/* ===========================================================
   Layout B — 侧栏 + 内容流  |  米白纸感 · 深绿 · 圆角柔和
   =========================================================== */
:root{
  --brand:#14532d; --brand-2:#0f3d22; --accent:#e76f51;
  --bg:#fbf8f3; --bg-2:#f3eee5; --card:#ffffff; --card-2:#f6f2ea;
  --line:#e2dbcf; --text:#1f2421; --muted:#6b6f6a; --radius:18px;
  --f-head:"Fraunces",Georgia,"Times New Roman",serif;
  --f-body:"Plus Jakarta Sans","Segoe UI",system-ui,sans-serif;
}
body{background:var(--bg);color:var(--text);font-family:var(--f-body);font-size:15.5px;line-height:1.75}
h1,h2,h3,h4{font-family:var(--f-head);font-weight:600;letter-spacing:-.015em}
a:hover{color:var(--brand)}
.wb-wrap{width:min(1200px,94vw);margin-inline:auto}
.wb-shell{display:grid;grid-template-columns:300px minmax(0,1fr);gap:38px;padding:32px 0 56px;align-items:start}

/* header */
.gx-header{background:#fbf8f3;border-bottom:1px solid var(--line);backdrop-filter:none;position:sticky}
.gx-header .wrap{height:68px;gap:26px}
.brand{font-family:var(--f-head);font-weight:700;font-size:1.18rem;color:var(--brand)}
.brand-mark{background:var(--brand);color:#fbf8f3;border-radius:50%;width:34px;height:34px}
.nav{color:#5c625d;font-size:.9rem;font-weight:500}
.nav a:hover{color:var(--brand)}
.nav a::after{background:var(--accent);height:2px}
.search input[type=search]{background:#fff;border:1px solid var(--line);color:var(--text);border-radius:10px}

/* 左栏 */
.wb-side{position:sticky;top:88px}
.wb-side__k{font-family:var(--f-body);font-size:.7rem;letter-spacing:.2em;text-transform:uppercase;color:var(--accent);font-weight:800;margin:0 0 10px}
.wb-side__list{list-style:none;margin:0 0 20px;padding:0;border-top:1px solid var(--line)}
.wb-side__list li{border-bottom:1px solid var(--line)}
.wb-side__list a{display:grid;grid-template-columns:46px 1fr auto;align-items:center;gap:10px;padding:8px 2px}
.wb-side__img{width:46px;height:34px;object-fit:cover;border-radius:8px;background:var(--card-2)}
.wb-side__n{font-size:.89rem;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.wb-side__c{font-size:.72rem;color:var(--muted);font-variant-numeric:tabular-nums;background:var(--card-2);padding:1px 7px;border-radius:999px}
.wb-side__list a:hover .wb-side__n{color:var(--brand)}
.wb-side__card{background:var(--brand);color:#f4f7f2;border-radius:16px;padding:18px}
.wb-side__card b{display:block;font-family:var(--f-head);font-size:1.9rem;line-height:1}
.wb-side__card span{display:block;font-size:.76rem;color:#c3d6c8;margin:6px 0 12px}
.wb-side__all{display:inline-block;font-size:.8rem;font-weight:700;color:#0f3d22;background:#f0e7d6;padding:7px 13px;border-radius:999px}

/* 主区 */
.wb-main{min-width:0}
.wb-h1{margin:0 0 14px;font-size:clamp(1.3rem,2.4vw,1.85rem);line-height:1.22;color:var(--brand);
  padding-bottom:10px;border-bottom:2px solid var(--text)}
.wb-lead{position:relative;display:block;border-radius:22px;overflow:hidden;background:#ddd6c9}
.wb-lead__img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .6s}
.wb-lead:hover .wb-lead__img{transform:scale(1.03)}
.wb-lead__in{position:absolute;inset:auto 0 0 0;padding:52px 26px 22px;display:flex;flex-direction:column;gap:6px;
  background:linear-gradient(180deg,transparent,rgba(12,24,16,.42) 30%,rgba(10,20,14,.92))}
.wb-lead__flag{align-self:flex-start;font-size:.67rem;letter-spacing:.18em;text-transform:uppercase;font-weight:800;
  color:#111;background:var(--accent);padding:3px 9px;border-radius:4px;margin-bottom:4px}
.wb-lead h1{margin:0;color:#fff;font-size:clamp(1.5rem,3.2vw,2.3rem);line-height:1.15}
.wb-lead__m{font-size:.8rem;color:#d5ddd6}

/* 双栏对决 */
.wb-duel{display:grid;grid-template-columns:1fr 1fr;gap:0;margin:34px 0 30px;border-top:2px solid var(--text)}
.wb-duel__col{padding:16px 22px 4px 0}
.wb-duel__col--alt{border-left:1px solid var(--line);padding:16px 0 4px 24px}
.wb-h2{display:flex;align-items:baseline;justify-content:space-between;gap:8px;margin:0 0 10px;
  font-family:var(--f-body);font-size:.74rem;letter-spacing:.16em;text-transform:uppercase;font-weight:800;color:var(--text)}
.wb-h2 i{font-style:normal;color:var(--accent);font-size:.66rem;letter-spacing:.1em}
.wb-h2--solo{font-family:var(--f-head);font-size:1.25rem;letter-spacing:-.01em;text-transform:none;color:var(--text);margin:30px 0 14px}
.wb-row{display:grid;grid-template-columns:62px 1fr auto;align-items:center;gap:11px;padding:8px 0;border-bottom:1px solid var(--line)}
.wb-row:last-child{border-bottom:0}
.wb-row__img{width:62px;height:46px;object-fit:cover;border-radius:9px;background:var(--card-2)}
.wb-row__t{display:flex;flex-direction:column;min-width:0}
.wb-row__t b{font-family:var(--f-body);font-size:.89rem;font-weight:700;line-height:1.3;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.wb-row__t span{font-size:.72rem;color:var(--muted)}
.wb-row em{font-style:normal;font-size:.74rem;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums}
.wb-duel__col--alt .wb-row em{color:var(--accent)}

/* 错落双列 */
.wb-stagger{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.wb-card{display:block;background:var(--card);border:1px solid var(--line);border-radius:16px;overflow:hidden;transition:transform .25s,box-shadow .25s}
.wb-card:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(28,34,29,.09)}
.wb-card__img{width:100%;height:174px;object-fit:cover;background:var(--card-2)}
.wb-card--tall .wb-card__img{height:248px}
.wb-card__b{display:block;padding:12px 14px 14px}
.wb-card__c{display:inline-block;font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;font-weight:800;color:var(--brand);margin-bottom:5px}
.wb-card__b b{display:block;font-family:var(--f-head);font-size:1rem;line-height:1.3;font-weight:600}
.wb-card__m{display:block;font-size:.73rem;color:var(--muted);margin-top:5px}

/* 文末手记 */
.wb-notes{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:34px;padding-top:20px;border-top:1px solid var(--line)}
.wb-note{display:block}
.wb-note b{display:block;font-family:var(--f-head);font-size:.92rem;font-weight:600;line-height:1.35}
.wb-note span{font-size:.7rem;color:var(--muted);letter-spacing:.05em}

@media (max-width:980px){
  .wb-shell{grid-template-columns:1fr;gap:24px}
  .wb-side{position:static}
  .wb-side__list{display:grid;grid-template-columns:1fr 1fr;gap:0 18px}
  .wb-duel{grid-template-columns:1fr;border-top-width:2px}
  .wb-duel__col--alt{border-left:0;border-top:1px solid var(--line);padding:16px 0 4px}
  .wb-stagger{grid-template-columns:1fr}
  .wb-card--tall .wb-card__img{height:200px}
  .wb-notes{grid-template-columns:1fr}
}

/* 目录索引 12 格 */
.wb-az__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.wb-az__i{display:block;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#fff;transition:box-shadow .2s,transform .2s}
.wb-az__i:hover{box-shadow:0 6px 16px rgba(20,83,45,.12);transform:translateY(-2px)}
.wb-az__img{width:100%;aspect-ratio:4/3;object-fit:cover;display:block}
.wb-az__i b{display:block;padding:8px 11px 9px;font-size:.83rem;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* 标签云 */
.wb-tags__c{display:flex;flex-wrap:wrap;gap:8px}
.wb-tags__c a{border:1px solid var(--line);border-radius:999px;padding:5px 14px;font-size:.8rem;color:#2f4a3a;background:#fff;transition:all .2s}
.wb-tags__c a:hover{border-color:#14532d;color:#14532d;background:#eef5ef}
.wb-tags__c i{font-style:normal;color:#7d8f82;font-size:.68rem}

/* FAQ */
.wb-faq{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 22px;margin-bottom:26px}
.wb-faq details{border-bottom:1px solid var(--line);padding:9px 2px}
.wb-faq details:last-of-type{border-bottom:0}
.wb-faq summary{cursor:pointer;font-weight:700;font-size:.92rem;list-style:none;color:#1c3326}
.wb-faq summary:hover{color:#14532d}
.wb-faq details p{margin:7px 0 4px;font-size:.87rem;color:#3d5245}
.wb-faq details p a{color:#14532d}
.wb-faq__para{margin:13px 0 0;font-size:.86rem;color:#5d6f62;line-height:1.85}
.wb-faq__para a{color:#14532d}

@media (max-width:900px){
  .wb-az__grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:600px){
  .wb-az__grid{grid-template-columns:repeat(2,1fr)}
}