:root {
  --bg: #f5f0e7;
  --surface: rgba(255, 251, 245, 0.6);
  --surface-strong: rgba(255, 252, 248, 0.82);
  --stroke: rgba(157, 128, 90, 0.16);
  --stroke-strong: rgba(145, 112, 72, 0.26);
  --text-main: #2d241d;
  --text-soft: #776558;
  --text-faint: #a08e80;
  --accent: #c89a66;
  --accent-deep: #8d6434;
  --accent-soft: rgba(184, 134, 75, 0.14);
  --shadow-xl: 0 42px 120px rgba(92, 64, 36, 0.14);
  --shadow-lg: 0 26px 72px rgba(108, 77, 43, 0.12);
  --shadow-md: 0 18px 42px rgba(108, 77, 43, 0.1);
  --radius-xl: 34px;
  --radius-lg: 26px;
  --radius-md: 20px;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text-main);
  background:
    radial-gradient(circle at 12% 16%, rgba(245, 216, 177, 0.54), transparent 28%),
    radial-gradient(circle at 88% 8%, rgba(255, 248, 239, 0.92), transparent 24%),
    radial-gradient(circle at 82% 82%, rgba(214, 187, 152, 0.34), transparent 24%),
    linear-gradient(180deg, #fbf7f1 0%, #f5efe6 48%, #efe6da 100%);
  overflow-x: hidden;
}
button, input { font: inherit; }
button {
  border: 0;
  background: none;
  padding: 0;
  cursor: pointer;
}
input { color: var(--text-main); }
input::placeholder { color: rgba(119,101,88,.62); }

.page-shell {
  position: relative;
  min-height: 100vh;
  padding: 28px;
  isolation: isolate;
}

.ambient,
.mesh-lines {
  position: fixed;
  inset: auto;
  pointer-events: none;
  z-index: -1;
}
.ambient {
  border-radius: 999px;
  filter: blur(12px);
  opacity: 0.76;
}
.ambient-a {
  width: 500px;
  height: 500px;
  top: -80px;
  left: -90px;
  background: radial-gradient(circle, rgba(236, 210, 177, 0.84), rgba(236, 210, 177, 0));
}
.ambient-b {
  width: 560px;
  height: 560px;
  right: -150px;
  top: 60px;
  background: radial-gradient(circle, rgba(255, 250, 242, 0.98), rgba(255, 250, 242, 0));
}
.ambient-c {
  width: 420px;
  height: 420px;
  right: 20%;
  bottom: -120px;
  background: radial-gradient(circle, rgba(206, 172, 129, 0.34), rgba(206, 172, 129, 0));
}
.ambient-d {
  width: 720px;
  height: 720px;
  left: 31%;
  top: 28%;
  background: radial-gradient(circle, rgba(255,246,236,.48), rgba(255,246,236,0));
}
.mesh-lines {
  inset: 0;
  background:
    linear-gradient(90deg, rgba(255,255,255,.12) 1px, transparent 1px),
    linear-gradient(rgba(255,255,255,.09) 1px, transparent 1px);
  background-size: 96px 96px;
  mask-image: radial-gradient(circle at center, black 16%, transparent 74%);
  opacity: .11;
}

.shell-container {
  max-width: 1480px;
  margin: 0 auto;
}

.glass-card,
.glass-soft,
.input-shell,
.file-card,
.list-row,
.sheet-item,
.toolbar-search {
  backdrop-filter: blur(28px) saturate(140%);
  -webkit-backdrop-filter: blur(28px) saturate(140%);
}
.glass-card {
  background: linear-gradient(180deg, rgba(255,251,245,.72), rgba(250,243,234,.48));
  border: 1px solid rgba(255,255,255,.56);
  box-shadow: var(--shadow-xl), inset 0 1px 0 rgba(255,255,255,.72);
}
.glass-soft {
  background: linear-gradient(180deg, rgba(255,251,246,.62), rgba(250,243,236,.42));
  border: 1px solid rgba(255,255,255,.48);
  box-shadow: var(--shadow-md), inset 0 1px 0 rgba(255,255,255,.68);
}

.app-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.32fr) 420px;
  gap: 26px;
  align-items: start;
}
.workspace-side,
.login-side { min-width: 0; }

.workspace-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 6px 8px 18px;
}
.brand-lockup {
  display: flex;
  align-items: center;
  gap: 14px;
}
.brand-icon {
  width: 52px;
  height: 52px;
  border-radius: 18px;
  background:
    radial-gradient(circle at 30% 28%, rgba(255,255,255,.96), rgba(255,255,255,0) 42%),
    linear-gradient(135deg, #f0d7b0, #c79a61 56%, #9b6a38);
  box-shadow: 0 18px 34px rgba(153, 106, 56, 0.24), inset 0 1px 0 rgba(255,255,255,.84);
  position: relative;
}
.brand-icon::after {
  content: "";
  position: absolute;
  inset: 10px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.34);
}
.brand-lockup strong,
.login-copy h1,
.section-head h2,
.hero-band h2,
.storage-ring-core strong {
  letter-spacing: -0.035em;
}
.brand-lockup strong {
  display: block;
  font-size: 19px;
}
.brand-lockup span {
  display: block;
  margin-top: 3px;
  font-size: 13px;
  color: var(--text-soft);
}
.header-actions,
.hero-actions,
.toolbar-segments,
.quick-actions,
.section-actions,
.form-meta,
.login-footer {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.ghost-btn,
.primary-mini,
.hero-action,
.segment-btn,
.text-btn,
.secondary-action,
.account-pill,
.status-chip,
.check-chip,
.sheet-close,
.toggle-password,
.nav-item,
.file-card,
.timeline-item,
.metric-card,
.list-row,
.btn-login {
  transition: transform .22s ease, box-shadow .22s ease, background .22s ease, border-color .22s ease, color .22s ease, opacity .22s ease;
}
.ghost-btn,
.primary-mini,
.hero-action,
.segment-btn,
.text-btn,
.secondary-action,
.account-pill,
.status-chip,
.check-chip,
.sheet-close,
.toggle-password {
  height: 42px;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid var(--stroke);
  background: rgba(255,250,244,.58);
  color: var(--text-main);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.72);
}
.primary-mini,
.hero-action.primary,
.btn-login {
  background: linear-gradient(135deg, #d7b07c, #b8874f 56%, #916437);
  color: #fffaf4;
  border-color: rgba(141, 100, 52, .28);
  box-shadow: 0 20px 42px rgba(141, 100, 52, .22), inset 0 1px 0 rgba(255,255,255,.24);
}
.ghost-btn:hover,
.primary-mini:hover,
.hero-action:hover,
.segment-btn:hover,
.text-btn:hover,
.secondary-action:hover,
.account-pill:hover,
.status-chip:hover,
.check-chip:hover,
.sheet-close:hover,
.toggle-password:hover,
.nav-item:hover,
.file-card:hover,
.timeline-item:hover,
.metric-card:hover,
.list-row:hover,
.btn-login:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 38px rgba(108, 77, 43, 0.14), inset 0 1px 0 rgba(255,255,255,.78);
}

.workspace-frame {
  display: grid;
  grid-template-columns: 214px minmax(0, 1fr);
  gap: 16px;
  padding: 16px;
  border-radius: 36px;
}
.sidebar,
.toolbar,
.hero-band,
.metric-card,
.file-board,
.storage-card,
.activity-board,
.login-card,
.sheet,
.toast {
  border-radius: var(--radius-lg);
}
.sidebar {
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 100%;
}
.nav-item {
  display:flex; align-items:center;
  justify-content: flex-start;
  text-align: left;
  height: 48px;
  padding: 0 16px;
  border-radius: 16px;
  color: var(--text-soft);
}
.nav-item.active,
.segment-btn.active,
.account-pill.active,
.check-chip.active {
  background: rgba(255,252,248,.9);
  color: var(--text-main);
  border-color: rgba(145,112,72,.18);
  box-shadow: 0 12px 28px rgba(108, 77, 43, 0.10), inset 0 1px 0 rgba(255,255,255,.84);
}

.workspace-main {
  display: grid;
  gap: 16px;
  min-width: 0;
}
.toolbar,
.hero-band {
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  padding: 14px;
}
.toolbar-search {
  display:flex; align-items:center; gap:12px;
  min-width: 260px;
  flex: 1;
  border: 1px solid rgba(255,255,255,.5);
  padding: 0 16px;
  height: 54px;
  border-radius: 18px;
  background: rgba(255,252,248,.58);
}
.search-icon {
  width: 16px; height: 16px; border: 2px solid rgba(119,101,88,.7); border-radius: 50%; position: relative; display:inline-block;
}
.search-icon::after { content:""; position:absolute; width:8px; height:2px; background: rgba(119,101,88,.7); right:-7px; bottom:-2px; transform: rotate(40deg); border-radius:999px; }
.toolbar-search input { border:0; background: transparent; outline:none; width:100%; }
.segment-btn, .text-btn { display:flex; align-items:center; justify-content:center; }
.segment-btn { min-width: 74px; }
.hero-band { padding: 28px 28px 24px; min-height: 156px; background: linear-gradient(135deg, rgba(255,253,249,.54), rgba(246,236,225,.38)); border: 1px solid rgba(255,255,255,.48); box-shadow: inset 0 1px 0 rgba(255,255,255,.78), 0 24px 60px rgba(116, 85, 49, .08); }
.hero-copy { max-width: 520px; position:relative; z-index:2; }
.hero-label {
  display:inline-flex; align-items:center; justify-content:center;
  height: 28px; padding: 0 11px; border-radius: 999px;
  background: rgba(255,250,244,.74); border: 1px solid rgba(145,112,72,.14);
  color: rgba(88,66,48,.68); font-size: 11px; letter-spacing: .12em; text-transform: uppercase;
}
.hero-band h2 {
  margin: 14px 0 0;
  font-size: clamp(20px, 1.7vw, 29px);
  line-height: 1.18;
  font-weight: 600;
  letter-spacing: -.03em;
  max-width: 520px;
}
.hero-glow {
  position:absolute; right:-10px; top:-52px; width: 420px; height: 300px; border-radius:50%;
  background: radial-gradient(circle at 40% 50%, rgba(255, 230, 201, 0.88), rgba(235, 194, 143, 0.22) 34%, rgba(238, 211, 176, 0) 72%);
  filter: blur(8px);
  opacity: .95;
}
.hero-action { display:flex; align-items:center; justify-content:center; min-width:110px; position: relative; z-index: 2; }
.overview-grid {
  display:grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 12px;
}
.metric-card {
  padding: 16px 18px; text-align:left; border:1px solid rgba(255,255,255,.46); background: linear-gradient(180deg, rgba(255,253,249,.62), rgba(247,239,230,.42));
}
.metric-card span, .storage-ring-core span, .input-label, .login-copy p, .section-head.compact .text-btn, .storage-legend span, .timeline-item small, .list-cell, .file-card small { color: var(--text-soft); }
.metric-card strong { display:block; font-size: 24px; margin: 8px 0 4px; letter-spacing:-.04em; }
.metric-card small { display:block; }
.content-grid {
  display:grid; grid-template-columns: minmax(0, 1.36fr) 320px; gap: 14px;
}
.file-board, .storage-card, .activity-board { padding: 16px; }
.section-head { display:flex; align-items:center; justify-content:space-between; gap:12px; margin-bottom: 16px; }
.section-head h2 { margin:0; font-size: 18px; letter-spacing: -.02em; }
.section-head.compact { margin-bottom: 14px; }
.file-grid {
  display:grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 10px; margin-bottom: 12px;
}
.file-card {
  display:flex; flex-direction:column; align-items:flex-start; justify-content:flex-end; gap:8px;
  min-height: 120px; padding: 15px; text-align:left; border-radius: 22px;
  background: linear-gradient(180deg, rgba(255,253,249,.72), rgba(247,238,228,.42));
  border: 1px solid rgba(255,255,255,.48);
}
.file-card.highlight {
  background: linear-gradient(180deg, rgba(235, 219, 199, 0.82), rgba(205, 173, 133, 0.48));
}
.file-icon {
  width: 44px; height: 44px; border-radius: 14px; display:block;
  background: linear-gradient(135deg, rgba(255,255,255,.82), rgba(218,192,160,.68));
  box-shadow: inset 0 1px 0 rgba(255,255,255,.74);
}
.file-icon.image { background: linear-gradient(135deg, rgba(255,255,255,.82), rgba(210,183,145,.68)); }
.file-icon.video { background: linear-gradient(135deg, rgba(255,255,255,.82), rgba(186,154,113,.68)); }
.file-icon.secure { background: linear-gradient(135deg, rgba(255,255,255,.82), rgba(160,118,72,.78)); }
.file-card strong { font-size: 17px; }
.list-table { display:grid; gap: 10px; }
.list-row {
  display:grid; grid-template-columns: minmax(0,1.6fr) 120px 88px; gap: 10px; align-items:center;
  min-height: 58px; padding: 0 16px; text-align:left; border-radius: 18px;
  background: rgba(255,252,248,.58); border: 1px solid rgba(255,255,255,.46);
}
.list-cell.name { display:flex; align-items:center; gap:10px; min-width:0; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.mini-dot, .legend-dot, .timeline-dot {
  display:inline-block; width:10px; height:10px; border-radius:999px; background:#b8864b; flex:none;
}
.mini-dot.img, .legend-dot.img { background:#c79a61; }
.mini-dot.zip { background:#8d6434; }
.legend-dot.vid { background:#a87744; }
.side-stack { display:grid; gap: 16px; }
.storage-ring-wrap { display:grid; gap: 16px; }
.storage-ring {
  width: 184px; height: 184px; margin: 0 auto; border-radius:50%; padding:14px;
  background: conic-gradient(#b8864b 0 68%, rgba(184,134,75,.16) 68% 100%);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.74), 0 20px 38px rgba(108, 77, 43, 0.12);
}
.storage-ring-core {
  width:100%; height:100%; border-radius:50%; background: linear-gradient(180deg, rgba(255,252,248,.94), rgba(246,237,228,.82));
  display:flex; align-items:center; justify-content:center; flex-direction:column;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.8);
}
.storage-ring-core strong { font-size: 34px; }
.storage-legend { display:grid; gap: 10px; }
.timeline { display:grid; gap: 10px; }
.timeline-item {
  display:flex; align-items:flex-start; gap: 12px; text-align:left; padding: 14px 14px; border-radius: 18px;
  background: rgba(255,252,248,.54); border:1px solid rgba(255,255,255,.42);
}
.timeline-item strong { display:block; margin-bottom: 4px; }
.timeline-dot { width: 12px; height: 12px; margin-top: 5px; }

.login-card {
  padding: 22px;
  position: sticky;
  top: 28px;
}
.login-top, .sheet-head { display:flex; align-items:center; justify-content:space-between; gap:14px; }
.logo-orb {
  width: 68px; height: 68px; border-radius: 22px; position:relative;
  background: linear-gradient(135deg, #f3dbc1, #c9975d 58%, #8e5f33);
  box-shadow: 0 18px 34px rgba(141, 100, 52, .24), inset 0 1px 0 rgba(255,255,255,.7);
}
.logo-orb span {
  position:absolute; inset: 14px; border-radius: 16px; border: 1px solid rgba(255,255,255,.34);
}
.status-chip { display:flex; align-items:center; gap:8px; }
.status-chip span {
  width:8px; height:8px; display:inline-block; border-radius:999px; background:#b8864b; box-shadow: 0 0 0 6px rgba(184,134,75,.12);
}
.login-copy { padding: 20px 0 8px; }
.login-copy h1 { margin: 0 0 8px; font-size: clamp(28px, 3vw, 38px); line-height:1.04; letter-spacing: -.03em; }
.login-copy p { margin:0; font-size: 15px; }
.login-form { display:grid; gap: 12px; }
.input-label { font-size: 13px; margin-top: 4px; }
.input-shell {
  height: 56px; display:flex; align-items:center; gap: 12px; padding: 0 16px;
  border-radius: 18px; background: rgba(255,252,248,.58); border:1px solid rgba(255,255,255,.48);
}
.input-shell input { width:100%; border:0; background: transparent; outline:none; }
.password-shell { padding-right: 8px; }
.toggle-password { height: 38px; padding:0 14px; }
.btn-login {
  position: relative; display:flex; align-items:center; justify-content:center; gap:10px;
  width:100%; height: 58px; border-radius: 20px; font-weight:600; margin-top: 6px;
}
.btn-spinner {
  width: 18px; height: 18px; border-radius:50%; border:2px solid rgba(255,255,255,.36); border-top-color:#fff; display:none;
}
.btn-login.loading .btn-spinner { display:inline-block; animation: spin .8s linear infinite; }
.btn-login.loading .btn-label { opacity: .94; }
.secondary-action, .account-pill, .check-chip { display:flex; align-items:center; justify-content:center; }
.secondary-action { flex:1; min-width: 0; }
.login-footer { margin-top: 14px; }
.account-pill { min-width: 110px; }

.overlay {
  position: fixed; inset: 0; background: rgba(53,39,27,.12); backdrop-filter: blur(4px); opacity: 0; visibility:hidden; transition: .24s ease; z-index: 30;
}
.overlay.show { opacity: 1; visibility: visible; }
.sheet {
  position: fixed; right: 28px; bottom: 28px; width: min(420px, calc(100vw - 32px)); padding: 18px; z-index: 40;
  transform: translateY(18px) scale(.98); opacity: 0; visibility:hidden; transition: .24s ease;
}
.sheet.show { transform: translateY(0) scale(1); opacity:1; visibility:visible; }
.sheet-head strong { display:block; font-size: 20px; }
.sheet-head span { display:block; font-size: 13px; color: var(--text-soft); margin-top: 3px; }
.sheet-body { display:grid; gap: 10px; margin-top: 16px; }
.sheet-item {
  display:flex; align-items:center; justify-content:space-between; gap:16px; padding: 14px; border-radius: 18px;
  background: rgba(255,252,248,.58); border: 1px solid rgba(255,255,255,.44);
}
.sheet-item strong { display:block; }
.sheet-item span { display:block; margin-top: 4px; color: var(--text-soft); font-size: 13px; }
.sheet-badge {
  display:inline-flex; align-items:center; justify-content:center; min-width: 56px; height: 28px; padding:0 10px; border-radius:999px;
  background: rgba(184,134,75,.12); color: var(--accent-deep); font-size: 12px;
}
.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translate(-50%, 18px);
  padding: 14px 18px; z-index: 45; opacity:0; visibility:hidden; transition: .24s ease;
  background: linear-gradient(180deg, rgba(255,253,250,.84), rgba(247,239,230,.72));
}
.toast.show { opacity:1; visibility:visible; transform: translate(-50%, 0); }

@keyframes spin { to { transform: rotate(360deg); } }

@media (max-width: 1200px) {
  .app-panel { grid-template-columns: 1fr; }
  .login-card { position: relative; top: 0; }
}
@media (max-width: 980px) {
  .workspace-frame, .content-grid { grid-template-columns: 1fr; }
  .sidebar { display:grid; grid-template-columns: repeat(4, minmax(0,1fr)); }
  .file-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
}
@media (max-width: 720px) {
  .page-shell { padding: 14px; }
  .workspace-header, .toolbar, .hero-band, .section-head, .sheet-head { flex-direction: column; align-items: stretch; }
  .sidebar { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .overview-grid, .file-grid { grid-template-columns: 1fr; }
  .list-row { grid-template-columns: minmax(0,1fr) 88px 64px; font-size: 13px; }
  .content-grid { gap: 14px; }
  .sheet { right: 14px; bottom: 14px; }
}

.hero-sheen {
  position:absolute; right: 86px; top: 18px; width: 220px; height: 220px; border-radius:50%;
  background: radial-gradient(circle, rgba(255,255,255,.92), rgba(255,255,255,0) 62%);
  filter: blur(18px);
  opacity: .7;
}
.hero-flare {
  position:absolute; right: 24px; bottom: -18px; width: 360px; height: 160px; border-radius: 999px;
  background: linear-gradient(90deg, rgba(255,255,255,0), rgba(255,245,229,.46), rgba(255,255,255,0));
  transform: rotate(-10deg);
  filter: blur(14px);
  opacity: .9;
}
.hero-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(255,255,255,0) 22%, rgba(255,255,255,.26) 48%, rgba(255,255,255,0) 68%);
  transform: translateX(-120%) skewX(-18deg);
  animation: sheenSweep 8s ease-in-out infinite;
  opacity: .72;
}

.glass-card,
.glass-soft {
  box-shadow: inset 0 1px 0 rgba(255,255,255,.82), 0 24px 70px rgba(113, 82, 49, .08);
}
.logo-orb::after {
  content: "";
  position: absolute;
  inset: -18px;
  border-radius: 28px;
  background: radial-gradient(circle, rgba(255,236,212,.42), rgba(255,236,212,0) 68%);
  filter: blur(10px);
  z-index: -1;
}
@keyframes sheenSweep {
  0%, 100% { transform: translateX(-120%) skewX(-18deg); opacity: 0; }
  18% { opacity: .55; }
  50% { transform: translateX(120%) skewX(-18deg); opacity: .78; }
  75% { opacity: 0; }
}