:root {
  --ink: #20312b;
  --ink-soft: #55625c;
  --paper: #f5f1e9;
  --paper-deep: #ece6da;
  --surface: #fffdf8;
  --line: #ded8cc;
  --moss: #2c6550;
  --moss-deep: #20483a;
  --moss-soft: #d9e6dc;
  --vermilion: #a84f36;
  --vermilion-soft: #f4ddd3;
  --sun: #d3a64f;
  --white: #ffffff;
  --radius-control: 8px;
  --radius-panel: 12px;
  --shadow: 0 18px 44px rgba(34, 47, 40, 0.07);
  --max-width: 1280px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Avenir Next", "Hiragino Sans", "Yu Gothic", "Noto Sans", ui-sans-serif, sans-serif;
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

button, a, input, textarea { font: inherit; }
button { cursor: pointer; }
a { color: inherit; }

.app-shell { min-height: 100vh; }

.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 5;
  display: flex;
  width: 274px;
  flex-direction: column;
  gap: 28px;
  overflow-y: auto;
  padding: 30px 22px 24px;
  background: var(--moss-deep);
  color: #f5f4ed;
}

.brand-lockup { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid rgba(245, 244, 237, 0.26);
  border-radius: 10px;
  color: #f7e2bc;
  font-family: "Hiragino Mincho ProN", "Yu Mincho", serif;
  font-size: 22px;
}
.brand-kicker { margin: 0 0 2px; color: #d7b478; font-size: 12px; letter-spacing: .1em; }
.brand-name { margin: 0; color: #fffdf8; font-size: 11px; letter-spacing: .14em; }
.side-intro { padding: 2px 4px 0; color: #c5d2c8; font-size: 13px; }
.side-intro p { margin: 0; }
.side-intro .eyebrow { margin-bottom: 8px; color: #d7b478; font-size: 10px; font-weight: 500; letter-spacing: .16em; text-transform: uppercase; }

.view-nav { display: grid; gap: 5px; }
.view-button {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  border: 0;
  border-radius: var(--radius-control);
  padding: 10px 11px;
  min-height: 44px;
  background: transparent;
  color: #b8c8be;
  text-align: left;
  transition: transform 140ms cubic-bezier(.16, 1, .3, 1), background-color 160ms ease-out, color 160ms ease-out;
}
.view-button:hover, .view-button:focus-visible { background: rgba(255,255,255,.08); color: #fffdf8; }
.view-button:active { transform: scale(.97); }
.view-button.is-active { background: rgba(255,255,255,.12); color: #fffdf8; }
.view-icon { width: 18px; color: #d7b478; font-size: 18px; line-height: 1; }

.side-progress { border-top: 1px solid rgba(255,255,255,.16); border-bottom: 1px solid rgba(255,255,255,.16); padding: 19px 4px 20px; }
.side-progress-head { display: flex; align-items: baseline; justify-content: space-between; font-size: 12px; color: #c5d2c8; }
.side-progress-head strong { color: #f7e2bc; font-size: 14px; font-weight: 500; }
.side-progress .progress-track { margin: 11px 0 8px; background: rgba(255,255,255,.14); }
.side-progress .progress-track span { background: #d7b478; }
.side-progress-detail { margin: 0; color: #98aea0; font-size: 11px; }

.progress-track { height: 5px; overflow: hidden; border-radius: 5px; background: var(--paper-deep); }
.progress-track span { display: block; width: 100%; height: 100%; border-radius: 5px; background: var(--moss); transform: scaleX(var(--progress, 0)); transform-origin: left center; transition: transform 220ms cubic-bezier(.16, 1, .3, 1); }

.week-nav { display: grid; gap: 3px; }
.week-link {
  display: grid;
  grid-template-columns: 25px 1fr auto;
  align-items: center;
  gap: 8px;
  width: 100%;
  border: 0;
  border-radius: var(--radius-control);
  padding: 7px 8px;
  min-height: 44px;
  background: transparent;
  color: #9fb2a5;
  text-align: left;
  transition: transform 140ms cubic-bezier(.16, 1, .3, 1), background-color 160ms ease-out, color 160ms ease-out;
}
.week-link:hover, .week-link:focus-visible { background: rgba(255,255,255,.07); color: #fffdf8; }
.week-link:active { transform: scale(.97); }
.week-link.is-active { background: rgba(255,255,255,.12); color: #fffdf8; }
.week-number { color: #d7b478; font-size: 11px; }
.week-link-title { overflow: hidden; font-size: 12px; text-overflow: ellipsis; white-space: nowrap; }
.week-link-status { color: #80998a; font-size: 12px; }
.week-link.is-done .week-link-status { color: #e2ca8f; }

.sidebar-foot { margin-top: auto; padding: 8px 4px 0; color: #a8b8ac; font-size: 11px; }
.sidebar-foot p { margin: 0 0 3px; }
.sidebar-foot span { color: #d7b478; font-family: "Hiragino Mincho ProN", "Yu Mincho", serif; }

.main-content { min-width: 0; margin-left: 274px; padding: 0 48px 52px; }
.topbar { display: flex; max-width: var(--max-width); align-items: center; justify-content: space-between; gap: 20px; margin: 0 auto; border-bottom: 1px solid var(--line); padding: 22px 0 17px; color: var(--ink-soft); font-size: 12px; }
.topbar-crumb span { margin: 0 5px; color: #b2aa9b; }
.topbar-actions { display: flex; align-items: center; gap: 16px; }
.save-status { color: #78837c; font-size: 11px; }
.text-button { min-height: 44px; border: 0; background: transparent; color: var(--ink-soft); font-size: 12px; text-decoration: underline; text-decoration-color: #c9c0b2; text-underline-offset: 3px; transition: transform 140ms cubic-bezier(.16, 1, .3, 1), color 160ms ease-out; }
.text-button:hover, .text-button:focus-visible { color: var(--vermilion); }
.text-button:active { transform: scale(.97); }

.page-intro { max-width: var(--max-width); margin: 0 auto; padding: 62px 0 34px; }
.page-intro-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(260px, .37fr); align-items: end; gap: 64px; }
.eyebrow { margin: 0; color: var(--vermilion); font-size: 11px; font-weight: 500; letter-spacing: .15em; text-transform: uppercase; }
h1, h2, h3, p { overflow-wrap: break-word; }
h1, h2, h3 { margin: 0; font-weight: 500; letter-spacing: -.025em; }
h1 { max-width: 780px; margin-top: 12px; font-size: clamp(44px, 6vw, 84px); line-height: .98; }
h1 em { color: var(--moss); font-family: "Hiragino Mincho ProN", "Yu Mincho", serif; font-style: normal; }
.intro-copy { max-width: 475px; margin: 20px 0 0; color: var(--ink-soft); font-size: 17px; }
.intro-note { border-left: 1px solid var(--sun); padding: 0 0 2px 17px; color: var(--ink-soft); font-size: 13px; }
.intro-note strong { display: block; margin-bottom: 5px; color: var(--ink); font-size: 13px; font-weight: 500; }
.intro-note p { margin: 0; }

.content-wrap { max-width: var(--max-width); margin: 0 auto; }
.overview-grid { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(250px, .55fr); gap: 18px; }
.panel { border: 1px solid var(--line); border-radius: var(--radius-panel); background: var(--surface); box-shadow: var(--shadow); }
.panel-pad { padding: 24px; }
.panel-kicker { margin: 0 0 8px; color: var(--vermilion); font-size: 10px; font-weight: 500; letter-spacing: .13em; text-transform: uppercase; }
.panel h2 { font-size: 25px; line-height: 1.12; }
.panel h3 { font-size: 17px; line-height: 1.2; }
.muted { color: var(--ink-soft); }

.today-panel { position: relative; overflow: hidden; min-height: 262px; background: var(--moss-deep); color: #fffdf8; }
.today-panel::after { position: absolute; right: 24px; bottom: -34px; color: rgba(255,255,255,.08); content: "今日"; font-family: "Hiragino Mincho ProN", "Yu Mincho", serif; font-size: 132px; line-height: 1; pointer-events: none; }
.today-panel .panel-kicker { color: #e5bf7d; }
.today-panel h2 { position: relative; z-index: 1; max-width: 620px; font-size: clamp(26px, 3vw, 36px); }
.today-panel .muted { position: relative; z-index: 1; max-width: 610px; margin: 13px 0 0; color: #c3d2c7; }
.today-meta { position: relative; z-index: 1; display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.meta-chip { border: 1px solid rgba(255,255,255,.17); border-radius: var(--radius-control); padding: 5px 8px; color: #d8e3dc; font-size: 11px; }
.today-actions { position: relative; z-index: 1; display: flex; align-items: center; gap: 14px; margin-top: 25px; }
.primary-button, .secondary-button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; border: 1px solid transparent; border-radius: var(--radius-control); padding: 9px 14px; text-decoration: none; font-size: 13px; font-weight: 500; transition: transform 140ms cubic-bezier(.16, 1, .3, 1), background-color 160ms ease-out, border-color 160ms ease-out; }
.primary-button:hover, .primary-button:focus-visible, .secondary-button:hover, .secondary-button:focus-visible { transform: translateY(-1px); }
.primary-button:active, .secondary-button:active { transform: scale(.97); }
.primary-button { background: #f2d49c; color: var(--moss-deep); }
.primary-button:hover, .primary-button:focus-visible { background: #f7e0b6; }
.secondary-button { border-color: var(--line); background: transparent; color: var(--ink); }
.secondary-button:hover, .secondary-button:focus-visible { border-color: var(--moss); color: var(--moss); }
.today-panel .secondary-button { border-color: rgba(255,255,255,.25); color: #f5f4ed; }
.today-panel .secondary-button:hover, .today-panel .secondary-button:focus-visible { border-color: #f2d49c; color: #f2d49c; }
.quiet-action { border: 0; background: transparent; color: #bfd0c4; font-size: 12px; text-decoration: underline; text-decoration-color: rgba(255,255,255,.26); text-underline-offset: 4px; }

.progress-panel { display: flex; min-height: 262px; flex-direction: column; justify-content: space-between; }
.progress-ring-row { display: flex; align-items: center; gap: 18px; margin-top: 23px; }
.progress-ring { display: grid; width: 86px; height: 86px; flex: 0 0 86px; place-items: center; border-radius: 50%; background: conic-gradient(var(--moss) 0deg, var(--paper-deep) 0deg); }
.progress-ring::before { width: 68px; height: 68px; border-radius: 50%; background: var(--surface); content: ""; grid-area: 1 / 1; }
.progress-ring strong { z-index: 1; grid-area: 1 / 1; font-size: 18px; font-weight: 500; }
.progress-copy { margin: 0; color: var(--ink-soft); font-size: 12px; }
.progress-copy strong { display: block; margin-bottom: 3px; color: var(--ink); font-size: 14px; font-weight: 500; }
.progress-panel .progress-track { margin-top: 25px; }
.progress-panel-foot { display: flex; justify-content: space-between; gap: 12px; margin-top: 11px; color: var(--ink-soft); font-size: 11px; }

.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin: 54px 0 16px; }
.section-heading h2 { font-size: 28px; }
.section-heading p { max-width: 390px; margin: 0; color: var(--ink-soft); font-size: 13px; }
.course-architecture { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.architecture-step { min-height: 122px; padding: 17px 17px 17px 0; }
.architecture-step + .architecture-step { border-left: 1px solid var(--line); padding-left: 17px; }
.architecture-step span { display: block; margin-bottom: 15px; color: var(--vermilion); font-family: "Hiragino Mincho ProN", "Yu Mincho", serif; font-size: 18px; }
.architecture-step strong { display: block; margin-bottom: 4px; font-size: 13px; font-weight: 500; }
.architecture-step p { margin: 0; color: var(--ink-soft); font-size: 12px; }

.week-page-head { display: flex; align-items: end; justify-content: space-between; gap: 28px; margin-bottom: 23px; }
.week-page-head h2 { max-width: 720px; margin-top: 8px; font-size: clamp(30px, 4vw, 50px); line-height: 1; }
.week-page-head h2 span { display: inline-block; margin-left: 8px; color: var(--moss); font-family: "Hiragino Mincho ProN", "Yu Mincho", serif; font-size: .65em; }
.week-summary { max-width: 300px; color: var(--ink-soft); font-size: 13px; }
.week-summary p { margin: 0; }
.week-summary strong { display: block; margin-bottom: 6px; color: var(--ink); font-weight: 500; }
.week-meta-row { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 14px; }
.week-meta { border: 1px solid var(--line); border-radius: var(--radius-control); padding: 5px 8px; color: var(--ink-soft); font-size: 11px; }
.week-meta strong { color: var(--moss); font-weight: 500; }

.can-do { display: grid; grid-template-columns: minmax(0, .75fr) minmax(0, 1.25fr); gap: 20px; border: 1px solid #c8d8cb; border-radius: var(--radius-panel); background: #edf4ed; padding: 20px 22px; }
.can-do-label { color: var(--moss); font-size: 10px; font-weight: 500; letter-spacing: .13em; text-transform: uppercase; }
.can-do h3 { margin-top: 8px; color: var(--moss-deep); }
.can-do p { margin: 0; color: #4f6659; font-size: 14px; }
.can-do .jp-line { display: block; margin-top: 8px; color: var(--moss); font-family: "Hiragino Mincho ProN", "Yu Mincho", serif; font-size: 15px; }

.task-list { display: grid; gap: 10px; }
.task-card { display: grid; grid-template-columns: 44px minmax(0, 1fr) auto; align-items: start; gap: 14px; border: 1px solid var(--line); border-radius: var(--radius-panel); padding: 17px 18px; background: var(--surface); transition: border-color 160ms ease-out, background-color 160ms ease-out; }
.task-card:hover { border-color: #bbc7bd; }
.task-card.is-complete { background: #f6f8f3; }
.task-card.is-complete .task-title { color: #66736a; text-decoration: line-through; text-decoration-color: #a9b8aa; }
.task-card.is-complete .task-description { color: var(--ink-soft); }
.task-check { position: relative; display: grid; width: 44px; height: 44px; margin-top: -10px; place-items: center; }
.task-check input { position: absolute; inset: 0; width: 100%; height: 100%; cursor: pointer; opacity: 0; }
.check-visual { display: grid; width: 24px; height: 24px; place-items: center; border: 1px solid #b9c2b9; border-radius: 6px; color: transparent; font-size: 14px; pointer-events: none; transition: transform 140ms cubic-bezier(.16, 1, .3, 1), background-color 160ms ease-out, border-color 160ms ease-out, color 160ms ease-out; }
.task-check input:focus-visible + .check-visual { outline: 3px solid rgba(188,95,67,.24); outline-offset: 2px; }
.task-check input:checked + .check-visual { border-color: var(--moss); background: var(--moss); color: #fff; }
.task-check:active .check-visual { transform: scale(.96); }
.task-day { margin-bottom: 4px; color: var(--vermilion); font-size: 10px; font-weight: 500; letter-spacing: .12em; text-transform: uppercase; }
.task-title { margin: 0; color: var(--ink); font-size: 16px; font-weight: 500; line-height: 1.24; }
.task-description { max-width: 680px; margin: 6px 0 0; color: var(--ink-soft); font-size: 13px; }
.task-prompt { margin: 10px 0 0; border-left: 1px solid var(--sun); padding-left: 10px; color: #6c685a; font-size: 12px; }
.task-prompt strong { color: var(--ink); font-weight: 500; }
.task-side { display: flex; flex-direction: column; align-items: end; gap: 8px; }
.resource-type { border-radius: var(--radius-control); padding: 4px 7px; background: var(--paper-deep); color: var(--ink-soft); font-size: 10px; font-weight: 500; letter-spacing: .03em; white-space: nowrap; }
.resource-type.video { background: var(--vermilion-soft); color: #904531; }
.resource-type.podcast { background: #e6e0f0; color: #5d4b79; }
.resource-type.reading { background: #e3ebd9; color: #4f6b36; }
.resource-type.practice { background: #f0e6cb; color: #755719; }
.resource-type.speak { background: var(--moss-soft); color: var(--moss-deep); }
.resource-link { display: inline-flex; min-height: 44px; align-items: center; color: var(--moss); font-size: 11px; text-decoration: underline; text-decoration-color: #a8bfae; text-underline-offset: 3px; white-space: nowrap; transition: transform 140ms cubic-bezier(.16, 1, .3, 1), color 160ms ease-out; }
.resource-link:hover, .resource-link:focus-visible { color: var(--vermilion); }
.resource-link:active { transform: scale(.97); }

.week-tools { display: grid; grid-template-columns: minmax(0, 1fr) minmax(260px, .44fr); gap: 18px; margin-top: 19px; }
.reflection-panel, .mission-panel { padding: 20px; }
.reflection-panel { background: var(--surface); }
.reflection-panel h3, .mission-panel h3 { font-size: 18px; }
.reflection-panel p, .mission-panel p { margin: 6px 0 0; color: var(--ink-soft); font-size: 12px; }
.reflection-input { display: block; width: 100%; min-height: 100px; resize: vertical; margin-top: 13px; border: 1px solid var(--line); border-radius: var(--radius-control); background: #fffefa; padding: 11px; color: var(--ink); outline: 0; font-size: 16px; line-height: 1.5; }
.reflection-input:focus { border-color: var(--moss); box-shadow: 0 0 0 3px rgba(44,101,80,.11); }
.mission-panel { border-color: #ead4c8; background: #fbf0e9; }
.mission-panel h3 { color: #7e422f; }
.mission-panel p { color: #795f55; }
.mission-label { display: inline-block; margin-bottom: 12px; color: var(--vermilion); font-size: 10px; font-weight: 500; letter-spacing: .12em; text-transform: uppercase; }

.shelf-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.shelf-card { display: flex; min-height: 186px; flex-direction: column; justify-content: space-between; gap: 20px; border: 1px solid var(--line); border-radius: var(--radius-panel); padding: 20px; background: var(--surface); }
.shelf-card h3 { margin: 7px 0 0; font-size: 19px; }
.shelf-card p { margin: 8px 0 0; color: var(--ink-soft); font-size: 13px; }
.shelf-card .resource-link { display: inline-block; margin-top: 14px; }
.shelf-card-top { display: flex; justify-content: space-between; gap: 10px; }
.shelf-card .resource-type { align-self: start; }
.source-note { margin: 34px 0 0; border-top: 1px solid var(--line); padding-top: 16px; color: var(--ink-soft); font-size: 12px; }
.source-note a { color: var(--moss); text-decoration-color: #a8bfae; text-underline-offset: 3px; }

.empty-state { border: 1px dashed #c7c1b6; border-radius: var(--radius-panel); padding: 28px; color: var(--ink-soft); text-align: center; }
.empty-state strong { display: block; margin-bottom: 5px; color: var(--ink); font-weight: 500; }

.site-footer { display: flex; max-width: var(--max-width); justify-content: space-between; gap: 18px; margin: 62px auto 0; border-top: 1px solid var(--line); padding-top: 16px; color: #5e6a62; font-size: 11px; }
.site-footer p { margin: 0; }
.site-footer span { color: var(--vermilion); }

:focus-visible { outline: 3px solid rgba(188,95,67,.32); outline-offset: 3px; }

@media (max-width: 1050px) {
  .main-content { padding-right: 28px; padding-left: 28px; }
  .page-intro-grid { gap: 34px; }
  .overview-grid { grid-template-columns: 1fr; }
  .progress-panel { min-height: unset; }
  .shelf-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 760px) {
  .sidebar { position: static; width: auto; min-height: unset; gap: 19px; padding: 18px 18px 17px; }
  .side-intro, .sidebar-foot { display: none; }
  .view-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .side-progress { padding: 14px 4px 15px; }
  .week-nav { display: flex; gap: 5px; overflow-x: auto; padding-bottom: 2px; }
  .week-link { min-width: 133px; grid-template-columns: 23px 1fr auto; padding: 8px; }
  .sidebar { padding-inline-start: max(18px, env(safe-area-inset-left)); padding-inline-end: max(18px, env(safe-area-inset-right)); }
  .main-content { margin-left: 0; padding: 0 max(17px, env(safe-area-inset-right)) 35px max(17px, env(safe-area-inset-left)); }
  body { font-size: 16px; }
  .topbar { align-items: start; flex-direction: column; gap: 9px; padding: 15px 0 13px; }
  .topbar-actions { width: 100%; justify-content: space-between; }
  .page-intro { padding: 39px 0 27px; }
  .page-intro-grid { display: block; }
  h1 { font-size: clamp(46px, 15vw, 72px); }
  .intro-copy { font-size: 15px; }
  .intro-note { margin-top: 27px; }
  .panel-pad { padding: 18px; }
  .today-panel { min-height: 315px; }
  .today-panel::after { right: 13px; bottom: -15px; font-size: 90px; }
  .today-actions { align-items: flex-start; flex-direction: column; gap: 13px; }
  .section-heading { align-items: start; flex-direction: column; gap: 7px; margin-top: 40px; }
  .section-heading h2 { font-size: 25px; }
  .course-architecture { display: block; }
  .architecture-step { min-height: unset; padding: 15px 0; }
  .architecture-step + .architecture-step { border-top: 1px solid var(--line); border-left: 0; padding-left: 0; }
  .architecture-step span { display: inline; margin-right: 10px; }
  .week-page-head { align-items: start; flex-direction: column; gap: 16px; }
  .week-page-head h2 { font-size: 37px; }
  .week-summary { max-width: none; }
  .can-do { display: block; }
  .can-do p { margin-top: 15px; }
  .task-card { grid-template-columns: 44px minmax(0, 1fr); gap: 11px; padding: 15px; }
  .task-side { grid-column: 2; align-items: start; flex-direction: row; flex-wrap: wrap; }
  .week-tools { grid-template-columns: 1fr; }
  .shelf-grid { grid-template-columns: 1fr; }
  .site-footer { align-items: start; flex-direction: column; margin-top: 43px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto !important; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: 120ms !important; }
  .primary-button:hover, .primary-button:focus-visible, .secondary-button:hover, .secondary-button:focus-visible { transform: none; }
  .progress-track span { transition-duration: 80ms !important; }
}

::selection { background: var(--moss); color: var(--surface); }
textarea { caret-color: var(--vermilion); }
.week-nav { scrollbar-color: #9fb3a5 transparent; scrollbar-width: thin; }