:root{--ink:#14283c;--navy:#102338;--navy-2:#193650;--teal:#3ad0c2;--paper:#fff;--mist:#f3f6f8;--line:#dce5eb;--muted:#586a78;--max:1150px}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:92px}
body{margin:0;color:var(--ink);background:var(--paper);font-family:Inter,"Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,BlinkMacSystemFont,sans-serif;font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased}
button,a{ -webkit-tap-highlight-color:transparent}
a{color:inherit;text-decoration:none}
a:focus-visible,button:focus-visible{outline:3px solid #49c5be;outline-offset:4px}
button{font:inherit}
p,h1,h2,h3{margin-top:0}
.container{width:min(var(--max),calc(100% - 48px));margin-inline:auto}
.skip-link{position:fixed;z-index:1000;top:-80px;left:12px;background:#fff;padding:8px 16px;border:2px solid var(--navy)}
.skip-link:focus{top:12px}
.notice-bar{background:#091b2b;color:#afc4d1;font-size:12px;letter-spacing:.025em}
.notice-bar .container{padding-block:7px}
.notice-bar span{margin-inline:10px;color:var(--teal)}
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:73px}
.brand{display:flex;align-items:center;gap:12px;font-size:17px;font-weight:800;letter-spacing:-.04em;white-space:nowrap}
.brand-symbol{height:28px;width:28px;display:flex;align-items:flex-end;gap:3px;transform:skew(-18deg)}
.brand-symbol i{display:block;width:6px;background:var(--navy);border-radius:2px 2px 0 0}
.brand-symbol i:nth-child(1){height:13px}.brand-symbol i:nth-child(2){height:27px;background:#159b99}.brand-symbol i:nth-child(3){height:20px}
.brand-muted{font-weight:500;color:#6b7e8c;font-size:12px;letter-spacing:0}
.site-nav{display:flex;align-items:center;gap:3px}
.site-nav a{font-size:13px;font-weight:650;padding:9px 12px;border-radius:7px;color:#365063;transition:background .2s,color .2s}
.site-nav a:hover,.site-nav a.is-active{background:#eaf3f4;color:#0a6a70}
.menu-toggle{display:none;border:0;background:transparent;width:42px;height:42px;padding:9px;cursor:pointer}
.menu-toggle span{display:block;height:2px;background:var(--navy);margin:5px 0;border-radius:2px;transition:transform .2s,opacity .2s}
.hero{background:var(--navy);color:#fff;overflow:hidden;position:relative}
.hero:before{content:"";position:absolute;width:650px;height:650px;left:-320px;top:-370px;background:radial-gradient(circle,rgba(57,209,197,.11),transparent 68%);pointer-events:none}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(360px,.88fr);align-items:center;gap:7%;padding-block:105px 89px;min-height:605px}
.eyebrow,.section-index,.quick-num,.visual-top,.visual-bottom,.step-number,.feature-grid article>span,.ai-label,.essay-meta,.news-date>span{font-size:11px;font-weight:800;letter-spacing:.14em;line-height:1.5}
.eyebrow{display:flex;align-items:center;gap:10px;color:var(--teal);margin-bottom:21px}
.eyebrow-line{width:28px;height:1px;background:currentColor}
.eyebrow-count{margin-left:12px;color:#8cabc0}
.hero h1{font-size:clamp(36px,4.2vw,61px);letter-spacing:-.055em;line-height:1.17;margin-bottom:26px;font-weight:800}
.hero h1 span{display:block;font-size:clamp(28px,3vw,44px);color:#cbdce6;margin-top:8px}
.hero-lead{font-size:17px;line-height:1.9;color:#dce8ed;max-width:650px;margin-bottom:15px}
.hero-context{font-size:13px;line-height:1.8;color:#a8c4d0;max-width:610px;margin-bottom:31px}
.hero-actions{display:flex;align-items:center;flex-wrap:wrap;gap:11px}
.button{min-height:46px;display:inline-flex;align-items:center;justify-content:center;gap:20px;padding:10px 17px;border-radius:7px;font-weight:750;font-size:13px;transition:transform .2s,background .2s}
.button:hover{transform:translateY(-2px)}
.button-primary{background:var(--teal);color:#0a2a36}.button-primary:hover{background:#67e5d6}
.button-light{border:1px solid #55738a;color:#e3f0f3}.button-light:hover{background:#233f57}
.text-link{font-size:13px;font-weight:700;color:#a4d6d4;padding:8px}
.text-link:hover{text-decoration:underline}
.hero-visual{position:relative;min-height:445px;border:1px solid #426077;background:linear-gradient(140deg,#1f405b 0%,#143149 55%,#102b42 100%);border-radius:16px;box-shadow:26px 28px 0 rgba(2,16,31,.22),0 34px 80px rgba(1,15,29,.2);overflow:hidden}
.hero-visual:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,transparent 98%,rgba(255,255,255,.055) 98%),linear-gradient(0deg,transparent 98%,rgba(255,255,255,.055) 98%);background-size:29px 29px;opacity:.42}
.visual-top{position:relative;z-index:1;display:flex;justify-content:space-between;padding:26px 30px;color:#97becc;font-size:10px}
.visual-top span:last-child{color:var(--teal)}
.visual-orbit{position:absolute;inset:47px 20px 65px;display:grid;place-items:center}
.orbit-ring{position:absolute;border:1px solid rgba(95,180,189,.29);border-radius:50%;aspect-ratio:1}
.orbit-one{width:295px}.orbit-two{width:390px;border-style:dashed;opacity:.75}
.orbit-core{position:relative;z-index:1;width:205px;aspect-ratio:1;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;border-radius:50%;background:radial-gradient(circle at 35% 25%,#367083,#183e57 65%);border:1px solid #5e9aa4;box-shadow:0 0 55px rgba(54,196,191,.13)}
.orbit-core span{font-size:11px;color:#92dad1;letter-spacing:.2em;margin-bottom:10px}.orbit-core strong{font-size:28px;line-height:1.3;letter-spacing:.02em}
.orbit-dot{position:absolute;width:12px;height:12px;border:2px solid var(--teal);border-radius:50%;background:#153750;z-index:2}.dot-one{top:19%;left:20%}.dot-two{right:17%;bottom:24%;width:8px;height:8px}
.visual-bottom{position:absolute;bottom:0;left:0;right:0;display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid #48687d;background:rgba(13,39,60,.9);letter-spacing:.04em;color:#d6e7ed}
.visual-bottom span{padding:17px 15px;text-align:center;border-right:1px solid #48687d}.visual-bottom span:last-child{border:0}.visual-bottom b{color:var(--teal);margin-right:5px}
.hero-footer{position:relative;display:flex;justify-content:space-between;border-top:1px solid #3c5669;padding-block:17px 20px;color:#9db7c3;font-size:11px;letter-spacing:.06em}
.quick-start{background:#f8fafb;border-bottom:1px solid var(--line)}
.quick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;padding-block:25px}
.quick-card{background:#fff;padding:22px 24px 20px;border:1px solid var(--line);border-radius:10px;transition:transform .2s,border-color .2s,box-shadow .2s}
.quick-card:hover{transform:translateY(-4px);border-color:#82b9bb;box-shadow:0 12px 28px rgba(12,41,57,.07)}
.quick-card>span{display:block}.quick-num{color:#3b898d;margin-bottom:14px}
.quick-card strong{display:block;font-size:18px;line-height:1.4;margin-bottom:9px}
.quick-card>span:last-child{color:var(--muted);font-size:13px}.quick-card b{float:right;color:#008d8b}
.section{padding-block:102px;scroll-margin-top:70px}
.section-grid{display:grid;grid-template-columns:minmax(280px,.82fr) minmax(0,1.18fr);gap:9%}
.section-heading{align-self:start;position:sticky;top:128px}
.section-index{display:block;color:#138c8c;margin-bottom:18px}
.section h2{font-size:clamp(29px,3.3vw,43px);letter-spacing:-.045em;line-height:1.29;margin-bottom:20px}
.section-kicker{font-size:14px;color:#657a88;max-width:310px;line-height:1.8}
.prose p{margin:0 0 21px;color:#374e5e;font-size:15px;line-height:2}
.prose strong{color:#173b4d}
.source-line{margin-top:28px!important;padding-top:17px;border-top:1px solid var(--line);font-size:12px!important;color:#687b86!important}
.source-line a,.essay>a,.news-copy>a{color:#087f80;font-weight:750;text-decoration:underline;text-decoration-color:#9ed1cd;text-underline-offset:3px}
.source-line a:hover,.essay>a:hover,.news-copy>a:hover{color:#005b60}
.section-tinted{background:var(--mist)}
.section-top{display:flex;justify-content:space-between;align-items:end;gap:50px;margin-bottom:38px}
.section-top h2{margin-bottom:0}
.section-top>p{max-width:420px;color:#607583;font-size:14px;line-height:1.9;margin:0 0 3px}
.step-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}
.step-card{background:#fff;border:1px solid #dce5e9;border-radius:12px;padding:27px 25px 30px;min-height:295px}
.step-number{color:#0a898c;display:block;margin-bottom:40px}
.step-card h3{font-size:19px;letter-spacing:-.025em;margin-bottom:11px}
.step-card p{font-size:14px;line-height:1.95;color:#4b6170;margin-bottom:0}
.source-band{margin-top:17px;background:#deeeee;border:1px solid #c8e1e1;border-radius:12px;padding:21px 25px;display:flex;align-items:center;justify-content:space-between;gap:25px}
.source-band>div{position:relative;padding-left:42px}.source-band strong{font-size:15px}.source-band p{font-size:12px;color:#526e74;margin:4px 0 0}
.source-mark{position:absolute;top:1px;left:0;display:grid;place-items:center;width:29px;height:29px;background:#0b777a;border-radius:50%;color:#fff;font-weight:700}
.source-band>a{white-space:nowrap;background:#11575b;color:#fff;border-radius:6px;padding:10px 15px;font-size:12px;font-weight:750}.source-band>a:hover{background:#083f43}
.checklist{margin:27px 0 23px;border-top:1px solid var(--line)}
.checklist>div{display:grid;grid-template-columns:40px 1fr;gap:12px;padding:16px 0;border-bottom:1px solid var(--line)}
.checklist span{font-size:12px;font-weight:800;color:#159494;padding-top:5px}.checklist p{margin:0}
.section-dark{background:#10283d;color:#f4fafb}
.section-dark .section-index{color:#57d8cd}.section-dark .section-top>p{color:#afc8d2}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:#34546a;border:1px solid #34546a;border-radius:12px;overflow:hidden}
.feature-grid article{background:#17344a;padding:28px 26px 29px}.feature-grid article>span{color:#6ad1c8}.feature-grid h3{font-size:19px;margin:27px 0 11px}.feature-grid p{font-size:14px;line-height:1.9;color:#bed0d9;margin:0}
.ai-note{margin-top:18px;display:grid;grid-template-columns:200px 1fr;gap:42px;background:#24445a;border:1px solid #42667b;border-radius:12px;padding:30px 32px}
.ai-label{color:#64d6cb;padding-top:5px}.ai-note h3{font-size:20px;margin-bottom:10px}.ai-note p{font-size:14px;line-height:1.95;color:#cadbe1;margin:0}
.ai-links{display:flex;flex-wrap:wrap;gap:12px 22px;margin-top:17px}.ai-links a{color:#7de0d5;font-size:12px;font-weight:750}.ai-links a:hover{text-decoration:underline}
.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}
.essay{border:1px solid var(--line);border-radius:12px;padding:26px 25px 29px;display:flex;flex-direction:column;background:#fff;box-shadow:0 15px 40px rgba(22,52,69,.045)}
.essay-meta{display:flex;justify-content:space-between;gap:12px;color:#598088;letter-spacing:.03em;font-size:11px;margin-bottom:27px}.essay-meta time{color:#80929c}
.essay h3{font-size:20px;line-height:1.5;letter-spacing:-.025em;margin-bottom:15px}
.essay p{font-size:14px;line-height:1.95;color:#4c6270;margin:0 0 25px;flex:1}
.essay>a{font-size:12px;align-self:start}
.news-list{border-top:1px solid #cbdce3}
.news-item{display:grid;grid-template-columns:160px 1fr;gap:40px;padding:32px 7px;border-bottom:1px solid #cbdce3;scroll-margin-top:105px}
.news-date time{font-size:27px;font-weight:800;line-height:1;letter-spacing:-.045em;display:block;color:#163951}.news-date time span{display:block;font-size:15px;letter-spacing:.04em;font-weight:650;margin-top:7px;color:#587686}
.news-date>span{display:inline-block;color:#0c8987;margin-top:19px;letter-spacing:.06em}
.news-copy h3{font-size:21px;line-height:1.45;letter-spacing:-.025em;margin-bottom:12px}.news-copy p{font-size:14px;line-height:2;color:#4b6270;margin-bottom:14px}.news-copy>a{font-size:12px}
.site-footer{background:#091d2d;color:#c8d8e0;padding-top:63px}
.footer-grid{display:grid;grid-template-columns:1.3fr .65fr .9fr;gap:80px;padding-bottom:58px}
.footer-brand{font-size:18px;color:#fff;font-weight:800;display:block;margin-bottom:14px}
.footer-grid p{font-size:13px;line-height:1.9;margin:0;color:#a9c0cb}.footer-grid>div:first-child p{max-width:370px}
.footer-grid strong{display:block;color:#fff;font-size:13px;margin-bottom:15px}.footer-grid nav a{display:block;font-size:12px;margin:7px 0;color:#b6cbd4}.footer-grid nav a:hover,.footer-bottom a:hover{text-decoration:underline;color:#6ee1d4}
.footer-bottom{border-top:1px solid #2b4353;display:flex;justify-content:space-between;gap:20px;padding-block:20px 24px;font-size:11px;color:#819daa}
.back-to-top{position:fixed;z-index:90;bottom:20px;right:20px;width:42px;height:42px;border:1px solid #b7d9d7;border-radius:50%;background:#fff;color:#0a7776;font-size:20px;font-weight:700;box-shadow:0 8px 24px rgba(14,43,56,.16);cursor:pointer;opacity:0;visibility:hidden;transform:translateY(10px);transition:opacity .2s,visibility .2s,transform .2s}
.back-to-top.is-visible{opacity:1;visibility:visible;transform:none}.back-to-top:hover{background:#e5f7f5}
@media(max-width:980px){.brand-muted{display:none}.site-nav a{padding-inline:8px}.hero-grid{grid-template-columns:1fr .8fr;gap:30px}.hero-visual{min-height:390px}.orbit-one{width:240px}.orbit-two{width:310px}.orbit-core{width:170px}.orbit-core strong{font-size:24px}.footer-grid{gap:40px}}
@media(max-width:760px){html{scroll-padding-top:73px}.container{width:min(var(--max),calc(100% - 32px))}.notice-bar{font-size:10px}.notice-bar .container{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.notice-bar span{margin-inline:4px}.header-inner{min-height:64px}.brand{font-size:15px}.brand-muted{display:inline;font-size:10px}.menu-toggle{display:block}.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}.site-nav{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 16px 20px rgba(5,29,43,.08);padding:12px 16px 16px;grid-template-columns:repeat(2,1fr);gap:4px}.site-nav.is-open{display:grid}.site-nav a{padding:10px 13px}.hero-grid{grid-template-columns:1fr;padding-block:67px 50px;min-height:0}.hero h1{font-size:42px}.hero h1 span{font-size:29px}.hero-visual{min-height:315px;max-width:500px;width:100%;margin:auto}.orbit-one{width:215px}.orbit-two{width:285px}.orbit-core{width:150px}.orbit-core strong{font-size:22px}.visual-top{padding:18px 21px}.visual-bottom span{padding:12px}.hero-footer{font-size:10px}.quick-grid,.step-grid,.article-grid,.feature-grid{grid-template-columns:1fr}.quick-grid{gap:10px}.quick-card{padding:18px 20px}.quick-num{margin-bottom:8px}.section{padding-block:70px}.section-grid{grid-template-columns:1fr;gap:23px}.section-heading{position:static}.section h2{font-size:32px}.section-top{display:block;margin-bottom:27px}.section-top>p{margin-top:15px}.step-card{min-height:0}.step-number{margin-bottom:18px}.source-band{display:block}.source-band>a{display:inline-block;margin-top:17px;white-space:normal}.feature-grid{gap:1px}.feature-grid article{padding:23px}.feature-grid h3{margin-top:12px}.ai-note{grid-template-columns:1fr;gap:13px;padding:25px}.article-grid{gap:12px}.essay-meta{margin-bottom:12px}.news-item{grid-template-columns:1fr;gap:17px;padding:26px 0}.news-date time{font-size:20px}.news-date time span{display:inline;font-size:15px;margin-left:5px}.news-date>span{margin:0 0 0 15px}.news-copy h3{font-size:19px}.footer-grid{grid-template-columns:1fr 1fr;gap:34px}.footer-grid>div:first-child{grid-column:1/-1}.footer-bottom{display:block}.footer-bottom a{display:block;margin-top:7px}}
@media(max-width:420px){.brand-muted{display:none}.hero h1{font-size:36px}.hero h1 span{font-size:25px}.hero-lead{font-size:15px}.hero-visual{min-height:285px}.orbit-two{width:250px}.orbit-one{width:190px}.orbit-core{width:137px}.visual-bottom{font-size:9px}.hero-footer{display:block}.hero-footer span{display:block}.hero-footer span+span{margin-top:3px}.footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}}