:root{--sysu-green-deep:#073b2c;--sysu-green-main:#0b5d45;--sysu-green-accent:#18865e;--sysu-green-light:#e7f3ed;--bg-gray:#f9fafb;--border-light:#e5e7eb;--text-primary:#111827;--text-secondary:#4b5563;--text-tertiary:#9ca3af;--radius-base:8px;--shadow-sm:0 1px 2px 0 #0000000d;color:var(--text-primary);background-color:var(--bg-gray);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:Inter,Noto Sans SC,system-ui,-apple-system,sans-serif;font-weight:400;line-height:1.5}*{box-sizing:border-box;margin:0;padding:0}body{min-height:100vh;overflow-x:hidden}button{cursor:pointer;background:0 0;border:none;font-family:inherit;transition:all .2s}.app-container{flex-direction:column;min-height:100vh;display:flex}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}.site-header{border-bottom:1px solid var(--border-light);z-index:100;background:#fff;height:64px;position:sticky;top:0}.header-content{justify-content:space-between;align-items:center;height:100%;display:flex}.brand-section{text-align:left;align-items:center;gap:12px;display:flex}.brand-logo{color:#fff;background:#fff;border:1px solid #073b2c1f;border-radius:4px;justify-content:center;align-items:center;width:32px;height:32px;padding:2px;font-weight:700;display:flex;overflow:hidden}.brand-logo img{object-fit:cover;width:100%;height:100%}.brand-info{flex-direction:column;display:flex}.brand-info h1,.brand-name{color:var(--sysu-green-deep);font-size:18px;font-weight:700;line-height:1.2}.brand-info p,.brand-subtitle{color:var(--text-tertiary);font-size:12px;line-height:1.2}.nav-links{gap:32px;display:flex}.nav-item{color:var(--text-secondary);padding:4px 0;font-size:15px;font-weight:500;position:relative}.nav-item.active{color:var(--sysu-green-deep)}.nav-item.active:after{content:"";background:var(--sysu-green-deep);width:100%;height:2px;position:absolute;bottom:-20px;left:0}.header-actions{align-items:center;gap:16px;display:flex}.btn-maintenance{border:1px solid var(--border-light);color:var(--text-secondary);border-radius:6px;align-items:center;gap:6px;padding:6px 12px;font-size:14px;display:flex}.hero-section{border-bottom:1px solid var(--border-light);background:radial-gradient(circle at 50% 18%,#e7f3edb8,#fff0 34%),#fff;padding:74px 0 66px;position:relative;overflow:hidden}.hero-bg-lines{opacity:.05;pointer-events:none;width:40%;height:100%;position:absolute;top:0;right:0}.hero-content{z-index:1;text-align:center;flex-direction:column;align-items:center;display:flex;position:relative}.hero-motion{pointer-events:none;position:absolute;inset:0;overflow:hidden}.flow-line{background:linear-gradient(90deg,#0000,#0b5d4533,#c99c3a42,#0000);width:300px;height:1px;animation:8s linear infinite flowDrift;position:absolute;transform:rotate(-36deg)}.flow-line-one{top:26%;left:12%}.flow-line-two{animation-delay:-2.6s;top:48%;left:68%}.flow-line-three{animation-delay:-5.2s;top:72%;left:28%}.particle{background:#c99c3a8c;border-radius:50%;width:4px;height:4px;animation:6s ease-in-out infinite particleFloat;position:absolute;box-shadow:0 0 12px #c99c3a47}.particle-one{top:26%;left:19%}.particle-two{animation-delay:-1.2s;top:23%;left:68%}.particle-three{animation-delay:-2.4s;top:62%;left:77%}.particle-four{animation-delay:-3.6s;top:70%;left:31%}.particle-five{animation-delay:-4.8s;top:38%;left:52%}.eyebrow{color:var(--sysu-green-accent);letter-spacing:.1em;text-transform:uppercase;margin-bottom:8px;font-size:12px;font-weight:700}.hero-title{color:var(--sysu-green-deep);background:linear-gradient(90deg,#073b2c,#0b5d45,#c99c3a,#073b2c) 0 0/220%;-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;margin-bottom:16px;font-size:72px;font-weight:800;animation:5.5s ease-in-out infinite titleFlow}.hero-subtitle{color:var(--text-secondary);max-width:600px;margin-bottom:28px;font-size:18px}.search-container{width:min(560px,100%);max-width:560px;margin:0 auto;position:relative}.search-input-wrapper{background:var(--bg-gray);border:1px solid var(--border-light);border-radius:var(--radius-base);align-items:center;height:48px;padding:0 16px;transition:all .2s;display:flex}.search-input-wrapper:focus-within{border-color:var(--sysu-green-main);background:#fff;box-shadow:0 0 0 3px #0b5d451a}.search-input-wrapper input{color:var(--text-primary);background:0 0;border:none;outline:none;flex:1;margin-left:12px;font-size:15px}.workbuddy-info-card{border-radius:var(--radius-base);text-align:left;background:linear-gradient(90deg,#e7f3edf5,#ffffffeb),#fff;border:1px solid #0b5d4524;grid-template-columns:64px minmax(0,1fr) auto;align-items:center;gap:18px;width:min(860px,100%);margin:48px auto 0;padding:18px;display:grid;box-shadow:0 14px 34px #073b2c14}.workbuddy-info-card:hover,.workbuddy-info-card:focus-visible{border-color:#0b5d4547;outline:none;transform:translateY(-1px);box-shadow:0 18px 42px #073b2c1f}.workbuddy-icon-frame{background:#fff;border-radius:16px;justify-content:center;align-items:center;width:64px;height:64px;display:flex;overflow:hidden;box-shadow:inset 0 0 0 1px #073b2c14}.workbuddy-icon-frame img{object-fit:contain;width:56px;height:56px}.workbuddy-info-copy{gap:5px;min-width:0;display:grid}.workbuddy-provider{color:#a51f19;letter-spacing:.08em;font-size:12px;font-weight:900}.workbuddy-info-copy strong{color:var(--sysu-green-deep);font-size:19px;line-height:1.35}.workbuddy-info-copy span:last-child{color:var(--sysu-green-main);font-size:14px;line-height:1.6}.workbuddy-info-action{background:var(--sysu-green-deep);color:#fff;white-space:nowrap;border-radius:6px;justify-content:center;align-items:center;gap:8px;min-height:42px;padding:0 15px;font-size:14px;font-weight:900;display:inline-flex}.main-layout{grid-template-columns:260px 1fr;gap:40px;padding:48px 24px;display:grid}.filter-sidebar h2{color:var(--text-tertiary);text-transform:uppercase;letter-spacing:.05em;margin-bottom:16px;font-size:14px;font-weight:700}.category-list{flex-direction:column;gap:4px;display:flex}.category-item{text-align:left;color:var(--text-secondary);border-radius:6px;padding:10px 16px;font-size:15px}.category-item:hover{background:#00000005}.category-item.active{background:var(--sysu-green-light);color:var(--sysu-green-deep);font-weight:600}.case-area{min-width:0}.section-header{justify-content:space-between;align-items:center;margin-bottom:24px;display:flex}.section-header h2{color:var(--sysu-green-deep);font-size:20px;font-weight:700}.section-header p{color:var(--text-secondary);margin-top:6px;font-size:14px}.case-grid-layout{display:block}.case-grid{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px;display:grid}.case-card{border:1px solid var(--border-light);border-radius:var(--radius-base);min-height:220px;box-shadow:var(--shadow-sm);cursor:pointer;background:#fff;grid-template-columns:180px 1fr;display:grid;overflow:hidden}.case-card:hover,.case-card:focus-visible{border-color:#0b5d454d;outline:none;transform:translateY(-1px);box-shadow:0 14px 34px #073b2c14}.case-cover-wrap{background:var(--sysu-green-light);min-height:100%;overflow:hidden}.case-cover-visual{background:linear-gradient(135deg, #073b2c14, #ffffffb8), var(--sysu-green-light);align-content:center;gap:12px;height:100%;padding:20px;display:grid;position:relative}.case-cover-visual:before{content:"";background:#073b2c29;width:2px;position:absolute;inset:24px auto 24px 34px}.mini-flow-node{z-index:1;box-shadow:var(--shadow-sm);background:#fff;border:1px solid #073b2c24;border-radius:8px;padding:10px 10px 10px 18px;position:relative}.mini-flow-node:before{content:"";background:var(--sysu-green-deep);border-radius:50%;width:10px;height:10px;position:absolute;top:50%;left:-7px;transform:translateY(-50%)}.mini-flow-node span{color:var(--sysu-green-deep);font-size:12px;font-weight:800}.case-card-body{flex-direction:column;gap:12px;padding:22px;display:flex}.case-card-meta{color:var(--sysu-green-main);flex-wrap:wrap;gap:8px;font-size:12px;display:flex}.case-card-meta span{background:var(--sysu-green-light);border-radius:999px;padding:4px 8px}.case-card h3{color:var(--sysu-green-deep);font-size:20px;line-height:1.35}.case-card p{color:var(--text-secondary);font-size:14px;line-height:1.7}.case-tags{flex-wrap:wrap;gap:8px;display:flex}.case-tags span{color:var(--text-secondary);background:#f4f6f5;border-radius:999px;padding:5px 9px;font-size:12px;line-height:1}.case-link{background:var(--sysu-green-deep);color:#fff;border-radius:6px;width:fit-content;margin-top:auto;padding:9px 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p{color:var(--text-secondary);font-size:14px}.placeholder-struct h4{color:var(--text-tertiary);margin-bottom:16px;font-size:14px;font-weight:700}.struct-item{align-items:flex-start;gap:12px;margin-bottom:16px;display:flex}.struct-dot{background:var(--sysu-green-accent);border-radius:50%;flex-shrink:0;width:6px;height:6px;margin-top:8px}.struct-item p{color:var(--text-secondary);font-size:14px;line-height:1.5}.open-featured{background:var(--sysu-green-deep);color:#fff;border-radius:6px;width:100%;margin-top:8px;padding:12px 16px;font-size:14px;font-weight:700}.case-detail-hero{border-bottom:1px solid var(--border-light);background:#fff;padding:40px 0;position:relative}.hero-layout{grid-template-columns:1fr 340px;align-items:center;gap:48px;display:grid}.back-link{color:var(--sysu-green-main);align-items:center;gap:6px;margin-bottom:24px;font-size:14px;font-weight:600;transition:transform 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h2{color:var(--sysu-green-deep);word-wrap:break-word;overflow-wrap:anywhere;min-width:0;font-size:20px;font-weight:700}.doc-block-body{color:var(--text-secondary);box-sizing:border-box;min-width:0;max-width:100%;font-size:16px;line-height:1.8}.intro-content{grid-template-columns:1fr 280px;align-items:start;gap:32px;display:grid}.intro-text h3{color:var(--text-primary);word-wrap:break-word;overflow-wrap:break-word;margin-bottom:12px;font-size:22px;line-height:1.4}.intro-preview-card{background:var(--sysu-green-light);border-radius:12px;min-width:0;padding:20px}.preview-label{color:var(--sysu-green-main);text-transform:uppercase;margin-bottom:12px;font-size:11px;font-weight:800}.preview-nodes{gap:12px;display:grid}.preview-node{background:#fff;border:1px solid #0b5d451a;border-radius:8px;min-width:0;padding:12px}.preview-node strong{color:var(--sysu-green-deep);word-wrap:break-word;overflow-wrap:break-word;margin-bottom:2px;font-size:14px;display:block}.preview-node 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var(--border-light);color:var(--sysu-green-main);border-radius:10px;flex-direction:column;gap:12px;padding:16px;font-size:14px;font-weight:600;display:flex}.quick-command-grid{gap:16px;min-width:0;max-width:100%;display:grid}.q-command-card{border:1px solid var(--border-light);border-radius:10px;min-width:0;max-width:100%;overflow:hidden}.q-header{background:var(--bg-gray);border-bottom:1px solid var(--border-light);justify-content:space-between;align-items:center;padding:12px 16px;display:flex}.q-header strong{color:var(--sysu-green-deep);font-size:14px}.q-command-card pre{color:var(--text-secondary);white-space:pre-wrap;word-break:break-word;overflow-wrap:anywhere;box-sizing:border-box;background:#fff;max-width:100%;margin:0;padding:16px;font-size:14px}.trouble-grid{grid-template-columns:repeat(2,1fr);gap:16px;display:grid}.trouble-doc-item{background:var(--bg-gray);border-radius:10px;padding:16px}.trouble-doc-item h4{color:var(--sysu-green-deep);margin-bottom:8px;font-size:15px}.trouble-doc-item p{font-size:14px}.completion-card{background:var(--sysu-green-deep);color:#fff;text-align:center;border-radius:16px;padding:40px}.completion-card h3{margin-bottom:12px;font-size:24px;color:#fff!important}.completion-card p{margin-bottom:24px;color:#fffc!important}.outcome-checklist{text-align:left;gap:12px;list-style:none;display:inline-grid}.outcome-checklist li{align-items:center;gap:12px;font-size:15px;font-weight:500;display:flex}@media (width<=1024px){.hero-layout{grid-template-columns:1fr;gap:32px}.resource-panel{order:-1;max-width:none;margin-bottom:24px}.tutorial-container{grid-template-columns:1fr;gap:32px;padding:32px 16px 80px}.tutorial-toc-sidebar{display:none}.case-grid-layout{grid-template-columns:1fr}.detail-placeholder{display:none}.intro-content{grid-template-columns:1fr}}@media (width<=768px){.case-detail-hero{padding:24px 0 32px}.case-title-area h1{font-size:26px}.doc-block-header h2{font-size:18px}.workflow-track{grid-template-columns:1fr;gap:16px}.workflow-step:not(:last-child):after{display:none}.material-list,.config-flow{grid-template-columns:1fr}.check-grid{grid-template-columns:repeat(auto-fit,minmax(140px,1fr))}.trouble-grid{grid-template-columns:1fr}.completion-card{padding:24px}.hero-title{font-size:42px}.site-header{padding:0 16px}.nav-links{display:none}.main-layout{grid-template-columns:1fr;gap:24px;padding:24px 16px 36px}.filter-sidebar h2{margin-bottom:12px}.category-list{scrollbar-width:none;flex-direction:row;gap:8px;padding-bottom:4px;overflow-x:auto}.category-list::-webkit-scrollbar{display:none}.category-item{border:1px solid var(--border-light);white-space:nowrap;background:#fff;border-radius:999px;flex:none}.case-card{grid-template-columns:1fr}.case-cover-wrap{height:180px}.workbuddy-info-card{grid-template-columns:46px minmax(0,1fr);gap:12px;margin-top:22px;padding:13px}.workbuddy-icon-frame{width:46px;height:46px}.workbuddy-info-action{grid-column:2;width:fit-content}.mobile-nav{display:block}.app-container{padding-bottom:64px}}.help-content{max-width:800px;margin:0 auto;padding:64px 0}.help-title{color:var(--sysu-green-deep);text-align:center;margin-bottom:40px;font-size:32px;font-weight:800}.faq-container{flex-direction:column;gap:16px;display:flex}.faq-card{border:1px solid var(--border-light);border-radius:var(--radius-base);background:#fff;overflow:hidden}.faq-trigger{text-align:left;width:100%;color:var(--text-primary);justify-content:space-between;align-items:center;padding:20px 24px;font-size:16px;font-weight:600;display:flex}.faq-trigger:hover{background:var(--bg-gray)}.faq-answer{color:var(--text-secondary);padding:0 24px 24px;font-size:15px;line-height:1.6}@keyframes titleFlow{0%,to{filter:drop-shadow(0 0 #c99c3a00);background-position:0%}50%{filter:drop-shadow(0 10px 22px #0b5d451f);background-position:100%}}@keyframes flowDrift{0%{opacity:0;transform:translate(-120px)rotate(-36deg)}18%{opacity:1}82%{opacity:1}to{opacity:0;transform:translate(180px)rotate(-36deg)}}@keyframes particleFloat{0%,to{opacity:.18;transform:translate(0,0)scale(.9)}50%{opacity:.86;transform:translate(12px,-20px)scale(1.12)}}.mobile-nav{border-top:1px solid var(--border-light);z-index:1000;background:#fff;width:100%;height:64px;padding:0 24px;display:none;position:fixed;bottom:0;left:0}.mobile-nav-content{grid-template-columns:repeat(2,1fr);height:100%;display:grid}.mobile-nav-item{color:var(--text-tertiary);flex-direction:column;justify-content:center;align-items:center;gap:4px;font-size:11px;display:flex}.mobile-nav-item.active{color:var(--sysu-green-deep)}