:root {
  --paper: #f8f5ed;
  --paper-bright: #fffefb;
  --paper-soft: #f2eee5;
  --ink: #1b2924;
  --ink-soft: #52605a;
  --pine: #356652;
  --pine-deep: #21483b;
  --pine-soft: #e5efe9;
  --cinnabar: #9c4637;
  --gold: #8d7044;
  --line: rgba(45, 59, 51, 0.18);
  --line-strong: rgba(45, 59, 51, 0.32);
  --shadow-soft: 0 18px 48px rgba(45, 51, 46, 0.08);
  --shadow-card: 0 14px 34px rgba(45, 51, 46, 0.07);
  --radius-large: 22px;
  --radius-medium: 14px;
  --content: min(1180px, calc(100% - 48px));
  color-scheme: light;
}

.page-blending {
  background:
    linear-gradient(90deg, rgba(45, 78, 64, 0.035) 1px, transparent 1px) 0 0 / 52px 52px,
    linear-gradient(rgba(45, 78, 64, 0.028) 1px, transparent 1px) 0 0 / 52px 52px,
    var(--paper, #f7f3e9);
}

.tool-shell {
  width: min(960px, calc(100% - 36px));
  margin: 0 auto;
  padding: 34px 0 72px;
}

.tool-back-link,
.text-action {
  color: var(--pine, #24483c);
  text-decoration: none;
}

.tool-back-link {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.tool-intro {
  padding: 54px 0 32px;
  max-width: 780px;
}

.tool-intro h1 {
  margin: 12px 0 16px;
  font-family: var(--font-serif, "Noto Serif SC", serif);
  font-size: clamp(2.35rem, 6vw, 4.4rem);
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 1.14;
  color: #16362d;
}

.tool-intro p {
  max-width: 680px;
  font-size: 1.08rem;
  line-height: 1.9;
  color: #53655e;
}

.tool-card,
.return-reason-card {
  margin-top: 22px;
  padding: clamp(24px, 5vw, 46px);
  border: 1px solid rgba(46, 74, 63, 0.2);
  border-radius: 8px;
  background: rgba(255, 253, 248, 0.94);
  box-shadow: 0 20px 55px rgba(35, 58, 50, 0.08);
}

.tool-card[hidden] {
  display: none;
}

.tool-card__heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 24px;
}

.tool-card h2,
.return-reason-card h2 {
  margin: 7px 0 0;
  font-family: var(--font-serif, "Noto Serif SC", serif);
  color: #18392f;
  font-size: clamp(1.65rem, 4vw, 2.35rem);
  font-weight: 500;
  line-height: 1.35;
}

.tool-card h3 {
  color: #23493d;
  font-size: 1.05rem;
}

.task-cost-note,
.result-state {
  flex: 0 0 auto;
  padding: 7px 11px;
  border-radius: 999px;
  background: #edf3ee;
  color: #355e4f;
  font-size: 0.82rem;
}

.result-state.is-stop {
  background: #f6e7df;
  color: #954737;
}

.field-label {
  display: block;
  margin: 18px 0 9px;
  color: #294c40;
  font-weight: 700;
}

.page-blending textarea,
.page-blending input[type="search"] {
  width: 100%;
  box-sizing: border-box;
  border: 1px solid rgba(39, 70, 59, 0.28);
  border-radius: 6px;
  background: #fffdf8;
  color: #213d34;
  font: inherit;
}

.page-blending textarea {
  min-height: 132px;
  padding: 18px;
  line-height: 1.75;
  resize: vertical;
}

.page-blending input[type="search"] {
  padding: 12px 14px;
}

.page-blending textarea:focus,
.page-blending input:focus {
  outline: 3px solid rgba(180, 78, 56, 0.16);
  border-color: #a95643;
}

.personal-material-picker {
  margin-top: 18px;
  border-top: 1px solid rgba(39, 70, 59, 0.15);
  border-bottom: 1px solid rgba(39, 70, 59, 0.15);
}

.personal-material-picker summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 17px 0;
  cursor: pointer;
  color: #24483c;
  font-weight: 700;
}

.personal-material-picker summary small {
  color: #6b7a74;
  font-weight: 400;
}

.personal-material-picker__body {
  padding: 0 0 20px;
}

.personal-material-tools,
.tool-action-row,
.tool-submit-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.personal-material-tools {
  margin: 12px 0;
}

.personal-material-tools button,
.choice-grid button {
  min-height: 44px;
  padding: 10px 14px;
  border: 1px solid rgba(39, 70, 59, 0.24);
  border-radius: 5px;
  background: #fffdf8;
  color: #294c40;
  cursor: pointer;
  font: inherit;
}

.personal-material-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.personal-material-option {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px;
  border: 1px solid rgba(39, 70, 59, 0.18);
  border-radius: 5px;
  background: #fbfaf5;
}

.personal-material-option span,
.personal-material-option small {
  display: block;
}

.tool-submit-row {
  justify-content: space-between;
  margin-top: 24px;
}

.tool-status {
  color: #66756f;
  line-height: 1.65;
}

.tool-status.success,
.success-copy {
  color: #2e6651;
}

.tool-status.error,
.tool-status.warning {
  color: #9b4938;
}

.choice-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 24px 0;
}

.choice-grid button {
  min-height: 78px;
  font-weight: 700;
}

.material-review-list,
.material-decision-grid,
.formula-check-grid,
.process-observation-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 20px 0;
}

.material-review-item,
.material-decision-grid > div,
.formula-check-grid > div,
.process-observation-grid > div,
.process-observation-grid > section,
.missing-box,
.result-summary {
  padding: 18px;
  border: 1px solid rgba(39, 70, 59, 0.16);
  background: #faf8f1;
}

.material-review-item > div {
  display: flex;
  justify-content: space-between;
  gap: 10px;
}

.material-review-item span {
  color: #78837e;
  font-size: 0.82rem;
}

.material-review-item.is-unknown {
  border-color: rgba(169, 86, 67, 0.4);
  background: #fcf3ee;
}

.unknown-material-question {
  margin: 18px 0;
  padding: 18px;
  border-left: 3px solid #a95643;
  background: #f9f1e8;
}

.formula-sheet {
  margin: 24px 0;
  padding: clamp(20px, 4vw, 30px);
  background: #eaf0ec;
  border-left: 3px solid #315b4c;
}

.formula-sheet ul,
.decision-list {
  margin: 14px 0;
  padding: 0;
  list-style: none;
}

.formula-sheet li {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(39, 70, 59, 0.14);
}

.formula-sheet li b {
  display: inline-grid;
  width: 28px;
  height: 28px;
  margin-right: 10px;
  place-items: center;
  border: 1px solid rgba(39, 70, 59, 0.3);
  color: #315b4c;
  font-size: 0.8rem;
}

.formula-sheet .binder-line {
  color: #8e4a3c;
}

.decision-list li {
  display: grid;
  gap: 4px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(39, 70, 59, 0.12);
}

.decision-list .is-stop {
  color: #994635;
}

.version-line {
  padding: 12px 0;
  color: #6e7a75;
  font-size: 0.88rem;
}

.source-snapshot {
  margin: 18px 0;
}

.source-snapshot pre {
  white-space: pre-wrap;
  padding: 18px;
  background: #f4f0e7;
  border: 1px solid rgba(39, 70, 59, 0.16);
  font: inherit;
  line-height: 1.7;
}

.result-feedback,
.manual-handoff {
  margin-top: 30px;
  padding: 24px;
  border: 1px solid rgba(165, 77, 57, 0.3);
  background: #fbf4eb;
}

.return-reason-card {
  margin-top: 40px;
  color: #f6f0e4;
  background: #23483c;
}

.return-reason-card h2,
.return-reason-card .section-kicker {
  color: #fffaf0;
}

.return-reason-card p {
  max-width: 760px;
  line-height: 1.8;
  color: #dbe6df;
}

.return-reason-card .button.secondary {
  background: #fffaf0;
  color: #24483c;
}

@media (max-width: 720px) {
  .tool-shell {
    width: min(100% - 24px, 960px);
    padding-top: 22px;
  }

  .tool-intro {
    padding: 38px 4px 20px;
  }

  .tool-card,
  .return-reason-card {
    padding: 22px 18px;
  }

  .tool-card__heading,
  .tool-submit-row,
  .personal-material-picker summary {
    align-items: flex-start;
    flex-direction: column;
  }

  .choice-grid,
  .personal-material-grid,
  .material-review-list,
  .material-decision-grid,
  .formula-check-grid,
  .process-observation-grid {
    grid-template-columns: 1fr;
  }

  .tool-submit-row .button,
  .tool-action-row .button,
  .tool-action-row a.button {
    width: 100%;
    justify-content: center;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(90deg, transparent 0, transparent calc(50% - 590px), rgba(91, 79, 55, 0.035) calc(50% - 590px), transparent calc(50% - 589px), transparent calc(50% + 589px), rgba(91, 79, 55, 0.035) calc(50% + 590px), transparent calc(50% + 591px)),
    radial-gradient(circle at 78% 8%, rgba(255, 255, 255, 0.92), transparent 26rem),
    var(--paper);
  font-family: "Noto Sans SC", "Microsoft YaHei", "PingFang SC", sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
button, input, textarea, select { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid rgba(167, 70, 54, 0.32); outline-offset: 3px; }
.visually-hidden { position: absolute !important; width: 1px !important; height: 1px !important; padding: 0 !important; margin: -1px !important; overflow: hidden !important; clip: rect(0, 0, 0, 0) !important; white-space: nowrap !important; border: 0 !important; }

.site-header { position: sticky; top: 0; z-index: 60; display: block; padding: 0; border-bottom: 1px solid rgba(45, 59, 51, 0.12); background: rgba(255, 254, 251, 0.96); box-shadow: 0 8px 30px rgba(53, 57, 52, 0.035); backdrop-filter: blur(18px); }
.site-header__inner { position: relative; width: var(--content); min-height: 76px; margin: 0 auto; display: flex; align-items: center; gap: clamp(18px, 2.2vw, 30px); }
.brand { flex: 0 0 auto; display: inline-flex; align-items: center; gap: 12px; min-width: 0; text-decoration: none; }
.brand-mark { width: 42px; height: 48px; display: grid; place-items: center; color: #fffefb; background: var(--pine-deep); border-radius: 2px; font: 400 25px/1 "STSong", "Songti SC", serif; box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.18); }
.brand-copy { display: grid; gap: 1px; }
.brand strong { font: 400 21px/1.25 "STSong", "Songti SC", serif; letter-spacing: 0.05em; }
.brand small { color: var(--ink-soft); font-size: 11px; letter-spacing: 0.12em; }
.main-nav { flex: 1 1 auto; display: flex; flex-wrap: nowrap; justify-content: center; align-items: center; gap: clamp(16px, 2vw, 28px); }
.main-nav a { position: relative; min-height: 44px; padding: 17px 0 13px; display: inline-flex; align-items: center; color: #344039; font-size: 14px; text-decoration: none; white-space: nowrap; }
.main-nav a::after { content: ""; position: absolute; right: 0; bottom: -1px; left: 0; height: 2px; background: var(--cinnabar); transform: scaleX(0); transition: transform 180ms ease; }
.main-nav a:hover::after, .main-nav a[aria-current="page"]::after { transform: scaleX(1); }
.header-actions { flex: 0 0 auto; display: flex; align-items: center; gap: 8px; }
.header-handbook, .header-account { min-height: 44px; padding: 0 14px; display: inline-flex; align-items: center; justify-content: center; border: 1px solid var(--line); border-radius: 8px; color: var(--pine-deep); background: var(--paper-bright); font-size: 14px; line-height: 1; text-decoration: none; white-space: nowrap; }
.header-handbook > [aria-hidden="true"], .header-account > [aria-hidden="true"] { display: none; }
.header-account { max-width: 9.5em; }
.header-account [data-account-label] { position: static !important; width: auto !important; height: auto !important; margin: 0 !important; padding: 0 !important; overflow: hidden !important; clip: auto !important; border: 0 !important; text-overflow: ellipsis; white-space: nowrap !important; }
.header-handbook:hover, .header-account:hover { border-color: var(--pine); color: var(--pine); }
.nav-toggle { flex: 0 0 auto; display: none; width: 44px; height: 44px; padding: 10px; border: 1px solid transparent; border-radius: 8px; color: var(--pine-deep); background: transparent; cursor: pointer; }
.nav-toggle:hover { border-color: var(--line); background: var(--paper-bright); }
.nav-toggle > span:not(.visually-hidden) { display: block; height: 2px; margin: 5px 0; background: currentColor; transition: transform 180ms ease, opacity 180ms ease; }

.button { min-height: 46px; display: inline-flex; align-items: center; justify-content: center; gap: 14px; padding: 0 19px; border: 1px solid transparent; border-radius: 7px; font-weight: 700; text-decoration: none; cursor: pointer; transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease, background 180ms ease; }
.button:hover { transform: translateY(-1px); }
.button.primary { color: #fffdf8; background: var(--pine-deep); box-shadow: 0 10px 20px rgba(21, 55, 45, 0.16); }
.button.primary:hover { background: var(--pine); box-shadow: 0 14px 24px rgba(21, 55, 45, 0.2); }
.button.secondary { color: var(--pine-deep); border-color: var(--line-strong); background: var(--paper-bright); }
.button.text-button { padding-inline: 4px; color: var(--pine-deep); background: transparent; }

.home-start { margin-top: 24px; display: grid; grid-template-columns: minmax(300px, 0.78fr) minmax(0, 1.48fr); gap: 20px; align-items: stretch; }
.home-hero { position: relative; min-height: 592px; overflow: hidden; border: 1px solid rgba(69, 71, 61, 0.16); border-radius: var(--radius-large); background: var(--paper-bright); box-shadow: var(--shadow-soft); }
.home-hero__image, .home-hero__veil { position: absolute; inset: 0; width: 100%; height: 100%; }
.home-hero__image { object-fit: cover; object-position: 66% center; }
.home-hero__veil { background: linear-gradient(180deg, rgba(255, 254, 251, 0.99) 0%, rgba(255, 254, 251, 0.96) 43%, rgba(255, 254, 251, 0.72) 66%, rgba(255, 254, 251, 0.08) 100%); }
.home-hero__content { position: relative; z-index: 1; width: 100%; min-height: 592px; padding: 46px 34px 260px; display: flex; flex-direction: column; justify-content: flex-start; align-items: flex-start; }
.section-kicker { display: block; margin-bottom: 12px; color: var(--cinnabar); font-size: 12px; font-weight: 800; letter-spacing: 0.18em; }
.home-hero h1, .home-section h2, .task-card h3, .learning-card h3 { font-family: "STSong", "Songti SC", "Noto Serif SC", serif; font-weight: 400; }
.home-hero h1 { max-width: 7em; margin: 0; font-size: clamp(44px, 4.5vw, 58px); line-height: 1.16; letter-spacing: -0.045em; }
.home-hero__content > p { max-width: 20em; margin: 22px 0 0; color: #45534d; font-size: 16px; }

.home-section { width: var(--content); margin: 96px auto 0; }
.home-section.home-start { margin-top: 24px; }
.section-heading { max-width: 720px; margin-bottom: 30px; }
.home-task-panel { min-width: 0; padding: 32px; border: 1px solid rgba(69, 71, 61, 0.16); border-radius: var(--radius-large); background: linear-gradient(145deg, rgba(255, 254, 251, 0.98), rgba(250, 247, 239, 0.94)); box-shadow: var(--shadow-soft); }
.home-task-panel .section-heading { margin-bottom: 22px; }
.section-heading--split { max-width: none; display: grid; grid-template-columns: minmax(0, 1fr) minmax(210px, 0.75fr); align-items: end; gap: 24px; }
.section-heading h2 { margin: 0; font-size: clamp(30px, 3.4vw, 46px); line-height: 1.25; }
.section-heading > p { max-width: 29em; margin: 0 0 5px; color: var(--ink-soft); }
.primary-task-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.task-card { min-height: 238px; padding: 26px; display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: var(--radius-medium); color: var(--ink); background: var(--paper-bright); box-shadow: 0 10px 24px rgba(45, 51, 46, 0.055); text-decoration: none; transition: transform 200ms ease, box-shadow 200ms ease, border-color 200ms ease, background 200ms ease; }
.task-card:hover { transform: translateY(-4px); border-color: rgba(31, 73, 59, 0.38); box-shadow: 0 24px 50px rgba(45, 51, 46, 0.11); }
.task-card--diagnosis { border-top: 3px solid var(--cinnabar); background: linear-gradient(150deg, var(--paper-bright), #fffaf4); }
.task-card--blending { border-top: 3px solid var(--pine); background: linear-gradient(150deg, var(--paper-bright), #eef5f0); }
.task-card__eyebrow, .learning-card__label { color: var(--cinnabar); font-size: 12px; font-weight: 800; letter-spacing: 0.12em; }
.task-card--blending .task-card__eyebrow { color: var(--pine); }
.task-card h3 { margin: 8px 0 10px; font-size: clamp(24px, 2.15vw, 30px); line-height: 1.3; }
.task-card p { max-width: 35em; margin: 0; color: var(--ink-soft); font-size: 14px; line-height: 1.75; }
.task-card__action { min-height: 44px; margin-top: auto; padding-top: 20px; display: inline-flex; gap: 10px; align-items: center; color: var(--pine-deep); font-weight: 800; }

.secondary-task-group { margin-top: 22px; padding-top: 20px; border-top: 1px solid var(--line); }
.secondary-task-group > h3 { margin: 0 0 12px; color: var(--ink-soft); font-size: 13px; font-weight: 700; }
.learning-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; border: 0; }
.learning-card { min-height: 154px; padding: 19px 20px; display: flex; flex-direction: column; align-items: flex-start; gap: 0; border: 1px solid var(--line); border-radius: 10px; background: rgba(255, 254, 251, 0.72); text-decoration: none; transition: border-color 180ms ease, background 180ms ease, transform 180ms ease; }
.learning-card:last-child { border-right: 1px solid var(--line); }
.learning-card:hover { transform: translateY(-2px); border-color: rgba(53, 102, 82, 0.45); background: var(--paper-bright); }
.learning-card__label { color: var(--pine); }
.learning-card h3 { margin: 5px 0 5px; font-size: 20px; line-height: 1.4; }
.learning-card p { margin: 0; color: var(--ink-soft); font-size: 13px; line-height: 1.65; }
.learning-card__action { min-height: 44px; margin-top: auto; padding-top: 12px; display: inline-flex; align-items: center; gap: 8px; color: var(--pine-deep); font-size: 13px; font-weight: 800; }

.home-continue { margin-top: 58px; }
.continue-card { padding: 42px 46px; display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 42px; border: 1px solid rgba(141, 112, 68, 0.32); border-radius: var(--radius-medium); background: linear-gradient(110deg, rgba(255, 254, 251, 0.98), rgba(248, 243, 231, 0.9)); box-shadow: var(--shadow-card); }
.continue-card h2 { margin: 0; font-size: clamp(30px, 3.2vw, 42px); }
.continue-card p { max-width: 46em; margin: 12px 0 0; color: var(--ink-soft); }
.continue-card__actions { display: flex; flex-direction: column; gap: 10px; }

.home-published-learning { margin-top: 58px; }
.home-published-learning .section-heading { margin-bottom: 22px; }
.home-learning-state { min-height: 72px; padding: 18px 20px; display: flex; align-items: center; justify-content: space-between; gap: 18px; border: 1px solid var(--line); border-radius: 10px; background: rgba(255, 254, 251, 0.78); }
.home-learning-state[data-state="ready"] { min-height: 0; padding: 0; border: 0; background: transparent; }
.home-learning-state[data-state="ready"] p { position: absolute; width: 1px; height: 1px; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; }
.home-learning-state[data-state="empty"] { border-style: dashed; }
.home-learning-state[data-state="error"] { border-color: rgba(156, 70, 55, 0.36); background: #fff9f5; }
.home-learning-state p { margin: 0; color: var(--ink-soft); }
.published-learning-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.published-learning-group { min-width: 0; padding: 24px; border: 1px solid var(--line); border-radius: var(--radius-medium); background: var(--paper-bright); box-shadow: var(--shadow-card); }
.published-learning-group__heading { min-height: 44px; margin-bottom: 12px; display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.published-learning-group__heading h3 { margin: 0; font: 400 25px/1.35 "STSong", "Songti SC", serif; }
.published-learning-group__heading a { min-height: 44px; display: inline-flex; align-items: center; color: var(--pine-deep); font-size: 13px; font-weight: 700; text-decoration: none; }
.published-learning-list { display: grid; gap: 8px; }
.published-learning-item { min-height: 92px; padding: 14px 15px; display: grid; align-content: center; gap: 2px; border: 1px solid rgba(45, 59, 51, 0.14); border-radius: 8px; background: #fbfaf5; text-decoration: none; transition: border-color 180ms ease, background 180ms ease; }
.published-learning-item:hover { border-color: rgba(53, 102, 82, 0.42); background: #f4f8f4; }
.published-learning-item span { color: var(--cinnabar); font-size: 11px; font-weight: 800; letter-spacing: 0.08em; }
.published-learning-item strong { overflow: hidden; color: var(--ink); font: 400 19px/1.4 "STSong", "Songti SC", serif; text-overflow: ellipsis; white-space: nowrap; }
.published-learning-item small { overflow: hidden; color: var(--ink-soft); font-size: 12px; text-overflow: ellipsis; white-space: nowrap; }
.published-learning-empty { min-height: 92px; margin: 0; padding: 16px; display: flex; align-items: center; border: 1px dashed var(--line-strong); border-radius: 8px; color: var(--ink-soft); background: #fbfaf5; }

.forum-compose-actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.forum-compose-actions .button { min-height: 44px; }

.home-service { margin-top: 58px; margin-bottom: 96px; padding: 38px 44px; display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 42px; border: 1px solid rgba(53, 102, 82, 0.25); border-left: 4px solid var(--pine); border-radius: var(--radius-medium); color: var(--ink); background: linear-gradient(120deg, rgba(229, 239, 233, 0.74), rgba(255, 254, 251, 0.96)); box-shadow: var(--shadow-card); }
.home-service h2 { margin: 0; font-size: clamp(28px, 3vw, 40px); }
.home-service p { max-width: 48em; margin: 14px 0 0; color: var(--ink-soft); }
.service-contact { margin: 0; display: flex; align-items: center; gap: 14px; }
.service-contact img { width: 76px; height: 76px; object-fit: cover; border: 6px solid #fff; box-shadow: 0 5px 18px rgba(45, 51, 46, 0.12); }
.service-contact figcaption { display: grid; min-width: 11em; }
.service-contact span { color: var(--ink-soft); font-size: 12px; }

.site-footer { min-height: 92px; padding: 24px max(24px, calc((100% - 1180px) / 2)); display: flex; align-items: center; justify-content: space-between; gap: 24px; border-top: 1px solid var(--line); background: rgba(255, 253, 248, 0.72); }
.site-footer > span { display: flex; gap: 12px; align-items: baseline; font-family: "STSong", "Songti SC", serif; }
.site-footer small { color: var(--ink-soft); }
.site-footer nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 20px; }
.site-footer a { color: var(--ink-soft); font-size: 13px; text-decoration: none; }
.site-footer a:hover { color: var(--cinnabar); }

.community-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(300px, 380px); gap: 22px; align-items: start; }
#community-browse, #community-compose { border: 1px solid var(--line); border-radius: var(--radius-medium); background: var(--paper-bright); box-shadow: var(--shadow-card); }
#community-browse { padding: 28px; }
#community-compose { position: sticky; top: 96px; overflow: clip; }
#community-compose > summary { padding: 24px 26px; display: grid; cursor: pointer; list-style: none; background: linear-gradient(135deg, rgba(223, 234, 228, 0.72), rgba(255, 253, 248, 0.96)); }
#community-compose > summary::-webkit-details-marker { display: none; }
#community-compose > summary span { color: var(--cinnabar); font-size: 12px; font-weight: 800; letter-spacing: 0.12em; }
#community-compose > summary strong { margin-top: 3px; font: 400 24px/1.4 "STSong", "Songti SC", serif; }
#community-compose > summary small { margin-top: 4px; color: var(--ink-soft); }
#community-compose[open] > summary { border-bottom: 1px solid var(--line); }
#community-compose #forum-account-state, #community-compose #post-form, #community-compose #forum-feedback { margin: 22px 24px; }
.forum-search-row { display: grid; grid-template-columns: auto minmax(180px, 1fr); gap: 18px; align-items: center; margin-bottom: 18px; }
.forum-search-row label { font-weight: 800; }
.forum-search-row input { min-height: 46px; width: 100%; padding: 0 14px; border: 1px solid var(--line-strong); border-radius: 7px; background: #fff; }
.forum-search-status { min-height: 1.7em; margin: 12px 0; color: var(--ink-soft); font-size: 13px; }
.post-preview { padding: 20px; border: 1px solid rgba(166, 135, 84, 0.34); border-radius: 9px; background: var(--paper); }
.post-preview h3 { margin: 4px 0 8px; font: 400 22px/1.45 "STSong", "Songti SC", serif; }
.post-preview p { margin: 0 0 8px; white-space: pre-wrap; }
.post-preview small { color: var(--ink-soft); }

.community-hero {
  position: relative;
  margin-top: 26px;
  padding: clamp(46px, 6vw, 72px);
  overflow: hidden;
  align-items: end;
  border: 1px solid rgba(166, 135, 84, 0.3);
  border-radius: var(--radius-large);
  color: var(--pine-deep);
  background:
    radial-gradient(circle at 76% 16%, rgba(255, 255, 255, 0.88), transparent 26%),
    linear-gradient(120deg, rgba(255, 253, 248, 0.98), rgba(224, 235, 228, 0.88));
  box-shadow: var(--shadow-soft);
}
.community-hero::after {
  content: "";
  position: absolute;
  right: -90px;
  bottom: -150px;
  width: 420px;
  height: 420px;
  border: 1px solid rgba(45, 91, 70, 0.12);
  border-radius: 50%;
  box-shadow: 0 0 0 58px rgba(45, 91, 70, 0.04), 0 0 0 116px rgba(45, 91, 70, 0.025);
  pointer-events: none;
}
.community-hero h1,
.community-hero .lead,
.community-hero .subpage-hero-copy p:not(.lead) { color: var(--pine-deep); }
.community-hero .eyebrow { color: var(--cinnabar); }
.community-hero .subpage-note { position: relative; z-index: 1; background: rgba(255, 253, 248, 0.86); }

@media (max-width: 1080px) {
  .site-header__inner { min-height: 70px; gap: 10px; }
  .brand-mark { width: 40px; height: 46px; }
  .main-nav { position: absolute; top: calc(100% + 1px); right: 0; left: 0; padding: 10px; display: none; flex-direction: column; align-items: stretch; gap: 0; border: 1px solid var(--line); border-radius: 0 0 12px 12px; background: var(--paper-bright); box-shadow: var(--shadow-soft); }
  .main-nav[data-open="true"] { display: flex; }
  .main-nav a { padding: 13px 14px; border-bottom: 1px solid rgba(45, 59, 51, 0.09); }
  .main-nav a:last-child { border-bottom: 0; }
  .main-nav a::after { display: none; }
  .nav-toggle { display: block; order: 4; }
  .nav-toggle[aria-expanded="true"] > span:nth-of-type(2) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] > span:nth-of-type(3) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] > span:nth-of-type(4) { transform: translateY(-7px) rotate(-45deg); }
  .header-actions { margin-left: auto; }
}

@media (max-width: 900px) {
  :root { --content: min(calc(100% - 32px), 720px); }
  .home-start { grid-template-columns: 1fr; }
  .home-hero { min-height: 220px; }
  .home-hero__image { object-position: 72% center; }
  .home-hero__veil { background: linear-gradient(90deg, rgba(255, 254, 251, 0.99) 0%, rgba(255, 254, 251, 0.94) 55%, rgba(255, 254, 251, 0.28) 100%); }
  .home-hero__content { width: 62%; min-height: 220px; padding: 26px 30px; justify-content: center; }
  .home-hero h1 { font-size: 38px; }
  .section-heading--split, .continue-card, .home-service { grid-template-columns: 1fr; align-items: start; }
  .section-heading--split { gap: 10px; }
  .community-layout { grid-template-columns: 1fr; }
  #community-compose { position: static; }
  .continue-card__actions { flex-direction: row; flex-wrap: wrap; }
}

@media (max-width: 620px) {
  :root { --content: calc(100% - 24px); }
  .site-header__inner { width: calc(100% - 20px); min-height: 64px; gap: 7px; }
  .brand { gap: 8px; }
  .brand-mark { width: 36px; height: 42px; font-size: 22px; }
  .brand-copy small { display: none; }
  .brand strong { font-size: 17px; }
  .header-actions { gap: 6px; }
  .header-handbook, .header-account { min-height: 44px; padding-inline: 10px; font-size: 13px; }
  .header-account { max-width: 6em; }
  .header-account[data-auth-state="authenticated"] [data-account-label] { font-size: 0; }
  .header-account[data-auth-state="authenticated"] [data-account-label]::after { content: "我的账号"; font-size: 13px; }
  .nav-toggle { width: 42px; height: 44px; padding-inline: 9px; }
  .account-breadcrumb a,
  .account-text-link { min-height: 44px; display: inline-flex; align-items: center; }
  .home-section.home-start { margin-top: 12px; gap: 12px; }
  .home-hero { min-height: 0; border-radius: 14px; }
  .home-hero__image { height: 100%; object-position: 70% center; }
  .home-hero__veil { background: linear-gradient(90deg, rgba(255, 254, 251, 0.99), rgba(255, 254, 251, 0.92) 60%, rgba(255, 254, 251, 0.5)); }
  .home-hero__content { width: 100%; min-height: 0; padding: 20px; }
  .home-hero h1 { max-width: none; font-size: 32px; }
  .home-hero__content > p { margin-top: 10px; font-size: 14px; }
  .home-task-panel { padding: 18px 14px; border-radius: 14px; }
  .home-task-panel .section-heading { margin-bottom: 16px; }
  .home-task-panel .section-heading h2 { font-size: 27px; }
  .home-task-panel .section-heading > p { display: none; }
  .home-section { margin-top: 64px; }
  .home-start { margin-top: 12px; }
  .section-heading h2, .continue-card h2, .home-service h2 { font-size: 30px; }
  .primary-task-grid, .learning-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .published-learning-grid { grid-template-columns: 1fr; }
  .task-card { min-height: 0; padding: 16px 12px; }
  .task-card h3 { font-size: 22px; }
  .task-card p, .learning-card p { display: none; }
  .task-card__action { padding-top: 8px; font-size: 14px; }
  .secondary-task-group { margin-top: 16px; padding-top: 14px; }
  .learning-card { min-height: 0; padding: 14px 12px; }
  .learning-card h3 { font-size: 18px; }
  .learning-card__action { padding-top: 6px; }
  .continue-card, .home-service { padding: 34px 26px; }
  .published-learning-group { padding: 20px; }
  .home-learning-state { align-items: stretch; flex-direction: column; }
  .home-learning-state .button { width: 100%; }
  .continue-card__actions .button { width: 100%; }
  .home-service { margin-bottom: 64px; }
  .service-contact { width: 100%; padding-top: 18px; border-top: 1px solid var(--line); }
  .site-footer { padding: 28px 18px; align-items: flex-start; flex-direction: column; }
  .site-footer nav { justify-content: flex-start; }
  #community-browse { padding: 20px 16px; }
  .forum-search-row { grid-template-columns: 1fr; gap: 8px; }
  .community-hero { margin-top: 14px; padding: 38px 24px 28px; }
  .community-hero::after { right: -180px; bottom: -210px; }
}

@media (max-width: 390px) {
  .site-header__inner { width: calc(100% - 16px); gap: 5px; }
  .brand-mark { width: 34px; }
  .brand strong { font-size: 16px; }
  .header-handbook, .header-account { padding-inline: 8px; }
  .header-account { max-width: 5.5em; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; }
}