:root {
  color-scheme: light;
  --bg: #f4f7fb;
  --surface: rgba(255, 255, 255, 0.9);
  --surface-strong: #ffffff;
  --text: #111827;
  --muted: #5b6472;
  --line: rgba(15, 23, 42, 0.11);
  --accent: #0f766e;
  --accent-2: #2563eb;
  --accent-3: #b7791f;
  --danger: #b91c1c;
  --shadow: 0 16px 42px rgba(15, 23, 42, 0.08);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  position: relative;
  overflow-x: hidden;
  font-family: Inter, "Noto Sans SC", system-ui, sans-serif;
  color: var(--text);
  background:
    linear-gradient(115deg, rgba(244, 248, 251, 0.96) 0%, rgba(237, 246, 243, 0.94) 48%, rgba(241, 246, 253, 0.96) 100%),
    #f4f7fb;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, rgba(244, 248, 251, 0.42) 0%, rgba(244, 248, 251, 0.74) 42%, rgba(244, 248, 251, 0.9) 100%),
    url("assets/%E6%A0%A1%E5%9B%AD1.jpg") left center / cover no-repeat;
  opacity: 0.58;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(15, 23, 42, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 23, 42, 0.035) 1px, transparent 1px),
    linear-gradient(115deg, transparent 0 12%, rgba(15, 118, 110, 0.08) 12.2% 12.55%, transparent 12.75% 100%),
    linear-gradient(145deg, transparent 0 38%, rgba(183, 121, 31, 0.10) 38.2% 38.5%, transparent 38.7% 100%);
  background-size: 32px 32px, 32px 32px, 100% 100%, 100% 100%;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.42), rgba(0, 0, 0, 0.10) 68%, transparent 100%);
}

button,
input,
textarea {
  font: inherit;
}

button {
  border: 0;
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
}

a {
  color: var(--accent-2);
  text-decoration: none;
}

.page-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 22px 0 40px;
  position: relative;
  z-index: 2;
}

.page-shell::before {
  content: "";
  position: fixed;
  right: max(-90px, calc((100vw - 1180px) / 2 - 140px));
  top: 96px;
  width: min(42vw, 500px);
  aspect-ratio: 1;
  z-index: -1;
  pointer-events: none;
  background: url("assets/%E6%A0%A1%E7%A2%91.png") center / contain no-repeat;
  opacity: 0.075;
  filter: grayscale(0.2) saturate(0.72) contrast(0.82) blur(0.8px);
  mix-blend-mode: multiply;
  mask-image: radial-gradient(circle at center, rgba(0, 0, 0, 0.52) 0 32%, rgba(0, 0, 0, 0.22) 54%, transparent 78%);
}

.page-shell::after {
  content: "";
  position: fixed;
  left: max(-80px, calc((100vw - 1180px) / 2 - 150px));
  bottom: 20px;
  width: min(34vw, 360px);
  aspect-ratio: 1;
  z-index: -1;
  pointer-events: none;
  border: 1px solid rgba(15, 118, 110, 0.14);
  border-radius: 50%;
  background:
    linear-gradient(transparent 47%, rgba(15, 118, 110, 0.16) 48% 52%, transparent 53%),
    linear-gradient(90deg, transparent 47%, rgba(37, 99, 235, 0.12) 48% 52%, transparent 53%);
  box-shadow:
    inset 0 0 0 28px rgba(15, 118, 110, 0.025),
    inset 0 0 0 72px rgba(37, 99, 235, 0.025);
  opacity: 0.55;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 22px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.brand-logo {
  width: auto;
  height: 65px;
  max-width: 420px;
  object-fit: contain;
  flex: 0 1 auto;
}

.lang-switch,
.secondary-btn,
.ghost-btn,
.primary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 999px;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.lang-switch:hover,
.secondary-btn:hover,
.ghost-btn:hover,
.primary-btn:hover,
.primary-link:hover {
  transform: translateY(-1px);
}

.lang-switch {
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid var(--line);
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.06);
  color: var(--text);
}

.layout {
  display: grid;
  gap: 18px;
}

.hero {
  display: grid;
  gap: 14px;
  padding: 22px 0 8px;
}

.hero-copy {
  display: grid;
  gap: 12px;
}

.hero h1 {
  margin: 0;
  font-size: clamp(1.65rem, 2.55vw, 2.75rem);
  line-height: 1.04;
  letter-spacing: 0;
}

.hero-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-pills span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 40px;
  padding: 9px 13px;
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid var(--line);
  border-radius: 999px;
  box-shadow: 0 8px 18px rgba(15, 23, 42, 0.04);
  backdrop-filter: blur(8px);
}

.hero-pills b {
  font-weight: 600;
}

.content-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(280px, 0.82fr);
  gap: 18px;
  align-items: start;
}

.upload-panel,
.info-panel {
  background: var(--surface);
  border: 1px solid rgba(15, 23, 42, 0.09);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.upload-panel {
  padding: 22px;
}

.panel-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
}

.panel-head h2,
.info-block h3,
.result-box h3 {
  margin: 0;
  font-size: 1.06rem;
}

.panel-head p {
  margin: 6px 0 0;
  color: var(--muted);
  line-height: 1.55;
}

.panel-head .panel-contact-note {
  margin-top: 4px;
  color: var(--accent);
  font-size: 0.9rem;
  font-weight: 500;
}

.panel-contact-note a {
  color: var(--accent);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 999px;
  background: rgba(15, 118, 110, 0.08);
  color: var(--accent);
  white-space: nowrap;
}

.mobile-only {
  display: none;
}

body.is-mobile-flow .device-note.mobile-only {
  display: flex;
}

body.is-mobile-flow .mobile-upload-steps.mobile-only {
  display: block;
}

body.is-mobile-flow .field-hint.mobile-only {
  display: block;
}

.device-note {
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 16px;
  padding: 12px 14px;
  border: 1px solid rgba(183, 121, 31, 0.24);
  border-radius: var(--radius);
  background: rgba(255, 251, 235, 0.86);
  color: #92400e;
}

.device-note svg {
  flex: 0 0 auto;
  margin-top: 2px;
}

.device-note p {
  margin: 0;
  line-height: 1.55;
}

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

.form-grid-wide {
  grid-column: 1 / -1;
}

label {
  display: grid;
  gap: 8px;
}

label > span {
  font-size: 0.9rem;
  font-weight: 600;
}

.field-hint {
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.45;
}

.required-label::before {
  content: "*";
  color: var(--danger);
  font-weight: 700;
  margin-right: 4px;
}

input,
textarea {
  width: 100%;
  border: 1px solid rgba(15, 23, 42, 0.12);
  border-radius: var(--radius);
  padding: 13px 14px;
  background: rgba(255, 255, 255, 0.96);
  color: var(--text);
  outline: none;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

input:focus,
textarea:focus {
  border-color: rgba(15, 118, 110, 0.52);
  box-shadow: 0 0 0 4px rgba(15, 118, 110, 0.12);
}

.full-width {
  margin-top: 14px;
}

.link-preview {
  margin-top: 16px;
  padding: 18px;
  border: 1px solid rgba(15, 118, 110, 0.18);
  background: rgba(240, 253, 250, 0.72);
  border-radius: var(--radius);
}

.link-preview-head {
  display: flex;
  gap: 14px;
  align-items: center;
}

.upload-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius);
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, 0.92);
  color: var(--accent);
  border: 1px solid rgba(15, 118, 110, 0.12);
  flex: 0 0 auto;
}

.link-preview strong {
  display: block;
  font-size: 1rem;
}

.link-preview p {
  margin: 6px 0 0;
  color: var(--muted);
  line-height: 1.55;
}

.submission-id {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-top: 14px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.72);
}

.submission-id span {
  color: var(--muted);
}

.submission-id b {
  overflow-wrap: anywhere;
}

.mobile-upload-note {
  display: none;
  align-items: flex-start;
  gap: 10px;
  margin-top: 14px;
  padding: 12px 14px;
  border: 1px solid rgba(37, 99, 235, 0.16);
  border-radius: var(--radius);
  background: rgba(239, 246, 255, 0.74);
  color: #1e3a8a;
}

body.is-mobile-flow .mobile-upload-note {
  display: flex;
}

.mobile-upload-note.is-warning {
  border-color: rgba(183, 121, 31, 0.26);
  background: rgba(255, 251, 235, 0.86);
  color: #92400e;
}

.mobile-upload-note svg {
  flex: 0 0 auto;
  margin-top: 2px;
}

.mobile-upload-note p {
  margin: 0;
  color: inherit;
}

.mobile-upload-steps {
  margin: 14px 0 0;
  padding-left: 20px;
  color: var(--muted);
  line-height: 1.65;
}

.link-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

body.is-mobile-flow .pc-upload-action,
body.is-mobile-flow #driveLink {
  display: none !important;
}

.secondary-btn,
.ghost-btn,
.primary-btn,
.primary-link {
  min-height: 44px;
  padding: 12px 16px;
}

.secondary-btn {
  background: var(--accent);
  color: white;
  box-shadow: 0 12px 25px rgba(15, 118, 110, 0.20);
}

.secondary-btn:disabled {
  background: rgba(148, 163, 184, 0.38);
  color: rgba(71, 85, 105, 0.76);
  border: 1px solid rgba(148, 163, 184, 0.28);
  box-shadow: none;
  transform: none;
}

.ghost-btn {
  background: rgba(255, 255, 255, 0.86);
  color: var(--text);
  border: 1px solid var(--line);
}

.primary-btn,
.primary-link {
  background: linear-gradient(135deg, var(--accent), #146fcb);
  color: white;
  box-shadow: 0 18px 30px rgba(37, 99, 235, 0.24);
}

.primary-btn {
  width: 100%;
}

.primary-link {
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.spinner {
  display: none;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.48);
  border-top-color: #ffffff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.primary-btn.is-loading > svg {
  display: none;
}

.primary-btn.is-loading .spinner {
  display: inline-block;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.progress-area {
  margin-top: 16px;
}

.progress-meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.92rem;
  color: var(--muted);
  margin-bottom: 8px;
}

.progress-track {
  width: 100%;
  height: 10px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.08);
  overflow: hidden;
}

.progress-bar {
  width: 0%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width 0.16s ease;
}

.form-actions {
  margin-top: 18px;
}

.info-panel {
  padding: 20px;
  display: grid;
  gap: 14px;
}

.info-block,
.copyright-card,
.result-box {
  padding: 16px;
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.68);
}

.info-block ol {
  margin: 12px 0 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.7;
}

.copyright-card h3 {
  margin: 0;
  font-size: 1.06rem;
}

.copyright-card p {
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.65;
}

.result-box p {
  margin: 10px 0 8px;
  color: var(--muted);
  line-height: 1.65;
  word-break: break-word;
}

.result-box.is-error {
  border-color: rgba(185, 28, 28, 0.28);
  background: rgba(254, 242, 242, 0.82);
}

.result-box.is-error h3,
.result-box.is-error p {
  color: var(--danger);
}

.result-box.is-success {
  border-color: rgba(15, 118, 110, 0.22);
  background: rgba(240, 253, 250, 0.78);
}

.result-box.is-success h3 {
  color: var(--accent);
}

.result-box.is-success p {
  color: #166534;
}

#resultLink {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
}

#resultLink::after {
  content: "↗";
}

.is-busy {
  opacity: 0.72;
  pointer-events: none;
}

.bridge-frame {
  position: absolute;
  width: 1px;
  height: 1px;
  border: 0;
  opacity: 0;
  pointer-events: none;
}

.exit-screen {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  color: var(--muted);
  position: relative;
  z-index: 3;
}

@media (max-width: 900px) {
  .content-grid {
    grid-template-columns: 1fr;
  }

  .page-shell::before {
    top: 110px;
    right: -150px;
    width: 390px;
    opacity: 0.055;
  }

  .page-shell::after {
    display: none;
  }
}

@media (max-width: 680px) {
  body::after {
    background:
      linear-gradient(180deg, rgba(244, 248, 251, 0.7), rgba(244, 248, 251, 0.9)),
      url("assets/%E6%A0%A1%E5%9B%AD1.jpg") center top / cover no-repeat;
    opacity: 0.5;
  }

  .page-shell {
    width: min(100% - 20px, 1180px);
    padding-top: 16px;
  }

  .topbar {
    align-items: flex-start;
  }

  .brand {
    gap: 10px;
  }

  .brand-logo {
    height: 60px;
    max-width: 270px;
  }

  .hero {
    padding-top: 14px;
  }

  .hero h1 {
    font-size: 1.68rem;
  }

  .hero-pills {
    gap: 8px;
  }

  .hero-pills span {
    min-height: 38px;
    padding: 8px 11px;
  }

  .panel-head,
  .link-preview-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .upload-panel,
  .info-panel {
    padding: 16px;
  }

  .status-chip {
    white-space: normal;
  }

  .secondary-btn,
  .ghost-btn,
  .primary-link {
    flex: 1 1 150px;
  }

  .pc-upload-action,
  #driveLink {
    display: none !important;
  }
}

@media (hover: none) and (pointer: coarse) {
  .pc-upload-action,
  #driveLink {
    display: none !important;
  }
}