/* ============================================================
   江南看台 · 共享站点样式 /assets/site.css
   夜潮黛青底 · 藕荷雾注释 · 荧光青读数 · 珊瑚橙信号
   ============================================================ */

:root{
  --ink-900:#08161E;
  --ink-800:#0E2430;
  --deep:#17505C;
  --lily:#F0E8F0;
  --haze:#C7B6CC;
  --chalk:#F6F8F7;
  --cyan:#35E0CE;
  --coral:#FF6A46;
  --steel:#6C818F;

  --line-dark:rgba(199,182,204,.22);
  --line-soft:rgba(199,182,204,.12);
  --line-ink:rgba(14,36,48,.18);

  --font-head:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-data:"JetBrains Mono","SFMono-Regular","Cascadia Mono",Consolas,"Courier New",monospace;

  --cut:14px;
  --skew:8deg;
  --rail:clamp(1.15rem,5vw,5rem);
  --shell:1180px;
  --header-h:clamp(60px,7vw,78px);
  --ease:cubic-bezier(.22,.7,.24,1);
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink-800);
  color:var(--chalk);
  font-family:var(--font-body);
  font-weight:400;
  font-size:1rem;
  line-height:1.75;
  letter-spacing:normal;
  word-break:break-word;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd,ol,ul{margin:0}
ol,ul{padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
strong{font-weight:600}
[hidden]{display:none !important}

:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}

#main-content{display:block;min-height:45vh}

/* ---------- 基础排版 ---------- */
.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--rail)}
.shell--wide{max-width:1340px}
.shell--narrow{max-width:760px}

.eyebrow{
  display:inline-flex;align-items:center;gap:.55rem;
  font-family:var(--font-data);font-size:.64rem;font-weight:400;
  letter-spacing:.22em;text-transform:uppercase;color:var(--cyan);
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--cyan);flex:0 0 auto}

.section-head{display:grid;gap:.6rem;margin-bottom:clamp(1.4rem,3vw,2.2rem)}
.section-head__title{
  font-family:var(--font-head);font-weight:400;
  font-size:1.75rem;line-height:1.35;letter-spacing:-.015em;color:var(--chalk);
}
.section-head__lede{font-size:.95rem;line-height:1.8;color:var(--haze);max-width:56ch}

.data-num{
  font-family:var(--font-data);
  font-variant-numeric:tabular-nums;
  font-feature-settings:"tnum" 1;
  letter-spacing:.01em;
  color:var(--cyan);
}

.zone-light{background:var(--lily);color:var(--ink-800)}
.zone-light .section-head__title{color:var(--ink-800)}
.zone-light .section-head__lede{color:#3d5763}
.zone-light .eyebrow{color:#17505C}
.zone-light .eyebrow::before{background:#17505C}
.zone-light .data-num{color:#17505C}

.hair-rule{height:1px;border:0;background:linear-gradient(90deg,var(--line-dark),transparent);margin-block:clamp(1.6rem,4vw,2.8rem)}

/* ---------- 按钮 ---------- */
.btn{
  --cut:12px;
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  padding:.72rem 1.15rem;
  font-family:var(--font-data);font-size:.76rem;font-weight:400;
  letter-spacing:.08em;line-height:1.3;
  border:1px solid transparent;
  clip-path:polygon(var(--cut) 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%,0 var(--cut));
  transition:background .3s var(--ease),color .3s var(--ease),border-color .3s var(--ease),transform .3s var(--ease);
}
.btn:hover{transform:translateY(-1px)}
.btn--signal{background:var(--coral);color:var(--ink-900);border-color:var(--coral)}
.btn--signal:hover{background:#ff8560;border-color:#ff8560}
.btn--ghost{background:transparent;color:var(--chalk);border-color:var(--line-dark)}
.btn--ghost:hover{color:var(--cyan);border-color:var(--cyan)}
.btn--line{background:transparent;color:var(--ink-800);border-color:var(--line-ink)}
.btn--line:hover{color:#17505C;border-color:#17505C}

/* ---------- skip link ---------- */
.skip-link{
  position:absolute;left:var(--rail);top:.55rem;z-index:120;
  padding:.6rem 1rem;
  background:var(--cyan);color:var(--ink-900);
  font-family:var(--font-data);font-size:.74rem;letter-spacing:.06em;
  transform:translateY(-220%);
  transition:transform .25s var(--ease);
}
.skip-link:focus{transform:translateY(0)}

/* ============================================================
   HEADER
   ============================================================ */
.ed-header{
  position:sticky;top:0;z-index:60;
  color:var(--chalk);
  background:linear-gradient(180deg,rgba(8,22,30,.97),rgba(14,36,48,.94));
  border-bottom:1px solid var(--line-soft);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.ed-header__rail{
  display:flex;align-items:center;gap:clamp(.7rem,1.8vw,1.8rem);
  width:100%;max-width:1440px;margin-inline:auto;
  padding-inline:var(--rail);
  min-height:var(--header-h);
}

/* 品牌 */
.brand-mark{
  display:inline-flex;align-items:center;gap:.7rem;flex:0 0 auto;
  padding:.3rem .15rem .3rem 0;
}
.brand-mark__glyph{
  display:grid;grid-template-columns:repeat(3,6px);gap:3px;align-items:end;
  height:22px;flex:0 0 auto;
}
.brand-mark__glyph i{display:block;width:6px}
.brand-mark__glyph i:nth-child(1){height:55%;background:var(--haze)}
.brand-mark__glyph i:nth-child(2){height:100%;background:var(--cyan)}
.brand-mark__glyph i:nth-child(3){height:74%;background:var(--coral)}
.brand-mark__text{display:block}
.brand-mark__name{
  display:block;font-family:var(--font-head);font-weight:500;
  font-size:1.06rem;line-height:1.2;letter-spacing:.06em;
}
.brand-mark__sub{
  display:block;font-family:var(--font-data);font-weight:400;
  font-size:.6rem;line-height:1.7;letter-spacing:.16em;color:var(--haze);
}

/* 中部留白 */
.ed-header__gap{
  flex:1 1 auto;display:flex;align-items:center;gap:.7rem;
  min-width:1.5rem;padding-inline:.4rem;
}
.ed-header__hair{
  flex:1 1 auto;height:1px;
  background:linear-gradient(90deg,transparent,var(--line-dark) 28%,var(--line-dark) 72%,transparent);
}
.ed-header__slash{
  flex:0 0 auto;width:22px;height:1px;background:var(--steel);
  transform:rotate(calc(var(--skew) * -1));
}

/* 工具组 */
.ed-header__tools{
  display:flex;align-items:center;gap:clamp(.5rem,1.2vw,1rem);
  flex:0 0 auto;
}

/* 主导航 */
.ed-nav{--cut:14px;display:flex;align-items:center}
.ed-nav__list{display:flex;align-items:center;gap:clamp(.55rem,1.5vw,1.35rem)}
.ed-nav__item{flex:0 0 auto}
.ed-nav__link{
  position:relative;display:inline-flex;flex-direction:column;gap:.12rem;
  padding:.4rem .1rem;color:var(--haze);
  font-size:.82rem;line-height:1.35;
  transition:color .28s var(--ease);
}
.ed-nav__idx{
  font-family:var(--font-data);font-size:.55rem;letter-spacing:.14em;
  color:var(--steel);transition:color .28s var(--ease);
}
.ed-nav__label{display:inline-block;white-space:nowrap}
.ed-nav__link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:var(--cyan);transform:scaleX(0);transform-origin:left center;
  transition:transform .32s var(--ease);
}
.ed-nav__link:hover{color:var(--chalk)}
.ed-nav__link:hover::after{transform:scaleX(1)}
.ed-nav__link[aria-current="page"]{color:var(--chalk)}
.ed-nav__link[aria-current="page"] .ed-nav__idx{color:var(--cyan)}
.ed-nav__link[aria-current="page"]::after{transform:scaleX(1);height:2px}

/* 指引按钮 */
.guide-trigger{
  --cut:9px;
  display:inline-flex;align-items:center;gap:.45rem;
  padding:.5rem .7rem;
  font-family:var(--font-data);font-size:.68rem;letter-spacing:.06em;
  color:var(--haze);border:1px solid var(--line-dark);
  clip-path:polygon(var(--cut) 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%,0 var(--cut));
  transition:color .28s var(--ease),background .28s var(--ease),border-color .28s var(--ease);
}
.guide-trigger__dot{
  width:6px;height:6px;flex:0 0 auto;background:var(--coral);
  box-shadow:0 0 0 3px rgba(255,106,70,.16);
}
.guide-trigger__text{white-space:nowrap}
.guide-trigger:hover{color:var(--chalk);border-color:var(--cyan)}
.guide-trigger[aria-expanded="true"]{background:var(--cyan);color:var(--ink-900);border-color:var(--cyan)}
.guide-trigger[aria-expanded="true"] .guide-trigger__dot{background:var(--ink-900);box-shadow:none}

/* 移动开关 */
.nav-toggle{
  --cut:9px;
  display:none;align-items:center;gap:.5rem;
  padding:.5rem .65rem;
  font-family:var(--font-data);font-size:.7rem;letter-spacing:.1em;
  color:var(--chalk);border:1px solid var(--line-dark);
  clip-path:polygon(var(--cut) 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%,0 var(--cut));
  transition:border-color .28s var(--ease),color .28s var(--ease);
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle__bars{display:grid;gap:4px;width:16px;flex:0 0 auto}
.nav-toggle__bars i{display:block;height:1px;background:currentColor;transition:transform .3s var(--ease),opacity .3s var(--ease)}
[data-nav-toggle][aria-expanded="true"] .nav-toggle__bars i:first-child{transform:translateY(2.5px) rotate(45deg)}
[data-nav-toggle][aria-expanded="true"] .nav-toggle__bars i:last-child{transform:translateY(-2.5px) rotate(-45deg)}
.nav-toggle__text{white-space:nowrap}

/* 三步抽屉 */
.guide-drawer{
  --cut:14px;
  position:absolute;top:calc(100% + 10px);right:var(--rail);z-index:70;
  width:min(390px,calc(100vw - var(--rail) * 2));
  padding:1.15rem 1.2rem 1.25rem;
  background:var(--ink-900);
  border:1px solid var(--line-dark);
  clip-path:polygon(var(--cut) 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%,0 var(--cut));
  box-shadow:0 30px 60px -32px rgba(0,0,0,.92);
}
.guide-drawer[data-open]{border-color:rgba(53,224,206,.4)}
.guide-drawer__eyebrow{
  margin-bottom:.9rem;
  font-family:var(--font-data);font-size:.62rem;letter-spacing:.2em;color:var(--cyan);
}
.guide-drawer__steps{display:grid;gap:.7rem;margin-bottom:1.1rem}
.guide-drawer__step{display:flex;gap:.7rem;align-items:flex-start;font-size:.82rem;line-height:1.7}
.guide-step__no{
  flex:0 0 auto;padding-top:.16rem;
  font-family:var(--font-data);font-size:.66rem;letter-spacing:.06em;color:var(--coral);
}
.guide-step__body{color:var(--chalk)}
.guide-drawer__cta{width:100%}

/* 阅读进度 */
.scroll-rail{
  position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--line-soft);overflow:hidden;
}
.scroll-rail__fill{
  display:block;width:100%;height:100%;
  background:linear-gradient(90deg,var(--deep),var(--cyan) 68%,var(--coral));
  transform:scaleX(0);transform-origin:left center;
  transition:transform .12s linear;
}

/* ============================================================
   FOOTER
   ============================================================ */
.ed-footer{
  position:relative;
  margin-top:clamp(2.5rem,6vw,5rem);
  background:var(--ink-900);
  color:var(--haze);
  border-top:1px solid var(--line-soft);
}
.ed-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--cyan) 22%,var(--deep) 62%,transparent);
  transform:rotate(-0.4deg);transform-origin:left center;opacity:.7;
}
.ed-footer__band{
  display:flex;flex-wrap:wrap;align-items:flex-start;
  gap:clamp(1.2rem,3vw,3rem);
  width:100%;max-width:1440px;margin-inline:auto;
  padding:clamp(1.7rem,4vw,2.6rem) var(--rail);
}
.ed-footer__col{min-width:0}
.ed-footer__col--meta{flex:2 1 300px}
.ed-footer__col--contact{flex:1.5 1 280px}
.ed-footer__col--legal{flex:0 1 170px;display:flex;flex-direction:column;align-items:flex-start;gap:.5rem}
.ed-footer__brand{
  display:block;margin-bottom:.55rem;
  font-family:var(--font-head);font-weight:500;font-size:1.05rem;
  letter-spacing:.16em;color:var(--chalk);
}
.ed-footer__note{font-size:.78rem;line-height:1.75;color:var(--haze);max-width:36ch}
.ed-footer__icp{
  margin-top:.7rem;
  font-family:var(--font-data);font-size:.68rem;letter-spacing:.05em;color:var(--steel);
}
.ed-footer__year{font-family:var(--font-data);color:var(--steel)}
.ed-footer__label{
  margin-bottom:.55rem;
  font-family:var(--font-data);font-size:.62rem;letter-spacing:.2em;
  text-transform:uppercase;color:var(--steel);
}
.contact-list{display:grid;gap:.35rem}
.contact-list__item{display:flex;flex-wrap:wrap;gap:.55rem;align-items:baseline;font-size:.76rem;line-height:1.65}
.contact-list__key{
  flex:0 0 auto;min-width:2.4em;
  font-family:var(--font-data);font-size:.66rem;letter-spacing:.08em;color:var(--steel);
}
.contact-list__val{color:var(--chalk);font-family:var(--font-data);font-size:.73rem;word-break:break-all}
.ed-footer__links{display:flex;flex-direction:column;gap:.45rem}
.ed-footer__link{
  padding-bottom:.15rem;
  font-family:var(--font-data);font-size:.72rem;letter-spacing:.06em;
  color:var(--haze);border-bottom:1px solid transparent;
  transition:color .26s var(--ease),border-color .26s var(--ease);
}
.ed-footer__link:hover{color:var(--cyan);border-bottom-color:var(--cyan)}

/* ============================================================
   通用组件
   ============================================================ */
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:.45rem;
  padding-block:1rem;
  font-family:var(--font-data);font-size:.66rem;letter-spacing:.08em;color:var(--steel);
}
.crumbs a{color:var(--haze);transition:color .25s var(--ease)}
.crumbs a:hover{color:var(--cyan)}
.crumbs__sep{color:var(--steel);opacity:.65}
.crumbs [aria-current="page"]{color:var(--chalk)}

.panel-cut{
  --cut:14px;
  position:relative;
  padding:clamp(1.1rem,2.4vw,1.6rem);
  background:var(--ink-900);
  border:1px solid var(--line-soft);
  clip-path:polygon(var(--cut) 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%,0 var(--cut));
  transition:background .32s var(--ease),border-color .32s var(--ease);
}
.panel-cut:hover{
  border-color:rgba(53,224,206,.38);
  background-image:linear-gradient(135deg,rgba(53,224,206,.10),transparent 62%);
}

.split-editorial{display:grid;grid-template-columns:minmax(0,1fr);gap:clamp(1.2rem,3vw,2.6rem)}
@media (min-width:900px){
  .split-editorial{grid-template-columns:minmax(200px,24%) minmax(0,1fr)}
  .split-editorial--reverse{grid-template-columns:minmax(0,1fr) minmax(200px,24%)}
}

.filter-bar{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem}
.filter-chip{
  --cut:8px;
  padding:.45rem .85rem;
  font-family:var(--font-data);font-size:.7rem;letter-spacing:.06em;
  color:var(--haze);background:transparent;border:1px solid var(--line-dark);
  clip-path:polygon(var(--cut) 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%,0 var(--cut));
  transition:color .26s var(--ease),background .26s var(--ease),border-color .26s var(--ease);
}
.filter-chip:hover{color:var(--chalk);border-color:var(--steel)}
.filter-chip[aria-pressed="true"]{background:var(--cyan);color:var(--ink-900);border-color:var(--cyan)}

.media-frame{
  --cut:14px;
  --ratio:16 / 9;
  position:relative;display:block;overflow:hidden;
  aspect-ratio:var(--ratio);
  background:linear-gradient(150deg,var(--ink-800),var(--deep) 58%,#0b1d26);
  clip-path:polygon(var(--cut) 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%,0 var(--cut));
}
.media-frame[data-ratio="wide"]{--ratio:21 / 9}
.media-frame[data-ratio="square"]{--ratio:1 / 1}
.media-frame[data-ratio="portrait"]{--ratio:4 / 5}
.media-frame__img{
  width:100%;height:100%;object-fit:cover;
  filter:saturate(.62) contrast(1.04) brightness(.9);
  transition:transform .7s var(--ease),filter .5s var(--ease);
}
.media-frame:hover .media-frame__img{transform:scale(1.03);filter:saturate(.82) contrast(1.05) brightness(1)}
.media-frame__caption{
  position:absolute;top:.75rem;left:.85rem;
  padding:.24rem .5rem;
  font-family:var(--font-data);font-size:.6rem;letter-spacing:.16em;
  color:var(--chalk);background:rgba(8,22,30,.6);
  border-left:2px solid var(--cyan);
}
.media-frame__overlay{
  position:absolute;inset:auto 0 0 0;
  display:flex;align-items:flex-end;justify-content:space-between;gap:.8rem;
  padding:.85rem 1rem;
  font-family:var(--font-data);font-size:.72rem;letter-spacing:.05em;color:var(--chalk);
  background:linear-gradient(180deg,transparent,rgba(8,22,30,.86));
}
.media-frame__overlay .data-num{font-size:1.15rem}

.stat-bar{display:grid;gap:.4rem}
.stat-bar__track{
  position:relative;height:6px;overflow:hidden;
  background:rgba(199,182,204,.14);
  clip-path:polygon(3px 0,100% 0,100% 100%,0 100%,0 3px);
}
.stat-bar__fill{
  display:block;height:100%;width:var(--value,50%);
  background:linear-gradient(90deg,var(--deep),var(--cyan));
  transition:width .6s var(--ease);
}

.live-tag{
  display:inline-flex;align-items:center;gap:.35rem;
  padding:.18rem .5rem;
  font-family:var(--font-data);font-size:.6rem;letter-spacing:.12em;
  color:var(--coral);background:rgba(255,106,70,.08);
  border:1px solid rgba(255,106,70,.5);
}
.live-tag::before{content:"";width:5px;height:5px;flex:0 0 auto;background:var(--coral);border-radius:50%}

.tag-list{display:flex;flex-wrap:wrap;gap:.4rem}
.tag{
  padding:.2rem .5rem;
  font-family:var(--font-data);font-size:.64rem;letter-spacing:.08em;
  color:var(--haze);border:1px solid var(--line-soft);
}

[data-reveal]{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
[data-reveal].is-visible{opacity:1;transform:none}
.is-filtered-out{display:none !important}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1080px){
  .nav-toggle{display:inline-flex}
  .guide-trigger__text{display:none}
  .guide-trigger{padding:.5rem}

  .ed-nav{
    position:absolute;top:calc(100% + 1px);left:var(--rail);right:var(--rail);
    display:block;
    padding:1rem 1.1rem calc(1.1rem);
    background:var(--ink-900);
    border:1px solid var(--line-dark);
    clip-path:polygon(var(--cut) 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%,0 var(--cut));
    box-shadow:0 30px 60px -34px rgba(0,0,0,.92);
    opacity:0;visibility:hidden;transform:translateY(-8px);
    transition:opacity .28s var(--ease),transform .28s var(--ease),visibility .28s linear;
  }
  .ed-nav[data-open]{opacity:1;visibility:visible;transform:translateY(0)}
  .ed-nav__list{flex-direction:column;align-items:stretch;gap:0}
  .ed-nav__item + .ed-nav__item{border-top:1px solid var(--line-soft)}
  .ed-nav__link{
    flex-direction:row;align-items:baseline;gap:.7rem;
    padding:.85rem .2rem;font-size:.95rem;color:var(--chalk);
  }
  .ed-nav__link::after{display:none}
  .ed-nav__link[aria-current="page"] .ed-nav__label{color:var(--cyan)}
  .ed-nav__idx{font-size:.6rem}

  .ed-footer__col--contact,
  .ed-footer__col--legal{border-top:1px solid var(--line-soft);padding-top:1.1rem;width:100%}
}

@media (max-width:720px){
  .brand-mark__sub{font-size:.54rem;letter-spacing:.12em}
  .brand-mark__glyph{height:18px;grid-template-columns:repeat(3,5px)}
  .brand-mark__glyph i{width:5px}
  .ed-header__gap{display:none}
  .ed-header__rail{justify-content:space-between}
  .ed-nav__link{padding:.75rem .2rem;font-size:.9rem}
  .guide-drawer{left:var(--rail);right:var(--rail);width:auto}
  .ed-footer__band{gap:1.2rem}
  .ed-footer__col--meta,
  .ed-footer__col--contact,
  .ed-footer__col--legal{flex:1 1 100%}
  .contact-list__item{flex-direction:column;gap:.1rem}
  .contact-list__key{min-width:0}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  [data-reveal]{opacity:1;transform:none}
  .scroll-rail__fill{transition:none}
  .btn:hover{transform:none}
  .media-frame:hover .media-frame__img{transform:none}
}