/* ==========================================================
   广东知愿科技有限公司 · 官网样式
   品牌规范（品牌资产包-知愿科技 · 紫蒲 #A6559D）
     紫蒲主色 #A6559D ｜ 浅紫 #C98FC2 ｜ 深紫 #6A2E66
     深紫墨（文字/单色） #2E1630 ｜ 极淡底 #F7F1F6 ｜ 纯白 #FFFFFF
     辅助文字 #6B5B68 ｜ 分隔线 #ECE3EC
     品牌渐变：linear-gradient(135deg,#C98FC2,#A6559D 50%,#6A2E66)
   ========================================================== */

:root{
  --zipu:        #A6559D;
  --zipu-light:  #C98FC2;
  --zipu-deep:   #6A2E66;
  --ink:         #2E1630;
  --muted:       #6B5B68;
  --dim:         #8E7C8A;
  --bg-soft:     #F7F1F6;
  --paper:       #FFFFFF;
  --line:        #ECE3EC;
  --line-strong: #DDCEDD;

  --text:        var(--ink);
  --text-mid:    var(--muted);
  --text-dim:    var(--dim);

  --grad:        linear-gradient(135deg,#C98FC2 0%,#A6559D 50%,#6A2E66 100%);
  --grad-deep:   linear-gradient(135deg,#A6559D 0%,#6A2E66 100%);

  --dark:        #2E1630;
  --dark-2:      #43204A;

  --shadow:      0 10px 30px rgba(46,22,48,.07);
  --shadow-lg:   0 18px 48px rgba(46,22,48,.12);
  --radius:      18px;
  --radius-sm:   12px;
  --maxw:        1200px;
  --nav-h:       76px;
}

*{ box-sizing:border-box; }

html{ scroll-behavior:smooth; }

body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",
              -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.78;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

h1,h2,h3,h4{ margin:0; line-height:1.34; font-weight:700; letter-spacing:.2px; color:var(--ink); }
p{ margin:0; }
ul,ol{ margin:0; padding:0; list-style:none; }
a{ color:inherit; text-decoration:none; }
img,svg{ display:block; max-width:100%; }

.container{ width:100%; max-width:var(--maxw); margin:0 auto; padding:0 24px; }

/* ---------------- 导航 ---------------- */
.nav{
  position:fixed; top:0; left:0; right:0; z-index:100;
  height:var(--nav-h);
  background:rgba(255,255,255,.72);
  backdrop-filter:blur(12px); -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:border-color .3s ease, box-shadow .3s ease, background .3s ease;
}
.nav.is-stuck{ border-bottom-color:var(--line); box-shadow:0 4px 20px rgba(46,22,48,.05); }
.nav-inner{ height:100%; display:flex; align-items:center; gap:28px; }

.brand{ display:flex; align-items:center; gap:12px; flex-shrink:0; }
.brand-logo{ height:40px; width:auto; }
.brand-sub{
  font-size:11px; letter-spacing:1.4px; color:var(--muted);
  padding-left:12px; margin-left:2px; border-left:1px solid var(--line-strong);
  line-height:1.4;
}

.nav-links{ display:flex; align-items:center; gap:4px; margin-left:auto; }
.nav-links a{
  position:relative; padding:8px 13px; font-size:14.5px; color:var(--muted);
  border-radius:8px; transition:color .2s ease, background .2s ease;
  white-space:nowrap;
}
.nav-links a:hover{ color:var(--zipu); background:var(--bg-soft); }
.nav-links a.is-active{ color:var(--zipu); font-weight:600; }
.nav-links a.is-active::after{
  content:""; position:absolute; left:13px; right:13px; bottom:1px; height:2px;
  border-radius:2px; background:var(--grad);
}

.nav-toggle{
  display:none; width:42px; height:42px; margin-left:auto;
  background:var(--paper); border:1px solid var(--line-strong); border-radius:10px;
  cursor:pointer; position:relative; padding:0;
}
.nav-toggle span{
  position:absolute; left:11px; width:20px; height:2px; border-radius:2px;
  background:var(--ink); transition:transform .28s ease, opacity .2s ease;
}
.nav-toggle span:nth-child(1){ top:14px; }
.nav-toggle span:nth-child(2){ top:20px; }
.nav-toggle span:nth-child(3){ top:26px; }
.nav-toggle.is-open span:nth-child(1){ transform:translateY(6px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2){ opacity:0; }
.nav-toggle.is-open span:nth-child(3){ transform:translateY(-6px) rotate(-45deg); }

/* ---------------- 按钮 ---------------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:12px 28px; border-radius:999px; border:1px solid transparent;
  font-size:15px; font-weight:600; cursor:pointer; white-space:nowrap;
  transition:transform .2s ease, box-shadow .25s ease, background .25s ease, border-color .25s ease;
}
.btn-sm{ padding:9px 20px; font-size:14px; }
.btn-block{ width:100%; }
.btn-primary{
  background:var(--grad); color:#fff;
  box-shadow:0 8px 22px rgba(166,85,157,.28);
}
.btn-primary:hover{ transform:translateY(-2px); box-shadow:0 14px 32px rgba(166,85,157,.36); }
.btn-ghost{
  background:transparent; color:var(--zipu); border-color:rgba(166,85,157,.45);
}
.btn-ghost:hover{ background:var(--bg-soft); border-color:var(--zipu); transform:translateY(-2px); }
.btn-outline-light{
  background:transparent; color:#fff; border-color:rgba(255,255,255,.45);
}
.btn-outline-light:hover{ background:rgba(255,255,255,.12); border-color:#fff; transform:translateY(-2px); }

/* ---------------- Hero（封面大色块：深紫墨 + 紫蒲光晕） ---------------- */
.hero{
  position:relative; min-height:100vh; display:flex; align-items:center;
  padding:calc(var(--nav-h) + 76px) 0 96px;
  background:linear-gradient(155deg, var(--dark) 0%, var(--dark-2) 55%, #35182F 100%);
  color:#fff; overflow:hidden;
}
.hero h1,.hero h2,.hero h3{ color:#fff; }
.hero-bg{ position:absolute; inset:0; z-index:0; }
.grid-lines{
  position:absolute; inset:0; opacity:.5;
  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:64px 64px;
  mask-image:radial-gradient(ellipse 80% 60% at 50% 40%, #000 30%, transparent 78%);
  -webkit-mask-image:radial-gradient(ellipse 80% 60% at 50% 40%, #000 30%, transparent 78%);
}
.glow{ position:absolute; border-radius:50%; filter:blur(120px); }
.glow-a{ width:560px; height:560px; top:-180px; left:-120px; background:#A6559D; opacity:.45; animation:float1 16s ease-in-out infinite; }
.glow-b{ width:480px; height:480px; bottom:-180px; right:-100px; background:#6A2E66; opacity:.6; animation:float2 20s ease-in-out infinite; }
.glow-c{ width:380px; height:380px; top:34%; left:50%; background:#C98FC2; opacity:.22; animation:float1 24s ease-in-out infinite reverse; }
@keyframes float1{ 0%,100%{ transform:translate(0,0);} 50%{ transform:translate(40px,36px);} }
@keyframes float2{ 0%,100%{ transform:translate(0,0);} 50%{ transform:translate(-50px,-30px);} }

.hero-inner{ position:relative; z-index:1; display:grid; grid-template-columns:1.12fr .88fr; gap:56px; align-items:center; }

.eyebrow{
  display:inline-flex; align-items:center; gap:9px;
  padding:7px 16px; border-radius:999px;
  background:rgba(255,255,255,.09); border:1px solid rgba(255,255,255,.2);
  font-size:12.5px; letter-spacing:1.2px; color:rgba(255,255,255,.85);
  margin-bottom:26px;
}
.eyebrow .dot{
  width:7px; height:7px; border-radius:50%; background:var(--zipu-light);
  box-shadow:0 0 0 4px rgba(201,143,194,.25); animation:pulse 2.4s ease-in-out infinite;
}
@keyframes pulse{ 0%,100%{ opacity:1;} 50%{ opacity:.35;} }

.hero h1{ font-size:clamp(38px, 5.2vw, 64px); letter-spacing:1px; margin-bottom:20px; }
.hero .grad{
  background:linear-gradient(100deg,#E9C6E4 0%,#C98FC2 55%,#A6559D 100%);
  -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent; color:transparent;
}
.slogan{
  display:inline-block; margin-bottom:22px;
  font-size:17px; letter-spacing:2px; color:var(--zipu-light); font-weight:600;
}
.lead{ font-size:17.5px; color:rgba(255,255,255,.82); max-width:620px; margin-bottom:32px; }
.hero-actions{ display:flex; gap:14px; flex-wrap:wrap; margin-bottom:50px; }

.hero-stats{
  display:grid; grid-template-columns:repeat(4,1fr); gap:18px; margin:0;
  padding-top:28px; border-top:1px solid rgba(255,255,255,.16);
}
.hero-stats dt{
  font-size:32px; font-weight:700; line-height:1.1; margin:0;
  background:linear-gradient(100deg,#E9C6E4,#C98FC2);
  -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent; color:transparent;
}
.hero-stats dd{ margin:6px 0 0; font-size:13px; color:rgba(255,255,255,.66); }

/* Hero 图形：品牌三叶纹 */
.hero-visual{ display:flex; justify-content:center; }
.mark-wrap{ position:relative; width:400px; height:400px; display:flex; align-items:center; justify-content:center; }
.mark-core{
  width:200px; height:200px; border-radius:44px; background:var(--grad);
  box-shadow:0 20px 60px rgba(166,85,157,.42);
  display:flex; align-items:center; justify-content:center; position:relative; z-index:2;
}
.mark-core svg{ width:132px; height:132px; }
.orbit-ring{ position:absolute; border-radius:50%; border:1px solid rgba(255,255,255,.16); }
.r1{ width:290px; height:290px; border-style:dashed; animation:spin 30s linear infinite; }
.r2{ width:360px; height:360px; border-color:rgba(255,255,255,.1); animation:spin 44s linear infinite reverse; }
@keyframes spin{ to{ transform:rotate(360deg);} }
.node{
  position:absolute; z-index:3;
  padding:7px 14px; border-radius:999px;
  background:rgba(255,255,255,.1); border:1px solid rgba(255,255,255,.24);
  font-size:12.5px; color:rgba(255,255,255,.88); white-space:nowrap;
  backdrop-filter:blur(6px); animation:bob 5s ease-in-out infinite;
}
.n1{ top:6px;  left:50%; transform:translateX(-50%); }
.n2{ top:28%;  right:-4px; animation-delay:.6s; }
.n3{ bottom:20%; right:10px; animation-delay:1.2s; }
.n4{ bottom:2px; left:50%; transform:translateX(-50%); animation-delay:1.8s; }
.n5{ bottom:20%; left:10px; animation-delay:2.4s; }
.n6{ top:28%;  left:-4px; animation-delay:3s; }
@keyframes bob{ 0%,100%{ opacity:.7;} 50%{ opacity:1;} }

/* ---------------- 通用 section ---------------- */
.section{ position:relative; padding:108px 0; background:var(--paper); }
.section-alt{ background:var(--bg-soft); }
.section-alt::before,.section-alt::after{
  content:""; position:absolute; left:0; right:0; height:1px; background:var(--line);
}
.section-alt::before{ top:0; } .section-alt::after{ bottom:0; }

.sec-head{ max-width:720px; margin-bottom:54px; }
.sec-tag{
  display:inline-block; margin-bottom:16px; padding:5px 14px; border-radius:6px;
  background:rgba(166,85,157,.1); border:1px solid rgba(166,85,157,.28);
  color:var(--zipu); font-size:12.5px; letter-spacing:1.6px; font-weight:600;
}
.sec-head h2{ font-size:clamp(28px,3.4vw,40px); margin-bottom:16px; }
.sec-head p{ color:var(--muted); font-size:16.5px; }

/* ---------------- 卡片 ---------------- */
.card{
  background:var(--paper); border:1px solid var(--line); border-radius:var(--radius);
  padding:30px; box-shadow:var(--shadow);
  transition:transform .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.card:hover{ transform:translateY(-4px); border-color:var(--zipu-light); box-shadow:var(--shadow-lg); }
.two-col{ display:grid; grid-template-columns:1fr 1fr; gap:26px; }
.card-lg{ padding:38px; }

.card-icon{
  width:54px; height:54px; border-radius:15px; margin-bottom:22px;
  display:flex; align-items:center; justify-content:center;
  background:var(--grad); box-shadow:0 8px 18px rgba(166,85,157,.24);
}
.card-icon svg{ width:26px; height:26px; fill:#fff; }
.card-icon.alt svg{ fill:none; stroke:#fff; stroke-width:1.7; }
.card h3{ font-size:24px; margin-bottom:8px; }
.card-sub{ color:var(--zipu); font-size:13.5px; letter-spacing:.6px; margin-bottom:18px; font-weight:600; }
.card p{ color:var(--muted); font-size:15.5px; }

.list{ margin:18px 0 0; }
.list li{ position:relative; padding-left:20px; margin-bottom:11px; color:var(--muted); font-size:15px; }
.list li::before{
  content:""; position:absolute; left:0; top:11px;
  width:6px; height:6px; border-radius:50%; background:var(--zipu-light);
}
.list.check li{ padding-left:30px; }
.list.check li::before{
  content:""; top:8px; left:0; width:16px; height:16px; border-radius:5px;
  background:var(--grad);
  -webkit-mask:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><path d='M5 12.5 10 17.5 19 7' fill='none' stroke='%23fff' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'/></svg>") center/contain no-repeat;
  mask:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><path d='M5 12.5 10 17.5 19 7' fill='none' stroke='%23fff' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'/></svg>") center/contain no-repeat;
}
.list b{ color:var(--ink); font-weight:600; }

.link-arrow{ display:inline-block; margin-top:22px; color:var(--zipu); font-size:14.5px; font-weight:600; transition:transform .25s ease; }
.link-arrow:hover{ transform:translateX(4px); }

/* ---------------- Tabs ---------------- */
.tab-bar{
  display:flex; gap:8px; margin-bottom:30px; flex-wrap:wrap;
  padding:6px; background:var(--bg-soft); border:1px solid var(--line); border-radius:14px;
}
.tab{
  flex:1; min-width:170px; padding:13px 18px; border:0; border-radius:10px;
  background:transparent; color:var(--muted); font-family:inherit; font-size:15px; font-weight:600;
  cursor:pointer; transition:background .25s ease, color .25s ease, box-shadow .25s ease;
}
.tab:hover{ color:var(--zipu); background:rgba(255,255,255,.8); }
.tab.is-active{ background:var(--grad); color:#fff; box-shadow:0 6px 16px rgba(166,85,157,.26); }

.tab-panel{ display:none; }
.tab-panel.is-active{ display:block; animation:fadeUp .4s ease both; }
@keyframes fadeUp{ from{ opacity:0; transform:translateY(12px);} to{ opacity:1; transform:none;} }

.tab-grid{
  display:grid; grid-template-columns:1.4fr .6fr; gap:26px;
  background:var(--paper); border:1px solid var(--line); border-radius:var(--radius);
  padding:38px; box-shadow:var(--shadow);
}
.tab-copy h3{ font-size:26px; margin-bottom:12px; }
.tab-lead{ color:var(--muted); font-size:16.5px; margin-bottom:6px; }
.fit{
  margin-top:22px; padding:14px 18px; border-radius:12px;
  background:var(--bg-soft); border:1px solid rgba(166,85,157,.24);
  font-size:14.5px; color:var(--muted);
}
.fit b{ color:var(--zipu); }
.tab-side{ display:flex; flex-direction:column; gap:14px; }
.metric{
  padding:22px; border-radius:14px; text-align:center;
  background:linear-gradient(160deg, rgba(201,143,194,.16), rgba(106,46,102,.07));
  border:1px solid rgba(166,85,157,.18);
}
.metric-num{ display:block; font-size:19px; font-weight:700; color:var(--zipu-deep); }
.metric-label{ display:block; margin-top:6px; font-size:12.5px; color:var(--muted); }

/* ---------------- 蜂群 ---------------- */
.swarm-wrap{ display:grid; grid-template-columns:1.25fr .75fr; gap:30px; align-items:start; }
.swarm-diagram{
  background:var(--paper); border:1px solid var(--line);
  border-radius:var(--radius); padding:18px; box-shadow:var(--shadow);
}
.svg-diagram{ width:100%; height:auto; }
.d-title{ fill:#2E1630; font-size:14px; font-weight:600; font-family:inherit; }
.d-sub{ fill:#6B5B68; font-size:11.5px; font-family:inherit; }

.swarm-flow{ background:var(--paper); border:1px solid var(--line); border-radius:var(--radius); padding:28px 26px; box-shadow:var(--shadow); }
.flow li{ display:flex; gap:16px; margin-bottom:22px; }
.flow li:last-child{ margin-bottom:0; }
.flow-num{
  flex-shrink:0; width:40px; height:40px; border-radius:11px;
  display:flex; align-items:center; justify-content:center;
  background:var(--grad); color:#fff; font-size:14px; font-weight:700;
  box-shadow:0 6px 14px rgba(166,85,157,.22);
}
.flow h4{ font-size:16.5px; margin-bottom:4px; }
.flow p{ font-size:14px; color:var(--dim); }

.feat-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:20px; margin-top:30px; }
.feat-grid .card{ padding:26px; }
.feat-grid h4{ font-size:17px; margin-bottom:10px; }
.feat-grid p{ font-size:14.5px; }

/* ---------------- 架构 ---------------- */
.arch{ background:var(--paper); border:1px solid var(--line); border-radius:var(--radius); padding:34px; box-shadow:var(--shadow); }
.arch-row{ display:grid; grid-template-columns:130px 1fr; gap:22px; align-items:center; }
.arch-label{
  padding:10px 0; text-align:center; font-size:15px; font-weight:700; letter-spacing:1px;
  border-left:3px solid var(--zipu); color:var(--ink);
}
.arch-body{ display:flex; flex-wrap:wrap; gap:10px; padding:14px 0; }
.chip{ padding:8px 18px; border-radius:999px; font-size:14px; background:var(--bg-soft); border:1px solid var(--line); color:var(--muted); }
.chip-s{ border-color:rgba(201,143,194,.6); color:var(--zipu-deep); background:rgba(201,143,194,.12); }
.chip-p{ border-color:rgba(166,85,157,.45); color:var(--zipu); background:rgba(166,85,157,.1); font-weight:600; }
.chip-b{ border-color:var(--line-strong); color:var(--dim); }
.arch-arrow{ height:26px; margin-left:65px; width:2px; background:linear-gradient(180deg, rgba(166,85,157,.8), rgba(166,85,157,.12)); }

.note-block{
  margin-top:26px; padding:18px 22px; border-left:3px solid var(--zipu);
  background:var(--bg-soft); border-radius:0 12px 12px 0; font-size:14.5px; color:var(--muted);
}
.note-block b{ color:var(--ink); }

/* ---------------- 场景 ---------------- */
.scene-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
.card-scene{ position:relative; padding:32px 28px; }
.scene-idx{ display:inline-block; margin-bottom:16px; font-size:12.5px; font-weight:700; letter-spacing:1.5px; color:var(--zipu); }
.card-scene h3{ font-size:19px; margin-bottom:12px; }
.card-scene p{ font-size:14.5px; color:var(--muted); }
.tags{ display:flex; flex-wrap:wrap; gap:8px; margin-top:20px; }
.tags li{ padding:5px 12px; border-radius:6px; font-size:12.5px; background:var(--bg-soft); border:1px solid var(--line); color:var(--dim); }

/* ---------------- 表格 ---------------- */
.table-wrap{ overflow-x:auto; border:1px solid var(--line); border-radius:var(--radius); background:var(--paper); box-shadow:var(--shadow); }
.data-table{ width:100%; border-collapse:collapse; min-width:720px; }
.data-table th,.data-table td{ padding:17px 20px; text-align:left; font-size:15px; border-bottom:1px solid var(--line); }
.data-table thead th{
  background:var(--bg-soft); color:var(--ink); font-weight:700; font-size:14.5px; white-space:nowrap;
  border-bottom:1px solid var(--line-strong);
}
.data-table tbody tr:nth-child(even){ background:#FCFAFC; }
.data-table tbody tr:hover{ background:rgba(166,85,157,.06); }
.data-table td{ color:var(--muted); }
.data-table td b{ color:var(--ink); }
.table-note{ margin-top:14px; font-size:13.5px; color:var(--dim); }

/* ---------------- 关于 ---------------- */
.about-grid{ display:grid; grid-template-columns:1.25fr .75fr; gap:40px; align-items:start; }
.about-grid h2{ font-size:clamp(26px,3vw,34px); margin:14px 0 20px; }
.about-grid > div > p{ color:var(--muted); margin-bottom:14px; font-size:16px; }
.brand-pillars{ display:grid; grid-template-columns:repeat(2,1fr); gap:16px; margin:26px 0 30px; }
.pillar{
  padding:20px 22px; border-radius:14px; background:var(--bg-soft);
  border:1px solid var(--line); border-left:3px solid var(--zipu);
}
.pillar span{ display:block; font-size:12px; letter-spacing:1.4px; color:var(--zipu); font-weight:700; margin-bottom:6px; }
.pillar b{ display:block; font-size:16px; color:var(--ink); }
.about-method{ display:grid; grid-template-columns:repeat(2,1fr); gap:18px; margin-top:10px; }
.method-item{ padding:22px; border-radius:14px; background:var(--paper); border:1px solid var(--line); box-shadow:var(--shadow); }
.method-item span{ display:block; font-size:13px; font-weight:700; color:var(--zipu); letter-spacing:1.5px; margin-bottom:8px; }
.method-item b{ display:block; font-size:16.5px; margin-bottom:6px; color:var(--ink); }
.method-item p{ font-size:14px; color:var(--dim); }

.about-card{ background:var(--bg-soft); border:1px solid var(--line); border-radius:var(--radius); padding:32px; }
.about-card h3{ font-size:20px; margin-bottom:20px; }
.about-contact-box{ margin-top:26px; padding-top:22px; border-top:1px solid var(--line-strong); }
.about-contact-box p{ font-size:14px; color:var(--muted); margin-bottom:16px; }

/* ---------------- 联系 ---------------- */
.contact-grid{ display:grid; grid-template-columns:1.15fr .85fr; gap:30px; align-items:start; }
.contact-form{ background:var(--paper); border:1px solid var(--line); border-radius:var(--radius); padding:34px; box-shadow:var(--shadow); }
.field-row{ display:grid; grid-template-columns:1fr 1fr; gap:18px; }
.field{ margin-bottom:20px; }
.field label{ display:block; margin-bottom:8px; font-size:14px; color:var(--muted); }
.field label i{ color:var(--zipu); font-style:normal; }
.field input,.field select,.field textarea{
  width:100%; padding:13px 16px; border-radius:11px;
  background:var(--paper); border:1px solid var(--line-strong);
  color:var(--ink); font-family:inherit; font-size:15px;
  transition:border-color .25s ease, box-shadow .25s ease;
}
.field textarea{ resize:vertical; }
.field input::placeholder,.field textarea::placeholder{ color:#A796A4; }
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none; border-color:var(--zipu); box-shadow:0 0 0 3px rgba(166,85,157,.14);
}
.field select option{ background:var(--paper); color:var(--ink); }
.form-tip{ margin-top:14px; font-size:14px; min-height:22px; }
.form-tip.ok{ color:#2E7D5B; }
.form-tip.err{ color:#B23B52; }

.contact-info{ background:var(--bg-soft); border:1px solid var(--line); border-radius:var(--radius); padding:32px; }
.info-item{ margin-bottom:24px; }
.info-label{ display:block; font-size:12.5px; letter-spacing:1.4px; color:var(--dim); margin-bottom:6px; }
.info-item p{ font-size:15.5px; color:var(--ink); }
.info-item a{ color:var(--zipu); border-bottom:1px dashed rgba(166,85,157,.45); }
.info-placeholder{
  margin-top:8px; padding:14px 16px; border-radius:10px;
  border:1px dashed var(--line-strong); background:rgba(255,255,255,.6);
  font-size:13px; color:var(--dim);
}

/* ---------------- 页脚（深紫墨） ---------------- */
.footer{ padding:58px 0 30px; background:var(--dark); color:rgba(255,255,255,.78); border-top:1px solid var(--line); }
.footer-inner{ display:flex; flex-direction:column; gap:26px; }
.footer-brand{ display:flex; align-items:center; gap:16px; }
.footer-logo{ height:44px; width:auto; }
.footer-brand strong{ font-size:17px; letter-spacing:.6px; color:#fff; }
.footer-brand p{ font-size:13.5px; color:rgba(255,255,255,.6); margin-top:2px; }
.footer-slogan{ font-size:15px; letter-spacing:2px; color:var(--zipu-light); }
.footer-links{ display:flex; flex-wrap:wrap; gap:20px; }
.footer-links a{ font-size:14px; color:rgba(255,255,255,.66); transition:color .2s ease; }
.footer-links a:hover{ color:var(--zipu-light); }
.footer-bottom{
  display:flex; justify-content:space-between; flex-wrap:wrap; gap:10px;
  padding-top:22px; border-top:1px solid rgba(255,255,255,.14);
  font-size:13px; color:rgba(255,255,255,.5);
}

/* ---------------- 滚动动画 ---------------- */
.reveal{ opacity:0; transform:translateY(26px); transition:opacity .7s ease, transform .7s ease; }
.reveal.is-in{ opacity:1; transform:none; }

/* ---------------- 响应式 ---------------- */
@media (max-width:1080px){
  .nav-links{
    position:fixed; top:var(--nav-h); left:0; right:0;
    flex-direction:column; align-items:stretch; gap:0;
    background:rgba(255,255,255,.98); backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line); padding:10px 24px 20px;
    max-height:0; overflow:hidden; opacity:0;
    transition:max-height .32s ease, opacity .25s ease, padding .32s ease;
  }
  .nav-links.is-open{ max-height:420px; opacity:1; box-shadow:0 16px 30px rgba(46,22,48,.1); }
  .nav-links a{ padding:13px 4px; font-size:15.5px; border-radius:0; border-bottom:1px solid var(--line); }
  .nav-links a.is-active::after{ display:none; }
  .nav-toggle{ display:block; }
  .nav-cta{ display:none; }
  .brand-sub{ display:none; }

  .hero-inner{ grid-template-columns:1fr; gap:48px; }
  .hero-visual{ order:-1; }
  .mark-wrap{ width:320px; height:320px; }
  .mark-core{ width:160px; height:160px; border-radius:36px; }
  .mark-core svg{ width:106px; height:106px; }
  .r1{ width:235px; height:235px; } .r2{ width:300px; height:300px; }

  .two-col,.tab-grid,.swarm-wrap,.about-grid,.contact-grid{ grid-template-columns:1fr; }
  .feat-grid{ grid-template-columns:repeat(2,1fr); }
  .scene-grid{ grid-template-columns:repeat(2,1fr); }
  .section{ padding:84px 0; }
}

@media (max-width:680px){
  .container{ padding:0 18px; }
  .hero{ min-height:auto; padding-top:calc(var(--nav-h) + 48px); }
  .hero-stats{ grid-template-columns:repeat(2,1fr); gap:22px 14px; }
  .hero-stats dt{ font-size:27px; }
  .feat-grid,.scene-grid,.about-method,.brand-pillars,.field-row{ grid-template-columns:1fr; }
  .card-lg,.tab-grid,.contact-form,.contact-info,.about-card{ padding:24px; }
  .arch{ padding:22px; }
  .arch-row{ grid-template-columns:1fr; gap:10px; }
  .arch-label{ text-align:left; padding-left:12px; }
  .arch-arrow{ margin-left:12px; }
  .mark-wrap{ width:270px; height:270px; }
  .mark-core{ width:134px; height:134px; border-radius:30px; }
  .mark-core svg{ width:88px; height:88px; }
  .r1{ width:198px; height:198px; } .r2{ width:255px; height:255px; }
  .node{ font-size:11px; padding:5px 10px; }
  .btn{ padding:11px 22px; }
  .footer-bottom{ flex-direction:column; }
}

@media (prefers-reduced-motion:reduce){
  *{ animation:none !important; transition:none !important; }
  .reveal{ opacity:1; transform:none; }
}