:root {
  --paper: #f2ecdf;
  --paper-deep: #e7ddca;
  --ink: #171713;
  --muted: #6f6a60;
  --line: rgba(23, 23, 19, 0.2);
  --vermillion: #b43a24;
  --serif: "Noto Serif SC", "Songti SC", STSong, SimSun, Georgia, serif;
  --sans: var(--font-geist-sans), "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--paper); }
body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 9;
  pointer-events: none;
  opacity: 0.11;
  background-image:
    repeating-radial-gradient(circle at 0 0, transparent 0, rgba(15, 14, 10, 0.12) 0.5px, transparent 1px, transparent 4px),
    linear-gradient(105deg, rgba(255, 255, 255, 0.14), transparent 45%);
  background-size: 5px 5px, 100% 100%;
  mix-blend-mode: multiply;
}
::selection { color: var(--paper); background: var(--vermillion); }
a { color: inherit; text-decoration: none; }
.page { min-height: 100vh; overflow: hidden; }
.shell { width: min(1456px, calc(100% - 96px)); margin: 0 auto; }
.topbar {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  height: 104px;
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: baseline; gap: 14px; letter-spacing: -0.02em; }
.brand strong { font: 600 22px/1 var(--serif); }
.brand span { color: var(--muted); font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; }
.edition { color: var(--muted); font-size: 10px; letter-spacing: 0.2em; text-transform: uppercase; }
nav { display: flex; justify-self: end; gap: 35px; font-size: 12px; }
nav a { position: relative; padding: 12px 0; }
nav a::after {
  content: "";
  position: absolute;
  bottom: 5px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--vermillion);
  transition: width 250ms ease;
}
nav a:hover::after, nav a:focus-visible::after { width: 100%; }
.hero {
  display: grid;
  grid-template-columns: 118px minmax(650px, 1.68fr) minmax(370px, 0.83fr);
  grid-template-rows: auto 1fr;
  gap: 22px 38px;
  min-height: 676px;
  padding: 44px 0 38px;
  border-bottom: 1px solid var(--line);
}
.folio {
  display: flex;
  grid-row: 1 / 3;
  align-items: center;
  gap: 18px;
  padding-right: 22px;
  border-right: 1px solid var(--line);
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
}
.folio i { display: block; width: 1px; height: 74px; background: var(--vermillion); }
.kicker {
  display: flex;
  grid-column: 2;
  align-items: center;
  gap: 12px;
  color: var(--vermillion);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.kicker::before { content: ""; width: 32px; height: 1px; background: currentColor; }
.identity { position: relative; grid-column: 2; align-self: end; padding-bottom: 9px; }
h1 {
  margin: 0;
  font: 500 clamp(82px, 7.2vw, 120px) / 0.88 var(--serif);
  letter-spacing: -0.075em;
}
h1 .red { color: var(--vermillion); font-style: italic; font-weight: 400; }
.descriptor {
  display: grid;
  grid-template-columns: 190px 1fr;
  align-items: start;
  gap: 34px;
  margin-top: 32px;
}
.descriptor .index { padding-top: 6px; color: var(--muted); font-size: 10px; letter-spacing: 0.18em; }
.descriptor p { max-width: 595px; margin: 0; font: 400 23px/1.55 var(--serif); letter-spacing: 0.01em; }
.portrait {
  position: relative;
  grid-column: 3;
  grid-row: 1 / 3;
  align-self: stretch;
  min-height: 550px;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 34% 22%, rgba(255, 245, 220, 0.72), transparent 27%),
    radial-gradient(ellipse at 72% 38%, rgba(207, 119, 93, 0.34), transparent 34%),
    linear-gradient(165deg, #c9c7c2 0 40%, #d9b8a2 70%, #d6a27f 100%);
}
.portrait::before {
  content: "Y";
  position: absolute;
  bottom: -103px;
  left: -20px;
  color: rgba(242, 236, 223, 0.83);
  font: 500 430px/0.8 var(--serif);
  letter-spacing: -0.12em;
}
.portrait::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(145deg, transparent 30%, rgba(87, 70, 46, 0.15) 30.2%, transparent 30.5%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.28), transparent 45%, rgba(180, 58, 36, 0.09));
}
.portrait-label {
  position: absolute;
  z-index: 1;
  top: 22px;
  right: 24px;
  left: 24px;
  display: flex;
  justify-content: space-between;
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.portrait-note { position: absolute; z-index: 1; right: 24px; bottom: 23px; width: 170px; font: 400 13px/1.55 var(--serif); text-align: right; }
.seal {
  position: absolute;
  z-index: 2;
  top: 52%;
  right: -18px;
  display: grid;
  place-items: center;
  width: 74px;
  height: 74px;
  color: var(--paper);
  background: var(--vermillion);
  font: 500 26px/1 var(--serif);
  transform: rotate(5deg);
}
.lower {
  display: grid;
  grid-template-columns: 118px 1.15fr 0.8fr 1fr;
  gap: 38px;
  min-height: 220px;
  padding: 31px 0 27px;
}
.lower .blank { border-right: 1px solid var(--line); }
.section-no { margin-bottom: 18px; color: var(--vermillion); font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase; }
.intro { padding-right: 52px; }
.intro p { max-width: 390px; margin: 0; font: 400 16px/1.7 var(--serif); }
.practice { padding-left: 32px; border-left: 1px solid var(--line); }
.practice ul { margin: 0; padding: 0; list-style: none; }
.practice li { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px solid var(--line); font: 500 12px/1.4 var(--sans); }
.practice li span:last-child { color: var(--muted); font-size: 10px; }
.contact { display: grid; grid-template-columns: 1fr 88px; gap: 22px; padding-left: 32px; border-left: 1px solid var(--line); }
.contact h2 { margin: 0 0 11px; font: 500 25px/1.2 var(--serif); letter-spacing: -0.03em; }
.email { display: inline-block; padding-bottom: 4px; border-bottom: 1px solid var(--vermillion); color: var(--vermillion); font-size: 12px; }
.cta { display: flex; align-items: center; width: max-content; gap: 14px; margin-top: 14px; font-size: 12px; font-weight: 600; }
.cta b {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  color: var(--paper);
  background: var(--ink);
  font-size: 14px;
  transition: transform 250ms, background 250ms;
}
.cta:hover b, .cta:focus-visible b { background: var(--vermillion); transform: translateX(4px); }
.qr-placeholder {
  display: grid;
  place-items: center;
  width: 88px;
  height: 88px;
  border: 1px solid var(--line);
  color: var(--muted);
  background: rgba(255, 255, 255, 0.1);
  font-size: 8px;
  line-height: 1.45;
  letter-spacing: 0.08em;
  text-align: center;
}
.cloud {
  position: absolute;
  z-index: 1;
  border-radius: 999px;
  background: rgba(255, 246, 226, 0.38);
  filter: blur(1px);
}
.cloud::before,
.cloud::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  background: inherit;
}
.cloud-one { top: 27%; left: 10%; width: 160px; height: 34px; }
.cloud-one::before { left: 28px; bottom: 4px; width: 70px; height: 70px; }
.cloud-one::after { right: 18px; bottom: 2px; width: 48px; height: 48px; }
.cloud-two { top: 46%; right: 7%; width: 130px; height: 25px; opacity: 0.55; }
.cloud-two::before { left: 18px; bottom: 2px; width: 50px; height: 50px; }
.cloud-two::after { right: 12px; bottom: 1px; width: 36px; height: 36px; }

.editorial-section {
  position: relative;
  display: grid;
  grid-template-columns: 118px 1fr;
  column-gap: 38px;
  padding: 92px 0;
  border-bottom: 1px solid var(--line);
}
.margin-label {
  align-self: stretch;
  padding-right: 22px;
  border-right: 1px solid var(--line);
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
}
.section-eyebrow {
  margin-bottom: 18px;
  color: var(--vermillion);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.editorial-section h2 {
  margin: 0;
  font: 500 clamp(38px, 4.2vw, 66px) / 1.08 var(--serif);
  letter-spacing: -0.045em;
}
.about-section {
  grid-template-columns: 118px minmax(360px, 1.05fr) minmax(330px, 0.75fr);
  row-gap: 52px;
}
.about-heading { padding-right: 7vw; }
.about-copy {
  padding-left: 42px;
  border-left: 1px solid var(--line);
  font: 400 17px/1.85 var(--serif);
}
.about-copy p { margin: 0 0 20px; }
.about-copy p:last-child { margin-bottom: 0; }
.profile-facts {
  grid-column: 2 / 4;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin: 0;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--line);
}
.profile-facts div { padding: 20px 24px 22px 0; border-right: 1px solid var(--line); }
.profile-facts div:not(:first-child) { padding-left: 24px; }
.profile-facts div:last-child { border-right: 0; }
.profile-facts dt { margin-bottom: 10px; color: var(--vermillion); font-size: 10px; letter-spacing: 0.12em; }
.profile-facts dd { margin: 0; font: 500 14px/1.55 var(--serif); }

.trajectory-section { grid-template-columns: 118px minmax(320px, 0.72fr) 1fr; row-gap: 58px; }
.trajectory-intro { padding-right: 6vw; }
.trajectory-list { border-top: 1px solid var(--ink); }
.trajectory-list article { display: grid; grid-template-columns: 48px minmax(145px, 0.55fr) 1fr; gap: 20px; padding: 25px 0; border-bottom: 1px solid var(--line); }
.trajectory-list article > span { color: var(--vermillion); font-size: 10px; letter-spacing: 0.13em; }
.trajectory-list h3 { margin: 0; font: 500 20px/1.35 var(--serif); }
.trajectory-list p { margin: 0; color: var(--muted); font: 400 14px/1.75 var(--serif); }
.trajectory-section blockquote { grid-column: 2 / 4; margin: 0; padding: 34px 5vw; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); color: var(--vermillion); font: italic 400 clamp(24px, 2.5vw, 38px)/1.5 var(--serif); text-align: center; }

.section-lead {
  display: grid;
  grid-template-columns: 1fr minmax(300px, 0.55fr);
  align-items: end;
  gap: 56px;
}
.section-lead > p { margin: 0; color: var(--muted); font: 400 16px/1.75 var(--serif); }
.section-lead.compact { grid-template-columns: 1fr; }
.experiment-grid {
  grid-column: 2;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 58px;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}
.experiment { min-height: 310px; padding: 24px 30px 30px; border-right: 1px solid var(--line); }
.experiment:last-child { border-right: 0; }
.experiment-top { display: flex; justify-content: space-between; color: var(--muted); font-size: 10px; letter-spacing: 0.14em; }
.experiment-top span:last-child { color: var(--vermillion); }
.experiment-tag { margin-top: 66px; color: var(--vermillion); font-size: 10px; font-weight: 600; letter-spacing: 0.16em; }
.experiment h3 { margin: 15px 0 14px; font: 500 25px/1.25 var(--serif); }
.experiment p { max-width: 310px; margin: 0; color: var(--muted); font: 400 14px/1.75 var(--serif); }
.lab-note {
  grid-column: 2;
  display: grid;
  grid-template-columns: 160px 1fr auto;
  align-items: center;
  gap: 28px;
  padding: 25px 0;
  border-bottom: 1px solid var(--line);
}
.lab-note span, .lab-note em { color: var(--muted); font-size: 10px; font-style: normal; letter-spacing: 0.16em; }
.lab-note strong { font: 500 16px/1.4 var(--serif); }
.lab-note em { color: var(--vermillion); }
.research-block { grid-column: 2; display: grid; grid-template-columns: 230px 1fr; gap: 42px; margin-top: 66px; padding-top: 30px; border-top: 1px solid var(--ink); }
.research-heading span { display: block; margin-bottom: 16px; color: var(--vermillion); font-size: 10px; letter-spacing: 0.16em; }
.research-heading strong { font: 500 22px/1.4 var(--serif); }
.research-block ol { display: grid; grid-template-columns: 1fr 1fr; margin: 0; padding: 0; list-style: none; }
.research-block li { display: grid; grid-template-columns: 35px 1fr; gap: 10px; min-height: 92px; padding: 17px 24px 17px 0; border-top: 1px solid var(--line); }
.research-block li:nth-child(-n+2) { border-top: 0; padding-top: 0; }
.research-block li:nth-child(even) { padding-left: 24px; border-left: 1px solid var(--line); }
.research-block li span { padding-top: 4px; color: var(--vermillion); font-size: 10px; }
.research-block li p { margin: 0; font: 500 14px/1.65 var(--serif); }

.capability-list { grid-column: 2; margin-top: 50px; border-top: 1px solid var(--ink); }
.capability {
  display: grid;
  grid-template-columns: 70px minmax(220px, 0.55fr) 1fr;
  align-items: center;
  gap: 28px;
  padding: 31px 0;
  border-bottom: 1px solid var(--line);
}
.cap-index { color: var(--vermillion); font: 400 34px/1 var(--serif); }
.capability h3 { margin: 0 0 5px; font: 500 24px/1.2 var(--serif); }
.capability div > span { color: var(--muted); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; }
.capability p { max-width: 640px; margin: 0; color: var(--muted); font: 400 15px/1.75 var(--serif); }
.process-block {
  grid-column: 2;
  display: grid;
  grid-template-columns: 210px 1fr;
  gap: 40px;
  margin-top: 68px;
  padding: 36px 0;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}
.process-block ol { display: grid; grid-template-columns: repeat(5, 1fr); margin: 0; padding: 0; list-style: none; }
.process-block li { position: relative; min-height: 84px; padding: 0 20px; border-left: 1px solid var(--line); }
.process-block li span { display: block; margin-bottom: 22px; color: var(--vermillion); font-size: 10px; }
.process-block li strong { font: 500 13px/1.4 var(--serif); }
.principles-block { grid-column: 2; display: grid; grid-template-columns: minmax(240px, 0.58fr) 1fr; gap: 55px; margin-top: 72px; }
.principles-block h3 { max-width: 360px; margin: 0; font: 500 31px/1.3 var(--serif); }
.principles-list { border-top: 1px solid var(--ink); }
.principles-list article { display: grid; grid-template-columns: 42px 1fr; gap: 15px; padding: 20px 0; border-bottom: 1px solid var(--line); }
.principles-list article > span { color: var(--vermillion); font-size: 10px; }
.principles-list strong { font: 500 17px/1.3 var(--serif); }
.principles-list p { margin: 7px 0 0; color: var(--muted); font: 400 13px/1.7 var(--serif); }

.visual-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 64px; }
.sky-panel {
  position: relative;
  min-height: 560px;
  overflow: hidden;
  padding: 36px;
  background:
    radial-gradient(ellipse at 22% 20%, rgba(255, 248, 229, 0.72), transparent 22%),
    linear-gradient(165deg, #aaaead 0 28%, #d6b4a5 56%, #cc7c60 78%, #8f5647 100%);
}
.sky-panel::before {
  content: "Y";
  position: absolute;
  right: -18px;
  bottom: -95px;
  color: rgba(242, 236, 223, 0.22);
  font: 500 420px/0.8 var(--serif);
}
.sky-panel > div { position: absolute; z-index: 2; right: 36px; bottom: 34px; left: 36px; }
.sky-panel > div span { display: block; margin-bottom: 18px; color: rgba(23, 23, 19, 0.62); font-size: 10px; letter-spacing: 0.16em; }
.sky-panel > div strong { font: 500 36px/1.28 var(--serif); }
.sun { position: absolute; top: 105px; right: 18%; width: 72px; height: 72px; border-radius: 50%; background: rgba(180, 58, 36, 0.8); box-shadow: 0 0 0 18px rgba(255, 229, 201, 0.12); }
.sky-cloud { position: absolute; z-index: 1; height: 42px; border-radius: 999px; background: rgba(255, 243, 221, 0.48); }
.sky-cloud::before, .sky-cloud::after { content: ""; position: absolute; bottom: 2px; border-radius: 50%; background: inherit; }
.sky-cloud-one { top: 34%; left: 8%; width: 240px; }
.sky-cloud-one::before { left: 42px; width: 96px; height: 96px; }
.sky-cloud-one::after { right: 28px; width: 68px; height: 68px; }
.sky-cloud-two { top: 52%; right: -25px; width: 190px; opacity: 0.6; }
.sky-cloud-two::before { left: 25px; width: 75px; height: 75px; }
.sky-cloud-two::after { right: 22px; width: 55px; height: 55px; }
.visual-copy { align-self: center; }
.visual-copy h2 { max-width: 560px; }
.visual-copy p { max-width: 590px; margin: 28px 0 0; color: var(--muted); font: 400 16px/1.85 var(--serif); }
.interest-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 40px; }
.interest-row span { padding: 9px 12px; border: 1px solid var(--line); font-size: 9px; letter-spacing: 0.12em; }

.notes-section { grid-template-columns: 118px minmax(330px, 0.68fr) 1fr; row-gap: 56px; }
.notes-heading { padding-right: 6vw; }
.notes-heading p { max-width: 470px; margin: 28px 0 0; color: var(--muted); font: 400 15px/1.8 var(--serif); }
.notes-list { border-top: 1px solid var(--ink); }
.notes-list article { display: grid; grid-template-columns: 92px 1fr 130px 70px; align-items: center; gap: 18px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.notes-list article > span, .notes-list small, .notes-list em { font-size: 9px; letter-spacing: 0.12em; font-style: normal; }
.notes-list article > span { color: var(--vermillion); }
.notes-list h3 { margin: 0; font: 500 18px/1.35 var(--serif); }
.notes-list small { color: var(--muted); }
.notes-list em { justify-self: end; color: var(--vermillion); }
.now-board { grid-column: 2 / 4; display: grid; grid-template-columns: 150px repeat(3, 1fr); gap: 0; padding: 0; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.now-board > span { padding: 24px 20px 24px 0; color: var(--vermillion); font-size: 10px; letter-spacing: 0.15em; }
.now-board div { padding: 24px 28px; border-left: 1px solid var(--line); }
.now-board strong { font: 500 14px/1.4 var(--serif); }
.now-board p { margin: 9px 0 0; color: var(--muted); font: 400 12px/1.65 var(--serif); }

.collab-section { grid-template-columns: 118px 1fr minmax(280px, 0.55fr) auto; gap: 38px; align-items: start; }
.collab-main h2 { max-width: 680px; }
.collab-main > p { max-width: 680px; margin: 28px 0; color: var(--muted); font: 400 16px/1.8 var(--serif); }
.mail-button {
  display: inline-flex;
  align-items: center;
  gap: 24px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--vermillion);
  color: var(--vermillion);
  font-size: 14px;
  font-weight: 600;
}
.mail-button b { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; color: var(--paper); background: var(--ink); transition: 250ms ease; }
.mail-button:hover b, .mail-button:focus-visible b { background: var(--vermillion); transform: translateX(4px); }
.collab-types { border-top: 1px solid var(--ink); }
.collab-types div { display: grid; grid-template-columns: 34px 1fr; gap: 6px 14px; padding: 20px 0; border-bottom: 1px solid var(--line); }
.collab-types span { grid-row: 1 / 3; color: var(--vermillion); font-size: 10px; }
.collab-types strong { font: 500 15px/1.3 var(--serif); }
.collab-types small { color: var(--muted); font-size: 10px; }
.collab-brief { grid-column: 2 / 4; display: grid; grid-template-columns: 145px 1fr 145px 1fr; gap: 22px; margin-top: 26px; padding-top: 24px; border-top: 1px solid var(--line); }
.collab-brief span { color: var(--vermillion); font-size: 9px; letter-spacing: 0.14em; }
.collab-brief p { margin: 0; color: var(--muted); font: 400 12px/1.7 var(--serif); }
.qr-group { display: grid; grid-template-columns: 88px; gap: 12px; }
.changelog { display: flex; align-items: center; flex-wrap: wrap; gap: 18px; padding: 28px 0; border-bottom: 1px solid var(--line); font-size: 10px; letter-spacing: 0.08em; }
.changelog > span { color: var(--vermillion); margin-right: auto; }
.changelog p, .changelog i { margin: 0; color: var(--muted); font-style: normal; }
footer { display: flex; justify-content: space-between; gap: 30px; padding: 28px 0 34px; color: var(--muted); font-size: 10px; letter-spacing: 0.1em; }

@media (max-width: 1200px) {
  .hero { grid-template-columns: 80px minmax(520px, 1.5fr) minmax(320px, 0.8fr); gap: 22px 28px; }
  .lower { grid-template-columns: 80px 1fr 0.8fr 1fr; gap: 28px; }
  .editorial-section { grid-template-columns: 80px 1fr; gap: 28px; }
  .about-section { grid-template-columns: 80px 1fr 0.8fr; }
  .trajectory-section, .notes-section { grid-template-columns: 80px 0.72fr 1fr; }
  .collab-section { grid-template-columns: 80px 1fr 0.7fr; }
  .collab-section .qr-group { grid-column: 2 / 4; grid-template-columns: repeat(2, 88px); }
}
@media (max-width: 980px) {
  .shell { width: min(calc(100% - 40px), 720px); }
  .topbar { grid-template-columns: 1fr auto; height: 86px; }
  .edition { display: none; }
  nav { gap: 18px; }
  .hero { grid-template-columns: 1fr; grid-template-rows: auto; min-height: 0; gap: 28px; }
  .folio { display: none; }
  .kicker, .identity, .portrait { grid-column: 1; grid-row: auto; }
  h1 { font-size: clamp(63px, 16vw, 105px); }
  .portrait { min-height: 440px; }
  .lower { grid-template-columns: 1fr; gap: 28px; }
  .lower .blank { display: none; }
  .practice, .contact { padding: 26px 0 0; border-top: 1px solid var(--line); border-left: none; }
  .editorial-section,
  .about-section,
  .trajectory-section,
  .notes-section,
  .collab-section { grid-template-columns: 1fr; padding: 68px 0; }
  .margin-label { display: none; }
  .about-copy { padding: 30px 0 0; border-top: 1px solid var(--line); border-left: 0; }
  .profile-facts { grid-column: 1; grid-template-columns: 1fr 1fr; }
  .trajectory-list { margin-top: 38px; }
  .trajectory-section blockquote, .now-board { grid-column: 1; }
  .profile-facts div:nth-child(2) { border-right: 0; }
  .profile-facts div:nth-child(3) { padding-left: 0; }
  .section-lead { grid-template-columns: 1fr; align-items: start; }
  .experiment-grid, .lab-note, .research-block, .capability-list, .process-block, .principles-block { grid-column: 1; }
  .experiment-grid { grid-template-columns: 1fr; }
  .experiment { min-height: 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .experiment:last-child { border-bottom: 0; }
  .experiment-tag { margin-top: 38px; }
  .visual-grid { grid-template-columns: 1fr; gap: 48px; }
  .notes-list { margin-top: 38px; }
  .now-board { grid-template-columns: 1fr 1fr; }
  .now-board > span { grid-column: 1 / -1; }
  .now-board div { border-top: 1px solid var(--line); }
  .collab-brief { grid-column: 1; }
  .sky-panel { min-height: 480px; }
  .collab-section .qr-group { grid-column: 1; grid-template-columns: repeat(2, 88px); }
}
@media (max-width: 620px) {
  .topbar { align-items: start; height: 122px; padding-top: 22px; }
  .brand span { display: none; }
  nav { grid-column: 1 / -1; justify-self: start; gap: 16px; }
  .hero { padding-top: 30px; }
  .descriptor { grid-template-columns: 1fr; gap: 12px; }
  .descriptor p { font-size: 19px; }
  .contact { grid-template-columns: 1fr 76px; }
  .qr-placeholder { width: 76px; height: 76px; }
  .topbar nav { max-width: 100%; overflow-x: auto; padding-bottom: 4px; }
  .topbar nav a { flex: 0 0 auto; }
  .editorial-section h2 { font-size: 38px; }
  .profile-facts { grid-template-columns: 1fr; }
  .profile-facts div,
  .profile-facts div:not(:first-child),
  .profile-facts div:nth-child(3) { padding: 17px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .lab-note { grid-template-columns: 1fr; gap: 8px; }
  .trajectory-list article { grid-template-columns: 35px 1fr; }
  .trajectory-list p { grid-column: 2; }
  .research-block, .principles-block { grid-template-columns: 1fr; }
  .research-block ol { grid-template-columns: 1fr; }
  .research-block li, .research-block li:nth-child(-n+2), .research-block li:nth-child(even) { min-height: 0; padding: 16px 0; border-top: 1px solid var(--line); border-left: 0; }
  .capability { grid-template-columns: 40px 1fr; }
  .capability p { grid-column: 2; }
  .process-block { grid-template-columns: 1fr; }
  .process-block ol { grid-template-columns: 1fr; }
  .process-block li { display: grid; grid-template-columns: 35px 1fr; min-height: 0; padding: 13px 0; border-top: 1px solid var(--line); border-left: 0; }
  .process-block li span { margin: 0; }
  .sky-panel { min-height: 430px; padding: 24px; }
  .sky-panel > div { right: 24px; bottom: 24px; left: 24px; }
  .sky-panel > div strong { font-size: 28px; }
  .notes-list article { grid-template-columns: 74px 1fr auto; gap: 12px; }
  .notes-list small { grid-column: 2; }
  .notes-list em { grid-column: 3; grid-row: 1 / 3; }
  .now-board { grid-template-columns: 1fr; }
  .now-board > span { grid-column: 1; }
  .now-board div { padding-left: 0; border-left: 0; }
  .collab-brief { grid-template-columns: 1fr; gap: 8px; }
  .collab-brief p { margin-bottom: 12px; }
  .collab-types { margin-top: 26px; }
  footer { flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; }
}