/* BINLY V3.1 · 暖白明亮高级风 · 先讲人话 */
:root{
  --bg:#FDFCF8; --bg2:#F6F2E9; --card:#FFFFFF;
  --ink:#191817; --ink2:#5C574C; --ink3:#4A453B; --line:#E9E2D3;
  --gold:#B98A2F; --gold-soft:#F3E8CF; --gold-deep:#8A641F;
  --dark:#161310; --dark2:#211C17;
  --radius:18px;
  --shadow:0 18px 50px rgba(60,45,20,.10);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;background:var(--bg);color:var(--ink);line-height:1.7;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
.wrap{max-width:1160px;margin:0 auto;padding:0 24px}
section{padding:104px 0;scroll-margin-top:112px}
.hero{scroll-margin-top:112px}

/* ── 文字层级 ── */
.eyebrow{font-size:13px;letter-spacing:.24em;text-transform:uppercase;color:var(--gold-deep);font-weight:700;margin-bottom:18px}
.h-hero{font-size:clamp(44px,7vw,84px);line-height:1.18;font-weight:800;letter-spacing:.01em}
.h-sec{font-size:clamp(30px,4.4vw,52px);line-height:1.3;font-weight:800;letter-spacing:.01em}
.lead{font-size:clamp(16px,2vw,19px);color:var(--ink2);margin-top:18px}
.sec-head{max-width:720px;margin-bottom:56px}

/* ── 按钮 ── */
.btn{display:inline-block;padding:15px 34px;border-radius:999px;font-weight:700;font-size:16px;transition:.25s;border:1px solid transparent;white-space:nowrap}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--gold);transform:translateY(-2px)}
.btn-ghost{border-color:rgba(25,24,23,.25);color:var(--ink);background:rgba(255,255,255,.55);backdrop-filter:blur(6px)}
.btn-ghost:hover{border-color:var(--gold);color:var(--gold)}
.btn-sm{padding:12px 28px;font-size:15px}

/* ── 导航电话 ── */
.nav-phone{display:inline-flex;align-items:center;gap:6px;font-size:16px;font-weight:700;color:var(--gold-deep);white-space:nowrap;letter-spacing:.02em}
.nav-phone:hover{color:var(--gold)}
.nav-phone-m{display:none}
/* ── 导航 ── */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;transition:.3s;background:rgba(253,252,248,.86);backdrop-filter:blur(14px);border-bottom:1px solid transparent}
.nav.scrolled{border-bottom-color:var(--line)}
.nav-inner{max-width:1160px;margin:0 auto;padding:12px 24px;display:flex;align-items:center;gap:24px}
.logo{display:flex;align-items:center}
.logo-lockup{height:64px;width:auto}
.logo-lockup-f{height:46px;width:auto}
.nav-links{display:flex;gap:30px;margin:0 auto}
.nav-links a{font-size:17px;font-weight:600;color:var(--ink);letter-spacing:.03em;white-space:nowrap}
.nav-links a:hover{color:var(--gold)}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;margin-left:auto}
.nav-toggle span{width:24px;height:2px;background:var(--ink);border-radius:2px}

/* ── S1 Hero ── */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;overflow:hidden;padding:0}
.hero-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(100deg,rgba(253,252,248,.95) 0%,rgba(253,252,248,.78) 45%,rgba(253,252,248,.22) 78%,rgba(253,252,248,.06) 100%)}
.hero-content{position:relative;z-index:2;max-width:1160px;margin:0 auto;padding:130px 24px 90px;width:100%}
.hero-sub{font-size:clamp(19px,2.6vw,26px);font-weight:700;margin-top:26px}
.hero-tags{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.hero-tags span{font-size:15.5px;font-weight:700;padding:11px 22px;border-radius:999px;background:rgba(25,24,23,.88);color:#fff;box-shadow:0 8px 24px rgba(25,24,23,.18)}
.hero-note{margin-top:22px;color:var(--ink3);font-size:16.5px;max-width:640px}
.hero-cta{display:flex;gap:16px;margin-top:34px;flex-wrap:wrap}
.scroll-hint{position:absolute;left:50%;bottom:26px;width:26px;height:44px;border:2px solid rgba(25,24,23,.35);border-radius:14px;transform:translateX(-50%)}
.scroll-hint::after{content:"";position:absolute;left:50%;top:8px;width:4px;height:9px;margin-left:-2px;border-radius:3px;background:var(--gold);animation:hint 1.8s infinite}
@keyframes hint{0%{opacity:1;transform:translateY(0)}70%{opacity:0;transform:translateY(12px)}100%{opacity:0}}

/* ── S2 具体业务 · 能力索引 ── */
.services{background:var(--bg)}
.svc-grid{display:grid;grid-template-columns:340px 1fr;gap:64px;align-items:start}
.svc-side{position:sticky;top:120px}
.svc-row{display:grid;grid-template-columns:64px 1fr;gap:20px;padding:38px 0;border-top:1px solid var(--line)}
.svc-row:last-of-type{border-bottom:1px solid var(--line)}
.svc-no{font-size:15px;font-weight:800;color:var(--gold-deep);letter-spacing:.1em;padding-top:8px}
.svc-body h3{font-size:clamp(24px,3vw,32px);font-weight:800;margin-bottom:10px}
.svc-role{font-size:17px;color:var(--ink2);margin-bottom:18px}
.tags{display:flex;flex-wrap:wrap;gap:10px}
.tags span{font-size:14.5px;padding:8px 16px;border-radius:999px;background:var(--bg2);border:1px solid var(--line);color:var(--ink)}
.svc-note{margin-top:18px;font-size:14.5px;color:var(--gold-deep);font-weight:600}
.svc-scene{margin-top:28px;background:var(--bg2);border:1px dashed var(--gold);border-radius:var(--radius);padding:30px 32px}
.svc-scene-kicker{font-size:14px;font-weight:800;letter-spacing:.12em;color:var(--gold-deep);margin-bottom:16px}

/* ── S3 进化 ── */
.evolution{background:var(--bg2)}
.evo-visual{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);margin-bottom:56px}
.evo-visual img{width:100%;height:auto}
.evo-steps{list-style:none;display:grid;grid-template-columns:repeat(7,1fr);gap:12px;margin-bottom:48px}
.evo-steps li{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px 14px;text-align:center;position:relative;transition:.25s}
.evo-steps li:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--gold)}
.evo-steps li:not(:last-child)::after{content:"→";position:absolute;right:-14px;top:50%;transform:translateY(-50%);color:var(--gold);font-weight:700;z-index:2}
.evo-era{display:block;font-size:17px;font-weight:800;margin-bottom:8px}
.evo-now{color:var(--gold-deep)}
.evo-fix{display:block;font-size:14.5px;color:var(--ink3);line-height:1.65}
.evo-close{text-align:center;font-size:clamp(17px,2.2vw,22px)}
.evo-close strong{color:var(--gold-deep)}

/* ── S4 解法 · 问题→光径→解法 ── */
.solve{background:var(--bg)}
.solve-flow{max-width:920px;margin:0 auto 64px}
.solve-row{display:grid;grid-template-columns:1fr 120px 1.25fr;gap:24px;align-items:center;padding:30px 0;border-bottom:1px solid var(--line)}
.solve-row:first-child{border-top:1px solid var(--line)}
.solve-q{font-size:clamp(20px,2.6vw,27px);font-weight:800}
.solve-path{position:relative;height:2px;background:linear-gradient(90deg,transparent,var(--gold),transparent)}
.solve-path span{position:absolute;left:50%;top:50%;width:10px;height:10px;margin:-5px 0 0 -5px;border-radius:50%;background:var(--gold);box-shadow:0 0 18px 4px rgba(185,138,47,.55);animation:pulse 2.4s infinite}
@keyframes pulse{0%,100%{transform:scale(1);opacity:1}50%{transform:scale(1.5);opacity:.6}}
.solve-a{font-size:16.5px;color:var(--ink2)}
.solve-a strong{color:var(--gold-deep)}
.mc-close{max-width:760px;margin:0 auto;text-align:center;background:var(--bg2);border-radius:22px;padding:48px 40px}
.mc-line{font-size:clamp(18px,2.4vw,23px);font-weight:700;line-height:1.8}
.mc-try{margin-top:16px;font-size:16.5px;color:var(--gold-deep);font-weight:600}

/* ── S5 作品（深色） ── */
.works{background:var(--dark);color:#F5F1E8}
.works .lead{color:#B9B2A4}
.works .eyebrow{color:var(--gold)}
.showreel{max-width:960px;margin:0 auto 72px;padding:0 24px}
.showreel video{width:100%;border-radius:var(--radius);box-shadow:0 30px 80px rgba(0,0,0,.5);background:#000}
.work-cat{margin-bottom:56px}
.work-cat:last-child{margin-bottom:0}
.work-cat-label{font-size:14px;font-weight:800;letter-spacing:.3em;color:var(--gold);margin-bottom:20px;text-transform:uppercase}
.work-pair{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.work{border-radius:14px;overflow:hidden;position:relative;transition:.3s;margin:0}
.work:hover{transform:translateY(-6px)}
.work img{width:100%;height:300px;object-fit:cover}
.work figcaption{position:absolute;left:0;right:0;bottom:0;padding:44px 22px 18px;font-size:17px;font-weight:700;background:linear-gradient(transparent,rgba(0,0,0,.7))}

/* ── S6 客户 ── */
.clients{background:var(--bg)}
.client-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.client-cell{background:#fff;border:1px solid var(--line);border-radius:14px;padding:26px 18px;display:flex;align-items:center;justify-content:center;transition:.25s;min-height:118px}
.client-cell:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.client-cell img{max-height:66px;width:auto;max-width:100%;object-fit:contain}

/* ── S7 创始人 ── */
.founder{background:linear-gradient(180deg,var(--bg) 0%,#FBF6E9 60%,var(--bg) 100%);position:relative;overflow:hidden}
.founder::before{content:"";position:absolute;top:-120px;right:-120px;width:480px;height:480px;border-radius:50%;background:radial-gradient(circle,rgba(185,138,47,.16) 0%,transparent 65%);pointer-events:none}
.founder-grid{display:grid;grid-template-columns:380px 1fr;gap:64px;align-items:center}
.founder-photo img{border-radius:22px;box-shadow:var(--shadow);width:100%;aspect-ratio:4/5;object-fit:cover}
.founder-title{color:var(--ink2);margin:6px 0 30px}
.founder-text blockquote{font-size:clamp(17px,2.2vw,21px);line-height:1.9;border-left:4px solid var(--gold);padding-left:22px;margin-bottom:26px;color:var(--ink);font-weight:500}

/* ── S8 CTA（深色收束） ── */
.cta{background:var(--dark2);color:#F5F1E8;text-align:center}
.cta .lead{color:#B9B2A4}
.cta .sec-head{margin-left:auto;margin-right:auto;text-align:center}
.cta-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;max-width:960px;margin:0 auto;text-align:left}
.cta-card{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius);padding:38px 32px;transition:.25s;display:flex;flex-direction:column}
.cta-vcenter{justify-content:center}
.cta-card:hover{border-color:var(--gold);transform:translateY(-4px)}
.cta-main{border-color:rgba(185,138,47,.5)}
.cta-card h3{font-size:21px;font-weight:800;margin-bottom:10px}
.cta-card p{color:#B9B2A4;font-size:15px;margin-bottom:20px}
.cta-soon{color:#A79E90!important}
.cta-tel{display:flex;gap:14px;align-items:baseline;margin-bottom:14px!important}
.cta-tel span{font-size:14px;color:#8d8578;flex-shrink:0}
.cta-tel a{font-size:22px;font-weight:800;color:#F5F1E8;letter-spacing:.05em;white-space:nowrap}
.cta-tel a:hover{color:var(--gold)}
.qr-img{width:168px;height:168px;border-radius:14px;background:#fff;padding:10px;margin-bottom:22px;box-shadow:0 12px 32px rgba(0,0,0,.35)}
.cta .btn-ghost{color:#F5F1E8;border-color:rgba(255,255,255,.3);background:transparent}

/* ── 页脚 ── */
.footer{background:var(--bg2);padding:40px 0}
.footer-inner{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;font-size:15px;color:var(--ink2)}
.footer a{border-bottom:1px solid var(--gold)}

/* ── 需求表单弹窗 ── */
.form-modal{position:fixed;inset:0;z-index:200;display:none;align-items:center;justify-content:center;padding:20px}
.form-modal.open{display:flex}
.form-modal-backdrop{position:absolute;inset:0;background:rgba(10,8,6,.72);backdrop-filter:blur(4px)}
.form-modal-box{position:relative;background:var(--bg);border-radius:22px;max-width:520px;width:100%;max-height:92vh;overflow:auto;padding:40px 36px;box-shadow:0 40px 100px rgba(0,0,0,.5)}
.form-modal-close{position:absolute;top:12px;right:18px;background:none;border:none;font-size:30px;cursor:pointer;color:var(--ink2);line-height:1}
.form-modal-box h3{font-size:24px;font-weight:800;margin-bottom:8px}
.form-sub{color:var(--ink2);font-size:15px;margin-bottom:20px}
#demandForm label{display:block;font-size:14.5px;font-weight:700;margin-bottom:16px;color:var(--ink)}
#demandForm input,#demandForm select,#demandForm textarea{display:block;width:100%;margin-top:8px;padding:12px 14px;font-size:16px;border:1px solid var(--line);border-radius:10px;background:#fff;font-family:inherit;color:var(--ink)}
#demandForm input:focus,#demandForm select:focus,#demandForm textarea:focus{outline:none;border-color:var(--gold);box-shadow:0 0 0 3px rgba(185,138,47,.15)}
#demandForm textarea{resize:vertical}
#demandForm .btn{width:100%;margin-top:6px}
.form-privacy{font-size:13px;color:var(--ink2);margin:12px 0 0;text-align:center;line-height:1.7}
.form-privacy a{color:var(--gold);text-decoration:underline}
#demandSummary{background:var(--bg2);border:1px solid var(--line);border-radius:10px;padding:16px;font-size:14.5px;white-space:pre-wrap;font-family:inherit;margin:0 0 16px;color:var(--ink)}
.form-actions{display:flex;gap:12px;margin-top:20px;flex-wrap:wrap}
.form-actions .btn{flex:1;white-space:nowrap}
.hp{position:absolute!important;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden;opacity:0}
.hidden{display:none!important}
@media(max-width:640px){.form-modal-box{padding:32px 24px}}

/* ── reveal 动画 ── */
.reveal{opacity:1;transform:none;transition:opacity .7s ease,transform .7s ease}
.reveal.reveal-pending{opacity:0;transform:translateY(28px)}
.reveal.in{opacity:1;transform:none}

/* 内容默认可见；减少动态效果时保留完整内容与布局定位 */
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal,.reveal.reveal-pending,.reveal.in{opacity:1;transform:none;transition:none}
  .scroll-hint::after,.solve-path span{animation:none}
  .btn,.nav,.evo-steps li,.work,.client-cell,.cta-card{transition:none}
  .btn-primary:hover,.evo-steps li:hover,.work:hover,.client-cell:hover,.cta-card:hover{transform:none}
}

/* ── 响应式 ── */
@media(max-width:960px){
  section{padding:72px 0}
  .svc-grid{grid-template-columns:1fr;gap:40px}
  .svc-side{position:static}
  .evo-steps{grid-template-columns:repeat(2,1fr)}
  .evo-steps li:not(:last-child)::after{display:none}
  .solve-row{grid-template-columns:1fr;gap:12px;padding:26px 0}
  .solve-path{display:none}
  .work-pair{grid-template-columns:1fr}
  .client-grid{grid-template-columns:repeat(3,1fr)}
  .founder-grid{grid-template-columns:1fr;gap:36px}
  .founder-photo img{max-width:340px}
  .cta-grid{grid-template-columns:1fr}
}
.nav-cta-m{display:none}
@media(max-width:1100px){
  .nav-phone{display:none}
  .nav-phone-m{display:block;color:var(--gold-deep)!important;font-weight:700}
  .nav-cta-m{display:block;color:var(--gold-deep)!important;font-weight:800}
  .nav-links{display:none;position:absolute;top:100%;left:0;right:0;background:var(--bg);flex-direction:column;padding:12px 24px 20px;gap:4px;border-bottom:1px solid var(--line)}
  .nav-links.open{display:flex}
  .nav-links a{padding:12px 0;border-bottom:1px solid var(--line)}
  .nav-toggle{display:flex}
  .nav .btn-sm{display:none}
  .logo-lockup{height:42px}
  .hero-tags span{font-size:14px;padding:9px 18px}
  .hero-cta .btn{flex:1;text-align:center}
  .svc-row{grid-template-columns:1fr;gap:10px}
  .svc-no{padding-top:0}
  .client-grid{grid-template-columns:repeat(2,1fr)}
  .cta-tel a{font-size:20px;letter-spacing:.03em}
  .footer-inner{flex-direction:column;text-align:center}
}