;
  letter-spacing: 0.01em;
  text-transform: uppercase;
  margin-bottom: 0.6rem;
}

.section-heading span {
  display: block;
}

.section-heading span + span {
  color: var(--scan);
}

.section-sub {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--paper);
  opacity: 0.7;
  text-transform: uppercase;
}

/* ============================================================
   PROFILE
   ============================================================ */
.profile-title {
  font-family: var(--font-heading);
  font-size: clamp(3.4rem, 11vw, 9rem);
  line-height: 0.88;
  letter-spacing: 0.01em;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0 0.1em;
}

.profile-title .char {
  display: inline-block;
  transition: transform var(--transition-fast), color var(--transition-fast);
}

.profile-title .char:hover {
  transform: translateY(-8px) rotate(-6deg);
  color: var(--scan);
}

.profile-title .slash {
  color: var(--scan);
}

.profile-lines {
  margin-top: 1.2rem;
  font-family: var(--font-heading);
  font-size: clamp(1.2rem, 2.6vw, 2rem);
  line-height: 1.05;
  text-transform: uppercase;
}

.profile-lines span {
  display: block;
}

.profile-zh {
  margin-top: 1rem;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--paper);
  opacity: 0.85;
  max-width: 30ch;
}

.pillars {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 1.6rem;
}

.pillar {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  padding: 6px 12px;
  border: 2px solid var(--paper);
  text-transform: uppercase;
  background: var(--black);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.pillar:hover {
  background: var(--ink);
  border-color: var(--ink);
}

.archive-btn {
  margin-top: 2rem;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-heading);
  font-size: 1.05rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: var(--scan);
  color: var(--black);
  padding: 14px 26px;
  border: 3px solid var(--paper);
  box-shadow: 6px 6px 0 var(--paper);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.archive-btn:hover {
  transform: translate(-3px, -3px);
  box-shadow: 9px 9px 0 var(--paper);
}

.archive-btn .arrow {
  transition: transform var(--transition-fast);
}

.archive-btn:hover .arrow {
  transform: translateX(4px);
}

/* ============================================================
   Card grids (skills / portable / models)
   ============================================================ */
.card-grid {
  position: relative;
  z-index: 5;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin-top: 2.4rem;
}

.comic-paper-card {
  position: relative;
  background: var(--paper);
  color: var(--black);
  border: 3px solid var(--black);
  box-shadow: 10px 10px 0 var(--ink);
  padding: 18px 18px 16px;
  overflow: hidden;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.comic-paper-card:hover {
  transform: translate(-4px, -4px) rotate(-0.6deg);
  box-shadow: 14px 14px 0 var(--lab);
}

.comic-paper-card--a { background: var(--paper); }
.comic-paper-card--b { background: #e9e3d2; }
.comic-paper-card--c { background: var(--lab); }

.card-kicker-rip {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-bottom: 2px dashed rgba(10, 14, 26, 0.4);
  padding-bottom: 8px;
  margin-bottom: 12px;
}

.card-kicker-rip .kicker-l {
  background: var(--black);
  color: var(--paper);
  padding: 2px 6px;
}

.card-watermark {
  position: absolute;
  top: 30px;
  right: -6px;
  font-family: var(--font-heading);
  font-size: 4.4rem;
  line-height: 0.8;
  color: rgba(12, 30, 79, 0.12);
  letter-spacing: -0.04em;
  pointer-events: none;
  transform: rotate(6deg);
}

.card-title {
  position: relative;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  line-height: 1;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.card-zh {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.95rem;
  opacity: 0.7;
  margin-bottom: 10px;
}

.card-body {
  font-family: var(--font-body);
  font-size: 0.92rem;
  line-height: 1.35;
  font-weight: 500;
  margin-bottom: 14px;
  position: relative;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.card-tag {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.06em;
  padding: 3px 7px;
  background: var(--black);
  color: var(--paper);
  text-transform: uppercase;
}

/* hero stamp row inside hero (for pipe overview) */
.hero-stamps {
  position: absolute;
  z-index: 3;
  display: flex;
  flex-direction: column;
  gap: 6px;
  pointer-events: none;
}

/* horizontal pipe stage strip (portable chapter) */
.pipe-strip {
  position: relative;
  z-index: 5;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  margin: 1.4rem 0 0.4rem;
}

.pipe-stage {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: var(--paper);
  color: var(--black);
  padding: 6px 12px;
  border: 2px solid var(--black);
}

.pipe-stage:first-child {
  background: var(--scan);
  color: var(--black);
}

.pipe-arrow {
  color: var(--scan);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.9rem;
}

/* zigzag decorative strip */
.comic-zigzag {
  position: absolute;
  left: 0;
  right: 0;
  height: 12px;
  z-index: 2;
  background: linear-gradient(-45deg, var(--ink) 12px, transparent 12px 24px, var(--ink) 24px 36px, transparent 36px 48px, var(--ink) 48px);
  background-size: 48px 12px;
  opacity: 0.9;
  pointer-events: none;
}

/* ============================================================
   ARSENAL
   ============================================================ */
.arsenal-quote {
  font-family: var(--font-heading);
  font-size: clamp(1.1rem, 2.4vw, 1.7rem);
  line-height: 1.1;
  text-transform: uppercase;
  margin-top: 0.6rem;
}

.arsenal-quote span {
  display: block;
}

.arsenal-quote span:nth-child(2) {
  color: var(--scan);
}

.arsenal-layout {
  position: relative;
  z-index: 5;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 28px;
  margin-top: 2.2rem;
  align-items: start;
}

.skill-wall {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.skill-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 8px 12px;
  background: var(--paper);
  color: var(--black);
  border: 2px solid var(--black);
  font-weight: 700;
  transition: transform var(--transition-fast), background var(--transition-fast);
}

.skill-chip:hover {
  transform: translateY(-3px) rotate(-1deg);
}

.skill-chip.is-active {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--paper);
  box-shadow: 5px 5px 0 var(--black);
}

.skill-chip .status {
  font-size: 0.62rem;
  background: var(--black);
  color: var(--paper);
  padding: 1px 5px;
}

.skill-chip.is-active .status {
  background: var(--paper);
  color: var(--ink);
}

.skill-chip[data-status="UP"] .status {
  background: var(--lab);
  color: var(--black);
}

.skill-chip[data-status="ID"] .status {
  background: var(--scan);
  color: var(--black);
}

.skill-detail {
  background: var(--paper);
  color: var(--black);
  border: 3px solid var(--black);
  box-shadow: 10px 10px 0 var(--ink);
  padding: 20px;
  min-height: 220px;
}

.skill-detail .sd-name {
  font-family: var(--font-heading);
  font-size: 2rem;
  line-height: 1;
  text-transform: uppercase;
}

.skill-detail .sd-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 6px 0 14px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.sd-using {
  background: var(--ink);
  color: var(--paper);
  padding: 2px 8px;
}

.sd-cat {
  border: 2px solid var(--black);
  padding: 2px 8px;
}

.sd-block {
  margin-top: 10px;
}

.sd-block h4 {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 6px;
  color: var(--ink);
}

.sd-block p {
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.35;
}

.sd-related {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 4px;
}

.sd-related span {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  padding: 3px 7px;
  background: var(--black);
  color: var(--paper);
  text-transform: lowercase;
}

/* ============================================================
   ROADMAP (timeline)
   ============================================================ */
.timeline-grid {
  position: relative;
  z-index: 5;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 2.6rem;
}

.tl-node {
  position: relative;
  background: var(--paper);
  color: var(--black);
  border: 3px solid var(--black);
  padding: 18px;
  box-shadow: 8px 8px 0 var(--ink);
}

.tl-node.tl-now {
  background: var(--lab);
}

.tl-node.tl-target {
  background: var(--ink);
  color: var(--paper);
}

.tl-kicker {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.tl-big {
  font-family: var(--font-heading);
  font-size: 3.4rem;
  line-height: 0.8;
}

.tl-year {
  font-family: var(--font-heading);
  font-size: 1.6rem;
}

.tl-state {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin: 4px 0;
}

.tl-badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  padding: 3px 8px;
  background: var(--black);
  color: var(--paper);
  display: inline-block;
  margin: 6px 0 12px;
}

.tl-node.tl-target .tl-badge {
  background: var(--paper);
  color: var(--ink);
}

.tl-node ul {
  list-style: none;
  font-family: var(--font-body);
  font-size: 0.92rem;
  line-height: 1.4;
}

.tl-node ul li {
  padding: 5px 0 5px 18px;
  position: relative;
  border-bottom: 1px dashed rgba(10, 14, 26, 0.25);
}

.tl-node ul li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--ink);
}

.tl-node.tl-target ul li::before {
  color: var(--paper);
}

.tl-pulse {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--scan);
  animation: node-pulse 1.6s ease-in-out infinite;
}

@keyframes node-pulse {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(56, 189, 248, 0.6);
  }
  50% {
    box-shadow: 0 0 0 10px rgba(56, 189, 248, 0);
  }
}

.timeline-route-svg {
  position: absolute;
  left: 0;
  right: 0;
  top: -22px;
  height: 30px;
  z-index: 4;
  pointer-events: none;
}

.timeline-converge {
  position: relative;
  z-index: 5;
  margin-top: 2.4rem;
  text-align: center;
  font-family: var(--font-heading);
  font-size: clamp(1.2rem, 3vw, 2rem);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.timeline-converge .accent {
  color: var(--scan);
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact-quote {
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 4vw, 3rem);
  line-height: 1;
  text-transform: uppercase;
  margin-top: 0.8rem;
}

.contact-quote span {
  display: block;
}

.contact-quote span:nth-child(2) {
  color: var(--scan);
}

.contact-links {
  position: relative;
  z-index: 5;
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 2.4rem;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--paper);
  color: var(--black);
  border: 3px solid var(--black);
  box-shadow: 8px 8px 0 var(--ink);
  padding: 16px 22px;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  min-width: 220px;
}

.contact-link:hover {
  transform: translate(-3px, -3px) rotate(-1deg);
  box-shadow: 12px 12px 0 var(--lab);
}

.contact-link .cl-icon {
  font-size: 1.6rem;
}

.contact-link .cl-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.contact-link .cl-value {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  letter-spacing: 0.02em;
}

.site-footer {
  position: relative;
  z-index: 5;
  margin-top: 3rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--paper);
  opacity: 0.7;
  border-top: 2px solid var(--scan);
  padding-top: 14px;
}

.site-footer .ff-brand {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  letter-spacing: 0.04em;
  color: var(--scan);
  opacity: 1;
}

/* ============================================================
   Animations shared
   ============================================================ */
@keyframes sfx-pop {
  0% {
    transform: scale(0.4) rotate(-12deg);
    opacity: 0;
  }
  60% {
    transform: scale(1.12) rotate(2deg);
  }
  100% {
    transform: scale(1) rotate(-2deg);
    opacity: 1;
  }
}

@keyframes bubble-in {
  from {
    opacity: 0;
    transform: translateY(18px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.chapter-section .section-content > *,
.chapter-section .card-grid,
.chapter-section .arsenal-layout,
.chapter-section .timeline-grid,
.chapter-section .contact-links {
  animation: bubble-in 0.6s ease both;
}

/* stagger cards */
.card-grid .comic-paper-card:nth-child(2) {
  animation-delay: 0.08s;
}
.card-grid .comic-paper-card:nth-child(3) {
  animation-delay: 0.16s;
}

/* strike flash on nav */
.strike-flash {
  animation: sfx-pop 0.4s ease;
}

/* ============================================================
   Reduced motion
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* ============================================================
   Responsive
   ============================================================ */
@media (width <= 768px) {
  .chapter-section {
    padding: 80px 22px 60px;
  }

  .chapter-nav {
    flex-direction: row;
    top: auto;
    bottom: 0;
    left: 0;
    right: 0;
    transform: none;
    overflow-x: auto;
    border-right: none;
    border-top: 2px solid var(--ink);
    border-bottom: none;
    gap: 0;
    -webkit-overflow-scrolling: touch;
  }

  .chapter-nav::before {
    display: none;
  }

  .chapter-btn {
    flex-direction: column;
    gap: 2px;
    padding: 8px 10px;
  }

  .chapter-btn .ch-label {
    font-size: 0.58rem;
  }

  .oversized-index {
    font-size: 7rem;
    right: 16px;
    top: 70px;
  }

  .hero-figure {
    display: none;
  }

  .arsenal-layout {
    grid-template-columns: 1fr;
  }

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

  .profile-title {
    font-size: clamp(2.8rem, 14vw, 5rem);
  }

  .foreground-shard--ink {
    right: -60%;
    width: 130%;
  }
}