/* =================================================================
 * steam_cogwheel · 蒸汽朋克 黄铜齿轮 维多利亚机械风
 * Variables · Reset · Mechanism · Components
 * ================================================================= */
:root{
    --brass:#B08D57;
    --brass-bright:#D4A574;
    --brass-dark:#7E5A2B;
    --copper:#A36A2D;
    --soot:#1F1308;
    --leather:#3A2418;
    --steam:#EFE4CB;
    --ivory:#F5E8C7;
    --rivet:radial-gradient(circle at 30% 30%,#E5C58C 0%,#7E5A2B 60%,#3A2418 100%);
    --metal:linear-gradient(180deg,#D4A574 0%,#B08D57 35%,#7E5A2B 100%);
    --leather-bg:repeating-linear-gradient(45deg,#3A2418 0 6px,#2B1B12 6px 12px);
}
*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0}
body.sc-mech{
    background:#2B1B12;
    background-image:var(--leather-bg);
    color:var(--ivory);
    font-family:"Old Standard TT","Georgia","Times New Roman",serif;
    font-size:16px;line-height:1.7;
}
a{color:inherit;text-decoration:none}
img,mip-img{max-width:100%;display:block}
.sc-frame{padding:0;margin:0}

/* HEADERINGS */
h1,h2,h3,h4,h5{font-family:"Cinzel","Trajan Pro","Georgia",serif;letter-spacing:.05em;font-weight:700}

/* COG ANIMATIONS */
@keyframes sc-spin{from{transform:rotate(0)}to{transform:rotate(360deg)}}
@keyframes sc-spin-r{from{transform:rotate(360deg)}to{transform:rotate(0)}}
.sc-cog{display:inline-block;color:var(--brass-bright)}
.sc-cog--spin{animation:sc-spin 8s linear infinite}

/* HEADER ============================== */
.sc-bar{
    background:linear-gradient(180deg,#3A2418,#1F1308);
    border-bottom:6px double var(--brass);
    position:sticky;top:0;z-index:50;
}
.sc-bar__rivets{
    height:8px;
    background-image:radial-gradient(circle,var(--brass-bright) 2px,transparent 2.5px);
    background-size:20px 8px;
    background-position:center;
}
.sc-bar__inner{
    display:grid;grid-template-columns:auto 1fr auto;align-items:center;
    gap:24px;padding:14px 36px;
}
.sc-emblem{display:flex;align-items:center;gap:14px;color:var(--brass-bright)}
.sc-emblem__name{display:flex;flex-direction:column;font-family:"Cinzel",serif;font-weight:900;font-size:22px;letter-spacing:.1em;color:var(--ivory)}
.sc-emblem__name small{font-size:10px;letter-spacing:.4em;color:var(--brass);font-weight:400}
.sc-pipe{display:flex;justify-content:center;gap:30px;flex-wrap:wrap}
.sc-pipe a{
    position:relative;padding:6px 0;font-size:13px;letter-spacing:.2em;
    color:var(--ivory);font-family:"Cinzel",serif;
}
.sc-pipe a:hover{color:var(--brass-bright)}
.sc-pipe a:hover::after{transform:scaleX(1)}
.sc-pipe a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--brass);transform:scaleX(0);transition:transform .3s}

/* LEVER BUTTON ======================== */
.sc-lever{
    position:relative;display:inline-flex;align-items:center;gap:14px;
    padding:14px 26px;
    background:var(--metal);color:var(--soot);
    font-family:"Cinzel",serif;font-weight:900;letter-spacing:.15em;font-size:14px;
    border:3px solid var(--brass-dark);border-radius:6px;
    box-shadow:inset 0 1px 0 #fff8,inset 0 -3px 0 #00000033,0 6px 0 var(--leather);
    text-transform:uppercase;
    transition:transform .15s,box-shadow .15s;
}
.sc-lever:hover{transform:translateY(2px);box-shadow:inset 0 1px 0 #fff8,inset 0 -3px 0 #00000033,0 4px 0 var(--leather)}
.sc-lever__bolt{
    width:14px;height:14px;border-radius:50%;
    background:var(--rivet);
    box-shadow:0 0 0 2px var(--brass-dark) inset;
}
.sc-lever--xl{padding:22px 40px;font-size:18px}

.sc-knob{
    display:inline-block;padding:14px 22px;
    border:2px solid var(--brass);border-radius:30px;
    color:var(--brass-bright);font-family:"Cinzel",serif;letter-spacing:.15em;font-size:13px;
}
.sc-knob:hover{background:var(--brass);color:var(--soot)}

/* HERO :: ENGINE ====================== */
.sc-engine{
    display:grid;grid-template-columns:1fr 1.3fr;gap:60px;
    padding:80px 60px;
    background:radial-gradient(ellipse at 25% 50%,#3A2418,#1F1308 70%);
    border-bottom:6px double var(--brass);
    position:relative;overflow:hidden;
}
.sc-engine__gauge{position:relative;display:flex;align-items:center;justify-content:center}
.sc-engine__cog{color:var(--brass-bright);filter:drop-shadow(0 0 20px #00000099)}
.sc-engine__cog--big{width:340px;height:340px;animation:sc-spin 18s linear infinite}
.sc-engine__cog--small{width:140px;height:140px;position:absolute;right:-20px;bottom:30px;color:var(--copper);animation:sc-spin-r 10s linear infinite}
.sc-engine__crest{display:inline-block;font-family:"Cinzel",serif;letter-spacing:.3em;font-size:11px;color:var(--brass);border:1px solid var(--brass);padding:6px 14px;margin-bottom:18px}
.sc-engine__title{font-size:64px;line-height:1;margin:0 0 20px;color:var(--ivory)}
.sc-engine__title span{display:block;font-size:22px;color:var(--brass-bright);letter-spacing:.4em;margin-top:14px;font-style:italic;font-weight:400}
.sc-engine__lead{font-size:18px;color:var(--steam);margin-bottom:30px;max-width:560px}
.sc-engine__valves{display:flex;gap:18px;margin-bottom:30px;flex-wrap:wrap}
.sc-valve{
    flex:1;min-width:120px;text-align:center;
    background:var(--leather-bg);border:2px solid var(--brass-dark);border-radius:8px;
    padding:18px 12px;
    box-shadow:inset 0 0 20px #00000077;
}
.sc-valve strong{display:block;font-family:"Cinzel",serif;font-size:34px;color:var(--brass-bright)}
.sc-valve span{display:block;font-size:11px;letter-spacing:.25em;color:var(--steam);margin-top:6px}
.sc-engine__actions{display:flex;gap:16px;flex-wrap:wrap}

/* SECTION HEADER ====================== */
.sc-h{display:flex;align-items:center;gap:18px;justify-content:center;padding:60px 28px 30px}
.sc-h h2{font-size:34px;color:var(--brass-bright);margin:0;text-align:center;letter-spacing:.06em}
.sc-h__rule{flex:1;max-width:160px;height:0;border-top:1px solid var(--brass);position:relative}
.sc-h__rule::before,.sc-h__rule::after{content:"";position:absolute;top:-3px;width:6px;height:6px;border-radius:50%;background:var(--brass-bright)}
.sc-h__rule::before{left:0}
.sc-h__rule::after{right:0}

/* GRID :: BRASS CABINET =============== */
.sc-grid{padding:0 36px 60px}
.sc-grid__deck{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;max-width:1280px;margin:0 auto}
.sc-cab{
    position:relative;padding:28px 18px 18px;
    background:linear-gradient(180deg,#3A2418,#1F1308);
    border:3px solid var(--brass);border-radius:10px;
    box-shadow:inset 0 0 30px #00000066,0 8px 0 var(--leather);
    transition:transform .2s;
}
.sc-cab:hover{transform:translateY(-4px)}
.sc-cab__rivet{position:absolute;width:14px;height:14px;border-radius:50%;background:var(--rivet);box-shadow:0 0 0 1px var(--brass-dark) inset}
.sc-cab__rivet--tl{top:8px;left:8px}
.sc-cab__rivet--tr{top:8px;right:8px}
.sc-cab__rivet--bl{bottom:8px;left:8px}
.sc-cab__rivet--br{bottom:8px;right:8px}
.sc-cab__plate{
    display:inline-block;padding:3px 10px;background:var(--metal);color:var(--soot);
    font-family:"Cinzel",serif;font-size:11px;letter-spacing:.2em;
    border:1px solid var(--brass-dark);border-radius:3px;
    margin-bottom:12px;
}
.sc-cab mip-img{aspect-ratio:4/3;border:2px solid var(--brass-dark);border-radius:4px;background:#000}
.sc-cab__name{font-size:16px;margin:14px 0 8px;color:var(--ivory)}
.sc-cab__rtp{display:inline-block;font-family:"Cinzel",serif;font-size:11px;letter-spacing:.2em;color:var(--brass-bright);border-bottom:1px dotted var(--brass)}

/* BELT :: CONVEYOR ==================== */
.sc-belt{padding:30px 0;background:linear-gradient(180deg,#1F1308,#3A2418);border-top:4px double var(--brass);border-bottom:4px double var(--brass)}
.sc-belt__head{display:flex;align-items:center;justify-content:center;gap:20px;padding:10px 0 26px}
.sc-belt__head h2{font-size:28px;color:var(--brass-bright);margin:0}
.sc-belt__bolt{width:14px;height:14px;border-radius:50%;background:var(--rivet)}
.sc-belt__rail{overflow:hidden;border-top:2px solid var(--brass-dark);border-bottom:2px solid var(--brass-dark);padding:20px 0;background:var(--leather-bg)}
.sc-belt__track{display:flex;gap:20px;width:max-content;animation:sc-belt 28s linear infinite}
.sc-belt__cell{flex:0 0 220px;text-align:center;color:var(--ivory)}
.sc-belt__cell mip-img{border:2px solid var(--brass);border-radius:4px;aspect-ratio:3/2}
.sc-belt__cell span{display:block;margin-top:8px;font-family:"Cinzel",serif;font-size:12px;letter-spacing:.15em;color:var(--brass-bright)}
@keyframes sc-belt{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* PROMO :: PATENT ===================== */
.sc-promo{padding:0 36px 60px}
.sc-promo__board{display:grid;grid-template-columns:repeat(2,1fr);gap:30px;max-width:1100px;margin:0 auto}
.sc-patent{
    position:relative;padding:36px 30px 30px 70px;
    background:#F5E8C7;color:var(--soot);
    border:2px solid var(--brass-dark);border-radius:6px;
    box-shadow:6px 6px 0 var(--leather),inset 0 0 80px #c8a76a55;
}
.sc-patent::before{content:"";position:absolute;left:0;top:0;bottom:0;width:14px;background:var(--metal);border-right:1px solid var(--brass-dark)}
.sc-patent__bolt{position:absolute;left:30px;top:30px;width:28px;height:28px;border-radius:50%;background:var(--rivet);box-shadow:0 0 0 2px var(--brass-dark) inset}
.sc-patent__bolt i{position:absolute;inset:6px;border-radius:50%;border:2px dashed var(--soot)}
.sc-patent h3{font-family:"Cinzel",serif;font-size:18px;margin:0 0 10px;color:var(--copper)}
.sc-patent p{margin:0;font-size:15px;line-height:1.7;color:#3a2418}

/* FAQ :: RADIO ACCORDION ============== */
.sc-faq{padding:0 36px 60px}
.sc-faq__book{
    max-width:880px;margin:0 auto;
    background:#F5E8C7;color:var(--soot);
    border:3px solid var(--brass-dark);border-radius:6px;
    box-shadow:0 8px 0 var(--leather);
    overflow:hidden;
}
.sc-faq__book input{position:absolute;opacity:0;pointer-events:none}
.sc-faq__q{
    display:block;padding:18px 26px;cursor:pointer;
    font-family:"Cinzel",serif;font-weight:700;letter-spacing:.05em;
    border-bottom:1px dashed var(--brass-dark);
    background:linear-gradient(180deg,#F5E8C7,#E5D4A8);
    transition:background .2s;
}
.sc-faq__q:hover{background:var(--brass-bright)}
.sc-faq__q::after{content:"▾";float:right;color:var(--copper);transition:transform .3s}
.sc-faq__a{max-height:0;overflow:hidden;transition:max-height .35s ease;background:#fff7e0;border-bottom:1px dashed var(--brass-dark)}
.sc-faq__a p{margin:0;padding:18px 26px;font-size:15px;line-height:1.85;color:#2b1b12}
.sc-faq__book input:checked + .sc-faq__q{background:var(--brass)}
.sc-faq__book input:checked + .sc-faq__q::after{transform:rotate(180deg)}
.sc-faq__book input:checked + .sc-faq__q + .sc-faq__a{max-height:400px}

/* CALL TO ACTION ====================== */
.sc-call{
    padding:80px 28px;
    background:linear-gradient(180deg,#3A2418,#1F1308);
    border-top:6px double var(--brass);border-bottom:6px double var(--brass);
    text-align:center;position:relative;
}
.sc-call__steam{display:block;font-family:"Cinzel",serif;font-style:italic;letter-spacing:.4em;color:var(--brass);margin-bottom:18px;font-size:13px}
.sc-call h2{font-size:42px;color:var(--ivory);margin:0 0 16px}
.sc-call p{color:var(--steam);max-width:560px;margin:0 auto 28px;font-size:17px}

/* FOOTER ============================== */
.sc-foot{background:#1F1308;padding:0 0 0;border-top:6px double var(--brass)}
.sc-foot__pipe{height:14px;background:var(--metal);border-bottom:2px solid var(--brass-dark);box-shadow:inset 0 -3px 0 #00000044}
.sc-foot__panel{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;padding:50px 36px 30px;max-width:1280px;margin:0 auto}
.sc-foot__col h4{font-family:"Cinzel",serif;font-size:22px;color:var(--brass-bright);margin:0 0 8px}
.sc-foot__col h5{font-family:"Cinzel",serif;font-size:13px;letter-spacing:.3em;color:var(--brass);margin:0 0 12px;border-bottom:1px solid var(--brass-dark);padding-bottom:6px}
.sc-foot__motto{color:var(--brass);font-style:italic;margin:0 0 14px}
.sc-foot__col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px}
.sc-foot__col ul a:hover{color:var(--brass-bright)}
.sc-gauge-mini{position:relative;width:100px;height:50px;border:2px solid var(--brass);border-bottom:none;border-radius:100px 100px 0 0;margin-bottom:10px;background:var(--leather-bg)}
.sc-gauge-mini__needle{position:absolute;left:50%;bottom:0;width:2px;height:42px;background:var(--brass-bright);transform-origin:bottom center;transform:rotate(35deg)}
.sc-gauge-mini__label{position:absolute;left:50%;bottom:6px;transform:translateX(-50%);font-family:"Cinzel",serif;font-size:11px;color:var(--brass-bright);letter-spacing:.2em}
.sc-foot__small{font-size:12px;color:var(--steam)}
.sc-foot__rivets{
    display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;
    padding:18px 36px;background:var(--leather-bg);
    border-top:2px solid var(--brass-dark);
    font-family:"Cinzel",serif;font-size:11px;letter-spacing:.2em;color:var(--brass);
}

/* ARTICLE LIST ======================== */
.sc-list{padding:60px 36px}
.sc-list__plate{text-align:center;margin-bottom:40px;padding:22px;border-top:2px solid var(--brass);border-bottom:2px solid var(--brass);max-width:760px;margin-left:auto;margin-right:auto}
.sc-list__plate h1{font-size:38px;color:var(--brass-bright);margin:0}
.sc-list__plate p{color:var(--steam);font-style:italic;margin:8px 0 0}
.sc-list__rolls{list-style:none;margin:0 auto;padding:0;max-width:1100px;display:flex;flex-direction:column;gap:24px;counter-reset:roll}
.sc-roll{
    display:grid;grid-template-columns:80px 280px 1fr;gap:24px;align-items:center;
    background:linear-gradient(180deg,#3A2418,#1F1308);
    border:2px solid var(--brass);border-radius:6px;
    padding:18px 24px;
    box-shadow:inset 0 0 30px #00000066;
}
.sc-roll__no{font-family:"Cinzel",serif;font-size:30px;color:var(--brass-bright);text-align:center}
.sc-roll__thumb mip-img{border:2px solid var(--brass-dark);border-radius:4px;aspect-ratio:8/5}
.sc-roll__body h3{font-family:"Cinzel",serif;font-size:20px;margin:0 0 10px;color:var(--ivory)}
.sc-roll__body p{margin:0 0 10px;color:var(--steam);font-size:14px}
.sc-roll__date{font-family:"Cinzel",serif;color:var(--brass);font-size:12px;letter-spacing:.2em}

/* ARTICLE DETAIL ====================== */
.sc-paper{
    max-width:920px;margin:60px auto;padding:50px 50px 40px;
    background:#F5E8C7;color:var(--soot);
    border:6px double var(--brass-dark);border-radius:8px;
    box-shadow:0 12px 0 var(--leather);
    background-image:radial-gradient(ellipse at center,#fffaf0 0%,#F5E8C7 70%);
}
.sc-paper__head{text-align:center;margin-bottom:24px}
.sc-paper__seal{display:inline-block;padding:6px 16px;background:var(--copper);color:var(--ivory);font-family:"Cinzel",serif;letter-spacing:.3em;font-size:11px;border-radius:30px}
.sc-paper__head h1{font-size:36px;margin:18px 0 10px;color:var(--soot)}
.sc-paper__meta{display:flex;justify-content:center;flex-wrap:wrap;gap:18px;color:var(--brass-dark);font-style:italic;font-size:14px}
.sc-paper__divider{height:0;border-top:1px solid var(--brass-dark);position:relative;margin:24px 0}
.sc-paper__divider::after{content:"⚙";position:absolute;left:50%;top:-12px;transform:translateX(-50%);width:28px;height:24px;background:#F5E8C7;text-align:center;color:var(--copper);font-size:18px}
.sc-paper__body{font-size:16px;line-height:1.95;color:#2b1b12}
.sc-paper__body img{margin:14px 0;border:2px solid var(--brass-dark);border-radius:4px}
.sc-paper__foot{text-align:center;padding-top:30px;margin-top:20px;border-top:1px dashed var(--brass-dark)}

/* 404 ================================= */
.sc-404{min-height:65vh;display:grid;place-items:center;text-align:center;padding:60px 36px;position:relative}
.sc-404__cogs{position:relative;width:240px;height:200px;margin:0 auto 20px}
.sc-404__cog{position:absolute;color:var(--brass-bright)}
.sc-404__cog--big{left:0;top:0;width:160px;height:160px;animation:sc-spin 14s linear infinite}
.sc-404__cog--small{right:10px;bottom:0;width:110px;height:110px;color:var(--copper);animation:sc-spin-r 9s linear infinite}
.sc-404__num{font-family:"Cinzel",serif;font-size:120px;margin:0;color:var(--ivory);letter-spacing:.1em}
.sc-404__txt{color:var(--steam);font-style:italic;margin-bottom:30px}

/* RESPONSIVE ========================== */
@media (max-width:960px){
    .sc-bar__inner{grid-template-columns:1fr auto;padding:12px 20px}
    .sc-pipe{display:none}
    .sc-engine{grid-template-columns:1fr;padding:50px 24px;gap:30px}
    .sc-engine__cog--big{width:220px;height:220px}
    .sc-engine__title{font-size:42px}
    .sc-grid__deck{grid-template-columns:repeat(2,1fr)}
    .sc-promo__board{grid-template-columns:1fr}
    .sc-foot__panel{grid-template-columns:1fr}
    .sc-roll{grid-template-columns:60px 1fr;gap:14px;padding:14px}
    .sc-roll__thumb{display:none}
    .sc-paper{padding:30px 20px}
    .sc-call h2{font-size:30px}
}