:root {
  color-scheme: light;
  --bg: #f2f7ff;
  --panel: #ffffff;
  --panel-soft: #eaf4ff;
  --text: #10264f;
  --muted: #63769a;
  --line: #d9e6fb;
  --primary: #0a66f0;
  --primary-dark: #034db9;
  --accent: #6fe25f;
  --warm: #ffe75f;
  --focus: rgba(10, 102, 240, 0.18);
  --shadow: 0 24px 70px rgba(32, 47, 77, 0.13);
  --radius: 8px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  background:
    linear-gradient(135deg, rgba(10, 102, 240, 0.18), transparent 34%),
    linear-gradient(225deg, rgba(111, 226, 95, 0.22), transparent 30%),
    var(--bg);
}

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

button,
input,
textarea {
  font: inherit;
}

.share-image-probe {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
}

.wx-share-debug {
  position: fixed;
  right: 12px;
  bottom: 12px;
  left: 12px;
  z-index: 100;
  max-height: 42vh;
  overflow: auto;
  padding: 12px;
  border: 1px solid rgba(10, 102, 240, 0.3);
  border-radius: var(--radius);
  color: #10264f;
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 10px 30px rgba(16, 38, 79, 0.18);
  font-size: 12px;
  line-height: 1.55;
  white-space: pre-wrap;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 18px 0;
  backdrop-filter: blur(12px);
}

.brand,
.top-nav {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-weight: 800;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius);
  color: #fff;
  background: linear-gradient(135deg, var(--primary), #17c9ff);
}

.top-nav {
  gap: 8px;
  padding: 6px;
  border: 1px solid rgba(223, 230, 242, 0.85);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
}

.top-nav a {
  padding: 8px 14px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 14px;
}

.top-nav a:hover,
.top-nav a.is-active {
  color: var(--text);
  background: #fff;
}

.page {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 26px 0 72px;
}

.hero {
  min-height: calc(100svh - 104px);
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(320px, 1.08fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
}

.hero-copy {
  max-width: 620px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 12px;
  color: var(--primary-dark);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

.hero h1 {
  margin-bottom: 22px;
  font-size: clamp(40px, 6vw, 76px);
  line-height: 1.04;
  letter-spacing: 0;
  color: var(--primary);
  text-shadow: 0 8px 0 rgba(10, 102, 240, 0.08);
}

.lead {
  max-width: 520px;
  margin-bottom: 30px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.8;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 28px;
}

.hero-meta span {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid rgba(10, 102, 240, 0.16);
  border-radius: 999px;
  color: var(--primary-dark);
  background: #fff;
  font-size: 14px;
  font-weight: 750;
}

.organizer {
  margin: -10px 0 28px;
  color: var(--primary-dark);
  font-size: 14px;
  font-weight: 750;
}

.hero-actions,
.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.mobile-home-actions {
  display: none;
}

.mobile-home-actions[hidden] {
  display: none !important;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  font-weight: 750;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  color: #fff;
  background: var(--primary);
  box-shadow: 0 12px 24px rgba(10, 102, 240, 0.24);
}

.button-primary:hover {
  background: var(--primary-dark);
}

.button-ghost {
  color: var(--text);
  background: rgba(255, 255, 255, 0.78);
  border-color: var(--line);
}

.hero-visual {
  position: relative;
  min-height: 520px;
}

.art-card {
  position: absolute;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--shadow);
}

.art-card-primary {
  inset: 44px 32px 36px 0;
  background:
    radial-gradient(circle at 24% 18%, rgba(255, 231, 95, 0.98), transparent 17%),
    radial-gradient(circle at 78% 30%, rgba(111, 226, 95, 0.82), transparent 20%),
    linear-gradient(145deg, #0d5ce8 0%, #13a7ff 48%, #d9f85d 100%);
}

.art-card-secondary {
  right: 0;
  bottom: 0;
  width: min(48%, 250px);
  min-height: 300px;
  padding: 20px;
}

.art-sun {
  position: absolute;
  top: 15%;
  left: 18%;
  width: 92px;
  height: 92px;
  border-radius: 50%;
  background: #ffd862;
  box-shadow: 0 0 80px rgba(255, 216, 98, 0.72);
}

.art-grid {
  position: absolute;
  inset: 45% -12% -18%;
  background:
    linear-gradient(rgba(255, 255, 255, 0.24) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.2) 1px, transparent 1px);
  background-size: 34px 34px;
  transform: perspective(420px) rotateX(62deg);
}

.art-ribbon {
  position: absolute;
  right: -44px;
  top: 58px;
  width: 200px;
  height: 62%;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.32);
  transform: rotate(28deg);
}

.poster-block {
  width: 100%;
  aspect-ratio: 1;
  margin-bottom: 20px;
  border-radius: var(--radius);
  background:
    radial-gradient(circle at 70% 20%, rgba(111, 226, 95, 0.9), transparent 24%),
    linear-gradient(135deg, #e9f5ff, #cfe5ff);
}

.poster-line {
  height: 10px;
  margin-top: 12px;
  border-radius: 999px;
  background: #dce5f0;
}

.poster-line.short {
  width: 62%;
  background: var(--primary);
}

.poster-line.soft {
  width: 82%;
  background: #d3f7a0;
}

.activity-panel,
.form-shell,
.info-section,
.timeline-section,
.award-section {
  padding: clamp(22px, 4vw, 42px);
  border: 1px solid rgba(223, 230, 242, 0.9);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 18px 50px rgba(32, 47, 77, 0.08);
}

.activity-panel {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 32px;
  margin-bottom: 22px;
}

.activity-panel h2,
.form-heading h1,
.section-heading h2,
.award-section h2 {
  margin-bottom: 8px;
  font-size: clamp(28px, 4vw, 42px);
}

.section-desc,
.section-heading p,
.award-section p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.feature-item {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.feature-icon {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 32px;
  margin-bottom: 16px;
  border-radius: var(--radius);
  color: #fff;
  background: var(--primary);
  font-size: 13px;
  font-weight: 800;
}

.feature-item h3 {
  margin-bottom: 8px;
}

.feature-item p,
.form-heading p,
.upload-card p,
.upload-note,
.requirement-item p,
.timeline-grid p {
  color: var(--muted);
  line-height: 1.7;
}

.info-section,
.timeline-section,
.award-section {
  margin-top: 22px;
}

.section-heading {
  max-width: 720px;
  margin-bottom: 22px;
}

.requirement-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.requirement-item {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.requirement-item > span {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  color: var(--primary-dark);
  background: var(--warm);
  font-weight: 900;
}

.requirement-item h3 {
  margin-bottom: 6px;
  font-size: 18px;
}

.requirement-item p {
  margin-bottom: 0;
}

.timeline-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.timeline-grid article {
  position: relative;
  min-height: 190px;
  padding: 22px;
  border-radius: var(--radius);
  color: #fff;
  background: linear-gradient(145deg, var(--primary), #0bb4ff);
  overflow: hidden;
}

.timeline-grid article::after {
  content: "";
  position: absolute;
  right: -28px;
  bottom: -38px;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: rgba(111, 226, 95, 0.42);
}

.timeline-grid strong,
.timeline-grid span {
  display: block;
  position: relative;
  z-index: 1;
}

.timeline-grid strong {
  margin-bottom: 8px;
  font-size: 22px;
}

.timeline-grid span {
  margin-bottom: 18px;
  color: var(--warm);
  font-weight: 800;
}

.timeline-grid p {
  position: relative;
  z-index: 1;
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.9);
}

.award-section {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(280px, 1.12fr);
  gap: 26px;
  align-items: center;
  background:
    linear-gradient(135deg, rgba(10, 102, 240, 0.92), rgba(10, 102, 240, 0.78)),
    #0a66f0;
  color: #fff;
}

.award-section .section-kicker,
.award-section p {
  color: rgba(255, 255, 255, 0.86);
}

.award-card {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  min-height: 180px;
  padding: 26px;
  border: 3px solid var(--warm);
  border-radius: var(--radius);
  color: var(--text);
  background: #fff;
  text-align: center;
  transform: rotate(-2deg);
  box-shadow: 12px 12px 0 rgba(111, 226, 95, 0.5);
}

.award-card strong {
  font-size: clamp(20px, 3vw, 32px);
  line-height: 1.35;
}

.award-card span {
  color: var(--primary);
  font-size: 28px;
  font-weight: 900;
}

.page-submit {
  max-width: 960px;
}

.form-heading {
  margin-bottom: 28px;
}

.submission-form {
  display: grid;
  gap: 20px;
}

.field-row,
.upload-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.field {
  display: grid;
  gap: 8px;
}

label,
.label-line {
  font-weight: 750;
}

label span {
  color: var(--accent);
}

.label-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

output {
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--text);
  background: #fff;
  outline: none;
}

input {
  height: 48px;
  padding: 0 14px;
}

textarea {
  min-height: 132px;
  padding: 14px;
  resize: vertical;
}

input:focus,
textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--focus);
}

.field-error {
  min-height: 18px;
  margin: 0;
  color: var(--accent);
  font-size: 13px;
  line-height: 1.4;
}

.upload-card {
  display: grid;
  align-content: start;
  gap: 16px;
  min-height: 248px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.upload-card h2 {
  margin-bottom: 6px;
  font-size: 20px;
}

.upload-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 46px;
  border: 1px dashed rgba(10, 102, 240, 0.55);
  border-radius: var(--radius);
  color: var(--primary-dark);
  background: var(--panel-soft);
  cursor: pointer;
}

.upload-button input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.upload-status {
  display: grid;
  gap: 10px;
}

.file-meta {
  min-height: 22px;
  color: var(--muted);
  font-size: 14px;
  overflow-wrap: anywhere;
}

.progress {
  overflow: hidden;
  height: 8px;
  border-radius: 999px;
  background: #edf1f7;
}

.progress span {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: var(--primary);
  transition: width 0.25s ease;
}

.upload-note {
  margin: -4px 0 2px;
  font-size: 14px;
}

.form-actions {
  justify-content: flex-end;
  margin-top: 6px;
}

.button[disabled] {
  cursor: not-allowed;
  opacity: 0.52;
  transform: none;
  box-shadow: none;
  filter: grayscale(0.12);
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: grid;
  place-items: center;
  padding: 24px;
}

.modal[hidden] {
  display: none;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(17, 24, 39, 0.48);
}

.modal-panel {
  position: relative;
  z-index: 1;
  width: min(380px, 100%);
  padding: 32px;
  border-radius: var(--radius);
  background: #fff;
  text-align: center;
  box-shadow: var(--shadow);
}

.modal-icon {
  display: inline-grid;
  place-items: center;
  width: 58px;
  height: 58px;
  margin-bottom: 18px;
  border-radius: 50%;
  color: #fff;
  background: var(--primary);
  font-size: 34px;
  font-weight: 800;
}

.modal-panel h2 {
  margin-bottom: 8px;
}

.modal-panel p {
  margin-bottom: 24px;
  color: var(--muted);
}

@media (max-width: 860px) {
  .site-header {
    width: min(100% - 24px, 680px);
    padding: 14px 0;
  }

  .top-nav a {
    padding: 8px 10px;
  }

  .page {
    width: min(100% - 24px, 680px);
    padding-top: 16px;
  }

  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
    padding-top: 10px;
  }

  .hero-copy {
    order: 1;
  }

  .hero-visual {
    order: 2;
    min-height: 360px;
  }

  .art-card-primary {
    inset: 8px 18px 34px 0;
  }

  .art-card-secondary {
    width: min(46%, 190px);
    min-height: 218px;
    padding: 14px;
  }

  .activity-panel {
    grid-template-columns: 1fr;
  }

  .feature-grid,
  .requirement-list,
  .timeline-grid,
  .award-section,
  .field-row,
  .upload-grid {
    grid-template-columns: 1fr;
  }

  .timeline-grid article {
    min-height: 160px;
  }

  .award-card {
    transform: none;
  }

  .form-actions {
    flex-direction: column-reverse;
  }

  .form-actions .button {
    width: 100%;
  }
}

@media (max-width: 520px) and (pointer: coarse) {
  body {
    padding-bottom: calc(92px + env(safe-area-inset-bottom));
  }

  .brand span:last-child {
    display: none;
  }

  .hero h1 {
    font-size: 38px;
  }

  .lead {
    font-size: 16px;
  }

  .hero-actions {
    display: none;
  }

  .activity-panel,
  .form-shell {
    padding: 20px;
  }

  .mobile-home-actions {
    position: fixed;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 40;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 10px;
    padding: 12px 14px calc(12px + env(safe-area-inset-bottom));
    border-top: 1px solid rgba(217, 230, 251, 0.95);
    background: rgba(255, 255, 255, 0.92);
    box-shadow: 0 -12px 34px rgba(16, 38, 79, 0.14);
    backdrop-filter: blur(14px);
  }

  .mobile-home-actions[hidden] {
    display: none;
  }

  .mobile-home-actions .button {
    min-height: 48px;
    padding: 0 12px;
    font-size: 15px;
    white-space: nowrap;
  }
}