:root {
  color-scheme: light;
  --ink: #17323b;
  --muted: #6b7f84;
  --line: #dce9e7;
  --paper: #f7fbfa;
  --card: rgba(255, 255, 255, 0.92);
  --teal: #087f78;
  --teal-dark: #05645f;
  --teal-soft: #e2f4f0;
  --gold: #d6953b;
  --danger: #a85e5e;
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { min-width: 320px; background: var(--paper); }
body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  color: var(--ink);
  background:
    radial-gradient(circle at 90% 0%, rgba(219, 243, 237, 0.78), transparent 31rem),
    linear-gradient(145deg, #fbfdfc 0%, #f3f9f7 100%);
}
button, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
.page-shell { width: min(calc(100% - 40px), 920px); margin: 0 auto; padding: 68px 0 44px; }
.brand-logo { display: inline-flex; align-items: center; margin-bottom: 28px; line-height: 0; text-decoration: none; }
.brand-logo img { display: block; width: min(170px, 44vw); height: auto; }
.brand-logo:focus-visible { outline: 3px solid rgba(8, 127, 120, 0.28); outline-offset: 5px; border-radius: 4px; }
.hero { position: relative; display: flex; justify-content: space-between; gap: 32px; align-items: flex-start; margin-bottom: 32px; }
.hero-copy { min-width: 0; max-width: 650px; }
.eyebrow { margin: 0 0 15px; color: var(--teal); font-size: 12px; font-weight: 800; letter-spacing: 0.2em; }
h1, h2, p { margin-top: 0; }
h1 { margin-bottom: 14px; font-size: clamp(32px, 5vw, 54px); line-height: 1.12; letter-spacing: -0.045em; }
.hero-description { max-width: 570px; margin-bottom: 0; color: var(--muted); font-size: 16px; line-height: 1.8; }
.hero-mark { position: relative; flex: 0 0 86px; width: 86px; height: 86px; border: 1px solid rgba(8, 127, 120, 0.23); border-radius: 50%; transform: rotate(-20deg); }
.hero-mark::before, .hero-mark::after { position: absolute; content: ""; border-radius: 999px; background: var(--teal); }
.hero-mark::before { top: 18px; left: 18px; width: 17px; height: 17px; background: var(--gold); }
.hero-mark::after { right: 13px; bottom: 15px; width: 8px; height: 8px; }
.hero-mark-line { position: absolute; right: 20px; top: 28px; width: 30px; height: 2px; background: var(--teal); box-shadow: -9px 8px 0 var(--teal), -18px 16px 0 var(--teal); }
.batch-panel { margin-bottom: 18px; padding: 24px 25px 22px; border: 1px solid #dce9e7; border-radius: 20px; background: rgba(255, 255, 255, 0.78); box-shadow: 0 10px 28px rgba(24, 63, 67, 0.035); }
.section-heading, .list-heading { display: flex; justify-content: space-between; gap: 20px; align-items: flex-start; }
.section-heading .eyebrow { margin-bottom: 8px; }
.section-heading h2, .list-heading h2 { margin-bottom: 0; font-size: 20px; line-height: 1.4; }
.limit-badge { flex: 0 0 auto; padding: 6px 10px; border-radius: 999px; color: var(--teal-dark); background: var(--teal-soft); font-size: 12px; }
.batch-description { margin: 12px 0 12px; color: var(--muted); font-size: 13px; line-height: 1.7; }
.batch-description code { padding: 2px 5px; border-radius: 5px; color: var(--teal-dark); background: #edf7f5; font-family: Consolas, monospace; }
#link-input { display: block; width: 100%; min-height: 94px; resize: vertical; padding: 12px 14px; border: 1px solid var(--line); border-radius: 12px; color: var(--ink); outline: none; background: #fbfdfc; font-size: 14px; line-height: 1.7; }
#admin-link-input { display: block; width: 100%; min-height: 126px; resize: vertical; padding: 12px 14px; border: 1px solid var(--line); border-radius: 12px; color: var(--ink); outline: none; background: #fbfdfc; font-size: 14px; line-height: 1.7; }
#admin-link-input:focus, #admin-password:focus { border-color: var(--teal); box-shadow: 0 0 0 3px rgba(8, 127, 120, 0.11); }
.admin-password-input { display: block; width: 100%; min-height: 44px; margin-top: 10px; padding: 0 14px; border: 1px solid var(--line); border-radius: 12px; color: var(--ink); outline: none; background: #fbfdfc; font-size: 14px; }
#link-input:focus { border-color: var(--teal); box-shadow: 0 0 0 3px rgba(8, 127, 120, 0.11); }
.batch-actions { display: flex; gap: 14px; align-items: center; margin-top: 12px; }
.generate-button { min-height: 42px; padding: 0 18px; border: 0; border-radius: 11px; color: white; background: var(--teal); cursor: pointer; font-size: 14px; font-weight: 700; transition: background 160ms ease, transform 160ms ease; }
.generate-button:hover { background: var(--teal-dark); transform: translateY(-1px); }
.generator-feedback { min-height: 20px; color: var(--muted); font-size: 13px; }
.generator-feedback.success { color: #26745e; }
.generator-feedback.error { color: var(--danger); }
.summary-panel { padding: 22px 25px 20px; border: 1px solid rgba(8, 127, 120, 0.12); border-radius: 20px; background: rgba(237, 249, 246, 0.76); box-shadow: 0 12px 30px rgba(18, 70, 66, 0.04); }
.summary-main, .summary-meta { display: flex; align-items: baseline; justify-content: space-between; gap: 20px; }
.summary-label, .summary-meta { color: var(--muted); font-size: 13px; }
.summary-main strong { color: var(--teal-dark); font-size: 16px; }
.progress-track { height: 8px; margin: 15px 0 12px; overflow: hidden; border-radius: 999px; background: #cfe7e2; }
.progress-bar { display: block; width: 0; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--teal), #44b39b); transition: width 240ms ease; }
.text-button { padding: 0; border: 0; color: var(--teal-dark); background: transparent; cursor: pointer; font-size: 13px; }
.text-button:hover { text-decoration: underline; }
.identity-panel { display: grid; grid-template-columns: minmax(0, 1fr) minmax(300px, 0.9fr); gap: 10px 24px; align-items: end; margin-top: 18px; padding: 22px 25px 20px; border: 1px solid #f1dfbc; border-radius: 20px; background: #fffaf0; }
.identity-panel .eyebrow { margin-bottom: 8px; color: #a46b22; }
.identity-panel h2 { margin-bottom: 5px; font-size: 20px; line-height: 1.4; }
.identity-description { margin-bottom: 0; color: var(--muted); font-size: 13px; line-height: 1.7; }
.identity-form { display: flex; gap: 9px; min-width: 0; }
.visitor-name-input { min-width: 0; flex: 1; min-height: 46px; padding: 0 14px; border: 1px solid #ead8b4; border-radius: 12px; color: var(--ink); outline: none; background: #fffdf8; }
.visitor-name-input:focus { border-color: var(--gold); box-shadow: 0 0 0 3px rgba(214, 149, 59, 0.13); }
.visitor-name-input:disabled { color: var(--muted); background: #f7f1e6; }
.save-name-button { flex: 0 0 auto; min-height: 46px; padding: 0 16px; border: 1px solid #d6a45d; border-radius: 12px; color: #835418; background: white; cursor: pointer; font-size: 14px; font-weight: 700; }
.save-name-button:hover { background: #fff3dc; }
.name-feedback { grid-column: 1 / -1; min-height: 20px; margin: 0; color: var(--muted); font-size: 13px; }
.name-feedback.success { color: #26745e; }
.name-feedback.error { color: var(--danger); }
.links-section { margin-top: 25px; }
.link-count-text { padding-top: 5px; color: var(--muted); font-size: 13px; }
.link-list { display: grid; gap: 18px; margin-top: 24px; }
.link-card { padding: 26px; border: 1px solid var(--line); border-radius: 22px; background: var(--card); box-shadow: 0 10px 28px rgba(24, 63, 67, 0.045); transition: border-color 180ms ease, transform 180ms ease, box-shadow 180ms ease; }
.link-card:hover { border-color: #b9d9d4; box-shadow: 0 14px 34px rgba(24, 63, 67, 0.08); transform: translateY(-2px); }
.link-card.is-signed { border-color: #9fd4c7; background: linear-gradient(145deg, #ffffff, #f2fbf8); }
.link-card.needs-attention { border-color: #d55252; box-shadow: 0 0 0 3px rgba(213, 82, 82, 0.12); }
.card-topline { display: flex; justify-content: space-between; gap: 16px; align-items: center; margin-bottom: 15px; }
.card-index { color: var(--gold); font-family: Georgia, serif; font-size: 18px; font-style: italic; }
.card-status { padding: 5px 10px; border-radius: 999px; color: var(--muted); background: #f0f5f4; font-size: 12px; }
.is-viewed .card-status { color: var(--teal-dark); background: var(--teal-soft); }
.is-signed .card-status { color: #216a58; background: #d8f1e7; }
.card-title { margin-bottom: 8px; font-size: 21px; line-height: 1.4; }
.card-description { margin-bottom: 14px; color: var(--muted); font-size: 14px; line-height: 1.7; }
.url-preview { overflow: hidden; color: #789095; font-size: 12px; line-height: 1.5; text-overflow: ellipsis; white-space: nowrap; }
.screenshot-upload { margin-top: 18px; padding: 14px; border: 1px dashed #c6ded9; border-radius: 14px; background: #f7fcfb; }
.screenshot-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.screenshot-label { color: var(--teal-dark); font-size: 13px; font-weight: 700; }
.screenshot-picker { position: relative; display: inline-flex; min-height: 34px; align-items: center; padding: 0 11px; border: 1px solid #b9d9d4; border-radius: 9px; color: var(--teal-dark); background: white; cursor: pointer; font-size: 12px; font-weight: 700; }
.screenshot-picker:hover { background: var(--teal-soft); }
.screenshot-picker:focus-within { outline: 3px solid rgba(8, 127, 120, 0.16); outline-offset: 2px; }
.screenshot-input { position: absolute; width: 1px; height: 1px; overflow: hidden; opacity: 0; }
.upload-help { margin: 8px 0 0; color: var(--muted); font-size: 12px; line-height: 1.6; }
.screenshot-preview { display: flex; gap: 10px; align-items: center; margin-top: 10px; }
.screenshot-preview-image { width: 58px; height: 58px; object-fit: cover; border: 1px solid var(--line); border-radius: 8px; background: white; }
.screenshot-file-name { overflow: hidden; color: var(--muted); font-size: 12px; text-overflow: ellipsis; white-space: nowrap; }
.card-actions { display: flex; gap: 12px; align-items: stretch; margin-top: 22px; }
.open-link-button, .name-input { min-height: 46px; border-radius: 12px; }
.open-link-button { display: inline-flex; flex: 0 0 auto; align-items: center; justify-content: center; gap: 10px; padding: 0 18px; color: white; background: var(--teal); font-size: 14px; font-weight: 700; text-decoration: none; transition: background 160ms ease, transform 160ms ease; }
.open-link-button:hover { background: var(--teal-dark); transform: translateY(-1px); }
.arrow { font-size: 17px; line-height: 1; }
.feedback { min-height: 20px; margin: 12px 0 0; color: var(--muted); font-size: 13px; }
.feedback.success { color: #26745e; }
.feedback.error { color: var(--danger); }
.needs-attention .card-status { color: #a52929; background: #fde4e4; }
.needs-attention .feedback { color: #b52f2f; font-weight: 700; }
.submit-panel { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; justify-content: center; margin-top: 24px; padding: 20px; border: 1px solid #cfe5e1; border-radius: 18px; background: rgba(237, 249, 246, 0.72); }
.submit-all-button { min-width: 160px; min-height: 48px; padding: 0 22px; border: 0; border-radius: 12px; color: white; background: var(--teal); cursor: pointer; font-size: 15px; font-weight: 800; transition: background 160ms ease, transform 160ms ease; }
.submit-all-button:hover:not(:disabled) { background: var(--teal-dark); transform: translateY(-1px); }
.submit-all-button:disabled { cursor: not-allowed; opacity: 0.68; }
.submit-feedback { flex: 1 1 260px; min-height: 20px; margin: 0; color: var(--muted); font-size: 13px; }
.submit-feedback.success { color: #26745e; }
.submit-feedback.error { color: #b52f2f; font-weight: 700; }
.tools-section { margin-top: 34px; }
.tools-section .eyebrow { margin-bottom: 8px; }
.tool-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin-top: 18px; }
.tool-card { display: flex; min-height: 180px; flex-direction: column; padding: 20px; border: 1px solid var(--line); border-radius: 18px; color: var(--ink); background: rgba(255, 255, 255, 0.75); text-decoration: none; box-shadow: 0 8px 22px rgba(24, 63, 67, 0.035); transition: border-color 180ms ease, background 180ms ease, box-shadow 180ms ease, transform 180ms ease; }
.tool-card:hover { border-color: #b9d9d4; background: white; box-shadow: 0 12px 28px rgba(24, 63, 67, 0.08); transform: translateY(-2px); }
.tool-card:focus-visible { outline: 3px solid rgba(8, 127, 120, 0.25); outline-offset: 3px; }
.tool-number { color: var(--gold); font-family: Georgia, serif; font-size: 16px; font-style: italic; }
.tool-title { margin-top: 22px; font-size: 17px; line-height: 1.45; }
.tool-description { margin-top: 6px; color: var(--muted); font-size: 13px; line-height: 1.65; }
.tool-link { display: inline-flex; gap: 7px; align-items: center; margin-top: auto; padding-top: 18px; color: var(--teal-dark); font-size: 13px; font-weight: 800; }
.page-footer { margin-top: 30px; padding: 0 4px; color: #829397; font-size: 12px; line-height: 1.8; }
.page-footer p { margin-bottom: 3px; }
.page-footer a, .back-link { color: var(--teal-dark); font-weight: 700; }
.admin-header { display: flex; justify-content: space-between; gap: 24px; align-items: flex-start; margin-bottom: 32px; }
.admin-header h1 { margin-bottom: 12px; font-size: clamp(30px, 5vw, 48px); }
.back-link { padding-top: 8px; text-decoration: none; white-space: nowrap; }
.admin-link-list, .record-list { display: grid; gap: 10px; margin-top: 18px; }
.admin-link-item, .record-item { display: flex; justify-content: space-between; gap: 18px; padding: 13px 14px; border: 1px solid var(--line); border-radius: 12px; background: rgba(255, 255, 255, 0.7); font-size: 13px; }
.admin-link-item span, .record-item span { overflow: hidden; color: var(--muted); text-overflow: ellipsis; white-space: nowrap; }
.record-item strong { color: var(--teal-dark); }
.admin-records-panel { margin-top: 18px; }
.record-actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.export-button { min-height: 34px; padding: 0 12px; border: 1px solid #b9d9d4; border-radius: 9px; color: var(--teal-dark); background: white; cursor: pointer; font-size: 12px; font-weight: 700; }
.export-button:hover:not(:disabled) { background: var(--teal-soft); }
.export-button:disabled { cursor: not-allowed; opacity: 0.62; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
@media (max-width: 680px) {
  .page-shell { width: min(calc(100% - 28px), 560px); padding-top: 40px; }
  .brand-logo { margin-bottom: 22px; }
  .brand-logo img { width: 140px; }
  .hero { gap: 14px; }
  .hero-mark { flex-basis: 56px; width: 56px; height: 56px; transform: scale(0.72) rotate(-20deg); transform-origin: top right; }
  h1 { font-size: clamp(31px, 9vw, 43px); }
  .hero-description { font-size: 14px; line-height: 1.7; }
  .admin-header { flex-direction: column; gap: 12px; }
  .back-link { padding-top: 0; }
  .batch-panel, .summary-panel, .link-card { padding: 20px; border-radius: 18px; }
  .identity-panel { grid-template-columns: 1fr; padding: 20px; border-radius: 18px; }
  .identity-form { width: 100%; }
  .batch-actions { align-items: flex-start; flex-direction: column; gap: 8px; }
  .generate-button { width: 100%; }
  .card-actions { display: grid; gap: 10px; }
  .open-link-button { width: 100%; min-height: 44px; }
  .submit-panel { align-items: stretch; flex-direction: column; }
  .submit-all-button { width: 100%; }
  .screenshot-row { align-items: flex-start; flex-direction: column; }
  .screenshot-picker { width: 100%; justify-content: center; }
  .tool-grid { grid-template-columns: 1fr; }
  .tool-card { min-height: 160px; }
  .admin-link-item, .record-item { align-items: flex-start; flex-direction: column; gap: 5px; }
  .admin-link-item span, .record-item span { max-width: 100%; }
  .record-actions { align-items: flex-start; flex-direction: column; }
}
@media (max-width: 390px) {
  .section-heading, .list-heading { gap: 10px; }
  .section-heading h2, .list-heading h2 { font-size: 18px; }
  .summary-meta { align-items: flex-start; flex-direction: column; gap: 6px; }
}