:root{--paper:#fafaf7;--ink:#1a1a17;--ink-soft:#45453f;--line:#e5e4de;--marker:#ffe94b;--accent:#1e3a5f;--accent-deep:#16304f;--font-body:-apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;--serif:"Songti SC", "STSong", "Noto Serif CJK SC", "SimSun", serif;--mono:"SF Mono", ui-monospace, "Cascadia Mono", "Consolas", "Courier New", monospace;--w:min(1080px, calc(100vw - 48px))}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{background:var(--paper);color:var(--ink);font-family:var(--font-body);-webkit-font-smoothing:antialiased;font-size:16px;line-height:1.8;overflow-x:clip}body:before{content:"";pointer-events:none;z-index:9999;opacity:.05;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)' opacity='0.6'/%3E%3C/svg%3E");position:fixed;inset:0}::selection{background:var(--marker);color:var(--ink)}a{color:inherit;text-decoration:none}.eyebrow{letter-spacing:.04em;color:var(--ink-soft);margin-bottom:20px;font-size:14px;font-weight:600}h1,h2,h3{font-family:var(--serif);font-weight:900;line-height:1.35}mark{background:linear-gradient(transparent 58%, var(--marker) 58%, var(--marker) 92%, transparent 92%);color:inherit;padding:0 .08em}@media (min-width:861px){mark{white-space:nowrap}}.btn-ink{background:var(--ink);color:var(--paper);border:1.5px solid var(--ink);padding:14px 28px;font-size:15px;font-weight:600;transition:transform .15s,box-shadow .15s;display:inline-block}.btn-ink:hover{box-shadow:4px 4px 0 var(--accent);transform:translate(-2px,-2px)}.btn-accent{background:var(--accent);color:#fff;border:1.5px solid var(--accent);padding:14px 28px;font-size:15px;font-weight:600;transition:background .15s,transform .15s;display:inline-block}.btn-accent:hover{background:var(--accent-deep);transform:translateY(-1px)}.btn-paper{color:inherit;background:0 0;border:1.5px solid;padding:14px 28px;font-size:15px;font-weight:600;transition:transform .15s,box-shadow .15s;display:inline-block}.btn-paper:hover{box-shadow:4px 4px 0 var(--marker);transform:translate(-2px,-2px)}.link-quiet{color:var(--ink-soft);border-bottom:1px solid var(--line);padding-bottom:2px;font-size:15px;transition:color .15s,border-color .15s}.link-quiet:hover{color:var(--ink);border-color:var(--ink)}.site-header{width:var(--w);justify-content:space-between;align-items:baseline;margin:0 auto;padding:28px 0;display:flex}.wordmark{font-family:var(--serif);letter-spacing:.02em;font-size:20px;font-weight:900}.wordmark span{color:var(--ink-soft);margin-left:6px;font-size:14px;font-weight:600}.site-nav{gap:28px;font-size:14px;display:flex}.site-nav a{color:var(--ink-soft);transition:color .15s}.site-nav a:hover{color:var(--ink)}.hero{width:var(--w);background-image:linear-gradient(#17171509 1px,#0000 1px),linear-gradient(90deg,#17171509 1px,#0000 1px);background-size:32px 32px;grid-template-columns:1.5fr 1fr;align-items:center;gap:64px;margin:56px auto 0;padding:40px 0;display:grid}.hero h1{letter-spacing:.01em;font-size:clamp(38px,5.2vw,60px)}.hero-sub{max-width:34em;color:var(--ink-soft);margin-top:28px}.hero-cta{align-items:center;gap:28px;margin-top:36px;display:flex}.hero-photo{justify-self:end;width:100%;max-width:320px}.photo-slot{aspect-ratio:4/5;border:1.5px dashed var(--ink-soft);font-family:var(--mono);color:var(--ink-soft);background:repeating-linear-gradient(-45deg,#0000,#0000 12px,#17171505 12px 24px);justify-content:center;align-items:center;font-size:13px;display:flex}.hero-portrait{aspect-ratio:4/5;object-fit:cover;border:1.5px solid var(--ink);border-radius:6px;width:100%;display:block;box-shadow:6px 6px #1717151f}.hero-photo figcaption{color:var(--ink-soft);margin-top:10px;font-size:13px}.cred-row{flex-wrap:wrap;gap:8px 10px;margin-top:24px;display:flex}.cred-row span{color:var(--accent);white-space:nowrap;background:#1e3a5f0d;border:1px solid #1e3a5f59;border-radius:999px;padding:4px 12px;font-size:13px;font-weight:500}.stats{width:var(--w);border-top:1.5px solid var(--ink);border-bottom:1px solid var(--line);grid-template-columns:repeat(3,1fr);margin:72px auto 0;display:grid}.stat{flex-direction:column;gap:4px;padding:28px 0;display:flex}.stat+.stat{border-left:1px solid var(--line);padding-left:32px}.stat strong{font-family:var(--serif);font-size:clamp(24px,3vw,34px);font-weight:900}.stat span{color:var(--ink-soft);font-size:14px}.shelf,.posts,.about{width:var(--w);margin:120px auto 0}.shelf h2,.posts h2,.about h2{font-size:clamp(28px,3.6vw,40px)}.shelf-grid{grid-template-columns:repeat(3,1fr);align-items:stretch;gap:24px;margin-top:48px;display:grid}.card{border:1.5px solid var(--ink);background:var(--paper);flex-direction:column;gap:16px;padding:32px 28px;transition:transform .15s,box-shadow .15s;display:flex;overflow:hidden}.card-cover{aspect-ratio:3/2;object-fit:cover;border-bottom:1.5px solid var(--ink);width:calc(100% + 56px);margin:-32px -28px 0;display:block}.card:hover{box-shadow:6px 6px 0 var(--line);transform:translate(-3px,-3px)}.card-flagship{background:var(--ink);color:var(--paper)}.card-flagship:hover{box-shadow:6px 6px 0 var(--marker)}.card-badge{color:var(--ink-soft);font-size:14px;font-weight:600}.card-flagship .card-badge{color:var(--marker)}.card h3{font-size:22px}.card-tagline{color:var(--ink-soft);font-size:14px}.card-flagship .card-tagline{color:#fafaf7b8}.card-includes{color:var(--ink-soft);flex-direction:column;gap:8px;font-size:14px;list-style:none;display:flex}.card-flagship .card-includes{color:#fafaf7b8}.card-includes li{padding-left:18px;position:relative}.card-includes li:before{content:"＋";font-family:var(--mono);position:absolute;left:0}.card-cta{margin-top:auto;padding-top:8px}.card-flagship .btn-paper{color:var(--paper)}.shelf-note{color:var(--ink-soft);margin-top:28px;font-size:14px}.post-list{border-top:1.5px solid var(--ink);margin-top:40px}.post-row{border-bottom:1px solid var(--line);grid-template-columns:72px 1fr 40px;align-items:baseline;gap:24px;padding:28px 0;transition:background .15s;display:grid}.post-row:hover{background:#ffe94b24}.post-row time{font-family:var(--mono);color:var(--ink-soft);font-size:13px}.post-row h3{font-size:19px;display:inline}.post-row:hover h3{background:linear-gradient(transparent 58%, var(--marker) 58%, var(--marker) 92%, transparent 92%)}.post-row p{color:var(--ink-soft);max-width:44em;margin-top:6px;font-size:14px}.post-arrow{font-family:var(--mono);color:var(--ink-soft);justify-self:end}.about{margin-bottom:140px}.about-grid{grid-template-columns:1fr 1fr;align-items:start;gap:64px;display:grid}.about-copy{color:var(--ink-soft);flex-direction:column;gap:18px;padding-top:8px;display:flex}.wechat-slot{color:var(--ink)}.site-footer{border-top:1.5px solid var(--ink)}.footer-inner{width:var(--w);justify-content:space-between;align-items:baseline;margin:0 auto;padding:32px 0;display:flex}.footer-meta{font-family:var(--mono);color:var(--ink-soft);font-size:12px}.reveal{animation:.7s cubic-bezier(.2,.7,.2,1) both rise}.d1{animation-delay:80ms}.d2{animation-delay:.16s}.d3{animation-delay:.24s}.d4{animation-delay:.32s}@keyframes rise{0%{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}@media (prefers-reduced-motion:reduce){.reveal{animation:none}}@media (max-width:860px){.hero{grid-template-columns:1fr;gap:40px;margin-top:32px}.hero-photo{justify-self:start;max-width:240px}.stats{grid-template-columns:1fr}.stat+.stat{border-left:none;border-top:1px solid var(--line);padding-left:0}.shelf-grid{grid-template-columns:1fr}.about-grid{grid-template-columns:1fr;gap:32px}.post-row{grid-template-columns:56px 1fr}.post-arrow{display:none}.site-nav{gap:16px}}@media (max-width:640px){.site-header{flex-direction:column;align-items:flex-start;gap:8px;padding:20px 0}.site-nav{flex-wrap:wrap;gap:6px 18px;font-size:13px}.hero{padding:24px 0}.hero-cta{flex-direction:column;align-items:flex-start;gap:18px}.btn-ink,.btn-paper{text-align:center;width:100%}.stats{margin-top:48px}.shelf,.posts,.about{margin-top:80px}}.about-creds{flex-direction:column;gap:8px;font-size:14px;list-style:none;display:flex}.about-creds li:before{content:"·";color:var(--accent);margin-right:10px;font-weight:900}.shelf-sub{max-width:640px;color:var(--ink-soft);margin-top:16px;font-size:15px;line-height:1.8}.proof-grid{grid-template-columns:5fr 7fr;gap:24px;margin-top:48px;display:grid}.proof-card{border:1.5px solid var(--ink);background:#fff;flex-direction:column;transition:transform .15s,box-shadow .15s;display:flex}.proof-card:hover{box-shadow:6px 6px 0 var(--line);transform:translate(-3px,-3px)}.proof-media{aspect-ratio:16/10;border-bottom:1.5px solid var(--ink);background:var(--line);display:block;overflow:hidden}.proof-tall .proof-media{aspect-ratio:4/5}.proof-media img{object-fit:cover;object-position:top;width:100%;height:100%;display:block}.proof-text{flex-direction:column;flex:1;gap:8px;padding:22px 24px 24px;display:flex}.proof-tag{font-family:var(--mono);color:var(--accent);letter-spacing:.04em;font-size:12px}.proof-text h3{font-size:20px}.proof-caption{color:var(--ink-soft);font-size:15px;line-height:1.75}.proof-note{color:var(--ink-soft);margin-top:auto;padding-top:10px;font-size:13px}.proof-note a{color:var(--accent);text-underline-offset:3px;-webkit-text-decoration:underline #1e3a5f59;text-decoration:underline #1e3a5f59}.timeline{border-top:1.5px solid var(--ink);margin-top:40px;list-style:none}.timeline li{border-bottom:1px solid var(--line);grid-template-columns:28px 88px 1fr auto;align-items:baseline;gap:12px;padding:14px 4px;display:grid}.tl-mark{color:var(--accent);font-weight:700}.tl-week{font-family:var(--mono);color:var(--ink-soft);font-size:13px}.tl-title{font-size:16px}.tl-planned .tl-title{color:var(--ink-soft)}.tl-tag{white-space:nowrap;border-radius:999px;padding:2px 10px;font-size:12px}.tl-done .tl-tag{background:var(--accent);color:#fff}.tl-planned .tl-tag{border:1px solid var(--line);color:var(--ink-soft)}@media (max-width:860px){.proof-grid{grid-template-columns:1fr}.proof-tall .proof-media{aspect-ratio:4/5}.timeline li{grid-template-columns:20px 1fr auto}.tl-week{display:none}}
.course{width:min(780px,100vw - 48px);margin:56px auto 140px}.course-head h1{font-size:clamp(32px,4.4vw,48px)}.course-cover{aspect-ratio:21/9;object-fit:cover;border:1.5px solid var(--ink);width:100%;box-shadow:8px 8px 0 var(--line);margin-bottom:40px;display:block}.course-tagline{color:var(--ink-soft);margin-top:18px;font-size:17px}.course-meta{font-family:var(--mono);color:var(--ink-soft);align-items:baseline;gap:20px;margin-top:20px;font-size:13px;display:flex}.course-price{font-family:var(--serif);color:var(--ink);font-size:26px;font-weight:900}.course-cta{flex-wrap:wrap;align-items:center;gap:20px;margin-top:32px;display:flex}.cta-hint{color:var(--ink-soft);font-size:13px}.course-block{margin-top:80px}.course-block h2{margin-bottom:28px;font-size:clamp(22px,3vw,30px)}.includes-list{flex-direction:column;gap:14px;list-style:none;display:flex}.includes-list li{border:1px solid var(--line);border-left:3px solid var(--marker);background:#fff;padding:16px 20px}.fit-grid{grid-template-columns:1fr 1fr;gap:24px;display:grid}.fit-col{border:1.5px solid var(--ink);padding:24px}.fit-col h3{margin-bottom:14px;font-size:16px}.fit-col ul{color:var(--ink-soft);flex-direction:column;gap:10px;font-size:14px;list-style:none;display:flex}.fit-col li:before{content:"✓ ";font-family:var(--mono)}.fit-not{border-style:dashed;border-color:var(--ink-soft)}.fit-not li:before{content:"✕ "}.toc-section{margin-bottom:36px}.toc-section h3{font-family:var(--serif);color:var(--ink);margin-bottom:12px;font-size:18px;font-weight:900}.toc-list{counter-reset:lesson;border-top:1px solid var(--line);list-style:none}.toc-list li{counter-increment:lesson;border-bottom:1px solid var(--line)}.toc-list a,.toc-list .toc-locked{justify-content:space-between;align-items:baseline;gap:16px;padding:14px 4px;display:flex}.toc-list a:hover .toc-title{background:linear-gradient(transparent 58%, var(--marker) 58%, var(--marker) 92%, transparent 92%)}.toc-title:before{content:counter(lesson, decimal-leading-zero) "  ";font-family:var(--mono);color:var(--ink-soft);font-size:12px}.toc-locked{color:var(--ink-soft)}.toc-meta{font-family:var(--mono);color:var(--ink-soft);white-space:nowrap;font-size:12px}.toc-meta em{background:var(--accent);color:#fff;border-radius:3px;margin-right:8px;padding:2px 8px;font-size:12px;font-style:normal}.how-to .steps{counter-reset:step;flex-direction:column;gap:16px;margin-bottom:20px;list-style:none;display:flex}.how-to .steps li{counter-increment:step;align-items:baseline;gap:16px;display:flex}.how-to .steps li:before{content:counter(step);font-family:var(--serif);border-bottom:3px solid var(--marker);font-size:22px;font-weight:900;line-height:1.2}.how-to a{text-decoration:underline;-webkit-text-decoration-color:var(--marker);text-decoration-color:var(--marker);text-decoration-thickness:3px}.lesson{grid-template-columns:260px 1fr;align-items:start;gap:48px;width:min(1180px,100vw - 48px);margin:40px auto 120px;display:grid}.lesson-side{max-height:calc(100vh - 48px);padding-right:8px;position:sticky;top:24px;overflow-y:auto}.lesson-back{font-family:var(--mono);color:var(--ink-soft);margin-bottom:16px;font-size:12px;display:block}.lesson-back:hover{color:var(--ink)}.lesson-toc{border-top:1px solid var(--line);font-size:13px;list-style:none}.lesson-toc li{border-bottom:1px solid var(--line)}.lesson-toc a,.lesson-toc .toc-locked{color:var(--ink-soft);padding:10px 8px;display:block}.lesson-toc a:hover{color:var(--ink);background:#ffe94b24}.lesson-toc .current a{color:var(--ink);border-left:3px solid var(--marker);background:#ffe94b1a;font-weight:600}.lesson-main h1{margin-bottom:28px;font-size:clamp(24px,3.2vw,34px)}.lesson-video{aspect-ratio:16/9;background:var(--ink);width:100%;display:block}.video-pending{aspect-ratio:16/9;border:1.5px dashed var(--ink-soft);font-family:var(--mono);color:var(--ink-soft);justify-content:center;align-items:center;font-size:13px;display:flex}.lesson-extras{margin-top:48px}.lesson-extras h2{margin-bottom:14px;font-size:18px}.lesson-extras ul{flex-direction:column;gap:10px;font-size:14px;list-style:none;display:flex}.lesson-extras a{text-decoration:underline;-webkit-text-decoration-color:var(--marker);text-decoration-color:var(--marker);text-decoration-thickness:3px}.lesson-nav{border-top:1.5px solid var(--ink);justify-content:space-between;gap:24px;margin-top:64px;padding-top:20px;font-size:14px;display:flex}.lesson-nav a:hover{background:linear-gradient(transparent 58%, var(--marker) 58%, var(--marker) 92%, transparent 92%)}.prose{max-width:44em;margin-top:40px}.prose h1,.prose h2,.prose h3{margin:1.8em 0 .7em}.prose h2{font-size:22px}.prose h3{font-size:18px}.prose p,.prose li{color:#333330;margin-bottom:.9em}.prose ul,.prose ol{padding-left:1.4em}.prose code{font-family:var(--mono);background:#f0efe8;padding:2px 6px;font-size:.88em}.prose pre{background:var(--ink);color:var(--paper);margin-bottom:1.2em;padding:20px;overflow-x:auto}.prose pre code{background:0 0;padding:0}.prose blockquote{border-left:3px solid var(--marker);color:var(--ink-soft);margin-bottom:.9em;padding-left:1em}.prose table{border-collapse:collapse;max-width:100%;margin-bottom:1.2em;font-size:14px;display:block;overflow-x:auto}.prose th,.prose td{border:1px solid var(--line);text-align:left;padding:8px 14px}.prose img{max-width:100%}.auth-page{width:min(420px,100vw - 48px);margin:80px auto 160px}.auth-page h1{margin-bottom:36px;font-size:clamp(26px,3.4vw,34px)}.auth-form{flex-direction:column;gap:20px;display:flex}.auth-form label{color:var(--ink-soft);flex-direction:column;gap:8px;font-size:14px;display:flex}.auth-form input{border:1.5px solid var(--ink);color:var(--ink);background:#fff;padding:12px 14px;font-family:inherit;font-size:16px}.auth-form input:focus{box-shadow:4px 4px 0 var(--marker);outline:none}.code-input{font-family:var(--mono);letter-spacing:.12em;text-transform:uppercase}.form-error{color:#b3261e;font-size:14px}.auth-form .btn-ink{cursor:pointer;font-family:inherit}.auth-form .btn-ink:disabled{opacity:.5;cursor:wait}.auth-alt{color:var(--ink-soft);margin-top:28px;font-size:14px}.auth-alt a{text-decoration:underline;-webkit-text-decoration-color:var(--marker);text-decoration-color:var(--marker);text-decoration-thickness:3px}.redeem-login-first p{color:var(--ink-soft);margin-bottom:24px}.account-page{width:min(640px,100vw - 48px);margin:72px auto 160px}.account-page h1{word-break:break-all;margin-bottom:40px;font-size:clamp(22px,3vw,30px)}.account-page h2{margin-bottom:20px;font-size:18px}.unlock-banner{border:1.5px solid var(--ink);border-left:6px solid var(--marker);background:#fff;margin-bottom:36px;padding:14px 18px;font-weight:600}.account-empty p{color:var(--ink-soft);margin-bottom:24px}.account-courses{border-top:1.5px solid var(--ink);list-style:none}.account-courses li{border-bottom:1px solid var(--line)}.account-courses a{justify-content:space-between;align-items:baseline;padding:20px 4px;display:flex}.account-courses a:hover strong{background:linear-gradient(transparent 58%, var(--marker) 58%, var(--marker) 92%, transparent 92%)}.account-courses span{font-family:var(--mono);color:var(--ink-soft);font-size:13px}.account-foot{margin-top:56px}.logout-btn{border:none;border-bottom:1px solid var(--line);cursor:pointer;background:0 0;font-family:inherit;font-size:14px}.posts-page{min-height:50vh;margin-bottom:160px}.post-tag{font-family:var(--mono);border:1px solid var(--ink-soft);color:var(--ink-soft);margin-top:10px;padding:1px 8px;font-size:11px;display:inline-block}.post-page{width:min(720px,100vw - 48px);margin:64px auto 160px}.post-page h1{font-size:clamp(28px,4vw,40px)}.post-locked-excerpt{color:var(--ink-soft);max-width:40em;margin-top:36px;font-size:17px}.post-locked{border:1.5px solid var(--ink);box-shadow:8px 8px 0 var(--marker);background:#fff;margin-top:48px;padding:36px}.post-locked h2{margin-bottom:12px;font-size:20px}.post-locked p{color:var(--ink-soft);margin-bottom:24px}.res-page{width:var(--w);min-height:50vh;margin:56px auto 160px}.res-page h2{font-size:clamp(28px,3.6vw,40px)}.res-intro{color:var(--ink-soft);max-width:36em;margin-top:20px}.res-filter{flex-wrap:wrap;gap:10px;margin-top:36px;display:flex}.res-filter a{font-family:var(--mono);border:1px solid var(--ink-soft);color:var(--ink-soft);padding:5px 14px;font-size:13px}.res-filter a.active,.res-filter a:hover{background:var(--ink);border-color:var(--ink);color:var(--paper)}.res-grid{grid-template-columns:repeat(3,1fr);gap:20px;margin-top:40px;display:grid}.res-grid-home{grid-template-columns:repeat(4,1fr);margin-top:48px}.res-card{border:1.5px solid var(--ink);background:#fff;flex-direction:column;gap:10px;padding:24px 22px;transition:transform .15s,box-shadow .15s;display:flex}a.res-card:hover{box-shadow:6px 6px 0 var(--marker);transform:translate(-3px,-3px)}.res-card-pending{border-style:dashed;border-color:var(--ink-soft);background:0 0}.res-emoji{font-size:34px;line-height:1}.res-card h3{font-size:17px}.res-card>p{color:var(--ink-soft);font-size:13px}.res-note{color:var(--ink);background:linear-gradient(#0000 62%,#ffe94b8c 62% 94%,#0000 94%);align-self:flex-start;font-size:13px}.res-tags{flex-wrap:wrap;gap:6px;margin-top:auto;padding-top:8px;display:flex}.res-tags em{font-style:normal;font-family:var(--mono);border:1px solid var(--line);color:var(--ink-soft);padding:1px 8px;font-size:11px}.res-tags .res-free{background:var(--marker);border-color:var(--marker);color:var(--ink);font-weight:500}.res-cta{margin-top:4px;font-size:14px;font-weight:600}.res-pending{font-family:var(--mono);color:var(--ink-soft);font-size:12px;font-weight:400}@media (max-width:860px){.lesson{grid-template-columns:1fr;gap:24px}.lesson-main,.lesson-side{min-width:0;max-width:100%}.lesson-side{order:2;max-height:none;position:static}.lesson-main{order:1}.fit-grid{grid-template-columns:1fr}.res-grid,.res-grid-home{grid-template-columns:1fr 1fr}}@media (max-width:640px){.course{margin:28px auto 100px}.course-cover{aspect-ratio:3/2;box-shadow:5px 5px 0 var(--line);margin-bottom:28px}.course-block{margin-top:56px}.course-cta{flex-direction:column;align-items:stretch}.lesson{margin:20px auto 80px}.auth-page,.account-page{margin:48px auto 100px}.post-locked{box-shadow:5px 5px 0 var(--marker);padding:24px 20px}.res-page{margin:32px auto 100px}}@media (max-width:560px){.res-grid,.res-grid-home{grid-template-columns:1fr}}.card-facts{color:var(--ink);margin-bottom:10px;font-size:15px;font-weight:600}.card-flagship .card-facts{color:var(--paper)}.pass-banner{border:1px solid var(--line);border-left:4px solid var(--accent);background:#fff;margin-bottom:36px;padding:14px 18px}.pkg-page{max-width:780px;margin:0 auto;padding:48px 0 80px}.pkg-head{margin-bottom:40px}.pkg-head h1{margin:10px 0 12px;font-size:clamp(24px,4vw,36px)}.pkg-head .res-note{margin-top:10px}.pkg-cta{flex-wrap:wrap;align-items:center;gap:16px;margin-top:24px;display:flex}.pkg-tree{font-family:var(--mono);border:1.5px solid var(--ink);white-space:pre;background:#fff;padding:18px 20px;font-size:12.5px;line-height:1.7;overflow-x:auto}.toc-list li.toc-package{counter-increment:none;background:#ffe94b24}.toc-package .toc-title:before{content:""}.toc-package .toc-title small{color:var(--ink-soft);font-size:.85em}.course{grid-template-columns:minmax(0,1fr) 340px;align-items:start;gap:56px;width:min(1120px,100vw - 48px);display:grid}.course-main{min-width:0;max-width:720px}.buy-side{position:sticky;top:24px}.buy-card{border:1.5px solid var(--ink);background:#fff;flex-direction:column;gap:16px;padding:26px 24px;display:flex;box-shadow:8px 8px #1e3a5f1a}.buy-price-row{border-bottom:1px solid var(--line);justify-content:space-between;align-items:baseline;gap:12px;padding:10px 0;display:flex}.buy-price-row:last-of-type{border-bottom:none}.buy-price-row .label{color:var(--ink-soft);font-size:14px}.buy-price-row .price{font-family:var(--serif);color:var(--accent);white-space:nowrap;font-size:24px;font-weight:900}.buy-price-row .price small{color:var(--ink-soft);font-size:13px;font-weight:400}.buy-free{font-family:var(--serif);color:var(--accent);font-size:26px;font-weight:900}.buy-includes{color:var(--ink-soft);flex-direction:column;gap:8px;font-size:14px;list-style:none;display:flex}.buy-includes li:before{content:"✓ ";color:var(--accent);font-weight:700}.buy-card .btn-accent,.buy-card .btn-ink{text-align:center;width:100%}.buy-trust{color:var(--ink-soft);text-align:center;font-size:13px}.buy-preview{text-align:center;color:var(--accent);text-underline-offset:3px;font-size:14px;text-decoration:underline}.sticky-buy{display:none}.toc-week{border-top:1.5px solid var(--ink);margin-bottom:4px}.toc-week summary{cursor:pointer;justify-content:space-between;align-items:baseline;gap:16px;padding:16px 4px;list-style:none;display:flex}.toc-week summary::-webkit-details-marker{display:none}.toc-week summary h3{font-family:var(--serif);color:var(--ink);margin:0;font-size:18px;font-weight:900}.toc-week summary .week-meta{color:var(--ink-soft);white-space:nowrap;font-size:13px}.toc-week summary:after{content:"＋";font-family:var(--mono);color:var(--ink-soft)}.toc-week[open] summary:after{content:"－"}.toc-week .toc-list{border-top:none;margin-bottom:16px}@media (max-width:980px){.course{grid-template-columns:1fr;gap:32px}.course-main{max-width:none}.buy-side{order:-1;position:static}.sticky-buy{z-index:50;border-top:1.5px solid var(--ink);padding:10px 16px calc(10px + env(safe-area-inset-bottom));background:#fff;justify-content:space-between;align-items:center;gap:12px;display:flex;position:fixed;bottom:0;left:0;right:0}.sticky-buy .price{font-family:var(--serif);color:var(--accent);white-space:nowrap;font-size:20px;font-weight:900}.sticky-buy .price small{color:var(--ink-soft);font-size:12px;font-weight:400}.sticky-buy .btn-accent{flex-shrink:0;padding:10px 20px;font-size:14px}.course{padding-bottom:72px}}.demo-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px;margin-top:40px;display:grid}.demo-card{border:1.5px solid var(--ink);background:#fff;flex-direction:column;gap:10px;padding:24px 26px;transition:transform .15s,box-shadow .15s;display:flex}.demo-card:hover{box-shadow:6px 6px 0 var(--line);transform:translate(-3px,-3px)}.demo-card h3{font-size:20px}.demo-what{color:var(--ink-soft);flex:1;font-size:14.5px}.demo-run{border:1.5px solid var(--ink);background:#fff;gap:16px;margin-top:32px;padding:28px;display:grid}.demo-big{justify-self:start;padding:16px 34px;font-size:17px}.demo-note{color:var(--ink-soft);font-size:13.5px}.demo-steps{gap:8px;font-size:15px;list-style:none;display:grid}.demo-steps li{color:var(--ink-soft)}.demo-steps li.now{color:var(--accent);font-weight:600}.demo-steps li.done{color:var(--ink)}.demo-result{color:var(--accent);font-weight:600}.demo-frame{border:1.5px solid var(--line);background:var(--paper);width:100%;height:640px}.demo-actions{flex-wrap:wrap;align-items:center;gap:18px;display:flex}.demo-local{gap:12px;margin-top:32px;display:grid}.demo-local pre{background:var(--ink);color:var(--paper);padding:18px 22px;font-size:13.5px;line-height:1.9;overflow-x:auto}
