/* ============================================================
   蓝印花布 · 纹样工坊 —— 视觉规范
   浅色宣纸基调 + 靛蓝主色 + 朱砂点缀
   ============================================================ */
:root {
  --indigo-900: #10233F;
  --indigo-800: #16305A;
  --indigo-700: #1B3A6B;
  --indigo-600: #24488A;
  --indigo-500: #35619F;
  --indigo-300: #7E9BC9;
  --indigo-100: #DCE5F2;

  --paper: #F7F4EC;
  --paper-2: #FFFDF7;
  --paper-3: #EFEADD;
  --line: #DCD5C4;
  --line-soft: #EAE4D6;

  --ink: #23201A;
  --ink-2: #5C5648;
  --ink-3: #8C8574;

  --cinnabar: #A8322A;
  --cinnabar-soft: #F3E2DE;
  --jade: #3F6F5B;

  --radius: 4px;
  --radius-lg: 8px;
  --shadow-sm: 0 1px 3px rgba(27, 58, 107, 0.08);
  --shadow: 0 6px 20px rgba(27, 58, 107, 0.10);
  --shadow-lg: 0 18px 48px rgba(16, 35, 63, 0.20);

  --ff-serif: "Songti SC", "Noto Serif CJK SC", "Source Han Serif SC", "SimSun", serif;
  --ff-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --ff-mono: "SF Mono", Menlo, Consolas, monospace;

  --maxw: 1200px;
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--ff-sans);
  font-size: 15px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  background-image:
    linear-gradient(rgba(27, 58, 107, 0.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(27, 58, 107, 0.022) 1px, transparent 1px);
  background-size: 22px 22px;
}

a { color: var(--indigo-600); text-decoration: none; }
a:hover { color: var(--cinnabar); }

h1, h2, h3, h4 {
  font-family: var(--ff-serif);
  font-weight: 700;
  color: var(--indigo-800);
  letter-spacing: 0.02em;
  margin: 0;
}

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }

/* ---------- 顶栏 ---------- */
.topbar {
  position: sticky; top: 0; z-index: 40;
  background: rgba(247, 244, 236, 0.92);
  backdrop-filter: saturate(1.2) blur(8px);
  border-bottom: 1px solid var(--line);
}
.topbar-in {
  max-width: var(--maxw); margin: 0 auto; padding: 0 28px;
  height: 62px; display: flex; align-items: center; gap: 22px;
}
.brand { display: flex; align-items: center; gap: 11px; }
.brand-mark {
  width: 32px; height: 32px; flex: none; border-radius: 3px;
  background: var(--indigo-700);
  display: grid; place-items: center;
  box-shadow: inset 0 0 0 1.5px rgba(247,244,236,0.55);
}
.brand-mark span { color: var(--paper); font-family: var(--ff-serif); font-size: 15px; font-weight: 700; }
.brand-name { font-family: var(--ff-serif); font-size: 17px; font-weight: 700; color: var(--indigo-800); line-height: 1.15; }
.brand-sub { font-size: 10.5px; color: var(--ink-3); letter-spacing: 0.14em; line-height: 1; }
.nav { margin-left: auto; display: flex; gap: 4px; align-items: center; }
.nav a {
  padding: 7px 14px; border-radius: var(--radius);
  color: var(--ink-2); font-size: 14px;
}
.nav a:hover { background: var(--paper-3); color: var(--indigo-700); }
.nav a.on { background: var(--indigo-700); color: var(--paper); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  padding: 9px 18px; border-radius: var(--radius);
  border: 1px solid var(--indigo-700); background: var(--indigo-700); color: var(--paper);
  font-family: var(--ff-sans); font-size: 14px; cursor: pointer;
  transition: transform .12s ease, background .15s ease, box-shadow .15s ease;
}
.btn:hover { background: var(--indigo-600); box-shadow: var(--shadow-sm); }
.btn:active { transform: translateY(1px); }
.btn.ghost { background: transparent; color: var(--indigo-700); }
.btn.ghost:hover { background: var(--indigo-100); }
.btn.sm { padding: 6px 12px; font-size: 13px; }
.btn.wide { width: 100%; }
.btn.danger { background: var(--cinnabar); border-color: var(--cinnabar); }
.btn:disabled { opacity: .45; cursor: not-allowed; }

.chip {
  display: inline-flex; align-items: center;
  padding: 4px 11px; border-radius: 999px;
  border: 1px solid var(--line); background: var(--paper-2);
  color: var(--ink-2); font-size: 12.5px; cursor: pointer; user-select: none;
  transition: all .13s ease;
}
.chip:hover { border-color: var(--indigo-300); color: var(--indigo-700); }
.chip.on { background: var(--indigo-700); border-color: var(--indigo-700); color: var(--paper); }

.tag {
  display: inline-block; padding: 2px 8px; border-radius: 2px;
  background: var(--indigo-100); color: var(--indigo-700);
  font-size: 11.5px; line-height: 1.6;
}
.tag.warm { background: var(--cinnabar-soft); color: var(--cinnabar); }

/* ---------- 通用区块 ---------- */
.section { padding: 56px 0; }
.section.tight { padding: 36px 0; }
.eyebrow {
  font-size: 12px; letter-spacing: 0.3em; color: var(--cinnabar);
  text-transform: uppercase; margin-bottom: 10px;
}
.h-xl { font-size: 40px; line-height: 1.25; letter-spacing: 0.01em; }
.h-l { font-size: 27px; line-height: 1.35; }
.h-m { font-size: 19px; }
.lede { font-size: 16px; color: var(--ink-2); max-width: 62ch; }
.muted { color: var(--ink-3); }
.small { font-size: 13px; }
.mono { font-family: var(--ff-mono); font-size: 12px; }

.card {
  background: var(--paper-2); border: 1px solid var(--line);
  border-radius: var(--radius-lg); padding: 22px;
}
.card.flat { box-shadow: none; }
.hr { height: 1px; background: var(--line-soft); margin: 26px 0; border: 0; }

.grid { display: grid; gap: 20px; }
.g2 { grid-template-columns: repeat(2, 1fr); }
.g3 { grid-template-columns: repeat(3, 1fr); }
.g4 { grid-template-columns: repeat(4, 1fr); }

/* ---------- 首页 ---------- */
.hero { padding: 68px 0 46px; }
/* fr 的最小尺寸默认受内容约束：hero 图从 <canvas> 换成 <img> 之后，
   图片的固有宽度（这张素材 977px）会把右列顶开、把左栏挤成一条竖排文字的窄缝。
   minmax(0, …) 把最小宽度放开，列宽才真的按 fr 比例分配。 */
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr); gap: 48px; align-items: center; }
.hero-grid > * { min-width: 0; }
.hero h1 { font-size: 44px; line-height: 1.22; }
.hero .lede { margin-top: 18px; font-size: 16.5px; }
.hero-cta { margin-top: 26px; display: flex; gap: 12px; flex-wrap: wrap; }
.hero-facts { margin-top: 30px; display: flex; gap: 30px; flex-wrap: wrap; }
.fact b { font-family: var(--ff-serif); font-size: 25px; color: var(--indigo-700); display: block; line-height: 1.2; }
.fact span { font-size: 12.5px; color: var(--ink-3); }
.hero-art {
  position: relative; aspect-ratio: 1/1; width: 100%; max-width: 540px;
  justify-self: end;
  border-radius: var(--radius-lg);
  overflow: hidden; border: 1px solid var(--line); box-shadow: var(--shadow);
  background: var(--indigo-700);
}
.hero-art canvas { width: 100%; height: 100%; display: block; }
.hero-art-note {
  position: absolute; left: 0; right: 0; bottom: 0; padding: 26px 14px 10px;
  background: linear-gradient(transparent, rgba(16,35,63,.92));
  color: #EFE9DA; font-size: 12px; letter-spacing: .04em;
  /* 方巾式素材的母题名可以很长，限两行免得溢出成一行乱码 */
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}

.constraint {
  border-left: 3px solid var(--cinnabar); background: var(--paper-2);
  padding: 20px 24px; border-radius: 0 var(--radius) var(--radius) 0;
  border-top: 1px solid var(--line-soft); border-right: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; }
.step { padding: 0 26px; border-left: 1px solid var(--line); }
.step:first-child { border-left: 0; padding-left: 0; }
.step-n { font-family: var(--ff-serif); font-size: 13px; color: var(--cinnabar); letter-spacing: .2em; }
.step h3 { margin: 8px 0 8px; font-size: 18px; }
.step p { margin: 0; color: var(--ink-2); font-size: 14px; }

/* 工艺时间轴 */
.craftflow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.craft-step { position: relative; padding: 20px 18px; background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius-lg); }
.craft-step .num {
  font-family: var(--ff-serif); font-size: 12px; letter-spacing: .18em;
  color: var(--paper); background: var(--indigo-700);
  display: inline-block; padding: 2px 9px; border-radius: 2px;
}
.craft-step h4 { margin: 12px 0 6px; font-size: 17px; }
.craft-step p { margin: 0; font-size: 13.5px; color: var(--ink-2); }

/* ---------- 纹样库 ---------- */
.filters { display: flex; flex-direction: column; gap: 12px; margin-bottom: 22px; }
.filter-row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.filter-row > .lab { font-size: 12.5px; color: var(--ink-3); min-width: 62px; }
.search {
  flex: 1; min-width: 200px; padding: 8px 13px; font-size: 14px;
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--paper-2); color: var(--ink); font-family: var(--ff-sans);
}
.search:focus { outline: none; border-color: var(--indigo-300); }

.gallery-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(196px, 1fr)); gap: 18px; }
.gcard {
  background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius-lg);
  overflow: hidden; cursor: pointer; transition: box-shadow .16s ease, transform .16s ease, border-color .16s;
}
.gcard:hover { box-shadow: var(--shadow); transform: translateY(-2px); border-color: var(--indigo-300); }
.gcard-img { aspect-ratio: 1/1; background: var(--paper-3); overflow: hidden; }
.gcard-img img { width: 100%; height: 100%; object-fit: cover; display: block; }
.gcard-body { padding: 11px 13px 13px; }
.gcard-name { font-family: var(--ff-serif); font-size: 15.5px; color: var(--indigo-800); }
.gcard-meta { display: flex; gap: 6px; align-items: center; margin-top: 5px; flex-wrap: wrap; }
.gcard-meta .small { font-size: 11.5px; }
.empty { padding: 60px 0; text-align: center; color: var(--ink-3); }

/* 详情弹窗 */
.modal-mask {
  position: fixed; inset: 0; background: rgba(16, 35, 63, .5);
  display: none; align-items: center; justify-content: center; z-index: 90; padding: 26px;
}
.modal-mask.on { display: flex; }
.modal {
  background: var(--paper); border-radius: var(--radius-lg); box-shadow: var(--shadow-lg);
  max-width: 900px; width: 100%; max-height: 88vh; overflow: auto; padding: 26px;
}
.modal-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 26px; }
.modal-img { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--paper-3); }
.modal-img img { width: 100%; display: block; }
.kv { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.kv td { padding: 7px 0; border-bottom: 1px solid var(--line-soft); vertical-align: top; }
.kv td:first-child { color: var(--ink-3); width: 82px; }
/* 规则摘要里的键名是中文长词（如「必须出现的传统元素」），82px 放不下会被挤到下一列错位；
   这一处改成贴合内容宽度，第二列吃掉剩余空间。 */
.prompt-sec .kv td:first-child { width: 1%; white-space: nowrap; padding-right: 16px; }

/* ---------- 生成工作台 ---------- */
.studio { display: grid; grid-template-columns: 296px minmax(0, 1fr) 232px; gap: 22px; align-items: start; }
.panel { background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 18px; }
.panel h3 { font-size: 15px; margin-bottom: 12px; }
.field { margin-bottom: 15px; }
.field > label { display: block; font-size: 12.5px; color: var(--ink-3); margin-bottom: 6px; }
.input, select.input {
  width: 100%; padding: 8px 11px; font-size: 14px; font-family: var(--ff-sans);
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--paper); color: var(--ink);
}
.input:focus { outline: none; border-color: var(--indigo-300); }
textarea.input { resize: vertical; min-height: 74px; line-height: 1.6; }
.range { width: 100%; accent-color: var(--indigo-600); }
.range-row { display: flex; justify-content: space-between; font-size: 12px; color: var(--ink-3); }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.seg { display: flex; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.seg button {
  flex: 1; padding: 7px 4px; border: 0; border-left: 1px solid var(--line);
  background: var(--paper); color: var(--ink-2); font-size: 12.5px; cursor: pointer;
  font-family: var(--ff-sans);
}
.seg button:first-child { border-left: 0; }
.seg button.on { background: var(--indigo-700); color: var(--paper); }

.canvas-wrap {
  background: var(--indigo-900); border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 16px; display: grid; grid-template-columns: minmax(0, 1fr); place-items: center;
  min-height: 420px; overflow: hidden;
}
#main-canvas { width: 100%; max-width: 560px; aspect-ratio: 1/1; display: block; border-radius: 3px; }
/* 生成图是接口回传的 2K/3K 方图（2048px 起），必须显式锁尺寸 ——
   否则它按固有尺寸铺开，直接把整个画布区顶破。
   另外 grid 的 auto 列会按内容 min-content 撑开，所以列宽要先 minmax(0, 1fr) 放开。 */
#result-img {
  display: block; margin: 0 auto; min-width: 0;
  width: auto; height: auto;
  max-width: min(560px, 100%);
  max-height: min(620px, 66vh);
  border-radius: 3px; background: #fff;
}
.canvas-bar { display: flex; align-items: center; gap: 10px; margin-top: 14px; flex-wrap: wrap; }
.canvas-bar .grow { flex: 1; }
.name-input {
  font-family: var(--ff-serif); font-size: 17px; color: var(--indigo-800);
  border: 0; border-bottom: 1px dashed var(--line); background: transparent;
  padding: 3px 2px; width: 200px;
}
.name-input:focus { outline: none; border-bottom-color: var(--indigo-500); }

.variants { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.vcard { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; cursor: pointer; background: var(--paper); }
.vcard:hover { border-color: var(--indigo-500); }
.vcard.on { border-color: var(--cinnabar); box-shadow: 0 0 0 2px var(--cinnabar-soft); }
.vcard canvas, .vcard img { width: 100%; display: block; aspect-ratio: 1/1; object-fit: cover; }
.vcard-cap { font-size: 11px; color: var(--ink-3); padding: 4px 6px; display: flex; justify-content: space-between; }

/* 合规报告 */
.report { margin-top: 18px; }
.report-head { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.score {
  font-family: var(--ff-serif); font-size: 30px; color: var(--indigo-700); line-height: 1;
}
.score.bad { color: var(--cinnabar); }
.check { display: flex; gap: 10px; padding: 9px 0; border-bottom: 1px solid var(--line-soft); font-size: 13.5px; }
.check:last-child { border-bottom: 0; }
.check .ico { flex: none; width: 17px; height: 17px; border-radius: 50%; display: grid; place-items: center; font-size: 11px; color: #fff; margin-top: 3px; }
.check .ico.ok { background: var(--jade); }
.check .ico.no { background: var(--cinnabar); }
.check b { display: block; font-size: 13.5px; font-weight: 600; color: var(--ink); }
.check span { color: var(--ink-3); font-size: 12.5px; }
.metrics { display: flex; gap: 18px; flex-wrap: wrap; margin-top: 12px; font-size: 12.5px; color: var(--ink-3); }
.metrics b { color: var(--indigo-700); font-size: 14px; }

/* API 面板 */
.drawer-mask { position: fixed; inset: 0; background: rgba(16,35,63,.42); display: none; z-index: 95; }
.drawer-mask.on { display: block; }
.drawer {
  position: fixed; top: 0; right: 0; bottom: 0; width: 430px; max-width: 94vw;
  background: var(--paper); border-left: 1px solid var(--line);
  box-shadow: -12px 0 40px rgba(16,35,63,.18); z-index: 96;
  transform: translateX(102%); transition: transform .24s cubic-bezier(.4,0,.2,1);
  display: flex; flex-direction: column;
}
.drawer.on { transform: none; }
.drawer-head { padding: 18px 22px; border-bottom: 1px solid var(--line); display: flex; align-items: center; gap: 12px; }
.drawer-head h3 { font-size: 17px; }
.drawer-body { padding: 20px 22px 30px; overflow: auto; flex: 1; }
.drawer-foot { padding: 14px 22px; border-top: 1px solid var(--line); display: flex; gap: 10px; }
.switch { display: flex; align-items: center; gap: 9px; cursor: pointer; }
.switch input { width: 16px; height: 16px; accent-color: var(--indigo-700); }
.hint { font-size: 12.5px; color: var(--ink-3); line-height: 1.65; }
.status { padding: 9px 12px; border-radius: var(--radius); font-size: 13px; margin-top: 12px; display: none; white-space: pre-wrap; line-height: 1.7; }
.status.on { display: block; }
.status.ok { background: #E8F1EA; color: var(--jade); }
.status.no { background: var(--cinnabar-soft); color: var(--cinnabar); }
.status.busy { background: var(--indigo-100); color: var(--indigo-700); }

.toast {
  position: fixed; left: 50%; bottom: 32px; transform: translateX(-50%) translateY(20px);
  background: var(--indigo-800); color: var(--paper); padding: 11px 20px;
  border-radius: var(--radius); font-size: 13.5px; opacity: 0; pointer-events: none;
  transition: all .22s ease; z-index: 120;
}
.toast.on { opacity: 1; transform: translateX(-50%); }

/* 提示词面板 */
#drawer-prompt { width: 580px; }
.pmode { display: flex; gap: 6px; flex-wrap: wrap; }
.prompt-sec { margin-bottom: 16px; }
.prompt-sec h4 {
  font-family: var(--ff-sans); font-size: 12.5px; font-weight: 600;
  color: var(--indigo-700); margin: 0 0 6px;
}
.prompt-box {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 11px 13px; font-size: 12.5px; line-height: 1.72;
  white-space: pre-wrap; word-break: break-word;
  max-height: 320px; overflow: auto; color: var(--ink-2);
}
.prompt-box.negative { border-left: 3px solid var(--cinnabar); background: #FBF6F5; }
.prompt-box.craft { border-left: 3px solid var(--indigo-600); }
.tuning { font-size: 12.5px; line-height: 1.8; color: var(--ink-2); }
.tuning b { color: var(--indigo-700); }

/* 规则组成 / 取值域列表 */
.rule-list { font-size: 12.5px; }
.rule-row {
  display: flex; gap: 12px; padding: 6px 0;
  border-bottom: 1px solid var(--line-soft); line-height: 1.7;
}
.rule-row:last-child { border-bottom: 0; }
.rule-row b { flex: none; min-width: 96px; color: var(--indigo-700); font-weight: 600; }
.rule-row span { color: var(--ink-2); }

/* ---------- 参考素材条 ---------- */
.refstrip { display: flex; gap: 8px; flex-wrap: wrap; min-height: 52px; align-items: center; }
.ref-empty {
  font-size: 12.5px; color: var(--ink-3); border: 1px dashed var(--line);
  border-radius: var(--radius); padding: 12px; width: 100%;
}
.ref-chip {
  position: relative; width: 52px; height: 52px; border-radius: var(--radius);
  overflow: hidden; border: 1px solid var(--line); background: var(--paper-3);
}
.ref-chip img { width: 100%; height: 100%; object-fit: cover; display: block; }
.ref-x {
  position: absolute; top: 0; right: 0; width: 17px; height: 17px; border: 0;
  background: rgba(16,35,63,.78); color: #fff; font-size: 12px; line-height: 1;
  cursor: pointer; border-radius: 0 0 0 6px; padding: 0;
}
.ref-x:hover { background: var(--cinnabar); }

/* ---------- 空态与生成中 ---------- */
.canvas-empty {
  text-align: center; color: #9FB0CB; padding: 40px 20px; max-width: 400px;
}
.ce-mark {
  width: 46px; height: 46px; margin: 0 auto 14px; border-radius: 4px;
  border: 1px solid rgba(201,214,234,.4); display: grid; place-items: center;
  font-family: var(--ff-serif); font-size: 22px; color: #C9D6EA;
}
.ce-title { font-family: var(--ff-serif); font-size: 16px; color: #D9E3F2; margin-bottom: 8px; }
.ce-sub { font-size: 12.5px; line-height: 1.8; }

.gen-overlay {
  position: absolute; inset: 0; background: rgba(16,35,63,.86);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 14px; border-radius: var(--radius-lg); z-index: 5;
}
.canvas-wrap { position: relative; }
.gen-stage { font-size: 13px; color: #C9D6EA; letter-spacing: .04em; }
.spin {
  width: 30px; height: 30px; border-radius: 50%;
  border: 2px solid rgba(201,214,234,.28); border-top-color: #C9D6EA;
  animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- 素材挑选网格 ---------- */
.picker-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.pcard {
  position: relative; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; cursor: pointer; background: var(--paper);
}
.pcard:hover { border-color: var(--indigo-500); }
.pcard.on { border-color: var(--cinnabar); box-shadow: 0 0 0 2px var(--cinnabar-soft); }
.pcard img { width: 100%; aspect-ratio: 1/1; object-fit: cover; display: block; }
.pcard-b { padding: 7px 8px 9px; font-size: 12px; color: var(--indigo-800); }
.pcard-b .small { font-size: 11px; }
.pcard-x {
  position: absolute; top: 6px; right: 6px; width: 20px; height: 20px; border-radius: 50%;
  background: var(--cinnabar); color: #fff; font-size: 12px; display: grid; place-items: center;
}

/* ---------- 提示词分段配色 ---------- */
.prompt-box.context { border-left: 3px solid var(--indigo-700); background: #F4F7FC; }
.prompt-box.craft { border-left: 3px solid var(--indigo-600); }

/* ---------- 出图卡片上的分数 ---------- */
.ok-t { color: var(--jade); }
.no-t { color: var(--cinnabar); }

/* ---------- 配置面板：高级设置折叠 ---------- */
.adv {
  margin-top: 8px; border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--paper-2); padding: 0 14px;
}
.adv > summary {
  cursor: pointer; padding: 11px 0; font-size: 13px; color: var(--indigo-700);
  font-weight: 600; list-style: none;
}
.adv > summary::-webkit-details-marker { display: none; }
.adv > summary::before { content: '▸ '; color: var(--ink-3); font-weight: 400; }
.adv[open] > summary::before { content: '▾ '; }
.adv-body { padding-bottom: 8px; }

#api-model optgroup { font-weight: 600; color: var(--indigo-700); }
#api-model option { font-weight: 400; color: var(--ink); }

/* ---------- 参考素材选择条 ---------- */
.refbar {
  display: flex; align-items: center; gap: 12px; padding: 12px 16px; margin-bottom: 18px;
  background: var(--indigo-100); border: 1px solid var(--line); border-radius: var(--radius);
  font-size: 13.5px; color: var(--indigo-800); flex-wrap: wrap;
}
.gcard { position: relative; }
.gcard.picked { border-color: var(--cinnabar); box-shadow: 0 0 0 2px var(--cinnabar-soft); }
.gcard-pick {
  position: absolute; right: 8px; bottom: 8px; border: 1px solid var(--line);
  background: rgba(255,255,255,.95); color: var(--indigo-700); font-size: 11.5px;
  padding: 3px 9px; border-radius: 999px; cursor: pointer; font-family: inherit;
}
.gcard-pick:hover { border-color: var(--indigo-500); }
.gcard-pick.on { background: var(--cinnabar); border-color: var(--cinnabar); color: #fff; }

/* ---------- 页脚 ---------- */
.footer { border-top: 1px solid var(--line); margin-top: 40px; padding: 30px 0 44px; }
.footer-in { display: flex; gap: 24px; flex-wrap: wrap; align-items: flex-start; justify-content: space-between; }
.footer .small { color: var(--ink-3); }

@media (max-width: 1080px) {
  .studio { grid-template-columns: 1fr; }
  .variants { grid-template-columns: repeat(4, 1fr); }
  .hero-grid { grid-template-columns: 1fr; gap: 34px; }
  .hero-art { justify-self: center; max-width: 420px; }
  .g4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  .h-xl { font-size: 30px; }
  .hero h1 { font-size: 32px; }
  .g2, .g3, .g4 { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .step { border-left: 0; padding: 14px 0; border-top: 1px solid var(--line); }
  .step:first-child { border-top: 0; }
  .craftflow { grid-template-columns: 1fr 1fr; }
  .modal-grid { grid-template-columns: 1fr; }
  .nav a { padding: 6px 9px; font-size: 13px; }
  .brand-sub { display: none; }
}