/* ============================================================
   陈仕勤 · 产品总监 — 技术档案纸
   Design system: warm paper ground / ink type / pine signal
   ============================================================ */

/* ---------- 0. 字体 ----------
   阿里巴巴普惠体 3.0（免费商用），按本站实际用字子集化：
   两个字重合计 209KB，内置托管、零外部请求，国内可直接加载。
   子集由 tools/subset-font.py 生成，改动正文后请重跑。 */
@font-face {
  font-family: "PuHuiTi";
  src: url("fonts/puhuiti-400.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "PuHuiTi";
  src: url("fonts/puhuiti-700.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* ---------- 1. Tokens ---------- */
:root {
  /* ground */
  --paper-0: #FFFFFF;   /* raised surface */
  --paper-1: #FAF8F4;   /* page ground */
  --paper-2: #F3F0E8;   /* sunken fill */
  --paper-3: #E9E4D9;   /* deeper fill */

  /* ink */
  --ink-900: #101315;
  --ink-800: #1C2126;
  --ink-700: #333A40;
  --ink-600: #454C52;   /* body */
  --ink-500: #5C6469;
  --ink-400: #737B80;   /* meta — 4.5:1 on paper */
  --ink-300: #9AA1A6;

  /* line */
  --line:        rgba(16, 19, 21, 0.11);
  --line-mid:    rgba(16, 19, 21, 0.17);
  --line-strong: rgba(16, 19, 21, 0.32);

  /* signal — deep pine */
  --accent:       #0A6B52;
  --accent-2:     #0E8A6A;
  --accent-wash:  rgba(10, 107, 82, 0.07);
  --accent-line:  rgba(10, 107, 82, 0.34);
  --accent-ink:   #FFFFFF;

  /* supporting */
  --slate: #2F5D8C;

  /* type stacks — PuHuiTi covers CJK + Latin; system CJK kept as fallback */
  --f-han: "PuHuiTi", "PingFang SC", "HarmonyOS Sans SC", "MiSans",
           "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei",
           "Hiragino Sans GB", system-ui, sans-serif;
  --f-display: var(--f-han);
  --f-mono: "Cascadia Mono", "SF Mono", "SFMono-Regular", Menlo, Consolas,
            "Liberation Mono", "Courier New", monospace;

  /* layout — compact */
  --rail: 214px;
  --gut: 38px;
  --maxw: 1120px;

  /* motion */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-io: cubic-bezier(0.65, 0, 0.35, 1);
}

/* ---------- 2. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 18px;
}

body {
  background: var(--paper-1);
  color: var(--ink-600);
  font-family: var(--f-han);
  font-size: 16.5px;
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, svg, canvas { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

::selection { background: var(--accent); color: var(--accent-ink); }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 1px; }

::-webkit-scrollbar { width: 11px; height: 11px; }
::-webkit-scrollbar-track { background: var(--paper-2); }
::-webkit-scrollbar-thumb {
  background: #C9C3B6;
  border: 3px solid var(--paper-2);
  border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover { background: #B0A99A; }

/* ---------- 3. Atmosphere ---------- */
.atmos { position: fixed; inset: 0; pointer-events: none; z-index: 0; }

/* faint pencil grid */
.atmos--grid {
  background-image:
    linear-gradient(to right, var(--line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 118% 82% at 50% 0%, #000 0%, transparent 72%);
  -webkit-mask-image: radial-gradient(ellipse 118% 82% at 50% 0%, #000 0%, transparent 72%);
  opacity: 0.75;
}

.atmos--glow {
  background:
    radial-gradient(680px 440px at 10% -8%, rgba(10, 107, 82, 0.07), transparent 62%),
    radial-gradient(760px 500px at 94% 4%, rgba(47, 93, 140, 0.05), transparent 60%);
}

.atmos--grain {
  z-index: 60;
  opacity: 0.20;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)' opacity='0.42'/%3E%3C/svg%3E");
}

/* ---------- 4. Shell ---------- */
.shell {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: var(--rail) minmax(0, 1fr);
  min-height: 100vh;
}

/* ---------- 5. Rail ---------- */
.rail {
  position: sticky;
  top: 0;
  align-self: start;
  height: 100vh;
  padding: 24px 20px 18px 24px;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--line);
  background: linear-gradient(180deg, var(--paper-0), var(--paper-1));
}

.rail__id { display: flex; align-items: baseline; gap: 8px; }
.rail__name { font-size: 17.5px; font-weight: 700; letter-spacing: 0.13em; color: var(--ink-900); white-space: nowrap; }
.rail__role {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--accent);
  text-transform: uppercase;
}
.rail__meta {
  margin-top: 5px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.09em;
  color: var(--ink-400);
}

.rail__nav { margin-top: 30px; display: flex; flex-direction: column; gap: 0; }

.rail__link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 8px 7px 11px;
  color: var(--ink-500);
  transition: color 0.25s var(--ease-out), background 0.25s var(--ease-out);
}
.rail__link::before {
  content: "";
  position: absolute;
  left: 0; top: 50%;
  width: 2px; height: 0;
  background: var(--accent);
  transform: translateY(-50%);
  transition: height 0.3s var(--ease-out);
}
.rail__link:hover { color: var(--ink-900); background: rgba(16,19,21,0.032); }

.rail__num {
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: 0.05em;
  color: var(--ink-300);
  transition: color 0.25s var(--ease-out);
}
.rail__label { font-size: 15px; letter-spacing: 0.06em; white-space: nowrap; }

.rail__link.is-active { color: var(--ink-900); font-weight: 500; }
.rail__link.is-active::before { height: 16px; }
.rail__link.is-active .rail__num { color: var(--accent); }

.rail__foot { margin-top: auto; }
.rail__bar { height: 2px; background: var(--line-mid); overflow: hidden; }
.rail__bar i {
  display: block;
  height: 100%;
  width: 0%;
  background: var(--accent);
  transition: width 0.15s linear;
}
.rail__pct {
  margin-top: 6px;
  display: flex;
  justify-content: space-between;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.09em;
  color: var(--ink-400);
}

.rail__print {
  margin-top: 11px;
  width: 100%;
  padding: 7px 10px;
  border: 1px solid var(--line-mid);
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.13em;
  color: var(--ink-500);
  text-align: center;
  transition: all 0.25s var(--ease-out);
}
.rail__print:hover {
  border-color: var(--accent-line);
  color: var(--accent);
  background: var(--accent-wash);
}
.rp-mini { display: none; }

/* ---------- 6. Main ---------- */
.main { min-width: 0; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gut); }

section[id] { border-bottom: 1px solid var(--line); }
section[id]:last-of-type { border-bottom: none; }

/* ---------- 7. Hero ---------- */
.hero {
  position: relative;
  min-height: min(78vh, 660px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 56px 0 48px;
  overflow: hidden;
}

.hero__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.5;
  mask-image: radial-gradient(ellipse 88% 72% at 40% 46%, #000 0%, transparent 74%);
  -webkit-mask-image: radial-gradient(ellipse 88% 72% at 40% 46%, #000 0%, transparent 74%);
}

.hero__body { position: relative; z-index: 2; }

/* name — modular cells */
.name {
  display: flex;
  gap: 11px;
  margin: 0;
  font-size: clamp(52px, 5.6vw, 72px);
  font-weight: 800;
  line-height: 1;
  color: var(--ink-900);
}

.name__cell {
  position: relative;
  padding: 0.07em 0.09em 0.13em;
  border: 1px solid var(--line-mid);
  background: var(--paper-0);
  box-shadow: 0 1px 0 rgba(16,19,21,0.03);
  transition: border-color 0.35s var(--ease-out), background 0.35s var(--ease-out), transform 0.35s var(--ease-out);
}
.name__cell:hover {
  border-color: var(--accent-line);
  background: var(--accent-wash);
  transform: translateY(-3px);
}
.name__cell::before,
.name__cell::after {
  content: "";
  position: absolute;
  width: 7px; height: 7px;
  border: 1px solid var(--accent);
  opacity: 0;
  transition: opacity 0.35s var(--ease-out);
}
.name__cell::before { top: -1px; left: -1px; border-right: 0; border-bottom: 0; }
.name__cell::after  { bottom: -1px; right: -1px; border-left: 0; border-top: 0; }
.name__cell:hover::before,
.name__cell:hover::after { opacity: 1; }

.handle { margin-top: 15px; display: flex; align-items: center; gap: 13px; flex-wrap: wrap; }
.handle__latin {
  font-family: var(--f-display);
  font-size: clamp(16px, 1.9vw, 20px);
  font-weight: 600;
  letter-spacing: 0.32em;
  color: var(--ink-700);
  text-transform: uppercase;
}
.handle__rule { flex: 0 0 36px; height: 1px; background: var(--accent); }
.handle__role { font-size: clamp(15.5px, 1.6vw, 18px); letter-spacing: 0.18em; color: var(--ink-900); }

/* thesis */
.thesis {
  margin-top: 28px;
  max-width: 700px;
  border-left: 1px solid var(--line-mid);
  padding-left: 18px;
}
.thesis__cap {
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: var(--ink-400);
  text-transform: uppercase;
}
.thesis__list { margin-top: 10px; display: flex; flex-direction: column; gap: 8px; }

.thesis__row { display: grid; grid-template-columns: 64px 1fr; gap: 14px; align-items: baseline; }
.thesis__k {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--accent);
  white-space: nowrap;
}
.thesis__v { font-size: 15.5px; line-height: 1.78; color: var(--ink-600); }
.thesis__v em {
  font-style: normal;
  color: var(--ink-900);
  font-weight: 600;
  box-shadow: inset 0 -0.5em 0 var(--accent-wash);
}

/* contact strip */
.contactbar { margin-top: 30px; display: flex; flex-wrap: wrap; gap: 8px; }

.chip {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 13px;
  border: 1px solid var(--line-mid);
  background: var(--paper-0);
  font-size: 14.5px;
  color: var(--ink-600);
  transition: all 0.25s var(--ease-out);
}
.chip:hover {
  border-color: var(--line-strong);
  color: var(--ink-900);
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(16,19,21,0.06);
}
.chip svg { width: 12px; height: 12px; flex: none; color: var(--accent); }
.chip__k {
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--ink-400);
  text-transform: uppercase;
}
.chip--copy:hover { border-color: var(--accent-line); color: var(--accent); }
.chip.is-done { border-color: var(--accent); color: var(--accent); background: var(--accent-wash); }

.cue {
  position: absolute;
  left: var(--gut);
  bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--ink-400);
  z-index: 2;
}
.cue__line { width: 46px; height: 1px; background: var(--line-strong); position: relative; overflow: hidden; }
.cue__line::after {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 16px;
  background: var(--accent);
  animation: sweep 2.2s var(--ease-io) infinite;
}
@keyframes sweep {
  0%   { transform: translateX(-18px); }
  100% { transform: translateX(48px); }
}

/* ---------- 8. Section header ---------- */
.sec { padding: 58px 0; }

.sechead {
  display: grid;
  grid-template-columns: auto auto minmax(24px, 1fr) auto;
  align-items: center;
  gap: 16px;
  margin-bottom: 30px;
}
.sechead__no {
  font-family: var(--f-mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--accent);
}
.sechead__title { display: flex; align-items: baseline; gap: 12px; white-space: nowrap; }
.sechead__title h2 {
  font-size: clamp(19px, 2.6vw, 25px);
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--ink-900);
  line-height: 1.2;
}
.sechead__en {
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: var(--ink-400);
  text-transform: uppercase;
}
.sechead__rule { height: 1px; background: var(--line); }
.sechead__count {
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--ink-400);
  white-space: nowrap;
}

/* ---------- 9. Metrics ---------- */
.metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
  background: var(--paper-0);
}
.metric {
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 20px 18px 16px;
  position: relative;
  transition: background 0.3s var(--ease-out);
}
.metric::after {
  content: "";
  position: absolute;
  left: 0; bottom: -1px;
  width: 0; height: 2px;
  background: var(--accent);
  transition: width 0.5s var(--ease-out);
}
.metric:hover { background: var(--paper-1); }
.metric:hover::after { width: 100%; }

.metric__fig {
  display: flex;
  align-items: baseline;
  gap: 2px;
  font-family: var(--f-display);
  font-size: clamp(32px, 4.2vw, 48px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--ink-900);
  font-variant-numeric: tabular-nums;
}
.metric__unit { font-size: 0.42em; font-weight: 600; color: var(--accent); }
.metric__label { margin-top: 11px; font-size: 15px; letter-spacing: 0.04em; color: var(--ink-800); }
.metric__sub {
  margin-top: 3px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.11em;
  color: var(--ink-400);
  text-transform: uppercase;
}

.ledger {
  margin-top: 20px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  border-top: 1px solid var(--line);
}
.ledger__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 14px 9px 0;
  border-bottom: 1px solid var(--line);
}
.ledger__k { font-size: 14.5px; color: var(--ink-500); letter-spacing: 0.03em; }
.ledger__v {
  font-family: var(--f-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--ink-900);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.ledger__v i { font-style: normal; color: var(--accent); font-size: 0.82em; }

/* ---------- 10. Timeline ---------- */
.tl { position: relative; }
.tl::before {
  content: "";
  position: absolute;
  left: 198px; top: 6px; bottom: 6px;
  width: 1px;
  background: linear-gradient(180deg, transparent, var(--line-mid) 6%, var(--line-mid) 94%, transparent);
}

.tl__item {
  position: relative;
  display: grid;
  grid-template-columns: 182px 1fr;
  gap: 32px;
  padding: 0 0 30px;
}
.tl__item:last-child { padding-bottom: 0; }

.tl__period {
  text-align: right;
  padding-top: 2px;
  font-family: var(--f-mono);
  font-size: 14.5px;
  letter-spacing: 0.03em;
  color: var(--ink-500);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.tl__node {
  position: absolute;
  left: 194px;
  top: 7px;
  width: 8px; height: 8px;
  border: 1px solid var(--line-strong);
  background: var(--paper-1);
  transform: rotate(45deg);
  transition: all 0.3s var(--ease-out);
}
.tl__item:first-child .tl__node { border-color: var(--accent); background: var(--accent); }
.tl__item:hover .tl__node {
  border-color: var(--accent);
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-wash);
}

.tl__org { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.tl__org h3 { font-size: 18.5px; font-weight: 700; letter-spacing: 0.04em; color: var(--ink-900); }
.tl__tag {
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: 0.13em;
  padding: 2px 7px;
  border: 1px solid var(--line-mid);
  color: var(--ink-500);
  text-transform: uppercase;
}
.tl__tag--hot { border-color: var(--accent-line); color: var(--accent); background: var(--accent-wash); }

.tl__role { margin-top: 5px; font-size: 15px; color: var(--accent); letter-spacing: 0.06em; }
.tl__desc {
  margin-top: 9px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ink-600);
  max-width: 76ch;
}
.tl__desc + .tl__desc { margin-top: 6px; }

.tl__facts { margin-top: 11px; display: flex; flex-wrap: wrap; gap: 6px; }
.tl__fact {
  font-size: 14px;
  padding: 4px 9px;
  border: 1px solid var(--line);
  background: var(--paper-0);
  color: var(--ink-600);
}
.tl__fact b { color: var(--accent); font-weight: 700; }

/* ---------- 11. Filters ---------- */
.filters { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 18px; }
.filter {
  padding: 6px 13px;
  border: 1px solid var(--line-mid);
  background: var(--paper-0);
  font-size: 14px;
  letter-spacing: 0.05em;
  color: var(--ink-500);
  transition: all 0.22s var(--ease-out);
}
.filter:hover { border-color: var(--line-strong); color: var(--ink-900); }
.filter.is-on { border-color: var(--accent); color: var(--accent-ink); background: var(--accent); }
.filter__n { font-family: var(--f-mono); font-size: 11px; margin-left: 5px; opacity: 0.72; }

/* ---------- 12. Project cards ---------- */
.projects { display: flex; flex-direction: column; gap: 7px; }

.card {
  border: 1px solid var(--line);
  background: var(--paper-0);
  transition: border-color 0.28s var(--ease-out), box-shadow 0.28s var(--ease-out), background 0.28s var(--ease-out);
  animation: cardIn 0.45s var(--ease-out) both;
}
@keyframes cardIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: none; }
}
.card:hover { border-color: var(--line-mid); box-shadow: 0 2px 10px rgba(16,19,21,0.05); }
.card.is-open {
  border-color: var(--accent-line);
  box-shadow: 0 4px 18px rgba(10,107,82,0.08);
  background: linear-gradient(180deg, var(--accent-wash), var(--paper-0) 130px);
}
.card.is-hidden { display: none; }

.card__head {
  display: grid;
  grid-template-columns: 46px 1fr auto;
  align-items: start;
  gap: 16px;
  width: 100%;
  padding: 15px 18px;
  text-align: left;
}
.card__no {
  font-family: var(--f-mono);
  font-size: 13.5px;
  letter-spacing: 0.05em;
  color: var(--ink-300);
  padding-top: 3px;
  transition: color 0.25s var(--ease-out);
}
.card.is-open .card__no, .card:hover .card__no { color: var(--accent); }

.card__top { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.card__title { font-size: 18px; font-weight: 700; letter-spacing: 0.03em; color: var(--ink-900); }
.card__role {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--accent);
  text-transform: uppercase;
}
.card__period {
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--ink-400);
  margin-left: auto;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.card__sum, .card__facts, .card__tags { display: block; }

.card__sum {
  margin-top: 7px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink-600);
  max-width: 82ch;
}

.card__facts { margin-top: 10px; display: flex; flex-wrap: wrap; gap: 12px 18px; }
.card__fact {
  display: flex;
  align-items: baseline;
  gap: 5px;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--ink-400);
}
.card__fact b {
  font-family: var(--f-display);
  font-size: 15.5px;
  font-weight: 700;
  color: var(--ink-900);
  letter-spacing: 0;
  font-variant-numeric: tabular-nums;
}
.card.is-open .card__fact b { color: var(--accent); }

.card__tags { margin-top: 10px; display: flex; flex-wrap: wrap; gap: 5px; }
.card__tag {
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: 0.09em;
  padding: 2px 6px;
  border: 1px solid var(--line);
  color: var(--ink-400);
  background: var(--paper-1);
}

.card__toggle {
  position: relative;
  width: 26px; height: 26px;
  border: 1px solid var(--line-mid);
  flex: none;
  transition: all 0.28s var(--ease-out);
}
.card__toggle::before,
.card__toggle::after {
  content: "";
  position: absolute;
  top: 50%; left: 50%;
  background: var(--ink-500);
  transform: translate(-50%, -50%);
  transition: all 0.28s var(--ease-out);
}
.card__toggle::before { width: 10px; height: 1px; }
.card__toggle::after  { width: 1px; height: 10px; }
.card:hover .card__toggle { border-color: var(--line-strong); }
.card:hover .card__toggle::before,
.card:hover .card__toggle::after { background: var(--accent); }
.card.is-open .card__toggle { border-color: var(--accent); background: var(--accent); }
.card.is-open .card__toggle::after { height: 0; }
.card.is-open .card__toggle::before { background: var(--accent-ink); }

.card__body {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.48s var(--ease-out);
}
.card.is-open .card__body { grid-template-rows: 1fr; }
.card__body > .card__inner { overflow: hidden; min-height: 0; }
.card__inner > .card__pad {
  padding: 18px 18px 20px 80px;
  border-top: 1px solid var(--line);
  opacity: 0;
  transform: translateY(-5px);
  transition: opacity 0.35s var(--ease-out) 0.05s, transform 0.35s var(--ease-out) 0.05s;
}
.card.is-open .card__inner > .card__pad { opacity: 1; transform: none; }

.detail + .detail { margin-top: 15px; }
.detail__k {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 6px;
}
.detail__v { font-size: 15px; line-height: 1.8; color: var(--ink-600); max-width: 84ch; }
.detail__v + .detail__v { margin-top: 5px; }

.detail__ol { counter-reset: d; display: flex; flex-direction: column; gap: 6px; max-width: 84ch; }
.detail__ol li {
  position: relative;
  padding-left: 26px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink-600);
  counter-increment: d;
}
.detail__ol li::before {
  content: counter(d, decimal-leading-zero);
  position: absolute;
  left: 0; top: 0.22em;
  font-family: var(--f-mono);
  font-size: 11.5px;
  color: var(--ink-300);
}

.detail__kv {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 4px 16px;
  max-width: 88ch;
  font-size: 14.5px;
}
.detail__kv dt {
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--ink-400);
  padding-top: 0.3em;
  text-transform: uppercase;
}
.detail__kv dd { color: var(--ink-600); line-height: 1.78; }

.outcome {
  margin-top: 16px;
  padding: 11px 14px;
  border-left: 2px solid var(--accent);
  background: var(--accent-wash);
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}
.outcome__k {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--accent);
  text-transform: uppercase;
  white-space: nowrap;
}
.outcome__v { font-size: 15px; line-height: 1.78; color: var(--ink-800); }

/* ---------- 13. Capability ---------- */
.stack3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
  margin-bottom: 34px;
  background: var(--paper-0);
}
.pillar {
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 20px 18px 22px;
  position: relative;
  overflow: hidden;
}
.pillar__n { font-family: var(--f-mono); font-size: 11.5px; letter-spacing: 0.14em; color: var(--ink-400); }
.pillar__t { margin-top: 22px; font-size: 22px; font-weight: 700; letter-spacing: 0.12em; color: var(--ink-900); }
.pillar__t span { color: var(--accent); }
.pillar__d { margin-top: 9px; font-size: 15px; line-height: 1.8; color: var(--ink-600); }
.pillar__ghost {
  position: absolute;
  right: -10px; top: -16px;
  font-family: var(--f-display);
  font-size: 92px;
  font-weight: 700;
  line-height: 1;
  color: rgba(16, 19, 21, 0.04);
  pointer-events: none;
  user-select: none;
}

.caps { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px 40px; }
.cap__k {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--ink-400);
  text-transform: uppercase;
  padding-bottom: 9px;
  border-bottom: 1px solid var(--line);
}
.cap__k b { color: var(--ink-900); font-weight: 600; letter-spacing: 0.08em; }
.cap__body { margin-top: 12px; }

.bars { display: flex; flex-direction: column; gap: 10px; }
.bar { display: grid; grid-template-columns: 100px 1fr 52px; align-items: center; gap: 12px; }
.bar__name { font-size: 14.5px; color: var(--ink-700); letter-spacing: 0.02em; }
.bar__track { height: 2px; background: var(--line-mid); position: relative; overflow: hidden; }
.bar__fill {
  position: absolute;
  inset: 0 auto 0 0;
  width: var(--pct, 0%);
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}
.bar__fill.is-in { animation: barGrow 1s var(--ease-out) both; }
@keyframes barGrow { from { width: 0; } }
.bar__val {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.09em;
  color: var(--ink-400);
  text-align: right;
  text-transform: uppercase;
}

/* stacked note rows */
.note { padding: 11px 0 13px; border-bottom: 1px solid var(--line); }
.note__k {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--accent);
  text-transform: uppercase;
}
.note__v { margin-top: 5px; font-size: 15px; line-height: 1.78; color: var(--ink-600); }

.block { margin-top: 34px; }
.duo { margin-top: 34px; display: grid; grid-template-columns: 1fr 1fr; gap: 26px 40px; }

.tags { display: flex; flex-wrap: wrap; gap: 5px; }
.tag {
  font-size: 13.5px;
  padding: 4px 9px;
  border: 1px solid var(--line);
  background: var(--paper-0);
  color: var(--ink-600);
  transition: all 0.22s var(--ease-out);
}
.tag:hover { border-color: var(--accent-line); color: var(--accent); background: var(--accent-wash); }
.tag--key { border-color: var(--accent-line); color: var(--accent); background: var(--accent-wash); font-weight: 500; }

/* ---------- 14. Contact ---------- */
.outro { padding: 64px 0 56px; text-align: center; position: relative; }
.outro__cap {
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: 0.22em;
  color: var(--ink-400);
  text-transform: uppercase;
}
.outro__big {
  margin-top: 18px;
  font-size: clamp(26px, 4.6vw, 52px);
  font-weight: 800;
  letter-spacing: 0.05em;
  line-height: 1.28;
  color: var(--ink-900);
}
.outro__big em { font-style: normal; color: var(--accent); }
.outro__sub { margin: 15px auto 0; max-width: 54ch; font-size: 15.5px; line-height: 1.8; color: var(--ink-500); }
.outro__acts { margin-top: 28px; display: flex; flex-wrap: wrap; gap: 9px; justify-content: center; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  border: 1px solid var(--line-mid);
  background: var(--paper-0);
  font-size: 15px;
  letter-spacing: 0.06em;
  color: var(--ink-700);
  transition: all 0.25s var(--ease-out);
}
.btn:hover {
  border-color: var(--line-strong);
  color: var(--ink-900);
  transform: translateY(-1px);
  box-shadow: 0 3px 10px rgba(16,19,21,0.07);
}
.btn--solid {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
  font-weight: 600;
}
.btn--solid:hover { background: var(--accent-2); border-color: var(--accent-2); color: var(--accent-ink); }
.btn svg { width: 13px; height: 13px; }
.btn--solid svg { color: currentColor; }
.btn.is-done { border-color: var(--accent); color: var(--accent); background: var(--accent-wash); }

/* ---------- 15. Footer ---------- */
.foot {
  border-top: 1px solid var(--line);
  padding: 18px 0 26px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.11em;
  color: var(--ink-400);
  text-transform: uppercase;
}

/* ---------- 16. Reveal ---------- */
/* 静止态即可见 —— 入场动画由 JS 在元素还在视口下方时触发。
   任何不跑观察器的渲染（缩略图、无 JS、打印、爬虫）都拿到完整内容，
   数字与进度条也不会停在 0。 */
[data-reveal] { opacity: 1; transform: none; }
[data-reveal].is-in {
  animation: rvIn 0.7s var(--ease-out) both;
  animation-delay: var(--d, 0ms);
}
@keyframes rvIn {
  from { opacity: 0; transform: translateY(18px); }
}

/* ---------- 17. Toast ---------- */
.toast {
  position: fixed;
  left: 50%;
  bottom: 26px;
  transform: translate(-50%, 16px);
  padding: 10px 18px;
  background: var(--ink-900);
  border: 1px solid var(--ink-900);
  font-family: var(--f-mono);
  font-size: 13px;
  letter-spacing: 0.09em;
  color: var(--paper-1);
  opacity: 0;
  pointer-events: none;
  box-shadow: 0 6px 24px rgba(16,19,21,0.2);
  transition: opacity 0.28s var(--ease-out), transform 0.28s var(--ease-out);
  z-index: 80;
}
.toast.is-on { opacity: 1; transform: translate(-50%, 0); }

/* ---------- 18. Responsive ---------- */
@media (max-width: 1180px) {
  :root { --rail: 70px; --gut: 30px; }
  .rail { padding: 20px 12px 16px; align-items: center; }
  .rail__id { flex-direction: column; gap: 2px; align-items: center; }
  .rail__name { font-size: 14.5px; letter-spacing: 0.05em; }
  .rail__role, .rail__meta, .rail__label, .rail__pct span:last-child { display: none; }
  .rail__nav { margin-top: 22px; width: 100%; }
  .rail__link { justify-content: center; padding: 9px 0; gap: 0; }
  .rail__link::before { left: -1px; }
  .rail__print { padding: 9px 0; letter-spacing: 0.08em; }
  .rp-full { display: none; }
  .rp-mini { display: inline; }
  .rail__pct { justify-content: center; }
}

@media (max-width: 900px) {
  :root { --gut: 20px; }

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

  .rail {
    position: sticky;
    top: 0;
    height: auto;
    flex-direction: row;
    align-items: center;
    gap: 14px;
    padding: 9px 18px;
    border-right: none;
    border-bottom: 1px solid var(--line);
    background: rgba(250, 248, 244, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 40;
    overflow-x: auto;
    scrollbar-width: none;
  }
  .rail::-webkit-scrollbar { display: none; }
  .rail__id { flex-direction: row; align-items: baseline; gap: 7px; flex: none; }
  .rail__role { display: none; }
  .rail__nav { margin: 0 0 0 auto; flex-direction: row; gap: 1px; flex: none; }
  .rail__link { padding: 5px 8px; }
  .rail__link::before {
    left: 4px; right: 4px; top: auto; bottom: 0;
    width: auto; height: 1px; transform: none;
    opacity: 0; transition: opacity 0.25s var(--ease-out);
  }
  .rail__link.is-active::before { height: 1px; width: auto; opacity: 1; }
  /* 手机端只保留序号，避免中文标签折行溢出 */
  .rail__label { display: none; }
  .rail__num { font-size: 13px; }
  .rail__foot { display: none; }

  .hero { min-height: auto; padding: 42px 0 40px; }
  .cue { display: none; }

  .sec { padding: 42px 0; }
  .sechead { grid-template-columns: auto 1fr; gap: 12px; margin-bottom: 22px; }
  .sechead__rule, .sechead__count, .sechead__en { display: none; }
  .sechead__title h2 { letter-spacing: 0.09em; font-size: 19px; }

  .metrics { grid-template-columns: repeat(2, 1fr); }
  .metric { padding: 15px 13px 13px; }

  .tl::before { left: 4px; }
  .tl__item { grid-template-columns: 1fr; gap: 8px; padding-left: 22px; padding-bottom: 26px; }
  .tl__period { text-align: left; }
  .tl__node { left: 0; top: 4px; }

  .card__head { grid-template-columns: 32px 1fr auto; gap: 10px; padding: 13px 13px; }
  .card__period { margin-left: 0; width: 100%; }
  .card__inner > .card__pad { padding: 14px 13px 16px; }
  .detail__kv { grid-template-columns: 1fr; gap: 2px 0; }
  .detail__kv dt { padding-top: 8px; }

  .stack3 { grid-template-columns: 1fr; }
  .pillar__t { margin-top: 14px; font-size: 19px; }
  .caps, .duo { grid-template-columns: 1fr; gap: 22px; }
  .block, .duo { margin-top: 26px; }

  .name { gap: 7px; }
  .name__cell { padding: 0.05em 0.07em 0.1em; }
  .handle { gap: 0 10px; }
  .handle__rule { display: none; }
  .thesis__row { grid-template-columns: 1fr; gap: 2px; }
  .thesis { margin-top: 22px; padding-left: 14px; }
  .bar { grid-template-columns: 84px 1fr; }
  .bar__val { display: none; }
}

@media (max-width: 480px) {
  .metrics { grid-template-columns: 1fr; }
  .ledger { grid-template-columns: 1fr; }
  .contactbar { flex-direction: column; align-items: stretch; }
  .chip { justify-content: space-between; }
}

/* ---------- 19. Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
  .hero__canvas { display: none; }
}

/* ---------- 20. Print ---------- */
@media print {
  :root {
    --paper-0: #fff; --paper-1: #fff; --paper-2: #fff;
    --ink-900: #000; --ink-800: #111; --ink-700: #222; --ink-600: #222;
    --ink-500: #444; --ink-400: #555; --ink-300: #777;
    --line: #ddd; --line-mid: #ccc; --line-strong: #999;
    --accent: #0A6B52; --accent-2: #0A6B52;
    --accent-wash: #f0f7f5; --accent-line: #a8cdc4; --accent-ink: #fff;
  }
  @page { margin: 12mm 10mm; }
  html, body { background: #fff !important; color: #000; font-size: 12.5px; line-height: 1.55; }
  .atmos, .rail, .cue, .filters, .toast, .hero__canvas, .pillar__ghost { display: none !important; }
  .shell { display: block; }
  .wrap { max-width: none; padding: 0; }

  .hero { min-height: auto; padding: 0 0 14px; }
  .hero__body { padding-top: 6px; }
  .name { font-size: 40px; gap: 8px; }
  .handle { margin-top: 10px; }
  .thesis { margin-top: 16px; }
  .contactbar { margin-top: 14px; }
  .chip { padding: 5px 10px; font-size: 13px; }

  .sec { padding: 16px 0; }
  .outro { padding: 20px 0; }
  .sechead { margin-bottom: 14px; break-after: avoid; }
  .sechead__title h2 { font-size: 17px; }

  /* 4-up metrics are too wide for A4 — go 2-up so 数字不折行 */
  .metrics { grid-template-columns: repeat(2, 1fr); }
  .metric { padding: 12px 10px; }
  .metric__fig { font-size: 28px; }
  .metric__label { margin-top: 7px; font-size: 14px; }
  .ledger { grid-template-columns: repeat(3, 1fr); margin-top: 12px; }

  .card { break-inside: auto; border-color: #ccc; box-shadow: none !important; }
  .card__head { padding: 12px 0; break-after: avoid; }
  .card__body { grid-template-rows: 1fr !important; }
  .card__inner > .card__pad { opacity: 1 !important; transform: none !important; padding: 0 0 8px; }
  .card.is-hidden { display: block !important; }
  .detail, .outcome, .note, .tl__item, .pillar, .metric, .ledger__row { break-inside: avoid; }
  .detail__v, .detail__ol li, .tl__desc { max-width: none; }
  .outcome { margin-top: 10px; padding: 8px 12px; }

  [data-reveal], .bar__fill {
    animation: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
  .bar__fill { width: var(--pct, 0%) !important; }
  .btn, .outro__acts { display: none !important; }
  .stack3 { grid-template-columns: repeat(3, 1fr); }
  .pillar { padding: 12px 10px 14px; }
  .pillar__t { margin-top: 8px; font-size: 17px; }
  .caps, .duo { grid-template-columns: repeat(2, 1fr); gap: 16px 24px; }
  .block, .duo { margin-top: 18px; }
  .tl__item { padding-bottom: 16px; }
  .foot { padding: 12px 0 0; }
  a[href^="http"]::after { content: " (" attr(href) ")"; font-size: 11px; color: #666; }
}