:root {
  --bg: #071027;
  --ink: #f8fbff;
  --muted: #c8d4f7;
  --cyan: #38d6ff;
  --violet: #8d66ff;
  --pink: #ff5ec4;
  --panel: rgba(255,255,255,.1);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 20% 4%, rgba(56,214,255,.28), transparent 30%),
    radial-gradient(circle at 86% 14%, rgba(255,94,196,.22), transparent 26%),
    linear-gradient(135deg, #071027 0%, #22105a 52%, #061b31 100%);
  line-height: 1.75;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: linear-gradient(to bottom, #000, transparent 72%);
}
a { color: inherit; }
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px 5vw;
  background: rgba(7,16,39,.78);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,255,255,.14);
}
.brand { font-size: 22px; font-weight: 900; color: var(--cyan); text-decoration: none; }
nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 16px; font-weight: 700; }
nav a { text-decoration: none; color: #edf2ff; }
nav a:hover, .brand:hover { color: var(--cyan); }
.hero {
  min-height: 92vh;
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, .65fr);
  align-items: center;
  gap: 48px;
  padding: 76px 5vw 70px;
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute;
  left: 6%;
  bottom: 10%;
  width: 74%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan), var(--pink), transparent);
  transform: rotate(-16deg);
}
.hero-copy { position: relative; z-index: 2; animation: slide-up .8s ease both; }
.eyebrow, .section-head p { color: var(--cyan); font-weight: 900; text-transform: uppercase; margin: 0 0 10px; }
h1 { margin: 0; max-width: 900px; font-size: clamp(48px, 8vw, 104px); line-height: 1; letter-spacing: 0; }
.hero .hero-copy h1 { font-size: clamp(40px, 5.8vw, 78px); line-height: 1.05; }
html[lang="zh-CN"] .hero-copy {
  max-width: 820px;
}
html[lang="zh-CN"] .hero .hero-copy h1 {
  max-width: 760px;
  font-size: clamp(38px, 5vw, 70px);
  line-height: 1.16;
}
h2 { margin: 0; font-size: clamp(34px, 5vw, 58px); line-height: 1.1; }
h3 { margin: 0 0 10px; font-size: 24px; line-height: 1.3; }
.tagline { margin: 18px 0 8px; font-size: clamp(24px, 3vw, 42px); font-weight: 900; color: #fff; }
html[lang="zh-CN"] .tagline {
  max-width: 760px;
  font-size: clamp(22px, 3vw, 36px);
  line-height: 1.45;
}
.lead { max-width: 760px; margin: 0; font-size: 19px; color: var(--muted); }
html[lang="zh-CN"] .lead {
  max-width: 720px;
  font-size: 18px;
  line-height: 1.85;
}
.deadline { margin: 20px 0 0; font-size: 20px; color: #fff; font-weight: 800; }
html[lang="zh-CN"] .deadline { margin-top: 16px; font-size: 18px; }
.actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 28px; }
.btn { padding: 12px 22px; border-radius: 6px; text-decoration: none; font-weight: 900; border: 1px solid rgba(255,255,255,.25); }
.actions .btn {
  width: 180px;
  grid-column: auto;
  flex: 0 0 auto;
  justify-content: center;
  text-align: center;
}
.btn.primary { background: linear-gradient(90deg, var(--cyan), #b9a0ff); color: #071027; border: 0; }
.btn.secondary { background: rgba(255,255,255,.08); }
.btn:hover { transform: translateY(-4px); box-shadow: 0 16px 38px rgba(56,214,255,.22); }
.portal-card {
  padding: 28px;
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 8px;
  background: linear-gradient(135deg, rgba(56,214,255,.16), rgba(255,94,196,.1));
  box-shadow: 0 24px 80px rgba(0,0,0,.22);
}
.portal-card p {
  max-width: 820px;
  margin: 0;
  color: var(--muted);
  font-size: 18px;
}
.portal-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 22px 0 12px;
}
.portal-note {
  font-weight: 800;
  color: #fff !important;
}
.form-modal {
  width: min(1080px, calc(100vw - 32px));
  max-height: min(88vh, 900px);
  padding: 0;
  border: 1px solid rgba(255,255,255,.22);
  border-radius: 8px;
  color: var(--ink);
  background: linear-gradient(135deg, #101b3f, #241459 58%, #071b32);
  box-shadow: 0 40px 120px rgba(0,0,0,.55);
}
.form-modal::backdrop {
  background: rgba(2,7,18,.72);
  backdrop-filter: blur(8px);
}
.modal-shell {
  max-height: min(88vh, 900px);
  overflow: auto;
  padding: 28px;
}
.modal-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 22px;
  padding-bottom: 18px;
  border-bottom: 1px solid rgba(255,255,255,.16);
}
.modal-head h2 {
  max-width: 820px;
  font-size: clamp(28px, 4vw, 44px);
}
.modal-close {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(255,255,255,.28);
  border-radius: 50%;
  color: #fff;
  background: rgba(255,255,255,.08);
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
}
.web-form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}
.web-form-grid label {
  display: grid;
  gap: 8px;
  color: #fff;
  font-weight: 800;
}
.web-form-grid input,
.web-form-grid textarea {
  width: 100%;
  border: 1px solid rgba(255,255,255,.24);
  border-radius: 6px;
  padding: 12px 13px;
  color: #fff;
  background: rgba(255,255,255,.1);
  font: inherit;
}
.web-form-grid input[type="file"] {
  padding: 12px;
  cursor: pointer;
}
.web-form-grid textarea {
  resize: vertical;
}
.span-2 {
  grid-column: 1 / -1;
}
.upload-field {
  padding: 16px;
  border: 1px dashed rgba(56,214,255,.45);
  border-radius: 8px;
  background: rgba(56,214,255,.08);
}
.upload-field span,
.declaration-copy p {
  color: var(--muted);
  font-weight: 500;
}
.declaration-copy {
  display: grid;
  gap: 12px;
  margin-bottom: 20px;
  padding: 20px;
  border-radius: 8px;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.14);
}
.declaration-copy p {
  margin: 0;
}
.consent-line {
  display: flex !important;
  grid-template-columns: none !important;
  align-items: center;
  gap: 10px !important;
}
.consent-line input {
  width: 20px;
  height: 20px;
}
.modal-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid rgba(255,255,255,.14);
}
.paper-modal {
  width: min(1080px, calc(100vw - 28px));
  background: #f8fafc;
  color: #111827;
}
.paper-shell {
  position: relative;
  padding: 34px 14px 24px;
}
.paper-modal .modal-head {
  position: absolute;
  top: 14px;
  right: 14px;
  z-index: 2;
  margin: 0;
  padding: 0;
  border: 0;
}
.paper-modal .modal-head > div {
  display: none;
}
.paper-modal .modal-close {
  width: 34px;
  height: 34px;
  color: #111827;
  border-color: #b8c2d8;
  background: #fff;
  font-size: 24px;
  box-shadow: 0 10px 24px rgba(15, 23, 42, .12);
}
.paper-modal .modal-close:hover {
  color: #fff;
  border-color: #2455ff;
  background: #2455ff;
}
.paper-form {
  padding: 0 0 0;
}
.paper-form h3 {
  margin: 0 44px 14px;
  color: #111827;
  text-align: center;
  font-size: 25px;
  line-height: 1.25;
  font-weight: 900;
}
.submission-package-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  overflow: hidden;
  color: #111827;
  background: #fff;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  box-shadow: 0 10px 26px rgba(15, 23, 42, .1);
}
.submission-package-table th {
  padding: 22px 20px;
  color: #fff;
  text-align: left;
  font-size: 22px;
  background: linear-gradient(90deg, #1537bf, #7a45e8);
}
.submission-package-table th + th {
  border-left: 1px solid rgba(255,255,255,.22);
}
.submission-package-table td {
  width: 50%;
  padding: 22px 24px;
  vertical-align: middle;
  border-top: 1px solid #dbe3f0;
}
.submission-package-table td + td {
  border-left: 1px solid #dbe3f0;
}
.download-card {
  position: relative;
  display: grid;
  gap: 9px;
  min-height: 96px;
  padding: 22px 20px 22px 36px;
  color: #0f1f55;
  text-decoration: none;
  background: linear-gradient(135deg, #f1fbff, #f5f1ff);
  border: 1px solid #bcd3ff;
  border-radius: 8px;
}
.download-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  bottom: 14px;
  width: 5px;
  border-radius: 0 999px 999px 0;
  background: linear-gradient(180deg, #33d3ff, #8f55ff);
}
.download-card strong {
  font-size: 22px;
  line-height: 1.25;
}
.download-card span {
  color: #46516b;
  font-size: 16px;
  line-height: 1.5;
}
.download-card:hover {
  border-color: #6a8fff;
  box-shadow: 0 16px 34px rgba(36, 85, 255, .16);
}
.email-submit-card {
  display: grid;
  gap: 9px;
  min-height: 96px;
  padding: 22px;
  color: #102047;
  background: linear-gradient(135deg, #f8fbff, #f3f7ff);
  border: 1px dashed #9db4e5;
  border-radius: 8px;
}
.email-submit-card strong {
  font-size: 22px;
  line-height: 1.25;
}
.email-submit-card span {
  color: #4b5563;
  font-size: 16px;
  line-height: 1.5;
}
.package-upload {
  min-height: 86px;
  justify-content: center;
  padding: 18px;
  background: #f8fbff;
  border: 1px dashed #9db4e5;
  border-radius: 8px;
}
.package-upload b {
  min-width: 116px;
  color: #fff;
  background: linear-gradient(90deg, #2455ff, #33caff);
  border: 0;
}
.package-upload em {
  flex-basis: 100%;
  text-align: center;
  color: #4b5563;
}
.filename-rule {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: center;
  justify-content: center;
  margin: 18px 0 0;
  padding: 16px 18px;
  color: #13204d;
  background: linear-gradient(90deg, rgba(51, 211, 255, .12), rgba(143, 85, 255, .12));
  border: 1px solid rgba(88, 126, 255, .24);
  border-radius: 8px;
  font-size: 16px;
}
.filename-rule strong {
  color: #1537bf;
}
.filename-rule span {
  font-weight: 700;
}
.submission-note {
  max-width: 960px;
  margin: 0 auto 12px;
  color: #4b5563;
  text-align: center;
  font-size: 18px;
  line-height: 1.8;
}
.submission-actions {
  display: flex;
  justify-content: center;
  margin-top: 18px;
  padding-top: 0;
  border-top: 0;
}
.submission-actions .btn.primary {
  width: min(460px, 100%);
  min-width: 0;
  padding: 16px 28px;
  font-size: 18px;
}
.paper-table-legacy {
  display: none !important;
}
.paper-table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
  background: #fff;
  color: #111827;
  border: 2px solid #111;
}
.paper-table th,
.paper-table td {
  min-height: 54px;
  padding: 10px;
  border: 1.5px solid #111;
  vertical-align: middle;
}
.paper-table th {
  width: 16%;
  text-align: center;
  font-weight: 900;
  background: #fafafa;
}
.paper-table td {
  background: #fff;
}
.paper-table input,
.paper-table textarea {
  width: 100%;
  border: 0;
  outline: 0;
  color: #111827;
  background: transparent;
  font: inherit;
}
.paper-table textarea {
  resize: vertical;
}
.paper-table small {
  font-size: 12px;
  line-height: 1.35;
}
.photo-cell {
  width: 20%;
  text-align: center;
  font-weight: 900;
}
.photo-cell span {
  display: block;
  margin-bottom: 12px;
}
.photo-cell .upload-control {
  justify-content: center;
}
.photo-cell .upload-control em {
  flex-basis: 100%;
  text-align: center;
}
.photo-cell input,
.file-cell input {
  font-size: 13px;
}
.upload-control {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}
.upload-control input[type="file"] {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}
.upload-control b {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  padding: 7px 12px;
  border: 1px solid #9ca3af;
  border-radius: 5px;
  color: #111827;
  background: #f8fafc;
  font-size: 14px;
  line-height: 1;
  cursor: pointer;
}
.upload-control em {
  color: #374151;
  font-style: normal;
  font-size: 14px;
}
.file-cell {
  display: grid;
  gap: 8px;
}
.file-cell span {
  color: #4b5563;
  font-size: 14px;
}
.integrity-panel {
  margin-top: 18px;
  padding: 18px;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  color: #111827;
  background: #fff;
}
.integrity-panel h3 {
  text-align: left;
  margin-bottom: 10px;
}
.integrity-panel p {
  margin: 8px 0;
  color: #374151;
  line-height: 1.8;
}
.integrity-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 14px 0;
}
.action-strip {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 8px 4px 12px;
  border: 0;
  background: transparent;
  color: #1233b7;
  font: inherit;
  font-weight: 950;
  letter-spacing: 0;
  text-decoration: none;
  cursor: pointer;
}
.action-strip::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 4px;
  height: 4px;
  border-radius: 999px;
  background: linear-gradient(90deg, #33d3ff, #2455ff, #a676ff);
  box-shadow: 0 10px 24px rgba(51, 211, 255, .26);
}
.action-strip:hover {
  color: #071027;
}
.integrity-download {
  min-width: 300px;
  justify-content: flex-start;
}
.integrity-upload {
  margin-top: 10px;
}
.integrity-check {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 12px;
  font-weight: 900;
}
.integrity-check input {
  width: 20px;
  height: 20px;
}
.paper-modal .modal-actions {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  justify-content: stretch;
  border-top-color: #d4d8e2;
}
.modal-actions-left,
.modal-actions-center,
.modal-actions-right {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}
.modal-actions-left {
  justify-content: flex-start;
}
.modal-actions-center {
  justify-content: center;
}
.modal-actions-right {
  justify-content: flex-end;
}
.paper-modal .modal-actions .btn {
  min-width: 170px;
  text-align: center;
}
.paper-modal .modal-actions .btn.secondary {
  min-width: 120px;
  color: #1f2937;
  background: #fff;
  border: 1px solid #c7d2fe;
  box-shadow: none;
}
.paper-modal .modal-actions .btn.primary {
  min-width: 240px;
}
.registration-download {
  min-width: 220px;
  justify-content: flex-start;
  font-size: 18px;
}
.hero-visual {
  position: relative;
  min-height: 520px;
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 8px;
  background: linear-gradient(145deg, rgba(255,255,255,.13), rgba(255,255,255,.035));
  box-shadow: 0 36px 120px rgba(0,0,0,.38);
  overflow: hidden;
  animation: slide-up .9s ease .12s both, jump-soft 5.2s ease-in-out infinite;
}
.hero-visual::before, .hero-visual::after {
  content: "";
  position: absolute;
  inset: 74px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.16);
}
.hero-visual::after { inset: 132px; border-color: rgba(56,214,255,.35); transform: rotate(65deg); }
.poster-visual {
  display: grid;
  place-items: center;
  padding: 22px;
}
.poster-visual img {
  position: relative;
  z-index: 1;
  width: min(100%, 360px);
  max-height: 470px;
  object-fit: contain;
  border-radius: 6px;
  box-shadow: 0 24px 70px rgba(0,0,0,.42);
}
.image-missing {
  display: grid;
  place-items: center;
  min-height: 260px;
  padding: 24px;
  border: 1px dashed rgba(255,255,255,.3);
  border-radius: 8px;
  color: var(--muted);
  background: rgba(255,255,255,.08);
  text-align: center;
  font-weight: 800;
}
.poster-visual .orb,
.poster-visual i {
  opacity: .22;
}
.orb {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 210px;
  height: 210px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: rgba(7,16,39,.75);
  box-shadow: 0 0 90px rgba(56,214,255,.28), inset 0 0 40px rgba(141,102,255,.25);
  animation: pulse-glow 4.6s ease-in-out infinite;
}
.orb span { font-size: 76px; font-weight: 900; }
.hero-visual i {
  position: absolute;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--cyan), var(--pink));
  box-shadow: 0 0 28px rgba(56,214,255,.75);
}
.hero-visual i:nth-child(2) { left: 20%; top: 28%; }
.hero-visual i:nth-child(3) { right: 17%; top: 32%; }
.hero-visual i:nth-child(4) { left: 28%; bottom: 22%; }
.hero-visual i:nth-child(5) { right: 25%; bottom: 18%; }
.hero-visual i:nth-child(6) { left: 48%; top: 16%; }
.hero-visual i:nth-child(7) { left: 52%; bottom: 14%; }
.section { padding: 86px 5vw; }
.section > *, .cta-band { animation: slide-up .75s ease both; }
.page-hero {
  min-height: 520px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, .55fr);
  align-items: center;
  gap: 42px;
  padding: 82px 5vw 64px;
  background:
    radial-gradient(circle at 16% 18%, rgba(56,214,255,.18), transparent 28%),
    radial-gradient(circle at 78% 22%, rgba(255,94,196,.16), transparent 26%);
}
.page-hero > div { animation: slide-up .75s ease both; }
.theme-visual {
  position: relative;
  width: 100%;
  min-height: 360px;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 8px;
  overflow: hidden;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,.18);
  background:
    radial-gradient(circle at 50% 50%, rgba(56,214,255,.3), transparent 24%),
    radial-gradient(circle at 62% 42%, rgba(255,94,196,.24), transparent 28%),
    linear-gradient(145deg, rgba(255,255,255,.14), rgba(255,255,255,.04));
  box-shadow: 0 30px 90px rgba(0,0,0,.28);
  animation: slide-up .9s ease .1s both, jump-soft 5.8s ease-in-out infinite;
}
.theme-visual::before,
.theme-visual::after {
  content: "";
  position: absolute;
  inset: 54px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.18);
}
.theme-visual::after {
  inset: 102px;
  border-color: rgba(56,214,255,.36);
  transform: rotate(62deg);
}
.theme-visual span {
  position: relative;
  z-index: 1;
  font-size: clamp(42px, 5vw, 72px);
  line-height: 1;
  font-weight: 900;
  color: #fff;
}
.theme-visual b {
  position: relative;
  z-index: 1;
  color: var(--cyan);
  font-size: 22px;
}
.theme-visual i {
  position: absolute;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--cyan), var(--pink));
  box-shadow: 0 0 26px rgba(56,214,255,.7);
}
.theme-visual i:nth-of-type(1) { left: 22%; top: 30%; }
.theme-visual i:nth-of-type(2) { right: 24%; top: 34%; }
.theme-visual i:nth-of-type(3) { left: 48%; bottom: 18%; }
.section-head { margin-bottom: 24px; border-bottom: 1px solid rgba(255,255,255,.16); padding-bottom: 18px; }
.about-grid, .submit-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.submit-grid:has(.rules:only-child) { grid-template-columns: minmax(0, 1fr); }
.about-grid article, .feature-card, .rules, .form {
  background: var(--panel);
  border: 1px solid rgba(255,255,255,.15);
  border-radius: 8px;
  padding: 26px;
  box-shadow: 0 24px 80px rgba(0,0,0,.2);
}
.about-grid article:hover, .feature-card:hover, .track-grid article:hover, .contact-grid article:hover, .detail-grid article:hover, .org-grid article:hover, .post-grid article:hover {
  transform: translateY(-8px);
  border-color: rgba(56,214,255,.42);
  box-shadow: 0 28px 90px rgba(56,214,255,.16);
}
.about-grid p, .feature-card p, .rules { color: var(--muted); }
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.full { grid-column: 1 / -1; }
.feature-card b { color: var(--cyan); font-size: 28px; }
.guest-strip {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 8px;
}
.guest-strip span, .team-list span {
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.16);
  font-weight: 800;
}
.status-table {
  overflow: hidden;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,.16);
  background: rgba(255,255,255,.08);
}
.status-table div {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
}
.status-table div:first-child { background: rgba(255,255,255,.12); }
.status-table b, .status-table span { padding: 16px; border-bottom: 1px solid rgba(255,255,255,.1); }
.mini-title { margin-top: 34px; font-size: 30px; text-align: center; }
.team-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}
.detail-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 18px;
}
.detail-grid article {
  display: grid;
  place-items: center;
  min-height: 168px;
  padding: 22px;
  border-radius: 8px;
  background: linear-gradient(135deg, rgba(56,214,255,.2), rgba(141,102,255,.22));
  border: 1px solid rgba(255,255,255,.16);
  text-align: center;
}
.detail-grid b { color: var(--cyan); font-size: 20px; }
.detail-grid span { font-size: 22px; font-weight: 900; }
.org-grid, .post-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.org-grid article, .post-grid article {
  padding: 24px;
  border-radius: 8px;
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.15);
}
.track-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 18px;
}
.track-card {
  position: relative;
  grid-column: span 2;
  min-height: 188px;
  display: flex;
  padding: 0;
  border-radius: 8px;
  overflow: hidden;
  background:
    linear-gradient(145deg, rgba(255,255,255,.13), rgba(255,255,255,.045)),
    rgba(8, 18, 44, .34);
  border: 1px solid rgba(255,255,255,.18);
  box-shadow: 0 26px 80px rgba(0,0,0,.24);
}
.track-card:nth-child(-n+2) {
  grid-column: span 3;
  min-height: 178px;
}
.track-card::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 88% 8%, var(--track-glow, rgba(56,214,255,.24)), transparent 34%),
    linear-gradient(120deg, transparent 0 68%, rgba(255,255,255,.06) 68% 100%);
}
.track-copy {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 10px;
  align-content: start;
  width: 100%;
  padding: 24px;
}
.track-copy span {
  width: max-content;
  min-height: 0;
  padding: 5px 9px;
  border-radius: 999px;
  color: #031027;
  background: var(--track-accent, #48e3ff);
  font-size: 12px;
  font-weight: 950;
  letter-spacing: 0;
}
.track-copy b {
  display: block;
  min-height: 0;
  padding: 0;
  color: #fff;
  background: transparent;
  font-size: 18px;
  line-height: 1.22;
}
.track-copy p {
  margin: 0;
  color: rgba(232, 241, 255, .76);
  font-size: 14px;
  line-height: 1.55;
}
.track-ai { --track-accent: #49e5ff; --track-glow: rgba(73,229,255,.26); --img-pos: center; }
.track-mechanics { --track-accent: #9d8bff; --track-glow: rgba(157,139,255,.25); --img-pos: center; }
.track-data { --track-accent: #ff8b8f; --track-glow: rgba(255,139,143,.24); --img-pos: center; }
.track-food { --track-accent: #53f0b4; --track-glow: rgba(83,240,180,.25); --img-pos: 36% center; }
.track-gene { --track-accent: #ffd166; --track-glow: rgba(255,209,102,.22); --img-pos: 56% center; }
.cta-band {
  margin: 20px 5vw;
  min-height: 260px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  padding: 38px 5vw;
  border-radius: 8px;
  background:
    radial-gradient(circle at 20% 20%, rgba(56,214,255,.36), transparent 28%),
    linear-gradient(135deg, rgba(20,43,128,.88), rgba(99,51,184,.88));
  border: 1px solid rgba(255,255,255,.16);
}
.cta-band p { margin: 0 0 8px; color: var(--cyan); font-weight: 900; text-transform: uppercase; }
.cta-band h2 { max-width: 760px; }
.rules ul { margin: 0; padding-left: 22px; }
.forum-info-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}
.forum-info-grid article {
  min-height: 230px;
  padding: 22px;
  border-radius: 8px;
  background:
    linear-gradient(150deg, rgba(255,255,255,.13), rgba(255,255,255,.055)),
    rgba(8, 18, 44, .22);
  border: 1px solid rgba(255,255,255,.15);
  box-shadow: 0 22px 70px rgba(0,0,0,.2);
}
.forum-info-grid h3 {
  margin-bottom: 10px;
  color: #fff;
  font-size: 18px;
}
.forum-info-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
}
.form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  background: #fff;
  color: #132043;
}
label { display: grid; gap: 6px; font-weight: 800; }
input, select, button { width: 100%; font: inherit; border-radius: 6px; border: 1px solid #cbd4ee; padding: 11px 12px; }
button { grid-column: 1 / -1; border: 0; color: #fff; font-weight: 900; background: linear-gradient(90deg, #284cff, #8f3dff); }
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.contact-grid article {
  padding: 24px;
  border-radius: 8px;
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.15);
}
footer { padding: 42px 5vw 48px; color: var(--muted); border-top: 1px solid rgba(255,255,255,.14); }
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr .8fr 1fr;
  gap: 24px;
  max-width: 1180px;
  margin: 0 auto;
}
.footer-grid h3 { color: #fff; }
.footer-grid p { margin: 6px 0; }
.copyright { margin-top: 28px; padding-top: 18px; border-top: 1px solid rgba(255,255,255,.12); text-align: center; }
@media (max-width: 980px) {
  .topbar { align-items: flex-start; flex-direction: column; }
  .hero, .page-hero, .about-grid, .submit-grid { grid-template-columns: 1fr; }
  .features, .track-grid, .contact-grid, .detail-grid, .org-grid, .post-grid, .footer-grid, .forum-info-grid { grid-template-columns: repeat(2, 1fr); }
  .track-card, .track-card:nth-child(-n+2) { grid-column: auto; }
  .hero-visual { min-height: 420px; }
  .cta-band { align-items: flex-start; flex-direction: column; }
}
@media (max-width: 640px) {
  .hero { padding-top: 48px; }
  .features, .track-grid, .form, .contact-grid, .detail-grid, .org-grid, .post-grid, .footer-grid, .forum-info-grid, .status-table div, .web-form-grid { grid-template-columns: 1fr; }
  .section { padding: 60px 5vw; }
  .modal-shell { padding: 20px; }
  .paper-table { min-width: 760px; }
  .paper-form { overflow-x: auto; }
}

@keyframes slide-up {
  from { opacity: 1; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes jump-soft {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-16px); }
}
@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 90px rgba(56,214,255,.28), inset 0 0 40px rgba(141,102,255,.25); }
  50% { box-shadow: 0 0 130px rgba(255,94,196,.32), inset 0 0 58px rgba(56,214,255,.3); }
}