/**
 * 小瓦AI·SEM 落地页基础设计系统
 * 与小瓦AI主站共用色板、导航、卡片、按钮体系
 * 加载顺序：site-layout.css → site-visual-refine.css → sem-page.css（本文件最后，可覆盖）
 */

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root{
  --c-bg:#0a0e1a;
  --c-surface:#111827;
  --c-surface-2:#1a2236;
  --c-border:#1e293b;
  --c-text:#e2e8f0;
  --c-text-2:#94a3b8;
  --c-text-3:#64748b;
  --c-accent:#a855f7;
  --c-accent-2:#d946ef;
  --c-accent-g:linear-gradient(135deg,#8b5cf6,#d946ef);
  --c-success:#10b981;
  --c-warn:#f59e0b;
  --c-white:#ffffff;
  --radius:12px;
  --radius-lg:20px;
  --max-w:1120px;
  --section-py:clamp(48px,7vw,88px);
  --section-py-mob:clamp(40px,5.5vw,56px);
  --section-head-gap:clamp(24px,3.5vw,32px);
  --section-head-gap-mob:clamp(24px,3.5vw,32px);
  --nav-h:64px;
}

html{-webkit-text-size-adjust:100%}

body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--c-bg);color:var(--c-text);line-height:1.7;
  overflow-x:hidden;padding-top:calc(var(--nav-h) + env(safe-area-inset-top,0px));
}
body.nav-menu-open{overflow:hidden;overscroll-behavior:none;touch-action:none}

a{color:var(--c-accent);text-decoration:none}
img{max-width:100%;display:block}

.wrap{max-width:var(--max-w);margin:0 auto;padding:0 clamp(20px,4vw,40px)}
section{padding:var(--section-py) 0;position:relative}

h1,h2,h3{line-height:1.25;font-weight:700}
h1{font-size:clamp(2rem,5vw,3.5rem);letter-spacing:-.02em}
h2{font-size:clamp(1.5rem,3.5vw,2.4rem);letter-spacing:-.01em}
h3{font-size:clamp(1.1rem,2vw,1.5rem)}

.gradient-text{background:var(--c-accent-g);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.logo-aim{font-weight:inherit;background:var(--c-accent-g);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}

.tag{display:inline-block;padding:4px 14px;border-radius:99px;font-size:.8rem;font-weight:600;background:rgba(139,92,246,.15);color:var(--c-accent);margin-bottom:12px}
.tag--warn{background:rgba(245,158,11,.15);color:var(--c-warn)}
.tag--success{background:rgba(16,185,129,.15);color:var(--c-success)}

.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ============ NAVBAR ============ */
.navbar{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  min-height:calc(var(--nav-h) + env(safe-area-inset-top,0px));
  display:flex;align-items:stretch;
  padding-left:max(0px,env(safe-area-inset-left));
  padding-right:max(0px,env(safe-area-inset-right));
  padding-top:env(safe-area-inset-top,0);
  background:rgba(10,14,26,.82);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid transparent;
  transition:border-color .3s,background .3s;
}
.navbar.scrolled{border-bottom-color:var(--c-border);background:rgba(10,14,26,.92)}
.navbar .wrap{display:flex;align-items:center;justify-content:space-between;gap:10px;width:100%;min-height:var(--nav-h)}
.navbar .nav-toolbar{display:flex;align-items:center;justify-content:flex-end;gap:clamp(6px,1.6vw,10px);margin-left:auto;min-width:0;flex-shrink:0}

.nav-logo{font-size:clamp(1.05rem,1.8vw,1.12rem);font-weight:800;letter-spacing:-.02em;white-space:nowrap;color:var(--c-text)!important;text-decoration:none;cursor:pointer}
.nav-logo:hover{color:var(--c-text)!important;opacity:.92}

.nav-links{display:flex;align-items:center;gap:clamp(11px,1.85vw,24px)}
.nav-links a{color:var(--c-text-2);font-size:clamp(.82rem,.95vw + .62rem,.9rem);font-weight:500;transition:color .2s;white-space:nowrap}
.nav-links a:hover{color:var(--c-text)}
.nav-links a.active{color:var(--c-accent);position:relative}
.nav-links a.active::after{content:'';position:absolute;bottom:-4px;left:0;right:0;height:2px;background:var(--c-accent);border-radius:1px}

.lang-switch{display:inline-flex;align-items:center;gap:2px;margin-right:clamp(2px,.45vw,8px);padding:3px;border-radius:99px;background:rgba(148,163,184,.08);border:1px solid var(--c-border)}
@media (min-width:769px){.navbar .nav-toolbar > .lang-switch{margin-left:clamp(6px,.75vw,12px)}}
.lang-switch__btn{font:inherit;font-size:.72rem;font-weight:700;color:var(--c-text-2);padding:6px 11px;border:none;border-radius:99px;background:transparent;cursor:pointer;line-height:1}
.lang-switch__btn:hover{color:var(--c-text)}
.lang-switch__btn.is-active{color:#fff;background:var(--c-accent-g);box-shadow:0 2px 12px rgba(139,92,246,.28)}

.nav-mobile-btn{
  display:none;align-items:center;justify-content:center;
  min-width:44px;min-height:44px;margin-right:-8px;padding:10px;border-radius:12px;
  background:rgba(148,163,184,.09);border:1px solid var(--c-border);color:var(--c-text);
  cursor:pointer;-webkit-tap-highlight-color:transparent;transition:background .18s,border-color .18s;
}
.nav-mobile-btn:hover{background:rgba(139,92,246,.14);border-color:rgba(139,92,246,.35)}
.nav-mobile-btn__bars{display:flex;flex-direction:column;gap:5px;width:20px;height:14px}
.nav-mobile-btn__bars span{display:block;height:2px;width:100%;border-radius:1px;background:currentColor}

.nav-mobile-overlay{
  position:fixed;top:calc(var(--nav-h) + env(safe-area-inset-top,0px));left:0;right:0;bottom:0;z-index:998;
  background:rgba(2,6,23,.72);backdrop-filter:blur(5px);-webkit-backdrop-filter:blur(5px);
  opacity:0;visibility:hidden;transition:opacity .28s ease,visibility .28s ease;
}
.nav-mobile-overlay:not(.is-visible){pointer-events:none}
.nav-mobile-overlay.is-visible{opacity:1;visibility:visible}

.nav-mobile-menu{
  position:fixed;
  left:max(0px,env(safe-area-inset-left));
  right:max(0px,env(safe-area-inset-right));
  top:calc(var(--nav-h) + env(safe-area-inset-top,0px));
  z-index:1001;max-height:0;opacity:0;overflow:hidden;visibility:hidden;pointer-events:none;
  transition:max-height .38s cubic-bezier(.4,.1,.2,1),opacity .24s ease,visibility 0s .38s;
  background:rgba(13,17,31,.94);
  backdrop-filter:blur(22px);-webkit-backdrop-filter:blur(22px);
  border-bottom:1px solid rgba(148,163,184,.08);
  box-shadow:0 18px 48px rgba(0,0,0,.58);
}
.nav-mobile-menu.open{
  max-height:min(calc(100dvh - var(--nav-h) - env(safe-area-inset-top,0px)),540px);
  opacity:1;visibility:visible;pointer-events:auto;transition-delay:0s;
  overflow:auto;-webkit-overflow-scrolling:touch;
  padding-bottom:max(14px,env(safe-area-inset-bottom));
}
.nav-mobile-inner{padding:12px clamp(14px,4.2vw,28px);width:100%;max-width:var(--max-w);margin:0 auto;display:flex;flex-direction:column;gap:8px}
.nav-mobile-menu a{
  display:flex;align-items:center;justify-content:space-between;gap:12px;margin:0 12px;padding:13px 16px;border-radius:12px;
  color:var(--c-text);font-size:.93rem;font-weight:600;line-height:1.35;text-decoration:none;
  background:rgba(148,163,184,.06);border:1px solid transparent;transition:background .18s,border-color .18s,color .18s;
}
.nav-mobile-menu a::after{content:'';width:8px;height:8px;margin-left:auto;border-radius:2px;border:1px solid var(--c-text-3);border-left:none;border-bottom:none;opacity:.42;flex-shrink:0;transform:rotate(45deg)}
.nav-mobile-menu a:hover,.nav-mobile-menu a:active{border-color:rgba(139,92,246,.42);background:rgba(139,92,246,.13);color:#fff}
.nav-mobile-menu a.active{border-color:rgba(139,92,246,.5);background:rgba(139,92,246,.16);color:var(--c-accent)}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 32px;border-radius:99px;font-size:1rem;font-weight:600;cursor:pointer;border:none;transition:all .3s}
.btn-primary{background:var(--c-accent-g);color:#fff;box-shadow:0 4px 24px rgba(139,92,246,.35)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 8px 28px rgba(139,92,246,.4)}
.btn-outline{background:transparent;color:var(--c-text);border:1.5px solid var(--c-border)}
.btn-outline:hover{border-color:var(--c-accent);color:var(--c-accent)}
.btn-white{background:#fff;color:#6d28d9;box-shadow:0 6px 24px rgba(0,0,0,.25)}
.btn-white:hover{transform:scale(1.04)}
.btn-lg{padding:17px 40px;font-size:1.08rem}

/* ============ 通用容器 ============ */
.card{
  background:var(--c-surface-2);border:1px solid var(--c-border);
  border-radius:var(--radius-lg);padding:clamp(24px,4vw,40px);
  transition:transform .25s,box-shadow .25s;
}
.card:hover{transform:translateY(-2px);box-shadow:0 10px 36px rgba(0,0,0,.22)}
.card h3{margin-bottom:12px}
.card p{color:var(--c-text-2);font-size:.95rem}

.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.divider{height:1px;background:var(--c-border);margin:32px 0}

.stats-row{display:grid;gap:16px}
.stats-row.cols-2{grid-template-columns:repeat(2,1fr)}
.stats-row.cols-3{grid-template-columns:repeat(3,1fr)}
.stats-row.cols-4{grid-template-columns:repeat(4,1fr)}
.stat-card{background:var(--c-surface-2);border:1px solid var(--c-border);border-radius:var(--radius);padding:clamp(16px,3vw,28px);text-align:center}
.stat-val{font-size:clamp(1.6rem,3.5vw,2.4rem);font-weight:800;line-height:1.2}
.stat-val.accent{color:var(--c-accent)}
.stat-val.success{color:var(--c-success)}
.stat-label{font-size:.85rem;color:var(--c-text-2);margin-top:6px;line-height:1.5}
.stat-note{display:block;margin-top:6px;font-size:.72rem;color:var(--c-text-3);line-height:1.4}

/* 两张案例卡的指标行底部对齐，不受简介行数影响 */
#cases{scroll-margin-top:92px}
#cases .grid-2 > .card{display:flex;flex-direction:column}
#cases .grid-2 > .card > .stats-row{margin-top:auto}

table{width:100%;border-collapse:collapse;font-size:.9rem}
table th{text-align:left;padding:14px 16px;background:var(--c-surface-2);color:var(--c-text-2);font-weight:600;border-bottom:2px solid var(--c-border);font-size:.8rem;letter-spacing:.05em}
table td{padding:14px 16px;border-bottom:1px solid var(--c-border)}
table tr:hover td{background:rgba(139,92,246,.04)}
table td:first-child{font-weight:600;color:var(--c-text)}
#channels-compare table th,#channels-compare table td{padding:13px 16px;vertical-align:top}
#channels-compare table td{font-size:.86rem;line-height:1.45}
#channels-compare{scroll-margin-top:92px}
.channels-compare-wrap{width:100%;margin-inline:auto}

/* ============ HERO ============ */
#hero{
  padding-top:clamp(52px,6.5vw,88px);
  padding-bottom:clamp(64px,7.5vw,108px);
  border-bottom:1px solid rgba(148,163,184,.1);
  scroll-margin-top:calc(var(--nav-h) + env(safe-area-inset-top,0px) + 12px);
}
#hero .wrap.reveal,#hero .wrap.reveal.visible{opacity:1;transform:none;transition:none}
#hero .hero-layout{display:flex;flex-direction:column;align-items:stretch;width:100%;max-width:min(1080px,100%);margin:0 auto;gap:clamp(24px,3vw,32px)}
#hero .hero-copy{width:100%;min-width:0;text-align:left;container-type:inline-size}
#hero .hero-copy > h1{
  margin:0 0 clamp(18px,2.4vw,26px);
  text-align:left;line-height:1.14;
  font-size:clamp(1.9rem,4.6vw,3.1rem);
  letter-spacing:-.03em;font-weight:800;
}
#hero .hero-lead{
  margin:0 0 clamp(20px,2.6vw,28px);
  font-size:clamp(.9rem,.9vw + .78rem,1.04rem);
  line-height:1.62;color:var(--c-text-2);text-align:left;
  max-width:min(38em,100%);
}
#hero .hero-cta-row{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-start;max-width:min(540px,100%)}
#hero .hero-cta-row .btn{flex:1 1 auto;min-width:min(200px,100%);padding-inline:24px}
#hero .hero-visual{width:100%;max-width:min(560px,100%);margin-inline:auto}
#hero .hero-stats{width:100%;max-width:min(960px,100%);margin:clamp(36px,4.5vw,52px) auto 0;gap:clamp(16px,2.2vw,24px)}
#hero .stat-label--mob{display:none}

@media(min-width:901px){
  #hero .hero-layout{
    display:grid;grid-template-columns:minmax(0,1.08fr) minmax(280px,.92fr);
    gap:clamp(28px,4vw,52px);align-items:center;max-width:min(1120px,100%);
  }
  #hero .hero-visual{max-width:none;margin-inline:0}
}

/* Hero 视觉：搜索场景 → 广告首位 → 转化路径 */
.serp-mock{
  background:linear-gradient(168deg,rgba(26,34,54,.92),rgba(13,17,31,.88));
  border:1px solid rgba(148,163,184,.16);
  border-radius:var(--radius-lg);
  padding:clamp(14px,2vw,18px);
  box-shadow:0 20px 56px rgba(0,0,0,.34),inset 0 1px 0 rgba(255,255,255,.05);
}
.serp-mock__chrome{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  margin-bottom:12px;padding-bottom:10px;border-bottom:1px solid rgba(148,163,184,.1);
}
.serp-mock__dots{display:inline-flex;align-items:center;gap:5px}
.serp-mock__dots i{display:block;width:8px;height:8px;border-radius:50%;background:rgba(148,163,184,.28)}
.serp-mock__dots i:first-child{background:rgba(248,113,113,.55)}
.serp-mock__dots i:nth-child(2){background:rgba(251,191,36,.5)}
.serp-mock__dots i:nth-child(3){background:rgba(52,211,153,.45)}
.serp-mock__platform{
  display:inline-flex;align-items:center;gap:6px;
  font-size:.68rem;font-weight:600;color:var(--c-text-3);letter-spacing:.04em;text-transform:uppercase;
}
.serp-mock__platform-logo{display:block;opacity:.85}
.serp-mock__scene{
  margin:0 0 12px;font-size:.72rem;line-height:1.45;color:var(--c-text-2);font-weight:500;
}
.serp-bar{
  display:flex;align-items:center;gap:10px;
  padding:10px 14px;border-radius:99px;
  background:rgba(10,14,26,.72);border:1px solid rgba(148,163,184,.16);
}
.serp-bar__icon{flex-shrink:0;width:16px;height:16px;color:var(--c-text-3)}
.serp-bar__q{font-size:.82rem;color:var(--c-text);font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.serp-bar__caret{width:1.5px;height:14px;background:var(--c-accent);flex-shrink:0;animation:serp-caret 1.15s steps(2,start) infinite}
@keyframes serp-caret{0%,100%{opacity:1}50%{opacity:0}}

.serp-result{
  margin-top:12px;padding:12px 14px 12px 16px;border-radius:var(--radius);
  background:rgba(10,14,26,.55);border:1px solid rgba(148,163,184,.12);
  position:relative;
}
.serp-result--ad{
  border-color:rgba(139,92,246,.35);
  background:linear-gradient(135deg,rgba(139,92,246,.1),rgba(10,14,26,.62));
  box-shadow:0 0 0 1px rgba(139,92,246,.12),inset 3px 0 0 var(--c-accent);
}
.serp-result--organic{
  margin-top:8px;padding:10px 14px;opacity:.62;
  background:rgba(10,14,26,.28);border-style:dashed;
}
.serp-result__badge{
  display:inline-block;margin-bottom:8px;padding:2px 8px;border-radius:5px;
  font-size:.62rem;font-weight:800;letter-spacing:.06em;
  background:rgba(139,92,246,.16);color:var(--c-accent);
}
.serp-result__url{font-size:.7rem;color:var(--c-text-3);margin-bottom:4px;letter-spacing:.01em}
.serp-result__title{font-size:.92rem;font-weight:600;line-height:1.35;color:#8ab4f8;margin-bottom:5px}
.serp-result__title--organic{font-size:.8rem;color:var(--c-text-3);margin-bottom:0;font-weight:500}
.serp-result--organic .serp-result__url{font-size:.66rem;margin-bottom:3px}
.serp-result__desc{font-size:.74rem;line-height:1.5;color:var(--c-text-2)}

.serp-flow{
  display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:6px 8px;
  margin-top:14px;padding-top:12px;border-top:1px solid rgba(148,163,184,.1);
}
.serp-flow__step{
  padding:5px 10px;border-radius:99px;font-size:.64rem;font-weight:600;color:var(--c-text-3);
  background:rgba(10,14,26,.55);border:1px solid rgba(148,163,184,.12);line-height:1.2;
}
.serp-flow__step--accent{
  color:var(--c-accent);border-color:rgba(139,92,246,.35);background:rgba(139,92,246,.12);
}
.serp-flow__arrow{font-size:.72rem;color:var(--c-text-3);line-height:1;font-weight:600}

/* ============ 三卡对比（我们解决什么） ============ */
.trifecta-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;width:100%}
.trifecta-card{background:var(--c-surface-2);border:1px solid var(--c-border);border-radius:var(--radius-lg);padding:clamp(26px,4vw,38px);position:relative}
.trifecta-card.highlight{border-color:var(--c-accent);background:linear-gradient(135deg,rgba(139,92,246,.08),rgba(217,70,239,.05))}
.trifecta-card h3{margin:0 0 6px;font-size:1.06rem;line-height:1.3}
.trifecta-kicker{font-size:.8rem;color:var(--c-text-3);margin-bottom:8px}
.trifecta-card.highlight .trifecta-kicker{color:var(--c-accent)}
.trifecta-sub{color:var(--c-accent);font-weight:600;margin-bottom:12px;font-size:.86rem}
.trifecta-body{color:var(--c-text-2);font-size:.87rem;line-height:1.55;margin:0}

/* ============ 客户画像卡 ============ */
.fit-customers-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(12px,1.6vw,16px);margin-bottom:clamp(14px,2vw,18px)}
#fit-customers{scroll-margin-top:92px}
.fit-card{
  background:var(--c-surface-2);border:1px solid var(--c-border);border-radius:var(--radius-lg);
  padding:clamp(20px,2.4vw,28px);text-align:left;display:flex;flex-direction:column;
}
.fit-card-head{display:flex;align-items:center;gap:8px;margin-bottom:10px;flex-wrap:wrap}
.fit-card-num{width:26px;height:26px;border-radius:50%;background:var(--c-accent-g);color:#fff;font-size:.76rem;font-weight:800;line-height:1;display:inline-flex;align-items:center;justify-content:center;flex-shrink:0}
.fit-card-conv{display:inline-block;padding:2px 8px;border-radius:99px;font-size:.68rem;font-weight:700;background:rgba(139,92,246,.14);color:var(--c-accent)}
.fit-card-conv--signup{background:rgba(16,185,129,.14);color:var(--c-success)}
.fit-card-conv--lead{background:rgba(245,158,11,.14);color:var(--c-warn)}
.fit-card-title{margin:0 0 10px;font-size:clamp(.95rem,1.2vw,1.04rem);font-weight:700;line-height:1.35;color:var(--c-text)}
.fit-card-body{margin:0 0 14px;font-size:clamp(.82rem,.95vw,.87rem);line-height:1.6;color:var(--c-text-2);flex:1 1 auto}
.fit-card-advice{
  margin:0;padding:9px 12px;border-radius:10px;
  background:rgba(16,185,129,.08);border:1px solid rgba(16,185,129,.2);
  font-size:.76rem;line-height:1.45;color:var(--c-text-2);
}
.fit-card-advice strong{color:var(--c-success);font-weight:700}

/* ============ 平台墙 ============ */
.platform-grid{display:flex;flex-wrap:wrap;justify-content:center;gap:12px}
.platform-chip{
  flex:0 1 calc((100% - 72px) / 7);min-width:132px;
  background:var(--c-surface-2);border:1px solid var(--c-border);border-radius:var(--radius);
  padding:16px 12px 18px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;
  font-weight:600;font-size:.88rem;transition:all .3s;text-align:center;
}
.platform-chip:hover{border-color:var(--c-accent);background:rgba(139,92,246,.08)}
.platform-chip-logo{width:32px;height:32px;object-fit:contain;display:block;flex-shrink:0}
.platform-chip-logo--adapt{filter:brightness(0) invert(1);opacity:.95}

/* ============ 全链路能力四宫格 ============ */
.cap-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(14px,2vw,20px)}
.cap-card{
  background:var(--c-surface-2);border:1px solid var(--c-border);border-radius:var(--radius-lg);
  padding:clamp(20px,2.6vw,28px);position:relative;overflow:hidden;
  transition:border-color .22s ease,box-shadow .22s ease;
}
.cap-card::before{
  content:'';position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:999px;
  background:linear-gradient(180deg,#34d399,var(--c-accent));opacity:0;transition:opacity .22s ease;
}
.cap-card:hover{border-color:rgba(139,92,246,.4);box-shadow:0 14px 40px rgba(0,0,0,.26)}
.cap-card:hover::before{opacity:1}
.cap-card--lead{border-color:rgba(16,185,129,.34);background:linear-gradient(165deg,rgba(16,185,129,.08),rgba(17,24,39,.5))}
.cap-card--lead::before{opacity:.55;background:linear-gradient(180deg,#10b981,#059669)}
.cap-kicker{display:block;font-size:.68rem;font-weight:700;letter-spacing:.14em;color:var(--c-text-3);margin-bottom:10px}
.cap-head{display:flex;align-items:flex-start;gap:12px;margin-bottom:12px}
.cap-icon{
  flex-shrink:0;width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(139,92,246,.14);border:1px solid rgba(139,92,246,.32);color:var(--c-accent);
}
.cap-card--lead .cap-icon{background:rgba(16,185,129,.14);border-color:rgba(45,212,191,.34);color:var(--c-success)}
.cap-icon svg{display:block;width:22px;height:22px}
.cap-head h3{margin:0;font-size:clamp(1rem,1.5vw,1.12rem);line-height:1.32;font-weight:700;padding-top:4px}
.cap-body{margin:0;font-size:.88rem;line-height:1.62;color:var(--c-text-2)}

/* ============ 定价 ============ */
#pricing .pkg-tiers-grid{display:grid;grid-template-columns:1fr;gap:clamp(14px,2vw,18px);align-items:stretch;max-width:min(1060px,100%);margin-inline:auto}
@media(min-width:900px){#pricing .pkg-tiers-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
#pricing .pkg-card{
  background:var(--c-surface-2);border:1px solid var(--c-border);border-radius:var(--radius-lg);
  padding:clamp(20px,2.6vw,28px);position:relative;overflow:hidden;
  display:flex;flex-direction:column;height:100%;
}
#pricing .pkg-card.featured{border-color:var(--c-accent);box-shadow:0 0 40px rgba(139,92,246,.15)}
#pricing .pkg-head{margin:0 0 clamp(14px,2.2vw,18px)}
#pricing .pkg-tier{font-size:.78rem;line-height:1.3;margin-bottom:2px;color:var(--c-text-3)}
#pricing .pkg-card.featured .pkg-tier{color:var(--c-accent);font-weight:600}
#pricing .pkg-head h3{font-size:clamp(1.05rem,1.7vw,1.2rem);margin:0 0 4px;line-height:1.25}
#pricing .pkg-price{font-size:clamp(1.5rem,2.8vw,2rem);font-weight:800;margin:6px 0 0;line-height:1.15;letter-spacing:-.02em}
#pricing .pkg-price-unit{font-size:.46em;font-weight:700;color:var(--c-text-2);margin-left:.16em;letter-spacing:0}
#pricing .pkg-block{margin-top:10px}
#pricing .pkg-block--pos{margin-top:0}
#pricing .pkg-block-title{font-size:.68rem;font-weight:700;color:var(--c-accent);letter-spacing:.05em;margin:0 0 5px;text-transform:uppercase}
#pricing .pkg-block-text{margin:0;font-size:.82rem;color:var(--c-text-2);line-height:1.5}
#pricing .pkg-list{list-style:none;margin:4px 0 0;flex:1 1 auto}
#pricing .pkg-list li{padding:3px 0;color:var(--c-text-2);font-size:.82rem;line-height:1.45;display:flex;align-items:flex-start;gap:7px}
#pricing .pkg-list li::before{content:'✓';color:var(--c-success);font-weight:700;flex-shrink:0;margin-top:1px;font-size:.78rem}
#pricing .pkg-list li.is-bonus::before{content:'+';color:var(--c-accent)}
#pricing .pkg-card-cta{margin-top:auto;padding-top:clamp(14px,2vw,18px)}
#pricing .pkg-card-cta .btn{width:100%;padding:11px 18px;font-size:.88rem}

.price-common{
  margin:clamp(16px,2.2vw,22px) auto 0;max-width:min(1060px,100%);
  display:flex;align-items:center;flex-wrap:wrap;gap:10px clamp(14px,2vw,22px);
  padding:clamp(14px,1.8vw,18px) clamp(16px,2.2vw,24px);
  border:1px solid rgba(16,185,129,.24);border-radius:var(--radius-lg);
  background:linear-gradient(135deg,rgba(16,185,129,.07),rgba(17,24,39,.34));
}
.price-common__label{
  margin:0;flex:0 0 auto;font-size:.72rem;font-weight:700;letter-spacing:.1em;
  color:var(--c-success);
}
.price-common__list{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px clamp(14px,2vw,20px)}
.price-common__list li{
  position:relative;padding-left:19px;
  font-size:clamp(.8rem,.92vw,.86rem);line-height:1.5;color:var(--c-text-2);
}
.price-common__list li::before{
  content:'✓';position:absolute;left:0;top:0;
  color:var(--c-success);font-weight:700;font-size:.8rem;line-height:1.5;
}

.price-fee-note{
  margin:clamp(14px,1.8vw,18px) auto 0;max-width:min(1060px,100%);
  font-size:clamp(.79rem,.9vw,.84rem);line-height:1.6;color:var(--c-text-3);text-align:center;
}
.price-fee-note strong{color:var(--c-text-2);font-weight:600}

/* ============ 合作流程 ============ */
.flow-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(14px,2vw,20px)}
.step-card{
  background:rgba(26,34,54,.5);border:1px solid var(--c-border);border-radius:var(--radius-lg);
  padding:clamp(20px,2.6vw,28px);text-align:left;display:flex;flex-direction:column;
}
.step-num{
  width:40px;height:40px;border-radius:50%;color:#fff;font-weight:800;font-size:.98rem;
  display:inline-flex;align-items:center;justify-content:center;margin-bottom:14px;flex-shrink:0;
  background:radial-gradient(circle at 32% 22%,rgba(255,255,255,.24),transparent 52%),linear-gradient(150deg,#059669 0%,#10b981 52%,#34d399 100%);
  box-shadow:0 0 0 1px rgba(255,255,255,.14) inset,0 8px 26px rgba(16,185,129,.34);
}
.step-card h3{font-size:1rem;margin-bottom:8px;line-height:1.35}
.step-card p{font-size:.85rem;color:var(--c-text-2);line-height:1.58;margin:0}
.step-when{display:inline-block;margin-bottom:10px;padding:2px 9px;border-radius:99px;font-size:.68rem;font-weight:700;background:rgba(139,92,246,.14);color:var(--c-accent)}
.flow-foot{text-align:center;color:var(--c-text-2);margin-top:clamp(24px,3vw,32px);font-size:.88rem;line-height:1.6}

/* ============ 官方合作伙伴徽章墙 ============ */
.partner-wall{
  list-style:none;margin:0 0 clamp(14px,2vw,18px);padding:0;
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:clamp(10px,1.4vw,14px);
}
.partner-badge{
  display:flex;flex-direction:column;align-items:center;justify-content:flex-start;gap:7px;
  padding:clamp(14px,1.9vw,20px) 10px;
  background:var(--c-surface-2);border:1px solid var(--c-border);border-radius:var(--radius);
  text-align:center;transition:border-color .22s ease,background .22s ease;
}
.partner-badge:hover{border-color:rgba(139,92,246,.4);background:rgba(139,92,246,.06)}
.partner-badge--lead{border-color:rgba(139,92,246,.42);background:linear-gradient(165deg,rgba(139,92,246,.1),rgba(17,24,39,.4))}
.partner-badge__logo{width:34px;height:34px;object-fit:contain;display:block;flex-shrink:0}
.partner-badge__logo--adapt{filter:brightness(0) invert(1);opacity:.95}
.partner-badge__name{font-size:clamp(.84rem,.95vw,.9rem);font-weight:700;color:var(--c-text);line-height:1.25}
.partner-badge__tier{font-size:.7rem;font-weight:600;color:var(--c-text-3);line-height:1.3;letter-spacing:.01em}
.partner-badge--lead .partner-badge__tier{color:var(--c-accent)}
.partner-wall-foot{
  margin:0 0 clamp(26px,3.4vw,36px);
  font-size:clamp(.8rem,.92vw,.86rem);line-height:1.6;color:var(--c-text-3);text-align:center;
  max-width:min(52em,100%);margin-inline:auto;
}
.partner-wall-foot strong{color:var(--c-text-2);font-weight:600}
#why-us .section-lead{
  margin:10px auto 0;max-width:min(40em,100%);
  font-size:clamp(.85rem,.95vw,.92rem);line-height:1.6;color:var(--c-text-2);
}

/* ============ 小瓦 AI 团队 ============ */
#team .section-intro{margin-bottom:clamp(18px,2.4vw,24px)}
.team-intro{
  max-width:min(58em,100%);margin:0 auto clamp(26px,3.4vw,36px);
  text-align:center;color:var(--c-text-2);
  font-size:clamp(.85rem,1.05vw,.94rem);line-height:1.7;text-wrap:pretty;
}
.team-dimensions{display:grid;gap:clamp(14px,1.8vw,18px);grid-template-columns:1fr;align-items:stretch}
@media (min-width:768px){.team-dimensions{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1180px){.team-dimensions{grid-template-columns:repeat(5,minmax(0,1fr));gap:clamp(12px,1.4vw,16px)}}
.team-dimension{
  margin:0;padding:clamp(20px,2.4vw,26px) clamp(16px,1.9vw,20px);height:100%;
  display:flex;flex-direction:column;text-align:left;
  background:var(--c-surface-2);border:1px solid var(--c-border);border-radius:var(--radius);
}
.team-dimension-label{
  display:block;margin:0 0 10px;
  font-size:.74rem;font-weight:500;color:var(--c-text-3);line-height:1.3;
}
.team-dimension h3{
  margin:0 0 12px;font-size:clamp(1rem,1.3vw,1.12rem);font-weight:700;
  line-height:1.32;color:var(--c-text);letter-spacing:-.02em;
}
.team-dimension-proof{
  margin:0 0 14px;padding-bottom:14px;border-bottom:1px solid rgba(148,163,184,.16);
  font-size:clamp(.79rem,.92vw,.86rem);font-weight:600;line-height:1.5;color:var(--c-success);
}
.team-dimension-proof br{display:block;margin-top:6px}
.team-dimension-body{
  margin:0;flex:1 1 auto;
  font-size:clamp(.79rem,.9vw,.85rem);line-height:1.65;color:var(--c-text-3);
}
@media (min-width:1180px){
  .team-dimension{padding:20px 15px}
  .team-dimension h3{font-size:.99rem;margin-bottom:10px}
  .team-dimension-proof{font-size:.79rem;margin-bottom:12px;padding-bottom:12px}
  .team-dimension-body{font-size:.77rem;line-height:1.6}
}

/* ============ FAQ ============ */
.faq-item{border-bottom:1px solid var(--c-border);overflow:hidden}
.faq-q{
  padding:20px 0;font-weight:600;cursor:pointer;display:flex;justify-content:space-between;
  align-items:flex-start;gap:16px;transition:color .2s;line-height:1.45;
}
.faq-q:hover{color:var(--c-accent)}
.faq-q-text{flex:1 1 auto;min-width:0}
.faq-q::after{content:'+';font-size:1.25rem;color:var(--c-text-3);transition:transform .3s,color .3s;flex-shrink:0;line-height:1.2;opacity:.7}
.faq-item.open .faq-q::after{transform:rotate(45deg);color:var(--c-accent)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .34s ease,padding .34s ease;color:var(--c-text-2);font-size:.92rem;line-height:1.7}
.faq-item.open .faq-a{max-height:min(520px,84vh);padding:0 0 20px}
.faq-a p{margin:0}
.faq-a p + p{margin-top:10px}
.faq-a strong{color:var(--c-text);font-weight:600}

/* ============ 底部 CTA ============ */
.cta-inner p{white-space:normal;max-width:min(46em,100%);margin-inline:auto}
.cta-bullets{
  list-style:none;margin:0 auto clamp(22px,3vw,30px);padding:0;
  display:flex;flex-wrap:wrap;justify-content:center;gap:8px 10px;
}
.cta-bullets li{
  padding:5px 14px;border-radius:99px;font-size:.78rem;font-weight:600;
  background:rgba(255,255,255,.14);color:#fff;border:1px solid rgba(255,255,255,.2);
}

/* ============ 页脚 ============ */
.site-footer{border-top:1px solid var(--c-border);background:#060912;padding:clamp(40px,6vw,64px) 0 var(--section-py);padding-bottom:max(var(--section-py),env(safe-area-inset-bottom))}
.site-footer-columns{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,180px),1fr));gap:clamp(28px,4vw,40px);margin-bottom:32px;text-align:left}
.site-footer-column h3{font-size:.8rem;text-transform:uppercase;letter-spacing:.1em;color:var(--c-text-3);margin-bottom:14px;font-weight:700}
.site-footer-column ul{list-style:none;padding:0;margin:0}
.site-footer-column li{margin:9px 0}
.site-footer-column .footer-contact-list li{margin:12px 0}
.site-footer-column a{color:var(--c-text-2);font-size:clamp(.82rem,1.05vw,.89rem);text-decoration:none;transition:color .2s}
.site-footer-column a:hover{color:var(--c-accent)}
.footer-contact-list{list-style:none;margin:0;padding:0}
.footer-contact-list .footer-contact-item,.footer-contact-list .footer-contact-text{font-size:clamp(.82rem,1.05vw,.89rem);line-height:1.35}
.footer-contact-item{display:flex;align-items:center;gap:12px;color:var(--c-text-2);text-decoration:none;transition:color .15s}
a.footer-contact-item:hover,.footer-contact-item--copy:hover{color:var(--c-accent)}
.footer-contact-item--copy{cursor:pointer;width:100%;background:transparent;border:0;padding:0;margin:0}
.footer-contact-icon-slot{flex-shrink:0;width:26px;display:flex;align-items:center;justify-content:center}
.footer-contact-icon{flex-shrink:0;width:24px;height:24px;display:block}
.footer-contact-icon--mail{color:var(--c-text-3)}
.footer-contact-text{flex:1;min-width:0}
.footer-contact-text strong{font-size:inherit;font-weight:600;color:var(--c-text)}
@media (min-width:769px){
  .site-footer-column--contact{min-width:min(100%,290px)}
  .footer-contact-list .footer-contact-text--wa{white-space:nowrap}
}
.footer-qr-block{margin-top:20px;padding-top:18px;border-top:1px solid var(--c-border)}
.footer-qr-hint{margin:0 0 12px;font-size:.78rem;font-weight:600;color:var(--c-text-3);letter-spacing:.04em}
.footer-qr-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(6px,1.25vw,9px);max-width:min(300px,92%);align-items:start}
.footer-qr-trigger{appearance:none;-webkit-appearance:none;border:0;padding:0;margin:0;background:transparent;cursor:zoom-in;border-radius:12px;display:flex;flex-direction:column;align-items:center;gap:6px;line-height:0;width:100%;text-align:center}
.footer-qr-caption{margin:0;font-size:.7rem;font-weight:700;color:var(--c-text-2);letter-spacing:.03em;line-height:1.3}
.footer-qr-frame{border-radius:10px;overflow:hidden;border:1px solid var(--c-border);background:rgba(255,255,255,.06);line-height:0;display:block;width:100%;max-width:min(92px,26vw);margin-inline:auto}
.footer-qr-frame img{width:100%;height:auto;display:block}
.site-footer-meta{text-align:center;padding-top:24px;border-top:1px solid var(--c-border);color:var(--c-text-3);font-size:.84rem;padding-bottom:max(12px,env(safe-area-inset-bottom))}

.qr-lightbox{position:fixed;inset:0;z-index:5000;display:none;align-items:center;justify-content:center;padding:max(22px,4vw);background:rgba(7,11,22,.94);-webkit-backdrop-filter:blur(11px);backdrop-filter:blur(11px)}
.qr-lightbox:not([hidden]){display:flex}
.qr-lightbox-img{display:block;margin:0 auto;max-width:min(78vmin,400px);max-height:min(68vh,400px);width:auto;height:auto;border-radius:12px;background:#fff;padding:10px;box-shadow:0 22px 64px rgba(0,0,0,.52)}
.qr-lightbox-close{position:absolute;top:clamp(14px,3vw,22px);right:clamp(14px,3vw,22px);width:46px;height:46px;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;border:1px solid var(--c-border);background:rgba(17,24,39,.94);color:var(--c-text);font-size:1.55rem;line-height:1;font-weight:300;transition:background .2s,color .2s,border-color .2s}
.qr-lightbox-close:hover{border-color:var(--c-accent);color:var(--c-accent)}

.email-copy-toast{
  position:fixed;bottom:max(24px,5vh);left:50%;transform:translate3d(-50%,calc(100% + 28px),0);
  z-index:6000;max-width:min(92vw,360px);padding:12px 18px;border-radius:12px;
  font-size:.875rem;font-weight:600;line-height:1.35;color:var(--c-text);
  background:var(--c-surface-2);border:1px solid var(--c-border);box-shadow:0 14px 44px rgba(0,0,0,.42);
  pointer-events:none;opacity:0;transition:opacity .24s ease,transform .26s ease;
}
.email-copy-toast.is-visible{opacity:1;transform:translate3d(-50%,0,0)}

.reveal{opacity:0;transform:translateY(18px);transition:opacity .55s ease,transform .55s ease}
.reveal.visible{opacity:1;transform:translateY(0)}

/* ============ 英文版微调 ============ */
body.lang-en .nav-links a{font-size:clamp(.78rem,.7vw + .6rem,.84rem)}
body.lang-en .nav-mobile-menu a{font-size:.875rem}
body.lang-en .lang-switch__btn{font-size:.685rem}
body.lang-en #hero .hero-copy > h1{font-size:clamp(1.85rem,4.2vw,2.85rem);line-height:1.16}
body.lang-en .site-footer-column a{font-size:clamp(.79rem,.95vw,.845rem)}
body.lang-en #pricing .pkg-list li{font-size:.79rem}
body.lang-en .cta-bullets li{font-size:.74rem}

/* ============ 响应式（小屏精简，对齐 xiaowa-ai 副本） ============ */
@media (max-width:560px){
  .partner-wall{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
  .partner-badge{padding:12px 8px;gap:5px}
  .partner-badge__logo{width:28px;height:28px}
  .partner-badge__name{font-size:.8rem}
  .partner-badge__tier{font-size:.65rem}
}
@media (max-width:900px){
  .flow-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .fit-customers-grid{grid-template-columns:1fr}
  .cap-grid{grid-template-columns:1fr}
}
@media (max-width:768px){
  :root{
    --nav-h:56px;
    --mob-grid-gap:10px;
    --mob-panel-pad:20px 16px;
    --mob-card-title:.92rem;
    --mob-ic:36px;
    --mob-ic-r:9px;
  }
  section{padding:var(--section-py-mob) 0}
  .nav-links{display:none}
  .nav-mobile-btn{display:inline-flex;margin-right:0}
  .navbar .wrap{padding-left:clamp(14px,4.2vw,24px);padding-right:clamp(14px,4.2vw,24px)}
  .navbar .nav-toolbar .lang-switch{display:inline-flex;flex-shrink:0;margin-right:0;padding:2px}
  .navbar .nav-toolbar .lang-switch__btn{padding:5px 9px;font-size:.7rem}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .trifecta-grid{grid-template-columns:1fr!important}
  .stats-row.cols-4{grid-template-columns:repeat(2,1fr)}
  .platform-grid{gap:8px}
  .platform-chip{padding:12px 8px 14px;font-size:.78rem;gap:8px;min-width:104px}
  .platform-chip-logo{width:26px;height:26px}
  .site-footer-columns{grid-template-columns:repeat(2,1fr);gap:clamp(20px,3vw,32px)}

  /* 板块标题区 ↔ 主体内容：小屏保持与桌面一致的标题下间距 */
  .section-intro,
  .pricing-tiers-intro{
    margin-bottom:var(--section-head-gap-mob)!important;
  }
  #how-it-works .section-intro,
  #fit-customers .section-intro,
  #data .section-intro,
  #platforms .section-intro,
  #pricing .pricing-tiers-intro,
  #startup-flow .section-intro,
  #why-us .section-intro,
  #capabilities .section-intro,
  #team .section-intro,
  #faq .section-intro{
    margin-bottom:clamp(22px,3.5vw,32px)!important;
  }
  #how-it-works .channels-compare-wrap .section-intro{
    margin-bottom:clamp(18px,2.5vw,24px)!important;
  }
  :is(.section-intro,.pricing-tiers-intro) .tag{
    margin-bottom:var(--eyebrow-gap)!important;
  }
  :is(.section-intro,.pricing-tiers-intro) h2{
    margin-bottom:0;
  }

  /* Hero：小屏隐藏引导语，保留 SERP 示例 */
  #hero{padding-bottom:clamp(48px,8vw,64px)}
  #hero .hero-layout{
    display:flex;flex-direction:column;align-items:stretch;
    gap:clamp(16px,3.5vw,22px);
  }
  #hero .hero-copy{display:contents}
  #hero .hero-copy>h1{
    order:1;text-align:center;margin:0 auto;
    max-width:min(36em,100%);
    font-size:clamp(1.75rem,6.6vw,2.3rem);
  }
  #hero .hero-lead{display:none!important}
  #hero .hero-visual{
    order:2;display:block;width:100%;max-width:min(420px,94vw);margin:0 auto;
  }
  #hero .serp-mock{padding:11px 12px}
  #hero .serp-mock__chrome{margin-bottom:9px;padding-bottom:8px}
  #hero .serp-mock__dots i{width:7px;height:7px}
  #hero .serp-mock__platform{font-size:.62rem}
  #hero .serp-mock__platform-logo{width:12px;height:12px}
  #hero .serp-mock__scene{font-size:.66rem;margin-bottom:10px}
  #hero .serp-bar{padding:8px 11px;gap:8px}
  #hero .serp-bar__icon{width:14px;height:14px}
  #hero .serp-bar__q{font-size:.74rem}
  #hero .serp-bar__caret{height:12px}
  #hero .serp-result{margin-top:9px;padding:9px 11px 9px 13px}
  #hero .serp-result--organic{margin-top:6px;padding:8px 11px}
  #hero .serp-result__badge{font-size:.58rem;margin-bottom:6px;padding:2px 6px}
  #hero .serp-result__url{font-size:.64rem;margin-bottom:3px}
  #hero .serp-result__title{font-size:.84rem;margin-bottom:4px}
  #hero .serp-result__title--organic{font-size:.72rem}
  #hero .serp-result--organic .serp-result__url{font-size:.6rem}
  #hero .serp-result__desc{font-size:.68rem;line-height:1.45}
  #hero .serp-flow{margin-top:11px;padding-top:10px;gap:5px 6px}
  #hero .serp-flow__step{font-size:.58rem;padding:4px 8px}
  #hero .serp-flow__arrow{font-size:.66rem}
  #hero .hero-cta-row{
    order:3;flex-direction:column;justify-content:stretch;
    width:100%;max-width:min(360px,100%);margin:0 auto;
  }
  #hero .hero-cta-row .btn{width:100%}
  #hero .hero-stats{
    margin-top:clamp(32px,7vw,44px)!important;
    padding-top:clamp(22px,4.5vw,28px)!important;
    border-top:1px solid rgba(148,163,184,.14)!important;
    gap:clamp(12px,2.4vw,16px);
  }
  #hero .stat-label--desk{display:none}
  #hero .stat-label--mob{display:block}

  /* 核心问题：前两卡摘要 + 第三卡完整 */
  #how-it-works .trifecta-grid{max-width:520px;margin-inline:auto;gap:var(--mob-grid-gap)}
  #how-it-works .trifecta-card:not(.highlight){
    display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 8px;
    padding:10px 14px;text-align:left;
    background:rgba(148,163,184,.06);border-color:rgba(148,163,184,.14);
  }
  #how-it-works .trifecta-card:not(.highlight) .trifecta-kicker{
    flex:0 0 100%;font-size:.74rem!important;margin-bottom:0!important;color:var(--c-text-3);
  }
  #how-it-works .trifecta-card:not(.highlight) h3{font-size:.88rem;margin:0}
  #how-it-works .trifecta-card:not(.highlight) .trifecta-sub{
    font-size:.8rem;margin:0!important;color:var(--c-text-2);font-weight:500;
  }
  #how-it-works .trifecta-card:not(.highlight) .trifecta-body{display:none}
  #how-it-works .trifecta-card.highlight{padding:var(--mob-panel-pad)}
  #how-it-works .trifecta-card.highlight .trifecta-kicker{font-size:.92rem;font-weight:600;margin-bottom:10px!important}
  #how-it-works .trifecta-card.highlight h3{font-size:1.08rem;margin-bottom:8px}
  #how-it-works .trifecta-card.highlight .trifecta-sub{
    font-size:var(--mob-card-title);font-weight:600;margin-bottom:10px!important;
  }
  #how-it-works .trifecta-card.highlight .trifecta-body{
    display:block;font-size:.82rem;line-height:1.55;color:var(--c-text-2);margin-bottom:0!important;
  }

  /* 适用场景：标题 + 建议 */
  #fit-customers .fit-lead{display:none}
  #fit-customers .fit-customers-grid{gap:10px;margin-bottom:12px}
  #fit-customers .fit-card{padding:14px 16px}
  #fit-customers .fit-card-body{display:none}
  #fit-customers .fit-card-title{margin-bottom:8px;font-size:.9rem}
  #fit-customers .fit-card-head{margin-bottom:6px}
  #fit-customers .fit-card-advice{margin-top:auto}

  /* 交付成果：隐藏导语 */
  #data .section-intro p{display:none}

  /* 价格：首推通栏 + 两档并排（三档齐全，无空角） */
  #pricing .pricing-tiers-intro h2{display:block!important}
  #pricing .pkg-tiers-grid{
    display:grid;
    grid-template-columns:repeat(2,minmax(0,1fr));
    grid-template-areas:
      "featured featured"
      "basic premium";
    gap:10px;
    max-width:min(520px,100%);
    margin-inline:auto;
    align-items:stretch;
  }
  #pricing .pkg-tiers-grid>.pkg-card:nth-child(1){grid-area:basic}
  #pricing .pkg-tiers-grid>.pkg-card.featured{grid-area:featured}
  #pricing .pkg-tiers-grid>.pkg-card:nth-child(3){grid-area:premium}
  #pricing .pkg-tiers-grid>.pkg-card{
    display:flex!important;flex-direction:column;padding:12px 10px;border-radius:calc(var(--radius) - 2px);min-height:0;
  }
  #pricing .pkg-card:hover{transform:none;box-shadow:none}
  #pricing .pkg-card.featured{
    padding:14px 12px;
    box-shadow:0 0 0 1px rgba(139,92,246,.38),0 10px 28px rgba(139,92,246,.12);
    border-color:rgba(139,92,246,.45);
    background:linear-gradient(165deg,rgba(139,92,246,.1),rgba(17,24,39,.55));
  }
  #pricing .pkg-head{margin-bottom:6px}
  #pricing .pkg-tier{font-size:.6rem;line-height:1.25;margin-bottom:3px}
  #pricing .pkg-head h3{display:none}
  #pricing .pkg-card.featured .pkg-head h3{
    display:block;font-size:.82rem;margin:0 0 4px;line-height:1.25;color:var(--c-text);
  }
  #pricing .pkg-head .pkg-price{font-size:clamp(1.05rem,4.6vw,1.38rem);margin:0 0 2px}
  #pricing .pkg-card.featured .pkg-head .pkg-price{font-size:clamp(1.18rem,5vw,1.52rem)}
  #pricing .pkg-block--pos{display:none}
  #pricing .pkg-block{margin-top:0;flex:1 1 auto}
  #pricing .pkg-block-title{font-size:.56rem;margin-bottom:3px;letter-spacing:.03em}
  #pricing .pkg-list li{font-size:.64rem;line-height:1.32;margin-bottom:2px;padding-left:9px}
  #pricing .pkg-list li:nth-child(n+3){display:none}
  #pricing .pkg-card.featured .pkg-list li:nth-child(n+3){display:flex}
  #pricing .pkg-card.featured .pkg-list li:nth-child(n+4){display:none}
  #pricing .pkg-card-cta{margin-top:auto;padding-top:8px}
  #pricing .pkg-card-cta .btn{padding:9px 6px;font-size:.7rem;min-height:38px;line-height:1.2}
  #pricing .pkg-card.featured .pkg-card-cta .btn{min-height:40px}
  #pricing .price-common,#pricing .price-fee-note{display:none}
  body.lang-en #pricing .pkg-tier{font-size:.56rem}
  body.lang-en #pricing .pkg-list li{font-size:.58rem;line-height:1.28}
  body.lang-en #pricing .pkg-card-cta .btn{font-size:.64rem;padding:8px 4px}

  /* 合作流程：单卡纵向时间轴 */
  #startup-flow .flow-grid{
    display:flex;flex-direction:column;gap:0;max-width:520px;margin-inline:auto;
    background:var(--c-surface-2);border:1px solid var(--c-border);border-radius:var(--radius);overflow:hidden;
  }
  #startup-flow .step-card{
    display:grid;grid-template-columns:32px 1fr;column-gap:12px;row-gap:2px;align-items:center;
    padding:11px 14px;background:transparent;border:none;border-radius:0;
    border-bottom:1px solid rgba(148,163,184,.12);flex-direction:unset;
  }
  #startup-flow .step-card:last-child{border-bottom:none}
  #startup-flow .step-num{
    grid-row:1/span 2;grid-column:1;width:32px;height:32px;font-size:.82rem;
    margin:0;border-radius:9px;align-self:center;
  }
  #startup-flow .step-card>div:not(.step-num){
    grid-column:2;display:flex;flex-direction:column;gap:2px;min-width:0;
  }
  #startup-flow .step-when{margin:0;font-size:.72rem;padding:0;background:transparent;color:var(--c-accent);font-weight:600}
  #startup-flow .step-card h3{margin:0;font-size:.9rem;line-height:1.32}
  #startup-flow .step-card p{display:none}
  #startup-flow .flow-foot{display:none}

  /* 平台资质：小屏保留徽章，隐藏两段说明文字 */
  #why-us .section-lead,
  #why-us .partner-wall-foot{display:none}
  #why-us .partner-wall{
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:clamp(10px,1.4vw,14px);
    max-width:none;
  }

  /* 小瓦 AI 优势：2×2 要点卡 */
  #capabilities .cap-grid{
    grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;max-width:520px;margin-inline:auto;
  }
  #capabilities .cap-kicker,#capabilities .cap-body{display:none}
  #capabilities .cap-card{padding:10px 8px;text-align:center;border-radius:calc(var(--radius-lg) - 2px)}
  #capabilities .cap-card::before{display:none}
  #capabilities .cap-card:hover{transform:none;box-shadow:none;border-color:var(--c-border)}
  #capabilities .cap-head{flex-direction:column;align-items:center;gap:6px;margin-bottom:0}
  #capabilities .cap-icon{width:var(--mob-ic);height:var(--mob-ic);border-radius:var(--mob-ic-r)}
  #capabilities .cap-icon svg{width:18px;height:18px}
  #capabilities .cap-head h3{font-size:.78rem;padding-top:0;line-height:1.32}
  body.lang-en #capabilities .cap-head h3{font-size:.72rem;line-height:1.28}

  #channels-compare .card{overflow-x:auto;-webkit-overflow-scrolling:touch}
  #channels-compare table{min-width:640px}

  #faq .faq-section-lead{display:none!important}
}
@media (max-width:640px){
  .channels-compare-wrap{display:none}
  .site-footer-column--nav-main,
  .site-footer-column--nav-info,
  .site-footer-column--nav-about{display:none}

  #team{display:none}
  #platforms{display:none}

  #hero .wrap{padding-inline:clamp(10px,2.8vw,18px)}
  #hero .hero-copy>h1{
    font-size:clamp(1.58rem,7vw,2.08rem);
    font-size:clamp(1.58rem,8.4cqi,2.08rem);
  }
  #hero .hero-cta-row .btn{padding:16px 24px;font-size:1rem;line-height:1.25;min-height:50px}
  #hero .hero-stats{
    margin-top:clamp(28px,6.5vw,40px)!important;
    padding-top:clamp(20px,4.2vw,26px)!important;
  }
  #hero .stat-card{
    padding:clamp(22px,4.5vw,30px) clamp(10px,2.2vw,14px);
    text-align:center;min-height:clamp(96px,24vw,118px);
    display:flex;flex-direction:column;align-items:center;justify-content:center;
  }
  #hero .stat-val{font-size:clamp(1.1rem,5vw,1.52rem);line-height:1.12}
  #hero .stat-label{
    margin-top:clamp(8px,1.8vw,12px);
    font-size:clamp(.66rem,2.15vw,.76rem);line-height:1.34;
  }

  #data .stats-row.cols-4{gap:8px}
  #data .stat-card{padding:9px 5px}
  #data .stat-val{font-size:clamp(1.15rem,4.8vw,1.45rem)}
  #data .stat-label{font-size:clamp(.72rem,2.1vw,.78rem)}

  .site-footer{padding-left:max(env(safe-area-inset-left),0px);padding-right:max(env(safe-area-inset-right),0px)}
  .site-footer .wrap{padding-left:clamp(16px,4.5vw,24px);padding-right:clamp(16px,4.5vw,24px)}
  .site-footer-columns{grid-template-columns:1fr;gap:0;margin-bottom:28px}
  .site-footer-column{padding:20px 0;border-bottom:1px solid rgba(148,163,184,.12)}
  .site-footer-column:last-of-type{border-bottom:none;padding-bottom:8px}
  .site-footer-column h3{font-size:.72rem;margin-bottom:12px;letter-spacing:.12em}
  .site-footer-column--contact{
    order:-1;text-align:center;
    background:linear-gradient(180deg,rgba(139,92,246,.07),transparent 65%);
    margin:0 calc(-1 * clamp(16px,4.5vw,24px));
    padding:22px clamp(16px,4.5vw,24px) 24px;
    border-bottom:1px solid rgba(148,163,184,.15);border-radius:0;
    display:flex;flex-direction:column;align-items:center;
  }
  .site-footer-column--contact .footer-qr-hint,
  .site-footer-column--contact .footer-qr-grid{margin-inline:auto}
  .site-footer-column--contact .footer-contact-list{
    width:max-content;max-width:100%;margin-inline:auto;
  }
  .site-footer-column--contact .footer-contact-list li{text-align:left}
  .site-footer-column--contact .footer-contact-item{justify-content:flex-start;text-align:left}
  .footer-qr-block{margin-top:18px;padding-top:18px}
  .footer-qr-grid{max-width:100%;gap:clamp(6px,1.5vw,10px)}

  #pricing .pkg-tiers-grid{gap:6px}
  #pricing .pkg-tiers-grid>.pkg-card{padding:10px 9px}
  #pricing .pkg-head .pkg-price{font-size:clamp(.98rem,4.2vw,1.28rem)}
  #pricing .pkg-list li{font-size:.6rem}
  #pricing .pkg-card-cta .btn{font-size:.66rem;min-height:36px;padding:8px 5px}

  #startup-flow .step-card{padding:10px 12px;column-gap:10px}
  #startup-flow .step-num{width:28px;height:28px;font-size:.75rem}
  #startup-flow .step-card h3{font-size:.86rem}
}
@media (max-width:520px){
  #hero .hero-visual{max-width:min(380px,92vw)}
  #hero .serp-mock{padding:10px 11px}
  #hero .serp-bar__q{font-size:.7rem}
  #hero .serp-result__title{font-size:.8rem}
  #hero .serp-result__desc{font-size:.64rem}
  #hero .serp-flow__step{font-size:.56rem;padding:3px 7px}
  .stats-row{gap:10px}
  .stat-card{padding:14px 10px}
  .stat-val{font-size:clamp(1.3rem,6vw,1.7rem)}
  .stat-label{font-size:.74rem}
}
@media (max-width:480px){
  :root{
    --mob-grid-gap:8px;
    --mob-panel-pad:18px 14px;
    --mob-card-title:.86rem;
    --mob-ic:32px;
    --mob-ic-r:8px;
    --section-head-gap-mob:clamp(22px,3.2vw,28px);
  }
  #how-it-works .wrap>.section-intro{margin-bottom:clamp(20px,3.2vw,28px)!important}
  #data .wrap>.section-intro{margin-bottom:clamp(22px,3.2vw,30px)!important}
  #fit-customers .wrap>.section-intro{margin-bottom:clamp(22px,3.2vw,30px)!important}
  #pricing .pricing-tiers-intro{margin-bottom:clamp(20px,3.2vw,28px)!important}
  #startup-flow .wrap>.section-intro{margin-bottom:clamp(20px,3.2vw,28px)!important}
  #why-us .wrap>.section-intro{margin-bottom:clamp(20px,3.2vw,28px)!important}
  #capabilities .wrap>.section-intro{margin-bottom:clamp(20px,3.2vw,28px)!important}
  #faq .wrap>.section-intro{margin-bottom:clamp(20px,3.2vw,28px)!important}
  #hero .hero-copy>h1{letter-spacing:-0.012em}
  #how-it-works .trifecta-card.highlight h3{font-size:1rem}
  #hero .hero-cta-row .btn{padding:15px 20px;min-height:48px}
  #pricing .pkg-tiers-grid{gap:6px}
  #pricing .pkg-tiers-grid>.pkg-card{padding:10px 8px}
  #pricing .pkg-head .pkg-price{font-size:clamp(.96rem,4vw,1.22rem)}
  #pricing .pkg-list li{font-size:.58rem}
  #pricing .pkg-card-cta .btn{font-size:.64rem;min-height:34px;padding:7px 4px}
}

@media (prefers-reduced-motion: reduce){
  .reveal,.reveal.visible{opacity:1!important;transform:none!important;transition:none!important}
  .card{transition:none!important}
  .card:hover{transform:none!important}
  .btn-primary:hover,.btn-outline:hover{transform:none!important}
  .serp-bar__caret{animation:none}
}

:where(a,button,.btn,.faq-q,.lang-switch__btn,.nav-mobile-btn,.qr-lightbox-close,.footer-qr-trigger):focus-visible{
  outline:2px solid var(--c-accent);outline-offset:3px;
}