:root{--red:#B93A32;--amber:#D98A3A;--ink:#252322;--bg:#FAF8F5;--soft:#F2EDE7;--text:#3B3836;--muted:#77716D;--accent:#E05A3F;--line:#ded6cf;--radius:20px;--shadow:0 16px 42px rgba(37,35,34,.08)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.72}img{max-width:100%;height:auto;display:block}a{color:inherit;text-decoration:none}a:hover{color:var(--red)}.shell{width:min(1180px,calc(100% - 40px));margin-inline:auto}.skip-link{position:absolute;left:-999px;top:10px;background:#fff;padding:10px 14px;z-index:99}.skip-link:focus{left:10px}.site-header{position:sticky;top:0;z-index:40;background:rgba(250,248,245,.94);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}.header-row{min-height:78px;display:flex;align-items:center;justify-content:space-between;gap:28px}.brand{display:flex;align-items:center;gap:12px}.brand img{border-radius:12px}.brand span{display:grid}.brand strong{font-size:20px;color:var(--ink)}.brand small{font-size:12px;color:var(--muted)}.primary-nav{display:flex;align-items:center;gap:26px;font-weight:650}.primary-nav a{padding:8px 0}.menu-button{display:none;border:1px solid var(--line);background:#fff;border-radius:12px;padding:10px 14px;color:var(--ink)}.hero{display:grid;grid-template-columns:1.05fr .95fr;gap:54px;align-items:center;padding-block:64px 42px}.hero__copy h1,.page-intro h1,.product-hero h1,.article-body h1,.not-found h1{font-size:clamp(38px,6vw,70px);line-height:1.08;letter-spacing:-.035em;color:var(--ink);margin:10px 0 20px}.lead,.page-intro>p:last-child,.product-hero p,.article-deck{font-size:19px;color:#59524d;max-width:760px}.eyebrow{color:var(--red);font-size:13px;font-weight:800;letter-spacing:.08em;text-transform:uppercase}.hero__actions{display:flex;gap:18px;align-items:center;margin-top:28px}.button{display:inline-flex;padding:13px 20px;border-radius:14px;background:var(--red);color:#fff;font-weight:800}.button:hover{color:#fff;filter:brightness(.96)}.text-link{font-weight:800;border-bottom:1px solid currentColor}.hero__points{display:flex;flex-wrap:wrap;gap:10px 18px;padding:0;margin:28px 0 0;list-style:none;color:var(--muted);font-size:14px}.hero__points li:before{content:"•";color:var(--amber);margin-right:8px}.hero__visual img{border-radius:28px;box-shadow:var(--shadow);aspect-ratio:9/6.2;object-fit:cover}.section-block{padding-block:54px}.section-heading{display:flex;justify-content:space-between;align-items:end;gap:28px;margin-bottom:24px}.section-heading h2,.topic-group h2,.notice-panel h2,.submission-main h2{font-size:clamp(28px,4vw,42px);line-height:1.14;margin:6px 0;color:var(--ink)}.section-heading>a{font-weight:800;color:var(--red)}.featured-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:18px}.story-card{grid-column:span 4;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:0 8px 24px rgba(37,35,34,.04)}.story-card:nth-child(1),.story-card:nth-child(2){grid-column:span 6}.story-card__media img{width:100%;aspect-ratio:16/10;object-fit:cover}.story-card__body{padding:20px}.story-card h3{font-size:22px;line-height:1.32;color:var(--ink);margin:6px 0 10px}.story-card p{margin:0;color:var(--muted)}.ticker-band{background:var(--ink);color:#fff;margin-block:30px}.ticker-inner{display:grid;grid-template-columns:160px 1fr;gap:24px;padding-block:18px}.ticker-inner p{margin:0;color:#ddd}.split-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:34px}.story-list{display:grid;gap:14px}.story-card--compact{display:grid;grid-template-columns:210px 1fr;grid-column:auto}.story-card--compact .story-card__media img{height:100%;aspect-ratio:auto;object-fit:cover}.index-panel{background:var(--soft);border-radius:var(--radius);padding:24px;height:max-content;position:sticky;top:100px}.index-panel h2{font-size:26px;color:var(--ink);margin-top:0}.index-panel a{display:flex;justify-content:space-between;gap:10px;padding:11px 0;border-top:1px solid #ddd1c7}.index-panel small{color:var(--muted)}.function-strip{display:grid;grid-template-columns:1fr 1fr;gap:22px;padding-block:32px 74px}.function-strip article{display:grid;grid-template-columns:190px 1fr;gap:18px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px}.function-strip img{width:100%;height:100%;min-height:180px;object-fit:cover;border-radius:14px}.function-strip h2{margin:4px 0;color:var(--ink)}.function-strip p{color:var(--muted)}.function-strip a{font-weight:800;color:var(--red)}.page-main{padding-block:52px 80px}.page-intro{padding:12px 0 36px}.page-intro.narrow{max-width:850px}.page-intro h1{font-size:clamp(40px,5vw,62px)}.topic-group{padding:36px 0;border-top:1px solid var(--line)}.topic-group__heading{display:flex;align-items:center;justify-content:space-between}.topic-group__heading span{color:var(--muted)}.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.topic-grid .story-card{grid-column:auto}.product-hero{display:grid;grid-template-columns:1fr .9fr;gap:44px;align-items:center;background:var(--soft);border-radius:28px;padding:42px;margin-bottom:34px}.product-hero img{border-radius:20px}.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.steps-grid article{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px}.steps-grid span{font-size:12px;font-weight:900;color:var(--red)}.steps-grid h2{font-size:21px;color:var(--ink)}.steps-grid p{color:var(--muted)}.notice-panel{display:grid;grid-template-columns:.8fr 1.2fr;gap:28px;align-items:center;margin-top:34px;background:#fff;border:1px solid var(--line);border-radius:24px;padding:22px}.notice-panel img{border-radius:16px}.notice-panel a{font-weight:800;color:var(--red)}.submission-layout{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:34px}.checklist-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:36px}.checklist-grid article{background:#fff;border:1px solid var(--line);padding:20px;border-radius:18px}.checklist-grid h3{margin:0 0 8px;color:var(--ink)}.checklist-grid p{margin:0;color:var(--muted)}.number-list{padding:0;list-style:none;display:grid;gap:14px}.number-list li{display:grid;grid-template-columns:180px 1fr;background:var(--soft);padding:16px 18px;border-radius:14px}.submission-aside{display:grid;gap:16px;height:max-content}.submission-aside img{border-radius:18px}.aside-card{background:var(--soft);border-radius:18px;padding:22px}.aside-card h2{color:var(--ink)}.aside-card a{display:block;color:var(--red);font-weight:750;padding:7px 0}.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:44px;padding-block:40px 80px}.breadcrumb{display:flex;flex-wrap:wrap;gap:8px;color:var(--muted);font-size:14px;margin-bottom:26px}.article-body h1{font-size:clamp(38px,5vw,62px)}.article-hero{width:100%;border-radius:24px;margin:30px 0;max-height:600px;object-fit:cover}.prose{font-size:18px}.prose p{margin:0 0 22px}.prose h2{font-size:30px;color:var(--ink);margin-top:42px}.prose li{margin-bottom:10px}.article-aside{padding-top:90px}.site-footer{background:var(--ink);color:#e8e1dc;padding:44px 0 18px}.footer-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px}.footer-grid p{color:#b9b1aa;max-width:560px}.footer-grid nav{display:flex;justify-content:flex-end;gap:22px}.copyright{text-align:center;color:#8f8781;font-size:13px;margin:30px 0 0}.not-found{padding-block:90px 120px}.not-found p{max-width:700px}.not-found h1{max-width:800px}@media(max-width:900px){.hero,.product-hero,.article-layout,.submission-layout{grid-template-columns:1fr}.article-aside{padding-top:0}.steps-grid{grid-template-columns:1fr 1fr}.split-layout{grid-template-columns:1fr}.index-panel{position:static}.featured-grid .story-card{grid-column:span 6}.topic-grid{grid-template-columns:1fr 1fr}.function-strip{grid-template-columns:1fr}.primary-nav{position:absolute;right:20px;top:68px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);padding:10px;display:none;min-width:220px}.primary-nav.is-open{display:grid}.menu-button{display:block}}@media(max-width:640px){.shell{width:min(100% - 24px,1180px)}.header-row{min-height:68px}.brand small{display:none}.hero{padding-block:34px}.hero__copy h1{font-size:42px}.hero__visual{order:-1}.featured-grid,.topic-grid,.checklist-grid,.steps-grid{grid-template-columns:1fr}.featured-grid .story-card,.topic-grid .story-card{grid-column:auto}.story-card--compact{grid-template-columns:120px 1fr}.story-card--compact .story-card__body{padding:14px}.story-card--compact h3{font-size:18px}.story-card--compact p:not(.eyebrow){display:none}.ticker-inner{grid-template-columns:1fr;gap:4px}.function-strip article{grid-template-columns:1fr}.function-strip img{max-height:260px}.product-hero{padding:22px}.notice-panel{grid-template-columns:1fr}.number-list li{grid-template-columns:1fr;gap:6px}.footer-grid{grid-template-columns:1fr}.footer-grid nav{justify-content:flex-start;flex-wrap:wrap}.hero__actions{align-items:flex-start;flex-direction:column}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}:focus-visible{outline:3px solid var(--amber);outline-offset:3px}

.guide-section{max-width:900px;padding:34px 0;border-top:1px solid var(--line)}.guide-section h2{font-size:clamp(28px,4vw,40px);line-height:1.2;color:var(--ink);margin:0 0 18px}.guide-section p{font-size:17px;margin:0 0 18px}.guide-section .number-list{margin:20px 0 28px}

.about-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-bottom:54px}.about-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:24px}.about-card h2,.about-detail h2,.about-actions h2{font-size:clamp(26px,3.4vw,40px);line-height:1.2;color:var(--ink);margin:6px 0 16px}.about-card p{margin:0 0 14px}.about-detail{display:grid;grid-template-columns:280px minmax(0,1fr);gap:38px;padding:42px 0;border-top:1px solid var(--line)}.about-columns{display:grid;grid-template-columns:1fr 1fr;gap:30px}.about-columns h3{color:var(--ink);margin:0 0 8px}.about-columns p{margin:0 0 26px}.faq-list{display:grid;gap:10px}.faq-list details{background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 18px}.faq-list summary{cursor:pointer;font-weight:800;color:var(--ink)}.faq-list p{margin:12px 0 2px;color:var(--muted)}.about-actions{display:flex;justify-content:space-between;align-items:end;gap:30px;background:var(--soft);border-radius:22px;padding:28px;margin-top:30px}@media(max-width:760px){.about-grid,.about-columns{grid-template-columns:1fr}.about-detail{grid-template-columns:1fr;gap:10px}.about-actions{align-items:flex-start;flex-direction:column}}

/* Functional print treatment for readable article and guide output */
@media print{.site-header,.site-footer,.menu-button,.hero__actions,.article-aside{display:none!important}body{background:#fff;color:#111}.shell{width:100%;max-width:none}.article-layout{display:block;padding:0}.article-body,.guide-section,.about-detail{max-width:none}.story-card,.about-card,.faq-list details{box-shadow:none;border:1px solid #aaa;break-inside:avoid}a{text-decoration:underline}.article-hero{max-height:360px;object-fit:cover}.page-main{padding:0}.guide-section,.about-detail{page-break-inside:avoid}.eyebrow{color:#333}}