:root {
  --ink: #061331;
  --muted: #53637d;
  --line: #dbe6f6;
  --blue: #1265ff;
  --blue-deep: #0638c8;
  --sky: #dceaff;
  --silver: #f7faff;
  --white: #ffffff;
  --shadow: 0 22px 70px rgba(42, 87, 145, 0.16);
  --page-max: 1296px;
  --page-gutter: 1.75rem;
  --page-padding: max(var(--page-gutter), calc((100vw - var(--page-max)) / 2));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family:
    -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
    "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    Arial, sans-serif;
  font-weight: 400;
  line-height: 1.47059;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background:
    radial-gradient(circle at 86% 9%, rgba(58, 128, 255, 0.18), transparent 32rem),
    linear-gradient(180deg, #ffffff 0%, #f8fbff 52%, #ffffff 100%);
}

@media (min-width: 1024px) {
  :root {
    --page-gutter: 2.5rem;
  }
}

@media (min-width: 1280px) {
  :root {
    --page-gutter: 4.5rem;
  }
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 2rem;
  min-height: 84px;
  padding: 0 var(--page-padding);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  min-width: max-content;
  font-weight: 700;
  letter-spacing: 0;
}

.brand-word {
  font-size: clamp(1.45rem, 2.4vw, 2.3rem);
}

.brand-mark,
.orbital-mark {
  position: relative;
  display: inline-grid;
  place-items: center;
  width: 48px;
  aspect-ratio: 1;
  border: 2px solid var(--blue);
  border-radius: 50%;
}

.brand-mark::before,
.brand-mark::after,
.orbital-mark::before,
.orbital-mark::after {
  position: absolute;
  content: "";
  border-radius: 50%;
}

.brand-mark::before,
.orbital-mark::before {
  inset: 8px;
  border: 2px solid #71a5ff;
  border-left-color: transparent;
}

.brand-mark::after,
.orbital-mark::after {
  top: 3px;
  right: 7px;
  width: 7px;
  height: 7px;
  background: var(--blue);
  box-shadow:
    -29px 14px 0 #7eb0ff,
    -5px 36px 0 #7eb0ff;
}

.brand-mark span,
.orbital-mark span {
  width: 21px;
  aspect-ratio: 1;
  border: 5px solid var(--blue);
  border-left-color: transparent;
  border-bottom-color: transparent;
  border-radius: 50%;
}

.brand .brand-mark {
  display: none;
}

.nav-links {
  display: flex;
  justify-content: flex-end;
  gap: clamp(1rem, 4vw, 4.5rem);
  font-size: 0.98rem;
  font-weight: 500;
}

.nav-links a {
  position: relative;
  padding: 2rem 0;
}

.nav-links a::after {
  position: absolute;
  right: 38%;
  bottom: 0;
  left: 38%;
  height: 2px;
  content: "";
  background: var(--blue);
  opacity: 0;
  transition: 0.2s ease;
}

.nav-links a:hover::after {
  right: 0;
  left: 0;
  opacity: 1;
}

.header-action,
.primary-button,
.ghost-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 1.35rem;
  border-radius: 8px;
  font-weight: 600;
}

.header-action,
.primary-button {
  color: white;
  background: linear-gradient(135deg, var(--blue), var(--blue-deep));
  box-shadow: 0 14px 30px rgba(18, 101, 255, 0.28);
}

.header-action::after,
.primary-button::after {
  margin-left: 0.7rem;
  content: "→";
}

.ghost-button {
  border: 1px solid #aecaef;
  color: #13305f;
  background: rgba(255, 255, 255, 0.72);
}

.home-shell .hero .primary-button {
  border: 1px solid #6f8ebd;
  color: #13305f;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: none;
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(320px, 0.94fr) minmax(320px, 1.06fr);
  gap: 2rem;
  align-items: center;
  min-height: min(720px, calc(100vh - 84px));
  padding: clamp(2.4rem, 5vw, 4.5rem) 5vw 3rem;
  overflow: hidden;
}

.hero::before {
  position: absolute;
  top: 0;
  left: 0;
  width: 38vw;
  height: 1px;
  content: "";
  background: linear-gradient(90deg, transparent, #76aaff, transparent);
}

.hero-copy {
  position: relative;
  z-index: 2;
  max-width: 650px;
  padding-left: 20px;
}

.hero-logo {
  margin-bottom: 1.4rem;
}

.orbital-mark {
  width: clamp(76px, 9vw, 122px);
  border-width: 3px;
}

.orbital-mark span {
  width: 48%;
  border-width: clamp(7px, 0.9vw, 11px);
}

.kicker {
  margin: 0 0 0.6rem;
  color: var(--blue);
  font-size: 0.95rem;
  font-weight: 600;
}

h1,
h2,
h3,
h4,
p {
  margin-top: 0;
}

h1,
h2,
h3,
h4 {
  font-weight: 700;
}

h1 {
  margin-bottom: 0.7rem;
  font-size: clamp(4.6rem, 11vw, 9.5rem);
  line-height: 0.9;
  color: transparent;
  letter-spacing: 0;
  background: linear-gradient(90deg, #04102c 0%, #071d51 48%, #1166ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
}

.hero h2 {
  margin-bottom: 1.45rem;
  font-size: clamp(1.3rem, 2.6vw, 2.75rem);
  line-height: 1.24;
  letter-spacing: 0;
}

.hero-text {
  max-width: 560px;
  margin-bottom: 2rem;
  color: var(--muted);
  font-size: clamp(1rem, 1.5vw, 1.22rem);
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

.hero-visual {
  position: relative;
  min-height: min(540px, 48vw);
  border-radius: 8px;
  overflow: hidden;
}

.hero-visual img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: right center;
  filter: saturate(1.04) contrast(1.02);
}

.hero-visual::before {
  position: absolute;
  inset: 0;
  z-index: 1;
  content: "";
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.55) 0%, transparent 30%);
  pointer-events: none;
}

.visual-glow {
  position: absolute;
  right: 4%;
  bottom: 16%;
  z-index: 2;
  width: 40%;
  aspect-ratio: 1;
  border: 1px solid rgba(18, 101, 255, 0.22);
  border-radius: 50%;
  box-shadow:
    inset 0 0 70px rgba(18, 101, 255, 0.16),
    0 0 90px rgba(18, 101, 255, 0.18);
}

.programs {
  display: grid;
  gap: 1rem;
  padding: 0 5vw 1.1rem;
}

.program-card {
  display: grid;
  grid-template-columns: minmax(260px, 0.72fr) minmax(320px, 1.28fr);
  min-height: 190px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 12px 45px rgba(42, 87, 145, 0.08);
}

.program-card.split {
  grid-template-columns: minmax(320px, 1.15fr) minmax(260px, 0.85fr);
}

.program-card.reverse {
  grid-template-columns: minmax(260px, 0.62fr) minmax(320px, 1.38fr);
}

.program-copy {
  position: relative;
  z-index: 2;
  align-self: center;
  padding: clamp(1.4rem, 3vw, 3rem);
}

.program-index {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 0.75rem;
  color: var(--blue);
  font-size: clamp(1.35rem, 2.2vw, 2rem);
  font-weight: 600;
}

.program-index::after {
  width: 44px;
  height: 2px;
  content: "";
  background: #82b1ff;
}

.program-card h3 {
  margin-bottom: 1.1rem;
  font-size: clamp(1.45rem, 2.4vw, 2.1rem);
  line-height: 1.12;
}

.program-copy p:last-child {
  max-width: 28ch;
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.8;
}

.program-image {
  position: relative;
  min-height: 190px;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.96), rgba(255, 255, 255, 0.28), rgba(255, 255, 255, 0.92)),
    linear-gradient(135deg, #f8fbff, #dceaff);
  background-position: center;
  background-size: cover;
}

.program-image::before,
.program-image::after {
  position: absolute;
  content: "";
}

.horizon::before,
.horizon::after,
.brain::before,
.brain::after,
.forum::before,
.forum::after,
.lighthouse::before,
.lighthouse::after {
  display: none;
}

.horizon {
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.96), rgba(255, 255, 255, 0.18), rgba(255, 255, 255, 0.84)),
    url("assets/home_plan.png") center / cover no-repeat;
}

.horizon::before {
  right: -10%;
  bottom: -46%;
  width: 78%;
  height: 98%;
  border: 26px solid rgba(255, 255, 255, 0.9);
  border-top-color: rgba(181, 207, 246, 0.55);
  border-radius: 50% 0 0 0;
  transform: rotate(-10deg);
}

.horizon::after {
  right: 7%;
  bottom: 24%;
  width: 34%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(18, 101, 255, 0.45), transparent);
  box-shadow:
    0 16px 0 rgba(18, 101, 255, 0.1),
    0 32px 0 rgba(18, 101, 255, 0.08),
    0 48px 0 rgba(18, 101, 255, 0.06);
}

.brain {
  background:
    linear-gradient(90deg, rgba(4, 19, 49, 0.08), rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.92)),
    url("assets/home_agi.png") center / cover no-repeat;
}

.brain::before {
  left: 18%;
  top: 22%;
  width: 32%;
  height: 56%;
  border: 2px solid rgba(255, 255, 255, 0.88);
  border-radius: 45% 55% 52% 48%;
  box-shadow:
    inset 0 0 40px rgba(255, 255, 255, 0.32),
    0 0 45px rgba(146, 194, 255, 0.42);
}

.brain::after {
  left: -4%;
  right: 8%;
  bottom: 25%;
  height: 44px;
  border-top: 2px solid rgba(255, 255, 255, 0.58);
  border-radius: 50%;
  transform: rotate(7deg);
}

.forum {
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.96), rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.86)),
    url("assets/home_forum.png") center / cover no-repeat;
}

.forum::before {
  right: 11%;
  top: 20%;
  width: 38%;
  height: 42%;
  border: 1px solid rgba(18, 101, 255, 0.22);
  border-radius: 8px;
  background:
    linear-gradient(rgba(18, 101, 255, 0.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(18, 101, 255, 0.12) 1px, transparent 1px);
  background-size: 28px 24px;
  box-shadow: 0 18px 48px rgba(42, 87, 145, 0.13);
}

.forum::after {
  right: 16%;
  bottom: 20%;
  width: 48%;
  height: 4px;
  border-radius: 999px;
  background: rgba(18, 101, 255, 0.28);
  box-shadow:
    -36px 22px 0 rgba(6, 19, 49, 0.18),
    38px 28px 0 rgba(6, 19, 49, 0.14),
    -84px 36px 0 rgba(18, 101, 255, 0.14);
}

.lighthouse {
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0.7), rgba(255, 255, 255, 0.96)),
    url("assets/home_support.png") center / cover no-repeat;
}

.lighthouse::before {
  left: 16%;
  bottom: 18%;
  width: 18%;
  height: 62%;
  clip-path: polygon(40% 0, 60% 0, 78% 100%, 22% 100%);
  background: linear-gradient(90deg, #f8fbff, #c5d5ec);
  box-shadow: 0 18px 40px rgba(42, 87, 145, 0.12);
}

.lighthouse::after {
  left: -8%;
  right: 0;
  bottom: 18%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(6, 19, 49, 0.22), transparent);
  box-shadow:
    0 18px 0 rgba(18, 101, 255, 0.08),
    0 36px 0 rgba(18, 101, 255, 0.05);
}

.site-footer {
  display: grid;
  grid-template-columns: minmax(230px, 1.4fr) repeat(3, minmax(110px, 0.55fr)) minmax(260px, 1fr);
  gap: 2rem;
  padding: 2rem var(--page-padding) 1.1rem;
  border-top: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.88);
}

.footer-brand p,
.subscribe p {
  color: var(--muted);
  line-height: 1.7;
}

.site-footer > *,
.footer-brand {
  min-width: 0;
}

.footer-brand p {
  overflow-wrap: anywhere;
}

.footer-brand .brand-word {
  font-size: 1.55rem;
}

.footer-brand .brand-mark {
  width: 38px;
}

.footer-col {
  display: grid;
  align-content: start;
  gap: 0.7rem;
}

.footer-col h4,
.subscribe label {
  margin: 0 0 0.35rem;
  font-weight: 600;
}

.footer-col a {
  color: var(--muted);
  font-size: 0.92rem;
}

.subscribe {
  margin: 0;
}

.email-row {
  display: grid;
  grid-template-columns: 1fr 52px;
  height: 48px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
}

.email-row input {
  width: 100%;
  min-width: 0;
  border: 0;
  padding: 0 1rem;
  color: var(--ink);
  outline: 0;
}

.email-row button {
  border: 0;
  color: white;
  background: var(--blue);
  font-size: 1.4rem;
  cursor: pointer;
}

.footer-bottom {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2.4rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--line);
  color: #8390a8;
  font-size: 0.9rem;
}

.footer-bottom span {
  margin-right: auto;
}

.footer-bottom .icp-link {
  color: var(--muted);
}

.footer-bottom .icp-link:hover {
  color: var(--blue);
}

.nav-links a.active::after {
  right: 0;
  left: 0;
  opacity: 1;
}

.dark {
  background: linear-gradient(135deg, #071226, #00091d);
  box-shadow: 0 14px 32px rgba(6, 19, 49, 0.18);
}

.header-action.dark {
  border: 2px solid var(--blue);
  color: #0b0f19;
  background: #ffffff;
  box-shadow: none;
}

.page-shell {
  width: min(var(--page-max), calc(100% - calc(var(--page-gutter) * 2)));
  margin: 0 auto;
}

.home-shell .hero,
.home-shell .programs {
  padding-right: 0;
  padding-left: 0;
}

.sub-hero {
  display: grid;
  grid-template-columns: minmax(280px, 0.86fr) minmax(340px, 1.14fr);
  align-items: center;
  gap: clamp(2rem, 5vw, 5rem);
  min-height: 380px;
  padding: clamp(3.4rem, 7vw, 5.8rem) 0 2.4rem;
}

.sub-hero h1 {
  color: var(--ink);
  background: none;
  font-size: clamp(3.3rem, 7vw, 5.4rem);
  line-height: 1.04;
}

.sub-hero p {
  max-width: 620px;
  color: var(--muted);
  font-size: clamp(1rem, 1.25vw, 1.16rem);
  line-height: 1.9;
}

.project-link-bar {
  width: 100%;
  min-height: 110px;
  margin: 2.4rem 0 2.6rem;
  padding: 2.2rem 1.8rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: #18315b;
  background: rgba(255, 255, 255, 0.82);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-weight: 700;
}

.project-link-bar a {
  color: var(--blue);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.city-visual,
.brain-stack-visual,
.platform-visual {
  position: relative;
  min-height: 320px;
  overflow: hidden;
}

.city-visual {
  background:
    radial-gradient(circle at 55% 42%, rgba(18, 101, 255, 0.13), transparent 32%),
    linear-gradient(180deg, transparent 74%, rgba(18, 101, 255, 0.1) 75%, transparent 78%);
}

.city-dome {
  position: absolute;
  left: 7%;
  right: 4%;
  bottom: 26%;
  height: 72%;
  border: 1px solid rgba(18, 101, 255, 0.16);
  border-bottom: 0;
  border-radius: 52% 52% 0 0;
  box-shadow: inset 0 0 90px rgba(18, 101, 255, 0.09);
}

.tower {
  position: absolute;
  bottom: 26%;
  width: 9%;
  border-radius: 4px 4px 0 0;
  background: linear-gradient(180deg, #adc5ed, #edf5ff);
  box-shadow:
    11vw 3vw 0 -0.4vw rgba(129, 163, 216, 0.72),
    -10vw 4vw 0 -0.7vw rgba(179, 202, 235, 0.68),
    19vw 5vw 0 -1vw rgba(166, 192, 230, 0.6),
    -18vw 6vw 0 -1.2vw rgba(181, 207, 246, 0.7);
}

.t1 { left: 46%; height: 55%; }
.t2 { left: 36%; height: 38%; }
.t3 { left: 57%; height: 42%; }
.t4 { left: 67%; height: 30%; }

.plan-list {
  display: grid;
  gap: 1.25rem;
  margin-bottom: 2rem;
  border: 0;
  border-radius: 0;
  overflow: visible;
  background: transparent;
}

.plan-section {
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.78);
}

.plan-section-header {
  display: grid;
  grid-template-columns: 1fr;
  align-items: center;
  gap: 1rem;
  min-height: 120px;
  padding: 0 2.6rem;
}

.plan-section-header h2 {
  margin-bottom: 0.45rem;
  font-size: 1.35rem;
}

.plan-section-header p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.7;
}

.plan-section-body {
  border-top: 1px solid var(--line);
}

.plan-item {
  border-bottom: 1px solid var(--line);
}

.plan-item:last-child {
  border-bottom: 0;
}

.plan-row {
  display: grid;
  grid-template-columns: 70px 1fr 48px;
  align-items: center;
  min-height: 102px;
  padding: 0 2.6rem;
  cursor: pointer;
  list-style: none;
}

.plan-row::-webkit-details-marker {
  display: none;
}

.plan-row::marker {
  content: "";
}

.plan-item .row-arrow {
  transition: transform 0.25s ease;
}

.plan-item.is-expanded .row-arrow {
  transform: rotate(90deg);
}

.plan-item-detail {
  max-height: 0;
  overflow: hidden;
  padding: 0 4.2rem;
  background: rgba(255, 255, 255, 0.74);
  opacity: 0;
  transform: translateY(-8px);
  transition:
    max-height 0.34s ease,
    padding 0.34s ease,
    opacity 0.26s ease,
    transform 0.34s ease;
}

.plan-item.is-expanded:not(.is-closing) .plan-item-detail {
  max-height: 1200px;
  padding-top: 1.1rem;
  padding-bottom: 1.35rem;
  opacity: 1;
  transform: translateY(0);
}

.plan-item.is-closing .row-arrow {
  transform: rotate(0deg);
}

.plan-item-detail p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1.8;
}

.plan-item-detail p + p {
  margin-top: 0.7rem;
}

.plan-item-detail ul {
  display: grid;
  gap: 0.5rem;
  margin: 0.85rem 0 0;
  padding-left: 1.2rem;
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1.8;
}

.plan-item-detail-media {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(320px, 1.18fr);
  gap: 2.4rem;
  align-items: center;
}

.plan-detail-visual {
  min-height: 260px;
  overflow: hidden;
  border-radius: 8px;
  background: #eef4ff;
}

.plan-detail-visual img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 260px;
  object-fit: cover;
}

.plan-row h2 {
  margin-bottom: 0;
  font-size: 1.24rem;
}

.plan-row p,
.plan-note {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.7;
}

.num {
  display: inline-grid;
  place-items: center;
  width: 46px;
  aspect-ratio: 1;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--blue);
  background: #f7fbff;
  font-size: 1.3rem;
  font-weight: 600;
}

.icon,
.about-icon,
.progress-icon {
  display: inline-grid;
  place-items: center;
  width: 58px;
  aspect-ratio: 1;
  border-radius: 50%;
  color: var(--blue);
  background: #eff5ff;
  font-size: 1.4rem;
  font-weight: 600;
}

.purple { color: #8e5bff; background: #f5f0ff; }
.orange { color: #ff8a24; background: #fff4eb; }
.green { color: #2ea985; background: #effaf6; }
.blue { color: var(--blue); background: #eff5ff; }

.row-arrow {
  display: inline-grid;
  place-items: center;
  width: 36px;
  aspect-ratio: 1;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: #8090ad;
  font-size: 1.8rem;
}

.plan-note {
  min-height: 62px;
  padding: 1.25rem 6rem;
  border-top: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.74);
}

.brain-stack-visual {
  background:
    radial-gradient(circle at 70% 44%, rgba(18, 101, 255, 0.14), transparent 34%),
    radial-gradient(circle at 35% 40%, rgba(18, 101, 255, 0.08), transparent 25%);
}

.head-line {
  position: absolute;
  left: 11%;
  top: 15%;
  width: 34%;
  height: 56%;
  border: 2px solid rgba(18, 101, 255, 0.24);
  border-radius: 45% 55% 48% 52%;
  box-shadow: inset 0 0 42px rgba(18, 101, 255, 0.08);
}

.cube-stack,
.center-cube,
.platform-visual span {
  position: absolute;
  background:
    linear-gradient(30deg, rgba(18, 101, 255, 0.1) 12%, transparent 12.5%, transparent 87%, rgba(18, 101, 255, 0.1) 87.5%),
    linear-gradient(150deg, rgba(18, 101, 255, 0.12) 12%, transparent 12.5%, transparent 87%, rgba(18, 101, 255, 0.12) 87.5%),
    linear-gradient(30deg, rgba(18, 101, 255, 0.1) 12%, transparent 12.5%, transparent 87%, rgba(18, 101, 255, 0.1) 87.5%),
    linear-gradient(150deg, rgba(18, 101, 255, 0.12) 12%, transparent 12.5%, transparent 87%, rgba(18, 101, 255, 0.12) 87.5%),
    linear-gradient(60deg, rgba(18, 101, 255, 0.08) 25%, transparent 25.5%, transparent 75%, rgba(18, 101, 255, 0.08) 75%, rgba(18, 101, 255, 0.08));
  background-color: #f4f8ff;
  background-position:
    0 0,
    0 0,
    20px 35px,
    20px 35px,
    0 0;
  background-size: 40px 70px;
}

.cube-stack {
  right: 10%;
  bottom: 16%;
  width: 44%;
  aspect-ratio: 1.25;
  border: 1px solid rgba(18, 101, 255, 0.14);
  border-radius: 8px;
  transform: perspective(360px) rotateX(58deg) rotateZ(45deg);
  box-shadow: 0 28px 60px rgba(42, 87, 145, 0.12);
}

.net-dot {
  position: absolute;
  width: 8px;
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--blue);
  box-shadow: 0 0 0 6px rgba(18, 101, 255, 0.1);
}

.d1 { left: 36%; top: 18%; }
.d2 { right: 22%; top: 26%; }
.d3 { right: 36%; bottom: 20%; }

.research-section,
.about-section,
.team-section,
.join-band {
  margin: 1.8rem 0;
}

.research-section > h2,
.about-section > h2 {
  font-size: clamp(1.55rem, 2.5vw, 2rem);
}

.route-panel,
.progress-panel,
.join-band {
  display: grid;
  grid-template-columns: minmax(280px, 0.78fr) minmax(360px, 1.22fr);
  gap: 2rem;
  padding: 1.5rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.78);
}

.route-steps,
.progress-list {
  display: grid;
}

.route-steps article,
.progress-list article {
  display: grid;
  grid-template-columns: 70px 1fr;
  gap: 1rem;
  padding: 1.2rem 0;
  border-bottom: 1px solid var(--line);
}

.route-steps article:last-child,
.progress-list article:last-child {
  border-bottom: 0;
}

.route-steps span {
  color: var(--blue);
  font-size: 1.7rem;
  font-weight: 600;
}

.route-steps h3,
.progress-list h3,
.mission-grid h3,
.principle-grid h3,
.team-copy h2,
.join-band h2 {
  margin-bottom: 0.55rem;
}

.route-steps p,
.progress-list p,
.mission-grid p,
.principle-grid p,
.team-copy p,
.join-band p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.75;
}

.route-visual,
.cycle-visual {
  position: relative;
  min-height: 320px;
  border-left: 1px solid var(--line);
}

.route-visual span {
  position: absolute;
  z-index: 2;
  padding: 0.45rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: #637291;
  background: white;
}

.route-visual span:nth-child(1) { left: 28%; top: 10%; }
.route-visual span:nth-child(2) { left: 43%; top: 20%; }
.route-visual span:nth-child(3) { right: 20%; top: 10%; }

.route-pyramid {
  position: absolute;
  left: 30%;
  top: 32%;
  width: 40%;
  aspect-ratio: 1;
  clip-path: polygon(50% 0, 100% 82%, 0 82%);
  background:
    linear-gradient(rgba(18, 101, 255, 0.18) 1px, transparent 1px),
    linear-gradient(90deg, rgba(18, 101, 255, 0.18) 1px, transparent 1px),
    linear-gradient(180deg, #f4f8ff, #dceaff);
  background-size: 26px 26px;
  box-shadow: 0 24px 70px rgba(42, 87, 145, 0.12);
}

.formula-strip,
.research-callout {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 1.1rem;
  margin-top: 1rem;
  padding: 1.1rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: #18315b;
  background: rgba(255, 255, 255, 0.84);
  font-weight: 600;
}

.route-panel .formula-strip {
  position: relative;
  grid-column: 1 / -1;
  margin-top: 0;
  padding-top: 3rem;
  border: 0;
  font-size: clamp(1.2rem, 2.4vw, 1.8rem);
}

.route-panel .formula-strip::before {
  display: none;
}

.research-callout {
  border: 0;
  background: transparent;
  margin: 3rem 0 0;
  padding: 0;
}

.progress-panel {
  display: block;
  padding: 3rem;
}

.progress-panel .progress-list {
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: stretch;
  gap: 1.8rem;
}

.progress-panel .progress-list article {
  display: block;
  min-height: 260px;
  padding: 2.25rem 2.25rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.78);
}

.progress-panel .progress-list article:last-child {
  border-bottom: 1px solid var(--line);
}

.progress-arrow {
  display: grid;
  place-items: center;
  color: var(--blue);
  font-size: 1.8rem;
  font-weight: 600;
}

.progress-percent {
  display: block;
  margin-top: 1.8rem;
  color: var(--ink);
  font-size: clamp(2rem, 4vw, 3.25rem);
  font-weight: 700;
  line-height: 1;
  text-align: center;
}

.cycle-visual {
  min-height: 300px;
  border-left: 1px solid var(--line);
}

.center-cube {
  left: 42%;
  top: 32%;
  width: 120px;
  aspect-ratio: 1;
  border: 1px solid rgba(18, 101, 255, 0.18);
  transform: rotate(45deg);
}

.cycle-visual::before,
.cycle-visual::after {
  position: absolute;
  inset: 16% 18%;
  content: "";
  border: 2px solid rgba(18, 101, 255, 0.42);
  border-left-color: transparent;
  border-radius: 50%;
}

.cycle-visual::after {
  inset: 22% 24%;
  border-right-color: transparent;
  transform: rotate(180deg);
}

.node {
  position: absolute;
  z-index: 2;
  padding: 0.9rem 1rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow);
  font-weight: 600;
}

.node.left { left: 8%; top: 52%; color: #2ea985; }
.node.top { left: 42%; top: 10%; color: var(--blue); }
.node.right { right: 6%; top: 52%; color: #ff8a24; }

.research-callout {
  justify-content: center;
  color: #071d51;
  font-size: clamp(1.2rem, 2.4vw, 1.8rem);
}

.platform-visual {
  background: radial-gradient(circle at 52% 45%, rgba(6, 19, 49, 0.12), transparent 34%);
}

.platform-visual span {
  left: 28%;
  top: 18%;
  width: 46%;
  aspect-ratio: 1;
  border: 1px solid rgba(6, 19, 49, 0.12);
  border-radius: 18px;
  transform: perspective(420px) rotateX(58deg) rotateZ(45deg);
  box-shadow: 0 40px 70px rgba(6, 19, 49, 0.12);
}

.mission-grid,
.principle-grid {
  display: grid;
  gap: 1.4rem;
  padding: 1.4rem 0 2rem;
  border-bottom: 1px solid var(--line);
}

.mission-grid {
  grid-template-columns: repeat(3, 1fr);
}

.principle-grid {
  grid-template-columns: 1fr;
  gap: 0;
}

.mission-grid article {
  padding-right: 1.5rem;
  border-right: 1px solid var(--line);
}

.mission-grid article:last-child {
  border-right: 0;
}

.principle-grid article {
  display: grid;
  grid-template-columns: 58px 1fr;
  gap: 0 1rem;
  align-items: start;
  padding: 1.2rem 0;
  border-bottom: 1px solid var(--line);
}

.principle-grid article:last-child {
  border-bottom: 0;
}

.principle-grid .about-icon {
  grid-row: 1 / span 2;
}

.team-section {
  display: block;
}

.team-copy {
  max-width: none;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.78);
}

.stats-grid article {
  min-height: 138px;
  padding: 1.6rem;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.stats-grid article:nth-child(2n) {
  border-right: 0;
}

.stats-grid article:nth-last-child(-n + 2) {
  border-bottom: 0;
}

.stats-grid b {
  display: block;
  margin-bottom: 0.35rem;
  font-size: clamp(1.7rem, 3vw, 2.2rem);
}

.stats-grid span {
  display: block;
  margin-bottom: 0.45rem;
  font-weight: 700;
}

.stats-grid p {
  margin-bottom: 0;
  color: var(--muted);
}

.join-band {
  grid-template-columns: 1fr auto;
  align-items: center;
  margin: 2rem 0 2.4rem;
  padding: 2rem 3rem;
}

.compact-footer {
  grid-template-columns: minmax(230px, 1.4fr) repeat(3, minmax(130px, 0.7fr));
}

.city-visual,
.brain-stack-visual,
.platform-visual,
.route-visual,
.cycle-visual {
  background-position: center;
  background-repeat: no-repeat;
  background-size: contain;
}

.city-visual {
  background-image: url("assets/plan_hero.png");
}

.brain-stack-visual {
  background-image: url("assets/agi_hero.png");
}

.platform-visual {
  background-image: url("assets/about_hero.png");
}

.route-visual {
  background-image: url("assets/agi_route.png");
}

.cycle-visual {
  background-image: url("assets/agi_cycle.png");
}

.city-visual > *,
.brain-stack-visual > *,
.platform-visual > *,
.route-visual > *,
.cycle-visual > *,
.cycle-visual::before,
.cycle-visual::after {
  display: none;
}

@media (min-width: 981px) {
  .plan-hero h1,
  .research-hero h1,
  .about-hero h1 {
    font-size: clamp(3.2rem, 5.2vw, 4.6rem);
    white-space: nowrap;
  }
}

@media (max-width: 980px) {
  /* 顶栏始终单行：品牌 | 导航（可横向滚动） | 参与讨论。
     旧实现让导航换到第二行，并把该列撑成 min-content 宽，参与讨论因此被推到视口外/
     压在导航条目上。这里三件东西固定同一行，宽度不足只在导航内部滚动。
     字号与间距等视觉微调在 fusion-theme.css 的窄屏块里（该文件后加载）。 */
  .site-header {
    grid-template-columns: auto minmax(0, 1fr) auto;
  }

  .nav-links {
    grid-column: auto;
    order: 0;
    min-width: 0;
    justify-content: flex-end;
    overflow-x: auto;
    border-top: 0;
    scrollbar-width: none;
    -ms-overflow-style: none;
  }

  .nav-links::-webkit-scrollbar {
    display: none;
  }

  .nav-links a {
    min-width: max-content;
    white-space: nowrap;
  }

  .header-action {
    flex-shrink: 0;
    white-space: nowrap;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .hero-visual {
    min-height: 460px;
  }

  .program-card,
  .program-card.split,
  .program-card.reverse {
    grid-template-columns: 1fr;
  }

  .program-card.split .program-image {
    order: 2;
  }

  .site-footer {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .sub-hero,
  .route-panel,
  .progress-panel,
  .team-section,
  .join-band {
    grid-template-columns: 1fr;
  }

  .route-visual,
  .cycle-visual {
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .mission-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .mission-grid article:nth-child(2n) {
    border-right: 0;
  }
}

@media (max-width: 640px) {
  .site-header {
    min-height: 74px;
    padding: 0 1rem;
  }

  .brand-mark {
    width: 40px;
  }

  .brand-word {
    font-size: 1.6rem;
  }

  .header-action {
    min-height: 42px;
    padding: 0 0.9rem;
    font-size: 0.9rem;
  }

  .hero,
  .programs {
    padding-right: 1rem;
    padding-left: 1rem;
  }

  h1 {
    font-size: clamp(4rem, 20vw, 5.7rem);
  }

  .hero-visual {
    min-height: 340px;
  }

  .hero-visual img {
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: right center;
  }

  .program-image {
    background-size: cover;
  }

  .site-footer {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    display: grid;
    gap: 0.8rem;
  }

  .sub-hero {
    min-height: auto;
    padding-top: 2.6rem;
  }

  .city-visual,
  .brain-stack-visual,
  .platform-visual {
    min-height: 240px;
  }

  .plan-row {
    grid-template-columns: 52px 1fr;
    gap: 0.7rem;
    padding: 1rem;
  }

  .plan-section-header {
    grid-template-columns: 1fr;
    gap: 0.5rem;
    min-height: auto;
    padding: 1rem;
  }

  .plan-section-header h2 {
    font-size: 1.12rem;
  }

  .plan-row h2 {
    font-size: 1rem;
  }

  .row-arrow {
    display: none;
  }

  .num {
    width: 42px;
    font-size: 1rem;
  }

  .icon,
  .about-icon,
  .progress-icon {
    width: 46px;
    font-size: 1rem;
  }

  .plan-note {
    padding: 1rem;
  }

  .plan-item-detail {
    padding-right: 1rem;
    padding-left: 1rem;
  }

  .plan-item-detail-media {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .plan-detail-visual {
    min-height: 210px;
  }

  .plan-detail-visual img {
    min-height: 210px;
  }

  .route-steps article,
  .progress-list article {
    grid-template-columns: 52px 1fr;
  }

  .route-panel,
  .progress-panel {
    padding: 1rem;
  }

  .progress-panel .progress-list {
    grid-template-columns: 1fr;
    gap: 0.8rem;
  }

  .progress-panel .progress-list article {
    min-height: auto;
    padding: 1.1rem;
  }

  .progress-arrow {
    transform: rotate(90deg);
  }

  .formula-strip {
    justify-content: flex-start;
  }

  .mission-grid,
  .principle-grid,
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .mission-grid article,
  .principle-grid article,
  .stats-grid article {
    border-right: 0;
  }

  .stats-grid article:nth-last-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }

  .stats-grid article:last-child {
    border-bottom: 0;
  }

  .join-band {
    padding: 1.2rem;
  }
}

/* ===== 行业进展页（industry_progress.html） ===== */
.industry-page {
  --industry-navy: #071a43;
  --industry-cyan: #44b7ff;
  --industry-violet: #7357ff;
}

.industry-page .eyebrow {
  margin: 0 0 0.7rem;
  color: var(--blue);
  font-size: 0.75rem;
  font-weight: 750;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.industry-hero {
  position: relative;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.95fr);
  min-height: 610px;
  overflow: hidden;
  border: 1px solid #dde8f5;
  color: #10284d;
  background: #ffffff;
  box-shadow: 0 24px 65px rgba(38, 77, 130, 0.09);
}

.industry-hero::before {
  position: absolute;
  inset: 0;
  content: "";
  pointer-events: none;
  background-image:
    linear-gradient(rgba(46, 125, 219, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(46, 125, 219, 0.055) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(90deg, transparent, black 55%);
}

.industry-hero-copy,
.industry-radar {
  position: relative;
  z-index: 1;
}

.industry-hero .eyebrow {
  color: #1265c9;
}

.industry-hero h1 {
  margin: 0;
  font-size: clamp(3.6rem, 7vw, 6.9rem);
  line-height: 0.98;
  letter-spacing: -0.055em;
  color: #071a43;
}

.industry-lead {
  max-width: 690px;
  margin: 1.5rem 0 0;
  color: #dcecff !important;
  font-size: clamp(1.05rem, 1.7vw, 1.3rem) !important;
  line-height: 1.8 !important;
}

.industry-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 2rem;
}

.industry-hero .primary-button {
  background: linear-gradient(135deg, #238cff, #555dff);
}

.industry-hero .ghost-button {
  border-color: rgba(190, 222, 255, 0.4);
  color: white;
  background: rgba(255, 255, 255, 0.08);
}

.evidence-date {
  margin: 1rem 0 0 !important;
  color: #607a9c !important;
  font-size: 0.86rem !important;
}

.industry-radar {
  min-height: 420px;
}

.radar-ring,
.radar-core,
.radar-node {
  position: absolute;
}

.radar-ring {
  left: 50%;
  top: 50%;
  border: 1px solid rgba(130, 203, 255, 0.28);
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.radar-ring::before,
.radar-ring::after {
  position: absolute;
  content: "";
  background: rgba(130, 203, 255, 0.16);
}

.radar-ring::before {
  left: 50%;
  top: 0;
  width: 1px;
  height: 100%;
}

.radar-ring::after {
  left: 0;
  top: 50%;
  width: 100%;
  height: 1px;
}

.ring-a {
  width: 360px;
  height: 360px;
}

.ring-b {
  width: 244px;
  height: 244px;
  border-style: dashed;
}

.radar-core {
  left: 50%;
  top: 50%;
  display: grid;
  place-content: center;
  width: 144px;
  height: 144px;
  border: 1px solid #b8d8fb;
  border-radius: 50%;
  text-align: center;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, #ffffff, #e4f2ff);
  box-shadow: 0 18px 50px rgba(43, 126, 218, 0.2);
}

.radar-core strong,
.radar-core span {
  display: block;
}

.radar-core strong {
  color: #0b57b1;
  font-size: 1rem;
}

.radar-core span {
  margin-top: 0.25rem;
  color: #526f94;
  font-size: 0.75rem;
}

.radar-node {
  padding: 0.55rem 0.8rem;
  border: 1px solid #c9def5;
  border-radius: 999px;
  font-size: 0.77rem;
  font-weight: 650;
  color: #17375f;
  background: #ffffff;
  box-shadow: 0 10px 28px rgba(29, 77, 133, 0.14);
}

.radar-node::before {
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 0.42rem;
  border-radius: 50%;
  content: "";
  background: #69c6ff;
  box-shadow: 0 0 0 5px rgba(105, 198, 255, 0.11);
}

.node-openai { left: 8%; top: 22%; }
.node-deepmind { right: 2%; top: 34%; }
.node-anthropic { left: 20%; bottom: 13%; }

.industry-summary,
.industry-section,
.industry-conclusion {
  margin: clamp(3rem, 7vw, 6rem) 0;
}

.section-heading {
  max-width: 860px;
  margin-bottom: 2rem;
}

.section-heading h2,
.industry-conclusion h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.6rem);
  line-height: 1.1;
  letter-spacing: -0.04em;
}

.section-heading > p:not(.eyebrow),
.split-heading > p {
  color: var(--muted);
  line-height: 1.8;
}

.split-heading {
  display: grid;
  grid-template-columns: minmax(300px, 0.9fr) minmax(340px, 1.1fr);
  gap: 2rem;
  align-items: end;
  max-width: none;
}

.verdict-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.verdict-card {
  position: relative;
  min-height: 235px;
  padding: 1.6rem;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 18px 50px rgba(38, 77, 130, 0.08);
}

.verdict-card::after {
  position: absolute;
  right: -36px;
  bottom: -50px;
  width: 150px;
  height: 150px;
  border-radius: 50%;
  content: "";
  opacity: 0.13;
}

.verdict-card.supported::after { background: #23b68b; }
.verdict-card.unresolved::after { background: #ffad32; }
.verdict-card.rejected::after { background: #596cff; }

.verdict-card > span,
.claim-status {
  display: inline-flex;
  padding: 0.35rem 0.62rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
}

.supported > span { color: #087755; background: #dff8ef; }
.unresolved > span { color: #9a5800; background: #fff0d7; }
.rejected > span { color: #3043be; background: #e6e9ff; }

.verdict-card h3 {
  margin: 1.25rem 0 0.7rem;
  font-size: 1.35rem;
}

.verdict-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
}

.industry-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 1rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--industry-navy);
}

.industry-metrics article {
  padding: 1.4rem;
  border-right: 1px solid rgba(186, 218, 255, 0.15);
  color: white;
  text-align: center;
}

.industry-metrics article:last-child {
  border-right: 0;
}

.industry-metrics strong,
.industry-metrics span {
  display: block;
}

.industry-metrics strong {
  font-size: clamp(1.6rem, 3vw, 2.5rem);
  line-height: 1;
}

.industry-metrics span {
  margin-top: 0.55rem;
  color: #a8c1e4;
  font-size: 0.8rem;
}

.lab-grid {
  display: grid;
  gap: 1rem;
}

.lab-card {
  display: grid;
  grid-template-columns: minmax(260px, 0.7fr) minmax(460px, 1.3fr);
  gap: 1.6rem 2.5rem;
  padding: clamp(1.4rem, 3.5vw, 2.6rem);
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 18px 55px rgba(40, 80, 132, 0.08);
}

.lab-card header {
  display: flex;
  gap: 1.1rem;
  align-items: flex-start;
}

.lab-index {
  display: grid;
  flex: 0 0 46px;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 10px;
  color: white;
  font-size: 0.82rem;
  font-weight: 750;
  background: var(--blue);
}

.deepmind-card .lab-index { background: #7b57df; }
.anthropic-card .lab-index { background: #d26c42; }

.lab-card header p {
  margin: 0 0 0.35rem;
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.deepmind-card header p { color: #6f4acb; }
.anthropic-card header p { color: #b65834; }

.lab-card header h3 {
  margin: 0;
  font-size: clamp(1.25rem, 2.3vw, 1.8rem);
  line-height: 1.25;
}

.lab-timeline {
  grid-row: span 3;
  margin: 0;
  padding: 0;
  list-style: none;
}

.lab-timeline li {
  position: relative;
  display: grid;
  grid-template-columns: 74px 1fr;
  gap: 1rem;
  padding: 0 0 1.45rem 1rem;
  border-left: 1px solid #cfe0f7;
}

.lab-timeline li:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.lab-timeline li::before {
  position: absolute;
  left: -5px;
  top: 0.42rem;
  width: 9px;
  height: 9px;
  border: 3px solid white;
  border-radius: 50%;
  content: "";
  background: var(--blue);
  box-shadow: 0 0 0 1px var(--blue);
}

.lab-timeline time {
  color: #305784;
  font-size: 0.8rem;
  font-weight: 750;
}

.lab-timeline strong,
.lab-timeline span {
  display: block;
}

.lab-timeline strong {
  font-size: 1rem;
}

.lab-timeline span {
  margin-top: 0.3rem;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.65;
}

.lab-takeaway {
  align-self: end;
  margin: 0;
  padding: 1rem;
  border-left: 3px solid var(--blue);
  color: #354b6d;
  background: #f4f8ff;
  line-height: 1.7;
}

.source-link {
  align-self: end;
  width: max-content;
  color: var(--blue);
  font-size: 0.85rem;
  font-weight: 700;
}

.source-link span {
  margin-left: 0.3rem;
}

.puzzle-section {
  padding: clamp(1.5rem, 4vw, 3.5rem);
  border-radius: 18px;
  background: #eef5ff;
}

.puzzle-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.puzzle-grid article {
  min-height: 225px;
  padding: 1.45rem;
  border: 1px solid #d4e3f8;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.84);
}

.puzzle-grid article > span {
  color: var(--blue);
  font-size: 0.75rem;
  font-weight: 750;
  letter-spacing: 0.08em;
}

.puzzle-grid h3 {
  margin: 0.8rem 0 0.55rem;
}

.puzzle-grid p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.puzzle-grid strong {
  display: block;
  margin-top: 1rem;
  color: #284e7e;
  font-size: 0.76rem;
}

.mechanism-synthesis {
  margin: 1rem 0 0;
  padding: 1.5rem;
  border: 0;
  border-radius: 12px;
  color: white;
  background: linear-gradient(120deg, #071a43, #123f89);
  text-align: center;
}

.mechanism-synthesis p {
  margin: 0 0 0.5rem;
  color: #92b8e6;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.mechanism-synthesis strong {
  font-size: clamp(1rem, 2vw, 1.35rem);
  line-height: 1.7;
}

.claim-list {
  display: grid;
  border-top: 1px solid var(--line);
}

.claim-list article {
  display: grid;
  grid-template-columns: 130px minmax(250px, 0.8fr) minmax(360px, 1.2fr);
  gap: 1.4rem;
  align-items: center;
  padding: 1.35rem 0;
  border-bottom: 1px solid var(--line);
}

.claim-list h3,
.claim-list p {
  margin: 0;
}

.claim-list p {
  color: var(--muted);
  line-height: 1.7;
}

.claim-status {
  justify-content: center;
  width: max-content;
}

.no-evidence { color: #8a5000; background: #fff0d4; }
.overreach { color: #3249aa; background: #e8edff; }
.contradicted { color: #a23131; background: #ffe5e5; }

.project-impact {
  padding: clamp(1.5rem, 4vw, 3.5rem);
  border-radius: 18px;
  color: white;
  background:
    radial-gradient(circle at 10% 12%, rgba(51, 148, 255, 0.28), transparent 22rem),
    linear-gradient(135deg, #06132f, #0a275c);
}

.project-impact .eyebrow { color: #70c5ff; }
.project-impact .section-heading > p { color: #afc7e6; }

.impact-layout {
  display: grid;
  grid-template-columns: minmax(320px, 0.9fr) minmax(420px, 1.1fr);
  gap: 1rem;
}

.impact-principle,
.next-work-list {
  border: 1px solid rgba(154, 204, 255, 0.18);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.055);
}

.impact-principle {
  padding: 1.6rem;
}

.impact-principle > span {
  color: #6bc5ff;
  font-size: 0.75rem;
  font-weight: 750;
  letter-spacing: 0.08em;
}

.impact-principle h3 {
  margin: 0.8rem 0 1.3rem;
  font-size: clamp(1.4rem, 2.5vw, 2.1rem);
  line-height: 1.25;
}

.impact-flow {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: center;
}

.impact-flow span {
  padding: 0.65rem 0.8rem;
  border: 1px solid rgba(154, 204, 255, 0.24);
  border-radius: 8px;
  color: #d8eaff;
  font-size: 0.8rem;
  background: rgba(69, 147, 239, 0.1);
}

.impact-flow b { color: #67c4ff; }

.impact-principle > p {
  margin: 1.4rem 0 0;
  color: #afc7e6;
  line-height: 1.8;
}

.next-work-list {
  margin: 0;
  padding: 0 1.35rem;
  list-style: none;
}

.next-work-list li {
  display: grid;
  grid-template-columns: 58px 1fr;
  gap: 1rem;
  padding: 1.15rem 0;
  border-bottom: 1px solid rgba(154, 204, 255, 0.14);
}

.next-work-list li:last-child { border-bottom: 0; }

.next-work-list li > span {
  color: #67c4ff;
  font-size: 0.78rem;
  font-weight: 750;
}

.next-work-list h3,
.next-work-list p {
  margin: 0;
}

.next-work-list h3 { font-size: 1rem; }
.next-work-list p { margin-top: 0.35rem; color: #afc7e6; font-size: 0.86rem; line-height: 1.6; }

.stop-rule {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 1rem;
  margin-top: 1rem;
  padding: 1rem 1.2rem;
  border: 1px solid rgba(255, 184, 105, 0.3);
  border-radius: 10px;
  background: rgba(255, 143, 47, 0.08);
}

.stop-rule strong { color: #ffbd76; }
.stop-rule p { margin: 0; color: #d5e3f5; line-height: 1.7; }

.industry-conclusion {
  padding: clamp(2rem, 5vw, 4rem);
  border: 1px solid var(--line);
  border-radius: 18px;
  text-align: center;
  background: white;
  box-shadow: 0 22px 70px rgba(42, 87, 145, 0.1);
}

.industry-conclusion p:not(.eyebrow) {
  max-width: 800px;
  margin: 1.2rem auto 1.8rem;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.8;
}

@media (max-width: 980px) {
  .industry-hero,
  .split-heading,
  .lab-card,
  .impact-layout {
    grid-template-columns: 1fr;
  }

  .industry-radar { min-height: 390px; }
  .verdict-grid,
  .puzzle-grid { grid-template-columns: repeat(2, 1fr); }
  .lab-timeline { grid-row: auto; }
  .industry-metrics { grid-template-columns: repeat(2, 1fr); }
  .industry-metrics article:nth-child(2) { border-right: 0; }
  .industry-metrics article:nth-child(-n + 2) { border-bottom: 1px solid rgba(186, 218, 255, 0.15); }
  .claim-list article { grid-template-columns: 120px 1fr; }
  .claim-list p { grid-column: 2; }
}

@media (max-width: 640px) {
  .industry-hero { padding: 2.6rem 1.1rem 1.5rem; }
  .industry-hero h1 { font-size: clamp(3.3rem, 18vw, 5rem); }
  .industry-actions { display: grid; }
  .industry-radar { min-height: 310px; }
  .ring-a { width: 280px; height: 280px; }
  .ring-b { width: 190px; height: 190px; }
  .radar-core { width: 116px; height: 116px; }
  .node-openai { left: 0; }
  .node-deepmind { right: 0; }
  .node-anthropic { left: 8%; bottom: 8%; }
  .verdict-grid,
  .puzzle-grid,
  .industry-metrics { grid-template-columns: 1fr; }
  .industry-metrics article,
  .industry-metrics article:nth-child(2) { border-right: 0; border-bottom: 1px solid rgba(186, 218, 255, 0.15); }
  .industry-metrics article:last-child { border-bottom: 0; }
  .lab-card { padding: 1.1rem; }
  .lab-timeline li { grid-template-columns: 58px 1fr; gap: 0.6rem; }
  .puzzle-section,
  .project-impact { padding: 1.2rem; }
  .claim-list article { grid-template-columns: 1fr; gap: 0.7rem; }
  .claim-list p { grid-column: auto; }
  .impact-flow { display: grid; }
  .impact-flow b { transform: rotate(90deg); text-align: center; }
  .stop-rule { grid-template-columns: 1fr; }
}

/* 行业进展精简版：只展示三家公司研究时间线 */
.industry-page .industry-hero {
  min-height: 570px;
  border-radius: 0 0 24px 24px;
  box-shadow: 0 30px 80px rgba(7, 26, 67, 0.18);
}

.company-jump-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 2rem;
}

.company-jump-nav a {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  min-height: 46px;
  padding: 0 1rem 0 0.65rem;
  border: 1px solid #cbdcf0;
  border-radius: 999px;
  color: #17375f;
  font-size: 0.82rem;
  font-weight: 650;
  background: #ffffff;
  transition: border-color 0.2s ease, background 0.2s ease, transform 0.2s ease;
}

.company-jump-nav a:hover {
  border-color: #7db8f3;
  background: #eef6ff;
  transform: translateY(-2px);
}

.company-jump-nav span {
  display: grid;
  place-items: center;
  width: 31px;
  height: 31px;
  border-radius: 50%;
  color: white;
  font-size: 0.68rem;
  background: linear-gradient(135deg, #2d98ff, #5f64ff);
}

.industry-page .radar-core strong {
  font-size: 3rem;
  line-height: 0.9;
}

.industry-page .radar-core span {
  margin-top: 0.6rem;
  font-size: 0.62rem;
  letter-spacing: 0.14em;
}

.company-progress {
  margin-top: clamp(3.5rem, 7vw, 6.5rem);
}

.company-heading {
  display: grid;
  grid-template-columns: minmax(310px, 0.95fr) minmax(340px, 1.05fr);
  gap: 2rem;
  align-items: end;
  max-width: none;
  padding-bottom: 1.8rem;
  border-bottom: 1px solid var(--line);
}

.company-heading .eyebrow,
.company-heading h2 {
  grid-column: 1;
}

.company-heading h2 {
  margin-top: -1.8rem;
}

.company-heading > p:last-child {
  grid-column: 2;
  grid-row: 1 / span 2;
  align-self: end;
  margin: 0;
}

.company-progress .lab-grid {
  gap: 1.6rem;
}

.company-progress .lab-card {
  position: relative;
  grid-template-columns: minmax(280px, 0.72fr) minmax(500px, 1.28fr);
  gap: clamp(2rem, 4vw, 4rem);
  padding: clamp(1.5rem, 3.5vw, 3rem);
  overflow: hidden;
  border-top-width: 4px;
  border-radius: 20px;
  scroll-margin-top: 110px;
  transition: transform 0.24s ease, box-shadow 0.24s ease;
}

.company-progress .lab-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 28px 72px rgba(40, 80, 132, 0.14);
}

.company-progress .lab-card::before {
  position: absolute;
  left: -95px;
  top: -110px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  content: "";
  pointer-events: none;
  opacity: 0.1;
}

.company-progress .openai-card {
  border-top-color: #1978ff;
  background: linear-gradient(120deg, rgba(233, 244, 255, 0.92), rgba(255, 255, 255, 0.98) 42%);
}

.company-progress .openai-card::before { background: #1978ff; }

.company-progress .deepmind-card {
  border-top-color: #7651d5;
  background: linear-gradient(120deg, rgba(242, 237, 255, 0.92), rgba(255, 255, 255, 0.98) 42%);
}

.company-progress .deepmind-card::before { background: #7651d5; }

.company-progress .anthropic-card {
  border-top-color: #cf6a42;
  background: linear-gradient(120deg, rgba(255, 241, 233, 0.92), rgba(255, 255, 255, 0.98) 42%);
}

.company-progress .anthropic-card::before { background: #cf6a42; }

.lab-profile {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-self: start;
  min-height: 100%;
}

.lab-summary {
  margin: 1.4rem 0 0;
  color: #4e607a;
  line-height: 1.8;
}

.research-focus {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.4rem;
}

.research-focus span {
  padding: 0.38rem 0.62rem;
  border: 1px solid rgba(53, 101, 164, 0.14);
  border-radius: 999px;
  color: #345477;
  font-size: 0.72rem;
  font-weight: 650;
  background: rgba(255, 255, 255, 0.7);
}

.company-progress .source-link {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  min-height: 48px;
  margin-top: auto;
  padding: 0.8rem 1rem;
  border: 1px solid rgba(31, 100, 191, 0.18);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.72);
}

.company-progress .source-link:hover {
  border-color: currentColor;
  background: white;
}

.company-progress .lab-timeline {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 0.75rem;
}

.company-progress .lab-timeline li {
  grid-template-columns: 78px 1fr;
  padding: 1rem 1rem 1rem 1.35rem;
  border: 1px solid #dce7f5;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.72);
}

.company-progress .lab-timeline li:last-child {
  border-left-color: #dce7f5;
}

.company-progress .lab-timeline li::before {
  left: -5px;
  top: 1.35rem;
}

.company-progress .deepmind-card .lab-timeline li::before {
  background: #7651d5;
  box-shadow: 0 0 0 1px #7651d5;
}

.company-progress .anthropic-card .lab-timeline li::before {
  background: #cf6a42;
  box-shadow: 0 0 0 1px #cf6a42;
}

.company-progress .lab-timeline time {
  padding-top: 0.12rem;
  font-size: 0.76rem;
}

.company-progress .lab-timeline strong {
  color: #10284d;
  font-size: 1.02rem;
}

.company-progress .lab-timeline span {
  font-size: 0.88rem;
}

@media (max-width: 980px) {
  .company-heading,
  .company-progress .lab-card {
    grid-template-columns: 1fr;
  }

  .company-heading .eyebrow,
  .company-heading h2,
  .company-heading > p:last-child {
    grid-column: 1;
    grid-row: auto;
  }

  .company-heading h2 { margin-top: -1.6rem; }
  .lab-profile { min-height: auto; }
  .company-progress .source-link { width: max-content; margin-top: 1.4rem; }
}

@media (max-width: 640px) {
  .industry-page .industry-hero { border-radius: 0 0 16px 16px; }
  .company-jump-nav { display: grid; }
  .company-jump-nav a { width: 100%; }
  .company-progress .lab-card { gap: 1.5rem; padding: 1.15rem; border-radius: 14px; }
  .company-progress .lab-card header { align-items: center; }
  .company-progress .lab-timeline li { grid-template-columns: 1fr; gap: 0.35rem; padding: 0.9rem 0.9rem 0.9rem 1.15rem; }
  .company-progress .lab-timeline li::before { top: 1.22rem; }
  .company-progress .source-link { width: 100%; }
}

/* AGI 研究二级导航 */
.research-subnav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  width: max-content;
  max-width: 100%;
  margin: 1.15rem auto 0;
  padding: 0.35rem;
  overflow-x: auto;
  border: 1px solid #d7e3f3;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 10px 30px rgba(38, 77, 130, 0.08);
}

.research-subnav a {
  min-width: max-content;
  padding: 0.55rem 0.85rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 650;
}

.research-subnav a {
  color: #304c72;
  transition: color 0.2s ease, background 0.2s ease;
}

.research-subnav a:hover {
  color: var(--blue);
  background: #eef5ff;
}

.research-subnav a.active {
  color: white;
  background: linear-gradient(135deg, var(--blue), var(--blue-deep));
  box-shadow: 0 7px 18px rgba(18, 101, 255, 0.22);
}

/* 公司进展模块：独立左栏、明确留白和高对比文字 */
.company-progress .lab-card {
  grid-template-columns: minmax(310px, 0.72fr) minmax(500px, 1.28fr);
  gap: 0;
  padding: 0;
  border-top-width: 1px;
  background: #ffffff;
}

.company-progress .lab-card::before {
  display: none;
}

.company-progress .lab-profile {
  min-width: 0;
  padding: clamp(1.8rem, 3vw, 2.7rem);
  color: white;
}

.company-progress .openai-card .lab-profile {
  background:
    radial-gradient(circle at 92% 8%, rgba(83, 185, 255, 0.35), transparent 13rem),
    linear-gradient(150deg, #08265f, #0c54be);
}

.company-progress .deepmind-card .lab-profile {
  background:
    radial-gradient(circle at 92% 8%, rgba(207, 162, 255, 0.28), transparent 13rem),
    linear-gradient(150deg, #251452, #6944b8);
}

.company-progress .anthropic-card .lab-profile {
  background:
    radial-gradient(circle at 92% 8%, rgba(255, 192, 135, 0.26), transparent 13rem),
    linear-gradient(150deg, #442014, #9b4f31);
}

.company-progress .lab-profile .lab-index {
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: white;
  background: rgba(255, 255, 255, 0.13);
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.14);
}

.company-progress .lab-profile header p,
.company-progress .deepmind-card .lab-profile header p,
.company-progress .anthropic-card .lab-profile header p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.76rem;
  letter-spacing: 0.14em;
}

.company-progress .lab-profile header h3 {
  color: white;
  font-size: clamp(1.35rem, 2.25vw, 2rem);
  line-height: 1.28;
}

.company-progress .lab-summary {
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.96rem;
  line-height: 1.85;
}

.company-progress .research-focus span {
  border-color: rgba(255, 255, 255, 0.18);
  color: rgba(255, 255, 255, 0.88);
  background: rgba(255, 255, 255, 0.09);
}

.company-progress .source-link {
  border-color: rgba(255, 255, 255, 0.24);
  color: white;
  background: rgba(255, 255, 255, 0.1);
}

.company-progress .source-link:hover {
  border-color: rgba(255, 255, 255, 0.62);
  color: white;
  background: rgba(255, 255, 255, 0.17);
}

.company-progress .lab-timeline {
  padding: clamp(1.5rem, 3vw, 2.7rem);
  background: #f8fbff;
}

.company-progress .lab-timeline li {
  border-color: #d8e4f2;
  background: white;
  box-shadow: 0 8px 24px rgba(42, 82, 132, 0.055);
}

.company-progress .lab-timeline time {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: max-content;
  min-width: 58px;
  height: 27px;
  padding: 0 0.5rem;
  border-radius: 999px;
  color: #0b54b8;
  background: #e8f2ff;
}

.company-progress .deepmind-card .lab-timeline time {
  color: #6140ac;
  background: #f0eaff;
}

.company-progress .anthropic-card .lab-timeline time {
  color: #984b2e;
  background: #ffede5;
}

.company-progress .lab-timeline strong {
  color: #0b1c38;
  font-weight: 720;
}

.company-progress .lab-timeline span {
  color: #52637b;
}

/* 拼图与行业分析 */
.industry-page .puzzle-section {
  border: 1px solid #d9e5f4;
  background: linear-gradient(145deg, #edf5ff, #f8fbff);
}

.industry-page .puzzle-grid article {
  position: relative;
  overflow: hidden;
  border-color: #d7e3f2;
  background: white;
  box-shadow: 0 12px 32px rgba(40, 80, 132, 0.07);
}

.industry-page .puzzle-grid article::before {
  position: absolute;
  left: 0;
  top: 0;
  width: 4px;
  height: 100%;
  content: "";
  background: linear-gradient(var(--blue), #78b8ff);
}

.industry-page .puzzle-grid h3 {
  color: #0b1f43;
  font-size: 1.18rem;
}

.industry-page .puzzle-grid p {
  color: #53647b;
}

.industry-page .puzzle-grid strong {
  color: #1d5caa;
  font-weight: 680;
}

.industry-analysis {
  padding: clamp(1.6rem, 4vw, 3.6rem);
  border: 1px solid #d8e4f2;
  border-radius: 20px;
  background: white;
  box-shadow: 0 22px 64px rgba(42, 82, 132, 0.09);
}

.analysis-stage-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.analysis-stage-grid article {
  min-height: 230px;
  padding: 1.5rem;
  border: 1px solid #d9e4f2;
  border-radius: 14px;
  background: linear-gradient(160deg, #ffffff, #f4f8ff);
}

.analysis-stage-grid article > span {
  color: var(--blue);
  font-size: 0.7rem;
  font-weight: 760;
  letter-spacing: 0.14em;
}

.analysis-stage-grid h3 {
  margin: 1.1rem 0 0.7rem;
  color: #0b1f43;
  font-size: 1.25rem;
}

.analysis-stage-grid p {
  margin: 0;
  color: #53647b;
  line-height: 1.75;
}

.claim-audit {
  margin-top: 1rem;
  overflow: hidden;
  border: 1px solid #d8e4f2;
  border-radius: 14px;
}

.claim-audit-head,
.claim-audit article {
  display: grid;
  grid-template-columns: 160px minmax(260px, 0.8fr) minmax(340px, 1.2fr);
  gap: 1.2rem;
  align-items: center;
  padding: 1.1rem 1.25rem;
}

.claim-audit-head {
  color: white;
  background: #0b2148;
}

.claim-audit-head span {
  color: #87bcff;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.claim-audit article {
  border-bottom: 1px solid #e0e8f3;
}

.claim-audit article:last-child {
  border-bottom: 0;
}

.claim-audit h3,
.claim-audit p {
  margin: 0;
}

.claim-audit h3 {
  color: #12284c;
  font-size: 1rem;
}

.claim-audit p {
  color: #58687e;
  font-size: 0.9rem;
  line-height: 1.65;
}

@media (max-width: 980px) {
  .company-progress .lab-card,
  .analysis-stage-grid {
    grid-template-columns: 1fr;
  }

  .company-progress .source-link {
    width: 100%;
  }

  .claim-audit-head,
  .claim-audit article {
    grid-template-columns: 140px 1fr;
  }

  .claim-audit-head strong,
  .claim-audit p {
    grid-column: 2;
  }
}

@media (max-width: 640px) {
  .research-subnav {
    width: 100%;
    border-radius: 12px;
  }

  .company-progress .lab-profile,
  .company-progress .lab-timeline {
    padding: 1.25rem;
  }

  .industry-analysis {
    padding: 1.15rem;
  }

  .claim-audit-head,
  .claim-audit article {
    grid-template-columns: 1fr;
    gap: 0.65rem;
  }

  .claim-audit-head strong,
  .claim-audit p {
    grid-column: auto;
  }
}

/* 行业进展首屏说明模块 */
.industry-page .industry-hero {
  margin-top: 1.25rem;
  padding: clamp(3rem, 6vw, 5.4rem) clamp(1.6rem, 5vw, 4.6rem);
}

.industry-page .industry-hero-copy {
  min-width: 0;
}

.industry-page .industry-lead {
  position: relative;
  max-width: 650px;
  margin-top: 1.7rem;
  padding: 1.15rem 1.3rem 1.15rem 1.45rem;
  border: 0;
  border-left: 4px solid #5cc4ff;
  border-radius: 0;
  color: #17375f !important;
  font-size: clamp(1rem, 1.45vw, 1.18rem) !important;
  font-weight: 520;
  line-height: 1.75 !important;
  background: transparent;
  box-shadow: none;
}

.industry-page .industry-lead-label {
  display: block;
  color: #1265c9;
  font-size: 0.7rem;
  font-weight: 750;
  letter-spacing: 0.16em;
}

.industry-page .industry-lead p {
  max-width: none;
  margin: 0.45rem 0 0;
  color: inherit !important;
  font-size: inherit !important;
  line-height: inherit !important;
}

@media (max-width: 980px) {
  .industry-page .industry-hero {
    padding-right: clamp(1.4rem, 5vw, 3rem);
    padding-left: clamp(1.4rem, 5vw, 3rem);
  }
}

@media (max-width: 640px) {
  .industry-page .industry-hero {
    margin-top: 0.8rem;
    padding: 2.6rem 1.2rem 1.5rem;
  }

  .industry-page .industry-lead {
    padding: 1rem 1rem 1rem 1.15rem;
  }
}

/* ===== 参与讨论页（join.html） ===== */
.join-page {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.join-hero {
  text-align: center;
  padding: 2.5rem 1rem 1rem;
}

.join-hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  margin: 0 0 0.6rem;
}

.join-hero p {
  max-width: 640px;
  margin: 0 auto;
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.7;
}

.code-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.6rem;
  max-width: 760px;
  margin: 0 auto;
  width: 100%;
}

.code-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.8rem;
  padding: 1.8rem 1.4rem 1.6rem;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow);
  text-align: center;
}

.code-image-wrap {
  position: relative;
  width: 230px;
  height: 230px;
  border-radius: 12px;
  overflow: hidden;
  background: var(--silver);
  border: 1px solid var(--line);
}

.code-image-wrap img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: none;
}

.code-fallback {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  color: var(--muted);
  font-size: 1rem;
  font-weight: 600;
  background: var(--silver);
}

.code-fallback small {
  font-weight: 400;
  font-size: 0.8rem;
  opacity: 0.8;
}

.code-card h3 {
  margin: 0;
  font-size: 1.2rem;
}

.code-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.6;
}

.refresh-btn {
  margin-top: 0.3rem;
  padding: 0.5rem 1.2rem;
  font-size: 0.88rem;
  cursor: pointer;
}

@media (max-width: 640px) {
  .code-grid {
    grid-template-columns: 1fr;
  }
}