:root{color-scheme:light;--bg: #ffffff;--ink: #071225;--muted: #536176;--soft: #f7faff;--line: #dbe5f5;--blue: #0057e6;--blue-2: #0f6bff;--green: #16bf82;--shadow: 0 18px 45px rgba(12, 41, 92, .08);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;color:var(--ink);background:var(--bg)}*{box-sizing:border-box}html{scroll-behavior:smooth}.anchor-target{position:relative;top:-88px;display:block;width:1px;height:1px}body{margin:0;background:#fff}a{color:inherit;text-decoration:none}button{font:inherit}.site-header{position:sticky;top:0;z-index:20;display:grid;grid-template-columns:150px 1fr auto;align-items:center;min-height:74px;padding:0 max(42px,calc((100vw - 1280px)/2));border-bottom:1px solid var(--line);background:#ffffffeb;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px)}.brand img{width:88px;height:auto}.desktop-nav{display:flex;justify-content:center;gap:clamp(24px,3.2vw,54px);color:#25324a;font-size:13px;font-weight:650}.nav-item{position:relative;display:flex;min-height:74px;align-items:center}.nav-link{display:inline-flex;align-items:center;gap:4px;min-height:74px;white-space:nowrap}.nav-caret{color:#7a8aa3;font-size:14px;transform:translateY(-1px)}.nav-submenu{position:absolute;top:calc(100% - 8px);left:50%;z-index:30;display:grid;min-width:180px;padding:10px;border:1px solid var(--line);border-radius:6px;background:#fff;box-shadow:0 18px 42px #0d27551f;opacity:0;pointer-events:none;transform:translate(-50%,8px);transition:opacity .14s ease,transform .14s ease}.nav-submenu:before{content:"";position:absolute;top:-10px;left:0;right:0;height:10px}.nav-item:hover .nav-submenu,.nav-item:focus-within .nav-submenu{opacity:1;pointer-events:auto;transform:translate(-50%)}.nav-submenu a{display:flex;align-items:center;min-height:36px;padding:0 10px;border-radius:4px;color:#24324a;font-size:13px;font-weight:650;white-space:nowrap}.nav-submenu a:hover,.nav-submenu a:focus-visible{background:#edf4ff;color:var(--blue);outline:none}.header-actions{display:flex;align-items:center;gap:24px}.login-link{color:#25324a;font-size:14px;font-weight:650}.primary-button,.secondary-button,.outline-button,.light-button{display:inline-flex;align-items:center;justify-content:center;min-height:52px;border-radius:4px;font-size:15px;font-weight:760;transition:transform .16s ease,box-shadow .16s ease,background .16s ease}.primary-button{min-width:166px;padding:0 26px;background:linear-gradient(180deg,#086bff,#0052d9);color:#fff;box-shadow:0 14px 32px #0057e638}.primary-button.small{min-width:112px;min-height:40px;border-radius:3px;font-size:14px}.secondary-button,.outline-button{min-width:188px;padding:0 26px;border:1px solid var(--blue);color:var(--blue);background:#fff}.primary-button:hover,.secondary-button:hover,.outline-button:hover,.light-button:hover{transform:translateY(-1px)}.mobile-menu{display:none;justify-self:end;width:44px;height:44px;border:1px solid var(--line);border-radius:5px;background:#fff;color:var(--ink)}.mobile-nav{position:absolute;top:64px;left:18px;right:18px;display:grid;gap:6px;padding:14px;border:1px solid var(--line);border-radius:8px;background:#fff;box-shadow:var(--shadow);max-height:calc(100vh - 84px);overflow-y:auto}.mobile-nav a{padding:12px;font-weight:700}.mobile-nav-group{display:grid;border-bottom:1px solid #eef3fb}.mobile-nav-group>a{color:#17243a}.mobile-subnav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px;padding:0 8px 10px}.mobile-subnav a{min-height:34px;padding:8px 10px;border-radius:4px;background:#f6f9ff;color:#40506a;font-size:12px;font-weight:650}.mobile-nav-action{background:var(--blue);color:#fff;text-align:center}.hero-section,.section,.cta-section,.site-footer{width:min(1280px,calc(100% - 72px));margin:0 auto}.hero-section{padding:52px 0 36px;border-bottom:1px solid var(--line)}.hero-grid{display:grid;grid-template-columns:minmax(520px,.92fr) minmax(560px,1.08fr);gap:clamp(44px,5.5vw,76px);align-items:center}.hero-copy h1{max-width:700px;margin:0;font-size:clamp(52px,5vw,68px);line-height:1.08;letter-spacing:0}.hero-copy p{max-width:540px;margin:24px 0 0;color:var(--muted);font-size:17px;line-height:1.85}.hero-actions{display:flex;flex-wrap:wrap;gap:24px;margin-top:42px}.workbench-card{overflow:hidden;border:1px solid var(--line);border-radius:7px;background:#fff;box-shadow:0 18px 48px #0b26560f}.workbench-title{height:46px;padding:14px 18px;border-bottom:1px solid var(--line);color:#0d1a32;font-size:16px;font-weight:760}.workbench-body{display:grid;grid-template-columns:132px 1fr 128px;min-height:308px}.workbench-side{display:grid;align-content:start;gap:5px;padding:12px;border-right:1px solid var(--line);background:#fbfdff}.workbench-side div{display:flex;align-items:center;gap:8px;min-height:33px;padding:0 8px;border-radius:4px;color:#40506a;font-size:12px;font-weight:650}.workbench-side .active{background:#eaf2ff;color:var(--blue)}.workbench-flow{position:relative;display:grid;grid-template-columns:repeat(2,minmax(118px,1fr));gap:24px 44px;align-content:center;padding:28px 32px}.flow-node{position:relative;z-index:1;display:flex;align-items:center;gap:8px;min-height:42px;padding:0 13px;border:1px solid #c7d8f5;border-radius:6px;background:#fff;color:#25324a;font-size:13px;font-weight:760}.flow-line{position:absolute;z-index:-1;pointer-events:none}.flow-line.horizontal{top:50%;left:100%;width:44px;border-top:1px dashed rgba(0,87,230,.55)}.flow-line.vertical{top:100%;left:28px;height:25px;border-left:1px dashed rgba(0,87,230,.55)}.flow-node svg,.module-card svg,.method-card svg,.do-engine-card svg{color:var(--blue)}.metric-board{display:grid;align-content:start;gap:8px;padding:18px 16px;border-left:1px solid var(--line);background:#fbfdff}.metric-board span{margin-bottom:14px;color:#4a5870;font-size:13px;font-weight:760}.metric-board strong{font-size:24px}.metric-board small{margin-bottom:10px;color:var(--muted);font-size:12px}.hero-proof{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:38px;color:#304058}.hero-proof div{display:flex;justify-content:center;align-items:center;gap:10px;font-size:14px;font-weight:650}.hero-proof svg,.knowledge-grid svg{color:var(--blue)}.section{padding:50px 0;border-bottom:1px solid var(--line)}.section-title{margin-bottom:38px;text-align:center}.section-title h2{margin:0;font-size:clamp(28px,3vw,38px);line-height:1.2}.section-title p{margin:14px 0 0;color:var(--muted);font-size:16px}.module-frame{display:grid;grid-template-columns:repeat(4,1fr);border:2px solid var(--blue);border-radius:11px;background:#fff}.module-card{position:relative;scroll-margin-top:96px;display:grid;grid-template-columns:52px 1fr;gap:18px;min-height:212px;padding:38px 26px 26px;border-right:1px dashed #b9c8e3;border-bottom:1px dashed #b9c8e3}.module-card:nth-child(4n){border-right:none}.module-card:nth-last-child(-n+4){border-bottom:none}.module-badge{position:absolute;top:-20px;left:50%;display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--blue);color:#fff;font-size:13px;font-weight:850;transform:translate(-50%)}.module-card h3,.method-card h3,.do-engine-card h3,.knowledge-grid h3,.case-card h3{margin:0;font-size:18px;line-height:1.35}.module-card p,.method-card p,.do-engine-card p,.knowledge-grid p,.case-card p{margin:10px 0 0;color:var(--muted);font-size:14px;line-height:1.65}.module-card ul,.method-card ul,.do-engine-card ul{margin:16px 0 0;padding-left:16px;color:#34435c;font-size:13px;line-height:1.75}.do-engine-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}.do-engine-card{scroll-margin-top:96px;min-height:264px;padding:28px;border:1px solid var(--line);border-top:3px solid var(--blue);border-radius:6px;background:linear-gradient(180deg,#fff,#fbfdff);box-shadow:0 10px 28px #0d27550d}.do-engine-card h3{margin-top:18px}.method-chain{display:grid;grid-template-columns:repeat(7,1fr);gap:32px}.method-card{position:relative;scroll-margin-top:96px;min-height:232px;padding:0}.method-no{display:block;margin-bottom:18px;color:var(--blue);font-size:16px;font-weight:850}.method-icon{display:grid;place-items:center;width:112px;height:112px;margin-bottom:18px;border:1px solid var(--line);border-radius:8px;background:#fff}.method-arrow{position:absolute;top:82px;right:-25px;color:#96a7c0;font-size:42px;line-height:1}.knowledge-section{text-align:center}.knowledge-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:26px;margin-top:20px;text-align:left}.knowledge-grid article{scroll-margin-top:96px;min-height:166px;padding:10px 8px}.knowledge-grid h3{margin-top:18px}.outline-button{min-height:42px;min-width:190px;margin-top:34px;border-radius:3px;font-size:14px}.case-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}.case-card{scroll-margin-top:96px;padding:26px;border:1px solid var(--line);border-radius:6px;background:#fff;box-shadow:0 8px 28px #0d27550a}.case-card>span{display:inline-flex;margin-bottom:16px;padding:6px 10px;border-radius:3px;background:#edf4ff;color:var(--blue);font-size:12px;font-weight:800}.case-metrics{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:22px}.case-metrics strong{display:block;color:var(--green);font-size:22px}.case-metrics small{color:var(--muted);font-size:12px}.case-card a{display:inline-flex;margin-top:22px;color:var(--blue);font-size:14px;font-weight:760}.cases-section>.outline-button{display:flex;width:190px;margin-right:auto;margin-left:auto}.course-hero,.course-detail-hero,.course-list-section,.course-detail-section,.course-tools-section{width:min(100% - 72px,1280px);margin-right:auto;margin-left:auto}.course-hero,.course-detail-hero{padding:74px 0 34px}.course-hero-grid,.course-detail-hero-grid{display:grid;grid-template-columns:minmax(0,1.02fr) minmax(360px,.72fr);gap:42px;align-items:end}.course-eyebrow{display:inline-flex;align-items:center;min-height:28px;margin-bottom:18px;padding:0 10px;border:1px solid #bcd1f6;border-radius:999px;background:#f4f8ff;color:var(--blue);font-size:13px;font-weight:800}.course-hero h1,.course-detail-hero h1{max-width:820px;margin:0;font-size:clamp(42px,5.2vw,78px);line-height:1.08;letter-spacing:0}.course-hero p,.course-detail-hero p{max-width:760px;margin:20px 0 0;color:var(--muted);font-size:18px;line-height:1.85}.course-hero-panel,.course-detail-panel{border:1px solid var(--line);border-radius:8px;background:#fff;box-shadow:var(--shadow)}.course-hero-panel{display:grid;gap:14px;padding:24px}.course-stat{display:grid;grid-template-columns:72px 1fr;gap:16px;align-items:center;padding:12px 0;border-bottom:1px solid #eef3fb}.course-stat:last-child{border-bottom:none}.course-stat strong{color:var(--blue);font-size:34px;line-height:1}.course-stat span{color:#17243a;font-size:15px;font-weight:760}.course-list-section,.course-detail-section,.course-tools-section{padding:40px 0 34px;border-top:1px solid var(--line)}.course-track-tabs{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}.course-track-tabs a{display:inline-flex;align-items:center;min-height:38px;padding:0 16px;border:1px solid var(--line);border-radius:999px;background:#fff;color:#24324a;font-size:14px;font-weight:760}.course-track-tabs a.active{border-color:var(--blue);background:#edf4ff;color:var(--blue)}.course-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.course-card{display:grid;align-content:start;min-height:360px;padding:22px;border:1px solid var(--line);border-radius:8px;background:#fff;box-shadow:0 16px 34px #0c295c0f}.course-card-top{display:flex;justify-content:space-between;gap:14px;align-items:center;margin-bottom:18px}.course-track{color:var(--blue);font-size:13px;font-weight:900}.course-level{padding:4px 8px;border-radius:999px;background:#f3f7fd;color:#536176;font-size:12px;font-weight:760}.course-card h2,.course-card h3{margin:0;color:#071225;font-size:22px;line-height:1.35;letter-spacing:0}.course-card p{margin:12px 0 18px;color:var(--muted);font-size:14px;line-height:1.75}.course-card dl{display:grid;gap:10px;margin:0 0 20px}.course-card div:has(>dt){display:grid;grid-template-columns:68px 1fr;gap:10px}.course-card dt{color:#7a8aa3;font-size:13px;font-weight:760}.course-card dd{margin:0;color:#25324a;font-size:13px;font-weight:680;line-height:1.6}.course-card-action{align-self:end;color:var(--blue);font-size:14px;font-weight:820}.course-detail-panel{padding:24px}.course-detail-panel h2{margin:0 0 18px;font-size:18px}.course-meta-grid{display:grid;gap:14px}.course-meta-grid div{padding-bottom:14px;border-bottom:1px solid #eef3fb}.course-meta-grid div:last-child{padding-bottom:0;border-bottom:none}.course-meta-grid span{display:block;margin-bottom:6px;color:#7a8aa3;font-size:13px;font-weight:760}.course-meta-grid strong{display:block;color:#17243a;font-size:15px;line-height:1.65}.course-module-list{display:grid;gap:14px}.course-module-card{display:grid;grid-template-columns:52px 1fr minmax(220px,.55fr);gap:18px;align-items:start;padding:20px;border:1px solid var(--line);border-radius:8px;background:#fff}.course-module-no{display:grid;place-items:center;width:38px;height:38px;border-radius:999px;background:var(--blue);color:#fff;font-size:14px;font-weight:900}.course-module-card h3{margin:0 0 8px;font-size:20px}.course-module-card p,.course-module-card strong{margin:0;color:var(--muted);font-size:14px;line-height:1.75}.course-module-card strong{display:block;padding:12px 14px;border-left:3px solid var(--green);background:#f3fbf8;color:#17372d}.course-tools-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.course-tool-pill{display:flex;align-items:center;min-height:58px;padding:0 16px;border:1px solid var(--line);border-radius:8px;background:#fff;color:#17243a;font-size:14px;font-weight:780}.course-not-found{width:min(100% - 72px,880px);min-height:52vh;margin:0 auto;padding:92px 0}.course-not-found h1{margin:0;font-size:44px}.course-not-found p{color:var(--muted);line-height:1.8}.cta-section{margin-top:28px;overflow:hidden;border-radius:5px;background:linear-gradient(135deg,#0057e6,#076bff 70%),#0057e6;color:#fff}.cta-section>div{min-height:132px;padding:30px 48px;background-image:linear-gradient(145deg,transparent 45%,rgba(255,255,255,.14) 45.5%,transparent 46.5%);background-size:42px 42px}.cta-section h2{margin:0;font-size:28px}.cta-section p{margin:10px 0 18px;color:#ffffffd6}.light-button{min-width:112px;min-height:34px;padding:0 18px;border-radius:3px;background:#fff;color:var(--blue);font-size:13px}.site-footer{display:grid;grid-template-columns:230px repeat(6,minmax(92px,1fr)) 120px;gap:22px;padding:30px 0 18px}.footer-company img{width:88px;margin-bottom:14px}.footer-company p,.footer-column a,.qr-box,.footer-bottom{color:var(--muted);font-size:12px;line-height:1.8}.footer-company p{margin:0}.footer-column{display:grid;align-content:start;gap:8px}.footer-column h3{margin:0 0 8px;color:#17243a;font-size:14px}.qr-box{text-align:center}.qr-box div{display:grid;place-items:center;width:74px;height:74px;margin:0 auto 8px;border:1px solid var(--line);color:#17243a;font-weight:900}.qr-box span,.qr-box small{display:block}.footer-bottom{grid-column:1 / -1;padding-top:18px;border-top:1px solid var(--line);text-align:center}@media(max-width:1100px){.hero-grid,.course-hero-grid,.course-detail-hero-grid,.module-frame,.method-chain,.do-engine-grid,.knowledge-grid,.case-grid,.site-footer{grid-template-columns:repeat(2,1fr)}.module-card:nth-child(2n){border-right:none}.module-card:nth-last-child(-n+4){border-bottom:1px dashed #b9c8e3}.module-card:nth-last-child(-n+2){border-bottom:none}.method-arrow{display:none}.course-list,.course-tools-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:820px){.site-header{grid-template-columns:auto 1fr auto;min-height:64px;padding:0 18px}.desktop-nav,.header-actions{display:none}.mobile-menu{display:grid;place-items:center}.hero-section,.section,.course-hero,.course-detail-hero,.course-list-section,.course-detail-section,.course-tools-section,.course-not-found,.cta-section,.site-footer{width:min(100% - 28px,1280px)}.hero-section,.course-hero,.course-detail-hero{padding-top:48px}.hero-grid,.course-hero-grid,.course-detail-hero-grid,.module-frame,.method-chain,.do-engine-grid,.knowledge-grid,.case-grid,.site-footer{grid-template-columns:1fr}.hero-copy h1,.course-hero h1,.course-detail-hero h1{font-size:clamp(40px,11vw,56px)}.course-list{grid-template-columns:1fr}.course-card{min-height:auto}.course-module-card,.course-tools-grid,.workbench-body{grid-template-columns:1fr}.workbench-side,.metric-board{display:none}.workbench-flow{grid-template-columns:1fr}.hero-proof{grid-template-columns:1fr 1fr}.module-card,.module-card:nth-child(2n),.module-card:nth-child(4n),.module-card:nth-last-child(-n+2),.module-card:nth-last-child(-n+4){border-right:none;border-bottom:1px dashed #b9c8e3}.module-card:last-child{border-bottom:none}.cta-section>div{padding:28px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}