/* 配色：参考雅思学习计划页 × 星露谷物语 —— 天空 / 奶油纸张 / 农田绿 / 木棕边框 */
:root {
  --paper: rgba(255, 246, 216, 0.96);
  --paper-soft: rgba(255, 252, 238, 0.98);
  --ink: #352617;
  --muted: #6c5a42;
  --line: rgba(116, 85, 44, 0.32);
  --line-strong: rgba(116, 85, 44, 0.82);
  --blue: #5f8fca;
  --blue-soft: rgba(154, 216, 255, 0.42);
  --violet: #7f6bb2;
  --violet-soft: rgba(226, 216, 255, 0.55);
  --amber: #e4a24b;
  --amber-soft: rgba(255, 217, 130, 0.58);
  --rose: #c96c5d;
  --rose-soft: rgba(255, 218, 206, 0.72);
  --green: #7fb44b;
  --green-soft: rgba(127, 180, 75, 0.2);
  --shadow: 0 6px 0 rgba(116, 85, 44, 0.34), 0 18px 32px rgba(102, 79, 53, 0.16);
  --mono: "Monaco", "SF Mono", "Menlo", "Courier New", monospace;
  --sans: "Trebuchet MS", "Avenir Next", "Verdana", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--sans);
  background:
    linear-gradient(180deg, #98d8ff 0%, #c9efff 26%, #f8efc7 26%, #f2d28c 66%, #7cbc4b 66%, #67a43d 100%);
  line-height: 1.68;
  overflow-x: hidden;
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

/* 天空网格（致敬蓝图，但放在星露谷的天上） */
body::before {
  background-image:
    repeating-linear-gradient(90deg, rgba(255,255,255,.14) 0 2px, transparent 2px 28px),
    repeating-linear-gradient(180deg, rgba(255,255,255,.12) 0 2px, transparent 2px 28px);
  opacity: .35;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.78), transparent 80%);
}

/* 云朵 + 农田条纹 */
body::after {
  background:
    radial-gradient(circle at 12% 10%, rgba(255,255,255,.5) 0 38px, transparent 39px),
    radial-gradient(circle at 29% 8%, rgba(255,255,255,.34) 0 24px, transparent 25px),
    radial-gradient(circle at 86% 6%, rgba(255,255,255,.3) 0 20px, transparent 21px),
    repeating-linear-gradient(90deg, rgba(111,170,72,.16) 0 18px, rgba(97,154,59,.16) 18px 36px);
  opacity: .38;
}

a { color: inherit; }
button, input { font: inherit; }
code, pre, .section-kicker, .terminal-body, .mini-stat span, .path-time, .path-number,
.week-list span, .doc-tab, .week-tab, .print-btn, .vision-card > span { font-family: var(--mono); }

.page {
  position: relative;
  z-index: 1;
  max-width: 1220px;
  margin: 0 auto;
  padding: 24px 20px 72px;
}

.topbar {
  position: sticky;
  top: 16px;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 18px;
  border: 3px solid var(--line-strong);
  border-radius: 12px;
  background: var(--paper-soft);
  box-shadow: var(--shadow);
}

.brand { display: flex; align-items: center; gap: 10px; min-width: 0; text-decoration: none; }
.brand-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border: 2px solid rgba(116,85,44,.42);
  border-radius: 9px;
  background: linear-gradient(180deg, #ffd982, var(--amber));
  box-shadow: 4px 4px 0 rgba(116,85,44,.24);
  color: #4a3211;
  font-weight: 900;
  font-size: .8rem;
}
.brand-copy strong, .brand-copy span { display: block; }
.brand-copy strong { font-size: .92rem; letter-spacing: .05em; }
.brand-copy span { max-width: 34ch; overflow: hidden; color: var(--muted); font-size: .82rem; text-overflow: ellipsis; white-space: nowrap; }

.nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px; }
.nav a {
  padding: 8px 11px;
  border: 2px solid rgba(116,85,44,.28);
  border-radius: 9px;
  background: rgba(255,249,232,.92);
  font-size: .88rem;
  font-weight: 700;
  text-decoration: none;
  transition: 160ms ease;
}
.nav a:hover { transform: translateY(-1px); border-color: var(--line-strong); background: var(--green-soft); }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, .82fr);
  gap: 20px;
  align-items: stretch;
  margin-top: 34px;
}

.hero-main, .hero-panel, .section {
  border: 3px solid var(--line-strong);
  border-radius: 16px;
  background: linear-gradient(180deg, var(--paper-soft), var(--paper));
  box-shadow: var(--shadow);
}

.hero-main { padding: 28px; }
.eyebrow {
  display: inline-flex;
  padding: 7px 10px;
  border: 2px solid rgba(116,85,44,.28);
  border-radius: 9px;
  background: var(--amber-soft);
  color: #5f4321;
  font-size: .84rem;
  font-weight: 800;
}

h1, h2, h3 { margin: 0; color: #355329; line-height: 1.12; text-shadow: 2px 2px 0 rgba(255,250,236,.86); }
h1 { max-width: 14ch; margin-top: 18px; font-size: clamp(2.4rem, 5.4vw, 4.6rem); }
h2 { font-size: clamp(1.8rem, 3vw, 2.55rem); }
h3 { font-size: 1.18rem; }

.hero-lead { max-width: 67ch; margin: 18px 0 0; color: var(--muted); font-size: 1.06rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 9px 14px;
  border: 2px solid rgba(116,85,44,.34);
  border-radius: 9px;
  background: rgba(255,249,232,.92);
  box-shadow: 2px 2px 0 rgba(116,85,44,.14);
  font-weight: 800;
  text-decoration: none;
  transition: 160ms ease;
}
.btn.primary { color: #1f2a12; border-color: rgba(116,85,44,.55); background: linear-gradient(180deg, #c7ec87, var(--green)); }
.btn:hover { transform: translateY(-1px); border-color: var(--line-strong); box-shadow: 3px 3px 0 rgba(116,85,44,.18); }

.hero-meta { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 10px; margin-top: 28px; }
.mini-stat { min-height: 88px; padding: 13px; border: 2px solid var(--line); border-radius: 10px; background: var(--paper-soft); }
.mini-stat strong { display: block; font-size: 1.6rem; line-height: 1; }
.mini-stat span { display: block; margin-top: 8px; color: var(--muted); font-size: .78rem; }

.hero-panel { display: flex; flex-direction: column; overflow: hidden; background: #0f172a; color: #e5edf6; }
.terminal-head { display: flex; align-items: center; justify-content: space-between; padding: 13px 16px; border-bottom: 2px solid #334155; background: #182235; color: #b8c5d6; font-family: var(--mono); font-size: .82rem; }
.terminal-dots { display: flex; gap: 7px; }
.terminal-dots i { width: 11px; height: 11px; border-radius: 50%; background: #fb7185; }
.terminal-dots i:nth-child(2) { background: #fbbf24; }
.terminal-dots i:nth-child(3) { background: #86efac; }
.terminal-body { flex: 1; padding: 22px; font-size: .87rem; line-height: 1.72; }
.terminal-body p { margin: 0 0 10px; }
.prompt { color: #86efac; }
.terminal-key { display: inline-block; min-width: 44px; margin-right: 8px; color: #7dd3fc; font-weight: 800; }
.terminal-key.pass { color: #86efac; }
.terminal-key.warn { color: #fbbf24; }
.terminal-success { margin-top: 20px !important; color: #86efac; }
.terminal-note { padding-top: 12px; border-top: 1px dashed #475569; color: #94a3b8; }

.section { margin-top: 24px; padding: 28px; scroll-margin-top: 110px; }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 22px; }
.section-head p { max-width: 56ch; margin: 0; color: var(--muted); }
.section-kicker { display: block; margin-bottom: 7px; color: #4f7b31; font-size: .76rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }

/* ---------- 展望 ---------- */
.vision-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 12px; }
.vision-card { min-height: 190px; padding: 18px; border: 2px solid var(--line); border-radius: 11px; background: var(--paper-soft); }
.vision-card > span { display: block; margin-bottom: 18px; color: var(--muted); font-size: .76rem; font-weight: 900; }
.vision-card strong { display: block; color: #355329; font-size: 1.1rem; }
.vision-card p { margin: 13px 0 0; color: var(--muted); font-size: .9rem; }
.vision-rule { margin: 14px 0 0; padding: 12px 14px; border: 2px dashed var(--line); border-radius: 9px; background: var(--green-soft); color: var(--muted); }
.vision-card.accent-blue { background: var(--blue-soft); }
.vision-card.accent-violet { background: var(--violet-soft); }
.vision-card.accent-amber { background: var(--amber-soft); }
.vision-card.accent-teal { background: var(--green-soft); }

/* ---------- 路线 ---------- */
.path-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 12px; }
.path-card { position: relative; min-height: 220px; padding: 17px; overflow: hidden; border: 2px solid var(--line); border-radius: 11px; background: var(--paper-soft); }
.path-card::after { content: ""; position: absolute; right: -34px; bottom: -46px; width: 110px; height: 110px; border: 3px solid currentColor; border-radius: 50%; opacity: .15; }
.path-number { display: block; color: var(--muted); font-size: 1.7rem; font-weight: 900; }
.path-time { display: inline-block; margin: 22px 0 8px; padding: 4px 7px; border-radius: 6px; background: rgba(255,255,255,.58); font-size: .72rem; }
.path-card h3 { color: currentColor; }
.path-card p { position: relative; z-index: 1; margin: 11px 0 0; color: var(--muted); font-size: .9rem; }
.accent-blue { color: #3e6fa9; background: var(--blue-soft); }
.accent-violet { color: #695597; background: var(--violet-soft); }
.accent-amber { color: #9f671e; background: var(--amber-soft); }
.accent-rose { color: #9b4e43; background: var(--rose-soft); }
.accent-teal { color: #4f7b31; background: var(--green-soft); }

.week-list { display: grid; gap: 9px; margin-top: 18px; }
.week-list article { display: grid; grid-template-columns: 58px 280px 1fr; gap: 12px; align-items: center; padding: 12px 14px; border: 2px solid var(--line); border-radius: 9px; background: rgba(255,252,238,.78); }
.week-list span { color: #3e6fa9; font-size: .8rem; font-weight: 900; }
.week-list strong { color: #355329; }
.week-list p { margin: 0; color: var(--muted); font-size: .9rem; }
.week-list p a { color: #376da8; font-weight: 800; text-underline-offset: 3px; }
.week-list article.planned { opacity: .72; background: rgba(255,250,232,.5); }

/* ---------- 周深拆 ---------- */
.reader-section { padding-bottom: 34px; }
.week-switcher { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 10px; }
.week-tab {
  min-height: 46px;
  padding: 9px 16px;
  border: 2px solid var(--line);
  border-radius: 9px;
  background: var(--paper-soft);
  color: var(--ink);
  cursor: pointer;
  font-size: .88rem;
  font-weight: 800;
  transition: 150ms ease;
}
.week-tab:hover { border-color: var(--line-strong); transform: translateY(-1px); }
.week-tab.is-active { border-color: var(--line-strong); background: linear-gradient(180deg, #c7ec87, var(--green)); color: #1f2a12; }

.doc-switcher { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 17px; }
.doc-tab, .print-btn { min-height: 40px; padding: 8px 12px; border: 2px solid var(--line); border-radius: 8px; background: var(--paper-soft); color: var(--ink); cursor: pointer; font-size: .8rem; font-weight: 800; transition: 150ms ease; }
.doc-tab:hover, .print-btn:hover { border-color: var(--line-strong); transform: translateY(-1px); }
.doc-tab.is-active { border-color: var(--line-strong); background: linear-gradient(180deg, #ffd982, var(--amber)); color: #4a3211; }
.print-btn { margin-left: auto; background: var(--blue-soft); }

.reader-layout { display: grid; grid-template-columns: 250px minmax(0,1fr); gap: 16px; align-items: start; }
.reader-nav { position: sticky; top: 108px; max-height: calc(100vh - 130px); overflow: auto; padding: 16px; border: 2px solid var(--line); border-radius: 10px; background: rgba(255,252,238,.9); }
.reader-nav > strong { display: block; margin-bottom: 10px; color: #355329; }
.reader-nav nav { display: grid; gap: 4px; }
.reader-nav a { display: block; padding: 6px 8px; border-radius: 6px; color: var(--muted); font-size: .79rem; line-height: 1.35; text-decoration: none; }
.reader-nav a:hover { background: var(--green-soft); color: var(--ink); }
.reader-nav a.toc-h3 { padding-left: 18px; font-size: .74rem; }
.toc-loading { color: var(--muted); font-size: .8rem; }

.markdown-body { min-width: 0; padding: 26px clamp(18px,4vw,44px); border: 2px solid var(--line-strong); border-radius: 11px; background: #fffdf3; box-shadow: inset 0 0 0 5px rgba(228,162,75,.08); overflow-wrap: anywhere; }
.markdown-body > :first-child { margin-top: 0; }
.markdown-body h1, .markdown-body h2, .markdown-body h3, .markdown-body h4 { scroll-margin-top: 115px; }
.markdown-body h1 { max-width: none; margin: 0 0 22px; padding-bottom: 15px; border-bottom: 3px double var(--line); font-size: clamp(1.9rem,3.6vw,3rem); }
.markdown-body h2 { margin: 42px 0 16px; padding: 10px 13px; border-left: 7px solid var(--green); background: var(--green-soft); font-size: 1.5rem; }
.markdown-body h3 { margin: 30px 0 12px; color: #4c6c36; font-size: 1.2rem; }
.markdown-body h4 { margin: 24px 0 10px; color: #5f4321; }
.markdown-body p { margin: 0 0 15px; }
.markdown-body ul, .markdown-body ol { padding-left: 1.5rem; }
.markdown-body li { margin: 5px 0; }
.markdown-body blockquote { margin: 18px 0; padding: 13px 16px; border: 2px solid rgba(95,143,202,.35); border-left: 6px solid var(--blue); border-radius: 8px; background: var(--blue-soft); color: #4d5864; }
.markdown-body blockquote p:last-child { margin-bottom: 0; }
.markdown-body code { padding: 2px 5px; border: 1px solid rgba(116,85,44,.18); border-radius: 5px; background: rgba(228,162,75,.14); font-size: .88em; }
.markdown-body pre { position: relative; margin: 18px 0; padding: 18px; overflow: auto; border: 2px solid #334155; border-radius: 9px; background: #101827; color: #dce7f2; line-height: 1.62; }
.markdown-body pre code { padding: 0; border: 0; background: none; color: inherit; }
.copy-code { position: absolute; top: 8px; right: 8px; padding: 4px 8px; border: 1px solid #64748b; border-radius: 5px; background: #1e293b; color: #dce7f2; cursor: pointer; font-size: .72rem; }
.markdown-body table { width: 100%; margin: 20px 0; border-collapse: collapse; font-size: .88rem; }
.markdown-body th, .markdown-body td { padding: 9px 10px; border: 1px solid var(--line); text-align: left; vertical-align: top; }
.markdown-body th { background: var(--amber-soft); color: #5f4321; }
.markdown-body tr:nth-child(even) td { background: rgba(255,246,216,.46); }
.table-wrap { overflow-x: auto; }
.markdown-body hr { height: 0; margin: 32px 0; border: 0; border-top: 2px dashed var(--line); }
.markdown-body a { color: #376da8; font-weight: 700; text-underline-offset: 3px; }
.loading-card { min-height: 320px; display: grid; place-content: center; justify-items: center; color: var(--muted); }
.loading-card span { width: 38px; height: 38px; border: 4px solid var(--line); border-top-color: var(--green); border-radius: 50%; animation: spin .8s linear infinite; }
.error-card { padding: 20px; border: 2px solid var(--rose); border-radius: 9px; background: var(--rose-soft); }
@keyframes spin { to { transform: rotate(360deg); } }

/* 代码高亮 token（深色 pre 内） */
.tok-kw { color: #93c5fd; }
.tok-str { color: #fbbf24; }
.tok-com { color: #7c8ea3; font-style: italic; }
.tok-num { color: #f9a8d4; }
.tok-pre { color: #86efac; }

.footer { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin-top: 24px; padding: 22px 6px 0; color: #f9f3d6; text-shadow: 1px 1px 0 rgba(53,38,23,.34); }
.footer strong, .footer span { display: block; }
.footer span { margin-top: 4px; font-size: .86rem; }
.footer-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 12px; }
.footer-links a { font-weight: 800; text-underline-offset: 3px; }

@media (max-width: 980px) {
  .hero { grid-template-columns: 1fr; }
  .path-grid, .vision-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .reader-layout { grid-template-columns: 1fr; }
  .reader-nav { position: static; max-height: none; }
  .reader-nav nav { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .week-list article { grid-template-columns: 58px 1fr; }
  .week-list p { grid-column: 1 / -1; }
}

@media (max-width: 760px) {
  .page { padding: 12px 10px 48px; }
  .topbar { position: relative; top: 0; align-items: flex-start; padding: 12px; }
  .brand-copy span { display: none; }
  .nav { gap: 5px; }
  .nav a { padding: 6px 8px; font-size: .76rem; }
  .hero { margin-top: 18px; }
  .hero-main, .section { padding: 20px 16px; }
  .hero-meta { grid-template-columns: 1fr; }
  .mini-stat { min-height: 0; }
  .section-head { display: block; }
  .section-head p { margin-top: 12px; }
  .path-grid, .vision-grid { grid-template-columns: 1fr; }
  .path-card { min-height: 180px; }
  .print-btn { width: 100%; margin-left: 0; }
  .markdown-body { padding: 20px 14px; }
  .reader-nav nav { grid-template-columns: 1fr; }
  .footer { display: block; }
  .footer-links { justify-content: flex-start; margin-top: 14px; }
}

@media (max-width: 460px) {
  .topbar { display: block; }
  .nav { justify-content: flex-start; margin-top: 12px; }
  h1 { font-size: 2.3rem; }
  .week-tab { flex: 1 1 100%; }
  .doc-tab { flex: 1 1 calc(50% - 8px); }
}

@media print {
  body { background: #fff; }
  body::before, body::after, .topbar, .hero, #vision, #roadmap, .footer, .section-head, .week-switcher, .doc-switcher, .reader-nav { display: none !important; }
  .page, .section, .reader-layout, .markdown-body { max-width: none; margin: 0; padding: 0; border: 0; box-shadow: none; background: #fff; }
  #reader { display: block; }
  .markdown-body pre { white-space: pre-wrap; }
}