/* =========================================================
   丝路上的回响 · Echo on the Silk Road
   新中式极简国风 + 轻国际简约 · 静态交互式网页
   ========================================================= */

:root{
  /* 主色调：丝路驼砂米白 / 敦煌青黛 / 丝路绛红 */
  --sand-50:#FBF8F2;
  --sand-100:#F6F0E6;
  --sand-200:#EFE7D8;
  --sand-300:#E3D7C1;
  --tint:#2C4448;          /* 敦煌青黛 */
  --tint-deep:#203638;
  --tint-soft:#4C6C6E;
  --red:#A03A31;           /* 丝路绛红 */
  --red-deep:#8A322A;
  --celadon:#A9C3BC;       /* 浅青瓷 */
  --gold:#C9A44C;          /* 鎏金浅黄 */
  --gold-light:#E0C684;
  --gold-deep:#9C7C36;

  --ink:#33312C;
  --ink-soft:#6E685C;
  --ink-faint:#9A9384;
  --line:rgba(44,68,72,.14);
  --line-soft:rgba(44,68,72,.08);

  --serif-zh:"Noto Serif SC","Songti SC","STSong",SimSun,serif;
  --serif-en:"Source Serif 4","Source Serif Pro",Georgia,"Times New Roman",serif;
  --serif:var(--serif-zh);

  --radius:20px;
  --radius-sm:14px;
  --shadow-sm:0 6px 20px rgba(44,68,72,.06);
  --shadow-md:0 14px 40px rgba(44,68,72,.10);
  --shadow-lg:0 26px 70px rgba(44,68,72,.16);
  --ease:cubic-bezier(.22,.68,.24,1);
  --maxw:1180px;
}

*{box-sizing:border-box;}
html{scroll-behavior:auto;}
body{
  margin:0;
  font-family:var(--serif);
  color:var(--ink);
  background:var(--sand-50);
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow:hidden;height:100vh;height:100svh;
}
img,svg{display:block;max-width:100%;}
button{font-family:inherit;color:inherit;}
a{color:inherit;text-decoration:none;}
::selection{background:rgba(201,164,76,.28);}

/* 全局低透明度丝路纹样肌理 */
.pattern-overlay{
  position:fixed;inset:0;pointer-events:none;z-index:0;opacity:.5;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140' viewBox='0 0 140 140'%3E%3Cg fill='none' stroke='%232C4448' stroke-width='1'%3E%3Ccircle cx='35' cy='35' r='15' opacity='.10'/%3E%3Ccircle cx='35' cy='35' r='4' opacity='.14'/%3E%3Ccircle cx='105' cy='105' r='15' opacity='.10'/%3E%3Ccircle cx='105' cy='105' r='4' opacity='.14'/%3E%3C/g%3E%3C/svg%3E");
  background-size:140px 140px;
}

/* ---------------- 顶部导航 ---------------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:10px clamp(18px,4vw,54px);
  background:rgba(251,248,242,.84);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:0 1px 0 var(--line-soft);
}
.brand{display:flex;align-items:center;gap:12px;background:none;border:none;padding:0;cursor:pointer;}
.brand-mark{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(145deg,var(--tint),var(--tint-deep));
  color:var(--gold-light);font-size:1.25rem;font-weight:600;
  box-shadow:inset 0 0 0 1px rgba(201,164,76,.45),0 6px 18px rgba(32,54,56,.22);
  transition:transform .4s var(--ease);
}
.brand:hover .brand-mark{transform:translateY(-2px) rotate(-4deg);}
.brand-text{display:flex;flex-direction:column;line-height:1.2;align-items:flex-start;}
.brand-text em{font-style:normal;font-size:1rem;font-weight:600;letter-spacing:.08em;color:var(--tint-deep);}
.brand-text small{font-family:var(--serif-en);font-size:.66rem;letter-spacing:.14em;color:var(--ink-faint);text-transform:uppercase;}

.site-nav{display:flex;gap:clamp(14px,2.4vw,34px);}
.site-nav button{
  position:relative;font-size:.94rem;letter-spacing:.06em;color:var(--ink-soft);
  padding:6px 2px;background:none;border:none;cursor:pointer;
  transition:color .3s var(--ease);
}
.site-nav button::after{
  content:"";position:absolute;left:0;right:100%;bottom:0;height:1px;
  background:linear-gradient(90deg,var(--gold),var(--red));transition:right .35s var(--ease);
}
.site-nav button:hover{color:var(--tint-deep);}
.site-nav button:hover::after{right:0;}
.site-nav button.active{color:var(--tint-deep);font-weight:600;}
.site-nav button.active::after{right:0;}

.lang-toggle{
  display:flex;align-items:center;gap:2px;padding:3px;border-radius:999px;
  border:1px solid var(--line);background:rgba(255,255,255,.55);
}
.lang-toggle button{
  border:none;background:transparent;cursor:pointer;border-radius:999px;
  padding:6px 14px;font-size:.82rem;letter-spacing:.05em;color:var(--ink-soft);
  transition:all .3s var(--ease);font-family:var(--serif-en);
}
.lang-toggle button.active{
  background:linear-gradient(135deg,var(--tint),var(--tint-deep));
  color:var(--gold-light);box-shadow:0 4px 12px rgba(32,54,56,.24);
}

/* ---------------- 整页切换容器 ---------------- */
.deck{position:relative;width:100%;height:100vh;height:100svh;overflow:hidden;}
.page{
  position:absolute;inset:0;overflow-y:auto;overflow-x:hidden;
  -webkit-overflow-scrolling:touch;
  opacity:0;visibility:hidden;pointer-events:none;transform:translateX(0);
  transition:opacity .62s var(--ease),transform .62s var(--ease),visibility .62s var(--ease);
}
.page::-webkit-scrollbar{width:8px;}
.page::-webkit-scrollbar-thumb{background:rgba(201,164,76,.42);border-radius:8px;}
.page.active{opacity:1;visibility:visible;pointer-events:auto;transform:translateX(0);}
.page.enter-right,.page.enter-left{visibility:visible;}
.page.enter-right{transform:translateX(5%);opacity:0;}
.page.enter-left{transform:translateX(-5%);opacity:0;}
.page.leave-left{transform:translateX(-5%);opacity:0;visibility:visible;}
.page.leave-right{transform:translateX(5%);opacity:0;visibility:visible;}

/* 页面指示器 */
.page-dots{
  display:flex;align-items:center;gap:11px;
}
.page-dots button{
  position:relative;width:11px;height:11px;padding:0;border-radius:50%;cursor:pointer;
  border:1px solid rgba(44,68,72,.32);background:rgba(255,255,255,.55);
  transition:all .38s var(--ease);
}
.page-dots button.active{background:var(--gold);border-color:var(--gold);box-shadow:0 0 0 4px rgba(201,164,76,.22);}
.page-dots button span{
  position:absolute;left:50%;bottom:20px;transform:translateX(-50%);
  white-space:nowrap;font-size:.74rem;letter-spacing:.1em;color:var(--ink-soft);
  background:rgba(251,248,242,.92);border:1px solid var(--line-soft);border-radius:999px;
  padding:3px 12px;opacity:0;pointer-events:none;transition:opacity .3s var(--ease);
}
.page-dots button:hover span{opacity:1;}

/* 翻页箭头 */
.page-arrows{
  position:fixed;right:clamp(16px,3vw,44px);bottom:clamp(16px,3vh,34px);
  z-index:70;display:flex;align-items:center;gap:12px;
}
.arrow-btn{
  width:46px;height:46px;border-radius:50%;cursor:pointer;display:grid;place-items:center;
  border:1px solid var(--line);background:rgba(251,248,242,.86);color:var(--tint-deep);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  transition:all .38s var(--ease);
}
.arrow-btn svg{width:20px;height:20px;}
.arrow-btn:hover{border-color:var(--gold);color:var(--gold-deep);transform:translateY(-2px);box-shadow:var(--shadow-sm);}
.arrow-btn:disabled{opacity:.28;cursor:not-allowed;transform:none;box-shadow:none;}

/* ---------------- 封面 ---------------- */
.page-hero{
  display:flex;align-items:center;justify-content:center;
  padding:104px clamp(20px,5vw,60px) 96px;overflow:hidden;
}
.hero-art{position:absolute;inset:0;z-index:0;}
.hero-svg{width:100%;height:100%;}
.hero-content{position:relative;z-index:2;max-width:880px;text-align:center;}
.hero-eyebrow{
  margin:0 0 22px;font-size:.86rem;letter-spacing:.42em;text-indent:.42em;
  color:var(--tint-soft);text-transform:uppercase;
}
.hero-eyebrow::before,.hero-eyebrow::after{
  content:"";display:inline-block;width:34px;height:1px;vertical-align:middle;
  background:linear-gradient(90deg,transparent,var(--gold));margin:0 14px;
}
.hero-eyebrow::after{background:linear-gradient(90deg,var(--gold),transparent);}
.hero-title{
  margin:0;font-size:clamp(2.5rem,7.4vw,5.2rem);font-weight:600;letter-spacing:.06em;
  line-height:1.18;color:var(--tint-deep);
  -webkit-text-stroke:1px rgba(201,164,76,.6);
  text-shadow:0 8px 34px rgba(201,164,76,.3),0 2px 2px rgba(255,255,255,.6);
}
.hero-subtitle{
  margin:20px 0 0;font-size:clamp(1rem,2.1vw,1.3rem);letter-spacing:.16em;
  color:var(--tint-soft);
}
.hero-subtitle::after{
  content:"";display:block;width:66px;height:2px;margin:22px auto 0;border-radius:2px;
  background:linear-gradient(90deg,transparent,var(--gold),transparent);
}
.hero-guide{
  margin:24px auto 0;max-width:660px;font-size:.99rem;line-height:2.05;
  color:var(--ink-soft);text-align:left;text-indent:2em;
}
.hero-actions{margin-top:40px;display:flex;gap:16px;justify-content:center;flex-wrap:wrap;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:15px 34px;border-radius:999px;font-size:.96rem;letter-spacing:.08em;
  cursor:pointer;border:1px solid transparent;transition:all .38s var(--ease);
  font-family:inherit;background:transparent;
}
.btn-primary{
  color:var(--sand-50);
  background:linear-gradient(135deg,var(--red) 0%,var(--red-deep) 100%);
  box-shadow:0 12px 28px rgba(160,58,49,.26),inset 0 0 0 1px rgba(224,198,132,.5);
}
.btn-primary:hover{transform:translateY(-3px) scale(1.02);box-shadow:0 20px 42px rgba(160,58,49,.34),inset 0 0 0 1px rgba(224,198,132,.75);}
.btn-ghost{
  color:var(--tint-deep);border-color:rgba(44,68,72,.24);background:rgba(255,255,255,.42);
}
.btn-ghost:hover{transform:translateY(-3px);border-color:var(--gold);color:var(--gold-deep);background:rgba(255,255,255,.72);box-shadow:var(--shadow-sm);}
.btn-mini{padding:9px 22px;font-size:.84rem;border-radius:999px;border-color:var(--line);color:var(--tint-soft);background:rgba(255,255,255,.6);}
.btn-mini:hover{border-color:var(--gold);color:var(--gold-deep);}

.swipe-hint{
  position:absolute;left:50%;bottom:30px;transform:translateX(-50%);z-index:3;
  display:flex;align-items:center;gap:14px;
  font-size:.78rem;letter-spacing:.22em;color:var(--tint-soft);
  animation:hintFloat 2.8s var(--ease) infinite;
}
.swipe-hint .hint-arrow{font-size:1.5rem;line-height:1;color:var(--gold);}
.swipe-hint .hint-arrow:first-child{animation:hintLeft 2.8s var(--ease) infinite;}
.swipe-hint .hint-arrow:last-child{animation:hintRight 2.8s var(--ease) infinite;}
@keyframes hintFloat{0%,100%{opacity:.72;}50%{opacity:1;}}
@keyframes hintLeft{0%,100%{transform:translateX(0);}50%{transform:translateX(-5px);}}
@keyframes hintRight{0%,100%{transform:translateX(0);}50%{transform:translateX(5px);}}

.btn-start{
  padding:8px 20px;font-size:.82rem;border-radius:999px;
  color:var(--red-deep);border:1px solid rgba(160,58,49,.4);background:rgba(160,58,49,.08);
  animation:idlePulse 2.6s var(--ease) infinite;
}
.btn-start:hover{background:rgba(160,58,49,.16);transform:translateY(-2px);}
.btn-start[hidden]{display:none;}

.node .node-flag{
  position:absolute;top:-26px;left:50%;transform:translateX(-50%);
  font-size:.66rem;letter-spacing:.12em;white-space:nowrap;
  color:var(--red-deep);background:rgba(251,248,242,.94);
  border:1px solid rgba(160,58,49,.34);border-radius:999px;padding:1px 9px;
}

/* ---------------- 通用板块 ---------------- */
.section{
  position:relative;z-index:1;
  max-width:var(--maxw);margin:0 auto;
  padding:clamp(96px,11vh,124px) clamp(20px,5vw,40px) clamp(56px,8vh,92px);
}
.section-head{max-width:820px;margin:0 auto clamp(46px,6vw,70px);text-align:center;}
.section-tag{
  display:inline-block;font-size:.78rem;letter-spacing:.34em;text-indent:.34em;
  color:var(--gold-deep);margin-bottom:16px;
}
.section-tag::before,.section-tag::after{
  content:"";display:inline-block;width:26px;height:1px;vertical-align:middle;
  background:var(--gold);opacity:.6;margin:0 12px;
}
.section-title{
  margin:0;font-size:clamp(1.7rem,3.6vw,2.7rem);font-weight:600;letter-spacing:.04em;
  line-height:1.4;color:var(--tint-deep);
}
.section-desc{margin:22px 0 0;color:var(--ink-soft);font-size:1rem;line-height:2.05;text-align:justify;}
/* 正文段落首行缩进 2 字符 */
.section-desc,.tl-text,.col-text,.resonance-text,.m-desc,.result p,.summary p{text-indent:2em;}
.sub-title,.col-title{
  margin:0 0 20px;font-size:1.14rem;font-weight:600;letter-spacing:.06em;color:var(--tint-deep);
  display:flex;align-items:center;gap:10px;
}
.sub-title::before,.col-title::before{
  content:"";width:8px;height:8px;border-radius:50%;background:var(--gold);
  box-shadow:0 0 0 3px rgba(201,164,76,.22);
}

/* ---------------- 溯源 ---------------- */
.origin-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(30px,4vw,56px);align-items:start;}

.timeline{position:relative;padding-left:34px;}
.timeline::before{
  content:"";position:absolute;left:11px;top:6px;bottom:6px;width:2px;
  background:linear-gradient(180deg,var(--gold),rgba(201,164,76,.16));
}
.tl-item{position:relative;padding:0 0 28px 0;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:-29px;top:9px;width:12px;height:12px;border-radius:50%;
  background:var(--sand-50);border:2px solid var(--gold);transition:all .4s var(--ease);
}
.tl-item:hover::before{background:var(--gold);box-shadow:0 0 0 5px rgba(201,164,76,.2);}
.tl-head{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap;}
.tl-dynasty{
  font-size:.72rem;letter-spacing:.2em;padding:3px 12px;border-radius:999px;
  background:rgba(44,68,72,.06);color:var(--tint);border:1px solid var(--line);
}
.tl-title{margin:0;font-size:1.02rem;font-weight:600;color:var(--tint-deep);}
.tl-text{margin:8px 0 0;font-size:.9rem;color:var(--ink-soft);line-height:1.95;}

.artifacts{display:grid;gap:18px;}
.artifact{
  display:flex;gap:18px;align-items:center;text-align:left;
  padding:20px;border-radius:var(--radius);cursor:pointer;
  background:linear-gradient(150deg,rgba(255,255,255,.8),rgba(239,231,216,.6));
  border:1px solid var(--line-soft);box-shadow:var(--shadow-sm);
  transition:all .42s var(--ease);font-family:inherit;
}
.artifact:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:rgba(201,164,76,.5);}
.artifact:hover .artifact-icon{box-shadow:0 0 0 1px rgba(201,164,76,.4),0 0 24px rgba(201,164,76,.35);}
.artifact-icon{
  flex:0 0 96px;width:96px;height:96px;border-radius:16px;overflow:hidden;
  background:linear-gradient(150deg,#F7F1E5,#E6D9BF);transition:box-shadow .42s var(--ease);
}
.artifact-icon img{width:100%;height:100%;object-fit:cover;transition:transform .55s var(--ease);}
.artifact:hover .artifact-icon img{transform:scale(1.07);}
.artifact-info h4{margin:0 0 6px;font-size:1rem;color:var(--tint-deep);font-weight:600;}
.artifact-info p{margin:0;font-size:.86rem;color:var(--ink-soft);line-height:1.8;}
.artifact-more{
  display:inline-block;margin-top:10px;font-size:.78rem;letter-spacing:.12em;color:var(--gold-deep);
}

/* ---------------- 小游戏地图 ---------------- */
.map-panel{
  position:relative;margin-bottom:34px;padding:clamp(22px,3vw,34px);
  border-radius:26px;border:1px solid var(--line-soft);
  background:linear-gradient(165deg,rgba(255,255,255,.86),rgba(243,236,224,.72));
  box-shadow:var(--shadow-sm);
}
.map-head{display:flex;justify-content:space-between;align-items:flex-start;gap:18px;flex-wrap:wrap;margin-bottom:18px;}
.map-title{margin:0;font-size:1.12rem;font-weight:600;letter-spacing:.05em;color:var(--tint-deep);}
.map-sub{margin:8px 0 0;font-size:.8rem;letter-spacing:.04em;color:var(--ink-faint);line-height:1.7;}
.map-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
.progress-chip{
  display:inline-block;padding:7px 18px;border-radius:999px;font-family:var(--serif-en);
  font-size:.82rem;letter-spacing:.06em;color:var(--gold-deep);
  background:rgba(201,164,76,.12);border:1px solid rgba(201,164,76,.32);
}
.progress-chip.muted{color:var(--tint-soft);background:rgba(44,68,72,.06);border-color:var(--line);}

.map-scroll{overflow-x:auto;overflow-y:hidden;padding-bottom:4px;}
.map-scroll::-webkit-scrollbar{height:6px;}
.map-scroll::-webkit-scrollbar-thumb{background:rgba(201,164,76,.45);border-radius:6px;}
.map-wrap{position:relative;width:100%;aspect-ratio:1000/250;min-height:210px;}
.route-svg{position:absolute;inset:0;width:100%;height:100%;overflow:visible;}
.route-base{
  fill:none;stroke:rgba(44,68,72,.2);stroke-width:2;
  stroke-dasharray:2 8;stroke-linecap:round;vector-effect:non-scaling-stroke;
}
.route-base.sea{stroke:rgba(44,68,72,.16);stroke-dasharray:8 7;}
.route-progress{
  fill:none;stroke:var(--gold);stroke-width:3.5;stroke-linecap:round;
  vector-effect:non-scaling-stroke;
  filter:drop-shadow(0 0 5px rgba(201,164,76,.7));
  stroke-dasharray:2000;stroke-dashoffset:2000;
  transition:stroke-dashoffset 1.1s var(--ease);
}
.map-nodes{position:absolute;inset:0;}

.node{
  position:absolute;transform:translate(-50%,-50%);
  display:flex;flex-direction:column;align-items:center;gap:8px;
  background:none;border:none;padding:0;cursor:pointer;
}
.node .dot{
  width:14px;height:14px;border-radius:50%;background:#BDB7A9;
  box-shadow:0 0 0 4px rgba(189,183,169,.22);transition:all .4s var(--ease);
}
.node .lbl{
  font-size:.78rem;color:var(--ink-faint);white-space:nowrap;letter-spacing:.04em;
  padding:1px 9px;border-radius:999px;transition:all .4s var(--ease);
  background:rgba(251,248,242,.72);
}
.node.done .dot{background:var(--gold);box-shadow:0 0 0 4px rgba(201,164,76,.24),0 0 16px rgba(201,164,76,.8);}
.node.done .lbl{color:var(--gold-deep);}
.node.current .dot{background:var(--red);box-shadow:0 0 0 4px rgba(160,58,49,.2);animation:nodePulse 2.2s var(--ease) infinite;}
.node.current .lbl{color:var(--red-deep);font-weight:600;background:rgba(160,58,49,.08);}
.node.idle .dot{background:#9FB4AE;box-shadow:0 0 0 4px rgba(159,180,174,.22);animation:idlePulse 3.2s var(--ease) infinite;}
.node.idle .lbl{color:var(--tint-soft);}
@keyframes idlePulse{
  0%,100%{box-shadow:0 0 0 4px rgba(159,180,174,.2);}
  50%{box-shadow:0 0 0 4px rgba(159,180,174,.2),0 0 13px rgba(159,180,174,.8);}
}
.node.locked{cursor:not-allowed;}
.node.locked .dot{opacity:.55;}
.node:hover:not(.locked) .dot{transform:scale(1.2);}
.node:hover:not(.locked) .lbl{color:var(--tint-deep);background:rgba(255,255,255,.9);}
.node:focus-visible{outline:none;}
.node:focus-visible .dot{box-shadow:0 0 0 3px var(--sand-50),0 0 0 6px var(--gold);}
@keyframes nodePulse{
  0%,100%{box-shadow:0 0 0 4px rgba(160,58,49,.18),0 0 0 0 rgba(160,58,49,.28);}
  60%{box-shadow:0 0 0 4px rgba(160,58,49,.18),0 0 0 14px rgba(160,58,49,0);}
}
.map-foot{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;margin-top:16px;}
.map-hint{margin:0;font-size:.84rem;color:var(--ink-faint);}
.map-tools{display:flex;gap:12px;flex-wrap:wrap;}

/* 百度地图真实路线面板 */
.baidu-panel{margin-top:18px;animation:fadeIn .5s var(--ease);}
.baidu-map{
  position:relative;width:100%;height:clamp(260px,42vh,420px);
  border-radius:18px;overflow:hidden;background:#EDE4D3;
  border:1px solid var(--line-soft);box-shadow:var(--shadow-sm);
}
.baidu-map .anchorBL{display:none;}
.baidu-msg{
  position:absolute;inset:0;display:grid;place-items:center;text-align:center;
  padding:24px;font-size:.86rem;color:var(--ink-soft);background:rgba(251,248,242,.92);
}
.baidu-note{margin:10px 0 0;font-size:.72rem;letter-spacing:.04em;color:var(--ink-faint);}

/* ---------------- 古今对话 ---------------- */
.heritage-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,4vw,54px);align-items:start;}
.heritage-col{
  padding:clamp(24px,3vw,34px);border-radius:26px;
  border:1px solid var(--line-soft);box-shadow:var(--shadow-sm);
  background:linear-gradient(165deg,rgba(255,255,255,.82),rgba(243,236,224,.66));
}
.heritage-col:last-child{background:linear-gradient(165deg,rgba(255,255,255,.9),rgba(233,240,238,.7));}
.col-text{margin:0 0 24px;font-size:.9rem;color:var(--ink-soft);line-height:1.95;text-align:justify;}
.pattern-cards{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
.pattern-card{
  padding:16px 12px;border-radius:var(--radius-sm);cursor:pointer;text-align:center;
  border:1px solid var(--line-soft);background:rgba(255,255,255,.6);
  transition:all .42s var(--ease);font-family:inherit;
}
.pattern-card:hover{transform:translateY(-4px);border-color:rgba(201,164,76,.55);box-shadow:var(--shadow-md);}
.pc-photo{display:block;width:100%;aspect-ratio:1/1;border-radius:12px;overflow:hidden;margin-bottom:10px;background:#EDE4D3;}
.pc-photo img{width:100%;height:100%;object-fit:cover;transition:transform .55s var(--ease);}
.pattern-card:hover .pc-photo img{transform:scale(1.07);}
.pattern-card .pc-name{display:block;font-size:.9rem;color:var(--tint-deep);font-weight:600;}
.pattern-card .pc-dir{display:block;margin-top:5px;font-size:.7rem;letter-spacing:.1em;color:var(--gold-deep);}
.pattern-card .pc-dir.west{color:var(--tint-soft);}
.col-tip{margin:18px 0 0;font-size:.76rem;color:var(--ink-faint);letter-spacing:.08em;}

.modern-cards{display:grid;gap:14px;}
.modern-card{
  display:flex;gap:16px;align-items:flex-start;padding:18px;border-radius:var(--radius-sm);
  border:1px solid var(--line-soft);background:rgba(255,255,255,.66);
  transition:all .42s var(--ease);
}
.modern-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:rgba(169,195,188,.7);}
.modern-icon{
  flex:0 0 112px;width:112px;height:84px;border-radius:14px;overflow:hidden;
  background:linear-gradient(150deg,#E9F0EE,#D6E3DF);
}
.modern-icon img{width:100%;height:100%;object-fit:cover;transition:transform .55s var(--ease);}
.modern-card:hover .modern-icon img{transform:scale(1.06);}
.modern-card h4{margin:0 0 5px;font-size:.98rem;color:var(--tint-deep);font-weight:600;}
.modern-card p{margin:0;font-size:.84rem;color:var(--ink-soft);line-height:1.8;}
.modern-info{flex:1;min-width:0;}
.mc-credit{display:block;margin-top:8px;font-size:.7rem;letter-spacing:.05em;color:var(--ink-faint);}

/* ---------------- 文明回响 ---------------- */
.resonance{
  position:relative;
  padding:clamp(76px,11vh,124px) clamp(20px,5vw,40px) clamp(56px,8vh,92px);
  display:flex;align-items:center;justify-content:center;
  overflow:hidden;background:linear-gradient(180deg,var(--sand-100),var(--sand-50) 60%,#EDF1EF);
}
.resonance-art{position:absolute;inset:0;z-index:0;}
.resonance-art svg{width:100%;height:100%;}
.resonance-content{position:relative;z-index:2;max-width:820px;text-align:center;}
.resonance-title{
  margin:0;font-size:clamp(1.9rem,4.6vw,3.3rem);font-weight:600;letter-spacing:.1em;
  color:var(--tint-deep);-webkit-text-stroke:.6px rgba(201,164,76,.55);
  text-shadow:0 10px 40px rgba(201,164,76,.26);
}
.resonance-text{
  margin:30px 0 0;font-size:clamp(.95rem,1.6vw,1.08rem);line-height:2.15;
  color:var(--ink-soft);text-align:left;text-indent:2em;
}
.resonance-tags{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-top:38px;}
.resonance-tags span{
  padding:9px 28px;border-radius:999px;font-size:.86rem;letter-spacing:.24em;text-indent:.24em;
  color:var(--tint-deep);border:1px solid rgba(201,164,76,.4);background:rgba(255,255,255,.5);
  transition:all .4s var(--ease);
}
.resonance-tags span:hover{background:rgba(201,164,76,.14);transform:translateY(-3px);}

/* ---------------- 页脚 ---------------- */
.site-footer{position:relative;z-index:1;background:var(--sand-100);padding:52px clamp(20px,5vw,40px) 46px;}
.footer-inner{max-width:var(--maxw);margin:0 auto;text-align:center;}
.footer-line{
  height:1px;margin:0 auto 30px;max-width:520px;
  background:linear-gradient(90deg,transparent,rgba(201,164,76,.7),transparent);
}
.footer-main{margin:0;font-size:1.02rem;line-height:1.9;color:var(--tint-deep);letter-spacing:.06em;font-weight:600;}
.footer-comp{margin:10px 0 0;font-size:.84rem;letter-spacing:.06em;color:var(--ink-soft);}

/* ---------------- 弹窗 ---------------- */
.modal{position:fixed;inset:0;z-index:90;display:none;align-items:center;justify-content:center;padding:24px;}
.modal.open{display:flex;}
.modal-backdrop{
  position:absolute;inset:0;background:rgba(32,54,56,.42);
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
  animation:fadeIn .35s var(--ease);
}
.modal-card{
  position:relative;z-index:1;width:min(760px,100%);max-height:86vh;overflow:auto;
  border-radius:24px;padding:clamp(28px,4vw,46px);
  background:linear-gradient(165deg,#FDFBF6,#F3ECDE);
  box-shadow:var(--shadow-lg);
  border:1px solid rgba(201,164,76,.3);
  animation:modalIn .45s var(--ease);
  overscroll-behavior:contain;
}
.modal-card::-webkit-scrollbar{width:8px;}
.modal-card::-webkit-scrollbar-thumb{background:rgba(201,164,76,.4);border-radius:8px;}
@keyframes fadeIn{from{opacity:0;}to{opacity:1;}}
@keyframes modalIn{from{opacity:0;transform:translateY(26px) scale(.97);}to{opacity:1;transform:none;}}
.modal-close{
  position:absolute;top:16px;right:16px;width:38px;height:38px;border-radius:50%;
  border:1px solid var(--line);background:rgba(255,255,255,.7);cursor:pointer;
  display:grid;place-items:center;transition:all .3s var(--ease);
}
.modal-close span{position:absolute;width:15px;height:1.4px;background:var(--tint);transition:background .3s;}
.modal-close span:first-child{transform:rotate(45deg);}
.modal-close span:last-child{transform:rotate(-45deg);}
.modal-close:hover{background:var(--tint);border-color:var(--tint);}
.modal-close:hover span{background:var(--gold-light);}

.m-head{margin-bottom:20px;padding-right:44px;}
.m-kicker{font-size:.74rem;letter-spacing:.3em;color:var(--gold-deep);text-transform:uppercase;}
.m-title{margin:10px 0 6px;font-size:clamp(1.5rem,3vw,2rem);font-weight:600;color:var(--tint-deep);letter-spacing:.04em;}
.m-sub{margin:0;font-size:.84rem;color:var(--ink-faint);letter-spacing:.08em;}
.m-desc{margin:22px 0 0;font-size:.96rem;line-height:2.05;color:var(--ink-soft);text-align:justify;}

.m-divider{height:1px;margin:26px 0;background:linear-gradient(90deg,rgba(201,164,76,.5),transparent);}
.m-label{font-size:.78rem;letter-spacing:.24em;color:var(--gold-deep);margin-bottom:14px;}

.options{display:grid;gap:14px;}
.option{
  display:block;width:100%;text-align:left;padding:18px 20px;border-radius:16px;cursor:pointer;
  border:1px solid var(--line-soft);background:rgba(255,255,255,.6);
  transition:all .38s var(--ease);font-family:inherit;
}
.option:hover{transform:translateY(-3px);border-color:rgba(201,164,76,.55);box-shadow:var(--shadow-md);background:#fff;}
.option .o-top{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
.option .o-key{
  flex:0 0 30px;width:30px;height:30px;border-radius:50%;display:grid;place-items:center;
  font-family:var(--serif-en);font-size:.82rem;font-weight:600;
  background:linear-gradient(135deg,var(--tint),var(--tint-deep));color:var(--gold-light);
}
.option.west .o-key{background:linear-gradient(135deg,var(--red),var(--red-deep));}
.option .o-label{font-size:.98rem;color:var(--tint-deep);font-weight:600;}
.option .o-tag{
  font-size:.68rem;letter-spacing:.14em;padding:2px 10px;border-radius:999px;
  color:var(--gold-deep);background:rgba(201,164,76,.14);border:1px solid rgba(201,164,76,.3);
}
.option.west .o-tag{color:var(--red-deep);background:rgba(160,58,49,.1);border-color:rgba(160,58,49,.28);}

.result{
  margin-top:6px;padding:22px;border-radius:18px;
  background:linear-gradient(150deg,rgba(201,164,76,.12),rgba(255,255,255,.66));
  border-left:3px solid var(--gold);animation:modalIn .45s var(--ease);
}
.result.west{background:linear-gradient(150deg,rgba(160,58,49,.1),rgba(255,255,255,.66));border-left-color:var(--red);}
.result-head{display:flex;align-items:center;gap:12px;margin-bottom:12px;flex-wrap:wrap;}
.result-key{
  width:30px;height:30px;border-radius:50%;display:grid;place-items:center;flex:0 0 30px;
  font-family:var(--serif-en);font-size:.82rem;font-weight:600;
  background:var(--gold);color:#fff;
}
.result.west .result-key{background:var(--red);}
.result-label{font-size:1rem;font-weight:600;color:var(--tint-deep);}
.result-tag{font-size:.68rem;letter-spacing:.14em;color:var(--gold-deep);}
.result.west .result-tag{color:var(--red-deep);}
.result p{margin:0;font-size:.94rem;line-height:2;color:var(--ink-soft);text-align:justify;}

.m-actions{display:flex;gap:14px;justify-content:flex-end;flex-wrap:wrap;margin-top:28px;}
.summary{
  margin-top:22px;padding:22px;border-radius:18px;
  background:linear-gradient(150deg,var(--tint),var(--tint-deep));color:#EFEAE0;
}
.summary h4{margin:0 0 12px;font-size:1rem;color:var(--gold-light);letter-spacing:.1em;font-weight:600;}
.summary p{margin:0;font-size:.94rem;line-height:2.05;color:#E4E0D6;text-align:justify;}

.m-photo{
  display:flex;justify-content:center;width:100%;margin:6px 0 20px;
}
.m-photo img{
  display:block;width:auto;height:auto;
  max-width:min(420px,100%);max-height:min(46vh,340px);
  border-radius:16px;background:#EDE4D3;box-shadow:var(--shadow-sm);
}
.m-credit{margin:0 0 4px;font-size:.72rem;letter-spacing:.05em;color:var(--ink-faint);text-align:center;}

/* ---------------- 提示条 ---------------- */
.toast{
  position:fixed;left:50%;bottom:38px;transform:translate(-50%,20px);
  padding:12px 26px;border-radius:999px;font-size:.86rem;letter-spacing:.06em;
  background:rgba(32,54,56,.92);color:var(--sand-100);box-shadow:var(--shadow-md);
  opacity:0;pointer-events:none;transition:all .4s var(--ease);z-index:120;
}
.toast.show{opacity:1;transform:translate(-50%,0);}

/* ---------------- 滚动渐入 ---------------- */
.reveal{opacity:0;transform:translateY(30px);transition:opacity .9s var(--ease),transform .9s var(--ease);}
.reveal.in{opacity:1;transform:none;}

/* ---------------- 响应式 ---------------- */
@media (max-width:960px){
  .origin-grid,.heritage-grid{grid-template-columns:1fr;}
  .site-nav{display:none;}
}
@media (max-width:640px){
  .brand-text small{display:none;}
  .brand-text em{font-size:.9rem;}
  .map-wrap{min-width:780px;min-height:200px;}
  .node .lbl{font-size:.68rem;padding:1px 6px;}
  .pattern-cards{grid-template-columns:1fr 1fr;}
  .modern-icon{flex:0 0 88px;width:88px;height:68px;}
  .artifact-icon{flex:0 0 76px;width:76px;height:76px;}
  .m-photo{max-width:100%;}
  .modal{padding:14px;}
  .swipe-hint span{font-size:.68rem;letter-spacing:.14em;}
  .page-dots{gap:9px;}
  .page-arrows{right:12px;bottom:12px;}
  .arrow-btn{width:40px;height:40px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  .reveal{opacity:1;transform:none;}
}