/* ==========================================================================
   fudao.html 考前辅导页 私有样式
   版式：居中标题hero+大图 / 四宫格课程卡 / 左教师侧栏+右班期表
   ========================================================================== */

/* ---------- Hero ---------- */
.fd-hero{padding:140px 0 60px;background:linear-gradient(180deg,var(--cream-2),var(--cream))}
.fd-hero-head{max-width:760px;margin:0 auto;text-align:center}
.fd-kicker{font-size:13px;letter-spacing:3px;color:var(--green-deep);font-weight:600;margin-bottom:16px}
.fd-title{font-size:clamp(30px,4.6vw,48px);line-height:1.28;letter-spacing:1px}
.fd-title span{color:var(--wood-deep)}
.fd-desc{margin:18px auto 0;max-width:620px;font-size:15.5px;line-height:1.9}
.fd-hero-actions{margin-top:26px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.fd-hero-photo{margin-top:44px;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-lg)}
.fd-hero-photo img{width:100%;aspect-ratio:16/9;object-fit:cover}

/* ---------- 课程矩阵 ---------- */
.fd-course-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.fd-course-card{background:var(--white);border-radius:var(--radius);padding:28px 24px;box-shadow:var(--shadow-sm);position:relative;transition:transform .3s var(--ease)}
.fd-course-card:hover{transform:translateY(-5px)}
.fd-course-tag{display:inline-block;font-size:12px;letter-spacing:2px;font-weight:700;color:#fff;background:var(--wood);padding:4px 12px;border-radius:999px;margin-bottom:14px}
.fd-tag-green{background:var(--green-deep)}
.fd-course-card h3{font-size:17px;margin-bottom:10px}
.fd-course-card p{font-size:14px;line-height:1.75}
.fd-course-meta{margin-top:14px;display:flex;flex-direction:column;gap:6px;border-top:1px dashed var(--line);padding-top:12px}
.fd-course-meta li{font-size:13px;color:var(--ink-faint);padding-left:16px;position:relative}
.fd-course-meta li::before{content:"";position:absolute;left:0;top:8px;width:6px;height:6px;border-radius:50%;background:var(--green)}

/* ---------- 教师侧栏 + 班期表 ---------- */
.fd-teacher-grid{display:grid;grid-template-columns:340px 1fr;gap:40px;align-items:start}
.fd-side{display:flex;flex-direction:column;gap:22px}
.fd-side-card{background:var(--white);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-sm)}
.fd-side-photo{margin-bottom:16px;border-radius:var(--radius-sm);overflow:hidden}
.fd-side-photo img{width:100%;aspect-ratio:4/3;object-fit:cover}
.fd-side-card h3{font-size:17px;margin-bottom:10px;color:var(--green-dark)}
.fd-side-card p{font-size:14px;line-height:1.8}
.fd-side-tips{background:linear-gradient(135deg,var(--cream-2),#f6eee0)}
.fd-side-tips ul{display:flex;flex-direction:column;gap:10px;margin-top:10px}
.fd-side-tips li{font-size:14px;color:var(--ink-soft);padding-left:22px;position:relative;line-height:1.7}
.fd-side-tips li::before{content:"!";position:absolute;left:0;top:0;width:16px;height:16px;border-radius:50%;background:var(--wood);color:#fff;font-size:11px;display:flex;align-items:center;justify-content:center;font-weight:700}
.fd-schedule{background:var(--white);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow-sm)}
.fd-table{width:100%;border-collapse:collapse;font-size:14.5px;min-width:520px}
.fd-table th{background:var(--cream-2);color:var(--green-dark);padding:13px 14px;text-align:left;font-weight:600;border-bottom:2px solid var(--line)}
.fd-table td{padding:13px 14px;border-bottom:1px solid var(--line);color:var(--ink-soft)}
.fd-table tr:last-child td{border-bottom:0}
.fd-schedule-note{font-size:13px;color:var(--ink-faint);margin-top:14px;line-height:1.7}

/* ---------- 适用人群 ---------- */
.fd-who-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.fd-who-card{background:var(--cream-3);border-left:4px solid var(--green);border-radius:0 var(--radius-sm) var(--radius-sm) 0;padding:24px 22px}
.fd-who-card h3{font-size:16.5px;margin-bottom:8px}
.fd-who-card p{font-size:14px;line-height:1.8}

/* ---------- 承诺 ---------- */
.fd-promise{background:var(--green-dark);color:#eef2e7;padding:48px 0}
.fd-promise-inner{max-width:760px;margin:0 auto;text-align:center}
.fd-promise-inner h2{color:#fff;font-size:24px;margin-bottom:14px}
.fd-promise-inner p{color:#d5decb;font-size:15px;line-height:1.9}
.fd-promise-inner b{color:#ffd9a8}

/* ---------- FAQ ---------- */
.fd-faq-list{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.fd-faq-item{background:var(--cream-3);border:1px solid var(--line);border-radius:var(--radius-sm);padding:0 22px}
.fd-faq-item[open]{background:var(--white);box-shadow:var(--shadow-sm)}
.fd-faq-item summary{cursor:pointer;font-family:var(--font-serif);font-weight:700;font-size:16px;padding:18px 0;list-style:none;position:relative;padding-right:30px}
.fd-faq-item summary::-webkit-details-marker{display:none}
.fd-faq-item summary::after{content:"+";position:absolute;right:0;top:50%;transform:translateY(-50%);font-size:22px;color:var(--wood);font-weight:400;transition:transform .3s}
.fd-faq-item[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.fd-faq-item p{padding:0 0 18px;font-size:14.5px;line-height:1.9}

/* ---------- 互链 ---------- */
.fd-rel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.fd-rel-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:22px;transition:transform .3s var(--ease)}
.fd-rel-card:hover{transform:translateY(-4px)}
.fd-rel-card h3{font-size:15.5px;margin-bottom:6px;color:var(--green-dark)}
.fd-rel-card p{font-size:13px;line-height:1.6}
.fd-rel-card span{display:inline-block;margin-top:8px;color:var(--wood-deep);font-weight:700}

/* ---------- 底部 CTA ---------- */
.fd-cta{background:var(--wood);padding:64px 0;text-align:center}
.fd-cta-inner{max-width:680px;margin:0 auto}
.fd-cta h2{color:#fff;font-size:clamp(22px,3vw,32px);margin-bottom:10px}
.fd-cta p{color:#f6e8d8;margin-bottom:24px}
.fd-cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .fd-course-grid{grid-template-columns:repeat(2,1fr)}
  .fd-rel-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:900px){
  .fd-teacher-grid{grid-template-columns:1fr;gap:26px}
  .fd-who-grid{grid-template-columns:1fr}
}
@media (max-width:680px){
  .fd-course-grid,.fd-rel-grid{grid-template-columns:1fr}
}