/* 首页样式 V0.1 */

/* ---------- Hero ---------- */
.hero {
  padding: 76px 0 64px;
  background:
    radial-gradient(760px 420px at 78% 12%, rgba(181, 52, 43, .08), transparent 68%),
    radial-gradient(600px 360px at 12% 88%, rgba(47, 93, 98, .07), transparent 70%),
    linear-gradient(180deg, #fbf8f1 0%, var(--paper) 100%);
  overflow: hidden;
}
.hero-in { display: grid; grid-template-columns: 1.06fr .94fr; gap: 48px; align-items: center; }
@media (max-width: 900px) { .hero-in { grid-template-columns: 1fr; gap: 34px; } }
.hero h1 {
  font-size: 52px; line-height: 1.22; margin: 0 0 20px; letter-spacing: 1px;
  font-family: "Songti SC", "STSong", "SimSun", serif; font-weight: 700;
}
.hero-sub { font-size: 17px; color: var(--ink-2); margin: 0 0 30px; line-height: 1.9; }
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 16px; }
.hero-note { font-size: 13px; color: var(--ink-3); }
@media (max-width: 720px) {
  .hero { padding: 46px 0 44px; }
  .hero h1 { font-size: 34px; }
  .hero-sub { font-size: 15.5px; }
  .hero-visual { display: none; }
}

.hero-visual { display: grid; place-items: center; }
.grid-paper {
  position: relative; width: 100%; max-width: 400px; aspect-ratio: 1 / 1;
  background: #fbf8f1;
  border: 1px solid #d8d3c8; border-radius: 6px;
  box-shadow: 18px 18px 0 -1px var(--paper-2), 18px 18px 0 0 #d8d3c8, var(--shadow);
  transform: rotate(-1.4deg);
}
.gp-line { position: absolute; left: 8%; right: 8%; height: 1px; background: #d8d3c8; }
.gp-col { position: absolute; top: 8%; bottom: 8%; width: 1px; background: #d8d3c8; }
.gp-chars {
  position: absolute; inset: 12% 10%;
  display: grid; grid-template-columns: repeat(4, 1fr); grid-auto-rows: 1fr;
  place-items: center; gap: 4%;
}
.gp-chars span {
  font-family: "KaiTi", "STKaiti", "楷体", serif;
  font-size: clamp(26px, 5.6vw, 44px); color: #201e1a;
}
.gp-chars span:nth-child(odd) { color: #3d3a34; }
.gp-chars span:nth-child(3n) { color: #6e6a62; }

/* ---------- 数据条 ---------- */
.stats { padding: 30px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #f6f1e5; }
.stats-in { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; text-align: center; }
@media (max-width: 720px) { .stats-in { grid-template-columns: repeat(2, 1fr); gap: 22px; } }
.stats-in b { display: block; font-size: 30px; color: var(--cinnabar); font-family: Georgia, serif; letter-spacing: .5px; }
.stats-in span { font-size: 13.5px; color: var(--ink-3); }

/* ---------- AI 入口 ---------- */
.ai-entry { padding: 64px 0; }
.ai-card {
  display: grid; grid-template-columns: 1.15fr .85fr; gap: 44px; align-items: center;
  background: #f6f1e5; border: 1px solid var(--line); border-radius: 20px;
  padding: 44px; box-shadow: var(--shadow);
}
@media (max-width: 900px) { .ai-card { grid-template-columns: 1fr; padding: 26px; gap: 26px; } }
.ai-card h2 { font-size: 27px; margin: 0 0 14px; line-height: 1.45; }
.ai-card p { color: var(--ink-2); font-size: 15.5px; line-height: 1.9; margin: 0 0 16px; }
.ai-ul { list-style: none; padding: 0; margin: 0 0 26px; }
.ai-ul li {
  position: relative; padding-left: 24px; margin-bottom: 9px;
  font-size: 15px; color: var(--ink-2);
}
.ai-ul li::before {
  content: ""; position: absolute; left: 4px; top: 10px;
  width: 8px; height: 8px; border-radius: 3px; background: var(--cinnabar); opacity: .8;
}
.mini-report {
  background: linear-gradient(160deg, #fbf8f1, #f6f1e5);
  border: 1px solid #d8d3c8; border-radius: 14px; padding: 20px;
}
.mini-row { display: grid; grid-template-columns: 66px 1fr 34px; align-items: center; gap: 10px; margin-bottom: 12px; font-size: 13px; color: var(--ink-2); }
.mini-row i { display: block; height: 6px; border-radius: 999px; background: #d8d3c8; position: relative; }
.mini-row i::after {
  content: ""; position: absolute; inset: 0 auto 0 0; width: var(--w);
  background: var(--c); border-radius: 999px;
}
.mini-row b { font-size: 14px; text-align: right; font-variant-numeric: tabular-nums; }
.mini-total {
  margin-top: 16px; padding-top: 14px; border-top: 1px dashed #d8d3c8;
  font-size: 22px; font-weight: 700; color: var(--cinnabar);
}
.mini-total span { font-size: 13px; color: var(--ink-3); font-weight: 400; }
.mini-tip { font-size: 12px; color: var(--ink-3); text-align: center; margin-top: 10px; }

/* ---------- 课程 ---------- */
.courses-sec { background: var(--paper-2); }
.c-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
@media (max-width: 900px) { .c-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .c-grid { grid-template-columns: 1fr; } }
.c-card {
  background: #fbf8f1; border: 1px solid var(--line); border-radius: 14px; padding: 22px;
  transition: .22s transform, .22s box-shadow;
  opacity: 0; transform: translateY(14px);
}
.c-card.in { opacity: 1; transform: none; }
.c-card:hover { box-shadow: var(--shadow); }
.c-card.hot { border-color: #c29a5b; background: linear-gradient(180deg, #fbf8f1, #f6f1e5); }
.c-head { margin-bottom: 10px; }
.c-tag {
  display: inline-block; font-size: 12px; padding: 3px 10px; border-radius: 999px;
  background: rgba(47, 93, 98, .1); color: var(--jade); margin-bottom: 10px;
}
.c-card.hot .c-tag { background: rgba(181, 52, 43, .1); color: var(--cinnabar); }
.c-card h3 { margin: 0; font-size: 17px; }
.c-card p { margin: 0 0 14px; font-size: 14px; color: var(--ink-3); line-height: 1.85; }
.c-meta { font-size: 12.5px; color: #6e6a62; border-top: 1px dashed var(--line); padding-top: 11px; }
.c-more { text-align: center; margin-top: 28px; font-size: 13.5px; color: var(--ink-3); }

/* ---------- 关于 ---------- */
.about { padding: 68px 0; }
.about-in { display: grid; grid-template-columns: 1.2fr .8fr; gap: 48px; }
@media (max-width: 900px) { .about-in { grid-template-columns: 1fr; gap: 28px; } }
.about h2 { font-size: 27px; margin: 0 0 18px; }
.about-txt p { font-size: 15.5px; line-height: 2; color: var(--ink-2); margin: 0 0 16px; }
.about-points { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 26px; }
@media (max-width: 600px) { .about-points { grid-template-columns: 1fr; } }
.about-points > div {
  border-left: 3px solid var(--cinnabar); padding-left: 12px;
  opacity: 0; transform: translateX(-8px); transition: .4s;
}
.about-points > div.in { opacity: 1; transform: none; }
.about-points b { display: block; font-size: 15px; margin-bottom: 3px; }
.about-points span { font-size: 13px; color: var(--ink-3); line-height: 1.7; }
.about-side { display: grid; gap: 16px; align-content: start; }
.side-card {
  background: var(--paper); border: 1px solid var(--line); border-radius: 14px; padding: 20px;
  opacity: 0; transform: translateY(12px); transition: .45s;
}
.side-card.in { opacity: 1; transform: none; }
.side-card h4 { margin: 0 0 8px; font-size: 15.5px; color: var(--cinnabar); }
.side-card p { margin: 0; font-size: 14px; color: var(--ink-3); line-height: 1.85; }

/* ---------- 全新升级（华栋练字 → 华栋字能） ---------- */
.upgrade { padding: 66px 0; background: var(--paper-2); border-top: 1px solid var(--line); }
.upgrade h2 { font-size: 26px; margin: 0 0 12px; }
.up-lead { font-size: 15.5px; line-height: 2; color: var(--ink-2); margin: 0 0 26px; max-width: 780px; }
.up-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
@media (max-width: 900px) { .up-grid { grid-template-columns: 1fr; } }
.up-col { background: #fbf8f1; border: 1px solid var(--line); border-radius: 14px; padding: 24px 26px; }
.up-col h3 { margin: 0 0 14px; font-size: 17px; color: var(--cinnabar); }
.up-ul { list-style: none; padding: 0; margin: 0; }
.up-ul li {
  position: relative; padding-left: 20px; margin-bottom: 12px;
  font-size: 14.5px; line-height: 1.9; color: var(--ink-2);
}
.up-ul li::before {
  content: ""; position: absolute; left: 2px; top: 12px;
  width: 7px; height: 7px; border-radius: 2px; background: var(--gold); transform: rotate(45deg);
}
.up-ul b { color: var(--ink); margin-right: 6px; }

/* ---------- AI 伙伴 ---------- */
.aiteam { padding: 68px 0; }
.aiteam h2 { font-size: 27px; margin: 0 0 12px; }
.at-lead { font-size: 15.5px; line-height: 2; color: var(--ink-2); margin: 0 0 26px; max-width: 780px; }
.at-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
@media (max-width: 1100px) { .at-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 720px) { .at-grid { grid-template-columns: 1fr; } }
.at-card {
  background: #fbf8f1; border: 1px solid var(--line); border-radius: 14px; padding: 20px 18px;
  transition: .22s box-shadow, .22s transform;
}
.at-card:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.at-top { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; margin-bottom: 4px; }
.at-name {
  font-family: "Songti SC", "STSong", "SimSun", serif;
  font-size: 21px; font-weight: 700; letter-spacing: 1px;
}
.at-zi {
  font-size: 12px; color: var(--jade); background: rgba(47, 93, 98, .1);
  border-radius: 999px; padding: 2px 8px;
}
.at-role { font-size: 13.5px; color: var(--cinnabar); margin-bottom: 10px; }
.at-duty { font-size: 13.5px; line-height: 1.85; color: var(--ink-3); margin: 0 0 12px; }
.at-word {
  font-size: 13px; color: #6e6a62; border-top: 1px dashed var(--line); padding-top: 10px;
  font-family: "KaiTi", "STKaiti", "楷体", serif;
}
.at-note {
  margin: -14px 0 24px; max-width: 780px; font-size: 13.5px; line-height: 1.9; color: var(--ink-3);
  background: #f6f1e5; border-left: 3px solid var(--jade); border-radius: 0 8px 8px 0; padding: 10px 14px;
}
.at-rule {
  margin-top: 22px; background: #f6f1e5; border: 1px solid var(--line); border-radius: 12px;
  padding: 18px 20px; font-size: 14px; line-height: 2; color: var(--ink-2);
}
.at-rule b { color: var(--cinnabar); margin-right: 4px; }

/* ---------- 加盟 ---------- */
.partner { background: var(--ink); color: #fbf8f1; padding: 62px 0; }
.partner-in { display: grid; grid-template-columns: 1.2fr .8fr; gap: 44px; align-items: center; }
@media (max-width: 900px) { .partner-in { grid-template-columns: 1fr; gap: 28px; } }
.partner h2 { font-size: 26px; margin: 0 0 16px; color: #fbf8f1; }
.partner p { font-size: 15.5px; line-height: 2; color: #d8d3c8; margin: 0 0 26px; }
.partner-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; text-align: center; }
@media (max-width: 600px) { .partner-stats { grid-template-columns: 1fr; } }
.partner-stats > div { background: rgba(255, 255, 255, .05); border: 1px solid rgba(255, 255, 255, .1); border-radius: 12px; padding: 18px 10px; }
.partner-stats b { display: block; font-size: 19px; color: #c29a5b; margin-bottom: 4px; }
.partner-stats span { font-size: 12.5px; color: #d8d3c8; }

/* ---------- 联系 ---------- */
.contact { padding: 66px 0; background: var(--paper-2); }
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
@media (max-width: 800px) { .contact-grid { grid-template-columns: 1fr; } }
.contact-card {
  background: #fbf8f1; border: 1px solid var(--line); border-radius: 14px; padding: 24px;
  opacity: 0; transform: translateY(12px); transition: .4s;
  display: flex; flex-direction: column;
}
.contact-card.in { opacity: 1; transform: none; }
.contact-card h4 { margin: 0 0 10px; font-size: 16.5px; }
.contact-card p { margin: 0 0 18px; font-size: 14px; color: var(--ink-3); line-height: 1.85; }
.contact-card .btn { margin-top: auto; align-self: flex-start; }
.pending { font-size: 13px; color: #6e6a62; margin-top: auto; padding: 10px 12px; background: var(--paper); border-radius: 9px; }

@media (prefers-reduced-motion: reduce) {
  .c-card, .side-card, .contact-card, .about-points > div { opacity: 1 !important; transform: none !important; transition: none !important; }
}