/* =========================================================================
   CRAM-5 · 复古终端 × 女神异闻录5
   设计分层：P5 的骨头（斜切/粗描边/红黑冲击）+ 终端的心脏（等宽字/光标/扫描线）
   禁止：圆角、渐变、柔和阴影、emoji 图标
   ========================================================================= */

:root {
  --ink: #0B0B0C;
  --steel: #16161A;
  --line: #3A3A42;
  --green: #7CFF6B;
  --red: #E4002B;
  --yellow: #FFD400;
  --bone: #F2F0E9;
  --dim: #8A8A93;

  --mono: "JetBrains Mono", "Cascadia Code", "Sarasa Mono SC", "Consolas",
          "Microsoft YaHei", monospace;
  --heavy: "Impact", "Anton", "Haettenschweiler", "Arial Black",
           "Source Han Sans Heavy", "Microsoft YaHei", sans-serif;
  --fs: 16px;

  --skew: -8deg;
  --cut: polygon(0 0, 100% 0, 97% 100%, 0 100%);
}

* { box-sizing: border-box; border-radius: 0 !important; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--ink);
  color: #DCD8CC;
  font-family: var(--mono);
  font-size: var(--fs);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

body { min-height: 100vh; padding-bottom: 80px; }

/* ---------- CRT 层 ---------- */
.crt::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9998;
  background: repeating-linear-gradient(
    to bottom,
    rgba(0,0,0,0) 0px, rgba(0,0,0,0) 2px,
    rgba(0,0,0,.28) 3px, rgba(0,0,0,.28) 4px);
  opacity: .5;
  mix-blend-mode: multiply;
}
.crt::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9997;
  background:
    radial-gradient(ellipse at center, rgba(0,0,0,0) 55%, rgba(0,0,0,.65) 100%),
    repeating-conic-gradient(rgba(255,255,255,.03) 0% 25%, transparent 0% 50%) 0 0/3px 3px;
}
body.no-motion .crt::before,
body.no-motion .crt::after { display: none; }

::selection { background: var(--red); color: var(--bone); }
:focus { outline: none; }
button:focus-visible, a:focus-visible, [tabindex]:focus-visible { outline: 2px solid var(--green); outline-offset: 2px; }

/* ---------- 滚动条 ---------- */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--ink); }
::-webkit-scrollbar-thumb { background: var(--line); border: 2px solid var(--ink); }
::-webkit-scrollbar-thumb:hover { background: var(--red); }

/* =========================================================================
   框架
   ========================================================================= */
.top {
  position: sticky; top: 0; z-index: 900;
  display: flex; align-items: center; gap: 14px;
  padding: 10px 18px;
  background: var(--ink);
  border-bottom: 3px solid var(--red);
}
.brand {
  font-family: var(--heavy);
  font-size: 26px;
  letter-spacing: -.02em;
  color: var(--bone);
  text-shadow: 2px 2px 0 var(--red);
  transform: skewX(var(--skew));
  white-space: nowrap;
}
.brand span { color: var(--red); text-shadow: none; }
.progressbar {
  flex: 1;
  height: 12px;
  background: var(--steel);
  border: 2px solid var(--line);
  position: relative;
  min-width: 60px;
}
.progressbar > i {
  display: block; height: 100%;
  background: var(--green);
  box-shadow: 0 0 8px rgba(124,255,107,.5);
  transition: width .4s ease;
}
.top-meta {
  display: flex; align-items: center; gap: 10px;
  font-size: 12px; color: var(--dim); white-space: nowrap;
}
.seat-chip {
  border: 2px solid var(--green);
  color: var(--green);
  padding: 1px 8px;
  font-weight: 700;
  letter-spacing: .08em;
}
.iconbtn {
  background: none; border: 2px solid var(--line); color: var(--dim);
  padding: 2px 8px; font-family: var(--mono); font-size: 12px; cursor: pointer;
}
.iconbtn:hover { border-color: var(--red); color: var(--bone); }

.wrap { max-width: 1180px; margin: 0 auto; padding: 22px 18px 40px; }

/* 章节页三栏 */
.layout {
  display: grid;
  grid-template-columns: 232px minmax(0, 1fr) 244px;
  gap: 26px;
  align-items: start;
}
@media (max-width: 1080px) {
  .layout { grid-template-columns: minmax(0,1fr); }
  .side-toc, .side-kp { display: none; }
}

/* =========================================================================
   通用组件
   ========================================================================= */
h1, h2, h3, h4 {
  font-family: var(--heavy);
  color: var(--bone);
  letter-spacing: -.01em;
  line-height: 1.15;
  margin: 1.4em 0 .6em;
}
h1 {
  font-size: clamp(26px, 3.4vw, 40px);
  margin-bottom: .5em;
  text-transform: uppercase;
  transform: skewX(var(--skew));
  transform-origin: left center;
  text-shadow: 4px 4px 0 var(--red);
  margin-top: .3em;
  padding-left: .14em;
  overflow: visible;
}
h2 {
  font-size: clamp(20px, 2.6vw, 30px);
  border-left: 8px solid var(--red);
  padding-left: 12px;
  margin-top: 2em;
}
h3 {
  font-size: 19px;
  color: var(--yellow);
  margin-top: 1.9em;
  border-left: 6px solid var(--yellow);
  padding-left: 12px;
  background: linear-gradient(90deg, rgba(255,212,0,.10), transparent 55%);
}
h4 { font-size: 16px; color: var(--green); }
h4::before { content: "▚ "; color: var(--red); }
h2 + h3, h2 { scroll-margin-top: 70px; }
section > h2:first-child, section > h3:first-child { margin-top: 1.2em; }

p { margin: .7em 0; }
a { color: var(--yellow); text-decoration: none; border-bottom: 1px dashed var(--yellow); }
strong, b { color: #FFFFFF; }
em { color: var(--yellow); font-style: normal; border-bottom: 1px solid rgba(255,212,0,.4); }
a:hover { color: var(--ink); background: var(--yellow); }

hr {
  border: none; height: 3px; margin: 2em 0;
  background: repeating-linear-gradient(90deg, var(--red) 0 14px, transparent 14px 22px);
}

blockquote {
  margin: 1em 0; padding: 10px 14px;
  border-left: 5px solid var(--red);
  background: rgba(228,0,43,.08);
  color: var(--bone);
}
blockquote p { margin: .25em 0; }

ul, ol { padding-left: 1.4em; }
li { margin: .25em 0; }

code {
  font-family: var(--mono);
  background: rgba(124,255,107,.12);
  color: var(--green);
  padding: 1px 5px;
}
pre.code {
  position: relative;
  background: #000;
  border: 1px solid var(--line);
  border-left: 5px solid var(--green);
  padding: 14px 14px 14px 16px;
  overflow-x: auto;
  margin: 1em 0;
  font-size: 13.5px;
  line-height: 1.6;
}
pre.code::before {
  content: attr(data-lang);
  position: absolute; top: 0; right: 0;
  background: var(--green); color: var(--ink);
  font-size: 10px; padding: 0 6px; letter-spacing: .1em;
}
pre.code code { background: none; padding: 0; color: #d8ffd0; }

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1em 0;
  font-size: 14px;
}
th {
  background: var(--red); color: var(--bone);
  text-align: left; padding: 7px 10px;
  font-family: var(--mono); font-weight: 700;
  border: 1px solid var(--red);
}
td {
  border: 1px solid var(--line);
  padding: 6px 10px;
  vertical-align: top;
}
tr:nth-child(even) td { background: rgba(255,255,255,.02); }

details {
  border: 1px dashed var(--line);
  padding: 8px 12px;
  margin: 1em 0;
  background: rgba(124,255,107,.04);
}
details summary {
  cursor: pointer; color: var(--yellow); font-weight: 700;
  outline: none;
}
details[open] summary { border-bottom: 1px dashed var(--line); padding-bottom: 6px; margin-bottom: 6px; }

.cb { display: inline-block; width: 13px; height: 13px; border: 2px solid var(--dim); margin-right: 8px; vertical-align: -2px; }
.cb.on { background: var(--green); border-color: var(--green); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-block;
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .06em;
  padding: 9px 20px;
  background: transparent;
  color: var(--bone);
  border: 3px solid var(--red);
  cursor: pointer;
  transform: skewX(var(--skew));
  transition: background .12s, color .12s, transform .12s;
  text-transform: uppercase;
}
.btn:hover { background: var(--red); color: #fff; transform: skewX(var(--skew)) translateY(-2px); }
.btn:active { transform: skewX(var(--skew)) translateY(0); }
.btn.primary { background: var(--red); color: #fff; }
.btn.primary:hover { background: var(--bone); color: var(--ink); border-color: var(--bone); }
.btn.ghost { border-color: var(--line); color: var(--dim); }
.btn.ghost:hover { border-color: var(--green); color: var(--green); background: transparent; }
.btn:disabled { opacity: .35; cursor: not-allowed; transform: none; }
.btn.sm { padding: 5px 12px; font-size: 12px; border-width: 2px; }

/* ---------- 卡片 ---------- */
.card {
  background: var(--steel);
  border-left: 6px solid var(--red);
  padding: 16px 18px;
  margin: 16px 0;
  clip-path: var(--cut);
}
.card.plain { border-left-color: var(--line); clip-path: none; }
.card.done { border-left-color: var(--green); }

/* ---------- 首页 ---------- */
.hero { padding: 18px 0 4px; }
.kicker {
  font-size: 12px; letter-spacing: .35em; color: var(--red);
  text-transform: uppercase; font-weight: 700;
}
.hero .today {
  margin: 6px 0 4px;
  font-family: var(--heavy);
  font-size: clamp(42px, 8.4vw, 96px);
  line-height: .95;
  color: var(--bone);
  text-shadow: 6px 6px 0 var(--red);
  transform: skewX(var(--skew));
  letter-spacing: -.03em;
}
.hero .today small { display: block; font-size: .26em; color: var(--green); text-shadow: none; margin-top: 18px; letter-spacing: .08em; line-height: 1.5; }

.task {
  display: flex; gap: 22px; align-items: center; justify-content: space-between;
  background: var(--steel);
  border: 3px solid var(--red);
  padding: 20px 22px;
  margin: 22px 0;
  clip-path: polygon(0 0, 100% 0, 98.5% 100%, 0 100%);
  flex-wrap: wrap;
}
.task .ch {
  font-family: var(--heavy); font-size: 54px; color: var(--red);
  line-height: .85; letter-spacing: -.02em;
}
.task .tt { font-size: 20px; color: var(--bone); font-weight: 700; margin: 2px 0; }
.task .sub { font-size: 12px; color: var(--dim); letter-spacing: .1em; }

.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin: 18px 0; }
@media (max-width: 720px) {
  .stats { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .stat { padding: 10px 10px; }
  .stat b { font-size: 22px; }
  .stat span { font-size: 8.5px; letter-spacing: .08em; }
  .task { padding: 16px; }
  .task .ch { font-size: 36px; }
  .task .tt { font-size: 16px; }
  .hero .today small { margin-top: 10px; }
}
.stat { background: var(--steel); border-top: 4px solid var(--line); padding: 12px 14px; }
.stat b { display: block; font-family: var(--heavy); font-size: 30px; color: var(--bone); letter-spacing: -.02em; }
.stat span { font-size: 11px; letter-spacing: .22em; color: var(--dim); text-transform: uppercase; }
.stat .bar { height: 6px; background: var(--line); margin-top: 8px; }
.stat .bar i { display: block; height: 100%; background: var(--green); }

.acts { display: flex; gap: 12px; flex-wrap: wrap; margin: 22px 0; }

.spark { display: flex; align-items: flex-end; gap: 6px; height: 54px; margin-top: 8px; }
.spark i { flex: 1; background: var(--green); opacity: .75; min-height: 2px; }
.spark i:hover { opacity: 1; background: var(--red); }

/* ---------- 目录 ---------- */
.side-toc { position: sticky; top: 68px; font-size: 13px; }
.side-toc .hd {
  font-size: 11px; letter-spacing: .3em; color: var(--red);
  text-transform: uppercase; margin-bottom: 8px;
}
.side-toc a {
  display: block; padding: 4px 0 4px 10px;
  border-left: 3px solid transparent;
  color: var(--dim); border-bottom: none;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.side-toc a:hover { color: var(--bone); background: rgba(228,0,43,.12); }
.side-toc a.on { color: var(--green); border-left-color: var(--red); }
.side-kp { position: sticky; top: 68px; font-size: 12px; }
.kp-dot { display: inline-block; width: 9px; height: 9px; margin-right: 7px; vertical-align: 0; }
.kp-dot.gray { background: #44444c; }
.kp-dot.red { background: var(--red); }
.kp-dot.yel { background: var(--yellow); }
.kp-dot.grn { background: var(--green); }
.kp-dot.cyn { background: #35E0E0; }
.side-kp li { list-style: none; margin: 5px 0; color: var(--dim); }
.side-kp ul { padding: 0; margin: 0; }

/* ---------- 题卡 ---------- */
.q { background: var(--steel); border-left: 6px solid var(--red); padding: 18px 20px; margin: 18px 0; }
.q .qno { font-size: 11px; letter-spacing: .3em; color: var(--red); text-transform: uppercase; }
.q .stem { font-size: 16.5px; color: var(--bone); margin: 8px 0 10px; white-space: pre-wrap; }
.q .stem code { font-size: 14px; }

.opts { display: grid; gap: 8px; margin: 12px 0; }
.opt {
  display: flex; gap: 10px; align-items: flex-start;
  padding: 9px 12px;
  border: 2px solid var(--line);
  background: var(--ink);
  cursor: pointer;
  color: var(--bone);
  font-family: var(--mono);
  font-size: 14.5px;
  text-align: left;
  transition: border-color .1s, background .1s;
}
.opt:hover { border-color: var(--green); }
.opt .idx {
  flex: 0 0 20px; color: var(--dim); font-weight: 700;
}
.opt.sel { border-color: var(--yellow); background: rgba(255,212,0,.08); }
.opt.sel .idx { color: var(--yellow); }
.opt.ok { border-color: var(--green); background: rgba(124,255,107,.1); }
.opt.bad { border-color: var(--red); background: rgba(228,0,43,.14); }
.opt.miss { border-color: var(--yellow); border-style: dashed; }

.verdict { margin-top: 14px; border-top: 2px solid var(--line); padding-top: 12px; }
.tag-pass, .tag-fail {
  font-family: var(--heavy); font-size: 22px; letter-spacing: .04em;
  transform: skewX(var(--skew)); display: inline-block; padding: 0 8px;
}
.tag-pass { background: var(--green); color: var(--ink); }
.tag-fail { background: var(--red); color: #fff; }
.explain { font-size: 14px; color: var(--bone); margin-top: 10px; white-space: pre-wrap; }
.explain code { font-size: 13px; }
.trap { font-size: 13px; color: var(--yellow); margin-top: 8px; border-left: 3px solid var(--yellow); padding-left: 10px; }

.causes { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }
.cause {
  border: 2px solid var(--line); background: none; color: var(--dim);
  padding: 4px 12px; font-family: var(--mono); font-size: 13px; cursor: pointer;
}
.cause:hover { border-color: var(--yellow); color: var(--yellow); }
.cause.on { border-color: var(--red); background: var(--red); color: #fff; }

/* ---------- 掌握度网格 ---------- */
.grid-kp { display: flex; flex-wrap: wrap; gap: 6px; margin: 0; }
.kprow { display: grid; grid-template-columns: 96px minmax(0,1fr) 120px; gap: 16px; align-items: center;
         border-top: 1px solid var(--line); padding: 12px 0; }
.kprow:first-of-type { border-top: 3px solid var(--red); }
.kprow-h { font-family: var(--heavy); font-size: 26px; color: var(--bone); line-height: 1;
           transform: skewX(var(--skew)); }
.kprow-h em { display: block; font-family: var(--mono); font-style: normal; font-size: 10px;
              color: var(--dim); letter-spacing: .12em; margin-top: 5px; transform: skewX(0); }
.kprow-s { font-size: 11px; color: var(--dim); line-height: 1.6; text-align: right; }
.kprow-s b { display: block; font-family: var(--heavy); font-size: 20px; color: var(--green); }
@media (max-width: 720px) {
  .kprow { grid-template-columns: 56px minmax(0,1fr); }
  .kprow-s { display: none; }
  .cell, .grid-kp .cell { width: 34px; height: 34px; font-size: 9px; }
}
.cell {
  width: 46px; height: 46px; display: flex; align-items: center; justify-content: center;
  font-size: 10px; font-weight: 700; cursor: pointer;
  border: 1px solid var(--ink);
}
.cell:hover { outline: 2px solid var(--bone); }
.cell.gray { background: #2a2a30; color: #6a6a72; }
.cell.red { background: var(--red); color: #fff; }
.cell.yel { background: var(--yellow); color: var(--ink); }
.cell.grn { background: var(--green); color: var(--ink); }
.cell.cyn { background: #35E0E0; color: var(--ink); }
.legend { display: flex; gap: 14px; font-size: 11px; color: var(--dim); flex-wrap: wrap; margin: 8px 0; }
.legend span { display: flex; align-items: center; gap: 5px; }
.legend i { width: 12px; height: 12px; display: inline-block; }

/* ---------- 答题卡 ---------- */
.sheet { display: grid; grid-template-columns: repeat(6, 1fr); gap: 6px; }
.sheet b {
  display: flex; align-items: center; justify-content: center;
  height: 30px; font-size: 12px; font-weight: 700;
  border: 2px solid var(--line); color: var(--dim); cursor: pointer;
}
.sheet b.ans { border-color: var(--green); color: var(--green); }
.sheet b.cur { background: var(--red); border-color: var(--red); color: #fff; }

/* ---------- 计时 ---------- */
.timer {
  font-family: var(--heavy); font-size: 40px; letter-spacing: .02em;
  color: var(--bone); font-variant-numeric: tabular-nums;
}
.timer.warn { color: var(--yellow); animation: shake .8s infinite; }
@keyframes shake {
  0%,100% { transform: translateX(0); }
  25% { transform: translateX(-2px); }
  75% { transform: translateX(2px); }
}

/* ---------- 提示条 ---------- */
.toast {
  position: fixed; left: 0; right: 0; top: 0; z-index: 1000;
  padding: 8px 16px; font-size: 13px; font-weight: 700;
  display: flex; justify-content: space-between; align-items: center;
  transform: translateY(-100%);
  transition: transform .25s ease;
}
.toast.show { transform: translateY(0); }
.toast.offline { background: var(--yellow); color: var(--ink); }
.toast.err { background: var(--red); color: #fff; }
.toast.ok { background: var(--green); color: var(--ink); }

/* ---------- 弹窗 ---------- */
.modal-bg {
  position: fixed; inset: 0; z-index: 1200;
  background: rgba(0,0,0,.82);
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
}
.modal {
  background: var(--steel);
  border: 4px solid var(--red);
  padding: 24px 26px;
  max-width: 560px; width: 100%;
  clip-path: polygon(0 0, 100% 0, 97% 100%, 0 100%);
  max-height: 88vh; overflow: auto;
}
.modal h2 { margin-top: 0; }

/* ---------- 表格式看板 ---------- */
.board-tbl { font-size: 13px; }
.board-tbl td, .board-tbl th { padding: 6px 8px; }
.board-tbl .ok { color: var(--green); }
.board-tbl .warn { color: var(--yellow); }
.board-tbl .bad { color: var(--red); }

.feed { font-size: 12px; max-height: 260px; overflow: auto; border: 1px solid var(--line); padding: 8px; background: #000; }
.feed div { padding: 2px 0; color: var(--dim); }
.feed b { color: var(--green); }
.feed .t { color: var(--red); }

/* ---------- 成就定格 ---------- */
.achv {
  position: fixed; inset: 0; z-index: 1500;
  display: flex; align-items: center; justify-content: center;
  background: var(--red);
  clip-path: polygon(0 0, 100% 0, 92% 100%, 0 100%);
  animation: achvIn .35s ease-out;
}
.achv .in {
  text-align: center; transform: skewX(var(--skew));
}
.achv .t1 { font-size: 12px; letter-spacing: .5em; color: rgba(255,255,255,.75); }
.achv .t2 { font-family: var(--heavy); font-size: clamp(40px, 9vw, 96px); color: #fff; line-height: 1; text-shadow: 5px 5px 0 var(--ink); }
.achv .t3 { color: #fff; font-size: 15px; margin-top: 10px; }
@keyframes achvIn { from { opacity: 0; transform: scale(1.04); } to { opacity: 1; transform: scale(1); } }

/* ---------- 空态 ---------- */
.empty {
  text-align: center; padding: 60px 20px; color: var(--dim);
}
.empty .big {
  font-family: var(--heavy); font-size: 64px; color: #2a2a30;
  transform: skewX(var(--skew)); line-height: 1;
}

/* ---------- 终端行 ---------- */
.term { font-size: 13px; color: var(--dim); }
.term::before { content: "> "; color: var(--red); }
.cursor::after {
  content: "▌"; color: var(--green); animation: blink 1s steps(2) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* ---------- 打印 ---------- */
@media print {
  .top, .side-toc, .side-kp, .acts, .toast, .crt::before, .crt::after { display: none !important; }
  body { background: #fff; color: #000; }
  .wrap { max-width: none; padding: 0; }
  h1, h2, h3, .card, .q { color: #000; text-shadow: none; }
  pre.code { background: #f4f4f4; color: #000; border: 1px solid #999; }
}

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  .crt::before, .crt::after { display: none; }
}
body.no-motion * { animation: none !important; }