@import url("nav-chrome.css?v=20260831ae");
@import url("site-promo.css?v=20260831ah");
/* Shared legal / support pages — night taxi brand */
html[lang="en"] {
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", sans-serif;
}
:root {
  color-scheme: dark;
  --bg: #080a0f;
  --bg-elev: #12151e;
  --text: #eef1f6;
  --muted: #c5ccd8;
  --amber: #f5b800;
  --amber-dim: #c49200;
  --line: rgba(255, 255, 255, 0.08);
  --link: #ffd45c;
  --max: 46rem;
  --font: "PingFang HK", "Noto Sans HK", "Hiragino Sans CNS", "Heiti TC", "Helvetica Neue", sans-serif;
  /* Compare table / legend */
  --c-official: #6eb6ff;
  --c-official-bg: rgba(80, 150, 230, 0.14);
  --c-a: #5ed4c8;
  --c-a-bg: rgba(60, 180, 170, 0.14);
  --c-b: #c9a0ff;
  --c-b-bg: rgba(160, 120, 230, 0.14);
  --c-c: #b0b8c8;
  --c-c-bg: rgba(150, 160, 180, 0.12);
  --c-us: #8eeba0;
  --c-us-bg: rgba(140, 235, 160, 0.18);
  --c-warn: #ffb020;
  /* Feature guide pages (key cards, accents) */
  --c-soon: #ffb020;
  --c-thesis: #3dd6c6;
  --c-price: #7dd87d;
  --c-practice: #6eb6ff;
  --c-slang: #ff9f43;
  --c-source: #a78bfa;
  --c-caution: #ff6b6b;
  --c-offline: #94a3b8;
  --c-parta: #ff6b6b;
  --c-partb: #5b9fff;
  --c-trap: #e879f9;
  --c-ambig: #fbbf24;
  --c-rhv: #34d399;
}
:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  line-height: 1.65;
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(245, 184, 0, 0.12), transparent 55%),
    radial-gradient(900px 500px at 100% 0%, rgba(40, 80, 160, 0.18), transparent 50%),
    var(--bg);
  min-height: 100vh;
}
a { color: var(--link); text-underline-offset: 0.15em; }
a:hover { color: #ffe08a; }
/* Same fixed chrome as marketing home — keeps CTA / lang in one place across pages. */
.nav {
  position: fixed; inset: 0 0 auto; z-index: 40;
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; padding: 0.65rem 1.1rem;
  background: rgba(7, 9, 14, 0.92);
}
.nav-brand {
  display: flex; align-items: center; gap: 0.65rem; min-height: 44px;
  min-width: 0; flex: 0 1 auto;
  text-decoration: none; color: var(--text);
  font-weight: 700; font-size: 0.92rem; letter-spacing: -0.01em;
}
.nav-brand span {
  white-space: nowrap;
}
.nav-brand img {
  width: 36px; height: 36px; max-width: none; border-radius: 9px; flex-shrink: 0;
}
.nav-links {
  display: flex; align-items: center; gap: 0.35rem; flex-shrink: 1; min-width: 0;
}
.site-lang {
  display: inline-flex; align-items: center; gap: 0;
  margin-inline: 0.1rem; padding: 0.12rem;
  border: 1px solid var(--line); border-radius: 999px;
}
.nav-links .site-lang a, .nav-links .site-lang span {
  min-height: 32px; padding: 0 0.62rem; border-radius: 999px;
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.04em;
  text-decoration: none; color: var(--muted);
  display: inline-flex; align-items: center;
}
.site-lang [aria-current="true"] {
  background: rgba(245, 184, 0, 0.18); color: var(--amber);
}
.site-lang a:hover { color: var(--text); }
.nav-links > a {
  color: var(--muted); text-decoration: none; font-size: 0.88rem;
  min-height: 44px; padding: 0 0.55rem;
  display: inline-flex; align-items: center;
}
.nav-links > a:hover, .nav-links > a[aria-current="page"] { color: var(--amber); }
.nav-links a.nav-hide-sm { display: none; }
@media (min-width: 640px) {
  .nav-links a.nav-hide-sm { display: inline-flex; }
}
/* 攻略目錄永遠顯示（手機都要入到；賣點／FAQ 錨點可收） */
.nav-links > a.nav-hide-sm[href*="guide.html"] {
  display: inline-flex;
}
/* 大賣場特價感 — 試用永遠顯示，跟住主頁右邊（只動 opacity／transform，利於合成層） */
.nav-links > a.nav-trial {
  position: relative;
  z-index: 1;
  color: #fff !important;
  background: linear-gradient(180deg, #ff4d4d 0%, #d10000 55%, #a80000 100%);
  font-weight: 900;
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  min-height: 32px;
  padding: 0 0.72rem;
  border-radius: 3px;
  border: 2px solid #ffe566;
  box-shadow: 0 0 0 1px #b30000, 0 2px 0 #6e0000;
  text-shadow: 0 1px 0 rgba(0, 0, 0, 0.35);
  transform: rotate(-2deg);
  flex-shrink: 0;
}
.nav-links > a.nav-trial::after {
  content: "";
  position: absolute; inset: -2px;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.35);
  pointer-events: none;
  opacity: 0;
  animation: nav-trial-flash 1.05s steps(2, end) infinite;
}
.nav-links > a.nav-trial:hover,
.nav-links > a.nav-trial[aria-current="page"] {
  color: #fff !important;
  transform: rotate(-2deg) translateY(-1px);
}
@keyframes nav-trial-flash {
  50% { opacity: 1; }
}
@media (prefers-reduced-motion: reduce) {
  .nav-links > a.nav-trial::after { animation: none; }
}
.nav-cta {
  padding: 0 0.95rem; border-radius: 999px; background: var(--amber);
  color: #14100a !important; font-weight: 700; font-size: 0.88rem;
  text-decoration: none !important;
}
.nav-cta:hover { transform: translateY(-1px); color: #14100a !important; }
.nav-cta-web {
  background: #0a0a0a;
  color: #f5f0e8 !important;
  border: 1px solid rgba(255, 255, 255, 0.14);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.06) inset;
}
.nav-cta-web:hover {
  background: #161616;
  color: #fff !important;
}
.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 5rem 1.25rem 4rem;
}
.wrap.compare-page {
  max-width: min(56rem, 100%);
}
/* 攻略目錄／支援 — 跟主頁 section 闊度，唔再中間一條窄欄 */
.wrap.hub-page {
  max-width: min(72rem, 100%);
  min-width: 0;
}
@media (min-width: 768px) {
  .nav { padding: 0.75rem 2rem; }
  .wrap.hub-page { padding-left: 2rem; padding-right: 2rem; }
  .hub-page .guide-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
  }
  .hub-page .support-grid {
    display: grid;
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.35fr);
    gap: 1.25rem 1.5rem;
    align-items: start;
  }
  .hub-page .faq-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.85rem;
  }
}
@media (min-width: 1100px) {
  .hub-page .guide-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.15rem;
  }
}
.hub-page .guide-card {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  height: 100%;
}
.hub-page .guide-card p { margin-top: auto; }
.hub-page .hub-intro {
  margin-top: 1rem;
}
.hub-page .support-panel {
  margin: 0;
}
.hub-page .support-grid > div > h2:first-child {
  margin-top: 0;
}
.hub-page .faq-card {
  margin: 0;
  height: 100%;
}
.hub-page .faq-card h3 {
  margin-top: 0;
  color: var(--amber);
  font-size: 0.98rem;
}
.hub-page .faq-card p { margin: 0.45rem 0 0; color: var(--muted); font-size: 0.92rem; }
.hub-page .links-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.85rem;
  list-style: none;
  padding: 0;
  margin: 0.75rem 0 0;
}
.hub-page .links-row li { margin: 0; }
.hub-page .links-row a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0.15rem 0;
}
.meta { color: var(--muted); font-size: 0.95rem; }
h1 { font-size: clamp(1.75rem, 5vw, 2.35rem); line-height: 1.2; letter-spacing: -0.02em; margin: 0 0 0.75rem; }
h2 { font-size: 1.15rem; margin-top: 2.25rem; margin-bottom: 0.65rem; color: var(--amber); letter-spacing: 0.01em; }
h3 { font-size: 1.02rem; margin-top: 1.35rem; color: var(--text); }
ul, ol { padding-left: 1.25rem; }
table { width: 100%; border-collapse: collapse; font-size: 0.92rem; margin: 1rem 0; }
th, td { border: 1px solid var(--line); padding: 0.55rem 0.65rem; text-align: left; vertical-align: top; }
th { background: var(--bg-elev); color: var(--amber); }
/* Highlight “this app” column in comparison tables */
table.compare-apps col.app-highlight,
table.compare-apps th.app-highlight,
table.compare-apps td.app-highlight {
  background: rgba(140, 235, 160, 0.22);
}
table.compare-apps th.app-highlight {
  color: #b8f5c4;
  box-shadow: inset 0 0 0 1px rgba(140, 235, 160, 0.45);
}
/* Features this app has that the other types typically lack */
table.compare-apps .exclusive {
  color: #ff4d4d;
  font-weight: 700;
}
table.compare-apps {
  width: 100%;
  max-width: 100%;
  table-layout: fixed;
  font-size: 0.82rem;
  line-height: 1.4;
  margin: 1rem 0 1.25rem;
}
table.compare-apps col.col-topic { width: 14%; }
table.compare-apps col.col-a,
table.compare-apps col.col-b,
table.compare-apps col.col-c { width: 19%; }
table.compare-apps col.app-highlight { width: 29%; }
table.compare-apps th[scope="row"] {
  font-weight: 700;
  color: #d8dee9;
}
table.compare-apps th,
table.compare-apps td {
  padding: 0.45rem 0.5rem;
  word-wrap: break-word;
  overflow-wrap: anywhere;
  hyphens: auto;
}
@media (max-width: 720px) {
  table.compare-apps { font-size: 0.72rem; }
  table.compare-apps th, table.compare-apps td { padding: 0.35rem 0.35rem; }
}

/* —— Compare article: colour scanning aids —— */
.compare-page .card-disclose {
  border-left: 4px solid var(--c-warn);
  background: rgba(255, 176, 32, 0.1);
}
.compare-page .card-disclose strong:first-child { color: var(--c-warn); }
.compare-page .takeaways {
  list-style: none;
  padding: 0;
  margin: 1rem 0 1.5rem;
  display: grid;
  gap: 0.65rem;
}
.compare-page .takeaways li {
  margin: 0;
  padding: 0.75rem 0.9rem 0.75rem 0.95rem;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(18, 21, 30, 0.65);
  border-left-width: 4px;
  color: #d8dee9;
  font-size: 0.95rem;
}
.compare-page .takeaways li.take-official { border-left-color: var(--c-official); }
.compare-page .takeaways li.take-method { border-left-color: var(--amber); }
.compare-page .takeaways li.take-check { border-left-color: #7ec8ff; }
.compare-page .takeaways li.take-us { border-left-color: var(--c-us); background: var(--c-us-bg); }
.compare-page .takeaways li.take-ai { border-left-color: #ff7a9a; }
.compare-page .takeaways .tag {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  padding: 0.12rem 0.45rem;
  border-radius: 999px;
  margin-right: 0.4rem;
  vertical-align: 0.1em;
}
.compare-page .take-official .tag { background: var(--c-official-bg); color: var(--c-official); }
.compare-page .take-method .tag { background: rgba(245, 184, 0, 0.18); color: var(--amber); }
.compare-page .take-check .tag { background: rgba(126, 200, 255, 0.16); color: #9ad0ff; }
.compare-page .take-us .tag { background: rgba(140, 235, 160, 0.22); color: var(--c-us); }
.compare-page .take-ai .tag { background: rgba(255, 122, 154, 0.16); color: #ff9bb0; }

.compare-page .type-grid {
  display: grid;
  gap: 0.75rem;
  margin: 1rem 0 1.75rem;
}
@media (min-width: 720px) {
  .compare-page .type-grid { grid-template-columns: 1fr 1fr; }
}
.compare-page .type-card {
  margin: 0;
  padding: 0.95rem 1.05rem;
  border-radius: 14px;
  border: 1px solid var(--line);
  border-top-width: 3px;
}
.compare-page .type-card dt {
  font-weight: 800;
  font-size: 0.98rem;
  margin: 0 0 0.45rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  color: var(--text);
}
.compare-page .type-card dd {
  margin: 0;
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.55;
}
.compare-page .type-badge {
  display: inline-block;
  font-size: 0.66rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  padding: 0.18rem 0.5rem;
  border-radius: 999px;
  flex-shrink: 0;
}
.compare-page .type-official {
  border-top-color: var(--c-official);
  background: var(--c-official-bg);
}
.compare-page .type-official .type-badge { background: rgba(110, 182, 255, 0.25); color: var(--c-official); }
.compare-page .type-a {
  border-top-color: var(--c-a);
  background: var(--c-a-bg);
}
.compare-page .type-a .type-badge { background: rgba(94, 212, 200, 0.22); color: var(--c-a); }
.compare-page .type-b {
  border-top-color: var(--c-b);
  background: var(--c-b-bg);
}
.compare-page .type-b .type-badge { background: rgba(201, 160, 255, 0.22); color: #d4b8ff; }
.compare-page .type-c {
  border-top-color: var(--c-c);
  background: var(--c-c-bg);
}
.compare-page .type-c .type-badge { background: rgba(176, 184, 200, 0.2); color: #c5ccd8; }

.compare-page .legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 0.75rem;
  margin: 0.75rem 0 1rem;
  font-size: 0.82rem;
  color: var(--muted);
}
.compare-page .legend span {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}
.compare-page .legend i {
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 3px;
  display: inline-block;
}
.compare-page .legend .sw-official { background: var(--c-official); }
.compare-page .legend .sw-a { background: var(--c-a); }
.compare-page .legend .sw-b { background: var(--c-b); }
.compare-page .legend .sw-c { background: var(--c-c); }
.compare-page .legend .sw-us { background: var(--c-us); }
.compare-page .legend .sw-ex { background: #ff4d4d; }

table.compare-apps thead th.col-official { color: var(--c-official, #6eb6ff); background: rgba(80, 150, 230, 0.16); }
table.compare-apps thead th.col-a { color: var(--c-a, #5ed4c8); background: rgba(60, 180, 170, 0.16); }
table.compare-apps thead th.col-b { color: #d4b8ff; background: rgba(160, 120, 230, 0.16); }
table.compare-apps thead th.col-c { color: #c5ccd8; background: rgba(150, 160, 180, 0.14); }
table.compare-apps td.cell-no {
  color: #8b93a3;
  font-weight: 600;
}
table.compare-apps td.cell-yes {
  color: #9ad4ff;
}
.compare-page .verdict-grid {
  display: grid;
  gap: 0.75rem;
  margin: 1rem 0 1.5rem;
}
@media (min-width: 720px) {
  .compare-page .verdict-grid { grid-template-columns: 1fr 1fr; }
}
.compare-page .verdict-pros {
  border: 1px solid rgba(140, 235, 160, 0.35);
  background: rgba(140, 235, 160, 0.1);
  border-radius: 14px;
  padding: 0.95rem 1.05rem;
}
.compare-page .verdict-cons {
  border: 1px solid rgba(255, 176, 32, 0.35);
  background: rgba(255, 176, 32, 0.1);
  border-radius: 14px;
  padding: 0.95rem 1.05rem;
}
.compare-page .verdict-pros h3,
.compare-page .verdict-cons h3 {
  margin: 0 0 0.5rem;
  font-size: 0.95rem;
}
.compare-page .verdict-pros h3 { color: #b8f5c4; }
.compare-page .verdict-cons h3 { color: var(--c-warn, #ffb020); }
.compare-page .verdict-pros ul,
.compare-page .verdict-cons ul {
  margin: 0;
  padding-left: 1.15rem;
  font-size: 0.9rem;
  color: var(--muted);
}
.compare-page .cta-trial {
  margin: 1rem 0 1.5rem;
  padding: 0.95rem 1.1rem;
  border-radius: 14px;
  border: 1px solid rgba(245, 184, 0, 0.4);
  background: rgba(245, 184, 0, 0.1);
}
.compare-page .cta-trial p { margin: 0; color: #e8e4d4; }
.compare-page .cta-trial a { font-weight: 800; }
.compare-page .pros-box {
  border: 1px solid rgba(140, 235, 160, 0.35);
  background: rgba(140, 235, 160, 0.08);
  border-radius: 14px;
  padding: 1rem 1.1rem;
  margin: 1rem 0 1.5rem;
}
.compare-page .pros-box > p:first-child {
  margin-top: 0;
  color: #c5d0e0;
  font-size: 0.95rem;
}
.compare-page .pros-box > p:first-child strong {
  color: #b8f5c4;
}
.compare-page .pros-list {
  list-style: none;
  padding: 0;
  margin: 0.85rem 0 0;
  display: grid;
  gap: 0.55rem;
}
.compare-page .pros-list li {
  margin: 0;
  padding: 0.7rem 0.85rem;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(12, 14, 20, 0.55);
  border-left-width: 4px;
  color: #c8d0de;
  font-size: 0.92rem;
  line-height: 1.5;
}
.compare-page .pros-list .pros-label {
  display: block;
  font-weight: 800;
  font-size: 0.95rem;
  margin-bottom: 0.2rem;
}
.compare-page .pros-syllabus { border-left-color: #6eb6ff; }
.compare-page .pros-syllabus .pros-label { color: #8ec8ff; }
.compare-page .pros-stats { border-left-color: #5ed4c8; }
.compare-page .pros-stats .pros-label { color: #7ee6db; }
.compare-page .pros-guides { border-left-color: #f5b800; }
.compare-page .pros-guides .pros-label { color: #ffd45c; }
.compare-page .pros-pdf { border-left-color: #c9a0ff; }
.compare-page .pros-pdf .pros-label { color: #d4b8ff; }
.compare-page .pros-miss { border-left-color: #ff4d4d; }
.compare-page .pros-miss .pros-label { color: #ff7a7a; }
.compare-page .pros-bundle { border-left-color: #8eeba0; }
.compare-page .pros-bundle .pros-label { color: #b8f5c4; }
.compare-page .pros-ai { border-left-color: #ff7a9a; }
.compare-page .pros-ai .pros-label { color: #ff9bb0; }
.compare-page h2.pros-heading {
  color: #b8f5c4;
}
.compare-page .read-rules {
  display: grid;
  gap: 0.55rem;
  margin: 0.85rem 0 1.25rem;
}
.compare-page .read-rules .rule {
  padding: 0.65rem 0.85rem;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: rgba(18, 21, 30, 0.7);
  font-size: 0.92rem;
  color: #d5dae5;
}
.compare-page .read-rules .rule b {
  display: inline-block;
  min-width: 1.4rem;
  color: var(--amber);
}

.card {
  background: rgba(18, 21, 30, 0.72); border: 1px solid var(--line);
  border-radius: 14px; padding: 1rem 1.1rem; margin: 1.25rem 0;
}
.crumb {
  margin: 0 0 0.85rem; font-size: 0.88rem; color: var(--muted);
}
.crumb a { text-decoration: none; }
.guide-list {
  display: grid; gap: 0.85rem; margin: 1.5rem 0 2rem;
}
.guide-card {
  display: block; text-decoration: none; color: inherit;
  background: rgba(18, 21, 30, 0.72); border: 1px solid var(--line);
  border-radius: 14px; padding: 1.05rem 1.15rem;
  transition: border-color 0.15s ease, background 0.15s ease;
}
.guide-card:hover {
  border-color: rgba(245, 184, 0, 0.45);
  background: rgba(24, 28, 40, 0.9);
  color: inherit;
}
.guide-card h2 {
  margin: 0.35rem 0 0.4rem; font-size: 1.08rem; color: var(--text);
  letter-spacing: -0.01em;
}
.guide-card p {
  margin: 0; color: var(--muted); font-size: 0.92rem;
}
.guide-cat {
  display: inline-block; font-size: 0.72rem; font-weight: 700;
  letter-spacing: 0.04em; color: var(--amber); text-transform: none;
}
.guide-badge {
  display: inline-block; margin-right: 0.45rem; padding: 0.12rem 0.45rem;
  border-radius: 4px; font-size: 0.68rem; font-weight: 800;
  background: rgba(245, 184, 0, 0.18); color: var(--amber);
}
.hub-foot { color: var(--muted); font-size: 0.92rem; }
.guide-more {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}
.guide-more > h2 {
  margin-top: 0;
}
.guide-more-note {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 0.92rem;
}
.guide-card h3 {
  margin: 0.35rem 0 0.4rem;
  font-size: 1.08rem;
  color: var(--text);
  letter-spacing: -0.01em;
}
.lang-switch { display: flex; gap: 0.5rem; margin: 1rem 0 1.5rem; }
.lang-switch a, .lang-switch span {
  display: inline-block; padding: 0.35rem 0.75rem; border-radius: 999px;
  border: 1px solid var(--line); font-size: 0.85rem; text-decoration: none; color: var(--muted);
}
.lang-switch .active { background: rgba(245, 184, 0, 0.15); color: var(--amber); border-color: rgba(245, 184, 0, 0.35); }
.zh-block { border-top: 1px solid var(--line); margin-top: 3rem; padding-top: 2rem; }
footer.site-foot {
  margin-top: 3rem; padding-top: 1.25rem; border-top: 1px solid var(--line);
  color: var(--muted); font-size: 0.88rem;
}
footer.site-foot > p { margin: 0 0 0.55rem; }
footer.site-foot > p:last-child { margin-bottom: 0; }
footer.site-foot .site-foot-disclaimer {
  font-size: 0.8rem;
  line-height: 1.45;
  max-width: 42rem;
  opacity: 0.92;
}
code { font-size: 0.9em; background: rgba(255,255,255,0.06); padding: 0.1em 0.35em; border-radius: 4px; }
.err-wrap { text-align: center; padding: 4rem 1.25rem 5rem; }
.err-code { font-size: clamp(3.5rem, 14vw, 6rem); font-weight: 700; color: var(--amber); letter-spacing: -0.04em; line-height: 1; margin: 0; }
.err-cta {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 44px; margin-top: 1.5rem; padding: 0.7rem 1.4rem; border-radius: 999px;
  background: var(--amber); color: #14100a; font-weight: 700; text-decoration: none;
}
.err-cta:hover { color: #14100a; filter: brightness(1.05); }
.err-links { margin-top: 1.25rem; display: flex; gap: 0.5rem; justify-content: center; flex-wrap: wrap; }
.err-links a {
  color: var(--muted); min-height: 44px; display: inline-flex; align-items: center; padding: 0 0.5rem;
}
/* AI tutor guide — sample Q&A */
.tutor-samples { display: grid; gap: 1rem; margin: 1.25rem 0 1.75rem; min-width: 0; }
.tutor-turn {
  background: rgba(18, 21, 30, 0.72);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem 1.1rem 1.05rem;
  min-width: 0;
  max-width: 100%;
  overflow-wrap: anywhere;
  word-break: break-word;
}
.tutor-turn .tutor-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--amber);
  margin-bottom: 0.55rem;
}
.tutor-q {
  margin: 0 0 0.85rem;
  padding: 0.7rem 0.85rem;
  border-radius: 12px 12px 4px 12px;
  background: rgba(245, 184, 0, 0.12);
  border: 1px solid rgba(245, 184, 0, 0.28);
  font-weight: 600;
  font-size: 0.98rem;
}
.tutor-q::before {
  content: "考生：";
  display: block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--amber);
  margin-bottom: 0.25rem;
}
html[lang^="en"] .tutor-q::before { content: "Candidate: "; }
.tutor-a {
  margin: 0;
  padding: 0.75rem 0.85rem;
  border-radius: 12px 12px 12px 4px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
  font-size: 0.94rem;
  color: var(--text);
  min-width: 0;
  overflow-wrap: anywhere;
  word-break: break-word;
}
.tutor-a::before {
  content: "AI 助教：";
  display: block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--muted);
  margin-bottom: 0.35rem;
}
html[lang^="en"] .tutor-a::before { content: "AI tutor: "; }
.tutor-a p { margin: 0 0 0.55em; }
.tutor-a p:last-child { margin-bottom: 0; }
.tutor-a blockquote {
  margin: 0.45em 0 0.65em;
  padding: 0.45rem 0.75rem;
  border-left: 3px solid rgba(245, 184, 0, 0.55);
  color: var(--muted);
  background: rgba(255, 255, 255, 0.03);
}
.tutor-a hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 0.85rem 0;
}
.tutor-a h4 {
  margin: 0.75em 0 0.4em;
  font-size: 0.98rem;
  color: var(--amber);
}
.cta-row {
  display: flex; flex-wrap: wrap; gap: 0.65rem; align-items: center;
  margin: 1.25rem 0 0.5rem;
}
.cta-row .err-cta { margin-top: 0; }
.cta-row a.secondary {
  color: var(--muted); font-size: 0.92rem; min-height: 44px;
  display: inline-flex; align-items: center;
}

/* —— Feature guide pages: shared key cards & section markers —— */
.feature-page .wrap { max-width: 48rem; min-width: 0; }
.ai-tutor-page .wrap { overflow-x: clip; }
.feature-page h1 { color: #fff; margin-top: 0.15rem; }
.feature-page .key-grid,
.feature-page .design-grid {
  list-style: none;
  padding: 0;
  margin: 1rem 0 1.5rem;
  display: grid;
  gap: 0.75rem;
  grid-template-columns: 1fr;
  align-items: stretch;
}
@media (min-width: 640px) {
  .feature-page .key-grid,
  .feature-page .design-grid {
    grid-template-columns: 1fr 1fr;
    grid-auto-rows: 1fr;
  }
}
.feature-page .key,
.feature-page .design {
  margin: 0;
  padding: 0.85rem 0.95rem;
  border-radius: 12px;
  background: rgba(18, 21, 30, 0.85);
  border: 1px solid var(--line);
  font-size: 0.92rem;
  color: #dce3ef;
  box-shadow: inset 3px 0 0 #666;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  height: 100%;
  min-height: 0;
  line-height: 1.55;
  box-sizing: border-box;
}
.feature-page .key strong,
.feature-page .design strong {
  display: block;
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  margin: 0;
  font-weight: 800;
  line-height: 1.35;
  min-height: 1.35em;
}
.feature-page .key-body {
  display: block;
  margin: 0;
  color: #dce3ef;
  font-weight: 400;
}
.feature-page .key-soon { box-shadow: inset 3px 0 0 var(--c-soon); }
.feature-page .key-soon strong { color: var(--c-soon); }
.feature-page .key-price { box-shadow: inset 3px 0 0 var(--c-price); }
.feature-page .key-price strong { color: var(--c-price); }
.feature-page .key-practice { box-shadow: inset 3px 0 0 var(--c-practice); }
.feature-page .key-practice strong { color: var(--c-practice); }
.feature-page .key-slang { box-shadow: inset 3px 0 0 var(--c-slang); }
.feature-page .key-slang strong { color: var(--c-slang); }
.feature-page .key-source { box-shadow: inset 3px 0 0 var(--c-source); }
.feature-page .key-source strong { color: #c4b5fd; }
.feature-page .key-caution { box-shadow: inset 3px 0 0 var(--c-caution); }
.feature-page .key-caution strong { color: #ff8f8f; }
.feature-page .key-offline { box-shadow: inset 3px 0 0 var(--c-offline); }
.feature-page .key-offline strong { color: #cbd5e1; }
.feature-page .key-same { box-shadow: inset 3px 0 0 var(--c-partb); }
.feature-page .key-same strong { color: #9fd4ff; }
.feature-page .key-rhv { box-shadow: inset 3px 0 0 var(--c-rhv); }
.feature-page .key-rhv strong { color: #6ee7b7; }
.feature-page .key-places { box-shadow: inset 3px 0 0 var(--c-offline); }
.feature-page .key-places strong { color: #cbd5e1; }
.feature-page .key-open { box-shadow: inset 3px 0 0 var(--amber); }
.feature-page .key-open strong { color: #ffd45c; }
.feature-page h2.sec {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 1.15rem;
}
.feature-page h2.sec::before {
  content: "";
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 2px;
  flex-shrink: 0;
  background: var(--amber);
}
.feature-page .card-kicker { margin: 0 0 0.45rem; }
.feature-page .label-caution {
  display: inline-block;
  margin: 0;
  padding: 0.2rem 0.6rem;
  border-radius: 6px;
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  line-height: 1.35;
  background: rgba(255, 107, 107, 0.16);
  color: #ffb4a2;
}
.feature-page .card--caution {
  border-color: rgba(255, 107, 107, 0.42);
  background: linear-gradient(135deg, rgba(255, 107, 107, 0.1), rgba(18, 21, 30, 0.85));
  box-shadow: inset 4px 0 0 var(--c-caution);
  padding: 1.05rem 1.15rem;
}
.feature-page .card--caution > p { margin: 0; line-height: 1.65; }
.feature-page .hi-warn { color: #ffb4a2; font-weight: 700; }
.feature-page .steps {
  margin: 0.75rem 0 1rem;
  padding-left: 1.25rem;
  color: #dce3ef;
}
.feature-page .steps li { margin: 0.45rem 0; line-height: 1.55; }
.feature-page .steps li::marker { color: var(--amber); font-weight: 700; }
.feature-page .detail-list {
  margin: 0.75rem 0 1rem;
  padding-left: 1.25rem;
  color: #dce3ef;
}
.feature-page .detail-list li { margin: 0.45rem 0; line-height: 1.55; }

/* —— AI tutor page —— */
.ai-tutor-page {
.ai-tutor-page .card--soon,
.ai-tutor-page .card--thesis {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding: 1.05rem 1.15rem;
}
.ai-tutor-page .card--soon {
  border-color: rgba(255, 176, 32, 0.45);
  background: linear-gradient(135deg, rgba(255, 176, 32, 0.14), rgba(18, 21, 30, 0.85));
  box-shadow: inset 4px 0 0 var(--c-soon);
}
.ai-tutor-page .card--thesis {
  border-color: rgba(61, 214, 198, 0.4);
  background: linear-gradient(135deg, rgba(61, 214, 198, 0.12), rgba(18, 21, 30, 0.85));
  box-shadow: inset 4px 0 0 var(--c-thesis);
}
.ai-tutor-page .card--soon > p,
.ai-tutor-page .card--thesis > p {
  margin: 0;
  line-height: 1.65;
}
.ai-tutor-page .card-kicker {
  margin: 0;
}
.ai-tutor-page .label-soon,
.ai-tutor-page .label-thesis {
  display: inline-block;
  margin: 0;
  padding: 0.2rem 0.6rem;
  border-radius: 6px;
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  line-height: 1.35;
  vertical-align: middle;
}
.ai-tutor-page .label-soon {
  background: rgba(255, 176, 32, 0.22);
  color: #ffd27a;
}
.ai-tutor-page .label-thesis {
  background: rgba(61, 214, 198, 0.2);
  color: #7aefe3;
}
.ai-tutor-page .hi-warn { color: #ffb4a2; }
.ai-tutor-page .hi-price { color: var(--c-price); }
.ai-tutor-page .hi-driver { color: #7aefe3; }
.ai-tutor-page .hi-source { color: #c4b5fd; }
.ai-tutor-page .hi-tutor {
  display: inline;
  color: #7aefe3;
  background: rgba(61, 214, 198, 0.16);
  padding: 0.08em 0.28em;
  border-radius: 4px;
  font-weight: 800;
  line-height: inherit;
  vertical-align: baseline;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}
.ai-tutor-page .hi-practice { color: var(--c-practice); }
.ai-tutor-page .source-list {
  margin: 0.85rem 0 1.25rem;
  padding: 0.85rem 1rem;
  border-radius: 12px;
  background: rgba(167, 139, 250, 0.1);
  border: 1px solid rgba(167, 139, 250, 0.35);
  box-shadow: inset 3px 0 0 var(--c-source);
  font-size: 0.9rem;
  color: #e4ddf7;
}
.ai-tutor-page .source-list strong {
  display: block;
  color: #c4b5fd;
  margin-bottom: 0.35rem;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}
.ai-tutor-page .source-list ul {
  margin: 0.25rem 0 0;
  padding-left: 1.15rem;
}
.ai-tutor-page .note-verify {
  margin: 0.75rem 0 1rem;
  padding: 0.7rem 0.9rem;
  border-radius: 10px;
  background: rgba(251, 191, 36, 0.1);
  border: 1px solid rgba(251, 191, 36, 0.35);
  color: #fde68a;
  font-size: 0.9rem;
}
.ai-tutor-page .tutor-a .cite-block {
  margin-top: 0.75rem;
  padding-top: 0.65rem;
  border-top: 1px dashed rgba(61, 214, 198, 0.35);
  font-size: 0.82rem;
  color: #b7c4d8;
}
.ai-tutor-page .cite-links {
  margin-top: 0.85rem;
  padding-top: 0.75rem;
  border-top: 1px dashed rgba(61, 214, 198, 0.35);
}
.ai-tutor-page .cite-links-label {
  margin: 0 0 0.55rem;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: #9fd4ff;
}
.ai-tutor-page .cite-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}
.ai-tutor-page .cite-chip-row--more {
  margin-top: 0.45rem;
}
.ai-tutor-page .cite-chip-row--more[hidden] {
  display: none !important;
}
.ai-tutor-page .cite-chip {
  display: inline-flex;
  align-items: center;
  max-width: 100%;
  padding: 0.38rem 0.7rem;
  border-radius: 999px;
  border: 1px solid rgba(110, 182, 255, 0.4);
  background: rgba(110, 182, 255, 0.12);
  color: #cfe6ff !important;
  font-size: 0.78rem;
  font-weight: 600;
  line-height: 1.3;
  text-decoration: none !important;
  overflow-wrap: anywhere;
  word-break: break-word;
}
.ai-tutor-page a.cite-chip:hover {
  background: rgba(110, 182, 255, 0.22);
  border-color: rgba(110, 182, 255, 0.65);
  color: #fff !important;
}
.ai-tutor-page .cite-chip--nolink {
  border-color: rgba(148, 163, 184, 0.4);
  background: rgba(148, 163, 184, 0.12);
  color: #cbd5e1 !important;
  cursor: default;
}
.ai-tutor-page .cite-chip--inline {
  margin: 0 0.15rem;
  vertical-align: baseline;
}
.ai-tutor-page .cite-toggle {
  margin-top: 0.55rem;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  border: 1px solid rgba(245, 184, 0, 0.4);
  background: rgba(245, 184, 0, 0.1);
  color: #ffe08a;
  font: inherit;
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
  min-height: 36px;
}
.ai-tutor-page .cite-toggle:hover {
  background: rgba(245, 184, 0, 0.18);
}
.ai-tutor-page .authenticity {
  margin: 0.5rem 0 1rem;
  padding: 0.65rem 0.85rem;
  border-radius: 10px;
  background: rgba(110, 182, 255, 0.1);
  border: 1px solid rgba(110, 182, 255, 0.3);
  color: #b9dcff;
  font-size: 0.88rem;
}

.ai-tutor-page h2.sec {
  margin-top: 2.4rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--line);
}
.ai-tutor-page h2.sec-summary { color: #ffe08a; }
.ai-tutor-page h2.sec-summary::before { background: var(--c-soon); }
.ai-tutor-page h2.sec-why { color: #9fd4ff; }
.ai-tutor-page h2.sec-why::before { background: var(--c-practice); }
.ai-tutor-page h2.sec-design { color: #d4bfff; }
.ai-tutor-page h2.sec-design::before { background: var(--c-source); }
.ai-tutor-page h2.sec-samples { color: #ffd45c; }
.ai-tutor-page h2.sec-samples::before { background: var(--amber); }

.ai-tutor-page .design-source { box-shadow: inset 3px 0 0 var(--c-source); }
.ai-tutor-page .design-source strong { color: #c4b5fd; }
.ai-tutor-page .design-slang { box-shadow: inset 3px 0 0 var(--c-slang); }
.ai-tutor-page .design-slang strong { color: var(--c-slang); }
.ai-tutor-page .design-split { box-shadow: inset 3px 0 0 var(--c-trap); }
.ai-tutor-page .design-split strong { color: #f0abfc; }
.ai-tutor-page .design-limit { box-shadow: inset 3px 0 0 var(--c-offline); }
.ai-tutor-page .design-limit strong { color: #cbd5e1; }

.ai-tutor-page .ask-examples {
  display: flex; flex-wrap: wrap; gap: 0.5rem;
  margin: 0.65rem 0 1rem;
  align-items: stretch;
}
.ai-tutor-page .ask-examples span {
  display: inline-flex;
  align-items: center;
  padding: 0.45rem 0.75rem;
  border-radius: 999px;
  font-size: 0.86rem;
  line-height: 1.35;
  max-width: 100%;
  font-weight: 650;
  background: rgba(110, 182, 255, 0.14);
  border: 1px solid rgba(110, 182, 255, 0.35);
  color: #b9dcff;
}

.ai-tutor-page .tutor-turn {
  border-left: 3px solid var(--amber);
}
.ai-tutor-page .tutor-turn:has(.tutor-tag[data-kind="parta"]) {
  border-left-color: var(--c-parta);
  background: linear-gradient(90deg, rgba(255, 107, 107, 0.08), rgba(18, 21, 30, 0.72) 28%);
}
.ai-tutor-page .tutor-turn:has(.tutor-tag[data-kind="partb"]) {
  border-left-color: var(--c-partb);
  background: linear-gradient(90deg, rgba(91, 159, 255, 0.1), rgba(18, 21, 30, 0.72) 28%);
}
.ai-tutor-page .tutor-turn:has(.tutor-tag[data-kind="trap"]) {
  border-left-color: var(--c-trap);
  background: linear-gradient(90deg, rgba(232, 121, 249, 0.1), rgba(18, 21, 30, 0.72) 28%);
}
.ai-tutor-page .tutor-turn:has(.tutor-tag[data-kind="ambig"]) {
  border-left-color: var(--c-ambig);
  background: linear-gradient(90deg, rgba(251, 191, 36, 0.1), rgba(18, 21, 30, 0.72) 28%);
}
.ai-tutor-page .tutor-turn:has(.tutor-tag[data-kind="slang"]) {
  border-left-color: var(--c-slang);
  background: linear-gradient(90deg, rgba(255, 159, 67, 0.1), rgba(18, 21, 30, 0.72) 28%);
}
.ai-tutor-page .tutor-turn:has(.tutor-tag[data-kind="rhv"]) {
  border-left-color: var(--c-rhv);
  background: linear-gradient(90deg, rgba(52, 211, 153, 0.1), rgba(18, 21, 30, 0.72) 28%);
}
.ai-tutor-page .tutor-tag {
  padding: 0.18rem 0.55rem;
  border-radius: 6px;
  background: rgba(245, 184, 0, 0.15);
}
.ai-tutor-page .tutor-tag[data-kind="parta"] { color: #ffb4b4; background: rgba(255, 107, 107, 0.18); }
.ai-tutor-page .tutor-tag[data-kind="partb"] { color: #b7d4ff; background: rgba(91, 159, 255, 0.18); }
.ai-tutor-page .tutor-tag[data-kind="trap"] { color: #f5c6ff; background: rgba(232, 121, 249, 0.18); }
.ai-tutor-page .tutor-tag[data-kind="ambig"] { color: #fde68a; background: rgba(251, 191, 36, 0.18); }
.ai-tutor-page .tutor-tag[data-kind="slang"] { color: #ffd0a8; background: rgba(255, 159, 67, 0.18); }
.ai-tutor-page .tutor-tag[data-kind="rhv"] { color: #a7f3d0; background: rgba(52, 211, 153, 0.18); }

.ai-tutor-page .tutor-q {
  background: rgba(245, 184, 0, 0.16);
  border-color: rgba(245, 184, 0, 0.4);
  color: #fff6d6;
}
.ai-tutor-page .tutor-a {
  background: rgba(61, 214, 198, 0.06);
  border-color: rgba(61, 214, 198, 0.28);
}
.ai-tutor-page .tutor-a::before { color: #7aefe3; }
.ai-tutor-page .tutor-a strong { color: #ffe08a; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

/* Ride-hail weighted guide (extends .feature-page) */
.rh-weighted-page .card--thesis {
  border-color: rgba(52, 211, 153, 0.42);
  background: linear-gradient(135deg, rgba(52, 211, 153, 0.12), rgba(18, 21, 30, 0.85));
  box-shadow: inset 4px 0 0 var(--c-rhv);
  padding: 1.05rem 1.15rem;
}
.rh-weighted-page .card--thesis > p { margin: 0; line-height: 1.65; }
.rh-weighted-page .label-thesis {
  display: inline-block;
  margin: 0;
  padding: 0.2rem 0.6rem;
  border-radius: 6px;
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  line-height: 1.35;
  background: rgba(52, 211, 153, 0.18);
  color: #6ee7b7;
}
.rh-weighted-page .hi-rhv { color: #6ee7b7; font-weight: 700; }
.rh-weighted-page .hi-same { color: #ffe08a; font-weight: 700; }
.rh-weighted-page h2.sec { margin-top: 2rem; }
.rh-weighted-page h2.sec-summary { color: #ffe08a; }
.rh-weighted-page h2.sec-summary::before { background: var(--c-rhv); }
.rh-weighted-page h2.sec-same { color: #9fd4ff; }
.rh-weighted-page h2.sec-same::before { background: #5b9fff; }
.rh-weighted-page h2.sec-change { color: #6ee7b7; }
.rh-weighted-page h2.sec-change::before { background: var(--c-rhv); }
.rh-weighted-page h2.sec-who { color: #d4bfff; }
.rh-weighted-page h2.sec-who::before { background: var(--c-source); }
.rh-weighted-page h2.sec-open { color: #ffd45c; }
.rh-weighted-page h2.sec-open::before { background: var(--amber); }