:root{--sky:#48BAF1;--sky-soft:#BFEAFF;--sky-pale:#E9F8FF;--navy:#14344F;--navy-deep:#102B42;--action-blue:#116A9B;--action-hover:#0D5278;--paper:#FAFCFE;--white:#fff;--fog:#F2F7FA;--border:#DBEAF2;--title:#173754;--body:#354A59;--muted:#416A80;--coral:#F08B82;--mint:#7BC7B4;--lavender:#AD9CDE;--apricot:#E2B36A}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--body);font-family:-apple-system,BlinkMacSystemFont,'Microsoft YaHei','PingFang SC',sans-serif;font-size:16px;line-height:1.76}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button,a{touch-action:manipulation}button{cursor:pointer}img{max-width:100%;height:auto}h1,h2,h3,p{margin-top:0}h1,h2,h3{color:var(--title);line-height:1.35}.container{width:min(1260px,calc(100% - 64px));margin-inline:auto}.skip{position:absolute;top:-70px;left:12px;background:white;padding:12px;z-index:150}.skip:focus{top:4px}.header{background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:60}.header-inner{height:70px;display:flex;align-items:center;justify-content:space-between;gap:22px}.brand{display:flex;align-items:center;gap:9px;color:var(--navy);white-space:nowrap}.brand strong{font-size:24px;letter-spacing:.4px}.brand small{font-size:10px;display:block;letter-spacing:1.1px;color:var(--muted);line-height:1.2}.logo{width:82px;height:44px;object-fit:contain}.primary{display:flex;align-items:center;gap:22px;font-weight:700;font-size:14px}.primary a:hover,.rail-inner a:hover,.section-heading a:hover{color:var(--action-blue)}.header-actions{display:flex;align-items:center;gap:14px;white-space:nowrap}.menu-button,.search-link{border:0;background:var(--sky-pale);color:var(--navy);padding:9px 13px;border-radius:10px;font-weight:700;min-height:44px}.category-rail{background:var(--sky-pale);border-bottom:1px solid #cfeaf7}.rail-inner{display:flex;gap:25px;align-items:center;overflow-x:auto;white-space:nowrap;scrollbar-width:thin;min-height:43px;font-size:13px;font-weight:600}.hero{margin-top:30px;border:1px solid var(--border);border-radius:18px;min-height:340px;background:linear-gradient(125deg,#e6f8ff 12%,#fff 62%,#c9eaf7 100%);display:grid;grid-template-columns:44% 56%;overflow:hidden}.hero-copy{padding:52px 45px;align-self:center}.hero h1{font-size:40px;letter-spacing:-1.2px;margin:10px 0 15px}.hero p{max-width:450px;font-size:17px}.eyebrow{color:var(--action-blue);font-size:12px;letter-spacing:.08em;font-weight:800;display:block;margin:0 0 10px}.btn{display:inline-flex;align-items:center;justify-content:center;background:var(--action-blue);color:#fff;border:0;border-radius:11px;padding:11px 19px;font-weight:700;min-height:44px}.btn:hover{background:var(--action-hover);color:white}.btn-outline{border:1px solid var(--action-blue);color:var(--action-blue);background:#fff}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.hero-visual{position:relative;background:linear-gradient(135deg,#aee4fa,#83c9ef 52%,#d7f3ff);display:flex;align-items:center;justify-content:center;overflow:hidden}.hero-visual img{width:100%;height:100%;max-height:380px;object-fit:contain}.hero-mark{font-size:clamp(44px,7vw,108px);font-weight:900;color:#125a82;letter-spacing:-.08em;opacity:.28}.quick-links{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:12px;margin:26px 0 47px}.quick-links a{border:1px solid var(--border);background:#fff;border-radius:12px;text-align:center;padding:17px 8px;font-weight:750;color:var(--navy);min-height:55px}.quick-links a:hover{background:var(--sky-pale)}.home-layout{display:grid;grid-template-columns:155px minmax(0,1fr) 250px;gap:26px}.left-guide,.right-guide{align-self:start;position:sticky;top:130px}.sidebox{border:1px solid var(--border);background:white;border-radius:14px;padding:18px;margin-bottom:16px}.sidebox h3{font-size:16px;margin-bottom:12px}.sidebox a{display:block;padding:8px 0;font-size:14px;border-bottom:1px solid var(--fog)}.sidebox a:last-child{border:0}.main-feed{min-width:0}.feed-section{margin-bottom:50px}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:12px;margin-bottom:18px;border-bottom:1px solid var(--border);padding-bottom:12px}.section-heading h2{font-size:25px;margin:0}.section-heading>a{font-size:13px;font-weight:700;color:var(--action-blue);white-space:nowrap}.story-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}.story{border:1px solid var(--border);background:white;border-radius:13px;overflow:hidden;min-width:0;transition:transform .15s}.story:hover{transform:translateY(-2px)}.story>a{display:block;padding:20px}.story h3{font-size:18px;line-height:1.5;margin:4px 0 8px}.story p{font-size:14px;margin:0 0 10px;color:var(--muted);line-height:1.7}.thumb{width:100%;height:180px;object-fit:contain;background:var(--sky-pale);border-radius:10px;margin-bottom:15px}.more{font-size:12px;font-weight:800;color:var(--action-blue)}.story-large{background:linear-gradient(130deg,#f0fbff,#fff)}.topic-strip{display:grid;grid-template-columns:1.1fr 1fr;gap:18px}.topic-feature{padding:25px;background:var(--navy);color:white;border-radius:14px}.topic-feature h3{color:#fff;font-size:22px}.topic-feature p{color:#dcf2fd}.topic-feature .btn{background:#fff;color:var(--navy)}.topic-list{border-radius:14px;background:white;border:1px solid var(--border);padding:20px}.topic-list a{display:block;padding:10px 0;border-bottom:1px solid var(--border);font-weight:600}.topic-list a:last-child{border:0}.page-intro{padding:48px 0 27px}.page-intro h1{font-size:34px;margin:0 0 10px}.page-intro p{max-width:750px;color:var(--muted)}.category-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-bottom:44px}.category-card{border:1px solid var(--border);padding:22px;background:white;border-radius:14px}.category-card h3{font-size:19px}.category-card p{font-size:14px}.content-panel{background:#fff;border:1px solid var(--border);border-radius:15px;padding:25px;margin-bottom:35px}.content-panel h2{font-size:23px}.reading{max-width:780px;margin:0 auto 80px}.reading h1{font-size:36px}.reading .lead{font-size:19px;color:var(--muted)}.reading p{font-size:17px;line-height:1.84;margin-bottom:23px}.reading .meta-line{color:var(--muted);font-size:13px;margin-bottom:25px}.breadcrumbs{font-size:13px;margin:22px 0;color:var(--muted)}.breadcrumbs a{color:var(--action-blue)}.tags{display:flex;flex-wrap:wrap;gap:8px;margin:28px 0}.tags span{padding:5px 11px;background:var(--sky-pale);border-radius:15px;font-size:12px;color:var(--navy)}.search-form{display:flex;gap:10px;max-width:740px;margin:8px 0 32px}.input{border:1px solid #adc9d7;border-radius:10px;background:#fff;width:100%;padding:12px 14px;min-height:46px}.search-form button{white-space:nowrap}.pages{display:flex;flex-wrap:wrap;gap:8px;margin:25px 0 55px}.pages a{padding:8px 13px;border:1px solid var(--border);border-radius:8px;background:#fff}.pages .selected{background:var(--action-blue);color:#fff}.forum-top{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:25px}.thread-item{background:white;border:1px solid var(--border);border-radius:12px;margin:12px 0;padding:19px}.thread-item h3{font-size:18px;margin:5px 0 6px}.thread-item p{font-size:14px;margin:0;color:var(--muted)}.thread-meta{font-size:12px;color:var(--action-blue);font-weight:700}.notice{background:var(--sky-pale);border-left:4px solid var(--action-blue);border-radius:8px;padding:16px 18px;margin:18px 0}.warning{background:#fff4ed;border-left:4px solid #ad5528}.form-row{margin:15px 0}.form-row label{font-weight:700;display:block;margin-bottom:8px}.form-row textarea{min-height:140px;resize:vertical}.muted{color:var(--muted);font-size:13px}.error{color:#a12222}.empty{min-height:50vh;padding-top:60px}.footer{background:var(--navy-deep);color:#e5f5fc;padding:48px 0 20px;margin-top:55px}.footer-grid{display:grid;grid-template-columns:2.1fr repeat(4,1fr);gap:25px}.footer h3{font-size:14px;color:#fff}.footer a{display:block;margin-bottom:7px;font-size:13px}.footer-brand{font-weight:900;font-size:19px!important}.footer p{max-width:330px;color:#d5eaf5;font-size:14px}.copyright{border-top:1px solid #33566e;margin-top:30px;padding-top:16px;font-size:12px;color:#c8e1ed}.copyright a{display:inline}.mobile-tabs{display:none}.overlay{position:fixed;inset:0;background:#102b42aa;z-index:90}.drawer{position:fixed;right:0;top:0;bottom:0;width:min(430px,88vw);background:#fff;z-index:100;overflow:auto;box-shadow:-10px 0 45px #1235}.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:18px;border-bottom:1px solid var(--border)}.drawer-head button{background:var(--sky-pale);border:0;padding:6px 13px;border-radius:8px}.drawer-list{display:grid;grid-template-columns:1fr 1fr;gap:4px 10px;padding:17px}.drawer-list a{padding:7px 9px;border-bottom:1px solid var(--fog);font-size:14px}.drawer[hidden],.overlay[hidden]{display:none!important}@media(max-width:1200px){.home-layout{grid-template-columns:minmax(0,1fr) 240px}.left-guide{display:none}.primary{gap:12px}.hero h1{font-size:34px}}@media(max-width:850px){.container{width:calc(100% - 36px)}.primary{display:none}.hero{grid-template-columns:1fr;min-height:0}.hero-copy{padding:37px 27px 25px}.hero-visual{min-height:185px}.hero-visual img{max-height:240px}.home-layout{grid-template-columns:1fr}.right-guide{position:static;display:grid;grid-template-columns:1fr 1fr;gap:14px}.quick-links{grid-template-columns:repeat(3,1fr)}.category-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:repeat(3,1fr)}.footer-grid>div:first-child{grid-column:1/-1}}@media(max-width:600px){body{padding-bottom:62px}.container{width:calc(100% - 32px)}.header-inner{height:64px}.brand strong{font-size:21px}.brand small{font-size:9px}.search-link{display:none}.hero{margin-top:17px;border-radius:13px}.hero h1{font-size:29px}.hero-copy{padding:30px 22px}.hero p{font-size:15px}.quick-links{gap:7px;margin:17px 0 36px}.quick-links a{font-size:13px;padding:12px 5px}.story-grid{grid-template-columns:1fr}.story>a{padding:19px}.section-heading h2{font-size:21px}.feed-section{margin-bottom:35px}.topic-strip{grid-template-columns:1fr}.right-guide{grid-template-columns:1fr}.category-grid{grid-template-columns:1fr}.reading h1{font-size:27px}.reading p{font-size:16px}.page-intro{padding:30px 0 15px}.page-intro h1{font-size:27px}.footer-grid{grid-template-columns:repeat(2,1fr);gap:20px}.mobile-tabs{position:fixed;bottom:0;left:0;right:0;z-index:80;display:flex;justify-content:space-around;background:#fff;border-top:1px solid var(--border);height:62px}.mobile-tabs a{text-align:center;display:grid;align-content:center;color:var(--navy);line-height:1.3;font-size:20px}.mobile-tabs span{display:block;font-size:11px}.search-form{gap:6px}.search-form .btn{padding:8px 12px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.story{transition:none}}

/* TOPIC ATLAS edition. All original :root sky/navy color tokens remain unchanged. */
.atlas-home{padding-top:24px}.atlas-head{display:grid;grid-template-columns:1.1fr .9fr;min-height:390px;border:1px solid var(--border);border-radius:18px;overflow:hidden;background:var(--sky-pale)}.atlas-title{padding:55px clamp(25px,4vw,65px);display:flex;align-items:flex-start;justify-content:center;flex-direction:column}.atlas-marker{font-size:13px;letter-spacing:.12em;color:var(--action-blue);font-weight:800}.atlas-title h1{font-size:clamp(31px,3.25vw,46px);line-height:1.29;margin:14px 0;color:var(--navy-deep)}.atlas-title h1 em{font-style:normal;color:var(--action-blue)}.atlas-title>p:not(.atlas-marker){max-width:600px;font-size:16px;line-height:1.85}.atlas-visual{background:linear-gradient(150deg,var(--sky-soft),var(--sky),var(--navy));display:flex;align-items:center;justify-content:center;overflow:hidden}.atlas-banner{height:100%;width:100%;object-fit:contain;max-height:450px}.atlas-fallback{display:flex;gap:18px;align-items:center;color:var(--navy);opacity:.8}.atlas-fallback strong{font-size:clamp(100px,11vw,170px);letter-spacing:-.11em}.atlas-fallback span{font-size:clamp(18px,2vw,30px);font-weight:900;letter-spacing:.16em;line-height:1.15}.atlas-nav{display:flex;align-items:center;gap:10px;overflow-x:auto;padding:19px 0;border-bottom:1px solid var(--border);white-space:nowrap}.atlas-nav strong{color:var(--navy);font-size:13px;flex:none;margin-right:4px}.atlas-nav a{flex:none;border:1px solid var(--border);background:#fff;padding:8px 13px;border-radius:9px;font-size:13px}.atlas-first{display:grid;grid-template-columns:minmax(0,1fr) 315px;gap:26px;margin-top:34px}.atlas-heading{border-bottom:2px solid var(--navy);display:flex;gap:16px;align-items:center;margin-bottom:16px;padding:0 0 12px;flex-wrap:wrap}.atlas-heading h2{font-size:25px;margin:0 auto 0 0}.atlas-heading a{font-size:13px;font-weight:800;color:var(--action-blue)}.atlas-featurelist{display:grid;grid-template-columns:1.2fr 1fr;gap:14px}.atlas-featurelist .story:first-child{grid-row:span 3;background:var(--sky-pale)}.atlas-featurelist .story:first-child h3{font-size:24px}.atlas-featurelist .story:first-child .thumb{height:220px}.atlas-featurelist .story:not(:first-child) .thumb{height:90px}.atlas-brief{background:var(--navy);color:#fff;border-radius:14px;padding:26px}.atlas-brief h2{color:#fff;font-size:24px;margin:9px 0}.atlas-brief p{color:#dceef8;font-size:14px}.atlas-brief .eyebrow{color:var(--sky-soft)}.atlas-brief ol{padding-left:22px;margin:24px 0}.atlas-brief li{margin:0 0 25px;padding-left:6px}.atlas-brief li strong,.atlas-brief li span{display:block}.atlas-brief li span{color:#c6e2f1;font-size:13px;margin-top:5px}.atlas-brief>a{color:var(--sky-soft);font-weight:800}.atlas-midtitle{text-align:center;padding:55px 15px 28px}.atlas-midtitle h2{font-size:32px;margin:6px 0}.atlas-midtitle p{font-size:14px}.atlas-lane{display:grid;grid-template-columns:230px minmax(0,1fr);gap:24px;align-items:start;padding:24px 0;border-top:1px solid var(--border)}.atlas-lane-label{padding:12px 6px}.atlas-lane-label span{color:var(--action-blue);font-size:12px;font-weight:800;letter-spacing:.12em}.atlas-lane-label h2{font-size:24px;margin:12px 0 9px}.atlas-lane-label p{font-size:14px;margin:0 0 14px}.atlas-lane-label a{color:var(--action-blue);font-weight:800;font-size:13px}.atlas-lane-articles{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.atlas-lane-articles .story{box-shadow:none;border:1px solid var(--border);border-radius:12px}.atlas-lane-articles .story .thumb{height:160px}.atlas-discuss{display:grid;grid-template-columns:42% 1fr;background:var(--sky-pale);border-radius:14px;overflow:hidden;align-items:center;margin-top:42px}.atlas-discuss>div:nth-child(2){padding:28px 38px}.atlas-discuss h2{font-size:27px;line-height:1.4}.atlas-discuss p{font-size:15px}.atlas-discuss-img{width:100%;height:230px;object-fit:contain}.atlas-last{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;margin:36px 0 20px}.atlas-last a{border-left:4px solid var(--sky);padding:20px;background:#fff;display:grid;gap:7px}.atlas-last strong{font-size:20px;color:var(--navy)}.atlas-last small{font-size:13px;color:var(--muted)}@media(max-width:1000px){.atlas-first{grid-template-columns:1fr}.atlas-brief ol{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.atlas-lane{grid-template-columns:180px 1fr}}@media(max-width:720px){.atlas-head{grid-template-columns:1fr}.atlas-title{padding:35px 22px}.atlas-visual{min-height:190px}.atlas-title h1{font-size:32px}.atlas-featurelist{grid-template-columns:1fr 1fr}.atlas-lane{grid-template-columns:1fr;gap:10px}.atlas-lane-label{padding:5px}.atlas-lane-articles{grid-template-columns:1fr 1fr}.atlas-brief ol{grid-template-columns:1fr;gap:0}.atlas-discuss{grid-template-columns:1fr}.atlas-discuss>div:nth-child(2){padding:25px}.atlas-last{grid-template-columns:1fr}.atlas-midtitle{padding-top:35px}}@media(max-width:490px){.atlas-featurelist{grid-template-columns:1fr}.atlas-featurelist .story:first-child{grid-row:auto}.atlas-lane-articles{grid-template-columns:1fr}.atlas-first{margin-top:24px}.atlas-midtitle h2{font-size:26px}}