/* ============ 发色魔镜 · 基础（明亮浅色主题） ============ */
:root{
  --bg:#f8f2ea;
  --bg-2:#fffdf9;
  --card:#ffffff;
  --card-2:#f6efe6;
  --line:rgba(122,84,55,.12);
  --line-strong:rgba(122,84,55,.22);
  --text:#453a31;
  --muted:#8c7a6a;
  --muted-2:#b09f8e;
  --accent:#ef7c52;
  --accent-2:#d85f9c;
  --good:#2e9e5b;
  --warn:#c08a10;
  --danger:#d84a4a;
  --grad:linear-gradient(135deg,#ff9664 0%,#e75f9d 100%);
  --grad-soft:linear-gradient(135deg,rgba(255,150,100,.16),rgba(231,95,157,.12));
  --radius:18px;
  --radius-s:12px;
  --shadow:0 14px 42px rgba(150,96,60,.14);
  --shadow-soft:0 6px 18px rgba(150,96,60,.10);
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  background:
    radial-gradient(1100px 640px at 88% -8%, rgba(231,95,157,.12), transparent 60%),
    radial-gradient(1000px 640px at -8% 16%, rgba(255,150,100,.16), transparent 55%),
    linear-gradient(180deg,#fdf7f0 0%,var(--bg) 40%,#f6eee4 100%);
  background-attachment:fixed;
  color:var(--text);
  line-height:1.6;
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
}
button{font-family:inherit;color:inherit;background:none;border:none;cursor:pointer}
button:disabled{cursor:not-allowed;opacity:.45}
img{display:block;max-width:100%}
.hidden,[hidden]{display:none !important}
::selection{background:rgba(239,124,82,.28)}
a{color:inherit}

/* ============ 顶栏 ============ */
.topbar{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px clamp(18px,4vw,44px);
  position:relative;z-index:20;
}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--text);font-weight:700;font-size:18px;letter-spacing:.02em}
.brand-button{font-size:18px;font-weight:700}
.brand-mark{
  width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
  background:var(--grad);color:#fff;font-size:19px;font-weight:800;
  box-shadow:0 6px 16px rgba(231,95,157,.35);
}
.brand.small .brand-mark{width:26px;height:26px;font-size:15px;border-radius:8px}
.privacy-pill,.local-status{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);
  border:1px solid var(--line);padding:7px 13px;border-radius:999px;background:rgba(255,255,255,.65);
  backdrop-filter:blur(8px);
}
.dot{width:7px;height:7px;border-radius:50%;background:#2e9e5b;box-shadow:0 0 0 3px rgba(46,158,91,.18);flex:none}

/* ============ 落地页 Hero ============ */
.hero{
  display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(24px,5vw,70px);align-items:center;
  padding:clamp(28px,5vw,64px) clamp(18px,6vw,90px) 40px;
  max-width:1400px;margin:0 auto;
}
.eyebrow{
  font-size:12px;letter-spacing:.32em;color:var(--accent);text-transform:uppercase;font-weight:800;
}
.hero-copy h1{
  font-size:clamp(34px,5vw,60px);line-height:1.14;letter-spacing:-.01em;font-weight:800;color:var(--text);
  margin:16px 0 20px;
}
.hero-copy h1::after{content:"";display:block;width:72px;height:5px;border-radius:4px;background:var(--grad);margin-top:22px}
.hero-desc{color:var(--muted);font-size:clamp(15px,1.3vw,17px);max-width:520px}
.hero-steps{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:26px}
.hero-steps span{font-size:14px;color:var(--muted);display:inline-flex;align-items:center;gap:7px}
.hero-steps b{
  font-style:normal;font-size:12px;font-weight:800;color:var(--accent-2);
  background:rgba(216,95,156,.12);border-radius:6px;padding:2px 6px;letter-spacing:.05em;
}

/* 上传 / 登录卡片 */
.upload-wrap{position:relative;display:flex;align-items:center;justify-content:center;padding:20px}
.tone-orbit{position:absolute;border-radius:50%;filter:blur(64px);pointer-events:none}
.tone-orbit-a{width:330px;height:330px;background:radial-gradient(circle,rgba(255,150,100,.55),transparent 70%);animation:float 9s ease-in-out infinite}
.tone-orbit-b{width:300px;height:300px;background:radial-gradient(circle,rgba(231,95,157,.42),transparent 70%);animation:float 12s ease-in-out infinite reverse}
@keyframes float{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(20px,-24px) scale(1.06)}}
.upload-card{
  position:relative;z-index:2;width:min(430px,100%);padding:clamp(30px,4vw,44px) 34px;
  background:rgba(255,255,255,.92);border:1px solid rgba(255,255,255,.9);border-radius:26px;
  text-align:center;box-shadow:0 20px 50px rgba(170,110,70,.18),0 2px 0 rgba(255,255,255,.8) inset;
  backdrop-filter:blur(14px);transition:transform .25s,box-shadow .25s;
}
.upload-card.is-dragging{border-color:var(--accent);transform:scale(1.015);box-shadow:0 24px 60px rgba(239,124,82,.24)}
.upload-card:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.upload-icon{
  width:58px;height:58px;margin:0 auto 18px;border-radius:50%;display:grid;place-items:center;
  background:var(--grad);font-size:26px;color:#fff;font-weight:300;
  box-shadow:0 10px 26px rgba(231,95,157,.35);
}
.upload-card h2{font-size:24px;color:var(--text);margin-bottom:8px}
.upload-hint{color:var(--muted);font-size:15px;margin-bottom:22px}
.primary-button{
  background:var(--grad);color:#fff;font-weight:700;font-size:15px;padding:13px 34px;border-radius:999px;
  box-shadow:0 10px 24px rgba(239,124,82,.35);transition:transform .15s,box-shadow .2s;
}
.primary-button:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(239,124,82,.45)}
.upload-meta{color:var(--muted-2);font-size:12px;margin-top:16px}
.error-message{color:var(--danger);font-size:13px;margin-top:12px}

/* 亮点条 */
.feature-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:14px;
  max-width:1400px;margin:8px auto 10px;padding:0 clamp(18px,6vw,90px);
}
.feature{
  display:flex;gap:12px;align-items:flex-start;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);padding:16px;box-shadow:var(--shadow-soft);
}
.feature-ic{
  width:34px;height:34px;flex:none;border-radius:10px;display:grid;place-items:center;color:#fff;
  background:var(--grad);font-size:15px;
}
.feature b{font-size:14.5px;display:block;margin-bottom:2px}
.feature p{font-size:12.5px;color:var(--muted-2)}

/* 拍照提示 */
.photo-guide{text-align:center;padding:34px 20px 20px}
.photo-guide .eyebrow{margin-bottom:16px}
.guide-list{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:10px 16px}
.guide-list span{color:var(--muted);font-size:15px}
.guide-list i{width:4px;height:4px;border-radius:50%;background:var(--accent-2);opacity:.6}
.page-footer{
  margin-top:30px;padding:26px 20px 40px;text-align:center;color:var(--muted-2);font-size:13px;
  border-top:1px solid var(--line);display:flex;flex-direction:column;gap:10px;align-items:center;
}
.page-footer p{max-width:560px;margin:0 auto}

/* ============ 工作台 ============ */
.studio-topbar{
  border-bottom:1px solid var(--line);
  position:sticky;top:0;background:rgba(253,247,240,.86);backdrop-filter:blur(14px);z-index:40;
}
.studio-nav-actions{display:flex;align-items:center;gap:16px}
.text-button{color:var(--accent);font-size:14px;padding:6px 10px;border-radius:9px;font-weight:600}
.text-button:hover{background:rgba(239,124,82,.12)}
.studio-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 390px;gap:22px;align-items:start;
  max-width:1500px;margin:0 auto;padding:24px clamp(16px,3vw,36px);
}
.image-stage{min-width:0}
.stage-header{display:flex;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:14px;flex-wrap:wrap}
.stage-header h1{font-size:24px;font-weight:800;margin-top:4px;letter-spacing:-.01em;color:var(--text)}
.recognition-status{
  display:inline-flex;align-items:center;gap:7px;font-size:12.5px;color:var(--good);
  background:rgba(46,158,91,.10);border:1px solid rgba(46,158,91,.30);padding:6px 12px;border-radius:999px;font-weight:600;
}
.recognition-status .dot{background:#2e9e5b;box-shadow:0 0 0 3px rgba(46,158,91,.16)}

/* 画布壳 */
.canvas-shell{
  position:relative;border-radius:var(--radius);overflow:hidden;background:#efe6da;
  border:1px solid var(--line-strong);box-shadow:0 18px 46px rgba(150,96,60,.16);touch-action:none;
}
.canvas-shell canvas{display:block;width:100%;height:auto}
.canvas-shell.is-editing{outline:2px dashed var(--accent);outline-offset:-2px}
.compare-handle{
  position:absolute;top:0;bottom:0;width:2px;background:#fff;z-index:5;cursor:ew-resize;
  box-shadow:0 0 0 1px rgba(0,0,0,.25),0 0 14px rgba(0,0,0,.35);transform:translateX(-50%);left:50%;
}
.compare-handle span{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);background:rgba(60,40,30,.6);
  color:#fff;font-size:11px;letter-spacing:.05em;padding:5px 7px;border-radius:8px;white-space:nowrap;pointer-events:none;
}
.brush-cursor{
  position:absolute;border:2px solid #fff;border-radius:50%;pointer-events:none;z-index:6;
  box-shadow:0 0 0 1px rgba(0,0,0,.4),0 0 12px rgba(0,0,0,.3);transform:translate(-50%,-50%);
}
.brush-cursor.add{border-color:#2e9e5b}
.brush-cursor.erase{border-color:#d84a4a}

.loading-overlay{
  position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;
  background:rgba(253,248,241,.9);backdrop-filter:blur(6px);z-index:20;text-align:center;padding:20px;color:var(--text);
}
.loading-overlay strong{font-size:17px}
.loading-overlay p{color:var(--muted);font-size:13px}
.loader{
  width:42px;height:42px;border-radius:50%;border:3px solid rgba(239,124,82,.18);border-top-color:var(--accent);
  animation:spin 1s linear infinite;margin-bottom:6px;
}
@keyframes spin{to{transform:rotate(360deg)}}
.model-progress{display:flex;align-items:center;gap:10px;width:min(320px,80%);margin-top:8px}
.model-progress-track{flex:1;height:6px;border-radius:4px;background:rgba(122,84,55,.14);overflow:hidden}
.model-progress-bar{height:100%;width:0;background:var(--grad);border-radius:4px;transition:width .15s}
.model-progress span{font-size:12px;color:var(--muted);min-width:40px;text-align:right}

.stage-error{
  position:absolute;inset:0;z-index:18;display:flex;flex-direction:column;gap:14px;align-items:center;justify-content:center;text-align:center;
  background:rgba(253,248,241,.94);color:var(--danger);padding:24px;font-size:14px;
}
/* 视图切换 */
.view-modes{display:inline-flex;gap:4px;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:4px;margin:12px 0 0;box-shadow:var(--shadow-soft)}
.view-mode-btn{font-size:13px;padding:7px 16px;border-radius:9px;color:var(--muted);transition:all .18s}
.view-mode-btn.is-active{background:var(--grad);color:#fff;font-weight:600;box-shadow:0 3px 10px rgba(239,124,82,.25)}
/* 工具栏 */
.canvas-toolbar{display:flex;align-items:center;gap:10px;margin-top:14px;flex-wrap:wrap}
.toolbar-btn{
  display:inline-flex;align-items:center;gap:7px;font-size:13.5px;color:var(--muted);
  border:1px solid var(--line);border-radius:11px;padding:9px 14px;background:var(--card);transition:all .18s;box-shadow:var(--shadow-soft);
}
.toolbar-btn:hover:not(:disabled){color:var(--text);border-color:var(--line-strong);transform:translateY(-1px)}
.toolbar-btn.is-active{color:#fff;border-color:transparent;background:var(--grad);box-shadow:0 6px 16px rgba(239,124,82,.3)}
.toolbar-btn.is-active .tb-ic{color:#fff}
.tb-ic{color:var(--accent);font-size:15px}
.image-resolution{font-size:12.5px;color:var(--muted-2);font-variant-numeric:tabular-nums}
.toolbar-spacer{flex:1}
.download-btn{
  background:var(--grad);color:#fff;font-size:14px;font-weight:700;padding:10px 20px;border-radius:11px;
  box-shadow:0 8px 20px rgba(239,124,82,.32);transition:transform .15s;
}
.download-btn:hover:not(:disabled){transform:translateY(-1px)}
/* ============ 控制台 ============ */
.control-panel{
  display:flex;flex-direction:column;gap:16px;position:sticky;top:78px;max-height:calc(100vh - 96px);
  overflow-y:auto;padding-right:4px;scrollbar-width:thin;
}
.control-panel::-webkit-scrollbar{width:6px}
.control-panel::-webkit-scrollbar-thumb{background:rgba(122,84,55,.22);border-radius:3px}
.control-section{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;
  box-shadow:var(--shadow-soft);animation:rise .4s ease both;
}
@keyframes rise{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.section-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:14px}
.section-index{font-size:11px;font-weight:800;color:var(--accent-2);letter-spacing:.14em}
.section-head h2{font-size:17px;font-weight:800;letter-spacing:-.01em;margin-top:1px;color:var(--text)}
.section-description{color:var(--muted);font-size:13px;margin-bottom:12px}
.texture-note{font-size:11.5px;color:var(--accent);border:1px solid rgba(239,124,82,.35);background:rgba(239,124,82,.10);padding:4px 10px;border-radius:999px;font-weight:600}

/* 当前颜色与取色器 */
.native-color{display:inline-flex;align-items:center;gap:8px;cursor:pointer;padding:6px 9px 6px 6px;border:1px solid var(--line);border-radius:11px;background:var(--card-2);font-size:13px}
.native-color input{position:absolute;opacity:0;width:1px;height:1px;pointer-events:none}
.native-color span{width:24px;height:24px;border-radius:8px;border:1px solid rgba(0,0,0,.12);box-shadow:inset 0 0 0 1px rgba(0,0,0,.06)}
.native-color b{font-weight:600;font-variant-numeric:tabular-nums;color:var(--muted)}
.skin-reco-line{font-size:13px;color:var(--text);background:var(--grad-soft);border:1px solid rgba(239,124,82,.30);padding:9px 12px;border-radius:11px;margin-bottom:14px}

/* 色系页签 */
.family-tabs{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:12px}
.family-tab{font-size:12.5px;color:var(--muted);padding:6px 12px;border-radius:999px;border:1px solid var(--line);background:var(--card-2);transition:all .18s;font-weight:500}
.family-tab:hover{color:var(--text)}
.family-tab.is-active{color:#fff;border-color:transparent;background:var(--grad);box-shadow:0 4px 12px rgba(239,124,82,.28)}

/* 预设色板 */
.preset-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(96px,1fr));gap:9px}
.preset-button{
  position:relative;display:flex;flex-direction:column;gap:7px;align-items:center;text-align:center;
  border:1px solid var(--line);border-radius:14px;padding:11px 6px 9px;background:var(--card-2);transition:all .16s;
}
.preset-button:hover{border-color:var(--line-strong);transform:translateY(-1px);box-shadow:var(--shadow-soft)}
.preset-button.is-selected{border-color:var(--accent);background:rgba(239,124,82,.12);box-shadow:0 0 0 1px var(--accent)}
.preset-swatch{width:34px;height:34px;border-radius:50%;border:1px solid rgba(0,0,0,.12);box-shadow:inset 0 2px 6px rgba(0,0,0,.16),0 2px 5px rgba(0,0,0,.08);transition:transform .16s}
.preset-button:hover .preset-swatch{transform:scale(1.08)}
.preset-button b{font-size:12.5px;font-weight:600;line-height:1.3;color:var(--text)}
.preset-button small{font-size:10.5px;color:var(--muted-2);line-height:1.2}
.reco-badge{
  position:absolute;top:6px;right:6px;font-size:9.5px;font-weight:700;color:#1c5c26;
  background:linear-gradient(135deg,#b9f0b0,#82d98f);padding:2px 6px;border-radius:999px;letter-spacing:.02em;box-shadow:0 2px 8px rgba(60,140,80,.25);
}

/* 滑杆 */
.slider-field{display:block;margin-top:16px}
.slider-label{display:flex;justify-content:space-between;align-items:baseline;font-size:13.5px;margin-bottom:8px}
.slider-label b{font-weight:600;color:var(--text)}
.slider-label output{color:var(--accent);font-weight:700;font-variant-numeric:tabular-nums;font-size:13px}
input[type=range]{
  -webkit-appearance:none;appearance:none;width:100%;height:26px;background:transparent;cursor:pointer;
}
input[type=range]::-webkit-slider-runnable-track{height:6px;border-radius:4px;background:rgba(122,84,55,.16)}
input[type=range]::-webkit-slider-thumb{
  -webkit-appearance:none;width:18px;height:18px;border-radius:50%;background:#fff;margin-top:-6px;
  border:1px solid rgba(0,0,0,.08);box-shadow:0 2px 8px rgba(122,84,55,.35),0 0 0 4px rgba(239,124,82,.25);transition:transform .1s;
}
input[type=range]::-webkit-slider-thumb:hover{transform:scale(1.15)}
input[type=range]::-moz-range-track{height:6px;border-radius:4px;background:rgba(122,84,55,.16)}
input[type=range]::-moz-range-thumb{width:17px;height:17px;border:1px solid rgba(0,0,0,.08);border-radius:50%;background:#fff;box-shadow:0 2px 8px rgba(122,84,55,.35),0 0 0 4px rgba(239,124,82,.25)}
input[type=range]:focus-visible{outline:none}
input[type=range]:focus-visible::-webkit-slider-thumb{box-shadow:0 0 0 3px var(--accent)}
.range-hints{display:flex;justify-content:space-between;font-size:11px;color:var(--muted-2);margin-top:2px;font-style:normal}
.range-hints i{font-style:normal}
.hue-slider::-webkit-slider-runnable-track{
  background:linear-gradient(90deg,#e44d3a 0%,#e8a13c 17%,#e6d23c 33%,#5fb963 50%,#3f9fd6 67%,#7a6bd6 83%,#d85fa0 100%);
  height:8px;border-radius:5px;
}
.hue-slider::-webkit-slider-thumb{margin-top:-5px}
.hue-slider::-moz-range-track{height:8px;border-radius:5px;background:linear-gradient(90deg,#e44d3a 0%,#e8a13c 17%,#e6d23c 33%,#5fb963 50%,#3f9fd6 67%,#7a6bd6 83%,#d85fa0 100%)}

/* 肤色 */
.skin-badge{font-size:11.5px;font-weight:700;color:#fff;padding:5px 11px;border-radius:999px;background:linear-gradient(135deg,#e6a35c,#d9826a);box-shadow:0 3px 10px rgba(214,140,90,.3)}
.skin-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:4px}
.skin-tag{
  font-size:12.5px;padding:7px 13px;border-radius:999px;border:1px solid var(--line);background:var(--card-2);color:var(--text);transition:all .15s;
  display:inline-flex;align-items:center;gap:7px;font-weight:600;
}
.skin-tag:hover{color:var(--accent);border-color:var(--accent);transform:translateY(-1px);box-shadow:var(--shadow-soft)}
.skin-tag b{font-weight:600;color:var(--text);display:block;font-size:12.5px}
.skin-tag small{font-size:10.5px;color:var(--muted-2)}

/* 区域校准 */
.reset-button{font-size:12px;color:var(--accent);padding:5px 10px;border:1px solid rgba(239,124,82,.4);border-radius:8px;background:rgba(239,124,82,.08);font-weight:600}
.reset-button:hover:not(:disabled){background:rgba(239,124,82,.16)}
.brush-controls{display:flex;gap:8px;flex-wrap:wrap}
.brush-btn{font-size:13px;padding:9px 14px;border-radius:10px;border:1px solid var(--line);color:var(--muted);background:var(--card-2);transition:all .16s;flex:1;min-width:92px;font-weight:600}
.brush-btn:hover{color:var(--text);border-color:var(--line-strong)}
.brush-btn.is-active{color:#fff;border-color:transparent;background:var(--grad);box-shadow:0 6px 16px rgba(239,124,82,.3)}
.compact-slider{margin-top:12px}
.calibration-tip{font-size:11.5px;color:var(--muted-2);margin-top:10px;line-height:1.5}

/* 观察卡 */
.observation-card{
  background:linear-gradient(150deg,rgba(255,150,100,.14),rgba(231,95,157,.10)),#fff;
  border:1px solid rgba(239,124,82,.28);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow-soft);
}
.observation-card h3{font-size:16px;margin:6px 0 10px;color:var(--text)}
.observation-card ul{list-style:none}
.observation-card li{color:var(--muted);font-size:13px;padding:4px 0 4px 22px;position:relative}
.observation-card li::before{content:"❋";position:absolute;left:2px;color:var(--accent);font-size:12px;top:6px}

/* 收藏按钮 */
.favorite-button{
  display:flex;align-items:center;justify-content:center;gap:8px;width:100%;
  background:var(--grad-soft);color:var(--text);
  border:1px solid rgba(216,95,156,.35);border-radius:14px;padding:14px;font-size:15px;font-weight:700;transition:all .18s;
}
.favorite-button:hover:not(:disabled){background:linear-gradient(135deg,rgba(255,150,100,.26),rgba(231,95,157,.22));transform:translateY(-1px);box-shadow:var(--shadow-soft)}
.fav-heart{color:#e0559b;font-size:17px}
.favorite-button small{font-weight:500;color:var(--muted);font-size:12.5px}
.notice{color:var(--warn);font-size:13px;text-align:center;min-height:0;transition:opacity .3s;font-weight:600}

/* 收藏区 */
.favorites-section{max-width:1500px;margin:6px auto 30px;padding:0 clamp(16px,3vw,36px)}
.favorites-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:12px;margin-bottom:16px}
.favorites-heading h2{font-size:22px;font-weight:800;margin-top:2px;color:var(--text)}
.outline-button{font-size:13.5px;color:var(--accent);border:1px solid rgba(239,124,82,.4);padding:9px 16px;border-radius:11px;background:rgba(239,124,82,.08);font-weight:600}
.outline-button:hover{background:rgba(239,124,82,.16)}
.favorite-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:14px}
.favorite-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-soft);
  transition:transform .18s,border-color .18s,box-shadow .18s;
}
.favorite-card:hover{transform:translateY(-3px);border-color:var(--line-strong);box-shadow:0 16px 34px rgba(150,96,60,.16)}
.favorite-preview{width:100%;aspect-ratio:3/3.6;overflow:hidden;background:#f0e7db}
.favorite-preview img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.favorite-card:hover .favorite-preview img{transform:scale(1.04)}
.favorite-meta{display:flex;align-items:center;gap:8px;padding:11px 12px}
.mini-swatch{width:16px;height:16px;border-radius:50%;flex:none;display:inline-block;vertical-align:-3px;border:1px solid rgba(0,0,0,.15)}
.favorite-name{font-size:13.5px;font-weight:600;flex:1;text-align:left;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--text)}
.remove-favorite{color:var(--muted-2);font-size:16px;width:26px;height:26px;border-radius:8px;line-height:1}
.remove-favorite:hover{color:var(--danger);background:rgba(216,74,74,.10)}
.favorite-empty{color:var(--muted-2);font-size:13px}

/* 底部 */
.studio-footer{
  border-top:1px solid var(--line);padding:22px 30px 34px;display:flex;flex-direction:column;gap:6px;align-items:center;
  color:var(--muted-2);font-size:12.5px;text-align:center;
}
.studio-footer span{color:var(--muted);font-weight:600}

/* 对比弹窗 */
.compare-dialog{position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;padding:24px}
.dialog-backdrop{position:absolute;inset:0;background:rgba(70,45,30,.5);backdrop-filter:blur(8px)}
.dialog-content{
  position:relative;z-index:2;width:min(1100px,100%);max-height:88vh;overflow:auto;background:var(--bg-2);
  border:1px solid var(--line);border-radius:22px;padding:22px;box-shadow:0 26px 80px rgba(90,55,30,.3);animation:pop .25s ease both;
}
@keyframes pop{from{opacity:0;transform:scale(.96) translateY(10px)}to{opacity:1;transform:none}}
.dialog-header{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:18px;flex-wrap:wrap}
.dialog-header h2{font-size:20px;font-weight:800;margin-top:2px;color:var(--text)}
.dialog-actions{display:flex;align-items:center;gap:8px}
.dialog-close{font-size:22px;color:var(--muted);width:34px;height:34px;border-radius:10px;line-height:1}
.dialog-close:hover{background:rgba(122,84,55,.10);color:var(--text)}
.comparison-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:14px}
.comparison-grid figure{background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:var(--shadow-soft)}
.comparison-grid img{width:100%;aspect-ratio:3/3.6;object-fit:cover;background:#f0e7db}
.comparison-grid figcaption{display:flex;align-items:center;gap:8px;padding:10px 12px;font-size:13px;font-weight:600;color:var(--text)}
.comparison-grid figcaption .mini-swatch.original{background:linear-gradient(135deg,#eee,#c9c4bc)}

/* Toast */
.toast{
  position:fixed;left:50%;bottom:26px;transform:translateX(-50%);z-index:200;
  background:#fff;border:1px solid var(--line-strong);color:var(--text);padding:11px 20px;border-radius:999px;
  font-size:13.5px;box-shadow:0 14px 40px rgba(120,80,50,.25);max-width:min(92vw,560px);text-align:center;
}
@keyframes toastIn{from{opacity:0;transform:translate(-50%,10px)}to{opacity:1;transform:translate(-50%,0)}}

/* ============ 登录门 ============ */
.topbar-right{display:flex;align-items:center;gap:12px}
.top-logout{color:var(--muted);font-size:13px;padding:6px 12px;border-radius:9px;font-weight:600}
.top-logout:hover{color:var(--accent);background:rgba(239,124,82,.12)}
.login-card{display:flex;flex-direction:column}
.login-icon{
  width:58px;height:58px;margin:0 auto 14px;border-radius:50%;display:grid;place-items:center;flex:none;
  background:var(--grad);color:#fff;font-size:24px;box-shadow:0 10px 26px rgba(231,95,157,.35);
}
.field{display:block;text-align:left;margin:14px 0 0}
.field span{display:block;font-size:12.5px;color:var(--muted);margin-bottom:6px;font-weight:600}
.field input{
  width:100%;background:var(--card-2);border:1px solid var(--line-strong);color:var(--text);
  padding:12px 14px;border-radius:11px;font-size:14.5px;outline:none;transition:border-color .18s,box-shadow .18s;
}
.field input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(239,124,82,.16)}
.field input::placeholder{color:var(--muted-2)}
.login-submit{width:100%;margin-top:18px}
.login-card .error-message{margin-top:12px}
.login-card .upload-meta{margin-top:14px}

/* ============ 响应式 ============ */
@media (max-width:1180px){
  .hero{grid-template-columns:1fr;gap:30px;padding-top:26px}
  .feature-strip{grid-template-columns:repeat(2,1fr)}
  .studio-layout{grid-template-columns:1fr}
  .control-panel{position:static;max-height:none;overflow:visible;flex-direction:row;flex-wrap:wrap}
  .control-panel .control-section,.control-panel .observation-card,.control-panel .favorite-button,.control-panel .notice{flex:1 1 340px}
  .control-panel .favorite-button{flex:1 1 100%}
}
@media (max-width:640px){
  .feature-strip{grid-template-columns:1fr 1fr}
  .privacy-pill{display:none}
  .studio-topbar{position:static}
  .hero{padding-left:16px;padding-right:16px}
  .feature-strip,.favorites-section{padding-left:14px;padding-right:14px}
  .upload-card{padding:26px 20px}
  .canvas-toolbar .toolbar-btn{flex:1;justify-content:center}
  .canvas-toolbar{position:sticky;bottom:0;background:rgba(253,247,240,.94);backdrop-filter:blur(12px);margin:10px -8px -8px;padding:8px;border-radius:16px 16px 0 0;z-index:8;box-shadow:0 -6px 18px rgba(150,96,60,.08)}
  .image-resolution{display:none}
  .compare-dialog{padding:10px}
  .dialog-content{padding:14px;max-height:94vh}
  .comparison-grid{grid-template-columns:repeat(auto-fill,minmax(140px,1fr))}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms !important;transition-duration:.01ms !important}
}