/* ============================================================
   A FREE SUN — Website v2  (night blue / purple / orange)
   静态站 · 6 页 · 无框架
   ============================================================ */

:root{
  --navy-950:#080F1C;
  --navy-900:#0C1626;
  --navy-850:#101D33;
  --navy-800:#142440;
  --navy-700:#1C3054;
  --line:rgba(255,255,255,.08);
  --purple:#6C3FA8;          /* logo 紫 */
  --purple-soft:#A98BE0;
  --purple-dim:#3A2B5E;
  --orange:#F05A28;
  --orange-soft:#FF8A4C;
  --ink:#EAF0FA;             /* 正文 */
  --ink-2:#B7C2D6;           /* 次级 */
  --muted:#8593AC;
  --radius:16px;
  --font-d:'Sora',system-ui,sans-serif;
  --font-b:'Inter',system-ui,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font-b);background:var(--navy-950);color:var(--ink);line-height:1.65;font-size:15.5px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:1180px;margin:0 auto;padding:0 26px}

/* ---------- Nav（吸顶，紫底橙高亮参考老站气质，但配色为夜蓝） ---------- */
.nav{position:fixed;inset:0 0 auto 0;z-index:60;background:rgba(82,42,132,.94);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,.12);
  box-shadow:0 4px 24px rgba(0,0,0,.35)}
.nav-inner{max-width:1240px;margin:0 auto;padding:12px 26px;display:flex;align-items:center;gap:34px}
.nav .logo img{height:44px;width:auto}
.nav-links{display:flex;gap:6px;margin-left:auto;align-items:center;flex-wrap:wrap}
.nav-links a{font-size:.86rem;font-weight:600;color:#fff;padding:9px 15px;border-radius:10px;
  transition:all .18s;letter-spacing:.01em;white-space:nowrap}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.14)}
.nav-links a.active{color:#fff;background:var(--orange);box-shadow:0 4px 14px rgba(240,90,40,.4)}
.nav-burger{display:none;margin-left:auto;background:none;border:0;cursor:pointer}
.nav-burger span{display:block;width:22px;height:2px;background:#fff;margin:5px 0;border-radius:2px}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:150px 0 84px;
  background:linear-gradient(165deg,#0A1220 0%,#101D33 55%,#1B1440 100%)}
.hero::before{content:"";position:absolute;top:-260px;right:-180px;width:680px;height:680px;border-radius:50%;
  background:radial-gradient(circle,rgba(124,77,255,.28) 0%,rgba(240,90,40,.12) 45%,transparent 70%);
  filter:blur(6px)}
.hero::after{content:"";position:absolute;bottom:-300px;left:-200px;width:560px;height:560px;border-radius:50%;
  background:radial-gradient(circle,rgba(124,77,255,.12) 0%,transparent 65%)}
.hero .wrap{position:relative;z-index:1}
.kicker{font-size:.74rem;letter-spacing:.3em;text-transform:uppercase;color:var(--orange-soft);margin-bottom:20px;font-weight:600}
h1{font-family:var(--font-d);font-weight:800;font-size:clamp(2.3rem,4.8vw,3.9rem);line-height:1.1;letter-spacing:-.015em}
h1 em,h2 em{font-style:normal;color:var(--orange-soft)}
.hero-sub{max-width:600px;margin:24px 0 34px;color:var(--ink-2);font-size:1.04rem}
.cta-row{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-block;font-weight:600;font-size:.92rem;padding:13px 28px;border-radius:999px;transition:all .18s;cursor:pointer;border:0}
.btn:active{transform:scale(.97)}
.btn-orange{background:linear-gradient(120deg,var(--orange-soft),var(--orange));color:#fff;box-shadow:0 8px 24px rgba(240,90,40,.35)}
.btn-orange:hover{transform:translateY(-1px);box-shadow:0 10px 30px rgba(240,90,40,.5)}
.btn-purple{background:var(--purple);color:#fff;box-shadow:0 8px 24px rgba(108,63,168,.3)}
.btn-purple:hover{transform:translateY(-1px)}
.btn-line{border:1.5px solid rgba(255,255,255,.28);color:#fff}
.btn-line:hover{border-color:var(--purple-soft);color:var(--purple-soft)}

/* ---------- 数据条 ---------- */
.stats{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:18px;
  border-top:1px solid var(--line);padding-top:28px;margin-top:56px}
.stats strong{display:block;font-family:var(--font-d);font-size:1.65rem;color:#fff;margin-bottom:2px}
.stats strong i{font-style:normal;color:var(--orange-soft)}
.stats span{font-size:.82rem;color:var(--muted)}

/* ---------- 通用 section ---------- */
section{padding:78px 0}
.sec-head{margin-bottom:36px}
.sec-head h2{font-family:var(--font-d);font-size:clamp(1.6rem,2.8vw,2.2rem);font-weight:700;letter-spacing:-.01em}
.sec-head p{color:var(--muted);margin-top:8px;max-width:640px}
.tag-purple{display:inline-block;font-size:.72rem;font-weight:700;letter-spacing:.18em;text-transform:uppercase;
  color:var(--purple-soft);margin-bottom:12px}

/* ---------- 首页品类切换器 ---------- */
.switcher{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:30px}
.switcher button{font-size:.84rem;font-weight:600;padding:9px 18px;border-radius:999px;cursor:pointer;
  background:transparent;color:var(--ink-2);border:1px solid var(--line);transition:all .18s;font-family:inherit}
.switcher button:hover{border-color:var(--purple-soft);color:#fff}
.switcher button.on{background:var(--purple);border-color:var(--purple);color:#fff;
  box-shadow:0 4px 14px rgba(108,63,168,.35)}
.grid-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.pcard{background:var(--navy-850);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  transition:transform .2s,border-color .2s,box-shadow .25s;display:flex;flex-direction:column}
.pcard:hover{transform:translateY(-5px);border-color:rgba(124,77,255,.5);box-shadow:0 18px 40px rgba(0,0,0,.4)}
.pcard .ph{background:#fff;padding:18px;display:grid;place-items:center;aspect-ratio:4/3}
.pcard .ph img{max-height:100%;object-fit:contain}
.pcard .pc-body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1}
.pcat{font-size:.7rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--purple-soft);margin-bottom:8px}
.pcard h3{font-family:var(--font-d);font-size:1.06rem;margin-bottom:6px}
.pcard p{color:var(--ink-2);font-size:.88rem;flex:1}
.pcard .more{margin-top:16px;color:var(--orange-soft);font-weight:600;font-size:.86rem}

/* ---------- 产品子页 ---------- */
.crumb{font-size:.8rem;color:var(--muted);margin-bottom:18px}
.crumb a:hover{color:var(--purple-soft)}
.p-hero{display:grid;grid-template-columns:1.05fr .95fr;gap:50px;align-items:center}
.p-hero .shot{background:#fff;border-radius:20px;padding:26px;box-shadow:0 20px 60px rgba(0,0,0,.45)}
.p-hero .shot img{width:100%;object-fit:contain}
.p-hero h1{font-size:clamp(1.9rem,3.4vw,2.8rem)}
.p-hero .lede{color:var(--ink-2);margin:18px 0 22px;max-width:520px}
.spec-chips{display:flex;flex-wrap:wrap;gap:9px;margin-top:6px}
.spec-chips span{font-size:.78rem;font-weight:600;color:#fff;background:rgba(124,77,255,.2);
  border:1px solid rgba(124,77,255,.45);padding:6px 13px;border-radius:999px}

/* benefit / feature 板块 */
.benefits{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.bcard{background:var(--navy-850);border:1px solid var(--line);border-radius:var(--radius);padding:24px 22px}
.bcard .ic{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;font-size:1.25rem;
  background:rgba(240,90,40,.14);border:1px solid rgba(240,90,40,.3);margin-bottom:14px}
.bcard h3{font-family:var(--font-d);font-size:1rem;margin-bottom:6px}
.bcard p{color:var(--ink-2);font-size:.88rem}

/* 场景图 + 配置图 */
.duo{display:grid;grid-template-columns:1.2fr .8fr;gap:22px;align-items:stretch}
.duo figure{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);position:relative;margin:0}
.duo img{width:100%;height:100%;object-fit:cover}
.duo figcaption{position:absolute;left:0;right:0;bottom:0;padding:26px 18px 12px;font-size:.8rem;color:#fff;
  background:linear-gradient(transparent,rgba(5,10,20,.85))}
.duo .white{background:#fff;display:grid;place-items:center;padding:20px}
.duo .white img{object-fit:contain}

/* 规格对比表 */
.tbl{width:100%;border-collapse:collapse;font-size:.88rem}
.tbl th{font-family:var(--font-d);font-size:.8rem;text-transform:uppercase;letter-spacing:.08em;
  color:var(--purple-soft);text-align:left;padding:11px 14px;border-bottom:1.5px solid rgba(124,77,255,.4)}
.tbl td{padding:11px 14px;border-bottom:1px solid var(--line);color:var(--ink-2)}
.tbl td:first-child{color:#fff;font-weight:600;white-space:nowrap}
.tbl tr{break-inside:avoid}
.tbl-note{font-size:.78rem;color:var(--muted);margin-top:10px}

/* 包装清单 */
.pack{display:grid;grid-template-columns:repeat(2,1fr);gap:8px 26px;list-style:none}
.pack li{display:flex;gap:10px;align-items:baseline;color:var(--ink-2);font-size:.9rem;padding:7px 0;
  border-bottom:1px dashed rgba(255,255,255,.1)}
.pack li::before{content:"✓";color:var(--orange-soft);font-weight:700}

/* 应用场景条 */
.scenes{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.scenes figure{margin:0;background:var(--navy-850);border:1px solid var(--line);border-radius:14px;overflow:hidden}
.scenes img{aspect-ratio:4/3;object-fit:cover;width:100%}
.scenes figcaption{padding:11px 14px;font-size:.82rem;color:var(--ink-2)}

/* CTA 条 */
.cta-band{background:linear-gradient(120deg,#1B1440,#221033 60%,#2A150E);border-top:1px solid var(--line);
  border-bottom:1px solid var(--line)}
.cta-band .wrap{text-align:center;padding:64px 26px}
.cta-band h2{font-family:var(--font-d);font-size:clamp(1.5rem,2.6vw,2.1rem);margin-bottom:12px}
.cta-band p{color:var(--ink-2);max-width:560px;margin:0 auto 28px}

/* About */
.values{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.vcard{background:var(--navy-850);border:1px solid var(--line);border-top:3px solid var(--purple);border-radius:14px;padding:24px 20px}
.vcard h3{font-family:var(--font-d);font-size:1.05rem;color:var(--purple-soft);margin-bottom:10px}
.vcard p{color:var(--ink-2);font-size:.87rem}
.timeline{border-left:2px solid rgba(124,77,255,.4);padding-left:32px;display:flex;flex-direction:column;gap:32px;max-width:760px}
.tl{position:relative}
.tl::before{content:"";position:absolute;left:-40px;top:7px;width:14px;height:14px;border-radius:50%;
  background:var(--orange);box-shadow:0 0 0 5px rgba(240,90,40,.15)}
.tl h4{font-family:var(--font-d);font-size:1.02rem;margin-bottom:6px}
.tl p{color:var(--ink-2);font-size:.9rem}
.v-num{font-family:var(--font-d);font-size:.72rem;font-weight:700;letter-spacing:.12em;color:var(--orange);margin-bottom:12px}
.shot{position:relative}
.shot-label{position:absolute;left:22px;bottom:16px;font-family:var(--font-d);font-weight:800;
  font-size:clamp(2.2rem,4.5vw,3.4rem);letter-spacing:.04em;color:#fff;
  text-shadow:0 2px 18px rgba(0,0,0,.65);pointer-events:none}
.tl .y{font-family:var(--font-d);font-weight:800;color:var(--orange-soft)}
.tl h3{font-family:var(--font-d);font-size:1.08rem;margin:4px 0 4px}
.tl p{color:var(--ink-2);font-size:.92rem}
.contact-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:18px;max-width:1040px}
.ccard{background:var(--navy-850);border:1px solid var(--line);border-radius:var(--radius);padding:28px;text-align:center}
.ccard .ic{width:48px;height:48px;margin:0 auto 14px;border-radius:50%;display:grid;place-items:center;
  background:rgba(124,77,255,.18);border:1px solid rgba(124,77,255,.4);font-size:1.25rem}
.ccard h3{font-family:var(--font-d);font-size:1rem;margin-bottom:6px}
.ccard p{color:var(--ink-2);font-size:.9rem}
.ccard a:hover{color:var(--orange-soft)}

/* Footer */
footer{border-top:1px solid var(--line);background:var(--navy-950);padding:52px 0 26px;color:var(--muted)}
.f-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:34px;padding-bottom:36px;border-bottom:1px solid var(--line)}
.f-grid img{height:40px;margin-bottom:14px}
.f-grid h4{color:#fff;font-family:var(--font-d);font-size:.92rem;margin-bottom:12px}
.f-grid a{display:block;margin-bottom:8px;font-size:.87rem;transition:color .18s}
.f-grid a:hover{color:var(--orange-soft)}
.f-copy{text-align:center;padding-top:22px;font-size:.78rem}

/* ---------- Chat ---------- */
.chat-fab{position:fixed;right:22px;bottom:22px;z-index:90;width:58px;height:58px;border-radius:50%;border:0;cursor:pointer;
  background:linear-gradient(135deg,var(--purple) 0%,#4A2B78 100%);color:#fff;display:grid;place-items:center;
  box-shadow:0 10px 28px rgba(108,63,168,.5);transition:transform .2s}
.chat-fab:hover{transform:scale(1.07)}
.chat-fab svg{width:26px;height:26px}
.chat-fab .dot{position:absolute;top:3px;right:3px;width:12px;height:12px;border-radius:50%;background:var(--orange);border:2px solid #0A1220}
.chat-panel{position:fixed;right:22px;bottom:94px;z-index:95;width:372px;max-width:calc(100vw - 32px);height:540px;
  max-height:calc(100vh - 130px);background:var(--navy-900);border:1px solid rgba(124,77,255,.35);border-radius:20px;
  box-shadow:0 26px 70px rgba(0,0,0,.55);display:flex;flex-direction:column;overflow:hidden;
  opacity:0;pointer-events:none;transform:translateY(14px) scale(.98);transition:all .22s}
.chat-panel.open{opacity:1;pointer-events:auto;transform:none}
.chat-head{display:flex;align-items:center;gap:12px;padding:15px 18px;background:linear-gradient(120deg,#221540,#31184A);border-bottom:1px solid var(--line)}
.chat-avatar{width:38px;height:38px;border-radius:50%;background:linear-gradient(135deg,var(--purple-soft),var(--purple));
  display:grid;place-items:center;font-family:var(--font-d);font-weight:800;font-size:.75rem;flex-shrink:0}
.chat-title{font-weight:600;font-size:.92rem}
.chat-sub{font-size:.72rem;color:var(--purple-soft)}
.chat-close{margin-left:auto;background:none;border:0;color:var(--ink-2);font-size:1.5rem;cursor:pointer;line-height:1}
.chat-close:hover{color:#fff}
.chat-body{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:9px}
.msg{max-width:84%;padding:10px 14px;border-radius:14px;font-size:.88rem;line-height:1.55;white-space:pre-line;animation:pop .16s ease}
@keyframes pop{from{opacity:0;transform:translateY(5px)}to{opacity:1;transform:none}}
.msg.bot{background:var(--navy-800);border:1px solid var(--line);border-bottom-left-radius:4px;align-self:flex-start;color:var(--ink)}
.msg.user{background:var(--purple);color:#fff;border-bottom-right-radius:4px;align-self:flex-end}
.msg a{color:var(--orange-soft);font-weight:600;text-decoration:underline}
.chat-quick{display:flex;gap:7px;padding:0 15px 10px;flex-wrap:wrap}
.chat-quick button{font-size:.76rem;font-weight:600;color:var(--purple-soft);background:rgba(124,77,255,.12);
  border:1px solid rgba(124,77,255,.4);border-radius:999px;padding:6px 12px;cursor:pointer;transition:background .15s;font-family:inherit}
.chat-quick button:hover{background:rgba(124,77,255,.25)}
.chat-foot{display:flex;align-items:center;gap:8px;padding:9px 14px;border-top:1px solid var(--line);background:rgba(124,77,255,.07);flex-wrap:wrap}
.chat-foot .cf-label{font-size:.7rem;color:var(--ink-2);margin-right:auto}
.chat-foot .cf-btn{font-size:.74rem;font-weight:700;color:#fff;background:var(--purple);padding:6px 11px;border-radius:9px;text-decoration:none;transition:all .15s}
.chat-foot .cf-btn:hover{background:var(--purple-soft)}
.chat-foot .cf-btn.wa{background:#1FA855}
.chat-foot .cf-btn.wa:hover{background:#178a45}
.chat-input{display:flex;gap:8px;padding:12px 14px;border-top:1px solid var(--line)}
.chat-input input{flex:1;background:var(--navy-800);border:1px solid var(--line);border-radius:10px;color:var(--ink);
  font-size:.9rem;font-family:inherit;padding:9px 13px;outline:none}
.chat-input input:focus{border-color:var(--purple)}
.chat-input button{border:0;background:var(--orange);color:#fff;width:38px;height:38px;border-radius:10px;cursor:pointer;flex-shrink:0}
.typing{display:inline-flex;gap:4px;padding:13px 16px}
.typing i{width:6px;height:6px;border-radius:50%;background:var(--purple-soft);animation:blink 1.2s infinite}
.typing i:nth-child(2){animation-delay:.2s}.typing i:nth-child(3){animation-delay:.4s}
@keyframes blink{0%,80%,100%{opacity:.25}40%{opacity:1}}

/* ---------- Responsive ---------- */
@media (max-width:1000px){
  .grid-cards{grid-template-columns:repeat(2,1fr)}
  .benefits{grid-template-columns:repeat(2,1fr)}
  .values{grid-template-columns:repeat(2,1fr)}
  .p-hero{grid-template-columns:1fr;gap:30px}
  .duo{grid-template-columns:1fr}
  .vm-grid{grid-template-columns:1fr}
  .f-grid{grid-template-columns:1fr 1fr}
  .stats{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:640px){
  .grid-cards,.benefits,.values,.contact-grid,.scenes,.pack{grid-template-columns:1fr}
  .nav-links{position:fixed;inset:66px 0 auto 0;background:#5A2A87;flex-direction:column;
    padding:18px;gap:6px;display:none;border-bottom:1px solid var(--line)}
  body.nav-open .nav-links{display:flex}
  .nav-burger{display:block}
  .nav-inner{gap:12px}
  section{padding:56px 0}
}

/* ---------- 顶部图片带（全幅大图 + 图上文字） ---------- */
.img-band{position:relative;margin-top:68px;background:#0A1220}
.img-band img{display:block;width:100%;height:clamp(300px,52vh,560px);object-fit:cover}
.img-band .band-cap{position:absolute;inset:auto 0 0 0;padding:90px 0 32px;
  background:linear-gradient(to top,rgba(6,10,20,.88) 0%,rgba(6,10,20,.45) 55%,transparent 100%)}
.img-band .band-cap .wrap{padding:0 26px}
.img-band .band-kicker{font-size:.72rem;letter-spacing:.3em;text-transform:uppercase;color:var(--orange-soft);font-weight:700;margin-bottom:8px}
.img-band .band-title{font-family:var(--font-d);font-weight:800;color:#fff;font-size:clamp(1.5rem,2.8vw,2.3rem);line-height:1.15;text-shadow:0 2px 20px rgba(0,0,0,.5)}
.img-band.two{display:grid;grid-template-columns:1fr 1fr;gap:2px}
.img-band.two figure{position:relative;margin:0}
.img-band.two figure img{height:clamp(240px,40vh,440px)}
.img-band.two .band-cap{padding:70px 0 26px}
@media(max-width:820px){
  .img-band img{height:clamp(220px,36vh,380px)}
  .img-band.two{grid-template-columns:1fr}
  .img-band.two figure img{height:clamp(220px,36vh,380px)}
}

/* ---------- BAR 系列：图左文右 + 整行 benefit 卡 ---------- */
.bar-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:50px;align-items:center}
.bar-grid .shot{background:#fff;border-radius:20px;padding:34px;box-shadow:0 20px 60px rgba(0,0,0,.45)}
.bar-grid .shot img{width:100%;object-fit:contain}
.bar-grid.flip .shot{order:2}
.bar-copy .lede{color:var(--ink-2);margin:14px 0 0;max-width:460px;font-size:.95rem}
.bar-benefits{display:grid;grid-template-columns:repeat(4,1fr);grid-auto-rows:1fr;gap:14px;margin-top:38px}
.bar-benefits .bcard{padding:22px 18px}
.bar-benefits .bcard .ic{width:42px;height:42px;font-size:1.1rem;margin-bottom:12px;border-radius:11px}
.bar-benefits .bcard h3{font-size:.9rem;line-height:1.3;margin-bottom:6px}
.bar-benefits .bcard p{font-size:.8rem;line-height:1.45}
@media(max-width:960px){
  .bar-grid{grid-template-columns:1fr;gap:26px}
  .bar-grid.flip .shot{order:-1}
  .bar-benefits{grid-template-columns:1fr 1fr;margin-top:28px}
}
@media(max-width:600px){
  .bar-benefits{grid-template-columns:1fr}
}