/* ── TOKENS ── */
    :root {
      /* ── 溫暖色系：與 index.html 一致 ── */
      --void:       #f2ede4;
      --surface:    #e8e0d4;
      --card:       #ede6db;
      --border:     rgba(30,46,48,.10);
      --border-md:  rgba(30,46,48,.18);
      --silver:     #4a6068;
      --silver-dim: rgba(74,96,104,.5);
      --gold:       #a07840;
      --gold-dim:   rgba(160,120,64,.35);
      --gold-glow:  rgba(160,120,64,.08);
      --green:      #3a7848;
      --green-dim:  rgba(58,120,72,.25);
      --green-glow: rgba(58,120,72,.08);
      --pine:       #2a5838;
      --mist:       #1e5060;
      --ink:        #1e2e30;
      --ink-dim:    rgba(30,46,48,.5);
      --nav-bg:     rgba(242,237,228,.92);
      --radius:     2px;
      --mono:       'Share Tech Mono', monospace;
      --serif:      'Cormorant Garamond', serif;
      --sans:       'Noto Sans TC', sans-serif;
    }

    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    button {
      appearance: none; -webkit-appearance: none; -moz-appearance: none;
      font-family: inherit;
    }

    html, body {
      min-height: 100vh;
      background: var(--void);
      color: var(--ink);
      font-family: var(--sans);
      font-weight: 300;
      overflow-x: hidden;
    }

    /* ── NAV ── */
    .nav {
      position: fixed; top: 0; left: 0; right: 0; z-index: 100;
      background: var(--nav-bg);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border);
    }
    .nav-inner-peak {
      max-width: 960px; margin: 0 auto; padding: 0 24px;
      height: 54px; display: flex; align-items: center; justify-content: space-between;
    }
    .nav-links-peak {
      display: flex; gap: 28px; list-style: none; align-items: center;
    }
    .nav-links-peak a {
      font-size: 13px; letter-spacing: 1.5px; text-transform: uppercase;
      color: var(--silver-dim); text-decoration: none; transition: color .3s;
    }
    .nav-links-peak a:hover { color: var(--silver); }
    .nav-peak-active { color: var(--gold) !important; }
    @media(max-width:600px){ .nav-links-peak { display: none; } }

    /* ── 深海下拉選單 ── */
    .nav-dropdown{ position:relative; }
    .nav-dropdown-trigger{ display:flex; align-items:center; gap:4px; }
    .nav-dropdown-arrow{ font-size:10px; transition:transform .2s; display:inline-block; }
    .nav-dropdown:hover .nav-dropdown-arrow{ transform:rotate(180deg); }
    .nav-dropdown-menu{
      position:absolute; top:calc(100% + 14px); left:50%; transform:translateX(-50%);
      background:var(--card); border:1px solid var(--border-md);
      min-width:150px; padding:8px 0;
      opacity:0; visibility:hidden; transform:translateX(-50%) translateY(-6px);
      transition:opacity .2s ease, transform .2s ease, visibility .2s;
      box-shadow:0 12px 28px rgba(30,46,48,.12);
      z-index:150;
    }
    .nav-dropdown:hover .nav-dropdown-menu{
      opacity:1; visibility:visible; transform:translateX(-50%) translateY(0);
    }
    .nav-dropdown-menu a{
      display:block; padding:9px 20px;
      font-size:12px; letter-spacing:1.2px; white-space:nowrap;
      color:var(--silver-dim); text-decoration:none; transition:background .15s,color .15s;
    }
    .nav-dropdown-menu a:hover{ background:var(--gold-glow); color:var(--ink); }

    /* lang switcher */
    .lang-select {
      background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%234a6068' opacity='.6'/%3E%3C/svg%3E") no-repeat right 8px center;
      background-color: transparent;
      border: 1px solid var(--border-md);
      color: var(--silver); font-family: var(--sans); font-size: 13px;
      letter-spacing: 1.5px; padding: 5px 28px 5px 10px; cursor: pointer;
      appearance: none; -webkit-appearance: none;
      outline: none; transition: border-color .2s;
    }
    .lang-select:hover { border-color: var(--gold-dim); color: var(--gold); }
    .lang-select option { background: var(--surface); color: var(--ink); }

    /* login btn */
    .btn-login {
      background: none; border: 1px solid var(--gold-dim);
      color: var(--gold); font-family: var(--sans); font-size: 13px;
      letter-spacing: 2px; padding: 6px 16px; cursor: pointer;
      transition: background .2s, border-color .2s;
      text-transform: uppercase;
    }
    .btn-login:hover { background: var(--gold-glow); border-color: var(--gold); }

    .btn-register {
      background: none; border: 1px solid var(--gold-dim);
      color: var(--gold); font-family: var(--sans); font-size: 13px;
      letter-spacing: 2px; padding: 6px 16px; cursor: pointer;
      transition: background .2s, border-color .2s;
      text-transform: uppercase;
    }
    .btn-register:hover { background: var(--gold-glow); border-color: var(--gold); }

    .nav-cta {
      background: var(--gold-glow); border: 1px solid var(--gold-dim);
      color: var(--gold); font-family: var(--sans); font-size: 13px;
      letter-spacing: 2px; padding: 6px 16px; text-decoration: none;
      transition: background .2s, border-color .2s;
      text-transform: uppercase;
    }
    .nav-cta:hover { background: transparent; border-color: var(--gold); }

    /* ── MAIN LAYOUT ── */
    .stage {
      min-height: 100vh;
      display: flex; flex-direction: column;
      align-items: center; justify-content: center;
      padding: 80px 24px 200px;
      position: relative;
    }

    /* ── CENTER STAGE ── */
    .center-stage {
      position: relative; display: flex;
      align-items: center; justify-content: center;
      width: 340px; height: 340px;
    }

    /* SVG 等高線 */
    .contour-svg {
      position: absolute; inset: 0;
      width: 100%; height: 100%;
      transition: opacity .6s ease;
    }
    .contour-svg {
      overflow: hidden;
      border-radius: 50%;
    }
    .contour-ring {
      fill: var(--void);
      stroke: var(--pine);
      stroke-width: .5;
      opacity: .20;
      transform-origin: center;
    }
    .contour-ring:nth-child(3)  { opacity: .26; fill: rgba(242,237,228,.96); }
    .contour-ring:nth-child(4)  { opacity: .32; fill: rgba(242,237,228,.92); }
    .contour-ring:nth-child(5)  { opacity: .38; fill: rgba(242,237,228,.88); }
    .contour-ring:nth-child(6)  { opacity: .44; fill: rgba(242,237,228,.84); }
    .contour-ring:nth-child(7)  { opacity: .50; fill: rgba(242,237,228,.80); }
    .contour-ring:nth-child(8)  { opacity: .56; fill: rgba(242,237,228,.76); }
    .contour-ring:nth-child(9)  { opacity: .62; fill: rgba(242,237,228,.72); }
    .contour-ring.pulse {
      animation: contourPulse 5s ease-in-out infinite;
    }
    .contour-ring:nth-child(3) { animation-delay: .5s; }
    .contour-ring:nth-child(4) { animation-delay: 1.0s; }
    .contour-ring:nth-child(5) { animation-delay: 1.5s; }
    .contour-ring:nth-child(6) { animation-delay: 2.0s; }
    .contour-ring:nth-child(7) { animation-delay: 2.5s; }
    .contour-ring:nth-child(8) { animation-delay: 3.0s; }
    .contour-ring:nth-child(9) { animation-delay: 3.5s; }

    @keyframes contourPulse {
      0%, 100% { opacity: inherit; transform: translateY(0); }
      50%       { opacity: .42; transform: scale(1.018); }
    }

    /* 外圈進度環 */
    .progress-ring {
      position: absolute; inset: -8px;
      width: calc(100% + 16px); height: calc(100% + 16px);
      transform: rotate(-90deg);
    }
    .progress-track {
      fill: none; stroke: var(--border); stroke-width: 1;
    }
    .progress-fill {
      fill: none; stroke: var(--gold); stroke-width: 1.5;
      stroke-linecap: round;
      transition: stroke-dashoffset .9s linear;
    }

    /* 計時器數字 */
    .timer-display {
      position: relative; z-index: 2;
      text-align: center;
      transition: opacity .5s ease;
    }
    .timer-digits {
      font-family: var(--mono); font-size: 72px;
      color: var(--gold); letter-spacing: 4px;
      line-height: 1;
      text-shadow: 0 0 40px rgba(230,194,128,.3);
    }
    .timer-label {
      font-size: 12px; letter-spacing: 4px; text-transform: uppercase;
      color: var(--silver-dim); margin-top: 12px;
    }
    .timer-session {
      font-size: 12px; letter-spacing: 2px;
      color: var(--green); margin-top: 6px;
      opacity: .7;
    }

    /* ── CONTROLS ── */
    .controls {
      display: flex; align-items: center; gap: 20px;
      margin-top: 40px;
      transition: opacity .5s ease;
    }
    .ctrl-btn {
      background: none; border: 1px solid var(--border-md);
      color: var(--silver); width: 44px; height: 44px;
      display: flex; align-items: center; justify-content: center;
      cursor: pointer; font-size: 14px;
      transition: all .2s; border-radius: 50%;
    }
    .ctrl-btn:hover { border-color: var(--gold-dim); color: var(--gold); background: var(--gold-glow); }
    .ctrl-btn.primary {
      width: 56px; height: 56px; font-size: 18px;
      border-color: var(--gold-dim); color: var(--gold);
    }
    .ctrl-btn.primary:hover { background: var(--gold-glow); border-color: var(--gold); box-shadow: 0 0 24px var(--gold-glow); }

    /* session presets */
    .presets {
      display: flex; gap: 8px; margin-top: 24px;
    }
    .preset-btn {
      background: none; border: 1px solid var(--border);
      color: var(--silver-dim); font-family: var(--mono); font-size: 13px;
      letter-spacing: 1px; padding: 5px 12px; cursor: pointer;
      transition: all .2s;
    }
    .preset-btn:hover, .preset-btn.active {
      border-color: var(--green-dim); color: var(--green);
      background: var(--green-glow);
    }

    /* ── BOTTOM MIXER ── */
    .mixer {
      position: fixed; bottom: 0; left: 0; right: 0; z-index: 90;
      background: rgba(242,237,228,.96);
      backdrop-filter: blur(16px);
      border-top: 1px solid var(--border);
      padding: 16px 32px 20px;
    }
    .mixer-header {
      display: flex; align-items: center; justify-content: space-between;
      margin-bottom: 14px;
    }
    .mixer-title {
      font-size: 11px; letter-spacing: 3px; text-transform: uppercase;
      color: var(--silver-dim);
    }
    .mixer-lock {
      font-size: 11px; letter-spacing: 2px; text-transform: uppercase;
      color: var(--green); opacity: .7;
    }
    .mixer-chevron { display: none; }
    .mixer-tracks {
      display: flex; gap: 0;
    }
    .track {
      flex: 1; display: flex; align-items: center; gap: 14px;
      padding: 12px 16px;
      border: 1px solid var(--border);
      border-right: none; position: relative;
      transition: background .2s;
    }
    .track:last-child { border-right: 1px solid var(--border); }
    .track:hover { background: rgba(230,194,128,.03); }

    .track-play {
      background: none; border: 1px solid var(--border-md);
      color: var(--silver-dim); width: 32px; height: 32px;
      display: flex; align-items: center; justify-content: center;
      cursor: pointer; font-size: 13px; flex-shrink: 0;
      transition: all .2s; border-radius: 50%;
    }
    .track-play:hover { border-color: var(--gold-dim); color: var(--gold); }
    .track-play.playing { border-color: var(--green-dim); color: var(--green); background: var(--green-glow); }
    .track-play.locked { border-color: var(--border); color: var(--border-md); cursor: not-allowed; }

    .track-info { flex: 1; min-width: 0; }
    .track-name {
      font-size: 13px; letter-spacing: 1.5px; color: var(--silver);
      margin-bottom: 4px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
    }
    .track-sub {
      font-size: 11px; letter-spacing: 1px; color: var(--silver-dim);
    }

    .track-vol {
      display: flex; align-items: center; gap: 8px;
    }
    .vol-slider {
      -webkit-appearance: none; appearance: none;
      width: 80px; height: 2px;
      background: var(--border-md); outline: none; cursor: pointer;
      border-radius: 1px;
    }
    .vol-slider::-webkit-slider-thumb {
      -webkit-appearance: none; appearance: none;
      width: 10px; height: 10px; border-radius: 50%;
      background: var(--gold); cursor: pointer;
      box-shadow: 0 0 8px var(--gold-glow);
    }
    .vol-slider::-moz-range-thumb {
      width: 10px; height: 10px; border-radius: 50%;
      background: var(--gold); cursor: pointer; border: none;
    }
    .vol-slider:disabled { opacity: .3; cursor: not-allowed; }
    .track-unlock-btn {
      font-size: 11px; letter-spacing: 1.5px; text-transform: uppercase;
      color: var(--gold); border: 1px solid var(--gold-dim);
      background: none; padding: 4px 10px; cursor: pointer;
      white-space: nowrap; transition: all .2s;
      flex-shrink: 0;
    }
    .track-unlock-btn:hover {
      background: var(--gold-glow);
      border-color: var(--gold);
    }

    /* trial countdown */
    .trial-bar {
      position: absolute; bottom: 0; left: 0;
      height: 1px; background: var(--green);
      transition: width .5s linear;
      opacity: .6;
    }

    /* ── TRANSITIONS ── */
    .fade-out { opacity: 0; pointer-events: none; }

    /* ── RESPONSIVE ── */
    @media (max-width: 600px) {
      .stage { padding-top: 84px; justify-content: flex-start; }
      .controls { margin-top: 20px; }
      .center-stage { width: 260px; height: 260px; }
      .timer-digits { font-size: 56px; }
      /* .stage 底部留白改由 JS 動態量測 .mixer 實際高度後設定，見 <script> */
      .mixer { padding: 12px 16px 16px; }
      .mixer-header {
        flex-direction: column; align-items: flex-start; gap: 4px;
        position: relative; cursor: pointer;
      }
      .mixer-chevron {
        display: block; position: absolute; top: 0; right: 0;
        color: var(--silver-dim); font-size: 14px;
        transition: transform .25s ease;
      }
      .mixer.collapsed .mixer-chevron { transform: rotate(-90deg); }
      .mixer-tracks {
        flex-direction: column;
        max-height: 400px; overflow: hidden;
        transition: max-height .3s ease, opacity .25s ease;
        margin-top: 14px; opacity: 1;
      }
      .mixer.collapsed .mixer-tracks {
        max-height: 0; margin-top: 0; opacity: 0; pointer-events: none;
      }
      .track {
        padding: 10px 12px; gap: 12px;
        border-right: 1px solid var(--border) !important;
        border-bottom: none;
      }
      .track:last-child { border-bottom: 1px solid var(--border); }
      .vol-slider { width: 80px; }
      .nav { padding: 0 16px; }
      .track-sub { display: none; }
      .mixer-title { font-size: 10px; }
      .mixer-lock { font-size: 10px; }
    }

    @media (prefers-reduced-motion: reduce) {
      .contour-ring { animation: none !important; }
    }

    /* ── 時間到：柔和光暈提醒 ── */
    @keyframes softGlow {
      0%   { opacity: 0; }
      25%  { opacity: 1; }
      75%  { opacity: 1; }
      100% { opacity: 0; }
    }
    .session-complete::after {
      content: '';
      position: fixed; inset: 0; z-index: 50; pointer-events: none;
      background: radial-gradient(ellipse at center,
        rgba(58,120,72,.15) 0%,
        rgba(42,88,56,.08) 50%,
        transparent 75%
      );
      animation: softGlow 3s ease-in-out forwards;
    }
    .session-complete .timer-digits {
      transition: color 1s ease, text-shadow 1s ease;
      color: var(--green) !important;
      text-shadow: 0 0 40px rgba(58,120,72,.3) !important;
    }
    .session-complete .contour-ring {
      transition: stroke 1s ease;
      stroke: var(--green) !important;
    }

    /* ── 漢堡按鈕 ── */
    .hamburger {
      position: relative;
      display: none;
      background: none; border: none; cursor: pointer;
      padding: 4px; color: var(--silver);
      flex-direction: column; justify-content: center; gap: 5px;
    }
    .hamburger span {
      display: block; width: 22px; height: 1.5px;
      background: currentColor;
      transition: transform .3s, opacity .3s;
    }
    .hamburger .hamburger-dot{
      display: none;
      position: absolute; top: -1px; right: -1px;
      width: 9px; height: 9px; border-radius: 50%;
      background: #d94f4f; border: 1.5px solid #0F120F;
    }
    .hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
    .hamburger.open span:nth-child(2) { opacity: 0; }
    .hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

    /* ── Overlay 選單 ── */
    .nav-overlay {
      position: fixed; inset: 0; z-index: 99;
      background: rgba(242,237,228,.97);
      backdrop-filter: blur(20px);
      display: flex; flex-direction: column;
      justify-content: flex-start; align-items: center;
      gap: 32px;
      opacity: 0; pointer-events: none;
      transition: opacity .3s ease;
      padding-top: 100px; padding-bottom: 60px;
      overflow-y: auto;
    }
    .nav-overlay.open { opacity: 1; pointer-events: all; }
    .nav-overlay a {
      font-family: 'Cormorant Garamond', serif;
      font-size: 28px; font-style: italic; font-weight: 300;
      letter-spacing: 2px; color: var(--ink);
      text-decoration: none; transition: color .2s;
    }
    .nav-overlay a:hover { color: var(--gold); }
    .overlay-divider { width: 40px; height: 1px; background: var(--border-md); }
    .overlay-lang { display: flex; gap: 16px; margin-top: 8px; }
    .overlay-lang button {
      background: none; border: none; cursor: pointer;
      font-size: 14px; letter-spacing: 2px; text-transform: uppercase;
      color: var(--silver-dim); transition: color .2s; padding: 4px;
    }
    .overlay-lang button:hover,
    .overlay-lang button.active { color: var(--gold); }
    .overlay-cta {
      font-family: 'Noto Sans TC', sans-serif !important;
      font-style: normal !important; font-size: 14px !important;
      letter-spacing: 2px; color: var(--gold) !important;
      border: 1px solid var(--gold-dim);
      padding: 10px 24px !important;
    }

    /* 會員專區子選單（頭像下拉 + 手機 overlay 共用的展開/收合互動） */
    .overlay-expand-trigger {
      font-family: 'Cormorant Garamond', serif; font-size: 28px; font-style: italic; font-weight: 300;
      letter-spacing: 2px; color: var(--ink);
      background: none; border: none; cursor: pointer; padding: 0;
      display: flex; align-items: center; gap: 8px; transition: color .2s;
    }
    .overlay-expand-trigger:hover { color: var(--gold); }
    .overlay-expand-arrow { font-size: 18px; transition: transform .2s; display: inline-block; }
    .overlay-expand-arrow.open { transform: rotate(180deg); }
    .overlay-profile-group { display: flex; flex-direction: column; align-items: center; gap: 20px; }
    .overlay-submenu { display: none; flex-direction: column; align-items: center; gap: 20px; }
    .overlay-submenu.open { display: flex; }
    .nav-overlay .overlay-subitem {
      font-family: 'Cormorant Garamond', serif; font-size: 20px; font-style: italic; font-weight: 300;
      letter-spacing: 1px; color: var(--silver-dim); text-decoration: none; transition: color .2s;
    }
    .nav-overlay .overlay-subitem:hover { color: var(--gold); }

    /* ── 手機漢堡 ── */
    @media(max-width:600px){
      .hamburger{ display:flex; }
      .nav-desktop-items{ display:none !important; }
      .nav-cta{ display:block; }
    }

/* ── Logo 修正 ── */
.nav-logo { 
  font-family: "Cormorant Garamond", serif !important; 
  font-style: italic !important; 
  font-size: 20px !important; 
  letter-spacing: 1px !important; 
  text-decoration: none !important;
  color: var(--sand, #0e2830) !important;
}

/* ── FOOTER（與其他頁面一致）── */
footer{
  padding:48px 0;
  border-top:1px solid var(--border);
  background: var(--void);
  position: relative; z-index: 1;
}
.footer-inner{
  display:flex;justify-content:space-between;align-items:center;
  flex-wrap:wrap;gap:20px;
  max-width:960px;margin:0 auto;padding:0 24px;
}
.footer-brand{
  font-family:'Cormorant Garamond',serif;
  font-size:18px;font-style:italic;color:var(--mist);
}
.footer-brand p{
  font-size:14px;font-family:'Noto Sans TC',sans-serif;
  font-style:normal;color:var(--silver-dim);margin-top:4px;letter-spacing:.5px;
}
.footer-links{
  display:flex;gap:24px;list-style:none;
}
.footer-links a{
  font-size:14px;letter-spacing:1px;color:var(--silver-dim);
  text-decoration:none;transition:color .2s;
}
.footer-links a:hover{color:var(--mist);}
.footer-note{font-size:13px;color:var(--silver-dim);letter-spacing:.5px;}