/* roulang page: index */
:root{
--paper:#F6EFE3;--paper-2:#FBF6EC;--card:#FFFDF8;
--ink-green:#2C3E33;--ink-deep:#1E2B24;--ochre:#B0763C;--wine:#8A3A33;
--text:#221E19;--muted:#6A6154;--line:#E2D7C4;--teal:#37545C;--ok:#4C6B4F;
--r:14px;--r-sm:10px;
--shadow:0 0 0 1px var(--line),0 8px 24px rgba(44,62,51,.06);
--shadow-h:0 0 0 1px var(--line),0 12px 28px rgba(44,62,51,.10);
--serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
--sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--text);font-family:var(--sans);font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}
h1,h2,h3{font-family:var(--serif);font-weight:700;letter-spacing:.01em;margin:0;line-height:1.3}
p{margin:0}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none;margin:0;padding:0}
figure{margin:0}
button{font:inherit}
a:focus-visible,summary:focus-visible{outline:2px solid var(--ochre);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.sec{padding:72px 0}
.sec-alt{background:var(--paper-2)}
.sec-head{max-width:760px;margin-bottom:32px}
.sec-head h2{font-size:clamp(22px,2.4vw,32px);position:relative;padding-left:16px}
.sec-head h2::before{content:"";position:absolute;left:0;top:.38em;width:3px;height:18px;background:var(--ochre);border-radius:2px}
.sec-head p{margin-top:12px;color:var(--muted);font-size:15px}
.num{font-family:var(--serif);font-variant-numeric:tabular-nums}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 20px;border-radius:8px;font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:background .2s,color .2s,box-shadow .2s,border-color .2s}
.btn-primary{background:var(--ink-green);color:#F6EFE3}
.btn-primary:hover{background:var(--ink-deep);box-shadow:0 8px 20px rgba(44,62,51,.18)}
.btn-outline{border-color:var(--ink-green);color:var(--ink-green)}
.btn-outline:hover{background:var(--ink-green);color:#F6EFE3}
.btn-light{background:#F6EFE3;color:var(--ink-green)}
.btn-light:hover{background:#fff}
.btn-ghost{border-color:rgba(246,239,227,.45);color:#F6EFE3}
.btn-ghost:hover{background:rgba(246,239,227,.14)}
.badge{display:inline-flex;align-items:center;padding:2px 10px;border-radius:999px;font-size:12px;line-height:1.6;border:1px solid currentColor;background:transparent}
.b-blue{color:var(--teal)}
.b-green{color:var(--ok)}
.b-ochre{color:var(--ochre)}
.grid{display:grid;gap:24px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.g5{grid-template-columns:repeat(5,1fr)}

/* header */
.site-header{background:rgba(255,253,248,.94);border-bottom:1px solid var(--line);position:relative;z-index:20}
.header-top{display:flex;align-items:center;justify-content:space-between;gap:24px;padding-top:16px;padding-bottom:16px}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{width:40px;height:40px;border-radius:8px;background:var(--ink-green);color:#F6EFE3;font-family:var(--serif);font-size:20px;display:flex;align-items:center;justify-content:center;flex:0 0 auto}
.brand-text{font-family:var(--serif);font-size:17px;font-weight:700;letter-spacing:.02em}
.header-tools{display:flex;align-items:center;gap:14px}
.ghost-btn{display:inline-flex;align-items:center;min-height:44px;padding:0 16px;border-radius:8px;border:1px solid var(--line);color:var(--ink-green);font-size:14px;font-weight:600;transition:.2s}
.ghost-btn:hover{border-color:var(--ink-green);background:var(--paper-2)}
.search-box{display:flex;align-items:center;gap:8px;min-height:44px;padding:0 14px;border:1px solid var(--line);border-radius:999px;color:var(--muted);font-size:14px;background:var(--paper-2);min-width:200px}
.search-box svg{width:16px;height:16px;flex:0 0 auto}
.icon-nav{border-top:1px solid var(--line);background:rgba(251,246,236,.9)}
.icon-nav-inner{display:flex;gap:6px;padding-top:8px;padding-bottom:8px;overflow-x:auto;scrollbar-width:none}
.icon-nav-inner::-webkit-scrollbar{display:none}
.icon-item{flex:1 0 auto;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;min-width:92px;min-height:56px;padding:8px 10px;border-radius:10px;color:var(--muted);font-size:13px;transition:.2s}
.icon-item svg{width:22px;height:22px}
.icon-item:hover,.icon-item.active{background:var(--paper-2);color:var(--ink-green)}
.icon-item.active{box-shadow:inset 0 -2px 0 var(--ochre)}

/* hero */
.hero{position:relative;overflow:hidden;padding:64px 0 0;isolation:isolate}
.hero-bg{position:absolute;inset:0;z-index:-2;background:url("/assets/images/6ef89d9d1402f898f5d94afbdb5e0e4e.jpg") center/cover no-repeat}
.hero::before{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(100deg,rgba(246,239,227,.97) 0%,rgba(246,239,227,.93) 48%,rgba(246,239,227,.62) 100%)}
.hero-inner{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;padding-bottom:48px}
.eyebrow{display:inline-block;font-size:13px;letter-spacing:.08em;color:var(--ochre);font-weight:600;margin-bottom:14px}
.hero h1{font-size:clamp(28px,4vw,46px);line-height:1.25}
.hero h1 em{font-style:normal;color:var(--wine);box-shadow:inset 0 -.22em 0 rgba(176,118,60,.32)}
.hero-sub{margin-top:16px;font-size:17px;color:var(--ink-green);font-weight:600}
.hero-lead{margin-top:14px;max-width:60ch;color:var(--muted);font-size:15.5px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-figure{position:relative;border-radius:var(--r);overflow:hidden;box-shadow:var(--shadow)}
.hero-figure img{width:100%;aspect-ratio:4/5;object-fit:cover}
.age-tag{position:absolute;top:16px;left:16px;background:rgba(255,253,248,.94);border-radius:12px;padding:10px 14px;box-shadow:0 6px 18px rgba(44,62,51,.14);display:flex;flex-direction:column;gap:2px}
.age-num{font-family:var(--serif);font-size:26px;font-weight:700;color:var(--wine);line-height:1;font-variant-numeric:tabular-nums}
.age-note{font-size:12px;color:var(--muted)}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border-radius:var(--r) var(--r) 0 0;overflow:hidden;margin-top:8px}
.hero-stats li{background:rgba(255,253,248,.96);padding:18px 20px;display:flex;flex-direction:column;gap:2px}
.hero-stats strong{font-family:var(--serif);font-size:24px;color:var(--ink-green);font-variant-numeric:tabular-nums;line-height:1.2}
.hero-stats span{font-size:13px;color:var(--muted)}

/* kpi */
.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.kpi{background:var(--card);border-radius:var(--r);padding:24px;box-shadow:var(--shadow)}
.kpi .val{font-family:var(--serif);font-size:40px;color:var(--ink-green);line-height:1.1;font-variant-numeric:tabular-nums}
.kpi .val small{font-size:15px;color:var(--muted);margin-left:4px}
.kpi .lbl{margin-top:8px;font-size:14px;font-weight:600;color:var(--text)}
.kpi .note{margin-top:6px;font-size:13px;color:var(--muted)}

/* pain */
.pain-wrap{display:grid;grid-template-columns:.8fr 1.2fr;gap:48px;align-items:start}
.quote{border-left:3px solid var(--ochre);padding:4px 0 4px 20px;font-family:var(--serif);font-size:19px;line-height:1.7;color:var(--ink-green)}
.quote span{display:block;margin-top:14px;font-family:var(--sans);font-size:13px;color:var(--muted);font-weight:400}
.pain-list{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.pain-list li{background:var(--card);border-radius:var(--r);padding:22px;box-shadow:var(--shadow);transition:.2s}
.pain-list li:nth-child(even){transform:translateY(18px)}
.pain-list li:hover{box-shadow:var(--shadow-h)}
.pain-list h3{font-size:17px;margin-bottom:8px;color:var(--wine)}
.pain-list p{font-size:14px;color:var(--muted)}

/* solution */
.ladder{position:relative;padding-left:0}
.ladder li{display:grid;grid-template-columns:120px 1fr;gap:24px;padding:22px 0;border-bottom:1px solid var(--line);position:relative}
.ladder li:last-child{border-bottom:0}
.ladder .age{font-family:var(--serif);font-size:30px;color:var(--ochre);line-height:1.15;font-variant-numeric:tabular-nums}
.ladder .age::before{content:"";display:inline-block;width:10px;height:10px;border-radius:50%;background:var(--ok);margin-right:10px;vertical-align:middle}
.ladder li.warn .age::before{background:var(--ochre)}
.ladder h3{font-size:17px;margin-bottom:6px}
.ladder dl{display:grid;grid-template-columns:auto 1fr;gap:4px 14px;font-size:14px;color:var(--muted)}
.ladder dt{color:var(--ink-green);font-weight:600;white-space:nowrap}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:s}
.steps li{position:relative;padding-top:26px;border-top:1px solid var(--line)}
.steps li::before{counter-increment:s;content:"0" counter(s);font-family:var(--serif);font-size:34px;color:rgba(176,118,60,.42);line-height:1;display:block;margin-bottom:10px}
.steps h3{font-size:16px;margin-bottom:6px}
.steps p{font-size:14px;color:var(--muted)}

/* shelf */
.shelf-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:24px}
.shelf-card{display:flex;flex-direction:column;gap:10px}
.poster{position:relative;aspect-ratio:2/3;border-radius:var(--r-sm);background:linear-gradient(155deg,#3d5546,#233129);display:flex;align-items:flex-end;padding:12px;color:#F2EADA;overflow:hidden;box-shadow:var(--shadow);transition:.2s}
.poster:hover{box-shadow:var(--shadow-h)}
.poster .pt{font-family:var(--serif);font-size:15px;font-weight:700;line-height:1.35}
.poster .py{font-size:12px;opacity:.8}
.shelf-grid li:nth-child(3n+2) .poster{background:linear-gradient(155deg,#4a5f52,#1F2B24)}
.shelf-grid li:nth-child(3n) .poster{background:linear-gradient(155deg,#a97d4a,#7a512a)}
.shelf-meta{display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:13px;color:var(--muted)}
.score{font-family:var(--serif);font-size:16px;color:var(--wine);font-variant-numeric:tabular-nums;font-weight:700}
.score small{font-size:11px;color:var(--muted);font-weight:400}

/* table */
.cmp-table{width:100%;border-collapse:collapse;background:var(--card);border-radius:var(--r);overflow:hidden;box-shadow:var(--shadow)}
.cmp-table th{background:var(--ink-green);color:#F6EFE3;font-size:14px;font-weight:600;text-align:left;padding:14px 16px;font-family:var(--sans)}
.cmp-table td{border-bottom:1px solid var(--line);padding:14px 16px;font-size:14px;color:var(--muted);vertical-align:top}
.cmp-table tbody tr:last-child td{border-bottom:0}
.cmp-table tbody tr:hover td{background:rgba(246,239,227,.6)}
.cmp-table td:first-child{color:var(--text);font-weight:600;font-family:var(--serif);font-size:15px}
.cmp-table td.age-cell{background:rgba(176,118,60,.12);color:var(--wine);font-weight:600;font-family:var(--serif)}
.cmp-table tbody tr:hover td.age-cell{background:rgba(176,118,60,.18)}

/* channels */
.chan-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:20px}
.chan{display:flex;flex-direction:column;gap:10px;background:var(--card);border-radius:var(--r);padding:24px 20px;box-shadow:var(--shadow);transition:.2s}
.chan:hover{transform:translateY(-2px);box-shadow:var(--shadow-h)}
.chan:hover h3{color:var(--wine)}
.chan svg{width:32px;height:32px;color:var(--ink-green);stroke-width:1.4}
.chan h3{font-size:16px;transition:color .2s}
.chan p{font-size:13.5px;color:var(--muted)}

/* rank */
.rank-list li{display:grid;grid-template-columns:48px 1fr 86px 74px 88px;align-items:center;gap:12px;min-height:56px;padding:6px 0;border-bottom:1px solid var(--line);font-size:14.5px}
.rank-list li:last-child{border-bottom:0}
.rank-no{font-family:var(--serif);font-size:26px;color:var(--ochre);text-align:right;font-variant-numeric:tabular-nums;line-height:1}
.rank-list li:nth-child(-n+3) .rank-no{color:var(--wine)}
.rank-name{font-weight:600}
.rank-heat,.rank-score{font-family:var(--serif);font-variant-numeric:tabular-nums;color:var(--muted);font-size:15px}
.rank-score{color:var(--wine);font-weight:700}

/* timeline */
.line-wrap{position:relative;padding-left:28px}
.line-wrap::before{content:"";position:absolute;left:6px;top:6px;bottom:6px;width:1px;background:var(--line)}
.line-wrap li{position:relative;padding:0 0 26px 0}
.line-wrap li:last-child{padding-bottom:0}
.line-wrap li::before{content:"";position:absolute;left:-27px;top:8px;width:10px;height:10px;border-radius:50%;background:var(--ochre)}
.line-wrap time{font-family:var(--serif);font-size:15px;color:var(--ochre);font-variant-numeric:tabular-nums}
.line-wrap h3{font-size:16px;margin:2px 0 4px}
.line-wrap p{font-size:14px;color:var(--muted)}

/* voices */
.voice-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:24px;align-items:start}
.voice{background:var(--card);border-radius:var(--r);padding:26px;box-shadow:var(--shadow)}
.voice:first-child{padding:34px}
.voice-head{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.avatar{width:40px;height:40px;border-radius:50%;background:var(--ochre);color:#FFFDF8;display:flex;align-items:center;justify-content:center;font-family:var(--serif);font-size:17px;flex:0 0 auto}
.voice-head span{font-size:13.5px;color:var(--muted)}
.voice p{font-family:var(--serif);font-size:16px;line-height:1.8;color:var(--text)}
.voice:first-child p{font-size:18px}
.voice .badge{margin-top:14px}

/* audience */
.aud-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 48px}
.aud-grid li{padding:18px 0 18px 18px;border-left:2px solid var(--line);margin-bottom:6px}
.aud-grid li:hover{border-left-color:var(--ochre)}
.aud-grid h3{font-size:16px;margin-bottom:4px}
.aud-grid p{font-size:14px;color:var(--muted)}
.aud-grid em{display:block;margin-top:6px;font-style:normal;font-size:13px;color:var(--teal)}

/* news */
.news-list li{display:grid;grid-template-columns:160px 1fr;gap:20px;padding:16px 0;border-bottom:1px solid var(--line)}
.news-list li:last-child{border-bottom:0}
.news-thumb{border-radius:var(--r-sm);overflow:hidden;background:linear-gradient(150deg,#4a5f52,#233129);aspect-ratio:4/3}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-list h3{font-size:16px;line-height:1.55}
.news-date{font-size:13px;color:var(--muted);margin-top:6px;font-variant-numeric:tabular-nums}

/* stats */
.bars li{display:grid;grid-template-columns:96px 1fr 56px;align-items:center;gap:16px;margin-bottom:16px;font-size:14px}
.bars .bar-track{height:14px;background:var(--paper);border-radius:999px;overflow:hidden}
.bars .bar-fill{display:block;height:100%;background:var(--ink-green);border-radius:999px}
.bars .bar-fill.hl{background:var(--ochre)}
.bars .bar-val{font-family:var(--serif);color:var(--ink-green);font-variant-numeric:tabular-nums;text-align:right}
.legend{margin-top:18px;font-size:13px;color:var(--muted);border-top:1px solid var(--line);padding-top:14px}

/* guard */
.guard-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.guard{display:flex;flex-direction:column;gap:8px}
.guard svg{width:26px;height:26px;color:var(--ochre)}
.guard h3{font-size:16px}
.guard p{font-size:14px;color:var(--muted)}

/* faq */
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 0;font-family:var(--serif);font-size:17px;font-weight:700}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";color:var(--ochre);font-size:22px;line-height:1;font-family:var(--sans);flex:0 0 auto}
.faq-item[open] summary::after{content:"–"}
.faq-item p{padding:0 0 20px;color:var(--muted);font-size:15px;max-width:78ch}

/* cta */
.cta{background:var(--ink-green);border-radius:18px;padding:44px;display:flex;align-items:center;justify-content:space-between;gap:32px;color:#F6EFE3;flex-wrap:wrap}
.cta h2{font-size:clamp(20px,2.2vw,28px);color:#F6EFE3;max-width:24ch}
.cta p{margin-top:10px;font-size:14.5px;color:rgba(246,239,227,.75);max-width:52ch}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* footer */
.site-footer{background:var(--paper-2);border-top:1px solid var(--line);padding:56px 0 0;margin-top:72px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.foot-grid h3{font-size:15px;margin-bottom:14px;color:var(--ink-green)}
.foot-grid p,.foot-grid li{font-size:13.5px;color:var(--muted);line-height:1.9}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.foot-brand .brand-mark{width:34px;height:34px;font-size:17px;border-radius:7px}
.foot-links li a:hover{color:var(--wine)}
.foot-plain li{border-bottom:1px dashed var(--line);padding-bottom:6px;margin-bottom:6px}
.foot-plain li:last-child{border-bottom:0}
.foot-bottom{margin-top:40px;border-top:1px solid var(--line);padding:18px 0;display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;font-size:12.5px;color:var(--muted)}

@media (max-width:1024px){
.hero-inner{grid-template-columns:1fr;gap:32px}
.hero-figure{max-width:420px}
.g5,.chan-grid{grid-template-columns:repeat(3,1fr)}
.g4,.kpi-grid,.steps,.guard-grid{grid-template-columns:repeat(2,1fr)}
.shelf-grid{grid-template-columns:repeat(4,1fr)}
.pain-wrap{grid-template-columns:1fr;gap:32px}
.voice-grid{grid-template-columns:1fr 1fr}
.voice:first-child{grid-column:1/-1}
.foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
.g2,.g3,.g4,.g5,.kpi-grid,.steps,.guard-grid,.chan-grid,.voice-grid,.aud-grid{grid-template-columns:1fr}
.pain-list{grid-template-columns:1fr}
.pain-list li:nth-child(even){transform:none}
.shelf-grid{grid-template-columns:repeat(3,1fr)}
.hero-stats{grid-template-columns:1fr 1fr}
.ladder li{grid-template-columns:100px 1fr;gap:16px}
.rank-list li{grid-template-columns:36px 1fr 66px;gap:10px}
.rank-heat,.rank-cat{display:none}
.cmp-table thead{display:none}
.cmp-table,.cmp-table tbody,.cmp-table tr,.cmp-table td{display:block;width:100%}
.cmp-table tr{border:1px solid var(--line);border-radius:var(--r);padding:8px 16px;margin-bottom:16px;background:var(--card)}
.cmp-table td{border:0;display:flex;gap:12px;padding:7px 0;background:transparent!important}
.cmp-table td::before{content:attr(data-label);flex:0 0 96px;color:var(--ink-green);font-size:13px;font-weight:600}
.header-tools .search-box{display:none}
.cta{padding:32px;flex-direction:column;align-items:flex-start}
.news-list li{grid-template-columns:110px 1fr;gap:14px}
}
@media (max-width:520px){
.sec{padding:52px 0}
.container{padding:0 18px}
.brand-text{font-size:15px}
.header-tools{gap:8px}
.ghost-btn{padding:0 12px;font-size:13px}
.icon-item{min-width:80px}
.hero-actions .btn{width:100%}
.hero-figure{max-width:100%}
.shelf-grid{grid-auto-flow:column;grid-template-columns:none;grid-auto-columns:62%;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:10px;gap:16px}
.shelf-grid li{scroll-snap-align:start}
.hero-stats{grid-template-columns:1fr}
.bars li{grid-template-columns:76px 1fr 48px;gap:10px;font-size:13px}
.voice:first-child{padding:24px}
.voice p,.voice:first-child p{font-size:15px}
.foot-grid{grid-template-columns:1fr;gap:28px}
.cmp-table td::before{flex:0 0 82px}
}

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}