:root{color-scheme:light;--paper:#f5f5f5;--surface:#ffffff;--ink:#0a0a0a;--ink-2:#555555;--ink-3:#8c8c8c;--rule:#e2e2e2;--rule-strong:#c4c4c4;--focus:#0a0a0a;--in:#2a78d6;--out:#d95926;--grade-a:#1e7b4f;--grade-b:#8c6d11;--grade-c:#b5551b;--grade-d:#b42b2b;--grade-f:#7a1f3d;--sev-critical:#7a1f3d;--sev-high:#b42b2b;--sev-medium:#b5551b;--sev-low:#8c6d11;--sev-info:#555555;--sans:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",sans-serif;--mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;--measure:66ch}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){color-scheme:dark;--paper:#0a0a0a;--surface:#141414;--ink:#f2f2f2;--ink-2:#a8a8a8;--ink-3:#6e6e6e;--rule:#262626;--rule-strong:#3a3a3a;--in:#3987e5;--out:#d95926;--grade-a:#4bc27b;--grade-b:#d9b23a;--grade-c:#e8894c;--grade-d:#e86565;--grade-f:#d9668c;--sev-critical:#d9668c;--sev-high:#e86565;--sev-medium:#e8894c;--sev-low:#d9b23a;--sev-info:#a8a8a8}}:root[data-theme=dark]{color-scheme:dark;--paper:#0a0a0a;--surface:#141414;--ink:#f2f2f2;--ink-2:#a8a8a8;--ink-3:#6e6e6e;--rule:#262626;--rule-strong:#3a3a3a;--in:#3987e5;--out:#d95926;--grade-a:#4bc27b;--grade-b:#d9b23a;--grade-c:#e8894c;--grade-d:#e86565;--grade-f:#d9668c;--sev-critical:#d9668c;--sev-high:#e86565;--sev-medium:#e8894c;--sev-low:#d9b23a;--sev-info:#a8a8a8}*,:after,:before{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.5;font-feature-settings:"tnum" 1,"ss01" 1}a{color:inherit;text-decoration-thickness:1px;text-underline-offset:3px}button,input,select{font:inherit;color:inherit}:focus-visible{outline:2px solid var(--focus);outline-offset:2px}@media (prefers-reduced-motion:reduce){*,:after,:before{animation:none!important;transition:none!important}}.wrap{max-width:940px;margin:0 auto;padding:0 16px 96px}.masthead{display:flex;align-items:baseline;justify-content:space-between;gap:16px;padding:28px 0 20px;border-bottom:1px solid var(--rule)}.masthead .brand{font-size:17px}.masthead .brand span{color:var(--ink-3);font-weight:400;margin-left:10px}.masthead nav{font-size:14px;color:var(--ink-2);display:flex;gap:18px}.hero{padding:48px 0 28px}.hero h1{font-size:clamp(30px,4.6vw,46px);line-height:1.08;letter-spacing:-.02em;margin:0 0 14px;max-width:18ch}.hero p{color:var(--ink-2);font-size:17px;margin:0;max-width:56ch}.panel{background:var(--surface);border:1px solid var(--rule);border-radius:6px;padding:20px;margin-top:28px}.grid{display:grid;grid-template-columns:1fr 1fr;grid-gap:14px 18px;gap:14px 18px}.grid .span2{grid-column:1/-1}@media (max-width:640px){.grid{grid-template-columns:1fr}}label.field{display:block}label.field>span{display:block;font-size:13px;color:var(--ink-2);margin-bottom:6px}label.field>span em{font-style:normal;color:var(--ink-3)}.input{width:100%;padding:10px 12px;background:var(--paper);border:1px solid var(--rule-strong);border-radius:4px;font-family:var(--mono);font-size:14px}.input::placeholder{color:var(--ink-3);font-family:var(--mono)}select.input{font-family:var(--sans)}.actions{display:flex;align-items:center;gap:14px;margin-top:18px;flex-wrap:wrap}.btn{padding:10px 18px;border-radius:4px;border:1px solid var(--ink);font-weight:500;cursor:pointer}.btn:disabled{opacity:.55;cursor:progress}.hint{font-size:13px;color:var(--ink-3)}.error{color:var(--sev-high);font-size:14px}.report{margin-top:40px}.section{padding:28px 0;border-top:1px solid var(--rule)}.section h2{font-size:15px;font-weight:600;margin:0 0 16px;letter-spacing:0}.section h2 small{font-weight:400;color:var(--ink-3);margin-left:8px}.section p{max-width:var(--measure)}.verdict{display:grid;grid-template-columns:180px 1fr;grid-gap:28px;gap:28px;align-items:start;padding:28px 0 8px}@media (max-width:640px){.verdict{grid-template-columns:1fr}}.stamp{--c:var(--grade-c);border:2.5px solid var(--c);color:var(--c);border-radius:6px;padding:14px 16px 12px;width:180px;transform:rotate(-2deg);font-family:var(--mono)}.stamp .grade{font-size:64px;line-height:1;font-weight:500}.stamp .score{font-size:14px;margin-top:6px}.stamp .label{font-family:var(--sans);font-size:13px;font-weight:600;margin-top:2px}.verdict .text p:first-child{font-size:19px;line-height:1.4;margin:0 0 12px}.verdict .conf{font-size:14px;color:var(--ink-2)}.verdict .conf b{color:var(--ink);font-weight:600}.stage{align-items:center;gap:8px;font-weight:500}.stage:before{content:"";width:10px;height:10px;border-radius:50%;background:var(--c,var(--ink-3))}.signals{list-style:none;margin:0;padding:0}.signals li{display:grid;grid-template-columns:84px 1fr;grid-gap:14px;gap:14px;padding:12px 0;border-top:1px dashed var(--rule)}.signals li:first-child{border-top:0}.sev{font-size:12px;font-weight:600;color:var(--sev-info);padding-top:3px}.sev.critical{color:var(--sev-critical)}.sev.high{color:var(--sev-high)}.sev.medium{color:var(--sev-medium)}.sev.low{color:var(--sev-low)}.signals .t{font-weight:500}.signals .e{color:var(--ink-2);font-size:14px;margin-top:2px;max-width:var(--measure)}.signals .s{color:var(--ink-3);font-size:12px;margin-left:8px}.perm{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));grid-gap:8px 20px;gap:8px 20px}.perm div{display:flex;align-items:baseline;gap:10px;padding:7px 0;border-bottom:1px dotted var(--rule);font-size:14px}.perm .k{width:18px;font-family:var(--mono);flex:none}.perm .yes .k{color:var(--sev-high)}.perm .yes.critical .k{color:var(--sev-critical)}.perm .yes.medium .k{color:var(--sev-medium)}.perm .yes.info .k,.perm .yes.low .k{color:var(--ink-2)}.perm .no,.perm .unknown{color:var(--ink-3)}.perm .unknown{font-style:italic}.facts{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));grid-gap:14px 24px;gap:14px 24px}.fact .v{font-size:20px;font-weight:500;letter-spacing:-.01em}.fact .v.mono{font-family:var(--mono);font-size:14px;font-weight:400;word-break:break-all}.fact .k{font-size:13px;color:var(--ink-2)}.addr{font-family:var(--mono);font-size:13px;word-break:break-all}.muted{color:var(--ink-2)}.tiny{font-size:13px;color:var(--ink-3)}.chart{margin-top:8px}.chart svg{width:100%;height:auto;display:block}.chart .legend{display:flex;gap:18px;font-size:13px;color:var(--ink-2);margin:8px 0 0}.chart .legend span:before{content:"";display:inline-block;width:10px;height:10px;border-radius:2px;margin-right:7px;vertical-align:-1px;background:var(--c)}.tooltip{position:absolute;pointer-events:none;background:var(--ink);color:var(--paper);font-size:12px;padding:6px 9px;border-radius:4px;white-space:nowrap;transform:translate(-50%,calc(-100% - 10px))}.tooltip b{font-weight:500}.tooltip b,table.flows{font-family:var(--mono)}table.flows{width:100%;border-collapse:collapse;font-size:13px;margin-top:12px}table.flows td,table.flows th{text-align:right;padding:5px 8px;border-bottom:1px solid var(--rule)}table.flows td:first-child,table.flows th:first-child{text-align:left}table.flows th{font-family:var(--sans);font-weight:500;color:var(--ink-2)}details summary{cursor:pointer;font-size:14px;color:var(--ink-2)}.warnings{font-size:13px;padding-left:18px;margin:0}.quote,.warnings{color:var(--ink-2)}.quote{border-left:2px solid var(--rule-strong);padding-left:12px;font-size:14px;margin:6px 0 0}.disclaimer{margin-top:40px;padding-top:16px;border-top:1px solid var(--rule);font-size:13px;color:var(--ink-3);max-width:70ch}.skeleton{color:var(--ink-3);padding:48px 0;font-size:15px}.skeleton ol{padding-left:20px;margin:10px 0 0}.skeleton li{padding:3px 0}html{scroll-behavior:smooth;scroll-padding-top:24px}.wrap{max-width:1040px}.masthead{z-index:10;background:var(--paper)}.nav-links{display:flex;gap:18px;font-size:14px;color:var(--ink-2)}.nav-links a:hover{color:var(--ink)}.nav-cta{display:flex;align-items:center}.btn.sm{padding:7px 13px;font-size:14px}.btn.sm,a.btn{text-decoration:none;display:inline-block}@media (max-width:760px){.masthead .nav-links{display:none}}.hero .eyebrow{font-size:13px;color:var(--ink-3);letter-spacing:.06em;margin:0 0 14px;font-weight:500}.trust{margin:28px 0 0;padding:18px 0 0;border-top:1px solid var(--rule);grid-template-columns:repeat(4,1fr);grid-gap:12px 24px;gap:12px 24px;font-size:14px;color:var(--ink-2)}.trust b{font-size:20px;color:var(--ink);margin-bottom:2px}@media (max-width:760px){.trust{grid-template-columns:1fr 1fr}}.land{padding:72px 0 0}.land-head{max-width:64ch;margin-bottom:32px}.land-head h2{font-size:clamp(24px,3vw,32px);line-height:1.15;letter-spacing:-.015em;margin:0 0 12px}.land-head p{font-size:16px;margin:0}.land h3{font-size:17px;font-weight:600;margin:0 0 8px;letter-spacing:-.005em}.land .src{font-size:12px;color:var(--ink-3);font-family:var(--mono);margin-top:auto;padding-top:12px}.cols3{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:18px;gap:18px}@media (max-width:760px){.cols3{grid-template-columns:1fr}}.card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--rule);border-radius:6px;padding:18px}.card-visual svg{width:100%;height:auto;display:block;margin-bottom:16px}.card .num{font-family:var(--mono);font-size:12px;color:var(--ink-3);margin-bottom:6px}.card p{color:var(--ink-2);font-size:14.5px;margin:0}.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);grid-gap:0 24px;gap:0 24px;border-top:1px solid var(--rule)}.steps li{padding:20px 0 0;position:relative}.steps .step-n{font-size:13px;color:var(--ink-3)}.steps p{color:var(--ink-2);font-size:14.5px;margin:0 0 10px}.steps .meta{font-family:var(--mono);font-size:12px;color:var(--ink-3)}@media (max-width:760px){.steps{grid-template-columns:1fr 1fr;gap:18px 24px}}@media (max-width:480px){.steps{grid-template-columns:1fr}}.catalog{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));grid-gap:18px;gap:18px}.cat{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--rule);border-radius:6px;padding:18px}.cat header p{color:var(--ink-2);font-size:14px;margin:0 0 10px}.cat .signals li{grid-template-columns:64px 1fr;padding:8px 0;font-size:14px}.cat .signals .t{font-weight:400}.cases{display:grid;grid-template-columns:repeat(2,1fr);grid-gap:0 32px;gap:0 32px;border-top:1px solid var(--rule)}.cases article{padding:24px 0;border-bottom:1px solid var(--rule)}.cases .need{font-size:12px;color:var(--ink-3);text-transform:uppercase;letter-spacing:.06em;margin-bottom:8px;font-weight:500}.cases p{color:var(--ink-2);font-size:14.5px;margin:0;max-width:48ch}@media (max-width:760px){.cases{grid-template-columns:1fr}}.tiers{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:18px;gap:18px;align-items:stretch}.tier{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--rule);border-radius:6px;padding:22px 20px}.tier.featured{border-color:var(--ink)}.tier .price{font-size:32px;font-weight:500;letter-spacing:-.02em;line-height:1;margin:6px 0 10px}.tier .price small{font-size:13px;font-weight:400;color:var(--ink-3);margin-left:8px;letter-spacing:0}.tier .pitch{color:var(--ink-2);font-size:14.5px;margin:0 0 16px}.tier ul{list-style:none;margin:0 0 22px;padding:0;font-size:14px;flex:1 1}.tier li{padding:7px 0 7px 18px;border-top:1px dashed var(--rule);position:relative}.tier li:before{content:"·";position:absolute;left:4px;color:var(--ink-3)}@media (max-width:760px){.tiers{grid-template-columns:1fr}}.api{background:var(--surface);border:1px solid var(--rule);border-radius:6px;padding:32px;margin-top:72px}.api-grid{display:grid;grid-template-columns:1.1fr 1fr;grid-gap:32px;gap:32px;align-items:start}.api h2{font-size:clamp(22px,2.6vw,28px);letter-spacing:-.015em;margin:0 0 12px;line-height:1.15}.api p{color:var(--ink-2);font-size:15px;margin:0 0 14px}.api .checks{list-style:none;margin:0 0 8px;padding:0;font-size:14px;color:var(--ink-2)}.api .checks li{padding:5px 0 5px 18px;position:relative}.api .checks li:before{content:"✓";position:absolute;left:0;color:var(--grade-a);font-family:var(--mono)}.api .actions{margin-top:14px}.code{margin:0;background:var(--paper);border:1px solid var(--rule);border-radius:4px;padding:16px;font-family:var(--mono);font-size:12.5px;line-height:1.55;color:var(--ink);overflow-x:auto}@media (max-width:760px){.api{padding:20px}.api-grid{grid-template-columns:1fr}}.faq{max-width:72ch}.faq details{border-bottom:1px solid var(--rule)}.faq summary{padding:16px 0;font-size:16px;font-weight:500;color:var(--ink);list-style:none;display:flex;justify-content:space-between;gap:16px}.faq summary::-webkit-details-marker{display:none}.faq summary:after{content:"+";font-family:var(--mono);color:var(--ink-3);flex:none}.faq details[open] summary:after{content:"−"}.faq details p{color:var(--ink-2);font-size:15px;margin:0 0 18px;max-width:64ch}.footer{margin-top:96px;padding-top:32px;border-top:1px solid var(--rule)}.footer-grid{display:grid;grid-template-columns:1.6fr repeat(4,1fr);grid-gap:24px;gap:24px}.footer-brand p{color:var(--ink-2);font-size:14px;margin:10px 0 0;max-width:30ch}.footer h4{font-size:13px;font-weight:600;margin:0 0 10px}.footer ul{list-style:none;margin:0;padding:0;font-size:14px;color:var(--ink-2)}.footer li{padding:3px 0}.footer li a{text-decoration:none}.footer li a:hover{color:var(--ink);text-decoration:underline}.footer .soon{color:var(--ink-3);cursor:not-allowed}.footer .soon:after{content:"soon";font-size:10px;font-family:var(--mono);margin-left:6px;padding:1px 4px;border:1px solid var(--rule);border-radius:3px;vertical-align:1px}.footer .disclaimer{margin-top:32px}.footer-meta{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:24px;font-size:12px;color:var(--ink-3)}@media (max-width:760px){.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}}.showcase{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:18px;gap:18px}@media (max-width:900px){.showcase{grid-template-columns:1fr}}.sc-card{display:flex;flex-direction:column;gap:14px;background:var(--surface);border:1px solid var(--rule);border-radius:6px;padding:18px}.sc-card.pending{opacity:.6;border-style:dashed}.sc-head{display:grid;grid-template-columns:84px 1fr;grid-gap:14px;gap:14px;align-items:start}.sc-head h3{margin:0 0 4px}.sc-meta{color:var(--ink-3);word-break:break-all}.sc-meta,.sc-meta .addr{font-size:12px}.sc-head .stage{font-size:13px;margin:8px 0 0}.stamp.sm{padding:8px 10px 6px;border-width:2px}.stamp.sm .grade{font-size:36px}.stamp.sm .score{font-size:11px;margin-top:4px}.sc-promise{margin:0;color:var(--ink-2)}.sc-promise b{color:var(--ink);font-weight:600}.sc-chart{position:relative;padding-top:10px}.sc-card .signals li{grid-template-columns:64px 1fr;padding:8px 0;font-size:14px}.sc-card .signals .t{font-weight:400}.sc-foot{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:auto;padding-top:10px;border-top:1px solid var(--rule);flex-wrap:wrap}.sc-card code,.skeleton code{font-family:var(--mono);font-size:12px;background:var(--paper);border:1px solid var(--rule);border-radius:3px;padding:1px 5px}.hero.compact{padding:36px 0 20px}.hero.compact h1{font-size:clamp(26px,3.6vw,36px)}.lang{display:flex;gap:2px;border:1px solid var(--rule-strong);border-radius:4px;padding:2px;font-size:13px}.lang a{padding:3px 8px;border-radius:3px;text-decoration:none;color:var(--ink-2)}.lang a[aria-current=page]{background:var(--ink);color:var(--paper)}:lang(zh-CN) body,html[lang=zh-CN] body{font-family:var(--sans),"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif}html[lang=zh-CN] .hero h1{max-width:22ch}:root{--navy:#0a0a0a;--navy-2:#141414;--navy-3:#1c1c1c;--navy-rule:#262626;--navy-rule-strong:#3a3a3a;--navy-ink:#f2f2f2;--navy-ink-2:#a8a8a8;--navy-ink-3:#6e6e6e;--phos:#f2f2f2;--phos-2:#d0d0d0;--phos-ink:#0a0a0a;--accent:var(--ink);--display:"Fraunces","Iowan Old Style","Palatino Linotype",Georgia,serif;--radius:12px;--shadow-1:0 1px 2px rgba(10,15,31,0.06),0 10px 30px -14px rgba(10,15,31,0.25);--shadow-2:0 2px 6px rgba(10,15,31,0.08),0 24px 56px -20px rgba(10,15,31,0.4);--ease:cubic-bezier(0.22,1,0.36,1);--focus:var(--ink)}html[lang=zh-CN]{--display:"Fraunces","Songti SC","Noto Serif SC","PingFang SC",serif}.dark{--paper:var(--navy);--surface:var(--navy-2);--ink:var(--navy-ink);--ink-2:var(--navy-ink-2);--ink-3:var(--navy-ink-3);--rule:var(--navy-rule);--rule-strong:var(--navy-rule-strong);--sev-critical:#d9668c;--sev-high:#e86565;--sev-medium:#e8894c;--sev-low:#d9b23a;--sev-info:#a8a8a8;--grade-a:#4bc27b;--grade-b:#d9b23a;--grade-c:#e8894c;--grade-d:#e86565;--grade-f:#d9668c;--in:#3987e5;--out:#d95926;background:var(--paper);color:var(--ink);color-scheme:dark}.band,.footer,.hero,.masthead{margin-inline:calc(50% - 50vw);padding-inline:calc(50vw - 50%)}body,html{overflow-x:clip}html{scroll-padding-top:84px}.wrap{max-width:1120px;padding-bottom:0}::selection{background:color-mix(in srgb,var(--accent) 30%,transparent)}@keyframes rise{0%{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}@keyframes fade{0%{opacity:0}to{opacity:1}}@keyframes grow{0%{transform:scaleY(0)}to{transform:scaleY(1)}}@keyframes pulse{0%,to{box-shadow:0 0 0 0 color-mix(in srgb,var(--c,var(--ink-3)) 55%,transparent)}70%{box-shadow:0 0 0 7px transparent}}.rise{animation:rise .9s var(--ease) both;animation-delay:var(--d,0s)}.reveal{opacity:0;transform:translateY(16px);transition:opacity .7s var(--ease),transform .8s var(--ease)}.reveal.in{opacity:1;transform:none}.reveal.stagger>*{opacity:0;transform:translateY(14px);transition:opacity .6s var(--ease),transform .7s var(--ease)}.reveal.stagger.in>*{opacity:1;transform:none}.reveal.stagger.in>:first-child{transition-delay:.05s}.reveal.stagger.in>:nth-child(2){transition-delay:.14s}.reveal.stagger.in>:nth-child(3){transition-delay:.23s}.reveal.stagger.in>:nth-child(4){transition-delay:.32s}.reveal.stagger.in>:nth-child(5){transition-delay:.41s}.reveal.stagger.in>:nth-child(n+6){transition-delay:.5s}@media (prefers-reduced-motion:reduce){.reveal,.reveal.stagger>*{opacity:1;transform:none}}.masthead{position:-webkit-sticky;position:sticky;top:0;z-index:20;flex-wrap:wrap;align-items:center;padding-top:16px;padding-bottom:14px;border-bottom:1px solid color-mix(in srgb,var(--navy-rule) 70%,transparent);background:color-mix(in srgb,var(--navy) 82%,transparent);-webkit-backdrop-filter:blur(16px) saturate(1.3);backdrop-filter:blur(16px) saturate(1.3);transition:padding .3s var(--ease)}.masthead.scrolled{padding-top:10px;padding-bottom:9px}.masthead .brand{font-family:var(--display);font-weight:600;font-size:20px;letter-spacing:-.01em;text-decoration:none;display:inline-flex;align-items:center;gap:10px}.masthead .brand:before{content:"";width:10px;height:10px;border-radius:50%;background:var(--navy-ink)}.masthead .brand span{font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;margin:0;padding:2px 6px;border:1px solid var(--navy-rule-strong);border-radius:4px;color:var(--navy-ink-3)}.nav-links{gap:22px}.nav-links a{padding:6px 0;position:relative;color:var(--navy-ink-2);text-decoration:none}.nav-links a:after{content:"";position:absolute;left:0;right:0;bottom:0;height:1.5px;background:var(--phos);transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease)}.nav-links a:hover{color:var(--navy-ink)}.nav-links a:hover:after{transform:scaleX(1)}.lang{border-color:var(--navy-rule-strong)}.lang a{color:var(--navy-ink-2);min-height:30px;display:inline-flex;align-items:center}.lang a[aria-current=page]{background:var(--navy-ink);color:var(--navy)}.menu-btn{display:none;width:44px;height:44px;border:1px solid var(--navy-rule-strong);background:transparent;cursor:pointer;padding:0;position:relative}.menu-btn span{position:absolute;left:12px;right:12px;height:1.6px;background:var(--navy-ink);border-radius:2px;transition:transform .3s var(--ease),opacity .2s}.menu-btn span:first-child{top:14px}.menu-btn span:nth-child(2){top:21px}.menu-btn span:nth-child(3){top:28px}.masthead.open .menu-btn span:first-child{transform:translateY(7px) rotate(45deg)}.masthead.open .menu-btn span:nth-child(2){opacity:0}.masthead.open .menu-btn span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}.mobile-menu{display:none}@media (max-width:960px){.masthead .nav-links,.masthead .nav-signin{display:none}.menu-btn{display:block}.mobile-menu{display:flex;flex-direction:column;position:absolute;left:0;right:0;top:100%;padding:8px 16px 18px;background:#000;border-bottom:1px solid #1f1f1f;box-shadow:var(--shadow-2);animation:fade .2s var(--ease);z-index:25}.mobile-menu[hidden]{display:none}.mobile-menu a:not(.btn){padding:13px 4px;font-size:17px;text-decoration:none;border-top:1px solid var(--navy-rule)}.mobile-menu-foot{display:flex;gap:10px;padding-top:14px}.mobile-menu-foot .btn{flex:1 1}}@media (max-width:760px){.masthead .brand span,.masthead .nav-check{display:none}.masthead .brand{white-space:nowrap;flex-shrink:0}}.btn,a.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:11px 20px;border-radius:10px;font-weight:600;letter-spacing:.005em;transition:transform .2s var(--ease),box-shadow .25s var(--ease),filter .2s}.btn{background:var(--ink);border-color:var(--ink);color:var(--paper);box-shadow:none}.btn:not(:disabled):hover{transform:translateY(-1px);box-shadow:var(--shadow-1)}.btn:not(:disabled):active{transform:none}.btn.ghost{background:transparent;color:var(--ink);border-color:var(--rule-strong);box-shadow:none}.btn.ghost:not(:disabled):hover{border-color:var(--ink);box-shadow:none}.btn.sm,a.btn.sm{min-height:36px;padding:6px 14px;font-size:14px}.btn.cta:after{content:"→";font-family:var(--mono);font-weight:400;transition:transform .25s var(--ease)}.btn.cta:hover:after{transform:translateX(3px)}.btn:disabled{cursor:not-allowed;opacity:.5}.hero{position:relative;isolation:isolate;padding-top:72px;padding-bottom:0;overflow:hidden}.hero:before{content:"";position:absolute;inset:0;z-index:-2;pointer-events:none;background-image:linear-gradient(color-mix(in srgb,var(--navy-rule) 80%,transparent) 1px,transparent 1px),linear-gradient(90deg,color-mix(in srgb,var(--navy-rule) 80%,transparent) 1px,transparent 1px);background-size:48px 48px,48px 48px;-webkit-mask-image:linear-gradient(180deg,#000 60%,transparent);mask-image:linear-gradient(180deg,#000 60%,transparent)}.hero-grid{display:block;padding-bottom:72px}.hero .eyebrow{font-family:var(--mono);font-size:12.5px;color:var(--phos);text-transform:uppercase;letter-spacing:.12em;margin:0 0 20px;display:flex;align-items:center;gap:10px}.hero .eyebrow:before{content:"";width:28px;height:1px;background:var(--navy-ink-3)}.hero h1{font-family:var(--display);font-weight:500;font-size:clamp(44px,6.4vw,84px);line-height:1;letter-spacing:-.03em;max-width:14ch;margin:0 0 22px;font-variation-settings:"opsz" 144;color:var(--navy-ink)}html[lang=zh-CN] .hero h1{font-size:clamp(40px,6vw,76px);line-height:1.12;letter-spacing:0;max-width:15ch}.hero .lede{font-size:19px;color:var(--navy-ink-2);max-width:50ch;margin:0;line-height:1.6}.hero .actions{margin-top:28px;gap:12px}.hero .btn.ghost{color:var(--navy-ink);border-color:var(--navy-rule-strong)}.hero .btn.ghost:hover{border-color:var(--navy-ink)}.trust{list-style:none;margin:40px 0 0;padding:0;border:0;display:grid;grid-template-columns:repeat(4,auto);justify-content:start;grid-gap:0;gap:0}.trust li{padding:4px 22px 4px 0;margin-right:22px;border-right:1px solid var(--navy-rule);font-size:13px;color:var(--navy-ink-3);line-height:1.35;max-width:17ch}.trust li:last-child{border-right:0}.trust b{display:block;font-family:var(--display);font-size:30px;font-weight:500;color:var(--navy-ink);letter-spacing:-.01em;margin-bottom:4px}@media (max-width:900px){.trust{grid-template-columns:1fr 1fr;gap:14px 0}.trust li:nth-child(2){border-right:0}}@media (max-width:480px){.hero{padding-top:36px}.hero h1{font-size:36px}html[lang=zh-CN] .hero h1{font-size:32px}.hero .lede{font-size:16px}.hero .actions .btn{flex:1 1}.hero-grid{padding-bottom:36px}.trust b{font-size:24px}}.land{padding-top:96px}.land-head{position:relative;max-width:68ch;margin-bottom:40px}.sec-n{font-family:var(--mono);font-size:12px;color:var(--accent);letter-spacing:.14em;margin-bottom:16px;display:flex;align-items:center;gap:10px}.sec-n:before{content:"";width:28px;height:2px;background:var(--accent);border-radius:2px}.land-head h2{font-family:var(--display);font-size:clamp(30px,3.8vw,44px);font-weight:500;letter-spacing:-.02em;line-height:1.06;margin:0 0 14px}html[lang=zh-CN] .land-head h2{letter-spacing:0;line-height:1.2}.land-head p{font-size:17px;color:var(--ink-2)}.band{padding-top:88px;padding-bottom:96px;margin-top:96px;border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);background:var(--surface)}.band.dark{border-color:var(--navy-rule);position:relative;isolation:isolate}.band.dark:before{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;background-image:linear-gradient(color-mix(in srgb,var(--navy-rule) 45%,transparent) 1px,transparent 1px),linear-gradient(90deg,color-mix(in srgb,var(--navy-rule) 45%,transparent) 1px,transparent 1px);background-size:48px 48px;-webkit-mask-image:radial-gradient(ellipse at 50% 0,#000,transparent 75%);mask-image:radial-gradient(ellipse at 50% 0,#000,transparent 75%)}.band+.land{padding-top:80px}.land h3{font-size:18px}.card,.cat,.sc-card,.tier{border-radius:var(--radius);box-shadow:var(--shadow-1);transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s}.card:hover,.cat:hover,.sc-card:hover,.tier:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--rule-strong)}.cols3{gap:22px}.cols3 .card{--tint:var(--ink);padding:0;overflow:hidden}.cols3 .card .card-visual{background:var(--paper);padding:22px 22px 6px;border-bottom:1px solid var(--rule)}.cols3 .card .card-visual svg{border:1px solid var(--rule);border-radius:8px;box-shadow:var(--shadow-1);margin-bottom:14px}.cols3 .card .num,.cols3 .card .src,.cols3 .card h3,.cols3 .card p{margin-left:22px;margin-right:22px}.cols3 .card .num{color:var(--tint);font-weight:600;margin-top:18px;letter-spacing:.1em}.cols3 .card .src{padding-bottom:20px}.steps{border-top:0;gap:0 28px;position:relative}.steps li{padding:26px 0 0}.steps li:before{content:"";display:block;height:1px;background:var(--navy-rule-strong);margin-bottom:22px}.steps li:after{content:"";position:absolute;top:21px;left:0;width:11px;height:11px;border-radius:50%;background:var(--navy-ink)}.steps .step-n{font-family:var(--mono);font-size:12px;color:var(--phos);letter-spacing:.12em;margin-bottom:10px}.steps .step-n:before{content:"STEP "}.steps p{color:var(--navy-ink-2)}.steps .meta{color:var(--navy-ink-3)}@media (max-width:760px){.steps{gap:22px 28px}}.catalog{gap:20px}.cat{border-left:3px solid var(--ink);padding:20px}.cases article{position:relative;padding-left:20px}.cases article:before{content:"";position:absolute;left:0;top:30px;bottom:30px;width:3px;border-radius:2px;background:linear-gradient(180deg,var(--accent),transparent)}.cases .need{color:var(--accent)}.tiers{gap:22px}.tier{padding:26px 24px}.tier .price{font-family:var(--display);font-size:42px}.tier.featured{--paper:var(--navy);--surface:var(--navy-2);--ink:var(--navy-ink);--ink-2:var(--navy-ink-2);--ink-3:var(--navy-ink-3);--rule:var(--navy-rule);--rule-strong:var(--navy-rule-strong);background:var(--navy);color:var(--ink);border-color:var(--navy);box-shadow:var(--shadow-2);transform:translateY(-6px)}.tier.featured:hover{transform:translateY(-9px)}.tier.featured .price{color:var(--navy-ink)}.tier.featured .pitch,.tier.featured ul{color:var(--ink-2)}.tier .btn{text-align:center}.api{padding:48px;margin-top:96px;border-radius:0;border:0;border-top:1px solid var(--navy-rule);border-bottom:1px solid var(--navy-rule);position:relative;isolation:isolate;overflow:hidden}.api h2{font-family:var(--display);font-weight:500;font-size:clamp(28px,3.2vw,38px);color:var(--navy-ink)}.api .checks,.api p{color:var(--navy-ink-2)}.api .btn.ghost,.api .checks li:before{color:var(--navy-ink)}.api .btn.ghost{border-color:var(--navy-rule-strong)}.code{background:color-mix(in srgb,var(--navy) 80%,transparent);border:1px solid var(--navy-rule-strong);border-radius:12px;padding:20px 22px;color:var(--navy-ink-2);font-size:13px;box-shadow:var(--shadow-2);position:relative}.code code{display:block}.tk-key{color:var(--navy-ink)}.tk-str{color:var(--navy-ink-2)}.tk-num{color:var(--navy-ink);font-weight:500}@media (max-width:760px){.api{padding:28px 18px}}.faq{border-top:1px solid var(--rule)}.faq summary{padding:18px 0;font-size:17px;transition:color .2s}.faq summary:after,.faq summary:hover{color:var(--accent)}.faq summary:after{transition:transform .3s var(--ease)}.faq details[open] summary:after{content:"+";transform:rotate(45deg)}.faq details p{animation:fade .35s var(--ease)}.showcase{gap:22px}.sc-card{padding:22px;gap:16px;position:relative;overflow:visible}.sc-head{display:block;padding-right:96px}.sc-head h3{font-size:19px;margin:0 0 6px}.sc-head .stamp{position:absolute;top:-12px;right:14px;transform:rotate(7deg)}.stamp{border-radius:8px;box-shadow:inset 0 0 0 1.5px var(--surface),inset 0 0 0 2.5px var(--c)}.stamp.sm{width:84px;border-width:2.5px}.stage{padding:4px 10px 4px 8px;border-radius:999px;background:color-mix(in srgb,var(--c,var(--ink-3)) 12%,transparent);color:color-mix(in srgb,var(--c,var(--ink-3)) 85%,var(--ink));font-size:13px;display:inline-flex;margin-top:10px}.stage:before{width:8px;height:8px}.stage.live:before{animation:pulse 2.2s ease-out infinite}.sc-promise{font-size:14px}.sc-promise b{color:var(--sev-high)}.sc-chart{border-top:1px solid var(--rule);padding-top:12px}.sc-chart .legend{display:inline-flex;gap:14px;font-size:12px;margin:6px 0 0}.sc-chart details{display:inline-block;margin-left:14px;font-size:12px;vertical-align:top}.sc-chart details summary{font-size:12px}.sc-chart .bar{transform-box:fill-box}.sc-chart .bar.up{transform-origin:50% 100%}.sc-chart .bar.down{transform-origin:50% 0}.reveal.in .sc-chart .bar{animation:grow .7s var(--ease) both;animation-delay:.35s}.sc-foot .btn{white-space:nowrap}@media (max-width:480px){.cat .signals li,.sc-card .signals li{grid-template-columns:1fr;gap:2px}.sc-foot{flex-direction:column;align-items:stretch}.sc-chart details{display:block;margin:6px 0 0}}.hero.compact{padding-top:44px;padding-bottom:36px}.hero.compact .hero-grid{display:block;padding:0}.hero.compact h1{font-size:clamp(28px,3.8vw,40px);max-width:none}.hero.compact p{font-size:15px;color:var(--navy-ink-2)}.hero.compact a{color:var(--navy-ink)}.section h2{font-family:var(--display);font-size:21px;font-weight:500;letter-spacing:-.01em}.verdict .text p:first-child{font-family:var(--display);font-size:23px;line-height:1.35}.panel{border-radius:var(--radius);box-shadow:var(--shadow-1);padding:26px;border-top:4px solid var(--accent)}.input{border-radius:8px;padding:12px 14px;min-height:44px;transition:border-color .2s,box-shadow .2s}.input:focus{border-color:var(--focus);box-shadow:0 0 0 3px color-mix(in srgb,var(--focus) 18%,transparent);outline:none}@media (max-width:640px){.verdict{gap:18px}.stamp{width:160px}.signals li{gap:4px}.perm,.signals li{grid-template-columns:1fr}.facts{grid-template-columns:1fr 1fr}.chart details{overflow-x:auto}table.flows{min-width:520px}}.footer{margin-top:120px;padding-top:56px;padding-bottom:40px;border-top:1px solid var(--navy-rule)}.footer .brand{font-family:var(--display);font-weight:600;font-size:20px}.footer .brand span{font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;margin-left:10px;color:var(--navy-ink-3)}.footer li{padding:6px 0}.footer li a:hover{color:var(--navy-ink)}@media (max-width:480px){.footer-grid{grid-template-columns:1fr}}.masthead{background:#000;-webkit-backdrop-filter:none;backdrop-filter:none;border-bottom-color:#1f1f1f}.hero:not(.compact){--paper:#0b2a5c;--surface:#123a7a;--navy-rule:#2a58a6;--navy-rule-strong:#3d6fc2;background:var(--paper)}.hero:not(.compact):before{background-image:linear-gradient(color-mix(in srgb,#ffffff 16%,transparent) 1px,transparent 0),linear-gradient(90deg,color-mix(in srgb,#ffffff 16%,transparent) 1px,transparent 0)}.hero:not(.compact) .eyebrow{color:#a9c4f2}.hero:not(.compact) .eyebrow:before{background:#a9c4f2}.hero:not(.compact) .lede{color:#c9d8f5}.hero:not(.compact) .trust li{border-right-color:#2a58a6;color:#a9c4f2}.hero:not(.compact) .btn{background:#fff;border-color:#fff;color:#0b2a5c}.hero:not(.compact) .btn.ghost{background:transparent;color:#fff;border-color:#3d6fc2}.hero:not(.compact) .btn.ghost:hover{border-color:#fff}.lang-select{position:relative}.lang-btn{display:inline-flex;align-items:center;gap:6px;height:36px;padding:0 10px;border:1px solid var(--navy-rule-strong);border-radius:8px;background:transparent;font-size:13px;color:var(--navy-ink-2);cursor:pointer}.lang-btn:hover,.lang-btn[aria-expanded=true]{color:var(--navy-ink);border-color:var(--navy-ink-3)}.lang-menu{position:absolute;top:calc(100% + 6px);right:0;min-width:120px;margin:0;padding:6px;list-style:none;background:#000;border:1px solid var(--navy-rule-strong);border-radius:10px;box-shadow:var(--shadow-2);z-index:30;animation:fade .15s var(--ease)}.lang-menu a{display:block;padding:8px 10px;border-radius:6px;font-size:14px;color:var(--navy-ink-2);text-decoration:none;white-space:nowrap}.lang-menu a:hover{background:var(--navy-2);color:var(--navy-ink)}.lang-menu a[aria-current=page]{color:var(--navy-ink);font-weight:600}@media (max-width:760px){.lang-btn{width:36px;padding:0;justify-content:center}.lang-btn>span{display:none}}.masthead{gap:12px}.nav-cta{gap:8px}.tier.featured{--paper:#0b2a5c;--surface:#123a7a;--rule:#2a58a6;--rule-strong:#3d6fc2;background:var(--paper);border-color:var(--paper)}.tier.featured .price{color:#fff}.tier.featured .price small{color:#a9c4f2}.tier.featured .pitch,.tier.featured ul{color:#c9d8f5}.tier.featured li{border-top-color:#2a58a6}.tier.featured .btn{background:#fff;border-color:#fff;color:#0b2a5c}.masthead{--navy-rule:#2a58a6;--navy-rule-strong:#3d6fc2;--navy-ink:#ffffff;--navy-ink-2:#a9c4f2;--navy-ink-3:#6f93d6;--navy-2:#0b2a5c;border-bottom-color:#2a58a6}.masthead .brand:before{background:#3d6fc2}.masthead .brand span{color:#a9c4f2;border-color:#3d6fc2}.nav-links a:after{background:#a9c4f2}.masthead .btn{background:#fff;border-color:#fff;color:#0b2a5c}.masthead .btn.ghost{background:transparent;color:#a9c4f2;border-color:#3d6fc2}.lang-menu,.mobile-menu{border-color:#2a58a6}.mobile-menu a:not(.btn){border-top-color:#2a58a6}.masthead .brand{color:#a9c4f2}.menu-btn{width:36px;height:36px;border-color:#3d6fc2;border-radius:8px}.menu-btn span{background:#a9c4f2;left:9px;right:9px}.menu-btn span:first-child{top:11px}.menu-btn span:nth-child(2){top:17px}.menu-btn span:nth-child(3){top:23px}.masthead.open .menu-btn span:first-child{transform:translateY(6px) rotate(45deg)}.masthead.open .menu-btn span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}.lang-menu,.masthead,.mobile-menu{background:#0b2a5c}.lang-menu a:hover{background:#123a7a}.masthead{--navy-rule:#ffffff;--navy-rule-strong:#ffffff;--navy-ink-2:#ffffff;--navy-ink-3:#ffffff;border-bottom-color:#fff}.masthead .brand{color:#fff}.masthead .brand:before{background:#fff}.masthead .brand span{color:#fff;border-color:#fff}.nav-links a{color:#fff}.nav-links a:after{background:#fff}.lang-btn,.masthead .btn.ghost{color:#fff;border-color:#fff}.lang-menu,.mobile-menu{border-color:#fff}.lang-menu a{color:#fff}.mobile-menu a:not(.btn){border-top-color:#fff}.menu-btn{border-color:#fff}.menu-btn span{background:#fff}.legal{max-width:72ch;padding:32px 0 48px}.legal section+section{margin-top:36px}.legal h2{font-size:20px;margin:0 0 12px}.legal p{font-size:15.5px;line-height:1.7;color:var(--ink-2);margin:0 0 12px}.legal ul{margin:0;padding-left:20px}.legal li{font-size:15.5px;line-height:1.7;color:var(--ink-2);margin:0 0 10px}body.gate-open{overflow:hidden}.gate{position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;padding:16px;background:rgba(10,10,10,.65)}.gate-box{width:100%;max-width:560px;max-height:calc(100vh - 32px);overflow:auto;padding:28px;background:var(--surface);color:var(--ink);border:1px solid var(--rule-strong);border-radius:var(--radius)}.gate-box .eyebrow{font-family:var(--mono);font-size:12.5px;color:var(--ink-3);text-transform:uppercase;letter-spacing:.12em;margin:0 0 12px}.gate-box h2{font-size:22px;margin:0 0 14px}.gate-box p{font-size:15px;line-height:1.65;color:var(--ink-2);margin:0 0 12px}.gate-box a,.gate-check{color:var(--ink)}.gate-check{display:flex;align-items:flex-start;gap:10px;margin:20px 0 16px;font-size:15px;cursor:pointer}.gate-check input{margin-top:3px;width:18px;height:18px;flex:none}.gate .btn:disabled{cursor:not-allowed}@media (max-width:760px){.gate-box{padding:22px 18px}}textarea.input{min-height:88px;resize:vertical;font:inherit;line-height:1.5}@media (max-width:760px){.hero.compact{padding-inline:calc(50vw - 50% + 16px)}.footer{margin-top:72px;padding-top:36px;padding-bottom:28px}.footer-grid{grid-template-columns:1fr;gap:18px}.footer h4{margin-bottom:4px}.footer ul{display:flex;flex-wrap:wrap;gap:2px 16px}.footer li{padding:2px 0}.footer .disclaimer{margin-top:20px;padding-top:14px;font-size:12.5px}.footer-meta{flex-direction:column;gap:6px;margin-top:14px;font-size:11.5px}}.hero.compact{padding-inline:calc(50vw - 50% + 24px)}.legal{padding-inline:24px}.masthead .brand:before{content:none}.footer .brand svg,.masthead .brand svg{flex:none}.footer .brand{display:inline-flex;align-items:center;gap:10px}.footer-email{display:inline-block;margin-top:10px;font-family:var(--mono);font-size:13px}