:root {
  --ink: #152623;
  --muted: #66736f;
  --paper: #f5f4ef;
  --card: rgba(255, 255, 252, 0.82);
  --line: rgba(21, 38, 35, 0.13);
  --jade: #1f6258;
  --jade-dark: #16463f;
  --amber: #d08a3c;
  --pale-jade: #dce8e3;
  --shadow: 0 26px 70px rgba(25, 48, 43, 0.11);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 10%, rgba(196, 220, 211, 0.58), transparent 30rem),
    linear-gradient(145deg, #f7f6f1, #efeee8 65%, #f8f6f0);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}

button, textarea, select { font: inherit; }
button { cursor: pointer; }
.hidden { display: none !important; }

.ambient {
  position: fixed;
  border: 1px solid rgba(31, 98, 88, 0.12);
  border-radius: 50%;
  pointer-events: none;
  z-index: -1;
}
.ambient-one { width: 32rem; height: 32rem; right: -12rem; top: 14rem; }
.ambient-two { width: 18rem; height: 18rem; left: -8rem; top: 42rem; }

.topbar {
  width: min(1220px, calc(100% - 40px));
  height: 88px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}
.brand {
  display: flex;
  gap: 12px;
  align-items: center;
  color: inherit;
  text-decoration: none;
}
.brand-mark {
  position: relative;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  color: white;
  background: linear-gradient(145deg, #1f6258, #102f2b);
  border: 1px solid rgba(255,255,255,.26);
  border-radius: 13px;
  box-shadow: 0 8px 22px rgba(22, 70, 63, .18);
  font-family: Georgia, serif;
  font-size: 19px;
  font-style: italic;
}
.brand-mark::after {
  content: "";
  position: absolute;
  width: 7px;
  height: 7px;
  right: 7px;
  top: 7px;
  border-top: 1px solid rgba(255,255,255,.75);
  border-right: 1px solid rgba(255,255,255,.75);
}
.brand strong, .brand small { display: block; }
.brand strong { font-size: 13px; letter-spacing: .22em; }
.brand small { margin-top: 3px; color: var(--muted); font-family: Georgia, serif; font-size: 12px; font-style: italic; }
.status {
  display: flex;
  gap: 8px;
  align-items: center;
  padding: 8px 10px;
  color: var(--muted);
  background: transparent;
  border: 0;
  border-radius: 10px;
  font-size: 13px;
}
.status:hover { background: rgba(255,255,255,.52); color: var(--jade-dark); }
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: #b7b7b1; }
.status.ready .status-dot { background: #35a26f; box-shadow: 0 0 0 5px rgba(53, 162, 111, .12); }
.status.demo .status-dot { background: var(--amber); box-shadow: 0 0 0 5px rgba(208, 138, 60, .12); }

main { width: min(1220px, calc(100% - 40px)); margin: 0 auto; }
.hero { padding: 94px 0 68px; }
.eyebrow, .result-label, .section-heading span {
  color: var(--jade);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .22em;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: "";
  width: 30px;
  height: 1px;
  background: var(--jade);
}
.hero h1 {
  max-width: 1050px;
  margin: 22px 0 26px;
  font-family: Georgia, "Noto Serif SC", serif;
  font-size: clamp(52px, 6.5vw, 84px);
  font-weight: 500;
  line-height: 1.03;
  letter-spacing: -.04em;
}
.hero h1 em { color: var(--jade); font-weight: 500; }
.hero > p {
  max-width: 760px;
  margin: 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.85;
}

.identity-studio {
  margin-top: 56px;
  padding: 28px;
  border: 1px solid rgba(31, 98, 88, .13);
  border-radius: 26px;
  background:
    linear-gradient(135deg, rgba(229, 238, 234, .76), rgba(255, 255, 252, .75) 58%),
    var(--card);
  box-shadow: 0 22px 62px rgba(25, 48, 43, .08);
}
.module-heading {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 28px;
}
.step-label {
  display: block;
  margin-bottom: 9px;
  color: var(--jade);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .2em;
}
.module-heading h2 {
  margin: 0;
  font-family: Georgia, "Noto Serif SC", serif;
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 500;
}
.module-heading p {
  max-width: 680px;
  margin: 9px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}
.outline-action {
  flex: 0 0 auto;
  padding: 12px 15px;
  color: var(--jade-dark);
  background: rgba(255,255,255,.65);
  border: 1px solid rgba(31, 98, 88, .24);
  border-radius: 12px;
  font-weight: 700;
}
.outline-action:hover { color: white; background: var(--jade-dark); }
.outline-action span { margin-right: 3px; font-size: 17px; }
.persona-builder-panel {
  margin-top: 24px;
  padding: 24px;
  border: 1px solid rgba(31, 98, 88, .13);
  border-radius: 22px;
  background:
    radial-gradient(circle at 12% 0, rgba(217, 235, 229, .85), transparent 34%),
    linear-gradient(145deg, rgba(255,255,255,.86), rgba(247, 249, 245, .74));
  box-shadow: inset 0 1px rgba(255,255,255,.82);
}
.persona-builder-intro {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: baseline;
  gap: 8px 15px;
  margin-bottom: 2px;
}
.persona-builder-intro span,
.persona-section-label span {
  color: var(--jade);
  font-size: 10px;
  font-weight: 850;
  letter-spacing: .17em;
}
.persona-builder-intro strong,
.persona-section-label strong {
  font-family: Georgia, "Noto Serif SC", serif;
  font-size: 22px;
  font-weight: 600;
}
.persona-builder-intro p {
  grid-column: 1 / -1;
  max-width: 820px;
  margin: 0 0 4px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}
.identity-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 18px;
}
.persona-section-label {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 16px;
  margin-top: 25px;
  padding-top: 22px;
  border-top: 1px solid rgba(31, 98, 88, .12);
}
.persona-section-label > div {
  display: grid;
  gap: 5px;
}
.persona-section-label small {
  max-width: 320px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
  text-align: right;
}
.persona-library {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 14px;
}
.persona-option {
  position: relative;
  min-height: 122px;
  padding: 16px;
  color: var(--ink);
  background: rgba(255,255,255,.66);
  border: 1px solid var(--line);
  border-radius: 16px;
  text-align: left;
  transition: transform .18s, border-color .18s, background .18s, box-shadow .18s;
}
.persona-option:hover {
  transform: translateY(-2px);
  border-color: rgba(31, 98, 88, .34);
  box-shadow: 0 12px 25px rgba(25, 48, 43, .07);
}
.persona-option.selected {
  color: white;
  background: linear-gradient(145deg, #1f6258, #123c36);
  border-color: transparent;
  box-shadow: 0 14px 30px rgba(22, 70, 63, .18);
}
.persona-option .persona-tag {
  display: block;
  margin-bottom: 20px;
  color: var(--jade);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: .16em;
}
.persona-option.selected .persona-tag,
.persona-option.selected small { color: rgba(255,255,255,.67); }
.persona-option strong { display: block; margin-bottom: 6px; font-family: Georgia, "Noto Serif SC", serif; font-size: 20px; font-weight: 600; }
.persona-option small { display: block; color: var(--muted); font-size: 11px; line-height: 1.45; }
.persona-delete {
  position: absolute;
  right: 9px;
  top: 8px;
  width: 25px;
  height: 25px;
  padding: 0;
  color: var(--muted);
  background: transparent;
  border: 0;
  border-radius: 50%;
  font-size: 16px;
}
.persona-delete:hover { color: #963f37; background: rgba(150,63,55,.1); }
.persona-option.selected .persona-delete { color: rgba(255,255,255,.7); }
.library-drawer {
  margin-top: 25px;
  border: 1px solid rgba(31, 98, 88, .12);
  border-radius: 18px;
  background: rgba(255,255,255,.48);
  overflow: hidden;
}
.library-toggle {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  padding: 16px 18px;
  color: var(--ink);
  background: transparent;
  border: 0;
  text-align: left;
}
.library-toggle b {
  display: block;
  margin-bottom: 3px;
  font-family: Georgia, "Noto Serif SC", serif;
  font-size: 20px;
  font-weight: 600;
}
.library-toggle small {
  color: var(--muted);
  font-size: 12px;
}
.library-toggle i {
  flex: 0 0 auto;
  font-style: normal;
  color: var(--jade-dark);
  font-size: 12px;
  font-weight: 800;
}
.library-toggle:hover { background: rgba(231, 239, 235, .62); }
.custom-persona-library {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  padding: 0 14px 14px;
}
.empty-custom-library {
  grid-column: 1 / -1;
  padding: 20px;
  border: 1px dashed rgba(31, 98, 88, .22);
  border-radius: 14px;
  background: rgba(255,255,255,.58);
}
.empty-custom-library strong {
  display: block;
  margin-bottom: 6px;
  font-family: Georgia, "Noto Serif SC", serif;
  font-size: 18px;
  font-weight: 600;
}
.empty-custom-library p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.65;
}
.persona-profile {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 22px;
  margin-top: 13px;
  padding: 17px 18px;
  border: 1px solid rgba(31, 98, 88, .11);
  border-radius: 15px;
  background: rgba(255,255,255,.48);
}
.persona-profile > div { min-width: 0; }
.persona-profile .persona-profile-wide {
  grid-column: 1 / -1;
  padding-top: 13px;
  border-top: 1px solid var(--line);
}
.persona-profile span { display: block; margin-bottom: 5px; color: var(--muted); font-size: 10px; font-weight: 800; letter-spacing: .1em; }
.persona-profile strong { display: block; font-size: 13px; line-height: 1.55; }
.persona-profile p { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.6; }
.persona-profile p b { color: var(--ink); font-weight: 700; }
.library-drawer .persona-profile {
  margin: 0 14px 14px;
  background: rgba(255,255,255,.62);
}

.generator {
  position: relative;
  margin-top: 18px;
  padding: 28px;
  border: 1px solid rgba(255,255,255,.8);
  border-radius: 26px;
  background: var(--card);
  box-shadow: 0 30px 90px rgba(25, 48, 43, .12);
  backdrop-filter: blur(18px);
  overflow: hidden;
}
.generator::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(31, 98, 88, .65), transparent);
}
.generator-heading { margin-bottom: 14px; }
.generator-heading label { display: block; font-weight: 750; font-size: 14px; letter-spacing: .02em; }
.topic-row { display: grid; grid-template-columns: 1fr auto; gap: 14px; }
textarea {
  width: 100%;
  min-height: 96px;
  resize: vertical;
  padding: 19px 20px;
  color: var(--ink);
  background: rgba(244, 246, 242, .72);
  border: 1px solid var(--line);
  border-radius: 18px;
  outline: none;
  font-size: 17px;
  line-height: 1.55;
  transition: .2s;
}
textarea:focus { border-color: var(--jade); box-shadow: 0 0 0 4px rgba(31, 98, 88, .09); }
.primary-button {
  min-width: 210px;
  padding: 0 22px;
  color: white;
  background: var(--jade-dark);
  border: 0;
  border-radius: 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 22px;
  font-weight: 750;
  transition: transform .2s, background .2s;
}
.primary-button:hover { transform: translateY(-2px); background: var(--jade); }
.primary-button:disabled { cursor: wait; opacity: .65; transform: none; }
.primary-button.compact { min-width: 210px; min-height: 48px; }
.arrow { font-size: 22px; }
.form-meta { margin-top: 16px; display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.select-wrap { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 13px; }
select {
  padding: 8px 30px 8px 10px;
  color: var(--ink);
  background: white;
  border: 1px solid var(--line);
  border-radius: 10px;
}
.chosen-persona { display: flex; align-items: baseline; gap: 8px; min-width: 0; }
.chosen-persona span { color: var(--muted); font-size: 12px; }
.chosen-persona strong { color: var(--jade-dark); font-size: 13px; }
.chosen-persona small { color: #84908c; font-size: 11px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.text-button {
  padding: 8px 11px;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 12px;
}
.text-button:hover { color: var(--jade-dark); border-color: var(--jade); }
.text-button { margin-left: auto; border-style: dashed; }

.loading-panel {
  display: flex;
  align-items: center;
  gap: 24px;
  margin: 4px 0 70px;
  padding: 25px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: rgba(255,255,255,.58);
}
.loading-panel strong { display: block; margin-bottom: 5px; }
.loading-panel p { margin: 0; color: var(--muted); }
.orbital-loader { width: 46px; height: 46px; border: 1px solid var(--pale-jade); border-radius: 50%; position: relative; }
.orbital-loader span {
  position: absolute; inset: 5px;
  border: 2px solid transparent; border-top-color: var(--jade);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.workspace { padding: 24px 0 90px; }
.workspace-head { display: flex; justify-content: space-between; gap: 28px; align-items: flex-end; }
.workspace-head h2 { margin: 8px 0 7px; font-family: Georgia, "Noto Serif SC", serif; font-size: clamp(31px, 4vw, 52px); font-weight: 500; }
.workspace-head p { max-width: 700px; margin: 0; color: var(--muted); line-height: 1.7; }
.workspace-actions { display: flex; gap: 9px; align-items: center; flex-wrap: wrap; justify-content: flex-end; }
.language-toggle { display: flex; padding: 4px; background: rgba(255,255,255,.7); border: 1px solid var(--line); border-radius: 12px; }
.language-toggle button { padding: 8px 10px; border: 0; border-radius: 8px; background: transparent; color: var(--muted); font-size: 12px; }
.language-toggle button.active { color: white; background: var(--jade-dark); }
.secondary-button {
  padding: 11px 14px;
  color: var(--ink);
  background: rgba(255,255,255,.7);
  border: 1px solid var(--line);
  border-radius: 12px;
}
.secondary-button:hover { border-color: var(--jade); color: var(--jade-dark); }
.secondary-button.accent, .edit-button.active { color: white; background: var(--jade-dark); border-color: var(--jade-dark); }

.persona-card {
  margin: 28px 0;
  padding: 18px 20px;
  display: flex;
  gap: 15px;
  align-items: center;
  background: linear-gradient(100deg, rgba(220, 232, 227, .8), rgba(255,255,255,.42));
  border: 1px solid rgba(31, 98, 88, .12);
  border-radius: 18px;
}
.persona-avatar { flex: 0 0 auto; width: 48px; height: 48px; display: grid; place-items: center; border-radius: 50%; color: white; background: var(--jade); font-family: serif; font-size: 21px; }
.persona-card small, .persona-card strong { display: block; }
.persona-card small { margin-bottom: 3px; color: var(--muted); }
.persona-card p { margin: 4px 0 0; color: var(--muted); font-size: 13px; }

.platform-layout { display: grid; grid-template-columns: 210px 1fr; gap: 24px; align-items: start; }
.platform-nav {
  position: sticky;
  top: 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 9px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.56);
  border-radius: 18px;
}
.platform-nav button {
  padding: 12px 13px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--muted);
  background: transparent;
  border: 0;
  border-radius: 11px;
  text-align: left;
}
.platform-nav button::after { content: "→"; opacity: 0; }
.platform-nav button.active { color: white; background: var(--jade-dark); }
.platform-nav button.active::after { opacity: 1; }

.platform-panel { display: none; }
.platform-panel.active { display: block; animation: rise .28s ease both; }
@keyframes rise { from { opacity: 0; transform: translateY(8px); } }
.platform-title-row { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; margin-bottom: 15px; }
.platform-title-row h3 { margin: 0 0 5px; font-family: Georgia, serif; font-size: 32px; }
.platform-title-row p { margin: 0; color: var(--muted); }
.copy-platform { padding: 10px 13px; border: 1px solid var(--line); background: white; border-radius: 10px; color: var(--jade-dark); }
.section-card {
  margin-bottom: 12px;
  padding: 21px;
  background: rgba(255,255,255,.72);
  border: 1px solid var(--line);
  border-radius: 17px;
}
.section-card-head { display: flex; justify-content: space-between; gap: 12px; align-items: center; margin-bottom: 15px; }
.section-card h4 { margin: 0; font-size: 15px; }
.copy-section { border: 0; background: transparent; color: var(--muted); font-size: 12px; }
.copy-section:hover { color: var(--jade); }
.bilingual-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.language-block { min-width: 0; }
.language-block + .language-block { border-left: 1px solid var(--line); padding-left: 18px; }
.language-label { display: inline-block; margin-bottom: 8px; color: var(--jade); font-weight: 800; font-size: 10px; letter-spacing: .13em; }
.language-block.zh .language-label { color: #ad6a2d; }
.content-text { margin: 0; white-space: pre-wrap; overflow-wrap: anywhere; line-height: 1.72; font-size: 14px; }
.content-text.is-editing {
  min-height: 92px;
  padding: 12px;
  background: #fffef9;
  border: 1px solid var(--jade);
  border-radius: 10px;
  outline: none;
  box-shadow: 0 0 0 4px rgba(31, 98, 88, .08);
}
.usage-note { margin: 15px 0 0; padding-top: 12px; border-top: 1px dashed var(--line); color: var(--muted); font-size: 12px; line-height: 1.6; }
.hashtags { margin-top: 12px; padding: 16px 18px; background: rgba(220, 232, 227, .48); border-radius: 14px; color: var(--jade-dark); line-height: 1.8; font-size: 13px; }

.visual-studio {
  margin-top: 28px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}
.visual-studio-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 22px;
  margin-bottom: 18px;
}
.visual-kicker { color: var(--amber); font-size: 10px; font-weight: 800; letter-spacing: .19em; }
.visual-studio-head h4 { margin: 6px 0 5px; font-family: Georgia, "Noto Serif SC", serif; font-size: 28px; font-weight: 500; }
.visual-studio-head p { margin: 0; color: var(--muted); font-size: 13px; }
.visual-actions { display: flex; justify-content: flex-end; align-items: flex-end; gap: 8px; flex-wrap: wrap; }
.visual-actions label { display: grid; gap: 5px; color: var(--muted); font-size: 10px; }
.visual-actions select { min-width: 125px; padding: 9px 28px 9px 9px; font-size: 12px; }
.visual-actions button { padding: 10px 12px; font-size: 12px; }
.visual-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 13px; }
.visual-card {
  display: grid;
  grid-template-columns: minmax(150px, .8fr) minmax(190px, 1.2fr);
  gap: 14px;
  padding: 14px;
  background: rgba(255,255,255,.72);
  border: 1px solid var(--line);
  border-radius: 17px;
}
.canvas-wrap { overflow: hidden; align-self: start; border-radius: 12px; background: #e5ece8; box-shadow: 0 12px 28px rgba(22, 54, 48, .13); }
.canvas-wrap canvas { display: block; width: 100%; height: auto; }
.visual-editor { min-width: 0; }
.page-badge { display: block; margin-bottom: 8px; color: var(--jade); font-size: 9px; font-weight: 800; letter-spacing: .15em; }
.visual-editor label { display: block; margin-bottom: 7px; color: var(--muted); font-size: 9px; font-weight: 700; }
.visual-editor input, .visual-editor textarea {
  width: 100%;
  margin-top: 4px;
  padding: 8px 9px;
  color: var(--ink);
  background: #fffefb;
  border: 1px solid var(--line);
  border-radius: 8px;
  outline: none;
  font-size: 11px;
  line-height: 1.45;
}
.visual-editor textarea { min-height: 58px; resize: vertical; }
.visual-editor input:focus, .visual-editor textarea:focus { border-color: var(--jade); box-shadow: 0 0 0 3px rgba(31,98,88,.08); }
.visual-editor small { display: block; color: var(--muted); font-size: 9px; line-height: 1.45; }
.download-page { margin-top: 9px; padding: 7px 9px; color: var(--jade-dark); background: transparent; border: 1px solid var(--line); border-radius: 8px; font-size: 10px; }
.download-page:hover { border-color: var(--jade); }
body[data-language="en"] .language-block.zh { display: none; }
body[data-language="en"] .bilingual-grid { grid-template-columns: 1fr; }
body[data-language="zh"] .language-block.en { display: none; }
body[data-language="zh"] .bilingual-grid { grid-template-columns: 1fr; }
body[data-language="zh"] .language-block.zh { border-left: 0; padding-left: 0; }

.history-section { padding: 42px 0 100px; border-top: 1px solid var(--line); }
.section-heading h2 { margin: 7px 0 20px; font-family: Georgia, serif; font-size: 35px; font-weight: 500; }
.history-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.history-item { padding: 17px; text-align: left; border: 1px solid var(--line); border-radius: 15px; background: rgba(255,255,255,.55); }
.history-item strong, .history-item small { display: block; }
.history-item strong { margin-bottom: 8px; }
.history-item small { color: var(--muted); }
.empty-history { color: var(--muted); }

.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  transform: translate(-50%, 20px);
  padding: 11px 16px;
  color: white;
  background: var(--ink);
  border-radius: 10px;
  opacity: 0;
  pointer-events: none;
  transition: .25s;
  z-index: 10;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(10, 26, 23, .48);
  backdrop-filter: blur(8px);
}
.settings-card {
  position: relative;
  width: min(520px, 100%);
  padding: 30px;
  background: #fbfbf7;
  border: 1px solid rgba(255,255,255,.72);
  border-radius: 24px;
  box-shadow: 0 32px 90px rgba(8, 30, 25, .28);
}
.modal-close {
  position: absolute;
  right: 18px;
  top: 15px;
  width: 34px;
  height: 34px;
  color: var(--muted);
  background: transparent;
  border: 0;
  border-radius: 50%;
  font-size: 24px;
}
.modal-close:hover { background: var(--pale-jade); color: var(--ink); }
.settings-kicker { color: var(--jade); font-size: 10px; font-weight: 800; letter-spacing: .2em; }
.settings-card h2 { margin: 8px 0 10px; font-family: Georgia, "Noto Serif SC", serif; font-size: 31px; font-weight: 500; }
.settings-card > p { color: var(--muted); line-height: 1.65; font-size: 14px; }
.settings-field { display: block; margin-top: 18px; }
.settings-field > span { display: block; margin-bottom: 8px; font-size: 13px; font-weight: 750; }
.settings-field input, .settings-field select, .settings-field textarea {
  width: 100%;
  padding: 13px 14px;
  color: var(--ink);
  background: white;
  border: 1px solid var(--line);
  border-radius: 11px;
  outline: none;
  font-size: 14px;
}
.settings-field textarea {
  min-height: 112px;
  resize: vertical;
  line-height: 1.55;
}
.settings-field input:focus, .settings-field select:focus, .settings-field textarea:focus {
  border-color: var(--jade);
  box-shadow: 0 0 0 4px rgba(31, 98, 88, .09);
}
.persona-builder-card { width: min(780px, calc(100% - 30px)); }
.persona-form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.settings-field span small { color: var(--muted); font-weight: 400; }
.field-help { margin: 7px 0 0; font-size: 11px !important; }
.field-help a { color: var(--jade); font-weight: 700; text-decoration: none; }
.field-help a:hover { text-decoration: underline; }
.persist-option { display: flex; gap: 9px; align-items: flex-start; margin-top: 17px; color: var(--muted); font-size: 12px; line-height: 1.5; }
.persist-option input { margin-top: 2px; accent-color: var(--jade); }
.settings-error { margin-top: 14px; padding: 10px 12px; color: #8a3028; background: #f8e8e5; border-radius: 9px; font-size: 12px; }
.settings-actions { display: flex; justify-content: flex-end; gap: 9px; margin-top: 22px; }

@media (max-width: 900px) {
  .hero { padding-top: 60px; }
  .persona-library { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .custom-persona-library { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .persona-profile { grid-template-columns: 1fr; gap: 12px; }
  .topic-row { grid-template-columns: 1fr; }
  .primary-button { min-height: 60px; }
  .workspace-head { align-items: flex-start; flex-direction: column; }
  .workspace-actions { justify-content: flex-start; }
  .platform-layout { grid-template-columns: 1fr; }
  .platform-nav { position: static; flex-direction: row; overflow-x: auto; }
  .platform-nav button { min-width: max-content; }
  .bilingual-grid { grid-template-columns: 1fr; }
  .language-block + .language-block { border-left: 0; border-top: 1px solid var(--line); padding: 15px 0 0; }
  .history-list { grid-template-columns: 1fr 1fr; }
  .visual-studio-head { align-items: flex-start; flex-direction: column; }
  .visual-actions { justify-content: flex-start; }
  .visual-grid { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .topbar, main { width: min(100% - 24px, 1220px); }
  .topbar { height: 72px; }
  .status span:last-child { display: none; }
  .hero h1 { font-size: 47px; }
  .hero > p { font-size: 15px; }
  .eyebrow { font-size: 9px; letter-spacing: .16em; }
  .identity-studio { padding: 18px; }
  .module-heading { align-items: flex-start; flex-direction: column; }
  .outline-action { width: 100%; }
  .persona-library { grid-template-columns: 1fr; }
  .custom-persona-library { grid-template-columns: 1fr; }
  .persona-builder-panel { padding: 18px; }
  .persona-builder-intro { grid-template-columns: 1fr; }
  .persona-section-label { align-items: flex-start; flex-direction: column; }
  .persona-section-label small { text-align: left; }
  .persona-form-grid { grid-template-columns: 1fr; gap: 0; }
  .chosen-persona { align-items: flex-start; flex-direction: column; gap: 3px; }
  .chosen-persona small { max-width: 100%; }
  .generator { padding: 16px; border-radius: 20px; }
  .text-button { margin-left: 0; }
  .platform-title-row { flex-direction: column; }
  .history-list { grid-template-columns: 1fr; }
  .visual-card { grid-template-columns: 1fr; }
  .canvas-wrap { max-width: 280px; margin: 0 auto; }
  .settings-card { padding: 25px 18px 20px; }
  .settings-actions { flex-direction: column-reverse; }
  .settings-actions button { width: 100%; }
}