/* 学记宝 · 公共首页 */

@import url("fonts.css");

:root {
  --home-bg: #f5f3ff;
  --home-surface: #faf9ff;
  --home-ink: #1e1b4b;
  --home-ink-soft: #4b5563;
  --home-muted: #6b7280;
  --home-line: rgba(30, 27, 75, 0.1);
  --home-jade: #5b5fef;
  --home-jade-deep: #3730a3;
  --home-mist: #e8e7f2;
  --home-header-h: 64px;
  --home-max: 1080px;
  /* 免费可商用：阿里巴巴普惠体 + OFL 回退 */
  --home-sans: var(--xjb-font);
  --home-serif: var(--xjb-font);
  --home-focus: 0 0 0 3px rgba(91, 95, 239, 0.28);
  --home-danger: #c24732;
  --home-gold: #b8860b;
  --home-teal: var(--home-jade);
  --home-teal-mid: #7c5cff;
  --home-teal-deep: var(--home-jade-deep);
  --home-line-solid: #e8e7f2;
}

* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

[hidden] {
  display: none !important;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--home-header-h) + 12px);
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100%;
}

body.home-page {
  color: var(--home-ink);
  font-family: var(--home-sans);
  background: var(--home-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  padding-bottom: 0;
  line-height: 1.55;
}

body.home-nav-open {
  overflow: hidden;
}

body.home-nav-open::before {
  content: "";
  position: fixed;
  inset: var(--home-header-h) 0 0;
  background: rgba(30, 27, 75, 0.38);
  z-index: 45;
}

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

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button {
  font: inherit;
  color: inherit;
  cursor: pointer;
}

.home-skip {
  position: absolute;
  left: 12px;
  top: -48px;
  z-index: 200;
  padding: 8px 14px;
  border-radius: 8px;
  background: var(--home-jade-deep);
  color: #fff;
  font-size: 0.875rem;
  font-weight: 600;
}

.home-skip:focus {
  top: 12px;
  outline: none;
  box-shadow: var(--home-focus);
}

.home-shell {
  width: min(var(--home-max), calc(100% - 48px));
  margin: 0 auto;
}

.home-kicker {
  margin: 0 0 10px;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  color: var(--home-jade);
}

.home-h2 {
  margin: 0 0 16px;
  font-family: var(--home-serif);
  font-size: clamp(1.55rem, 3vw, 2rem);
  font-weight: 600;
  letter-spacing: 0.04em;
  line-height: 1.25;
  color: var(--home-ink);
}

.home-lead {
  margin: 0;
  max-width: 42em;
  color: var(--home-ink-soft);
  font-size: 1.02rem;
  line-height: 1.7;
}

.home-section {
  padding: 56px 0;
}

.home-section + .home-section {
  border-top: 1px solid var(--home-line);
}

.home-section-head {
  margin-bottom: 28px;
}

.home-section-head .home-h2 {
  margin-bottom: 12px;
}

/* Header */

.home-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--home-header-h);
  background: color-mix(in srgb, var(--home-surface) 88%, transparent);
  border-bottom: 1px solid var(--home-line);
  backdrop-filter: saturate(1.2) blur(14px);
  -webkit-backdrop-filter: saturate(1.2) blur(14px);
}

.home-header-inner {
  position: relative;
  height: var(--home-header-h);
  display: flex;
  align-items: center;
  gap: 24px;
}

.home-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  min-width: 0;
}

.home-brand img {
  width: 36px;
  height: 36px;
  flex: 0 0 auto;
  border-radius: 8px;
}

.home-brand-text {
  display: flex;
  align-items: center;
  min-width: 0;
}

.home-brand:focus-visible,
.home-nav a:focus-visible,
.home-hero-scroll:focus-visible,
.home-footer a:focus-visible {
  outline: none;
  box-shadow: var(--home-focus);
  border-radius: 4px;
}

.home-brand-name {
  display: flex;
  align-items: center;
  gap: 6px;
  line-height: 1.15;
}

.home-brand-name strong {
  font-family: var(--home-serif);
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--home-ink);
}

.home-site-mark {
  display: inline-flex;
  align-items: center;
  height: 18px;
  padding: 0 6px;
  border: 1px solid rgba(91, 95, 239, 0.28);
  border-radius: 999px;
  background: #eef0ff;
  color: var(--home-jade-deep);
  font-family: var(--home-sans);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  line-height: 1;
}

.home-header-menus {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-left: auto;
  min-width: 0;
}

.home-nav {
  display: flex;
  align-items: center;
  gap: 4px 8px;
}

.home-nav a {
  padding: 8px 10px;
  font-size: 0.9rem;
  color: var(--home-ink-soft);
  letter-spacing: 0.04em;
}

.home-nav a:hover {
  color: var(--home-jade-deep);
}

.home-nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  margin-left: auto;
  border: 1px solid var(--home-line-solid);
  border-radius: 10px;
  background: var(--home-surface);
  align-items: center;
  justify-content: center;
}

.home-nav-toggle span,
.home-nav-toggle span::before,
.home-nav-toggle span::after {
  display: block;
  width: 16px;
  height: 1.5px;
  background: var(--home-ink);
  border-radius: 2px;
  position: relative;
}

.home-nav-toggle span::before,
.home-nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
}

.home-nav-toggle span::before {
  top: -5px;
}

.home-nav-toggle span::after {
  top: 5px;
}

.home-nav-toggle[aria-expanded="true"] span {
  background: transparent;
}

.home-nav-toggle[aria-expanded="true"] span::before {
  top: 0;
  transform: rotate(45deg);
}

.home-nav-toggle[aria-expanded="true"] span::after {
  top: 0;
  transform: rotate(-45deg);
}

/* Hero */

.home-hero {
  position: relative;
  display: flex;
  align-items: center;
  overflow: hidden;
  background:
    radial-gradient(90% 70% at 85% 30%, rgba(238, 240, 255, 0.9) 0%, transparent 55%),
    radial-gradient(70% 60% at 8% 80%, rgba(245, 243, 255, 0.85) 0%, transparent 50%),
    linear-gradient(165deg, #ebebef 0%, #ebe9ff 45%, #e8e7f2 100%);
}

.home-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(
      -12deg,
      transparent 0 18px,
      rgba(30, 27, 75, 0.012) 18px 19px
    );
  pointer-events: none;
}

.home-hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(220px, 0.8fr);
  gap: 48px 56px;
  align-items: center;
  width: min(var(--home-max), calc(100% - 48px));
  margin: 0 auto;
  padding: 64px 0 56px;
}

.home-hero-copy {
  max-width: 36rem;
}

.home-hero-brand {
  margin: 0 0 14px;
  font-family: var(--home-serif);
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1.1;
  color: var(--home-ink);
}

.home-hero-slogan {
  margin: 0 0 14px;
  font-family: var(--home-serif);
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  color: var(--home-jade-deep);
  letter-spacing: 0.12em;
}

.home-hero-lead {
  margin: 0;
  max-width: 32rem;
  color: var(--home-ink-soft);
  font-size: 1.02rem;
  line-height: 1.75;
}

.home-hero-scroll {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 28px;
  font-size: 0.82rem;
  letter-spacing: 0.16em;
  color: var(--home-muted);
}

.home-hero-scroll::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--home-jade);
}

.home-hero-scroll:hover {
  color: var(--home-jade-deep);
}

.home-hero-art {
  display: flex;
  justify-content: flex-end;
  align-items: center;
}

.home-hero-notebook {
  width: min(260px, 100%);
  aspect-ratio: 3 / 4;
  border-radius: 6px 22px 6px 22px;
  background:
    linear-gradient(160deg, rgba(255, 255, 255, 0.55) 0%, transparent 40%),
    linear-gradient(200deg, #c4b5fd 0%, #a78bfa 55%, #7c5cff 100%);
  box-shadow: 0 20px 48px rgba(91, 95, 239, 0.14);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 12px;
  padding: 0 18%;
}

.home-hero-notebook::after {
  content: "";
  position: absolute;
  left: 14%;
  right: 14%;
  top: 18%;
  bottom: 22%;
  border: 1px solid rgba(255, 255, 255, 0.35);
  background: linear-gradient(180deg, rgba(250, 249, 255, 0.55) 0%, rgba(250, 249, 255, 0.12) 100%);
  pointer-events: none;
}

.home-hero-notebook span {
  position: relative;
  z-index: 1;
  display: block;
  height: 1px;
  background: rgba(30, 27, 75, 0.22);
}

.home-hero-notebook span:nth-child(2) { width: 78%; }
.home-hero-notebook span:nth-child(3) { width: 64%; }
.home-hero-notebook span:nth-child(4) { width: 86%; }
.home-hero-notebook span:nth-child(5) { width: 70%; }

@keyframes home-rise {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes home-lines {
  from {
    opacity: 0;
    transform: scaleX(0.6);
  }
  to {
    opacity: 1;
    transform: scaleX(1);
  }
}

.home-hero-copy {
  animation: home-rise 0.7s ease both;
}

.home-hero-notebook {
  animation: home-rise 0.85s 0.12s ease both;
}

.home-hero-notebook span {
  transform-origin: left center;
  animation: home-lines 0.6s ease both;
}

.home-hero-notebook span:nth-child(1) { animation-delay: 0.35s; }
.home-hero-notebook span:nth-child(2) { animation-delay: 0.42s; }
.home-hero-notebook span:nth-child(3) { animation-delay: 0.49s; }
.home-hero-notebook span:nth-child(4) { animation-delay: 0.56s; }
.home-hero-notebook span:nth-child(5) { animation-delay: 0.63s; }

/* Idea */

.home-idea {
  background: var(--home-surface);
  border-top: none;
}

.home-idea-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.9fr);
  gap: 32px 48px;
  align-items: center;
}

.home-idea-main .home-h2 {
  margin-bottom: 12px;
}

.home-quote {
  margin: 0;
  padding: 20px 0 20px 22px;
  border-left: 2px solid var(--home-jade);
  font-family: var(--home-serif);
  font-size: clamp(1.2rem, 2.2vw, 1.5rem);
  line-height: 1.65;
  color: var(--home-ink);
}

/* Pillars */

.home-pillar-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.home-pillar-grid article {
  padding: 22px 20px;
  background: #fff;
  border: 1px solid var(--home-line);
}

.home-pillar-num {
  display: block;
  margin-bottom: 10px;
  font-family: var(--home-serif);
  font-size: 0.82rem;
  letter-spacing: 0.2em;
  color: var(--home-jade);
}

.home-pillar-grid h3 {
  margin: 0 0 10px;
  font-family: var(--home-serif);
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.home-pillar-grid p {
  margin: 0;
  color: var(--home-ink-soft);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* Method */

.home-method {
  background: var(--home-ink);
  color: #ebe9ff;
  border-top: none;
}

.home-method .home-kicker {
  color: #a5b4fc;
}

.home-method .home-h2 {
  color: #faf9ff;
}

.home-method .home-lead {
  color: rgba(245, 243, 255, 0.72);
}

.home-method-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  counter-reset: home-step;
}

.home-method-list li {
  margin: 0;
  padding: 20px 18px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.04);
  counter-increment: home-step;
}

.home-method-list li::before {
  content: "0" counter(home-step);
  display: block;
  margin-bottom: 12px;
  font-family: var(--home-serif);
  font-size: 0.82rem;
  letter-spacing: 0.18em;
  color: #a5b4fc;
}

.home-method-list h3 {
  margin: 0 0 8px;
  font-size: 1.02rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: #faf9ff;
}

.home-method-list p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.65;
  color: rgba(245, 243, 255, 0.68);
}

/* About */

.home-about-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.95fr;
  gap: 28px 40px;
  align-items: stretch;
}

.home-about-note {
  margin: 0;
  padding: 24px 26px;
  background: var(--home-surface);
  border: 1px solid var(--home-line);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.home-about-note-label {
  margin: 0 0 10px !important;
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  color: var(--home-jade);
  font-weight: 500;
}

.home-about-note p {
  margin: 0;
  color: var(--home-ink-soft);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* Footer */

.home-footer {
  padding: 40px 0 28px;
  border-top: 1px solid var(--home-line);
  background: #ebe9ff;
  color: var(--home-ink-soft);
}

.home-footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 28px;
}

.home-footer-brand {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.home-footer-brand img {
  width: 40px;
  height: 40px;
  flex: 0 0 auto;
  border-radius: 10px;
}

.home-footer-brand strong {
  display: block;
  font-family: var(--home-serif);
  font-size: 1.15rem;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
  color: var(--home-ink);
  font-weight: 600;
}

.home-footer-brand p {
  margin: 0;
  color: var(--home-muted);
  font-size: 0.9rem;
  line-height: 1.65;
  max-width: 22rem;
}

.home-footer h3 {
  margin: 0 0 12px;
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  color: var(--home-muted);
  font-weight: 500;
}

.home-footer ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.home-footer li + li {
  margin-top: 8px;
}

.home-footer a {
  color: var(--home-ink-soft);
  font-size: 0.9rem;
}

.home-footer a:hover {
  color: var(--home-jade-deep);
  text-decoration: underline;
}

.home-beian {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 16px;
  margin-top: 28px;
  padding-top: 16px;
  border-top: 1px solid var(--home-line);
}

.home-beian a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  height: 17px;
  color: var(--home-muted);
  font-size: 12px;
  line-height: 17px;
}

.home-beian a:hover {
  color: var(--home-jade-deep);
}

.home-beian img,
.home-beian-icon {
  display: block;
  width: 16px;
  height: 17px;
  max-width: none;
  flex: 0 0 16px;
  object-fit: contain;
}

.home-copy {
  margin: 10px 0 0;
  font-size: 12px;
  color: var(--home-muted);
}

/* Responsive */

@media (max-width: 900px) {
  .home-hero-inner,
  .home-idea-grid,
  .home-pillar-grid,
  .home-method-list,
  .home-about-grid,
  .home-footer-grid {
    grid-template-columns: 1fr;
  }

  .home-hero-art {
    display: none;
  }

  .home-hero-inner {
    padding: 48px 0 40px;
  }

  .home-method-list {
    gap: 12px;
  }

  .home-method-list li,
  .home-pillar-grid article {
    padding: 18px 16px;
  }
}

@media (max-width: 760px) {
  :root {
    --home-header-h: 60px;
  }

  .home-shell,
  .home-hero-inner {
    width: min(var(--home-max), calc(100% - 32px));
  }

  .home-section {
    padding: 44px 0;
  }

  .home-nav-toggle {
    display: inline-flex;
  }

  .home-header-menus {
    display: none;
    position: absolute;
    top: calc(var(--home-header-h) + 8px);
    left: 50%;
    transform: translateX(-50%);
    width: min(var(--home-max), calc(100vw - 32px));
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    margin: 0;
    padding: 10px;
    background: #fff;
    border: 1px solid var(--home-line-solid);
    border-radius: 12px;
    box-shadow: 0 12px 32px rgba(30, 27, 75, 0.1);
    z-index: 51;
  }

  .home-header-inner.is-open .home-header-menus {
    display: flex;
  }

  .home-header-inner.is-open .home-nav {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
  }

  .home-header-inner.is-open .home-nav a {
    width: 100%;
    padding: 12px 10px;
  }
}

.xjb-toast-host {
  position: fixed;
  left: 50%;
  bottom: calc(20px + env(safe-area-inset-bottom, 0px));
  transform: translateX(-50%);
  z-index: 80;
  width: min(420px, calc(100vw - 32px));
  pointer-events: none;
  display: flex;
  justify-content: center;
}

.toast {
  pointer-events: auto;
  width: 100%;
  padding: 12px 16px;
  border-radius: 12px;
  border: 1px solid var(--home-line-solid);
  border-left-width: 4px;
  background: #fff;
  color: var(--home-ink);
  font-size: 0.92rem;
  font-weight: 600;
  line-height: 1.45;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.18s ease, transform 0.18s ease;
  cursor: pointer;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

.toast-success { border-left-color: var(--home-jade); }
.toast-error { border-left-color: var(--home-danger); }
.toast-warning { border-left-color: var(--home-gold); }
.toast-info { border-left-color: var(--home-teal-mid); }

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

  .home-hero-copy,
  .home-hero-notebook,
  .home-hero-notebook span {
    animation: none !important;
  }

  * {
    transition: none !important;
  }
}