/* 远见研习 — ICP 备案站点全局样式 */
:root {
  --ink: #10241c;
  --ink-soft: #1a3328;
  --forest: #245c45;
  --teal: #1f7a62;
  --mist: #e6eee9;
  --paper: #f3f6f4;
  --line: #c9d6cf;
  --muted: #5a6f64;
  --amber: #b7791f;
  --amber-soft: #f3e6c8;
  --danger: #a33b2c;
  --white: #ffffff;
  --shadow: 0 18px 50px rgba(16, 36, 28, 0.08);
  --radius: 14px;
  --font-display: "Noto Serif SC", "Songti SC", serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", sans-serif;
  --max: 1120px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(31, 122, 98, 0.14), transparent 55%),
    radial-gradient(900px 500px at 100% 0%, rgba(183, 121, 31, 0.1), transparent 50%),
    linear-gradient(180deg, #eef4f0 0%, var(--paper) 40%, #e9f0eb 100%);
  line-height: 1.7;
}

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

a {
  color: var(--teal);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(14px);
  background: rgba(243, 246, 244, 0.86);
  border-bottom: 1px solid rgba(201, 214, 207, 0.7);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 0.55rem;
  color: var(--ink);
  text-decoration: none;
}

.brand:hover {
  text-decoration: none;
}

.brand-mark {
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.brand-en {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--muted);
  text-transform: uppercase;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
  align-items: center;
  justify-content: flex-end;
}

.nav a {
  color: var(--ink-soft);
  font-size: 0.95rem;
  text-decoration: none;
}

.nav a:hover,
.nav a.active {
  color: var(--teal);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 0.65rem 1.25rem;
  font: inherit;
  font-size: 0.95rem;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
  text-decoration: none;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--ink);
  color: var(--white);
  box-shadow: 0 10px 24px rgba(16, 36, 28, 0.18);
}

.btn-primary:hover {
  background: var(--forest);
  color: var(--white);
}

.btn-secondary {
  background: transparent;
  border-color: var(--line);
  color: var(--ink);
}

.btn-secondary:hover {
  border-color: var(--teal);
  color: var(--teal);
}

.btn-amber {
  background: var(--amber);
  color: var(--white);
}

.btn-amber:hover {
  background: #9a6618;
  color: var(--white);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.18);
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.35);
}

.btn-block {
  width: 100%;
}

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  min-height: min(88vh, 720px);
  display: grid;
  align-items: end;
  color: var(--white);
  background:
    linear-gradient(120deg, rgba(16, 36, 28, 0.88) 18%, rgba(16, 36, 28, 0.45) 58%, rgba(31, 122, 98, 0.25) 100%),
    url("../assets/hero.svg") center/cover no-repeat,
    linear-gradient(135deg, #10241c, #245c45 55%, #1f7a62);
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 120px;
  background: linear-gradient(transparent, var(--paper));
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  padding: 6.5rem 0 4.5rem;
  max-width: 640px;
  animation: rise 0.9s ease both;
}

.hero-kicker {
  display: inline-block;
  margin-bottom: 1rem;
  font-size: 0.8rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--amber-soft);
}

.hero h1 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: 0.02em;
}

.hero p {
  margin: 0 0 1.75rem;
  font-size: 1.08rem;
  color: rgba(255, 255, 255, 0.86);
  max-width: 34em;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fade-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.reveal {
  animation: rise 0.7s ease both;
}

/* Sections */
.section {
  padding: 4.5rem 0;
}

.section-tight {
  padding: 3rem 0;
}

.section-head {
  max-width: 40rem;
  margin-bottom: 2rem;
}

.section-head h2 {
  margin: 0 0 0.6rem;
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3vw, 2.2rem);
  line-height: 1.25;
}

.section-head p {
  margin: 0;
  color: var(--muted);
}

.panel {
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(201, 214, 207, 0.8);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

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

.service-item {
  padding: 1.5rem;
  background: rgba(255, 255, 255, 0.7);
  border-top: 3px solid var(--teal);
  border-radius: 0 0 var(--radius) var(--radius);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.service-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.service-item h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
}

.service-item p {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.price-tag {
  display: inline-block;
  margin-bottom: 0.85rem;
  padding: 0.2rem 0.65rem;
  border-radius: 999px;
  background: var(--amber-soft);
  color: #7a5214;
  font-size: 0.82rem;
  font-weight: 600;
}

.feature-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  overflow: hidden;
  background: var(--line);
}

.feature-strip article {
  padding: 1.5rem;
  background: var(--white);
}

.feature-strip h3 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
}

.feature-strip p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

/* Page banner */
.page-banner {
  padding: 3.5rem 0 2rem;
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(36, 92, 69, 0.08), transparent),
    transparent;
}

.page-banner h1 {
  margin: 0 0 0.6rem;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
}

.page-banner p {
  margin: 0;
  color: var(--muted);
  max-width: 40rem;
}

/* Legal / content prose */
.prose {
  padding: 2rem;
}

.prose h2 {
  margin: 2rem 0 0.8rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
}

.prose h2:first-child {
  margin-top: 0;
}

.prose h3 {
  margin: 1.4rem 0 0.5rem;
  font-size: 1.05rem;
}

.prose p,
.prose li {
  color: var(--ink-soft);
}

.prose ul,
.prose ol {
  padding-left: 1.2rem;
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.95rem;
}

.prose th,
.prose td {
  border: 1px solid var(--line);
  padding: 0.7rem 0.8rem;
  text-align: left;
}

.prose th {
  background: var(--mist);
}

.meta-note {
  margin-top: 1.5rem;
  padding: 0.9rem 1rem;
  border-left: 3px solid var(--teal);
  background: var(--mist);
  color: var(--muted);
  font-size: 0.9rem;
}

/* Pricing cards */
.price-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.price-card {
  padding: 1.6rem;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.price-card.featured {
  border-color: var(--teal);
  background:
    linear-gradient(180deg, rgba(31, 122, 98, 0.08), transparent 40%),
    rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow);
}

.price-card h3 {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
}

.price-amount {
  margin: 0.8rem 0;
  font-size: 2rem;
  font-weight: 700;
  color: var(--ink);
}

.price-amount span {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--muted);
}

.price-card ul {
  margin: 0 0 1.2rem;
  padding-left: 1.1rem;
  color: var(--muted);
}

/* Auth */
.auth-layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 1.5rem;
  align-items: stretch;
  padding: 2.5rem 0 4rem;
}

.auth-side {
  padding: 2rem;
  color: var(--white);
  background:
    linear-gradient(145deg, rgba(16, 36, 28, 0.92), rgba(36, 92, 69, 0.85)),
    url("../assets/hero.svg") center/cover;
  border-radius: var(--radius);
  min-height: 420px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.auth-side h2 {
  margin: 0 0 0.6rem;
  font-family: var(--font-display);
  font-size: 1.8rem;
}

.auth-side p {
  margin: 0;
  color: rgba(255, 255, 255, 0.82);
}

.auth-card {
  padding: 2rem;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.75rem 0.9rem;
  font: inherit;
  background: var(--white);
  color: var(--ink);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: 2px solid rgba(31, 122, 98, 0.35);
  border-color: var(--teal);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.6rem;
  align-items: end;
}

.checkbox {
  display: flex;
  gap: 0.55rem;
  align-items: flex-start;
  margin: 1rem 0 1.2rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.checkbox input {
  margin-top: 0.25rem;
}

.form-tip,
.form-error,
.form-success {
  margin: 0.6rem 0 0;
  font-size: 0.88rem;
}

.form-tip {
  color: var(--muted);
}

.form-error {
  color: var(--danger);
}

.form-success {
  color: var(--teal);
}

.user-chip {
  display: none;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  background: var(--mist);
  font-size: 0.85rem;
  color: var(--ink-soft);
}

.user-chip.is-visible {
  display: inline-flex;
}

/* Content list */
.content-list {
  display: grid;
  gap: 0.85rem;
}

.content-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1rem;
  align-items: center;
  padding: 1.2rem 1.3rem;
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid var(--line);
  border-radius: 12px;
}

.content-item h3 {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
}

.content-item p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.lock-badge {
  font-size: 0.8rem;
  color: #7a5214;
  background: var(--amber-soft);
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
}

.lock-badge-btn {
  display: inline-flex;
  align-items: center;
  border: 1px solid transparent;
  font: inherit;
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
}

.lock-badge-btn:hover {
  border-color: rgba(183, 121, 31, 0.45);
  box-shadow: 0 4px 14px rgba(183, 121, 31, 0.18);
  transform: translateY(-1px);
}

.lock-badge-btn:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

/* Pay modal */
.pay-modal {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: none;
  place-items: center;
  padding: 1rem;
}

.pay-modal.is-open {
  display: grid;
}

.pay-modal[hidden] {
  display: none !important;
}

.pay-modal.is-open:not([hidden]) {
  display: grid;
}

.pay-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(16, 36, 28, 0.48);
  backdrop-filter: blur(2px);
}

.pay-modal-dialog {
  position: relative;
  z-index: 1;
  width: min(100%, 360px);
  padding: 1.6rem 1.4rem 1.4rem;
  border-radius: 16px;
  background: var(--white);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  text-align: center;
}

.pay-modal-close {
  position: absolute;
  top: 0.55rem;
  right: 0.7rem;
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
}

.pay-modal-close:hover {
  color: var(--ink);
}

.pay-modal-dialog h2 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
}

.pay-modal-item {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.pay-modal-amount {
  margin: 0.55rem 0 1rem;
  font-size: 1rem;
}

.pay-modal-amount strong {
  color: var(--amber);
  font-size: 1.35rem;
}

.pay-qr-wrap {
  display: grid;
  place-items: center;
  margin: 0 auto 0.9rem;
  width: 200px;
  height: 200px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fafcfb;
}

.pay-qr-wrap img {
  width: 180px;
  height: 180px;
}

.pay-modal-hint {
  margin: 0;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.55;
}

/* Community */
.comment-box {
  padding: 1.5rem;
  margin-bottom: 1rem;
}

.comment-list {
  display: grid;
  gap: 0.8rem;
}

.comment {
  padding: 1rem 1.15rem;
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid var(--line);
  border-radius: 12px;
}

.comment-meta {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.4rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.comment-status {
  color: var(--amber);
}

.comment-status.approved {
  color: var(--teal);
}

/* Footer */
.site-footer {
  margin-top: 2rem;
  padding: 2.5rem 0 2rem;
  background: var(--ink);
  color: rgba(255, 255, 255, 0.78);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

.site-footer h3 {
  margin: 0 0 0.8rem;
  color: var(--white);
  font-family: var(--font-display);
  font-size: 1.1rem;
}

.site-footer p,
.site-footer li {
  margin: 0 0 0.45rem;
  font-size: 0.92rem;
}

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

.site-footer a {
  color: rgba(255, 255, 255, 0.78);
}

.site-footer a:hover {
  color: var(--amber-soft);
}

.footer-legal {
  padding-top: 1.2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 0.88rem;
  text-align: center;
}

.footer-legal a {
  color: var(--amber-soft);
}

.mobile-nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: var(--white);
  border-radius: 8px;
  padding: 0.45rem 0.7rem;
  font: inherit;
}

@media (max-width: 900px) {
  .service-grid,
  .price-grid,
  .feature-strip,
  .footer-grid,
  .auth-layout {
    grid-template-columns: 1fr;
  }

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

  .nav {
    display: none;
    width: 100%;
    padding: 0.5rem 0 0.8rem;
  }

  .nav.is-open {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
  }

  .header-inner {
    flex-wrap: wrap;
  }

  .content-item {
    grid-template-columns: 1fr;
  }
}