@charset "UTF-8";
/* 教程中心页面样式 */

.desktop-nav a[aria-current="page"] {
  color: var(--ink);
}

.desktop-nav a[aria-current="page"]::after {
  transform: scaleX(1);
}

.tutorial-search label {
  display: block;
  margin-bottom: 10px;
  color: #4e535d;
  font-size: 10px;
  font-weight: 800;
}

.tutorial-search > div {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
}

.tutorial-search input {
  width: 100%;
  min-height: 48px;
  padding: 0 15px;
  color: var(--ink);
  background: #f6f7f9;
  border: 1px solid #e4e6ea;
  border-radius: 10px;
  font: inherit;
  font-size: 12px;
  outline: none;
  transition:
    border-color 0.2s ease,
    box-shadow 0.2s ease,
    background-color 0.2s ease;
}

.tutorial-search input:focus {
  background: #fff;
  border-color: #aeb4fa;
  box-shadow: 0 0 0 4px rgba(89, 100, 242, 0.1);
}

.tutorial-search button {
  min-width: 76px;
  padding: 0 16px;
  color: #fff;
  background: var(--ink);
  border: 0;
  border-radius: 10px;
  cursor: pointer;
  font-size: 11px;
  font-weight: 750;
}

.tutorial-brand-context {
  margin-top: 17px;
  padding: 12px 13px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 10px;
  background: #f0f2ff;
  border: 1px solid #dfe2ff;
  border-radius: 10px;
}

.tutorial-brand-context[hidden] {
  display: none;
}

.tutorial-brand-context small {
  color: #858a96;
  font-size: 8px;
}

.tutorial-brand-context strong {
  font-size: 11px;
}

.tutorial-brand-context a {
  color: var(--accent-dark);
  font-size: 9px;
  font-weight: 750;
}

.tutorial-content {
  padding: 62px 0 120px;
  background:
    radial-gradient(circle at 8% 24%, rgba(89, 100, 242, 0.06), transparent 24%),
    radial-gradient(circle at 94% 82%, rgba(48, 170, 112, 0.055), transparent 22%),
    var(--surface);
  scroll-margin-top: 72px;
}

.tutorial-library-head {
  margin-bottom: 17px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
}

.tutorial-library-head small {
  display: block;
  margin-bottom: 7px;
  color: var(--accent);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.tutorial-library-head h2 {
  margin: 0;
  font-size: 28px;
  letter-spacing: -0.035em;
}

.tutorial-library-head > p {
  max-width: 420px;
  margin: 0;
  color: #7d828c;
  font-size: 10px;
  font-weight: 650;
  line-height: 1.75;
  text-align: right;
}

.tutorial-filters {
  width: fit-content;
  margin-bottom: 20px;
  padding: 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  background: rgba(255, 255, 255, 0.84);
  border: 1px solid #e3e5e9;
  border-radius: 13px;
}

.tutorial-filters button {
  min-height: 40px;
  padding: 0 14px;
  color: #696e78;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 9px;
  cursor: pointer;
  font-size: 10px;
  font-weight: 750;
  transition:
    color 0.2s ease,
    background-color 0.2s ease,
    box-shadow 0.2s ease;
}

.tutorial-filters button:hover {
  color: var(--ink);
  background: #f1f2f5;
}

.tutorial-filters button.is-active {
  color: #fff;
  background: var(--ink);
  box-shadow: 0 8px 18px rgba(16, 17, 20, 0.14);
}

.tutorial-workspace {
  display: grid;
  grid-template-columns: minmax(300px, 0.36fr) minmax(0, 1fr);
  align-items: start;
  gap: 22px;
}

.tutorial-workspace[hidden] {
  display: none;
}

.tutorial-directory-card {
  position: sticky;
  top: 92px;
  min-width: 0;
  padding: 13px;
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid #e1e3e8;
  border-radius: 17px;
  box-shadow: 0 16px 42px rgba(25, 28, 38, 0.065);
}

.tutorial-directory-card > .tutorial-search {
  padding: 8px 8px 16px;
}

.tutorial-directory-card .tutorial-search button {
  min-width: 60px;
  padding-inline: 12px;
}

.tutorial-directory-head {
  min-height: 62px;
  padding: 12px 9px;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  border-bottom: 1px solid #eceef1;
}

.tutorial-directory-head strong {
  font-size: 22px;
  letter-spacing: -0.025em;
}

.tutorial-directory {
  padding-top: 9px;
  display: grid;
  gap: 5px;
}

.tutorial-directory-group {
  border: 1px solid transparent;
  border-radius: 11px;
  transition:
    border-color 0.2s ease,
    background-color 0.2s ease;
}

.tutorial-directory-group.is-open {
  background: #f8f9fb;
  border-color: #e8eaee;
}

.tutorial-directory-toggle {
  width: 100%;
  min-height: 49px;
  padding: 0 12px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 9px;
  color: #31343a;
  background: transparent;
  border: 0;
  border-radius: 10px;
  cursor: pointer;
  text-align: left;
}

.tutorial-directory-toggle strong {
  min-width: 0;
  font-size: 14px;
  line-height: 1.45;
}

.tutorial-directory-chevron {
  width: 7px;
  height: 7px;
  border-right: 1.5px solid #8a8f98;
  border-bottom: 1.5px solid #8a8f98;
  transform: rotate(45deg) translate(-2px, 2px);
  transition: transform 0.2s ease;
}

.tutorial-directory-group.is-open .tutorial-directory-chevron {
  transform: rotate(225deg) translate(-1px, -1px);
}

.tutorial-directory-items {
  margin: 0 8px;
  padding: 0 0 7px 10px;
  display: grid;
  grid-template-rows: 0fr;
  opacity: 0;
  transition:
    grid-template-rows 0.24s ease,
    opacity 0.2s ease;
}

.tutorial-directory-items > div {
  min-height: 0;
  overflow: hidden;
}

.tutorial-directory-group.is-open .tutorial-directory-items {
  grid-template-rows: 1fr;
  opacity: 1;
}

.tutorial-directory-subgroup {
  margin: 4px 2px;
  border-radius: 9px;
}

.tutorial-directory-subtoggle {
  width: 100%;
  min-height: 42px;
  padding: 7px 10px 7px 14px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 8px;
  color: #4b5059;
  background: transparent;
  border: 0;
  border-radius: 9px;
  cursor: pointer;
  text-align: left;
}

.tutorial-directory-subtoggle:hover {
  color: var(--ink);
  background: #fff;
}

.tutorial-directory-subtoggle strong {
  min-width: 0;
  font-size: 12px;
  font-weight: 750;
  line-height: 1.5;
}

.tutorial-directory-subchevron {
  width: 6px;
  height: 6px;
  border-right: 1.5px solid #969aa3;
  border-bottom: 1.5px solid #969aa3;
  transform: rotate(45deg) translate(-1px, 1px);
  transition: transform 0.2s ease;
}

.tutorial-directory-subgroup.is-open .tutorial-directory-subchevron {
  transform: rotate(225deg);
}

.tutorial-directory-subitems {
  padding: 0 5px 0 12px;
  display: grid;
  grid-template-rows: 0fr;
  opacity: 0;
  transition:
    grid-template-rows 0.22s ease,
    opacity 0.18s ease;
}

.tutorial-directory-subitems > div {
  min-height: 0;
  overflow: hidden;
}

.tutorial-directory-subgroup.is-open .tutorial-directory-subitems {
  grid-template-rows: 1fr;
  opacity: 1;
}

.tutorial-directory-item {
  position: relative;
  width: 100%;
  min-height: 39px;
  padding: 8px 27px 8px 12px;
  display: block;
  color: #676c76;
  background: transparent;
  border: 0;
  border-left: 1px solid #dfe2e7;
  cursor: pointer;
  font-size: 10px;
  font-weight: 650;
  line-height: 1.5;
  text-align: left;
  transition:
    color 0.2s ease,
    background-color 0.2s ease,
    border-color 0.2s ease;
}

.tutorial-directory-item::after {
  content: "›";
  position: absolute;
  top: 50%;
  right: 10px;
  color: #a0a4ac;
  font-size: 15px;
  transform: translateY(-52%);
}

.tutorial-directory-item:hover {
  color: var(--ink);
  background: #fff;
  border-left-color: var(--group-accent);
}

.tutorial-directory-item.is-active {
  color: var(--group-accent);
  background: #fff;
  border-left-color: var(--group-accent);
  font-weight: 800;
  box-shadow: 0 5px 16px rgba(28, 31, 41, 0.055);
}

.tutorial-directory-item.tutorial-directory-root {
  min-height: 49px;
  padding: 10px 30px 10px 12px;
  color: #31343a;
  border-left: 0;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 750;
}

.tutorial-directory-item.tutorial-directory-root.is-active {
  color: var(--group-accent);
  background: var(--group-soft);
  border-left: 0;
  box-shadow: none;
}

.tutorial-directory-item.is-nested {
  min-height: 40px;
  padding: 8px 25px 8px 14px;
  font-size: 11.5px;
}

.tutorial-reader {
  --reader-accent: #5964f2;
  --reader-soft: #eef0ff;
  scroll-margin-top: 88px;
  min-width: 0;
  min-height: 540px;
  padding: clamp(27px, 4vw, 48px);
  color: var(--ink);
  background:
    radial-gradient(circle at 100% 0, var(--reader-soft), transparent 30%),
    #fff;
  border: 1px solid #e1e3e8;
  border-radius: 18px;
  box-shadow: 0 16px 44px rgba(25, 28, 38, 0.06);
  outline: none;
}

.tutorial-reader-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 28px;
}

.tutorial-reader-header small {
  display: block;
  margin-bottom: 7px;
  color: var(--reader-accent);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.tutorial-reader-header h2 {
  margin: 0;
  font-size: clamp(25px, 3vw, 34px);
  line-height: 1.22;
  letter-spacing: -0.045em;
}

.tutorial-reader-summary {
  max-width: 760px;
  margin: 20px 0 14px;
  color: #666b76;
  font-size: 12px;
  line-height: 1.85;
}

.tutorial-reader-meta {
  margin-bottom: 34px;
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.tutorial-reader-meta span {
  padding: 6px 10px;
  color: var(--reader-accent);
  background: var(--reader-soft);
  border-radius: 7px;
  font-size: 8px;
  font-weight: 750;
}

.tutorial-reader-section-heading {
  margin-bottom: 12px;
  padding-top: 21px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border-top: 1px solid #eceef1;
}

.tutorial-reader-section-heading > span {
  font-size: 18px;
  font-weight: 800;
}

.tutorial-reader-section-heading small {
  color: #92969f;
  font-size: 12px;
}

.tutorial-step-list {
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
  list-style: none;
  counter-reset: tutorial-step;
}

.tutorial-step-list li {
  min-height: 76px;
  padding: 17px 18px;
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  align-items: center;
  gap: 16px;
  background: #f8f9fa;
  border: 1px solid #e9ebee;
  border-radius: 11px;
  counter-increment: tutorial-step;
  font-size: 15px;
  line-height: 1.75;
}

.tutorial-step-list li::before {
  content: counter(tutorial-step, decimal-leading-zero);
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--reader-accent);
  background: var(--reader-soft);
  border-radius: 9px;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 11px;
  font-weight: 800;
}

.tutorial-reader-note {
  margin: 15px 2px 0;
  color: #8a8f98;
  font-size: 12px;
  line-height: 1.75;
}

.tutorial-directory-toggle:focus-visible,
.tutorial-directory-subtoggle:focus-visible,
.tutorial-directory-item:focus-visible,
.tutorial-filters button:focus-visible,
.tutorial-search button:focus-visible,
.tutorial-empty button:focus-visible,
.tutorial-reader:focus-visible {
  outline: 3px solid rgba(89, 100, 242, 0.24);
  outline-offset: 3px;
}

.tutorial-empty {
  padding: 46px 22px;
  color: var(--muted);
  background: #fff;
  border: 1px solid #e2e4e8;
  border-radius: 15px;
  text-align: center;
}

.tutorial-empty[hidden] {
  display: none;
}

.tutorial-empty strong {
  color: var(--ink);
  font-size: 16px;
}

.tutorial-empty p {
  margin: 6px 0 17px;
  font-size: 11px;
}

.tutorial-empty button {
  min-height: 38px;
  padding: 0 14px;
  color: #fff;
  background: var(--ink);
  border: 0;
  border-radius: 8px;
  cursor: pointer;
  font-size: 10px;
  font-weight: 750;
}

.tutorial-help {
  min-height: 105px;
  margin-top: 38px;
  padding: 23px 25px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 35px;
  color: #fff;
  background: var(--ink);
  border-radius: 16px;
}

.tutorial-help > div {
  display: grid;
}

.tutorial-help small {
  color: #898e98;
  font-size: 9px;
}

.tutorial-help strong {
  font-size: 14px;
}

.tutorial-help .button {
  color: var(--ink);
  background: #fff;
  box-shadow: none;
}

.tutorial-footer {
  background: #fff;
}

@media (max-width: 920px) {
  .tutorial-workspace {
    grid-template-columns: minmax(270px, 0.4fr) minmax(0, 1fr);
    gap: 16px;
  }

  .tutorial-reader {
    padding: 28px 24px;
  }
}

@media (max-width: 680px) {
  .tutorial-content {
    padding: 44px 0 88px;
  }

  .tutorial-library-head {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
  }

  .tutorial-library-head > p {
    max-width: none;
    text-align: left;
  }

  .tutorial-workspace {
    grid-template-columns: 1fr;
  }

  .tutorial-directory-card {
    position: static;
  }

  .tutorial-directory {
    max-height: min(56vh, 460px);
    padding-right: 4px;
    overflow-y: auto;
    overscroll-behavior: contain;
  }

  .tutorial-directory-head strong {
    font-size: 21px;
  }

  .tutorial-reader {
    min-height: 0;
    padding: 25px 18px;
  }

  .tutorial-reader-header h2 {
    font-size: 25px;
  }

  .tutorial-reader-section-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 3px;
  }

  .tutorial-step-list li {
    grid-template-columns: 36px minmax(0, 1fr);
    gap: 12px;
    padding: 14px;
  }

  .tutorial-step-list li::before {
    width: 36px;
    height: 36px;
    font-size: 10px;
  }

  .tutorial-help {
    align-items: stretch;
    flex-direction: column;
  }

  .tutorial-help .button {
    width: 100%;
  }
}

@media (max-width: 420px) {
  .tutorial-page .desktop-nav {
    gap: 11px;
  }

  .tutorial-page .desktop-nav a {
    font-size: 11px;
  }

  .tutorial-search > div {
    grid-template-columns: 1fr;
  }

  .tutorial-search button {
    min-height: 43px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .tutorial-directory-group,
  .tutorial-directory-subgroup,
  .tutorial-directory-chevron,
  .tutorial-directory-subchevron,
  .tutorial-directory-items,
  .tutorial-directory-subitems,
  .tutorial-directory-item {
    transition: none;
  }
}