/* ============================================================
   Prime Green Power — shared styles
   v2 「国际企业风」— 参照 Shizen Energy / Greencells：
   白底、大幅实景图、单一绿色、扁平克制、留白充分。
   ============================================================ */
:root{
  --bg:#ffffff;
  --surface:#f5f7f5;          /* 浅灰绿分区底 */
  --ink:#1c2b23;              /* 近黑的深墨绿 */
  --ink-soft:#5e6d64;
  --line:#e5e9e5;
  --brand:#00a05a;            /* 唯一强调绿 */
  --brand-deep:#007a45;
  --footer-bg:#122019;
  --header-bg:rgba(18,32,25,.92);
  --header-scrim:rgba(18,32,25,.55);
  --radius:6px;
  --maxw:1520px;
  --font:'Manrope','Noto Sans SC','Sarabun',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  --font-display:var(--font);          /* 主题可换标题字体 */
  --hero-img:url('img/hero.jpg?v=7');
  --hero-ov-a:rgba(12,26,18,.62);
  --hero-ov-b:rgba(12,26,18,.18);
  --hero-ov-c:rgba(12,26,18,.25);
  --hero-g:#6fe3a5;                    /* hero 高亮词 */
  --eyebrow-lt:#5ecf96;                /* 深底上的 kicker */
  --cta-img:url('img/cta.jpg?v=7');
  --cta-ov:rgba(10,42,26,.78);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.85;font-size:15.5px;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 clamp(20px,3.6vw,72px)}
@media(min-width:2100px){:root{--maxw:1760px}}
.section{padding:110px 0}
.section.tight{padding:76px 0}
.bg-surface{background:var(--surface)}
.bg-dark{background:var(--footer-bg);color:#fff}

/* ---- Type ---- */
.eyebrow{color:var(--brand);font-weight:700;font-size:.8rem;letter-spacing:.22em;text-transform:uppercase;margin-bottom:18px;display:block}
h1,h2,h3{line-height:1.3;letter-spacing:.005em;text-wrap:balance}
.title{font-size:clamp(1.7rem,3.2vw,2.5rem);font-weight:700;font-family:var(--font-display)}
.subtitle{font-size:clamp(1.2rem,2vw,1.5rem);font-weight:700;font-family:var(--font-display)}
.lead{color:var(--ink-soft);font-size:1.02rem;max-width:640px;margin-top:18px}
.bg-dark .lead{color:rgba(255,255,255,.78)}
.bg-dark .eyebrow,.hero .eyebrow{color:var(--eyebrow-lt)}
.center{text-align:center}
.sec-head{max-width:720px;margin:0 auto 60px}
.sec-head.center{text-align:center}
.sec-head.center .lead{margin-left:auto;margin-right:auto}

/* ---- Buttons：扁平、小圆角、无特效 ---- */
.btn{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:.92rem;padding:14px 30px;border-radius:var(--radius);transition:background .2s,color .2s,border-color .2s,transform .15s;cursor:pointer;border:1px solid transparent;letter-spacing:.02em}
.btn::after{content:"→";font-weight:400;transition:transform .2s}
.btn:hover::after{transform:translateX(4px)}
.btn:active{transform:translateY(1px)}
.btn svg{display:none}
/* 统一：所有按钮悬停 = 品牌深绿底 + 白字 */
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-deep);border-color:var(--brand-deep);color:#fff}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.7);color:#fff}
.btn-ghost:hover{background:var(--brand-deep);border-color:var(--brand-deep);color:#fff}
.btn-outline{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-outline:hover{background:var(--brand-deep);border-color:var(--brand-deep);color:#fff}

/* ============ Header ============ */
header{position:fixed;top:0;left:0;right:0;z-index:60;transition:background .3s,box-shadow .3s}
.nav{display:flex;align-items:center;justify-content:space-between;padding:16px clamp(20px,3.6vw,72px);max-width:var(--maxw);margin:0 auto}
.brand{display:flex;align-items:center;gap:12px;color:#fff}
.brand .mk{width:40px;height:40px;flex:0 0 40px;border-radius:6px;object-fit:cover}
.brand .txt b{display:block;font-weight:800;font-size:1.02rem;line-height:1.1}
.brand .txt small{display:block;font-size:.58rem;font-weight:600;letter-spacing:.24em;opacity:.75;text-transform:uppercase}
.brand-logo{height:36px;width:auto;display:block}
.footer-logo{height:40px;width:auto}
.menu{display:flex;align-items:center;gap:34px}
.menu a{position:relative;color:rgba(255,255,255,.92);font-weight:600;font-size:.93rem;padding:6px 0;transition:color .2s}
.menu a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--brand);transition:width .25s}
.menu a:hover::after,.menu a.active::after{width:100%}
.tools{display:flex;align-items:center;gap:14px}
.pill{display:flex;border:1px solid rgba(255,255,255,.45);border-radius:var(--radius);overflow:hidden}
.pill button{background:transparent;color:rgba(255,255,255,.85);border:0;padding:6px 12px;font-size:.8rem;font-weight:700;cursor:pointer;font-family:var(--font);transition:.2s}
.pill button.on{background:#fff;color:var(--ink)}
.burger{display:none;background:none;border:0;cursor:pointer;flex-direction:column;gap:5px;padding:6px}
.burger span{width:24px;height:2px;background:#fff;display:block;transition:.3s}
header:not(.scrolled){background:linear-gradient(180deg,var(--header-scrim),transparent)}
header.scrolled,body.inner header{background:var(--header-bg);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);box-shadow:0 10px 30px -18px rgba(0,0,0,.5)}

/* ============ Hero（首页）：全幅实景 + 一句口号 ============ */
.hero{position:relative;min-height:100dvh;display:flex;align-items:center;color:#fff;overflow:hidden}
.hero-bg{position:absolute;inset:0;background:
   linear-gradient(to top,var(--hero-ov-a) 0%,var(--hero-ov-b) 45%,var(--hero-ov-c) 100%),
   var(--hero-img);
   background-size:cover;background-position:center}
.orb{display:none}
.hero .wrap{position:relative;z-index:2;padding-top:80px}
.hero h1{font-size:clamp(2.3rem,5.2vw,4.2rem);font-weight:800;line-height:1.25;max-width:20ch;text-shadow:0 2px 30px rgba(0,0,0,.25);font-family:var(--font-display)}
.hero h1 .g{color:var(--hero-g)}
.hero .tagline{font-size:1.08rem;color:rgba(255,255,255,.88);max-width:52ch;margin-top:26px}
.hero-cta{display:flex;gap:16px;margin-top:40px;flex-wrap:wrap}
.hero-badges{display:flex;gap:0;margin-top:64px;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.28)}
.hero-badges>div{padding:22px 44px 0 0;margin-right:44px}
.hero-badges b{display:block;font-size:2rem;font-weight:800;font-variant-numeric:tabular-nums}
.hero-badges b span{font-size:inherit;font-weight:inherit;color:inherit}
.hero-badges>div>span{font-size:.85rem;color:rgba(255,255,255,.75)}
.anim{opacity:0;transform:translateY(18px);animation:heroUp .8s cubic-bezier(.2,.7,.2,1) forwards}
@keyframes heroUp{to{opacity:1;transform:none}}
.d1{animation-delay:.15s}.d2{animation-delay:.3s}.d3{animation-delay:.45s}.d4{animation-delay:.6s}.d5{animation-delay:.75s}
.scrolldown{display:none}

/* ============ Page hero（内页）：浅色简洁带 ============ */
.page-hero{position:relative;overflow:hidden;padding:172px 0 76px;color:#fff;background:#0c1a12}
.page-hero::before{display:none}
.page-hero .wrap{position:relative;z-index:1}
.page-hero h1{font-size:clamp(1.9rem,3.8vw,2.9rem);font-weight:800;color:#fff}
.page-hero p{color:rgba(255,255,255,.85);margin-top:16px;max-width:62ch;font-size:1.02rem}
.crumbs{font-size:.82rem;color:rgba(255,255,255,.8);margin-bottom:20px;letter-spacing:.04em}
.crumbs a:hover{color:#fff}

/* ============ Stats：白底大数字 + 细线（Greencells 式） ============ */
.stats{background:var(--bg);border-block:1px solid var(--line)}
.stats::before{display:none}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.stat{padding:56px 28px;text-align:left;border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat .num{font-size:clamp(2.2rem,3.6vw,3.2rem);font-weight:800;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1.1}
.stat .lbl{font-size:.9rem;color:var(--ink-soft);margin-top:10px}

/* ============ Grids & cards：扁平、细边、无阴影 ============ */
.grid-2{display:grid;grid-template-columns:1.05fr 1fr;gap:72px;align-items:center}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.card{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:38px 32px;transition:border-color .25s,transform .25s}
.card::before{display:none}
.card:hover{border-color:var(--brand);transform:translateY(-4px)}
.card .ic{width:44px;height:44px;border-radius:0;background:transparent;color:var(--brand);display:grid;place-items:center;margin-bottom:22px}
.card .ic svg{width:36px;height:36px;stroke-width:1.5}
.card h3{font-size:1.15rem;font-weight:700;margin-bottom:12px}
.card p{color:var(--ink-soft);font-size:.93rem}
.card .no{position:absolute;top:0;right:0;font-size:0;color:transparent}

/* about image */
.figure{position:relative}
.figure img{border-radius:var(--radius);width:100%;height:460px;object-fit:cover}
/* 玻璃拟态徽标（贴在图片上） */
.figure .badge{position:absolute;left:22px;bottom:22px;border-radius:14px;padding:14px 20px;display:flex;align-items:center;gap:13px;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.34);
  backdrop-filter:blur(16px) saturate(160%);-webkit-backdrop-filter:blur(16px) saturate(160%);
  box-shadow:0 12px 34px -14px rgba(0,0,0,.5);color:#fff;transition:transform .3s,background .3s}
.figure:hover .badge{transform:translateY(-3px);background:rgba(255,255,255,.22)}
.figure .badge .ic{width:auto;height:auto;border-radius:0;background:transparent;color:#fff;display:grid;place-items:center;font-size:1.25rem;text-shadow:0 1px 6px rgba(0,0,0,.35)}
.figure .badge b{font-size:1.32rem;font-weight:800;display:block;line-height:1;color:#fff;text-shadow:0 1px 8px rgba(0,0,0,.35)}
.figure .badge span{font-size:.78rem;color:rgba(255,255,255,.9);text-shadow:0 1px 6px rgba(0,0,0,.3)}
.checks{margin-top:28px;display:grid;gap:0}
.checks li{list-style:none;display:flex;gap:14px;align-items:flex-start;color:var(--ink-soft);padding:16px 0;border-top:1px solid var(--line);font-size:.95rem}
.checks li:last-child{border-bottom:1px solid var(--line)}
.checks li svg{flex:0 0 20px;color:var(--brand);margin-top:5px}
.checks li b{color:var(--ink)}

/* ============ Timeline (process) ============ */
.timeline{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.tl{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:34px 30px;transition:border-color .25s}
.tl:hover{border-color:var(--brand)}
.tl .step{font-size:.74rem;font-weight:700;color:var(--brand);letter-spacing:.16em;text-transform:uppercase}
.tl h3{font-size:1.14rem;margin:10px 0 16px;font-weight:700}
.tl ul{list-style:none;display:grid;gap:10px}
.tl li{padding-left:20px;position:relative;color:var(--ink-soft);font-size:.93rem}
.tl li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;background:var(--brand)}

/* ============ 全流程服务：左图舞台 + 右侧竖排切换 ============ */
.flow{display:grid;grid-template-columns:minmax(0,1.62fr) minmax(0,1fr);align-items:center;gap:0}
.flow-stage{position:relative;aspect-ratio:16/9;border-radius:var(--radius);overflow:hidden;background:var(--ink)}
.flow-panel{position:absolute;inset:0;opacity:0;visibility:hidden;transition:opacity .55s ease,visibility .55s}
.flow-panel.is-active{opacity:1;visibility:visible}
.flow-panel img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transform:scale(1.03);transition:transform 1.2s cubic-bezier(.2,.7,.2,1)}
.flow-panel.is-active img{transform:none}
.flow-panel::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(8,20,13,.9) 0%,rgba(8,20,13,.62) 34%,rgba(8,20,13,.08) 66%)}
.flow-copy{position:absolute;left:0;right:0;bottom:0;z-index:2;color:#fff;padding:clamp(24px,3.2vw,46px)}
.flow-head{display:flex;align-items:flex-end;gap:14px;margin-bottom:clamp(12px,1.6vw,20px)}
.flow-head .no{font-size:clamp(46px,4.6vw,80px);font-weight:800;line-height:.82;letter-spacing:.02em;color:transparent;-webkit-text-stroke:2px rgba(255,255,255,.7);font-family:var(--font-display)}
.flow-head h3{font-size:clamp(1.02rem,1.2vw,1.24rem);font-weight:700;padding-bottom:2px}
.flow-copy p{font-size:clamp(.86rem,.95vw,.98rem);color:rgba(255,255,255,.9);line-height:1.75;max-width:74ch;text-shadow:0 1px 10px rgba(0,0,0,.3)}
.flow-nav{position:relative;z-index:2;padding-left:clamp(24px,3vw,56px)}
.flow-nav .title{margin-bottom:clamp(30px,4vw,58px)}
.flow-tabs{display:grid;gap:clamp(14px,2.4vw,34px)}
.flow-tab{display:flex;align-items:center;gap:clamp(14px,1.4vw,22px);width:100%;padding:clamp(14px,1.5vw,22px) clamp(16px,1.5vw,26px);
  background:transparent;border:0;border-radius:var(--radius);cursor:pointer;text-align:left;color:var(--ink);
  font-family:var(--font);font-size:clamp(.92rem,1.02vw,1.04rem);font-weight:700;line-height:1.4;
  transition:background .35s cubic-bezier(.2,.7,.2,1),color .35s,margin .45s cubic-bezier(.2,.7,.2,1),box-shadow .35s}
.flow-tab .ic{flex:0 0 auto;display:grid;place-items:center;color:var(--ink-soft);transition:color .35s}
.flow-tab .ic svg{width:clamp(26px,2.1vw,34px);height:clamp(26px,2.1vw,34px)}
.flow-tab:hover{background:var(--bg)}
.flow-tab:hover .ic{color:var(--brand)}
.flow-tab.is-active{background:var(--brand);color:#fff;margin-left:calc(-1 * clamp(24px,7vw,124px));box-shadow:0 22px 44px -26px rgba(0,0,0,.55)}
.flow-tab.is-active .ic{color:#fff}
html[data-theme="forest"] .flow-tab.is-active{color:#0a130d}
html[data-theme="forest"] .flow-tab.is-active .ic{color:#0a130d}

/* ============ 户用 / 企业方案切换 ============ */
.sol-ctrl{display:flex;justify-content:center;gap:10px;margin-bottom:clamp(34px,4vw,58px);flex-wrap:wrap}
.sol-pick{position:relative;overflow:hidden;border:1px solid var(--line);background:var(--bg);color:var(--ink-soft);
  border-radius:var(--radius);padding:11px 30px;font-family:var(--font);font-size:.92rem;font-weight:700;cursor:pointer;
  transition:color .25s,border-color .25s,background .25s}
.sol-pick:hover{color:var(--ink);border-color:var(--brand)}
.sol-pick.is-active{background:var(--brand);border-color:var(--brand);color:#fff}
html[data-theme="forest"] .sol-pick.is-active{color:#0a130d}
.sol-pick .bar{position:absolute;left:0;bottom:0;height:3px;width:0;background:rgba(255,255,255,.75)}
.sol-pick.is-active.is-timing .bar{animation:solBar var(--sol-dur,8s) linear forwards}
@keyframes solBar{from{width:0}to{width:100%}}
.sol-track{display:grid}
.sol-slide{grid-area:1/1;opacity:0;visibility:hidden;transform:translateY(14px);transition:opacity .5s ease,transform .5s cubic-bezier(.2,.7,.2,1),visibility .5s}
.sol-slide.is-active{opacity:1;visibility:visible;transform:none}

/* ============ 业主核心收益：实景大卡 + 三栏展开 ============ */
.benefit-band{position:relative;background-size:cover;background-position:center;color:#fff;overflow:hidden;isolation:isolate;
  border-radius:var(--radius)}
.benefit-band::before{content:"";position:absolute;inset:0;z-index:0;
  background:linear-gradient(to bottom,rgba(6,24,15,.5) 0%,rgba(6,24,15,.12) 34%,rgba(6,24,15,.34) 100%)}
.benefit-band .bb-head{position:relative;z-index:5;text-align:center;padding:clamp(56px,6vw,88px) 24px 0}
.benefit-band .eyebrow{color:rgba(255,255,255,.8)}
.benefit-band .title{color:#fff;text-shadow:0 2px 22px rgba(6,24,15,.4)}
.bb-cols{position:relative;z-index:1;display:grid;grid-template-columns:repeat(3,1fr);min-height:clamp(330px,26vw,420px)}
.bb-col{position:relative;display:flex;align-items:flex-end;padding:clamp(26px,3vw,48px) clamp(28px,3.4vw,54px);cursor:default;
  border-left:1px solid rgba(255,255,255,.2);transition:border-color .4s}
.bb-col:first-child{border-left:0}
.bb-col::before{content:"";position:absolute;left:0;right:0;bottom:0;top:-100vh;opacity:0;transition:opacity .45s ease;
  background:linear-gradient(165deg,rgba(0,150,86,.72) 0%,rgba(0,96,58,.9) 100%)}
.bb-col.is-active::before{opacity:1}
html[data-theme="ocean"] .bb-col::before{background:linear-gradient(165deg,rgba(10,99,201,.72) 0%,rgba(8,60,130,.9) 100%)}
html[data-theme="dawn"] .bb-col::before{background:linear-gradient(165deg,rgba(201,106,30,.72) 0%,rgba(132,62,10,.9) 100%)}
.bb-in{position:relative;z-index:1;width:100%}
.bb-ic{display:block;margin-bottom:clamp(16px,1.8vw,26px)}
.bb-ic svg{width:clamp(32px,2.6vw,42px);height:clamp(32px,2.6vw,42px);filter:drop-shadow(0 2px 10px rgba(0,0,0,.35))}
.bb-col h3{font-size:clamp(1rem,1.15vw,1.14rem);font-weight:700;text-shadow:0 1px 12px rgba(0,0,0,.4)}
.bb-list{list-style:none;display:grid;gap:10px;margin-top:0;max-height:0;opacity:0;overflow:hidden;
  transition:max-height .5s cubic-bezier(.2,.7,.2,1),opacity .4s ease,margin-top .5s}
.bb-col.is-active .bb-list{max-height:440px;opacity:1;margin-top:clamp(16px,1.8vw,24px)}
.bb-list li{position:relative;padding-left:18px;font-size:.9rem;line-height:1.7;color:rgba(255,255,255,.94)}
.bb-list li::before{content:"·";position:absolute;left:2px;top:-1px;font-weight:800;font-size:1.15rem}
.bb-col:focus-visible{outline:2px solid #fff;outline-offset:-6px}

/* ============ Scenario cards（图片场景） ============ */
.scene{position:relative;border-radius:var(--radius);overflow:hidden;min-height:340px;display:flex;align-items:flex-end;color:#fff}
.scene img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .5s ease;z-index:0}
.scene:hover img{transform:scale(1.04)}
.scene::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(12,26,18,.85),rgba(12,26,18,.05) 60%);z-index:1}
.scene .txt{position:relative;z-index:2;padding:28px}
.scene .txt h3{font-size:1.25rem;margin-bottom:8px;font-weight:700}
.scene .txt p{font-size:.9rem;color:rgba(255,255,255,.82)}

/* ============ Benefit ============ */
.benefit{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:34px 30px;transition:border-color .25s}
.benefit:hover{border-color:var(--brand)}
.benefit .tag{display:inline-flex;align-items:center;gap:10px;font-weight:700;color:var(--ink);margin-bottom:16px;font-size:1.02rem}
.benefit .tag .dot{width:32px;height:32px;display:grid;place-items:center;border:1px solid var(--line);border-radius:var(--radius)}
.benefit ul{list-style:none;display:grid;gap:12px}
.benefit li{padding-left:22px;position:relative;color:var(--ink-soft);font-size:.92rem}
.benefit li::before{content:"—";position:absolute;left:0;top:0;color:var(--brand);font-weight:700}

/* ============ Projects：图上文下的干净卡片 ============ */
.proj{background:var(--bg);border-radius:var(--radius);overflow:hidden;transition:.25s;border:1px solid var(--line)}
.proj:hover{border-color:var(--brand)}
.proj .ph{height:210px;position:relative;overflow:hidden}
.proj .ph img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.proj:hover .ph img{transform:scale(1.05)}
.proj .cap{position:absolute;bottom:0;left:0;z-index:2;background:var(--brand);color:#fff;font-weight:700;font-size:.82rem;padding:6px 14px;letter-spacing:.03em}
.proj .body{padding:20px 22px 24px}
.proj .client{font-size:1.06rem;font-weight:700}
.proj .loc{color:var(--ink-soft);font-size:.88rem;margin-top:6px;display:flex;align-items:center;gap:6px}

/* ============ Partners：无框文字行（logo 行的替代） ============ */
.partners{display:grid;grid-template-columns:repeat(6,1fr);gap:0;border-top:1px solid var(--line);border-left:1px solid var(--line)}
.partner{aspect-ratio:5/2.6;background:var(--bg);border-right:1px solid var(--line);border-bottom:1px solid var(--line);display:grid;place-items:center;font-weight:600;color:var(--ink-soft);font-size:.92rem;transition:.25s;text-align:center;padding:10px}
.partner:hover{color:var(--brand);background:var(--surface)}
.partner img{max-width:84%;max-height:56px;object-fit:contain;transition:.25s}
.partner:hover img{transform:scale(1.05)}

/* ============ CTA band：满幅实景 + 深绿罩 ============ */
.cta-band{background:
   linear-gradient(var(--cta-ov),var(--cta-ov)),
   var(--cta-img) center/cover;
   color:#fff;border-radius:var(--radius);padding:clamp(60px,8vw,100px) 24px;text-align:center}
.cta-band h2{font-family:var(--font-display)}
.cta-band::before{display:none}
.cta-band h2{font-size:clamp(1.7rem,3.2vw,2.6rem);font-weight:800}
.cta-band p{color:rgba(255,255,255,.85);margin:16px auto 34px;max-width:54ch}

/* ============ Contact ============ */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px}
.cinfo li{list-style:none;display:flex;gap:16px;align-items:flex-start;padding:18px 0;border-top:1px solid var(--line);margin:0}
.cinfo li:last-child{border-bottom:1px solid var(--line)}
.cinfo .ic{width:44px;height:44px;border-radius:var(--radius);border:1px solid var(--line);background:var(--bg);color:var(--brand);display:grid;place-items:center;flex:0 0 44px;font-size:1.1rem}
.cinfo b{display:block;font-size:.78rem;color:var(--ink-soft);font-weight:600;letter-spacing:.06em}
.cinfo span{font-size:1rem;font-weight:600}
form{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:36px}
.field{margin-bottom:18px}
.field label{font-size:.84rem;font-weight:700;display:block;margin-bottom:8px}
.field input,.field textarea{width:100%;border:1px solid var(--line);border-radius:var(--radius);padding:12px 14px;font-family:var(--font);font-size:.95rem;transition:border-color .2s;background:var(--bg)}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--brand)}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:16px}

/* ============ Footer ============ */
footer{background:var(--footer-bg);color:rgba(255,255,255,.66);padding:72px 0 30px}
.f-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:44px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.12)}
footer .brand{color:#fff;margin-bottom:18px}
footer p{font-size:.9rem;max-width:36ch}
footer h4{color:#fff;font-size:.8rem;margin-bottom:18px;letter-spacing:.18em;text-transform:uppercase;font-weight:700}
footer ul{list-style:none}
footer li{margin-bottom:10px;font-size:.9rem}
footer a{transition:color .2s}
footer a:hover{color:#fff}
.f-bottom{display:flex;justify-content:space-between;align-items:center;padding-top:24px;font-size:.82rem;flex-wrap:wrap;gap:10px}

/* ============ Reveal ============ */
.reveal{opacity:0;transform:translateY(24px);transition:.7s cubic-bezier(.2,.7,.2,1);transition-delay:var(--d,0s)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}.reveal,.anim{opacity:1!important;transform:none!important}}

/* ============ Responsive ============ */
@media(max-width:980px){
  .grid-4,.partners{grid-template-columns:repeat(3,1fr)}
  .grid-3,.timeline{grid-template-columns:1fr 1fr}
  .grid-2,.contact-grid{grid-template-columns:1fr;gap:44px}
  /* 全流程：图在上，切换条在下 */
  .flow{grid-template-columns:1fr;gap:26px}
  .flow-nav{padding-left:0;order:-1}
  .flow-nav .title{margin-bottom:22px}
  .flow-tabs{grid-template-columns:repeat(3,1fr);gap:10px}
  .flow-tab{flex-direction:column;align-items:flex-start;gap:10px;padding:16px 18px;border:1px solid var(--line);background:var(--bg)}
  .flow-tab.is-active{margin-left:0;border-color:var(--brand)}
  .flow-stage{aspect-ratio:4/3}
  .flow-copy p{font-size:.88rem}
  .stats-grid{grid-template-columns:1fr 1fr}
  .stat:nth-child(2){border-right:0}
  .stat{border-top:1px solid var(--line)}
  .stat:nth-child(-n+2){border-top:0}
  .f-grid{grid-template-columns:1fr 1fr}
}
/* 导航折叠：菜单已有 6 项 + 三语 + 按钮，窄于 1080px 就会挤，提前收进汉堡 */
@media(max-width:1080px){
  .menu{display:none;position:absolute;top:100%;left:0;right:0;background:var(--bg);flex-direction:column;align-items:flex-start;
        padding:18px clamp(20px,3.6vw,72px) 22px;gap:16px;border-bottom:1px solid var(--line);box-shadow:0 18px 40px -24px rgba(0,0,0,.45)}
  .menu.open{display:flex}
  .menu a{color:var(--ink);width:100%}
  .menu a::after{display:none}
  .menu a:hover,.menu a.active{color:var(--brand)}
  .burger{display:flex}
  .hide-sm{display:none}
}
/* 核心收益大卡：窄屏改为纵向堆叠，三栏内容全部展开 */
@media(max-width:900px){
  .bb-cols{grid-template-columns:1fr;min-height:0}
  .bb-col{border-left:0;border-top:1px solid rgba(255,255,255,.18);padding:30px clamp(20px,5vw,36px) 34px}
  .bb-col::before{opacity:1;background:linear-gradient(to bottom,rgba(6,24,15,.42),rgba(6,24,15,.78))}
  .bb-col.is-active::before{opacity:1}
  .bb-list{max-height:none;opacity:1;margin-top:16px}
  .benefit-band .bb-head{padding-top:clamp(48px,9vw,64px)}
}
@media(max-width:680px){
  .section{padding:70px 0}
  .grid-3,.grid-4,.timeline,.row2{grid-template-columns:1fr}
  .flow-tabs{grid-template-columns:1fr}
  .flow-tab{flex-direction:row;align-items:center;gap:14px}
  .flow-stage{aspect-ratio:auto;min-height:clamp(420px,118vw,540px)}
  .flow-copy{padding:22px 20px}
  .flow-head .no{font-size:44px}
  .sol-pick{padding:10px 20px;font-size:.86rem}
  .partners{grid-template-columns:repeat(3,1fr)}
  .figure img{height:300px}
  .scene{min-height:280px}
  .proj .ph{height:190px}
  .hero-badges>div{padding-right:28px;margin-right:28px}
  .page-hero{padding:140px 0 56px}
  .figure .badge{left:14px}
  .hide-sm{display:none}
  footer{padding:48px 0 22px}
  .f-grid{grid-template-columns:1fr 1fr;gap:26px 20px;padding-bottom:30px}
  .f-grid>div:first-child{grid-column:1/-1}
  footer p{max-width:none;font-size:.86rem}
  .f-bottom{padding-top:18px;font-size:.78rem}
}
/* 小屏顶栏防溢出：logo 与语言按钮收紧 */
@media(max-width:480px){
  .nav{padding:12px 16px}
  .brand-logo{height:27px}
  .tools{gap:9px}
  .pill button{padding:5px 9px;font-size:.72rem}
  .partners{grid-template-columns:repeat(2,1fr)}
  .hero-badges>div{padding:18px 20px 0 0;margin-right:20px}
  .hero-badges b{font-size:1.6rem}
}
/* Thai renders taller; keep line-height comfortable */
html[lang="th"] body{line-height:1.9}

/* ============================================================
   主题包（data-theme on <html>）— 不只是换色：
   排版气质、组件形态、hero 处理、分区节奏一起变。
   ============================================================ */

/* ---------- 主题「深林」forest：暗色高端版 ----------
   深墨绿底、亮薄荷点睛、按钮高亮反色。适合投资方场合的
   沉稳、贵气；夜间观感极佳。 */
html[data-theme="forest"]{
  --bg:#0f1b14;
  --surface:#152418;
  --ink:#eef4ee;
  --ink-soft:#93a698;
  --line:#24382b;
  --brand:#3ce089;
  --brand-deep:#2bbc70;
  --footer-bg:#0a130d;
  --header-bg:rgba(10,19,13,.92);
  --header-scrim:rgba(10,19,13,.55);
  --hero-ov-a:rgba(8,16,11,.88);
  --hero-ov-b:rgba(8,16,11,.42);
  --hero-ov-c:rgba(8,16,11,.5);
  --hero-g:#3ce089;
  --eyebrow-lt:#3ce089;
  --cta-ov:rgba(8,20,13,.85);
}
html[data-theme="forest"] .btn-primary{background:var(--brand);color:#0a130d}
html[data-theme="forest"] .btn-outline{border-color:var(--ink);color:var(--ink)}
/* 深林主题：统一为亮薄荷绿底 + 深色字 */
html[data-theme="forest"] .btn-primary:hover,
html[data-theme="forest"] .btn-ghost:hover,
html[data-theme="forest"] .btn-outline:hover{background:#66eba4;border-color:#66eba4;color:#0a130d}
html[data-theme="forest"] .pill button.on{color:#0f1b14}
html[data-theme="forest"] header.scrolled .pill button.on,
html[data-theme="forest"] body.inner header .pill button.on{background:var(--brand);color:#0a130d}
html[data-theme="forest"] .stat .num{color:var(--brand)}
html[data-theme="forest"] .card:hover,
html[data-theme="forest"] .tl:hover,
html[data-theme="forest"] .benefit:hover,
html[data-theme="forest"] .proj:hover{border-color:var(--brand);box-shadow:0 0 44px -18px rgba(60,224,137,.35)}
html[data-theme="forest"] .cap{color:#0a130d}
html[data-theme="forest"] .page-hero{background:linear-gradient(to bottom,#0c1610,var(--surface))}
html[data-theme="forest"] footer{color:rgba(238,244,238,.55)}

/* ---------- 主题「曙光」dawn：暖色衬线版 ----------
   暖沙纸底、赭金点睛、标题换衬线、直角组件。
   编辑感与人文温度，适合品牌叙事。 */
html[data-theme="dawn"]{
  --bg:#fbf8f1;
  --surface:#f3ecdf;
  --ink:#2b2118;
  --ink-soft:#7c6f5f;
  --line:#e6dcc9;
  --brand:#c96a1e;
  --brand-deep:#a5540f;
  --footer-bg:#241a11;
  --header-bg:rgba(36,26,17,.94);
  --header-scrim:rgba(36,26,17,.6);
  --radius:0px;
  --font-display:'Noto Serif SC',serif;
  --hero-img:url('img/hero.jpg?v=7');
  --hero-ov-a:rgba(40,22,6,.68);
  --hero-ov-b:rgba(40,22,6,.2);
  --hero-ov-c:rgba(40,22,6,.28);
  --hero-g:#ffc98a;
  --eyebrow-lt:#ffc98a;
  --cta-img:url('img/cta.jpg?v=7');
  --cta-ov:rgba(46,26,8,.8);
}
html[data-theme="dawn"] .title,
html[data-theme="dawn"] .subtitle,
html[data-theme="dawn"] .hero h1,
html[data-theme="dawn"] .page-hero h1,
html[data-theme="dawn"] .cta-band h2{font-weight:700;letter-spacing:.01em}
html[data-theme="dawn"] .hero h1{line-height:1.35}
html[data-theme="dawn"] .stat .num{font-family:'Noto Serif SC',serif;font-weight:900}
html[data-theme="dawn"] .eyebrow{letter-spacing:.3em}
html[data-theme="dawn"] .eyebrow::before{content:"— "}
html[data-theme="dawn"] .card,
html[data-theme="dawn"] .tl,
html[data-theme="dawn"] .benefit{border-color:transparent;border-top:1px solid var(--ink);border-radius:0;background:transparent;padding-left:0;padding-right:0}
html[data-theme="dawn"] .card:hover,
html[data-theme="dawn"] .tl:hover,
html[data-theme="dawn"] .benefit:hover{border-top-color:var(--brand);transform:none}
html[data-theme="dawn"] .proj{border-radius:0}
html[data-theme="dawn"] .btn{border-radius:0;letter-spacing:.08em}
html[data-theme="dawn"] .stats{background:var(--surface);border-block:0}
html[data-theme="dawn"] .stat{border-right-color:var(--ink)}
html[data-theme="dawn"] .partners{border-color:var(--ink)}
html[data-theme="dawn"] .partner{border-color:var(--ink);background:transparent}

/* ---------- 主题「海洋」ocean：蓝色科技版 ----------
   冷蓝灰、深海军蓝数据带、胶囊按钮、卡片顶线。
   金融与技术的信任感，适合国际投标场合。 */
html[data-theme="ocean"]{
  --bg:#ffffff;
  --surface:#f1f5f9;
  --ink:#122033;
  --ink-soft:#5a6b80;
  --line:#e0e7ef;
  --brand:#0a63c9;
  --brand-deep:#084b99;
  --footer-bg:#0c1829;
  --header-bg:rgba(12,24,41,.92);
  --header-scrim:rgba(12,24,41,.55);
  --radius:10px;
  --hero-img:url('img/hero.jpg?v=7');
  --hero-ov-a:rgba(7,20,38,.72);
  --hero-ov-b:rgba(7,20,38,.28);
  --hero-ov-c:rgba(7,20,38,.4);
  --hero-g:#7cc3ff;
  --eyebrow-lt:#7cc3ff;
  --cta-ov:rgba(8,26,50,.82);
}
html[data-theme="ocean"] .btn{border-radius:999px}
html[data-theme="ocean"] .eyebrow{background:var(--surface);display:inline-block;padding:6px 16px;border-radius:999px;letter-spacing:.16em}
html[data-theme="ocean"] .hero .eyebrow,
html[data-theme="ocean"] .bg-dark .eyebrow{background:rgba(255,255,255,.12)}
html[data-theme="ocean"] .card{border-top:3px solid var(--brand)}
html[data-theme="ocean"] .stats{background:var(--ink);border-block:0}
html[data-theme="ocean"] .stat{border-right-color:rgba(255,255,255,.14)}
html[data-theme="ocean"] .stat .num{color:#7cc3ff}
html[data-theme="ocean"] .stat .lbl{color:rgba(255,255,255,.66)}
html[data-theme="ocean"] .proj .cap{border-radius:0 var(--radius) 0 0}
html[data-theme="ocean"] .figure img{border-radius:16px}
html[data-theme="ocean"] .cta-band{border-radius:20px}

/* ============ 主题切换器（预览工具，选定后移除） ============ */
.theme-fab{position:fixed;right:20px;bottom:20px;z-index:99;font-family:var(--font)}
.theme-fab .tf-btn{width:52px;height:52px;border-radius:50%;border:1px solid var(--line);cursor:pointer;background:var(--bg);color:var(--brand);font-size:1.25rem;box-shadow:0 12px 34px -14px rgba(0,0,0,.4);display:grid;place-items:center;transition:transform .25s}
.theme-fab .tf-btn:hover{transform:scale(1.08)}
.theme-panel{position:absolute;right:0;bottom:64px;width:250px;background:var(--bg);border:1px solid var(--line);border-radius:14px;box-shadow:0 24px 60px -20px rgba(0,0,0,.4);padding:14px;display:none}
.theme-panel.open{display:block}
.theme-panel h5{font-size:.75rem;color:var(--ink-soft);letter-spacing:.14em;text-transform:uppercase;margin:2px 4px 10px}
.theme-opt{display:flex;align-items:center;gap:10px;width:100%;padding:10px;border:1px solid transparent;border-radius:10px;background:none;cursor:pointer;font-family:var(--font);font-size:.88rem;font-weight:600;color:var(--ink);transition:.2s;text-align:left}
.theme-opt:hover{background:var(--surface)}
.theme-opt.on{border-color:var(--brand)}
.theme-opt .sw{display:flex;flex:0 0 auto}
.theme-opt .sw i{width:14px;height:14px;border-radius:50%;margin-right:-5px;border:2px solid var(--bg)}
.theme-opt small{display:block;font-weight:400;color:var(--ink-soft);font-size:.72rem;line-height:1.4}

/* ============================================================
   社会责任（CSR）页面
   ============================================================ */

/* 三支柱 */
.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;margin-top:56px;text-align:center}
.pillar .pi{width:64px;height:64px;margin:0 auto 18px;display:grid;place-items:center;color:var(--brand)}
.pillar .pi svg{width:44px;height:44px}
.pillar h3{font-size:1.12rem;font-weight:700;margin-bottom:12px}
.pillar p{color:var(--ink-soft);font-size:.94rem;max-width:34ch;margin:0 auto}

/* 通栏理念带 */
.csr-feature{position:relative;background-size:cover;background-position:center;padding:clamp(84px,10vw,140px) 0;color:#fff;text-align:center}
.csr-feature .title{color:#fff;margin-bottom:26px}
.csr-feature p{color:rgba(255,255,255,.9);max-width:74ch;margin:0 auto 14px;font-size:1.02rem}

/* 执行机制 */
.csr-steps{--csr-line:212px;list-style:none;width:max-content;max-width:100%;margin:0 auto;padding:0;position:relative}
.csr-steps::before{content:"";position:absolute;left:var(--csr-line);top:20px;bottom:20px;width:2px;background:var(--line);transform:translateX(-1px)}
.csr-steps li{display:grid;grid-template-columns:44px 132px minmax(220px,auto);align-items:center;gap:0 24px;padding:19px 0;position:relative}
.csr-steps li::after{content:"";position:absolute;left:var(--csr-line);top:50%;width:11px;height:11px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 3px var(--surface);transform:translate(-50%,-50%)}
.csr-steps .si{width:40px;height:40px;display:grid;place-items:center;color:var(--ink-soft)}
.csr-steps .si svg{width:30px;height:30px}
.csr-steps b{font-size:1.02rem;font-weight:700}
.csr-steps .sd{color:var(--ink-soft);font-size:.95rem;padding-left:22px}

@media(max-width:860px){
  .pillars{grid-template-columns:1fr;gap:38px}
  .csr-steps{--csr-line:22px;width:100%;max-width:460px}
  .csr-steps li{grid-template-columns:44px minmax(0,1fr);gap:4px 18px;padding:16px 0}
  .csr-steps li::after{display:none}
  .csr-steps .si{grid-row:span 2;background:var(--surface);position:relative;z-index:1}
  .csr-steps .sd{padding-left:0}
}

/* 首页 · 社会责任模块 */
.csr-home-photos{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:52px}
.csr-home-photos figure{margin:0;overflow:hidden;border-radius:var(--radius)}
.csr-home-photos img{width:100%;height:clamp(220px,26vw,340px);object-fit:cover;transition:transform .6s}
.csr-home-photos figure:hover img{transform:scale(1.04)}
.csr-home-text{max-width:820px;margin:0 auto;text-align:center}
.csr-home-text .lead{margin-left:auto;margin-right:auto}
@media(max-width:680px){
  .csr-home-photos{grid-template-columns:1fr;gap:14px;margin-bottom:38px}
  .csr-home-photos img{height:210px}
}