/* ==========================================================================
   portal.css — 首页门户
   ========================================================================== */

.portal {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 40px 120px;
}

/* ------------------------------------------------------------------ Hero */
.hero {
  padding: 84px 0 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 26px;
  padding: 0 11px 0 5px;
  border-radius: var(--r-pill);
  background: var(--surface);
  border: 1px solid var(--line-soft);
  box-shadow: var(--shadow-1);
  font-size: var(--fs-11);
  color: var(--ink-3);
  margin-bottom: 22px;
}

.hero-badge i {
  display: grid;
  place-items: center;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: linear-gradient(140deg, #7b61ff, #4f46e5);
  color: #fff;
}

.hero h1 {
  font-size: 36px;
  line-height: 1.28;
  font-weight: 600;
  letter-spacing: -0.025em;
  max-width: 720px;
}

.hero h1 em {
  font-style: normal;
  background: linear-gradient(96deg, #7b61ff 0%, #4f46e5 40%, #0ea5e9 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-sub {
  margin-top: 14px;
  font-size: var(--fs-14);
  color: var(--ink-3);
  max-width: 560px;
  line-height: 1.7;
}

/* --------------------------------------------------------------- Composer */
.composer-card {
  position: relative;
  width: min(800px, 100%);
  margin-top: 30px;
  padding: 14px 14px 10px;
  border-radius: 26px;
  background: var(--surface);
  border: 1px solid var(--line-soft);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.02), 0 12px 32px rgba(0, 0, 0, 0.06);
  text-align: left;
  transition: box-shadow 0.2s, border-color 0.2s;
}

.composer-card:focus-within {
  border-color: var(--line);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.02), 0 16px 44px rgba(0, 0, 0, 0.09);
}

html[data-theme="dark"] .composer-card {
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
}

.composer-attachments {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 2px 4px 10px;
}

.composer-attachments:empty {
  display: none;
}

.ref-chip {
  position: relative;
  width: 58px;
  height: 58px;
  border-radius: var(--r-md);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--surface-3);
}

.ref-chip img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.ref-chip button {
  position: absolute;
  top: 3px;
  right: 3px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.55);
  color: #fff;
  display: grid;
  place-items: center;
}

.ref-chip button svg {
  width: 10px;
  height: 10px;
  stroke-width: 2.4;
}

.composer-input {
  width: 100%;
  border: 0;
  outline: none;
  resize: none;
  background: transparent;
  font-size: var(--fs-14);
  line-height: 1.65;
  padding: 6px 8px 2px;
  min-height: 58px;
  color: var(--ink);
}

.composer-input::placeholder {
  color: var(--ink-faint);
}

.composer-bar {
  display: flex;
  align-items: center;
  gap: 4px;
  padding-top: 4px;
}

.composer-bar .spacer {
  flex: 1;
}

.composer-cost {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: var(--fs-12);
  color: var(--ink-faint);
  padding: 0 6px;
  font-variant-numeric: tabular-nums;
}

.composer-cost .spark {
  color: var(--brand);
  font-size: 12px;
}

.composer-send {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--accent-ink);
  display: grid;
  place-items: center;
  transition: transform 0.12s, opacity 0.15s, background 0.15s;
  flex: none;
}

.composer-send:hover {
  transform: scale(1.05);
}

.composer-send:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  transform: none;
}

.composer-send svg {
  width: 17px;
  height: 17px;
  stroke-width: 2;
}

.mode-pill {
  background: var(--surface-3);
  border-color: transparent;
  font-weight: 500;
}

.mode-pill:hover {
  background: var(--gray-4);
}

html[data-theme="dark"] .mode-pill {
  background: var(--surface-3);
}

.ratio-chip {
  width: 11px;
  height: 11px;
  border-radius: 2.5px;
  border: 1.4px solid currentColor;
  opacity: 0.55;
}

.quick-chips {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-top: 20px;
  max-width: 760px;
}

.quick-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 30px;
  padding: 0 13px;
  border-radius: var(--r-pill);
  background: var(--surface);
  border: 1px solid var(--line-soft);
  font-size: var(--fs-12);
  color: var(--ink-2);
  transition: transform 0.14s, box-shadow 0.18s, border-color 0.18s;
}

.quick-chip:hover {
  transform: translateY(-1px);
  border-color: var(--line);
  box-shadow: var(--shadow-1);
  color: var(--ink);
}

.quick-chip svg {
  width: 13px;
  height: 13px;
  color: var(--ink-faint);
  stroke-width: 1.8;
}

/* --------------------------------------------------------------- Section */
.section {
  margin-top: 76px;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.section-head h2 {
  font-size: 21px;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.section-head p {
  margin-top: 5px;
  font-size: var(--fs-12);
  color: var(--ink-faint);
}

.section-link {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: var(--fs-12);
  color: var(--ink-3);
  padding: 5px 4px;
  border-radius: var(--r-sm);
  transition: color 0.15s;
}

.section-link:hover {
  color: var(--ink);
}

.section-link svg {
  width: 13px;
  height: 13px;
  stroke-width: 2.2;
}

/* ------------------------------------------------------------ Featured */
.featured-stage {
  display: grid;
  grid-template-columns: 296px minmax(0, 1fr);
  gap: 14px;
}

.new-canvas-card {
  position: relative;
  min-height: 232px;
  border-radius: var(--r-xl);
  border: 1px solid var(--line-soft);
  background: var(--surface);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 20px;
  overflow: hidden;
  text-align: left;
  transition: transform 0.2s, box-shadow 0.25s, border-color 0.2s;
}

.new-canvas-card:hover {
  transform: translateY(-2px);
  border-color: var(--line);
  box-shadow: var(--shadow-2);
}

.new-canvas-card b {
  font-size: var(--fs-15);
  font-weight: 600;
  letter-spacing: -0.01em;
}

.new-canvas-card small {
  display: block;
  margin-top: 3px;
  font-size: var(--fs-12);
  color: var(--ink-faint);
}

.nc-core {
  position: relative;
  align-self: center;
  width: 100%;
  height: 92px;
  display: grid;
  place-items: center;
}

.nc-arcs {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
}

.nc-arcs path {
  fill: none;
  stroke: var(--line);
  stroke-width: 1.2;
  stroke-dasharray: 3 6;
  transition: stroke 0.3s;
}

.new-canvas-card:hover .nc-arcs path {
  stroke: var(--ink-faint);
}

.nc-plus {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: var(--ink);
  color: var(--bg-alt);
  display: grid;
  place-items: center;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.18);
  transition: transform 0.3s cubic-bezier(0.2, 0.9, 0.3, 1.4);
}

.new-canvas-card:hover .nc-plus {
  transform: rotate(90deg) scale(1.06);
}

.nc-plus svg {
  width: 20px;
  height: 20px;
  stroke-width: 2;
}

.nc-hint {
  font-size: var(--fs-11);
  color: var(--ink-faint);
  display: flex;
  align-items: center;
  gap: 5px;
}

.nc-hint kbd {
  font-family: var(--font);
  font-size: 10px;
  padding: 1px 5px;
  border-radius: 4px;
  border: 1px solid var(--line);
  color: var(--ink-3);
  background: var(--surface-2);
}

.featured-rail-wrap {
  position: relative;
  min-width: 0;
}

.featured-rail {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  padding-bottom: 4px;
  height: 100%;
}

.featured-rail::-webkit-scrollbar {
  display: none;
}

.feature-card {
  flex: none;
  display: flex;
  flex-direction: column;
  width: 176px;
  scroll-snap-align: start;
  border-radius: var(--r-lg);
  background: var(--surface);
  border: 1px solid var(--line-soft);
  overflow: hidden;
  text-align: left;
  transition: transform 0.18s, box-shadow 0.22s, border-color 0.18s;
}

.feature-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-2);
  border-color: var(--line);
}

.feature-card .fc-thumb {
  display: block;
  position: relative;
  aspect-ratio: 4 / 3.4;
  overflow: hidden;
  background: var(--surface-3);
}

.feature-card .fc-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s cubic-bezier(0.2, 0.8, 0.3, 1);
}

.feature-card:hover .fc-thumb img {
  transform: scale(1.04);
}

.feature-card .fc-body {
  display: block;
  padding: 10px 12px 13px;
}

.feature-card .fc-body b {
  display: block;
  font-size: var(--fs-13);
  font-weight: 500;
  letter-spacing: -0.005em;
}

.feature-card .fc-body small {
  display: block;
  margin-top: 2px;
  font-size: var(--fs-11);
  color: var(--ink-faint);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.rail-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-2);
  display: grid;
  place-items: center;
  color: var(--ink-2);
  z-index: 3;
  opacity: 0;
  transition: opacity 0.2s, background 0.15s;
}

.featured-rail-wrap:hover .rail-nav {
  opacity: 1;
}

.rail-nav:hover {
  background: var(--surface-3);
}

.rail-nav[disabled] {
  opacity: 0 !important;
  pointer-events: none;
}

.rail-nav svg {
  width: 15px;
  height: 15px;
  stroke-width: 2.2;
}

.rail-nav.prev { left: -10px; }
.rail-nav.next { right: -10px; }

/* --------------------------------------------------------- Inspiration */
#inspiration {
  margin-top: 112px;
}

.insp-head {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 0 12px;
  background: linear-gradient(var(--bg) 62%, transparent);
  backdrop-filter: blur(10px);
}

.insp-tabs {
  display: flex;
  gap: 2px;
  flex: none;
}

.insp-tab {
  height: 30px;
  padding: 0 12px;
  border-radius: var(--r-pill);
  font-size: var(--fs-12);
  color: var(--ink-3);
  transition: background 0.15s, color 0.15s;
  white-space: nowrap;
}

.insp-tab:hover {
  color: var(--ink);
  background: var(--surface-hover);
}

.insp-tab.is-active {
  background: var(--ink);
  color: var(--bg-alt);
  font-weight: 500;
}

.insp-search {
  position: relative;
  flex: 1;
  max-width: 300px;
  margin-left: auto;
}

.insp-search svg {
  position: absolute;
  left: 11px;
  top: 50%;
  transform: translateY(-50%);
  width: 14px;
  height: 14px;
  color: var(--ink-faint);
  stroke-width: 1.9;
  pointer-events: none;
}

.insp-search input {
  width: 100%;
  height: 32px;
  padding: 0 12px 0 32px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line-soft);
  background: var(--surface);
  font-size: var(--fs-12);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.insp-search input:focus {
  border-color: var(--ink-faint);
  box-shadow: 0 0 0 3px var(--brand-soft);
}

.insp-grid {
  column-count: 4;
  column-gap: 12px;
}

.insp-card {
  position: relative;
  break-inside: avoid;
  margin-bottom: 12px;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--surface-3);
  cursor: zoom-in;
  border: 1px solid var(--line-faint);
}

.insp-card img {
  width: 100%;
  display: block;
  transition: transform 0.6s cubic-bezier(0.2, 0.8, 0.3, 1);
}

.insp-card:hover img {
  transform: scale(1.03);
}

.insp-card-overlay {
  position: absolute;
  inset: 0;
  padding: 12px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 6px;
  background: linear-gradient(transparent 42%, rgba(0, 0, 0, 0.62));
  opacity: 0;
  transition: opacity 0.22s;
  color: #fff;
}

.insp-card:hover .insp-card-overlay {
  opacity: 1;
}

.insp-card-overlay p {
  font-size: var(--fs-11);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  color: rgba(255, 255, 255, 0.92);
}

.insp-card-overlay .meta {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 10px;
  color: rgba(255, 255, 255, 0.75);
}

.insp-card-overlay .meta i {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: linear-gradient(140deg, #ffb37b, #f2645a);
  flex: none;
}

.insp-empty {
  padding: 60px 0;
  text-align: center;
  color: var(--ink-faint);
  font-size: var(--fs-13);
}

/* 灵感详情弹窗 */
.insp-modal {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: grid;
  place-items: center;
  padding: 32px;
}

.insp-modal[hidden] {
  display: none;
}

.insp-mask {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.62);
  backdrop-filter: blur(6px);
}

.insp-modal-body {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 330px;
  width: min(1040px, 100%);
  max-height: calc(100vh - 64px);
  border-radius: var(--r-xl);
  overflow: hidden;
  background: var(--surface);
  box-shadow: var(--shadow-3);
  animation: dialog-in 0.24s cubic-bezier(0.2, 0.9, 0.3, 1);
}

.insp-figure {
  background: var(--surface-3);
  display: grid;
  place-items: center;
  overflow: hidden;
}

.insp-figure img {
  width: 100%;
  height: 100%;
  max-height: calc(100vh - 64px);
  object-fit: contain;
}

.insp-side {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  overflow-y: auto;
  border-left: 1px solid var(--line-soft);
}

.insp-side-head {
  display: flex;
  align-items: center;
  gap: 9px;
}

.insp-avatar {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: linear-gradient(140deg, #ffb37b, #f2645a);
  flex: none;
}

.insp-side-head b {
  font-size: var(--fs-13);
  font-weight: 500;
}

.insp-like {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  height: 28px;
  padding: 0 10px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line-soft);
  font-size: var(--fs-12);
  color: var(--ink-3);
}

.insp-like:hover {
  border-color: var(--line);
  color: var(--ink);
}

.insp-like svg {
  width: 13px;
  height: 13px;
}

.insp-like.is-on {
  color: #e0396b;
  border-color: rgba(224, 57, 107, 0.28);
  background: rgba(224, 57, 107, 0.07);
}

.insp-like.is-on svg {
  fill: currentColor;
}

.insp-close {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--ink-3);
  background: var(--surface-3);
}

.insp-close:hover {
  color: var(--ink);
}

.insp-close svg {
  width: 13px;
  height: 13px;
  stroke-width: 2.2;
}

.insp-meta {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: var(--fs-11);
  color: var(--ink-faint);
}

.insp-meta i {
  width: 2px;
  height: 2px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.6;
}

.prompt-block {
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  background: var(--surface-2);
  padding: 11px 12px;
}

.prompt-block .pb-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 6px;
}

.prompt-block .pb-head b {
  font-size: var(--fs-11);
  color: var(--ink-faint);
  font-weight: 500;
  letter-spacing: 0.02em;
}

.pb-copy {
  font-size: var(--fs-11);
  color: var(--ink-3);
  padding: 2px 6px;
  border-radius: 5px;
}

.pb-copy:hover {
  background: var(--surface-hover);
  color: var(--ink);
}

.prompt-block p {
  font-size: var(--fs-12);
  line-height: 1.65;
  color: var(--ink-2);
  max-height: 150px;
  overflow-y: auto;
}

.insp-params {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.param-tag {
  font-size: 10px;
  color: var(--ink-3);
  background: var(--surface-3);
  border-radius: 5px;
  padding: 3px 7px;
  font-variant-numeric: tabular-nums;
}

.para-tag-placeholder {
  display: none;
}

.insp-related {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.insp-related > b {
  font-size: var(--fs-11);
  font-weight: 500;
  color: var(--ink-faint);
}

.rel-row {
  display: flex;
  gap: 6px;
}

.rel-row button {
  flex: 1;
  aspect-ratio: 1;
  border-radius: var(--r-sm);
  overflow: hidden;
  border: 1px solid var(--line-soft);
  background: var(--surface-3);
  transition: transform 0.15s, border-color 0.15s;
}

.rel-row button:hover {
  transform: translateY(-1px);
  border-color: var(--line);
}

.rel-row img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.insp-actions {
  margin-top: auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  padding-top: 6px;
}

.insp-actions .btn {
  height: 34px;
}

/* ------------------------------------------------------------------ Dock */
.dock {
  position: fixed;
  left: calc(50% + var(--sidebar-w-collapsed) / 2);
  bottom: 22px;
  transform: translateX(-50%) translateY(20px);
  z-index: 90;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s, transform 0.3s cubic-bezier(0.2, 0.9, 0.3, 1);
  width: min(640px, calc(100vw - 120px));
}

body.sidebar-expanded .dock {
  left: calc(50% + var(--sidebar-w) / 2);
}

.dock.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.dock-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 50px;
  padding: 0 8px 0 10px;
  border-radius: var(--r-pill);
  background: var(--vibrancy-bg);
  backdrop-filter: var(--vibrancy);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-3);
}

.dock-pill .dock-add {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--surface-3);
  display: grid;
  place-items: center;
  color: var(--ink-2);
  flex: none;
}

.dock-pill input {
  flex: 1;
  border: 0;
  background: transparent;
  outline: none;
  font-size: var(--fs-13);
  min-width: 0;
  color: var(--ink);
}

.dock-pill input::placeholder {
  color: var(--ink-faint);
}

.dock-pill .dock-send {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--accent-ink);
  display: grid;
  place-items: center;
  flex: none;
}

.dock-full {
  background: var(--surface);
  border-radius: 22px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-3);
  padding: 12px 12px 8px;
}

.dock-full[hidden] {
  display: none;
}

/* ------------------------------------------------------------- 视觉打磨 */

/* Hero 光晕与品牌标 */
.hero {
  position: relative;
  isolation: isolate;
}

.hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: -150px;
  left: 50%;
  transform: translateX(-50%);
  width: 780px;
  height: 540px;
  background: radial-gradient(closest-side, rgba(110, 86, 248, 0.1), transparent 72%);
  pointer-events: none;
}

html[data-theme="dark"] .hero::before {
  background: radial-gradient(closest-side, rgba(141, 123, 255, 0.16), transparent 72%);
}

.hero-mark {
  width: 46px;
  height: 46px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  color: #fff;
  background: linear-gradient(140deg, #7b61ff, #4f46e5 55%, #1e1b4b);
  box-shadow: 0 8px 24px rgba(79, 70, 229, 0.32), inset 0 1px 0 rgba(255, 255, 255, 0.28);
  margin-bottom: 18px;
}

.hero-mark svg {
  width: 24px;
  height: 24px;
}

/* 输入框 */
.composer-card {
  padding: 12px 12px 10px;
}

.composer-bar .pill {
  height: 28px;
}

.composer-cost {
  height: 26px;
  padding: 0 9px;
  border-radius: var(--r-pill);
  background: var(--surface-3);
  color: var(--ink-2);
}

.composer-cost .spark {
  font-size: 11px;
}

.composer-send {
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.18);
}

.composer-send:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.24);
}

.chips-label {
  align-self: center;
  font-size: var(--fs-12);
  color: var(--ink-faint);
  margin-right: 2px;
}

/* 特色功能 */
.feature-card .fc-thumb::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(transparent 45%, rgba(0, 0, 0, 0.42));
  opacity: 0;
  transition: opacity 0.22s;
}

.feature-card:hover .fc-thumb::after {
  opacity: 1;
}

.feature-card .fc-use {
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: 10px;
  height: 26px;
  border-radius: var(--r-sm);
  background: rgba(255, 255, 255, 0.16);
  border: 1px solid rgba(255, 255, 255, 0.28);
  backdrop-filter: blur(8px);
  color: #fff;
  font-size: 11px;
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  opacity: 0;
  transform: translateY(5px);
  transition: opacity 0.2s, transform 0.2s;
  z-index: 2;
}

.feature-card:hover .fc-use {
  opacity: 1;
  transform: none;
}

.featured-rail-wrap::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 64px;
  height: 100%;
  background: linear-gradient(90deg, transparent, var(--bg) 88%);
  pointer-events: none;
  transition: opacity 0.2s;
}

.featured-rail-wrap.at-end::after {
  opacity: 0;
}

.new-canvas-card::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 62%;
  background: radial-gradient(60% 90% at 50% 100%, var(--brand-soft), transparent 72%);
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
}

.new-canvas-card:hover::before {
  opacity: 1;
}

.new-canvas-card:hover .nc-arcs path {
  animation: dash-flow 7s linear infinite;
}

@keyframes dash-flow {
  to {
    stroke-dashoffset: -160;
  }
}

/* 灵感 */
.insp-tab i {
  font-style: normal;
  font-size: 10px;
  margin-left: 5px;
  opacity: 0.55;
  font-variant-numeric: tabular-nums;
}

.insp-head.is-stuck {
  padding-top: 10px;
  padding-bottom: 10px;
  box-shadow: 0 1px 0 var(--line-soft);
}

.insp-card {
  transition: transform 0.22s, box-shadow 0.22s;
}

.insp-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-2);
}

.insp-card .card-use {
  position: absolute;
  right: 10px;
  bottom: 10px;
  height: 26px;
  padding: 0 10px;
  border-radius: var(--r-pill);
  background: rgba(255, 255, 255, 0.92);
  color: #1d1d1f;
  font-size: 11px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.2s, transform 0.2s;
  z-index: 3;
}

.insp-card:hover .card-use {
  opacity: 1;
  transform: none;
}

.card-use:hover {
  background: #fff;
}

/* ------------------------------------------------------------- Responsive */
@media (max-width: 1180px) {
  .insp-grid { column-count: 3; }
}

@media (max-width: 980px) {
  .portal { padding: 0 24px 100px; }
  .hero { padding-top: 56px; }
  .hero h1 { font-size: 30px; }
  .featured-stage { grid-template-columns: 1fr; }
  .new-canvas-card { min-height: 196px; }
  .nc-core { height: 66px; }
  .insp-grid { column-count: 2; }
  .insp-modal-body { grid-template-columns: 1fr; }
  .insp-figure img { max-height: 46vh; }
}

@media (max-width: 720px) {
  .portal { padding: 0 16px 90px; }
  .hero h1 { font-size: 25px; }
  .hero-sub { font-size: var(--fs-13); }
  .composer-card { border-radius: 20px; }
  .section { margin-top: 52px; }
  .section-head { flex-wrap: wrap; }
  .section-head h2 { font-size: 18px; }

  /* 窄屏：控件换行，避免「图片生成」被压成竖排 */
  .composer-bar { flex-wrap: wrap; row-gap: 6px; }
  .composer-bar .pill,
  .composer-bar .mode-pill { white-space: nowrap; }
  .composer-bar #modelBtn,
  .composer-bar #dockModel,
  .composer-bar .pill-sep { display: none; }
  .composer-bar .spacer { display: none; }
  .composer-cost { margin-left: auto; }

  .insp-head { flex-wrap: wrap; }
  .insp-search { max-width: none; order: 3; width: 100%; margin-left: 0; }
  .insp-grid { column-count: 2; column-gap: 8px; }
  .insp-card { margin-bottom: 8px; }
  .insp-modal { padding: 12px; }
  .dock { width: calc(100vw - 32px); left: 50% !important; }
}

/* 网站页脚（备案号） */
.site-footer {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 14px;
  padding: 26px 24px 40px;
  font-size: 13px;
  color: var(--ink-faint);
}

.site-footer a {
  color: var(--ink-faint);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--ink-2);
  text-decoration: underline;
}