/* ============ 设计令牌 ============ */
:root{
  --green-accent:#00754A;
  --green-brand:#006241;
  --green-house:#1E3932;
  --green-uplift:#2b5148;
  --green-light:#d4e9e2;
  --gold:#cba258;
  --gold-lightest:#faf6ee;
  --cream:#f2f0eb;
  --ceramic:#edebe9;
  --ink:rgba(0,0,0,.87);
  --ink-soft:rgba(0,0,0,.58);
  --ink-faint:rgba(0,0,0,.40);
  --white-soft:rgba(255,255,255,.70);
  --white-faint:rgba(255,255,255,.45);
  --shadow-card:0 0 .5px rgba(0,0,0,.14),0 1px 1px rgba(0,0,0,.24);
  --shadow-lift:0 0 .5px rgba(0,0,0,.12),0 6px 12px rgba(0,0,0,.10),0 12px 24px rgba(0,0,0,.06);
  --shadow-nav:0 1px 3px rgba(0,0,0,.10),0 2px 2px rgba(0,0,0,.06),0 0 2px rgba(0,0,0,.07);
  --radius-card:12px;
  --radius-pill:50px;
  --gutter:16px;
  --font:"Inter","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  background:var(--cream);
  color:var(--ink);
  font-size:16px;
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
}
a{text-decoration:none;color:inherit}
ul{list-style:none}
img,svg{display:block}
.wrap{max-width:1200px;margin:0 auto;padding:0 var(--gutter)}
@media(min-width:768px){:root{--gutter:24px}}
@media(min-width:1024px){:root{--gutter:40px}}

/* ============ 按钮体系（全胶囊 50px） ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-pill);
  padding:9px 22px;
  font-size:15px;font-weight:600;letter-spacing:0;
  cursor:pointer;border:1px solid transparent;
  transition:all .2s ease;
  white-space:nowrap;
}
.btn:active{transform:scale(.95)}
.btn-fill{background:var(--green-accent);color:#fff;border-color:var(--green-accent)}
.btn-fill:hover{background:#006241;border-color:#006241}
.btn-outline{background:transparent;color:var(--green-accent);border-color:var(--green-accent)}
.btn-outline:hover{background:rgba(0,117,74,.07)}
.btn-dark-outline{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-dark-outline:hover{background:rgba(0,0,0,.05)}
.btn-white{background:#fff;color:var(--green-accent);border-color:#fff}
.btn-white:hover{background:var(--cream)}
.btn-ghost-dark{background:transparent;color:#fff;border-color:#fff}
.btn-ghost-dark:hover{background:rgba(255,255,255,.12)}
.btn-gold{background:transparent;color:#8a6d2f;border-color:var(--gold)}
.btn-gold:hover{background:rgba(203,162,88,.12)}
.btn-sm{padding:6px 16px;font-size:14px}

/* ============ 顶部会员条 ============ */
.joinstrip{
  background:var(--green-house);color:#fff;
  font-size:13.5px;
}
.joinstrip .wrap{
  display:flex;align-items:center;justify-content:center;gap:10px;
  padding-top:9px;padding-bottom:9px;
}
.joinstrip .gold{color:var(--gold);font-weight:600}
.joinstrip a{
  color:#fff;font-weight:600;border-bottom:1px solid rgba(255,255,255,.5);
  padding-bottom:1px;transition:border-color .2s ease;
}
.joinstrip a:hover{border-color:#fff}

/* ============ 全局导航 ============ */
.nav{
  position:sticky;top:0;z-index:50;
  background:#fff;
  box-shadow:var(--shadow-nav);
}
.nav .wrap{
  display:flex;align-items:center;gap:28px;
  height:72px;
}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;color:var(--green-brand);flex-shrink:0}
.brand small{font-size:11px;font-weight:500;color:var(--ink-faint);letter-spacing:.08em;display:block;line-height:1.2}
.nav-links{display:flex;gap:26px;margin-left:8px;flex:1}
.nav-links a{
  font-size:15px;font-weight:500;color:var(--ink);
  padding:6px 0;position:relative;transition:color .2s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;
  background:var(--green-accent);transition:right .25s ease;
}
.nav-links a:hover{color:var(--green-accent)}
.nav-links a:hover::after{right:0}
.nav-actions{display:flex;gap:10px;align-items:center}
.hamburger{display:none;background:none;border:none;cursor:pointer;padding:8px}
.hamburger svg{stroke:var(--ink)}
.mobile-panel{display:none;background:#fff;border-top:1px solid rgba(0,0,0,.07);padding:12px var(--gutter) 20px}
.mobile-panel.open{display:block}
.mobile-panel a{display:block;padding:12px 4px;font-size:16px;font-weight:500;border-bottom:1px solid rgba(0,0,0,.05)}
.mobile-panel .btn{width:100%;margin-top:12px}

/* ============ Hero ============ */
.hero{
  background:var(--cream);
  padding:64px 0 72px;
  overflow:hidden;
}
.hero .wrap{
  display:grid;grid-template-columns:60% 40%;
  gap:40px;align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.18em;
  color:var(--green-accent);
  margin-bottom:20px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--green-accent)}
.hero h1{
  font-size:52px;font-weight:700;line-height:1.25;
  color:var(--green-brand);
  margin-bottom:20px;
}
.hero .sub{
  font-size:19px;line-height:1.75;color:var(--ink-soft);
  max-width:520px;margin-bottom:32px;
}
.hero .sub strong{color:var(--ink);font-weight:600}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:44px}
.hero-stats{display:flex;gap:40px}
.hero-stats .num{font-size:30px;font-weight:700;color:var(--green-brand);line-height:1.2}
.hero-stats .lbl{font-size:13px;color:var(--ink-soft);margin-top:2px}
.hero-stats .sep{width:1px;background:rgba(0,0,0,.10);align-self:stretch}

/* Hero 右侧工作流插画（纯 CSS/SVG 绘制） */
.stage{position:relative;height:460px}
.stage-card{
  position:absolute;background:#fff;border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  padding:14px;
}
.card-upload{width:168px;top:8px;left:0;transform:rotate(-4deg);z-index:1}
.card-upload .thumb{
  background:var(--ceramic);border-radius:8px;height:150px;
  display:flex;align-items:center;justify-content:center;
}
.card-upload .cap{font-size:12.5px;color:var(--ink-soft);margin-top:10px;display:flex;align-items:center;gap:6px}
.dot-ok{width:7px;height:7px;border-radius:50%;background:var(--green-accent);flex-shrink:0}
.card-gen{
  width:224px;top:196px;left:56px;z-index:3;
  box-shadow:var(--shadow-lift);
}
.card-gen .row{display:flex;align-items:center;gap:8px;font-size:13.5px;font-weight:600;margin-bottom:10px}
.spinner{
  width:14px;height:14px;border-radius:50%;flex-shrink:0;
  border:2px solid var(--green-light);border-top-color:var(--green-accent);
  animation:spin 1s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}
.progress{height:6px;border-radius:3px;background:var(--ceramic);overflow:hidden}
.progress i{
  display:block;height:100%;width:40%;border-radius:3px;
  background:var(--green-accent);
  animation:slide 2.2s ease-in-out infinite;
}
@keyframes slide{0%{margin-left:-40%}60%,100%{margin-left:100%}}
.card-gen .step{font-size:12px;color:var(--ink-soft);margin-top:8px}
.card-video{
  width:168px;top:96px;right:0;transform:rotate(3deg);z-index:2;
  padding:10px;
}
.card-video .screen{
  background:var(--green-house);border-radius:8px;height:230px;
  display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden;
}
.card-video .screen::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(120% 90% at 70% 20%,rgba(43,81,72,.9),transparent 60%);
}
.play{
  width:46px;height:46px;border-radius:50%;background:#fff;
  display:flex;align-items:center;justify-content:center;position:relative;z-index:1;
  box-shadow:0 2px 8px rgba(0,0,0,.25);
}
.play svg{margin-left:2px}
.card-video .cap{font-size:12.5px;color:var(--ink-soft);margin-top:9px;display:flex;justify-content:space-between}
.card-video .cap b{color:var(--ink);font-weight:600}
.chip-save{
  position:absolute;bottom:66px;right:6px;z-index:4;
  background:var(--green-light);color:var(--green-brand);
  font-size:12.5px;font-weight:600;
  border-radius:var(--radius-pill);padding:7px 14px;
  display:flex;align-items:center;gap:6px;
  box-shadow:var(--shadow-card);
  transform:rotate(-2deg);
}
.stage-arrow{position:absolute;top:64px;left:150px;z-index:0;opacity:.55}

/* Hero 底部三步流程 */
.steps{
  margin-top:56px;
  background:#fff;border-radius:var(--radius-card);box-shadow:var(--shadow-card);
  display:grid;grid-template-columns:1fr 1fr 1fr;
}
.steps li{
  display:flex;align-items:center;gap:14px;padding:20px 26px;
  position:relative;
}
.steps li+li::before{
  content:"";position:absolute;left:0;top:22%;height:56%;width:1px;
  background:rgba(0,0,0,.08);
}
.steps .no{
  width:30px;height:30px;border-radius:50%;flex-shrink:0;
  border:1.5px solid var(--green-accent);color:var(--green-accent);
  font-size:14px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.steps b{font-size:15px;font-weight:600;display:block}
.steps span{font-size:13px;color:var(--ink-soft)}

/* ============ 功能区块 ============ */
.section{padding:72px 0}
.section-white{background:#fff}
.section-cream{background:var(--cream)}
.sec-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;
  margin-bottom:36px;
}
.sec-head .eyebrow{margin-bottom:12px}
.sec-head h2{font-size:30px;font-weight:700;color:var(--green-brand);line-height:1.3}
.sec-head p{font-size:15px;color:var(--ink-soft);margin-top:8px;max-width:560px}
.sec-link{
  font-size:14.5px;font-weight:600;color:var(--green-accent);
  display:inline-flex;align-items:center;gap:6px;flex-shrink:0;
  border-bottom:1px solid transparent;transition:border-color .2s ease;
}
.sec-link:hover{border-color:var(--green-accent)}

/* 功能卡片 */
.grid-video{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.grid-image{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.fcard{
  background:#fff;border-radius:var(--radius-card);box-shadow:var(--shadow-card);
  display:flex;flex-direction:column;overflow:hidden;
  transition:transform .25s ease,box-shadow .25s ease;
  position:relative;
}
.fcard:hover{transform:translateY(-4px);box-shadow:var(--shadow-lift)}
.fcard .thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--green-light)}
.fcard .thumb img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .5s ease}
.fcard:hover .thumb img{transform:scale(1.06)}
.fcard .play{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:46px;height:46px;border-radius:50%;
  background:rgba(255,255,255,.94);color:var(--green-brand);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 20px rgba(15,61,46,.28);
  transition:transform .3s ease;
}
.fcard:hover .play{transform:translate(-50%,-50%) scale(1.12)}
.fcard .dur{
  position:absolute;right:10px;bottom:10px;padding:3px 9px;border-radius:var(--radius-pill);
  background:rgba(15,30,24,.55);color:#fff;font-size:11px;font-weight:600;
}
.fcard .fbody{padding:16px 20px 18px;display:flex;flex-direction:column;flex:1}
.fcard h3{font-size:16.5px;font-weight:600;margin-bottom:8px}
.fcard .desc{font-size:13px;line-height:1.65;color:var(--ink-soft);flex:1}
.fcard .meta{display:flex;gap:6px;flex-wrap:wrap;margin:14px 0 14px}
.tag{
  font-size:11.5px;color:var(--ink-soft);
  background:var(--cream);border-radius:var(--radius-pill);
  padding:3px 10px;
}
.tag.hot{background:var(--green-light);color:var(--green-brand);font-weight:600}
.fcard .go{
  font-size:14px;font-weight:600;color:var(--green-accent);
  display:flex;align-items:center;gap:5px;
}
.fcard .go svg{transition:transform .2s ease}
.fcard:hover .go svg{transform:translateX(3px)}
.fcard .stretched{position:absolute;inset:0;border-radius:inherit}

/* 工具区（紧凑排列） */
.tools-board{
  background:var(--cream);border-radius:var(--radius-card);
  padding:8px;
  display:grid;grid-template-columns:repeat(7,1fr);gap:8px;
}
.tool{
  background:#fff;border-radius:8px;box-shadow:var(--shadow-card);
  padding:18px 10px 16px;text-align:center;
  transition:transform .25s ease,box-shadow .25s ease;
}
.tool:hover{transform:translateY(-3px);box-shadow:var(--shadow-lift)}
.tool .icon{
  width:38px;height:38px;margin:0 auto 10px;border-radius:50%;
  background:var(--green-light);color:var(--green-brand);
  display:flex;align-items:center;justify-content:center;
}
.tool b{font-size:13.5px;font-weight:600;display:block}
.tool span{font-size:11.5px;color:var(--ink-faint);margin-top:3px;display:block}
.tools-note{text-align:center;font-size:13px;color:var(--ink-faint);margin-top:18px}

/* ============ 深绿横幅：自带 Key ============ */
.band{
  background:var(--green-house);color:#fff;
  padding:80px 0;
}
.band .eyebrow{color:var(--gold)}
.band .eyebrow::before{background:var(--gold)}
.band h2{font-size:32px;font-weight:700;line-height:1.35;max-width:560px;margin-bottom:16px}
.band .lead{color:var(--white-soft);font-size:16.5px;line-height:1.75;max-width:600px;margin-bottom:44px}
.band-cols{
  display:grid;grid-template-columns:repeat(3,1fr);
  border-top:1px solid rgba(255,255,255,.2);
  margin-bottom:44px;
}
.band-cols li{
  padding:26px 28px 4px 0;
}
.band-cols li+li{border-left:1px solid rgba(255,255,255,.2);padding-left:28px}
.band-cols b{font-size:16px;font-weight:600;display:block;margin-bottom:8px}
.band-cols p{font-size:13.5px;line-height:1.7;color:var(--white-soft)}
.band-cols .kicon{color:var(--gold);margin-bottom:14px}
.band-cta{display:flex;gap:14px;flex-wrap:wrap}

/* ============ 会员横幅（金色仪式区） ============ */
.member{padding:72px 0;background:var(--cream)}
.member-card{
  background:var(--gold-lightest);
  border:1px solid rgba(203,162,88,.45);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  padding:52px 56px;
  display:grid;grid-template-columns:1.2fr 1fr;gap:48px;align-items:center;
}
.member-card .eyebrow{color:#8a6d2f}
.member-card .eyebrow::before{background:var(--gold)}
.member-card h2{font-size:28px;font-weight:700;color:var(--ink);margin-bottom:14px}
.member-card .sub{font-size:15px;line-height:1.75;color:var(--ink-soft);margin-bottom:26px}
.member-perks li{
  display:flex;align-items:center;gap:12px;
  padding:11px 0;font-size:14.5px;font-weight:500;
}
.member-perks li+li{border-top:1px solid rgba(203,162,88,.25)}
.member-perks .ck{
  width:22px;height:22px;border-radius:50%;flex-shrink:0;
  background:var(--gold);color:#fff;
  display:flex;align-items:center;justify-content:center;
}
.member-perks li span{color:var(--ink-faint);font-weight:400;font-size:13px;margin-left:auto}

/* ============ 页脚 ============ */
.footer{background:var(--green-house);color:var(--white-soft);padding:56px 0 0}
.footer .cols{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;
  padding-bottom:44px;
}
.footer .brand{color:#fff;margin-bottom:14px}
.footer .slogan{font-size:13.5px;line-height:1.7;max-width:260px}
.footer h4{color:#fff;font-size:14px;font-weight:600;margin-bottom:16px}
.footer .cols li{margin-bottom:10px}
.footer .cols a{font-size:13.5px;transition:color .2s ease}
.footer .cols a:hover{color:#fff}
.footer .bar{
  border-top:1px solid rgba(255,255,255,.15);
  padding:20px 0;font-size:12.5px;color:var(--white-faint);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
}

/* ============ 滚动渐显 ============ */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .5s ease,transform .5s ease}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .progress i,.spinner{animation:none}
  html{scroll-behavior:auto}
}

/* ============ 响应式 ============ */
@media(max-width:1023px){
  .grid-video{grid-template-columns:repeat(2,1fr)}
  .grid-image{grid-template-columns:repeat(3,1fr)}
  .tools-board{grid-template-columns:repeat(4,1fr)}
  .hero h1{font-size:42px}
  .member-card{grid-template-columns:1fr;padding:40px 32px;gap:28px}
  .footer .cols{grid-template-columns:1fr 1fr}
}
@media(max-width:767px){
  .nav-links,.nav-actions .btn-dark-outline{display:none}
  .hamburger{display:block;margin-left:auto}
  .nav-actions{margin-left:auto}
  .nav-actions:has(.hamburger){margin-left:0}
  .hero{padding:44px 0 56px}
  .hero .wrap{grid-template-columns:1fr}
  .hero h1{font-size:34px}
  .hero .sub{font-size:16.5px}
  .stage{height:440px;max-width:400px;margin:8px auto 0}
  .chip-save{bottom:8px;right:0}
  .steps{grid-template-columns:1fr}
  .steps li+li::before{left:26px;right:26px;top:0;width:auto;height:1px}
  .grid-video,.grid-image{grid-template-columns:1fr}
  .tools-board{grid-template-columns:repeat(2,1fr)}
  .band-cols{grid-template-columns:1fr}
  .band-cols li+li{border-left:none;border-top:1px solid rgba(255,255,255,.2);padding-left:0}
  .band-cols li{padding:22px 0}
  .sec-head{flex-direction:column;align-items:flex-start;gap:10px}
  .hero-stats{gap:24px}
  .footer .cols{grid-template-columns:1fr}
}

/* ============ 内页共享：导航选中态 & 已登录用户区 ============ */
.nav-links a.on{color:var(--green-accent);font-weight:600}
.nav-links a.on::after{right:0}
.user-chip{display:flex;align-items:center;gap:10px}
.user-chip .vip{
  font-size:11.5px;font-weight:700;color:#8a6d2f;
  background:var(--gold-lightest);border:1px solid rgba(203,162,88,.5);
  padding:3px 10px;border-radius:var(--radius-pill);
}
.user-chip .avatar{
  width:34px;height:34px;border-radius:50%;
  background:var(--green-brand);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:600;
}