:root{--ink:#0b1726;--muted:#5b6b7f;--line:#dce5ee;--paper:#fff;--soft:#f4f8fb;--blue:#1769d1;--blue2:#0d4fa7;--teal:#087f73;--dark:#07121f;--shadow:0 18px 55px rgba(8,28,48,.09);--radius:18px}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;background:#fff;color:var(--ink);font-family:system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',Arial,sans-serif;line-height:1.72;overflow-x:hidden}
img{display:block;max-width:100%;height:auto}a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}.shell{width:min(1180px,calc(100% - 32px));margin:auto}
.topbar{background:var(--dark);color:#d8e3ef;font-size:12px}.topbar .shell{min-height:31px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}.header-inner{min-height:74px;display:flex;align-items:center;gap:28px}.brand,.footer-brand{display:flex;align-items:center;gap:11px;color:var(--ink);font-weight:900;font-size:21px}.brand img,.footer-brand img{border-radius:13px}.brand b{color:var(--blue)}.nav{margin-left:auto;display:flex;align-items:center;gap:17px}.nav a{color:#17283b;font-weight:700;font-size:13px}.lang-switch{border:1px solid var(--line);padding:7px 10px;border-radius:9px}.menu-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:10px;padding:7px 10px;font-size:20px}
.hero{background:radial-gradient(circle at 80% 0,#e9f3ff 0,#f7fbff 34%,#fff 72%);padding:44px 0 30px;border-bottom:1px solid #edf2f6}.hero-inner{display:grid;grid-template-columns:1.15fr .85fr;gap:36px;align-items:center}.crumbs{font-size:13px;color:#718197;margin-bottom:13px}.crumbs a{color:#617287}.eyebrow{display:inline-flex;align-items:center;gap:7px;padding:6px 10px;border-radius:999px;background:#eaf2fb;color:var(--blue);font-size:12px;font-weight:800;margin-bottom:12px}.eyebrow:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--teal)}
h1{font-size:clamp(36px,5vw,58px);line-height:1.05;letter-spacing:-.045em;margin:0 0 18px;color:#071522}h2{font-size:clamp(27px,3.2vw,38px);line-height:1.16;letter-spacing:-.03em;margin:56px 0 16px;color:#0a1827}h3{font-size:20px;line-height:1.3;margin:0 0 9px;color:#102234}p{margin:0 0 17px}.lead{font-size:18px;color:#455a70;max-width:760px}.updated{font-size:12px;color:#65758a;font-weight:700;margin:14px 0}
.app-card{display:grid;grid-template-columns:92px 1fr auto;gap:18px;align-items:center;margin-top:24px;padding:19px;border:1px solid #dce7f0;background:#fff;border-radius:20px;box-shadow:var(--shadow)}.app-card img{width:92px;height:92px;border-radius:22px}.app-title{font-size:21px;font-weight:900}.chips{display:flex;gap:7px;flex-wrap:wrap;margin-top:8px}.chip{padding:5px 9px;border:1px solid #dbe5ee;border-radius:999px;background:#f8fafc;color:#536579;font-size:11px;font-weight:800}.btn{display:inline-flex;align-items:center;justify-content:center;background:var(--blue);color:#fff!important;border:0;border-radius:12px;padding:13px 19px;font-weight:900;box-shadow:0 10px 25px rgba(23,105,209,.22);transition:.18s}.btn:hover{background:var(--blue2);text-decoration:none;transform:translateY(-1px)}.btn.secondary{background:#edf5ff;color:var(--blue)!important;box-shadow:none;border:1px solid #c9def7}.button-row{display:flex;gap:10px;flex-wrap:wrap}
.container{width:min(1080px,calc(100% - 32px));margin:auto}.content{padding-bottom:50px}.section-img{border-radius:18px;border:1px solid var(--line);box-shadow:var(--shadow);margin:17px 0 23px}
.toc{border:1px solid var(--line);border-radius:16px;background:#fff;margin:28px 0;overflow:hidden;box-shadow:0 7px 22px rgba(10,30,50,.04)}.toc summary{cursor:pointer;padding:16px 19px;background:#f7fafc;font-weight:900}.toc ul{columns:2;column-gap:35px;padding:17px 38px;margin:0}.toc li{margin:5px 0;break-inside:avoid}
.direct{border-left:4px solid var(--blue);background:#f1f7ff;border-radius:12px;padding:18px 20px;margin:28px 0}.direct strong{color:#0b2138}
.article{min-width:0}.sidebar-layout{display:grid;grid-template-columns:minmax(0,1fr) 270px;gap:34px}.sidebar{position:sticky;top:100px;height:max-content}.sidebox{border:1px solid var(--line);background:#fff;border-radius:16px;padding:18px;margin:18px 0;box-shadow:0 8px 24px rgba(10,30,50,.05)}.sidebox a{font-weight:700;font-size:14px}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}.feature{position:relative;border:1px solid #dbe5ed;border-radius:18px;padding:21px;background:linear-gradient(180deg,#fff,#f9fbfd);box-shadow:0 8px 28px rgba(10,28,48,.055);overflow:hidden}.feature:before{content:"";position:absolute;left:0;top:0;width:100%;height:3px;background:linear-gradient(90deg,var(--blue),#36a4ff)}.feature h3{font-size:19px}.feature p{color:#53667a;font-size:14px;margin:0}
.steps{display:grid;gap:12px}.step{display:grid;grid-template-columns:34px 1fr;gap:12px;border:1px solid var(--line);border-radius:14px;padding:15px;background:#fff}.step:before{content:"✓";display:grid;place-items:center;width:30px;height:30px;border-radius:9px;background:#eaf4ff;color:var(--blue);font-weight:900}.detail-list{display:grid;gap:10px;padding:0;margin:17px 0;list-style:none}.detail-list li{display:flex;gap:10px;align-items:flex-start;padding:12px 14px;background:#f8fafc;border:1px solid var(--line);border-radius:12px}.detail-list li:before{content:"✓";flex:0 0 22px;width:22px;height:22px;display:grid;place-items:center;border-radius:7px;background:#eaf4ff;color:var(--blue);font-weight:900}
.info-table{width:100%;border-collapse:collapse}.table-wrap{max-width:100%;overflow:hidden;border:1px solid var(--line);border-radius:16px;margin:20px 0;background:#fff}.info-table th,.info-table td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}.info-table th{background:#f6f9fc;color:#102234;font-size:13px}.info-table td{font-size:14px}.info-table tr:last-child td{border-bottom:0}
.comparison{display:grid;grid-template-columns:1fr 1fr;gap:16px}.compare-card{border:1px solid var(--line);border-radius:18px;padding:20px;background:#fff}.compare-card.good{background:#f4f9ff}.compare-card h3{margin-top:0}
.faq{border:1px solid var(--line);border-radius:13px;margin:10px 0;background:#fff;overflow:hidden}.faq summary{cursor:pointer;padding:14px 16px;font-weight:800}.faq .answer{padding:0 16px 15px;color:#53667a}
.note{padding:17px 18px;background:#fff8e9;border:1px solid #f2dfad;border-radius:14px;margin:20px 0}.related{border-top:1px solid var(--line);margin-top:45px;padding-top:15px}.cards,.blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.card,.post-card{border:1px solid var(--line);border-radius:16px;background:#fff;overflow:hidden;box-shadow:0 7px 24px rgba(10,28,48,.05)}.card{padding:18px}.post-card img{aspect-ratio:1200/630;object-fit:cover}.post-card .pad{padding:17px}.post-card h3{font-size:17px}.meta{font-size:11px;color:#718197;font-weight:800;margin-bottom:7px}
.kw-link{font-weight:800}.keyword-context{padding:18px;border:1px solid #dbe6ee;background:#f8fbfd;border-radius:16px;margin-top:25px;line-height:2}
.footer{margin-top:45px;background:#07121f;color:#c9d5e1;padding:44px 0 18px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:35px}.footer p{color:#94a6b8;max-width:520px}.footer-brand{color:#fff;margin-bottom:13px}.footer h3{color:#fff;font-size:14px}.footer a{display:block;color:#b9c8d7;margin:7px 0;font-size:13px}.copyright{border-top:1px solid rgba(255,255,255,.12);margin-top:30px;padding-top:15px;color:#8295a9;font-size:12px}
.backtop{position:fixed;right:20px;bottom:20px;width:42px;height:42px;border:0;border-radius:50%;background:var(--dark);color:#fff;display:none;z-index:80}.backtop.show{display:block}
@media(max-width:900px){.hero-inner{grid-template-columns:1fr}.sidebar-layout{grid-template-columns:1fr}.sidebar{position:static}.feature-grid,.cards,.blog-grid{grid-template-columns:repeat(2,1fr)}.app-card{grid-template-columns:78px 1fr}.app-card .button-row{grid-column:1/-1}.nav{gap:10px}}
@media(max-width:700px){.nav{display:none;position:absolute;left:16px;right:16px;top:68px;background:#fff;border:1px solid var(--line);border-radius:15px;padding:12px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}.nav.open{display:flex}.menu-toggle{display:block;margin-left:auto}.header-inner{position:relative}.topbar .shell{justify-content:center}.feature-grid,.cards,.blog-grid,.comparison{grid-template-columns:1fr}.toc ul{columns:1;padding-left:30px}.app-card{grid-template-columns:68px 1fr;padding:15px}.app-card img{width:68px;height:68px}.button-row .btn{width:100%}.hero{padding-top:30px}h1{font-size:36px}h2{font-size:29px}.container,.shell{width:min(100% - 24px,1080px)}.table-wrap{overflow-x:hidden}.info-table{table-layout:fixed;width:100%;min-width:0}.info-table th,.info-table td{padding:10px 8px;font-size:12px;overflow-wrap:anywhere;word-break:break-word}.info-table th:first-child,.info-table td:first-child{width:34%}.section-img{border-radius:13px}.keyword-context{font-size:13px;line-height:1.9}.footer-grid{grid-template-columns:1fr 1fr}.direct{padding:15px}.detail-list li{padding:11px}.article p{font-size:15.5px}}
@media(max-width:440px){.footer-grid{grid-template-columns:1fr}.brand{font-size:18px}.brand img{width:39px;height:39px}.header-inner{min-height:66px}}