/* v3.css — 交互式首页（docs/design-v3.md §4 / §5）
 * 叠加在 site.css 之上，仅在 <body class="v3"> 的页面生效；全部规则以 .v3 作用域开头，
 * 不改动 site.css 的任何既有规则，不影响线上其他页面。
 * 令牌：背景 #0c1310 · 面板 #121c17 · 毡 #1f5a3f→#123a29 · 黄铜金 #d4a94f · 文字 #ece6d6 / #9fb0a6
 * 评级：正确 #4cc38a ✓ · 可议 #e0b450 △ · 失误 #e06c5a ✗
 * 字号阶梯 12/14/16/20/28/40；间距 4 的倍数；圆角 卡片 14 · 按钮 10 · 徽章 999；动效 150–250ms。 */

.v3 {
  --bg: #0c1310; --bg-deep: #080d0b;
  --panel: #121c17; --panel-2: #17241d; --panel-3: #1d2b24;
  --hair: rgba(236, 230, 214, .08); --hair-2: rgba(236, 230, 214, .14);
  --ink: #ece6d6; --ink-dim: #9fb0a6; --ink-faint: #82948a;
  --brass: #d4a94f; --brass-hi: #e8c477; --brass-deep: #9c7a35; --brass-soft: rgba(212, 169, 79, .12);
  --felt-a: #1f5a3f; --felt-b: #123a29;
  --g-good: #4cc38a; --g-ok: #e0b450; --g-bad: #e06c5a;
  --card-face: #fbf8f1; --card-face-2: #efe8d9; --card-ink: #18211c; --card-red: #c8322a;
  --f-ui: Inter, -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Noto Sans SC', 'Hiragino Sans GB', 'Microsoft YaHei', system-ui, sans-serif;
  --r-card: 14px; --r-btn: 10px;
  --ease: cubic-bezier(.2, .7, .2, 1);
  --t: 200ms;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--f-ui);
  font-size: 16px; line-height: 1.6;
  font-feature-settings: 'cv11', 'ss01';
}
.v3 .tnum, .v3 .num { font-family: var(--f-ui); font-variant-numeric: tabular-nums; }
.v3 .wrap { max-width: 1120px; padding: 0 16px; }
.v3 a:hover { text-decoration: none; }
.v3 section { padding: 0; }

/* ---------- 按钮 ---------- */
.v3 .v3-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 48px; padding: 0 20px; border-radius: var(--r-btn);
  font-size: 16px; font-weight: 600; line-height: 1.2; text-align: center;
  border: 1px solid var(--hair-2); color: var(--ink); background: var(--panel-2);
  transition: transform 150ms var(--ease), box-shadow 200ms var(--ease), border-color 200ms var(--ease), background-color 200ms var(--ease);
  cursor: pointer; -webkit-tap-highlight-color: transparent;
}
.v3 .v3-btn:hover { border-color: var(--brass-deep); text-decoration: none; }
.v3 .v3-btn:active { transform: scale(.98); }
.v3 .v3-btn-primary {
  color: #231b0a; border-color: #e2bb66;
  background: linear-gradient(180deg, #e7c476 0%, var(--brass) 55%, #c79a3f 100%);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .35), 0 6px 18px -6px rgba(212, 169, 79, .55);
}
.v3 .v3-btn-primary:hover { border-color: #f0cf88; box-shadow: inset 0 1px 0 rgba(255, 255, 255, .4), 0 8px 24px -6px rgba(212, 169, 79, .7); }
.v3 .v3-btn-ghost { background: transparent; color: var(--brass); border-color: rgba(212, 169, 79, .45); }
.v3 .v3-btn-ghost:hover { background: var(--brass-soft); border-color: var(--brass); }
.v3 .v3-btn-sm { min-height: 44px; padding: 0 14px; font-size: 14px; }
.v3 .v3-btn-block { display: flex; width: 100%; }

/* ---------- 顶栏 ---------- */
.v3 .v3-head {
  position: sticky; top: 0; z-index: 30;
  background: rgba(12, 19, 16, .84);
  -webkit-backdrop-filter: saturate(140%) blur(10px); backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--hair);
}
.v3 .v3-head .wrap { display: flex; align-items: center; gap: 8px; height: 56px; }
.v3 .v3-brand { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; color: var(--ink); min-width: 0; margin-right: auto; }
.v3 .v3-brand img { width: 28px; height: 28px; flex: none; }
.v3 .v3-brand b { font-size: 16px; font-weight: 700; letter-spacing: .02em; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.v3 .v3-brand small { display: none; color: var(--ink-faint); font-size: 12px; font-weight: 500; letter-spacing: .14em; text-transform: uppercase; white-space: nowrap; }
.v3 .v3-nav { display: flex; align-items: center; gap: 4px; flex: none; }
.v3 .v3-nav .nav-link {
  display: none; align-items: center; min-height: 44px; padding: 0 12px; border-radius: var(--r-btn);
  color: var(--ink-dim); font-size: 14px; white-space: nowrap;
}
.v3 .v3-nav .nav-link:hover { color: var(--ink); background: rgba(255, 255, 255, .04); }
.v3 .v3-lang {
  display: inline-flex; align-items: center; justify-content: center; min-height: 44px; min-width: 44px;
  padding: 0 10px; border-radius: var(--r-btn); color: var(--ink-dim); font-size: 14px;
  border: 1px solid var(--hair-2); white-space: nowrap;
}
.v3 .v3-lang:hover { color: var(--ink); border-color: var(--brass-deep); }
.v3 .v3-head .v3-btn-sm { white-space: nowrap; }

/* ---------- 首屏 ---------- */
.v3 .v3-hero {
  position: relative; overflow: hidden;
  padding: 16px 0 28px;
  background:
    radial-gradient(70% 46% at 50% 0%, rgba(31, 90, 63, .55) 0%, rgba(31, 90, 63, 0) 100%),
    var(--bg);
}
.v3 .v3-hero::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(212, 169, 79, .25), transparent);
}
.v3 .hero-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 16px; align-items: center; }
.v3 .hero-copy { text-align: center; min-width: 0; }
.v3 .eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--brass); font-size: 12px; font-weight: 600; letter-spacing: .12em; text-transform: uppercase;
}
.v3 .eyebrow::before { content: ''; width: 16px; height: 1px; background: currentColor; opacity: .7; }
.v3 .v3-hero h1, .v3 .sec-head h2, .v3 .hero-sub { text-wrap: balance; }
.v3 .v3-hero h1 {
  font-family: var(--f-ui); font-size: 28px; line-height: 1.2; font-weight: 700; letter-spacing: .01em;
  margin: 4px 0 4px; color: var(--ink);
}
.v3 .hero-sub { color: var(--ink-dim); font-size: 14px; line-height: 1.55; max-width: 30em; margin: 0 auto; }
.v3 .hero-sub b { color: var(--ink); font-weight: 600; }
.v3 .hero-copy .eyebrow { display: none; }
.v3 .hero-legend { display: none; }
.v3 .hero-legend li { display: flex; align-items: center; gap: 12px; color: var(--ink-dim); font-size: 14px; }
.v3 .hero-legend b { color: var(--ink); font-weight: 600; }
.v3 .lg {
  display: inline-flex; align-items: center; justify-content: center; flex: none;
  width: 24px; height: 24px; border-radius: 999px; font-size: 13px; font-weight: 800; line-height: 1;
}
.v3 .lg.g-good { background: var(--g-good); color: #0b2418; }
.v3 .lg.g-ok { background: var(--g-ok); color: #2a1f06; }
.v3 .lg.g-mistake { background: var(--g-bad); color: #2a0d08; }
.v3 .hero-trust { display: none; color: var(--ink-faint); font-size: 12px; letter-spacing: .02em; }

/* ---------- 题卡 ---------- */
.v3 .spot {
  position: relative; width: 100%; max-width: 480px; margin: 0 auto;
  border-radius: var(--r-card); overflow: hidden;
  background: var(--panel);
  border: 1px solid rgba(212, 169, 79, .22);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, .04) inset,
    0 30px 60px -28px rgba(0, 0, 0, .85),
    0 0 0 6px rgba(212, 169, 79, .03);
}
.v3 .spot-felt {
  position: relative; padding: 12px 16px 16px;
  background:
    radial-gradient(120% 90% at 50% 0%, rgba(255, 255, 255, .06) 0%, rgba(255, 255, 255, 0) 55%),
    radial-gradient(130% 110% at 50% 20%, var(--felt-a) 0%, #184a33 50%, var(--felt-b) 100%);
  box-shadow: inset 0 -16px 24px -16px rgba(0, 0, 0, .55);
}
.v3 .spot-felt::before {
  content: ''; position: absolute; inset: 0; pointer-events: none; opacity: .5;
  background: repeating-linear-gradient(135deg, rgba(255, 255, 255, .012) 0 2px, transparent 2px 5px);
}
.v3 .spot-felt::after {
  content: ''; position: absolute; left: 16px; right: 16px; bottom: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(212, 169, 79, .45), transparent);
}
.v3 .spot-felt > * { position: relative; }
.v3 .spot-top { display: flex; align-items: center; justify-content: space-between; gap: 8px; min-height: 24px; }
.v3 .spot-tag {
  display: inline-flex; align-items: center; gap: 6px; height: 24px; padding: 0 10px; border-radius: 999px;
  font-size: 12px; font-weight: 600; letter-spacing: .04em; color: #231b0a;
  background: linear-gradient(180deg, #e7c476, var(--brass));
}
.v3 .spot-meta { color: rgba(236, 230, 214, .78); font-size: 12px; font-weight: 500; letter-spacing: .02em; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.v3 .spot-board { display: flex; justify-content: center; gap: 6px; margin: 12px 0 12px; }
.v3 .pk-slot {
  width: 40px; height: 56px; border-radius: 6px;
  border: 1px dashed rgba(236, 230, 214, .16); background: rgba(0, 0, 0, .1);
}
.v3 .spot-hero { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 8px; }
.v3 .spot-hole { display: flex; gap: 6px; justify-content: center; }
.v3 .spot-hole .pk:first-child { transform: rotate(-3deg) translateY(2px); }
.v3 .spot-hole .pk:last-child { transform: rotate(3deg) translateY(2px); }
.v3 .spot-pos { justify-self: start; display: flex; flex-direction: column; align-items: center; gap: 2px; }
.v3 .pos-you { font-size: 12px; color: rgba(236, 230, 214, .7); letter-spacing: .06em; }
.v3 .pos-name {
  display: inline-flex; align-items: center; justify-content: center; min-width: 44px; height: 28px; padding: 0 8px;
  border-radius: 999px; font-size: 14px; font-weight: 700; letter-spacing: .04em; color: var(--ink);
  background: rgba(0, 0, 0, .3); border: 1px solid rgba(212, 169, 79, .5);
}
.v3 .spot-pot { justify-self: end; display: flex; flex-direction: column; align-items: flex-end; gap: 4px; }
.v3 .pot-item { display: flex; flex-direction: column; align-items: flex-end; line-height: 1.15; }
.v3 .pot-item .k { font-size: 12px; color: rgba(236, 230, 214, .7); letter-spacing: .04em; }
.v3 .pot-item .v { font-size: 16px; font-weight: 700; color: var(--brass-hi); font-variant-numeric: tabular-nums; }

/* 扑克牌 */
.v3 .pk {
  position: relative; display: inline-block; flex: none;
  width: 40px; height: 56px; border-radius: 6px;
  background: linear-gradient(180deg, var(--card-face) 0%, var(--card-face-2) 100%);
  color: var(--card-ink);
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, .1), inset 0 1px 0 rgba(255, 255, 255, .8), 0 4px 10px -2px rgba(0, 0, 0, .5);
  font-variant-numeric: tabular-nums;
}
.v3 .pk.red { color: var(--card-red); }
.v3 .pk-r { position: absolute; top: 4px; left: 5px; font-size: 18px; font-weight: 800; line-height: 1; letter-spacing: -.04em; }
.v3 .pk-s { position: absolute; top: 23px; left: 5px; font-size: 12px; line-height: 1; }
.v3 .pk-big { position: absolute; right: 4px; bottom: 3px; font-size: 20px; line-height: 1; }
.v3 .pk-lg { width: 60px; height: 84px; border-radius: 8px; }
.v3 .pk-lg .pk-r { top: 6px; left: 7px; font-size: 26px; }
.v3 .pk-lg .pk-s { top: 34px; left: 8px; font-size: 16px; }
.v3 .pk-lg .pk-big { right: 6px; bottom: 5px; font-size: 32px; }
.v3 .pk-back {
  background: linear-gradient(135deg, #7d2f35 0%, #5d2126 100%);
  box-shadow: inset 0 0 0 2px rgba(246, 241, 230, .85), inset 0 0 0 4px #5d2126, 0 4px 10px -2px rgba(0, 0, 0, .5);
}

/* 行动概括 */
.v3 .spot-hist { display: flex; align-items: baseline; gap: 8px; padding: 12px 16px 0; margin: 0; font-size: 14px; color: var(--ink); line-height: 1.5; }
.v3 .hist-vs {
  flex: none; font-size: 12px; font-weight: 600; color: var(--ink-dim); letter-spacing: .04em;
  border: 1px solid var(--hair-2); border-radius: 999px; padding: 0 8px; line-height: 20px;
}

/* 选项 */
.v3 .spot-opts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; padding: 12px 16px 16px; }
.v3 .spot-opts.n2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.v3 .spot-opts.n4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.v3 .opt {
  position: relative; display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  min-height: 52px; padding: 0 8px; border-radius: var(--r-btn);
  font-size: 16px; font-weight: 600; color: var(--ink); white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  background: linear-gradient(180deg, var(--panel-3) 0%, var(--panel-2) 100%);
  border: 1px solid var(--hair-2);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .05), 0 2px 6px -2px rgba(0, 0, 0, .5);
  transition: transform 150ms var(--ease), border-color 200ms var(--ease), background-color 200ms var(--ease), opacity 200ms var(--ease);
  -webkit-tap-highlight-color: transparent; font-variant-numeric: tabular-nums;
}
.v3 .opt:hover:not(:disabled) { border-color: var(--brass); }
.v3 .opt:active:not(:disabled) { transform: scale(.97); }
.v3 .opt:disabled { cursor: default; }
.v3 .is-answered .opt { opacity: .45; }
.v3 .is-answered .opt.is-pick, .v3 .is-answered .opt.is-best { opacity: 1; }
.v3 .opt.is-best { border: 1px dashed var(--g-good); box-shadow: none; color: var(--g-good); background: rgba(76, 195, 138, .06); }
.v3 .opt.is-pick.g-good { border-color: var(--g-good); background: rgba(76, 195, 138, .14); box-shadow: inset 0 0 0 1px var(--g-good); }
.v3 .opt.is-pick.g-ok { border-color: var(--g-ok); background: rgba(224, 180, 80, .13); box-shadow: inset 0 0 0 1px var(--g-ok); }
.v3 .opt.is-pick.g-mistake { border-color: var(--g-bad); background: rgba(224, 108, 90, .13); box-shadow: inset 0 0 0 1px var(--g-bad); }
.v3 .opt-ic { font-weight: 800; }
.v3 .g-good .opt-ic { color: var(--g-good); }
.v3 .g-ok .opt-ic { color: var(--g-ok); }
.v3 .g-mistake .opt-ic { color: var(--g-bad); }

/* 骨架（数据到达前） */
.v3 .spot-skel .pk { opacity: .9; }
.v3 .skel-line { display: block; height: 14px; width: 62%; margin: 16px 16px 0; border-radius: 999px; background: rgba(255, 255, 255, .06); }
.v3 .skel-opt { min-height: 52px; border-radius: var(--r-btn); background: rgba(255, 255, 255, .05); border: 1px solid var(--hair); }
.v3 .spot noscript p { padding: 0 16px 16px; color: var(--ink-dim); font-size: 14px; }

/* 结果 */
.v3 .spot-result:empty { display: none; }
.v3 .res {
  padding: 16px; border-top: 1px solid var(--hair);
  background: linear-gradient(180deg, rgba(0, 0, 0, .14), rgba(0, 0, 0, 0) 40%);
  animation: v3-rise 220ms var(--ease) both;
}
@keyframes v3-rise { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.v3 .res-grade { display: grid; grid-template-columns: auto auto 1fr; align-items: center; gap: 4px 8px; }
.v3 .res-icon {
  display: inline-flex; align-items: center; justify-content: center; width: 28px; height: 28px; border-radius: 999px;
  font-size: 16px; font-weight: 800; line-height: 1;
}
.v3 .res-label { font-size: 20px; font-weight: 700; line-height: 1.2; }
.v3 .res-why { color: var(--ink-dim); font-size: 14px; line-height: 1.4; min-width: 0; }
.v3 .res-grade.g-good .res-icon { color: #0b2418; background: var(--g-good); }
.v3 .res-grade.g-good .res-label { color: var(--g-good); }
.v3 .res-grade.g-ok .res-icon { color: #2a1f06; background: var(--g-ok); }
.v3 .res-grade.g-ok .res-label { color: var(--g-ok); }
.v3 .res-grade.g-mistake .res-icon { color: #2a0d08; background: var(--g-bad); }
.v3 .res-grade.g-mistake .res-label { color: var(--g-bad); }
.v3 .res-best { display: flex; align-items: baseline; gap: 8px; margin-top: 12px; }
.v3 .res-best .k { font-size: 12px; color: var(--ink-faint); letter-spacing: .06em; }
.v3 .res-best .v { font-size: 16px; color: var(--brass-hi); font-weight: 700; }
.v3 .res-freq { list-style: none; margin: 8px 0 0; padding: 0; display: grid; gap: 6px; }
.v3 .fq { display: grid; grid-template-columns: 7.5em minmax(0, 1fr) 3em; align-items: center; gap: 8px; font-size: 14px; }
.v3 .fq-name { color: var(--ink-dim); display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; }
.v3 .fq.is-best .fq-name { color: var(--ink); font-weight: 600; }
.v3 .fq-you {
  font-size: 12px; line-height: 18px; padding: 0 6px; border-radius: 999px; color: var(--ink);
  background: rgba(255, 255, 255, .08); font-weight: 500;
}
.v3 .fq-bar { position: relative; height: 8px; border-radius: 999px; background: rgba(255, 255, 255, .06); overflow: hidden; }
.v3 .fq-bar i { position: absolute; left: 0; top: 0; bottom: 0; width: 0; border-radius: 999px; background: rgba(159, 176, 166, .55); transition: width 250ms var(--ease); }
.v3 .fq.is-best .fq-bar i { background: linear-gradient(90deg, var(--brass-deep), var(--brass-hi)); }
.v3 .fq-pct { text-align: right; color: var(--ink-dim); font-variant-numeric: tabular-nums; }
.v3 .fq.is-best .fq-pct { color: var(--brass-hi); font-weight: 700; }
.v3 .res-explain {
  margin: 12px 0 0; padding: 8px 0 8px 12px; border-left: 2px solid rgba(212, 169, 79, .55);
  font-size: 14px; line-height: 1.65; color: var(--ink);
}
.v3 .res-cta { display: grid; grid-template-columns: minmax(0, 1fr); gap: 8px; margin-top: 16px; }
.v3 .res-share { display: flex; align-items: center; flex-wrap: wrap; gap: 4px 8px; margin-top: 4px; }
.v3 .share-btn {
  display: inline-flex; align-items: center; gap: 6px; min-height: 44px; padding: 0 4px;
  color: var(--ink-dim); font-size: 14px; font-weight: 500;
}
.v3 .share-btn::before {
  content: ''; width: 14px; height: 14px; flex: none;
  background: currentColor;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M10 13a5 5 0 0 0 7.5.5l3-3a5 5 0 0 0-7-7l-1.7 1.7'/%3E%3Cpath d='M14 11a5 5 0 0 0-7.5-.5l-3 3a5 5 0 0 0 7 7l1.7-1.7'/%3E%3C/svg%3E") center / contain no-repeat;
          mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M10 13a5 5 0 0 0 7.5.5l3-3a5 5 0 0 0-7-7l-1.7 1.7'/%3E%3Cpath d='M14 11a5 5 0 0 0-7.5-.5l-3 3a5 5 0 0 0 7 7l1.7-1.7'/%3E%3C/svg%3E") center / contain no-repeat;
}
.v3 .share-btn:hover { color: var(--ink); }
.v3 .share-msg { font-size: 12px; color: var(--ink-faint); word-break: break-all; }
.v3 .share-msg.ok { color: var(--g-good); }

/* ---------- 通用区块 ---------- */
.v3 .v3-sec { padding: 28px 0; border-top: 1px solid var(--hair); }
.v3 .v3-sec-alt { background: linear-gradient(180deg, var(--bg-deep), var(--bg)); }
.v3 .sec-head { margin: 0 auto 16px; max-width: 36em; text-align: center; }
.v3 .sec-head .eyebrow { display: none; }
.v3 .sec-head h2 { font-size: 20px; line-height: 1.3; font-weight: 700; color: var(--ink); margin: 4px 0 4px; }
.v3 .sec-head p { color: var(--ink-dim); font-size: 14px; margin: 0; }

/* 三种练法：手机为横向吸附滑动（露出下一张），≥720px 三列 */
.v3 .modes {
  display: grid; grid-auto-flow: column; grid-auto-columns: 82%; gap: 12px;
  overflow-x: auto; scroll-snap-type: x mandatory; -webkit-overflow-scrolling: touch;
  margin: 0 -16px; padding: 0 16px 4px; scroll-padding: 0 16px; scrollbar-width: none;
}
.v3 .modes::-webkit-scrollbar { display: none; }
.v3 .mode { scroll-snap-align: start; }
.v3 .modes-hint { margin: 8px 0 0; text-align: center; color: var(--ink-faint); font-size: 12px; }
.v3 .mode {
  display: grid; grid-template-columns: minmax(0, 1fr); gap: 12px;
  padding: 16px; border-radius: var(--r-card); background: var(--panel); border: 1px solid var(--hair);
}
.v3 .mode-head { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.v3 .mode h3 { font-size: 16px; font-weight: 700; color: var(--ink); margin: 0; }
.v3 .mode-key { font-size: 12px; color: var(--brass); letter-spacing: .08em; text-transform: uppercase; font-weight: 600; }
.v3 .mode p { margin: 0; color: var(--ink-dim); font-size: 14px; line-height: 1.5; flex-basis: 100%; }
.v3 .demo {
  border-radius: 10px; padding: 12px; min-width: 0;
  background: radial-gradient(120% 140% at 50% 0%, #174832 0%, #10301f 100%);
  border: 1px solid rgba(212, 169, 79, .16);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .04);
  font-size: 12px;
}
/* 引导：教练提示条 + 行动按钮（推荐项细描边） */
.v3 .d-coach {
  display: flex; align-items: center; gap: 8px; padding: 8px 10px; border-radius: 8px;
  background: rgba(12, 19, 16, .72); border: 1px solid rgba(212, 169, 79, .35); color: var(--ink); font-size: 12px;
}
.v3 .d-coach .dot { width: 6px; height: 6px; border-radius: 999px; background: var(--brass); flex: none; box-shadow: 0 0 0 3px rgba(212, 169, 79, .2); }
.v3 .d-coach b { color: var(--brass-hi); font-weight: 700; }
.v3 .d-coach .why { margin-left: auto; color: var(--brass); white-space: nowrap; }
.v3 .d-acts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 6px; margin-top: 8px; }
.v3 .d-act {
  display: flex; align-items: center; justify-content: center; height: 28px; border-radius: 7px;
  background: #222d27; border: 1px solid #2e3b34; font-weight: 700; font-size: 12px;
}
.v3 .d-act.fold { color: #d06363; }
.v3 .d-act.call { color: #62b97e; }
.v3 .d-act.raise { background: var(--brass); color: #26200f; border-color: var(--brass); box-shadow: 0 0 0 2px rgba(12, 19, 16, .9), 0 0 0 3px var(--brass); }
/* 实战：本手点评 */
.v3 .d-review { background: rgba(12, 19, 16, .72); border: 1px solid var(--hair-2); border-radius: 8px; padding: 8px 10px; }
.v3 .d-review-h { color: var(--brass); font-weight: 700; letter-spacing: .08em; font-size: 12px; margin-bottom: 4px; }
.v3 .d-row { display: grid; grid-template-columns: 3.5em minmax(0, 1fr) auto; gap: 8px; align-items: center; line-height: 22px; color: var(--ink); }
.v3 .d-row .st { color: var(--ink-faint); }
.v3 .d-row .gr { font-weight: 700; }
.v3 .gr.good { color: var(--g-good); } .v3 .gr.ok { color: var(--g-ok); } .v3 .gr.bad { color: var(--g-bad); }
/* 专项：进度 + 题型 */
.v3 .d-drill-top { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.v3 .d-chip { padding: 2px 10px; border-radius: 999px; border: 1px solid rgba(212, 169, 79, .5); color: var(--brass-hi); background: rgba(12, 19, 16, .6); font-weight: 600; white-space: nowrap; }
.v3 .d-count { color: var(--ink-dim); font-variant-numeric: tabular-nums; white-space: nowrap; }
.v3 .d-prog { height: 6px; border-radius: 999px; background: rgba(0, 0, 0, .35); margin: 8px 0; overflow: hidden; }
.v3 .d-prog i { display: block; height: 100%; width: 30%; border-radius: 999px; background: linear-gradient(90deg, var(--brass-deep), var(--brass-hi)); }
.v3 .d-dots { display: flex; gap: 6px; }
.v3 .d-dots span {
  width: 22px; height: 22px; border-radius: 999px; display: inline-flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 800; background: rgba(0, 0, 0, .3); color: var(--ink-faint);
}
.v3 .d-dots .good { background: var(--g-good); color: #0b2418; }
.v3 .d-dots .ok { background: var(--g-ok); color: #2a1f06; }
.v3 .d-dots .bad { background: var(--g-bad); color: #2a0d08; }

/* AI 复盘示例（与训练场 .ai-rv 一致的卡片语言） */
.v3 .ai-demo { max-width: 680px; margin: 0 auto; }
.v3 .ai-ctx { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 6px 8px; margin-bottom: 12px; color: var(--ink-dim); font-size: 12px; }
.v3 .ai-ctx .pk { width: 28px; height: 38px; border-radius: 5px; }
.v3 .ai-ctx .pk .pk-r { font-size: 13px; top: 3px; left: 4px; }
.v3 .ai-ctx .pk .pk-s { display: none; }
.v3 .ai-ctx .pk .pk-big { font-size: 14px; right: 3px; bottom: 2px; }
.v3 .ai-ctx .sep { width: 1px; height: 14px; background: var(--hair-2); }
.v3 .ai-rv {
  background: #222d27; border: 1px solid #a87f2e; border-radius: 10px; padding: 12px 16px;
  font-size: 14px; line-height: 1.65; box-shadow: 0 20px 40px -24px rgba(0, 0, 0, .8);
}
.v3 .ai-rv-head { font-size: 12px; font-weight: 600; color: var(--brass); letter-spacing: .08em; margin-bottom: 8px; }
.v3 .ai-rv-body { color: var(--ink); overflow-wrap: break-word; }
.v3 .ai-rv-body ul { list-style: none; margin: 0; padding: 0; }
.v3 .ai-rv-body li { position: relative; padding-left: 14px; margin-bottom: 6px; }
.v3 .ai-rv-body li::before { content: '-'; position: absolute; left: 0; color: var(--ink-faint); }
.v3 .ai-rv-body b { color: var(--brass); font-weight: 600; }
.v3 .ai-rv-body p { margin: 4px 0 0; }
.v3 .ai-rv-foot { font-size: 12px; color: var(--ink-faint); margin-top: 8px; display: flex; gap: 8px; flex-wrap: wrap; }

/* 价格 */
.v3 .price-card {
  max-width: 680px; margin: 0 auto; padding: 20px 16px; border-radius: var(--r-card);
  background:
    radial-gradient(120% 100% at 100% 0%, rgba(212, 169, 79, .1) 0%, rgba(212, 169, 79, 0) 50%),
    var(--panel);
  border: 1px solid rgba(212, 169, 79, .3);
  display: grid; grid-template-columns: minmax(0, 1fr); gap: 12px;
}
.v3 .price-row { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.v3 .price-big { font-size: 40px; font-weight: 800; line-height: 1; color: var(--brass-hi); letter-spacing: -.01em; font-variant-numeric: tabular-nums; }
.v3 .price-unit { color: var(--ink); font-size: 16px; font-weight: 600; }
.v3 .price-unit small { display: block; color: var(--ink-faint); font-size: 12px; font-weight: 400; }
.v3 .price-inc { margin: 0; color: var(--ink); font-size: 14px; line-height: 1.6; }
.v3 .price-trial { margin: 0; color: var(--ink-dim); font-size: 14px; line-height: 1.6; }
.v3 .price-trial b { color: var(--ink); font-weight: 600; }
.v3 .price-fine { margin: 0; color: var(--ink-faint); font-size: 12px; line-height: 1.6; }

/* FAQ */
.v3 .faq { max-width: 680px; }
.v3 .faq details { border-radius: 12px; background: var(--panel); border: 1px solid var(--hair); margin-bottom: 8px; }
.v3 .faq summary { padding: 12px 44px 12px 16px; font-size: 14px; font-weight: 600; min-height: 48px; display: flex; align-items: center; }
.v3 .faq summary::after { top: 50%; transform: translateY(-50%); right: 16px; font-family: var(--f-ui); font-size: 20px; line-height: 1; }
.v3 .faq details[open] summary { border-bottom-color: var(--hair); }
.v3 .faq .a { font-size: 14px; padding: 12px 16px 16px; }

/* 页脚 */
.v3 .site-footer { background: var(--bg-deep); border-top: 1px solid var(--hair); padding: 24px 0 32px; }
.v3 .site-footer .wrap { gap: 8px; }
.v3 .footer-links { gap: 0 16px; }
.v3 .footer-links .ft-extra { display: none; }
.v3 .footer-legal { font-size: 12px; line-height: 1.6; }

/* ---------- 断点 ---------- */
@media (max-width: 399.98px) {
  .v3 .b-pro { display: none; }
}
@media (min-width: 390px) {
  .v3 .hero-sub { font-size: 16px; }
}
@media (min-width: 480px) {
  .v3 .res-cta { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .v3 .v3-brand small { display: inline; }
}
@media (min-width: 720px) {
  .v3 .v3-nav .nav-link { display: inline-flex; }
  .v3 .footer-links .ft-extra { display: inline-flex; }
  .v3 .v3-sec { padding: 64px 0; }
  .v3 .sec-head { margin-bottom: 32px; }
  .v3 .sec-head h2 { font-size: 28px; }
  .v3 .sec-head p { font-size: 16px; }
  .v3 .sec-head .eyebrow { display: inline-flex; }
  .v3 .modes { grid-auto-flow: row; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; overflow: visible; margin: 0; padding: 0; }
  .v3 .modes-hint { display: none; }
  .v3 .mode { grid-template-rows: auto 1fr; padding: 20px; }
  .v3 .price-card { padding: 28px; grid-template-columns: minmax(0, 1fr) auto; align-items: center; column-gap: 32px; }
  .v3 .price-card > .price-main { grid-column: 1; }
  .v3 .price-card > .price-buy { grid-column: 2; grid-row: 1 / span 2; min-width: 220px; }
  .v3 .price-card > .price-fine { grid-column: 1 / -1; }
}
/* 横屏手机 / 平板以上：首屏左右分栏 */
@media (min-width: 760px) {
  .v3 .v3-hero { padding: 40px 0 56px; }
  .v3 .hero-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 460px); gap: 40px; }
  .v3 .hero-grid { align-items: start; }
  .v3 .hero-copy { text-align: left; padding-top: 56px; }
  .v3 .hero-copy .eyebrow { display: inline-flex; }
  .v3 .v3-hero h1 { font-size: 40px; margin: 12px 0 12px; }
  .v3 .hero-sub { margin: 0; font-size: 16px; }
  .v3 .hero-legend { display: grid; gap: 8px; list-style: none; padding: 0; margin: 24px 0 0; }
  .v3 .hero-trust { display: block; margin-top: 24px; }
  .v3 .spot { max-width: 460px; }
}
@media (min-width: 1024px) {
  .v3 .v3-hero { padding: 72px 0 88px; }
  .v3 .hero-grid { grid-template-columns: minmax(0, 1fr) 480px; gap: 72px; }
  .v3 .spot { max-width: 480px; }
  .v3 .v3-hero h1 { font-size: 40px; }
  .v3 .spot-felt { padding: 16px 20px 20px; }
  .v3 .spot-board { margin: 20px 0; gap: 8px; }
  .v3 .pk-slot, .v3 .spot-board .pk { width: 46px; height: 64px; }
  .v3 .spot-board .pk .pk-r { font-size: 20px; }
  .v3 .spot-board .pk .pk-s { top: 26px; font-size: 13px; }
  .v3 .spot-board .pk .pk-big { font-size: 24px; }
  .v3 .pk-lg { width: 72px; height: 100px; border-radius: 9px; }
  .v3 .pk-lg .pk-r { font-size: 30px; top: 8px; left: 8px; }
  .v3 .pk-lg .pk-s { top: 40px; left: 9px; font-size: 18px; }
  .v3 .pk-lg .pk-big { font-size: 40px; right: 7px; bottom: 6px; }
  .v3 .spot-hist { padding: 16px 20px 0; }
  .v3 .spot-opts { padding: 16px 20px 20px; }
  .v3 .res { padding: 20px; }
}
/* 横屏手机（矮视口）：压缩首屏留白 */
@media (max-height: 480px) and (min-width: 760px) {
  .v3 .v3-hero { padding: 20px 0 32px; }
  .v3 .hero-copy { padding-top: 16px; }
  .v3 .v3-hero h1 { font-size: 28px; margin: 4px 0 8px; }
  .v3 .hero-legend, .v3 .hero-trust { margin-top: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  .v3 *, .v3 *::before, .v3 *::after { animation: none !important; transition: none !important; }
}