:root {
  --forest-950: #0a211b;
  --forest-900: #102f27;
  --forest-800: #173c32;
  --forest-700: #285345;
  --forest-500: #4e7764;
  --paper: #f4efe4;
  --paper-light: #fbf8f0;
  --ink: #1d2823;
  --muted: #69716c;
  --sun: #e9a94b;
  --sun-light: #f5d89b;
  --rust: #b45d3c;
  --line: rgba(29, 40, 35, 0.15);
  --shadow: 0 24px 70px rgba(12, 32, 26, 0.13);
  --serif: "Noto Serif TC", "PMingLiU", serif;
  --sans: "Noto Sans TC", "Microsoft JhengHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 1.5rem;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  content: "";
  opacity: 0.3;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.1'/%3E%3C/svg%3E");
}

a {
  color: inherit;
}

button,
input {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

:focus-visible {
  outline: 3px solid var(--sun);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 100;
  padding: 0.6rem 1rem;
  color: white;
  background: var(--forest-950);
  border-radius: 999px;
  transform: translateY(-200%);
}

.skip-link:focus {
  transform: translateY(0);
}

.hero {
  position: relative;
  min-height: 720px;
  overflow: hidden;
  color: var(--paper-light);
  background:
    radial-gradient(circle at 76% 32%, rgba(233, 169, 75, 0.16), transparent 25%),
    linear-gradient(145deg, var(--forest-950), var(--forest-800) 63%, #365f50);
}

.hero::before {
  position: absolute;
  top: 8rem;
  right: 8%;
  width: 26rem;
  height: 26rem;
  content: "";
  border: 1px solid rgba(244, 239, 228, 0.13);
  border-radius: 50%;
  box-shadow: 0 0 0 4rem rgba(244, 239, 228, 0.025), 0 0 0 8rem rgba(244, 239, 228, 0.018);
}

.topbar,
.hero-grid,
.status-strip,
.section,
.footer {
  width: min(1180px, calc(100% - 3rem));
  margin-inline: auto;
}

.topbar {
  position: relative;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 1.5rem;
  border-bottom: 1px solid rgba(244, 239, 228, 0.16);
}

.brand {
  display: inline-flex;
  gap: 0.7rem;
  align-items: center;
  font-family: var(--serif);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 2.2rem;
  height: 2.2rem;
  place-items: center;
  color: var(--forest-950);
  background: var(--sun-light);
  border-radius: 50% 50% 45% 55%;
  font-size: 0.8rem;
}

.nav-cta {
  padding: 0.55rem 1rem;
  border: 1px solid rgba(244, 239, 228, 0.36);
  border-radius: 999px;
  font-size: 0.86rem;
  text-decoration: none;
  transition: 180ms ease;
}

.nav-cta:hover {
  color: var(--forest-950);
  background: var(--paper-light);
}

.topbar-actions {
  display: flex;
  gap: 0.8rem;
  align-items: center;
}

.language-switch {
  display: inline-grid;
  grid-template-columns: repeat(2, 1fr);
  padding: 3px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(244, 239, 228, 0.2);
  border-radius: 999px;
}

.language-switch button {
  min-width: 3.4rem;
  padding: 0.35rem 0.7rem;
  color: rgba(251, 248, 240, 0.72);
  background: transparent;
  border: 0;
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 700;
  cursor: pointer;
}

.language-switch button[aria-pressed="true"] {
  color: var(--forest-950);
  background: var(--sun-light);
  box-shadow: 0 4px 12px rgba(7, 22, 18, 0.18);
}

.hero-grid {
  position: relative;
  z-index: 3;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.75fr);
  gap: 7vw;
  align-items: center;
  padding-block: 6rem 11rem;
}

.eyebrow,
.section-kicker {
  margin: 0 0 1rem;
  color: var(--sun-light);
  font-size: 0.76rem;
  font-weight: 900;
  letter-spacing: 0.2em;
}

.hero h1 {
  max-width: 760px;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(3rem, 7vw, 6.6rem);
  font-weight: 900;
  line-height: 1.13;
  letter-spacing: -0.055em;
}

.hero h1 em {
  color: var(--sun-light);
  font-style: normal;
}

.hero-lead {
  max-width: 620px;
  margin: 2rem 0 0;
  color: rgba(251, 248, 240, 0.76);
  font-size: 1.08rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 2.2rem;
}

.button {
  min-height: 3rem;
  padding: 0.72rem 1.25rem;
  border: 0;
  border-radius: 3px 15px 3px 15px;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
  transition: transform 180ms ease, background 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  color: var(--forest-950);
  background: var(--sun-light);
}

.button-quiet {
  color: var(--paper-light);
  background: rgba(255, 255, 255, 0.09);
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.trip-ticket {
  position: relative;
  padding: 2rem;
  color: var(--ink);
  background: var(--paper-light);
  border-radius: 4px;
  box-shadow: 18px 20px 0 rgba(7, 22, 18, 0.25);
  transform: rotate(2deg);
}

.trip-ticket::before,
.trip-ticket::after {
  position: absolute;
  top: 48%;
  width: 1.7rem;
  height: 1.7rem;
  content: "";
  background: var(--forest-800);
  border-radius: 50%;
}

.trip-ticket::before { left: -0.85rem; }
.trip-ticket::after { right: -0.85rem; }

.ticket-route {
  display: flex;
  gap: 0.8rem;
  align-items: center;
  font-family: var(--serif);
  font-size: 1.1rem;
  font-weight: 900;
}

.route-line {
  position: relative;
  flex: 1;
  height: 1px;
  background: var(--forest-500);
}

.route-line::before,
.route-line::after {
  position: absolute;
  top: -3px;
  width: 7px;
  height: 7px;
  content: "";
  background: var(--paper-light);
  border: 1px solid var(--forest-500);
  border-radius: 50%;
}

.route-line::before { left: 0; }
.route-line::after { right: 0; }

.ticket-date {
  margin: 1.7rem 0;
  color: var(--forest-800);
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 900;
  letter-spacing: -0.08em;
  line-height: 1;
}

.ticket-meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.7rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--line);
}

.ticket-meta div {
  display: flex;
  flex-direction: column;
}

.ticket-meta span {
  color: var(--muted);
  font-size: 0.7rem;
}

.ticket-meta strong {
  font-size: 0.82rem;
}

.ticket-stamp {
  position: absolute;
  right: 1.8rem;
  bottom: -2.4rem;
  display: grid;
  width: 5.7rem;
  height: 5.7rem;
  place-items: center;
  color: var(--rust);
  border: 2px solid var(--rust);
  border-radius: 50%;
  font-size: 0.56rem;
  font-weight: 900;
  line-height: 1.4;
  text-align: center;
  letter-spacing: 0.12em;
  opacity: 0.8;
  transform: rotate(-14deg);
}

.ridge {
  position: absolute;
  right: -5%;
  bottom: -7rem;
  left: -5%;
  height: 19rem;
  background: var(--forest-950);
  clip-path: polygon(0 66%, 10% 43%, 18% 58%, 31% 22%, 43% 55%, 54% 34%, 64% 58%, 78% 18%, 90% 49%, 100% 27%, 100% 100%, 0 100%);
}

.ridge-back {
  bottom: -3rem;
  background: rgba(78, 119, 100, 0.45);
  transform: scaleX(-1);
}

.status-strip {
  position: relative;
  z-index: 10;
  display: grid;
  grid-template-columns: 1.7fr 1fr 1fr;
  gap: 1rem;
  align-items: center;
  min-height: 5rem;
  margin-top: -2.5rem;
  padding: 1rem 1.4rem;
  background: var(--paper-light);
  border-left: 5px solid var(--sun);
  box-shadow: var(--shadow);
}

.status-strip div {
  display: flex;
  gap: 0.7rem;
  align-items: center;
}

.status-strip p {
  margin: 0;
  color: var(--muted);
  font-size: 0.82rem;
}

.status-dot {
  width: 0.65rem;
  height: 0.65rem;
  flex: 0 0 auto;
  background: var(--sun);
  border-radius: 50%;
  box-shadow: 0 0 0 5px rgba(233, 169, 75, 0.16);
}

.section {
  padding-block: 7rem;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  column-gap: 3rem;
  align-items: end;
  margin-bottom: 2.7rem;
}

.section-heading .section-kicker {
  grid-column: 1 / -1;
  color: var(--rust);
}

.section-heading h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(2.2rem, 5vw, 4.4rem);
  line-height: 1.12;
  letter-spacing: -0.045em;
}

.section-heading > p:last-child {
  margin: 0;
  color: var(--muted);
}

.changes-section {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 6vw;
  align-items: start;
}

.changes-section .section-heading {
  display: block;
  position: sticky;
  top: 2rem;
  margin: 0;
}

.changes-section .section-heading h2 {
  margin-bottom: 1.2rem;
}

.change-panel {
  padding: 0.4rem 2rem 1.6rem;
  background: var(--paper-light);
  border-top: 4px solid var(--forest-700);
  box-shadow: 0 14px 50px rgba(16, 47, 39, 0.08);
}

.change-list {
  padding: 0;
  margin: 0;
  list-style: none;
}

.change-list li {
  display: grid;
  grid-template-columns: 4.2rem 1fr;
  gap: 1rem;
  padding: 1.35rem 0;
  border-bottom: 1px solid var(--line);
}

.change-list time {
  color: var(--rust);
  font-size: 0.73rem;
  font-weight: 900;
  letter-spacing: 0.12em;
}

.change-list p {
  margin: 0;
}

.text-button {
  margin-top: 1.4rem;
  padding: 0;
  color: var(--forest-700);
  background: transparent;
  border: 0;
  border-bottom: 1px solid currentColor;
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
}

.schedule-section {
  padding-top: 2rem;
}

.day-list {
  display: grid;
  gap: 1rem;
}

.day-card {
  overflow: hidden;
  background: var(--paper-light);
  border: 1px solid var(--line);
  border-radius: 2px;
  box-shadow: 0 12px 36px rgba(16, 47, 39, 0.05);
}

.day-card::before {
  display: block;
  height: 5px;
  content: "";
  background: var(--forest-700);
}

.day-sunrise::before { background: var(--sun); }
.day-city::before { background: var(--rust); }

.day-summary {
  display: grid;
  grid-template-columns: 6.5rem 1fr 3rem;
  gap: 1rem;
  align-items: center;
  width: 100%;
  padding: 1.7rem 2rem;
  color: inherit;
  text-align: left;
  background: transparent;
  border: 0;
  cursor: pointer;
}

.day-number {
  align-self: start;
  color: var(--rust);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.14em;
}

.day-title-wrap {
  display: flex;
  min-width: 0;
  flex-direction: column;
}

.day-date {
  color: var(--muted);
  font-size: 0.76rem;
}

.day-title-wrap strong {
  margin: 0.2rem 0;
  font-family: var(--serif);
  font-size: clamp(1.25rem, 3vw, 2rem);
}

.day-title-wrap > span:last-child {
  color: var(--muted);
  font-size: 0.85rem;
}

.day-toggle {
  display: grid;
  width: 2.5rem;
  height: 2.5rem;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  transition: transform 200ms ease, background 200ms ease;
}

.day-summary[aria-expanded="true"] .day-toggle {
  color: white;
  background: var(--forest-800);
  transform: rotate(45deg);
}

.day-content {
  padding: 0 2rem 2rem 9.5rem;
}

.timeline {
  padding: 0;
  margin: 0;
  list-style: none;
}

.timeline li {
  position: relative;
  display: grid;
  grid-template-columns: 7rem 1fr auto;
  gap: 1.3rem;
  padding: 1.25rem 0;
  border-top: 1px solid var(--line);
}

.timeline li::before {
  position: absolute;
  top: 1.75rem;
  left: -1.4rem;
  width: 0.48rem;
  height: 0.48rem;
  content: "";
  background: var(--sun);
  border-radius: 50%;
}

.timeline time {
  color: var(--forest-700);
  font-size: 0.8rem;
  font-weight: 900;
}

.timeline strong {
  font-size: 0.95rem;
}

.timeline p {
  margin: 0.22rem 0 0;
  color: var(--muted);
  font-size: 0.82rem;
}

.item-status {
  align-self: start;
  padding: 0.25rem 0.55rem;
  border-radius: 999px;
  font-size: 0.68rem;
  font-weight: 700;
  white-space: nowrap;
}

.status-pending { color: #7b321f; background: #f7ded4; }
.status-flex { color: #735511; background: #faedc6; }
.status-plan { color: #1d5a48; background: #dcebe4; }

.day-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.day-links a {
  display: inline-flex;
  gap: 0.5rem;
  align-items: center;
  padding: 0.55rem 0.8rem;
  color: var(--forest-700);
  background: #eaf0e9;
  border-radius: 3px;
  font-size: 0.78rem;
  font-weight: 700;
  text-decoration: none;
}

.todo-section {
  position: relative;
  width: 100%;
  max-width: none;
  padding-inline: max(1.5rem, calc((100% - 1180px) / 2));
  color: var(--paper-light);
  background: var(--forest-900);
}

.todo-section::before {
  position: absolute;
  inset: 0;
  content: "";
  opacity: 0.2;
  background: repeating-linear-gradient(117deg, transparent 0 60px, rgba(255,255,255,0.08) 61px 62px);
}

.todo-section > * {
  position: relative;
}

.section-heading-light .section-kicker { color: var(--sun-light); }
.section-heading-light > p:last-child { color: rgba(251, 248, 240, 0.62); }

.todo-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.8rem;
}

.todo-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  align-items: center;
  min-height: 5.5rem;
  padding: 1.1rem 1.2rem;
  background: rgba(255, 255, 255, 0.065);
  border: 1px solid rgba(255, 255, 255, 0.12);
  cursor: pointer;
  transition: background 180ms ease, transform 180ms ease;
}

.todo-item:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

.todo-item input {
  position: absolute;
  opacity: 0;
}

.custom-check {
  display: grid;
  width: 1.6rem;
  height: 1.6rem;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.45);
  border-radius: 50%;
}

.todo-item input:checked + .custom-check {
  color: var(--forest-950);
  background: var(--sun-light);
  border-color: var(--sun-light);
}

.todo-item input:checked + .custom-check::after {
  content: "✓";
  font-size: 0.76rem;
  font-weight: 900;
}

.todo-item input:checked ~ span:last-child {
  text-decoration: line-through;
  opacity: 0.55;
}

.todo-item small {
  display: block;
  color: var(--sun-light);
  font-size: 0.64rem;
  font-weight: 900;
  letter-spacing: 0.12em;
}

.source-details {
  overflow: hidden;
  background: var(--paper-light);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.source-details summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 1.8rem;
  color: var(--paper-light);
  background: var(--forest-800);
  cursor: pointer;
  list-style: none;
}

.source-details summary::-webkit-details-marker { display: none; }
.source-details summary > span:first-child { font-family: var(--serif); font-size: 1.1rem; font-weight: 700; }
.summary-hint { color: rgba(251, 248, 240, 0.64); font-size: 0.75rem; }

.source-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  padding: 1rem 1.5rem;
  background: #e8e3d8;
  border-bottom: 1px solid var(--line);
}

.source-toolbar a {
  color: var(--forest-700);
  font-size: 0.76rem;
  font-weight: 700;
}

.markdown-body {
  max-width: 900px;
  padding: clamp(1.3rem, 4vw, 3.5rem);
  margin-inline: auto;
  overflow-wrap: anywhere;
}

.markdown-body h2,
.markdown-body h3,
.markdown-body h4,
.markdown-body h5 {
  margin: 2.2em 0 0.7em;
  color: var(--forest-900);
  font-family: var(--serif);
  line-height: 1.3;
}

.markdown-body h2 { font-size: 2rem; }
.markdown-body h3 { padding-bottom: 0.5rem; border-bottom: 1px solid var(--line); font-size: 1.55rem; }
.markdown-body h4 { font-size: 1.2rem; }
.markdown-body p,
.markdown-body li { font-size: 0.93rem; }
.markdown-body a { color: #176d59; text-underline-offset: 3px; }
.markdown-body blockquote { margin: 1.2rem 0; padding: 0.8rem 1.2rem; color: var(--forest-700); background: #edf1e9; border-left: 4px solid var(--sun); }
.markdown-body blockquote + blockquote { margin-top: -1.2rem; }
.markdown-body hr { margin: 2.5rem 0; border: 0; border-top: 1px solid var(--line); }
.markdown-body code { padding: 0.1rem 0.35rem; background: #e7e1d5; border-radius: 3px; }
.markdown-body .md-check { list-style: none; margin-left: -1.5rem; }
.markdown-body .md-check span { display: inline-grid; width: 1.3rem; height: 1.3rem; margin-right: 0.5rem; place-items: center; color: var(--forest-700); border: 1px solid var(--forest-500); border-radius: 50%; font-size: 0.7rem; }

.table-scroll {
  margin: 1.2rem 0;
  overflow-x: auto;
  border: 1px solid var(--line);
}

.markdown-body table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  background: white;
}

.markdown-body th,
.markdown-body td {
  padding: 0.7rem 0.85rem;
  border-bottom: 1px solid var(--line);
  font-size: 0.8rem;
  text-align: left;
  vertical-align: top;
}

.markdown-body th {
  color: white;
  background: var(--forest-700);
}

.loading-message,
.error-message {
  color: var(--muted);
  text-align: center;
}

.footer {
  display: flex;
  justify-content: space-between;
  padding-block: 2.5rem 6rem;
  color: var(--muted);
  border-top: 1px solid var(--line);
  font-family: var(--serif);
}

.footer p { margin: 0; }
.footer-credit { font-family: var(--sans); font-size: 0.72rem; }

.mobile-nav {
  display: none;
}

.toast {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 100;
  padding: 0.75rem 1rem;
  color: white;
  background: var(--forest-950);
  border-radius: 4px;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transform: translateY(1rem);
  transition: 200ms ease;
}

.toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 650ms ease, transform 650ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.hero .reveal {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  .reveal { opacity: 1; transform: none; }
}

@media (max-width: 820px) {
  .hero { min-height: auto; }
  .hero-grid { grid-template-columns: 1fr; gap: 3rem; padding-block: 4rem 10rem; }
  .hero h1 { font-size: clamp(3rem, 12vw, 5rem); }
  .trip-ticket { width: min(100%, 430px); transform: rotate(1deg); }
  .status-strip { grid-template-columns: 1fr 1fr; }
  .status-strip > div { grid-column: 1 / -1; }
  .changes-section { grid-template-columns: 1fr; }
  .changes-section .section-heading { position: static; }
  .section-heading { grid-template-columns: 1fr; gap: 1rem; }
  .day-content { padding-left: 2rem; }
  .todo-grid { grid-template-columns: 1fr; }
}

@media (max-width: 580px) {
  html { scroll-padding-top: 0.5rem; }
  body { padding-bottom: 4.8rem; }
  .topbar, .hero-grid, .status-strip, .section, .footer { width: min(100% - 2rem, 1180px); }
  .topbar { padding-block: 1rem; }
  .nav-cta { display: none; }
  .hero-grid { padding-block: 3.4rem 9rem; }
  .hero::before { top: 9rem; right: -12rem; width: 24rem; height: 24rem; }
  .eyebrow { font-size: 0.67rem; }
  .hero h1 { font-size: clamp(2rem, 10vw, 3rem); }
  .hero-lead { font-size: 0.95rem; }
  .hero-actions { display: grid; grid-template-columns: 1fr 1fr; }
  .button { display: grid; place-items: center; padding-inline: 0.8rem; }
  .trip-ticket { padding: 1.4rem; box-shadow: 10px 12px 0 rgba(7, 22, 18, 0.25); }
  .ticket-date { font-size: 2.7rem; }
  .ticket-stamp { right: 1rem; bottom: -2.3rem; width: 5rem; height: 5rem; }
  .status-strip { grid-template-columns: 1fr; gap: 0.4rem; margin-top: -1.5rem; padding: 1rem; }
  .status-strip > div { grid-column: auto; }
  .section { padding-block: 4.8rem; }
  .section-heading { margin-bottom: 1.8rem; }
  .section-heading h2 { font-size: 2.5rem; }
  .change-panel { padding-inline: 1.2rem; }
  .change-list li { grid-template-columns: 3.3rem 1fr; gap: 0.7rem; }
  .day-summary { grid-template-columns: 1fr 2.5rem; padding: 1.25rem; }
  .day-number { grid-column: 1 / -1; }
  .day-title-wrap { grid-column: 1; }
  .day-toggle { grid-column: 2; grid-row: 2; }
  .day-content { padding: 0 1.25rem 1.25rem; }
  .timeline li { grid-template-columns: 1fr auto; gap: 0.5rem 0.7rem; padding: 1rem 0; }
  .timeline li::before { display: none; }
  .timeline time { grid-column: 1 / -1; }
  .timeline div { grid-column: 1; }
  .timeline .item-status { grid-column: 2; }
  .todo-section { width: 100%; padding-inline: 1rem; }
  .todo-item { min-height: 5rem; padding: 0.9rem; }
  .source-details summary { align-items: flex-start; flex-direction: column; gap: 0.2rem; padding: 1.2rem; }
  .markdown-body { padding: 1.15rem; }
  .markdown-body h2 { font-size: 1.65rem; }
  .markdown-body h3 { font-size: 1.35rem; }
  .footer { flex-direction: column; gap: 0.5rem; padding-bottom: 2rem; }
  .mobile-nav {
    position: fixed;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 90;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    padding: 0.55rem max(0.5rem, env(safe-area-inset-right)) calc(0.45rem + env(safe-area-inset-bottom)) max(0.5rem, env(safe-area-inset-left));
    color: var(--paper-light);
    background: rgba(10, 33, 27, 0.96);
    border-top: 1px solid rgba(255,255,255,0.14);
    backdrop-filter: blur(16px);
  }
  .mobile-nav a { display: flex; flex-direction: column; gap: 0.12rem; align-items: center; font-size: 0.63rem; text-decoration: none; }
  .mobile-nav b { font-weight: 500; }
  .mobile-nav span { display: grid; width: 1.65rem; height: 1.65rem; place-items: center; color: var(--forest-950); background: var(--sun-light); border-radius: 50%; font-family: var(--serif); font-size: 0.7rem; font-weight: 900; }
  .toast { right: 1rem; bottom: 5.3rem; left: 1rem; text-align: center; }
}