/* =========================================================
   TIDE LETTERS · 工坊 studio
   深色控制台 + 米色画布：像一间安静的印刷工作室
   只使用 tokens.css / base.css 的变量与组件
   ========================================================= */

/* ---------- 页头 ---------- */
.page--studio { padding-bottom: clamp(48px, 7vw, 96px); }

.studio-hero {
  padding-top: clamp(20px, 3.4vw, 48px);
  padding-bottom: clamp(18px, 2.4vw, 32px);
}
.studio-hero__top {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(280px, .6fr);
  align-items: end;
  gap: clamp(24px, 4.5vw, 72px);
}
.studio-hero__title {
  margin-top: var(--sp-4);
  max-width: 18ch;
}
.studio-hero__br { color: var(--accent-2); font-family: var(--font-serif); }
.studio-hero__lede { margin-top: var(--sp-5); max-width: 52ch; }
.studio-hero__side {
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
  padding-left: clamp(16px, 2vw, 28px);
  border-left: 1px solid var(--line);
  padding-bottom: var(--sp-2);
}
.studio-hero__quote {
  font-size: clamp(20px, 2.1vw, 28px);
  letter-spacing: .12em;
  color: var(--ink-2);
  line-height: 1.6;
}
.studio-hero__side .footnote { max-width: 30ch; }

.studio-hero__bar {
  margin-top: clamp(22px, 3vw, 40px);
  padding-top: var(--sp-5);
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  flex-wrap: wrap;
}

.studio-tabs { padding: 4px; }
.studio-tab {
  min-height: 42px;
  padding: 0 20px;
  font-family: var(--font-serif);
  font-size: 16px;
  letter-spacing: .14em;
  display: inline-flex;
  align-items: center;
  gap: 9px;
}
.studio-tab__en {
  font-family: var(--font-display);
  font-size: 9.5px;
  letter-spacing: .2em;
  opacity: .62;
  transform: translateY(1px);
}
.studio-tab.is-on .studio-tab__en { opacity: .92; }
.studio-quick {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  flex-wrap: wrap;
}
.studio-quick .link { font-size: var(--fs-sm); margin-right: var(--sp-2); }
.studio-quick .btn svg { width: 15px; height: 15px; }

/* ---------- 工作台网格 ---------- */
.studio-work { padding-block: clamp(18px, 2.4vw, 34px) clamp(52px, 7vw, 104px); }
.studio-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(0, .96fr);
  gap: clamp(28px, 4vw, 64px);
  align-items: start;
}
.studio-preview-col {
  position: sticky;
  top: calc(var(--nav-h) + 22px);
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}
.studio-controls-col { display: flex; flex-direction: column; gap: var(--sp-6); min-width: 0; }

/* ---------- 预览（深色衬板 + 米色画布） ---------- */
.studio-preview {
  --mat-bg: color-mix(in srgb, var(--ink) 94%, var(--bg));
  --mat-fg: color-mix(in srgb, var(--bg) 60%, var(--ink));
  --mat-line: color-mix(in srgb, var(--bg) 13%, transparent);
  position: relative;
  padding: 10px;
  border-radius: var(--r-md);
  border: 1px solid color-mix(in srgb, var(--ink) 36%, transparent);
  background: var(--mat-bg);
  box-shadow: var(--shadow-md);
}
:root[data-mode="night"] .studio-preview {
  --mat-bg: var(--bg-2);
  --mat-fg: var(--ink-3);
  --mat-line: var(--line);
  border-color: var(--line);
}
.studio-preview__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  padding: 6px 8px 11px;
  color: var(--mat-fg);
}
.studio-preview__label {
  font-family: var(--font-display);
  font-size: 10px;
  letter-spacing: .24em;
}
.studio-preview__meta { font-size: var(--fs-xs); letter-spacing: .04em; }
.studio-preview__frame {
  position: relative;
  border-radius: var(--r-xs);
  overflow: hidden;
  background: var(--bg-2);
  box-shadow: 0 0 0 1px var(--mat-line), 0 22px 50px -34px rgba(0, 0, 0, .55);
}
#cardCanvas {
  display: block;
  width: 100%;
  height: auto;
  transition: opacity var(--dur-mic) var(--ease), transform var(--dur-mid) var(--ease);
}
.studio-preview__frame.is-switching #cardCanvas {
  opacity: .38;
  transform: scale(.994);
}
.studio-preview__busy {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-3);
  background: color-mix(in srgb, var(--bg) 58%, transparent);
  backdrop-filter: blur(5px);
  color: var(--ink-2);
  font-size: var(--fs-sm);
  letter-spacing: .06em;
}
.studio-preview__spinner {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid var(--line-2);
  border-top-color: var(--accent);
  animation: studio-spin 800ms linear infinite;
}
@keyframes studio-spin { to { transform: rotate(360deg); } }
.studio-preview__under {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--sp-3);
  padding: 10px 8px 2px;
  flex-wrap: wrap;
}
.studio-preview__under .footnote { color: var(--mat-fg); }
.studio-preview__trunc { color: var(--mat-fg); opacity: .9; }
.studio-preview__tip { max-width: 54ch; }
.studio-preview__tip .is-off { display: none; }

/* ---------- 导出按钮区 ---------- */
.studio-actions {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  flex-wrap: wrap;
}
.studio-actions .btn { min-height: 46px; }
.studio-actions .btn svg { width: 16px; height: 16px; }
.studio-actions__hint {
  flex: 1 1 100%;
  font-size: var(--fs-xs);
  letter-spacing: .03em;
  color: var(--ink-3);
  min-height: 1.2em;
}
.studio-actions__hint.is-warn { color: var(--warn); }
.studio-actions__hint.is-ok { color: var(--ok); }

.btn.is-busy { pointer-events: none; opacity: .72; }
.btn.is-busy svg { animation: studio-spin 900ms linear infinite; }

/* ---------- 深色控制台 ---------- */
.press {
  --press-bg: color-mix(in srgb, var(--ink) 96%, var(--bg));
  --press-fg: var(--bg);
  --press-fg-2: color-mix(in srgb, var(--bg) 68%, var(--ink));
  --press-fg-3: color-mix(in srgb, var(--bg) 46%, var(--ink));
  --press-line: color-mix(in srgb, var(--bg) 15%, transparent);
  --press-line-2: color-mix(in srgb, var(--bg) 28%, transparent);
  --press-field: color-mix(in srgb, var(--bg) 7%, transparent);
  --press-accent: color-mix(in srgb, var(--accent-2) 62%, var(--bg));
  position: relative;
  background:
    radial-gradient(120% 80% at 88% -8%, color-mix(in srgb, var(--accent) 24%, transparent), transparent 62%),
    linear-gradient(158deg, color-mix(in srgb, var(--ink) 88%, var(--accent-2)) 0%, var(--press-bg) 46%, var(--press-bg) 100%);
  color: var(--press-fg);
  border: 1px solid color-mix(in srgb, var(--ink) 40%, transparent);
  border-radius: var(--r-lg);
  padding: clamp(18px, 2.6vw, 32px);
  box-shadow: var(--shadow-lg);
}
:root[data-mode="night"] .press {
  --press-bg: var(--bg-2);
  --press-fg: var(--ink);
  --press-fg-2: var(--ink-2);
  --press-fg-3: var(--ink-3);
  --press-line: var(--line);
  --press-line-2: var(--line-2);
  --press-field: color-mix(in srgb, var(--bg) 52%, transparent);
  --press-accent: var(--accent);
  background:
    radial-gradient(120% 80% at 88% -8%, color-mix(in srgb, var(--accent) 18%, transparent), transparent 62%),
    linear-gradient(158deg, var(--bg-2) 0%, var(--bg-2) 100%);
  border-color: var(--line);
}
.press__grip {
  position: absolute;
  top: 11px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 5px;
  pointer-events: none;
}
.press__grip span {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--press-line-2);
}
.press__block {
  padding-block: clamp(16px, 2vw, 24px);
  border-top: 1px solid var(--press-line);
}
.press__block:first-of-type { border-top: 0; padding-top: 10px; }
.press__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--sp-4);
  margin-bottom: var(--sp-4);
}
.press__title {
  font-family: var(--font-serif);
  font-size: 19px;
  font-weight: 400;
  letter-spacing: .14em;
  color: var(--press-fg);
  line-height: 1.3;
}
.press__no {
  font-size: 10.5px;
  letter-spacing: .22em;
  color: var(--press-fg-3);
  font-family: var(--font-display);
}
.press__row {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  flex-wrap: wrap;
  margin-top: var(--sp-4);
}
.press__row--between { justify-content: space-between; }
.press__row--wrap { flex-wrap: wrap; }
.press__row .footnote { margin: 0; max-width: 34ch; }
.press__grid2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--sp-3);
  margin-top: var(--sp-3);
}
.press__grid2--tight { margin-top: var(--sp-4); }

/* 控制台里的表单 */
.press .field__label { color: var(--press-fg-3); }
.press .input,
.press .textarea {
  background: var(--press-field);
  border-color: var(--press-line);
  color: var(--press-fg);
}
.press .input::placeholder,
.press .textarea::placeholder { color: color-mix(in srgb, var(--press-fg) 36%, transparent); }
.press .input:focus,
.press .textarea:focus {
  border-color: var(--press-accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--press-accent) 20%, transparent);
}
.press .textarea { font-family: var(--font-serif); font-size: 15px; line-height: 1.92; letter-spacing: .04em; }
.press__textarea { min-height: 140px; }
.press__textarea--letter { min-height: 200px; }
.press .press__date { color-scheme: dark; }
.press .footnote { color: var(--press-fg-3); }
.studio-count {
  font-size: 10.5px;
  letter-spacing: .1em;
  color: var(--press-fg-3);
  font-family: var(--font-mono);
}

/* 控制台里的按钮 / 分段控件 */
.press .btn--ghost {
  --btn-bg: var(--press-field);
  --btn-border: var(--press-line-2);
  --btn-fg: var(--press-fg);
}
.press .btn--ghost:hover {
  --btn-bg: color-mix(in srgb, var(--press-fg) 12%, transparent);
  border-color: var(--press-fg-3);
}
.press .btn--quiet { color: var(--press-fg-2); }
.press .btn--quiet:hover { color: var(--press-fg); background: color-mix(in srgb, var(--press-fg) 9%, transparent); }
.press .btn--primary {
  --btn-bg: var(--press-fg);
  --btn-fg: var(--press-bg);
  --btn-border: var(--press-fg);
}
.press .btn--primary:hover {
  --btn-bg: var(--press-accent);
  --btn-fg: var(--press-bg);
  --btn-border: var(--press-accent);
}
.press .segmented {
  border-color: var(--press-line);
  background: var(--press-field);
}
.press .segmented__item { color: var(--press-fg-3); }
.press .segmented__item:hover { color: var(--press-fg); }
.press .segmented__item.is-on { color: var(--press-bg); background: var(--press-fg); }
.studio-seg { width: 100%; }
.studio-seg .segmented__item { flex: 1; padding: 0 10px; min-height: 38px; }
.studio-seg--sm { width: auto; display: inline-flex; }
.studio-seg--sm .segmented__item { flex: 0 0 auto; min-height: 34px; padding: 0 13px; }
.segmented__item[disabled] { opacity: .32; pointer-events: none; }

/* 开关 */
.studio-toggles {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2) var(--sp-5);
  margin-top: var(--sp-4);
}
.studio-toggle {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  min-height: 40px;
  padding: 0 2px;
  cursor: pointer;
}
.studio-toggle__label {
  font-size: var(--fs-sm);
  letter-spacing: .05em;
  color: var(--press-fg-2);
  transition: color var(--dur-mic) var(--ease);
}
.studio-toggle[aria-pressed="true"] .studio-toggle__label { color: var(--press-fg); }
.press .switch { border-color: var(--press-line-2); background: var(--press-field); }
.press .switch::after { background: var(--press-fg-3); }
.press .switch[aria-checked="true"] { background: var(--press-accent); border-color: var(--press-accent); }
.press .switch[aria-checked="true"]::after { background: var(--press-bg); }
.studio-toggle:hover .switch { border-color: var(--press-fg-3); }

/* ---------- 站内搜索 ---------- */
.studio-search { position: relative; }
.studio-search__input { padding-left: 42px; padding-right: 40px; }
.studio-search__icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  display: grid;
  place-items: center;
  color: var(--press-fg-3);
  pointer-events: none;
}
.studio-search__icon svg { width: 17px; height: 17px; }
.studio-search__clear {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border-radius: var(--r-full);
  color: var(--press-fg-3);
  transition: color var(--dur-mic), background var(--dur-mic);
}
.studio-search__clear svg { width: 14px; height: 14px; }
.studio-search__clear:hover { color: var(--press-fg); background: var(--press-field); }
.studio-results {
  position: absolute;
  z-index: 9;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  max-height: 322px;
  overflow-y: auto;
  padding: 6px;
  border-radius: var(--r-sm);
  border: 1px solid var(--press-line-2);
  background: color-mix(in srgb, var(--press-bg) 94%, transparent);
  backdrop-filter: blur(16px) saturate(130%);
  box-shadow: var(--shadow-md);
}
.studio-result {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 1px 10px;
  width: 100%;
  padding: 9px 10px;
  border-radius: 6px;
  text-align: left;
  color: var(--press-fg-2);
  transition: background var(--dur-mic), color var(--dur-mic);
}
.studio-result:hover,
.studio-result.is-on {
  background: color-mix(in srgb, var(--press-fg) 10%, transparent);
  color: var(--press-fg);
}
.studio-result b {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: 14.5px;
  letter-spacing: .05em;
  color: var(--press-fg);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.studio-result span {
  grid-column: 1 / -1;
  font-size: 12px;
  color: var(--press-fg-3);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.studio-result em {
  font-style: normal;
  font-size: 9.5px;
  letter-spacing: .18em;
  color: var(--press-fg-3);
  font-family: var(--font-display);
}
.studio-results__group {
  padding: 8px 10px 4px;
  font-size: 9.5px;
  letter-spacing: .22em;
  color: var(--press-fg-3);
  font-family: var(--font-display);
  text-transform: uppercase;
}
.studio-results__empty {
  padding: 16px 12px;
  font-size: var(--fs-xs);
  color: var(--press-fg-3);
  line-height: 1.8;
}

/* 当前选中的来源 */
.studio-source {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  flex-wrap: wrap;
  min-height: 34px;
  margin-top: var(--sp-3);
}
.studio-source__empty { font-size: var(--fs-xs); color: var(--press-fg-3); }
.studio-source__tag {
  font-size: 9.5px;
  letter-spacing: .2em;
  padding: 3px 8px;
  border-radius: var(--r-xs);
  border: 1px solid var(--press-line-2);
  color: var(--press-fg-3);
  font-family: var(--font-display);
}
.studio-source__title {
  font-family: var(--font-serif);
  font-size: 15px;
  letter-spacing: .08em;
  color: var(--press-fg);
}
.studio-source__meta { font-size: var(--fs-xs); color: var(--press-fg-3); }
.studio-source__link {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: var(--fs-xs);
  color: var(--press-accent);
  letter-spacing: .04em;
}
.studio-source__link svg { width: 14px; height: 14px; }
.studio-source__link:hover { text-decoration: underline; text-underline-offset: 3px; }

/* ---------- 模板选择 ---------- */
.tpl-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--sp-2);
}
.tpl {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 7px;
  border-radius: var(--r-sm);
  border: 1px solid var(--press-line);
  background: var(--press-field);
  text-align: left;
  cursor: pointer;
  transition: transform var(--dur-mic) var(--ease), border-color var(--dur-mic) var(--ease),
              background var(--dur-mic) var(--ease);
}
.tpl:hover { transform: translateY(-1px); border-color: var(--press-line-2); }
.tpl.is-on {
  border-color: var(--press-accent);
  background: color-mix(in srgb, var(--press-accent) 14%, transparent);
}
.tpl:focus-visible { outline: 2px solid var(--press-accent); outline-offset: 2px; }
.tpl__swatch {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: 3px;
  border: 1px solid color-mix(in srgb, var(--press-fg) 16%, transparent);
  overflow: hidden;
}
.tpl__name {
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: .16em;
  color: var(--press-fg);
  line-height: 1.3;
  padding: 0 2px;
}
.tpl__en {
  font-family: var(--font-display);
  font-size: 8px;
  letter-spacing: .16em;
  color: var(--press-fg-3);
  padding: 0 2px 2px;
  line-height: 1.2;
}
.tpl.is-on .tpl__name { color: var(--press-accent); }
.tpl__check {
  position: absolute;
  top: 11px;
  right: 11px;
  width: 17px;
  height: 17px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--press-accent);
  color: var(--press-bg);
  opacity: 0;
  transform: scale(.7);
  transition: opacity var(--dur-mic) var(--ease), transform var(--dur-mic) var(--ease);
  pointer-events: none;
}
.tpl__check svg { width: 10px; height: 10px; }
.tpl.is-on .tpl__check { opacity: 1; transform: none; }

/* 纸样缩略图：用渐变模仿纹理，不用位图 */
.tpl__swatch--moon { background: radial-gradient(120% 100% at 22% 12%, #fbf7ee, #f0e8d8 62%, #e7dcc7); }
.tpl__swatch--moon::after {
  content: "";
  position: absolute;
  right: 15%;
  bottom: 16%;
  width: 15%;
  aspect-ratio: 1;
  background: #a4443c;
  border-radius: 1px;
  opacity: .8;
}
.tpl__swatch--deep { background: linear-gradient(165deg, #10283c, #081420 58%, #040b12); }
.tpl__swatch--deep::after,
.tpl__swatch--dusk::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 26% 30%, rgba(233, 238, 244, .9) 0 1px, transparent 1.4px),
    radial-gradient(circle at 62% 22%, rgba(233, 238, 244, .7) 0 1px, transparent 1.4px),
    radial-gradient(circle at 78% 54%, rgba(233, 238, 244, .55) 0 1px, transparent 1.4px),
    radial-gradient(circle at 42% 66%, rgba(233, 238, 244, .4) 0 1px, transparent 1.4px);
}
.tpl__swatch--dusk { background: linear-gradient(168deg, #3b2542, #4b2a44 52%, #6a3d54); }
.tpl__swatch--dusk::before {
  content: "";
  position: absolute;
  right: 18%;
  top: 20%;
  width: 22%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, #f6e7dd 0%, rgba(246, 231, 221, .2) 62%, transparent 72%);
}
.tpl__swatch--stationery {
  background-color: #fbf7ee;
  background-image: repeating-linear-gradient(180deg, transparent 0 5px, rgba(122, 108, 86, .28) 5px 6px);
}
.tpl__swatch--stationery::after {
  content: "";
  position: absolute;
  left: 16%;
  top: 0;
  bottom: 0;
  width: 1px;
  background: rgba(176, 90, 120, .45);
}
.tpl__swatch--rice {
  background-color: #f2ead8;
  background-image: repeating-linear-gradient(90deg, transparent 0 6px, rgba(125, 116, 96, .22) 6px 7px);
}
.tpl__swatch--rice::after {
  content: "";
  position: absolute;
  left: 14%;
  bottom: 14%;
  width: 13%;
  aspect-ratio: 1;
  background: #a4443c;
  border-radius: 1px;
  opacity: .78;
}
.tpl__swatch--minimal { background: linear-gradient(180deg, #f7f3ea, #f2ede1); }
.tpl__swatch--minimal::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 42%;
  width: 26%;
  height: 1px;
  background: rgba(35, 39, 44, .55);
  transform: translateX(-50%);
}

/* ---------- 二维码设置 ---------- */
.studio-qr {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  margin-top: var(--sp-3);
  transition: opacity var(--dur-mic) var(--ease);
}
.studio-qr.is-off { opacity: .42; pointer-events: none; }
.studio-qr .footnote { margin: 0; }

/* ---------- 侧边小卡 ---------- */
.studio-sidecard {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  padding: var(--sp-6);
  border: 1px dashed var(--line-2);
  border-radius: var(--r-md);
  background: color-mix(in srgb, var(--surface) 55%, transparent);
}
.studio-sidecard__text {
  font-size: clamp(17px, 1.7vw, 20px);
  line-height: 1.9;
  letter-spacing: .08em;
  color: var(--ink-2);
}
.studio-sidecard .footnote { margin: 0; line-height: 2; }

/* ---------- 情书存档 ---------- */
.studio-archive { padding-top: clamp(36px, 5vw, 80px); }
.letters-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--sp-5);
}
.letter-card {
  position: relative;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--surface);
  overflow: hidden;
  transition: transform var(--dur-mid) var(--ease), border-color var(--dur-mid) var(--ease),
              box-shadow var(--dur-mid) var(--ease);
}
.letter-card:hover { transform: translateY(-2px); border-color: var(--line-2); box-shadow: var(--shadow-sm); }
.letter-card__stripe { height: 4px; }
.letter-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  padding: 12px 18px;
  border-bottom: 1px solid var(--line);
}
.letter-card__tpl {
  font-family: var(--font-display);
  font-size: 9.5px;
  letter-spacing: .22em;
  color: var(--ink-3);
}
.letter-card__time { font-size: var(--fs-xs); color: var(--ink-3); }
.letter-card__body {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  padding: 18px;
  flex: 1;
}
.letter-card__to {
  font-family: var(--font-serif);
  font-size: var(--fs-h3);
  letter-spacing: .08em;
  line-height: 1.45;
}
.letter-card__excerpt {
  font-family: var(--font-serif);
  font-size: var(--fs-sm);
  line-height: 1.95;
  color: var(--ink-2);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  white-space: pre-line;
}
.letter-card__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-2);
  padding: 12px 18px;
  border-top: 1px solid var(--line);
}
.letter-card__from { font-family: var(--font-serif); font-size: var(--fs-xs); color: var(--ink-3); }
.letter-card__actions { display: flex; gap: 2px; }
.letter-card__actions .btn { min-height: 34px; }
.letter-card__actions svg { width: 15px; height: 15px; }
.letters-grid .empty { grid-column: 1 / -1; }

/* 纸样颜色条 */
.tpl-stripe--moon { background: linear-gradient(90deg, #f0e8d8, #a4443c); }
.tpl-stripe--deep { background: linear-gradient(90deg, #081420, #7cbbd2); }
.tpl-stripe--dusk { background: linear-gradient(90deg, #4b2a44, #e0aa70); }
.tpl-stripe--stationery { background: linear-gradient(90deg, #fbf7ee, #b05a78); }
.tpl-stripe--rice { background: linear-gradient(90deg, #f2ead8, #a4443c); }
.tpl-stripe--minimal { background: linear-gradient(90deg, #f7f3ea, #23272c); }

/* ---------- 出口 ---------- */
.studio-outro__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, .9fr);
  align-items: center;
  gap: clamp(24px, 5vw, 80px);
  padding-top: clamp(28px, 4vw, 52px);
  border-top: 1px solid var(--line);
}
.studio-outro__copy .lede { margin-top: var(--sp-3); }
.studio-outro__links { display: flex; flex-direction: column; }
.studio-outro__link {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--sp-3);
  width: 100%;
  padding: var(--sp-4) 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink-2);
  text-align: left;
  transition: color var(--dur-mic) var(--ease), padding var(--dur-mic) var(--ease);
}
.studio-outro__link:first-child { border-top: 1px solid var(--line); }
.studio-outro__link:hover { color: var(--accent); padding-left: var(--sp-2); }
.studio-outro__link .num { font-size: var(--fs-xs); color: var(--ink-3); letter-spacing: .12em; }
.studio-outro__link svg { width: 16px; height: 16px; }
.studio-outro__label {
  font-family: var(--font-serif);
  font-size: var(--fs-h4);
  letter-spacing: .1em;
}

/* ---------- 移动端导出条 ---------- */
.studio-dock { display: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 1120px) {
  .studio-grid { gap: clamp(22px, 3vw, 40px); }
  .letters-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 980px) {
  .studio-hero__top { grid-template-columns: minmax(0, 1fr); }
  .studio-hero__side { display: none; }
  .studio-grid { grid-template-columns: minmax(0, 1fr); }
  .studio-preview-col {
    position: static;
    max-width: 620px;
    margin-inline: auto;
    width: 100%;
  }
  .studio-actions { display: none; }
  .studio-work { padding-bottom: var(--sp-9); }
  .studio-outro__inner { grid-template-columns: minmax(0, 1fr); }
  .studio-dock {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: calc(var(--z-nav) + 2);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--sp-3);
    padding: 10px max(14px, env(safe-area-inset-right)) calc(10px + env(safe-area-inset-bottom)) max(14px, env(safe-area-inset-left));
    background: color-mix(in srgb, var(--surface-solid) 92%, transparent);
    backdrop-filter: blur(18px) saturate(140%);
    border-top: 1px solid var(--line);
  }
  .studio-dock__meta { display: flex; flex-direction: column; gap: 1px; min-width: 0; }
  .studio-dock__label { font-family: var(--font-serif); font-size: 15px; letter-spacing: .14em; }
  .studio-dock__hint { font-size: 10px; letter-spacing: .12em; color: var(--ink-3); }
  .studio-dock__actions { display: flex; gap: var(--sp-2); }
  .studio-dock .btn { min-height: 42px; padding: 0 16px; }
  body[data-page="studio"] { padding-bottom: calc(86px + env(safe-area-inset-bottom)); }
}
@media (max-width: 720px) {
  .studio-hero__title { max-width: none; }
  .studio-hero__bar { align-items: flex-start; flex-direction: column; gap: var(--sp-3); }
  .studio-quick { width: 100%; gap: var(--sp-1); }
  .studio-quick .link { flex: 1 1 100%; }
  .press { padding: 18px 16px; border-radius: var(--r-md); }
  .press__grid2 { grid-template-columns: minmax(0, 1fr); }
  .tpl-grid { gap: 7px; }
  .tpl { padding: 6px; }
  .tpl__name { font-size: 12px; letter-spacing: .1em; }
  .tpl__en { display: none; }
  .letters-grid { grid-template-columns: minmax(0, 1fr); }
  .studio-preview { padding: 8px; }
  .studio-preview__bar { padding: 5px 6px 9px; }
  .studio-preview__meta { font-size: 10.5px; }
  .studio-tab { padding: 0 16px; }
  .studio-source__link { margin-left: 0; }
  .studio-dock__hint { display: none; }
  .studio-preview__under { padding: 9px 6px 0; }
}
@media (max-width: 400px) {
  .studio-tabs { width: 100%; }
  .studio-tab { flex: 1; justify-content: center; padding: 0 10px; }
  .studio-tab__en { display: none; }
  .press { padding: 16px 13px; }
  .studio-seg .segmented__item { padding: 0 6px; font-size: 11px; }
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  .tpl:hover,
  .letter-card:hover { transform: none; }
  .studio-preview__frame.is-switching #cardCanvas { transform: none; opacity: .7; }
}