/* sections.css — the narrative sections below the hero, shared by every page. */

:root { --paper-2: #f8f4ea; --ink-2: #0c1d2e; }
html[data-lang="zh"] {
  --font-display: "Noto Serif SC", "Cormorant", "Songti SC", serif;
  --font-text: "Noto Sans SC", "Hanken Grotesk", "PingFang SC", "Microsoft YaHei", sans-serif;
}
html[data-lang="zh"] .hero__mark,
html[data-lang="zh"] .brand__name { font-family: "Cormorant", "Cormorant Garamond", Garamond, serif; }
html[data-lang="zh"] .hero__title { font-style: normal; letter-spacing: 0.02em; }

.lang {
  padding: 0.35rem 0.55rem;
  border: 1px solid var(--rule);
  border-radius: 2px;
  background: transparent;
  font: 500 0.8rem/1 var(--font-text);
  color: var(--ink);
  cursor: pointer;
}
.lang:hover { border-color: var(--prussian); }

.band {
  padding-block: clamp(4rem, 9vw, 7.5rem);
  padding-left: max(var(--gutter), env(safe-area-inset-left, 0px));
  padding-right: max(var(--gutter), env(safe-area-inset-right, 0px));
}
.band--paper { background: var(--paper-2); border-block: 1px solid var(--rule); }
.band--ink { background: var(--ink-2); color: #eae3d4; }
.band--ink .kicker { color: #e3a874; }
.band__inner { max-width: 72rem; margin: 0 auto; }
.band h2 {
  margin: 0;
  max-width: 44rem;
  font: 500 clamp(2rem, 4vw, 3.1rem)/1.08 var(--font-display);
  letter-spacing: -0.01em;
  text-wrap: balance;
}
.kicker {
  margin: 0 0 0.9rem;
  font: 500 0.72rem/1 var(--font-mono);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--solar);
}
.lede { margin: 1rem 0 0; max-width: 38rem; color: var(--slate); }
.band--ink .lede { color: #c9c1b2; }
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.35fr); gap: clamp(2rem, 6vw, 5rem); }
.prose p { margin: 0 0 1rem; color: var(--slate); max-width: 40rem; }
.prose p:first-child { color: var(--ink); font-size: 1.08rem; }

.faults { list-style: none; margin: 1.8rem 0 0; padding: 0; display: grid; gap: 1.1rem; }
.faults li { padding-left: 1.1rem; border-left: 2px solid var(--solar); }
.faults h3 { margin: 0; font: 500 1.25rem/1.2 var(--font-display); }
.faults p { margin: 0.3rem 0 0; font-size: 0.95rem; color: var(--slate); }

/* platform layers */
.layers {
  list-style: none; margin: 2.6rem 0 0; padding: 0;
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px;
  background: var(--rule); border: 1px solid var(--rule);
}
.layer { background: var(--ivory); padding: clamp(1.4rem, 3vw, 2.2rem); }
.layer__no { font: 500 0.8rem/1 var(--font-mono); color: var(--solar); letter-spacing: 0.1em; }
.layer h3 { margin: 0.7rem 0 0; font: 500 1.65rem/1.15 var(--font-display); }
.layer > p { margin: 0.7rem 0 0; color: var(--slate); font-size: 0.97rem; }
.layer dl { margin: 1.2rem 0 0; display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 0.45rem 0.9rem; font-size: 0.86rem; }
.layer dt { font: 500 0.7rem/1.6 var(--font-mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--prussian); }
.layer dd { margin: 0; color: var(--ink); }

/* comparison table */
.table-wrap { margin-top: 2.4rem; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.compare { width: 100%; min-width: 40rem; border-collapse: collapse; font-size: 0.93rem; }
.compare th, .compare td { text-align: left; vertical-align: top; padding: 0.95rem 1rem; border-bottom: 1px solid var(--rule); }
.compare thead th { font: 500 0.72rem/1.3 var(--font-mono); letter-spacing: 0.14em; text-transform: uppercase; color: var(--slate); }
.compare tbody th { font: 500 1.08rem/1.25 var(--font-display); width: 18%; }
.compare td { color: var(--slate); }
.compare .is-us { background: rgba(23, 59, 92, 0.06); color: var(--ink); }
.compare thead .is-us { color: var(--prussian); }

/* episode steps (dark band) */
.steps { list-style: none; margin: 2.6rem 0 2.4rem; padding: 0; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 1.2rem; counter-reset: s; }
.steps li { position: relative; padding-top: 1.1rem; border-top: 1px solid rgba(234, 227, 212, 0.25); }
.steps__no { font: 500 0.8rem/1 var(--font-mono); color: #e3a874; }
.steps h3 { margin: 0.6rem 0 0; font: 500 1.25rem/1.2 var(--font-display); color: #f4eee2; }
.steps p { margin: 0.5rem 0 0; font-size: 0.9rem; color: #c9c1b2; }
.btn--light { border-color: #eae3d4; color: #f4eee2; background: transparent; }
.btn--light:hover { background: rgba(234, 227, 212, 0.1); }

/* evidence */
.stats { list-style: none; margin: 2.4rem 0 0; padding: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; background: var(--rule); border: 1px solid var(--rule); }
.stats li { background: var(--ivory); padding: 1.5rem 1.3rem; display: grid; gap: 0.5rem; align-content: start; }
.stats strong { font: 500 clamp(2rem, 3.4vw, 2.7rem)/1 var(--font-display); color: var(--prussian); font-variant-numeric: tabular-nums; }
.stats span { font-size: 0.86rem; color: var(--slate); }
.note { margin: 1.2rem 0 0; font: 400 0.78rem/1.5 var(--font-mono); color: var(--slate); }

/* roadmap */
.roadmap { list-style: none; margin: 2.4rem 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.5rem; }
.roadmap li { padding-top: 1.1rem; border-top: 2px solid var(--rule); }
.roadmap li.is-now { border-top-color: var(--solar); }
.roadmap h3 { margin: 0; font: 500 1.5rem/1.15 var(--font-display); }
.roadmap p { margin: 0.6rem 0 0; color: var(--slate); font-size: 0.95rem; }

/* founder + contact */
.founder-card__role { margin: 0.5rem 0 1rem; font: italic 500 1.2rem/1.3 var(--font-display); color: var(--prussian); }
.founder-card p { color: var(--slate); max-width: 30rem; }
.textlink { color: var(--prussian); text-decoration: none; border-bottom: 1px solid var(--solar); padding-bottom: 2px; }
.contact-card { padding: clamp(1.5rem, 3vw, 2.4rem); background: var(--paper-2); border: 1px solid var(--rule); align-self: start; }
.contact-card h2 { font-size: clamp(1.7rem, 3vw, 2.3rem); }
.contact-card p { color: var(--slate); }
.mono { font: 400 0.85rem/1.5 var(--font-mono); }
.mono a { text-decoration: none; border-bottom: 1px solid var(--rule); }

@media (max-width: 960px) {
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 760px) {
  .split, .layers, .roadmap { grid-template-columns: minmax(0, 1fr); }
  .steps { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 420px) {
  .stats { grid-template-columns: minmax(0, 1fr); }
}

/* keep the language switch visible when the hero nav collapses on small screens */
@container hero (max-width: 760px) {
  .nav__links li:has(> .lang) { display: list-item; }
}

/* plain pages (founder, demo shell): a slim painted band instead of the full hero */
.pagehead {
  position: relative;
  padding-bottom: clamp(3rem, 8vw, 5.5rem);
  background:
    linear-gradient(to bottom, rgb(var(--wash-rgb) / 0.55), rgb(var(--wash-rgb) / 0.92) 70%, var(--ivory)),
    url("../assets/painting.jpg") 52% 38% / cover no-repeat;
}
.pagehead .nav { padding-block: 1.4rem; }
.pagehead__inner { max-width: 72rem; margin: clamp(2.5rem, 7vw, 5rem) auto 0; padding-inline: var(--gutter); }
.pagehead h1 { margin: 0; font: 500 clamp(2.6rem, 6vw, 4.6rem)/1 var(--font-display); letter-spacing: -0.02em; }
.pagehead .role { margin: 0.8rem 0 0; font: italic 500 clamp(1.2rem, 2.2vw, 1.6rem)/1.3 var(--font-display); color: var(--prussian); }
.placeholder { margin: 1.4rem 0 0; padding: 0.9rem 1.1rem; max-width: 42rem; border: 1px dashed var(--prussian); font-size: 0.92rem; color: var(--slate); background: rgb(var(--wash-rgb) / 0.7); }
.cols { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2rem 4rem; }
.cols section h2 { font-size: clamp(1.5rem, 2.6vw, 2rem); }
.cols section p { color: var(--slate); }
@media (max-width: 760px) { .cols { grid-template-columns: minmax(0, 1fr); } }

/* request-access dialog */
.req { width: min(34rem, calc(100vw - 2rem)); padding: 0; border: 1px solid var(--rule); border-radius: 3px; background: var(--ivory); color: var(--ink); box-shadow: 0 30px 80px rgba(11, 33, 53, 0.25); }
.req::backdrop { background: rgba(11, 33, 53, 0.45); }
.req__form { display: grid; gap: 0.75rem; padding: clamp(1.3rem, 4vw, 2rem); }
.req h2 { margin: 0; font: 500 1.7rem/1.15 var(--font-display); }
.req__d { margin: 0 0 0.3rem; font-size: 0.9rem; color: var(--slate); }
.req label { display: grid; gap: 0.3rem; font-size: 0.82rem; color: var(--slate); }
.req input, .req select, .req textarea { font: 400 0.95rem/1.4 var(--font-text); color: var(--ink); background: #fff; border: 1px solid var(--rule); border-radius: 2px; padding: 0.55rem 0.65rem; }
.req input:focus, .req select:focus, .req textarea:focus { outline: 2px solid var(--solar); outline-offset: 0; border-color: transparent; }
.req__hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.req__status { margin: 0; min-height: 1.2em; font-size: 0.86rem; color: var(--prussian); }
.req__status.is-error { color: #a33e21; }
.req__actions { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.req__privacy { margin: 0; font: 400 0.72rem/1.4 var(--font-mono); color: var(--slate); }