:root{--paper:#f4f0e7;--paper-deep:#e5dfd2;--ink:#172b3d;--muted:#63717c;--line:#c9c5bb;--navy:#163a55;--teal:#3f8c8a;--orange:#e58b4a;--plum:#6f5a78;--white:#fffdf8;--shadow:0 18px 42px rgba(22,58,85,.11)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.72}a{color:inherit;text-decoration:none}p{margin:0 0 16px}.consortium-header{position:sticky;top:0;z-index:20;background:rgba(244,240,231,.95);border-bottom:1px solid var(--line);backdrop-filter:blur(10px)}.consortium-header-inner{max-width:1240px;min-height:74px;margin:auto;padding:0 28px;display:flex;align-items:center;gap:36px}.consortium-brand{display:flex;align-items:center;gap:12px;font-size:19px;font-weight:800;letter-spacing:.1px}.brand-signal{width:22px;height:22px;border:2px solid var(--teal);border-radius:50%;position:relative;display:block}.brand-signal:after{content:"";position:absolute;width:7px;height:7px;background:var(--orange);border-radius:50%;right:-4px;top:3px}.consortium-header nav{display:flex;gap:4px;margin-left:auto}.consortium-header nav a{padding:10px 13px;color:var(--muted);font-size:14px;border-bottom:2px solid transparent}.consortium-header nav a:hover,.consortium-header nav a.nav-current{color:var(--navy);border-color:var(--orange)}.menu-toggle{display:none;border:1px solid var(--line);background:var(--white);color:var(--ink);padding:8px 12px;border-radius:4px;font:inherit}.site-main{max-width:1240px;margin:auto;padding:0 28px 76px}.hero{min-height:618px;padding:74px 0 70px;display:grid;grid-template-columns:minmax(0,.92fr) minmax(440px,1.2fr);gap:56px;align-items:center}.hero-copy{max-width:570px}.eyebrow,.section-intro>span,.section-head>.eyebrow,.article-kicker,.info-card>span{font-size:12px;font-weight:800;letter-spacing:1.15px;text-transform:uppercase;color:var(--orange)}.hero h1{font-size:48px;line-height:1.16;margin:18px 0 21px;max-width:560px}.hero-lead{font-size:18px;color:#4f606d;max-width:540px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:28px 0}.button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:10px 20px;border:1px solid var(--navy);border-radius:4px;font-weight:800;font-size:14px;transition:transform .18s,box-shadow .18s}.button:hover{transform:translateY(-2px);box-shadow:0 8px 18px rgba(22,58,85,.15)}.button.primary{background:var(--navy);color:#fff}.button.secondary{background:transparent;color:var(--navy)}.hero-stats{display:flex;gap:24px;border-top:1px solid var(--line);padding-top:17px;color:var(--muted);font-size:13px}.hero-stats b{display:block;color:var(--navy);font-size:22px;line-height:1.1}.hero-visual{margin:0;padding:9px;background:var(--white);border:1px solid var(--line);box-shadow:var(--shadow);transform:rotate(1deg)}.hero-visual img{display:block;width:100%;height:auto}.signal-strip{display:grid;grid-template-columns:repeat(4,1fr);border-top:2px solid var(--navy);border-bottom:1px solid var(--navy)}.signal-strip>div{min-height:155px;padding:22px 18px;border-right:1px solid var(--line)}.signal-strip>div:last-child{border-right:0}.signal-strip span{display:block;color:var(--orange);font-size:11px;font-weight:800;letter-spacing:1px}.signal-strip strong{display:block;color:var(--navy);font-size:18px;margin:8px 0}.signal-strip p{color:var(--muted);font-size:14px}.origin-band{display:grid;grid-template-columns:1fr 1fr;gap:58px;padding:70px 0;border-bottom:1px solid var(--line)}.origin-band h2{font-size:32px;line-height:1.26;margin:10px 0 14px}.origin-band p{color:#52616c;max-width:570px}.topic-grid{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--navy)}.topic-grid div{min-height:108px;padding:19px 15px;border-bottom:1px solid var(--line);border-right:1px solid var(--line)}.topic-grid div:nth-child(even){border-right:0}.topic-grid b{display:block;color:var(--navy);font-size:18px}.topic-grid span{color:var(--muted);font-size:13px}.feature-section,.article-section,.faq-section{border-bottom:1px solid var(--line);padding:64px 0}.section-head{max-width:720px;margin-bottom:28px}.section-head h2{font-size:31px;line-height:1.25;margin:8px 0}.section-head p{color:var(--muted)}.info-cards{display:grid;grid-template-columns:repeat(4,1fr);border-top:2px solid var(--navy);border-bottom:1px solid var(--navy)}.info-card{min-height:215px;padding:22px 18px;border-right:1px solid var(--line);display:flex;flex-direction:column}.info-card:last-child{border-right:0}.info-card:hover{background:#e8eeea}.info-card strong{font-size:19px;color:var(--navy);margin:8px 0}.info-card p{color:var(--muted);font-size:14px}.info-card em{margin-top:auto;color:var(--orange);font-style:normal;font-size:13px;font-weight:800}.article-list{border-top:2px solid var(--navy)}.article-row{display:grid;grid-template-columns:132px minmax(0,1fr) 1.18fr;gap:22px;padding:22px 0;border-bottom:1px solid var(--line);align-items:start}.article-meta{display:flex;flex-direction:column;gap:3px;color:var(--muted);font-size:12px}.article-meta span{color:var(--orange);font-size:11px;font-weight:800}.article-row h3{margin:0;font-size:18px;line-height:1.45;color:var(--navy)}.article-row h3 a:hover{color:var(--orange)}.article-row p{margin:0;color:var(--muted);font-size:14px}.faq-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.faq-grid details,.help-list details{background:var(--white);border:1px solid var(--line);padding:15px 17px}.faq-grid summary,.help-list summary{cursor:pointer;font-weight:800;color:var(--navy)}.faq-grid p,.help-list p{margin:9px 0 0;color:var(--muted);font-size:14px}.section-intro{max-width:760px;padding:68px 0 42px}.section-intro h1{font-size:44px;line-height:1.18;margin:13px 0 14px}.section-intro p{font-size:17px;color:var(--muted)}.simple-page{padding-bottom:38px}.prose{max-width:810px;margin:42px 0 0}.prose h2{font-size:24px;color:var(--navy);line-height:1.3;margin:32px 0 10px}.prose p{color:#4b5a65}.text-link{display:inline-block;color:var(--teal);font-weight:800;font-size:14px;border-bottom:1px solid currentColor;padding-bottom:3px}.device-table{border-top:2px solid var(--navy);border-bottom:1px solid var(--navy)}.device-table-head,.device-row{display:grid;grid-template-columns:1fr 1.5fr .7fr;gap:22px;align-items:center;padding:19px 16px;border-bottom:1px solid var(--line)}.device-table-head{background:var(--paper-deep);font-size:11px;color:var(--muted);font-weight:800;letter-spacing:1px;text-transform:uppercase}.device-row:last-child{border-bottom:0}.device-row strong{font-size:18px;color:var(--navy)}.device-row span{color:var(--teal);font-weight:800;font-size:13px}.device-row p{margin:5px 0 0;color:var(--muted);font-size:14px}.device-row .text-link{text-align:right}.method-board{display:grid;grid-template-columns:repeat(4,1fr);margin-top:45px;border-top:1px solid var(--navy);border-bottom:1px solid var(--navy)}.method-board div{padding:20px;border-right:1px solid var(--line)}.method-board div:last-child{border-right:0}.method-board b{display:block;color:var(--navy)}.method-board span{display:block;color:var(--muted);font-size:14px;margin-top:5px}.help-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;border-top:2px solid var(--navy);padding-top:12px}.contact-box{border-top:2px solid var(--navy);border-bottom:1px solid var(--navy);padding:28px 0;max-width:820px}.contact-box a{font-size:25px;font-weight:800;color:var(--navy)}.contact-box p{color:var(--muted);margin-top:13px}.article-page{max-width:860px;margin:auto;padding-top:68px}.article-page h1{font-size:43px;line-height:1.2;margin:14px 0}.article-lead{font-size:18px;color:#4c5d68;border-bottom:1px solid var(--line);padding-bottom:28px}.article-copy{font-size:16px}.article-copy section{padding:25px 0;border-bottom:1px solid var(--line)}.article-copy h2{font-size:24px;line-height:1.35;color:var(--navy);margin:0 0 10px}.article-copy p{color:#40525e}.reading-note{margin:28px 0;border-left:4px solid var(--teal);background:var(--white);padding:17px 20px}.reading-note strong{color:var(--navy)}.reading-note p{margin:5px 0 0;color:var(--muted);font-size:14px}.related{margin-top:56px}.related h2{font-size:24px;color:var(--navy)}.not-found{text-align:center;padding:130px 0}.not-found>span{color:var(--orange);font-weight:800;letter-spacing:2px}.not-found h1{font-size:42px;margin:12px 0}.not-found p{color:var(--muted);margin-bottom:25px}.consortium-footer{background:var(--paper-deep);border-top:1px solid var(--navy);padding:42px max(28px,calc((100% - 1184px)/2)) 22px}.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:42px}.consortium-footer strong{font-size:18px}.consortium-footer p{font-size:13px;color:var(--muted)}.footer-links{display:flex;flex-direction:column;align-items:flex-start;gap:7px;font-size:13px}.footer-links b{color:var(--navy);margin-bottom:3px}.footer-links a:hover{color:var(--orange)}.footer-bottom{display:flex;justify-content:space-between;gap:18px;border-top:1px solid var(--line);padding-top:14px;margin-top:30px;color:var(--muted);font-size:12px}@media(max-width:920px){.hero{grid-template-columns:1fr;gap:34px;padding-top:48px}.hero-copy{max-width:none}.hero-visual{max-width:760px}.signal-strip{grid-template-columns:repeat(2,1fr)}.signal-strip>div:nth-child(2){border-right:0}.signal-strip>div:nth-child(-n+2){border-bottom:1px solid var(--line)}.origin-band{grid-template-columns:1fr;gap:32px}.info-cards{grid-template-columns:repeat(2,1fr)}.info-card:nth-child(2){border-right:0}.info-card:nth-child(-n+2){border-bottom:1px solid var(--line)}.article-row{grid-template-columns:112px minmax(0,1fr)}.article-row p{grid-column:2}.faq-grid{grid-template-columns:repeat(2,1fr)}.method-board{grid-template-columns:repeat(2,1fr)}.method-board div:nth-child(2){border-right:0}.method-board div:nth-child(-n+2){border-bottom:1px solid var(--line)}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:1/-1}.help-list{grid-template-columns:1fr}}@media(max-width:650px){.consortium-header-inner{min-height:64px;padding:0 18px}.consortium-header nav{display:none;position:absolute;top:64px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);padding:8px 18px;flex-direction:column}.consortium-header nav.is-open{display:flex}.consortium-header nav a{border-bottom:0;border-left:3px solid transparent}.consortium-header nav a.nav-current{border-left-color:var(--orange)}.menu-toggle{display:block;margin-left:auto}.site-main{padding:0 18px 52px}.hero{min-height:auto;padding:42px 0 48px}.hero h1{font-size:35px}.hero-lead{font-size:16px}.hero-stats{gap:16px}.signal-strip{grid-template-columns:1fr}.signal-strip>div,.signal-strip>div:nth-child(2){border-right:0;border-bottom:1px solid var(--line)}.signal-strip>div:last-child{border-bottom:0}.origin-band{padding:50px 0}.origin-band h2{font-size:28px}.topic-grid{grid-template-columns:1fr}.topic-grid div{border-right:0}.info-cards{grid-template-columns:1fr}.info-card,.info-card:nth-child(2){border-right:0;border-bottom:1px solid var(--line)}.info-card:last-child{border-bottom:0}.feature-section,.article-section,.faq-section{padding:50px 0}.section-intro{padding:50px 0 32px}.section-intro h1{font-size:34px}.article-row{display:block;padding:21px 0}.article-row h3{margin:8px 0}.article-row p{margin-top:7px}.faq-grid{grid-template-columns:1fr}.device-table-head{display:none}.device-row{display:block;padding:21px 0}.device-row .text-link{margin-top:10px}.method-board{grid-template-columns:1fr}.method-board div,.method-board div:nth-child(2){border-right:0;border-bottom:1px solid var(--line)}.method-board div:last-child{border-bottom:0}.article-page{padding-top:48px}.article-page h1{font-size:34px}.article-lead{font-size:16px}.footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:6px}}