/* ============================================================
   广州天诚伟业通信科技有限公司 · 官网共享样式
   基调延用初稿（橙金渐变 / PingFang·雅黑 / 卡片式分区）
   扩展：多页顶部下拉导航、首页门户模块、案例详情、内页 banner
   ============================================================ */
:root{
  --orange:#E85D1F;
  --orange-deep:#D14A12;
  --gold:#F9A825;
  --gold-light:#FFC94D;
  --grad:linear-gradient(96deg,#E8501A 0%,#F07E22 55%,#F9B234 100%);
  --ink:#1B2430;
  --ink-soft:#5A6675;
  --line:#EBEEF3;
  --bg:#FFFFFF;
  --bg-soft:#F7F8FB;
  --dark:#0D1420;
  --radius:16px;
  --nav-h:72px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",sans-serif;color:var(--ink);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
ul{list-style:none}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}
section{padding:88px 0}
.bg-soft{background:var(--bg-soft)}
.sec-tag{display:inline-flex;align-items:center;gap:10px;font-size:13px;letter-spacing:.35em;color:var(--orange);font-weight:600;margin-bottom:14px}
.sec-tag::before{content:"";width:28px;height:2px;background:var(--grad);border-radius:2px}
.sec-title{font-size:clamp(26px,3.4vw,38px);font-weight:700;letter-spacing:.04em;margin-bottom:14px}
.sec-sub{color:var(--ink-soft);font-size:16px;max-width:780px}
.center{text-align:center}
.center .sec-sub{margin:0 auto}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ===== Header / Nav ===== */
header#hdr{--nav-text:#F8FAFC;--nav-accent:#FFC94D;position:fixed;top:0;left:0;right:0;z-index:200;transition:.3s;background:rgba(13,20,32,.82)}
header#hdr.solid{--nav-text:var(--ink);--nav-accent:#B64112;background:rgba(255,255,255,.95);backdrop-filter:blur(14px);box-shadow:0 1px 0 var(--line)}
.nav{max-width:1240px;margin:0 auto;padding:14px 28px;display:flex;align-items:center;justify-content:space-between;min-height:var(--nav-h)}
.brand{display:flex;align-items:center;gap:12px}
.brand img.mark{height:44px;width:auto}
.brand img.word{height:32px;width:auto}
nav.links{display:flex;gap:6px;font-size:15px;font-weight:500;align-items:center}
nav.links>a,nav.links .has-drop>a{color:var(--nav-text);position:relative;padding:8px 15px;border-radius:8px;transition:.2s;white-space:nowrap;display:inline-block}
nav.links>a:hover,nav.links .has-drop>a:hover{color:var(--nav-accent)}
nav.links a.active{color:var(--nav-accent)}
nav.links a:focus-visible,.menu-btn:focus-visible{outline:2px solid var(--nav-accent);outline-offset:3px}
nav.links>a.active::after,nav.links .has-drop>a.active::after{content:"";position:absolute;left:15px;right:15px;bottom:2px;height:2px;background:var(--grad);border-radius:2px}
/* dropdown */
.has-drop{position:relative}
.has-drop>a::before{content:"▾";font-size:10px;margin-left:5px;color:currentColor;vertical-align:middle}
.has-drop>a .caret{display:none}
.drop{--nav-accent:#B64112;position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(10px);min-width:190px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 18px 40px rgba(27,36,48,.14);padding:8px;opacity:0;visibility:hidden;transition:.22s;z-index:210}
.has-drop:hover .drop{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.drop a{display:block;padding:10px 14px;font-size:14px;color:var(--ink);border-radius:8px;transition:.16s;white-space:nowrap}
.drop a:hover{background:var(--bg-soft);color:var(--nav-accent)}
.nav-cta{font-size:14px;font-weight:600;color:#fff;background:var(--grad);padding:10px 22px;border-radius:999px;box-shadow:0 6px 18px rgba(232,93,31,.32);transition:.2s;margin-left:8px}
.nav-cta:hover{transform:translateY(-1px);box-shadow:0 9px 24px rgba(232,93,31,.42)}
.menu-btn{display:none;background:none;border:none;font-size:26px;color:var(--nav-accent);cursor:pointer}

/* ===== Inner page banner ===== */
.page-hero{position:relative;padding:calc(var(--nav-h) + 76px) 0 76px;overflow:hidden;color:#fff;background:
  radial-gradient(760px 380px at 88% -20%,rgba(249,178,52,.30),transparent 60%),
  radial-gradient(680px 400px at 0% 120%,rgba(232,93,31,.28),transparent 60%),
  linear-gradient(120deg,#0F1A2B 0%,#182741 55%,#3A2A18 130%)}
.page-hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:52px 52px;mask-image:radial-gradient(ellipse 70% 80% at 50% 40%,#000 20%,transparent 78%);-webkit-mask-image:radial-gradient(ellipse 70% 80% at 50% 40%,#000 20%,transparent 78%)}
.page-hero .wrap{position:relative}
.crumb{font-size:13.5px;color:rgba(255,255,255,.6);margin-bottom:16px;letter-spacing:.04em}
.crumb a:hover{color:#fff}
.crumb span{margin:0 8px;opacity:.6}
.page-hero h1{font-size:clamp(28px,4vw,44px);font-weight:700;letter-spacing:.02em;margin-bottom:14px}
.page-hero p{color:rgba(255,255,255,.74);max-width:720px;font-size:16px}
.page-hero .en{font-size:13px;letter-spacing:.3em;color:var(--gold-light);font-weight:600;margin-bottom:12px;text-transform:uppercase}

/* ===== HERO (home) ===== */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;overflow:hidden;background:
  radial-gradient(900px 500px at 85% -10%,rgba(249,178,52,.16),transparent 60%),
  radial-gradient(800px 520px at -5% 30%,rgba(232,93,31,.10),transparent 60%),
  linear-gradient(180deg,#FFF9F2 0%,#FFFFFF 70%)}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(232,93,31,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(232,93,31,.05) 1px,transparent 1px);background-size:56px 56px;mask-image:radial-gradient(ellipse 70% 60% at 50% 40%,#000 30%,transparent 75%);-webkit-mask-image:radial-gradient(ellipse 70% 60% at 50% 40%,#000 30%,transparent 75%)}
.hero-inner{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;padding:calc(var(--nav-h) + 40px) 0 90px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--orange-deep);background:rgba(232,93,31,.08);border:1px solid rgba(232,93,31,.22);padding:7px 16px;border-radius:999px;margin-bottom:26px}
.hero-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--grad)}
.hero h1{font-size:clamp(34px,4.6vw,54px);line-height:1.25;font-weight:700;letter-spacing:.02em;margin-bottom:20px}
.hero p.lead{font-size:clamp(16px,1.6vw,19px);color:var(--ink-soft);margin-bottom:40px;max-width:560px}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;padding:14px 32px;border-radius:999px;transition:.22s}
.btn-primary{color:#fff;background:var(--grad);box-shadow:0 10px 26px rgba(232,93,31,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 32px rgba(232,93,31,.45)}
.btn-ghost{color:var(--orange-deep);border:1.5px solid rgba(232,93,31,.45);background:rgba(255,255,255,.6)}
.btn-ghost:hover{background:rgba(232,93,31,.06)}
.hero-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.hero-company{grid-column:2;margin-top:30px;display:flex;align-items:center;gap:16px}
.hero-company .rule{flex:none;width:36px;height:2px;border-radius:2px;background:var(--grad)}
.hero-company .cn{font-size:15.5px;font-weight:700;letter-spacing:.08em;color:var(--ink)}
.hero-company .en{font-size:12px;letter-spacing:.16em;color:var(--ink-soft);margin-top:2px}
.stat-card{background:rgba(255,255,255,.85);backdrop-filter:blur(8px);border:1px solid var(--line);border-radius:var(--radius);padding:28px 26px;box-shadow:0 14px 34px rgba(27,36,48,.06);position:relative;overflow:hidden}
.stat-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--grad)}
.stat-num{font-size:clamp(30px,3vw,40px);font-weight:800;letter-spacing:.01em;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;font-family:"DIN Alternate","Bahnschrift",Arial,sans-serif}
.stat-label{font-size:14px;color:var(--ink-soft);margin-top:6px}
.scroll-hint{position:absolute;left:50%;bottom:26px;transform:translateX(-50%);color:var(--orange);font-size:12px;letter-spacing:.3em;opacity:.75;animation:bob 1.8s ease-in-out infinite}
@keyframes bob{0%,100%{transform:translate(-50%,0)}50%{transform:translate(-50%,8px)}}

/* ===== Advantage strip (home) ===== */
.adv-band{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:-56px;position:relative;z-index:5}
.adv-cell{background:#fff;border:1px solid var(--line);padding:30px 26px;display:flex;gap:16px;align-items:flex-start;transition:.25s}
.adv-cell:hover{box-shadow:0 20px 44px rgba(232,93,31,.12);transform:translateY(-4px);z-index:6;border-color:rgba(232,93,31,.3)}
.adv-cell .ic{flex:none;width:48px;height:48px;border-radius:12px;background:linear-gradient(140deg,rgba(232,93,31,.12),rgba(249,178,52,.2));display:grid;place-items:center;font-size:24px}
.adv-cell h4{font-size:16.5px;margin-bottom:4px}
.adv-cell p{font-size:13px;color:var(--ink-soft)}
.adv-cell:not(:last-child){border-right:none}

/* ===== About ===== */
.about-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
.about-copy p{color:var(--ink-soft);margin-bottom:18px;font-size:16px}
.about-copy strong{color:var(--ink)}
.about-points{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:30px}
.about-point{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;font-weight:600}
.about-point .ic{flex:none;width:22px;height:22px;border-radius:6px;background:var(--grad);color:#fff;display:grid;place-items:center;font-size:12px;margin-top:3px}
.spirit-card{background:linear-gradient(160deg,#FFF6EC,#FFFBF4);border:1px solid rgba(232,93,31,.18);border-radius:24px;padding:44px 40px;text-align:center;position:relative;overflow:hidden}
.spirit-card::after{content:"";position:absolute;right:-60px;top:-60px;width:200px;height:200px;border-radius:50%;background:radial-gradient(circle,rgba(249,178,52,.28),transparent 70%)}
.spirit-card .cap{font-size:13px;letter-spacing:.4em;color:var(--orange);font-weight:700;margin-bottom:22px}
.spirit-card img{margin:0 auto 26px;max-width:340px}
.spirit-card .addr{font-size:14px;color:var(--ink-soft)}
.spirit-card .addr b{color:var(--ink);display:block;font-size:15.5px;margin-bottom:4px}

/* ===== Capability ===== */
.cap-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:52px}
.cap-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px 26px;transition:.28s;position:relative}
.cap-card:hover{transform:translateY(-6px);box-shadow:0 22px 44px rgba(232,93,31,.12);border-color:rgba(232,93,31,.35)}
.cap-num{font-size:13px;font-weight:800;letter-spacing:.15em;color:var(--gold);font-family:Arial,sans-serif}
.cap-card h3{font-size:19px;margin:12px 0 4px}
.cap-card .en{font-size:12px;color:var(--orange);letter-spacing:.06em;margin-bottom:14px}
.cap-card p{font-size:14px;color:var(--ink-soft)}
.cap-card::after{content:"";position:absolute;left:26px;bottom:22px;width:34px;height:3px;border-radius:3px;background:var(--grad);opacity:.85}

/* ===== Timeline ===== */
.tl{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;margin-top:64px;position:relative}
.tl::before{content:"";position:absolute;top:27px;left:6%;right:6%;height:2px;background:linear-gradient(90deg,rgba(232,93,31,.15),rgba(232,93,31,.55),rgba(249,178,52,.8))}
.tl-item{text-align:center;position:relative}
.tl-dot{width:56px;height:56px;margin:0 auto 20px;border-radius:50%;background:#fff;border:2px solid rgba(232,93,31,.5);display:grid;place-items:center;font-weight:800;font-size:14px;color:var(--orange-deep);position:relative;z-index:1;box-shadow:0 8px 22px rgba(232,93,31,.15);font-family:Arial,sans-serif}
.tl-item:last-child .tl-dot{background:var(--grad);color:#fff;border-color:transparent}
.tl-item h4{font-size:17px;margin-bottom:8px}
.tl-item p{font-size:13.5px;color:var(--ink-soft);padding:0 8px}

/* ===== Business ===== */
.biz-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:52px}
.biz-card{border-radius:20px;padding:38px 32px;color:#fff;position:relative;overflow:hidden;min-height:270px;display:flex;flex-direction:column;transition:.28s}
.biz-card:hover{transform:translateY(-6px);box-shadow:0 24px 48px rgba(27,36,48,.18)}
.biz-card .role{font-size:12.5px;font-weight:700;letter-spacing:.22em;opacity:.9;background:rgba(255,255,255,.16);display:inline-block;padding:5px 14px;border-radius:999px;margin-bottom:auto}
.biz-card h3{font-size:23px;margin:26px 0 10px}
.biz-card p{font-size:14.5px;opacity:.92;line-height:1.75}
.biz-card .more{margin-top:18px;font-size:13px;font-weight:600;opacity:.9;letter-spacing:.04em}
.biz-ai{background:linear-gradient(150deg,#C93E00 0%,#F07E22 60%,#F9B234 130%)}
.biz-city{background:linear-gradient(150deg,#13203A 0%,#2A3F66 70%,#3E5A8F 100%)}
.biz-tel{background:linear-gradient(150deg,#7A2E0E 0%,#B4551D 65%,#DE8A33 120%)}
.biz-card::before{content:"";position:absolute;right:-40px;bottom:-40px;width:170px;height:170px;border-radius:50%;border:26px solid rgba(255,255,255,.09)}

/* ===== Scenes ===== */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:52px}
.scene{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;transition:.26s}
.scene:hover{transform:translateY(-5px);box-shadow:0 20px 40px rgba(27,36,48,.09)}
.scene .ic{width:52px;height:52px;border-radius:14px;background:linear-gradient(140deg,rgba(232,93,31,.12),rgba(249,178,52,.18));display:grid;place-items:center;font-size:24px;margin-bottom:18px}
.scene h4{font-size:17.5px;margin-bottom:4px}
.scene .tagline{font-size:12.5px;color:var(--orange);font-weight:600;letter-spacing:.08em;margin-bottom:10px}
.scene p{font-size:14px;color:var(--ink-soft)}

/* ===== AI stack ===== */
.stack{margin-top:56px;display:flex;flex-direction:column;gap:14px;max-width:900px;margin-left:auto;margin-right:auto}
.layer{display:grid;grid-template-columns:120px 1fr;align-items:center;gap:24px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px 26px;transition:.25s;margin-left:auto;margin-right:auto}
.layer:hover{border-color:rgba(232,93,31,.4);box-shadow:0 12px 30px rgba(232,93,31,.1);transform:translateX(6px)}
.layer .lv{font-weight:800;font-size:15px;color:#fff;background:var(--grad);border-radius:10px;text-align:center;padding:10px 0;font-family:Arial,sans-serif}
.layer h4{font-size:17px;margin-bottom:2px}
.layer p{font-size:13.5px;color:var(--ink-soft)}
.stack .layer:nth-child(1){width:80%}
.stack .layer:nth-child(2){width:85%}
.stack .layer:nth-child(3){width:90%}
.stack .layer:nth-child(4){width:95%}
.stack .layer:nth-child(5){width:100%}

/* ===== TokenFlow band ===== */
.tf-band{background:linear-gradient(135deg,#101B2E 0%,#1B2A45 55%,#3A2A18 100%);border-radius:28px;padding:64px 52px;color:#fff;position:relative;overflow:hidden;margin-top:56px}
.tf-band::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);background-size:44px 44px}
.tf-band::after{content:"";position:absolute;right:-120px;top:-120px;width:380px;height:380px;border-radius:50%;background:radial-gradient(circle,rgba(249,178,52,.35),transparent 65%)}
.tf-head{position:relative;margin-bottom:40px}
.tf-head .kicker{font-size:13px;letter-spacing:.3em;color:var(--gold-light);font-weight:700;margin-bottom:10px}
.tf-head h3{font-size:clamp(24px,2.8vw,32px);font-weight:700}
.tf-head p{color:rgba(255,255,255,.72);max-width:720px;margin-top:12px;font-size:15px}
.tf-grid{position:relative;display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.tf-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);backdrop-filter:blur(6px);border-radius:16px;padding:28px 24px;transition:.25s}
.tf-card:hover{background:rgba(255,255,255,.1);border-color:rgba(249,178,52,.5);transform:translateY(-4px)}
.tf-card .no{font-size:13px;font-weight:800;color:var(--gold-light);letter-spacing:.12em;font-family:Arial,sans-serif}
.tf-card h4{font-size:18px;margin:10px 0 10px}
.tf-card p{font-size:13.5px;color:rgba(255,255,255,.72)}
.tf-note{position:relative;margin-top:34px;display:flex;gap:36px;flex-wrap:wrap;font-size:14px;color:rgba(255,255,255,.85)}
.tf-note b{color:var(--gold-light)}

/* ===== Honors ===== */
.honor-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px 34px;margin-top:48px}
.honor{display:flex;gap:14px;align-items:flex-start;padding:16px 18px;border:1px solid var(--line);border-radius:12px;background:#fff;transition:.22s;font-size:15px;font-weight:500}
.honor:hover{border-color:rgba(232,93,31,.4);box-shadow:0 10px 24px rgba(232,93,31,.08)}
.honor .medal{flex:none;width:30px;height:30px;border-radius:50%;background:var(--grad);color:#fff;display:grid;place-items:center;font-size:14px;font-weight:700}
.iso-band{margin-top:26px;background:linear-gradient(90deg,rgba(232,93,31,.07),rgba(249,178,52,.1));border:1px dashed rgba(232,93,31,.4);border-radius:14px;padding:20px 26px;text-align:center;font-size:15px;color:var(--orange-deep);font-weight:600}

/* ===== Future ===== */
.future{background:radial-gradient(700px 400px at 90% 10%,rgba(249,178,52,.14),transparent 60%),radial-gradient(600px 400px at 5% 90%,rgba(232,93,31,.1),transparent 60%),#0D1420;color:#fff}
.future .sec-title{color:#fff}
.future .sec-sub{color:rgba(255,255,255,.65)}
.fu-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:56px}
.fu-card{border:1px solid rgba(255,255,255,.14);border-radius:18px;padding:34px 28px;background:rgba(255,255,255,.04);transition:.26s}
.fu-card:hover{border-color:rgba(249,178,52,.55);background:rgba(249,178,52,.06);transform:translateY(-5px)}
.fu-card .no{font-size:34px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;font-family:Arial,sans-serif}
.fu-card h4{font-size:19px;margin:14px 0 10px}
.fu-card p{font-size:14px;color:rgba(255,255,255,.68)}

/* ===== Contact ===== */
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:52px}
.contact-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:36px 30px;text-align:center;transition:.25s}
.contact-card:hover{transform:translateY(-5px);box-shadow:0 20px 42px rgba(232,93,31,.12);border-color:rgba(232,93,31,.35)}
.contact-card .ic{width:60px;height:60px;margin:0 auto 18px;border-radius:18px;background:var(--grad);color:#fff;display:grid;place-items:center;font-size:26px;box-shadow:0 10px 24px rgba(232,93,31,.3)}
.contact-card .cap{font-size:12.5px;letter-spacing:.25em;color:var(--ink-soft);margin-bottom:8px}
.contact-card .val{font-size:16.5px;font-weight:700}
.contact-card .val a{color:var(--orange-deep)}
.contact-card .val a:hover{text-decoration:underline}

/* ===== Contact layout ===== */
.contact-layout{display:grid;grid-template-columns:1fr 1.1fr;gap:44px;margin-top:52px;align-items:start}
.info-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:34px 32px;box-shadow:0 16px 40px rgba(27,36,48,.06)}
.info-row{display:flex;gap:16px;align-items:flex-start;padding:18px 0;border-bottom:1px solid var(--line)}
.info-row:last-child{border-bottom:none}
.info-row .ic{flex:none;width:46px;height:46px;border-radius:12px;background:var(--grad);color:#fff;display:grid;place-items:center;font-size:20px;box-shadow:0 8px 20px rgba(232,93,31,.28)}
.info-row .k{font-size:12.5px;letter-spacing:.14em;color:var(--ink-soft);margin-bottom:3px}
.info-row .v{font-size:16px;font-weight:700}
.info-row .v a{color:var(--orange-deep)}
.info-row .v a:hover{text-decoration:underline}
.form-card{background:var(--bg-soft);border:1px solid var(--line);border-radius:18px;padding:34px 32px}
.form-card h3{font-size:20px;margin-bottom:6px}
.form-card .fh-sub{font-size:14px;color:var(--ink-soft);margin-bottom:22px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13.5px;font-weight:600;margin-bottom:7px}
.field input,.field textarea{width:100%;font-family:inherit;font-size:15px;color:var(--ink);background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px 14px;transition:.2s}
.field input:focus,.field textarea:focus{outline:none;border-color:rgba(232,93,31,.5);box-shadow:0 0 0 3px rgba(232,93,31,.12)}
.field textarea{min-height:110px;resize:vertical}
.form-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-submit{width:100%;border:none;cursor:pointer;justify-content:center}
.form-tip{font-size:12.5px;color:var(--ink-soft);margin-top:12px;text-align:center}
.map-frame{margin-top:40px;border-radius:18px;overflow:hidden;border:1px solid var(--line);height:320px}
.map-frame iframe{width:100%;height:100%;border:0}

/* ===== Footer ===== */
footer{background:#0A101B;color:rgba(255,255,255,.55);padding:54px 0 34px;font-size:13.5px}
.foot-cols{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.08)}
.foot-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.foot-brand img.mark{height:44px}
.foot-brand img.word{height:30px;filter:brightness(0) invert(1);opacity:.92}
.foot-desc{max-width:320px;line-height:1.8;color:rgba(255,255,255,.5)}
.foot-col h5{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.05em}
.foot-col a{display:block;padding:5px 0;color:rgba(255,255,255,.55);transition:.18s}
.foot-col a:hover{color:var(--gold-light)}
.foot-col .line{display:flex;gap:8px;padding:5px 0;color:rgba(255,255,255,.55)}
.foot-bottom{padding-top:24px;display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;letter-spacing:.04em}
.foot-slogan{font-size:13.5px;letter-spacing:.16em;color:rgba(255,255,255,.7)}
.foot-license{padding-top:22px;text-align:center;font-size:13px;color:rgba(255,255,255,.55);letter-spacing:.03em}
.foot-license a{color:var(--gold-light);border-bottom:1px dashed rgba(249,178,52,.5);padding-bottom:1px;transition:.18s;font-weight:600}
.foot-license a:hover{color:#fff;border-bottom-color:#fff}

/* ===== Cases ===== */
.case-feature{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:24px;overflow:hidden;margin-top:14px;box-shadow:0 20px 50px rgba(27,36,48,.07)}
.case-feature .cf-visual{position:relative;min-height:340px;background:linear-gradient(150deg,#13203A 0%,#2A3F66 60%,#3E5A8F 100%);display:flex;align-items:center;justify-content:center;color:#fff;padding:40px;overflow:hidden}
.case-feature .cf-visual::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);background-size:40px 40px}
.case-feature .cf-visual .big{position:relative;text-align:center}
.case-feature .cf-visual .big .num{font-size:64px;font-weight:800;line-height:1;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;font-family:"DIN Alternate","Bahnschrift",Arial,sans-serif}
.case-feature .cf-visual .big .lab{font-size:14px;letter-spacing:.24em;color:rgba(255,255,255,.8);margin-top:12px}
.case-feature .cf-body{padding:44px 44px 44px 0}
.case-badge{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.1em;color:#fff;background:var(--grad);padding:6px 14px;border-radius:999px;margin-bottom:16px}
.case-feature h3{font-size:24px;margin-bottom:6px;line-height:1.4}
.case-feature .cf-meta{font-size:13.5px;color:var(--orange);font-weight:600;margin-bottom:18px;letter-spacing:.04em}
.case-block{margin-bottom:16px}
.case-block .h{font-size:13.5px;font-weight:700;color:var(--ink);margin-bottom:5px;display:flex;align-items:center;gap:8px}
.case-block .h::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--grad)}
.case-block p{font-size:14.5px;color:var(--ink-soft)}

.case-cats{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:40px}
.case-cat{font-size:14px;font-weight:600;padding:9px 20px;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--ink-soft);cursor:pointer;transition:.2s}
.case-cat.active,.case-cat:hover{background:var(--grad);color:#fff;border-color:transparent;box-shadow:0 8px 20px rgba(232,93,31,.28)}
.case-list{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:44px}
.case-card{background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;transition:.26s;display:flex;flex-direction:column}
.case-card:hover{transform:translateY(-6px);box-shadow:0 24px 48px rgba(27,36,48,.12);border-color:rgba(232,93,31,.3)}
.case-card .cc-top{position:relative;height:150px;display:flex;align-items:flex-end;padding:20px;color:#fff;overflow:hidden}
.case-card .cc-top::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 30%,rgba(13,20,32,.55))}
.case-card .cc-top .yr{position:relative;z-index:1;font-size:13px;font-weight:700;letter-spacing:.08em;background:rgba(255,255,255,.18);padding:4px 12px;border-radius:999px;backdrop-filter:blur(4px)}
.case-card.tg-a{--c1:#C93E00;--c2:#F07E22}
.case-card.tg-b{--c1:#13203A;--c2:#3E5A8F}
.case-card.tg-c{--c1:#7A2E0E;--c2:#DE8A33}
.case-card .cc-top{background:linear-gradient(140deg,var(--c1),var(--c2))}
.case-card .cc-body{padding:24px 24px 26px;display:flex;flex-direction:column;flex:1}
.case-card h4{font-size:17px;line-height:1.45;margin-bottom:10px;min-height:48px}
.case-card .cc-area{font-size:12.5px;color:var(--orange);font-weight:600;margin-bottom:12px}
.case-card p{font-size:13.5px;color:var(--ink-soft);line-height:1.75;flex:1}
.case-card .cc-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:16px}
.case-card .cc-tags span{font-size:11.5px;color:var(--ink-soft);background:var(--bg-soft);border:1px solid var(--line);border-radius:6px;padding:3px 9px}
.case-list.dense{grid-template-columns:repeat(2,1fr);gap:28px}
.case-list.dense .case-card h4{min-height:auto}
.case-list.dense .cc-top{height:130px}
.case-list.dense .cc-body .case-block p{font-size:14px}
.case-sub{font-size:clamp(19px,2.2vw,24px);font-weight:700;margin-top:78px;margin-bottom:6px;display:flex;align-items:center;gap:12px}
.case-sub::before{content:"";width:6px;height:22px;border-radius:3px;background:var(--grad)}
.case-sub-en{font-size:13px;color:var(--ink-soft);letter-spacing:.1em;margin-bottom:6px}

/* ===== News (home) ===== */
.news-wrap{display:grid;grid-template-columns:1.4fr 1fr;gap:44px;margin-top:52px;align-items:start}
.news-list{display:flex;flex-direction:column}
.news-item{display:grid;grid-template-columns:88px 1fr;gap:20px;padding:22px 0;border-bottom:1px solid var(--line);transition:.2s}
.news-item:hover{padding-left:8px}
.news-item .date{border:1px solid var(--line);border-radius:12px;text-align:center;padding:10px 0;background:var(--bg-soft)}
.news-item .date .d{font-size:24px;font-weight:800;color:var(--orange);font-family:"DIN Alternate",Arial,sans-serif;line-height:1}
.news-item .date .m{font-size:12px;color:var(--ink-soft);margin-top:3px}
.news-item h4{font-size:16.5px;margin-bottom:6px;transition:.2s}
.news-item:hover h4{color:var(--orange)}
.news-item p{font-size:13.5px;color:var(--ink-soft);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-side{background:var(--bg-soft);border:1px solid var(--line);border-radius:18px;padding:30px 26px}
.news-side h4{font-size:16px;margin-bottom:18px}
.mini-stat{display:flex;justify-content:space-between;align-items:baseline;padding:12px 0;border-bottom:1px dashed var(--line)}
.mini-stat:last-child{border-bottom:none}
.mini-stat b{font-size:26px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;font-family:"DIN Alternate",Arial,sans-serif}
.mini-stat span{font-size:14px;color:var(--ink-soft)}

/* ===== CTA band ===== */
.cta-band{position:relative;overflow:hidden;border-radius:28px;padding:66px 52px;color:#fff;text-align:center;background:linear-gradient(120deg,#C93E00 0%,#F07E22 55%,#F9B234 120%)}
.cta-band::before{content:"";position:absolute;inset:0;background-image:radial-gradient(circle at 15% 20%,rgba(255,255,255,.18),transparent 40%),radial-gradient(circle at 85% 80%,rgba(255,255,255,.14),transparent 40%)}
.cta-band h2{position:relative;font-size:clamp(24px,3vw,34px);font-weight:700;margin-bottom:14px}
.cta-band p{position:relative;color:rgba(255,255,255,.9);max-width:620px;margin:0 auto 30px;font-size:16px}
.cta-band .btn{position:relative;background:#fff;color:var(--orange-deep)}
.cta-band .btn:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(0,0,0,.18)}
.cta-band .btn-2{position:relative;margin-left:14px;background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.7)}

/* ===== Reveal ===== */
.rv{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.rv.on{opacity:1;transform:none}

/* ===== Responsive ===== */
@media (max-width:1080px){
  .foot-cols{grid-template-columns:1fr 1fr}
  .adv-band{grid-template-columns:1fr 1fr}
  .adv-cell:nth-child(2){border-right:none}
  .adv-cell{border-top:none}
}
@media (max-width:960px){
  nav.links{--nav-text:var(--ink);--nav-accent:#B64112;display:none;position:absolute;top:100%;left:0;right:0;background:#fff;flex-direction:column;gap:0;padding:10px 26px 20px;box-shadow:0 16px 30px rgba(0,0,0,.1);align-items:stretch;max-height:calc(100vh - var(--nav-h));overflow:auto}
  nav.links.open{display:flex}
  nav.links>a,nav.links .has-drop>a{padding:14px 0;border-bottom:1px solid var(--line)}
  nav.links>a.active::after,nav.links .has-drop>a.active::after{display:none}
  .has-drop>a::before{display:none}
  .has-drop>a .caret{display:inline-block;margin-left:6px;font-size:11px;transition:.2s}
  .has-drop.open>a .caret{transform:rotate(180deg)}
  .drop{position:static;transform:none;opacity:1;visibility:visible;box-shadow:none;border:none;border-radius:0;padding:0 0 0 16px;min-width:0;display:none}
  .has-drop.open .drop{display:block}
  .has-drop .caret{display:inline-block;margin-left:6px;transition:.2s}
  .has-drop.open .caret{transform:rotate(180deg)}
  .drop a{padding:11px 0;border-bottom:1px dashed var(--line)}
  .menu-btn{display:block}
  .nav-cta{display:none}
  .hero-inner{grid-template-columns:1fr;padding-top:calc(var(--nav-h) + 40px)}
  .hero-stats{margin-top:10px}
  .hero-company{grid-column:auto}
  .about-grid{grid-template-columns:1fr}
  .cap-grid{grid-template-columns:1fr 1fr}
  .tl{grid-template-columns:1fr 1fr;gap:40px 20px}
  .tl::before{display:none}
  .biz-grid,.scene-grid,.tf-grid,.fu-grid,.contact-grid,.case-list,.case-list.dense{grid-template-columns:1fr}
  .honor-grid{grid-template-columns:1fr}
  .layer{grid-template-columns:88px 1fr;gap:16px}
  .layer:nth-child(n){margin:0;width:100%}
  .case-feature{grid-template-columns:1fr}
  .case-feature .cf-body{padding:0 32px 36px}
  .case-feature .cf-visual{min-height:200px}
  .news-wrap{grid-template-columns:1fr}
  .contact-layout{grid-template-columns:1fr}
  section{padding:66px 0}
  .tf-band,.cta-band{padding:44px 26px}
}
@media (max-width:560px){
  .cap-grid,.hero-stats,.tl,.adv-band{grid-template-columns:1fr}
  .about-points{grid-template-columns:1fr}
  .adv-cell{border-right:1px solid var(--line)!important}
  .foot-cols{grid-template-columns:1fr}
}

/* ============================================================
   V2 · 图片型组件（图 Hero / 图文业务卡 / 案例封面 / 内页背景）
   ============================================================ */
/* image hero */
.hero.hero--img{background:#0B1220;color:#fff}
.hero.hero--img::before{display:none}
.hero-media{position:absolute;inset:0;z-index:0}
.hero-media img{width:100%;height:100%;object-fit:cover;object-position:center 32%}
.hero-media::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(9,15,26,.94) 0%,rgba(9,15,26,.80) 40%,rgba(9,15,26,.38) 74%,rgba(9,15,26,.18) 100%)}
.hero--img .hero-inner{position:relative;z-index:2}
.hero--img .hero-badge{color:#FFD9A8;background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.24)}
.hero--img h1{color:#fff}
.hero--img p.lead{color:rgba(255,255,255,.84)}
.hero--img .stat-card{background:rgba(11,18,32,.44);border-color:rgba(255,255,255,.16)}
.hero--img .stat-label{color:rgba(255,255,255,.74)}
.hero--img .hero-company .cn{color:#fff}
.hero--img .hero-company .en{color:rgba(255,255,255,.6)}
.hero--img .btn-ghost{color:#fff;border-color:rgba(255,255,255,.55);background:rgba(255,255,255,.06)}
.hero--img .btn-ghost:hover{background:rgba(255,255,255,.16)}
.hero--img .scroll-hint{color:#FFC94D}

/* image-led business cards */
.biz-media{background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;color:var(--ink);display:flex;flex-direction:column;transition:.28s}
.biz-media:hover{transform:translateY(-6px);box-shadow:0 26px 52px rgba(27,36,48,.15)}
.biz-media .bm-img{position:relative;height:210px;overflow:hidden;background:#0D1420}
.biz-media .bm-img img{width:100%;height:100%;object-fit:cover;transition:.6s}
.biz-media:hover .bm-img img{transform:scale(1.07)}
.biz-media .bm-img::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 45%,rgba(13,20,32,.42))}
.biz-media .bm-img .role{position:absolute;left:16px;top:16px;z-index:2;font-size:12px;font-weight:700;letter-spacing:.14em;color:#fff;background:var(--grad);padding:5px 14px;border-radius:999px}
.biz-media .bm-body{padding:26px 26px 28px;display:flex;flex-direction:column;flex:1}
.biz-media h3{font-size:21px;margin-bottom:10px}
.biz-media p{font-size:14.5px;color:var(--ink-soft);line-height:1.75;flex:1}
.biz-media .more{margin-top:16px;font-size:13px;font-weight:600;color:var(--orange);display:inline-flex;align-items:center;gap:6px}

/* image scene cards (smart city) */
.scene-img{position:relative;height:150px;overflow:hidden;border-radius:14px 14px 0 0}
.scene-img img{width:100%;height:100%;object-fit:cover;transition:.5s}
.scene:hover .scene-img img{transform:scale(1.06)}
.scene.has-img{padding:0;overflow:hidden}
.scene.has-img .sc-body{padding:22px 24px 26px}

/* case card cover image */
.case-card .cc-top{background:#0D1420}
.case-card .cc-top img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.case-card .cc-top .yr{position:relative;z-index:2}

/* featured case visual with image */
.case-feature .cf-visual{background-size:cover;background-position:center}
.case-feature .cf-visual::before{background:rgba(9,15,26,.55);z-index:0}
.case-feature .cf-visual .big{z-index:1}

/* inner-page hero background image (used with inline style on .page-hero) */
.page-hero.img::before{opacity:.5}

/* about image collage */
.about-media{position:relative;border-radius:22px;overflow:hidden;box-shadow:0 24px 54px rgba(27,36,48,.16)}
.about-media img{width:100%;height:100%;object-fit:cover;display:block}
.about-media .am-tag{position:absolute;left:22px;bottom:22px;color:#fff;font-size:14px;font-weight:600;background:rgba(11,18,32,.55);backdrop-filter:blur(6px);padding:8px 16px;border-radius:999px}
.stat-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:44px;border:1px solid var(--line);border-radius:18px;overflow:hidden;background:#fff}
.stat-strip .ss{padding:26px 18px;text-align:center;border-right:1px solid var(--line)}
.stat-strip .ss:last-child{border-right:none}
.stat-strip .ss b{display:block;font-size:clamp(26px,3vw,36px);font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;font-family:"DIN Alternate","Bahnschrift",Arial,sans-serif}
.stat-strip .ss span{font-size:13.5px;color:var(--ink-soft)}

@media (max-width:960px){
  .hero--img p.lead{max-width:none}
  .biz-media .bm-img{height:190px}
  .stat-strip{grid-template-columns:1fr 1fr}
  .stat-strip .ss:nth-child(2){border-right:none}
  .stat-strip .ss{border-top:1px solid var(--line)}
  .stat-strip .ss:nth-child(-n+2){border-top:none}
}
@media (max-width:560px){
  .stat-strip{grid-template-columns:1fr}
  .stat-strip .ss{border-right:none;border-top:1px solid var(--line)}
  .stat-strip .ss:first-child{border-top:none}
}