/* roulang page: index */
:root{
  --ink:#172724;
  --ink-soft:#40514d;
  --muted:#71827d;
  --paper:#fbfaf6;
  --mint:#eef6f1;
  --mint-deep:#dcece3;
  --line:#dbe6df;
  --teal:#0d7667;
  --teal-dark:#075b51;
  --teal-light:#bce6d8;
  --orange:#d98248;
  --orange-bg:#fff1e7;
  --white:#fff;
  --graphite:#162622;
  --radius:18px;
  --radius-sm:12px;
  --shadow:0 14px 36px rgba(21,48,41,.09);
  --shadow-hover:0 18px 42px rgba(21,48,41,.16);
  --container:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.75}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input,textarea{font:inherit}
button{cursor:pointer}
:focus-visible{outline:3px solid rgba(13,118,103,.35);outline-offset:3px}
.container{width:min(calc(100% - 48px),var(--container));margin:0 auto}
.section{padding:88px 0}
.section-soft{background:var(--mint)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--teal);font-size:13px;font-weight:800;letter-spacing:.08em}
.eyebrow:before{content:"";width:26px;height:2px;background:var(--orange)}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:30px;margin-bottom:34px}
.section-head h2,.title-column h2{margin:7px 0 0;font-size:32px;line-height:1.3;letter-spacing:-.03em}
.section-head p{max-width:480px;margin:0;color:var(--ink-soft);font-size:15px}
.btn{display:inline-flex;justify-content:center;align-items:center;gap:9px;min-height:48px;padding:0 20px;border:1px solid transparent;border-radius:10px;font-weight:800;font-size:15px;transition:transform .2s,box-shadow .2s,background .2s,color .2s}
.btn:hover{transform:translateY(-2px);box-shadow:0 9px 20px rgba(9,89,77,.18)}
.btn-primary{background:var(--teal);color:#fff}
.btn-primary:hover{background:var(--teal-dark)}
.btn-secondary{background:#fff;border-color:#b8d2c7;color:var(--teal-dark)}
.btn-secondary:hover{background:var(--mint)}
.btn-dark{background:#fff;color:var(--graphite)}
.btn-dark:hover{background:var(--teal-light)}
.tag{display:inline-flex;align-items:center;padding:4px 9px;border-radius:999px;background:var(--mint);color:var(--teal-dark);font-size:12px;font-weight:800}
.tag.orange{background:var(--orange-bg);color:#ab5a2c}
.site-header{position:sticky;z-index:30;top:0;border-bottom:1px solid rgba(219,230,223,.8);background:rgba(251,250,246,.92);backdrop-filter:blur(14px)}
.header-inner{height:76px;display:flex;align-items:center;justify-content:space-between;gap:22px}
.brand{display:flex;align-items:center;gap:10px;min-width:230px;font-weight:900;font-size:15px;letter-spacing:-.03em;line-height:1.25}
.brand-mark{display:grid;place-items:center;width:34px;height:34px;flex:0 0 34px;border-radius:10px;background:var(--teal);color:#fff;font-size:14px;box-shadow:inset 0 -7px 0 rgba(0,0,0,.11)}
.nav{display:flex;align-items:center;justify-content:center;gap:3px}
.nav a{position:relative;padding:9px 12px;border-radius:8px;color:#4a5c56;font-size:14px;font-weight:700;white-space:nowrap;transition:color .2s,background .2s}
.nav a:hover,.nav a.active{color:var(--teal-dark);background:var(--mint)}
.nav a.active:after{content:"";position:absolute;right:12px;bottom:3px;left:12px;height:2px;border-radius:2px;background:var(--teal)}
.header-actions{display:flex;align-items:center;gap:10px}
.header-actions .btn{min-height:40px;padding:0 15px}
.menu-toggle{display:none;width:42px;height:40px;border:1px solid var(--line);border-radius:9px;background:#fff;color:var(--teal-dark)}
.hero{position:relative;overflow:hidden;padding:74px 0 68px;background:linear-gradient(126deg,#fbfaf6 0%,#fbfaf6 55%,#e6f3ed 55%,#e6f3ed 100%)}
.hero:before{content:"";position:absolute;left:-90px;top:-120px;width:440px;height:440px;border:1px solid rgba(13,118,103,.12);border-radius:50%}
.hero:after{content:"";position:absolute;right:4%;bottom:-160px;width:440px;height:260px;background-image:radial-gradient(rgba(13,118,103,.2) 1px,transparent 1px);background-size:15px 15px;transform:rotate(-12deg)}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.03fr .97fr;align-items:center;gap:60px}
.hero-copy h1{max-width:670px;margin:12px 0 18px;font-size:clamp(38px,5vw,62px);line-height:1.16;letter-spacing:-.055em}
.hero-copy p{max-width:600px;margin:0;color:var(--ink-soft);font-size:18px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-note{display:flex;align-items:center;gap:9px;margin-top:22px;color:var(--muted);font-size:13px}
.dot{width:8px;height:8px;border-radius:50%;background:var(--orange)}
.preview-stage{position:relative;min-height:415px}
.browser-card{position:absolute;right:7%;top:24px;width:min(370px,86%);padding:13px;border:1px solid #bfd9ce;border-radius:24px;background:#fff;box-shadow:var(--shadow-hover);transform:rotate(3deg)}
.browser-bar{display:flex;align-items:center;gap:6px;padding:2px 3px 11px}
.browser-bar i{width:8px;height:8px;border-radius:50%;background:#d5e4dc}.browser-bar i:nth-child(2){background:#f3ca9d}.browser-bar i:nth-child(3){background:#92c7b6}
.game-screen{overflow:hidden;border-radius:16px;background:linear-gradient(145deg,#16463e,#0a7264);color:#fff}
.screen-top{display:flex;align-items:center;justify-content:space-between;padding:16px 17px;font-size:12px;color:#cfebe1}
.screen-logo{font-size:14px;font-weight:900;color:#fff}
.screen-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:10px;padding:0 14px 14px}
.screen-main{min-height:224px;padding:19px;border-radius:13px;background:linear-gradient(140deg,#4cb69c,#147a6d)}
.screen-main small{color:#d7f6eb}.screen-main strong{display:block;margin-top:40px;font-size:30px;line-height:1.15}.screen-main span{display:inline-block;margin-top:12px;padding:4px 8px;border-radius:6px;background:rgba(255,255,255,.18);font-size:11px}
.screen-side{display:grid;gap:10px}.screen-side b{display:block;min-height:72px;border-radius:11px;background:#24584e}.screen-side b:nth-child(2){background:#d98248}.screen-side b:nth-child(3){background:#80c6b4}
.float-chip{position:absolute;z-index:2;display:flex;align-items:center;gap:9px;padding:10px 13px;border:1px solid var(--line);border-radius:12px;background:#fff;box-shadow:0 9px 20px rgba(22,49,42,.13);font-size:13px;font-weight:800}
.float-chip b{display:grid;place-items:center;width:25px;height:25px;border-radius:7px;background:var(--mint);color:var(--teal)}
.chip-one{left:0;top:74px}.chip-two{left:8%;bottom:18px}.chip-three{right:0;bottom:76px}
.quickbar{position:relative;z-index:3;margin-top:-25px}
.quickbar-grid{display:grid;grid-template-columns:repeat(4,1fr);overflow:hidden;border:1px solid var(--line);border-radius:16px;background:#fff;box-shadow:var(--shadow)}
.quick-link{display:flex;align-items:center;gap:13px;padding:20px 24px;border-right:1px solid var(--line);transition:background .2s}
.quick-link:last-child{border:0}.quick-link:hover{background:var(--mint)}
.quick-icon{display:grid;place-items:center;width:38px;height:38px;border-radius:11px;background:var(--mint);color:var(--teal);font-size:18px}
.quick-link strong{display:block;font-size:15px;line-height:1.35}.quick-link span{font-size:12px;color:var(--muted)}.quick-arrow{margin-left:auto;color:var(--teal);font-size:20px}
.showcase{display:grid;grid-template-columns:1.17fr .83fr;gap:22px}
.feature-game{position:relative;overflow:hidden;min-height:405px;padding:34px;border-radius:var(--radius);background:linear-gradient(135deg,#124d43,#087367);color:#fff;box-shadow:var(--shadow)}
.feature-game:after{content:"PLAY";position:absolute;right:-20px;bottom:-48px;color:rgba(255,255,255,.07);font-size:126px;font-weight:900;letter-spacing:-.09em}
.feature-game h3{position:relative;z-index:1;max-width:310px;margin:16px 0 12px;font-size:32px;line-height:1.23}.feature-game p{position:relative;z-index:1;max-width:310px;color:#d3eee5}
.feature-game .badge-line{position:absolute;z-index:1;bottom:30px;left:34px;display:flex;gap:8px}.badge-line .tag{background:rgba(255,255,255,.16);color:#fff}
.arc{position:absolute;right:38px;top:65px;width:170px;height:170px;border:22px solid #74c7ae;border-left-color:transparent;border-bottom-color:#d98248;border-radius:50%;transform:rotate(-30deg)}
.mini-games{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.mini-game{position:relative;overflow:hidden;min-height:191px;padding:20px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;transition:transform .2s,box-shadow .2s}
.mini-game:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.mini-art{position:absolute;right:-8px;top:-6px;width:88px;height:88px;border-radius:24px;background:var(--mint-deep);transform:rotate(20deg)}.mini-game:nth-child(2) .mini-art{background:#f6d7bd}.mini-game:nth-child(3) .mini-art{background:#b9dcd1}.mini-game:nth-child(4) .mini-art{background:#e8e2c4}
.mini-game h3{position:relative;margin:24px 0 6px;font-size:18px}.mini-game p{position:relative;margin:0;color:var(--muted);font-size:13px}.mini-game .tag{position:relative;margin-top:16px}
.channel-layout{display:grid;grid-template-columns:290px 1fr;gap:42px;align-items:start}
.title-column{position:sticky;top:102px}.title-column p{color:var(--ink-soft)}
.channel-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:16px}
.channel-card{position:relative;display:block;min-height:185px;padding:25px;overflow:hidden;border:1px solid var(--line);border-radius:var(--radius);background:#fff;transition:transform .2s,box-shadow .2s,border-color .2s}
.channel-card:hover{transform:translateY(-3px);border-color:#9fcabe;box-shadow:var(--shadow)}
.channel-card:nth-child(2){background:#e5f1ec}.channel-card:nth-child(3){background:#f4eee3}.channel-card:nth-child(4){background:#d9ebe4}
.channel-num{color:var(--teal);font-size:12px;font-weight:900;letter-spacing:.12em}.channel-card h3{margin:28px 0 5px;font-size:21px}.channel-card p{max-width:250px;margin:0;color:var(--ink-soft);font-size:14px}.channel-card .card-arrow{position:absolute;right:22px;bottom:18px;color:var(--teal);font-size:22px}
.download-panel{overflow:hidden;border-radius:24px;background:var(--graphite);color:#fff}
.download-grid{display:grid;grid-template-columns:.9fr 1.1fr;align-items:center}
.download-visual{min-height:450px;padding:47px 10%;background:linear-gradient(150deg,#0a5d52,#18352f);position:relative}
.phone{position:relative;z-index:1;width:230px;height:393px;margin:auto;padding:10px;border:7px solid #0a1715;border-radius:34px;background:#172522;box-shadow:20px 22px 0 rgba(0,0,0,.15)}
.phone:before{content:"";position:absolute;z-index:2;left:50%;top:7px;width:76px;height:16px;border-radius:0 0 10px 10px;background:#0a1715;transform:translateX(-50%)}
.phone-screen{height:100%;padding:27px 13px 13px;border-radius:22px;background:#d7eee4;color:var(--ink)}
.phone-screen .tiny-brand{font-size:10px;font-weight:900;color:var(--teal)}.phone-card-a{height:117px;margin:13px 0 10px;padding:15px;border-radius:13px;background:var(--teal);color:#fff}.phone-card-a b{display:block;margin-top:22px;font-size:20px}.phone-row{display:flex;gap:7px}.phone-row i{display:block;flex:1;height:66px;border-radius:10px;background:#fff}.phone-row i:nth-child(2){background:#f7d7bc}.phone-row i:nth-child(3){background:#85c5b2}
.download-copy{padding:54px 8%}.download-copy h2{margin:10px 0 15px;font-size:35px;line-height:1.25}.download-copy p{max-width:540px;color:#c6dad4}
.version-line{display:flex;flex-wrap:wrap;gap:8px;margin:22px 0}.version-line span{padding:5px 9px;border:1px solid rgba(255,255,255,.18);border-radius:7px;color:#d9ede7;font-size:12px}
.download-actions{display:flex;flex-wrap:wrap;gap:11px;margin:28px 0 18px}.qr-row{display:flex;align-items:center;gap:16px;font-size:13px;color:#bbd0c9}.qr{display:grid;place-items:center;width:70px;height:70px;background:repeating-linear-gradient(45deg,#fff 0 4px,#172622 4px 8px);border:4px solid #fff;color:transparent}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.step{position:relative;padding:29px 28px 28px;border-right:1px solid var(--line)}.step:last-child{border:0}.step-no{color:var(--orange);font-size:13px;font-weight:900}.step h3{margin:10px 0 7px;font-size:19px}.step p{margin:0;color:var(--ink-soft);font-size:14px}.step small{display:block;margin-top:11px;color:var(--muted)}
.guide-layout{display:grid;grid-template-columns:290px 1fr;gap:45px}.guide-art{margin-top:25px;padding:25px;border-radius:18px;background:var(--teal);color:#fff}.guide-art strong{display:block;font-size:22px;line-height:1.3}.guide-art p{margin:10px 0 0;color:#d8eee7;font-size:13px}
.guide-list{border-top:1px solid var(--line)}.guide-item{display:grid;grid-template-columns:54px 1fr auto;gap:20px;align-items:center;padding:22px 0;border-bottom:1px solid var(--line);transition:padding .2s}.guide-item:hover{padding-left:9px}.guide-num{color:var(--teal);font-size:22px;font-weight:900}.guide-item h3{margin:0;font-size:18px}.guide-item p{margin:4px 0 0;color:var(--muted);font-size:13px}.guide-meta{display:flex;flex-direction:column;align-items:end;gap:5px;color:var(--muted);font-size:12px}
.lobby-wrap{overflow:hidden;border:1px solid var(--line);border-radius:22px;background:#fff;box-shadow:var(--shadow)}
.lobby-top{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:20px 26px;border-bottom:1px solid var(--line)}.lobby-brand{font-weight:900;color:var(--teal)}.lobby-tabs{display:flex;gap:8px;overflow:auto}.lobby-tabs span{padding:6px 11px;border-radius:7px;background:var(--mint);font-size:13px;white-space:nowrap}.lobby-tabs span:first-child{background:var(--teal);color:#fff}
.lobby-body{display:grid;grid-template-columns:185px 1fr;min-height:270px}.lobby-side{padding:23px;border-right:1px solid var(--line);background:#f7faf8}.lobby-side b{display:block;margin-bottom:15px;font-size:13px}.lobby-side span{display:block;padding:8px 0;border-bottom:1px solid var(--line);color:var(--muted);font-size:13px}.lobby-content{padding:24px}.lobby-content h3{margin:0 0 16px;font-size:18px}.lobby-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:13px}.lobby-card{min-height:148px;padding:14px;border-radius:13px;background:var(--mint)}.lobby-card:nth-child(2){background:#f4e7da}.lobby-card:nth-child(3){background:#dbece4}.lobby-card:nth-child(4){background:#e5e7d7}.lobby-card i{display:block;width:42px;height:42px;margin-bottom:30px;border-radius:12px;background:rgba(13,118,103,.25)}.lobby-card b{display:block;font-size:13px}.lobby-card small{color:var(--muted);font-size:11px}
.news-layout{display:grid;grid-template-columns:1.02fr .98fr;gap:20px}.news-card{display:block;border:1px solid var(--line);border-radius:18px;background:#fff;overflow:hidden;transition:transform .2s,box-shadow .2s}.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.news-card:first-child{grid-row:span 4}.news-cover{height:108px;background:linear-gradient(135deg,#c1dfd4,#6bb69f);position:relative}.news-cover:after{content:"";position:absolute;right:18px;bottom:14px;width:51px;height:51px;border:8px solid rgba(255,255,255,.55);border-radius:15px}.news-card:first-child .news-cover{height:205px;background:linear-gradient(135deg,#0e675b,#91cdbb)}.news-card:nth-child(2) .news-cover{background:linear-gradient(135deg,#f1c99f,#d98248)}.news-card:nth-child(3) .news-cover{background:linear-gradient(135deg,#d9e7bc,#72a993)}
.news-text{padding:18px}.news-card h3{margin:7px 0 8px;font-size:18px;line-height:1.45}.news-card p{margin:0;color:var(--muted);font-size:13px;line-height:1.65}.news-card:first-child h3{font-size:23px}.news-meta{display:flex;gap:10px;align-items:center;color:var(--muted);font-size:12px}.news-side{display:grid;gap:13px}.empty-news{grid-column:1/-1;padding:52px 20px;border:1px dashed #b5d0c5;border-radius:18px;background:#fff;text-align:center;color:var(--muted)}.empty-icon{display:grid;place-items:center;width:45px;height:45px;margin:0 auto 12px;border-radius:50%;background:var(--mint);color:var(--teal);font-size:20px}
.update-band{display:grid;grid-template-columns:220px 1fr;border:1px solid #f0d4bd;border-radius:18px;background:#fff8f2;overflow:hidden}.update-title{padding:28px;background:#fff0e4}.update-title h2{margin:9px 0 0;font-size:25px;line-height:1.3}.update-list{display:grid;grid-template-columns:repeat(3,1fr)}.update-item{padding:25px;border-right:1px solid #f0d4bd}.update-item:last-child{border:0}.update-item b{display:block;margin:8px 0 3px;font-size:16px}.update-item p{margin:0;color:var(--ink-soft);font-size:13px}.update-date{font-size:12px;color:#af6840}
.safety-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:48px;align-items:center}.safety-copy h2{margin:8px 0 12px;font-size:31px;line-height:1.3}.safety-copy p{color:var(--ink-soft)}.safety-list{display:grid;grid-template-columns:repeat(2,1fr);gap:13px}.safety-item{display:flex;gap:14px;padding:19px;border:1px solid var(--line);border-radius:14px;background:#fff}.shield{display:grid;place-items:center;flex:0 0 38px;width:38px;height:38px;border-radius:10px;background:var(--mint);color:var(--teal);font-size:19px}.safety-item b{display:block;font-size:15px}.safety-item p{margin:3px 0 0;color:var(--muted);font-size:13px;line-height:1.55}
.feedback-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.feedback{padding:23px;border-top:3px solid var(--teal);border-radius:0 0 16px 16px;background:#fff;box-shadow:0 6px 18px rgba(24,50,44,.05)}.feedback p{margin:0 0 18px;color:var(--ink-soft)}.feedback-footer{display:flex;align-items:center;justify-content:space-between;font-size:13px}.feedback-footer b{font-size:14px}.stars{color:var(--orange);letter-spacing:2px}
.faq-grid{display:grid;grid-template-columns:320px 1fr;gap:50px}.faq-intro h2{margin:8px 0 12px;font-size:32px;line-height:1.3}.faq-intro p{color:var(--ink-soft)}.faq-list{border-top:1px solid var(--line)}.faq-item{border-bottom:1px solid var(--line)}.faq-question{width:100%;display:flex;justify-content:space-between;align-items:center;gap:20px;padding:20px 0;border:0;background:transparent;color:var(--ink);text-align:left;font-weight:800;font-size:16px}.faq-question i{font-style:normal;color:var(--teal);font-size:23px;transition:transform .25s}.faq-answer{display:none;padding:0 35px 20px 0;color:var(--ink-soft);font-size:14px}.faq-item.open .faq-answer{display:block}.faq-item.open .faq-question i{transform:rotate(45deg)}
.final-cta{position:relative;overflow:hidden;padding:49px;border-radius:23px;background:#dcefe6}.final-cta:after{content:"";position:absolute;right:-60px;top:-120px;width:330px;height:330px;border:38px solid rgba(13,118,103,.1);border-radius:50%}.final-grid{position:relative;z-index:1;display:grid;grid-template-columns:1fr auto;gap:40px;align-items:center}.final-cta h2{margin:7px 0 10px;font-size:33px;line-height:1.28}.final-cta p{max-width:680px;margin:0;color:var(--ink-soft)}.final-action{display:flex;align-items:center;gap:16px}.final-action .qr{width:68px;height:68px}
.footer{padding:62px 0 25px;background:var(--graphite);color:#e0eee9}.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr) .8fr;gap:30px}.footer .brand{color:#fff}.footer p{color:#a8c0b8;font-size:13px}.footer h3{margin:0 0 13px;color:#fff;font-size:14px}.footer-links{display:grid;gap:7px}.footer-links a{color:#a8c0b8;font-size:13px;transition:color .2s}.footer-links a:hover{color:#fff}.footer-qr{display:grid;place-items:center;width:74px;height:74px;background:repeating-linear-gradient(45deg,#fff 0 4px,#9fbbb1 4px 8px);border-radius:7px;color:transparent}.footer-bottom{display:flex;justify-content:space-between;gap:20px;margin-top:44px;padding-top:19px;border-top:1px solid rgba(255,255,255,.11);color:#8fa89f;font-size:12px}
@media(max-width:1024px){.nav a{padding:8px 8px;font-size:13px}.brand{min-width:190px;font-size:13px}.hero-grid{gap:30px}.section{padding:68px 0}.guide-layout,.channel-layout{gap:28px}.lobby-cards{grid-template-columns:repeat(2,1fr)}.download-copy{padding:42px 7%}}
@media(max-width:768px){.container{width:min(calc(100% - 32px),var(--container))}.header-inner{height:66px}.nav{display:none;position:absolute;top:66px;right:16px;left:16px;padding:10px;border:1px solid var(--line);border-radius:14px;background:#fff;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}.nav.show{display:flex}.nav a{padding:11px 13px}.header-actions .btn{display:none}.menu-toggle{display:block}.hero{padding:54px 0 55px;background:linear-gradient(155deg,#fbfaf6 0%,#fbfaf6 63%,#e6f3ed 63%)}.hero-grid,.download-grid,.news-layout,.safety-grid,.faq-grid{grid-template-columns:1fr}.hero-copy h1{font-size:42px}.preview-stage{min-height:330px;margin-top:5px}.browser-card{right:4%;width:330px}.quickbar{margin-top:-17px}.quickbar-grid{grid-template-columns:repeat(2,1fr)}.quick-link:nth-child(2){border-right:0}.quick-link{padding:15px;border-bottom:1px solid var(--line)}.quick-link:nth-child(3),.quick-link:nth-child(4){border-bottom:0}.showcase{grid-template-columns:1fr}.feature-game{min-height:310px}.channel-layout,.guide-layout{grid-template-columns:1fr}.title-column{position:static}.channel-grid{grid-template-columns:1fr 1fr}.download-visual{min-height:390px;padding:34px}.download-copy{padding:39px 28px}.steps{grid-template-columns:1fr}.step{border-right:0;border-bottom:1px solid var(--line)}.step:last-child{border-bottom:0}.lobby-body{grid-template-columns:1fr}.lobby-side{display:none}.news-card:first-child{grid-row:auto}.news-side{grid-template-columns:1fr 1fr}.update-band{grid-template-columns:1fr}.update-list{grid-template-columns:repeat(3,1fr)}.safety-grid{gap:25px}.feedback-grid{grid-template-columns:1fr}.faq-grid{gap:23px}.final-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){body{font-size:15px}.section{padding:53px 0}.section-head{display:block;margin-bottom:24px}.section-head h2,.title-column h2{font-size:27px}.section-head p{margin-top:12px}.brand{min-width:0;max-width:235px;font-size:12px}.hero-copy h1{font-size:35px}.hero-copy p{font-size:16px}.hero-actions{display:grid;grid-template-columns:1fr}.preview-stage{min-height:286px}.browser-card{top:15px;right:0;width:285px}.screen-main{min-height:183px}.screen-main strong{font-size:23px;margin-top:28px}.float-chip{padding:7px 9px;font-size:11px}.chip-one{left:0}.chip-two{bottom:4px}.chip-three{right:0;bottom:52px}.quick-link{gap:9px;padding:13px 10px}.quick-icon{width:32px;height:32px}.quick-link strong{font-size:13px}.quick-link span,.quick-arrow{display:none}.mini-games,.channel-grid,.safety-list{grid-template-columns:1fr}.feature-game{padding:26px;min-height:280px}.feature-game h3{font-size:27px}.arc{right:15px;top:75px;width:130px;height:130px}.channel-card{min-height:155px}.download-copy h2{font-size:28px}.download-actions{display:grid}.phone{transform:scale(.88);transform-origin:top center;margin-bottom:-44px}.guide-item{grid-template-columns:39px 1fr;gap:10px}.guide-meta{grid-column:2;align-items:start}.lobby-top{padding:16px}.lobby-cards{grid-template-columns:1fr 1fr}.lobby-card{min-height:120px}.news-side{grid-template-columns:1fr}.update-list{grid-template-columns:1fr}.update-item{border-right:0;border-bottom:1px solid #f0d4bd}.update-item:last-child{border-bottom:0}.final-cta{padding:31px 24px}.final-cta h2{font-size:27px}.final-action{align-items:stretch;flex-direction:column}.footer-grid{grid-template-columns:1fr}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:6px}}

/* roulang page: category1 */
:root{
      --ink:#172724;
      --ink-soft:#40514d;
      --muted:#71827d;
      --paper:#fbfaf6;
      --mint:#eef6f1;
      --mint-deep:#dcece3;
      --line:#dbe6df;
      --teal:#0d7667;
      --teal-dark:#075b51;
      --teal-light:#bce6d8;
      --orange:#d98248;
      --orange-bg:#fff1e7;
      --white:#fff;
      --graphite:#162622;
      --radius:18px;
      --radius-sm:12px;
      --shadow:0 14px 36px rgba(21,48,41,.09);
      --shadow-hover:0 18px 42px rgba(21,48,41,.16);
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.75}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,textarea{font:inherit}
    button{cursor:pointer}
    :focus-visible{outline:3px solid rgba(13,118,103,.3);outline-offset:3px}
    .container{width:min(calc(100% - 48px),var(--container));margin:0 auto}
    .section{padding:82px 0}
    .section-soft{background:var(--mint)}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--teal);font-size:13px;font-weight:800;letter-spacing:.08em}
    .eyebrow:before{content:"";width:26px;height:2px;background:var(--orange)}
    .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:32px}
    .section-head h2{margin:7px 0 0;font-size:32px;line-height:1.3;letter-spacing:-.035em}
    .section-head p{max-width:480px;margin:0;color:var(--ink-soft);font-size:15px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:47px;padding:0 20px;border:1px solid transparent;border-radius:10px;font-size:15px;font-weight:800;transition:transform .2s,box-shadow .2s,background .2s,color .2s,border-color .2s}
    .btn:hover{transform:translateY(-2px);box-shadow:0 9px 20px rgba(9,89,77,.17)}
    .btn-primary{background:var(--teal);color:#fff}
    .btn-primary:hover{background:var(--teal-dark);color:#fff}
    .btn-secondary{border-color:#b8d2c7;background:#fff;color:var(--teal-dark)}
    .btn-secondary:hover{background:var(--mint)}
    .tag{display:inline-flex;align-items:center;width:max-content;padding:4px 9px;border-radius:999px;background:var(--mint);color:var(--teal-dark);font-size:12px;font-weight:800;line-height:1.4}
    .tag.orange{background:var(--orange-bg);color:#aa5b2f}
    .site-header{position:sticky;top:0;z-index:30;border-bottom:1px solid rgba(219,230,223,.85);background:rgba(251,250,246,.94);backdrop-filter:blur(14px)}
    .header-inner{display:flex;align-items:center;justify-content:space-between;gap:22px;height:76px}
    .brand{display:flex;align-items:center;gap:10px;min-width:230px;font-size:15px;font-weight:900;letter-spacing:-.03em;line-height:1.25}
    .brand-mark{display:grid;place-items:center;flex:0 0 34px;width:34px;height:34px;border-radius:10px;background:var(--teal);color:#fff;font-size:14px;box-shadow:inset 0 -7px 0 rgba(0,0,0,.11)}
    .nav{display:flex;align-items:center;justify-content:center;gap:3px}
    .nav a{position:relative;padding:9px 12px;border-radius:8px;color:#4a5c56;font-size:14px;font-weight:700;white-space:nowrap;transition:color .2s,background .2s}
    .nav a:hover,.nav a.active{background:var(--mint);color:var(--teal-dark)}
    .nav a.active:after{position:absolute;right:12px;bottom:3px;left:12px;height:2px;border-radius:2px;background:var(--teal);content:""}
    .header-actions{display:flex;align-items:center;gap:10px}
    .header-actions .btn{min-height:40px;padding:0 15px}
    .menu-toggle{display:none;width:42px;height:40px;border:1px solid var(--line);border-radius:9px;background:#fff;color:var(--teal-dark)}
    .page-intro{position:relative;overflow:hidden;padding:54px 0 46px;background:linear-gradient(115deg,#f5f7f2 0%,#f5f7f2 61%,#e1f0e9 61%,#e1f0e9 100%)}
    .page-intro:after{position:absolute;right:-45px;bottom:-85px;width:270px;height:270px;border:1px solid rgba(13,118,103,.16);border-radius:50%;content:""}
    .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:9px;margin-bottom:25px;color:var(--muted);font-size:13px}
    .breadcrumb a{transition:color .2s}
    .breadcrumb a:hover{color:var(--teal)}
    .breadcrumb span:last-child{color:var(--ink-soft)}
    .intro-layout{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:60px;align-items:end}
    .intro-layout h1{max-width:710px;margin:10px 0 14px;font-size:clamp(38px,5vw,58px);line-height:1.16;letter-spacing:-.055em}
    .intro-layout p{max-width:710px;margin:0;color:var(--ink-soft);font-size:17px}
    .intro-stamp{padding:23px;border:1px solid #c5ddd2;border-radius:var(--radius);background:rgba(255,255,255,.72);box-shadow:var(--shadow)}
    .intro-stamp strong{display:block;margin:7px 0 5px;font-size:22px;letter-spacing:-.03em}
    .intro-stamp span{display:block;color:var(--muted);font-size:13px}
    .notice-strip{display:grid;grid-template-columns:1.1fr .9fr .9fr;overflow:hidden;border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:var(--shadow)}
    .notice-item{min-height:114px;padding:23px 25px;border-right:1px solid var(--line)}
    .notice-item:last-child{border-right:0}
    .notice-item small{display:block;margin-bottom:4px;color:var(--muted);font-size:12px;font-weight:700}
    .notice-item strong{display:block;font-size:16px;line-height:1.45}
    .notice-item p{margin:3px 0 0;color:var(--ink-soft);font-size:13px;line-height:1.6}
    .filter-bar{display:flex;flex-wrap:wrap;gap:10px;padding:13px;border:1px solid var(--line);border-radius:14px;background:#fff}
    .filter-chip{padding:9px 15px;border:1px solid transparent;border-radius:8px;background:transparent;color:var(--ink-soft);font-size:14px;font-weight:800;transition:background .2s,color .2s,border-color .2s}
    .filter-chip:hover,.filter-chip.active{border-color:#b9d8cc;background:var(--mint);color:var(--teal-dark)}
    .feature-grid{display:grid;grid-template-columns:1.25fr .9fr .9fr;gap:18px}
    .featured-card{position:relative;display:flex;min-height:285px;flex-direction:column;justify-content:flex-end;overflow:hidden;padding:26px;border-radius:var(--radius);background:#125d51;color:#fff;box-shadow:var(--shadow);isolation:isolate;transition:transform .25s,box-shadow .25s}
    .featured-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
    .featured-card:before{position:absolute;top:-60px;right:-45px;z-index:-1;width:240px;height:240px;border:28px solid rgba(255,255,255,.12);border-radius:45px;transform:rotate(23deg);content:""}
    .featured-card:after{position:absolute;right:24px;top:25px;z-index:-1;width:84px;height:84px;border-radius:50%;background:rgba(185,230,216,.24);box-shadow:-86px 104px 0 rgba(255,255,255,.08);content:""}
    .featured-card h3{margin:10px 0 7px;font-size:27px;line-height:1.2;letter-spacing:-.04em}
    .featured-card p{margin:0;max-width:370px;color:rgba(255,255,255,.8);font-size:14px;line-height:1.65}
    .feature-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
    .feature-meta span{padding:4px 8px;border-radius:6px;background:rgba(255,255,255,.15);font-size:12px;font-weight:700}
    .small-feature{position:relative;display:flex;min-height:285px;flex-direction:column;justify-content:flex-end;overflow:hidden;padding:22px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:0 10px 25px rgba(21,48,41,.06);transition:transform .25s,box-shadow .25s}
    .small-feature:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .small-feature .art{position:absolute;top:0;right:0;left:0;height:130px;background:linear-gradient(135deg,#dff1e9,#b8ddce)}
    .small-feature .art:after{position:absolute;top:26px;left:29px;width:82px;height:82px;border-radius:22px;background:var(--teal);box-shadow:70px 18px 0 rgba(255,255,255,.5);transform:rotate(-12deg);content:""}
    .small-feature:nth-child(3) .art{background:linear-gradient(135deg,#fff1e6,#f0c59e)}
    .small-feature:nth-child(3) .art:after{border-radius:50%;background:var(--orange);box-shadow:65px 12px 0 rgba(255,255,255,.6)}
    .small-feature h3{margin:14px 0 6px;font-size:20px;line-height:1.3}
    .small-feature p{margin:0;color:var(--ink-soft);font-size:13px;line-height:1.65}
    .content-layout{display:grid;grid-template-columns:250px minmax(0,1fr);gap:38px;align-items:start}
    .side-panel{position:sticky;top:100px;padding:23px;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
    .side-panel h2{margin:0 0 10px;font-size:22px;line-height:1.35}
    .side-panel p{margin:0 0 18px;color:var(--ink-soft);font-size:14px}
    .side-list{display:grid;gap:8px;margin:0;padding:0;list-style:none}
    .side-list li{display:flex;align-items:center;gap:9px;color:var(--ink-soft);font-size:13px}
    .side-list i{display:grid;place-items:center;width:20px;height:20px;border-radius:50%;background:var(--mint);color:var(--teal);font-size:11px;font-style:normal;font-weight:900}
    .trial-list{display:grid;gap:20px}
    .trial-row{display:grid;grid-template-columns:220px minmax(0,1fr);gap:25px;align-items:stretch;padding:16px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:0 8px 20px rgba(21,48,41,.04);transition:transform .2s,box-shadow .2s,border-color .2s}
    .trial-row:hover{transform:translateY(-3px);border-color:#b7d7ca;box-shadow:var(--shadow)}
    .trial-visual{position:relative;min-height:174px;overflow:hidden;border-radius:12px;background:linear-gradient(145deg,#164f46,#0c8a78)}
    .trial-visual:before{position:absolute;top:24px;left:25px;width:69px;height:69px;border:13px solid rgba(255,255,255,.24);border-radius:20px;transform:rotate(18deg);content:""}
    .trial-visual:after{position:absolute;right:17px;bottom:18px;width:98px;height:98px;border-radius:50%;background:rgba(184,229,215,.24);box-shadow:-51px -67px 0 rgba(255,255,255,.1);content:""}
    .trial-row:nth-child(2) .trial-visual,.trial-row:nth-child(5) .trial-visual{background:linear-gradient(145deg,#e9b07d,#d77c47)}
    .trial-row:nth-child(3) .trial-visual,.trial-row:nth-child(6) .trial-visual{background:linear-gradient(145deg,#264d59,#397e8a)}
    .trial-row:nth-child(4) .trial-visual{background:linear-gradient(145deg,#5b7965,#1b7569)}
    .trial-copy{padding:5px 5px 4px 0}
    .trial-copy h3{margin:8px 0 8px;font-size:22px;line-height:1.3;letter-spacing:-.025em}
    .trial-copy p{margin:0;color:var(--ink-soft);font-size:14px}
    .trial-info{display:flex;flex-wrap:wrap;gap:12px;margin-top:15px;color:var(--muted);font-size:12px;font-weight:700}
    .trial-info span{display:flex;align-items:center;gap:5px}
    .trial-info span:before{width:6px;height:6px;border-radius:50%;background:var(--teal-light);content:""}
    .list-more{display:flex;justify-content:center;margin-top:28px}
    .selection-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .selection-card{padding:23px 20px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;transition:transform .2s,box-shadow .2s}
    .selection-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
    .selection-icon{display:grid;place-items:center;width:42px;height:42px;margin-bottom:15px;border-radius:12px;background:var(--mint);color:var(--teal);font-size:19px;font-weight:900}
    .selection-card h3{margin:0 0 7px;font-size:17px}
    .selection-card p{margin:0;color:var(--ink-soft);font-size:13px;line-height:1.65}
    .timeline{position:relative;display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .timeline:before{position:absolute;top:31px;right:16%;left:16%;height:2px;background:#c9ddd4;content:""}
    .time-card{position:relative;padding:0 18px 20px;text-align:center}
    .time-number{display:grid;place-items:center;width:62px;height:62px;margin:0 auto 16px;border:6px solid var(--mint);border-radius:50%;background:var(--teal);color:#fff;font-size:19px;font-weight:900}
    .time-card h3{margin:0 0 6px;font-size:18px}
    .time-card p{margin:0;color:var(--ink-soft);font-size:14px}
    .experience-note{display:grid;grid-template-columns:1.05fr .95fr;overflow:hidden;border:1px solid #bcd7cb;border-radius:var(--radius);background:#fff}
    .experience-main{padding:34px;background:var(--graphite);color:#fff}
    .experience-main h2{margin:8px 0 12px;font-size:30px;line-height:1.3;letter-spacing:-.04em}
    .experience-main p{margin:0;color:#c9dad4;font-size:15px}
    .experience-main .tag{margin-top:20px;background:rgba(188,230,216,.16);color:#ceefe4}
    .experience-points{display:grid;gap:0;padding:16px 27px;background:#f7fbf8}
    .experience-points div{padding:16px 0;border-bottom:1px solid var(--line)}
    .experience-points div:last-child{border-bottom:0}
    .experience-points strong{display:block;font-size:15px}
    .experience-points span{display:block;margin-top:3px;color:var(--ink-soft);font-size:13px}
    .faq-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:54px;align-items:start}
    .faq-copy h2{margin:8px 0 12px;font-size:32px;line-height:1.3;letter-spacing:-.04em}
    .faq-copy p{margin:0;color:var(--ink-soft)}
    .faq-list{border-top:1px solid var(--line)}
    .faq-item{border-bottom:1px solid var(--line)}
    .faq-question{display:flex;align-items:center;justify-content:space-between;width:100%;padding:19px 2px;border:0;background:transparent;color:var(--ink);font-size:16px;font-weight:800;text-align:left}
    .faq-question b{flex:0 0 auto;margin-left:18px;color:var(--teal);font-size:23px;font-weight:400;transition:transform .2s}
    .faq-answer{display:none;padding:0 42px 19px 2px;color:var(--ink-soft);font-size:14px}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-question b{transform:rotate(45deg)}
    .support-band{display:flex;align-items:center;justify-content:space-between;gap:28px;padding:30px 34px;border-radius:var(--radius);background:#dcefe6}
    .support-band h2{margin:0 0 5px;font-size:25px;line-height:1.3;letter-spacing:-.035em}
    .support-band p{margin:0;color:var(--ink-soft);font-size:14px}
    .footer{padding:58px 0 22px;background:var(--graphite);color:#d8e3de}
    .footer-grid{display:grid;grid-template-columns:1.55fr repeat(4,1fr);gap:30px;padding-bottom:40px}
    .footer .brand{min-width:0;color:#fff}
    .footer .brand-mark{background:#1b8d7d}
    .footer p{margin:14px 0 0;color:#aebeb8;font-size:13px;line-height:1.7}
    .footer h3{margin:4px 0 13px;color:#fff;font-size:14px}
    .footer-links{display:grid;gap:7px}
    .footer-links a{color:#b8c8c2;font-size:13px;transition:color .2s,transform .2s}
    .footer-links a:hover{color:#fff;transform:translateX(2px)}
    .footer-qr{display:grid;place-items:center;width:70px;height:70px;border:1px solid rgba(255,255,255,.28);background:repeating-linear-gradient(45deg,rgba(255,255,255,.12),rgba(255,255,255,.12) 4px,transparent 4px,transparent 8px);color:#fff;font-size:11px;font-weight:800}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;padding-top:19px;border-top:1px solid rgba(255,255,255,.13);color:#93a8a0;font-size:12px}
    @media (max-width:1024px){
      .brand{min-width:190px;font-size:14px}
      .nav a{padding:9px 8px;font-size:13px}
      .intro-layout{gap:30px}
      .content-layout{grid-template-columns:210px minmax(0,1fr);gap:24px}
      .selection-grid{grid-template-columns:repeat(2,1fr)}
      .footer-grid{grid-template-columns:1.4fr repeat(2,1fr)}
    }
    @media (max-width:768px){
      .container{width:min(calc(100% - 32px),var(--container))}
      .section{padding:58px 0}
      .header-inner{height:68px}
      .brand{min-width:0;max-width:245px}
      .nav{position:absolute;top:68px;right:16px;left:16px;display:none;align-items:stretch;flex-direction:column;padding:10px;border:1px solid var(--line);border-radius:14px;background:#fff;box-shadow:var(--shadow)}
      .nav.open{display:flex}
      .nav a{padding:11px 12px}
      .nav a.active:after{display:none}
      .header-actions .btn{display:none}
      .menu-toggle{display:block}
      .intro-layout{grid-template-columns:1fr}
      .intro-stamp{max-width:330px}
      .notice-strip{grid-template-columns:1fr}
      .notice-item{min-height:auto;border-right:0;border-bottom:1px solid var(--line)}
      .notice-item:last-child{border-bottom:0}
      .section-head{display:block;margin-bottom:24px}
      .section-head p{margin-top:10px}
      .feature-grid{grid-template-columns:1fr 1fr}
      .featured-card{grid-column:1/-1;min-height:260px}
      .content-layout{grid-template-columns:1fr}
      .side-panel{position:static}
      .trial-row{grid-template-columns:180px minmax(0,1fr);gap:18px}
      .faq-layout,.experience-note{grid-template-columns:1fr;gap:30px}
      .timeline:before{display:none}
      .support-band{align-items:flex-start;flex-direction:column;padding:28px}
    }
    @media (max-width:520px){
      body{font-size:15px}
      .brand{font-size:13px}
      .brand-mark{width:32px;height:32px;flex-basis:32px}
      .page-intro{padding:38px 0}
      .intro-layout h1{font-size:37px}
      .intro-layout p{font-size:15px}
      .section-head h2,.faq-copy h2{font-size:27px}
      .filter-bar{gap:7px;padding:9px}
      .filter-chip{padding:8px 10px;font-size:13px}
      .feature-grid,.selection-grid{grid-template-columns:1fr}
      .featured-card,.small-feature{min-height:240px}
      .trial-row{grid-template-columns:1fr;padding:12px}
      .trial-visual{min-height:145px}
      .trial-copy{padding:6px 4px 8px}
      .trial-copy h3{font-size:20px}
      .timeline{grid-template-columns:1fr;gap:22px}
      .time-card{display:grid;grid-template-columns:62px 1fr;gap:0 16px;padding:0;text-align:left}
      .time-number{grid-row:span 2;margin:0}
      .time-card h3{align-self:end}
      .time-card p{align-self:start}
      .experience-main{padding:27px}
      .experience-main h2{font-size:26px}
      .experience-points{padding:12px 22px}
      .support-band h2{font-size:22px}
      .support-band .btn{width:100%}
      .footer-grid{grid-template-columns:1fr 1fr;gap:27px 18px}
      .footer-grid>div:first-child{grid-column:1/-1}
      .footer-bottom{align-items:flex-start;flex-direction:column;gap:3px}
    }

/* roulang page: article */
:root{
  --ink:#172724;
  --ink-soft:#40514d;
  --muted:#71827d;
  --paper:#fbfaf6;
  --mint:#eef6f1;
  --mint-deep:#dcece3;
  --line:#dbe6df;
  --teal:#0d7667;
  --teal-dark:#075b51;
  --teal-light:#bce6d8;
  --orange:#d98248;
  --orange-bg:#fff1e7;
  --white:#fff;
  --graphite:#162622;
  --radius:18px;
  --radius-sm:12px;
  --shadow:0 14px 36px rgba(21,48,41,.09);
  --shadow-hover:0 18px 42px rgba(21,48,41,.16);
  --container:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.8}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input,textarea{font:inherit}
button{cursor:pointer}
.container{width:min(calc(100% - 48px),var(--container));margin:0 auto}
.section{padding:72px 0}
.section-soft{background:var(--mint)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--teal);font-size:13px;font-weight:800;letter-spacing:.08em}
.eyebrow:before{content:"";width:26px;height:2px;background:var(--orange)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:30px}
.section-head h2{margin:7px 0 0;font-size:30px;line-height:1.3;letter-spacing:-.03em}
.section-head p{max-width:480px;margin:0;color:var(--ink-soft);font-size:15px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:48px;padding:0 20px;border:1px solid transparent;border-radius:10px;font-size:15px;font-weight:800;transition:transform .2s,box-shadow .2s,background .2s,color .2s,border-color .2s}
.btn:hover{transform:translateY(-2px);box-shadow:0 9px 20px rgba(9,89,77,.18)}
.btn:focus,.nav a:focus,.faq-trigger:focus{outline:3px solid rgba(13,118,103,.22);outline-offset:3px}
.btn-primary{background:var(--teal);color:#fff}
.btn-primary:hover{background:var(--teal-dark);color:#fff}
.btn-secondary{border-color:#b8d2c7;background:#fff;color:var(--teal-dark)}
.btn-secondary:hover{background:var(--mint);color:var(--teal-dark)}
.tag{display:inline-flex;align-items:center;padding:4px 9px;border-radius:999px;background:var(--mint);color:var(--teal-dark);font-size:12px;font-weight:800}
.tag.orange{background:var(--orange-bg);color:#a85a2d}
.site-header{position:sticky;z-index:30;top:0;border-bottom:1px solid rgba(219,230,223,.8);background:rgba(251,250,246,.92);backdrop-filter:blur(14px)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:22px;height:76px}
.brand{display:flex;align-items:center;gap:10px;min-width:230px;font-size:15px;font-weight:900;line-height:1.25;letter-spacing:-.03em}
.brand-mark{display:grid;flex:0 0 34px;place-items:center;width:34px;height:34px;border-radius:10px;background:var(--teal);color:#fff;font-size:14px;box-shadow:inset 0 -7px 0 rgba(0,0,0,.11)}
.nav{display:flex;align-items:center;justify-content:center;gap:3px}
.nav a{position:relative;padding:9px 12px;border-radius:8px;color:#4a5c56;font-size:14px;font-weight:700;white-space:nowrap;transition:color .2s,background .2s}
.nav a:hover,.nav a.active{background:var(--mint);color:var(--teal-dark)}
.nav a.active:after{position:absolute;right:12px;bottom:3px;left:12px;height:2px;border-radius:2px;background:var(--teal);content:""}
.header-actions{display:flex;align-items:center;gap:10px}
.header-actions .btn{min-height:40px;padding:0 15px}
.menu-toggle{display:none;width:42px;height:40px;border:1px solid var(--line);border-radius:9px;background:#fff;color:var(--teal-dark)}
.article-hero{position:relative;overflow:hidden;padding:52px 0 46px;background:linear-gradient(118deg,#f7faf7 0%,#f7faf7 62%,#e0f0e8 62%,#e0f0e8 100%);border-bottom:1px solid var(--line)}
.article-hero:after{position:absolute;right:-90px;bottom:-180px;width:420px;height:420px;border:1px solid rgba(13,118,103,.16);border-radius:50%;content:""}
.breadcrumb-wrap{padding:20px 0 0}
.breadcrumb{display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0;list-style:none;color:var(--muted);font-size:13px}
.breadcrumb li+li:before{margin-right:8px;color:#a4b4ae;content:"/"}
.breadcrumb a{transition:color .2s}
.breadcrumb a:hover{color:var(--teal)}
.article-hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1fr) 292px;gap:46px;align-items:end}
.article-hero h1{max-width:790px;margin:12px 0 16px;font-size:clamp(34px,4.4vw,54px);font-weight:850;line-height:1.18;letter-spacing:-.05em}
.article-intro{max-width:760px;margin:0;color:var(--ink-soft);font-size:17px}
.article-meta{display:flex;flex-wrap:wrap;gap:10px 18px;margin-top:23px;color:var(--muted);font-size:13px}
.article-meta span{display:inline-flex;align-items:center;gap:6px}
.cover-note{position:relative;overflow:hidden;min-height:216px;padding:26px;border-radius:var(--radius);background:var(--graphite);color:#e4f4ed;box-shadow:var(--shadow)}
.cover-note:before{position:absolute;right:-16px;bottom:-35px;color:rgba(255,255,255,.06);font-size:110px;font-weight:900;line-height:1;content:"PG"}
.cover-symbol{display:grid;place-items:center;width:48px;height:48px;border-radius:14px;background:var(--teal);font-size:22px;font-weight:900}
.cover-note strong{position:relative;display:block;margin-top:30px;font-size:22px;line-height:1.35}
.cover-note p{position:relative;margin:8px 0 0;color:#b8d6cb;font-size:13px;line-height:1.65}
.summary-box{display:grid;grid-template-columns:86px 1fr auto;gap:24px;align-items:center;padding:25px 28px;border:1px solid #cde3d8;border-radius:var(--radius);background:#f5fbf7}
.summary-icon{display:grid;place-items:center;width:62px;height:62px;border-radius:16px;background:var(--teal);color:#fff;font-size:26px;font-weight:900}
.summary-box h2{margin:0 0 6px;font-size:19px;font-weight:850}
.summary-box p{margin:0;color:var(--ink-soft);font-size:15px}
.summary-date{padding-left:22px;border-left:1px solid #cfe1d8;color:var(--muted);font-size:13px;white-space:nowrap}
.reading-layout{display:grid;grid-template-columns:230px minmax(0,760px);justify-content:center;gap:48px;align-items:start}
.toc-card{position:sticky;top:100px;padding:19px;border:1px solid var(--line);border-radius:var(--radius-sm);background:#fff}
.toc-card h2{margin:0 0 12px;font-size:15px;font-weight:850}
.toc-card a{display:block;padding:7px 8px;border-left:2px solid transparent;color:var(--ink-soft);font-size:13px;line-height:1.55;transition:background .2s,color .2s,border-color .2s}
.toc-card a:hover{border-left-color:var(--teal);background:var(--mint);color:var(--teal-dark)}
.article-body{min-width:0;padding:42px 48px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:0 7px 24px rgba(21,48,41,.04)}
.article-body>*:first-child{margin-top:0}
.article-body h2{margin:42px 0 16px;padding-top:4px;font-size:27px;line-height:1.35;letter-spacing:-.03em}
.article-body h3{margin:28px 0 12px;color:var(--teal-dark);font-size:20px;line-height:1.45}
.article-body p{margin:0 0 18px;color:#354944}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:1.45em;color:#354944}
.article-body li{margin:7px 0}
.article-body blockquote{margin:25px 0;padding:17px 20px;border-left:4px solid var(--teal);border-radius:0 12px 12px 0;background:var(--mint);color:var(--ink-soft)}
.article-body table{width:100%;margin:24px 0;border-collapse:collapse;font-size:14px}
.article-body th,.article-body td{padding:12px;border:1px solid var(--line);text-align:left}
.article-body th{background:var(--mint);color:var(--teal-dark)}
.article-body img{margin:24px auto;border:1px solid var(--line);border-radius:12px}
.article-body a{border-bottom:1px solid var(--teal-light);color:var(--teal-dark);font-weight:700}
.empty-article{text-align:center;padding:44px 14px}
.empty-article h2{margin:0 0 12px;padding:0;font-size:26px}
.empty-article p{margin-bottom:22px}
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.step-card{position:relative;overflow:hidden;min-height:220px;padding:24px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:0 8px 24px rgba(21,48,41,.045);transition:transform .2s,box-shadow .2s}
.step-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.step-number{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:10px;background:var(--mint-deep);color:var(--teal-dark);font-weight:900}
.step-card h3{margin:19px 0 8px;font-size:19px;font-weight:850}
.step-card p{margin:0;color:var(--ink-soft);font-size:14px}
.step-shot{height:49px;margin-top:21px;border:1px solid #bbd7ca;border-radius:9px;background:linear-gradient(135deg,#e3f1ea 0 42%,#f9fcfa 42% 58%,#d6e9df 58%);opacity:.9}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.related-card{display:flex;flex-direction:column;min-height:242px;padding:23px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;transition:transform .2s,box-shadow .2s,border-color .2s}
.related-card:hover{transform:translateY(-3px);border-color:#b9d8ca;box-shadow:var(--shadow)}
.related-card h3{margin:15px 0 10px;font-size:18px;line-height:1.48;font-weight:850}
.related-card p{margin:0;color:var(--ink-soft);font-size:14px;line-height:1.7}
.card-meta{margin-top:auto;padding-top:17px;color:var(--muted);font-size:12px}
.support-panel{display:grid;grid-template-columns:1fr auto;gap:30px;align-items:center;padding:34px 38px;border-radius:var(--radius);background:var(--graphite);color:#fff}
.support-panel h2{margin:0 0 8px;font-size:28px;font-weight:850}
.support-panel p{max-width:670px;margin:0;color:#b9d4ca;font-size:15px}
.support-actions{display:flex;flex-wrap:wrap;gap:10px;justify-content:flex-end}
.responsibility{display:flex;align-items:flex-start;gap:17px;padding:23px 26px;border:1px solid #f0d2ba;border-radius:var(--radius-sm);background:var(--orange-bg)}
.responsibility-icon{display:grid;flex:0 0 38px;place-items:center;width:38px;height:38px;border-radius:11px;background:#f4c39c;color:#754321;font-weight:900}
.responsibility h2{margin:0 0 4px;color:#71411f;font-size:17px;font-weight:850}
.responsibility p{margin:0;color:#805632;font-size:14px}
.footer{padding:64px 0 24px;background:var(--graphite);color:#dceae4}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr .8fr;gap:32px;padding-bottom:42px}
.footer .brand{min-width:0;color:#fff}
.footer .brand-mark{background:#1b8d7b}
.footer p{margin:14px 0 0;color:#a9c2b8;font-size:13px;line-height:1.75}
.footer h3{margin:4px 0 13px;color:#fff;font-size:14px;font-weight:850}
.footer-links{display:flex;flex-direction:column;gap:7px}
.footer-links a{color:#b8d0c6;font-size:13px;transition:color .2s,transform .2s}
.footer-links a:hover{color:#fff;transform:translateX(2px)}
.footer-qr{display:grid;place-items:center;width:72px;height:72px;border:4px solid #e2eee8;background:repeating-linear-gradient(45deg,#e8f2ed 0 3px,#7aa79a 3px 6px);color:var(--graphite);font-size:11px;font-weight:900}
.footer-bottom{display:flex;justify-content:space-between;gap:18px;padding-top:20px;border-top:1px solid rgba(210,232,221,.16);color:#94afa4;font-size:12px}
@media (max-width:1024px){
  .nav a{padding:8px 8px;font-size:13px}
  .brand{min-width:190px;font-size:14px}
  .article-hero-grid{grid-template-columns:1fr 250px;gap:28px}
  .reading-layout{grid-template-columns:190px minmax(0,1fr);gap:28px}
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr}
}
@media (max-width:768px){
  .container{width:min(calc(100% - 32px),var(--container))}
  .header-inner{height:68px}
  .header-actions .btn{display:none}
  .menu-toggle{display:inline-grid;place-items:center}
  .nav{position:absolute;top:68px;right:16px;left:16px;display:none;align-items:stretch;flex-direction:column;padding:12px;border:1px solid var(--line);border-radius:14px;background:#fff;box-shadow:var(--shadow)}
  .nav.open{display:flex}
  .nav a{width:100%;padding:10px 12px}
  .nav a.active:after{display:none}
  .brand{min-width:0;font-size:13px}
  .article-hero{padding:35px 0 38px}
  .article-hero-grid{grid-template-columns:1fr}
  .cover-note{min-height:150px}
  .article-hero h1{font-size:37px}
  .summary-box{grid-template-columns:64px 1fr;gap:16px;padding:21px}
  .summary-date{grid-column:2;padding:0;border:0}
  .reading-layout{grid-template-columns:1fr}
  .toc-card{position:relative;top:auto}
  .toc-card nav{display:grid;grid-template-columns:1fr 1fr}
  .article-body{padding:30px 25px}
  .steps-grid,.related-grid{grid-template-columns:1fr}
  .support-panel{grid-template-columns:1fr;padding:29px}
  .support-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:520px){
  body{font-size:15px}
  .container{width:calc(100% - 28px)}
  .section{padding:52px 0}
  .section-head{display:block;margin-bottom:24px}
  .section-head h2{font-size:26px}
  .section-head p{margin-top:11px}
  .brand{max-width:242px}
  .brand-mark{width:32px;height:32px;flex-basis:32px}
  .article-hero h1{font-size:31px}
  .article-intro{font-size:15px}
  .article-meta{gap:7px 13px}
  .breadcrumb-wrap{padding-top:15px}
  .summary-box{display:block}
  .summary-icon{margin-bottom:13px}
  .summary-date{margin-top:11px}
  .toc-card nav{grid-template-columns:1fr}
  .article-body{padding:25px 19px}
  .article-body h2{font-size:23px}
  .article-body h3{font-size:18px}
  .support-panel h2{font-size:24px}
  .support-actions{display:grid;grid-template-columns:1fr;width:100%}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .footer-bottom{display:block;line-height:2}
}

/* roulang page: category2 */
:root{
  --ink:#172724;--ink-soft:#40514d;--muted:#71827d;--paper:#fbfaf6;--mint:#eef6f1;
  --mint-deep:#dcece3;--line:#dbe6df;--teal:#0d7667;--teal-dark:#075b51;
  --teal-light:#bce6d8;--orange:#d98248;--orange-bg:#fff1e7;--white:#fff;
  --graphite:#162622;--radius:18px;--radius-sm:12px;--shadow:0 14px 36px rgba(21,48,41,.09);
  --shadow-hover:0 18px 42px rgba(21,48,41,.16);--container:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.75}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button,input,textarea{font:inherit}
button{cursor:pointer}
.container{width:min(calc(100% - 48px),var(--container));margin:0 auto}
.section{padding:74px 0}
.section-soft{background:var(--mint)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--teal);font-size:13px;font-weight:800;letter-spacing:.08em}
.eyebrow:before{content:"";width:26px;height:2px;background:var(--orange)}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:26px;margin-bottom:30px}
.section-head h2{margin:7px 0 0;font-size:31px;line-height:1.32;letter-spacing:-.035em}
.section-head p{max-width:480px;margin:0;color:var(--ink-soft);font-size:15px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:48px;padding:0 20px;border:1px solid transparent;border-radius:10px;font-size:15px;font-weight:800;transition:transform .2s,box-shadow .2s,background .2s,color .2s,border-color .2s}
.btn:hover{transform:translateY(-2px);box-shadow:0 9px 20px rgba(9,89,77,.18)}
.btn:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid rgba(13,118,103,.25);outline-offset:3px}
.btn-primary{background:var(--teal);color:#fff}
.btn-primary:hover{background:var(--teal-dark)}
.btn-secondary{background:#fff;border-color:#b8d2c7;color:var(--teal-dark)}
.btn-secondary:hover{background:var(--mint)}
.tag{display:inline-flex;align-items:center;padding:4px 9px;border-radius:999px;background:var(--mint);color:var(--teal-dark);font-size:12px;font-weight:800}
.tag.orange{background:var(--orange-bg);color:#ab5a2c}
.site-header{position:sticky;z-index:30;top:0;border-bottom:1px solid rgba(219,230,223,.8);background:rgba(251,250,246,.92);backdrop-filter:blur(14px)}
.header-inner{height:76px;display:flex;align-items:center;justify-content:space-between;gap:22px}
.brand{display:flex;align-items:center;gap:10px;min-width:230px;font-size:15px;font-weight:900;letter-spacing:-.03em;line-height:1.25}
.brand-mark{display:grid;place-items:center;width:34px;height:34px;flex:0 0 34px;border-radius:10px;background:var(--teal);color:#fff;font-size:14px;box-shadow:inset 0 -7px 0 rgba(0,0,0,.11)}
.nav{display:flex;align-items:center;justify-content:center;gap:3px}
.nav a{position:relative;padding:9px 12px;border-radius:8px;color:#4a5c56;font-size:14px;font-weight:700;white-space:nowrap;transition:color .2s,background .2s}
.nav a:hover,.nav a.active{background:var(--mint);color:var(--teal-dark)}
.nav a.active:after{content:"";position:absolute;right:12px;bottom:3px;left:12px;height:2px;border-radius:2px;background:var(--teal)}
.header-actions{display:flex;align-items:center;gap:10px}
.header-actions .btn{min-height:40px;padding:0 15px}
.menu-toggle{display:none;width:42px;height:40px;border:1px solid var(--line);border-radius:9px;background:#fff;color:var(--teal-dark)}
.page-intro{position:relative;overflow:hidden;padding:58px 0 52px;background:linear-gradient(115deg,#fbfaf6 0%,#fbfaf6 66%,#e7f2ec 66%,#e7f2ec 100%);border-bottom:1px solid var(--line)}
.page-intro:after{content:"";position:absolute;right:8%;bottom:-110px;width:330px;height:220px;border:1px solid rgba(13,118,103,.17);border-radius:50%;transform:rotate(-24deg)}
.breadcrumb{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:9px;color:var(--muted);font-size:13px}
.breadcrumb a{color:var(--teal-dark);font-weight:700}
.breadcrumb span:last-child{color:var(--ink-soft)}
.intro-grid{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:45px;align-items:end;margin-top:23px}
.intro-grid h1{max-width:710px;margin:9px 0 12px;font-size:clamp(38px,5vw,57px);line-height:1.16;letter-spacing:-.055em}
.intro-grid p{max-width:700px;margin:0;color:var(--ink-soft);font-size:17px}
.intro-panel{padding:21px;border:1px solid #cce0d5;border-radius:var(--radius);background:rgba(255,255,255,.86);box-shadow:var(--shadow)}
.intro-panel strong{display:block;margin-bottom:9px;font-size:15px}
.intro-panel div{display:flex;justify-content:space-between;padding:7px 0;border-top:1px solid var(--line);color:var(--muted);font-size:13px}
.intro-panel b{color:var(--teal-dark)}
.path-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}
.path-card{position:relative;min-height:190px;padding:25px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:0 8px 22px rgba(21,48,41,.045);transition:transform .2s,box-shadow .2s}
.path-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.step-number{display:grid;place-items:center;width:39px;height:39px;margin-bottom:19px;border-radius:11px;background:var(--teal);color:#fff;font-weight:900}
.path-card h3{margin:0 0 8px;font-size:19px}
.path-card p{margin:0;color:var(--ink-soft);font-size:14px}
.path-card:not(:last-child):after{content:"→";position:absolute;right:-25px;top:79px;color:var(--teal);font-size:22px;font-weight:800}
.anchor-row{display:flex;flex-wrap:wrap;gap:11px}
.anchor-row a{display:inline-flex;align-items:center;gap:7px;padding:12px 15px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink-soft);font-size:14px;font-weight:800;transition:border-color .2s,background .2s,color .2s,transform .2s}
.anchor-row a:before{content:"+";color:var(--teal);font-size:18px}
.anchor-row a:hover{transform:translateY(-2px);border-color:#9fcabc;background:var(--mint);color:var(--teal-dark)}
.guide-layout{display:grid;grid-template-columns:250px minmax(0,1fr);gap:35px;align-items:start}
.guide-side{position:sticky;top:100px;padding:23px;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
.guide-side h3{margin:0 0 14px;font-size:18px}
.guide-side p{margin:0 0 18px;color:var(--ink-soft);font-size:14px}
.guide-side ul{display:grid;gap:10px;margin:0;padding:0;list-style:none}
.guide-side li{padding-bottom:10px;border-bottom:1px solid var(--line);color:var(--muted);font-size:13px}
.guide-list{display:grid;gap:14px}
.guide-item{display:grid;grid-template-columns:62px minmax(0,1fr) auto;gap:19px;align-items:center;padding:22px 23px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;transition:transform .2s,box-shadow .2s,border-color .2s}
.guide-item:hover{transform:translateY(-3px);border-color:#aad1c1;box-shadow:var(--shadow)}
.guide-no{display:grid;place-items:center;width:47px;height:47px;border-radius:14px;background:var(--mint);color:var(--teal-dark);font-size:16px;font-weight:900}
.guide-copy h3{margin:0 0 6px;font-size:19px;line-height:1.42}
.guide-copy p{margin:0;color:var(--ink-soft);font-size:14px}
.meta-line{display:flex;flex-wrap:wrap;gap:9px;margin-top:9px;color:var(--muted);font-size:12px}
.article-link{color:var(--teal-dark);font-size:14px;font-weight:900;white-space:nowrap}
.article-link:hover{color:var(--orange)}
.demo-grid{display:grid;grid-template-columns:.92fr 1.08fr;gap:38px;align-items:center}
.demo-visual{position:relative;min-height:355px;padding:24px;border-radius:24px;background:var(--graphite);box-shadow:var(--shadow)}
.demo-phone{position:absolute;left:50%;top:27px;width:205px;padding:9px;border:6px solid #0c1714;border-radius:31px;background:#f7faf8;box-shadow:0 22px 34px rgba(0,0,0,.25);transform:translateX(-50%)}
.phone-notch{width:73px;height:13px;margin:0 auto 10px;border-radius:0 0 10px 10px;background:#0c1714}
.phone-head{padding:8px 10px;border-radius:10px;background:var(--teal);color:#fff;font-size:11px;font-weight:800}
.phone-block{height:79px;margin-top:9px;border-radius:10px;background:linear-gradient(135deg,#c8ebdf,#78bba7)}
.phone-lines{display:grid;gap:7px;margin-top:10px}
.phone-lines i{height:8px;border-radius:8px;background:#dce9e2}
.phone-lines i:nth-child(2){width:72%}
.phone-lines i:nth-child(3){width:83%}
.visual-float{position:absolute;padding:9px 12px;border-radius:10px;background:#fff;color:var(--teal-dark);box-shadow:0 9px 22px rgba(0,0,0,.18);font-size:12px;font-weight:800}
.visual-float.one{left:20px;top:70px}.visual-float.two{right:18px;bottom:52px}
.demo-copy h2{margin:8px 0 15px;font-size:31px;line-height:1.3;letter-spacing:-.035em}
.demo-copy>p{margin:0;color:var(--ink-soft)}
.check-list{display:grid;gap:14px;margin:24px 0 0;padding:0;list-style:none}
.check-list li{display:flex;gap:12px;align-items:flex-start;color:var(--ink-soft);font-size:14px}
.check-list b{display:grid;place-items:center;flex:0 0 25px;width:25px;height:25px;border-radius:8px;background:var(--teal);color:#fff;font-size:13px}
.notice-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}
.notice-card{padding:23px 20px;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
.notice-icon{display:grid;place-items:center;width:42px;height:42px;margin-bottom:15px;border-radius:12px;background:var(--mint);color:var(--teal-dark);font-size:19px;font-weight:900}
.notice-card h3{margin:0 0 7px;font-size:17px}
.notice-card p{margin:0;color:var(--ink-soft);font-size:13px}
.faq-wrap{display:grid;grid-template-columns:.72fr 1.28fr;gap:55px;align-items:start}
.faq-lead h2{margin:8px 0 13px;font-size:32px;line-height:1.3;letter-spacing:-.04em}
.faq-lead p{margin:0;color:var(--ink-soft)}
.faq-list{display:grid;gap:10px}
.faq-item{overflow:hidden;border:1px solid var(--line);border-radius:var(--radius-sm);background:#fff}
.faq-question{display:flex;width:100%;align-items:center;justify-content:space-between;gap:20px;padding:17px 19px;border:0;background:#fff;color:var(--ink);font-weight:800;text-align:left}
.faq-question span:last-child{color:var(--teal);font-size:22px;line-height:1;transition:transform .25s}
.faq-item.active .faq-question span:last-child{transform:rotate(45deg)}
.faq-answer{display:none;padding:0 19px 18px;color:var(--ink-soft);font-size:14px}
.faq-item.active .faq-answer{display:block;animation:reveal .25s ease}
@keyframes reveal{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}
.list-footer{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-top:24px;padding:20px 23px;border-top:1px solid var(--line);background:var(--mint)}
.list-footer p{margin:0;color:var(--ink-soft);font-size:14px}
.final-band{padding:42px;border:1px solid #cae0d4;border-radius:22px;background:linear-gradient(110deg,#e1f1e9,#f7fbf8)}
.final-band h2{margin:7px 0 10px;font-size:29px;line-height:1.35}
.final-band p{max-width:730px;margin:0;color:var(--ink-soft)}
.final-row{display:flex;align-items:center;justify-content:space-between;gap:30px}
.footer{padding:62px 0 22px;background:var(--graphite);color:#dbe7e1}
.footer-grid{display:grid;grid-template-columns:1.5fr repeat(4,1fr);gap:34px;padding-bottom:40px}
.footer .brand{color:#fff;min-width:0}
.footer p{margin:15px 0 0;color:#a9beb5;font-size:13px;line-height:1.7}
.footer h3{margin:0 0 13px;color:#fff;font-size:14px}
.footer-links{display:grid;gap:8px}
.footer-links a{color:#b9cac3;font-size:13px;transition:color .2s}
.footer-links a:hover{color:#8de0ca}
.footer-qr{display:grid;place-items:center;width:66px;height:66px;border:1px dashed #6b8d82;border-radius:8px;background:#eef6f1;color:var(--teal-dark);font-size:11px;font-weight:800}
.footer-bottom{display:flex;justify-content:space-between;gap:15px;padding-top:20px;border-top:1px solid rgba(205,231,220,.16);color:#9bb0a7;font-size:12px}
@media (max-width:1024px){
  .brand{min-width:200px;font-size:13px}.nav a{padding:8px 8px;font-size:13px}.header-actions .btn{padding:0 11px}
  .intro-grid{grid-template-columns:1fr 270px}.notice-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:768px){
  .container{width:min(calc(100% - 32px),var(--container))}.section{padding:56px 0}.site-header{backdrop-filter:none}
  .header-inner{height:67px}.nav{position:absolute;top:67px;left:0;right:0;display:none;flex-direction:column;align-items:stretch;padding:13px 16px 18px;border-bottom:1px solid var(--line);background:var(--paper);box-shadow:var(--shadow)}
  .nav.open{display:flex}.nav a{padding:11px 13px}.nav a.active:after{display:none}.header-actions .btn{display:none}.menu-toggle{display:grid;place-items:center}
  .intro-grid,.guide-layout,.demo-grid,.faq-wrap{grid-template-columns:1fr;gap:27px}.intro-panel{max-width:460px}.path-grid{grid-template-columns:1fr}.path-card:not(:last-child):after{right:auto;left:28px;top:auto;bottom:-29px;transform:rotate(90deg)}
  .guide-side{position:static}.guide-item{grid-template-columns:53px minmax(0,1fr)}.guide-item .article-link{grid-column:2}.section-head{display:block}.section-head p{margin-top:12px}.footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:520px){
  body{font-size:15px}.section{padding:46px 0}.brand{min-width:0;max-width:245px}.brand span:last-child{font-size:12px}.page-intro{padding:42px 0}
  .intro-grid h1{font-size:38px}.section-head h2,.demo-copy h2,.faq-lead h2{font-size:27px}.guide-item{grid-template-columns:45px minmax(0,1fr);gap:13px;padding:18px 15px}.guide-no{width:41px;height:41px;border-radius:12px}
  .guide-copy h3{font-size:17px}.notice-grid{grid-template-columns:1fr}.demo-visual{min-height:315px}.visual-float.one{left:9px}.visual-float.two{right:9px}.final-band{padding:27px 22px}.final-row{display:block}.final-row .btn{width:100%;margin-top:20px}
  .list-footer{display:block}.list-footer .article-link{display:inline-block;margin-top:12px}.footer{padding-top:46px}.footer-grid{grid-template-columns:1fr;gap:26px}.footer-bottom{display:block}.footer-bottom span{display:block;margin:4px 0}
}

/* roulang page: category3 */
:root{
      --ink:#172724;
      --ink-soft:#40514d;
      --muted:#71827d;
      --paper:#fbfaf6;
      --mint:#eef6f1;
      --mint-deep:#dcece3;
      --line:#dbe6df;
      --teal:#0d7667;
      --teal-dark:#075b51;
      --teal-light:#bce6d8;
      --orange:#d98248;
      --orange-bg:#fff1e7;
      --white:#fff;
      --graphite:#162622;
      --radius:18px;
      --radius-sm:12px;
      --shadow:0 14px 36px rgba(21,48,41,.09);
      --shadow-hover:0 18px 42px rgba(21,48,41,.16);
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.75}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,textarea{font:inherit}
    button{cursor:pointer}
    :focus-visible{outline:3px solid rgba(13,118,103,.35);outline-offset:3px}
    .container{width:min(calc(100% - 48px),var(--container));margin:0 auto}
    .section{padding:78px 0}
    .section-soft{background:var(--mint)}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--teal);font-size:13px;font-weight:800;letter-spacing:.08em}
    .eyebrow:before{content:"";width:26px;height:2px;background:var(--orange)}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:32px}
    .section-head h2{margin:7px 0 0;font-size:32px;line-height:1.3;letter-spacing:-.035em}
    .section-head p{max-width:505px;margin:0;color:var(--ink-soft);font-size:15px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 20px;border:1px solid transparent;border-radius:10px;font-size:15px;font-weight:800;transition:transform .2s,box-shadow .2s,background .2s,color .2s,border-color .2s}
    .btn:hover{transform:translateY(-2px);box-shadow:0 9px 20px rgba(9,89,77,.18)}
    .btn:active{transform:translateY(0)}
    .btn-primary{background:var(--teal);color:#fff}
    .btn-primary:hover{background:var(--teal-dark)}
    .btn-secondary{background:#fff;border-color:#b8d2c7;color:var(--teal-dark)}
    .btn-secondary:hover{background:var(--mint)}
    .tag{display:inline-flex;align-items:center;padding:4px 9px;border-radius:999px;background:var(--mint);color:var(--teal-dark);font-size:12px;font-weight:800}
    .tag.orange{background:var(--orange-bg);color:#ab5a2c}
    .site-header{position:sticky;z-index:30;top:0;border-bottom:1px solid rgba(219,230,223,.8);background:rgba(251,250,246,.93);backdrop-filter:blur(14px)}
    .header-inner{height:76px;display:flex;align-items:center;justify-content:space-between;gap:22px}
    .brand{display:flex;align-items:center;gap:10px;min-width:230px;font-weight:900;font-size:15px;letter-spacing:-.03em;line-height:1.25}
    .brand-mark{display:grid;place-items:center;width:34px;height:34px;flex:0 0 34px;border-radius:10px;background:var(--teal);color:#fff;font-size:14px;box-shadow:inset 0 -7px 0 rgba(0,0,0,.11)}
    .nav{display:flex;align-items:center;justify-content:center;gap:3px}
    .nav a{position:relative;padding:9px 12px;border-radius:8px;color:#4a5c56;font-size:14px;font-weight:700;white-space:nowrap;transition:color .2s,background .2s}
    .nav a:hover,.nav a.active{color:var(--teal-dark);background:var(--mint)}
    .nav a.active:after{content:"";position:absolute;right:12px;bottom:3px;left:12px;height:2px;border-radius:2px;background:var(--teal)}
    .header-actions{display:flex;align-items:center;gap:10px}
    .header-actions .btn{min-height:40px;padding:0 15px}
    .menu-toggle{display:none;width:42px;height:40px;border:1px solid var(--line);border-radius:9px;background:#fff;color:var(--teal-dark)}
    .page-intro{position:relative;overflow:hidden;padding:44px 0 50px;background:linear-gradient(120deg,#f7fbf8 0%,#f7fbf8 62%,#e0efe7 62%,#e0efe7 100%);border-bottom:1px solid var(--line)}
    .page-intro:after{content:"";position:absolute;right:5%;bottom:-68px;width:250px;height:250px;border:28px solid rgba(13,118,103,.08);border-radius:50%}
    .breadcrumb{position:relative;z-index:1;display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin-bottom:22px;color:var(--muted);font-size:13px}
    .breadcrumb a:hover{color:var(--teal)}
    .breadcrumb span{color:#9aaca5}
    .intro-layout{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:60px;align-items:end}
    .intro-layout h1{max-width:700px;margin:10px 0 12px;font-size:clamp(38px,5vw,58px);line-height:1.18;letter-spacing:-.055em}
    .intro-layout p{max-width:700px;margin:0;color:var(--ink-soft);font-size:17px}
    .intro-note{padding:20px;border-left:3px solid var(--orange);border-radius:0 var(--radius-sm) var(--radius-sm) 0;background:rgba(255,255,255,.68);color:var(--ink-soft);font-size:14px}
    .intro-note strong{display:block;margin-bottom:4px;color:var(--ink);font-size:15px}
    .version-grid{display:grid;grid-template-columns:1.3fr repeat(2,.85fr);gap:16px}
    .version-card{min-height:185px;padding:25px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:0 8px 23px rgba(21,48,41,.05);transition:transform .2s,box-shadow .2s}
    .version-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
    .version-card.featured{color:#fff;background:var(--graphite);border-color:var(--graphite)}
    .version-card .icon{display:grid;place-items:center;width:42px;height:42px;margin-bottom:18px;border-radius:12px;background:var(--mint);color:var(--teal);font-size:20px;font-weight:900}
    .featured .icon{background:rgba(188,230,216,.17);color:#bce6d8}
    .version-card h3{margin:0 0 8px;font-size:19px}
    .version-card p{margin:0;color:var(--muted);font-size:14px}
    .featured p{color:#c8d6d1}
    .version-number{display:block;margin-top:15px;font-size:13px;font-weight:800;color:var(--teal)}
    .featured .version-number{color:#f1be91}
    .download-panel{position:relative;overflow:hidden;display:grid;grid-template-columns:.8fr 1.25fr .95fr;gap:26px;align-items:center;padding:42px;border-radius:24px;background:var(--graphite);color:#fff;box-shadow:var(--shadow)}
    .download-panel:before{content:"";position:absolute;left:-80px;bottom:-150px;width:330px;height:330px;border:1px solid rgba(188,230,216,.16);border-radius:50%}
    .download-panel:after{content:"";position:absolute;right:3%;top:0;width:160px;height:160px;background-image:radial-gradient(rgba(188,230,216,.18) 1px,transparent 1px);background-size:13px 13px}
    .download-panel>*{position:relative;z-index:1}
    .qr-box{display:grid;place-items:center;width:176px;height:176px;padding:13px;border-radius:17px;background:#fff;color:var(--graphite);box-shadow:0 12px 24px rgba(0,0,0,.17)}
    .qr-pattern{width:100%;height:100%;background:
      linear-gradient(90deg,#162622 11%,transparent 11% 20%,#162622 20% 31%,transparent 31% 40%,#162622 40% 48%,transparent 48% 60%,#162622 60% 70%,transparent 70% 81%,#162622 81%),
      linear-gradient(#162622 11%,transparent 11% 21%,#162622 21% 32%,transparent 32% 42%,#162622 42% 50%,transparent 50% 61%,#162622 61% 72%,transparent 72% 82%,#162622 82%);
      background-size:33px 33px;border:8px solid #162622;opacity:.94}
    .download-copy h2{margin:0 0 10px;font-size:30px;line-height:1.3;letter-spacing:-.03em}
    .download-copy p{margin:0;color:#c6d4ce;font-size:15px}
    .download-actions{display:grid;gap:11px;margin-top:22px}
    .download-actions .btn{justify-content:flex-start;padding:0 17px}
    .download-actions .btn span{display:grid;place-items:center;width:25px;height:25px;border-radius:7px;background:rgba(255,255,255,.16);font-size:12px}
    .download-meta{padding:21px;border:1px solid rgba(188,230,216,.19);border-radius:16px;background:rgba(255,255,255,.06)}
    .download-meta h3{margin:0 0 13px;font-size:17px}
    .download-meta ul{padding:0;margin:0;list-style:none;color:#c6d4ce;font-size:13px}
    .download-meta li{display:flex;gap:8px;padding:8px 0;border-bottom:1px solid rgba(255,255,255,.1)}
    .download-meta li:last-child{border:0}
    .download-meta li:before{content:"✓";color:#a5dfca;font-weight:900}
    .steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
    .step-card{position:relative;padding:27px 26px 25px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:0 8px 22px rgba(21,48,41,.04)}
    .step-card:not(:last-child):after{content:"";position:absolute;top:50px;right:-21px;width:21px;border-top:1px dashed #97bbae}
    .step-num{display:grid;place-items:center;width:40px;height:40px;margin-bottom:17px;border-radius:50%;background:var(--teal);color:#fff;font-size:14px;font-weight:900}
    .step-card h3{margin:0 0 8px;font-size:19px}
    .step-card p{margin:0;color:var(--ink-soft);font-size:14px}
    .tip-line{margin-top:15px;padding-top:14px;border-top:1px solid var(--line);color:var(--muted);font-size:12px}
    .preview-layout{display:grid;grid-template-columns:.82fr 1.18fr;gap:68px;align-items:center}
    .phone-area{position:relative;min-height:480px;display:grid;place-items:center;border-radius:24px;background:#dbece4;overflow:hidden}
    .phone-area:before{content:"";position:absolute;inset:26px;border:1px solid rgba(13,118,103,.16);border-radius:19px}
    .phone{position:relative;z-index:1;width:235px;padding:10px;border:8px solid #10211d;border-radius:35px;background:#10211d;box-shadow:0 24px 34px rgba(24,55,46,.24)}
    .phone-notch{width:86px;height:18px;margin:-4px auto 8px;border-radius:0 0 12px 12px;background:#10211d}
    .phone-screen{min-height:390px;padding:15px;border-radius:22px;background:linear-gradient(155deg,#e9f5ee 0%,#cfe7dc 100%)}
    .mini-brand{display:flex;align-items:center;gap:6px;color:var(--teal-dark);font-size:10px;font-weight:900}
    .mini-brand b{display:grid;place-items:center;width:19px;height:19px;border-radius:6px;background:var(--teal);color:#fff;font-size:8px}
    .mini-hero{margin-top:18px;padding:15px;border-radius:15px;background:linear-gradient(135deg,#0d7667,#168b79);color:#fff}
    .mini-hero small{color:#c9f4e5;font-size:9px}
    .mini-hero strong{display:block;margin:24px 0 10px;font-size:19px;line-height:1.2}
    .mini-hero span{display:inline-block;padding:4px 7px;border-radius:5px;background:rgba(255,255,255,.18);font-size:8px}
    .mini-row{display:grid;grid-template-columns:repeat(2,1fr);gap:9px;margin-top:12px}
    .mini-card{height:78px;padding:10px;border:1px solid #c5ded3;border-radius:11px;background:#fff}
    .mini-card i{display:block;width:21px;height:21px;border-radius:7px;background:var(--mint-deep)}
    .mini-card b{display:block;width:68%;height:7px;margin-top:11px;border-radius:6px;background:#b6d4c8}
    .mini-card em{display:block;width:45%;height:5px;margin-top:7px;border-radius:6px;background:#d8e8e0}
    .preview-copy h2{margin:7px 0 16px;font-size:33px;line-height:1.32;letter-spacing:-.035em}
    .preview-copy>p{margin:0 0 23px;color:var(--ink-soft)}
    .preview-list{display:grid;gap:13px}
    .preview-item{display:flex;gap:14px;padding:15px 0;border-bottom:1px solid var(--line)}
    .preview-item:last-child{border-bottom:0}
    .preview-icon{display:grid;place-items:center;width:38px;height:38px;flex:0 0 38px;border-radius:11px;background:var(--mint);color:var(--teal);font-weight:900}
    .preview-item h3{margin:0 0 2px;font-size:16px}
    .preview-item p{margin:0;color:var(--muted);font-size:13px}
    .timeline{position:relative;max-width:920px;margin:0 auto}
    .timeline:before{content:"";position:absolute;top:30px;right:60px;left:60px;height:2px;background:#c7ddd3}
    .timeline-row{position:relative;display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
    .time-item{position:relative;padding-top:58px}
    .time-dot{position:absolute;top:19px;left:0;display:grid;place-items:center;width:24px;height:24px;border:5px solid var(--mint);border-radius:50%;background:var(--teal)}
    .time-item.new .time-dot{background:var(--orange)}
    .time-item h3{margin:0 0 5px;font-size:17px}
    .time-item p{margin:0;color:var(--ink-soft);font-size:14px}
    .time-date{display:inline-block;margin-bottom:8px;color:var(--teal);font-size:12px;font-weight:900}
    .faq-wrap{display:grid;grid-template-columns:.7fr 1.3fr;gap:65px}
    .faq-intro h2{margin:8px 0 13px;font-size:32px;line-height:1.3;letter-spacing:-.035em}
    .faq-intro p{margin:0;color:var(--ink-soft)}
    .faq-list{border-top:1px solid var(--line)}
    .faq-item{border-bottom:1px solid var(--line)}
    .faq-question{display:flex;align-items:center;justify-content:space-between;gap:18px;width:100%;padding:20px 2px;border:0;background:transparent;color:var(--ink);text-align:left;font-size:16px;font-weight:800}
    .faq-question i{display:grid;place-items:center;width:26px;height:26px;flex:0 0 26px;border-radius:50%;background:var(--mint);color:var(--teal);font-style:normal;transition:transform .25s,background .25s}
    .faq-item.open .faq-question i{transform:rotate(45deg);background:var(--teal);color:#fff}
    .faq-answer{display:none;padding:0 38px 20px 2px;color:var(--ink-soft);font-size:14px}
    .faq-item.open .faq-answer{display:block;animation:fade .25s ease}
    @keyframes fade{from{opacity:0;transform:translateY(-5px)}to{opacity:1;transform:translateY(0)}}
    .help-list{display:grid;grid-template-columns:1.05fr .95fr;gap:24px}
    .article-list{overflow:hidden;border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:0 8px 22px rgba(21,48,41,.04)}
    .article-row{display:flex;align-items:center;gap:18px;padding:20px 23px;border-bottom:1px solid var(--line);transition:background .2s}
    .article-row:last-child{border-bottom:0}
    .article-row:hover{background:#f7fbf8}
    .article-date{min-width:52px;color:var(--teal);font-size:12px;font-weight:900;line-height:1.3}
    .article-row h3{flex:1;margin:0;font-size:16px;line-height:1.45}
    .article-arrow{color:var(--teal);font-size:21px}
    .support-card{padding:31px;border-radius:var(--radius);background:#fff0e5;border:1px solid #f2d4bf}
    .support-card .tag{background:#fff;color:#ab5a2c}
    .support-card h2{margin:13px 0 10px;font-size:27px;line-height:1.3;letter-spacing:-.03em}
    .support-card p{margin:0;color:#775840;font-size:14px}
    .support-card .btn{margin-top:22px;background:#b96838;color:#fff}
    .support-card .btn:hover{background:#9d5229}
    .list-more{display:inline-flex;align-items:center;gap:8px;margin-top:23px;color:var(--teal-dark);font-size:14px;font-weight:900}
    .list-more:hover{color:var(--teal)}
    .footer{padding:65px 0 23px;background:var(--graphite);color:#e7efeb}
    .footer-grid{display:grid;grid-template-columns:1.55fr repeat(3,1fr) .78fr;gap:34px;padding-bottom:43px}
    .footer .brand{min-width:0;color:#fff}
    .footer .brand-mark{background:#198674}
    .footer p{margin:14px 0 0;color:#aebeb8;font-size:13px;line-height:1.7}
    .footer h3{margin:0 0 13px;color:#fff;font-size:14px}
    .footer-links{display:grid;gap:8px}
    .footer-links a{color:#aebeb8;font-size:13px;transition:color .2s}
    .footer-links a:hover{color:#bce6d8}
    .footer-qr{display:grid;place-items:center;width:74px;height:74px;border:5px solid #e8f3ed;border-radius:8px;background:repeating-linear-gradient(90deg,#fff 0 7px,#152622 7px 12px,#fff 12px 17px);color:#152622;font-size:10px;font-weight:900}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;padding-top:21px;border-top:1px solid rgba(255,255,255,.13);color:#91a39c;font-size:12px}
    @media (max-width:1024px){
      .nav a{padding-right:8px;padding-left:8px;font-size:13px}
      .brand{min-width:205px;font-size:14px}
      .download-panel{grid-template-columns:.7fr 1.15fr;gap:22px}
      .download-meta{grid-column:1/-1}
      .preview-layout,.faq-wrap{gap:40px}
      .footer-grid{grid-template-columns:1.4fr repeat(3,1fr)}
    }
    @media (max-width:768px){
      .container{width:min(calc(100% - 32px),var(--container))}
      .section{padding:59px 0}
      .header-inner{height:68px}
      .brand{min-width:0;max-width:235px}
      .nav{position:absolute;top:68px;right:16px;left:16px;display:none;align-items:stretch;padding:10px;border:1px solid var(--line);border-radius:14px;background:#fff;box-shadow:var(--shadow)}
      .nav.show{display:grid}
      .nav a{padding:11px 13px}
      .header-actions .btn{display:none}
      .menu-toggle{display:grid;place-items:center}
      .intro-layout{grid-template-columns:1fr;gap:25px}
      .intro-layout h1{font-size:42px}
      .intro-note{max-width:520px}
      .section-head{display:block;margin-bottom:26px}
      .section-head p{margin-top:13px}
      .version-grid{grid-template-columns:1fr 1fr}
      .version-card.featured{grid-column:1/-1}
      .download-panel{grid-template-columns:1fr;padding:30px}
      .qr-box{width:150px;height:150px}
      .steps-grid{grid-template-columns:1fr}
      .step-card:not(:last-child):after{top:auto;right:auto;bottom:-21px;left:31px;width:1px;height:21px;border-top:0;border-left:1px dashed #97bbae}
      .preview-layout{grid-template-columns:1fr;gap:36px}
      .phone-area{min-height:430px}
      .timeline:before{top:0;bottom:0;left:11px;width:2px;height:auto}
      .timeline-row{grid-template-columns:1fr;gap:9px}
      .time-item{padding:0 0 18px 46px}
      .time-dot{top:4px;left:0}
      .faq-wrap,.help-list{grid-template-columns:1fr;gap:30px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:29px}
      .footer-grid>div:first-child{grid-column:1/-1}
    }
    @media (max-width:520px){
      body{font-size:15px}
      .container{width:min(calc(100% - 28px),var(--container))}
      .brand{font-size:13px}
      .brand-mark{width:31px;height:31px;flex-basis:31px}
      .page-intro{padding:31px 0 37px}
      .intro-layout h1{font-size:35px}
      .intro-layout p{font-size:15px}
      .section-head h2,.faq-intro h2{font-size:27px}
      .version-grid{grid-template-columns:1fr}
      .version-card.featured{grid-column:auto}
      .download-panel{padding:25px 21px}
      .download-copy h2{font-size:25px}
      .preview-copy h2{font-size:28px}
      .phone-area{min-height:398px}
      .phone{transform:scale(.91)}
      .article-row{gap:12px;padding:17px}
      .article-row h3{font-size:14px}
      .support-card{padding:25px 21px}
      .footer-grid{grid-template-columns:1fr}
      .footer-grid>div:first-child{grid-column:auto}
      .footer-bottom{display:block}
      .footer-bottom span{display:block;margin:5px 0}
    }

/* roulang page: category4 */
:root{
      --ink:#172724;--ink-soft:#40514d;--muted:#71827d;--paper:#fbfaf6;--mint:#eef6f1;
      --mint-deep:#dcece3;--line:#dbe6df;--teal:#0d7667;--teal-dark:#075b51;--teal-light:#bce6d8;
      --orange:#d98248;--orange-bg:#fff1e7;--white:#fff;--graphite:#162622;--radius:18px;
      --radius-sm:12px;--shadow:0 14px 36px rgba(21,48,41,.09);--shadow-hover:0 18px 42px rgba(21,48,41,.16);
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.75}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,textarea{font:inherit}
    button{cursor:pointer}
    .container{width:min(calc(100% - 48px),var(--container));margin:0 auto}
    .section{padding:84px 0}
    .section-soft{background:var(--mint)}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--teal);font-size:13px;font-weight:800;letter-spacing:.08em}
    .eyebrow:before{content:"";width:26px;height:2px;background:var(--orange)}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:30px}
    .section-head h2{margin:7px 0 0;font-size:32px;line-height:1.3;letter-spacing:-.03em}
    .section-head p{max-width:520px;margin:0;color:var(--ink-soft);font-size:15px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 20px;border:1px solid transparent;border-radius:10px;font-size:15px;font-weight:800;transition:transform .2s,box-shadow .2s,background .2s,color .2s}
    .btn:hover{transform:translateY(-2px);box-shadow:0 9px 20px rgba(9,89,77,.18)}
    .btn:focus,.nav a:focus,.filter-tag:focus,.faq-button:focus,input:focus{outline:3px solid rgba(13,118,103,.25);outline-offset:3px}
    .btn-primary{background:var(--teal);color:#fff}
    .btn-primary:hover{background:var(--teal-dark);color:#fff}
    .btn-secondary{background:#fff;border-color:#b8d2c7;color:var(--teal-dark)}
    .btn-secondary:hover{background:var(--mint);color:var(--teal-dark)}
    .tag{display:inline-flex;align-items:center;padding:4px 9px;border-radius:999px;background:var(--mint);color:var(--teal-dark);font-size:12px;font-weight:800}
    .tag.orange{background:var(--orange-bg);color:#ab5a2c}
    .site-header{position:sticky;z-index:30;top:0;border-bottom:1px solid rgba(219,230,223,.8);background:rgba(251,250,246,.92);backdrop-filter:blur(14px)}
    .header-inner{height:76px;display:flex;align-items:center;justify-content:space-between;gap:22px}
    .brand{display:flex;align-items:center;gap:10px;min-width:230px;font-size:15px;font-weight:900;letter-spacing:-.03em;line-height:1.25}
    .brand-mark{display:grid;place-items:center;width:34px;height:34px;flex:0 0 34px;border-radius:10px;background:var(--teal);color:#fff;font-size:14px;box-shadow:inset 0 -7px 0 rgba(0,0,0,.11)}
    .nav{display:flex;align-items:center;justify-content:center;gap:3px}
    .nav a{position:relative;padding:9px 12px;border-radius:8px;color:#4a5c56;font-size:14px;font-weight:700;white-space:nowrap;transition:color .2s,background .2s}
    .nav a:hover,.nav a.active{background:var(--mint);color:var(--teal-dark)}
    .nav a.active:after{content:"";position:absolute;right:12px;bottom:3px;left:12px;height:2px;border-radius:2px;background:var(--teal)}
    .header-actions{display:flex;align-items:center;gap:10px}
    .header-actions .btn{min-height:40px;padding:0 15px}
    .menu-toggle{display:none;width:42px;height:40px;border:1px solid var(--line);border-radius:9px;background:#fff;color:var(--teal-dark)}
    .page-hero{position:relative;overflow:hidden;padding:54px 0 45px;background:linear-gradient(115deg,#f7faf7 0%,#edf6f1 100%);border-bottom:1px solid var(--line)}
    .page-hero:after{content:"";position:absolute;right:4%;top:-80px;width:290px;height:290px;border:32px solid rgba(13,118,103,.07);border-radius:50%}
    .breadcrumb{position:relative;z-index:1;display:flex;flex-wrap:wrap;align-items:center;gap:9px;margin:0 0 20px;color:var(--muted);font-size:14px}
    .breadcrumb a:hover{color:var(--teal-dark)}
    .breadcrumb span:last-child{color:var(--ink-soft)}
    .hero-layout{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:50px;align-items:end}
    .hero-layout h1{max-width:720px;margin:10px 0 13px;font-size:clamp(38px,5vw,58px);line-height:1.15;letter-spacing:-.055em}
    .hero-layout p{max-width:720px;margin:0;color:var(--ink-soft);font-size:17px}
    .update-stamp{padding:20px;border:1px solid #bfd9ce;border-radius:var(--radius);background:#fff;box-shadow:var(--shadow)}
    .update-stamp strong{display:block;margin:6px 0 4px;font-size:26px;line-height:1.1;color:var(--teal-dark)}
    .update-stamp p{margin:0;font-size:13px;color:var(--muted)}
    .intro-strip{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:22px;padding:22px 25px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:var(--shadow)}
    .intro-icon{display:grid;place-items:center;width:48px;height:48px;border-radius:14px;background:var(--mint);color:var(--teal);font-size:23px}
    .intro-strip h2{margin:0 0 3px;font-size:18px}
    .intro-strip p{margin:0;color:var(--ink-soft);font-size:14px}
    .status-line{display:flex;align-items:center;gap:8px;color:var(--teal-dark);font-size:13px;font-weight:800;white-space:nowrap}
    .status-dot{width:8px;height:8px;border-radius:50%;background:#45ad85;box-shadow:0 0 0 4px #e7f6ee}
    .notice-bar{display:grid;grid-template-columns:52px 1fr auto;align-items:center;gap:18px;padding:19px 22px;border:1px solid #f0c6aa;border-radius:var(--radius);background:var(--orange-bg)}
    .notice-symbol{display:grid;place-items:center;width:52px;height:52px;border-radius:15px;background:#fff;color:var(--orange);font-size:26px;font-weight:900}
    .notice-bar h2{margin:0 0 3px;font-size:18px}
    .notice-bar p{margin:0;color:#76523f;font-size:14px}
    .notice-date{font-size:13px;font-weight:800;color:#9c5e36;white-space:nowrap}
    .filter-bar{display:flex;flex-wrap:wrap;gap:10px;padding:18px;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
    .filter-label{display:flex;align-items:center;margin-right:6px;color:var(--ink-soft);font-size:14px;font-weight:800}
    .filter-tag{border:1px solid var(--line);border-radius:999px;background:#fff;padding:8px 13px;color:var(--ink-soft);font-size:13px;font-weight:800;transition:all .2s}
    .filter-tag:hover,.filter-tag.active{border-color:var(--teal);background:var(--teal);color:#fff}
    .news-layout{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(360px,.95fr);gap:24px}
    .lead-news{position:relative;overflow:hidden;min-height:430px;padding:32px;display:flex;flex-direction:column;justify-content:end;border-radius:var(--radius);background:linear-gradient(145deg,#0f5f55 0%,#0b7769 60%,#45ac90 100%);color:#fff;box-shadow:var(--shadow)}
    .lead-news:before{content:"";position:absolute;top:28px;right:28px;width:155px;height:155px;border:1px solid rgba(255,255,255,.28);border-radius:26px;transform:rotate(13deg)}
    .lead-news:after{content:"";position:absolute;right:-28px;bottom:-55px;color:rgba(255,255,255,.11);content:"UPDATE";font-size:65px;font-weight:900;letter-spacing:-.08em}
    .lead-news > *{position:relative;z-index:1}
    .lead-news h2{max-width:540px;margin:14px 0 10px;font-size:30px;line-height:1.35}
    .lead-news p{max-width:540px;margin:0;color:#dcefe9}
    .news-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:19px;font-size:13px;color:#d9eee7}
    .news-meta .tag{background:rgba(255,255,255,.17);color:#fff}
    .article-link{display:inline-flex;align-items:center;gap:7px;margin-top:22px;font-size:14px;font-weight:900;color:#fff}
    .article-link:hover{color:#d3faed}
    .article-link span{font-size:20px;line-height:1}
    .compact-news{display:flex;flex-direction:column;gap:12px}
    .news-row{display:grid;grid-template-columns:76px 1fr;gap:16px;padding:17px;border:1px solid var(--line);border-radius:15px;background:#fff;transition:transform .2s,box-shadow .2s,border-color .2s}
    .news-row:hover{transform:translateY(-2px);border-color:#b6d5c7;box-shadow:var(--shadow)}
    .news-date{display:flex;flex-direction:column;justify-content:center;align-items:center;min-height:72px;border-radius:11px;background:var(--mint);color:var(--teal-dark);font-weight:900;line-height:1.15}
    .news-date small{margin-top:5px;color:var(--muted);font-size:11px;font-weight:700}
    .news-row h3{margin:5px 0 5px;font-size:17px;line-height:1.4}
    .news-row p{display:-webkit-box;overflow:hidden;margin:0;color:var(--ink-soft);font-size:13px;line-height:1.65;-webkit-line-clamp:2;-webkit-box-orient:vertical}
    .timeline{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .timeline:before{content:"";position:absolute;top:31px;right:9%;left:9%;height:1px;background:#bfd9ce}
    .timeline-item{position:relative;padding:0 12px;text-align:center}
    .time-dot{position:relative;z-index:1;display:grid;place-items:center;width:62px;height:62px;margin:0 auto 16px;border:7px solid var(--mint);border-radius:50%;background:var(--teal);color:#fff;font-size:13px;font-weight:900}
    .timeline-item h3{margin:0 0 5px;font-size:16px}
    .timeline-item p{margin:0;color:var(--ink-soft);font-size:13px;line-height:1.65}
    .subscribe-box{display:grid;grid-template-columns:1fr minmax(320px,.8fr);gap:42px;align-items:center;padding:40px 45px;border-radius:var(--radius);background:var(--graphite);color:#fff;box-shadow:var(--shadow)}
    .subscribe-box h2{margin:9px 0 10px;font-size:31px;line-height:1.3}
    .subscribe-box p{max-width:570px;margin:0;color:#c9d8d2}
    .subscribe-form{display:flex;gap:10px;padding:8px;border:1px solid rgba(255,255,255,.18);border-radius:13px;background:rgba(255,255,255,.08)}
    .subscribe-form input{min-width:0;flex:1;border:0;outline:0;background:transparent;padding:0 10px;color:#fff;font-size:14px}
    .subscribe-form input::placeholder{color:#a9bcb5}
    .form-note{margin:11px 0 0;color:#adc0b9;font-size:12px}
    .faq-grid{display:grid;grid-template-columns:.7fr 1.3fr;gap:58px}
    .faq-copy h2{margin:8px 0 12px;font-size:33px;line-height:1.3}
    .faq-copy p{margin:0;color:var(--ink-soft)}
    .faq-list{border-top:1px solid var(--line)}
    .faq-item{border-bottom:1px solid var(--line)}
    .faq-button{display:flex;justify-content:space-between;align-items:center;width:100%;padding:20px 2px;border:0;background:transparent;color:var(--ink);text-align:left;font-weight:900}
    .faq-button i{font-style:normal;color:var(--teal);font-size:24px;transition:transform .25s}
    .faq-answer{display:none;padding:0 38px 20px 2px;color:var(--ink-soft);font-size:14px}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-button i{transform:rotate(45deg)}
    .more-row{display:flex;justify-content:center;margin-top:31px}
    .more-row .btn{min-width:190px}
    .footer{padding:64px 0 22px;background:var(--graphite);color:#eaf2ee}
    .footer-grid{display:grid;grid-template-columns:1.7fr repeat(4,1fr);gap:34px}
    .footer .brand{min-width:0;color:#fff}
    .footer .brand-mark{background:#1a8e7d}
    .footer p{margin:14px 0 0;color:#aebfb8;font-size:13px;line-height:1.7}
    .footer h3{margin:3px 0 13px;color:#fff;font-size:14px}
    .footer-links{display:flex;flex-direction:column;gap:8px}
    .footer-links a{color:#b5c7c0;font-size:13px;transition:color .2s}
    .footer-links a:hover{color:#8ae2ca}
    .footer-qr{display:grid;place-items:center;width:70px;height:70px;border:1px solid rgba(255,255,255,.23);border-radius:8px;background:#fff;color:var(--graphite);font-size:11px;font-weight:900}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;margin-top:42px;padding-top:19px;border-top:1px solid rgba(255,255,255,.12);color:#93aaa1;font-size:12px}
    @media(max-width:1024px){
      .brand{min-width:190px;font-size:13px}.nav a{padding:8px;font-size:13px}.header-actions .btn{padding:0 11px}
      .hero-layout{grid-template-columns:1fr 250px}.news-layout{grid-template-columns:1fr}.compact-news{display:grid;grid-template-columns:1fr 1fr}
      .subscribe-box{padding:34px;gap:28px}.footer-grid{grid-template-columns:1.5fr repeat(2,1fr)}
    }
    @media(max-width:768px){
      .container{width:min(calc(100% - 32px),var(--container))}.section{padding:60px 0}.site-header{backdrop-filter:none}
      .header-inner{height:68px}.brand{min-width:0;max-width:240px}.nav{display:none;position:absolute;top:68px;right:16px;left:16px;flex-direction:column;align-items:stretch;padding:12px;border:1px solid var(--line);border-radius:14px;background:#fff;box-shadow:var(--shadow)}
      .nav.show{display:flex}.nav a{padding:11px 13px}.menu-toggle{display:block}.header-actions .btn{display:none}
      .page-hero{padding:38px 0}.hero-layout{grid-template-columns:1fr;gap:22px}.update-stamp{max-width:320px}.section-head{display:block;margin-bottom:24px}.section-head p{margin-top:12px}
      .intro-strip{grid-template-columns:48px 1fr}.status-line{grid-column:2}.notice-bar{grid-template-columns:48px 1fr}.notice-symbol{width:48px;height:48px}.notice-date{grid-column:2}
      .news-layout{gap:16px}.compact-news{grid-template-columns:1fr}.lead-news{min-height:340px;padding:25px}.timeline{grid-template-columns:1fr 1fr;row-gap:28px}.timeline:before{display:none}
      .subscribe-box{grid-template-columns:1fr;padding:30px}.faq-grid{grid-template-columns:1fr;gap:25px}.footer-grid{grid-template-columns:1fr 1fr;gap:28px}
    }
    @media(max-width:520px){
      body{font-size:15px}.container{width:min(calc(100% - 28px),var(--container))}.brand{font-size:12px}.brand-mark{width:31px;height:31px;flex-basis:31px}
      .page-hero h1{font-size:37px}.page-hero p{font-size:15px}.section-head h2,.faq-copy h2,.subscribe-box h2{font-size:27px}
      .intro-strip{padding:18px}.filter-bar{padding:13px}.filter-label{width:100%}.filter-tag{padding:7px 11px}.notice-bar{padding:16px}
      .lead-news h2{font-size:24px}.news-row{grid-template-columns:62px 1fr;padding:14px;gap:12px}.news-date{min-height:62px;font-size:13px}
      .timeline{grid-template-columns:1fr}.subscribe-box{padding:25px 20px}.subscribe-form{flex-direction:column;background:transparent;border:0;padding:0}.subscribe-form input{min-height:48px;border:1px solid rgba(255,255,255,.25);border-radius:10px;padding:0 13px}
      .footer-grid{grid-template-columns:1fr}.footer-bottom{flex-direction:column;gap:6px;margin-top:28px}.btn{width:100%}
    }