:root{color-scheme:light dark;--paper:#f3eee3;--paper-deep:#e7ddcc;--ink:#2d2923;--muted:#746c61;--rust:#a55a3a;--rust-dark:#7d3e28;--sage:#7c8770;--line:#cfc3b2;--card:#fbf7ee;--soft:#eee5d7;--green:#336b52;--danger:#9d3d32;--shadow:0 22px 70px rgba(70,50,31,.12);--serif:"Noto Serif TC","Songti TC","STSong","Times New Roman",serif;--display:"Cormorant Garamond","Noto Serif TC","Times New Roman",serif}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:92px}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--serif);line-height:1.72;-webkit-font-smoothing:antialiased;overflow-x:hidden}body::selection{background:rgba(165,90,58,.25)}button,input,select,textarea{font:inherit;color:inherit}button,a{-webkit-tap-highlight-color:transparent}a{color:inherit;text-decoration:none}[hidden]{display:none!important}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.grain{position:fixed;inset:0;z-index:100;pointer-events:none;opacity:.15;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.72' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.22'/%3E%3C/svg%3E");mix-blend-mode:multiply}.ambient{position:fixed;border-radius:999px;filter:blur(90px);opacity:.19;pointer-events:none;z-index:-1}.ambient-one{width:420px;height:420px;background:#d58a63;top:-160px;right:-100px;animation:floatAmbient 13s ease-in-out infinite}.ambient-two{width:360px;height:360px;background:#a9b391;bottom:-140px;left:-120px;animation:floatAmbient 16s ease-in-out infinite reverse}@keyframes floatAmbient{50%{transform:translate3d(-30px,22px,0) scale(1.08)}}.site-header{position:sticky;top:0;z-index:60;border-bottom:1px solid color-mix(in srgb,var(--line) 72%,transparent);background:color-mix(in srgb,var(--paper) 86%,transparent);backdrop-filter:blur(18px) saturate(115%)}.topbar{width:min(calc(100% - 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78px);display:flex;flex-direction:column;justify-content:center}.hero-layout{width:min(calc(100% - 44px),1280px);margin:auto;display:grid;grid-template-columns:1.08fr .92fr;gap:80px;align-items:center}.kicker,.mini-label{margin:0;color:var(--rust);font-size:.67rem;font-weight:800;letter-spacing:.16em;text-transform:uppercase}.kicker{display:flex;align-items:center;gap:10px}.kicker span{width:28px;height:1px;background:currentColor}.hero h1,.feature-section h2,.login-panel h2{margin:20px 0 0;font-family:var(--display);font-weight:600;line-height:.93;letter-spacing:-.035em}.hero h1{font-size:clamp(4.2rem,8.2vw,8.4rem)}.hero h1 em,.feature-section h2 em{color:var(--rust);font-weight:600}.hero-lead{max-width:690px;margin:30px 0 0;color:var(--muted);font-size:1.02rem}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:32px}.button{min-height:50px;padding:0 20px;border:1px solid transparent;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;gap:10px;font-size:.82rem;font-weight:800;letter-spacing:.025em;cursor:pointer;transition:transform .28s ease,box-shadow .28s ease,background .28s ease}.button:hover{transform:translateY(-3px)}.line-button{background:#276f4b;color:#fff;box-shadow:0 10px 30px rgba(39,111,75,.2)}.line-button:hover{background:#205d3e;box-shadow:0 14px 38px rgba(39,111,75,.28)}.line-button.large{min-height:58px;padding:0 27px}.line-dot{width:25px;height:25px;border-radius:50%;display:grid;place-items:center;background:#fff;color:#276f4b;font-family:Arial,sans-serif;font-size:.7rem;font-weight:900}.ghost-button{border-color:var(--line);background:rgba(255,255,255,.25)}.ink-button{background:var(--ink);color:var(--paper)}.ink-button:hover{background:var(--rust-dark);box-shadow:0 14px 36px rgba(125,62,40,.22)}.hero-fine{margin:15px 0 0;color:var(--muted);font-size:.68rem}.hero-scene{position:relative;min-height:510px;perspective:1200px}.scene-card{position:absolute;border:1px solid var(--line);background:color-mix(in srgb,var(--card) 93%,transparent);box-shadow:var(--shadow);backdrop-filter:blur(12px)}.scene-main{width:min(100%,510px);right:0;top:30px;padding:25px;border-radius:6px 28px 8px 24px;transform:rotate(1.5deg);animation:sceneFloat 6s ease-in-out infinite}@keyframes sceneFloat{50%{transform:translateY(-10px) rotate(.6deg)}}.scene-head{display:grid;grid-template-columns:auto 1fr auto;gap:12px;align-items:center;padding-bottom:18px;border-bottom:1px solid var(--line)}.seal{width:42px;height:42px;border:1px solid var(--rust);border-radius:50%;display:grid;place-items:center;color:var(--rust);font-family:var(--display);font-weight:700;font-style:italic;transform:rotate(-9deg)}.scene-head div{display:grid}.scene-head small,.scene-note small,.scene-ticket small{color:var(--muted);font-size:.55rem;letter-spacing:.14em}.scene-head strong{font-size:.9rem}.status-stamp{padding:5px 9px;border:1px solid var(--rust);color:var(--rust);font-size:.62rem;font-weight:800;transform:rotate(3deg)}.scene-thread{padding:23px 0;display:grid;gap:12px}.bubble{max-width:83%;margin:0;padding:12px 14px;border-radius:15px;font-size:.78rem}.bubble.customer{justify-self:end;background:var(--rust);color:#fff;border-bottom-right-radius:3px}.bubble.engineer{background:var(--soft);border-bottom-left-radius:3px}.scene-compose{height:46px;padding:0 14px;border:1px solid var(--line);border-radius:999px;display:flex;align-items:center;justify-content:space-between;color:var(--muted);font-size:.72rem}.scene-compose b{color:var(--rust);font-size:1rem}.scene-note{left:-15px;bottom:55px;padding:19px 22px;border-radius:18px 4px 16px 5px;transform:rotate(-4deg);animation:noteFloat 7s ease-in-out infinite}@keyframes noteFloat{50%{transform:translateY(9px) rotate(-2deg)}}.scene-note{display:grid;gap:3px}.scene-note strong{font-family:var(--display);font-size:1.5rem}.scene-note span{color:var(--muted);font-size:.62rem}.scene-ticket{position:absolute;right:-15px;bottom:4px;padding:12px 18px;border:1px dashed var(--rust);background:var(--paper);display:grid;transform:rotate(5deg);box-shadow:0 12px 35px rgba(70,50,31,.09)}.scene-ticket span{font-family:var(--display);font-weight:700}.scene-ticket small{color:var(--rust)}.hero-orbit{position:absolute;color:var(--muted);font-family:var(--display);font-size:.68rem;letter-spacing:.16em;opacity:.6}.orbit-a{left:4%;top:20%;transform:rotate(-90deg)}.orbit-b{right:3%;top:42%;transform:rotate(90deg)}.marquee{margin-top:auto;padding:16px 0 0;display:flex;overflow:hidden;border-top:1px solid var(--line);color:var(--muted);font-family:var(--display);font-size:.76rem;letter-spacing:.18em;white-space:nowrap}.marquee div{min-width:max-content;padding-right:25px;animation:marquee 24s linear infinite}@keyframes marquee{to{transform:translateX(-100%)}}.feature-section{width:min(calc(100% - 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