/* ============================================================
   v16 · Macaron Glass
   干净纯白 / 浅蓝渐变底 · 通透亚克力 + 果冻材质 · 柔和三点布光
   低饱和马卡龙：浅蓝 · 奶白 · 淡橙 · 浅绿 —— 留白充足，不刺眼
   ============================================================ */

:root {
  --bg: #f7fbfe;
  --bg-soft: #eef5fa;
  --card: #ffffff;
  --card-2: #fbfdff;
  --text: #33485c;
  --text-2: #5d7285;
  --text-3: #9cafc0;
  --border: rgba(148, 180, 205, 0.26);
  --brand: #2f6d9e;                              /* 墨蓝，白底 5.5:1 */
  --brand-2: #7fa9c7;
  --brand-deep: #1f5177;
  --brand-grad: linear-gradient(135deg, #d3e9f8 0%, #a8d3ef 100%);
  --brand-soft: rgba(143, 195, 228, 0.18);
  --accent: #5f9e8a;
  --accent-soft: rgba(182, 223, 200, 0.3);
  --success: #4b8f74;
  --success-soft: rgba(182, 223, 200, 0.28);
  --warn: #b1793f;
  --warn-soft: rgba(239, 195, 155, 0.28);
  --danger: #b45e5e;
  --danger-soft: rgba(240, 190, 190, 0.26);
  --shadow: 0 14px 34px -20px rgba(86, 138, 178, 0.34);
  --shadow-lg: 0 30px 64px -30px rgba(86, 138, 178, 0.46);
  --radius: 20px;
  --radius-sm: 14px;
  --font-jelly: "Trebuchet MS", "Segoe UI", "Arial Rounded MT Bold", var(--font-ui);
  --glass: linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(255, 255, 255, 0.74));
  --glass-edge: rgba(255, 255, 255, 0.92);
}

[data-theme="dark"] {
  --bg: #121a22;
  --bg-soft: #1a242e;
  --card: #1b2530;
  --card-2: #202b37;
  --text: #e2ebf3;
  --text-2: #a7b9c8;
  --text-3: #6f8394;
  --border: rgba(126, 160, 188, 0.22);
  --brand: #93c3e4;
  --brand-deep: #cfe6f7;
  --brand-grad: linear-gradient(135deg, #3d6076 0%, #4e7c99 100%);
  --brand-soft: rgba(143, 195, 228, 0.14);
  --accent: #8fcbb4;
  --accent-soft: rgba(143, 203, 180, 0.16);
  --success: #8fcbb4;
  --success-soft: rgba(143, 203, 180, 0.16);
  --warn: #e0b489;
  --warn-soft: rgba(224, 180, 137, 0.16);
  --danger: #e8a2a2;
  --danger-soft: rgba(232, 162, 162, 0.16);
  --shadow: 0 14px 34px -18px rgba(0, 0, 0, 0.55);
  --shadow-lg: 0 30px 64px -26px rgba(0, 0, 0, 0.65);
  --glass: linear-gradient(180deg, rgba(32, 44, 56, 0.9), rgba(27, 37, 48, 0.82));
  --glass-edge: rgba(126, 160, 188, 0.16);
}

/* ---------- 纸面：白 → 浅蓝渐变 + 三色柔光 ---------- */
body {
  background:
    radial-gradient(1200px 720px at 6% -10%, #eaf6ff 0%, rgba(234, 246, 255, 0) 62%),
    radial-gradient(1000px 640px at 98% 2%, #eef8f2 0%, rgba(238, 248, 242, 0) 58%),
    radial-gradient(960px 700px at 50% 112%, #fdf4e9 0%, rgba(253, 244, 233, 0) 62%),
    linear-gradient(180deg, #ffffff 0%, #f8fcff 40%, #eef6fc 100%);
  background-attachment: fixed;
}
[data-theme="dark"] body {
  background:
    radial-gradient(1100px 700px at 8% -8%, #172633 0%, rgba(23, 38, 51, 0) 62%),
    radial-gradient(900px 620px at 98% 4%, #16241f 0%, rgba(22, 36, 31, 0) 60%),
    linear-gradient(180deg, #0f161d 0%, #121a22 45%, #131c25 100%);
  background-attachment: fixed;
}

.topbar {
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(20px) saturate(1.08);
  -webkit-backdrop-filter: blur(20px) saturate(1.08);
  border-bottom: 1px solid rgba(255, 255, 255, 0.9);
  box-shadow: 0 1px 0 rgba(148, 180, 205, 0.14);
}
[data-theme="dark"] .topbar {
  background: rgba(18, 26, 34, 0.78);
  border-bottom-color: rgba(126, 160, 188, 0.14);
}

.logo-text { color: var(--text); }
.logo-text i, .logo-cet, .auth-logo i {
  background: linear-gradient(135deg, #4a8ec2, #5f9e8a);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- 通透亚克力卡片 ---------- */
.card {
  background: var(--glass);
  border: 1px solid var(--glass-edge);
  border-radius: var(--radius);
  box-shadow: var(--shadow), inset 0 1px 0 rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px) saturate(1.03);
  -webkit-backdrop-filter: blur(12px) saturate(1.03);
}
[data-theme="dark"] .card { box-shadow: var(--shadow), inset 0 1px 0 rgba(255, 255, 255, 0.04); }

/* ---------- 按钮：马卡龙胶囊 + 墨蓝字 ---------- */
.btn-primary {
  background: linear-gradient(135deg, #d8ecfa 0%, #b3d8f0 55%, #cfe7f7 100%);
  color: var(--brand-deep);
  border: 1px solid rgba(255, 255, 255, 0.9);
  box-shadow: 0 12px 26px -14px rgba(94, 152, 192, 0.6), inset 0 1px 0 #fff;
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 34px -16px rgba(94, 152, 192, 0.7), inset 0 1px 0 #fff;
}
.btn-ghost {
  background: rgba(255, 255, 255, 0.7);
  color: var(--text-2);
  border: 1px solid var(--border);
  box-shadow: 0 8px 20px -16px rgba(86, 138, 178, 0.5);
}
.btn-ghost:hover { color: var(--brand-deep); border-color: rgba(143, 195, 228, 0.75); background: #fff; }

.nav-btn { color: var(--text-2); border-radius: 12px; }
.nav-btn:hover { background: rgba(255, 255, 255, 0.8); color: var(--text); }
.nav-btn.active {
  color: var(--brand-deep);
  background: linear-gradient(135deg, #e8f4fd 0%, #cfe7f7 100%);
  box-shadow: 0 10px 20px -12px rgba(94, 152, 192, 0.75), inset 0 1px 0 #fff;
}

.user-chip { background: rgba(255, 255, 255, 0.78); border: 1px solid var(--border); }

.chip { background: rgba(255, 255, 255, 0.78); border: 1px solid var(--border); color: var(--text-2); }
.chip:hover { border-color: rgba(143, 195, 228, 0.8); color: var(--brand-deep); }
.chip.active {
  background: linear-gradient(135deg, #e8f4fd 0%, #cfe7f7 100%);
  color: var(--brand-deep);
  border-color: rgba(255, 255, 255, 0.9);
  box-shadow: 0 8px 18px -12px rgba(94, 152, 192, 0.8), inset 0 1px 0 #fff;
}

/* ---------- 首页 Hero：乳白玻璃 + 果冻字母 ---------- */
.hero {
  border-radius: 26px;
  background:
    radial-gradient(760px 460px at 96% -30%, rgba(214, 238, 252, 0.9) 0%, rgba(214, 238, 252, 0) 68%),
    radial-gradient(620px 420px at -6% 126%, rgba(253, 240, 226, 0.85) 0%, rgba(253, 240, 226, 0) 70%),
    radial-gradient(560px 380px at 58% 134%, rgba(228, 244, 235, 0.85) 0%, rgba(228, 244, 235, 0) 70%),
    linear-gradient(135deg, #ffffff 0%, #f7fbff 50%, #eef7fd 100%);
  border: 1px solid rgba(255, 255, 255, 0.95);
  box-shadow: 0 34px 74px -38px rgba(86, 138, 178, 0.55), inset 0 1px 0 #fff;
  position: relative;
  isolation: isolate;
}
/* 轻微体积光：斜向柔光带 */
.hero::after {
  content: "";
  position: absolute;
  inset: -20% -10%;
  z-index: 0;
  pointer-events: none;
  background: linear-gradient(114deg,
    rgba(255, 255, 255, 0) 34%,
    rgba(255, 255, 255, 0.62) 46%,
    rgba(255, 255, 255, 0.18) 54%,
    rgba(255, 255, 255, 0) 62%);
  mix-blend-mode: screen;
}
.hero > * { position: relative; z-index: 1; }
.hero::before { display: none; }
.hero h1 { color: var(--text); font-size: 25px; letter-spacing: 0.2px; }
.hero-sub { color: var(--text-2); }
.hero-sub b { color: var(--brand-deep); }
.hero-chip {
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(255, 255, 255, 0.95);
  color: var(--text-2);
  box-shadow: 0 8px 18px -14px rgba(86, 138, 178, 0.7);
}
.hero-chip svg { color: var(--brand); }
.hero-actions .btn {
  background: rgba(255, 255, 255, 0.9);
  color: var(--brand-deep);
  border: 1px solid rgba(255, 255, 255, 0.95);
  box-shadow: 0 12px 24px -16px rgba(86, 138, 178, 0.75);
  backdrop-filter: blur(6px);
}
.hero-actions .btn:hover { background: #fff; transform: translateY(-1px); }
.hero-actions .btn.btn-solid {
  background: linear-gradient(135deg, #d8ecfa 0%, #b0d6ef 60%, #cfe7f7 100%);
  color: var(--brand-deep);
  border-color: rgba(255, 255, 255, 0.95);
  box-shadow: 0 16px 30px -16px rgba(94, 152, 192, 0.85), inset 0 1px 0 #fff;
}
.hero-actions .btn.btn-solid:hover {
  background: linear-gradient(135deg, #e4f2fc 0%, #bddcf2 60%, #d9ecf9 100%);
}

.goal-ring .track { stroke: rgba(148, 195, 226, 0.3); stroke-width: 11; }
.goal-ring .arc {
  stroke: #6aaed6;
  stroke-width: 11;
  filter: drop-shadow(0 4px 10px rgba(110, 174, 214, 0.55));
}
.goal-ring .ring-text { color: var(--text); }
.goal-ring .ring-pct { color: var(--brand-deep); }
.goal-ring .ring-sub { color: var(--text-3); }
[data-theme="dark"] .goal-ring .arc { stroke: #93c3e4; }

/* ---------- 果冻字母 + 几何小装饰（CSS 模拟 C4D 通透材质） ---------- */
.hero-art {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex: 0 0 auto;
  padding: 12px 10px;
  z-index: 1;
}
.jelly {
  position: relative;
  font-family: var(--font-jelly);
  font-weight: 800;
  font-size: 82px;
  line-height: 1;
  letter-spacing: -2px;
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
  filter: drop-shadow(0 18px 22px rgba(112, 162, 200, 0.38));
}
.jelly::before {
  content: attr(data-l);
  position: absolute;
  inset: 0;
  z-index: -1;
  color: rgba(160, 200, 228, 0.55);
  transform: translate(4px, 9px);
  filter: blur(6px);
}
.jelly-a {
  background-image: linear-gradient(162deg, #ffffff 0%, #e6f3fd 26%, #96c9ea 66%, #d9eefb 92%, #ffffff 100%);
  transform: rotate(-6deg) translateY(-6px);
}
.jelly-b {
  background-image: linear-gradient(162deg, #ffffff 0%, #fdf4e7 26%, #eec49a 66%, #fbe8d3 92%, #ffffff 100%);
  transform: rotate(4deg) translateY(9px);
}
.jelly-c {
  background-image: linear-gradient(162deg, #ffffff 0%, #eaf7ef 26%, #a5d8bf 66%, #dcf2e5 92%, #ffffff 100%);
  transform: rotate(-3deg) translateY(-2px);
}
.orb {
  position: absolute;
  border-radius: 50%;
  background: radial-gradient(circle at 32% 26%, #ffffff 0%, #eef8ff 34%, #cfe7f7 66%, #b6d8ef 100%);
  box-shadow: 0 14px 24px -10px rgba(120, 168, 205, 0.5), inset -5px -7px 14px rgba(160, 200, 228, 0.45), inset 4px 5px 10px rgba(255, 255, 255, 0.9);
}
.orb-1 { width: 26px; height: 26px; top: 0; right: 4px; }
.orb-2 {
  width: 16px; height: 16px; bottom: 4px; left: 0;
  background: radial-gradient(circle at 32% 26%, #ffffff 0%, #fdf6ee 36%, #f3d5b6 70%, #e8c4a1 100%);
}
.orb-3 {
  width: 11px; height: 11px; top: 46%; left: -8px;
  background: radial-gradient(circle at 32% 26%, #ffffff 0%, #f0faf4 36%, #c6e6d4 70%, #aedcc2 100%);
}
.deco-line {
  position: absolute;
  height: 1.5px;
  border-radius: 99px;
  background: linear-gradient(90deg, rgba(160, 200, 228, 0), rgba(160, 200, 228, 0.75), rgba(160, 200, 228, 0));
}
.deco-line-1 { width: 54px; top: -2px; left: 6%; transform: rotate(-16deg); }
.deco-line-2 { width: 38px; bottom: 4px; right: 0; transform: rotate(12deg); }
.deco-page {
  position: absolute;
  width: 28px;
  height: 38px;
  border-radius: 4px 9px 9px 4px;
  background: linear-gradient(150deg, #ffffff 0%, #f4faff 60%, #e6f2fb 100%);
  box-shadow: 0 12px 20px -10px rgba(120, 168, 205, 0.55), inset -1px 0 0 rgba(180, 215, 240, 0.8);
  transform: rotate(-16deg) translate(-10px, 10px);
  opacity: 0.9;
}
.deco-page-2 { transform: rotate(9deg) translate(10px, -12px); opacity: 0.72; }

/* ---------- 快捷入口 / 统计 / 语录 ---------- */
.quick-tile {
  background: var(--glass);
  border: 1px solid var(--glass-edge);
  box-shadow: var(--shadow), inset 0 1px 0 rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border-radius: 18px;
}
.quick-tile:hover {
  border-color: rgba(255, 255, 255, 0.98);
  box-shadow: 0 26px 50px -28px rgba(86, 138, 178, 0.6), inset 0 1px 0 #fff;
}
.quick-ico { border-radius: 13px; box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.9); }
.ico-violet { background: linear-gradient(140deg, #eaf5fd, #d3e9f8); color: #3d7fae; }
.ico-teal { background: linear-gradient(140deg, #eef8f2, #d8efdf); color: #4f8f78; }
.ico-amber { background: linear-gradient(140deg, #fdf6ec, #f8dcbe); color: #a1723f; }
.ico-red { background: linear-gradient(140deg, #fdf1f1, #f4d8d8); color: #a96363; }
.stat-ico { box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.9); }
.stat-card .num { color: var(--text); }

.quote-card {
  background:
    radial-gradient(420px 200px at 96% -20%, #e7f4fc 0%, rgba(231, 244, 252, 0) 70%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.9), rgba(250, 253, 255, 0.76));
  border: 1px solid var(--glass-edge);
  box-shadow: var(--shadow), inset 0 1px 0 #fff;
}
.quote-ico {
  background: linear-gradient(140deg, #ffffff, #eef6fc);
  color: #6aaed6;
  box-shadow: 0 10px 22px -14px rgba(86, 138, 178, 0.7), inset 0 1px 0 #fff;
}
.quote-tag {
  color: var(--brand-deep);
  background: rgba(255, 255, 255, 0.9);
  border-color: rgba(143, 195, 228, 0.55);
}

/* ---------- 词库 / 学习 / 测验等通用件 ---------- */
.badge { border: 1px solid rgba(255, 255, 255, 0.9); }
.lv-4 { background: rgba(168, 211, 239, 0.3); color: #2f6d9e; }
.lv-6 { background: rgba(182, 223, 200, 0.34); color: #3f7f68; }
.st-new { background: rgba(255, 255, 255, 0.8); color: var(--text-3); }
.st-learning { background: var(--warn-soft); color: var(--warn); }
.st-mastered { background: var(--success-soft); color: var(--success); }
[data-theme="dark"] .lv-4 { color: #a9d6f2; }
[data-theme="dark"] .lv-6 { color: #a9dfc7; }

.search-input { background: rgba(255, 255, 255, 0.86); border: 1px solid var(--border); }
.search-input:focus { border-color: rgba(143, 195, 228, 0.9); box-shadow: 0 0 0 4px rgba(143, 195, 228, 0.18); }
.word-row:hover { background: rgba(240, 248, 253, 0.85); }
.session-bar { background: rgba(219, 234, 245, 0.7); }
.session-bar > div { background: linear-gradient(90deg, #a8d3ef, #7fb8dd); }
.lp-bar { background: rgba(219, 234, 245, 0.72); }
.lp-bar > div { box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.6); }
.scope-card.special { background: linear-gradient(135deg, rgba(211, 233, 248, 0.5), rgba(216, 239, 223, 0.45)); }

.flashcard .face {
  background: var(--glass);
  border: 1px solid rgba(196, 218, 233, 0.7);
  box-shadow: 0 34px 70px -34px rgba(86, 138, 178, 0.5), inset 0 1px 0 #fff;
}
[data-theme="dark"] .flashcard .face { border-color: rgba(126, 160, 188, 0.22); }
.hl { background: rgba(248, 220, 190, 0.5); color: inherit; }
[data-theme="dark"] .hl { background: rgba(224, 180, 137, 0.24); color: #f0d3b4; }

.auth-input { background: rgba(255, 255, 255, 0.9); border: 1.5px solid var(--border); color: var(--text); }
.auth-input:focus { border-color: rgba(143, 195, 228, 0.95); box-shadow: 0 0 0 4px rgba(143, 195, 228, 0.2); }

/* ---------- 登录页：纯白玻璃 + 漂着的果冻字母 ---------- */
.auth-mask {
  background:
    radial-gradient(760px 520px at 12% -6%, #eaf6ff 0%, rgba(234, 246, 255, 0) 62%),
    radial-gradient(700px 460px at 92% 100%, #eef8f2 0%, rgba(238, 248, 242, 0) 62%),
    radial-gradient(560px 420px at 88% 4%, #fdf4e9 0%, rgba(253, 244, 233, 0) 64%),
    linear-gradient(160deg, #ffffff 0%, #f7fbff 52%, #edf5fc 100%);
}
.auth-card {
  background: var(--glass);
  border: 1px solid var(--glass-edge);
  border-radius: 26px;
  box-shadow: 0 40px 90px -44px rgba(86, 138, 178, 0.6), inset 0 1px 0 #fff;
  backdrop-filter: blur(16px);
}
.auth-tabs { background: rgba(238, 245, 250, 0.85); }
.auth-tab.active { background: #fff; color: var(--brand-deep); box-shadow: 0 8px 18px -12px rgba(86, 138, 178, 0.8); }
.auth-submit { border-radius: 14px; }
.auth-deco { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }
.auth-deco .jelly { position: absolute; opacity: 0.92; }
.auth-deco .jelly-a { left: 8%; top: 18%; font-size: 104px; transform: rotate(-10deg); }
.auth-deco .jelly-b { right: 9%; top: 24%; font-size: 84px; transform: rotate(8deg); }
.auth-deco .jelly-c { left: 16%; bottom: 12%; font-size: 72px; transform: rotate(5deg); }
.auth-deco .orb-1 { left: 22%; top: 9%; right: auto; }
.auth-deco .orb-2 { right: 15%; bottom: 20%; left: auto; width: 22px; height: 22px; }
.auth-deco .orb-3 { right: 25%; top: 13%; left: auto; width: 13px; height: 13px; }
.auth-deco .deco-line-1 { left: 6%; top: 62%; width: 70px; }
.auth-deco .deco-line-2 { right: 8%; top: 74%; width: 56px; }
.auth-deco .deco-page { left: 29%; top: 22%; }
.auth-deco .deco-page-2 { right: 21%; bottom: 11%; left: auto; top: auto; }

/* ---------- 账户菜单 / 弹窗 / 聊天：同一套玻璃质感 ---------- */
.acct-menu {
  background: var(--glass);
  border: 1px solid var(--glass-edge);
  box-shadow: var(--shadow-lg), inset 0 1px 0 #fff;
  backdrop-filter: blur(16px);
}
.modal { background: var(--glass); border: 1px solid var(--glass-edge); box-shadow: var(--shadow-lg), inset 0 1px 0 #fff; }
[data-theme="dark"] .acct-menu, [data-theme="dark"] .modal { box-shadow: var(--shadow-lg), inset 0 1px 0 rgba(255, 255, 255, 0.05); }
.msg.mine .msg-bubble { background: linear-gradient(135deg, #d8ecfa, #b3d8f0); color: var(--brand-deep); }
.msg.theirs .msg-bubble { background: rgba(255, 255, 255, 0.92); }

@media (max-width: 980px) {
  .hero-art { display: none; }
}
@media (max-width: 640px) {
  .hero { border-radius: 22px; }
  .hero h1 { font-size: 20px; }
}

/* ---------- 深色模式的玻璃 / Hero / 表单变体 ---------- */
[data-theme="dark"] .hero {
  background:
    radial-gradient(760px 460px at 96% -30%, rgba(58, 92, 118, 0.75) 0%, rgba(58, 92, 118, 0) 68%),
    radial-gradient(620px 420px at -6% 126%, rgba(96, 78, 60, 0.5) 0%, rgba(96, 78, 60, 0) 70%),
    radial-gradient(560px 380px at 58% 134%, rgba(52, 92, 74, 0.5) 0%, rgba(52, 92, 74, 0) 70%),
    linear-gradient(135deg, #1d2a36 0%, #1a2531 52%, #182430 100%);
  border-color: rgba(126, 160, 188, 0.2);
  box-shadow: 0 34px 74px -38px rgba(0, 0, 0, 0.8), inset 0 1px 0 rgba(255, 255, 255, 0.05);
}
[data-theme="dark"] .hero::after {
  background: linear-gradient(114deg,
    rgba(255, 255, 255, 0) 34%,
    rgba(180, 214, 240, 0.14) 46%,
    rgba(180, 214, 240, 0.05) 54%,
    rgba(255, 255, 255, 0) 62%);
}
[data-theme="dark"] .hero h1 { color: #eaf2f9; }
[data-theme="dark"] .hero-sub { color: #b3c4d3; }
[data-theme="dark"] .hero-sub b { color: #d5e9f8; }
[data-theme="dark"] .hero-chip {
  background: rgba(32, 46, 60, 0.78);
  border-color: rgba(126, 160, 188, 0.22);
  color: #b3c4d3;
  box-shadow: none;
}
[data-theme="dark"] .hero-chip svg { color: #93c3e4; }
[data-theme="dark"] .hero-actions .btn {
  background: rgba(32, 46, 60, 0.72);
  border-color: rgba(126, 160, 188, 0.24);
  color: #d5e9f8;
  box-shadow: none;
}
[data-theme="dark"] .hero-actions .btn:hover { background: rgba(44, 62, 80, 0.9); }
[data-theme="dark"] .hero-actions .btn.btn-solid {
  background: linear-gradient(135deg, #405f78 0%, #4e7c99 60%, #3d6076 100%);
  color: #eef7ff;
  border-color: rgba(146, 190, 220, 0.35);
  box-shadow: 0 16px 30px -18px rgba(0, 0, 0, 0.9), inset 0 1px 0 rgba(255, 255, 255, 0.12);
}
[data-theme="dark"] .hero-actions .btn.btn-solid:hover { background: linear-gradient(135deg, #4b6d88 0%, #58879f 60%, #466a83 100%); }
[data-theme="dark"] .deco-page {
  background: linear-gradient(150deg, #334a5e 0%, #2a3d4e 60%, #253646 100%);
  box-shadow: 0 12px 20px -10px rgba(0, 0, 0, 0.7), inset -1px 0 0 rgba(146, 190, 220, 0.25);
  opacity: 0.7;
}
[data-theme="dark"] .deco-line { background: linear-gradient(90deg, rgba(146, 190, 220, 0), rgba(146, 190, 220, 0.45), rgba(146, 190, 220, 0)); }
[data-theme="dark"] .orb { box-shadow: 0 14px 24px -10px rgba(0, 0, 0, 0.7), inset -5px -7px 14px rgba(0, 0, 0, 0.25), inset 4px 5px 10px rgba(255, 255, 255, 0.18); }
[data-theme="dark"] .jelly { filter: drop-shadow(0 18px 22px rgba(0, 0, 0, 0.55)); }
[data-theme="dark"] .jelly-a { background-image: linear-gradient(162deg, #f2fbff 0%, #bfe0f5 30%, #6ea8cf 70%, #a8d0ea 94%, #eaf6ff 100%); }
[data-theme="dark"] .jelly-b { background-image: linear-gradient(162deg, #fff8ee 0%, #f3d3ae 30%, #c99763 70%, #e8c39c 94%, #fff3e4 100%); }
[data-theme="dark"] .jelly-c { background-image: linear-gradient(162deg, #f2fdf7 0%, #c3e7d3 30%, #6fa98c 70%, #a9d8bf 94%, #eafaf1 100%); }
[data-theme="dark"] .goal-ring .track { stroke: rgba(146, 190, 220, 0.18); }
[data-theme="dark"] .goal-ring .ring-pct { color: #d5e9f8; }
[data-theme="dark"] .goal-ring .ring-sub { color: #8ea4b6; }

[data-theme="dark"] .quote-card {
  background:
    radial-gradient(420px 200px at 96% -20%, rgba(58, 92, 118, 0.4) 0%, rgba(58, 92, 118, 0) 70%),
    linear-gradient(135deg, rgba(32, 44, 56, 0.9), rgba(27, 37, 48, 0.82));
  border-color: rgba(126, 160, 188, 0.18);
}
[data-theme="dark"] .quote-ico { background: rgba(40, 56, 70, 0.9); color: #93c3e4; }
[data-theme="dark"] .quote-tag { background: rgba(40, 56, 70, 0.9); color: #a9d6f2; border-color: rgba(146, 190, 220, 0.3); }

[data-theme="dark"] .btn-primary {
  background: linear-gradient(135deg, #405f78 0%, #4a7592 55%, #3d6076 100%);
  color: #eef7ff;
  border-color: rgba(146, 190, 220, 0.3);
  box-shadow: 0 12px 26px -16px rgba(0, 0, 0, 0.85), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}
[data-theme="dark"] .btn-ghost { background: rgba(40, 56, 70, 0.7); color: #b3c4d3; border-color: rgba(126, 160, 188, 0.24); }
[data-theme="dark"] .btn-ghost:hover { background: rgba(50, 68, 84, 0.9); color: #e2ebf3; }
[data-theme="dark"] .nav-btn:hover { background: rgba(40, 56, 70, 0.7); color: #e2ebf3; }
[data-theme="dark"] .nav-btn.active {
  color: #d5e9f8;
  background: linear-gradient(135deg, #2c4257 0%, #35526b 100%);
  box-shadow: 0 10px 20px -14px rgba(0, 0, 0, 0.9), inset 0 1px 0 rgba(255, 255, 255, 0.08);
}
[data-theme="dark"] .user-chip { background: rgba(40, 56, 70, 0.72); border-color: rgba(126, 160, 188, 0.22); }
[data-theme="dark"] .chip { background: rgba(40, 56, 70, 0.66); color: #b3c4d3; border-color: rgba(126, 160, 188, 0.22); }
[data-theme="dark"] .chip:hover { color: #d5e9f8; border-color: rgba(146, 190, 220, 0.5); }
[data-theme="dark"] .chip.active {
  background: linear-gradient(135deg, #2c4257 0%, #35526b 100%);
  color: #d5e9f8;
  border-color: rgba(146, 190, 220, 0.3);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}
[data-theme="dark"] .search-input { background: rgba(32, 46, 60, 0.85); color: #e2ebf3; }
[data-theme="dark"] .word-row:hover { background: rgba(44, 62, 80, 0.55); }
[data-theme="dark"] .session-bar { background: rgba(52, 72, 90, 0.7); }

[data-theme="dark"] .auth-mask {
  background:
    radial-gradient(760px 520px at 12% -6%, #1a2a38 0%, rgba(26, 42, 56, 0) 62%),
    radial-gradient(700px 460px at 92% 100%, #16261f 0%, rgba(22, 38, 31, 0) 62%),
    linear-gradient(160deg, #101820 0%, #131c25 55%, #16202a 100%);
}
[data-theme="dark"] .auth-card { border-color: rgba(126, 160, 188, 0.2); box-shadow: 0 40px 90px -44px rgba(0, 0, 0, 0.9), inset 0 1px 0 rgba(255, 255, 255, 0.05); }
[data-theme="dark"] .auth-tabs { background: rgba(28, 40, 52, 0.9); }
[data-theme="dark"] .auth-tab.active { background: rgba(46, 64, 82, 0.95); color: #d5e9f8; box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08); }
[data-theme="dark"] .auth-input { background: rgba(32, 46, 60, 0.85); color: #e2ebf3; border-color: rgba(126, 160, 188, 0.24); }
[data-theme="dark"] .msg.theirs .msg-bubble { background: rgba(40, 56, 70, 0.92); }
[data-theme="dark"] .msg.mine .msg-bubble { background: linear-gradient(135deg, #35526b, #40617c); color: #eaf4fc; }
[data-theme="dark"] .ico-violet { background: linear-gradient(140deg, #2b3f52, #334a5e); color: #a9d6f2; }
[data-theme="dark"] .ico-teal { background: linear-gradient(140deg, #263a33, #2d453c); color: #a9dfc7; }
[data-theme="dark"] .ico-amber { background: linear-gradient(140deg, #3a3227, #443a2c); color: #ecc79f; }
[data-theme="dark"] .ico-red { background: linear-gradient(140deg, #3a2b2b, #453333); color: #e8b3b3; }

/* ---------- 品牌字：去掉徽标后的字形打磨（CET 保持原样） ---------- */
.logo { gap: 0; }
.logo-text, .auth-logo span {
  font-family: var(--font-jelly);
  font-weight: 500;
  letter-spacing: -0.3px;
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
.logo-text { font-size: 20.5px; }
.auth-logo { gap: 0; margin-bottom: 10px; }
.auth-logo span { font-size: 25px; }
[data-theme="dark"] .logo-text, [data-theme="dark"] .auth-logo span { color: #e6eef6; }