/* =========================================================================
   招商轮船智能体矩阵 · 引导页主题
   设计基因照抄自 2026 世界航商大会提案页「方案C 潮涌蓝界 蓝色系」
   （https://wmm.thinkalike.com.cn/01/），:root 变量、白底、固定白底 blur 导航、
   全屏视频 banner、渐变遮罩、orb 光晕、粒子动效均原样摘用，不自创风格。
   动效铁律：只动 transform / opacity；prefers-reduced-motion 降级；
   不做高频 box-shadow 动画（.nav.scrolled 的阴影只在状态切换时过渡一次）。
   ========================================================================= */

:root {
  --navy-950:#070f1a; --navy-900:#0d1b2a; --navy-800:#1a3a5c; --navy-700:#1a5276;
  --navy-600:#2471a3; --navy-500:#2980b9; --navy-400:#5dade2; --navy-300:#85c1e9;
  --navy-200:#aed6f1; --navy-100:#d4e6f1; --navy-50:#eaf2f8;
  --cyan-500:#1abc9c; --cyan-400:#48c9b0; --cyan-300:#76d7c4;
  --gray-700:#2c3e50; --gray-600:#4a6a8a; --gray-500:#5d7f9c; --gray-400:#8a9ab0;
  --gray-300:#b0c4d4; --gray-100:#f4f7fa; --white:#fff;
  --amber-500:#e67e22; --red-500:#c0392b;
  --nav-h:72px;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Inter','Segoe UI','Microsoft YaHei','PingFang SC','Noto Sans SC',sans-serif;
  background:var(--white);overflow-x:hidden;color:var(--navy-900);-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
button{font:inherit}

/* ===== 导航栏 · 白底线条式 ===== */
.nav{position:fixed;top:0;left:0;width:100%;height:var(--nav-h);display:flex;align-items:center;
  justify-content:space-between;padding:0 64px;z-index:1000;background:rgba(255,255,255,0.95);
  backdrop-filter:blur(20px);border-bottom:1px solid rgba(26,82,118,0.06);transition:box-shadow .4s}
.nav.scrolled{box-shadow:0 4px 28px rgba(10,22,40,0.08)}
.nav-logo{display:flex;align-items:center;gap:14px}
.nav-logo img,.nav-logo svg{height:40px;width:auto}
.nav-logo-text{font-size:13px;font-weight:700;color:var(--navy-900);letter-spacing:2px;line-height:1.3}
.nav-logo-text small{display:block;font-size:10px;color:var(--gray-400);font-weight:400;letter-spacing:1px}
.nav-menu{display:flex;gap:36px}
.nav-menu a{color:var(--gray-500);font-size:14px;font-weight:600;letter-spacing:2px;position:relative;
  padding:6px 0;transition:color .3s}
.nav-menu a::after{content:'';position:absolute;bottom:0;left:0;width:0;height:2px;
  background:linear-gradient(90deg,var(--navy-500),var(--cyan-500));transition:width .3s cubic-bezier(.4,0,.2,1);border-radius:1px}
.nav-menu a:hover,.nav-menu a.active{color:var(--navy-900)}
.nav-menu a:hover::after,.nav-menu a.active::after{width:100%}
.nav-right{display:flex;align-items:center;gap:16px}
.btn-login{color:var(--gray-500)!important;font-size:13px;font-weight:500;letter-spacing:1px;transition:color .3s}
.btn-login:hover{color:var(--navy-700)!important}
.btn-register{background:linear-gradient(135deg,var(--navy-700),var(--navy-600));color:#fff!important;
  padding:10px 26px;border-radius:24px;font-size:13px;font-weight:700;letter-spacing:1px;
  transition:transform .3s,box-shadow .3s;box-shadow:0 2px 12px rgba(26,82,118,0.15)}
.btn-register:hover{transform:translateY(-1px);box-shadow:0 6px 20px rgba(26,82,118,0.3)}
.nav-hamburger{display:none;width:32px;height:32px;flex-direction:column;justify-content:center;gap:5px;
  cursor:pointer;z-index:1001;background:none;border:none;padding:0}
.nav-hamburger span{display:block;width:100%;height:2px;background:var(--navy-900);border-radius:1px;transition:transform .3s,opacity .3s}

/* ===== Banner · 全屏视频沉浸 ===== */
.banner{position:relative;width:100%;height:100vh;min-height:700px;overflow:hidden;background:var(--navy-950)}
.banner video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.banner-overlay{position:absolute;inset:0;z-index:1;
  background:linear-gradient(160deg,rgba(10,22,40,0.82) 0%,rgba(13,27,42,0.4) 45%,rgba(10,22,40,0.75) 100%)}
.video-ambient{position:absolute;inset:0;z-index:2;pointer-events:none;overflow:hidden}
.video-ambient .orb{position:absolute;border-radius:50%;filter:blur(80px)}
.v-orb-1{width:400px;height:400px;background:rgba(41,128,185,0.25);top:-10%;right:10%;animation:v-orb 8s infinite ease-in-out}
.v-orb-2{width:300px;height:300px;background:rgba(26,188,156,0.12);bottom:10%;left:5%;animation:v-orb 10s infinite ease-in-out 2s}
@keyframes v-orb{0%,100%{transform:translate(0,0) scale(1);opacity:.2}50%{transform:translate(15px,-10px) scale(1.08);opacity:.4}}
.v-particles{position:absolute;inset:0;z-index:4;pointer-events:none;overflow:hidden}
.v-particle{position:absolute;border-radius:50%;width:2px;height:2px;background:rgba(255,255,255,0.5);animation:v-rise 8s infinite linear}
.v-particle.glow{width:5px;height:5px;background:radial-gradient(circle,rgba(93,173,226,0.7) 0%,transparent 70%)}
@keyframes v-rise{0%{transform:translateY(0) translateX(0);opacity:0}8%{opacity:1}85%{opacity:.5}100%{transform:translateY(-110vh) translateX(30px);opacity:0}}
.v-halo{position:absolute;border-radius:50%;pointer-events:none;z-index:3;border:1px solid rgba(93,173,226,0.15);
  animation:v-halo 5s infinite cubic-bezier(0,.5,.5,1)}
@keyframes v-halo{0%{transform:scale(.7);opacity:.7}100%{transform:scale(2.2);opacity:0}}

.banner-content{position:absolute;top:50%;left:80px;transform:translateY(-55%);z-index:10;max-width:760px}
.banner-tag{font-size:14px;font-weight:700;letter-spacing:6px;color:rgba(255,255,255,0.55);margin-bottom:22px}
.banner-title .line1{font-size:58px;font-weight:900;color:var(--white);line-height:1.18;letter-spacing:4px}
.banner-title .line1 .highlight{background:linear-gradient(90deg,var(--navy-300),var(--cyan-400));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.banner-divider{width:56px;height:3px;background:linear-gradient(90deg,var(--navy-300),var(--navy-400),var(--cyan-400));
  margin:28px 0;border-radius:2px}
.banner-slogan{font-size:17px;color:rgba(255,255,255,0.72);font-weight:400;letter-spacing:2px;
  margin-bottom:36px;line-height:1.9;max-width:640px}
.banner-actions{display:flex;gap:16px;align-items:center;flex-wrap:wrap}
.btn-ghost{display:inline-flex;align-items:center;gap:10px;padding:14px 32px;border-radius:30px;font-size:15px;
  font-weight:600;letter-spacing:1px;color:#fff;border:1px solid rgba(255,255,255,0.35);transition:transform .3s,background-color .3s}
.btn-ghost:hover{background:rgba(255,255,255,0.12);transform:translateY(-1px)}
.btn-solid{display:inline-flex;align-items:center;gap:10px;padding:14px 32px;border-radius:30px;font-size:15px;
  font-weight:700;letter-spacing:1px;color:#fff;background:linear-gradient(135deg,var(--navy-600),var(--cyan-500));
  transition:transform .3s;box-shadow:0 6px 24px rgba(26,188,156,0.25)}
.btn-solid:hover{transform:translateY(-2px)}
.scroll-hint{position:absolute;bottom:28px;left:50%;transform:translateX(-50%);z-index:10;
  display:flex;flex-direction:column;align-items:center;gap:8px}
.scroll-hint span{color:rgba(255,255,255,0.3);font-size:11px;letter-spacing:4px;font-weight:500}
.scroll-hint .arrow{width:14px;height:14px;border-right:1.5px solid rgba(255,255,255,0.3);
  border-bottom:1.5px solid rgba(255,255,255,0.3);transform:rotate(45deg);animation:arrow-b 2s infinite}
@keyframes arrow-b{0%,100%{transform:rotate(45deg) translateY(0);opacity:.3}50%{transform:rotate(45deg) translateY(5px);opacity:.7}}

/* ===== 区块通用 ===== */
.section{padding:112px 80px;position:relative}
.section.tint{background:var(--gray-100)}
.section.dark{background:linear-gradient(150deg,var(--navy-950),var(--navy-900) 60%,var(--navy-800));color:#fff}
.section-badge{display:inline-block;font-size:12px;color:var(--navy-500);font-weight:700;letter-spacing:4px;
  border:1px solid rgba(41,128,185,0.2);padding:8px 18px;border-radius:20px;margin-bottom:20px}
.section.dark .section-badge{color:var(--navy-200);border-color:rgba(174,214,241,0.24)}
.section-title{font-size:44px;font-weight:900;color:var(--navy-900);line-height:1.24;letter-spacing:1px}
.section.dark .section-title{color:#fff}
.section-title .accent{background:linear-gradient(90deg,var(--navy-700),var(--navy-400));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.section.dark .section-title .accent{background:linear-gradient(90deg,var(--navy-200),var(--cyan-400));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.section-sub{font-size:16px;color:var(--gray-600);line-height:2;margin-top:20px;max-width:820px}
.section.dark .section-sub{color:rgba(255,255,255,0.6)}
.section-head{margin-bottom:56px}
.section-head.center{text-align:center}
.section-head.center .section-sub{margin-left:auto;margin-right:auto}

/* 双栏介绍 */
.split{display:grid;grid-template-columns:1fr 1fr;gap:72px;align-items:start}
.split h2{font-size:46px;font-weight:900;line-height:1.22}
.split .accent-text{background:linear-gradient(90deg,var(--navy-700),var(--navy-400));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.split p{font-size:17px;color:var(--gray-600);line-height:2;margin-bottom:18px}

/* 痛点四条 */
.pain-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:56px}
.pain-card{background:var(--white);border:1px solid rgba(10,22,40,0.06);border-radius:16px;padding:30px 26px;
  box-shadow:0 2px 12px rgba(10,22,40,0.03);transition:transform .4s cubic-bezier(.4,0,.2,1)}
.pain-card:hover{transform:translateY(-4px)}
.pain-card .no{font-size:12px;font-weight:800;letter-spacing:3px;color:var(--navy-300)}
.pain-card h3{font-size:19px;font-weight:800;color:var(--navy-900);margin:12px 0 10px}
.pain-card p{font-size:14px;color:var(--gray-500);line-height:1.9}
.pain-card .result{margin-top:16px;padding-top:14px;border-top:1px dashed rgba(10,22,40,0.08);
  font-size:13px;color:var(--navy-600);line-height:1.8}

/* ===== 智能体矩阵 ===== */
.agent-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.agent-card{position:relative;background:var(--white);border:1.5px solid rgba(10,22,40,0.06);border-radius:20px;
  padding:36px 32px;display:flex;flex-direction:column;min-height:330px;overflow:hidden;
  transition:transform .4s cubic-bezier(.4,0,.2,1),border-color .3s}
.agent-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;
  background:linear-gradient(90deg,var(--navy-500),var(--cyan-400));opacity:0;transition:opacity .3s}
.agent-card:hover{transform:translateY(-6px);border-color:rgba(41,128,185,0.22)}
.agent-card:hover::before{opacity:1}
.agent-card .idx{font-size:13px;font-weight:800;letter-spacing:3px;color:var(--navy-300)}
.agent-card h3{font-size:23px;font-weight:900;color:var(--navy-900);margin:10px 0 14px;letter-spacing:1px}
.agent-card .desc{font-size:14.5px;color:var(--gray-500);line-height:1.95;flex:1}
.agent-card .tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.tag{font-size:12px;color:var(--navy-600);background:var(--navy-50);border-radius:12px;padding:5px 12px;letter-spacing:.5px}
.agent-card .go{margin-top:20px;display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:700;
  color:var(--navy-700);transition:gap .3s}
.agent-card:hover .go{gap:14px}
.agent-card.live{border-color:rgba(26,188,156,0.35)}
.status{position:absolute;top:26px;right:26px;font-size:11px;font-weight:700;letter-spacing:1px;
  padding:5px 12px;border-radius:12px}
.status.live{color:#fff;background:var(--cyan-500)}
.status.p1{color:var(--navy-700);background:var(--navy-100)}
.status.plan{color:var(--gray-500);background:var(--gray-100);border:1px solid rgba(10,22,40,0.06)}

/* ===== 能力分层图 ===== */
.layers{display:flex;flex-direction:column;gap:14px;margin-top:8px}
.layer{display:grid;grid-template-columns:190px 1fr;gap:26px;align-items:center;background:rgba(255,255,255,0.05);
  border:1px solid rgba(255,255,255,0.1);border-radius:14px;padding:22px 28px;transition:transform .3s,background-color .3s}
.layer:hover{transform:translateX(6px);background:rgba(255,255,255,0.09)}
.layer .lname{font-size:18px;font-weight:800;color:#fff;letter-spacing:1px}
.layer .lname small{display:block;font-size:12px;font-weight:400;color:rgba(255,255,255,0.4);letter-spacing:2px;margin-top:4px}
.layer .ldesc{font-size:14px;color:rgba(255,255,255,0.62);line-height:1.9}
.layer .ldesc em{font-style:normal;color:var(--cyan-300)}
.layer.top{background:rgba(26,188,156,0.1);border-color:rgba(26,188,156,0.28)}
.version-note{margin-top:26px;padding:22px 28px;border:1px dashed rgba(174,214,241,0.3);border-radius:14px;
  font-size:14px;color:rgba(255,255,255,0.7);line-height:2}
.version-note code{color:var(--cyan-300);font-family:'Cascadia Code','Consolas',monospace;font-size:13px}

/* ===== 三期路线 ===== */
.phase-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.phase{background:var(--white);border-radius:20px;padding:36px 32px;border:1.5px solid rgba(10,22,40,0.06);
  box-shadow:0 2px 12px rgba(10,22,40,0.03);position:relative;overflow:hidden;transition:transform .4s}
.phase:hover{transform:translateY(-4px)}
.phase .ph-no{font-size:12px;font-weight:800;letter-spacing:3px;color:var(--navy-300)}
.phase .ph-name{font-size:24px;font-weight:900;color:var(--navy-900);margin:10px 0 4px}
.phase .ph-time{font-size:13px;color:var(--gray-400);letter-spacing:1px;margin-bottom:18px}
.phase .ph-goal{font-size:15px;color:var(--navy-700);font-weight:600;line-height:1.8;margin-bottom:16px}
.phase ul{list-style:none}
.phase li{font-size:13.5px;color:var(--gray-500);line-height:1.9;padding-left:18px;position:relative;margin-bottom:8px}
.phase li::before{content:'';position:absolute;left:0;top:10px;width:7px;height:7px;border-radius:50%;background:var(--navy-200)}
.phase.key{border-color:rgba(41,128,185,0.3)}
.phase.key::after{content:'验收口径';position:absolute;top:20px;right:-34px;transform:rotate(38deg);
  background:linear-gradient(135deg,var(--navy-600),var(--cyan-500));color:#fff;font-size:11px;
  letter-spacing:2px;padding:5px 40px}

/* ===== 阶段 0 五件 + 八项门槛 ===== */
.duo{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:start}
.mini-title{font-size:22px;font-weight:900;color:var(--navy-900);margin-bottom:8px;letter-spacing:1px}
.mini-note{font-size:14px;color:var(--gray-500);line-height:1.9;margin-bottom:26px}
.check-list{list-style:none}
.check-list li{display:flex;gap:16px;padding:18px 0;border-bottom:1px solid rgba(10,22,40,0.06)}
.check-list li:last-child{border-bottom:none}
.check-list .mk{flex-shrink:0;width:26px;height:26px;border-radius:8px;background:var(--navy-50);
  color:var(--navy-600);font-size:12px;font-weight:800;display:flex;align-items:center;justify-content:center;margin-top:2px}
.check-list .txt strong{display:block;font-size:15.5px;color:var(--navy-900);font-weight:800;margin-bottom:6px}
.check-list .txt span{font-size:13.5px;color:var(--gray-500);line-height:1.9}
.gate-table{width:100%;border-collapse:collapse;font-size:13.5px}
.gate-table th{text-align:left;font-size:12px;letter-spacing:2px;color:var(--gray-400);font-weight:600;
  padding:0 0 12px;border-bottom:1px solid rgba(10,22,40,0.08)}
.gate-table td{padding:13px 10px 13px 0;border-bottom:1px solid rgba(10,22,40,0.05);color:var(--gray-600);line-height:1.7;vertical-align:top}
.gate-table td.dim{color:var(--navy-600);font-weight:700;white-space:nowrap}
.gate-table td.num{font-family:'Cascadia Code','Consolas',monospace;color:var(--cyan-500);white-space:nowrap}

/* 指标条 */
.stat-row{display:flex;gap:56px;flex-wrap:wrap;margin-top:64px;padding-top:48px;border-top:1px solid rgba(10,22,40,0.06)}
.stat .num{font-size:40px;font-weight:900;color:var(--navy-900);line-height:1}
.stat .num span{color:var(--navy-500);font-size:24px}
.stat .lbl{font-size:13px;color:var(--gray-400);margin-top:10px;letter-spacing:2px;font-weight:500}
.section.dark .stat-row{border-top-color:rgba(255,255,255,0.08)}
.section.dark .stat .num{color:#fff}
.section.dark .stat .num span{color:var(--cyan-400)}

/* ===== 智能体详情页 ===== */
.page-head{position:relative;padding:calc(var(--nav-h) + 84px) 80px 76px;background:var(--navy-950);
  overflow:hidden;color:#fff}
.page-head .glow{position:absolute;width:620px;height:620px;border-radius:50%;filter:blur(90px);
  background:rgba(41,128,185,0.22);top:-260px;right:-120px;pointer-events:none}
.crumb{position:relative;z-index:2;font-size:13px;letter-spacing:2px;color:rgba(255,255,255,0.45);margin-bottom:22px}
.crumb a:hover{color:var(--navy-300)}
.page-head h1{position:relative;z-index:2;font-size:46px;font-weight:900;letter-spacing:2px;line-height:1.2}
.page-head .one-line{position:relative;z-index:2;font-size:17px;color:rgba(255,255,255,0.68);line-height:2;
  margin-top:20px;max-width:760px}
.page-head .meta{position:relative;z-index:2;display:flex;gap:14px;align-items:center;margin-top:30px;flex-wrap:wrap}
.chip{font-size:12.5px;letter-spacing:1px;padding:7px 16px;border-radius:16px;
  border:1px solid rgba(255,255,255,0.18);color:rgba(255,255,255,0.75)}
.chip.live{background:rgba(26,188,156,0.16);border-color:rgba(26,188,156,0.45);color:var(--cyan-300)}
.chip.plan{background:rgba(255,255,255,0.06)}

.block{padding:88px 80px;border-bottom:1px solid rgba(10,22,40,0.06)}
.block:last-of-type{border-bottom:none}
.block h2{font-size:28px;font-weight:900;color:var(--navy-900);letter-spacing:1px;margin-bottom:10px}
.block .lead{font-size:15.5px;color:var(--gray-500);line-height:2;margin-bottom:34px;max-width:900px}
.basis{margin-top:28px;padding:18px 24px;background:var(--navy-50);border-left:3px solid var(--navy-400);
  font-size:13.5px;color:var(--navy-700);line-height:1.95;border-radius:0 10px 10px 0}
.basis b{color:var(--navy-800)}
.basis.warn{background:#fdf3e7;border-left-color:var(--amber-500);color:#8a5320}

.feat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.feat{display:flex;gap:16px;padding:24px;border:1px solid rgba(10,22,40,0.06);border-radius:14px;background:var(--white);
  transition:transform .3s,border-color .3s}
.feat:hover{transform:translateY(-3px);border-color:rgba(41,128,185,0.22)}
.feat .dot{flex-shrink:0;width:9px;height:9px;border-radius:50%;background:var(--cyan-500);margin-top:9px}
.feat .dot.b{background:var(--navy-500)}
.feat strong{display:block;font-size:15.5px;color:var(--navy-900);margin-bottom:6px;font-weight:800}
.feat p{font-size:13.5px;color:var(--gray-500);line-height:1.9}

/* 视图预览墙 */
.shot-wall{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;margin-top:8px}
.shot{display:block;background:var(--gray-100);border:1px solid rgba(10,22,40,0.06);border-radius:12px;
  padding:18px 16px;transition:transform .3s,background-color .3s}
.shot:hover{transform:translateY(-3px);background:var(--navy-50)}
.shot .k{font-size:11px;letter-spacing:2px;color:var(--navy-400);font-family:'Cascadia Code','Consolas',monospace}
.shot .n{font-size:14.5px;font-weight:700;color:var(--navy-900);margin-top:8px}
.shot .d{font-size:12px;color:var(--gray-400);margin-top:6px;line-height:1.7}

/* 表格 */
.tbl{width:100%;border-collapse:collapse;font-size:14px;background:var(--white)}
.tbl th{background:var(--navy-50);color:var(--navy-800);font-weight:700;text-align:left;padding:14px 16px;
  border-bottom:1px solid rgba(41,128,185,0.15);font-size:13px;letter-spacing:1px}
.tbl td{padding:14px 16px;border-bottom:1px solid rgba(10,22,40,0.06);color:var(--gray-600);line-height:1.8;vertical-align:top}
.tbl tr:hover td{background:rgba(234,242,248,0.5)}
.tbl td.k{font-weight:700;color:var(--navy-800);white-space:nowrap}
.pill{display:inline-block;font-size:11.5px;padding:3px 10px;border-radius:10px;background:var(--navy-100);color:var(--navy-700)}
.pill.c{background:rgba(26,188,156,0.14);color:#127a63}
.pill.w{background:#fdf0e0;color:#96580f}

.cta-row{display:flex;gap:16px;flex-wrap:wrap;margin-top:8px}
.cta{display:inline-flex;align-items:center;gap:10px;padding:15px 30px;border-radius:28px;font-size:15px;
  font-weight:700;letter-spacing:1px;background:linear-gradient(135deg,var(--navy-700),var(--navy-600));color:#fff;
  transition:transform .3s;box-shadow:0 4px 18px rgba(26,82,118,0.2)}
.cta:hover{transform:translateY(-2px)}
.cta.alt{background:var(--white);color:var(--navy-700);border:1px solid rgba(26,82,118,0.22);box-shadow:none}
.cta.alt:hover{background:var(--navy-50)}

/* 示意数据角标 */
.demo-flag{position:fixed;right:22px;bottom:22px;z-index:1200;background:rgba(13,27,42,0.9);color:#fff;
  font-size:12px;letter-spacing:1px;padding:10px 16px;border-radius:20px;backdrop-filter:blur(8px);
  border:1px solid rgba(255,255,255,0.12)}
.demo-flag i{font-style:normal;color:var(--cyan-400)}

/* ===== 登录页 ===== */
.login-wrap{min-height:100vh;display:grid;grid-template-columns:1.1fr 1fr}
.login-visual{position:relative;background:var(--navy-950);overflow:hidden;display:flex;align-items:flex-end;padding:64px}
.login-visual video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.login-visual .banner-overlay{background:linear-gradient(150deg,rgba(10,22,40,0.86),rgba(13,27,42,0.5) 55%,rgba(10,22,40,0.8))}
.login-visual .copy{position:relative;z-index:5;color:#fff}
.login-visual .copy h2{font-size:34px;font-weight:900;letter-spacing:2px;line-height:1.4}
.login-visual .copy p{font-size:15px;color:rgba(255,255,255,0.6);line-height:2;margin-top:16px;max-width:460px}
.login-form-side{display:flex;align-items:center;justify-content:center;padding:64px 56px;background:var(--white)}
.login-box{width:100%;max-width:380px}
.login-box h1{font-size:26px;font-weight:900;color:var(--navy-900);letter-spacing:1px}
.login-box .sub{font-size:14px;color:var(--gray-400);margin:10px 0 36px;line-height:1.9}
.field{margin-bottom:20px}
.field label{display:block;font-size:12px;letter-spacing:2px;color:var(--gray-500);font-weight:600;margin-bottom:9px}
.field input{width:100%;height:50px;padding:0 16px;border:1px solid var(--navy-100);border-radius:10px;
  font-size:15px;color:var(--navy-900);background:var(--white);transition:border-color .3s,box-shadow .3s;outline:none}
.field input:focus{border-color:var(--navy-400);box-shadow:0 0 0 3px rgba(93,173,226,0.16)}
.btn-submit{width:100%;height:52px;border:none;border-radius:10px;cursor:pointer;font-size:15px;font-weight:700;
  letter-spacing:2px;color:#fff;background:linear-gradient(135deg,var(--navy-700),var(--navy-600));
  transition:transform .3s,opacity .3s;margin-top:8px}
.btn-submit:hover{transform:translateY(-1px)}
.btn-submit[disabled]{opacity:.55;cursor:not-allowed;transform:none}
.form-msg{min-height:22px;margin-top:16px;font-size:13.5px;line-height:1.8}
.form-msg.err{color:var(--red-500)}
.form-msg.ok{color:var(--cyan-500)}
.login-tip{margin-top:28px;padding-top:22px;border-top:1px solid rgba(10,22,40,0.06);
  font-size:12.5px;color:var(--gray-400);line-height:1.95}

/* ===== 页脚 ===== */
.footer-top{background:rgba(10,22,40,0.97);padding:52px 80px;display:flex;justify-content:space-between;
  align-items:flex-start;gap:40px;flex-wrap:wrap}
.footer-contact h4{font-size:12px;color:rgba(255,255,255,0.32);letter-spacing:3px;margin-bottom:14px;font-weight:600}
.footer-contact p{color:rgba(255,255,255,0.62);font-size:14.5px;margin-bottom:8px;line-height:1.9}
.footer-links{display:flex;gap:34px;flex-wrap:wrap}
.footer-links a{color:rgba(255,255,255,0.45);font-size:13.5px;transition:color .3s}
.footer-links a:hover{color:var(--navy-300)}
.footer{padding:26px 80px;background:#060d16;color:rgba(255,255,255,0.26);font-size:12.5px;
  display:flex;justify-content:space-between;align-items:center;gap:18px;flex-wrap:wrap}

/* ===== 入场动画 ===== */
.fade-up{opacity:0;transform:translateY(30px);transition:opacity .8s cubic-bezier(.4,0,.2,1),transform .8s cubic-bezier(.4,0,.2,1)}
.fade-up.visible{opacity:1;transform:translateY(0)}

/* ===== 响应式 ===== */
@media(max-width:1180px){
  .agent-grid,.phase-grid{grid-template-columns:repeat(2,1fr)}
  .pain-grid{grid-template-columns:repeat(2,1fr)}
  .shot-wall{grid-template-columns:repeat(3,1fr)}
  .duo{grid-template-columns:1fr;gap:44px}
}
@media(max-width:900px){
  .split{grid-template-columns:1fr;gap:36px}
  .login-wrap{grid-template-columns:1fr}
  .login-visual{min-height:320px;padding:40px}
}
@media(max-width:768px){
  .nav{padding:0 24px}
  .nav-hamburger{display:flex}
  .nav-menu{display:none}
  .nav-menu.open{display:flex;position:fixed;top:var(--nav-h);left:0;right:0;flex-direction:column;gap:0;
    background:rgba(255,255,255,0.98);backdrop-filter:blur(20px);padding:12px 0;border-bottom:1px solid rgba(26,82,118,0.08)}
  .nav-menu.open a{padding:14px 24px}
  .banner-content{left:24px;right:24px;max-width:none;transform:translateY(-55%)}
  .banner-title .line1{font-size:34px;letter-spacing:2px}
  .banner-slogan{font-size:14.5px}
  .section{padding:64px 24px}
  .section-title{font-size:30px}
  .split h2{font-size:32px}
  .pain-grid,.agent-grid,.phase-grid,.feat-grid{grid-template-columns:1fr}
  .shot-wall{grid-template-columns:repeat(2,1fr)}
  .stat-row{gap:28px}
  .stat .num{font-size:32px}
  .page-head{padding:calc(var(--nav-h) + 48px) 24px 44px}
  .page-head h1{font-size:30px}
  .block{padding:56px 24px}
  .footer-top,.footer{padding-left:24px;padding-right:24px}
  .login-form-side{padding:44px 24px}
  .tbl thead{display:none}
  .tbl td{display:block;border-bottom:none;padding:4px 0}
  .tbl tr{display:block;border-bottom:1px solid rgba(10,22,40,0.08);padding:14px 0}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;
    transition-duration:.001ms!important;scroll-behavior:auto!important}
  .fade-up{opacity:1;transform:none}
}