/* ------------------------------------------------------------------
   标尺 — 在线测评
   视觉语汇取自答题卡：机读定时标记、涂卡气泡、密封线、朱笔。
   ------------------------------------------------------------------ */

:root {
  --stock:   #E3E8DD;   /* 答题卡的浅色底纸 */
  --sheet:   #F8F9F4;   /* 卡面 */
  --ink:     #141A16;
  --graphite:#4D564F;   /* 铅笔灰，次级文字 */
  --faint:   #5F6860;
  --rule:    #C7CFC2;
  --rule-2:  #DDE3D8;
  --red:     #BE3A28;   /* 朱笔 */
  --scan:    #2B6C8D;   /* 机读蓝 */
  --shadow:  0 1px 0 rgba(20,26,22,.06), 0 12px 32px -22px rgba(20,26,22,.5);

  --serif: 'Songti SC', 'STSong', 'Noto Serif SC', 'SimSun', Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB',
          'Microsoft YaHei', 'Segoe UI', sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { -webkit-text-size-adjust: 100%; }

body {
  min-height: 100vh;
  background: var(--stock);
  background-image:
    linear-gradient(180deg, rgba(255,255,255,.5), rgba(255,255,255,0) 380px);
  color: var(--ink);
  font: 16px/1.75 var(--sans);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
:focus-visible { outline: 2px solid var(--scan); outline-offset: 3px; border-radius: 2px; }

/* ---------------- 版心 ---------------- */

.page { max-width: 760px; margin: 0 auto; padding: 0 20px 96px; }

/* ---------------- 页眉 ---------------- */

.top {
  position: sticky; top: 0; z-index: 40;
  background: color-mix(in srgb, var(--stock) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--rule);
}
.top-in {
  max-width: 760px; margin: 0 auto; padding: 12px 20px;
  display: flex; align-items: center; gap: 14px;
}
.brand { display: flex; align-items: baseline; gap: 9px; text-decoration: none; padding: 4px 0; min-height: 28px; }
.brand b { font: 600 21px/1 var(--serif); letter-spacing: .06em; }
.brand span {
  font: 500 10.5px/1 var(--mono); letter-spacing: .18em;
  color: var(--faint); text-transform: uppercase;
}
.top nav { margin-left: auto; display: flex; align-items: center; gap: 4px; }
.top nav a, .top nav button {
  padding: 7px 10px; border-radius: 3px; font-size: 14px; color: var(--graphite);
  text-decoration: none; white-space: nowrap;
}
.top nav a:hover, .top nav button:hover { background: rgba(20,26,22,.06); color: var(--ink); }
.top nav a[aria-current] { color: var(--ink); box-shadow: inset 0 -2px 0 var(--red); }

.chip-credits {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 11px 6px 8px; border: 1px solid var(--rule);
  border-radius: 999px; background: var(--sheet);
  font: 500 13px/1 var(--mono); color: var(--ink); text-decoration: none;
}
.chip-credits:hover { border-color: var(--graphite); }
.chip-credits i { width: 9px; height: 9px; border-radius: 50%; background: var(--ink); display: block; }
.chip-credits.flash { animation: flash .9s ease; }
@keyframes flash {
  0%   { background: #FFF3C4; border-color: #D8B93B; }
  100% { background: var(--sheet); border-color: var(--rule); }
}

/* ---------------- 卡面 ---------------- */

.sheet {
  position: relative; background: var(--sheet);
  border: 1px solid var(--rule); border-radius: 3px; box-shadow: var(--shadow);
}
.sheet-pad { padding: 26px 26px 30px; }

.eyebrow {
  font: 500 11.5px/1.6 var(--mono); letter-spacing: .05em;
  color: var(--graphite); text-transform: uppercase;
}
.eyebrow.red { color: var(--red); }

.serial {
  font: 500 11.5px/1.5 var(--mono); letter-spacing: .04em; color: var(--faint);
}

h1.display {
  font: 600 clamp(31px, 6.4vw, 46px)/1.28 var(--serif);
  letter-spacing: .01em; margin: 16px 0 0;
}
h2.display { font: 600 clamp(21px, 3.4vw, 26px)/1.4 var(--serif); }
.lede { color: var(--graphite); margin-top: 14px; max-width: 46em; }

/* ---------------- 首页 ---------------- */

.hero { padding: 52px 0 8px; }
.hero .lede { font-size: 17px; }

.rise { animation: rise .55s cubic-bezier(.2,.7,.3,1) both; }
.rise:nth-child(2) { animation-delay: .06s; }
.rise:nth-child(3) { animation-delay: .12s; }
.rise:nth-child(4) { animation-delay: .18s; }
@keyframes rise { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

.taster { margin-top: 34px; }
.taster-head {
  display: flex; align-items: baseline; gap: 12px;
  padding: 13px 26px; border-bottom: 1px dashed var(--rule);
}
.taster-head .q-no { font: 600 13px/1.4 var(--mono); color: var(--red); letter-spacing: .02em; }
.taster-head .q-from { font-size: 13.5px; color: var(--faint); margin-left: auto; }
.taster-head .marks { display: flex; gap: 3px; align-self: center; }
.taster-head .marks i { display: block; width: 6px; height: 12px; border-radius: 1px; background: var(--rule); }
.taster-head .marks i:first-child { background: var(--ink); }
@media (max-width: 640px) { .taster-head .marks { display: none; } }

.section-rule {
  display: flex; align-items: center; gap: 14px; margin: 54px 0 20px;
}
.section-rule::after { content: ''; flex: 1; height: 1px; background: var(--rule); }

.tests { display: grid; gap: 14px; }
.test-card {
  display: block; text-align: left; width: 100%;
  background: var(--sheet); border: 1px solid var(--rule); border-radius: 3px;
  padding: 20px 22px; transition: transform .18s, border-color .18s, box-shadow .18s;
}
.test-card:hover { border-color: var(--graphite); transform: translateY(-2px); box-shadow: var(--shadow); }
.test-card h3 { font: 600 22px/1.35 var(--serif); }
.test-card p { color: var(--graphite); font-size: 15px; margin-top: 4px; }
.meta {
  display: flex; flex-wrap: wrap; gap: 6px 16px; margin-top: 14px;
  font: 500 12.5px/1.5 var(--mono); color: var(--faint); letter-spacing: .01em;
}
.meta b { color: var(--ink); font-weight: 500; }
.meta .cost { color: var(--red); }
.test-card .aside { display: block; margin-top: 9px; font-size: 12.5px; color: var(--faint); }
.test-card .go {
  margin-top: 16px; display: inline-flex; align-items: center; gap: 8px;
  font-size: 14px; color: var(--ink); border-bottom: 1px solid var(--red); padding-bottom: 2px;
}

/* ---------------- 定时标记（进度） ---------------- */

.rail {
  display: flex; flex-wrap: wrap; gap: 4px;
  padding: 14px 26px; border-bottom: 1px solid var(--rule-2);
}
.rail i {
  display: block; width: 9px; height: 16px; border-radius: 1px;
  background: transparent; border: 1px solid var(--rule); transition: all .2s;
}
.rail i.done { background: var(--ink); border-color: var(--ink); }
.rail i.here { border-color: var(--red); background: transparent; box-shadow: inset 0 0 0 2px var(--sheet), 0 0 0 1px var(--red); }
.rail i.locked { border-style: dashed; opacity: .5; }

.rail-note {
  padding: 10px 26px 0; font: 500 11.5px/1.5 var(--mono);
  letter-spacing: .04em; color: var(--faint);
}

/* ---------------- 题目 ---------------- */

.q-text {
  font: 600 clamp(19px, 3.2vw, 23px)/1.6 var(--serif);
  padding: 24px 26px 4px; letter-spacing: .01em;
}
.q-text.formula { font-family: var(--mono); font-weight: 500; letter-spacing: .06em; }

.opts { padding: 14px 18px 22px; display: grid; gap: 2px; }
.opt {
  display: flex; align-items: center; gap: 14px; width: 100%; text-align: left;
  padding: 11px 10px; border-radius: 3px; transition: background .15s;
}
.opt:hover { background: rgba(20,26,22,.045); }
.opt:hover .bub { border-color: var(--ink); }
.bub {
  flex: none; width: 30px; height: 30px; border-radius: 50%;
  border: 1.5px solid var(--graphite); position: relative;
  display: grid; place-items: center;
  font: 500 12px/1 var(--mono); color: var(--graphite);
  transition: border-color .15s;
}
.bub::after {
  content: ''; position: absolute; inset: 3px; border-radius: 50%;
  background: radial-gradient(circle at 38% 32%, #4C544D, #1B211C 72%);
  transform: scale(0); opacity: 0; transition: transform .2s cubic-bezier(.3,1.4,.5,1), opacity .2s;
}
.opt[aria-pressed="true"] .bub { border-color: var(--ink); }
.opt[aria-pressed="true"] .bub::after { transform: scale(1); opacity: 1; }
.opt[aria-pressed="true"] .bub { color: transparent; }
.opt .txt { font-size: 16px; line-height: 1.6; }
.opt[aria-pressed="true"] .txt { color: var(--ink); }

/* 量表题（1–5） */
.likert { padding: 18px 26px 24px; }
.likert-row { display: flex; gap: 8px; }
.likert-row button {
  flex: 1; display: grid; place-items: center; gap: 9px;
  padding: 14px 4px 12px; border: 1px solid var(--rule); border-radius: 3px;
  background: var(--sheet); transition: border-color .15s, background .15s;
}
.likert-row button:hover { border-color: var(--graphite); }
.likert-row button .bub { width: 24px; height: 24px; }
.likert-row button span { font-size: 12px; color: var(--graphite); text-align: center; line-height: 1.35; min-height: 2.7em; }
.likert-row button[aria-pressed="true"] { border-color: var(--ink); background: #EEF0E8; }
.likert-row button[aria-pressed="true"] span { color: var(--ink); }

.q-foot {
  display: flex; align-items: center; gap: 12px;
  padding: 0 26px 22px; font-size: 14px; color: var(--faint);
}
.q-foot .spacer { flex: 1; }
.linkish { color: var(--graphite); text-decoration: none; border-bottom: 1px solid var(--rule); padding: 4px 0 3px; display: inline-block; }
.linkish:hover { color: var(--ink); border-color: var(--graphite); }

/* ---------------- 按钮 ---------------- */

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: 13px 22px; border-radius: 3px; font-size: 15px; font-weight: 500;
  background: var(--ink); color: var(--sheet); text-decoration: none;
  transition: background .15s, transform .1s;
}
.btn:hover { background: #000; }
.btn:active { transform: translateY(1px); }
.btn.red { background: var(--red); }
.btn.red:hover { background: #A62F1F; }
.btn.ghost { background: transparent; color: var(--ink); border: 1px solid var(--rule); }
.btn.ghost:hover { background: rgba(20,26,22,.05); border-color: var(--graphite); }
.btn[disabled] { opacity: .45; pointer-events: none; }
.btn .k { font: 500 12px/1 var(--mono); opacity: .7; }

/* ---------------- 密封线 / 解锁 ---------------- */

.sealed { margin-top: 22px; position: relative; overflow: hidden; }
.seal-strip {
  display: flex; align-items: center; gap: 14px;
  padding: 11px 26px; background: #EDEFE6;
  border-bottom: 1px dashed var(--red);
  font: 500 11px/1 var(--mono); letter-spacing: .22em; color: var(--red);
}
.seal-strip .dots { flex: 1; height: 1px; background: repeating-linear-gradient(90deg, var(--red) 0 4px, transparent 4px 9px); opacity: .55; }

.teaser { padding: 26px 26px 4px; }
.teaser .line { font: 600 clamp(20px, 3.6vw, 25px)/1.5 var(--serif); }
.teaser .hook { color: var(--graphite); margin-top: 10px; }

.unlock { padding: 22px 26px 28px; }
.unlock-price {
  display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap;
  padding: 16px 0 18px; border-top: 1px solid var(--rule-2); margin-top: 20px;
}
.unlock-price .big { font: 600 30px/1 var(--mono); }
.unlock-price .u { font-size: 14px; color: var(--graphite); }
.unlock-price .bal { margin-left: auto; font: 500 13px/1 var(--mono); color: var(--faint); }
.unlock-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.unlock-list { margin-top: 16px; display: grid; gap: 7px; font-size: 14px; color: var(--graphite); }
.unlock-list li { list-style: none; display: flex; gap: 10px; }
.unlock-list li::before { content: '●'; color: var(--red); font-size: 9px; line-height: 1.9; }

.tear { animation: tear .5s ease forwards; }
@keyframes tear { to { opacity: 0; transform: translateY(-8px) scaleY(.7); } }

/* ---------------- 报告 ---------------- */

.report-head { padding: 30px 26px 24px; border-bottom: 1px solid var(--rule); }
.report-head .row { display: flex; align-items: center; gap: 12px; }
.report-head h1 { font: 600 clamp(26px, 5vw, 34px)/1.3 var(--serif); margin-top: 14px; }

.score-box {
  display: flex; align-items: flex-end; gap: 18px; flex-wrap: wrap;
  margin-top: 22px; padding-top: 20px; border-top: 1px solid var(--rule-2);
}
.score-box .num { font: 600 clamp(52px, 12vw, 76px)/.9 var(--mono); letter-spacing: -.02em; }
.score-box .side { padding-bottom: 6px; }
.score-box .lab { font: 500 11.5px/1.6 var(--mono); letter-spacing: .05em; color: var(--faint); text-transform: uppercase; }
.score-box .cap { font-size: 14px; color: var(--graphite); }
.band-tag {
  display: inline-block; padding: 4px 11px; border: 1px solid var(--red);
  color: var(--red); border-radius: 999px; font: 500 12.5px/1.5 var(--mono); letter-spacing: .02em;
}

.report-sec { padding: 26px; border-bottom: 1px solid var(--rule-2); }
.report-sec:last-child { border-bottom: none; }
.report-sec h3 {
  font: 500 12px/1.5 var(--mono); letter-spacing: .05em; text-transform: uppercase;
  color: var(--faint); margin-bottom: 18px;
}
.report-sec p + p { margin-top: 12px; }
.report-sec .body { color: var(--graphite); }

.dim { padding: 16px 0; border-top: 1px dashed var(--rule-2); }
.dim:first-of-type { border-top: none; padding-top: 0; }
.dim-top { display: flex; align-items: baseline; gap: 10px; }
.dim-top .name { font: 600 17px/1.4 var(--serif); }
.dim-top .tag { font: 500 12px/1.5 var(--mono); color: var(--faint); letter-spacing: .02em; }
.dim-top .val { margin-left: auto; font: 500 15px/1 var(--mono); }
.bar { height: 7px; background: #E6E9DF; border-radius: 1px; margin: 10px 0 9px; overflow: hidden; }
.bar i { display: block; height: 100%; background: var(--ink); border-radius: 1px; transition: width .8s cubic-bezier(.2,.7,.3,1); }
.dim.top-dim .bar i { background: var(--red); }
.dim .say { font-size: 14.5px; color: var(--graphite); }

.notes { display: grid; gap: 12px; }
.notes li { list-style: none; display: flex; gap: 12px; font-size: 15px; }
.notes li .n { font: 500 12px/1.7 var(--mono); color: var(--red); flex: none; }

.disclaimer {
  padding: 18px 26px 22px; font-size: 12.5px; color: var(--faint);
  background: #EEF0E8; border-top: 1px solid var(--rule-2);
}

/* ---------------- 钱包 / 流水 ---------------- */

.balance { padding: 30px 26px; display: flex; align-items: flex-end; gap: 16px; flex-wrap: wrap; }
.balance .num { font: 600 clamp(46px, 11vw, 64px)/.9 var(--mono); }
.balance .lab { font: 500 11.5px/1.6 var(--mono); letter-spacing: .05em; color: var(--faint); text-transform: uppercase; }

.packs { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }
.pack {
  text-align: left; padding: 20px; border: 1px solid var(--rule); border-radius: 3px;
  background: var(--sheet); transition: border-color .18s, transform .18s;
  position: relative;
}
.pack:hover { border-color: var(--ink); transform: translateY(-2px); }
.pack .credits { font: 600 34px/1 var(--mono); }
.pack .credits em { font: 500 13px/1 var(--mono); font-style: normal; color: var(--graphite); margin-left: 6px; }
.pack .price { margin-top: 12px; font-size: 15px; }
.pack .price b { font: 500 17px/1 var(--mono); }
.pack .per { margin-top: 6px; font: 500 11.5px/1.5 var(--mono); color: var(--faint); }
.pack .flag {
  position: absolute; top: -1px; right: -1px; padding: 4px 9px;
  background: var(--red); color: #fff; font: 500 11px/1.4 var(--mono); border-radius: 0 3px 0 3px;
}

.ledger { font-family: var(--mono); font-size: 13px; }
.ledger .row {
  display: flex; align-items: baseline; gap: 10px; padding: 11px 0;
  border-bottom: 1px dashed var(--rule-2);
}
.ledger .row:last-child { border-bottom: none; }
.ledger .when { color: var(--faint); font-size: 12px; flex: none; width: 96px; }
.ledger .what { font-family: var(--sans); font-size: 14px; flex: 1; }
.ledger .delta { font-weight: 500; flex: none; }
.ledger .delta.plus { color: var(--scan); }
.ledger .delta.minus { color: var(--red); }
.ledger .after { color: var(--faint); font-size: 12px; flex: none; width: 64px; text-align: right; }

/* ---------------- 记录 ---------------- */

.rec { display: flex; align-items: center; gap: 14px; padding: 17px 0; border-bottom: 1px dashed var(--rule-2); }
.rec:last-child { border-bottom: none; }
.rec .main { flex: 1; min-width: 0; }
.rec .t { font: 600 17px/1.4 var(--serif); }
.rec .s { font: 500 12px/1.8 var(--mono); color: var(--faint); letter-spacing: .01em; }
.rec .h { font-size: 14px; color: var(--graphite); margin-top: 3px; }
.rec .act { flex: none; }

.state {
  display: inline-block; padding: 2px 8px; border-radius: 2px;
  font: 500 12px/1.6 var(--mono); letter-spacing: .01em;
}
.state.done { background: #E2E9DB; color: #3D5A38; }
.state.open { background: #FBF0D9; color: #85622A; }
.state.trial { background: #E7EAF0; color: #3C5570; }

/* ---------------- 提示 / 空 ---------------- */

.empty { padding: 40px 26px; text-align: center; color: var(--graphite); }
.empty h3 { font: 600 20px/1.5 var(--serif); color: var(--ink); margin-bottom: 8px; }

.notice {
  display: flex; gap: 12px; padding: 14px 16px; border-radius: 3px;
  background: #F6EFE0; border: 1px solid #E0CFA8; font-size: 14px; color: #6B5326;
  line-height: 1.65;
}
.notice.stop { background: #F7E8E4; border-color: #E2BCB3; color: #7A3226; }
.notice b { display: block; margin-bottom: 3px; color: inherit; }

.toast {
  position: fixed; left: 50%; bottom: 26px; transform: translate(-50%, 12px);
  background: var(--ink); color: var(--sheet); padding: 12px 18px; border-radius: 3px;
  font-size: 14px; box-shadow: 0 12px 30px -14px rgba(0,0,0,.7);
  opacity: 0; pointer-events: none; transition: opacity .2s, transform .2s; z-index: 90;
  max-width: calc(100vw - 40px);
}
.toast.on { opacity: 1; transform: translate(-50%, 0); }

.loading { padding: 60px 26px; text-align: center; color: var(--faint); font: 500 12px/1 var(--mono); letter-spacing: .2em; }

.foot {
  margin-top: 44px; padding-top: 12px; border-top: 1px solid var(--rule);
  display: flex; gap: 10px; flex-wrap: wrap; align-items: center;
  font: 500 12px/1.8 var(--mono); color: var(--faint); letter-spacing: .02em;
}
.foot a { text-decoration: none; padding: 6px 6px; margin: 0 -6px; }
.foot .note { margin-left: auto; padding: 6px 0; }
.foot a:hover { color: var(--ink); }

/* ---------------- 窄屏 ---------------- */

@media (max-width: 640px) {
  .page { padding: 0 14px 72px; }
  .top-in { padding: 10px 14px; gap: 8px; }
  .top nav a, .top nav button { padding: 6px 7px; font-size: 13.5px; }
  .brand span { display: none; }
  .sheet-pad, .q-text, .opts, .rail, .taster-head, .report-sec, .report-head,
  .unlock, .teaser, .seal-strip, .disclaimer, .balance, .rail-note { padding-left: 16px; padding-right: 16px; }
  .opts { padding-left: 8px; padding-right: 8px; }
  .hero { padding-top: 34px; }
  .likert-row { gap: 5px; }
  .likert-row button { padding: 11px 2px 9px; }
  .likert-row button span { font-size: 10.5px; }
  .ledger .when { width: 74px; }
  .ledger .after { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}