/* ============================================================
   english.css · 英语考试本体「The English Estate」专属设计系统
   基调：学院石堡（庄重）· 深牛津绿/墨棕 + 石墙 + 哥特拱窗 + 盾徽
   字体：Cinzel(题铭) / EB Garamond(正文) / 手写花体(签名)
   ============================================================ */

:root{
  /* —— 羊皮纸 / 石墙 —— */
  --e-parch:#e7ddc6;        /* 羊皮纸底 */
  --e-parch-2:#efe7d3;      /* 浅羊皮纸 */
  --e-stone:#3a3f3a;        /* 石墙深 */
  --e-ink:#2a2620;          /* 墨棕正文 */
  --e-ink-soft:#4d463a;
  --e-muted:#857a63;
  /* —— 学院色 —— */
  --e-oxford:#1f3d2f;       /* 牛津深绿 */
  --e-oxford-2:#2c5240;
  --e-wine:#5a2230;         /* 学院酒红 */
  --e-gold:#b18a4c;         /* 金箔 */
  --e-gold-soft:#d4b978;
  --e-rule:#cabfa3;
  --e-rule-soft:#d9cfb4;
  /* —— 字体 —— */
  --e-title:"Cinzel","EB Garamond",serif;      /* 碑刻题铭 */
  --e-serif:"EB Garamond","Noto Serif SC",Georgia,serif; /* 正文 */
  --e-script:"Snell Roundhand","Segoe Script","Noto Serif SC",cursive; /* 花体签名兜底 */
  --e-cn:"Noto Serif SC",serif;
  --e-ease:cubic-bezier(.2,.7,.2,1);
}

*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body.eng{
  font-family:var(--e-serif);
  color:var(--e-ink);
  background-color:var(--e-parch);
  /* 羊皮纸细纹 */
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='p'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23p)' opacity='0.04'/%3E%3C/svg%3E");
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
.eng ::selection{background:rgba(31,61,47,.16);}
.eng img{max-width:100%;display:block;}
.eng a{color:inherit;text-decoration:none;}

/* —— 容器 —— */
.e-wrap{max-width:1200px;margin:0 auto;padding:0 clamp(20px,5vw,64px);}

/* ============ 返回条（连回母站的细线，印章+金）============ */
.e-topbar{position:sticky;top:0;z-index:50;
  background:rgba(231,221,198,.9);backdrop-filter:saturate(1.3) blur(10px);-webkit-backdrop-filter:saturate(1.3) blur(10px);
  border-bottom:1px solid transparent;transition:box-shadow .3s ease,border-color .3s ease;}
.e-topbar.scrolled{border-bottom-color:var(--e-rule);box-shadow:0 6px 22px rgba(42,38,32,.08);}
.e-topbar-in{max-width:1200px;margin:0 auto;padding:14px clamp(20px,5vw,64px);display:flex;align-items:center;justify-content:space-between;gap:20px;}
.e-back{display:inline-flex;align-items:center;gap:12px;color:var(--e-ink-soft);font-family:var(--e-cn);font-size:14px;font-weight:600;letter-spacing:1px;transition:color .2s ease;}
.e-back:hover{color:var(--e-oxford);}
.e-back .seal-mini{width:38px;height:38px;flex:none;background:#a83227;border-radius:4px;padding:2px;box-shadow:inset 0 0 0 1.2px rgba(255,255,255,.28);overflow:hidden;}
.e-back .seal-mini svg{display:block;width:100%;height:100%;}
.e-back-arrow{transition:transform .2s ease;}
.e-back:hover .e-back-arrow{transform:translateX(-4px);}
.e-topnav{font-family:var(--e-title);font-size:13px;letter-spacing:3px;color:var(--e-muted);text-transform:uppercase;}
.e-topnav .en{color:var(--e-gold);}

/* —— 学科章节导航（含下拉，做成明显的按钮） —— */
.e-nav{display:flex;align-items:center;gap:8px;}
.e-nav-item{position:relative;}
.e-nav-link{display:inline-flex;align-items:center;gap:7px;cursor:pointer;
  background:var(--e-parch);border:1px solid var(--e-rule);
  font-family:var(--e-cn);font-size:14px;font-weight:600;letter-spacing:1px;color:var(--e-oxford);
  padding:8px 16px;border-radius:22px;transition:color .2s ease,background-color .2s ease,border-color .2s ease,box-shadow .2s ease;}
.e-nav-link:hover,.e-nav-item.on .e-nav-link{background:var(--e-oxford);border-color:var(--e-oxford);color:var(--e-parch);box-shadow:0 4px 12px rgba(31,61,47,.2);}
.e-nav-link .caret{width:7px;height:7px;border-right:1.6px solid currentColor;border-bottom:1.6px solid currentColor;
  transform:rotate(45deg) translateY(-2px);transition:transform .25s ease;opacity:.85;}
.e-nav-item.on .e-nav-link .caret{transform:rotate(-135deg) translateY(-1px);}
/* 首项（词汇引擎）：金色实心，最抢眼 */
.e-nav-link.accent{background:var(--e-gold);border-color:var(--e-gold);color:#fff;}
.e-nav-link.accent:hover{background:#c99a3a;border-color:#c99a3a;color:#fff;box-shadow:0 4px 14px rgba(177,138,76,.4);}
/* 下拉面板 */
.e-drop{position:absolute;top:calc(100% + 8px);left:50%;transform:translateX(-50%) translateY(-6px);
  min-width:210px;background:var(--e-parch-2);border:1px solid var(--e-rule);border-radius:10px;
  box-shadow:0 16px 40px rgba(42,38,32,.18);padding:8px;opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity .22s ease,transform .22s var(--e-ease),visibility .22s;z-index:60;}
.e-nav-item.on .e-drop{opacity:1;visibility:visible;pointer-events:auto;transform:translateX(-50%) translateY(0);}
.e-drop a{display:flex;align-items:baseline;gap:8px;padding:9px 12px;border-radius:6px;
  font-family:var(--e-cn);font-size:14px;color:var(--e-ink);transition:background-color .18s ease;}
.e-drop a:hover{background:rgba(31,61,47,.08);}
.e-drop a .en{font-family:var(--e-title);font-size:11px;letter-spacing:1px;color:var(--e-muted);text-transform:uppercase;}
.e-drop a .badge{margin-left:auto;font-family:var(--e-title);font-size:9px;letter-spacing:.5px;padding:1px 7px;border-radius:20px;}
.e-drop a .badge.live{background:var(--e-gold);color:#fff;}
.e-drop a .badge.soon{background:transparent;color:var(--e-muted);border:1px solid var(--e-rule);}
.e-drop .drop-div{height:1px;background:var(--e-rule-soft);margin:6px 8px;}
.e-drop .drop-cap{font-family:var(--e-title);font-size:10px;letter-spacing:2px;color:var(--e-gold);text-transform:uppercase;padding:6px 12px 2px;}

/* 锚点滚动为 sticky 导航留出偏移 */
.e-anchor{scroll-margin-top:76px;}

/* 汉堡（移动端） */
.e-nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px;color:var(--e-ink-soft);}
.e-nav-toggle svg{display:block;width:24px;height:24px;}
@media(max-width:860px){
  .e-topnav{display:none;}
  .e-nav-toggle{display:inline-flex;}
  .e-nav{position:absolute;top:100%;right:clamp(12px,5vw,64px);flex-direction:column;align-items:stretch;gap:2px;
    min-width:200px;background:var(--e-parch-2);border:1px solid var(--e-rule);border-radius:10px;padding:8px;
    box-shadow:0 16px 40px rgba(42,38,32,.18);opacity:0;visibility:hidden;transform:translateY(-8px);
    transition:opacity .22s ease,transform .22s ease,visibility .22s;}
  .e-topbar.nav-open .e-nav{opacity:1;visibility:visible;transform:none;}
  .e-drop{position:static;transform:none;min-width:0;box-shadow:none;border:none;background:rgba(31,61,47,.04);
    padding:2px 4px 6px;margin:2px 0 4px;opacity:1;visibility:visible;pointer-events:auto;
    max-height:0;overflow:hidden;transition:max-height .28s ease;}
  .e-nav-item.on .e-drop{max-height:520px;transform:none;}
  .e-nav-link{width:100%;justify-content:space-between;}
}

/* ============ HERO 卷首 ============ */
.e-hero{position:relative;overflow:hidden;background:var(--e-oxford);color:var(--e-parch);
  padding:clamp(80px,12vh,140px) 0 clamp(70px,10vh,120px);}
/* 石墙暗纹 + 烛光渐晕 */
.e-hero::before{content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(ellipse 70% 60% at 50% 35%,transparent 40%,rgba(0,0,0,.45) 100%),
    repeating-linear-gradient(0deg,rgba(0,0,0,.10) 0 2px,transparent 2px 62px),
    repeating-linear-gradient(90deg,rgba(0,0,0,.10) 0 2px,transparent 2px 120px);}
.e-hero-in{position:relative;z-index:1;max-width:900px;margin:0 auto;padding:0 clamp(20px,5vw,64px);text-align:center;}
.e-crest{width:64px;height:64px;margin:0 auto 26px;}
.e-hero-eyebrow{font-family:var(--e-title);font-size:13px;letter-spacing:6px;color:var(--e-gold-soft);text-transform:uppercase;margin-bottom:24px;}
.e-hero h1{font-family:var(--e-title);font-weight:700;font-size:clamp(38px,6vw,72px);line-height:1.1;letter-spacing:2px;color:#fff;margin-bottom:10px;}
.e-hero .cn{font-family:var(--e-cn);font-size:clamp(17px,2vw,21px);color:var(--e-gold-soft);letter-spacing:6px;font-weight:500;margin-bottom:30px;}
/* 鹅毛笔手写签名 */
.e-quill{max-width:520px;margin:0 auto 8px;}
.e-quill svg{width:100%;height:auto;overflow:visible;}
.e-quill path{fill:none;stroke:var(--e-gold-soft);stroke-width:1.6;
  stroke-dasharray:1400;stroke-dashoffset:1400;animation:e-write 3.2s var(--e-ease) .5s forwards;}
@keyframes e-write{to{stroke-dashoffset:0;}}
.e-hero-quote{font-style:italic;font-size:clamp(16px,1.8vw,19px);color:rgba(231,221,198,.85);letter-spacing:.5px;margin-top:14px;}
.e-hero-quote .src{display:block;font-style:normal;font-family:var(--e-title);font-size:12px;letter-spacing:3px;color:var(--e-gold-soft);margin-top:12px;text-transform:uppercase;}
.e-scroll{margin-top:44px;font-family:var(--e-title);font-size:12px;letter-spacing:3px;color:var(--e-gold-soft);text-transform:uppercase;opacity:.85;}

/* ============ 区块通用 ============ */
.e-section{padding:clamp(64px,9vw,110px) 0;}
.e-section.parch2{background:var(--e-parch-2);border-top:1px solid var(--e-rule-soft);border-bottom:1px solid var(--e-rule-soft);}
.e-kicker{display:flex;align-items:center;justify-content:center;gap:14px;font-family:var(--e-title);font-size:12px;font-weight:600;letter-spacing:4px;color:var(--e-gold);text-transform:uppercase;margin-bottom:18px;}
.e-kicker::before,.e-kicker::after{content:"";width:34px;height:1px;background:var(--e-gold);opacity:.6;}
.e-h2{font-family:var(--e-title);text-align:center;font-weight:700;font-size:clamp(28px,4vw,46px);letter-spacing:1px;color:var(--e-ink);line-height:1.2;margin-bottom:16px;}
.e-h2 .cn{display:block;font-family:var(--e-cn);font-size:.5em;letter-spacing:4px;color:var(--e-muted);margin-top:10px;font-weight:500;}
.e-lede{text-align:center;max-width:640px;margin:0 auto 48px;font-size:18px;line-height:1.9;color:var(--e-ink-soft);}
/* 古籍掉落首字母 */
.e-drop::first-letter{font-family:var(--e-title);font-size:3.4em;float:left;line-height:.8;padding:6px 12px 0 0;color:var(--e-wine);font-weight:700;}

/* ============ 庄园地图 · 开放式院落 ============ */
.estate{display:flex;flex-direction:column;gap:clamp(36px,5vw,56px);}
.estate-group .eg-head{display:flex;align-items:center;gap:16px;margin-bottom:22px;}
.estate-group .eg-name{font-family:var(--e-title);font-size:15px;letter-spacing:4px;color:var(--e-oxford);text-transform:uppercase;white-space:nowrap;}
.estate-group .eg-cn{font-family:var(--e-cn);font-size:13px;color:var(--e-muted);letter-spacing:2px;}
.estate-group .eg-line{flex:1;height:1px;background:var(--e-rule);}
.halls{display:grid;gap:22px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));}

/* —— 一座城堡卡 —— */
.hall{position:relative;display:block;border-radius:6px;overflow:hidden;text-decoration:none;color:inherit;
  background:var(--e-stone);min-height:230px;border:1px solid rgba(0,0,0,.25);
  box-shadow:0 10px 26px rgba(42,38,32,.18);transition:transform .3s var(--e-ease),box-shadow .3s var(--e-ease);}
.hall:hover{transform:translateY(-6px);box-shadow:0 22px 48px rgba(42,38,32,.28);}
/* 城堡立面（CSS 石墙 + 拱窗 + 图片位）*/
.hall-face{position:absolute;inset:0;z-index:0;
  background:
    linear-gradient(180deg,rgba(31,61,47,.35),rgba(0,0,0,.55)),
    repeating-linear-gradient(0deg,rgba(255,255,255,.03) 0 1px,transparent 1px 34px),
    repeating-linear-gradient(90deg,rgba(255,255,255,.03) 0 1px,transparent 1px 46px),
    linear-gradient(135deg,#4a5348,#2f352e);}
.hall-face img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.55;}
/* 哥特拱窗（灯火）*/
.hall-window{position:absolute;top:28px;left:50%;transform:translateX(-50%);width:44px;height:64px;z-index:1;
  background:linear-gradient(180deg,#6b7566,#39413a);
  border-radius:22px 22px 4px 4px;box-shadow:inset 0 0 0 2px rgba(0,0,0,.3);
  transition:background .35s ease,box-shadow .35s ease;}
.hall:hover .hall-window{background:linear-gradient(180deg,#f0d68a,#c99a3a);
  box-shadow:inset 0 0 0 2px rgba(0,0,0,.3),0 0 26px rgba(240,214,138,.6);}
/* 牌匾 */
.hall-plaque{position:absolute;left:16px;right:16px;bottom:16px;z-index:2;
  background:linear-gradient(180deg,#efe7d3,#ddd0b0);border:1px solid var(--e-gold);border-radius:4px;
  padding:14px 16px;text-align:center;box-shadow:0 4px 12px rgba(0,0,0,.3);
  transition:transform .3s var(--e-ease);}
.hall:hover .hall-plaque{transform:scale(1.03);}
.hall-plaque .en{font-family:var(--e-title);font-size:17px;font-weight:700;letter-spacing:2px;color:var(--e-oxford);line-height:1.2;}
.hall-plaque .cn{font-family:var(--e-cn);font-size:13px;color:var(--e-ink-soft);letter-spacing:2px;margin-top:4px;}
.hall-status{position:absolute;top:14px;right:14px;z-index:2;font-family:var(--e-title);font-size:10px;letter-spacing:1.5px;
  padding:4px 9px;border-radius:20px;text-transform:uppercase;}
.hall-status.live{background:var(--e-gold);color:#fff;}
.hall-status.soon{background:rgba(0,0,0,.4);color:var(--e-gold-soft);}

/* —— 修炼场（横长条，独立建筑）—— */
.yard{position:relative;border-radius:6px;overflow:hidden;color:var(--e-parch);
  background:linear-gradient(120deg,var(--e-wine),#3a1620);min-height:200px;display:flex;align-items:center;
  border:1px solid rgba(0,0,0,.3);box-shadow:0 12px 30px rgba(42,38,32,.2);}
.yard::before{content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(90deg,rgba(255,255,255,.04) 0 1px,transparent 1px 50px);}
.yard-in{position:relative;z-index:1;padding:clamp(28px,4vw,44px);}
.yard .yl{font-family:var(--e-title);font-size:12px;letter-spacing:4px;color:var(--e-gold-soft);text-transform:uppercase;margin-bottom:12px;}
.yard h3{font-family:var(--e-title);font-size:clamp(24px,3vw,34px);letter-spacing:1px;color:#fff;margin-bottom:12px;}
.yard p{max-width:520px;font-size:16px;line-height:1.8;color:rgba(231,221,198,.85);margin-bottom:20px;}
.e-btn{display:inline-flex;align-items:center;gap:10px;font-family:var(--e-title);font-size:14px;letter-spacing:2px;
  padding:12px 26px;border-radius:3px;border:1px solid var(--e-gold-soft);color:var(--e-gold-soft);text-transform:uppercase;
  transition:background-color .25s ease,color .25s ease,transform .2s ease;}
.e-btn:hover{background:var(--e-gold-soft);color:var(--e-wine);transform:translateY(-2px);}
.e-btn.solid{background:var(--e-gold);border-color:var(--e-gold);color:#fff;}
.e-btn.solid:hover{background:#c99a3a;color:#fff;}
.e-btn .arw{transition:transform .2s ease;}
.e-btn:hover .arw{transform:translateX(4px);}

/* ============================================================
   英语本体 · 学统骨架 The English Ontology
   忠实承接 ontology.html 五维脊椎 + pillar-06 金字塔逻辑：
   一条中轴立起「英语本体」，六大能力维度如脊椎骨节向两侧展开；
   下接「学统八阶」庄严索引。零游戏化，教育主体绝对突出。
   ============================================================ */

/* —— 本体总纲：脊椎结构图（放大，撑满画布）—— */
.onto{max-width:1200px;margin:10px auto 0;}
.onto-spine{position:relative;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  gap:clamp(24px,5vw,72px);padding:clamp(30px,5vw,60px) 0;}
/* 中轴线 */
.onto-spine::before{content:"";position:absolute;left:50%;top:4%;bottom:4%;width:2px;transform:translateX(-50%);
  background:linear-gradient(180deg,transparent,var(--e-gold) 12%,var(--e-gold) 88%,transparent);opacity:.7;}
/* 中央本体核 */
.onto-core{position:relative;z-index:2;justify-self:center;width:clamp(190px,24vw,264px);height:clamp(190px,24vw,264px);
  border-radius:50%;display:grid;place-items:center;text-align:center;padding:0 clamp(28px,4vw,40px);
  background:radial-gradient(circle at 42% 38%,#2c5240,var(--e-oxford) 70%);
  border:2px solid var(--e-gold-soft);
  box-shadow:0 0 0 10px rgba(177,138,76,.12),0 22px 54px rgba(31,61,47,.42),inset 0 0 48px rgba(0,0,0,.35);}
.onto-core .oc-en{font-family:var(--e-title);font-size:clamp(14px,1.5vw,18px);letter-spacing:1px;color:var(--e-gold-soft);line-height:1.25;white-space:nowrap;}
.onto-core .oc-cn{font-family:var(--e-cn);font-size:clamp(26px,3vw,36px);font-weight:700;color:#fff;letter-spacing:5px;margin:8px 0 3px;}
.onto-core .oc-sub{font-family:var(--e-serif);font-style:italic;font-size:13px;color:rgba(231,221,198,.7);letter-spacing:1px;}
/* 两翼骨节 */
.onto-wing{display:flex;flex-direction:column;gap:clamp(16px,2.4vw,28px);}
.onto-node{position:relative;display:flex;align-items:center;gap:16px;min-height:76px;
  background:var(--e-parch-2);border:1px solid var(--e-rule);border-radius:9px;
  padding:18px 22px;box-shadow:0 4px 12px rgba(42,38,32,.07);
  transition:border-color .25s ease,transform .25s var(--e-ease),box-shadow .25s ease;}
.onto-wing.left .onto-node{flex-direction:row-reverse;text-align:right;}
.onto-node:hover{border-color:var(--e-gold);transform:translateY(-2px);box-shadow:0 10px 22px rgba(42,38,32,.13);}
/* 骨节连向中轴的短横 */
.onto-node::after{content:"";position:absolute;top:50%;width:clamp(24px,5vw,72px);height:1px;background:var(--e-rule);}
.onto-wing.left  .onto-node::after{right:-1px;transform:translateX(100%);}
.onto-wing.right .onto-node::after{left:-1px;transform:translateX(-100%);}
.onto-node .nd-en{font-family:var(--e-title);font-size:15px;letter-spacing:1.5px;color:var(--e-oxford);}
.onto-node .nd-cn{font-family:var(--e-cn);font-size:19px;font-weight:600;color:var(--e-ink);}
.onto-node .nd-mark{flex:none;width:42px;height:42px;border-radius:50%;display:grid;place-items:center;
  background:var(--e-oxford);color:var(--e-gold-soft);font-family:var(--e-title);font-size:15px;}
/* 已通电的维度：金色描边 + 可点 */
a.onto-node{text-decoration:none;color:inherit;}
.onto-node.linked{border-color:var(--e-gold);background:linear-gradient(180deg,var(--e-parch-2),rgba(177,138,76,.1));cursor:pointer;}
.onto-node.linked .nd-cn{color:var(--e-oxford);}
.onto-node.linked .nd-mark{background:var(--e-gold);color:#fff;}
.onto-node .nd-go{margin-left:auto;font-family:var(--e-title);color:var(--e-gold);font-size:16px;opacity:0;transform:translateX(-4px);transition:opacity .25s ease,transform .25s var(--e-ease);}
.onto-wing.left .onto-node .nd-go{margin-left:0;margin-right:auto;}
.onto-node.linked .nd-go{opacity:.8;}
.onto-node.linked:hover .nd-go{opacity:1;transform:translateX(0);}
.onto-node.linked:hover{box-shadow:0 12px 26px rgba(177,138,76,.24);}
.onto-cap{text-align:center;font-family:var(--e-serif);font-style:italic;color:var(--e-muted);font-size:14px;margin-top:16px;letter-spacing:.5px;}

/* —— 学统八阶：庄严索引 —— */
.course{margin-top:8px;}
.course-strata{margin-top:clamp(30px,4vw,48px);}
.strata-head{display:flex;align-items:baseline;gap:14px;margin-bottom:18px;}
.strata-head .sh-en{font-family:var(--e-title);font-size:14px;letter-spacing:3px;color:var(--e-oxford);text-transform:uppercase;white-space:nowrap;}
.strata-head .sh-cn{font-family:var(--e-cn);font-size:13px;color:var(--e-muted);letter-spacing:2px;}
.strata-head .sh-line{flex:1;height:1px;background:var(--e-rule);}
.course-list{display:grid;gap:14px;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));}
.stage{position:relative;display:flex;align-items:center;gap:16px;
  background:var(--e-parch-2);border:1px solid var(--e-rule);border-left:3px solid var(--e-rule);border-radius:7px;
  padding:16px 18px;text-decoration:none;color:inherit;
  transition:border-color .25s ease,transform .25s var(--e-ease),box-shadow .25s ease;}
.stage .st-no{flex:none;font-family:var(--e-title);font-size:20px;color:var(--e-muted);width:34px;text-align:center;letter-spacing:1px;}
.stage .st-body{flex:1;min-width:0;}
.stage .st-name{display:flex;align-items:baseline;gap:8px;flex-wrap:wrap;}
.stage .st-en{font-family:var(--e-title);font-size:15px;font-weight:600;letter-spacing:1px;color:var(--e-oxford);}
.stage .st-cn{font-family:var(--e-cn);font-size:15px;font-weight:600;color:var(--e-ink);}
.stage .st-aim{font-family:var(--e-serif);font-size:13px;color:var(--e-ink-soft);margin-top:3px;line-height:1.6;}
.stage .st-status{flex:none;font-family:var(--e-title);font-size:10px;letter-spacing:1px;text-transform:uppercase;
  padding:4px 10px;border-radius:20px;white-space:nowrap;}
.stage .st-status.live{background:var(--e-gold);color:#fff;}
.stage .st-status.soon{background:transparent;color:var(--e-muted);border:1px solid var(--e-rule);}
/* 开放阶：通电，可点 */
.stage.open{border-left-color:var(--e-gold);cursor:pointer;}
.stage.open:hover{border-color:var(--e-gold);transform:translateY(-2px);box-shadow:0 12px 26px rgba(42,38,32,.14);}
.stage.open .st-no{color:var(--e-gold);}
.stage.locked{opacity:.82;}
.stage.locked:hover{border-color:var(--e-rule-soft);}

/* —— 修炼场（基石段）—— */
.ground{margin-top:clamp(30px,4vw,48px);position:relative;overflow:hidden;border-radius:8px;color:var(--e-parch);
  background:linear-gradient(120deg,var(--e-oxford),#14261c);border:1px solid rgba(0,0,0,.3);
  box-shadow:0 12px 30px rgba(42,38,32,.2);padding:clamp(26px,4vw,40px);}
.ground .g-l{font-family:var(--e-title);font-size:12px;letter-spacing:4px;color:var(--e-gold-soft);text-transform:uppercase;margin-bottom:10px;}
.ground h3{font-family:var(--e-title);font-size:clamp(22px,3vw,30px);letter-spacing:1px;color:#fff;margin-bottom:10px;}
.ground h3 .cn{font-family:var(--e-cn);font-size:.7em;letter-spacing:3px;margin-left:10px;color:var(--e-gold-soft);}
.ground p{max-width:560px;font-size:15px;line-height:1.85;color:rgba(231,221,198,.82);margin-bottom:18px;}

@media(max-width:760px){
  .onto-spine{grid-template-columns:1fr;gap:16px;}
  .onto-spine::before{display:none;}
  .onto-core{order:-1;}
  .onto-wing.left .onto-node{flex-direction:row;text-align:left;}
  .onto-node::after{display:none;}
}

/* ============================================================
   词汇引擎 · The Vocabulary Engine
   镇店重器：羊皮纸底 + 墨金，与全站同源。
   一句话钩子 + 三大近整屏框，逐一讲透一种学习模式（含真实举例）。
   ============================================================ */
/* —— 一句话钩子 —— */
.veng-hook{padding:clamp(70px,11vw,130px) 0;text-align:center;}
.veng-hook .eyebrow{font-family:var(--e-title);font-size:12px;letter-spacing:5px;color:var(--e-gold);text-transform:uppercase;margin-bottom:22px;}
.veng-hook h2{font-family:var(--e-cn);font-size:clamp(28px,4.6vw,54px);font-weight:700;color:var(--e-ink);letter-spacing:2px;line-height:1.4;}
.veng-hook h2 b{color:var(--e-wine);font-weight:700;}
.veng-hook .en{display:block;font-family:var(--e-title);font-style:italic;font-size:clamp(14px,1.6vw,19px);letter-spacing:2px;color:var(--e-gold);margin-top:20px;font-weight:400;}

/* —— 模式大框：一框近整屏 —— */
.vpanel{min-height:88vh;display:flex;align-items:center;
  border-top:1px solid var(--e-rule);padding:clamp(48px,8vh,96px) 0;}
.vpanel.alt{background:var(--e-parch-2);}
.vpanel-in{width:100%;max-width:1080px;margin:0 auto;padding:0 clamp(20px,5vw,64px);
  display:grid;grid-template-columns:1fr 1fr;gap:clamp(30px,5vw,64px);align-items:center;}
.vpanel.mirror .vpanel-in{direction:rtl;}
.vpanel.mirror .vpanel-in>*{direction:ltr;}
/* 左：文案 */
.vp-no{font-family:var(--e-title);font-size:14px;letter-spacing:4px;color:var(--e-gold);margin-bottom:16px;}
.vp-no span{color:var(--e-muted);}
.vp-t{font-family:var(--e-cn);font-size:clamp(24px,3.2vw,38px);font-weight:700;color:var(--e-ink);letter-spacing:1px;line-height:1.25;margin-bottom:8px;}
.vp-en{font-family:var(--e-title);font-size:14px;letter-spacing:2px;color:var(--e-oxford);text-transform:uppercase;margin-bottom:20px;}
.vp-d{font-family:var(--e-cn);font-size:16px;line-height:1.95;color:var(--e-ink-soft);margin-bottom:18px;}
.vp-d b{color:var(--e-wine);}
.vp-feats{list-style:none;margin:0 0 4px;padding:0;}
.vp-feats li{font-family:var(--e-cn);font-size:14.5px;line-height:1.7;color:var(--e-ink-soft);padding-left:22px;position:relative;margin-bottom:10px;}
.vp-feats li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;background:var(--e-gold);}
/* 右：真实举例卡（羊皮纸雕版） */
.vp-demo{background:var(--e-parch);border:1px solid var(--e-rule);border-radius:12px;overflow:hidden;
  box-shadow:0 16px 40px rgba(42,38,32,.14);}
.vpanel.alt .vp-demo{background:#f4eede;}
.vp-demo-bar{display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:12px 18px;background:var(--e-oxford);color:var(--e-parch);}
.vp-demo-bar .dw{font-family:var(--e-title);font-size:18px;letter-spacing:1px;color:#fff;}
.vp-demo-bar .di{font-family:var(--e-serif);font-style:italic;font-size:14px;color:var(--e-gold-soft);}
.vp-demo-body{padding:clamp(20px,3vw,30px);}

/* demo：词素拆分 */
.morph{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:18px;}
.morph .piece{display:inline-flex;flex-direction:column;align-items:center;
  background:rgba(31,61,47,.06);border:1px solid var(--e-gold-soft);border-radius:9px;padding:9px 18px;}
.morph .piece .p{font-family:var(--e-title);font-size:19px;color:var(--e-oxford);letter-spacing:1px;}
.morph .piece .pm{font-family:var(--e-cn);font-size:12px;color:var(--e-gold);margin-top:3px;}
.morph .plus{color:var(--e-muted);font-size:18px;}
.morph .eq{font-family:var(--e-cn);font-size:15px;color:var(--e-ink);}
.demo-syl{font-family:var(--e-serif);font-size:20px;letter-spacing:2px;color:var(--e-ink-soft);text-align:center;padding:10px 0;border-top:1px dashed var(--e-rule-soft);}

/* demo：词义辨析四连 */
.sense-grid{display:grid;gap:0;}
.sense-item{display:grid;grid-template-columns:130px 1fr;gap:14px;align-items:baseline;
  padding:11px 0;border-bottom:1px dashed var(--e-rule-soft);}
.sense-item:last-child{border-bottom:none;}
.sense-item .si-w{font-family:var(--e-title);font-size:15px;color:var(--e-ink-soft);}
.sense-item.hit .si-w{color:var(--e-wine);font-weight:600;}
.sense-item .si-c{font-family:var(--e-cn);font-size:14.5px;color:var(--e-ink-soft);line-height:1.6;}
.sense-item.hit .si-c{color:var(--e-ink);font-weight:600;}
.si-flag{font-family:var(--e-cn);font-size:11px;color:#fff;background:var(--e-wine);padding:1px 8px;border-radius:20px;margin-left:8px;}

/* demo：默写闯关流程 */
.flow{display:flex;flex-direction:column;gap:10px;}
.flow-step{display:flex;align-items:center;gap:14px;padding:12px 16px;background:rgba(31,61,47,.05);border:1px solid var(--e-rule);border-radius:8px;}
.flow-step .fs-n{flex:none;width:30px;height:30px;border-radius:50%;background:var(--e-oxford);color:var(--e-gold-soft);font-family:var(--e-title);font-size:14px;display:grid;place-items:center;}
.flow-step .fs-b{font-family:var(--e-cn);font-size:14.5px;color:var(--e-ink-soft);line-height:1.5;}
.flow-step .fs-b b{color:var(--e-ink);}
.flow-verdict{margin-top:6px;text-align:center;font-family:var(--e-cn);font-size:14px;padding:12px;border-radius:8px;
  background:rgba(177,138,76,.12);border:1px solid var(--e-gold-soft);color:var(--e-ink);}
.flow-verdict b{color:var(--e-wine);}
/* demo：语法辨析 */
.gram{font-family:var(--e-cn);font-size:14.5px;line-height:2;color:var(--e-ink-soft);}
.gram .ln{display:block;padding:4px 0;}
.gram .ok{color:var(--e-oxford);font-family:var(--e-serif);}
.gram .no{color:var(--e-wine);font-family:var(--e-serif);text-decoration:line-through;text-decoration-color:rgba(90,34,48,.4);}
.gram .note{color:var(--e-muted);font-size:13px;}

.veng-cta{text-align:center;padding:clamp(50px,8vw,90px) 0;border-top:1px solid var(--e-rule);}
.veng-cta .e-btn.solid{font-size:15px;padding:14px 34px;}
.veng-cta .sub{font-family:var(--e-cn);font-size:14px;color:var(--e-muted);margin-top:16px;letter-spacing:1px;}

@media(max-width:760px){
  .vpanel{min-height:auto;}
  .vpanel-in{grid-template-columns:1fr;gap:28px;}
  .vpanel.mirror .vpanel-in{direction:ltr;}
  .sense-item{grid-template-columns:110px 1fr;gap:10px;}
}

/* ============ 文化美廊（五美，后续 B 阶段）============ */
.gallery-row{display:grid;grid-template-columns:1fr 1fr;gap:0;align-items:stretch;min-height:340px;}
.gallery-row:nth-child(even){direction:rtl;}
.gallery-row:nth-child(even)>*{direction:ltr;}
.g-media{background:var(--e-stone);position:relative;overflow:hidden;display:grid;place-items:center;}
.g-media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.g-media .ph{color:rgba(231,221,198,.5);font-family:var(--e-title);font-size:12px;letter-spacing:3px;text-align:center;line-height:2;}
.g-text{padding:clamp(30px,5vw,60px);display:flex;flex-direction:column;justify-content:center;}
.g-text .gt-no{font-family:var(--e-title);font-size:13px;letter-spacing:3px;color:var(--e-gold);margin-bottom:14px;}
.g-text h3{font-family:var(--e-title);font-size:clamp(22px,3vw,32px);letter-spacing:1px;color:var(--e-ink);margin-bottom:14px;}
.g-text .quote{font-style:italic;font-size:17px;line-height:1.8;color:var(--e-ink-soft);margin-bottom:10px;}
.g-text .cn{font-family:var(--e-cn);font-size:14px;color:var(--e-muted);line-height:1.8;}

/* ============ 底部 ============ */
.e-foot{background:var(--e-oxford);color:var(--e-parch);text-align:center;padding:clamp(50px,7vw,80px) 0;}
.e-foot h3{font-family:var(--e-title);font-size:clamp(22px,3vw,34px);letter-spacing:1px;color:#fff;margin-bottom:16px;}
.e-foot p{color:rgba(231,221,198,.8);max-width:520px;margin:0 auto 28px;line-height:1.8;}
.e-foot-links{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;}

/* 滚动入场（js-reveal 守卫）*/
body.eng.js-reveal .e-section,body.eng.js-reveal .gallery-row{opacity:0;transform:translateY(26px);
  transition:opacity .8s var(--e-ease),transform .8s var(--e-ease);}
body.eng.js-reveal .e-section.in-view,body.eng.js-reveal .gallery-row.in-view{opacity:1;transform:none;}

@media(max-width:720px){
  .gallery-row{grid-template-columns:1fr;}
  .gallery-row:nth-child(even){direction:ltr;}
  .g-media{min-height:220px;}
}
@media(prefers-reduced-motion:reduce){
  .e-quill path{animation:none;stroke-dashoffset:0;}
  body.eng.js-reveal .e-section,body.eng.js-reveal .gallery-row{opacity:1;transform:none;transition:none;}
  *{scroll-behavior:auto!important;}
}

/* ============================================================
   学堂内页 · Hall（小托福堂为首座通电）
   卷首 + 四模块入口，词汇引擎为通电重器置顶。
   ============================================================ */
.hall-hero{position:relative;overflow:hidden;background:var(--e-oxford);color:var(--e-parch);
  padding:clamp(64px,10vh,110px) 0 clamp(54px,8vh,90px);text-align:center;}
.hall-hero::before{content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(ellipse 70% 60% at 50% 30%,transparent 42%,rgba(0,0,0,.4) 100%),
    repeating-linear-gradient(0deg,rgba(0,0,0,.08) 0 2px,transparent 2px 60px),
    repeating-linear-gradient(90deg,rgba(0,0,0,.08) 0 2px,transparent 2px 118px);}
.hall-hero-in{position:relative;z-index:1;max-width:820px;margin:0 auto;padding:0 clamp(20px,5vw,64px);}
.hall-hero .h-plaque{display:inline-block;font-family:var(--e-title);font-size:12px;letter-spacing:5px;
  color:var(--e-oxford);background:var(--e-gold-soft);padding:5px 16px;border-radius:3px;text-transform:uppercase;margin-bottom:22px;}
.hall-hero h1{font-family:var(--e-title);font-weight:700;font-size:clamp(32px,5vw,58px);letter-spacing:2px;color:#fff;line-height:1.12;margin-bottom:8px;}
.hall-hero .cn{font-family:var(--e-cn);font-size:clamp(16px,2vw,20px);color:var(--e-gold-soft);letter-spacing:5px;margin-bottom:22px;}
.hall-hero p{font-family:var(--e-cn);font-size:16px;line-height:1.9;color:rgba(231,221,198,.82);max-width:600px;margin:0 auto;}

.hall-body{padding:clamp(54px,8vw,96px) 0;}
.hall-lead{text-align:center;max-width:640px;margin:0 auto clamp(36px,5vw,54px);}
/* 模块网格 */
.mods{display:grid;gap:20px;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));max-width:1000px;margin:0 auto;}
.mod{position:relative;display:flex;flex-direction:column;background:var(--e-parch-2);border:1px solid var(--e-rule);
  border-radius:11px;padding:26px 24px;text-decoration:none;color:inherit;overflow:hidden;
  transition:transform .28s var(--e-ease),box-shadow .28s var(--e-ease),border-color .28s ease;}
.mod:hover{transform:translateY(-5px);box-shadow:0 18px 40px rgba(42,38,32,.16);border-color:var(--e-gold);}
.mod .m-no{font-family:var(--e-title);font-size:13px;letter-spacing:2px;color:var(--e-gold);margin-bottom:14px;}
.mod .m-ic{width:46px;height:46px;margin-bottom:16px;color:var(--e-oxford);}
.mod .m-ic svg{width:100%;height:100%;display:block;}
.mod .m-t{font-family:var(--e-cn);font-size:20px;font-weight:700;color:var(--e-ink);margin-bottom:4px;}
.mod .m-en{font-family:var(--e-title);font-size:12px;letter-spacing:1.5px;color:var(--e-muted);text-transform:uppercase;margin-bottom:12px;}
.mod .m-d{font-family:var(--e-cn);font-size:14px;line-height:1.75;color:var(--e-ink-soft);flex:1;}
.mod .m-go{margin-top:16px;font-family:var(--e-title);font-size:13px;letter-spacing:1px;color:var(--e-oxford);display:inline-flex;align-items:center;gap:7px;}
.mod .m-go .arw{transition:transform .2s ease;}
.mod:hover .m-go .arw{transform:translateX(4px);}
/* 通电重器：词汇引擎，跨两列、金框 */
.mod.flagship{grid-column:1/-1;flex-direction:row;align-items:center;gap:28px;flex-wrap:wrap;
  background:linear-gradient(120deg,var(--e-parch-2),rgba(177,138,76,.12));border-color:var(--e-gold);}
.mod.flagship .m-ic{flex:none;width:60px;height:60px;margin-bottom:0;color:var(--e-gold);}
.mod.flagship .m-main{flex:1;min-width:240px;}
.mod.flagship .m-t{font-size:24px;}
.mod.flagship .m-badge{position:absolute;top:16px;right:18px;font-family:var(--e-title);font-size:10px;letter-spacing:1px;
  background:var(--e-gold);color:#fff;padding:3px 10px;border-radius:20px;text-transform:uppercase;}
.mod.flagship .e-btn{flex:none;}
/* 未开放模块 */
.mod.soon{opacity:.9;}
.mod .m-tag{position:absolute;top:16px;right:18px;font-family:var(--e-title);font-size:9px;letter-spacing:1px;
  padding:3px 9px;border-radius:20px;text-transform:uppercase;background:transparent;color:var(--e-muted);border:1px solid var(--e-rule);}
@media(max-width:600px){
  .mod.flagship{flex-direction:column;align-items:flex-start;gap:16px;}
}