.saiwei-page {--blue-950:#0B0D10;--blue-900:#0D0D0D;--blue-850:#0D0D0D;--blue-800:#272727;--blue-700:#C7FF2E;--blue-600:#D7FF66;--blue-300:#C7FF2E;--blue-100:#F2FFDE; --cream:#FFFFFF;--cream-2:#F4F6F8;--cream-3:#E5E7EB; --silver-50:#FFFFFF;--silver-100:#F4F6F8;--silver-200:#E5E7EB;--silver-300:#DBDBDB;--silver-400:#9F9F9F;--silver-500:#505050;--silver-600:#555555;--silver-700:#424242; --ink:#0D0D0D;--muted:#505050;--line:rgba(17,24,39,.10);--line-soft:rgba(17,24,39,.065); --shadow:0 24px 70px rgba(17,24,39,.08);--shadow-sm:0 12px 34px rgba(17,24,39,.055); --content:min(calc(100% - 36px),1350px); width:100%;overflow:hidden;background:var(--cream);color:var(--ink); font-family:"Outfit",Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;line-height:1.62;-webkit-font-smoothing:antialiased}

.saiwei-page button {font:inherit}

.saiwei-page img {display:block;width:100%;height:100%;object-fit:cover}

.saiwei-page .kicker::before {content:"";width:30px;height:2px;border-radius:999px;background:#C7FF2E}

.saiwei-page .display {margin:0;font-size:clamp(2.4rem,6.2vw,5rem);line-height:.9;letter-spacing:-.063em;font-weight:950}

.saiwei-page .section-title {margin:0;font-size:clamp(2.1rem,4vw,3.3rem);line-height:.96;letter-spacing:-.048em;font-weight:930}

.saiwei-page .section-copy {margin:19px 0 0;max-width:820px;color:var(--muted);font-size:1rem}

.saiwei-page .btn {min-height:50px;display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:13px 21px;border:1px solid transparent;border-radius:999px;font-size:.76rem;font-weight:900;letter-spacing:.085em;text-transform:uppercase;transition:.2s ease;cursor:pointer}

.saiwei-page .btn-outline {border-color:var(--silver-300);background:rgba(255,255,255,.42);color:var(--blue-900)}

.saiwei-page .btn-cream {background:var(--cream);color:var(--blue-900)}

.saiwei-page .text-link {display:inline-flex;align-items:center;gap:8px;margin-top:16px;color:#2563EB;font-size:.75rem;font-weight:900;letter-spacing:.035em;text-transform:uppercase}

.saiwei-page .text-link::after {content:"→"}

.saiwei-page .approved-pill {display:inline-flex;padding:7px 10px;border-radius:999px;background:var(--blue-100);color:#2563EB;font-size:.6rem;font-weight:900;letter-spacing:.08em;text-transform:uppercase}

.saiwei-page .header-inner {width:var(--content);min-height:76px;margin:auto;display:grid;grid-template-columns:auto 1fr auto;gap:24px;align-items:center}

.saiwei-page .brand {display:flex;align-items:center;gap:11px;color:var(--blue-900);font-size:.94rem;font-weight:950;letter-spacing:.07em;text-transform:uppercase}

.saiwei-page .brand-mark {width:34px;height:34px;display:grid;place-items:center;border-radius:12px;background:var(--blue-700);color:#0B0D10}

.saiwei-page .desktop-nav {display:flex;justify-content:center;gap:22px}

.saiwei-page .desktop-nav a {font-size:.79rem;font-weight:760;color:#424242}

.saiwei-page .menu-btn {display:none;width:46px;height:46px;border:1px solid var(--silver-300);border-radius:14px;background:var(--cream);color:var(--blue-900);cursor:pointer}

.saiwei-page .mobile-menu {position:absolute;top:76px;left:18px;right:18px;padding:10px;border:1px solid var(--silver-300);border-radius:18px;background:var(--cream);box-shadow:var(--shadow);overflow:hidden}

.saiwei-page .breadcrumb {width:var(--content);margin:auto;min-height:48px;display:flex;align-items:center;gap:9px;font-size:.72rem;color:var(--muted)}

.saiwei-page .hero {padding:52px 0 78px;background:radial-gradient(circle at 82% 10%,rgba(199,255,46,.1440),transparent 28%),linear-gradient(180deg,var(--cream),var(--cream-2))}

.saiwei-page .hero-grid {width:var(--content);margin:auto;display:grid;grid-template-columns:minmax(0,1.03fr) minmax(430px,.97fr);gap:48px;align-items:center}

.saiwei-page .hero-copy {padding:48px 0}

.saiwei-page .hero h1 {color:var(--blue-950)}

.saiwei-page .hero-lead {max-width:820px;margin:26px 0 0;color:#555555;font-size:clamp(1.04rem,1.45vw,1.22rem);line-height:1.72}

.saiwei-page .hero-actions {display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}

.saiwei-page .group-board {padding:28px;border:1px solid var(--line);border-radius:32px;background:linear-gradient(145deg,#fff,var(--silver-100));box-shadow:var(--shadow)}

.saiwei-page .group-board-head {display:flex;justify-content:space-between;gap:16px;align-items:center;padding-bottom:18px;border-bottom:1px solid var(--line)}

.saiwei-page .group-board-head strong {font-size:.76rem;letter-spacing:.11em;text-transform:uppercase;color:var(--blue-900)}

.saiwei-page .group-columns {display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:20px}

.saiwei-page .group-card {padding:18px;border-radius:18px;border:1px solid var(--line);background:rgba(255,255,255,.76)}

.saiwei-page .group-card h3 {margin:0;color:var(--blue-950);font-size:1.05rem}

.saiwei-page .group-card p {margin:8px 0 0;color:var(--muted);font-size:.8rem}

.saiwei-page .size-tags {display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}

.saiwei-page .size-tags span {padding:6px 8px;border-radius:999px;background:var(--blue-100);color:#0B0D10;font-size:.62rem;font-weight:850}

.saiwei-page .group-note {margin-top:16px;padding:15px 16px;border-radius:16px;background:var(--blue-900);color:rgba(255,255,255,.8);font-size:.8rem}

.saiwei-page .group-note strong {color:var(--blue-300)}

.saiwei-page .quick-card {padding:30px 34px;border:1px solid var(--line);border-radius:28px;background:#fff;box-shadow:var(--shadow-sm);display:grid;grid-template-columns:220px 1fr;gap:28px}

.saiwei-page .quick-card p {margin:0;color:#555555;font-size:1.04rem;line-height:1.72}

.saiwei-page .compare {padding:98px 0;background:var(--cream-2)}

.saiwei-page table {width:100%;border-collapse:collapse}

.saiwei-page th,.saiwei-page td {padding:15px 17px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}

.saiwei-page th {background:var(--silver-50);color:var(--blue-900);font-size:.63rem;font-weight:900;letter-spacing:.08em;text-transform:uppercase}

.saiwei-page td {color:#555555;font-size:.85rem}

.saiwei-page tbody tr:last-child td {border-bottom:0}

.saiwei-page td strong {color:var(--blue-950)}

.saiwei-page .evidence-state {display:inline-flex;padding:6px 9px;border-radius:999px;background:var(--cream-2);color:var(--silver-700);font-size:.58rem;font-weight:900;letter-spacing:.05em;text-transform:uppercase}

.saiwei-page .evidence-state.confirmed {background:var(--blue-100);color:#2563EB}

.saiwei-page .dimension-tables {display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:22px}

.saiwei-page .dimension-card {border:1px solid var(--line);border-radius:24px;background:#fff;overflow:hidden;box-shadow:var(--shadow-sm)}

.saiwei-page .dimension-card h3 {margin:0;padding:18px 20px;border-bottom:1px solid var(--line);color:var(--blue-950);font-size:1.05rem;background:linear-gradient(145deg,#fff,var(--blue-100))}

.saiwei-page .dimension-note {margin-top:18px;padding:17px;border-radius:17px;background:#fff;border:1px solid var(--line);color:#555555;font-size:.82rem}

.saiwei-page .why {padding:98px 0;background:var(--cream)}

.saiwei-page .why-grid {display:grid;grid-template-columns:.8fr 1.2fr;gap:46px;align-items:start}

.saiwei-page .why-list {display:grid;grid-template-columns:1fr 1fr;gap:12px}

.saiwei-page .why-card {padding:20px;border:1px solid var(--line);border-radius:20px;background:#fff;box-shadow:var(--shadow-sm)}

.saiwei-page .why-card h3 {margin:0;color:var(--blue-950);font-size:.96rem}

.saiwei-page .why-card p {margin:8px 0 0;color:var(--muted);font-size:.85rem}

.saiwei-page .do-not {margin-top:20px;padding:20px;border-radius:20px;background:var(--blue-900);color:rgba(255,255,255,.82);font-size:.82rem}

.saiwei-page .do-not strong {color:var(--blue-300)}

.saiwei-page .pro-note {margin-top:20px;padding:20px;border-radius:20px;background:var(--cream-2);border:1px solid var(--line);color:#555555;font-size:.82rem}

.saiwei-page .coverage {padding:98px 0;background:var(--silver-50)}

.saiwei-page .coverage-grid {display:grid;grid-template-columns:.85fr 1.15fr;gap:44px;align-items:start}

.saiwei-page .coverage-card {padding:28px;border:1px solid var(--line);border-radius:28px;background:#fff;box-shadow:var(--shadow-sm)}

.saiwei-page .coverage-card h3 {margin:0;color:var(--blue-950);font-size:1.28rem}

.saiwei-page .coverage-card p {margin:11px 0 0;color:var(--muted);font-size:.82rem}

.saiwei-page .method {counter-reset:method;display:grid;gap:10px;margin-top:18px}

.saiwei-page .method-step {counter-increment:method;position:relative;padding:13px 14px 13px 47px;border-radius:15px;background:var(--cream-2);color:#555555;font-size:.86rem}

.saiwei-page .method-step::before {content:counter(method);position:absolute;left:13px;top:11px;width:25px;height:25px;display:grid;place-items:center;border-radius:8px;background:var(--blue-100);color:#C7FF2E;font-size:.61rem;font-weight:950}

.saiwei-page .coverage-result {margin-top:18px;padding:16px;border-radius:16px;background:var(--blue-100);color:var(--blue-900);font-size:.82rem}

.saiwei-page .fit-points {display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:18px}

.saiwei-page .fit-points span {padding:12px 13px;border-radius:14px;background:#fff;border:1px solid var(--line);color:#555555;font-size:.8rem}

.saiwei-page .weight {padding:98px 0;background:var(--cream)}

.saiwei-page .weight-grid {display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:30px}

.saiwei-page .weight-card {padding:28px;border:1px solid var(--line);border-radius:28px;background:#fff;box-shadow:var(--shadow-sm)}

.saiwei-page .weight-card h3 {margin:0;color:var(--blue-950);font-size:1.25rem}

.saiwei-page .weight-card p {margin:11px 0 0;color:var(--muted);font-size:.82rem}

.saiwei-page .data-lines {display:grid;gap:9px;margin-top:18px}

.saiwei-page .data-line {display:flex;justify-content:space-between;gap:18px;padding:12px 13px;border-radius:14px;background:var(--silver-50);font-size:.8rem}

.saiwei-page .data-line span {color:#555555}

.saiwei-page .data-line strong {color:var(--blue-900)}

.saiwei-page .test-requirements {display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:22px}

.saiwei-page .test-requirements span {padding:12px;border-radius:14px;background:var(--cream-2);border:1px solid var(--line);color:#555555;font-size:.8rem;text-align:center}

.saiwei-page .safety {padding:100px 0;background:var(--blue-900);color:#fff}

.saiwei-page .safety .kicker {color:var(--blue-300)}

.saiwei-page .safety .section-copy {color:rgba(255,255,255,.72)}

.saiwei-page .safety-grid {display:grid;grid-template-columns:.8fr 1.2fr;gap:44px;align-items:start}

.saiwei-page .safety-panel {padding:30px;border-radius:30px;background:var(--cream);color:var(--ink);box-shadow:var(--shadow)}

.saiwei-page .safety-panel h3 {margin:0;color:var(--blue-950);font-size:1.35rem}

.saiwei-page .rule-list {display:grid;gap:10px;margin-top:18px}

.saiwei-page .rule-item {padding:13px 14px;border-radius:14px;background:var(--blue-100);color:#555555;font-size:.86rem}

.saiwei-page .rule-item strong {color:var(--blue-900)}

.saiwei-page .safety-boundary {margin-top:18px;padding:17px;border-radius:17px;background:var(--cream-2);color:#555555;font-size:.82rem}

.saiwei-page .disabled-link {display:inline-flex;margin-top:16px;padding:12px 16px;border-radius:999px;background:var(--silver-100);color:var(--silver-600);font-size:.8rem;font-weight:850;cursor:not-allowed}

.saiwei-page .regular {padding:98px 0;background:var(--cream-2)}

.saiwei-page .regular-grid {display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:30px}

.saiwei-page .regular-card {padding:28px;border:1px solid var(--line);border-radius:28px;background:#fff;box-shadow:var(--shadow-sm)}

.saiwei-page .regular-card h3 {margin:0;color:var(--blue-950);font-size:1.18rem}

.saiwei-page .regular-card p {margin:11px 0 0;color:var(--muted);font-size:.86rem}

.saiwei-page .regular-card ul {margin:14px 0 0;padding-left:18px;color:#555555;font-size:.86rem}

.saiwei-page .regular-card li+li {margin-top:5px}

.saiwei-page .youth-note {margin-top:18px;padding:18px;border-radius:18px;background:#fff;border:1px solid var(--line);color:#555555;font-size:.82rem}

.saiwei-page .decision-grid {display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:30px}

.saiwei-page .decision-card {padding:28px;border:1px solid var(--line);border-radius:28px;background:#fff;box-shadow:var(--shadow-sm)}

.saiwei-page .decision-card.mini {background:linear-gradient(145deg,#fff,var(--blue-100))}

.saiwei-page .decision-card h3 {margin:0;color:var(--blue-950);font-size:1.35rem}

.saiwei-page .decision-card ul {margin:16px 0 0;padding-left:18px;color:#555555;font-size:.85rem}

.saiwei-page .decision-card li+li {margin-top:6px}

.saiwei-page .unsure {margin-top:20px;padding:22px;border-radius:22px;background:var(--blue-900);color:rgba(255,255,255,.82)}

.saiwei-page .unsure strong {color:var(--blue-300)}

.saiwei-page .unsure ol {margin:12px 0 0;padding-left:20px}

.saiwei-page .homecompare {padding:98px 0;background:var(--silver-100)}

.saiwei-page .home-grid {display:grid;grid-template-columns:.82fr 1.18fr;gap:42px;align-items:start}

.saiwei-page .home-panel {padding:30px;border:1px solid var(--line);border-radius:30px;background:#fff;box-shadow:var(--shadow-sm)}

.saiwei-page .home-panel h3 {margin:0;color:var(--blue-950);font-size:1.3rem}

.saiwei-page .home-steps {display:grid;gap:10px;margin-top:18px}

.saiwei-page .home-step {display:grid;grid-template-columns:34px 1fr;gap:12px;align-items:start;padding:12px 0;border-bottom:1px solid var(--line-soft)}

.saiwei-page .home-step:last-child {border-bottom:0}

.saiwei-page .home-step span {display:grid;place-items:center;width:30px;height:30px;border-radius:10px;background:var(--blue-100);color:#0B0D10;font-size:.62rem;font-weight:950}

.saiwei-page .home-step p {margin:2px 0 0;color:#555555;font-size:.88rem}

.saiwei-page .visual-grid {display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:30px}

.saiwei-page .visual-card {border:1px solid var(--line);border-radius:22px;background:#fff;overflow:hidden;box-shadow:var(--shadow-sm)}

.saiwei-page .visual-placeholder {position:absolute;inset:0;display:grid;place-items:center;text-align:center;padding:14px;color:var(--silver-600);font-size:.7rem;font-weight:800}

.saiwei-page .faq-side {position:sticky;top:24px}

.saiwei-page .faq-list {display:grid;gap:12px}

.saiwei-page details {border:1px solid var(--line);border-radius:20px;background:#fff;box-shadow:0 8px 25px rgba(17,24,39,.04);overflow:hidden}

.saiwei-page summary {position:relative;list-style:none;cursor:pointer;padding:20px 54px 20px 20px;color:var(--blue-950);font-weight:850}

.saiwei-page summary::-webkit-details-marker {display:none}

.saiwei-page summary::after {content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);width:26px;height:26px;display:grid;place-items:center;border-radius:50%;background:var(--silver-100);color:#0B0D10;font-size:1.1rem}

.saiwei-page details[open] summary::after {content:"–"}

.saiwei-page .faq-answer {padding:0 20px 20px;color:#636363;font-size:.88rem}

.saiwei-page .final {padding:38px 0 90px;background:var(--cream)}

.saiwei-page .final-panel {position:relative;padding:54px;border-radius:32px;background:linear-gradient(140deg,#0B0D10,#272727);color:#fff;overflow:hidden;box-shadow:var(--shadow)}

.saiwei-page .final-panel::before {content:"";position:absolute;width:380px;height:380px;border-radius:50%;right:-125px;top:-165px;background:rgba(255,255,255,.07)}

.saiwei-page .final h2 {margin:0;max-width:760px;font-size:clamp(2.4rem,4.5vw,3.3rem);line-height:.96;letter-spacing:-.05em}

.saiwei-page .final p {margin:18px 0 0;max-width:760px;color:rgba(255,255,255,.72)}

.saiwei-page .final-actions {display:flex;flex-wrap:wrap;gap:10px;justify-content:flex-end}

.saiwei-page .page-note {padding:24px 0 54px;background:var(--cream);color:var(--muted);font-size:.75rem}

.saiwei-page .page-note-inner {width:var(--content);margin:auto;padding-top:20px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}

.saiwei-page .page-note strong {color:var(--blue-900)}

@media (max-width:1180px) { .saiwei-page .visual-grid {grid-template-columns:repeat(2,1fr)} }

@media (max-width:1180px) { .saiwei-page .test-requirements {grid-template-columns:repeat(2,1fr)} }

@media (max-width:1100px) { .saiwei-page .desktop-nav {display:none} }

@media (max-width:1100px) { .saiwei-page .menu-btn {display:grid;place-items:center} }

@media (max-width:1100px) { .saiwei-page .hero-grid,.saiwei-page .why-grid,.saiwei-page .coverage-grid,.saiwei-page .safety-grid,.saiwei-page .home-grid,.saiwei-page .faq-layout {grid-template-columns:1fr} }

@media (max-width:1100px) { .saiwei-page .faq-side {position:static} }

@media (max-width:1100px) { .saiwei-page .final-actions {justify-content:flex-start} }

@media (max-width:780px) { .saiwei-page {--content:min(calc(100% - 26px),1350px)} }

@media (max-width:780px) { .saiwei-page .header-inner {min-height:68px} }

@media (max-width:780px) { .saiwei-page .mobile-menu {top:68px} }

@media (max-width:780px) { .saiwei-page .hero {padding:26px 0 58px} }

@media (max-width:780px) { .saiwei-page .hero-copy {padding:36px 0 8px} }

@media (max-width:780px) { .saiwei-page .display {font-size:clamp(2.4rem,12vw,5rem)} }

@media (max-width:780px) { .saiwei-page .quick-card,.saiwei-page .dimension-tables,.saiwei-page .why-list,.saiwei-page .weight-grid,.saiwei-page .regular-grid,.saiwei-page .decision-grid,.saiwei-page .visual-grid {grid-template-columns:1fr} }

@media (max-width:780px) { .saiwei-page .quick-card {padding:25px} }

@media (max-width:780px) { .saiwei-page .fit-points,.saiwei-page .group-columns {grid-template-columns:1fr} }

@media (max-width:780px) { .saiwei-page .final-panel {padding:34px 24px} }

@media (max-width:520px) { .saiwei-page .hero-actions,.saiwei-page .final-actions {display:grid} }

@media (max-width:520px) { .saiwei-page .btn {width:100%} }

@media (prefers-reduced-motion:reduce) { .saiwei-page * {scroll-behavior:auto!important;transition:none!important} }

.saiwei-page section:not(.quick) {padding:75px 0!important}

@media (max-width:780px) { .saiwei-page section {padding:55px 0!important} }