/* 基础 */
:root{--bg:#F5F7F8;--paper:#fff;--soft:#EDEFF1;--soft-blue:#E8EEF2;--warm:#F3E9DF;--navy:#183247;--navy-dark:#102536;--bluegray:#496779;--teal:#3F746F;--copper:#B9653B;--title:#1E2A32;--text:#38454D;--muted:#65727A;--hint:#758189;--border:#D6DDE1;--footer:#132A3A;--footer-text:#F3F6F7;--max:1200px;--article:760px}
*,*::before,*::after{box-sizing:border-box}
html{font-size:16px;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.82;text-rendering:optimizeLegibility}
a{color:var(--bluegray);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:var(--copper);text-decoration-thickness:2px}
a:focus-visible,button:focus-visible{outline:3px solid rgba(185,101,59,.45);outline-offset:3px}
button{font:inherit;color:inherit}
img{display:block;max-width:100%;height:auto}
figure{margin:0;min-width:0}
p,li{overflow-wrap:break-word}
.skip-link{position:absolute;left:16px;top:-80px;z-index:100;background:#fff;color:var(--navy);padding:10px 14px;border:1px solid var(--border);border-radius:8px}.skip-link:focus{top:10px}

/* 布局 */
.site-header{background:rgba(255,255,255,.96);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:30}
.header-inner{max-width:var(--max);min-height:70px;margin:0 auto;padding:0 34px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:11px;color:var(--title);text-decoration:none;min-width:0}.brand-logo{display:flex;align-items:center}.logo-img{height:32px;width:auto;max-width:170px}.brand-copy{display:flex;flex-direction:column;line-height:1.15;white-space:nowrap}.brand-copy strong{font-size:17px}.brand-copy small{margin-top:4px;font-size:10px;letter-spacing:.08em;color:var(--muted)}
.desktop-nav{display:flex;align-items:center;gap:18px;min-width:0}.desktop-nav a,.menu-toggle,.mobile-menu-toggle{font-size:15px;text-decoration:none;color:var(--text);white-space:nowrap}.desktop-nav a{padding:22px 0;border-bottom:2px solid transparent}.desktop-nav a.is-current{color:var(--navy);border-color:var(--copper)}.menu-toggle,.mobile-menu-toggle,.menu-close{min-width:44px;min-height:44px;padding:8px 12px;border:1px solid var(--border);background:#fff;border-radius:8px;cursor:pointer}.route-link{font-weight:600}.mobile-menu-toggle{display:none}
.category-panel{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.category-panel[hidden]{display:none!important}.category-inner{max-width:var(--max);margin:0 auto;padding:24px 34px 20px}.category-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}.category-head strong{font-size:19px;color:var(--title)}.category-groups{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:30px}.category-groups section{min-width:0}.category-groups h2{font-size:15px;margin:0 0 8px;color:var(--copper)}.category-groups a{display:block;padding:7px 0;color:var(--title);text-decoration:none;border-bottom:1px solid #edf0f2}.category-groups small{color:var(--muted);font-size:12px;margin-left:4px}.service-strip{display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:18px;padding-top:14px;border-top:1px solid var(--border)}.service-strip a{font-size:14px}
main{display:block}.page-shell{max-width:var(--max);margin:0 auto;padding:0 34px}.article-shell{max-width:1040px;margin:0 auto;padding:0 34px}.reading-column{max-width:var(--article);margin:0 auto}.narrow-column{max-width:680px;margin:0 auto}.section{padding:60px 0}.section-sm{padding:42px 0}.section-alt{background:var(--soft)}.section-blue{background:var(--soft-blue)}.section-warm{background:var(--warm)}
.breadcrumb{font-size:14px;color:var(--muted);margin-bottom:12px}.breadcrumb a{color:var(--muted)}.page-intro{padding:42px 0 28px;max-width:920px}.page-intro h1{font-size:36px;line-height:1.25;margin:0 0 14px;color:var(--title);letter-spacing:-.01em}.page-intro p{max-width:780px;margin:0;font-size:17px;color:var(--muted)}.eyebrow{display:inline-block;margin-bottom:10px;color:var(--copper);font-size:14px;font-weight:700;letter-spacing:.04em}
h1,h2,h3{color:var(--title);font-weight:700}h2{font-size:26px;line-height:1.35;margin:0 0 18px}h3{font-size:20px;line-height:1.45;margin:0 0 10px}p{margin:0 0 1.15em}.lead{font-size:18px;line-height:1.8;color:#2f3d45}.muted{color:var(--muted)}.small-note{font-size:14px;color:var(--hint)}
.text-link{font-weight:600}.inline-links{display:flex;flex-wrap:wrap;gap:10px 18px;margin-top:20px}.inline-links a{font-weight:600}.button-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 16px;border-radius:8px;text-decoration:none;font-weight:600;border:1px solid var(--navy)}.btn-primary{background:var(--navy);color:#fff}.btn-primary:hover{background:var(--navy-dark);color:#fff}.btn-secondary{background:#fff;color:var(--navy)}
.prose h2{margin-top:42px}.prose h3{margin-top:30px}.prose ul,.prose ol{padding-left:1.3em}.prose blockquote{margin:28px 0;padding:18px 20px;border-left:3px solid var(--copper);background:var(--warm);color:#39464e}
.content-image{margin:24px 0;max-width:460px}.content-image img{object-fit:contain;border:1px solid var(--border);border-radius:10px}.content-image.center{margin-left:auto;margin-right:auto}.content-image.wide{max-width:620px}.content-image.narrow{max-width:330px}.content-image.device{max-width:250px}.content-image.dark img{border-color:rgba(255,255,255,.25)}
.two-col{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:38px;align-items:start}.asym{grid-template-columns:minmax(0,.72fr) minmax(0,1.28fr)}.visual-grid{display:grid;grid-template-columns:minmax(0,.7fr) minmax(0,1.3fr);gap:34px;align-items:center}.sidebar-layout{display:grid;grid-template-columns:minmax(0,1fr) 210px;gap:42px;align-items:start}.sidebar-note{border-left:2px solid var(--border);padding-left:18px;color:var(--muted);font-size:14px}
.rule-list{list-style:none;padding:0;margin:0}.rule-list li{padding:14px 0;border-top:1px solid var(--border)}.rule-list li:first-child{border-top:0}.number-line{display:grid;grid-template-columns:52px minmax(0,1fr);gap:14px;padding:20px 0;border-top:1px solid var(--border)}.number-line .num{color:var(--copper);font-weight:700;letter-spacing:.06em}.number-line h3{margin-bottom:6px}.number-line p{margin-bottom:0}
.timeline{border-left:1px solid var(--border);margin-left:18px;padding-left:28px}.timeline article{position:relative;padding:0 0 30px}.timeline article::before{content:"";position:absolute;left:-34px;top:8px;width:11px;height:11px;border-radius:50%;background:var(--copper);border:3px solid var(--bg)}.timeline h3{margin-bottom:8px}
.tagline{display:inline-block;padding:4px 9px;border:1px solid var(--border);border-radius:999px;font-size:13px;color:var(--teal);background:#fff}
.deep-panel{background:var(--navy);color:#eef4f5;border-radius:14px;padding:28px}.deep-panel h2,.deep-panel h3{color:#fff}.deep-panel p{color:#e7edf0}.deep-panel a{color:#f4d3c2}.deep-panel .small-note{color:#d0dce0}
.index-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 28px}.index-list a{display:flex;justify-content:space-between;gap:14px;padding:14px 0;border-bottom:1px solid var(--border);text-decoration:none;color:var(--title)}.index-list small{color:var(--muted)}
.topic-terms{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px 24px}.topic-terms div{padding:14px 0;border-top:2px solid var(--border)}.topic-terms strong{display:block;color:var(--title);margin-bottom:4px}.topic-terms span{font-size:14px;color:var(--muted)}
.qa{padding:0 0 24px;margin:0 0 24px;border-bottom:1px solid var(--border)}.qa h2{font-size:20px;margin-bottom:8px}.qa p{margin:0}
.notice-list{display:grid;gap:18px}.notice-list section{padding:0 0 18px;border-bottom:1px solid var(--border)}.notice-list h2{font-size:21px;margin-bottom:7px}
.site-footer{background:var(--footer);color:var(--footer-text);margin-top:40px}.footer-grid{max-width:var(--max);margin:0 auto;padding:48px 34px 36px;display:grid;grid-template-columns:1.3fr repeat(3,minmax(0,1fr));gap:38px}.footer-grid section{min-width:0}.footer-grid h2{font-size:15px;color:#c6d4db;margin:0 0 12px}.footer-grid strong{display:block;font-size:18px}.footer-en{display:block;margin:2px 0 12px;color:#aebfc7;font-size:11px;letter-spacing:.08em}.footer-grid p{font-size:14px;color:#cfdae0}.footer-grid a{display:block;color:#eef4f6;text-decoration:none;padding:3px 0;font-size:14px}.footer-grid a:hover{text-decoration:underline}.footer-bottom{max-width:var(--max);margin:0 auto;padding:16px 34px 26px;border-top:1px solid rgba(255,255,255,.12);font-size:13px;color:#b9c8cf}.mobile-bottom-nav{display:none}

/* 首页 */
.home-opening{display:grid;grid-template-columns:minmax(0,1fr) minmax(280px,390px);gap:44px;align-items:center;padding:54px 0 32px}.home-opening h1{font-size:36px;line-height:1.25;margin:0 0 18px}.home-opening .opening-copy{min-width:0}.home-opening .opening-image{min-width:0}.home-opening .opening-image img{max-height:280px;object-fit:contain;margin-left:auto;border:1px solid var(--border);border-radius:12px}.entry-strip{display:flex;flex-wrap:wrap;gap:10px 20px;margin:18px 0 0;padding:16px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.entry-strip a{font-weight:600}
.reading-line{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:36px;align-items:start}.reading-steps{min-width:0}.reading-steps .number-line:first-child{border-top:0}.genre-feature{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(260px,.8fr);gap:40px;align-items:start}.relation-track{padding:10px 0}.relation-track span{display:block;padding:11px 0;border-bottom:1px solid var(--border);color:var(--title)}.relation-track span::before{content:"";display:inline-block;width:9px;height:9px;margin-right:10px;border-radius:50%;background:var(--teal)}.mini-analysis{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:24px}.mini-analysis div{padding-top:14px;border-top:2px solid var(--copper)}.sound-block{max-width:850px}.sound-block.alt{margin-left:auto;max-width:700px}.location-layout{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:38px;align-items:start}.creative-steps{counter-reset:path}.creative-step{position:relative;padding:18px 0 18px 58px;border-bottom:1px solid var(--border)}.creative-step::before{counter-increment:path;content:counter(path,decimal-leading-zero);position:absolute;left:0;top:18px;color:var(--copper);font-weight:700}.case-feature{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr);gap:32px}.case-feature article{padding-top:16px;border-top:2px solid var(--border)}.case-feature .lead-case{grid-row:span 2;padding-right:24px}.continue-grid{display:grid;grid-template-columns:minmax(0,1fr) 230px;gap:36px;align-items:center}

/* 栏目页 */
.stage-list{counter-reset:stage}.stage{display:grid;grid-template-columns:72px minmax(0,1fr);gap:20px;padding:24px 0;border-top:1px solid var(--border)}.stage::before{counter-increment:stage;content:counter(stage,decimal-leading-zero);font-weight:700;color:var(--copper);font-size:18px}.scene-dialogue{padding:24px 0;border-bottom:1px solid var(--border)}.scene-dialogue dl{margin:12px 0 0;display:grid;grid-template-columns:110px minmax(0,1fr);gap:8px 18px}.scene-dialogue dt{font-weight:700;color:var(--teal)}.scene-dialogue dd{margin:0}.case-label{font-size:13px;font-weight:700;color:var(--copper);letter-spacing:.04em}.case-time{border-left:2px solid var(--teal);padding-left:20px}.case-time p{position:relative}.case-time p::before{content:"";position:absolute;left:-26px;top:.7em;width:10px;height:10px;border-radius:50%;background:var(--teal)}.relation-shifts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.relation-shifts div{padding:16px;background:var(--soft-blue);border-radius:10px}.collection-index{border-top:1px solid var(--border)}.collection-index a{display:grid;grid-template-columns:140px minmax(0,1fr);gap:24px;padding:18px 0;border-bottom:1px solid var(--border);text-decoration:none}.collection-index strong{color:var(--title)}.collection-index span{color:var(--muted)}

/* 响应式 */
@media (max-width:1100px){.desktop-nav{gap:13px}.desktop-nav a{font-size:14px}.header-inner{padding-left:24px;padding-right:24px}.page-shell,.article-shell{padding-left:24px;padding-right:24px}.category-inner{padding-left:24px;padding-right:24px}.footer-grid,.footer-bottom{padding-left:24px;padding-right:24px}}
@media (max-width:900px){.brand-copy small{display:none}.desktop-nav a:nth-child(5),.desktop-nav a:nth-child(6){display:none}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.home-opening{grid-template-columns:minmax(0,1fr) minmax(240px,340px)}.reading-line{grid-template-columns:minmax(0,1fr) 260px}.visual-grid,.genre-feature,.location-layout,.case-feature,.continue-grid{gap:28px}.sidebar-layout{grid-template-columns:minmax(0,1fr) 180px}}
@media (max-width:767px){
  body{padding-bottom:calc(58px + env(safe-area-inset-bottom))}
  .site-header{position:relative}.header-inner{min-height:60px;padding:0 16px}.brand-copy strong{font-size:16px}.logo-img{height:27px;max-width:145px}.desktop-nav{display:none}.mobile-menu-toggle{display:inline-flex;align-items:center;justify-content:center}.category-inner{padding:18px 16px}.category-groups{grid-template-columns:minmax(0,1fr);gap:18px}.category-groups section{display:grid;grid-template-columns:minmax(0,1fr);gap:0}.category-groups small{display:inline}.service-strip{gap:8px 14px}.page-shell,.article-shell{padding-left:16px;padding-right:16px}.section{padding:40px 0}.section-sm{padding:34px 0}.page-intro{padding:32px 0 20px}.page-intro h1{font-size:28px;line-height:1.35}.page-intro p{font-size:16px}h2{font-size:22px;line-height:1.4}h3{font-size:18px;line-height:1.5}.lead{font-size:17px}.two-col,.asym,.visual-grid,.sidebar-layout,.genre-feature,.reading-line,.location-layout,.case-feature,.continue-grid{display:grid;grid-template-columns:minmax(0,1fr);grid-template-areas:none;gap:24px}.two-col>*,.asym>*,.visual-grid>*,.sidebar-layout>*,.genre-feature>*,.reading-line>*,.location-layout>*,.case-feature>*,.continue-grid>*{grid-column:auto!important;grid-row:auto!important;grid-area:auto!important;min-width:0;width:auto}.sidebar-note{border-left:0;border-top:1px solid var(--border);padding:16px 0 0}.home-opening{display:grid;grid-template-columns:minmax(0,1fr);gap:24px;padding:36px 0 24px}.home-opening h1{font-size:28px;line-height:1.35}.home-opening .opening-image img{margin:0 auto;max-height:210px}.topic-terms,.mini-analysis,.relation-shifts{grid-template-columns:minmax(0,1fr)}.index-list{grid-template-columns:minmax(0,1fr)}.number-line{grid-template-columns:42px minmax(0,1fr);gap:10px}.stage{display:block;padding:20px 0}.stage::before{display:inline-block;margin-bottom:8px;padding:2px 8px;border:1px solid var(--border);border-radius:999px}.timeline{margin-left:8px;padding-left:22px}.timeline article::before{left:-28px}.scene-dialogue dl{grid-template-columns:minmax(0,1fr);gap:3px}.scene-dialogue dd{margin-bottom:9px}.collection-index a{grid-template-columns:minmax(0,1fr);gap:5px}.case-feature .lead-case{grid-row:auto;padding-right:0}.content-image,.content-image.wide,.content-image.narrow{max-width:100%}.content-image img{max-height:210px;margin:auto}.content-image.device{max-width:190px}.content-image.device img{max-height:300px}.deep-panel{padding:20px 18px}.footer-grid{grid-template-columns:minmax(0,1fr);gap:24px;padding:38px 16px 28px}.footer-bottom{padding:14px 16px 22px}.mobile-bottom-nav{position:fixed;z-index:40;left:0;right:0;bottom:0;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));min-height:58px;padding-bottom:env(safe-area-inset-bottom);background:#fff;border-top:1px solid var(--border)}.mobile-bottom-nav a{display:flex;align-items:center;justify-content:center;min-width:0;min-height:58px;font-size:12px;text-decoration:none;color:var(--muted)}.mobile-bottom-nav a.is-current{color:var(--navy);font-weight:700;border-top:2px solid var(--copper)}
}
@media (max-width:360px){.header-inner,.page-shell,.article-shell,.category-inner{padding-left:14px;padding-right:14px}.brand-logo:has(img) + .brand-copy{display:none}.category-groups small{display:block;margin-left:0}.button-row{display:grid;grid-template-columns:minmax(0,1fr)}.btn{width:100%}}
@media (min-width:768px) and (max-width:1024px){.page-intro h1{font-size:32px}h2{font-size:24px}h3{font-size:19px}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
.category-groups a.is-current,.service-strip a.is-current{color:var(--copper);font-weight:700;text-decoration:underline;text-underline-offset:4px}