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[lang=zh-Hans]{font-size:clamp(1.6rem,4.6vw,2.25rem);line-height:1.14}.section-title [lang=en]{color:var(--ink-soft);font-size:clamp(1.28rem,3.4vw,1.7rem);line-height:1.16}.domain-grid{border:1px solid var(--border);background:var(--border);grid-template-columns:1fr;gap:1px;margin-top:clamp(24px,4vw,34px);display:grid}.domain-card{background:var(--surface);min-height:clamp(176px,24vw,220px);padding:clamp(20px,3vw,28px)}.domain-meta{justify-content:space-between;align-items:flex-start;gap:16px;margin-bottom:clamp(24px,4vw,34px);display:flex}.domain-number{color:var(--accent-strong);font-size:clamp(.72rem,1.2vw,.78rem);font-weight:850;line-height:1;display:block}.domain-icon{width:clamp(24px,4vw,34px);height:clamp(24px,4vw,34px);color:var(--accent);opacity:.84;stroke-width:1.8px}.domain-title{color:var(--ink);letter-spacing:0;text-wrap:balance;gap:5px}.domain-title [lang=zh-Hans]{font-size:clamp(1.34rem,2.6vw,1.62rem);line-height:1.08}.domain-title [lang=en]{color:var(--ink-soft);font-size:clamp(1.02rem,1.9vw,1.18rem);font-weight:650;line-height:1.1}.domain-description{color:var(--muted);text-wrap:pretty;gap:7px;margin-top:clamp(14px,2.4vw,18px)}.domain-description [lang=zh-Hans]{color:var(--ink-soft);font-size:clamp(.96rem,1.4vw,1rem);line-height:1.5}.domain-description [lang=en]{font-size:clamp(.92rem,1.25vw,.96rem);line-height:1.48}.callout{border-left:4px solid var(--accent);background:var(--panel);max-width:52rem;color:var(--ink);text-wrap:pretty;gap:clamp(7px,1.4vw,10px);padding:clamp(20px,3vw,28px);font-weight:720}.callout [lang=zh-Hans]{font-size:clamp(1.08rem,2vw,1.24rem);line-height:1.36}.callout [lang=en]{color:var(--ink-soft);font-size:clamp(.98rem,1.5vw,1.08rem);line-height:1.36}.closing{color:var(--ink);font-weight:680}.focus-sections{gap:clamp(16px,2.6vw,24px);padding:8px 0 clamp(64px,9vw,96px);display:grid}.lessons-teaser{padding:var(--section-block) 0;border-top:1px solid 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[lang=zh-Hans]{font-size:clamp(2.05rem,1.25rem + 4vw,4.25rem);line-height:1.04}.page-title [lang=en]{color:var(--ink-soft);font-size:clamp(1.35rem,.95rem + 2.4vw,2.82rem);line-height:1.1}.lesson-body{gap:clamp(34px,6vw,56px);max-width:58rem;display:grid}.lesson-map{border-block:1px solid var(--border);gap:clamp(14px,2.6vw,18px);max-width:58rem;margin-bottom:clamp(34px,6vw,56px);padding-block:clamp(18px,3.6vw,26px);display:grid}.lesson-map-title{color:var(--ink);gap:4px}.lesson-map-title [lang=zh-Hans]{font-size:clamp(1.05rem,2vw,1.2rem);line-height:1.14}.lesson-map-title [lang=en]{color:var(--muted);text-transform:uppercase;font-size:clamp(.84rem,1.35vw,.92rem);line-height:1.14}.lesson-map-list{background:var(--border);grid-template-columns:repeat(auto-fit,minmax(min(100%,16rem),1fr));gap:1px;margin:0;padding:0;list-style:none;display:grid}.lesson-map-list li{background:var(--surface);min-width:0}.lesson-map-list button{width:100%;min-width:0;height:100%;color:var(--ink);cursor:pointer;font:inherit;text-align:left;background:0 0;border:0;grid-template-columns:auto minmax(0,1fr);gap:10px;padding:clamp(11px,2.2vw,14px);text-decoration:none;display:grid}.lesson-map-list button:hover{background:var(--panel)}.lesson-map-number{color:var(--accent);font-size:.72rem;font-weight:850;line-height:1.2}.lesson-map-text{gap:3px;min-width:0;display:grid}.lesson-map-text [lang=zh-Hans]{color:var(--ink-soft);font-size:clamp(.88rem,1.45vw,.96rem);font-weight:760;line-height:1.18}.lesson-map-text [lang=en]{color:var(--muted);font-size:clamp(.78rem,1.2vw,.86rem);font-weight:680;line-height:1.18}.lesson-section{scroll-margin-top:calc(var(--header-height) + 18px);border-top:1px solid var(--border);gap:clamp(18px,3vw,24px);padding-top:clamp(24px,4vw,34px);display:grid}.lesson-section-title{color:var(--ink);text-wrap:balance;gap:6px}.lesson-section-title [lang=zh-Hans]{font-size:clamp(1.35rem,3vw,1.78rem);line-height:1.12}.lesson-section-title [lang=en]{color:var(--ink-soft);font-size:clamp(1.06rem,2vw,1.24rem);line-height:1.14}.lesson-term-grid{grid-template-columns:repeat(auto-fit,minmax(min(100%,15rem),1fr));gap:clamp(10px,2vw,14px);display:grid}.lesson-term{border:1px solid var(--border);background:var(--surface);align-content:start;gap:clamp(10px,2vw,14px);min-width:0;padding:clamp(16px,3vw,22px);display:grid}.lesson-term-title{color:var(--ink);gap:4px}.lesson-term-title [lang=zh-Hans]{font-size:clamp(1.02rem,2vw,1.14rem);font-weight:780;line-height:1.16}.lesson-term-title [lang=en]{color:var(--accent);font-size:clamp(.88rem,1.5vw,.96rem);font-weight:760;line-height:1.16}.lesson-term-definition{color:var(--muted);text-wrap:pretty;gap:6px}.lesson-term-definition [lang=zh-Hans]{color:var(--ink-soft);font-size:clamp(.94rem,1.55vw,1rem);line-height:1.58}.lesson-term-definition [lang=en]{font-size:clamp(.9rem,1.35vw,.96rem);line-height:1.54}.lesson-step-list{border:1px solid var(--border);background:var(--border);counter-reset:lesson-step;gap:1px;margin:0;padding:0;list-style:none;display:grid}.lesson-step{background:var(--surface);counter-increment:lesson-step;grid-template-columns:auto minmax(0,1fr);gap:clamp(14px,3vw,18px);min-width:0;padding:clamp(16px,3vw,22px);display:grid}.lesson-step:before{content:counter(lesson-step, decimal-leading-zero);border:1px solid var(--border);width:clamp(34px,8vw,42px);height:clamp(34px,8vw,42px);color:var(--accent);border-radius:50%;place-items:center;font-size:.78rem;font-weight:850;line-height:1;display:grid}.lesson-step-title{color:var(--ink);gap:4px}.lesson-step-title [lang=zh-Hans]{font-size:clamp(1rem,2vw,1.12rem);line-height:1.18}.lesson-step-title [lang=en]{color:var(--ink-soft);font-size:clamp(.9rem,1.5vw,.98rem);font-weight:680;line-height:1.18}.lesson-step-body{color:var(--muted);text-wrap:pretty;grid-column:2;gap:6px}.lesson-step-body [lang=zh-Hans]{color:var(--ink-soft);font-size:clamp(.94rem,1.55vw,1rem);line-height:1.58}.lesson-step-body [lang=en]{font-size:clamp(.9rem,1.35vw,.96rem);line-height:1.54}.lesson-prompt-list{gap:clamp(12px,2vw,16px);display:grid}.lesson-prompt{border-left:3px solid var(--accent-strong);background:var(--panel);gap:clamp(10px,2vw,14px);min-width:0;margin:0;padding:clamp(16px,3vw,22px);display:grid}.lesson-prompt figcaption,.lesson-prompt blockquote{min-width:0;margin:0}.lesson-prompt figcaption{color:var(--accent);text-transform:uppercase;gap:3px;font-size:clamp(.78rem,1.4vw,.86rem);font-weight:800;line-height:1.12;display:grid}.lesson-prompt figcaption [lang=en]{color:var(--muted);text-transform:none}.lesson-prompt blockquote{color:var(--ink);text-wrap:pretty;gap:7px;display:grid}.lesson-prompt blockquote [lang=zh-Hans]{font-size:clamp(.98rem,1.7vw,1.06rem);line-height:1.58}.lesson-prompt blockquote [lang=en]{color:var(--ink-soft);font-size:clamp(.92rem,1.45vw,.98rem);line-height:1.54}.lesson-section--tactical{background:var(--panel);border-top-color:var(--accent);padding:clamp(20px,3.5vw,30px)}.lesson-section-kicker{color:var(--accent);letter-spacing:.08em;text-transform:uppercase;gap:8px;font-size:clamp(.74rem,1.3vw,.82rem);font-weight:800;line-height:1.1;display:inline-flex}.lesson-section-kicker [lang=en]{color:var(--muted);text-transform:none;letter-spacing:0}.lesson-step-command{border:1px solid var(--border);background:var(--bg);color:var(--ink);font-family:var(--mono);white-space:pre-wrap;word-break:break-all;grid-column:2;margin:0;padding:clamp(12px,2.4vw,16px);font-size:clamp(.82rem,1.4vw,.92rem);line-height:1.5;overflow-x:auto}.lesson-step-command code{background:0 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a{width:fit-content;color:var(--accent);align-items:flex-start;gap:8px;text-decoration:none;display:inline-flex}.source-title{gap:4px;font-weight:720}.source-title [lang=en]{color:var(--muted)}.source-meta{color:var(--muted);flex-wrap:wrap;gap:6px 14px;margin:0;font-size:.88rem;display:flex}.source-meta span{gap:6px;display:inline-flex}.focus-section{scroll-margin-top:calc(var(--header-height) + 68px);border:1px solid var(--border);background:var(--surface);min-height:clamp(240px,34vw,380px);padding:clamp(24px,4vw,36px)}.focus-section-header{justify-content:space-between;align-items:flex-start;gap:clamp(18px,4vw,32px);display:flex}.focus-title{color:var(--ink);letter-spacing:0;text-wrap:balance;gap:6px}.focus-title [lang=zh-Hans]{font-size:clamp(1.5rem,3.4vw,1.85rem);line-height:1.08}.focus-title [lang=en]{color:var(--ink-soft);font-size:clamp(1.08rem,2.2vw,1.28rem);line-height:1.1}.focus-icon{width:clamp(32px,7vw,52px);height:clamp(32px,7vw,52px);color:var(--accent);opacity:.82;stroke-width:1.65px;flex:none}.empty-state{border-top:1px dashed var(--border);min-height:clamp(130px,18vw,190px);margin-top:clamp(28px,4vw,40px)}[lang=zh-Hans]{font-family:"PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", var(--sans)}[lang=zh-Hans],[lang=en]{overflow-wrap:break-word}[lang=en]{-webkit-hyphens:auto;hyphens:auto}@media (width>=480px){.domain-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.domain-card:last-child{grid-column:1/-1}}@media (width>=900px){.domain-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.domain-card:last-child{grid-column:auto}}@media (width>=920px){.lessons-teaser{grid-template-columns:minmax(0,.72fr) minmax(0,1fr)}}@media (width>=700px){.hero{gap:var(--hero-gap);padding:var(--hero-block) 0 clamp(30px, 4vw, 56px)}.site-shell{--brand-padding:clamp(20px, 2.4vw, 28px)}}@media (width>=980px){.narrative{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}}@media (height<=700px) and (width<=520px){.site-shell{--brand-width:clamp(142px, 48vw, 170px);--brand-height:clamp(76px, 24vw, 92px);--brand-padding:12px;--brand-symbol-size:clamp(2.2rem, 11vw, 2.55rem);--title-zh-size:clamp(1.72rem, 9.2vw, 1.95rem);--title-en-size:clamp(1.16rem, 6.2vw, 1.32rem);--lede-zh-size:.95rem;--lede-en-size:.9rem}.hero{gap:clamp(12px,3vw,16px);padding:clamp(12px,3vw,16px) 0 10px}.brand-latin{font-size:.68rem}.eyebrow{font-size:.72rem}}