/* ============ 崇磐修炼 · 官网样式 ============ */
:root {
  --ink: #1b1d21;        /* 玄黑 */
  --ink-soft: #33363c;
  --stone: #3f5a63;      /* 石青 */
  --stone-deep: #2c434b;
  --rock: #8b8f93;       /* 岩灰 */
  --rock-light: #c9cbcd;
  --paper: #f6f4ee;      /* 素白 */
  --paper-warm: #efece3;
  --gold: #b99a55;       /* 金砂 */
  --gold-soft: rgba(185, 154, 85, .18);
  --serif: "Songti SC", "Noto Serif SC", SimSun, "宋体", serif;
  --kai: "Kaiti SC", STKaiti, KaiTi, "楷体", "FangSong", "仿宋", var(--serif);
  --maxw: 1080px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--serif);
  background: var(--paper);
  color: var(--ink);
  letter-spacing: .04em;
  line-height: 1.9;
  font-size: 16px;
}
::selection { background: var(--gold-soft); }
a { color: var(--stone); text-decoration: none; }
a:hover { color: var(--stone-deep); }
h1, h2, h3, h4 { font-family: var(--kai); font-weight: 600; letter-spacing: .12em; color: var(--ink); }

/* ---------- 顶部导航 ---------- */
.topbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 90;
  background: rgba(246, 244, 238, .92); backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(27, 29, 33, .08);
  transition: box-shadow .4s;
}
.topbar.scrolled { box-shadow: 0 2px 18px rgba(27, 29, 33, .07); }
.topbar-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 0 20px;
  display: flex; align-items: center; gap: 14px; height: 64px;
}
.brand { display: flex; align-items: center; gap: 10px; cursor: pointer; }
.brand-mark {
  width: 34px; height: 34px; flex: none;
  color: var(--stone-deep);
}
.brand-name { font-family: var(--kai); font-size: 18px; letter-spacing: .16em; color: var(--ink); white-space: nowrap; }
.nav { display: flex; gap: 4px; flex: 1; flex-wrap: wrap; }
.nav a {
  font-family: var(--kai); font-size: 14px; letter-spacing: .08em;
  padding: 6px 7px; border-radius: 3px; color: var(--ink-soft);
  border-bottom: 2px solid transparent; white-space: nowrap;
}
.nav a.active { color: var(--stone-deep); border-bottom-color: var(--gold); }
.nav a:hover { background: rgba(63, 90, 99, .06); }
.langs { display: flex; gap: 2px; border: 1px solid rgba(27,29,33,.18); border-radius: 3px; overflow: hidden; }
.langs button {
  border: 0; background: transparent; cursor: pointer; padding: 4px 9px;
  font-family: var(--serif); font-size: 12.5px; color: var(--ink-soft); letter-spacing: .05em;
}
.langs button.on { background: var(--stone); color: var(--paper); }
.userbox { font-size: 12.5px; white-space: nowrap; color: var(--rock); white-space: nowrap; }
.userbox b { color: var(--stone-deep); font-weight: 600; }

/* ---------- 页面容器 ---------- */
.page { min-height: 100vh; padding-top: 64px; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
.section { padding-top: 72px; padding-bottom: 40px; }

/* ---------- 首页主视觉 ---------- */
.hero {
  position: relative; height: calc(100vh - 64px); min-height: 560px;
  display: flex; align-items: center; justify-content: center; overflow: hidden;
  background:
    radial-gradient(ellipse 90% 65% at 50% 112%, rgba(63, 90, 99, .35), transparent 62%),
    linear-gradient(178deg, #f6f4ee 0%, #eceade 52%, #dad8cd 100%);
}
.hero-canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-rocks { position: absolute; left: 0; right: 0; bottom: -2px; width: 100%; height: 46%; pointer-events: none; }
.hero-core { position: relative; text-align: center; z-index: 3; padding: 0 24px; transform: translateY(-4%); }
.hero-seal {
  width: 92px; height: 92px; margin: 0 auto 26px; color: var(--stone-deep);
  filter: drop-shadow(0 6px 14px rgba(44, 67, 75, .25));
}
.hero-title { font-size: 46px; letter-spacing: .42em; text-indent: .42em; color: var(--ink); }
.hero-motto {
  margin: 26px auto 0; max-width: 620px; font-family: var(--kai);
  font-size: 18.5px; color: var(--ink-soft); line-height: 2.2; letter-spacing: .1em;
}
.hero-motto::before, .hero-motto::after { content: "—"; color: var(--gold); margin: 0 .8em; }
.hero-actions { margin-top: 40px; display: flex; gap: 18px; justify-content: center; }
.btn {
  display: inline-block; cursor: pointer; font-family: var(--kai);
  padding: 10px 30px; font-size: 15.5px; letter-spacing: .22em; text-indent: .1em;
  border: 1px solid var(--stone-deep); color: var(--stone-deep); background: transparent;
  border-radius: 2px; transition: all .35s;
}
.btn:hover { background: var(--stone-deep); color: var(--paper); }
.btn.gold { border-color: var(--gold); color: #8d743c; }
.btn.gold:hover { background: var(--gold); color: #fff; }
.btn.solid { background: var(--stone-deep); color: var(--paper); }
.hero-scrollhint {
  position: absolute; bottom: 26px; left: 50%; transform: translateX(-50%);
  color: var(--rock); font-size: 12px; letter-spacing: .3em; writing-mode: vertical-rl;
  animation: drift 2.6s ease-in-out infinite; z-index: 3;
}
@keyframes drift { 0%,100% { transform: translate(-50%, 0); } 50% { transform: translate(-50%, 8px); } }

/* 竖排题签 */
.vtag {
  writing-mode: vertical-rl; font-family: var(--kai); letter-spacing: .38em;
  color: var(--paper); background: var(--stone-deep); padding: 14px 7px 20px;
  border-radius: 2px; font-size: 15px; box-shadow: 2px 3px 0 var(--gold-soft);
  align-self: flex-start; flex: none;
}
html[data-lang="en"] .vtag { writing-mode: horizontal-tb; letter-spacing: .18em; padding: 7px 16px; }

/* ---------- 通用版块 ---------- */
.sec-head { display: flex; align-items: baseline; gap: 18px; margin-bottom: 34px; }
.sec-title { font-size: 28px; letter-spacing: .24em; }
.sec-title small { display: block; font-size: 12.5px; color: var(--rock); letter-spacing: .28em; margin-top: 6px; font-family: var(--serif); }
.sec-rule { flex: 1; height: 1px; background: linear-gradient(90deg, rgba(27,29,33,.22), transparent); position: relative; top: -6px; }
.ridge { width: 100%; height: 26px; margin: 8px 0 2px; color: rgba(63,90,99,.4); }

.prose { max-width: 760px; }
.prose p { margin: 0 0 1.2em; text-align: justify; }
.prose-full p { margin: 0 0 1.25em; text-align: justify; }
.muted { color: var(--rock); }
.note {
  background: var(--paper-warm); border-left: 3px solid var(--gold);
  padding: 14px 20px; margin: 20px 0; font-size: 14.5px; color: var(--ink-soft);
}
.note b { color: #8d743c; }

/* 卡片 */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 18px; }
.card {
  background: #fff; border: 1px solid rgba(27,29,33,.09); border-radius: 4px;
  padding: 26px 24px; position: relative; overflow: hidden;
  transition: transform .35s, box-shadow .35s;
}
.card::after {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--stone), transparent 70%); opacity: .55;
}
.card:hover { transform: translateY(-5px); box-shadow: 0 14px 30px rgba(27, 29, 33, .1); }
.card h3 { font-size: 19px; margin-bottom: 10px; letter-spacing: .16em; }
.card p { font-size: 14px; color: var(--ink-soft); line-height: 1.9; }
.card .tag {
  position: absolute; top: 14px; right: 14px; font-size: 11.5px; color: #8d743c;
  border: 1px solid var(--gold); border-radius: 2px; padding: 1px 8px; letter-spacing: .2em;
}

/* 渐显 */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .9s ease, transform .9s ease; }
.reveal.shown { opacity: 1; transform: none; }

/* ---------- 境界阶梯（视差） ---------- */
.realms-scene { position: relative; }
.realm-layer {
  position: relative; min-height: 46vh; display: flex; align-items: center;
  border-bottom: 1px solid rgba(27,29,33,.05); overflow: hidden;
}
.realm-inner { position: relative; z-index: 2; max-width: var(--maxw); margin: 0 auto; padding: 60px 20px; width: 100%; display: flex; gap: 34px; align-items: flex-start; }
.realm-bg {
  position: absolute; inset: -12% 0; z-index: 1; opacity: .5;
  background-repeat: no-repeat; background-position: center; background-size: cover;
  will-change: transform; pointer-events: none;
}
.realm-step { font-family: var(--kai); color: var(--rock); font-size: 13px; letter-spacing: .3em; margin-bottom: 8px; }
.realm-name { font-size: 34px; letter-spacing: .2em; margin-bottom: 4px; }
.realm-name .en-sub { display: block; font-size: 13px; color: var(--rock); letter-spacing: .12em; font-family: var(--serif); margin-top: 4px; }
.realm-title { color: #8d743c; font-family: var(--kai); font-size: 16px; letter-spacing: .2em; margin-bottom: 12px; }
.realm-detail { max-width: 640px; font-size: 15px; color: var(--ink-soft); text-align: justify; }
.realm-nameonly { color: var(--rock); font-family: var(--kai); font-size: 14px; letter-spacing: .2em; }
.realm-layer.dark { background: linear-gradient(180deg, #23262b, #2c3138); }
.realm-layer.dark .realm-name, .realm-layer.dark .realm-detail { color: #d8d5cc; }
.realm-layer.dark .realm-step { color: #8f949a; }

/* ---------- 课程 ---------- */
.course-cat { margin-bottom: 46px; }
.course-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 18px; margin-top: 18px; }
.course-card { cursor: pointer; }
.course-card .order { font-size: 12px; color: var(--rock); letter-spacing: .26em; margin-bottom: 6px; }
.course-card.open { border-color: var(--stone); }
.course-detail { display: none; margin-top: 14px; border-top: 1px dashed rgba(27,29,33,.15); padding-top: 14px; }
.course-card.open .course-detail { display: block; }
.effects { list-style: none; margin-top: 10px; }
.effects li { padding: 7px 0 7px 2px; font-size: 13.8px; border-bottom: 1px dotted rgba(27,29,33,.1); }
.effects b { color: var(--stone-deep); font-family: var(--kai); letter-spacing: .12em; margin-right: 8px; }

/* ---------- 文库 ---------- */
.lib-tools { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-bottom: 26px; }
.lib-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.lib-tags button {
  cursor: pointer; border: 1px solid rgba(27,29,33,.2); background: transparent;
  font-family: var(--kai); letter-spacing: .14em; padding: 5px 14px; border-radius: 20px;
  color: var(--ink-soft); font-size: 13.5px;
}
.lib-tags button.on { background: var(--stone-deep); color: var(--paper); border-color: var(--stone-deep); }
.lib-search { flex: 1; min-width: 220px; display: flex; }
.lib-search input {
  flex: 1; padding: 8px 14px; border: 1px solid rgba(27,29,33,.2); border-radius: 3px 0 0 3px;
  font-family: var(--serif); font-size: 14px; background: #fff; outline: none;
}
.lib-search input:focus { border-color: var(--stone); }
.lib-search button { border: 1px solid var(--stone-deep); background: var(--stone-deep); color: var(--paper); padding: 0 18px; cursor: pointer; border-radius: 0 3px 3px 0; font-family: var(--kai); }
.masonry { column-count: 3; column-gap: 18px; }
@media (max-width: 900px) { .masonry { column-count: 2; } }
@media (max-width: 620px) { .masonry { column-count: 1; } }
.m-item { break-inside: avoid; margin-bottom: 18px; cursor: pointer; }
.m-item .cat { font-size: 11.5px; letter-spacing: .24em; color: #8d743c; margin-bottom: 8px; }
.m-item .excerpt { font-size: 13.5px; color: var(--ink-soft); }
.m-item mark { background: var(--gold-soft); color: #6d5426; padding: 0 2px; }

.m-thumb { margin: -26px -24px 14px; overflow: hidden; max-height: 150px; }
.m-thumb img { width: 100%; display: block; object-fit: cover; filter: saturate(.85); }
.art-fig { margin: 1.4em 0; text-align: center; }
.art-fig img { max-width: min(100%, 640px); border-radius: 4px; box-shadow: 0 6px 22px rgba(27,29,33,.12); }

/* 文章页 */
.article-head { border-bottom: 1px solid rgba(27,29,33,.12); padding-bottom: 22px; margin-bottom: 30px; }
.article-cat { color: #8d743c; letter-spacing: .3em; font-size: 13px; font-family: var(--kai); }
.article-title { font-size: 32px; letter-spacing: .18em; margin-top: 8px; }
.article-body { max-width: 780px; font-size: 15.8px; }
.article-body p { margin-bottom: 1.35em; text-align: justify; }
.backlink { display: inline-block; margin: 26px 0; font-family: var(--kai); letter-spacing: .14em; }

/* ---------- 联系 ---------- */
.contact-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px; }
.contact-line { display: flex; gap: 12px; padding: 8px 0; border-bottom: 1px dotted rgba(27,29,33,.12); font-size: 14.5px; }
.contact-line span:first-child { color: var(--rock); flex: none; width: 74px; }
.contact-warn { margin-top: 12px; font-size: 13px; color: #9c5c34; }

/* ---------- 论坛 ---------- */
.forum-note { font-size: 13.5px; }
.board-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 18px; }
.board-card { cursor: pointer; }
.board-stats { margin-top: 12px; font-size: 12.5px; color: var(--rock); display: flex; gap: 18px; }
.thread-row {
  background: #fff; border: 1px solid rgba(27,29,33,.08); border-radius: 4px;
  padding: 16px 20px; margin-bottom: 12px; cursor: pointer; transition: box-shadow .3s;
}
.thread-row:hover { box-shadow: 0 8px 22px rgba(27,29,33,.08); }
.thread-row h4 { font-size: 16.5px; letter-spacing: .08em; }
.thread-meta { margin-top: 6px; font-size: 12.5px; color: var(--rock); display: flex; gap: 16px; flex-wrap: wrap; }
.lvl {
  display: inline-block; font-size: 11px; border: 1px solid var(--gold); color: #8d743c;
  padding: 0 6px; border-radius: 2px; letter-spacing: .12em; margin-left: 6px; font-family: var(--kai);
}
.post {
  background: #fff; border: 1px solid rgba(27,29,33,.08); border-radius: 4px;
  padding: 20px 24px; margin-bottom: 16px;
}
.post-head { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; font-size: 13.5px; color: var(--rock); flex-wrap: wrap; }
.post-head b { color: var(--stone-deep); font-size: 14.5px; }
.post-body { font-size: 14.8px; }
.post-body p { margin-bottom: .9em; }
.post-actions { margin-top: 12px; display: flex; gap: 16px; font-size: 13px; }
.post-actions a { color: var(--rock); cursor: pointer; }
.post-actions a:hover { color: var(--stone-deep); }
.post-actions a.on { color: #8d743c; }
.subposts { margin-top: 14px; border-left: 2px solid var(--paper-warm); padding-left: 16px; }
.subpost { padding: 10px 0; border-bottom: 1px dotted rgba(27,29,33,.1); font-size: 13.8px; }
.subpost .who { color: var(--stone-deep); font-weight: 600; margin-right: 8px; }
.pending {
  background: repeating-linear-gradient(45deg, #faf7ef, #faf7ef 12px, #f4efe2 12px, #f4efe2 24px);
  border: 1px dashed var(--gold); color: #8d743c; padding: 14px 18px; border-radius: 4px;
  margin-bottom: 16px; font-size: 13.5px;
}
.forum-toolbar { display: flex; gap: 12px; margin: 18px 0 24px; flex-wrap: wrap; align-items: center; }
.forum-toolbar .spacer { flex: 1; }
textarea.input, input.input {
  width: 100%; padding: 10px 14px; border: 1px solid rgba(27,29,33,.2); border-radius: 3px;
  font-family: var(--serif); font-size: 14.5px; background: #fff; outline: none; letter-spacing: .03em;
}
textarea.input { min-height: 120px; resize: vertical; line-height: 1.8; }
textarea.input:focus, input.input:focus { border-color: var(--stone); }
.form-row { margin-bottom: 14px; }
.form-row label { display: block; font-size: 13px; color: var(--rock); margin-bottom: 6px; letter-spacing: .1em; }
.modal-mask { position: fixed; inset: 0; background: rgba(27,29,33,.45); z-index: 200; display: flex; align-items: center; justify-content: center; }
.modal { background: var(--paper); border-radius: 6px; padding: 34px 36px; width: min(440px, 92vw); position: relative; }
.modal h3 { letter-spacing: .2em; margin-bottom: 20px; }
.modal .close { position: absolute; top: 14px; right: 18px; cursor: pointer; color: var(--rock); font-size: 20px; }
.form-err { color: #a2452c; font-size: 13px; margin-top: 8px; min-height: 18px; }
.rules-box { font-size: 13px; color: var(--ink-soft); background: var(--paper-warm); border-radius: 4px; padding: 14px 18px; margin-bottom: 18px; }
.rules-box b { color: #8d743c; }

/* ---------- 页脚 ---------- */
footer {
  margin-top: 70px; background: var(--ink); color: #a7a9ab; padding: 44px 0 30px;
  font-size: 13px; letter-spacing: .06em;
}
footer .wrap { display: flex; flex-wrap: wrap; gap: 30px; align-items: flex-start; }
footer .f-brand { font-family: var(--kai); color: #d8d5cc; font-size: 18px; letter-spacing: .3em; margin-bottom: 10px; }
footer .f-note { max-width: 480px; line-height: 2; }
footer .f-ref { color: var(--gold); }
footer nav { display: flex; flex-direction: column; gap: 6px; }
footer nav a { color: #a7a9ab; font-size: 13px; }
footer nav a:hover { color: #d8d5cc; }
.f-bottom { border-top: 1px solid rgba(255,255,255,.08); margin-top: 30px; padding-top: 18px; text-align: center; color: #6f7275; font-size: 12px; }

/* 响应式 */
.nav-burger {
  display: none; border: 1px solid rgba(27,29,33,.2); background: transparent;
  border-radius: 3px; width: 36px; height: 31px; cursor: pointer;
  color: var(--ink-soft); font-size: 15px; line-height: 1; flex: none; padding: 0;
}
@media (max-width: 900px) {
  .topbar-inner { height: 54px; gap: 8px; padding: 0 12px; flex-wrap: nowrap; }
  .brand { flex: 1; min-width: 0; gap: 7px; }
  .brand-mark { width: 26px; height: 26px; }
  .brand-name { font-size: 15.5px; letter-spacing: .1em; }
  .nav { display: none; }
  .nav.open {
    display: flex; flex-direction: column; position: absolute; top: 54px; left: 0; right: 0;
    background: rgba(246, 244, 238, .98); backdrop-filter: blur(8px); gap: 0;
    border-bottom: 1px solid rgba(27,29,33,.1); box-shadow: 0 16px 30px rgba(27,29,33,.14);
    padding: 6px 12px 12px;
  }
  .nav.open a { padding: 12px 8px; font-size: 15.5px; border-bottom: 1px solid rgba(27,29,33,.06); border-radius: 0; }
  .nav.open a.active { border-bottom-color: var(--gold); }
  .nav-burger { display: block; }
  .userbox { font-size: 11.5px; }
  .langs button { padding: 3px 7px; font-size: 11.5px; }
  .page { padding-top: 54px; }
  .section { padding-top: 44px; padding-bottom: 26px; }
  .sec-head { gap: 12px; margin-bottom: 22px; }
  .sec-title { font-size: 22px; letter-spacing: .16em; }
  .hero { height: auto; min-height: 0; padding: 74px 0 100px; }
  .hero-seal { width: 72px; height: 72px; margin-bottom: 18px; }
  .hero-title { font-size: 30px; letter-spacing: .3em; text-indent: .3em; }
  .hero-motto { font-size: 15.5px; line-height: 2.1; margin-top: 18px; }
  .hero-motto::before, .hero-motto::after { margin: 0 .3em; }
  .hero-actions { margin-top: 28px; gap: 12px; flex-wrap: wrap; }
  .btn { padding: 9px 20px; font-size: 14px; letter-spacing: .16em; }
  .vtag { writing-mode: horizontal-tb; letter-spacing: .22em; padding: 6px 14px; font-size: 13.5px; }
  .realm-inner { flex-direction: column; gap: 8px; padding: 42px 20px; }
  .realm-layer { min-height: 34vh; }
  .realm-name { font-size: 25px; }
  .realm-detail { font-size: 14px; }
  .article-title { font-size: 23px; letter-spacing: .1em; }
  .article-body { font-size: 15px; }
  .card { padding: 20px 18px; }
  .m-thumb { margin: -20px -18px 12px; }
  .post { padding: 16px 14px; }
  .modal { padding: 26px 20px; }
  .forum-toolbar { gap: 8px; }
  footer .wrap { flex-direction: column; gap: 22px; }
  footer nav { flex-direction: row; flex-wrap: wrap; gap: 4px 14px; }
}
@media print { .topbar, footer, .hero-canvas { display: none; } }