/* 7 天，练好一场演讲 —— 专属样式（复用 content-library.css 基础类） */
.sd-hero h1 em{font-style:italic;color:var(--ink);font-weight:400}
.sd-pill{background:var(--paper-high);color:var(--ink-soft);padding:7px 12px;border-radius:999px;display:inline-block;letter-spacing:.08em}
.sd-accent-strip{background:#1c1c18;padding:11px 0}
.sd-accent-strip>div{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:#d5d1c6;font-size:11px}
.sd-accent-strip span:first-child{color:#fe8357}
.sd-accent-strip span::first-letter{font-size:16px}
.sd-accent-strip small{color:#8b867c;font-size:10px}

/* 105 分钟投入区块 */
.sd-minutes{background:var(--paper-low);padding:68px 0 78px}
.sd-minutes-grid{display:grid;grid-template-columns:1fr 1.3fr;gap:70px;align-items:center}
.sd-minutes-copy h2{font:400 38px/1.25 var(--serif);letter-spacing:-.04em;margin:9px 0 18px}
.sd-minutes-copy>p:not(.eyebrow){font:15px/1.9 var(--reading);color:var(--ink-soft);margin:0 0 25px}
.sd-minutes-formula{display:flex;align-items:baseline;gap:12px;margin:22px 0 6px}
.sd-minutes-formula b{font:500 54px/1 var(--serif);color:var(--orange)}
.sd-minutes-formula span{font:12px var(--sans);color:var(--muted)}
.sd-blocks{display:grid;grid-template-columns:repeat(7,1fr);gap:9px}
.sd-block{background:#fff;border-radius:5px;padding:14px 8px;text-align:center;box-shadow:0 1px 6px #1c1c1809;position:relative;border-top:3px solid var(--paper-high)}
.sd-block small{font:600 9px var(--sans);letter-spacing:.06em;color:var(--orange);display:block}
.sd-block strong{font:500 22px var(--serif);display:block;margin:8px 0 4px}
.sd-block span{font-size:9px;color:var(--muted)}
.sd-block-total{grid-column:1/-1;background:var(--ink);color:var(--paper);border-radius:5px;margin-top:9px;padding:16px;display:flex;align-items:baseline;justify-content:center;gap:10px;border-top:none}
.sd-block-total b{font:500 30px var(--serif);color:#fe8357}
.sd-block-total span{font-size:11px;color:#c9c4b8}

/* 主题文章区 */
.sd-source{background:var(--paper);padding:78px 0 85px}
.sd-source-heading{text-align:center;max-width:720px;margin:0 auto 30px}
.sd-source-heading h2{font:400 34px var(--serif);letter-spacing:-.03em;margin:9px 0 11px}
.sd-source-heading>p{font:12px/1.8 var(--reading);color:var(--muted);margin:0}
.sd-article{background:#fff;max-width:720px;margin:auto;padding:40px 46px;border-radius:6px;box-shadow:0 3px 18px #1c1c180b;border:1px solid #e7e2d8}
.sd-article small{font:600 9px var(--sans);letter-spacing:.08em;color:var(--orange);display:block;margin-bottom:18px}
.sd-article h3{font:500 27px/1.3 var(--serif);letter-spacing:-.02em;margin:0 0 22px}
.sd-article .sd-lead{font:15px/1.9 var(--reading);color:var(--ink-soft);margin:0 0 26px}
.sd-article .sd-secret{margin:0 0 24px;padding-left:22px;border-left:2px solid var(--orange-light)}
.sd-article .sd-secret h4{font:500 19px var(--serif);margin:0 0 9px}
.sd-article .sd-secret p{font:14px/1.85 var(--reading);color:var(--ink-soft);margin:0 0 7px}
.sd-article .sd-secret em{display:block;font:italic 13px/1.7 var(--serif);color:var(--muted)}
.sd-article .sd-ending{font:15px/1.9 var(--reading);margin:0;padding-top:6px}
.sd-article .sd-ending strong{color:var(--orange)}

/* 7 天训练区 */
.sd-plan{background:var(--paper-low);padding:76px 0 88px}
.sd-plan-heading{text-align:center;max-width:680px;margin:0 auto 30px}
.sd-plan-heading h2{font:400 35px var(--serif);letter-spacing:-.03em;margin:9px 0 11px}
.sd-plan-heading>p{font:12px/1.8 var(--reading);color:var(--muted);margin:0}
.sd-days{display:grid;grid-template-columns:repeat(2,1fr);gap:13px;max-width:900px;margin:auto}
.sd-day{background:#fff;border-radius:6px;padding:24px 24px 20px;box-shadow:0 1px 7px #1c1c1809;border-top:3px solid var(--paper-high);display:flex;flex-direction:column}
.sd-day.featured{grid-column:1/-1;border-top-color:var(--orange);background:linear-gradient(135deg,#fff,#fdf6f1)}
.sd-day header{display:flex;align-items:center;justify-content:space-between;gap:10px}
.sd-day header b{display:grid;place-items:center;width:38px;height:38px;border-radius:50%;background:var(--paper-high);font:600 13px var(--sans)}
.sd-day.featured header b{background:var(--orange);color:#fff}
.sd-day header small{font:600 9px var(--sans);letter-spacing:.08em;color:var(--orange);text-transform:uppercase}
.sd-day h3{font:500 21px var(--serif);margin:16px 0 7px}
.sd-day>p{font:11px/1.8 var(--reading);color:var(--ink-soft);margin:0 0 15px}
.sd-day-goal{background:var(--paper-low);border-radius:5px;padding:12px 13px;margin-bottom:11px}
.sd-day-goal small{display:block;font:600 8px var(--sans);letter-spacing:.07em;color:var(--orange);margin-bottom:5px}
.sd-day-goal p{font:11px/1.7 var(--reading);color:var(--ink-soft);margin:0}
.sd-day-metric{margin-top:auto}
.sd-day-metric small{display:block;font:600 8px var(--sans);letter-spacing:.07em;color:var(--sage);margin-bottom:5px}
.sd-day-metric p{font:11px/1.7 var(--reading);color:var(--ink-soft);margin:0;border-top:1px solid #cdc5bc66;padding-top:11px}

/* 训练原则 */
.sd-principles{background:var(--paper);padding:72px 0 85px}
.sd-principles-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:13px}
.sd-principle{background:var(--paper-low);border-radius:6px;padding:26px 22px}
.sd-principle b{display:grid;place-items:center;width:30px;height:30px;border-radius:50%;background:var(--orange);color:#fff;font:600 13px var(--sans);margin-bottom:17px}
.sd-principle h3{font:500 19px var(--serif);margin:0 0 9px}
.sd-principle p{font:11px/1.8 var(--reading);color:var(--ink-soft);margin:0}

/* 扫码打开提词材料（二维码引导） */
.sd-qr{display:flex;align-items:center;gap:22px;background:var(--paper-low);border:1px solid var(--line);border-radius:8px;padding:18px 20px;margin:26px 0 8px}
.sd-qr img{width:120px;height:120px;border-radius:6px;flex-shrink:0}
.sd-qr-copy p{font:italic 14px/1.7 var(--serif);color:var(--ink-soft);margin:0 0 9px}
.sd-qr-copy small{font:600 9px var(--sans);letter-spacing:.08em;color:var(--orange);text-transform:uppercase;display:block;margin-bottom:7px}
.sd-qr-copy b{font:500 15px var(--serif)}
.sd-qr-copy .sd-qr-link{display:inline-block;margin-top:8px;font-size:11px;color:var(--muted)}
.sd-qr-copy .sd-qr-link:hover{color:var(--ink)}
@media(max-width:650px){.sd-qr{flex-direction:column;align-items:flex-start;gap:14px}.sd-qr img{width:150px;height:150px}}

/* 结束 / CTA */
.sd-closing{text-align:center;background:#1c1c18;padding:80px 20px 90px;color:#f4f2ea}
.sd-closing>p{font:32px var(--serif);margin:0 0 10px;color:#fe8357}
.sd-closing h2{font:400 30px/1.5 var(--serif);margin:0 0 15px;color:#f4f2ea}
.sd-closing>span{font:12px var(--reading);color:#a8a294}
.sd-closing>div{display:flex;justify-content:center;gap:10px;margin-top:27px}
.sd-closing .library-button.secondary{background:#2a2a25;color:#f4f2ea}

@media(max-width:1050px){
  .sd-minutes-grid{grid-template-columns:1fr;gap:38px}
  .sd-principles-grid{grid-template-columns:1fr}
  .sd-days{grid-template-columns:1fr}
}
@media(max-width:650px){
  .sd-accent-strip>div{display:grid;grid-template-columns:1fr 1fr;gap:13px}
  .sd-minutes-copy h2{font-size:30px}
  .sd-minutes-formula{flex-wrap:wrap;gap:8px}
  .sd-minutes-formula b{font-size:42px}
  .sd-minutes-formula span{font-size:11px;line-height:1.6}
  .sd-blocks{grid-template-columns:repeat(4,1fr)}
  .sd-block{grid-column:span 2}
  .sd-source{padding:60px 18px 66px}
  .sd-article{padding:26px 20px}
  .sd-article h3{font-size:23px}
  .sd-source-heading h2{font-size:29px}
  .sd-plan{padding:60px 18px 66px}
  .sd-plan-heading h2{font-size:29px}
  .sd-day{padding:20px 17px}
  .sd-principles{padding:58px 18px 66px}
  .sd-closing{padding:60px 18px 70px}
  .sd-closing h2{font-size:24px}
  .sd-closing>div{display:grid}
}