:root {
  --ink: #202a24;
  --muted: rgba(32, 42, 36, .72);
  --on-image: rgba(255, 255, 255, .98);
  --on-image-muted: rgba(255, 255, 255, .82);
  --green: #35644a;
  --green-deep: #294f3a;
  --green-soft: #d7eadc;
  --gold: #a47c45;
  --border: rgba(62, 74, 66, .2);
  --border-image: rgba(255, 255, 255, .36);
  --display: rgba(252, 249, 241, .18);
  --control: rgba(255, 255, 255, .58);
  --reading: rgba(252, 249, 241, .92);
  --popup: rgba(252, 249, 241, .96);
  --panel-shadow: 0 18px 46px rgba(9, 17, 12, .2);
  --text-shadow: 0 1px 1px rgba(0, 0, 0, .56);
  --radius-panel: 20px;
  --radius-control: 12px;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-serif: "Songti SC", "STSong", "SimSun", serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background: #26352d;
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
}

.wallpaper {
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    linear-gradient(90deg, rgba(12, 21, 15, .7) 0%, rgba(12, 21, 15, .25) 47%, rgba(12, 21, 15, .42) 100%),
    linear-gradient(180deg, rgba(8, 14, 10, .08), rgba(8, 14, 10, .4)),
    url("../../assets/home/hero-tcm-study.webp") center / cover no-repeat;
}

.wallpaper::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 72% 28%, rgba(219, 181, 119, .14), transparent 34%),
    linear-gradient(180deg, transparent 40%, rgba(11, 19, 14, .28));
}

.page {
  width: min(1500px, 100%);
  min-height: 100vh;
  margin: 0 auto;
  padding: 18px 24px 22px;
}

.glass-display,
.glass-control,
.glass-reading {
  border-radius: var(--radius-panel);
  box-shadow: var(--panel-shadow);
  backdrop-filter: blur(18px) saturate(118%);
  -webkit-backdrop-filter: blur(18px) saturate(118%);
}

.glass-display {
  border: 1px solid var(--border-image);
  background: var(--display);
}

.glass-control {
  border: 1px solid rgba(255, 255, 255, .38);
  background: var(--control);
}

.glass-reading {
  border: 1px solid var(--border);
  background: var(--reading);
}

.on-image {
  color: var(--on-image);
  text-shadow: var(--text-shadow);
}

.topbar {
  min-height: 60px;
  display: grid;
  grid-template-columns: minmax(270px, 1fr) auto minmax(240px, 1fr);
  align-items: center;
  gap: 18px;
  padding: 8px 11px 8px 18px;
}

.brand {
  min-width: 0;
  display: flex;
  align-items: baseline;
  gap: 13px;
}

.brand strong {
  font: 600 18px/1 var(--font-serif);
  letter-spacing: .18em;
  white-space: nowrap;
}

.brand span {
  padding-left: 13px;
  border-left: 1px solid rgba(255, 255, 255, .38);
  color: var(--on-image-muted);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .09em;
  white-space: nowrap;
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 3px;
  border-radius: 13px;
  box-shadow: none;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.primary-nav a {
  min-height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 7px 14px;
  border-radius: 9px;
  color: var(--ink);
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}

.primary-nav a:hover,
.primary-nav a:focus-visible {
  background: rgba(255, 255, 255, .58);
}

.primary-nav a.active {
  color: #fff;
  background: var(--green);
}

.header-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 14px;
  font-size: 12px;
}

.rank-link {
  padding: 8px 4px;
}

.account-button {
  min-height: 34px;
  padding: 7px 13px;
  border-radius: 9px;
  color: rgba(32, 42, 36, .72);
  cursor: not-allowed;
  box-shadow: none;
}

.hero {
  min-height: 310px;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(440px, .92fr);
  align-items: center;
  gap: clamp(44px, 7vw, 110px);
  padding: clamp(42px, 7vh, 82px) clamp(18px, 4vw, 62px) 34px;
}

.hero-copy {
  max-width: 690px;
}

.eyebrow,
.panel-kicker {
  display: block;
  margin-bottom: 10px;
  color: var(--green-soft);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .2em;
}

.hero h1 {
  max-width: 660px;
  margin: 0 0 16px;
  font: 600 clamp(42px, 5.5vw, 72px)/1.12 var(--font-serif);
  letter-spacing: .025em;
}

.hero-copy > p {
  max-width: 610px;
  margin: 0;
  color: var(--on-image-muted);
  font: 16px/1.8 var(--font-serif);
  letter-spacing: .035em;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px;
  margin-top: 25px;
}

.primary-button {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  border-radius: 10px;
  color: #fff;
  background: linear-gradient(135deg, var(--green), var(--green-deep));
  box-shadow: 0 10px 24px rgba(17, 51, 34, .26);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .05em;
  text-shadow: none;
}

.quiet-link {
  padding: 10px 3px;
  font-size: 13px;
}

.overview {
  min-width: 0;
  overflow: hidden;
}

.overview-primary {
  min-height: 128px;
  padding: 20px 22px 16px;
  border-bottom: 1px solid var(--border);
}

.overview .panel-kicker,
.secondary-card .panel-kicker {
  color: var(--green);
}

.overview-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.overview-grid > article {
  min-width: 0;
  min-height: 132px;
  padding: 17px 22px 18px;
}

.overview-grid > article + article {
  border-left: 1px solid var(--border);
}

.overview h2 {
  margin: 0 0 5px;
  font: 600 15px var(--font-serif);
  letter-spacing: .08em;
}

.dashboard-empty {
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: 7px;
}

.dashboard-empty p {
  margin: 0;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.6;
}

.dashboard-empty a {
  color: var(--green);
  font-size: 12px;
  font-weight: 700;
}

.dashboard-empty .recent-learning-title {
  overflow: hidden;
  max-width: 100%;
  font: 600 18px/1.45 var(--font-serif);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.dashboard-empty .local-duration {
  color: var(--green);
  font: 600 24px/1.2 var(--font-serif);
}

.status-pill {
  display: inline-flex;
  max-width: 100%;
  padding: 4px 8px;
  border: 1px solid rgba(53, 100, 74, .34);
  border-radius: 999px;
  color: var(--green);
  font-size: 10px;
  line-height: 1.35;
}

.learning-path {
  scroll-margin-top: 20px;
}

.section-heading {
  min-height: 64px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 14px;
  padding: 0 5px;
}

.section-heading .eyebrow {
  margin-bottom: 6px;
}

.section-heading h2 {
  margin: 0;
  font: 600 26px/1.2 var(--font-serif);
  letter-spacing: .06em;
}

.section-heading p {
  max-width: 520px;
  margin: 0 0 2px;
  color: var(--on-image-muted);
  font-size: 12px;
  line-height: 1.7;
  text-align: right;
}

.module-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.module-card {
  min-width: 0;
  overflow: hidden;
  color: var(--ink);
  transition: transform .18s ease, background .18s ease, box-shadow .18s ease;
}

.module-card:hover,
.module-card:focus-visible {
  transform: translateY(-4px);
  background: rgba(255, 255, 255, .72);
  box-shadow: 0 22px 54px rgba(9, 17, 12, .26);
}

.module-image {
  height: 114px;
  display: flex;
  align-items: flex-end;
  padding: 12px;
  background-position: center;
  background-size: cover;
}

.module-image span {
  padding: 5px 8px;
  border: 1px solid rgba(255, 255, 255, .32);
  border-radius: 999px;
  color: #fff;
  background: rgba(15, 22, 17, .42);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .12em;
  text-shadow: var(--text-shadow);
}

.module-image-learn {
  background-image:
    linear-gradient(180deg, rgba(13, 22, 16, .04), rgba(13, 22, 16, .55)),
    url("../../suowen-preview/assets/learn.webp");
  background-position: center 48%;
}

.module-image-study {
  background-image:
    linear-gradient(180deg, rgba(13, 22, 16, .04), rgba(13, 22, 16, .55)),
    url("../../suowen-preview/assets/studyroom.webp");
  background-position: center 52%;
}

.module-image-training {
  background-image:
    linear-gradient(180deg, rgba(13, 22, 16, .04), rgba(13, 22, 16, .55)),
    url("../../suowen-preview/assets/training.webp");
  background-position: center 45%;
}

.module-image-games {
  background-image:
    linear-gradient(180deg, rgba(13, 22, 16, .04), rgba(13, 22, 16, .55)),
    url("../../suowen-preview/assets/games.webp");
  background-position: center 50%;
}

.module-copy {
  position: relative;
  min-height: 165px;
  padding: 16px 17px 17px;
}

.module-number {
  position: absolute;
  top: 14px;
  right: 15px;
  color: rgba(53, 100, 74, .5);
  font: 600 16px var(--font-serif);
}

.module-copy h3 {
  margin: 0 0 8px;
  font: 600 21px var(--font-serif);
  letter-spacing: .07em;
}

.module-copy p {
  min-height: 54px;
  margin: 0 0 13px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.65;
}

.module-copy strong {
  color: var(--green);
  font-size: 12px;
}

.secondary-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.secondary-card {
  min-height: 142px;
  padding: 20px 22px;
}

.secondary-card h2 {
  margin: 0 0 12px;
  font: 600 18px var(--font-serif);
  letter-spacing: .05em;
}

.secondary-card p {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.6;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  padding: 20px 5px 0;
  color: var(--on-image-muted);
  font-size: 11px;
}

.site-footer strong {
  color: var(--on-image);
  font: 600 15px var(--font-serif);
  letter-spacing: .14em;
}

.site-footer p {
  margin: 0;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 3px;
}

@media (max-width: 1120px) {
  .topbar {
    grid-template-columns: 1fr auto;
  }

  .primary-nav {
    order: 3;
    grid-column: 1 / -1;
    justify-self: center;
  }

  .hero {
    grid-template-columns: minmax(0, 1fr) minmax(380px, .9fr);
    gap: 34px;
    padding-inline: 18px;
  }

  .module-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 780px) {
  .page {
    padding: 12px 12px 24px;
  }

  .topbar {
    min-height: 56px;
    grid-template-columns: 1fr auto;
    gap: 8px;
    padding: 8px 10px;
  }

  .brand span,
  .rank-link {
    display: none;
  }

  .primary-nav {
    width: 100%;
    justify-content: flex-start;
    overflow-x: auto;
  }

  .primary-nav a {
    flex: 0 0 auto;
  }

  .account-button {
    padding-inline: 10px;
  }

  .hero {
    min-height: 0;
    grid-template-columns: minmax(0, 1fr);
    gap: 26px;
    padding: 52px 4px 28px;
  }

  .hero h1 {
    font-size: clamp(38px, 12vw, 54px);
  }

  .hero-copy > p {
    font-size: 15px;
  }

  .overview-grid {
    grid-template-columns: 1fr;
  }

  .overview-grid > article + article {
    border-top: 1px solid var(--border);
    border-left: 0;
  }

  .section-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 7px;
    padding-inline: 4px;
  }

  .section-heading p {
    text-align: left;
  }

  .module-grid,
  .secondary-grid {
    grid-template-columns: 1fr;
  }

  .module-image {
    height: 150px;
  }

  .module-copy {
    min-height: 0;
  }

  .module-copy p {
    min-height: 0;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}

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

  *,
  *::before,
  *::after {
    transition: none !important;
  }
}