:root { --blue:#0d55f4; --blue-deep:#053bb4; --navy:#071e3f; --cream:#f7f3eb; }
html { scroll-padding-top:110px; }
body { overflow-x:hidden; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, summary:focus-visible { outline:3px solid #57b9ff; outline-offset:3px; }
.skip-link { position:fixed; z-index:1000; top:-90px; left:16px; background:white; color:var(--blue-deep); padding:10px 16px; border-radius:0 0 10px 10px; font-weight:800; }
.skip-link:focus { top:0; }
.powered-strip { background:#08294d; color:white; font-size:12px; letter-spacing:.08em; text-transform:uppercase; font-weight:800; }
.powered-inner { min-height:38px; display:flex; align-items:center; justify-content:flex-end; gap:12px; }
.powered-inner img { width:100px; height:auto; display:block; object-fit:contain; filter:brightness(0) invert(1); }
.site-header { position:sticky; top:0; z-index:30; background:rgba(255,255,255,.97); backdrop-filter:blur(14px); -webkit-backdrop-filter:blur(14px); box-shadow:0 1px 0 rgba(10,42,84,.1),0 8px 22px rgba(7,30,63,.06); }
.top-nav a[aria-current="page"] { color:var(--blue); }
.mobile-nav:not([hidden]) { position:fixed; top:110px; z-index:35; }
.breadcrumbs { display:flex; align-items:center; flex-wrap:wrap; gap:8px; padding-top:11px; padding-bottom:11px; font-size:13px; color:#5b6d83; background:var(--cream); }
.breadcrumbs a { color:var(--blue-deep); font-weight:700; }
.breadcrumbs a:hover { text-decoration:underline; }
.breadcrumbs span[aria-current="page"] { overflow:hidden; text-overflow:ellipsis; white-space:nowrap; max-width:50vw; }
.hero-meta span { display:inline-flex; align-items:center; gap:8px; font-size:14px; font-weight:700; color:#e4f1ff; }
.hero-meta span::before { content:'✦'; display:grid; place-items:center; width:28px; height:28px; border:1px solid rgba(255,255,255,.45); border-radius:9px; color:#c9f3ff; }
.hero-image { background-image:linear-gradient(90deg,var(--blue) 0%,rgba(13,85,244,.16) 42%,rgba(6,40,109,.1) 100%),url('/images/hero-yacht.jpg'); }
.feature-photo { display:block; width:100%; height:470px; object-fit:cover; background:none; }
.home-links { display:flex; flex-wrap:wrap; align-items:center; gap:24px; margin-top:28px; }
.home-links a, .chapter-end-links a, .contact-links a { color:var(--blue); font-weight:800; }
.home-links a:hover, .chapter-end-links a:hover, .contact-links a:hover { text-decoration:underline; }
.pathway-cards { display:grid; gap:13px; }
.pathway-card { background:white; border:1px solid #d9e4f8; border-radius:16px; padding:18px 20px; display:flex; gap:18px; }
.pathway-card > span { display:grid; place-items:center; width:38px; height:38px; flex:none; background:var(--blue); color:white; border-radius:10px; font-family:'Plus Jakarta Sans',Arial,sans-serif; font-weight:800; }
.pathway-card h3 { margin:0; font:800 17px/1.35 'Plus Jakarta Sans',Arial,sans-serif; }
.pathway-card p { margin:5px 0 10px; font-size:14px; line-height:1.48; }
.pathway-links { display:flex; flex-wrap:wrap; gap:7px; }
.pathway-links a { background:#eef4ff; padding:5px 9px; border-radius:7px; color:var(--blue-deep); font-size:12px; font-weight:800; }
.pathway-links a:hover { background:#dcecff; }
.home-final { padding-top:96px; padding-bottom:96px; display:grid; grid-template-columns:1.1fr .9fr; gap:65px; align-items:center; }
.home-final img { width:100%; height:auto; aspect-ratio:16/9; object-fit:cover; border-radius:24px; box-shadow:0 26px 48px rgba(7,30,63,.12); }
.home-final h2 { font:800 clamp(36px,4vw,56px)/1.1 'Plus Jakarta Sans',Arial,sans-serif; letter-spacing:-.055em; margin:12px 0 18px; }
.home-final p { font-size:18px; color:var(--muted); }
.site-footer { display:grid; grid-template-columns:auto minmax(260px,1fr) auto; align-items:start; gap:40px; }
.footer-copy { max-width:510px; }
.footer-copy strong { color:white; display:block; margin-bottom:8px; font-size:14px; }
.footer-copy p { line-height:1.55; }
.footer-links { display:grid; grid-template-columns:repeat(3,auto); column-gap:20px; row-gap:8px; }
.footer-links a { font-size:13px; }
.course-top.top-with-image { display:flex; align-items:stretch; min-height:245px; overflow:hidden; padding:0; }
.course-top.top-with-image .container { padding-top:50px; padding-bottom:48px; width:100%; position:relative; z-index:1; }
.course-top.top-with-image img { width:34%; min-width:300px; height:auto; object-fit:cover; mask-image:linear-gradient(90deg,transparent,black 24%); }
.course-top.top-with-image .page-title, .course-top.top-with-image p { max-width:760px; }
.course-body { grid-template-columns:285px minmax(0,1fr); gap:30px; }
.course-sidebar { top:108px; max-height:calc(100vh - 126px); overflow:auto; }
.course-sidebar details { border-bottom:1px solid var(--line); }
.course-sidebar summary { list-style:none; cursor:pointer; padding:15px 18px; display:flex; align-items:center; gap:8px; font-size:14px; font-weight:800; }
.course-sidebar summary::-webkit-details-marker { display:none; }
.course-sidebar summary:hover, .course-sidebar details[open] summary { background:#eef5ff; color:var(--blue-deep); }
.course-sidebar summary span:first-child { color:var(--blue); font-size:11px; white-space:nowrap; }
.course-sidebar summary span:last-child { margin-left:auto; font-size:20px; transition:transform .15s; }
.course-sidebar details[open] summary span:last-child { transform:rotate(180deg); }
.sidebar-title { display:flex; justify-content:space-between; gap:10px; align-items:center; }
.sidebar-title span { color:var(--blue); font:800 12px/1.4 'DM Sans',Arial,sans-serif; white-space:nowrap; }
.sidebar-lessons { display:grid; padding:5px 12px 14px; }
.sidebar-lessons a { padding:8px; display:flex; align-items:center; gap:9px; color:#52657d; font-size:13px; line-height:1.35; border-radius:8px; }
.sidebar-lessons a:hover,.sidebar-lessons a.current { background:#e5f0ff; color:var(--blue-deep); font-weight:800; }
.lesson-content { min-width:0; }
.lesson-content .lesson-breadcrumb { margin-bottom:12px; }
.lesson-content .lesson-deck { margin-bottom:14px; }
.lesson-content .chapter-article { margin-top:38px; }
.lesson-content h2:not(.related-panel h2) { letter-spacing:-.04em; }
.lesson-content a:not(.lesson-row):not(.related-grid a):not(.source-grid a):not(.button-primary):not(.complete-button):not(.source-link):not(.next-link) { color:var(--blue-deep); }
.lesson-content a:hover { text-decoration:underline; }
.course-index .index-part { border-top:1px solid var(--line); padding-top:35px; margin-top:45px; }
.course-index .index-part:first-of-type { border-top:0; margin-top:0; }
.course-index .index-part h2 { font:800 29px/1.2 'Plus Jakarta Sans',Arial,sans-serif; margin:9px 0 7px; }
.course-index .index-part > p { color:var(--muted); margin:0 0 22px; }
.concept-graphic { margin:34px 0 38px; border:1px solid #cbdcf8; border-radius:17px; background:#f4f8ff; padding:22px; }
.concept-graphic figcaption { color:#123e7d; font:800 17px/1.3 'Plus Jakarta Sans',Arial,sans-serif; margin-bottom:18px; }
.concept-graphic p { color:#52657d; font-size:13px; margin:16px 0 0; }
.system-flow { display:flex; align-items:stretch; gap:13px; }
.system-flow a { display:grid; gap:7px; flex:1; padding:18px; background:white; border:1px solid #cfddf4; border-radius:12px; text-decoration:none; }
.system-flow a:hover { border-color:var(--blue); text-decoration:none; }
.system-flow a small { color:var(--blue); font-weight:800; letter-spacing:.1em; }
.system-flow a strong { font:800 16px/1.35 'Plus Jakarta Sans',Arial,sans-serif; color:var(--navy); }
.system-flow a span { color:#54708c; font-size:12px; }
.system-junction { display:grid; place-items:center; color:var(--blue-deep); font-weight:800; }
.steps-graphic ol { list-style:none; padding:0; display:grid; grid-template-columns:repeat(4,1fr); gap:9px; }
.steps-graphic li { display:grid; gap:10px; background:white; border:1px solid #d3e2fb; border-radius:12px; padding:15px; color:#274263; font-size:13px; font-weight:800; }
.steps-graphic li b { background:var(--blue); color:white; width:32px; height:32px; border-radius:9px; display:grid; place-items:center; }
.tide-bars { display:grid; grid-template-columns:repeat(6,1fr); gap:10px; align-items:end; min-height:192px; }
.tide-bars > div { display:flex; flex-direction:column; align-items:center; justify-content:end; min-width:0; gap:5px; }
.tide-bars span { display:block; width:100%; border-radius:7px 7px 0 0; background:linear-gradient(180deg,#41c8f4,var(--blue)); }
.tide-bars strong { color:#123e7d; font-size:13px; }
.tide-bars small { color:#60758d; font-size:11px; }
.lesson-pager,.lesson-pager a { color:var(--blue); }
.lesson-pager { display:flex; flex-wrap:wrap; gap:14px; text-align:right; }
.lesson-pager a { font-weight:800; font-size:14px; }
.lesson-pager a:hover { text-decoration:underline; }
.related-panel { margin-top:55px; padding-top:37px; border-top:1px solid var(--line); }
.related-panel h2 { font:800 30px/1.2 'Plus Jakarta Sans',Arial,sans-serif; margin:8px 0 22px; }
.related-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:12px; }
.related-grid a { position:relative; display:flex; flex-direction:column; gap:8px; padding:19px; min-height:178px; border:1px solid #dce7f6; border-radius:14px; background:#f8fbff; text-decoration:none; }
.related-grid a:hover { border-color:#9ebcf3; background:#edf5ff; text-decoration:none; }
.related-grid span { color:var(--blue); font-size:12px; font-weight:800; }
.related-grid strong { font:800 15px/1.3 'Plus Jakarta Sans',Arial,sans-serif; color:var(--navy); }
.related-grid small { color:#61738a; font-size:12px; line-height:1.4; }
.related-grid b { position:absolute; right:15px; top:15px; color:var(--blue); }
.chapter-end-links { display:flex; flex-wrap:wrap; gap:20px; border-top:1px solid var(--line); padding-top:22px; margin-top:28px; font-size:14px; }
.reference-intro { color:#425873; font-size:17px; line-height:1.7; margin:0 0 27px; }
.source-group { margin:37px 0 0; padding-top:24px; border-top:1px solid var(--line); }
.source-group h2 { font:800 25px/1.25 'Plus Jakarta Sans',Arial,sans-serif; margin:0 0 12px; }
.source-group p { color:#52657d; margin:0 0 18px; }
.source-grid a { text-decoration:none; }
.source-grid a strong { font-weight:800; }
.source-grid a:hover { text-decoration:none; }
.glossary-item h2 { font:800 17px/1.25 'Plus Jakarta Sans',Arial,sans-serif; margin:0 0 7px; color:var(--blue-deep); }
.simple-page { max-width:1050px; padding-top:65px; padding-bottom:100px; }
.simple-page h2 { font:800 28px/1.3 'Plus Jakarta Sans',Arial,sans-serif; letter-spacing:-.035em; margin:0 0 15px; }
.simple-page p { color:#405672; font-size:17px; line-height:1.78; }
.simple-page a:not(.button-primary) { color:var(--blue-deep); font-weight:800; }
.simple-page a:hover { text-decoration:underline; }
.simple-page section { margin-top:43px; padding-top:33px; border-top:1px solid var(--line); }
.simple-page .disclaimer-lead { background:#fff7e8; border:1px solid #eddcb6; border-left:5px solid #e2a52a; border-radius:0 14px 14px 0; padding:26px 30px; }
.disclaimer-lead strong { color:#6e4d07; font:800 24px/1.2 'Plus Jakarta Sans',Arial,sans-serif; }
.disclaimer-lead p { margin-bottom:0; }
.simple-actions { display:flex; gap:22px; align-items:center; flex-wrap:wrap; margin-top:42px; }
.simple-actions .button-primary { padding:13px 20px; }
.contact-layout { display:grid; max-width:1240px; grid-template-columns:.75fr 1fr; gap:90px; align-items:start; }
.contact-layout > div > h2 { font-size:33px; }
.contact-links { display:grid; gap:10px; margin-top:28px; }
.contact-form { border:1px solid #dbe7f7; box-shadow:0 18px 45px rgba(7,30,63,.08); background:white; border-radius:20px; padding:34px; display:grid; }
.contact-form h2 { margin-bottom:4px; }
.contact-form p { font-size:14px; line-height:1.55; margin:0 0 24px; }
.contact-form label { color:#2f4a6b; font-size:14px; font-weight:800; margin:16px 0 7px; }
.contact-form input,.contact-form textarea { width:100%; border:1px solid #b9c9df; background:#fbfdff; padding:12px 13px; border-radius:9px; color:var(--navy); font:inherit; }
.contact-form input:focus,.contact-form textarea:focus { border-color:var(--blue); }
.contact-form textarea { resize:vertical; min-height:135px; }
.contact-form button { border:0; margin-top:23px; padding:14px 20px; cursor:pointer; }
.contact-form .form-help { margin:12px 0 0; min-height:20px; }
.contact-guide { margin-top:40px; padding-top:30px; border-top:1px solid var(--line); }
.contact-guide h2 { font-size:21px; margin-top:26px; }
.contact-guide p { font-size:15px; line-height:1.68; }
@media (max-width:1100px) {
  .site-footer { grid-template-columns:1fr 1fr; }
  .footer-links { grid-column:1 / -1; }
  .course-body { grid-template-columns:245px minmax(0,1fr); gap:20px; }
  .related-grid { grid-template-columns:1fr; }
  .related-grid a { min-height:0; }
}
@media (max-width:760px) {
  html { scroll-padding-top:112px; }
  .powered-strip { position:sticky; top:0; z-index:32; }
  .powered-inner { min-height:30px; justify-content:center; font-size:10px; }
  .powered-inner img { width:76px; }
  .site-header { top:30px; }
  .mobile-nav:not([hidden]) { top:102px; }
  .hero-image { background-image:linear-gradient(180deg,rgba(13,85,244,.96) 0%,rgba(13,85,244,.79) 53%,rgba(13,85,244,.24) 100%),url('/images/hero-yacht.jpg'); }
  .hero-meta { gap:13px; }
  .hero-meta span { font-size:11px; }
  .hero-meta span::before { width:22px; height:22px; }
  .feature-photo { height:290px; }
  .home-final { grid-template-columns:1fr; gap:28px; padding-top:60px; padding-bottom:70px; }
  .home-final p { font-size:16px; }
  .site-footer { grid-template-columns:1fr; gap:12px; }
  .footer-links { grid-column:auto; grid-template-columns:repeat(3,auto); margin-top:12px; }
  .course-top.top-with-image { display:block; }
  .course-top.top-with-image .container { padding-top:41px; padding-bottom:36px; }
  .course-top.top-with-image img { display:none; }
  .course-body { grid-template-columns:1fr; }
  .course-sidebar { max-height:none; overflow:visible; }
  .sidebar-lessons { display:grid; }
  .system-flow { display:grid; }
  .system-junction { height:22px; }
  .steps-graphic ol { grid-template-columns:repeat(2,1fr); }
  .contact-layout { grid-template-columns:1fr; gap:30px; }
  .contact-form { padding:25px 20px; }
  .simple-page { padding-top:45px; padding-bottom:65px; }
}
@media (max-width:480px) {
  .breadcrumbs { font-size:11px; }
  .hero-meta span:last-child { display:none; }
  .footer-links { grid-template-columns:repeat(2,auto); }
  .related-grid { gap:9px; }
  .tide-bars { gap:4px; }
  .tide-bars small { font-size:9px; }
  .concept-graphic { padding:17px; }
  .steps-graphic li { padding:11px; }
}
/* 2026 editorial system: fast native typography, clear focus, generous targets. */
body,button,input,textarea,.brand,.footer-brand,.hero h1,.page-title,.section-title,.quick-item strong,.module-number,.module-card h3,.feature-copy h2,.journey h2,.pathway-card>span,.lesson-content h2,.lesson-row h3,.sidebar-title,.chapter-article>h3,.glossary-item h2,.simple-page h2,.disclaimer-lead strong,.related-panel h2 { font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","Segoe UI",Arial,sans-serif !important; }
a,button,input,textarea,summary,[tabindex] { -webkit-tap-highlight-color:rgba(13,85,244,.16); }
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible,[tabindex]:focus-visible { outline:3px solid #47a3ff; outline-offset:3px; }
.top-nav a,.header-action,.mobile-nav a,.footer-links a { min-height:44px; display:inline-flex; align-items:center; }
.guide-index-intro { display:grid; grid-template-columns:.8fr 1.2fr; gap:90px; align-items:end; padding-top:75px; padding-bottom:45px; }
.guide-index-intro h2 { font-size:clamp(36px,4vw,58px); line-height:1.05; letter-spacing:-.055em; margin:10px 0 0; }
.guide-index-intro p { color:var(--muted); font-size:18px; margin:0; }
.guide-library { padding-bottom:100px; }
.library-head { border-top:1px solid var(--line); padding-top:38px; margin:35px 0 25px; display:flex; align-items:end; justify-content:space-between; gap:30px; }
.library-head h2 { font-size:32px; letter-spacing:-.04em; margin:0; }
.library-head p { color:var(--muted); max-width:560px; margin:0; }
.guide-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:16px; }
.guide-card { background:#fff; border:1px solid var(--line); border-radius:20px; padding:25px; min-height:310px; display:flex; flex-direction:column; transition:transform .2s,box-shadow .2s,border-color .2s; }
.guide-card:hover { transform:translateY(-4px); box-shadow:0 18px 34px rgba(7,30,63,.09); border-color:#a9c4f4; }
.guide-card>div { display:flex; justify-content:space-between; gap:12px; }
.guide-type { color:var(--blue); font-size:11px; font-weight:800; letter-spacing:.1em; text-transform:uppercase; }
.guide-place { color:#71839a; font-size:12px; font-weight:700; }
.guide-card h3 { font-size:22px; line-height:1.2; letter-spacing:-.035em; margin:27px 0 12px; }
.guide-card p { color:var(--muted); font-size:15px; line-height:1.6; margin:0 0 25px; }
.guide-card>strong { color:var(--blue); margin-top:auto; }
.guide-library>.course-notice { margin-top:35px; }
.answer-card { max-width:920px; background:linear-gradient(135deg,#083db6,#0d65fa); color:#fff; border-radius:22px; padding:28px 32px; box-shadow:0 18px 44px rgba(13,85,244,.16); }
.answer-card>span { color:#cae1ff; font-size:11px; font-weight:800; letter-spacing:.14em; }
.answer-card>p { color:#fff !important; font-size:clamp(19px,2vw,24px) !important; line-height:1.5 !important; margin:10px 0 0 !important; }
.guide-article { padding-top:52px; padding-bottom:100px; }
.guide-columns { display:grid; grid-template-columns:minmax(0,780px) 300px; gap:70px; align-items:start; margin-top:45px; }
.guide-copy>section { padding-top:38px; margin-top:38px; border-top:1px solid var(--line); }
.guide-copy h2,.next-library h2 { font-size:30px; letter-spacing:-.04em; line-height:1.2; margin:0 0 14px; }
.guide-copy p { color:#405672; font-size:17px; line-height:1.78; }
.guide-context { background:#eef5ff; color:#34506f; border-radius:14px; padding:20px 22px; }
.guide-context a { color:var(--blue-deep); font-weight:800; text-decoration:underline; text-decoration-thickness:1px; text-underline-offset:3px; }
.guide-meta { display:flex; flex-wrap:wrap; gap:8px 19px; margin-top:18px; font-size:12px; color:#dcecff; }
.guide-meta a { color:#fff; text-decoration:underline; }
.guide-checklist ol { list-style:none; padding:0; display:grid; gap:10px; }
.guide-checklist li { display:flex; align-items:flex-start; gap:12px; background:#f6f9ff; border:1px solid #dfebfb; border-radius:12px; padding:13px 15px; font-weight:700; }
.guide-checklist li span { color:var(--blue); }
.guide-aside { position:sticky; top:126px; display:grid; gap:16px; }
.guide-aside>div { background:white; border:1px solid var(--line); border-radius:17px; padding:21px; }
.guide-aside h2 { font-size:15px; margin:8px 0 12px; }
.guide-aside a { display:block; border-top:1px solid var(--line); padding:14px 0; }
.guide-aside a:last-child { padding-bottom:0; }
.guide-aside small { display:block; color:var(--blue); font-size:10px; letter-spacing:.08em; font-weight:800; }
.guide-aside strong { display:block; font-size:14px; line-height:1.35; margin-top:4px; }
.guide-sources a { min-height:54px; border:1px solid var(--line); border-radius:12px; display:flex; justify-content:space-between; align-items:center; gap:20px; padding:12px 15px; margin-top:9px; color:var(--blue-deep); font-weight:800; }
.faq-list details { border-top:1px solid var(--line); }
.faq-list details:last-child { border-bottom:1px solid var(--line); }
.faq-list summary { min-height:62px; display:flex; align-items:center; justify-content:space-between; gap:25px; padding:14px 2px; cursor:pointer; font-weight:800; list-style:none; }
.faq-list summary::-webkit-details-marker { display:none; }
.faq-list summary span { color:var(--blue); font-size:22px; transition:transform .2s; }
.faq-list details[open] summary span { transform:rotate(45deg); }
.faq-list p { margin:0; padding:0 30px 22px 2px; color:var(--muted); }
.next-library { background:#071e3f; color:white; border-radius:22px; padding:30px; margin-top:65px; display:flex; align-items:center; justify-content:space-between; gap:35px; }
.next-library span { color:#93bcf5; font-size:12px; font-weight:800; text-transform:uppercase; }
.next-library h2 { max-width:640px; margin:7px 0 0; }
.next-library .button-primary { padding:14px 18px; white-space:nowrap; }
.faq-page { max-width:980px; }
.faq-page>.faq-list { margin-top:45px; }
.faq-page>.faq-list summary { font-size:18px; }
.faq-next { margin-top:60px !important; }
.tips-page { max-width:1180px; }
.tips-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:14px; margin-top:45px; }
.tips-grid section { background:#fff; border:1px solid var(--line); border-radius:17px; margin:0; padding:24px; }
.tips-grid section>span { display:grid; place-items:center; width:37px; height:37px; background:#eaf2ff; color:var(--blue); border-radius:10px; font-weight:800; }
.tips-grid h2 { font-size:21px; margin:24px 0 8px; }
.tips-grid p { font-size:15px; line-height:1.65; margin:0; }
.tip-method { background:#071e3f; color:white; border:0 !important; border-radius:22px; padding:35px !important; display:grid; grid-template-columns:.8fr 1.2fr; gap:40px; }
.tip-method h2 { font-size:34px; }
.tip-method ol { margin:0; padding-left:22px; }
.tip-method li { color:#d4e2f2; padding:8px; }
.authority-ribbon { background:#fff; padding:40px 0; border-top:1px solid var(--line); border-bottom:1px solid var(--line); overflow:hidden; }
.authority-ribbon .eyebrow { text-align:center; }
.authority-ribbon p { color:var(--muted); text-align:center; font-size:13px; margin:18px 0 0; }
.authority-ribbon p a { color:var(--blue); font-weight:800; }
.logo-rail { overflow:hidden; margin-top:20px; mask-image:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent); }
.logo-track { width:max-content; display:flex; align-items:center; gap:12px; animation:logo-scroll 38s linear infinite; }
.logo-track:hover { animation-play-state:paused; }
.logo-track span { min-height:54px; display:flex; align-items:center; padding:0 24px; border:1px solid var(--line); border-radius:13px; color:#334a67; background:#fbfdff; font-size:14px; font-weight:800; white-space:nowrap; }
@keyframes logo-scroll { to { transform:translateX(-50%); } }
.editorial-feature { background:#e8f0ff; padding:90px 0; }
.editorial-layout { display:grid; grid-template-columns:1.2fr .8fr; gap:65px; align-items:center; }
.editorial-layout img { width:100%; aspect-ratio:16/9; object-fit:cover; border-radius:24px; box-shadow:0 20px 50px rgba(7,30,63,.13); }
.editorial-layout h2 { font-size:clamp(36px,4vw,58px); line-height:1.08; letter-spacing:-.055em; margin:12px 0 18px; }
.editorial-layout p { color:var(--muted); font-size:17px; }
.editorial-layout .button-primary { padding:14px 18px; margin-top:10px; }
.tooltip-term { position:relative; color:var(--blue-deep); font-weight:800; border-bottom:1px dashed currentColor; cursor:help; }
.tooltip-term [role=tooltip] { position:absolute; z-index:50; left:50%; bottom:calc(100% + 10px); width:240px; transform:translate(-50%,5px); padding:10px 12px; background:#071e3f; color:#fff; border-radius:9px; font-size:12px; line-height:1.4; font-weight:600; opacity:0; visibility:hidden; pointer-events:none; transition:.15s; }
.tooltip-term:hover [role=tooltip],.tooltip-term:focus [role=tooltip] { opacity:1; visibility:visible; transform:translate(-50%,0); }
@media (max-width:1000px) { .guide-grid,.tips-grid { grid-template-columns:repeat(2,1fr); } .guide-columns { grid-template-columns:minmax(0,1fr) 260px; gap:35px; } .editorial-layout { gap:35px; } }
@media (max-width:760px) {
  .header-action { display:none; }
  .guide-index-intro,.guide-columns,.editorial-layout,.tip-method { grid-template-columns:1fr; }
  .guide-index-intro { gap:20px; padding-top:50px; }
  .library-head { display:block; }
  .library-head p { margin-top:8px; }
  .guide-grid,.tips-grid { grid-template-columns:1fr; }
  .guide-card { min-height:0; }
  .guide-article { padding-top:28px; padding-bottom:65px; }
  .answer-card { padding:23px 20px; border-radius:17px; }
  .guide-columns { margin-top:30px; gap:35px; }
  .guide-aside { position:static; }
  .next-library { display:block; }
  .next-library .button-primary { margin-top:20px; white-space:normal; }
  .editorial-feature { padding:65px 0; }
  .editorial-layout img { border-radius:17px; }
  .logo-rail { margin-left:-20px; margin-right:-20px; }
  .tips-grid section { padding:21px; }
  .tip-method { padding:25px 21px !important; gap:12px; }
}
@media (prefers-reduced-motion:reduce) { *,*::before,*::after { scroll-behavior:auto !important; transition-duration:.01ms !important; animation-duration:.01ms !important; } .logo-track { animation:none; } }